换热管的布管对挠性薄管板应力场影响的有限元分析  

FINITE ELEMENT ANALYSIS ON THE INFLUENCE OF TUBE LAYOUT ON THE STRESS FIELD OF FLEXIBLE THIN TUBE SHEET

作　　者：叶增荣 Ye Zengrong(Nanjing Jinling Petrochemical Engineering Co.,LTD,Nanjing,Jiangsu,210042)

机构地区：[1]南京金凌石化工程设计有限公司,江苏南京210042

出　　处：《石油化工设备技术》2024年第1期35-42,48,I0003,共10页Petrochemical Equipment Technology

摘　　要：换热管的布管是影响挠性薄管板挠性的最重要也是最容易被忽视的因素之一,换热管布管的合理与否直接决定挠性薄管板的使用寿命。文章对某余热锅炉中的挠性薄管板分别建立不同的有限元分析模型进行多工况模拟,得出管板的各类应力水平及应力分布规律。针对换热管布管的主要参数(换热管排列形式、换热管中心距、布管限定圆直径)给出了各因素对挠性薄管板应力强度的影响规律。分析结果表明:合理地优化换热管的布管可以有效改善挠性薄管板的受力状态,对挠性薄管板的工程设计具有一定的指导意义。The tube layout is one of the most important and most easily overlooked factors affecting the flexibility of the flexible thin tube sheet.The rationality of the tube layout directly determines the service life of the flexible thin tube sheet.Different finite element analysis models were established for the flexible thin tube sheet in a waste heat boiler and were analyzed under multiple working conditions to obtain various stress levels and stress distribution of the flexible thin tube sheet.According to the main parameters of the tube layout including the tube pattern,the tube pitch and the limit circle diameter of tube layout,the influence rules of various factors on the stress intensity of flexible thin tube sheet were obtained.The analysis results show that the stress level of flexible thin tube sheet can be effectively improved by optimizing the tube layout reasonably.The results are instructive for the engineering design of flexible thin tube sheet.

关 键 词：余热锅炉 挠性薄管板 布管 应力场 

分 类 号：TB115[理学—数学] TK229.929[理学—应用数学]