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| Orthogonal test and optimization design of submersible pump guide vanes |
| Zhou Ling1,Shi Weidong1,Lu Weigang1,Xu Rongjun2,Wang Chuan1 |
| (1.Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang,Jiangsu 212013,China;2.Nanjing Technical and Research Center of Pump,Nanjing,Jiangsu 211500,China) |
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Abstract In order to improve the performance of submersible pumps,with a channel-type guide vane as research object,an L9(34) orthogonal experiment was performed with four factors and three values including blade wrap angle of guide vane,blade inlet angle,and the wrap angle of transition,etc.9 channel-type guide vanes were designed.The blade profile of guide vane was designed to be vary angle logarithmic spiral,9 guide vanes were coupled with the same impeller.The whole flow field of two-stage submersible pump at the operating point for design was simulated by Fluent using the standard k-ε turbulence model,SIMPLEC algorithm,second-order upwind scheme to solve and analyze the indepen-dent of the number of the grid.9 groups of the efficiency and head in design scheme were obtained.The effects of geometrical parameters on efficiency,head were researched using orthogonal test method.The primary and secondary factors of the design parameters were acquired by way of variance analysis.Blade wrap angle of guide vane and blade inlet angle has a greater impact on submersible pump performance.According to the test result,an optimum program to further design was put forward.After manufactured and tested,the efficiency of the final optimal design model pump at rated flow point is of 67.51% and the single-stage head is of 13.84 m.The efficiency and head were significantly improved compare with similar products and national standards.
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Received: 21 March 2011
Published: 30 July 2011
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