350 MW汽轮机高压调节阀阀杆连接失效问题分析及处理  

Failure Analysis and Treatment of HP Control Valve Stem Connection on 350MW Steam Turbine

作　　者：赵海军 李纯红 刘玉强 严菲 李长青[1] ZHAO Hai-jun;LI Chun-hong;LIU Yu-qiang(Dong Fang Steam Turbine Co.,Ltd.;CPHI)

机构地区：[1]东方汽轮机有限公司,四川德阳618000 [2]哈尔滨电站设备成套设计研究所有限公司

出　　处：《电站系统工程》2025年第2期47-49,共3页Power System Engineering

摘　　要：对某电厂#1机高压调节阀阀杆与执行机构锥套连接结构及其失效原因进行了分析。通过拆高压调节阀执行机构进行检查,最终确认原因为阀杆锥套未压紧、顶部圆螺母未拧紧或未锁紧。The structure and failure cause of high pressure control valve stem connection that is connected to valve actuator with a cone sleeve in #1 Unit of one power plant is analyzed.The actuator of the high pressure control valve is disassembled for inspection,and the cause is finally confirmed as the valve stem cone sleeve is not compressed,and the top round nut is not tightened or not locked.

关 键 词：汽轮机 高压调节阀 锥套连接 失效 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]