基于正交试验的单级双吸离心泵多目标优化设计  

Multi-objective Optimization Design of Single-stage Double-suction Centrifugal Pump based on Orthogonal Experiment

作　　者：钟朝孺 李凯莉 李晨昊 张高正 左仓 朱国俊[3] ZHONG Zhaoru;LI Kaili;LI Chenhao;ZHANG Gaozheng;ZUO Cang;ZHU Guojun(Pipe China South China Company,Guangzhou 510623,China;Xi'an Aerospace Pimps Co.,Ltd.,Xi'an 710077,China;Xi'an University of Technology,Xi'an 710048,China)

机构地区：[1]国家石油天然气管网集团有限公司华南分公司,广州510623 [2]西安航天泵业有限公司,西安710077 [3]西安理工大学,西安710048

出　　处：《大电机技术》2024年第3期77-84,共8页Large Electric Machine and Hydraulic Turbine

基　　金：陕西省教育厅自然科学专项(22JK0482)。

摘　　要：单级双吸离心泵由于运行平稳、噪声小、故障率低、易于维护等优点,已成为水利工程中最普遍、最通用的设备。本文以型号为950SY240-HY的单级双吸离心泵为研究对象,通过模型试验与数值模拟,以扬程和效率为目标函数进行多目标优化,在原型泵的基础上对叶片进、出口安放角、叶片包角、叶轮出口直径、出口宽度及叶片数这六个叶轮关键参数设计了L^(18)(3^(5)×2^(1))正交试验。通过极差分析,明确了各因素对单级双吸离心泵水力性能的影响程度,发现叶轮出口宽度、叶片出口安放角和叶片数对单级双吸泵扬程与效率的影响最大。相比于原始方案,正交试验最终确定的单级双吸离心泵设计方案,各工况点下扬程与效率有显著提高,叶轮内流态得到改善,流动损失减小,水力性能提高,额定工况下效率提高了4.1%,符合优化的目标。Single-stage double-suction centrifugal pump has become the most common and universal equipment in hydraulic engineering because of its advantages of stable operation,low noise,low failure rate and easy maintenance.In this work,the single-stage double-suction centrifugal pump with model 950SY240-HY is taken as the research object,and the impeller is rapidly modeled by CF-turbo,and the numerical simulation and experimental verification of the prototype pump are carried out.On the basis of the prototype pump,orthogonal tests are designed for six key parameters of the impeller,including blade inlet and outlet positioning angle,blade envelope angle,impeller outlet diameter,outlet width and number of blades and the multi-objective optimization is carried out with head and efficiency as the objective function.The orthogonal test results were determined by range analysis method to determine the degree of effect of each factor on the optimization objective.It is found that the impeller outlet width,blade outlet positioning angle and blade number have the greatest influence on the double suction pump head and efficiency,and the pump efficiency of the finally optimal design scheme is 4.1%higher than that of the prototype pump.

关 键 词：双吸离心泵 性能试验 正交优化 极差分析 

分 类 号：TH311[机械工程—机械制造及自动化]