25 MW汽轮发电机速关阀卡涩原因分析及预防措施

Cause Analysis and Preventive Measures of Fast Close Valve Jamming of 25 MW Turbo Generator

某汽轮机速关阀在计划停机时多次出现无法正常关闭现象,严重影响机组安全。结合速关阀结构特点、工作原理及解体检修情况,对速关阀卡涩原因和处理措施进行了阐述。

The quick closing valve of a steam turbine failed to close normally for many times during a planned shutdown, which seriously affected the safety of the unit. Combining with the structural characteristics, working principle and disassembly maintenance of the quick closing valve, this paper expounds the reasons for the jam of the quick closing valve and treatment measures.