某上汽660 MW机组高调门阀杆断裂分析及处理  

Analysis and Treatment of High Profile Valve Stem Fracture of a SAIC 660 MW Unit

作　　者：习超 XI Chao(Zhejiang Zheneng Jiahua Power Generation Co., Ltd,, Jiaxing 314201, China)

机构地区：[1]浙江浙能嘉华发电有限公司,浙江嘉兴314201

出　　处：《节能技术》2022年第1期70-72,80,共4页Energy Conservation Technology

摘　　要：本文介绍了某上汽660 MW机组1号高压调门阀杆断裂异常问题,对断裂阀杆进行了化学成分分析、显微组织分析、力学性能分析和断口扫描电镜分析,并结合高压调门的结构特点和阀杆断裂面的形貌宏观特征,分析了阀杆断裂的原因,并采取了相应的措施,并举一反三进行了排查整改,消除了安全隐患,对今后避免此类问题具有指导作用。an saic was introduced in this article 1 of 660 MW high pressure gate valve rod breaking abnormal problem,on the fracture of the valve stem chemical composition analysis,microstructure analysis,mechanical property analysis,and fracture scanning electron microscopy analysis,and combined with the structure characteristics of the high-pressure tone and stem fracture morphology of the macroscopic characteristics,analyzed the failure of the valve stem,and take the corresponding measures,and checking over the lines,to eliminate the safety hidden trouble,but also provide significant guidance to avoid such problems in the future.

关 键 词：上汽 高压调门 阀杆 断裂 疲劳 张口 金相性能 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]