抽凝式汽轮机抽汽逆止阀卡涩故障分析与处理  

Analysis and Treatment of Sticking Failure in Extraction CheckValve of Condensing Steam Turbine

作　　者：卢锦煜 孙斌 王伟康 Lu Jinyu;Sun Bin;Wang Weikang(SINOPEC Shanghai Petrochemical Co.,Ltd.,Shanghai 200540)

机构地区：[1]中国石化上海石油化工股份有限公司,上海200540

出　　处：《石油化工技术与经济》2025年第2期40-43,共4页Technology & Economics in Petrochemicals

摘　　要：某石油化工企业自备电厂的1^(#)汽轮机组减负荷并抽汽出系时,发现汽47抽汽逆止阀不严密,蒸汽有倒流迹象。通过对阀门本体及气动执行机构进行解体检查,确认执行机构配套组件和阀芯连接部件存在重大缺陷。对阀芯连接部件进行焊接、修复与检验检测,阀门静态调试后满足阀芯快速关闭的需求。During load reduction and steam extraction shutdown of the No.1 steam turbine unit in a petrochemical enterprise’s captive power plant,steam backflow was observed due to insufficient tightness of the 47#extraction check valve.Disassembly inspection of the valve body and pneumatic actuator revealed critical defects in both the actuator components and valve disc connection parts.Through welding repair,restoration,and testing of the valve disc connection parts,the valve's rapid closing time requirement was met after static debugging.

关 键 词：抽汽逆止阀 阀芯挂耳 脆性断裂 疲劳破坏 汽轮机 

分 类 号：TM621.3[电气工程—电力系统及自动化]