Diamond Wire Saws,Marble Diamond Wire Saw,Multi Diamond Wire Saw
Diamond Saw Blades Co., Ltd. , http://www.nssawblade.com
2019年9月20日星期五
QYW25-70 submersible pump pneumatic submersible pump manufacturers
QYW25-70 submersible pump pneumatic submersible pump manufacturers pump electric pump submersible pump submersible pump mining pump Jining pump Shandong QYW25-70 type pneumatic drainage sewage submersible pump: QYQ17-70 based on the original design of the pump QYW25- 70-type pneumatic sewage submersible pump, the pump uses a new semi-open impeller, pump efficiency can be increased by 30%. Conditions of use a, the depth of the submerged pump does not exceed 5m; b, the water temperature does not exceed 40 ℃; c, water PH value of 6.5 to 8.5; d, the volume of solid impurities in water does not exceed 0.1% Greater than 0.2mm. Beautiful appearance, small size, light weight, large flow, over-current part of the suction structure, sewage capacity, will not be because of small solid particles or fibrous material inhalation and will not be due to inhalation of abrasive media Premature damage. The overall structure of the pump is simple, easy assembly and disassembly and maintenance easy to move, the use of methane and coal dust in the work surface is absolutely safe and reliable, and the exhaust port with independent intellectual property rights muffler, greatly improved the working conditions of the underground condition. Mining submersible pumps are what models?
Mining submersible pump QYW25-45 sewage submersible pump
Mining Submersible Pump QYW25-45 Today's Order Information Free shipping! Morning latest buyers information free to send! Punch grab Rob here! Mining submersible pump QYW25-45, where to find the full range of mining submersible pumps? Sewage submersible pumps, the performance of the wind pump has been significantly improved in the structure, material, precision made appropriate adjustments to improve the standardization coefficient, the structure is more reasonable and compact, and improved sewage capacity, the exhaust outlet equipped with advanced and innovative Muffler, greatly reducing the noise, thoroughly improving the conditions used under the mine conditions. Pump looks beautiful, small size, light weight, large flow, underflow part of the suction structure, the impeller is semi-open to use HT200 material, by ≤ 14M particles, sewage capacity, not because of small solid particles or fibers Inhalation and clogging of objects, nor by the inhalation of abrasive media premature damage. Product specifications and main technical parameters: Flow: 25 m3 / min Head: 45m Air pressure: 0.4-0.7 MPa Air consumption: 5-6 m3 / min Weight: 31KG
Wire Mesh Fence,Temporary Fence,PVC Coated Wire Mesh Fence
Fence Woven Wire Mesh Co., Ltd. , http://www.nssteelwires.com
Pump to pump down the correct use of people pay attention
Because the owner did not make necessary consumer warnings to consumers, resulting in improper use of consumers hurt. Recently, Fengqiao Consumers Association branch accepted such a complaint, the victim eventually received a refund 1120 yuan. Recently, Zhao Zhao Town, a store spent 320 yuan to buy a pump. Go home the same day, the pump just a few seconds out of water out of trouble, Zhao immediately unplug the power plug. Surprisingly, the pump is still charged. Zhao accidentally exposed to the pump, it was thrown far away, feet swollen. To the nearby hospital for treatment, spent more than 800 yuan medical expenses. Afterwards, Zhao unsuccessful negotiations with the owner of the shop, they complained to the Association of Consumers Association of Fengqiao.
After receiving the complaint, Fengqiao Consumers Association branch staff and the owner to get in touch. The owner said that the correct use of the pump should be immersed in water pumping, so that the pump will not be charged. Consumers were electric shock, is to use the wrong way, does not belong to the quality of the pump, so the owner does not think they need to take responsibility. Consumers Association staff explained to the owner, may endanger personal and property safety of goods and services, consumers should make a true statement and a clear warning to prevent the occurrence of harm. As an operator , it is obligatory to inform consumers of correct pump usage and warning of improper use. Since the owner did not do this obligation, it should assume the corresponding responsibility. After mediation, the two sides finally reached an agreement: Zhao returned the pump, the owner returned 320 yuan pump money, and compensation Zhao 800 yuan medical expenses
After receiving the complaint, Fengqiao Consumers Association branch staff and the owner to get in touch. The owner said that the correct use of the pump should be immersed in water pumping, so that the pump will not be charged. Consumers were electric shock, is to use the wrong way, does not belong to the quality of the pump, so the owner does not think they need to take responsibility. Consumers Association staff explained to the owner, may endanger personal and property safety of goods and services, consumers should make a true statement and a clear warning to prevent the occurrence of harm. As an operator , it is obligatory to inform consumers of correct pump usage and warning of improper use. Since the owner did not do this obligation, it should assume the corresponding responsibility. After mediation, the two sides finally reached an agreement: Zhao returned the pump, the owner returned 320 yuan pump money, and compensation Zhao 800 yuan medical expenses
Air Seperator,Air Water Separator,TPSA Vessel Air Seperator
Heat Exchanger,Pressure Vessel,Pressure Tank Co., Ltd. , http://www.nsheatexchanger.com
High temperature gear pump maintenance and management
High-temperature gear pump polyester melt delivery, pressurization and melt measurement is essential equipment. Compared with other types of melt pumps, the high temperature gear pump has the advantages of compact structure, reliable operation, low energy consumption, high volumetric efficiency, small shear effect on the melt, stable flow at high viscosity and high pressure, and no outlet pressure fluctuation. The pump has its unique advantages and the key role in the process, making it play an irreplaceable role in polyester production.
However, improper use of the pump, poor management, not only failed to demonstrate its effectiveness, or even cause sudden damage to the pump.
However, improper use of the pump, poor management, not only failed to demonstrate its effectiveness, or even cause sudden damage to the pump.
First, the structure and working principle
A complete gear pump includes a motor, reducer, coupling and pump head several parts, the pump head part of the pump housing, front and rear side cover, gear shaft, sliding bearings and shaft seal composition. High-temperature gear pump is a positive displacement pump, work rely on the main, driven gear changes caused by the work volume changes to transport the melt. Working volume by the pump body, gear tooth groove and the function of the side plate with the composition.
When the gear rotates in the direction as shown in FIG. 1, the melt enters the tooth grooves of the two gears of the suction chamber. As the gear rotates, the melt is brought into the discharge chamber from both sides, and the gears mesh again to make the The melt is forced out of the discharge chamber and pressure fed to the outlet pipe . As soon as the pump shaft is turned, the gear presses the melt down to the outlet side so that the pump outlet can reach very high pressure with little or no effect on flow and discharge pressure.
Second, operation and management
1, routine maintenance
(L) Pump disassembly and cleaning, heating, cooling, starting and stopping should be strictly in accordance with the provisions of the operation, in order to avoid undue losses.
(2) Care should be taken to maintain the stability of the population pressure of the booster pump so that it has a stable volumetric efficiency in favor of the pump itself and the stability of the downstream spinning quality.
(3) The population is negative pressure of the packing shaft seal pump, packing should be kept at a pressure higher than the atmospheric pressure. When the back pressure is reduced, the pressure of the stuffing box should be adjusted in time, otherwise the pump will be sucked into the air and the belt will be broken. This will affect the pelletizing and lead to the discharge of the pelletizer.
(4) to check the temperature of the heat medium jacket, the main body and the front and back cover of the heat medium temperature to be consistent.
(5) Every time the output increases, it is necessary to record the output, speed, output, inlet pressure and current value at the time, and compare the data before and after, and carefully analyze them so as to find the abnormalities as soon as possible and deal with them in time.
2, common faults and countermeasures are as follows:
(1) Symptom: Pump can not discharge
Failure reasons: a, the opposite direction of rotation; b, suction or discharge valve is closed; c, no inlet or pressure is too low; d, viscosity is too high, the pump can not bite material
Countermeasures: a, confirm the direction of rotation; b, confirm whether the valve is closed; c, check the valve and pressure gauge; d, check the liquid viscosity to low-speed operation by the speed ratio of the flow rate is there,
(2) Symptom: Insufficient pump flow
Failure reasons: a, suction or discharge valve is closed; b, the inlet pressure is low; c, the outlet pipe plugging; d, packing box leakage; e, low speed
Countermeasures: a, confirm whether the valve is closed; b, check the valve is open; c, confirm the discharge volume is normal; d, tighten; a large number of leaks affect production, should stop running, disassembly inspection; ;
(3) Symptom: abnormal sound
Failure reasons: a, coupling eccentric or poor lubrication b, motor failure; c, reducer abnormalities; d, shaft seal at the installation of bad; e, shaft deformation or wear
Countermeasures: a, find or fill the grease; b, check the motor; c, check the bearings and gears; d, check the shaft seal; e, parking disintegration check (4)
Failure reasons: a, the outlet pressure is too high; b, melt viscosity is too large; c, shaft seal assembly bad; d, shaft or bearing wear; e, motor failure
Countermeasures: a, check the downstream equipment and pipelines; b, test viscosity; c, check the shaft seal, appropriate adjustments; d, check after parking, hand crank car is too heavy;
(5) Symptom: Pump suddenly stopped
Failure reasons: a, power failure; b, motor overload protection; c, coupling damage; d, the outlet pressure is too high, interlocking reaction; e, abnormal bite into the pump; f, shaft and bearing stuck stuck
Countermeasures: a, check the power; b, check the motor; c, open the safety cover, disk inspection; d, check the instrument interlock system; e, after parking, reversing confirmation; f,
Description: The above symptoms and countermeasures are one to one correspondence
Third, improve the operational life of the measures
1, due to the pump body running at high temperature, it should be installed on the pipe when the cold installation hinged seat, to prevent the displacement pipe after warming.
2, the coupling must be heat pump after heating to find the correct, in order to avoid running additional torque.
3, the pump outlet pressure measuring point to be set to stop interlocking alarm, otherwise, once the discharge pipe blocked, easy to cause damage to the pump.
4, the pump starts, no pressure in the export formation, you can not blindly speed, to prevent premature failure of the shaft or bearing.
5, cleaning pipetting, do not pump delivery of cleaning fluid, the inner part should be removed, pipetting after the end of installation, so as to avoid foreign matter in the pump.
6, the temperature of the jacket heat medium jacket can be slightly lower than the jacket before and after the heat medium temperature. Because the melt viscosity and shear rate as a decreasing function, the gear extrusion, bearing shear will make the melt temperature rise after the pump 3 ~ 5 ℃, reduce the heat medium temperature to prevent the melt degradation. Data show that by reducing the bearing zone temperature can greatly increase bearing capacity, do not need to replace the large-capacity pump, just by increasing the speed can be used gear pump output capacity increased by 50%.
7, speed to be slow, do not make the sharp rise in pressure before and after, in order to avoid damage to the bearings or melt blocked the lubrication channel.
8, after the pump outlet melt filter to be replaced on a regular basis, do not long-term high pressure and pressure limit to run.
9, Regular replacement of bearings can save maintenance costs. When it is found that the amount of wear on the inner surface of the shaft or bearing is close to the thickness of the hardened layer, the shaft can be polished and reused, replacing only the bearing. This prolongs the life of the shaft by 8 to 10 years.
10, in case of power outage or heat medium cycle interrupt more than 3Omin, the pump should be disassembled after cleaning and reassembly, so as to avoid melt curing, cracking and other causes poor bearing lubrication and pump damage.
Wood Wool Machine,Wood Shaves Machine,Wood Wool Mill
Wood Chipper,Portable Band Sawmill,Circular Sawmill,Co., Ltd. , http://www.nswoodmachine.com
New listing | Associate jealousy】 【Jane luxury aesthetic, interpretation of elegant charm
Jane • luxury
Let life a little extravagant
Will be simple without loss of quality
Luxury without losing the concept of integration into the design
Present a dialogue of life and soul
Awaken inner true self
Style: DW212030
Size: C (75-85) / D (75-85)
Style: DW112030
Size: A (70-80) / B (70-85)
Jane luxury aesthetics, interpretation of elegant charm
3D three-dimensional cut, half-piece sewn design process smooth, neat, simple yet elegant
Romantic rose lace embroidery and flower heart embellishment simple cup noodles, cleverly handled the details, highlight the extravagance and beauty, light luxury and elegant art into life
The overall design unconventional, simple and full of content, highlight the fashion attitude
Elegant and sexy, high tips Bigger
Shape the perfect body in detail, Big Bigger even more
Remove the snare to bring health and comfort into life
No rims, no formaldehyde, zero binding, zero pressure
The use of natural chitin functional fabrics, superb antibacterial rate and efficient water absorption, 24-hour all-round care, make the breast more healthy
No rims design, a comprehensive liberation of the chest, no pressure comfort, zero experience new experience
Gently skin-friendly, experience the charm of comfort!
Pure natural printing and dyeing, zero formaldehyde, no added, no pressure without beam
Bottom waves using chitin natural fabrics, 24-hour long-term antibacterial antibacterial
Ultra-fine double brushed silk fabric, smooth and supple, skin softer
Jane • luxury
Simple and light is the expression of life
More than simple fashion, it is life
Let life a little extravagant, beautiful with poetic
Jealous jean [Jane] luxury series nationwide listing
Welcome to the store experience
LED Candles,LED Wax Candle,LED Tea Light
enghua Jade Motor Co., Ltd. , http://www.nscandle.com
Let your girlfriend teach your girlfriends to install the correct way to open
For girls, in addition to their loved ones, girlfriends and their closest relatives, and this close is often manifested in each other without any other talk, mutual sharing of feelings and secrets, but also in the show like to use the same style of things , Such as cups, skirts, bags and so on, it seems more to prove the deep girlfriend between the two. When it comes to the same section between girlfriends, girlfriends, of course, is indispensable, and now let the girlfriend to teach your girlfriend installed the correct way to open.
Good girlfriends honey is not only good, but also with the United States and the United States, then wearing the same shape and shape the bra underwear, will not let both become sexy and charming it? As with the adjustment of the same shape shaping underwear, you can adjust the chest spacing, so that the chest gather, it is more full, of course, but can also be perfect for the original very plump chest, it is well supported and pulling, to avoid the chest Due to heavier underwear and can not load and droop. Also, exquisite floral embroidery, presumably also will make you like this underwear, right?
Good girlfriends who girlfriends, of course, can not only wear underwear, home service, but also to a! These two sets of home clothes is very suitable for girlfriends oh, printed T shirt shirt English letters, loose and simple, black and white colors classic and generous, pants with fresh, vibrant colors, two sets of home service with both casual and Personality, good girlfriends who can not miss it.
Good girlfriends can not only talk about it, although they have their own personality, hobbies, of course, will have the same interest, but also to make their healthier, more beautiful and work together, every day or free time running, not only Good for your health, but also to create a more slim body, so girlfriends wear sports underwear must be your must. Boudoir this year's new sports underwear, the use of comfortable, flexible fabrics, into the popular fluorescent green, bold and personalized design, we must let you become a sports person, fashion trend Oh, enough personality, right?
From underwear to home clothes to sports underwear, each kind of clothes has a set of the same paragraph, this girlfriend installed the way I believe it is also in line with your Italian right? Boudoir underwear brand , so that you have the right way to open your girlfriends with the installation, so that your girlfriends more intimate Oh.
Kid Pantyhose,Kid Knitted Pantyhose,Girl Lovely Knitted Tights
enghua Jade Motor Co., Ltd. , http://www.socks-manufacturers.com
Recent chemical pump market emerged new products
It is not difficult to see that China's current chemical pump market and the international market there is a certain gap, but the recent pump emerged a lot of new varieties:
Hebei Botou Changjiang Valve Co., Ltd. after repeated experiments to improve the design of products, and finally developed a successful thermal insulation pump industry's high-temperature products, the company recently developed BW series insulation gear pump can meet the 400-degree delivery Occasion, to fill the gear insulation pump industry a high temperature products blank.
Anhui Lion Pump Co., Ltd. designed and developed 800S-24G in the open pump successfully passed the national large-scale power plant Shenzhen Nanshan Power Co., Ltd. performance test, meet the national standard. The pump is currently in the pump industry in Anhui Province to create the largest diameter in the open pump.
The fourth generation of submersible pump-DA, DAS two series of new cyclone submersible sewage pump, Jiangsu Asia-Pacific Pump Co., Ltd. successfully developed. The pump combines the motor with the pump body. It is small in size, compact in structure, quick in installation, flexible in operation, convenient in maintenance and repair, and can simplify the civil engineering of the pump station and save 30% -40% of the total cost of pumping station construction. The company designed its own unique swirling impeller structure, the pump body to form a broad space "eddy", easy to enter the pump body of large particles of debris smoothly discharged, significantly reducing the possibility of winding congestion, so that work efficiency More than 30%. On this basis, they also adopt the world's most advanced double-end mechanical seal new technology, so that no leakage of sewage pump. The pump under the water by the control panel and the float switch automatically controlled without the need to configure the control system, you can achieve automatic water level control; not only can be run alone, but also switch parallel operation; set up an internal automatic protection device, overload, Lack of phase or short circuit, flooding, over-temperature conditions, it will automatically stop working to ensure safe operation.
In the future, the prices of domestic chemical pump enterprises have advantages, especially in the price and timeliness of spare parts, and the price-to-price ratio has become the main basis for users to choose to import or domestic-made equipment. In general, the price of domestic pump equipment is only 50% of the imported equipment of the same kind, while the price difference of spare parts is larger.
Hebei Botou Changjiang Valve Co., Ltd. after repeated experiments to improve the design of products, and finally developed a successful thermal insulation pump industry's high-temperature products, the company recently developed BW series insulation gear pump can meet the 400-degree delivery Occasion, to fill the gear insulation pump industry a high temperature products blank.
Anhui Lion Pump Co., Ltd. designed and developed 800S-24G in the open pump successfully passed the national large-scale power plant Shenzhen Nanshan Power Co., Ltd. performance test, meet the national standard. The pump is currently in the pump industry in Anhui Province to create the largest diameter in the open pump.
The fourth generation of submersible pump-DA, DAS two series of new cyclone submersible sewage pump, Jiangsu Asia-Pacific Pump Co., Ltd. successfully developed. The pump combines the motor with the pump body. It is small in size, compact in structure, quick in installation, flexible in operation, convenient in maintenance and repair, and can simplify the civil engineering of the pump station and save 30% -40% of the total cost of pumping station construction. The company designed its own unique swirling impeller structure, the pump body to form a broad space "eddy", easy to enter the pump body of large particles of debris smoothly discharged, significantly reducing the possibility of winding congestion, so that work efficiency More than 30%. On this basis, they also adopt the world's most advanced double-end mechanical seal new technology, so that no leakage of sewage pump. The pump under the water by the control panel and the float switch automatically controlled without the need to configure the control system, you can achieve automatic water level control; not only can be run alone, but also switch parallel operation; set up an internal automatic protection device, overload, Lack of phase or short circuit, flooding, over-temperature conditions, it will automatically stop working to ensure safe operation.
In the future, the prices of domestic chemical pump enterprises have advantages, especially in the price and timeliness of spare parts, and the price-to-price ratio has become the main basis for users to choose to import or domestic-made equipment. In general, the price of domestic pump equipment is only 50% of the imported equipment of the same kind, while the price difference of spare parts is larger.
Durable River Raft Boat,Kayak Fishing Boat,Kayak Attractive Rowing Boat
enghua Jade Motor Co., Ltd. , http://www.nsoutboardmotor.com
Gui Lin underwear brand headquarters welcomed the guests around the world
In 2016, China's underwear market performance is very bright boudoir underwear brand into 2017 continued its hot performance. Since the end of the Spring Festival holiday to resume normal work this period, the headquarters of Shenzhen boudoir underwear has been in a very busy state: the volume of customer visits continued to rise, basically maintaining a daily visit of about 10 customers, while a large number of customers Visiting naturally makes the work more busy, but it is a blessing of happiness.
Gui Mi training teacher visiting customers to explain product knowledge
Boudoir as a well-known domestic brand underwear to join the franchise, the current total number of franchise stores in the country has exceeded 1,800, along with the number of franchise stores, boudoir in all regions of the country's influence and appeal also get To further expand, which in turn has attracted more want to open a franchisee to join Linyi underwear brand boudoir.
As a responsible underwear brand, in a responsible attitude to the franchisee customers, each potential client formally sign up with the boudoir before, the boudoir side will encourage and invite her (he) who came to the boudoir headquarters in Shenzhen Field visits and understanding, through personal visits to achieve more in-depth understanding of each other, and then establish a more trusted cooperation between the two sides.
Throughout the Spring Festival holiday in February, Boudoir continuously welcome customers from all corners of the country (all over the country) to visit and inspect the average daily to maintain about ten visiting customers, while a large number of visiting customers witnessed the continued growth of boudoir Brand charm. For visiting customers, the staff members will be exquisite intentions to serve them carefully, with them to understand the underwear products and co-operation policies, underwear knowledge training, but also to accompany customers to visit the underwear Liaoyang production plant inspection production line in Dongguan, Let each visit a more clear and thorough understanding of boudoir.
High customer visits and more direct understanding of each other directly boost the boudoir and many visiting customers to establish a more trusting relationship, Ultimate Boudoir in February signed a very high contract rate with a number of franchisees.
Gui Mi training teacher visiting customers to explain product knowledge
In 2016, the achievement of more than 700 franchise stores opened has shown the great attraction of the boudoir underwear brand to the franchisee who wants to open a lingerie store. Since 2017, it has started a new sail. For the boudoir, 2017 will be a new journey, and from the performance of February, it has already made a good start for this new journey.
Colorful Flag Badge,Dubai Badge,Souvenir Badge
enghua Jade Motor Co., Ltd. , http://www.nsnamebadge.com
Spring and summer men's underwear style men's underwear on what patterns look good
In the flow of Chinese charm to find
Get rid of myths in the trend of leading the trend
In the popular liberation of oppression
The history of the axis of push ink shop, a giant brush stained the old traces of the mission and responsibility, with a regenerative way to absorb nutrients, filled with the entire Chinese land. Zunde learn from a long history, the fundamental Chinese Confucian ethics, Guomai affection led us to find China's popular self.
The English gentleman's speech can not be separated from the majesty of the epic, the French aristocracy is still focused on practical matters, while China under the strong history of the voice of the gentleman etiquette depict the aging of thousands of years, cultural intercourse between rhythm , Also showed a prosperous towering.
The hat was first used as a Western-style felt hat originated in the United States in the 1950s. Since the late Qing Dynasty, the hat had been introduced into our country. In the Ming dynasty, because it often came first in ceremonial places, people naturally Call it a "top hat"!
British gentleman's dress has always been the fashion circle always talked about, and there are many essential items in the gentleman's dress, which is more in the top hat accessories play an decisive role.
When the first man in the 18th century named Hetherington wore it walking through the streets of London, everyone was drawn to it. The Times commented: "It changed the face of men 's wear , and sooner or later, everyone accepted the accessory." A hat has been popular for a century because of its mastery of "decorative and functional" Men's design eternal formula.
Ink flowing, Danqing ripples, Ding is still the designer inspiration, eye Chinese and Western eyes, bowler = courtesy, gentleman = elegant, elegant and quality, in the final analysis, to achieve China's popular self, Ding Shang for you to create unique, belongs to the "ceremony" style .
One source
Low-profile product design in the retro design has a unique charm, it has years of precipitation, but also fashion ideas, calm in the smart ideas, in the glory of blooming glory days, the pursuit of creative attitude to life is a connotation of exposure , But also a taste of appreciation.
II system
Select the fabric on the selection of ice silk nylon, comfortable spring and summer, soft and personal, with no trace of the edge of a piece of technology, without restraint, better fit the body needs, support for the summer heat for you Cool, exposure to a sense of Qintao, inflammation and cool collide with each other, unable to stop, tick off sticky.
Triple feelings
Products printed on the top hat pattern, the hat is etiquette, a symbol of status, with a steady stream of men's fashion innovation, the development of the hat to become an indispensable part of the men's clothing, the spirit of the so-called gentleman's ceremony in China is Tim Tim of the times Trace and Chinese culture fit, complement each other.
Has been imitated has never been surpassed, China's grand ceremony will be displayed with a respectful perspective, increasingly carved, the spirit of the times, with the deduction of the trend between the buttons. Looking for China's popular self, this spring and summer, landfill enjoy a cool, never stop, only Ding is still.
Synthetic Leather,Furniture Leather,Pvc Leather
enghua Jade Motor Co., Ltd. , http://www.nspuleather.com
2019年9月19日星期四
AnalogicTech Introduces Three Output Charge Pump Regulators
Advanced Analogic (AnalogicTech) recently introduced a three-output charge pump regulator - the AAT2820 for battery-powered portable products. To meet the market demand for TFT LCDs and CCD image sensors , this power management device provides three adjustable output voltages for opening the gate drive bias (Vpos), closing the gate voltage bias (Vneg) and logic voltage.
Both the Von and Voff output voltages use an external diode and a capacitor multiplier to regulate the output. Because the AAT2820 does not use high inductance, it is possible to design ultra-thin products with a height of only 0.8mm.
Both the Von and Voff output voltages use an external diode and a capacitor multiplier to regulate the output. Because the AAT2820 does not use high inductance, it is possible to design ultra-thin products with a height of only 0.8mm.
The AAT2820's switching frequency is 1MHz, allowing designers to use ultra-small external capacitors. It incorporates a soft-start circuit that prevents the device from being damaged by oversized inrush current during startup. Its low-power shutdown feature disconnects the load from Vin, reducing quiescent current to less than 0.1μA. Its thermal protection circuit turns off all charge pumps when the die temperature exceeds a preset value.
Airless Spray Gun,Airless Paint Sprayer,Airless Sprayer
Multi-Arc Ion Vacuum Coating Machine Co., Ltd. , http://www.nscoatingline.com
Who says no rims underwear fashion? Poem Man Fen romantic purple underwear
No rims underwear in our eyes has always been a healthy area, simple but not spent, no rims and fashion seems to take up the edge, but now the trend of development so fast, our thoughts can not be imprisoned in the past Who said no rims underwear fashion? Shirley Mann romantic purple underwear show no rims underwear beauty.
Needless to say the importance of underwear for girls should also understand that the care of girls delicate parts, but also love the source of confidence of girls. You see a such a purple poetry Manfen no steel underwear set, romantic purple elegance because of a little embellishment of printing and different, spring is coming, put on such a scene underwear very van Oh.
The same is purple underwear, but you see poems Manfen such a classic striped elements into the purple underwear is even more unusual? Simple atmosphere of the dress, simple with their own personality, do not need too complicated design, no rims underwear has its own unique charm and fashion sense.
Power Tools,Coil Pallet Nailer,Nail Gun
Air Tool Kits,Impact Wrench Co., Ltd. , http://www.nsstaples.com
Warm congratulations Cai Qi Gannan Road shop trial opening today 3.2 days grand opening
There are a lot of choice in life, choice and do not choose are in one of their own thoughts, multiple choice questions will have at least two options, entrepreneurship and work is a multiple choice, you want a mediocre life, then a lifetime working career , There is no ups and downs of things, a steady life, entrepreneurship will experience the ups and downs, a strong attitude to meet the following things, but I believe now people like to challenge a, because like the risk, the greater the risk of greater return This is investment.
See others rich only envy, your own? What do you think? Why can not others, can not you? The reason is the lack of an opportunity, Cai Qi poetry underwear Gannan shop display finished today began trial operation, March 2 grand opening, opening multiple surprises, more ho ceremony waiting for you! Store Address: Ganzhou Road, Chengguan District, Lanzhou 407 ~ 2 Cai Qi poetry stores (Gaolan Road and Gannan Road 100 meters south east cross)
Choi Chi poems underwear to give you this opportunity to seize the initiative to dominate the market, subvert the traditional underwear, choose their own business girls certainly feel that there are so many women spend no decisive store, men's investment in funds too much, want to go or underwear More economical, underwear can be regardless of the season, small and fine underwear version of the model, each woman will not be missing personal items. Underwear market is still very large Oh, spotted the opportunity, Choi Chi poetry underwear invite you to venture on the road together.
Silk Apparel,Ladies Fashion,Silk Nightwear
Cotton Fabric,Microfiber Co., Ltd. , http://www.nstextilefabrics.com
Soft starter in the control of fire pumps, spray pump applications
Abstract: The microcomputer-controlled motor soft starter to solve the technical problems related to the start-up of the power frequency (star angle and autocoupler) involves the fire water supply technology.
Key words: soft starter, electric shock, mechanical impact, PLC programmable, mechatronics , power factor
With the rapid development of our country's modern fire-fighting cause, the soft-start technology of microcomputer is very important in the application of fire-fighting water supply system. It can completely solve many problems of start-up of fire pump frequency (star angle or autocoupler).
First, the fire pump water supply system control and start-up problems.
1, in the fire water system, fire pump, spray pump can guarantee normal operation is crucial. In the past set fire pump, spray pump in the electronic control system, the use of power frequency (star angle or autoclaved start-up mode) there is a more serious technical problems. This control method, poor reliability, instability, each start and stop the process will cause the impact of electricity and mechanical shocks. As a result, a series of technical problems occur. For example, a large pump motor with a high load starting current may easily cause a crash of the control system, or a switch-off or power-off. Water pipe network caused by water hammer at the same time, the valve , check valve, and pump coupling and so easy to cause damage, seriously affecting the service life of its equipment. Buried in the fire engineering immeasurable hidden dangers, that is unsafe, but not reliable.
In order to solve this problem, we have to arrange special duty on duty to take care of the valve. Operators periodically open the valve, energize and operate the pump to prevent the pump from rusting for a long time. If there is a fire , you also need to set up a professional work procedures according to the pre-defined operation: First of all, to close the valve, and then send electricity to start the motor until the operation is normal and then slowly open the valve (when the valve is running due to the pump, work The pressure is too high, open the valve hard, it is easy to damage), from the fire information, until the equipment is operating normally, at least 10 minutes or so, even more than half an hour, if due to human error or equipment Start with difficulties, resulting in delays, loss of the most favorable opportunity to extinguish fire, caused by a small fire and a fire, the consequences are unimaginable.
2, the application of star angle or step-down self-starting mode in the fire design specifications are allowed to adopt, is in line with design specifications. However, in light of China's national conditions, in practical applications, the drawbacks of technical problems and the unclear management responsibilities have caused firefighting facilities to exist in name only. Can not ensure the safety of fire equipment to work properly. Especially in the electricity-consuming enterprises and institutions more easily exposed such problems.
Often, some fire-fighting facilities can pass the inspection and acceptance when the new construction inspection and acceptance is completed. However, when it is put into normal operation, the fire pump and the spray pump can not start normally. This is because the transformer is already working at full capacity according to the design. If at this moment a large motor starts suddenly and the current is too high, it will easily cause a crash Or power outages and other issues. If it goes on, it will lose the ability to manually start and automatically start fire extinguishing, which will inevitably lead to serious consequences.
In summary, the power frequency (star angle and auto-buck) start-up mode there are several main problems:
(1) large electric impact force; (2) large mechanical impact force; (3) large pump motor requires manual start-up, so it is difficult to realize automatic inspection; (4) Automatic, manual start, so start-up time is too long, delay the fire extinguishing time.
Second, with computer soft starter fire pump control the characteristics and performance
Using DWQ series motor soft starter, the larger fire pump does not need to close the valve start, you can start directly in the fire fighting system, completely solve the pump motor load, starting current is too high and cause crashes or power failure and other issues . This technology is mainly controlled by the computer voltage conduction angle, the starting current, voltage digital control under the computer, with a ramp voltage, current limit. Ramp voltage and current can be set a variety of start-up mode, the motor input voltage and current within the design rated range, reduce and reduce the impact of current, step by step (gradually increase or decrease the work), to achieve a smooth soft-start and soft stop effect . This technology can be achieved electromechanical integration, automation , unmanned operation, safe and reliable. The product on August 15, 1998 through the national fixed fire extinguishing systems and fire-resistant components Quality Supervision and Inspection Center for type testing, determine the qualified products. And on May 5, 1999 by the Liaoning Provincial Fire Department formally approved the production and sale . DXGS microcomputer automatic fire control water supply equipment, the main choice DWQ series motor soft starter, PLC programmable logic controller for the main control unit. The formation of control of non-contact, automatically set the cycle inspection; automatic control of electric valve to ensure the return of open and close flexible; automatic recording of operating hours and operating conditions; in case of fire alarm signal with sound and light alarm; case of equipment failure with sound and light Alarm; with long-distance control, manual, automatic timing switch, and additional functions such as running.
DWQ series motor soft starter with phase sequence, phase loss, over current, over voltage, under voltage, overheat protection. When the protection function, automatically cut off the motor power to protect the motor is not easy to burn out at the same time audible and visual alarm. DWQ series motor soft starter, the main circuit power non-contact, no spark, no noise, vibration-free, long life, high reliability, maintenance work for a very small amount.
DWQ series motor soft starter to change the original start-up control, automatic safety and reliability control to solve the key problems. No longer having to worry about starting a larger motor with a load. At the same time, it avoids the impact caused by the change of the current, protects the mechanical system itself from damage and prolongs the service life of the mechanical system, the electrical control system and the motor.
DWQ series motor soft starter, through the computer control, improve the motor power factor, to achieve energy efficient operation.
GS microcomputer automatic control fire water supply equipment system schematic
DWQ series motor soft starter voltage and current control table
High Quality Disc Filter,Plastic Filter,Hot Sale Filter
Titanium And Titanium Alloy Co., Ltd. , http://www.nstitaniumalloy.com
Sexy bra you romantic season can be your charm
Say "to see if a woman has no charm, then look at her underwear ." The dress outside can be like a fashion magazine, street tide of women to wear, but the underwear is not the same, inappropriate underwear only you know, Your sexy let the romantic season bring you!
Light pink at the end, your tenderness to give you lace add a layer of hazy feeling, exudes a princess-like noble and beautiful, and then a little melancholy. Lace in the heart of the overlap design is ideal for this spring and summer, even in the face of thin spring and summer will have a small sense of security in your heart.
Red underwear is Xiaobian favorite, do not know who you like this color? Big red can bring you lucky but also feminine Oh! Bright red can also bring your skin to bring more white and pink.
To look at yourself is actually a bra will affect your confidence Oh, and bra support will also affect the integrity of the curve of the perfect body. Bra and your little mind, pink Peach may also bring you to bring out the peach Oh!
Romantic season for each season you can write a love song, who knows the food?
Snapback Caps,Printing Snapback Caps,Custom Snapback Caps
Fenghua Jade Motor Co., Ltd. , http://www.nscaphat.com
Large-scale high-voltage submersible submersible sewage pump came out in Changsha
In order to meet the needs of urban flood control and sewage (stains), saving pumping station project cost, Changsha Electrical Machinery Factory Co., Ltd. and Jiangsu University, Wuxi Pump Works jointly developed the first batch of 10 600QW3000-40-500kW 10kV large high-voltage dry run Submersible sewage pump, a few days ago in China's largest installed capacity of Anshan Iron and Steel large sewage pumping station put into use. Not long ago the pump station in the typhoon storm attack, played the power of rapid sewage to ensure normal and orderly production and life of Ansteel.
The new product high lift, up to 40 meters. Its core motor for the first time in our country with high voltage, built-dry-pressure structure, reliable performance and high efficiency. The product motor and pump form one, without the need for on-site labor-intensive, but also can greatly simplify the civil engineering and construction of the pumping station structure, reducing the footprint and saving pumping station project cost up to 30%. Its successful development not only filled the domestic blank, but also marked the development of China's large-scale submersible pump and reached a new level.
The new product high lift, up to 40 meters. Its core motor for the first time in our country with high voltage, built-dry-pressure structure, reliable performance and high efficiency. The product motor and pump form one, without the need for on-site labor-intensive, but also can greatly simplify the civil engineering and construction of the pumping station structure, reducing the footprint and saving pumping station project cost up to 30%. Its successful development not only filled the domestic blank, but also marked the development of China's large-scale submersible pump and reached a new level.
Electronics Dedicated Mylar Tape,Colourful Polyester Mylar Tape,Mylar Adhesive Tape
Fenghua Jade Motor Co., Ltd. , http://www.nstape.com
Liu Yan endorsement brand Xi Shi Seoul fashion recommended
Mention Liu Yan, Liu Yan will naturally think of the chest, since Liu Yan has such advantages, will naturally attract a lot of underwear brands to win her endorsement, Qian Shi Er underwear brand success hand Liu Yan, let us now look at Sin Charlie fashion underwear charm it.
Xi Sier - Liu Yan endorsement of the underwear brand, you see such a Qian Shi Er such a color underwear set, simple colors may be more suitable for spring and summer, regardless of wearing any color of clothing will not have the color embarrassment Feel, how do you like this underwear suits?
Of course, high-quality products are also on the one hand, healthy fabrics can not be ignored focus, Qian Shi Er adjustable underwear brand with more comfortable fabrics and chic design to reflect the advantages of underwear, wear it you can become more confident Charm, a life that can make you more wonderful Qian Shi Er underwear How can you ignore it?
Rayon Fabric,Viscose Fabric,Visocse Lycra Fabric
Nylon Fabric,Polyester Fabric Co., Ltd. , http://www.nsgreyfabric.com
QYW100-36 Submersible Pump Drainage submersible sewage pump
QYW100-36 Submersible Pump Drainage Sewage Submersible Pump Today's Order Information Free Shipping! Morning latest buyers information free to send! Punch grab Rob here! QYW-type sewage sediment submersible sewage submersible sewage sewage pump sewage submersible pump parameters, QYW pneumatic submersible pump specifications QYW25-45 pneumatic pump, QYW100-36 submersible pumps, submersible pump manufacturers, supply a variety of submersible pumps QYW100-36 pneumatic Sediment sewage submersible pump Product introduction QYW100-36 Pneumatic sediment submersible sewage pump main technical parameters Model representation QY --- vane air motor W --- sewage submersible pump main technical parameters Head: 45-10 m Flow: 25 -38 cubic meters / hour Speed: 3500-4000 r / min Working pressure: 0.4-0.7 MPa Gas consumption: 5-6 m3 / min Fuel consumption: 50 ml / h Total weight: 31 kg Dimensions: (LWH) mm (excluding connectors) QYW100-36 wind sewage submersible pump is designed based on the new QYQ100-36 wind pump. The pump looks beautiful, small size, heavy weight flow, over-current part of the suction structure, the impeller is semi-open to use HT200 material, available through the red
Swimming Pool Chemicals，Dry Acid，Hardness Increaser
Calcium Hypochlorite Co., Ltd. , http://www.nsswimmingpoolchemical.com
Pajamas to what kind of good
Pajama pajamas, but the focus is a "sleep" word. Only good pajamas, you can sleep better, you will be more and more beautiful. But women generally do not just let themselves be satisfied with comfortable pajamas, of course, beautiful! Woman's heart is now beautiful and comfortable pajamas to you.
Soft beige like ceramic gives the same feeling. Lace trimming, but also noble and elegant. The beauty of oriental women is fully highlighted in the home service, your elegant taste reflected. Lace trimming the sleeves, bring out a woman's delicate life. Small lace collar, which looming the skin, make you particularly sexy and charming.
Even the pink, for the woman to wear or to design is particularly delicate. It may not be as beautiful as a skirt designed elegant, but for skin-care degrees or pay attention, it will not be more than the other sections of the ground, the value of the color will not go worse naturally. To know a woman's pursuit of beauty and reliance on the bed but no one can be hostile.
Women's heart pajamas is to bring you the comfort with your beauty and pleasure, Women's beauty come from women'sheart!
Elastic Waist Pants,Tencel Pants,Chino Pants,Cotton Pants
Dresses,Tank top,Tops Co., Ltd. , http://www.nsclothings.com
QYW25-45 blade submersible pumps, air pump
QYW25-45 blade submersible pump, pneumatic pump QYW25-45 submersible pump, QYW25-45 pneumatic pump, QYW25-70 pneumatic pump Today's new order information free shipping! Morning latest buyers information free to send! Punch grab Rob here! Structure and working principle: The pump consists of gas motor, water pump, oil mist, pipe fittings and muffler and other five parts. QYW-25-45 type pneumatic sewage submersible pump model representation QY --- vane air motor W --- sewage submersible pump 25 --- Rated flow Q = 25 cubic meters 45 hours --- Rated head H = 45 Meter QYW series of submersible pneumatic submersible pump blade submersible pump QYW type of pneumatic submersible submersible sewage pump safe and reliable sewage pump, qyw submersible pump QYW type pneumatic submersible sewage sewerage submersible pump is to maintain the original product traditionally adopted a highly efficient Section of the hydraulic model of the vane air motor into the exhaust hole made an improved and rational arrangement of the wind pump performance has been significantly improved. QYW-20-25 10-20 25-10 0.3-0.5 3000-3500 1.5 14 350 × 200 × 500 10 QYW-25-45 15-25 45-15 0.4-0.5 4000-4500 4-5 14 350 × 200 × 510 31 QYW-25-70 25-38 70-20 0.4-0.6 4500-5000 4-5 14 350 × 200 × 510 31 QYW25-45 Pneumatic Sewage Sewage Submersible Pump Submersible Pump What are the parts? : By the pump, impeller, pump cover, pump seat and other components. Impeller mounted on the rotor shaft, tighten the impeller nut, fitted pump body, pump seat.
Rubber Pipe Test Plug,Rubber Pipeline Plug,By-Pass Stoppers
Rubber Seal Strip Co., Ltd. , http://www.nsrubberseal.com
Application of Frequency Control Technology in Oil Field Pumping Unit
Abstract: The oil pump is the main energy consumption equipment in the production and operation of the oil depot. Due to the mismatch between pump characteristics and pipeline characteristics, it is necessary to control the flow of the outlet valve of the oil pump according to the operating conditions to meet the needs of the production process. This flow adjustment method produces a large pump tube pressure difference before and after the outlet valve of the oil pump, and a large amount of energy is consumed before and after the pump outlet valve, resulting in the waste of energy. In the South a depot 6KV / 630KW KDY750-75 × 4-type transmission pump unit to promote the use of a set of high-pressure frequency control system produced by Leader Huafu company to achieve by changing the speed of the pump for different conditions adjustment, Elimination of pump tube pressure differential throttling loss, reducing oil consumption, saving energy and improve the process.
First, the question raised
South Oil Depot of Daqing Oilfield mainly receives oil from the two major oil production plants, Oil Production Plant No. 1 and No. 2 Oil Production Plant, with a total reserve of 50 × 104m 3 and 5 oil pump units. The main technical parameters of the oil pump unit are shown in Table 1.
Since the oil pump and the oil characteristics of the pipeline do not match (the pump selection process, it is impossible to select the exact match with the characteristic line transfer pump), different conditions of actual operation, by adjusting the feed pump for an outlet valve to Adjust the flow, according to statistics 5 oil pump in a single pump, double pump, three pumps in parallel operation, three different operating conditions, the maximum opening of the oil pump valve outlet does not exceed 10% (more than 10% Pump motor exceeds the rated current and cause the motor overload operation). Resulting in the pump valve outlet before and after the existence of a larger pump tube pressure difference, pump outlet valve throttling loss of a lot of energy, the pump made a lot of useless, shortening the maintenance period and service life of the pump unit, different Operating conditions under the pump outlet valve before and after the pump pressure differential statistics as shown in Table 2.
Note: The data in the above table is based on the statistics of actual operating conditions of South Oil depot in 2002, the data in the table are average.
As can be seen from Table 2, in the single-pump, double-pump parallel, three-pump parallel operation modes, the pump outlet valve has an average of 1.2Mpa, 0.7Mpa and 0.4Mpa throttling losses. In the pump outlet valve before and after the three conditions (single pump, double pump in parallel, three pumps in parallel) as a result of the pump outlet throttle throttling loss arising from:
N loss i = 0.278P loss iQi
Where: N loss i: under different conditions of the valve throttling loss of power, KW
P loss i: under different conditions of the valve throttling loss pressure, Mpa
Qi: single pump displacement under different conditions, m 3 / h
N loss 1 = 0.278 × 1.2 × 750 = 250KW 250KW / 630KW = 39.7%
N loss 2 = 0.278 × 0.7 × 700 = 136KW 36KW / 630KW × 100% = 21.6%
N loss 3 = 0.278 × 0.4 × 640 = 71KW 71KW / 630KW × 100% = 11.3%
As can be seen from the above calculation, under the three conditions of single pump, double pump in parallel and three pumps in parallel, the throttling loss of the outlet valve of the oil pump accounts for 39.7%, 21.6% and 11.3% of the rated power.
Visible, energy waste is very alarming. Therefore, it is necessary to apply the variable frequency speed regulation technology on the pump unit to achieve the operating conditions based on the same bath, to meet the operating conditions through variable frequency operation, the pump outlet valve fully open, to avoid throttling loss of the pump outlet valve .
Chicken Coop,Metal Industrial Chicken Coop,Poultry Farm Shed with High Quality Steel
Main Equipments Co., Ltd. , http://www.nspoultryequipment.com
Both girls can also sexy Vatican you wave underwear
As a girl is a happy thing, because at the same stage, you can wear to take to show their multiple qualities, sometimes elegant, sometimes sexy, of course, can sometimes reflect your deep feelings of the girl. Both girls can be sexy, let Vatican you wave underwear to meet you.
Every girl's youth eager to have a lollipop, sweet and greasy sugar seems to be the joy of life. You see the Vatican kappa underwear such a combination of blue and pink suits, fresh colors with your heart full of girls show heart-shaped appearance, cute girl flu is bound to be fascinated.
Pink has always been the color of girls dreams, you see such a lotus root pink suit, thought it was very fresh little girl's dress, but the Vatican kappa underwear style design and tulle embellishment, all of a sudden let you Embodies the sexy charm of the mature woman, how to look are very moving appearance, make you become confident enough Oh.
Cashmere Knitwear,Cashmere Scarf,Long Scarf
Swimwear,Sweater,Tops Co., Ltd. , http://www.nssweater.com
What underwear effect of milk received good? To choose on the election Dan Beizi high side than underwear
You may disagree with you at the beginning, but when it really takes root, it's not just that it affects beauty. So, do not pay attention to your innocuous little fuss, strangle it in the shackles which is a wise move. Put on Dan Beizi high side than underwear , let it nowhere to hide, obedient surrender.
If you are a skinny body, the production of furs only one reason, that is, you did not wear underwear or choose not suitable for their underwear. So, you have to do is put on enough to accommodate all your underwear rebellious fuck, mysterious and sexy black coupled with simple style, sultry invisible, to solve the only hidden chest, afraid they are not charming enough?
For senior Yan control sister, may be more popular in this underwear, after all, in the shape enough to capture the hearts of friends, elegant lace for your elegant charm points, the same high-side design, called "Vice Milk killer ", there are milk pro worry parents, do not hesitate friends, and quickly take it home!
Picture credit: Dan Bei Zi
Fabric Colorful Shoelaces,Polyester Shoelaces,Flat Shoelace
Silicone Wristband Wristband Co.,Ltd , http://www.nslanyard.com
QYW25-45 pneumatic submersible pump mining sewage submersible pump
Pneumatic sewage pumps, pneumatic submersible pumps, submersible sewage pumps, submersible pumps factory direct cheap; all kinds of pneumatic sewage pumps, everything, quality assurance; always welcome to consult the sewage pump, to serve you is our Honored. QYW25-45 pneumatic sewage pump, pneumatic submersible pump QYW25-45 pneumatic submersible pump, mining sewage submersible pump, pneumatic sewage sediment submersible pump, the pump beautiful appearance, small size, light weight, large flow, over-current Part of the use of suction structure, the impeller is semi-open switch to HT200 material, by ≤ 14MM particles, sewage capacity, will not be because of small solid particles or fiber inhalation and plugging, will not be abrasive media Inhaled and prematurely damaged. Specifications and main technical parameters: Flow: 25m3 / min Head: 70m Air pressure: 0.4-0.7 MPa Air consumption: 5-6 m3 / min Weight: 31KG Who knows the submersible pump maintenance mode?
Alloy Steel Pipe End Cap,Alloy Steel Cap,Pipe Cap
,Square Pipe Steel Tubes CO.,Ltd , http://www.ns-pipefitting.com
Submersible Pump FWQB30-70 Turbine Sewage Submersible Pump
Turbine sewage submersible pump FWQB30-70 Turbine sewage submersible pump, FWB20-50N-type wind turbine submersible pump, FWB35-20-type wind turbine submersible pump Mining Turbocharged submersible pumps, wind turbine submersible pump The latest today Valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! FWQB series of pneumatic sediment discharge submersible sewage pump is a non-electric, compressed air powered submersible pump, free from power, humidity and other conditions, especially the need to have an explosion-proof electric submersible pump has irreplaceable safety and reliability. Turbine submersible pumps, is a new type of high efficiency, high-lift drainage, wind turbine submersible pumps are mainly used in mine development, digging tunnel and shaft well construction drainage. Turbine submersible pump This type of turbo submersible pump is our company a number of experts, senior engineers through research and analysis, to avoid weaknesses, based on the original wind pump, to maintain the original features of the traditional products have made major breakthroughs in improvement. Turbine submersible pumps in the power section uses a vane air motor, automatic centrifugal speed control and other agencies to ensure that the rated range of high-speed operation, turbo submersible pump is a mine dig wells, the ideal drainage tool. What are the submersible pump models?
Othersl Hair Dryer,Hotel Hair Dryer,High Speed Hair Dryer
Manual Soap Dispenser CO.,Ltd , http://www.nstrashcan.com
Aimer 3. 8 Birthday Treatments | Perfect Transformation Just because I met you
March 8 is the love of the brand birthday breeze was blowing, the wind and King Ming Zhang Lin adore the joy of spring with joy
Love brand spokeswoman Zhang Zilin
Whether you also want to small partners like Zi Lin from inside out elegant fashion
Zi Lin with the paragraph | [transformation] series of design manuscripts
As a fan of Zixin, we blessed Actress with the same section bra [Transformation] series are now listed goddess models, how can you miss?
[Transformation] series Siamese model cup bra
Mesh fabric, spring and summer wear no trace of breathable, comfortable clothing seamless extension of the fabric design to achieve the effect of inclusive breasts
[Transformation] series sandwich cup bra
Sandwich die cup, feel soft and light will be extended to the non-marking fabric bowl mouth and chest elegant convergence even if the Summer Dress is not exposed
【Metamorphosis】 series without cup model bra
Cup table at the same time taking into account the traceless and beautiful Bra rear than the use of non-marking fabric light, breathable, decompression, traceless armpit slightly higher details of the details of the process to properly embellish the fat
Perfect metamorphosis just because you just met your star with the money it? Simple and natural home products also bring spring ~
【DANCING LACE】 The series is made of smooth mercerized cotton with more luster, comfortable and skin-friendly collar georgette design with more refined, elegant fashion
More spring and summer new products are available now, waiting for you to choose!
Kid Clothes,Baby Clothes,Fashion Children Sport Wear,Children Clothes Suits
children-girls-summer CO.,Ltd , http://www.nsbabyclothes.com
FWQB30-70 wind turbine sewage submersible pump sewage pump
Fenghuang turbine sewage submersible pump, FWQB30-70 turbo sewage submersible pump mining explosion-proof sewage pump, submersible sewage pump, sand pump, mining sand pump, mine explosion-proof sand pump, mining sewage Submersible sewage pump, submersible sewage pump, submersible sewage pump, submersible sewage pump, gale pump, small wind pump and other products FWQB30-70 Submersible Pump Turbine Submersible Pump Price , Submersible Pump Submersible Pump Wholesale, FWQB30-70 Submersible Pump Submersible Pump Price, Machinery (1) Often check the submersible pump mechanical seal situation. Open the hole screw, release a small amount of oil, such as oil contains moisture, then the grinding block (or under the grinding block) seal has leaked, the seal box should be replaced and add a new cooling oil. If there is a lack of oil or bad oil in the oil hole, fill it with oil (No. 5 or No. 10 mechanical oil, sewing oil or transformer oil) or replace with new oil. (2) For submersible pumps with new or changed grinding blocks, the sealing plug of water should be swung open after 50 hours of use to check the leakage of oil (water). Tai'an Dingxin takes the responsibility of mine safety production as its responsibility and devotes itself to the research and development, production and supply More secure mining equipment, please contact us! FWQB series submersible pump manufacturers do not love direct?
Plain MDF,Raw MDF,MDF Price
MDF,Furniture,chipboard CO.,Ltd , http://www.nsedgebanding.com
Mining turbine submersible pump BQF16-15 pneumatic submersible pump
BQF16-15 pneumatic submersible pump Turbine submersible pump, BQF16-15 pneumatic submersible pump, pneumatic submersible pump effect, pneumatic submersible pump explosion proof, pneumatic submersible pump with proof card you Fengyun submersible sewage pump, pump , Wind turbine submersible pump, pneumatic sewage pump, mining wind pump, BQF pneumatic submersible pump BQF-Ⅰ, BQF-Ⅱ, BQF-Ⅳ three models. two. Place of use for mine development, digging tunnel or shaft shaft construction of different environmental conditions such as drainage work. . Is a high efficiency, high-lift mine wells, wells the ideal drainage tools. BQF series of wind driven submersible pump will be full of new vitality, a new generation of drainage equipment. Flow rate / head pressure (MPa) Speed (rpm) Air consumption (m3 / min) Intake pipe diameter (mm) Outlet pipe diameter size Weight (kg) BQF-Ⅰ 17/70 0.5 3850 4-4.5 25 50 320 × 275 × 370 25 BQF-Ⅱ 25/50 0.5 3850 4-4.5 25 50 320 × 275 × 370 25 BQF-Ⅳ 20/25 0.4 3000 1.5 25 38 230 × 200 × 350 10 I. Structural features: ① This kind of pneumatic submersible pump according to The actual needs of domestic mine construction, absorbing the advantages of the same type of advanced products abroad, using a series of advanced technology, it has the advantages of small size, light weight, novel structure, easy operation, easy to install, repair and move. The pump uses a vane air motor in the power section, with automatic centrifugal governor structure, to ensure that the rated speed range operation ② BQF series of wind submersible pumps by our company a number of experts, senior engineer research, to avoid weaknesses, to tackle problems , On the basis of maintaining the size and shape of the original product, made major breakthrough improvements. Where there is high-lift high-flow pneumatic submersible pump?
Forged Flange,Welded Flange,Strainless Steel Flange
Ductile iron pipe fittings CO.,Ltd , http://www.ns-valve.com
Italy CSF INOX drum pump
A variety of materials and a variety of construction methods make CSF bucket pump suitable for a variety of occasions, especially the transport of high viscosity materials. His special design allows the pump to be used in a wide range of applications that require flow changes, feeding, vat reversing and high pressure cycles. The pump is explosion-proof air motor drive, driving pressure from 0 to 150 bar, the maximum flow rate up to 80 l / min. Sealing materials are also specially selected according to different delivery materials to ensure that the pump life and low leakage rate. Pump material can be used carbon steel, stainless steel 304 and 316 stainless steel.
Welding Helmet,Welding Mask,Auto-Darkening Welding Helmet
Mig Welding Torches,Mig Spare Parts Co., Ltd. , http://www.nsweldingparts.com
BQF18-15 Turbine submersible pump mining wind submersible pumps
BQF18-15 Turbine Submersible Pump Submerged Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump BQF-Submersible Pump BQF-Ⅰ, BQF-Ⅱ, BQF-Ⅳ. BQF series of wind driven submersible pumps by our company a number of experts, senior engineers research and analysis, to avoid weaknesses, to tackle key problems, while maintaining the original product structure dimensions based on the major breakthroughs made improvements. Today's latest valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! First, redesigned the parameters of the air motor, greatly increased the air motor shaft power. Second, according to the noise reduction measures, the structure of the muffler in the housing is designed, the intake position is adjusted, the exhaust gas flow collides in the housing, the cross interference expands, and then it enters the external muffler with independent intellectual property rights. Underground conditions of working conditions. Third, the blade strength and thickness of the air motor re-calculated according to the latest theoretical calculations at home and abroad to improve the bending strength of the blade bending; and the leaves were treated with a special process so that the blade wear durable, its degree of wear is Other wind pump manufacturers dozens of times the blades, reducing the number of maintenance replacement blades, cylinders, greatly improving the economic benefits of user units. Fourth, in the vortex chamber configuration new composite impeller (the leaf is applying for utility model patents), to further improve the head. Model Flow rate (m3 / h) Head (m) Working pressure (MPa) Rated speed (rpm) Air consumption (m3 / min) Intake pipe diameter (mm) Outlet pipe diameter (mm) Dimensions L × W × H ) Weight (kg) BQF-I 17 70 0.5 3850 4-4.5 25 50 320 × 275 × 370 25 BQF-Ⅱ 25 50 0.5 3850 4-4.5 25 50 320 × 275 × 370 25 BQF-Ⅳ 20 25 0.4 3000 1.5 25 38 230 × 200 × 350 10 Submersible pumps Turbocharged submersible pump Where to buy high quality and cheap submersible pump?
Temporary Fence,Security Fence,Temporary Fencing
Perforated Metal Sheet,Belt Co., Ltd. , http://www.nslinkfence.com
BQF 20-50 Submersible Pump Pneumatic Sewage Pump
BQF 20-50 Submersible Pump Pneumatic Sewage Pumping Submersible Pump Submersible Pump Manufacturers, Submersible Pump Stainless Steel Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Submersible Pump Pumps such pneumatic submersible pumps according to the actual needs of domestic mine construction, absorbing the strengths of the same type of advanced products abroad, using a series of advanced technology, it has a small size, light weight, novel structure, easy operation, ease of installation, Maintenance and mobile and so on. For mine development, digging tunnel or shaft shaft construction of different environmental conditions, such as drainage work. The pump uses a vane air motor in the power section and features an automatic centrifugal governor to ensure operation over the rated speed range. Is a high efficiency, high-lift mine wells, wells the ideal drainage tools. Today's latest valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! Flow rate / head pressure Speed Air consumption (m3 / min) Intake pipe diameter Outlet pipe ID size Weight BQF-Ⅰ 17/70 0.5 (MPa) 3850 (rpm) 4-4.5 25 (mm) 50 (mm) 320 × 275 × 370 25 BQF-II 25/50 0.5 (MPa) 3850 (rpm) 4-4.5 25 (mm) 50 (mm) 320 × 275 × 370 25 BQF-Ⅳ 20/25 0.4 (MPa) 3000 (rpm) 1.5 25 ( mm) 38 (mm) 230 × 200 × 350 where to buy submersible pump? Sediment submersible pumps, pneumatic sewage pumps, sewage submersible sewage pumps, turbine submersible pumps, submersible pumps, mining submersible pumps, FWB-type wind turbine submersible pumps, BQF pneumatic submersible pump, FWQ wind turbine submersible pumps, wind Pumps, turbine submersible pumps
Rebar Coupler,Rebar Machine,Rebar Splicing Coupler
Steel Wire Co., Ltd. , http://www.nssteelwire.com
Application of High Voltage Frequency Converter in Cooling Water Circulation Pump
Abstract: This paper introduces the application of domestic high-voltage frequency converter in Quzhou Juhua Sulfuric Acid Plant in Zhejiang Province. The operating data after the frequency conversion of the cooling water circulating pump shows that the reform is successful and the energy-saving effect is obvious.
Keywords: high-pressure frequency converter cooling water circulation pump
Abstract: The paper introduces the application of high voltage inverter in cooling water cyclic pump in the factory of vitriol THQJ. The running data indicate that the alternation is successful and the effect of saving energy is distinct.
Key word: High voltage inverter Cooling water cyclic pump
1 Introduction:
Zhejiang Quzhou Juhua sulfuric acid plant is China's first batch of their own design, manufacture, installation of key sulfuric acid production enterprises, is the largest in Zhejiang Province sulfuric acid plant. In sulfuric acid production process, the need for water-cooled plate cooling, cooling water circulation pump is an important production process of sulfuric acid equipment, the cooling water circulation pump in the past are not speed, the use of outlet valve to control water flow and pipe network pressure, due to equipment Selection is based on the maximum load conditions to type in the actual operation of the equipment left a larger margin, the cooling water flow and pressure through the Cooling Water Pump out, the inlet pipe on the regulating valve to adjust, causing the motor Operating efficiency is low, resulting in power waste, in order to reduce production costs, after demonstration, the decision to use landscape brand JD-BP37-type high-voltage inverter cooling water circulating pump frequency conversion energy-saving transformation to solve the energy waste problem. Cooling water circulating pump working principle shown in Figure 1, three circulating pump two open one prepared.
Figure 1 cooling water circulation pump working principle diagram
2, the user cooling water circulating pump and supporting motor related parameters:
Pump Model: 500S-35 single-stage double-suction centrifugal pump;
Flow: 561L? S Speed: 970r / min
Head: 35m
Motor power: 280KW
Voltage: 6000V
Current: 35.2A
Speed: 985r / min
3, the new scenery JD-BP37-type high-voltage inverter
3.1 JD-BP37-type high-voltage inverter profile
JD-BP37-type high-voltage inverter using the latest IGBT-based control devices, all-digital, color LCD touch screen control, high reliability, easy operation, high-performance design for the goal of high-quality inverter. After years of research and development, the products have been widely used in metallurgy, petroleum, chemical, power, cement, water supply and drainage, pharmaceutical, papermaking, sewage treatment and other industries. Become a boutique, by no means accidental.
Scenery high-voltage inverter, the use of a number of low-voltage inverter power unit in series to achieve direct high-voltage output, the use of 6kv high-voltage inverter, transformer has 18 groups to pay edge winding, divided into 6 power units? Phase, a total of 18 A unit, using 36 pulse rectifier, the input harmonic components meet the national standard, high-voltage inverter system structure shown in Figure 2, the main circuit of the circuit shown in Figure 3, the bypass branch using SCR module.
Figure 2 high-voltage inverter system structure
Figure 3 unit circuit main circuit
3.2 JD-BP37-type high-voltage inverter main technical performance
3.2.1 High-voltage source converter, direct 6KV input, direct 6KV output, without any output transformers or filters, suitable for ordinary high-voltage motors, motor, cable insulation without damage.
3.2.2 high input power factor, current harmonic small, no power factor compensation, harmonic suppression device.
3.2.3 modular design of the unit circuit, easy maintenance, good interchangeability.
3.2.4 High-voltage main loop and the controller for the optical fiber connection, strong and weak electrical isolation, safe and reliable.
3.2.5 perfect fault detection, accurate fault protection and accurate positioning display and alarm.
3.2.6 Built-in PLC, to adapt to the changing needs of the scene.
3.2.7 The control power and high voltage are independent of each other, no high voltage can detect the inverter output, easy to debug on site and train operators, easy to maintain.
3.2.8 power unit after 24 hours of high temperature aging, 150% load test, high reliability.
3.2.9 Chinese Windows interface, color LCD touch screen operation.
3.2.10 can receive and output multiple industrial standard signal.
3.2.11 can print out the operation report.
4, control theory and electrical equipment circuit diagram
Inverter control 3 # circulating pump, 2 #, 1 # circulating pump open one prepared. Now the cooling jellyfish tube pressure for a given amount, according to the process of the mother tube pressure adjustment circulating pump speed, pressure signal taken from the main network, the target pressure value is set at 0.24Mpa.
Electrical equipment circuit diagram shown in Figure 4
5, high voltage inverter energy saving situation introduction
Equipment renovation project was completed in January 2005, a high-voltage inverter test run successfully, the normal operation, the frequency of 40Hz operation to ensure the normal temperature of circulating water. The energy-saving related data:
工 ⒈ power frequency operating data:
May 27 14:30 Operating frequency 50Hz Input current 23.8A Input voltage 6KV
May 27 21:35 Operating frequency 50Hz Input current 26.4A Input voltage 6KV
May 28 08:00 Operating frequency 50Hz Input current 25.2A Input voltage 6KV
May 28 21:00 Operating frequency 50Hz Input current 24.8A Input voltage 6KV
May 29 06:25 Operating frequency 50Hz Input current 24.1A Input voltage 6KV
Power frequency average operating current 24.86A Power factor COSΦ1 = 0.85
⒌ ⒉ inverter operating data
May 27 11:00 Operating frequency 41: 55Hz Input current 13.0A Input voltage 6KV
May 27 12:00 Operating frequency 41: 55Hz Input current 13.1A Input voltage 6KV
May 27 13:00 Operating frequency 41: 55Hz Input current 13.0A Input voltage 6KV
May 27 14:00 Operating frequency 41: 55Hz Input current 13.2A Input voltage 6KV
The average operating current of the inverter is 13.07A, the power factor is COSΦ2 = 0.98
Annual electricity savings:
(I × COSΦ1-I × COSΦ2) × Ua × 1.732 × 24 hours × 350 days = 718,000 degrees
Annual savings in electricity costs: annual savings of electricity × 0.5 yuan / kWh = 359,000 yuan
Frequency-saving operation rate of 40%.
Equipment operating frequency of 35Hz, you can reach the process of the water pressure, Spring, winter and autumn three seasons equipment can be run at 35Hz, saving rate of 50% or so, according to the current 41Hz operation, the annual saving of 710,000 Degree, save electricity 359,000 yuan, the cost recovery period of 1.8 years.
6, concluding remarks
Scenery licensing high-voltage inverter In Juhua AG sulfuric acid plant cooling water circulation pump application, you can make the cooling water circulation pump with the load changes to regulate the cooling water flow to achieve the purpose of energy conservation, while the circulating pump soft-start protection Pumps, motors, reduce pump and motor maintenance costs, improve the cooling water circulation pump operating conditions, reducing the cost of production. In the high-voltage frequency conversion technology is more mature today, I believe that domestic high-voltage inverter, in various industries will have a better performance.
The undertaking unit of this project Zhejiang Yi Jia Energy Saving Equipment Co., Ltd. is a professional energy service provider. Through the 280KW / 6000V high-voltage inverter installation, commissioning, operation, but also reflects the energy-saving equipment company in Yi Jia higher energy-saving industry, professional quality and technical standards.
Keywords: high-pressure frequency converter cooling water circulation pump
Abstract: The paper introduces the application of high voltage inverter in cooling water cyclic pump in the factory of vitriol THQJ. The running data indicate that the alternation is successful and the effect of saving energy is distinct.
Key word: High voltage inverter Cooling water cyclic pump
1 Introduction:
Zhejiang Quzhou Juhua sulfuric acid plant is China's first batch of their own design, manufacture, installation of key sulfuric acid production enterprises, is the largest in Zhejiang Province sulfuric acid plant. In sulfuric acid production process, the need for water-cooled plate cooling, cooling water circulation pump is an important production process of sulfuric acid equipment, the cooling water circulation pump in the past are not speed, the use of outlet valve to control water flow and pipe network pressure, due to equipment Selection is based on the maximum load conditions to type in the actual operation of the equipment left a larger margin, the cooling water flow and pressure through the Cooling Water Pump out, the inlet pipe on the regulating valve to adjust, causing the motor Operating efficiency is low, resulting in power waste, in order to reduce production costs, after demonstration, the decision to use landscape brand JD-BP37-type high-voltage inverter cooling water circulating pump frequency conversion energy-saving transformation to solve the energy waste problem. Cooling water circulating pump working principle shown in Figure 1, three circulating pump two open one prepared.
Figure 1 cooling water circulation pump working principle diagram
2, the user cooling water circulating pump and supporting motor related parameters:
Pump Model: 500S-35 single-stage double-suction centrifugal pump;
Flow: 561L? S Speed: 970r / min
Head: 35m
Motor power: 280KW
Voltage: 6000V
Current: 35.2A
Speed: 985r / min
3, the new scenery JD-BP37-type high-voltage inverter
3.1 JD-BP37-type high-voltage inverter profile
JD-BP37-type high-voltage inverter using the latest IGBT-based control devices, all-digital, color LCD touch screen control, high reliability, easy operation, high-performance design for the goal of high-quality inverter. After years of research and development, the products have been widely used in metallurgy, petroleum, chemical, power, cement, water supply and drainage, pharmaceutical, papermaking, sewage treatment and other industries. Become a boutique, by no means accidental.
Scenery high-voltage inverter, the use of a number of low-voltage inverter power unit in series to achieve direct high-voltage output, the use of 6kv high-voltage inverter, transformer has 18 groups to pay edge winding, divided into 6 power units? Phase, a total of 18 A unit, using 36 pulse rectifier, the input harmonic components meet the national standard, high-voltage inverter system structure shown in Figure 2, the main circuit of the circuit shown in Figure 3, the bypass branch using SCR module.
Figure 2 high-voltage inverter system structure
Figure 3 unit circuit main circuit
3.2 JD-BP37-type high-voltage inverter main technical performance
3.2.1 High-voltage source converter, direct 6KV input, direct 6KV output, without any output transformers or filters, suitable for ordinary high-voltage motors, motor, cable insulation without damage.
3.2.2 high input power factor, current harmonic small, no power factor compensation, harmonic suppression device.
3.2.3 modular design of the unit circuit, easy maintenance, good interchangeability.
3.2.4 High-voltage main loop and the controller for the optical fiber connection, strong and weak electrical isolation, safe and reliable.
3.2.5 perfect fault detection, accurate fault protection and accurate positioning display and alarm.
3.2.6 Built-in PLC, to adapt to the changing needs of the scene.
3.2.7 The control power and high voltage are independent of each other, no high voltage can detect the inverter output, easy to debug on site and train operators, easy to maintain.
3.2.8 power unit after 24 hours of high temperature aging, 150% load test, high reliability.
3.2.9 Chinese Windows interface, color LCD touch screen operation.
3.2.10 can receive and output multiple industrial standard signal.
3.2.11 can print out the operation report.
4, control theory and electrical equipment circuit diagram
Inverter control 3 # circulating pump, 2 #, 1 # circulating pump open one prepared. Now the cooling jellyfish tube pressure for a given amount, according to the process of the mother tube pressure adjustment circulating pump speed, pressure signal taken from the main network, the target pressure value is set at 0.24Mpa.
Electrical equipment circuit diagram shown in Figure 4
5, high voltage inverter energy saving situation introduction
Equipment renovation project was completed in January 2005, a high-voltage inverter test run successfully, the normal operation, the frequency of 40Hz operation to ensure the normal temperature of circulating water. The energy-saving related data:
工 ⒈ power frequency operating data:
May 27 14:30 Operating frequency 50Hz Input current 23.8A Input voltage 6KV
May 27 21:35 Operating frequency 50Hz Input current 26.4A Input voltage 6KV
May 28 08:00 Operating frequency 50Hz Input current 25.2A Input voltage 6KV
May 28 21:00 Operating frequency 50Hz Input current 24.8A Input voltage 6KV
May 29 06:25 Operating frequency 50Hz Input current 24.1A Input voltage 6KV
Power frequency average operating current 24.86A Power factor COSΦ1 = 0.85
⒌ ⒉ inverter operating data
May 27 11:00 Operating frequency 41: 55Hz Input current 13.0A Input voltage 6KV
May 27 12:00 Operating frequency 41: 55Hz Input current 13.1A Input voltage 6KV
May 27 13:00 Operating frequency 41: 55Hz Input current 13.0A Input voltage 6KV
May 27 14:00 Operating frequency 41: 55Hz Input current 13.2A Input voltage 6KV
The average operating current of the inverter is 13.07A, the power factor is COSΦ2 = 0.98
Annual electricity savings:
(I × COSΦ1-I × COSΦ2) × Ua × 1.732 × 24 hours × 350 days = 718,000 degrees
Annual savings in electricity costs: annual savings of electricity × 0.5 yuan / kWh = 359,000 yuan
Frequency-saving operation rate of 40%.
Equipment operating frequency of 35Hz, you can reach the process of the water pressure, Spring, winter and autumn three seasons equipment can be run at 35Hz, saving rate of 50% or so, according to the current 41Hz operation, the annual saving of 710,000 Degree, save electricity 359,000 yuan, the cost recovery period of 1.8 years.
6, concluding remarks
Scenery licensing high-voltage inverter In Juhua AG sulfuric acid plant cooling water circulation pump application, you can make the cooling water circulation pump with the load changes to regulate the cooling water flow to achieve the purpose of energy conservation, while the circulating pump soft-start protection Pumps, motors, reduce pump and motor maintenance costs, improve the cooling water circulation pump operating conditions, reducing the cost of production. In the high-voltage frequency conversion technology is more mature today, I believe that domestic high-voltage inverter, in various industries will have a better performance.
The undertaking unit of this project Zhejiang Yi Jia Energy Saving Equipment Co., Ltd. is a professional energy service provider. Through the 280KW / 6000V high-voltage inverter installation, commissioning, operation, but also reflects the energy-saving equipment company in Yi Jia higher energy-saving industry, professional quality and technical standards.
Stabi Pipe,Pipe for Heating Pipe,Pe-al-pe Water Pipe
Frp Tank,Membrane Housing Co., Ltd. , http://www.nspprpipes.com
Pump selection of viscosity problems
Viscosity affects the performance problems of pump selection medium pump is large, the viscosity increases, the pump head curve decreases, the optimal conditions are head and flow fall, the rise and the power, Thus reducing efficiency. General parameters on the sample are the performance of the transport of water, when the transport of viscous media should be converted (different viscosity correction factor can be found in the relevant conversion chart). For transporting high viscosity slurries, pastes and viscous solution, it suggested the use of mortar pump, my company UHB-ZK corrosion resistant mortar pump can be applied to media with viscosity or with particles. 1, the use of this product is widely used: petrochemical, acid and alkali, non-ferrous metallurgy, automobile manufacturing pickling process, rare earth separation, pesticides, dyes, pharmaceuticals, paper, electroplating, radio, etc. acids, bases, salts, Organic solvents and other liquids, especially for conveying fine particles containing corrosive liquids. Particle diameter: ≤40 Head concentration: 30 ° C 2, the design features of the pump is cantilevered single-stage single-suction centrifugal pump using steel liner UHMWPE extraordinary excellent corrosion resistance and abrasion resistance. Operating temperature: -20 ° C to 95 ° C.
Stair Railing,Balcony Railing,Aluminum Extension Ladder Railing
Steel Grating,Miscellaneous Co., Ltd. , http://www.steel-grating-manufacturer.com
Pump performance from the pump to see the scope of application
From the pump performance range, giant pump flow up to hundreds of thousands of cubic meters per hour or more, while the micro-pump flow rate is less than dozens of milliliters per hour; pump pressure from the normal pressure up to 19.61Mpa (200kgf / cm2) above; the temperature of the liquid being transported as low as -200 degrees Celsius, the highest up to 800 degrees Celsius. Pumps deliver a wide variety of fluids, such as delivering water (clean water, sewage, etc.), fluids, acids and alkalis, suspensions, and liquid metals.
For example, raw materials, semi-finished products and finished products are mostly liquids in the production of the chemical and oil sectors, whereas the conversion of raw materials into semi-finished products and finished products requires complex processes that pump liquids and provide chemical reactions during these processes Pressure flow, in addition, in many devices also use the pump to adjust the temperature.
In agricultural production, pumps are the main irrigation and drainage machinery. A vast rural areas in our country, every year in rural areas require a large number of pumps, agricultural pumps in general account for more than half of total pump output.
Pumps are also the most widely used equipment in the mining and metallurgical industries. Mine need to pump drainage, in the mineral processing, smelting and rolling process, the need to pump water supply and so on.
In the power sector, nuclear power plants need nuclear main pumps, secondary pumps, tertiary pumps, thermal power plants require a large number of boiler feed pumps, condensate pumps, circulating pumps and ash pump.
In the national defense building, the regulation of aircraft flaps, tail rudders and landing gear, the rotation of warships and tank turrets, the ups and downs of submarines, etc. require the use of pumps. High pressure and radioactive liquid, some also require the pump without any leakage.
In the shipbuilding industry, the number of pumps used on each ocean going wheel is generally more than 100 and its type is also varied.
Others, such as urban water supply and drainage, steam locomotive water, lubrication and cooling in machine tools, transporting drifts and dyes in the textile industry, transporting pulp in the paper industry, and transporting milk and sugar foods in the food industry, require large quantities Pump.
In any case, pumps, pumps, running pumps, tanks, submarines, or drilling, mining, trains, ships, or everyday life are needed everywhere. This is the case, so the pump as a general machinery, it is an important product in the machinery industry.
For example, raw materials, semi-finished products and finished products are mostly liquids in the production of the chemical and oil sectors, whereas the conversion of raw materials into semi-finished products and finished products requires complex processes that pump liquids and provide chemical reactions during these processes Pressure flow, in addition, in many devices also use the pump to adjust the temperature.
In agricultural production, pumps are the main irrigation and drainage machinery. A vast rural areas in our country, every year in rural areas require a large number of pumps, agricultural pumps in general account for more than half of total pump output.
Pumps are also the most widely used equipment in the mining and metallurgical industries. Mine need to pump drainage, in the mineral processing, smelting and rolling process, the need to pump water supply and so on.
In the power sector, nuclear power plants need nuclear main pumps, secondary pumps, tertiary pumps, thermal power plants require a large number of boiler feed pumps, condensate pumps, circulating pumps and ash pump.
In the national defense building, the regulation of aircraft flaps, tail rudders and landing gear, the rotation of warships and tank turrets, the ups and downs of submarines, etc. require the use of pumps. High pressure and radioactive liquid, some also require the pump without any leakage.
In the shipbuilding industry, the number of pumps used on each ocean going wheel is generally more than 100 and its type is also varied.
Others, such as urban water supply and drainage, steam locomotive water, lubrication and cooling in machine tools, transporting drifts and dyes in the textile industry, transporting pulp in the paper industry, and transporting milk and sugar foods in the food industry, require large quantities Pump.
In any case, pumps, pumps, running pumps, tanks, submarines, or drilling, mining, trains, ships, or everyday life are needed everywhere. This is the case, so the pump as a general machinery, it is an important product in the machinery industry.
FRP Tank is used in clean water treatment, silica sand filtration, active carbon adsorption, exchange of ion exchange resin and many other process of water treatment. And it is used for eliminating the calcium ion and magnesium ion, activating water, sterilizing and removing algae, preventing and releasing contaminant, etc. Water softening machine could lower the total amount of salt, so it is widely applied to soften the supplying water in the air conditioner system and other systems and treat the domestic water.
And it is also widely applied in the boiler system, heat exchange system, industrial cooling system, central air-conditioning system and many other water related systems.
FRP tanks consist of the whole shaping thermoplastic HDPE liner and epoxy resin coated fiber glass reinforced plastic shell. The threaded structure in the top has obtained the national invention patent. (Patent NO.ZL201320280553.8 )
FRP Tank
FRP Pressure Tank,FRP Tank For Water Treatment,FRP Water Storage Tank
Zaoqiang Yaxin Environmental Protection Equipment Co., Ltd. , http://www.yaxinenvironment.com
Case Analysis for Customer Unreasonable Design
Everytime when we get customers' drawings or physical sample for inquiry and sampling. We would do evaluation by our professional experience here and feedback to our customer with better proposal for approval.
Here is one Case for sample as below:
Usually by three steps:
1) Point out the problem with technical data
2) Describe the difficulty or potentional defect by improper design
3) Solution and suggestion for improve
Our target is to help customers to process their required Wire Harness with goold quality. By fool-proofing in advance before mass production.
Data analysis depending on spec.
(1) Alpha wire insulation OD: 0.035"
(2) HIROSE( DF50A-11S-1C & DF50-2830SCFA)
1) From above spec, we can know HRS terminal DF50-2830SCFA is just suitable for wire OD: 0.0315"~0.0354"
2) But now the used alpha cable insulation is 0.035", which is very close to max 0.0354".
3) On the other hand, size 0.035" for alpha wire is just standard data from spec. It has tolerance too. The atucal measured size is 0.037", 0.038" which is more than the max 0.0354" for HRS terminal DF50-2830SCFA.
(Pls refer below pic 1, 2 for wire insulation measured size)
pic.1 
pic.2
Results: Depending on above analysis, present wire insulation size is not suitable with HRS terminal.
Difficulty during assembly & Potentional defect
As wire OD is bigger than the max 0.0354" for HRS terminal DF50-2830SCFA.
During assembling, only the first pin is very easy to be assembled to HRS connector. But from the second pins to pin 11 can only be half-insertion. So we have to use the sharp awl to help push the terminal to connector completely. It affects the productivity badly.
Above is Pressure direction and point
Potential defect would be caused by this kind of assembly method:
1) As terminal is too small, only sharp awl is workable to push terminal in connector. However it's very easy to cause terminal deformation or wire hurt (copper exposed) probelm. The damage can cause serious materials wastage problem too. Also Some small damage may not be found 100% promptly during assembling and inspection
2) As wire is too big to be placed in the HRS connector, if we force to push terminal in, all terminal would be inclinced to one side. Also the thin gap between neighbouring terminals may be broken a little. In that case, some intermittently short-circuit problem may not be found during testing.
Suggestion
1) Consult Alpha for simialr cable spec., still keep present wire gauge( 28AWG). Only make sure the insulation size max 0.035", (within φ 0.0315" to 0.0354") the smaller, the better.
2) To consult Chinese local supplier to make EQUIVALENT Alpha cable, the requirement FT4 need to re-confirm with suppleir first, once ok, we'll offer cable spec for approval.
the power Connectors we provide overmolding solutions and modular tooling.
We also offer to the OEM and distributor users a diversified line of strain / flex reliefs and grommets, such as Solid, Solid-Rib, Uniflex, Multiflex, in standard off the shelf or custom designs.
Overmolding the power connectors offers significant opportunities for cable improvements with higher pull strength not available with conventional backshells. Our technical staff is ready to help you from design and prototyping to small production run, assistance, and training.
Our team is ready to help with any of the following power connectors projects: overmolding mini fit jr. and mini-fit sr. connectors, , overmolded cables with micro fit terminations, sabre molded cable asemblies, amp duac overmolded power connectors, mate-n-lock power cables, power connector overmolding services, power connector molding, design and prototype of power cables across the board, small run molded power connecotrs , molded cable manufacturing, overmolding connectors for any power applications
Strain/flex Reliefs And Grommets
Strain Reliefs And Grommets,Flex Reliefs And Grommets,Cable Strain Reliefs,Cable Flex Reliefs,Cable Grommets,Molded Strain Relief
ETOP WIREHARNESS LIMITED , https://www.etopwireharness.com
订阅：
博文 (Atom)