垃圾焚烧炉水冷壁集箱手孔端盖泄漏原因分析  

Handhole Cover Leakage Analysis for Water Wall Header of Waste Incinerator

作　　者：李宪爽 高成龙 程义[1,2] 刘新星 Li Xianshuang;Gao Chenglong;Cheng Yi;Liu Xinxing(Harbin Boiler Co.,Ltd.,Harbin 150046,China;State Key Laboratory of Efficient and Clean Coal-fired Utility Boilers,Harbin 150046,China)

机构地区：[1]哈尔滨锅炉厂有限责任公司,哈尔滨150046 [2]高效清洁燃煤电站锅炉国家重点实验室,哈尔滨150046

出　　处：《发电设备》2022年第4期245-248,共4页Power Equipment

摘　　要：通过宏观检查、几何尺寸测量、化学成分分析、力学性能检测、金相组织分析、扫描电镜及能谱分析等方法,对某电厂垃圾焚烧炉水冷壁集箱手孔端盖泄漏原因进行分析。结果表明:该水冷壁集箱存在过热运行;端盖外表面发生高温硫腐蚀;端盖迎风侧发生冲刷腐蚀。高温与腐蚀的共同作用,导致端盖壁厚严重减薄,在其内壁工质压力的作用下发生开裂泄漏。The leakage reasons of the water wall header handhole cover of waste incinerator in a power plant were analyzed by means of macroscopic inspection,geometric dimension measurement,chemical composition analysis,mechanical property detection,metallographic analysis,scanning electron microscopy and energy spectrum analysis,etc.The results show that overheating operation exists in the water wall header,high temperature sulfur corrosion occurs on the outer surface of the cover,and erosion corrosion occurs on the windward side of the cover.The joint action of high temperature and corrosion leads to the serious thinning of the wall thickness of the cover,and cracking and leakage occur under the pressure of the inner wall working medium.

关 键 词：垃圾焚烧炉 水冷壁集箱 过热 高温硫腐蚀 冲刷腐蚀 

分 类 号：TK225[动力工程及工程热物理—动力机械及工程]