Variable-frequency speed regulation constant-pressure water supply control system

Abstract

The invention discloses a variable-frequency speed regulation constant-pressure water supply control system. The system comprises an industrial personal computer, a PLC controller, a frequency converter, a water pump valve main circuit, a sensing module, a first water pump motor and a second water pump motor, wherein the industrial personal computer is connected with the PLC controller, the PLC controller is correspondingly connected with the frequency converter, the sensing module and the water pump valve main circuit, and the frequency converter is connected with the first water pump motor and the second water pump motor through a water pump switching circuit; and the frequency converter feeds back the motor frequency signal to the PLC controller, the sensing module samples the pipe network pressure signal to be fed back to the PLC controller, and the PID module in the PLC controller calculates according to the motor frequency signal and the pipe network pressure signal and sends outa control signal to control the operation state of the first water pump motor and the second water pump motor. According to the system, the rotating speed of the water pump motor and the input and exit of the multiple motors are automatically adjusted, the pressure of the pipe network is kept at a constant pressure set value, accidents are effectively prevented from being overlarge, and energy issaved.

Description

technical field [0001] The invention relates to the field of water supply control, and more specifically, to a frequency-variable-speed-regulation constant-pressure water supply control system. Background technique [0002] As we all know, water is an indispensable and important part of production and life. Under the historical conditions that water saving and energy saving have become a symbol of this era, our country, which is relatively short of water resources and electric energy, has long been used in urban water supply, community water supply, The technology of high-rise water supply and other aspects has always been relatively backward, and the degree of automation is relatively low. The main aspect is that due to the constraints of outdated water supply equipment and pipelines, the water supply is often lower than the demand during the peak water consumption period, and the water pressure drops and the water supply exceeds the demand. The traditional solution is to ...

AI Technical Summary

Problems solved by technology

This kind of water supply method relying on the potential energy or air pressure of water generally occupies a large area, requires a large investment, frequently starts the pump motor, consumes a lot of power, the water pressure of the pipe network is unstable, the phenomenon of pipe bursting is frequent, and the water leakage is very serious.

At the same time, the domestic water is also easily polluted, and the frequent operation of the pump motor is likely to cause frequent failures of the equipment, and it is also difficult to repair and maintain.

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