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| Theory and experiment on non-overload characteristics for centrifugal pump with splitters |
| Zhang Jinfeng, Shen Yanning, Yuan Shouqi, Lu Weigang, Yuan Jianping |
| (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
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Abstract By combining the former research results about the splitters and the non-overload theory in centrifugal pumps, and based on the principle theory of pumps, the theoretical conditions to achieve the property of non-overload in centrifugal pump with splitters was analyzed, and formulas to estimate the maximum shaft power and its position were derived. Based on the requirements of both high efficiency and non-overload, blade outlet angleβ2, blade outlet width b2, volute throat area Ft and the inlet diameter of splitters Di were chosen with three levels to design a normal L9(3*4)orthogonal test scheme. By analyzing the test results, the important order of the four geometric parameters on the performance of centrifugal pumps with splitters was obtained as b2,β2,Ft,Di, and the estimating formulas were validated. Meanwhile, the optimized design scheme was determined, and corresponding test was done also. It demonstrates that the experiment purpose was reached, the design method to combine the splitters and non-overload theory is reasonable, which can get the property of both high efficiency and non-overload.
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Received: 26 February 2010
Published: 30 September 2010
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