基于ANSYS的凹凸管法兰系统密封性能研究  

Study on Sealing Performance of Convex and Convex Pipe Flange System Based on ANSYS

作　　者：刘健 闫振汉 陈庆[1] LIU Jian;YAN Zhenhan;CHEN Qing(􀆰School of Mechanical and Electrical Engineering,Jilin Institute of Chemical Technology,Jilin of Jilin Province 132022,China;􀆰College of Mechanical and Automotive Technology,Jilin Vocational College of Industry and Technology,Jilin of Jilin Province 132013,China)

机构地区：[1]吉林化工学院机电工程学院,吉林吉林132022 [2]吉林工业职业技术学院机械与汽车技术学院,吉林吉林132013

出　　处：《润滑与密封》2021年第6期109-113,135,共6页Lubrication Engineering

基　　金：吉林工业职业技术学院2020年院级项目(20jy31)。

摘　　要：运用ANSYS有限元分析软件,建立凹凸管法兰系统的热-结构数值模型,对系统内各组件的应力与温度对系统密封性的影响规律进行分析。结果表明:法兰管道与螺栓外侧法兰外缘所受应力相对较小,螺栓内侧法兰所受应力相对较大;在预紧、预紧+内压、预紧+内压+温度3种工况下垫片的径向应力过渡方式均为由大变小再变大的变化趋势,且在预紧工况下垫片的压应力最大;自螺栓底面至顶面螺栓轴向应力呈逐渐增大再减小的变化趋势。The finite element analysis software ANSYS was used to establish the thermal structural numerical model of the concave convex pipe flange system,and the influence of the stress and temperature of each component in the system on the sealing performance of the system was analyzes.The results show that the stress of flange pipe and outer flange of bolt is relatively small,and the stress of inner flange of bolt is relatively large.Under the three conditions,pre-tightening,pre-tightening with internal pressure,and pre-tightening with internal pressure and temperature,the radial stress transition mode of gasket changes from large to small and then to large,and the pressure stress of gasket under the pre-tightening condition is the largest.The change trend of bolt axial stress is gradually increased and then decreased from bottom to top of the bolt.

关 键 词：凹凸管法兰系统 密封 热-结构耦合 垫片 

分 类 号：TH136[机械工程—机械制造及自动化]