具有圆度误差的径向金属密封接触应力研究  

Study on the Contact Stress of the Radial Metal Seal with Roundness Error

作　　者：杨仪伟[1,2] 何光杰 何东升 庄雯劼[3] 郑严 YANG Yiwei;HE Guangjie;HE Dongsheng;ZHUANG Wenjie;ZHENG Yan(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China;Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan Province,Chengdu Sichuan 610500,China;Sichuan Boneng Gas Co.,Ltd.,Chengdu Sichuan 610399,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]石油天然气装备技术四川省科技资源共享平台,四川成都610500 [3]四川博能燃气股份有限公司,四川成都610399

出　　处：《润滑与密封》2024年第5期102-111,共10页Lubrication Engineering

基　　金：“十三五”国家科技重大专项(2016ZX05028001-006)。

摘　　要：由于加工圆度误差的影响,井下流量控制阀径向金属密封接触应力分布不均匀,从而影响密封性能。利用有限元方法研究具有圆度误差的径向金属密封唇部接触应力分布,并分析圆度误差对径向金属密封接触应力的影响;基于有限元分析结果提出径向金属密封接触应力分布的理论解析式,并进行误差分析。具有圆度误差的径向金属密封唇部接触应力分布的理论解与数值解相符,各参数引起的最大接触应力的平均相对误差约为10%。根据具有圆度误差的径向金属密封副接触应力的分布规律,提出合理的过盈量函数,修正了径向金属密封轴对称结构的悬臂梁模型的接触应力理论关系式,得出了圆度误差下的径向金属密封接触应力分布规律。研究结果为井下流量控制阀径向金属密封的设计提供了理论指导。Due to the influence of machining roundness error,the contact stress distribution of the radial metal seal for the interval control valve is uneven.The contact stress distribution of the radial metal seal with roundness error was studied by finite element method,and the influence of roundness error on the contact stress of radial metal seals was analyzed.Based on the finite element analysis results,the theoretical analytical formula of contact stress distribution of radial metal seal was proposed,and the error was analyzed.The theoretical solution and numerical solution of the contact stress distribu-tion on the radial metal seal lip with roundness error are consistent,and the average relative error of the maximum contact stress caused by each parameter is about 10%.A reasonable interference function based on the distribution law of contact stress in radial metal sealing pairs with roundness error was proposed,the theoretical relationship formula of contact stress in the cantilever beam model of radial metal sealing axisymmetric structure was corrected,and the distribution law of con-tact stress in radial metal sealing under roundness error was obtained.This research provides the theoretical guidance for the design of radial metal seal for the interval flow control valve.

关 键 词：径向金属密封 金属密封圈 圆度误差 接触应力 流量控制阀 

分 类 号：TB42[一般工业技术]