650 MW锅炉破坏炉底水封微正压运行分析与研究
陈文卫，李建忠，胡振辉，王猛，杨学毅
（湖北能源集团鄂州发电有限公司，湖北鄂州436032）
摘要： 基于一电厂650 MW 超临界直流锅炉在线破坏炉底水封事故处理的案例，梳理了事故处理过程，分析了该型号
锅炉破坏炉底水封后微正压运行存在的危险点，并提出相应的控制措施，最后归纳出适合在线破坏炉底水封后进行检修
工作的运行方式，为同型号锅炉的相似事故处理提供参考意见。
关键词： 超临界直流锅炉；在线破坏炉底水封；微正压；危险点；控制措施
中图分类号： TK227     文献标识码： A     文章编号： 2095-0802-(2021)11-0111-03
Analysis and Research on 650 MW Boiler Breaking Bottom Water Seal by Micro-positive
Pressure Operation
CHEN Wenwei, LI Jianzhong, HU Zhenhui, WANG Meng, YANG Xueyi
(Ezhou Power Generation Co., Ltd., Hubei Energy Group, Ezhou 436032, Hubei, China)
Abstract: Based on the case of 650 MW supercritical once-through boiler on-line breaking water seal of boiler bottom in a power
plant, this paper sorted out the process of accident treatment, and analyzed the danger points of micro-positive pressure operation
after breaking water seal of boiler bottom, then put forward the corresponding control measures, and finally concluded the
suitable operation mode for on-line maintenance after destroying the water seal at the bottom of the furnace, which provides
references for the similar accident treatments of the same type boiler.

Key words: supercritical once-though boiler; on-line destruction of bottom water seal; micro-positive pressure; danger points;
control measures