A mutation on leakage is emerged at a low temperature condition for a mushroom rabbet sealing pair when tested by outside box test method.The related faults and nonrelated faults of the sealing pair were analyzed by Fault tree analysis method.It was found from dew point that the valve leakage in low temperature environment test could be induced by the valve temperature differences due to the wrong testing method.An improved test method was demonstrated to eliminate the cause of a hidden unrelated failure for the valve,it provides a reference for preventing similar fault of related valve products.
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傅乐平,于文凯,杨洋.一种基于露点的阀门非相关故障分析[J].润滑与密封,2016,41(5):126-129. FU Leping, YU Wenkai, YANG Yang. Unrelated Failure Analysis of Valve Leakage Based on Dew Point[J]. Lubrication Engineering,2016,41(5):126-129.