Optimization design of high-speed well pump based on orthogonal experiment
CHEN Jianhua1, ZHOU Chenjia1, WANG Xue2*, JIANG Xiaoping2,1, PAN Huishan1, CAO Ling1
1. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
Abstract：In order to improve the hydraulic performance of high-speed well pump and find out the primary and secondary factors affecting its performance, a high-speed well pump 100QJ10 was selected as the research object. An L18(37)orthogonal experiment was performed with seven factors such as blade outlet width, impeller diameter, number of blades, and each factor selects three levels. 18 impellers were designed and assembled with the same guide vane respectively. CFX15.0 software was used to simulate the full flow field of 18 sets of model pumps. The main and secondary factors affecting the performance of 100QJ10 high-speed well pump were studied by range analysis method. The results show that the blade outlet angle and the impeller outlet angle have great influence on the hydraulic perfor-mance of high-speed well pump. The optimal scheme is that the impeller outlet width B2=6.5 mm, the impeller outlet diameter D2=80.5 mm, the blade outlet angle β2 = 27°, the number of blades Z=7, the blade inlet diameter D1=40 mm, the axial distance between the impeller hub and the bottom end of the reverse guide vane H=3.5 mm, and the impeller outlet bevel angle is 0°. The feasibility of orthogonal experiment combined with numerical simulation method in the optimization design of high-speed well pump was verified by characteristic performance experiment of initial model and optimization model.
