Application of New Type Electromagnetic Speed ​​Regulating Motor in Constant Pressure Water Supply

Apply a new type of high-efficiency slip motor (ordinary squirrel-cage asynchronous motor is connected to a new high-efficiency electromagnetic speed-adjusting clutch through a coupling) to drive the water pump, detect the pressure of the water pipe network through the pressure sensor, and then use the intelligent PID regulator to measure the actual value ( After analyzing, comparing, and computing the setpoint value (SV), the output signal is sent to the excitation current controller of the speed-regulating motor to control the speed of the slip-variable clutch (while the pump shaft speed is also on the same coupling) Get the same speed adjustment), in order to achieve the control requirements to ensure a constant pressure in the pipe network. Therefore, the system can adjust the speed of the pump in time according to the change of the user's water consumption on the pipe network so as to achieve constant pressure and variable flow of water supply, and it can also achieve greater energy saving and water saving. In the system where the demand for water in the pipe network is not balanced in 24 hours, the energy saving rate can generally reach 10% to 40% (compared with the case of non-adjusting speed), saving more than 5% of water (after constant pressure, the pressure can be further reduced. When the leakage of the pipe network and the water pressure at the user's water tap are too high, the waste of the shutdown is not timely, the vicious burst rate of the pipe network can be further reduced, and the repair expenses of the pipe network can be reduced. Therefore, the application of the system can achieve more. Comprehensive social and economic benefits.