油气管道维抢修专用夹板阀的设计及应用

Designation and Application of Special Splint Valve for Maintenance and Repair of Oil and Gas Pipelines

油气管道维抢修专用阀门主要用于石油和天然气管道的开孔和封堵作业,是管道开孔封堵作业中不可或缺的专用阀门。根据油气管道不停输开孔封堵的施工工艺要求,设计了由上、中、下三片阀体构成的三明治阀门,密封部分采用了压片压紧式新型密封结构形式,中阀体开孔以保证封堵过程中筒刀和封堵头的顺利通过。通过理论计算和有限元分析,对该阀门的强度和刚度进行了优化,通过计算校核专用阀门满足强度要求。设计完成的Φ168~1 016 mm等全系列夹板阀成功应用到西气东输等管道维抢修现场,通过实践证明此种结构设计能够满足现场施工要求,成为了管道维抢修开孔封堵作业中的标配设备。

The special valve for maintenance and emergency repair of oil and gas pipelines is mainly used in holing and plugging operation of oil and gas pipelines,which is an indispensable special valve for holing and plugging operation of pipelines.According to the construction process requirements for holing and plugging of oil and gas pipelines of no stopping transportation,a three-sandwich type of valve with top,medium,and bottom valve part is designed,and a new type of sealing structure of the tablet compression type form is adopted.The medium part of the valve is perforated to ensure the smooth passage of the barb and the plugging head during the plugging process.Based on theoretical calculation and finite element analysis,the strength and stiffness of the valve are optimized,and the valve is calculated to meet the strength requirement.The whole series of special splint valves withΦ168 mm to 1016 mm are designed and successfully applied to the maintenance and emergency repair site of West-to-East Gas Pipeline and other pipelines,which proves that the structure can meet the requirements of field construction and the split valve becomes the standard equipment for maintenance and emergency repair of pipelines.