摘要
黄埔发电厂5号炉低温再热器穿炉顶管处采用高冠状密封结构,运行中出现因密封焊缝裂纹而导致爆管事故。分析了产生裂纹的原因,并对密封结构进行了改进,消除了引发裂纹的根本因素。
High hat like sealing structures are adopted for the low-temperature reheater roof-passing tubes of boiler No. 5 in Huangpu Power Plant. Tube burst failures resulted from weld cracks were encountered during operation in related sealing areas, where necessary retrofit was taken for completely eliminating the cracking causes.
出处
《发电设备》
2008年第2期143-144,共2页
Power Equipment
关键词
能源与动力工程
锅炉
低温再热器
冠状密封
焊接裂纹
结构改进
energy and power engineering
boiler
low-temperature reheater
hat like sealing at roof-passingarea
welding crack
structural retrofit
