华电技术 ›› 2011, Vol. 33 ›› Issue (2): 1-3.

• 专题综述 •    下一篇

汽轮机末四级叶片断裂原因分析及处理

段继鹏   

  1. 新疆拜城发电厂,新疆拜城842316
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-02-25 发布日期:2011-02-25

Analysis on fracture reasons of last fourstage blade of steam turbine and treatment

DUAN Jipeng   

  1. Xinjiang Baicheng Power Plant, Baicheng 842316, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-02-25 Published:2011-02-25

摘要: 依据新疆拜城发电厂汽轮机末四级叶片再次发生断裂的事故,分析了叶片断裂原因,介绍了末四级叉形叶根叶片在线更换工艺和具体要求。在线更换叶片后机组运行正常,叶片更换工艺取得了实效。

关键词: 汽轮机, 末四级叶片, 断裂, 在线更换, 工艺

Abstract: The fracture accident of last fourstage blade of the steam turbine in Xinjiang Baicheng Power Plant was occurred again.The reasons of blade fracture were analyzed. The online replacing technology of last fourstage blade with pinned root and concrete requirements were introduced. After the blades were replaced online, the unit operates normally; and the actual effect of the blade replacing technology was obtained.

Key words: steam turbine, last four-stage blade, fracture, online replacement, technology