Analysis on reason of hydrogen leakage in end cover flange of generator hydrogen cooler

Abstract

Abstract: Abstract:The hydrogen leakage fault in the hydrogen cooler end flange of the 600MW hydrogencooled generator in a power plant occurred repeatedly, which caused the compelled emergency shutdown of the unit. It was determined by analysis that the reason of the hydrogen leakage fault is breakage of the sealing gasket. The measures, such as to optimize the operating standard, to replace the cooling water tube of the hydrogen cooler by stainless steel flexible pipe, to improve the support of the inlet/outlet cooling water pipes of the generator hydrogen cooler and so on, were adopted, and the hydrogen leakage fault of the generator hydrogen cooler end flange was eliminated.

Key words: Keywords:generator, hydrogen cooler, end cover flange, cooling water pipe, vibration, hydrogen leakage, stainless steel flexible pipe

SUI Luyi. Analysis on reason of hydrogen leakage in end cover flange of generator hydrogen cooler[J]. Huadian Technology, 2014, 36(3): 40-40.

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Analysis on reason of hydrogen leakage in end cover flange of generator hydrogen cooler

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