超高压锅炉低温再热器爆管原因浅析
Leakage Analysis of Low Temperature Reheater Tube in a Super High Pressure Boiler
摘 要
DG-670/140-8型超高压锅炉低温再热器发生大面积爆管.根据爆管再热器内表面腐蚀形貌、腐蚀特征和腐蚀产物的试验分析结果,推断氧腐蚀是引起爆管的根本原因,不纯物质的带入和停运等促进了氧腐蚀.提出了对凝汽器查漏封堵,加强水质监督、减少汽水携带、加强停炉保护、管材升级等防范措施.
爆管
氧腐蚀
锅炉
low temperature reheater
tube leakage
oxygen corrosion
boiler
Abstract
Severe pitting corrosion and tube leakage took place at the internal surface of low temperature reheater of a DG-670/140-8 super high-pressure boiler.The analytical results of corrosion morphology,corrosion characteristics and corrosion products analyses showed that the oxygen corrosion was the main reason for the tube leakage.The factors of impurity and running stop could accelerate the oxygen corrosion.The improving measures were also proposed.
中图分类号 TG172.8 TK228
所属栏目 失效分析
基金项目
收稿日期 2009/10/15
修改稿日期 2009/12/31
网络出版日期
作者单位点击查看
联系人作者冯斌(fb8913@163.com)
引用该论文: YUAN Xin-min,FENG Bin. Leakage Analysis of Low Temperature Reheater Tube in a Super High Pressure Boiler[J]. Corrosion & Protection, 2010, 31(8): 659～661
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】肖作善.热力设备水汽理化过程[M].北京:水利电力出版社,1987.
【2】于贵君,郑福民.再热器管泄漏原因分析[J].腐蚀科学与防护技术,2008,20(3):224-226.
【2】于贵君,郑福民.再热器管泄漏原因分析[J].腐蚀科学与防护技术,2008,20(3):224-226.
相关信息
