卧式内燃热水锅炉后管板发生裂纹的机理  

Horizontal Internal Combustion Hot Water Boiler Back Tube Plate Crack Mechanism

作　　者：王迪[1] 

机构地区：[1]上海市特种设备监督检验技术研究院,上海200333

出　　处：《锅炉制造》2014年第4期49-51,共3页Boiler Manufacturing

摘　　要：卧式内燃热水锅在高温烟气入口区域的后管板处容易产生过冷沸腾、后管板超温和漏水现象,严重影响着锅炉的运行。本文首先对后管板内外壁的工作情况进行分析,然后从:温差应力、锅炉水循环不良造成的过冷沸腾、后管板内壁结垢、后管板处热负荷高以及管孔和管板的制造工艺这几个方面发生裂纹的机理进行分析。Horizontal internal combustion hot water boiler tube plate after high temperature flue gas inlet area prone to subcooled boiling,tube plate after ultra gentle leakage phenomenon,the serious influence the operation of the boiler. This paper on the interior and exterior wall of the tube plate after work is analyzed,and then from： the temperature stress caused by poor,boiler water circulation subcooled boiling,after scaling the inner wall of tube plate tube plate in heat load and hole tube and tube plate manufacturing process of these aspects analyzes the mechanism of crack.

关 键 词：后管板 裂纹 内燃热水锅 

分 类 号：TK229.8[动力工程及工程热物理—动力机械及工程]