Analysis of governor valve jam fault in DEH system and countermeasures

Huadian Technology ›› 2009, Vol. 31 ›› Issue (8): 36-40.

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Analysis of governor valve jam fault in DEH system and countermeasures

ZHANG Yanjun

Xinjiang Huadian Hongyanchi Power Generation Corporation Limited, Urumqi 830047, China

Received:1900-01-01 Revised:1900-01-01 Online:2009-08-25 Published:2009-08-25

Abstract

Abstract: The structure and operation principle of the digital electric hydraulic control system (DEH) for steam turbine were introduced. Aiming at the governor valve jam problem of DEH system in 200MW unit of Xinjiang Huadian Hongyanchi Power Generation Corporation Limited, some problems needing attention in overhaul of automatic main steam valve, high pressure and medium pressure governor valves were pointed out, and the measures to prevent jam fault were given.

Key words: digital electric hydraulic control system, valve, jam, movability test

ZHANG Yanjun. Analysis of governor valve jam fault in DEH system and countermeasures[J]. Huadian Technology, 2009, 31(8): 36-40.

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Analysis of governor valve jam fault in DEH system and countermeasures

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