轴流式混输泵叶片载荷分布特性研究  

Study on Load Distribution Characteristics of Axial Flow Multiphase Pump

作　　者：史广泰[1,2] 罗琨 王志文[1] 刘洋[1] SHI Guang-tai;LUO Nun;WANG Zhi-wen;LIU Yang(Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China;State Key Laboratory of Hydroscience and Engineering ＆Department of Thermal Engineering, Tsinghua University, Beijing 100084, China)

机构地区：[1]西华大学流体及动力机械教育部重点实验室,四川成都610039 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《水电能源科学》2018年第4期175-178,共4页Water Resources and Power

基　　金：中国博士后科学基金特别资助(2017T100077);中国博士后科学基金资助(2016M600090);西华大学重点科研基金资助(Z1510417);西华大学流体及动力机械教育部重点实验室开放课题资助(szjj2016-004);四川省教育厅科研项目资助(重点项目)(172470)

摘　　要：为了研究气液两相条件下多级轴流式油气混输泵的叶轮叶片载荷分布特性,选用标准κ-ε湍流模型,利用CFD软件探讨了不同工况下轴流式混输泵叶轮叶片压力载荷随含气率及流量变化的规律,并分析了混输泵叶轮内进行能量转化的主要部位。结果表明,当流量一定时,随着含气率的升高,混输泵叶轮叶片工作面和吸力面压力载荷逐渐升高,且小流量工况下叶片压力载荷受含气率变化的影响程度要大于大流量工况;混输泵叶轮前半段在靠近轮毂处的能量转化能力较差,靠近轮缘处的能量转化能力较强,且叶轮前1/3段能量转化能力明显高于叶轮其他段,即混输泵内进行能量转化的主要部位是叶轮前1/3段。In order to study the load distribution characteristics of the impeller blades for axial-flow oil-gas multiphase pump under the conditions of gas-liquid two-phase,the standardκ-εturbulence model was selected,and the CFD software was used to study the loading pressure of the impeller blades with the variation of gas content and flow rate under different working conditions.The main parts of energy conversion in the impeller of hybrid pump were analyzed.The results show that when the flow rate is constant,the pressure load of the working face and suction side of the impeller of multiphase pump increases gradually with the increase of the gas content,and the loading pressure of the blade under low flow rate conditions is easier affected by the low flow rate conditions;The energy conversion ability of the first half of the multiphase pump impeller is poor near the hub,the ability of energy conversion is strong near the rim;The energy conversion ability of the first 1/3 of the impeller is obviously higher than that of the other parts of impeller.Therefore,the main part of energy conversion is the first 1/3 of the impeller in oil-gas multiphase pump.

关 键 词：轴流式混输泵 气液两相 压力载荷 数值模拟 

分 类 号：TH313[机械工程—机械制造及自动化]