600MW超临界W火焰锅炉前墙上炉膛水冷壁撕裂原因分析及处理  

Cause Analysis and Treatment of Crack Failures on Upper Part of Front Wall in a 600 MW Supercritical W-flame Boiler

作　　者：唐道建 谢志文 刘瑞东 熊显巍[2] 李玉鹏 杨太勇 黄允修 

机构地区：[1]四川中电福溪电力开发有限公司,四川宜宾645152 [2]上海发电设备成套设计研究院,上海200240

出　　处：《动力工程学报》2015年第12期949-955,共7页Journal of Chinese Society of Power Engineering

摘　　要：针对某超临界W火焰锅炉投产初期出现的前墙上炉膛水冷壁变形撕裂问题,分析了现场实测汽温数据,进行了炉内数值模拟计算和水动力校核计算,得出汽温偏差过大的原因.结果表明:各管出口汽温偏差太大导致上炉膛水冷壁的变形撕裂;通过运行调整、检修和技术改造,水冷壁的变形撕裂问题得到解决,满足了锅炉安全稳定运行的需要.To handle the crack failure occurring on upper part of front wall in early operation of a supercritical W-flame boiler,an analysis was performed based on onsite measurements of the steam temperature,while in-furnace simulation calculation and hydrodynamic check calculation were conducted,after which the failure was found to be caused by large deviation of steam temperatures.Results show that the too large deviation of steam temperatures leads to the deformation and cracking of front water wall in the upper furnace.The problem has finally been tackled through operation adjustment,overhaul and technical retrofit,thus obtaining safe and stable operation of the boiler.

关 键 词：超临界W火焰锅炉 水冷壁 撕裂 水动力计算 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]