高效无过载潜污泵的优化设计与试验研究.pdf

FLUID MACHINERY
Vol.43,No.3,2015
文章编号:1005-0329(2015)03-006-06
高效无过载潜污泵的优化设计与试验研究
邱勇
(江苏振华泵业制造有限公司,江苏泰州225500)
摘要:为了使潜污泵同时具有高效与无过载特性,针对模型泵100W110-15-7.5的叶轮进行优化设计,采用正交
试验设计法,设计了一组7因素3水平的正交方案。对每个方案进行数值模拟,并对计算得到的数据进行极差分析,获
得了各儿何参数影响性能的主次顺序。采用加权方法,将扬程、效率、轴功率多项指标转化为单项综合性能指标,利用超
传递近似法来确定各目标函数的权重因子的数值,并对综合性能指标进行极差分析,得到了潜污泵的最优参数。在数值
模拟基础上,对最优模型样机进行了试验,测试结果表明:模型泵的额定点效率达到81.04%,在运行区间内无马鞍区、无
过载现象发生,且高效区较宽,满足设计要求。预测曲线与试验曲线基本吻合,表明数值模拟较为准确,对高效无过载潜
污泵的设计具有一定的指导意义。
关键词:澘污泵;正交试验;无过载;优化设计
中图分类号:TH138
文献标志码:A
doi:10.3969/j,.issn.1005-0329.2015.03.002
Optimal Design and Experiment on a High-efficiency Non-overload Submersible Sewage Pump
QIU Yong
Jiangsu Zhenhua Pump Industry Co Ltd., Taizhou 225500, China)
Abstract In order to make submersible sewage pump have the characteristics of high-efficiency and no-overload, optimization
design of thel00qw110-15-7 5 model pump impeller was done by using the orthogonal design method Orthogonal scheme o
seven factors and three levels was designed. Each scheme was calculated by numerical simulation, and the data analyzed by range
analysis. The influence primary and secondary orders of geometric parameters on the characteristics were obtained. The head, effi-
ciency and shaft power indicators were converted into a single comprehensive performance indicator by the weighted method. Addi
tionally, the super transitive approximation method was applied to update optimal weighted coefficients in the objective function
Through the comprehensive performance indicator range analysis, the optimization parameter combination was gotten. The optimal
model prototype, based on the simulation, was tested. And the test results show that, the efficiency of the model pump reaches
81.04%o at the rated point. In the whole process of pump operation, no saddle area and no overload phenomenon occurs, meeting
the design requirements. Predicted curve is basically consistent with the experimental one, indicating the numerical simulation
accurate, that means it has a certain significance for high-efficiency non-overload submersible sewage pump design
Key words: submersible sewage pump; orthogonal experiment; non-overload optimized design
引言
等深入分析了潜污泵的运行特点,针对澘污泉易
过载的问题,提出了无过载潜污泵的水力设计方
潜水排污泵作为环保和污水处理的关键设法1?。倪合玉推导了泵轴功率曲线有极值的必
备,在市政工程、工业、水利建设等行业中起着十要条件,并提出了潜污泵双流道叶轮设计的经验
分重要的作用。但按常规方法设计出的潜水排污公式。 Nishi Yasuyuki等通过改进一单叶片叶
泵存在效率低、易过载等问题。
轮,提高了潜污泵的效率?。从小青等研究了潜
目前因内外众多学者对潜污泵的优化设计进污泵的现状与进展,并对潜污泵进行正交试验研
行了大量的数值模拟和试验研究。施卫东、蒋婷究,得到了儿何参数对效率、最大轴功率影响规
收稿日期:2014-09-28修稿日期:2014-12-25