摘要
在石油和天然气的运输过程中,为了能够快速解决管道的泄漏问题并在管道不停输的情况下进行管道封堵,设计了一种可快速封堵和导流的轮式机器人,并对机器人工作中的流体域进行了流场分析。分析结果表明:管道机器人内流场的特性受封堵装置的导通管结构和形状变化的影响非常大,随着流体速度的增加,流体流经封堵装置中间导通管时,由于管道横截面积的突变会在导通管的前部、中部及尾部形成高、中、低压区域,并且产生涡流,影响流体的稳定流动,进而影响机器人在管内的作业;选择导通管的入口形状为圆角,圆角半径为35 mm,导通管直径为85 mm时,流体的压降和最大速度的下降效果最为明显;当流速小于等于8 m/s时,机器人可以在管道内稳定工作,达到密封封堵和导流的要求。所得结论可为后续封堵导流机器人的设计和应用提供参考。
In order to quickly solve the problem of pipeline leakage and plug the pipeline without stopping pipeline transportation,a design of a wheeled robot that can quickly plug and divert was proposed,and the flow field of the fluid domain in the robot’s work was analyzed.The analysis results show that the characteristics of the flow field in the pipeline robot are greatly affected by the change of structure and shape of the conduction pipe in plugging device;as the fluid velocity increases,when the fluid flows through the conduction pipe in the middle of the plugging device,due to the abrupt change of the cross-section area of the pipeline,high,medium and low pressure areas will be formed in the front,middle and tail of the conduction pipe,and eddy current will be generated,which will affect the stable flow of the fluid,and then affect the operation of the robot in the pipe;when the inlet shape of the conduction pipe is rounded,the radius of curvature is 35 mm,and the diameter of the conduction pipe is 85 mm,the pressure drop of fluid and the maximum velocity drop effect are the most obvious;when the flow rate is less than or equal to 8 m/s,the robot can work stably in the pipeline,reaching the requirements of plugging and diversion.The conclusions provide reference for the subsequent design and application of plugging and diversion robot.
作者
韩传军
费一栗
张芹芹
蔡文博
Han Chuanjun;Fei Yili;Zhang Qinqin;Cai Wenbo(School of Mechanical Engineering,Southwest Petroleum University)
出处
《石油机械》
北大核心
2021年第12期141-148,共8页
China Petroleum Machinery
基金
四川杰出青年基金资助项目“天然气多管旋风分离技术研究”(19JCQN0081)
四川省创新苗子工程项目“洪水冲沙作用下天然气管道失效机理研究”(2019123)。
