油气管道柔性套袖密封方法研究  

Research on Sealing Method of Flexible Sleeve for Oil and Gas Pipeline

作　　者：陶宏伟 杨川 刘雪光 郭向阳 张仕民[2] Tao Hongwei;Yang Chuan;Liu Xueguang;Guo Xiangyang;Zhang Shimin(PipeChina Southwest Pipeline Co.,Ltd.;College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing))

机构地区：[1]国家管网集团西南管道有限责任公司 [2]中国石油大学(北京)机械与储运工程学院

出　　处：《石油机械》2022年第11期111-118,共8页China Petroleum Machinery

基　　金：国家管网集团西南管道公司项目“山地油品管道大变形损伤泄漏快速控制技术研究”(201910)。

摘　　要：针对山地和隧道等复杂环境下油气管道的快速堵漏问题,提出了油气管道柔性堵漏机具——柔性套袖,对其充压式主动密封结构进行了详细分析与试验论证。通过有限元仿真对橡胶内胆凹槽位置进行了分析设计,基于所设计的橡胶内胆凹槽位置和充压式主动密封结构,分别进行了内胆-内胆之间密封和内胆-管壁之间密封的有限元仿真,并通过密封原理试验和密封性能试验,对所设计的充压式主动密封的可行性和可靠性进行试验论证。仿真和试验结果表明:当柔性套袖橡胶内胆内置凹槽与内端面之间距离为25 mm时,可保证密封管在初始压力小于3.0 MPa时不突出,实现有效初密封;采用锥面对接方式粘接的充压式密封管能够实现柔性套袖对10 MPa管道泄漏压力的有效密封。研究结果对充压式主动密封在其他油气管道堵漏机具中的应用设计具有参考意义。To solve the problem of rapid plugging of oil and gas pipelines in complex environments such as mountains and tunnels,a flexible sleeve was proposed,which is a flexible plugging tool for oil and gas pipelines.Its pressurized active sealing structure was analyzed and tested.The groove position of the rubber liner was analyzed and designed by using finite element simulation.Based on the designed groove position of the rubber liner and the pressurized active sealing structure,the finite element simulations of the sealing between liner and liner and the sealing between liner and pipe wall were carried out.Sealing principle test and sealing performance test were carried out to prove the feasibility and reliability of the pressurized active sealing.The simulation and test results show that when the distance between the built-in groove of the flexible sleeve rubber liner and the inner end face is 25 mm,it can guarantee the sealing tube not to protrude when the initial pressure is less than 3.0 MPa,realizing effective initial sealing.The pressurized sealing tube bonded by cone joint can realize the effective sealing of the flexible sleeve against the leakage pressure of 10 MPa pipeline.The research results have reference significance for the application and design of pressurized active sealing in other oil and gas pipeline plugging devices.

关 键 词：油气管道 柔性套袖 快速堵漏 密封管 主动密封 锥面对接 

分 类 号：TE934[石油与天然气工程—石油机械设备]