660MW超超临界锅炉大罩塌陷原因分析及改造措施  

Causes Analysis on Collapse of Hood for 660MW Ultra-supercritical Boiler and Reconstruction Measures

作　　者：王准 刘文新 沈利 陈杨 李文华 WANG Zhun;LIU Wen-xin;SHEN Li;无(Zhejiang Energy Technology and Research Co.,Ltd.;Zhejiang Zheneng Electric Power Co.,Ltd.;Zhejiang Zheneng Wenzhou Electric Power Generation Co.,Ltd.)

机构地区：[1]浙江浙能技术研究院有限公司 [2]浙江浙能电力股份有限公司 [3]浙江浙能温州发电有限公司

出　　处：《电站系统工程》2023年第2期42-44,共3页Power System Engineering

摘　　要：针对某电厂660MW超超临界锅炉炉顶大罩塌陷现象,阐述了大罩塌陷现状及内外部检查情况、各区域顶护板取样理化检测及内部温度的监测结果,分析塌陷的主要原因,并通过顶护板改造、密封修复改造及保温治理,确保整体大罩结构的安全性,为其他电厂机组同类事件提供改造经验。Aiming at the collapse of hood of a 660MW ultra-supercritical boiler in a power plant, the current situation of collapse of large hood and inspections on the inside and outside is expounded, the physical and chemical inspection of the roof guard plates in each area, and monitoring results of internal temperature, and analyzes the main reasons for the collapse to ensure the safety of overall hood structure, and to provide experience in transformation of similar incidents of other power plant units.

关 键 词：超超临界锅炉 大罩 塌陷 改造 安全性 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]