Pump accessory products --- diaphragm pressure tank

1, the structure and working principle of the pressure tank: The pressure tank is mainly composed of the valve cover, inflation port, airbag, carbon steel tank, flange, when connected to the water system, the main role as an accumulator, When the system water pressure is greater than the nitrogen pressure between the expansion tank carbon steel tank in the airbag, the system water will be squeezed into the expansion tank airbag under the effect of system pressure, so that the nitrogen between the airbag will be compressed, So that its volume decreases, the pressure increases; the second is to increase the system of water to accommodate space, the system pressure decreases until the system water pressure and the nitrogen pressure between the capsule in the balloon to reach a new balance before stopping water . When the system water pressure is less than the gas pressure in the expansion tank, the water in the airbag will be squeezed out by the pressure of the nitrogen gas between the airbag and the tank, and the water in the airbag will be replenished back to the system. The volume of nitrogen increases between the pressure drops until the two reach a new equilibrium, the water stops squeezing back from the airbag system, the pressure tank plays a role in regulating system pressure fluctuations. The structure is as follows: The tank is pre-filled with nitrogen at the factory, the outside of the tank is paint layer, the inlet and outlet of the tank are directly connected with the system through the tee or the metal hose, and the exhaust valve interface can be drained out of the system and the airbag in time Of the water overflow of the air can also be used to directly close the gate valve to prevent water from overflowing the top of the dust cap is filled / deflated port, add nitrogen or let off some of the gas, 750L and above the charge / discharge port is not in this position. 2, the pressure tank as a result of the regulation of airbags, widely used in the water system of small-scale pressure fluctuation control. Pressure tank used in hot water heating system, mainly used to eliminate the pressure fluctuations caused by changes in water temperature, to avoid damage to other system control components. If used in variable frequency water supply, you can eliminate the pressure fluctuations caused by the pump opening and closing, reducing the frequency of the pump start, greatly extending the life of the pump. Applications such as water supply to residential buildings or other water supply equipment eliminate the water hammer effect caused by other valve switches and protect the entire system from the impact of water hammer. 3, Diaphragm pressure tank role: Diaphragm pressure tank can play a fully automatic water supply, you can also adjust the water fluctuations, reducing the frequency counter start. 4, the different types of pressure tank difference 1) enamel water tank for 30 m head pump, low pressure water supply. But the factory pressure test is 60 meters. (No air bag) 2) small tank: high-rise water supply only to ease the role of water hammer pressure. (With air bag) 3) Large pressure tank can play the role of not frequently start the pump. (With air bag) 5, supporting the water tank 1) When the water tank with the control cabinet only need to contact the pressure gauge, no pressure switch, frequency control cabinet to be equipped with remote pressure gauges, ordinary control cabinet to distribution contact pressure Table 2) Unnecessary when the cabinet should be equipped with a common pressure gauge and pressure switch, pay attention to the pump 220V with 220V pressure switch, or with 380V pressure switch

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