华东桐柏抽水蓄能电站1号机组球阀密封投退失灵原因分析及处理

The Working Failure Analysis and Treatment of the Sedl of the Inlet Valve in East China Tobai Pumped Storage Power Co.Ltd. Unit 1

桐柏抽水蓄能电站1号机组于2006年5月正式投入运行,运行近9年之久,目前1号机组进水球阀检修密封及工作密封滑动环经常性投退失灵。本文通过分析球阀运行情况、密封结构及原理,进一步剖析导致密封滑动环投退失灵原因,提出相应解决方案,并运用于实际检修工作中。处理后实际运行情况表明对滑动环投退处理是成功的,对同类电站尤其是进水球阀类似问题处理有一定借鉴意义。

East China To Bai Pumped Storage Power Co.Ltd. Unit1 formally put into operation in May 2006, had run for nearly nine years. Currently, the maintenance seal and working seal of the inlet valve in Unit1 always works failure. By analyzing the operation of the inlet valve, the seal structure and the principle, to analyze the reason of working failure. Then we proposed appropriate solutions and applied to practical maintenance work. Several months later, the actual operation after processing proved analysis and treatment is successful. It will certain reference significance for the same kind of power plant, especially for processing similar problems of the inlet valve.