某660 MW塔式锅炉水冷壁角部失效分析及优化  

Analysis and Optimization on Failure of Water Wall Corner in a 660 MW Tower Boiler

作　　者：沙远超 韦红旗[1] 汪超 胡善苗 Sha Yuanchao;Wei Hongqi;Wang Chao;Hu Shanmiao(School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《发电设备》2022年第1期37-41,46,共6页Power Equipment

摘　　要：针对某660 MW塔式锅炉垂直段水冷壁角部频繁发生水冷壁裂纹失效的情况,基于ANSYS Workbench软件,分析了水冷壁角部裂纹产生的原因,并根据失效部位提出优化方案。分析结果表明:水冷壁角部裂纹失效是由于刚性梁角部装置结构设计存在缺陷,造成了应力集中。改进后的刚性梁角部装置能够减少应力集中问题,降低水冷壁角部发生裂纹失效的概率。To solve the problem that the crack failure occurred frequently at the corner of the vertical section water wall in a 660 MW tower boiler, based on ANSYS Workbench software, analyses were conducted on the reason of cracks at the corner of the water wall, and optimization schemes were proposed for the failure. Analysis results show that the crack failure at the corner of the vertical section water wall is caused by the stress concentration, which is resulted from the structure design defect of the rigid beam corner device. With the optimized rigid beam corner device, the stress concentration could be alleviated, and the probability of the crack failure at the corner of the vertical section water wall could be reduced.

关 键 词：塔式锅炉 水冷壁 刚性梁 应力 

分 类 号：TM621.25[电气工程—电力系统及自动化] TK223.31[动力工程及工程热物理—动力机械及工程]