Analysis and prevention of tube crack of water wall in 600MW supercritical unit

Huadian Technology ›› 2012, Vol. 34 ›› Issue (2): 13-15.

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Analysis and prevention of tube crack of water wall in 600MW supercritical unit

WENG Jinyu

Fujian Huadian Kemen Power Generation Company Limited, Lianjiang 350512, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-02-25 Published:2012-02-25

Abstract

Abstract:

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.

Key words: spiral type water wall, tube cracking, overtemperature, hurt, reason analysis, preventive measures

WENG Jinyu. Analysis and prevention of tube crack of water wall in 600MW supercritical unit[J]. Huadian Technology, 2012, 34(2): 13-15.

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Analysis and prevention of tube crack of water wall in 600MW supercritical unit

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