排灌机械工程学报2025，Vol.43Issue(5)：448-454,7.DOI:10.3969/j.issn.1674-8530.23.0203
不同工况下两级双吸卧式凝结泵的受力特性分析
Analysis of force characteristics of two-stage double-suction horizontal condensate pump under different operating conditions
摘要
Abstract
This study systematically investigated the force characteristics of a large two-stage double-suction horizontal condensate pump under different operating conditions by integrating the operational requirements of a specific power plant with a method that encompasses optimized design,three-dimen-sional flow field simulation,and experimental validation.Firstly,the reliability of the numerical analy-sis method and the accuracy of the optimization design parameters were verified through comparative as-sessment of numerical calculations and experimental tests.Secondly,unsteady numerical simulations were conducted to analyze the flow field variations and force characteristics of the two-stage double-suction horizontal condensate pump under normal,transient,and startup operating conditions.The findings indicate that the point of minimum pressure within the flow passage of the first-stage impeller is situated at the rear side of the blade inlet,and the region of low pressure is notably confined.This indi-cates that the impeller exhibits strong cavitation resistance.The axial and radial forces of the primary and secondary impellers were calculated and analyzed under transient and startup conditions.It is found that the maximum axial and radial forces of the primary impeller are 3 148.546 N and 4 642.354 N,respectively.In comparison,the maximum axial forces and maximum radial force of the secondary impeller are 2 132.887 N and 5 906.412 N,respectively.All recorded force values meet the design re-quirements,indicating that the condensate pump is capable of maintaining safe and stable operation re-quirements under various working conditions,thereby achieve the expected design objectives.关键词
两级双吸泵/瞬态工况/启动工况/径向力/轴向力Key words
two-stage double-suction pumps/transient operating conditions/startup conditions/radial forces/axial forces分类
农业工程引用本文复制引用
刘伟,高瑞,王鹏..不同工况下两级双吸卧式凝结泵的受力特性分析[J].排灌机械工程学报,2025,43(5):448-454,7.基金项目
国家自然科学基金资助项目(51976079) （51976079）
