摘要
管板是换热器内部十分重要的一个承压元件,使用过程中,管板的承压性能直接影响换热器的使用以及安全性能等。以对称与非对称挠性管板为研究对象,利用ANSYS Workbench软件,通过热固耦合分析,首先考察2种模型在正常操作工况下的应力云图,其次通过改变管板厚度、挠性转角半径等因素,考察其对应力分布的影响。结果表明,2种模型应力分布可分为边缘和非边缘2个区域;对于对称挠性管板,厚度的增加对大部分布管区应力强度无大影响,最小总体应力出现在管厚度为64 mm处,在转角半径为35 mm出现最小值;对于非对称管板,厚度的增加对大部分布管区应力强度无大影响,最小总体应力出现在管厚度为54 mm处;随着转角半径的增大,等效应力先减小后增大,在转角半径为30 mm出现最小值。所得结论对换热器的正常运行有一定的参考意义。
The tube plate is a very important pressure bearing component inside the heat exchanger.During use,the pressure bearing performance of the tube plate directly affects the use and safety performance of the heat exchanger.Therefore,the author takes symmetric and asymmetric flexible tube sheets as the research object,uses ANSYS Workbench software,and conducts thermal solid coupling analysis.Firstly,the stress cloud maps of the two models under normal operating conditions are examined.Secondly,the influence of factors such as tube sheet thickness and flexible corner radius on stress distribution is examined by changing them.The results indicate that the stress distribution of the two models can be divided into two regions:edge region and non edge region;For symmetrical flexible tube sheets,the increase in thickness has little effect on the stress intensity in most of the piping areas.The minimum overall stress occurs at a tube thickness of 64 mm and a minimum value at a corner radius of 35 mm;For asymmetric tube sheets,an increase in thickness has little effect on the stress intensity in most of the piping areas,with the minimum overall stress occurring at a tube thickness of 54 mm;As the corner radius increases,the equivalent stress first decreases and then increases,reaching its minimum value at a corner radius of 30 mm.The conclusion drawn has certain reference significance for the normal operation of heat exchangers.
作者
刘欢
张亚宁
董颖
LIU Huan;ZHANG Yaning;DONG Ying(Institute of Architecture and Civil Engineering,Yulin University,Yulin 719000,China)
出处
《化工科技》
2026年第1期19-22,共4页
Science & Technology in Chemical Industry
基金
国家自然科学基金项目(52169006)
陕西省科技创新团队项目(2022TD-08)
陕北榆林地区农村厕所改造与粪污无害化处理技术集成与示范研究项目(2025-CXY-094)
榆林学院科研项目(H2024060290,H2024060291)
榆林学院本科课程建设项目(KC2448)。
关键词
换热管
挠性管板
应力
Heat exchange tube
Flexible pipe plate
Stress
