排灌机械工程学报2025，Vol.43Issue(3)：254-259,267,7.DOI:10.3969/j.issn.1674-8530.23.0159
高速离心泵一体式叶轮多目标优化设计
Multi-objective optimization design of integrated impeller for high-speed centrifugal pump
摘要
Abstract
It is essential to develop an integrated impeller that combines the functionalities of both the inducer and impeller found in traditional high-speed centrifugal pumps.This design aims to improve the hydraulic performance of high-speed centrifugal pumps while maintaining the requirements for a compact structure and reliability,without altering the other flow components.Based on the operational parameter requirements of a certain actual engineering project,an initial model of an integrated impeller featuring three long blades and three splitter blades was designed.With the optimization objec-tive of improving the efficiency of high-speed centrifugal pumps and reducing the necessary cavitation margin,the Box-Behnken design was used to conduct a significant analysis of the geometric parameters of the integrated impeller,thereby determining the optimization variables for the impeller.Response surface methodology was used to establish a surrogate model between the objective function and optimization variables.The NSGA-Ⅱ algorithm was used to solve the optimal impeller design pa-rameters.The results show that under rated flow conditions,the optimized design of the impeller high-speed centrifugal pump increases the hydraulic efficiency by 6.23％compared to using the initial im-peller,while simultaneously reducing the required cavitation margin by 2.01％.Simultaneously,opti-mizing the integrated impeller can effectively suppress the low-pressure area near the suction side of the splitter blade inlet,and improve the flow field inside the impeller.Additionally,it can reduce the vo-lume of vapour and move the area with the highest vapour volume fraction.This indicates that the multi-objective optimization design method for integrated impellers proposed in this article is feasible.关键词
高速离心泵/一体式叶轮/优化设计/响应面法/NSGA-Ⅱ算法Key words
high-speed centrifugal pump/integrated impeller/optimization design/response surface methodology/NSGA-Ⅱ algorithm分类
农业工程引用本文复制引用
邓莎,赖喜德,陈小明,逯广平,刘升波..高速离心泵一体式叶轮多目标优化设计[J].排灌机械工程学报,2025,43(3):254-259,267,7.基金项目
四川省科技计划项目(2022JDZH001,2023ZHCG0031) （2022JDZH001,2023ZHCG0031）
