Analysis on reason causing mediumpressure regulating valve to close off incorrectly by itself

Huadian Technology ›› 2013, Vol. 35 ›› Issue (5): 29-32.

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Analysis on reason causing mediumpressure regulating valve to close off incorrectly by itself

DAI Xihui

(Guangdong Red Bay Power Generation Company Limited, Shanwei 516600, China)

Received:1900-01-01 Revised:1900-01-01 Online:2013-05-25 Published:2013-05-25

Abstract

Abstract: In test of valve movability of steam turbine DEH control system, after the mediumpressure regulating valve had been opened, the valve closed off incorrectly by itself. The reason of the fault was analyzed. It was found by inspection that the logic of the test of valve movability of steam turbine DEH control system is irrational. The logic optimization scheme was proposed, which makes the logic of the valve movability test for the steam turbine DEH system to be more rigorous.

Key words: steam turbine digital electro-hydraulic control system (DEH), test of valve movability, medium-pressure regulating valve, fault, reason analysis, logic optimization

DAI Xihui. Analysis on reason causing mediumpressure regulating valve to close off incorrectly by itself[J]. Huadian Technology, 2013, 35(5): 29-32.

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Analysis on reason causing mediumpressure regulating valve to close off incorrectly by itself

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