The working principle of the constant pressure water supply system and how to do?

Constant pressure water supply system is widely used in the constant pressure water supply. In the near future on the implementation of constant pressure water supply system USES the pressure sensor, PLC and inverter as center control unit, achieve the desired function. Transmission and distribution equipment installed on the main pipe network pressure sensor, used to detect pipeline network of water pressure, the pressure can be converted to 4 ~ 20 mA current or is 0 ~ 10 v voltage signal, provided to frequency converter. Inverter is a water pump motor control equipment, can according to the water pressure constant need to the supply of 0 ~ 50 Hz frequency signal for water pump motor, adjust its speed, frequency converter is so powerful that is make up set in advance good parameter set, will be needed to set the number of parameters in use process reduce to a minimum, the choice of parameters of the default in accordance with the application of macro. The application of constant pressure water supply system adopts PID control macro, closed loop control. Frequency converter according to the constant pressure when the corresponding voltage set value and feedback current signal from the pressure sensor, using macro automatically adjust PID control, change the frequency output value to adjust the control of water pump motor speed, to ensure that the pipe network pressure constant. Compared with other water supply constant pressure water supply system, besides has remarkable energy saving effect, has the following obvious advantages: 1, the constant pressure water supply technology by using frequency converter to change motor power frequency, and to adjust the pump rotation speed to change the water pump outlet pressure, than the way to control the water pump outlet pressure regulating valves, can reduce greatly reduce the loss to the intercepting effectiveness in pipelines. 2, due to the variable pump work in the working condition of variable frequency, flow at the exit is less than the rated flow, pump speed to reduce, reduce the wear of the bearing and fever, prolong the service life of the pump and motor mechanical. 3 adopts the way of soft start, water pump motor, according to the set of acceleration time, avoid motor starting current impact, for power grid voltage fluctuations, but also to avoid the sudden acceleration of the motor pump system caused by surge. Eliminate water hammer. 4, to realize automatic constant pressure control, do not need to operating personnel frequent operation, reduce the labor intensity of the workers, save manpower. Pressure measurement with TS100 series pressure transmitter, liquid level transmitter using TS201 liquid level transmitter ( Water level gauge) 。 Automation, dedicated to provide customers with better products and more thoughtful service.