某锅炉管板裂纹原因分析及研究  

Analysis and Research on the Crack Cause of a Boiler Tube Plate

作　　者：单思凝 蔡刚毅 SHAN Si-ning;CAI Gang-yi(Deqing Senior High School,Huzhou 313200,China;Zhejiang Provincial Special Equipment Inspection And Research Institue,Hangzhou 310020,China)

机构地区：[1]德清县高级中学,湖州313200 [2]浙江省特种设备检验研究院,杭州310020

出　　处：《内燃机与配件》2018年第5期136-138,共3页Internal Combustion Engine & Parts

摘　　要：锅炉检验中发现部分管板连接的烟管有大量裂纹存在。本文通过有限元模拟计算,对锅炉的传热效果进行了分析和研究,从而进一步对缺陷产生管板的结构进行了建模计算,初步确定产生裂纹的原因为管板处制造时的结构不连续在高温作用下造成温差应力集中,导致裂纹的产生。A large number of cracks in the pipes connected by some tube plates were found in the boiler inspection.In this paper,through the finite element simulation,the effect of heat transfer of boiler was analyzed and modeling and calculation was carried out on the structure appearing the defect.It is preliminarily determined that the causes of crack is discontinuous structure in the manufacture of plate tube under high temperature,causing temperature difference stress concentration,which result in cracks.

关 键 词：锅炉 管板 传热 

分 类 号：TK228[动力工程及工程热物理—动力机械及工程]