特殊螺纹接头参数对套管连接性能影响的有限元分析  

Finite Element Analysis of the Influence of Special Threaded Joint Parameters on Casing Connection Performance

作　　者：刘源[1] 纪爱敏[1] 李堑[1] 宋伟伟[1] 樊鑫业 许才斌 LIU Yuan JI Aimin LI Qian SONG Weiwei FAN Xinye XU Caibin(College of Mechanical and Electronic Engineering, Hohai University,Changzhou 213022 ,China Jiangsu Changbao Steeltuhe Co. ,Ltd. ,Changzhou 213000, China)

机构地区：[1]河海大学机电工程学院,江苏常州213022 [2]江苏常宝钢管股份有限公司,江苏常州213018

出　　处：《机械与电子》2017年第2期3-8,12,共7页Machinery & Electronics

基　　金：国家自然科学基金项目(51175146);江苏省政策引导类计划(产学研合作)--前瞻性联合研究项目(BY2015030-02)

摘　　要：为提升特殊螺纹套管接头的连接性能和密封性能,利用ANSYS软件建立套管特殊螺纹接头参数化有限元分析模型,并基于因素轮换法的基本思想,研究不同结构参数(包括螺纹承载面角度、台肩面角度、螺纹锥度)对套管接头连接性能和密封性能的影响。结果表明,在综合考虑接头的塑性变形和滑脱失效两个方面的影响,承载角应选择一个较小的角度值;在复合载荷工况作用下,负角度的台肩辅助密封的效果要好于直角台肩;套管在上扣力矩和轴向拉伸载荷作用下,当接箍内螺纹锥度等于套管外螺纹锥度时,套管接头的连接性能较好。In order to improve the connection and sealing performance of special threaded casing joint, a finite element analysis model was established for the special threaded casing joint by using the ANSYS system in this paper, and the influence of different structure parameters including the angle of thread bear- ing surface, shoulder surface, and taper of the thread on the casing joint performance was studied based on the factor rotation idea. The research results showed that a smaller angle value should be chosen in the de- sign of the bearing angle considering the influence of the plastic deformation and slippage fallure. Under the combined external load conditions, the effect of auxiliary seal on the shoulder angle was better than that of the right angle shoulder. Under the action of the upper buckle and the axial tension load, when the internal thread taper of the coupling was equal to the taper of the external thread of the casing, the connec- tion performance of the casing joint was better.

关 键 词：特殊螺纹接头 APDL 结构参数 密封性能 因素轮换法 

分 类 号：TH131.3[机械工程—机械制造及自动化]