A system and method for automatically controlling the start-up process of a screw refrigeration compressor
A technology of refrigeration compressor and startup process, applied in the direction of machine/engine, etc., can solve the problems of motor stall, compressor overload, overcurrent shutdown, etc., to improve work efficiency, enhance reliability, and high economy. Effect
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] Such as figure 1 As shown, an automatic control system for the start-up process of a screw refrigeration compressor includes a screw compressor unit system and a control system. The screw compressor unit system mainly includes a screw refrigeration compressor 1, a throttle valve 4, a frequency converter 3, and a motor 2 , the control system includes a pressure sensor 5 and a controller 6. In the screw compressor unit system, the frequency converter 3 is installed on the motor 2, the motor 2 is connected to the screw refrigeration compressor 1, and the throttle valve 4 is installed on the suction pipeline of the screw refrigeration compressor 1. In the control system, the pressure sensor 5 is installed on the suction pipeline between the throttle valve 4 and the screw refrigeration compressor 1, and the controller 6 is connected with the pressure senso...
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