电站锅炉喷水减温器泄漏原因分析  

Cause Analysis of Leakage of Water Spray Desuperheater in Utility Boiler

作　　者：杜晓刚 张建树 高义斌 DU Xiaogang;ZHANG Jianshu;GAO Yibin(Electric Power Research Institute of State Grid Shanxi Electric Power Company,Taiyuan,Shanxi 030001,China;Hongguang Power Generation Co.,Ltd.of Shanxi International Energy Group,Lvliang,Shanxi 033000,China)

机构地区：[1]国网山西省电力公司电力科学研究院,山西太原030001 [2]山西国际能源集团宏光发电有限公司,山西吕梁033000

出　　处：《山西电力》2022年第3期43-45,共3页Shanxi Electric Power

摘　　要：某电站再热器微调喷水减温器在运行中发生泄漏,通过无损检测及其分析,发现此次泄漏的根本原因是制造时喷嘴方向装反了引起的一系列变化,最终在筒体内壁产生了热疲劳裂纹,导致减温器泄漏。针对减温器泄漏的原因,提出了相应的防范措施。A fine-tuning water spray desuperheater of the reheater leaks in operation in a power station.Through nondestructive testing and analysis,it is found that the root cause of the leakage is a series of changes caused by the direction of the nozzle being installed in reverse during manufacturing.Finally,thermal fatigue cracks are formed in the inner wall of the cylinder,which leads to the leakage of the desuperheater.Based on the causes of the leakage of the desuperheater,the corresponding preventive measures are put forward.

关 键 词：电站锅炉 喷水减温器 泄漏 裂纹 热疲劳 

分 类 号：TM621[电气工程—电力系统及自动化] TK223.37[动力工程及工程热物理—动力机械及工程]