华电技术 ›› 2012, Vol. 34 ›› Issue (2): 13-15.

• 专题综述 • 上一篇    下一篇

600MW超临界机组水冷壁爆管原因分析及预防

翁金钰   

  1. 福建华电可门发电有限公司,福建连江350512
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-02-25 发布日期:2012-02-25

Analysis and prevention of tube crack of water wall in 600MW supercritical unit

WENG Jinyu   

  1. Fujian Huadian Kemen Power Generation Company Limited, Lianjiang 350512, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-25 Published:2012-02-25

摘要:

600MW机组的螺旋水冷壁爆管原因较难查找,主要是因为影响爆管的因素较多,经过螺旋后无法直观判断对应的下集箱出口及上集箱进口位置。通过对爆口管进行金相、化

学、机械性能试验分析,得出超温是水冷壁爆管的主要原因并给出了预防措施,供爆管分析时参考。

关键词: 螺旋水冷壁, 爆管, 超温, 砸伤, 原因分析, 预防措施

Abstract:

Due to that there are many factors influencing on the tube cracking fault, and it can not judge the positions on low header outlet and upper header

outlet corresponding with the spiraled tubes intuitively, it is difficult to find the reason of tube cracking of spiral water wall in a 600MW unit. Based

on the metallographic analysis, the chemical analysis and the mechanical test of the cracked tube, it was found that the main reason of the water wall tube

cracking is overtemperature, and the preventive measures were given, which provides certain reference for tube cracking analysis.

Key words: spiral type water wall, tube cracking, overtemperature, hurt, reason analysis, preventive measures