气举柱塞波浪形紊流槽流动性能强化研究  

Study on Enhancement of Wavy Turbulent Groove of Gas-Lifting Plunger to Gas Lifting Performance

作　　者：崔璐[1] 田柯 庞永策 程嘉瑞[1] 李臻[1] CUI Lu;TIAN Ke;PANG Yongce;CHENG Jiarui;LI Zhen(College of Mechanical Engineering,Xi’an Shiyou University,Xi’an,Shaanxi 710065,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2023年第2期122-127,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省自然科学基础研究计划(2023-JC-YB-376);陕西省教育厅专项科研计划项目(20JK0836)。

摘　　要：作为柱塞气举关键部件,柱塞外壁机械密封槽尺寸与排列对动态举升效果的影响明显,波浪形紊流槽结构或使环空密封性能产生较大提升,因此,通过间隙非稳态两相流数值计算方法以获取波浪形紊流槽结构对流动湍流强度的影响,进而研究波浪形紊流槽的幅值和周期两种结构参数对密封效果的影响。结果表明:新型波浪形紊流槽结构的湍流强度比原平直结构的提高了约29.91%。随着柱塞波浪形凹槽周期的逐渐降低及幅值的逐渐增大,气相在同一时间下突破柱塞到达柱塞上方的高度逐渐降低,但液相通过环空间隙泄漏至柱塞下方的现象也越来越明显,幅值和周期取值过大或过小会引起密封性能降低。As a key structure of plunger gas lift,the size and arrangement of the mechanical sealing groove on the outer wall of the plunger have a significant impact on the dynamic lifting effect,and the wavy turbulent groove structure may greatly improve the sealing performance of the annulus.Therefore,the influence of the wavy turbulent groove structure on the turbulence intensity of flow is obtained through the numerical calculation method of the unsteady two-phase flow in the gap,and then the influence of the amplitude and period of the wavy turbulent groove on the sealing effect is studied.The results show that the turbulence intensity of the new structure is about 29.91%higher than that of the original structure.With the gradual decrease of the period of the wavy turbulent groove and the gradual increase of its amplitude,the height of the gas phase breaking through the plunger to reach above the plunger at the same time decreases gradually,but the phenomenon of the liquid phase leaking below the plunger through the annular space gap is becoming more and more obvious.If the amplitude and period are too large or too small,the sealing performance will deteriorate.

关 键 词：气举柱塞 紊流槽 密封效果 数值模拟 性能优化 

分 类 号：TE377[石油与天然气工程—油气田开发工程]