混合式油气混输泵内部流动分析  

Analysis on the Internal Flow of a Hybrid Oil-gas Mixed Pump

作　　者：杨瑞峰 张立传 刘剑 罗文 田旺龙 张佳伟 YANG Rui-feng;ZHANG Li-chuan;LIU Jian;LUO Wen;TIAN Wang-long;ZHANG Jia-wei(Water Resources Utilization Center of Shule River Basin,Yumen 735211,China)

机构地区：[1]甘肃省疏勒河流域水资源利用中心,甘肃玉门735211

出　　处：《液压气动与密封》2023年第1期51-57,共7页Hydraulics Pneumatics & Seals

基　　金：国家重点研发计划(2018YFB0606100)。

摘　　要：为分析混合式油气混输泵内部流动情况、探索混合式叶轮结构对混输泵性能的影响,该文基于Pro/E及Fluent等软件,对混合式油气混输泵建立全三维流场。并采用Mixture多相流模型、Standard k-epsilon湍流模型以及基于Pressure-Velocity耦合计算的Simple C算法。以理想状态的水和空气作为多相介质,通过改变含气率(GVF)等工况,分析了混合式油气混输泵的内部流动情况,以及不同外径的混流式叶轮对油气混输泵外特性的影响。结果表明:混合式油气混输泵相较于原型泵的扬程和效率得到提高,混流式叶轮内的气液分布较为均匀,随着混流式叶轮外径的增大,扬程提高越明显;在相同混流式叶轮外径下,随含气率提高,扬程逐渐下降,叶轮出口边出现气液分离,但流道内湍动能基本不发生变化。In order to analyze the internal flow of the hybrid oil-gas mixed pump and explore the influence of the hybrid impeller structure on the performance of the mixed pump,this paper established a full three-dimensional flow field for the hybrid oil-gas mixed pump based on software such as Pro/E and Fluent.And adopt Mixture multiphase flow model,Standard k-epsilon turbulence model and Simple C algorithm based on Pressure-Velocity coupling calculation.Using ideal water and air as the multiphase medium,by changing the gas content(GVF)and other working conditions,the internal flow of the hybrid oil-gas mixed pump is analyzed,and the mixed-flow impellers with different outer diameters are used for the oil-gas mixed pump.The influence of external characteristics.The results show that the head and efficiency of the hybrid oil-gas mixed pump are improved compared with the prototype pump.The gas-liquid distribution in the mixed-flow impeller is more uniform.With the increase of the outer diameter of the mixed-flow impeller,the increase in the head is more obvious;Under the outer diameter of the mixed-flow impeller,the head gradually decreases as the gas content increases,and gas-liquid separation occurs at the outlet of the impeller,but the turbulent kinetic energy in the flow channel basically does not change.

关 键 词：混合式油气混输泵 混流式叶轮 多相流 流动分析 

分 类 号：TH137[机械工程—机械制造及自动化] TH312