Cause analysis of boiler water wall burst

Abstract

Abstract:

Abstract:The author adopted macroscopic test,spectral analysis,mechanical property test,metallographic examination and other methods,and analyzed the cause reasons of a power plant’s boiler water wall burst. Based on macroscopic test,we can find the trace of long-term and short term overheat at the burst hole area. And there are intensive parallel transverse crack at the fire face.Based on metallographic examination,the
transverse crack at fire face are thermal fatigue crack,the burst is caused by the aggravation of these thermal fatigue crack.The author suggested to find out what caused water wall thermal fatigue,and to replace those water wall pipe with thermal fatigue crack.

Key words: ">Keywords:">fire power plant">；">boiler">；">water wall">；">burst">；">thermal fatigue">；">crack

JIA Shaowei. Cause analysis of boiler water wall burst[J]. Huadian Technology, 2015, 37(12): 41-43.

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Cause analysis of boiler water wall burst

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