Multi-objective Optimization Design of Single-stage Double-suction Centrifugal Pump based on Orthogonal Experiment
Single-stage double-suction centrifugal pump has become the most common and universal equipment in hydraulic engineering because of its advantages of stable operation,low noise,low failure rate and easy maintenance.In this work,the single-stage double-suction centrifugal pump with model 950SY240-HY is taken as the research object,and the impeller is rapidly modeled by CF-turbo,and the numerical simulation and experimental verification of the prototype pump are carried out.On the basis of the prototype pump,orthogonal tests are designed for six key parameters of the impeller,including blade inlet and outlet positioning angle,blade envelope angle,impeller outlet diameter,outlet width and number of blades and the multi-objective optimization is carried out with head and efficiency as the objective function.The orthogonal test results were determined by range analysis method to determine the degree of effect of each factor on the optimization objective.It is found that the impeller outlet width,blade outlet positioning angle and blade number have the greatest influence on the double suction pump head and efficiency,and the pump efficiency of the finally optimal design scheme is 4.1％higher than that of the prototype pump.
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