不同工况下换热器管板的应力分析  

Stress analysis of heat exchanger tube sheets under different operating conditions

作　　者：王战辉[1] 李东泽 王爱民[1] 陈锦中 常体鹏 张智芳[1,3] 张玉杰 WANG Zhanhui;LI Dongze;WANG Aimin;CHEN Jinzhong;CHANG Tipeng;ZHANG Zhifang;ZHANG Yujie(School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,China;Yulin Geotechnical Construction Engineering Co.Ltd.,Yulin 719000,China;High Value Utilization of Coal to Semi Coke Derived Liquid at Shaanxi Provincial University Engineering Research Center,Yulin 719000,China;Xi′an Vocational and Technical College,Xi′an 710000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]榆林市岩土建筑工程有限责任公司,陕西榆林719000 [3]煤制半焦衍生液高值利用陕西省高校工程研究中心,陕西榆林719000 [4]西安职业技术学院,陕西西安710000

出　　处：《化工科技》2025年第1期1-6,共6页Science & Technology in Chemical Industry

基　　金：国家自然科学基金项目(21763030);陕西省科技创新团队项目(2023-CX-TD-39);陕西省教育厅项目(1506-21JK1015);榆林市青年人才托举计划项目(20220430,20220429);陕西省科协青年人才托举计划项目(20230504);榆林市科技计划项目(CXY-2021-104-01);榆林学院横向项目(H2023060373,H2023060418)。

摘　　要：运用ANSYS有限元分析软件,建立对称和非对称2种管板三维有限元模型,首先对2种模型7种不同工况进行应力分析,其次选取6条危险路径进行应力线性化处理和安全评定。结果表明,2种模型工况3、5、6、7由于有温度载荷的存在,应力急剧增大,属于危险工况;不对称模型管板与壳体连接处的最大应力出现在工况3;开车的时候,在工艺条件允许的情况下应该先开压力较低一侧的阀门;停车的时候,在工艺条件允许的情况下应该先关闭压力较高一侧的阀门;6条路径下2种模型7种操作工况全部应力评定安全。所得结论对于管板材料的选取和提高换热器的安全性和经济性具有参考意义。Using ANSYS finite element analysis software,two types of three-dimensional finite element models of symmetrical and asymmetrical tube sheets were established.Firstly,stress analysis was conducted on seven different working conditions of the two models.Secondly,six dangerous paths were selected for stress linearization and safety assessment.The results show that the two model operating conditions 3,5,6,and 7 have a sharp increase in stress due to the presence of temperature loads,which belong to dangerous operating conditions;The maximum stress at the connection between the asymmetric model tube plate and the shell occurs in operating condition 3;When startup,if the process conditions permit,the valve on the side with lower pressure should be opened first;When shutdown,if the process conditions permit,the valve on the side with higher pressure should be closed first;Under 6 paths,2 models and 7 operating conditions were evaluated for stress safety.The conclusions drawn have reference significance for the selection of tube sheet materials and the improvement of the safety and economy of heat exchangers.

关 键 词：管板 ANSYS 应力分析 

分 类 号：TB21[一般工业技术—工程设计测绘]