关键词: 关键词：挂闸, 分析, 故障原因, 处理, 电磁阀

Abstract:

Abstract:Combining with the latch principle by the control and protection system and the structure features of the emergency stop slide valve, the reason of the fail of remote turbine latch operation was analyzed. As a temporary treatment scheme, the oil input restriction orifice of the latch solenoid valve had been replaced, and the fault was eliminated. It was ensured that the unit commissioning can go on successfully before the problem had been solved thoroughly,will lapping face and seal surface，which is waiting for some necessary conditions.

Key words: Key words:latch, analysis, fault reason, treatment, solenoid valve