Fault Analysis and Treatment of Dorot Valve in Pressure Reducing Mode
The Dorot valve used in the technical water supply system of the Phase I project of Yantan Hydropower Station has been upgraded with adjustable pressure reduction.The related pressure reducing pilot valve,control solenoid valve,hydraulic relay and other modules have been successively abnormal and faulty,resulting in frequent loss of control of the Dorot valve.The author counted the abnormalities and faults of the Dorot valve in the pressure reducing mode,analyzed the causes,and proposed corresponding treatment measures.The results show that the main manifestations of the faults are seal damage and water leakage,PLC program faults,pipe joint cracks and water seepage,as well as failure of pressure reducing pilot valves,solenoid valves,and hydraulic relays;By taking measures such as replacing vulnerable parts and easily clogged valves,and replacing suitable filters,the safety hazards of Dorot valves losing control in adjustable pressure reducing mode are ultimately eliminated.This research result can provide reference for valve failure treatment in water supply systems similar to hydropower station technology.
technical water supply systemDorot valvepressure reducing modefault
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