基于ANSYS的双卡套接头螺纹密封性有限元分析  

Finite Element Analysis of Thread Tightness of Double-Ferrule Joint Based on ANSYS

作　　者：袁运栋 韩建强 张广建 余春浩 郝振东 代光洪 依力娜尔·吐尔逊 范开峰 YUAN Yundong;HAN Jianqiang;ZHANG Guangjian;YU Chunhao;HAO Zhendong;DAI Guanghong;YILINAER·Tuerxun;FAN Kaifeng(CNPC International Pipeline Co.,Ltd.,Beijing 100029,China;College of Petroleum Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;School of Petroleum and Natural Gas Engineering/School of Energy,Changzhou University,Changzhou Jiangsu 213164,China)

机构地区：[1]中油国际管道有限公司,北京100029 [2]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [3]常州大学石油与天然气工程学院/能源学院,江苏常州213164

出　　处：《辽宁石油化工大学学报》2024年第5期82-89,共8页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金青年科学基金项目(51904147);辽宁省教育厅科学研究经费项目(L2020035);中国石油集团东南亚管道有限公司项目(DNY-2022-HT-JS-29);辽宁省自然科学基金计划博士科研启动项目(20180540044)。

摘　　要：卡套接头广泛应用于油气管道等液压气动设备的连接中,其连接可靠性对油气管道安全具有重要影响,但针对外部工况对油田地面管线卡套接头螺纹受力特性影响的研究未见报道。采用SolidWorks软件,建立了双卡套接头三维模型;应用ANSYS有限元软件,对卡套接头的最大等效应力(Von Mises应力)进行了数值分析。结果表明,在屈服极限内,轴向力越大,卡套接头的密封性越好,而内压对管接头密封影响很小,可以忽略螺纹处因应力过大发生粘扣的风险;螺纹参数对密封性能的影响很大;对外径为12 mm、内径为9 mm的卡套接头,最佳螺距为1.5 mm,最佳螺纹圈数为7。研究结果可为卡套接头的结构性能优化及装配过程中的科学操作提供理论依据和参考,具有重要的工程意义。Card sleeve joints are widely used in the connection of hydraulic and pneumatic equipment such as oil and gas pipelines,and its connection reliability has an important impact on the safety of oil and gas pipelines.However,there is no report on the influence of external working conditions on the stress characteristics of the thread of card sleeve joints in oilfield ground pipelines.A three-dimensional model of the double card sleeve joint was established using SolidWorks software;The maximum equivalent stress(Von Mises stress)of the sleeve joint was numerically analyzed using ANSYS finite element software.The results indicate that within the yield limit,the greater the axial force,the better the sealing performance of the sleeve joint,while the internal pressure has little effect on the sealing of the pipe joint,and the risk of thread sticking due to excessive stress can be ignored;The influence of thread parameters on sealing performance is significant;The optimal pitch and number of threads for a sleeve joint with an outer diameter of 12 mm and an inner diameter of 9 mm are 1.5 mm and 7,respectively.The research results can provide theoretical basis and reference for the optimization of structural performance and scientific operation in the assembly process of card sleeve joints,which has important engineering significance.

关 键 词：卡套接头 密封性能 螺纹 Von Mises屈服准则 最大等效应力 

分 类 号：TE28[石油与天然气工程—油气井工程]