摘要
针对密封环在高温高压工况下的密封可靠性问题,本文采用SolidWorks构建法兰-密封环三维模型,基于Simulation平台开展热固耦合有限元仿真。通过施加400℃稳态温度场及10 MPa、15 MPa两种压力载荷,分析密封环温度分布规律、温差应力演化特征及结构变形趋势,明确温度与压力耦合作用对密封性能的增强机制。结果表明,密封环唇口区域存在温度梯度与应力集中现象,且压力载荷的提升可显著增大密封环与凹槽的接触变形量,15 MPa工况下唇口变形量较10 MPa提升一倍,这验证了密封环“变形增强密封”的自紧机制。本研究为高温高压密封环的结构优化与安全设计提供了参考。
To address the sealing reliability issue of sealing rings under high temperature and high pressure conditions,a three dimensional model of the flange sealing ring was constructed using SolidWorks,and a thermo mechanical coupling finite element simulation was conducted based on the Simulation platform.By applying a steady state temperature field of 400 C and two pressure loads of 10 MPa and 15 MPa,the temperature distribution pattern,temperature difference stress evolution characteristics,and structural deformation trend of the sealing ring were analyzed to clarify the enhancement mechanism of temperature and pressure coupling on sealing performance.The results showed that there were temperature gradients and stress concentration phenomena in the lip area of the sealing ring,and the increase in pressure load significantly increased the contact deformation between the sealing ring and the groove.The deformation amount at the lip under 15 MPa conditions doubled compared to that under 10 MPa conditions,verifying the self tightening mechanism of the sealing ring where'deformation enhances sealing'.This study provides a reference for the structural optimization and safety design of high temperature and high pressure sealing rings.
作者
杜玉思
汤小萍
何世涛
胡秉义
秦香强
张晗
姜鹤
刘平
DU Yu-si;TANG Xiao-ping;HE Shi-tao;HU Bing-yi;QIN Xiang-qiang;ZHANG Han;JIANG He;LIU Ping(Wenzhou Huahai Sealing Co.,Ltd.,Wenzhou 325024,Zhejiang,China;Zhejiang Zhipin Industrial Co.,Ltd.,Wenzhou 325000,Zhejiang,China;Wenzhou Ataike Machinery Technology Co.,Ltd.,Wenzhou 325000,Zhejiang,China)
出处
《阀门》
2026年第1期95-100,共6页
Chinese Journal of Valve
关键词
密封环
温差应力
热固耦合
有限元分析
sealing ring
temperature difference stress
thermo-mechanical coupling
finite element analysis
