Optimal Design of Submersible Axial Flow Pump Based on Orthogonal Test

In order to improve the hydraulic performance of submersible axial flow pump and improve its internal flow state,the orthogonal test method is used to optimize the design of submersible axial flow pump. The impeller,guide vane and wellbore are selected as test factors.Each factor takes three levels,and a three factor and three-level orthogonal scheme is designed. Each scheme is tested,and the numerical simulation results of these 9 groups of schemes are analyzed to obtain the optimal scheme. Through a range analysis,the primary and secondary order and optimal parameter combination of impeller,guide vane and wellbore of submersible axial flow pump are obtained. The test results show that the number of guide vanes has the greatest influence on the head and efficiency of submersible axial flow pump. At the design operating point,the head and efficiency of the optimal scheme selected by a comprehensive analysis are improved. The parameter matching of the optimal scheme can effectively reduce the hydraulic loss of the submersible axial flow pump,improve its hydraulic performance and improve the internal flow of the pump section so as to achieve the purpose of optimal design.