Analysis of closing faults of butterfly valves and treatment method

Huadian Technology ›› 2010, Vol. 32 ›› Issue (2): 54-56.

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Analysis of closing faults of butterfly valves and treatment method

LIN Chengfa, SU Yijian

Mindong Hydropower Development Corporation Limited, Ningde 352100, China)

Received:1900-01-01 Revised:1900-01-01 Online:2010-02-25 Published:2010-02-25

Abstract

Abstract: In some hydropower stations in which the butterfly valves are closed by themselves using heavy punch, the butterfly valves often can not closed fully after operating several years. The problem was analyzed, and a reliable automatic closing procedure of butterfly valve was proposed. The procedure can not only ensure normal closing of butterfly valve and provide safety guarantee for operation and overhaul of hydropower station, but also can protect the main shaft and bearing of butterfly valve and lengthen the service time of butterfly valve.

Key words: butterfly valve, closing fault, reason analysis, treatment method

LIN Chengfa;SU Yijian. Analysis of closing faults of butterfly valves and treatment method[J]. Huadian Technology, 2010, 32(2): 54-56.

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Analysis of closing faults of butterfly valves and treatment method

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