摘要
针对在复合载荷工况下石油套管易失效和易泄漏的问题,对复合载荷作用下套管特殊螺纹接头的应力水平和接触压力沿密封面的分布规律进行了研究。依据材料性能和套管接头的结构特点,对特殊螺纹套管接头进行了简化;运用ANSYS软件建立了套管接头的有限元模型,包括网格划分、加载和约束,然后利用ANSYS接触分析功能模块计算得到了特殊螺纹套管接头在上扣过盈配合、轴向拉力、内压以及复合载荷下的应力云图和接触压力云图,着重研究了套管在不同荷载作用下的连接性能和密封性能。研究结果表明:复合载荷中的各个单一载荷对套管接头的性能影响是不同的;轴向拉伸荷载对扭矩台肩和主密封密封性能影响较大,内部压力的增大能够提高接头的密封性能。
Aiming at the problem of oil casing which is prone to failure and leak under complex loads,the stress and the contact pressure distribution rule of premium thread casing connection under complex loads along the sealing surface were investigated. According to the material properties and structural characteristics of casing connection,the model of casing connection was simplified; the finite element model of the casing connection was established in ANSYS software,including meshing,loading and constraint handle. Then the contact analysis module of ANSYS was used to calculate stress nephogram and contact stress nephogram under the make-up,the axial tension,the internal pressure and complex conditions. The connection and sealing performance of premium thread casing connection under different loads were investigated.The results indicate that each single load has a different effect on performance of connection. Axial tension has a greater influence on the sealing performance of connection. The internal pressure is beneficial to improve the sealing performance.
出处
《机电工程》
CAS
2015年第7期954-957,共4页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51175146)
作者简介
宋伟伟（1990-），男，江苏阜宁人，主要从事数字化设计方面的研究．E—mail：sww101052@163-．com
通信联系人：纪爱敏，男，教授，博士生导师．E—mail：jam@ustc．edu
