同心注水管柱分层测压密封段设计与研究  

Design and Study of Stratified Pressure Sealing Tool Used in Concentric Water Injector

作　　者：孟培媛 王稳[1] MENG Peiyuan;WANG Wen(College of Mechanical Engineering,Xijing University,Xi'an Shaanxi 710123,China)

机构地区：[1]西京学院机械工程学院,陕西西安710123

出　　处：《润滑与密封》2020年第5期114-118,共5页Lubrication Engineering

基　　金：陕西省教育厅基金项目(18JK1201);西京学院校科研基金项目(XJ160121).

摘　　要：设计一种用于同心注水管柱长期分层静压测试的密封段,该密封段为纯机械结构,利用重力冲击触发,依靠井下压力推动活塞压缩胶筒进行坐封,具有施工简单、长期工作稳定可靠的优点。根据该密封段的使用要求,对常用的桶形胶筒结构进行改进,在胶筒内侧增加金属衬环,以增强变形的稳定性和可控性。ABAQUS有限元仿真结果表明,改进后的胶筒与配水器内壁的密封系数和最大接触压力均提高了30%以上,初始密封性能有了很大提高,室内样机试验证明其双向密封压差最大可达20 MPa。将该密封段样机在井下进行了10天的长期测试,达到了预期功能,可用于生产实践。A sealing tool for stratified static pressure test of concentric water injection pipe column was designed.The sealing tool is a pure mechanical structure,which is triggered by gravity impact,and realizes the sealing by compressing the rubber sleeves with the piston driven by the downhole pressure.The sealing tool has the advantage of simple construction and can work stably and reliably for a long time.According to the use requirements of the sealing tool,the structure of the common barrel rubber sleeve was improved,and a metal lining ring was added inside the rubber sleeve to enhance the stability and controllability of deformation.The results of ABAQUS finite element simulation show after improvement,the sealing coefficient and maximum contact pressure between the rubber sleeve and the water distributor are increased by more than 30%,the initial sealing performance is greatly improved.The prototype test proves that the maximum sealing pressure from both two sides of the rubber sleeve can be up to 20 MPa.The sealing tool prototype was tested underground for 10 days in the downhole and achieved the expected function,which can be used in production practice.

关 键 词：同心注水管柱 同心配水器 胶筒 密封性能 

分 类 号：TB42[一般工业技术]