天然气预冷器管板的变形分析  

Deflection Analysis of Tube Sheet of Gas Precooler

作　　者：何金原 唐昕 张玉明 高程 雒定明 魏泳涛[1] He Jinyuan;Tang Xin;Zhang Yuming;Gao Cheng;Luo Dingming;Wei Yongtao(School of Architecture and Environment,Sichuan University,Chengdu 610065,China;Southwest Company,China Petroleum Engineering Co.,Ltd.,Chengdu 610065,China)

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]中国石油集团工程设计有限责任公司西南分公司,成都610065

出　　处：《压力容器》2020年第9期16-23,共8页Pressure Vessel Technology

摘　　要：对于固定管板式天然气预冷器,将外筒对管板的作用简化为弹性支撑上的固支边界,换热管束对管板的支撑等效成文克勒地基,并考虑外筒及换热管在内外压下的轴向变形,基于弹性薄板理论,应用里兹法导出了管板挠度的近似解析解。分别基于名义弹性应力法和弹-塑性分析法,利用ANSYS对不同预冷器数值模拟了多种水压试验工况。对比分析表明,各工况下的管板变形的解析解与有限元结果均吻合良好,验证了所建立的管板挠度解析解的有效性。研究结果可为固定管板式天然气预冷器的设计提供参考。For the fixed tubesheet gas precooler,by simplifying the outer tube as the clamped boundary on an elastic spring and the exchanger tube bundle equivalently as the Winkler foundation and taking into account the axial deformation of the outer tube and the exchanger tube under the internal and external pressure,the approximate analytical solution of the tubesheet deflection was derived by using Ritz method based on the elastic thin theory.Using ANSYS,the numerical simulation of different precoolers under various hydraulic test conditions was carried out by means of the nominal elastic stress analysis and the elastoplastic analysis,respectively.The comparison between the analytical solution and FEM results for tubesheet deflection shows that they are in good agreement for all cases considered,which verifies the validity of analytical solution proposed.The research results can provide great reference for the design of the fixed tubesheet gas precooler.

关 键 词：预冷器 管板变形 有限元分析 文克勒地基 里兹法 

分 类 号：TH49[机械工程—机械制造及自动化] TQ051.5[化学工程]