焊管2024，Vol.47Issue(11)：18-25,33,9.DOI:10.19291/j.cnki.1001-3938.2024.11.003
温度及轴向载荷对油管接头力学特性影响研究
Study on Influence of Temperature and Axial Load on Mechanical Characteristics of Tubing Joints
摘要
Abstract
In order to study the influence of temperature and axial load on the mechanical properties of tubing joints,a 3-1/2 in(88.9 mm)three-dimensional structure model and finite element simulation model of tubing joints were created for S13Cr tubing joints,and the influence of different temperatures and different axial loads on the connection strength and sealing performance of tubing joints were analyzed,as well as the stress characteristics.The results indicate that as the temperature increases,there is a corresponding increase in the overall maximum equivalent stress of the tubing joint,along with a noticeable increase in thread stress.Additionally,an increase in tensile load leads to a partial offset of preload and the equivalent stress and contact pressure show a decreasing trend.As the axial compressive load increases,the equivalent stress and contact pressure at the threaded shoulder show an increasing trend.The stress at the shoulder is high and evenly distributed,indicating good sealing performance at the shoulder..关键词
油管接头/S13Cr/连接强度/温度/螺纹受力特性Key words
tubing joint/S13Cr/connection strength/temperature/stress characteristics of thread分类
能源科技引用本文复制引用
王锡军,薛小宁,孙莹,初炳军,王佳,张开强,姚力萍,汤历平..温度及轴向载荷对油管接头力学特性影响研究[J].焊管,2024,47(11):18-25,33,9.基金项目
安徽省关闭废弃矿井资源开发利用工程研究中心开放基金"改建储气库的油田老井套管柱完整性研究"(项目编号EUCMR202206). （项目编号EUCMR202206）
