某核电汽轮机再热蝶阀的卡涩故障分析  

Blocking Fault Analysis of Reheat Butterfly Valve in A Nuclear Turbine

作　　者：夏明明 Xia Mingming(Dongfang Electric Co., Ltd., Chengdu Sichuan, 611731)

机构地区：[1]东方电气股份有限公司

出　　处：《东方汽轮机》2019年第2期15-18,共4页Dongfang Turbine

摘　　要：文章由一次核电站"跳机"事件入手,逐步分析问题与原因,不仅阐明了"跳机"与再热蝶阀卡涩故障之间的关系,同时也介绍了某种型号再热蝶阀的结构与工作原理,找到了再热蝶阀卡涩故障的根本原因,并最终解决了问题。This paper firstly introduces a nuclear turbine trip accident, and then explains the relationship between the "turbine trip" and "butterfly valve block". Meanwhile, this paper introduces the structure and working principle of a certain type of reheated butterfly valve, and finds out the root reason of valve blocking. Finally, a design improvement has been made to solve the blocking problem.

关 键 词：核电 再热蝶阀 转子轴向位移 阀门卡涩 故障分析 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]