进液量对气举式同向出流旋流器分离特性影响  

Study on the Influence of Inlet Flow Rate on Separation Performance of Gas-Lift Co-Directional Outflow Hydrocyclone

作　　者：刘彩玉[1] 郑九洲 李枫[1] 张勇[1] LIU Cai-yu;ZHENG Jiu-zhou;LI Feng;ZHANG Yong(School of Mechanical Science and Engineering,Northeast Petroleum University,Heilongjiang Daqing 163318,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《机械设计与制造》2024年第2期165-169,共5页Machinery Design & Manufacture

基　　金：国家863计划课题项目—井下油水分离及同井回注技术与装备(2012AA061303)。

摘　　要：为了提高旋流器的分离效率,提出一种气举式同向出流水力旋流器结构,通过注气的方式将旋流器轴心的油核举升至溢流口,加速油核向溢流口方向运动,进而提升旋流器的分离性能。基于雷诺应力模型(Reynolds Stress Model,RSM)与多相流模型(Mixture),模拟计算了入口进液量对气举式同向出流旋流器分离性能的影响,分析了进液量对旋流器内气核形态、速度场分布以及分离性能的影响规律。数值模拟结果表明:进液量分布在(3.6~8.4)m^(3)/h范围内时,随着进液量的增加,注气口处压力逐渐增大,混合液内各相介质的轴向速度与径向速度均有显著提高,旋流器轴心处的油相体积分数明显增大,旋流器的分离效率从64%增至77.9%。In order to improve the separation efficiency of hydrocyclone,an innovative design of gas-lift co-directional outflow hydrocyclone structure is proposed,The oil core of the hydrocyclone axis is lifted to the overflow port by gas injection,Accelerated the movement of the oil core towards the overflow port,improved the separation performance of the hydrocyclone.Based on Reynolds Stress Model(RSM)and Mixture Model,simulated and calculated the effects of inlet flow rate on the separation performance of gas-lift co-directional outflow hydrocyclone.Analyzed the effects of inlet flow rate on the gas core morphology,velocity field distribution and separation performance of the hydrocyclone.The simulation results show that the inlet flow rate is distributed in the range of(3.6~8.4)m^(3)/h,with the increase of inlet flow rate,the pressure at the gas injection port gradually increases,the axial and radial velocity of each phase medium in the mixed liquid increases significantly,the oil phase volume fraction at the axial center of the hydrocyclone increases significantly,and the separation efficiency of the hydrocyclone increases from 64%to 77.9%.

关 键 词：进液量 旋流器 同向出流 数值模拟 分离效率 

分 类 号：TH16[机械工程—机械制造及自动化]