流体机械2025，Vol.53Issue(3)：44-51,8.DOI:10.3969/j.issn.1005-0329.2025.03.006
无轴式磁悬浮离心泵水动力性能研究
Study on hydrodynamic performance of shaftless magnetic suspension centrifugal pump
摘要
Abstract
In order to achieve stable operation of a shaftless magnetic suspension centrifugal pump,this study investigates the hydrodynamic forces acting on the suspended rotor through numerical simulations and experimental validation.The internal flow field was analyzed under varying inlet flow rates,focusing on temporal variations of radial and axial forces.Additionally,the effects of valve plate height and rotor inlet diameter on rotor forces were examined.Results demonstrate that at 7 000 r/min with flow rates below 43.3 L/min,a stable vortex core forms at the rotor center accompanied by uniform low-pressure distribution,yielding periodic hydraulic excitation forces with amplitude stability.At 75.0 L/min,vortex breakdown induces chaotic low-pressure fluctuations and irregular high-amplitude force oscillations.Valve plate height negligibly affects radial forces but significantly influences axial forces,showing a 20 N reduction per 1 mm height increase at 65.0 L/min.Although rotor inlet diameter minimally impacts force characteristics,the D+1 configuration improves efficiency by 2.1%than D configuration at high flow rate of 65.0 L/min.These findings provide critical guidelines for optimizing pump geometry to minimize rotor loads and enhance hydraulic performance.关键词
磁悬浮离心泵/入口流量/阀片高度/轴向力/涡核Key words
magnetic suspension centrifugal pump/inlet flow rate/valve plate height/axial force/vortex core分类
机械制造引用本文复制引用
刁伟成,陈肇麟,王贝易,丁强,孙涛..无轴式磁悬浮离心泵水动力性能研究[J].流体机械,2025,53(3):44-51,8.基金项目
中央高校基本科研业务费专项资金资助项目(NS2023006) （NS2023006）
国家自然科学基金项目(12032011) （12032011）
国家自然科学基金青年科学基金项目(12002161) （12002161）
