分流叶片对混输泵水力性能影响的优化分析  

Optimization analysis of effect of splitter blades on flow characteristics of multiphase pumps

作　　者：肖业祥[1] 桂中华 张瑾[1] 姚鑫 史广泰[3] XIAO Yexiang;GUI Zhonghua;ZHANG Jin;YAO Xin;SHI Guangtai(State Key Laboratory of Hydroscience and Engineering&Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;Pumped-storage Technological&Economic Research Institute State Grid Xinyuan Company LTD,Beijing 100761,China;Key Laboratory of Fluid and Machinery and Engineering,Xihua University,Chengdu 610039,China)

机构地区：[1]清华大学、水沙科学与水利水电工程国家重点实验室&能源与动力工程系,北京100084 [2]国网新源控股有限公司抽水蓄能技术经济研究院,北京100761 [3]西华大学、流体及动力机械教育部重点实验室,成都610039

出　　处：《水力发电学报》2023年第4期25-31,共7页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(52279088);水沙国家重点实验室开放研究基金资助项目(sklhse-2022-KY-06);国家电网有限公司总部管理科技项目资助(5419-202243054A-1-1-ZN)。

摘　　要：混输泵作为输送海洋油气资源的关键设备,其输送性能直接影响油气开采效率和输送成本。因此,为探究分流叶片对混输泵流动特性的优化效果,本文采用ANSYS CFX软件对带分流叶片前后的混输泵在进口含气率为5%、10%和15%工况下进行数值模拟计算。结果表明:在含气率分别为5%、10%、15%时优化后混输泵单级扬程增加了18.9%、23.5%、24.2%,分流叶片的存在显著提升了混输泵的增压性能,改善了含气率对叶轮内液相速度分布规律的影响,抑制了叶轮内气相聚集现象的发生,使得叶轮内气相分布更为均匀。此研究结果为优化混输泵性能提供了参考。As a key equipment to transport offshore oil and gas resources,the transport performance of multiphase pumps directly affects the production efficiency and transport cost of oil and gas.To study the effect of splitter blades on the flow characteristics of a multiphase pump,in this work,an ANSYS CFX code is used to numerically simulate its flows in the sections before and behind the blades at the gas volume fractions of 5%,10%,and 15%.The results indicate the optimized single-stage head of the pump is increased by 18.9%,23.5%,and 24.2%at the three fractions respectively.Installing the splitter blades significantly improves the pressurization performance of the pump and the effect of gas volume fraction on the velocity distribution pattern of the liquid phase in the impeller.And it can inhibit the occurrence of gas phase aggregation in the impeller and makes its gas phase distribution more uniform.

关 键 词：混输泵 分流叶片 含气率 流动特性 

分 类 号：TH312[机械工程—机械制造及自动化]