发电厂主蒸汽管道开裂分析  

Analysis on Cracking of Main Stream in Power Plant

作　　者：罗宏建[1] 周重回[1] 郑宏晔[1] 赵州峰[1] 

机构地区：[1]浙江省电力试验研究院,浙江杭州310014

出　　处：《压力容器》2011年第10期52-55,共4页Pressure Vessel Technology

摘　　要：介绍了某机组主蒸汽管道水压试验隔离阀焊口开裂的情况,通过分析指出管道的一次应力过大是导致管道失效的主要原因。说明对高温高压管道进行改造时,必须重视管道应力分析的重要性。The crack in the weld joint between a isolation valve and a main stream pipe was introduced. The analysis results showed that the exceeding primary stress was the key factor of the accident. Finally the importance of stress analysis when reconstruct pipe with high temperature and high pressure was pointed out.

关 键 词：发电厂 主蒸汽管道 开裂 应力分析 一次应力 

分 类 号：TQ055.8[化学工程]