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。
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.
出处
《华电技术》
CAS
2012年第2期13-15,21,共4页
HUADIAN TECHNOLOGY
关键词
螺旋水冷壁
爆管
超温
砸伤
原因分析
预防措施
spiral type water wall
tube cracking
overtemperature
hurt
reason analysis
preventive measures
