摘要
介绍了华能德州电厂1号机组低压转子次末级叶片铆钉头断裂的情况,其原因是由于叶片振动、铆钉颈部的应力集中和围带对铆钉颈部产生较大的拉应力所造成的。制定并实施了现场修复措施,从而避免了围带脱落问题的再次出现。
Rupture of a low pressure rotor＇ s, next to the last stage blade＇s rivet head, of Huaneng Dezhou Power Plant＇ s set No. 1, is described. The rupture was found to be caused by blade vibration; stress concentration, at the rivet＇ s neck and the high stress in the rivet, effected by the shroud, were important influeneing factors. Repair measures were fixed on site, with which reoccurence of shroud breack-offs can be avoided.
出处
《发电设备》
2007年第5期367-368,共2页
Power Equipment
关键词
能源与动力工程
汽轮机
叶片
铆钉
断裂
处理
energy and power engineering
steam turbine
blade
rivet
rupture
handling
