核级管壳式换热器密封垫片非线性分析研究  

Nonlinear Analysis of the Sealing Gasket of Nuclear Shell-to-Tube Heat Exchanger

作　　者：杜坤 李彦青 朱昊杰 王晓峰 洪昌 李振华 陆永浩 DU Kun;LI Yan-qing;ZHU Hao-jie;WANG Xiao-feng;HONG Chang;LI Zhen-hua;LU Yong-hao(Stale Key Laboratory of Nuclear Pover Safety Technology and Equipment;China Nuclear Power Engineering Co.,Ltd.;National Center for Material Serrice Safety,University of Science and Technology Beijing)

机构地区：[1]核电安全技术与装备全国重点实验室 [2]中广核工程有限公司 [3]北京科技大学国家材料服役安全科学中心

出　　处：《化工机械》2024年第4期565-570,共6页Chemical Engineering & Machinery

基　　金：重大工程材料服役安全研究评价设施国家重大科技基础设施开放课题基金(批准号:MSAF-2020-103)资助的课题。

摘　　要：采用有限元分析方法对核级管壳式换热器法兰螺栓连接结构的密封性能进行了研究。考虑垫片的非线性材料特性,应用ANSYS建立了有限元参数化模型,通过非线性分析提取密封垫片上的压应力,与垫片密封比压和垫片系数比较,直观地验证结构的密封可靠性。对影响垫片密封性能的垫片位置和垫片宽度等参数进行了敏感性研究,垫片位置趋于密封面内侧、垫片宽度减小,密封性能越好。Making use of finite element analysis method to investigate sealing performance of the nuclear shell-tube heat exchanger's flange-bolt-joint was implemented,including having the gasket's nonlinear material characteristics considered and ANSYS adopted to establish a parameterized finite element model.Through nonlinear analysis,the sealing gasket's compressive stress was extracted and the sealing reliability of the structure was verified after comparing the compressive stress with the sealing pressure ratio and gasket coefficient.The sensitivity factors of gasket position and gasket width which affecting the sealing performance were studied.The results show that,the sealing performance becomes better while the position of the gasket tends to the inside of the sealing surface.The width of the gasket decreases and the sealing performance becomes better.

关 键 词：管壳式换热器 密封垫片 密封性能 非线性分析 有限元 

分 类 号：TQ051.5[化学工程]