Application of Frequency Control Constant Pressure Water Supply Equipment System

Frequency speed constant pressure water supply system applications With the reduction of system control pressure, frequency conversion water supply equipment operating conditions relative to the energy-saving effect is very obvious. This is mainly due to the control pressure is obtained by changing the voltage frequency during the operation of the inverter. Therefore, the consumed power and pressure loss decrease with the decrease of the system control pressure (ie, the flow rate); while the system control pressure Is obtained by increasing the pressure loss of the control valve 1, which increases the load on the pump and increases the power consumed by the pump. The experiments fully illustrate the enormous energy-saving benefits brought by the application of VVVF technology, especially for the system of variable frequency and constant pressure water supply with large load variation. For example: high-rise water supply, beer fermenter group refrigerant water supply system and so on. According to use, the building water supply is divided into two major categories of domestic water supply and fire water supply. In the life of water supply system constant pressure water supply pump water supply than other water supply has obvious advantages. For the fire pressure water supply equipment system, because the amount of water is calculated according to the maximum hour of fire water, and the choice of head is the most unfavorable point when the maximum water pressure required to calculate. In fact, the water consumption in the initial stage of the fire is from small to large and from less to more. At this moment, the head of the pump is always in an overpressure condition, and the pressure reaches the design value only when the amount of water used reaches the designed amount of water. Overpressure will give unfavorable factors to the safety and reliability of the firefighting and will be particularly unfavorable to the personal safety of firefighters. In addition, the firefighting system itself is also disadvantageous. The use of frequency conversion power frequency fire is an economical, advanced and practical fire water program. The advantages of frequency conversion water supply equipment system are: 1. Frequency conversion water supply equipment has the best energy-saving effect. 2. Pump units to achieve soft start mode, multiple pumps to achieve sequential start running, low noise and extend its service life and ensure the reliability of operation. 3. Speed ​​control operation, can be easily achieved constant pressure water supply, pressure adjustable, to avoid over-pressure in the early stages of fire or pump inspection problems. 4. Constant pressure water supply equipment automatic operation, easy to use. To sum up, for the occasions when the water flow changes frequently, it is a recognized and very effective energy-saving measure to adjust the water supply of the pump speed to achieve no throttling loss and greatly save the energy-saving effect compared with other water supply modes.

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