Design and Application of Constant Pressure Water Supply System in Hospital
According to the requirements for the stability of water pressure in the hospital,based on the principle of PID electrical control,combined with PLC and frequency converter,this paper designs the hospital constant pressure water supply system.First,select the water supply pump(three-phase asynchronous motor)according to the requirements of the hospital for water pressure.Then,the frequency converter is selected according to the power of the water pump motor.Finally,the main electrical circuit and control system are designed,and the constant pressure water supply is realized by using the PID control function of PLC.The actual test shows that compared with the traditional water supply system,the constant pressure water supply system designed in this subject has more stable water pressure and lower energy consumption,which can meet the requirements of the hospital for constant pressure water supply.
constant pressure water supplyPID controlPLCfrequency converterwater pumpthree-phase asynchronous motor
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