Abstract：In order to study the influence of splitter blade’s parameters on the centrifugal pump performance,a L9(34) orthogonal experiment was designed with four factors and three values.These factors were bias angle β in peripheral direction,deflection angle,inlet diameter and numbers Z of splitter blades.The numerical calculations and performance tests were carried out on each impeller,and the influence laws of splitter blades parameter on the centrifugal pump performance were analyzed in detail.The results show that the primary factors for the head and efficiency are blade numbers Z and inlet diameter D′,and that the best combination of parameters for performance is β=0.60 θ,D′ ≈2/3D2,α=-5°～-10° and Z values as high as possible.Comparing with the results of the performance test and the numerical simulation,it was confirmed that the numerical simulation method was reliable and valid,and can offer some useful references for hydraulic performance and the optimization design of low specific speed centrifugal pump.
[1]Yuan S.Advances in hydraulic design of centrifugal pumps[C].Canada:Vancouver,British Columbia,1997:1-15.[2]Kergourlay G,Younsi M.,Bakir F,et al.Influence of splitter blades on the flow field of a centrifugal pump:Test analysis comparison[J].International Journal of Rotating Machinery,2007,2007:1-13.[3]Golcu M,Pancar Y,Sekmen Y.Energy saving in a deep well pump with splitter blade[J].Energy Conversion and Management,2006,47:638-651.[4]Golcu M.Neural network analysis of head flow curves in deep well pumps[J].Energy Conversion and Management,2006,47:992-1003.[5]何有世,袁寿其,郭小梅,等.分流叶片离心泵叶轮内变工况三维数值分析[J].江苏大学学报:自然科学版,2005,26(3):193-197.He Youshi,Yuan Shouqi,Guo Xiaomei,et al.Numerical simulation for inner flow of impeller with splitting vanes of centrifugal pump under different operating condition[J].Journal of Jiangsu University:Natural Science Edition,2005,26(3):193-197.(in Chinese)[6]耿少娟,聂超群,黄伟光,等.不同叶轮形式下离心泵整机非定常流场的数值研究[J].机械工程学报,2006,42(5):27-31.Geng Shaojuan,Nie Chaoqun,Huang Weiguang,et al.Numerical study of unsteady flow in centrifugal pump with different type of impellers[J].Chinese Journal of Mechanical Engineering,2006,42(5):27-31.(in Chinese)
