基于正交试验的潜水泵结构参数优化

Optimization of structural parameters of submersible pump based on orthogonal test

合理的结构参数优化设计是保证潜水泵高扬程和高效率运行的关键。基于Fluent数值仿真数据样本,采用极差和方差分析的方法探究了不同导流条安放角(J)、进口宽度(K)、轴向长度(L)、叶片数(N)对水泵扬程(H_(Y))、效率(E_(Y))和能耗(E_(N))的影响,并基于熵值法明确了潜水泵最优结构参数组合。结果表明:J及N增加对H_(Y)、J及K增加对E_(Y)影响表现为先促后抑,而J和K增加对E_(N)影响表现为先抑后促;K增加对H_(Y)、叶片数增加对E_(Y)及E_(N)影响均表现为锯齿状波动;L与H_(Y)和E_(Y)呈正相关,与E_(N)呈负相关;J对H_(Y)、E_(Y)和E_(N)均存在极显著(p<0.01)影响,L对H_(Y)和E_(Y)存在显著(p<0.05)影响;各因素对E_(N)和H_(Y)影响大小均表现为:J>L>N>K。

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(H_(Y)),efficiency(E_(Y))and energy consumption(E_(N))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 H_(Y),the guide vane angle and the inlet width on the E_(Y)firstly increased and then decreased,while the influence of the increasing guide vane angle and the inlet width on the E_(N)first decreased and then increased.The influence of the increasing inlet width on the H_(Y)and the increasing number of blades on E_(Y)and E_(N)was fluctuated.The axial length was positively correlated with H_(Y)and E_(Y),and negatively correlated with E_(N).The guide vane angle had a very significant effect on the H_(Y),E_(Y)and E_(N)(p<0.01),and the axial length had a significant effect on the H_(Y)and E_(Y)(p<0.05).The effects of various factors on the H_(Y)and E_(N)were as follows:guide vane angle,axial length,number of blades,inlet width.