小流量工况叶片数对多相混输泵增压性能的影响  

The Effect of Blade Numbers on the Pressurization Performance of a Multiphase Pump under the Low Flow Rate Condition

作　　者：史广泰 刘宗库 陈佩贤 李和林 朱玉枝 SHI Guang-tai;LIU Zong-ku;CHEN Pei-xian;Li He-lin;ZHU Yu-zhi(School of Energy and Power Engineering,Xihua University,Chengdu 610039,China;Civil Engineering Department,Jiuquan Vocational Technical College,Jiuquan,735000,Gansu Province,China)

机构地区：[1]西华大学能源与动力工程学院,成都610039 [2]酒泉职业技术学院土木工程学院,甘肃酒泉735000

出　　处：《中国农村水利水电》2020年第8期87-90,共4页China Rural Water and Hydropower

基　　金：国家重点研发计划(2018YFB0905200);中国博士后科学基金特别资助(2017T100077);中国博士后科学基金面上资助(2016M600090);西华大学重点科研基金资助(Z1510417);四川省教育厅科研项目资助(重点项目)(172470);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)。

摘　　要：叶轮叶片数是多相混输泵设计的重要参数,同时与泵的性能密切相关。为了研究叶片数对多相混输泵增压性能的影响,以自主研发的多相混输泵为研究对象,使用Geometry软件改变叶轮叶片数。基于标准的k-ε湍流模型,选用Fluent软件来对小流量工况下叶片数分别为3,4和5的多相泵内流动特征进行数值计算,总结不同叶片数对其内部压力分布和增压性能的影响规律。研究发现:在叶片压力面,当叶片数为4时,叶片进口低压区面积最少、压力变化均匀,同时对介质增压效果较好。因此,综合比较发现当叶片数等于4时的混输泵增压性能最好。The number of impeller blades is an important parameter in the design of multiphase pump and is closely related to the performance of the pump.In order to investigate the effect of blade numbers on the pressurization performance of the self-developed multiphase pump,the Geometry software is used to change impeller blades.Based on the standard k-εturbulence model,the Fluent software is selected to simulate flow characteristics in a multiphase pump with the different impeller blades(Z=3,4,and 5)under the low flow rate condition.The effect of blade numbers on pressure distribution and pressurization performance is summarized.The results show that when the impeller blade is 4,the low-pressure region at the blade inlet is the smallest and the pressure variation is uniform.Meanwhile,the pressure pressurization on the medium is better.Therefore,it is found that when the impeller blade is 4,the pressurization performance of the pump is the best.

关 键 词：小流量 叶片数 增压性能 混输泵 数值模拟 

分 类 号：TV136.2[水利工程—水力学及河流动力学] TH312[机械工程—机械制造及自动化]