Treatment of the frequent action fault of the emergency steam trap valve in low pressure heater

Huadian Technology ›› 2011, Vol. 33 ›› Issue (3): 52-54.

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Treatment of the frequent action fault of the emergency steam trap valve in low pressure heater

LI Xingmin

Huadian International Zouxian Power Plant, Zoucheng 273522, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-03-25 Published:2011-03-25

Abstract

Abstract: The emergency steam trap valve of low pressure(LP) heater number 8B of unit number 5 in Huadian International Zouxian Power Plant was frequently acted under condition of high load, and this bring unfavorable influence on safety and economical operation of the unit. The reason of the fault was investigated. It is found by the investigation that the spring of regulating valve, which is installed in the normal drain pipe from LP heater number 6 to LP heater number 7A, was broken, and this caused the quantity of drain water in B side of LP heater system is larger than that in A side, and further caused the emergency steam trap valve of LP heater number 8B to act frequently. After the spring and the sealing ring were replaced, the emergency steam trap valve no longer acts frequently.

Key words: low pressure heater, steam trap, pipe line, spring, debugging

LI Xingmin. Treatment of the frequent action fault of the emergency steam trap valve in low pressure heater[J]. Huadian Technology, 2011, 33(3): 52-54.

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Treatment of the frequent action fault of the emergency steam trap valve in low pressure heater

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