超临界锅炉水冷壁壁厚减薄原因分析及预防  

Cause Analysis and Preventive Measures of Supercritical Boiler Spiral Water Wall Thinning

作　　者：关鑫源 姚学会 李鑫杰 白立佳 GUAN Xinyuan;YAO Xuehui;LI Xinjie;BAI Lijia(Ningxia Jingneng Ningdong Electric Power Co.,Ltd.,Yinchuan 750400.China)

机构地区：[1]宁夏京能宁东发电有限责任公司,宁夏银川750400

出　　处：《锅炉技术》2021年第6期48-54,共7页Boiler Technology

摘　　要：通过对2号锅炉水冷壁壁厚减薄管样宏观形貌检查和几何尺寸测量、基体能谱成分分析、金相检验、维氏硬度试验、向火侧外壁垢样等试验综合分析,得出了2号锅炉水冷壁管壁厚减薄的具体原因,针对分析结果提出了预防措施。Based on the analysis of the macro-morphology inspection and geometric dimension measurement of the water-cooled wall thickness thin-walled boiler tubes,the composition analysis of the matrix energy spectrum,metallographic examination.Vickers hardness test.The specific reason of the wall thickness reduction of the water wall tube of boiler No.2 was put forward,and the preventive measures were put forward according to the analysis result.

关 键 词：水冷壁 壁厚减薄 硫化物 高温腐蚀 还原性气氛 

分 类 号：TK223.31[动力工程及工程热物理—动力机械及工程]