关键词: 潜水泵;结构优化;正交试验;熵值法;安放角;进口宽度;轴向长度;叶片数;

Abstract: Reasonable structural parameter optimization design is the key to ensure the high head and high efficiency operation of submersible pumps.Based on the Fluent numerical simulation data samples, the effects of different guide vane angles(J),inlet width(K),axial length(L),and number of blades(N) on the pump head(HY),efficiency(EY) and energy consumption(EN) were investigated by range and variance analysis methods.The optimal structural parameter combination of the submersible pump was determined based on the entropy method.The results showed that the influence of increasing guide vane angle and the number of blades on the HY,the guide vane angle and the inlet width on the EY firstly increased and then decreased, while the influence of the increasing guide vane angle and the inlet width on the EN first decreased and then increased.The influence of the increasing inlet width on the HY and the increasing number of blades on EY and EN was fluctuated.The axial length was positively correlated with HY and EY,and negatively correlated with EN.The guide vane angle had a very significant effect on the HY,EY and EN(p<0.01),and the axial length had a significant effect on the HY and EY(p<0.05).The effects of various factors on the HY and EN were as follows: guide vane angle, axial length, number of blades, inlet width.

Key words: submersible pump; structure optimization; orthogonal test; entropy method; guide vane angle; inlet width; axial length; number of blades;