基于能量交换的在轨加注旋涡泵水力特性研究  

Investigation on hydraulic characteristics of the regenerative flow pump in on-orbit filling based on energy exchange

作　　者：李倩倩 陆怡[1] 常爱莲 倪祖国 郭春林 LI Qianqian;LU Yi;CHANG Ailian;NI Zuguo;GUO Chunlin(School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou 213164,China;Jiangsu Province Engineering Research Center of High-Level Energy and Power Equipment,Changzhou 213164,China;Ningbo Rocket Automobile Rocket Parts Co.,Ltd.,Ningbo 315300,China)

机构地区：[1]常州大学机械与轨道交通学院,江苏常州213164 [2]江苏省能源动力高端装备工程研究中心,江苏常州213164 [3]宁波洛卡特汽车零部件有限公司,浙江宁波315300

出　　处：《常州大学学报（自然科学版）》2024年第5期40-51,共12页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(52206041);江苏省能源动力高端装备工程研究中心开放课题基金资助项目(JSNYDL-202207);常州大学科研启动基金资助项目(ZMF21020356)。

摘　　要：传统的在轨加注容积泵因体积大、可靠性差等难以满足在轨加注对轻量化、强可靠性加注泵的迫切需求。为此,提出具有小流量、高扬程特点的旋涡泵结构,探究其处于在轨加注环境下性能的变化规律,并结合内部流场进一步揭示其能量交换机制。结果表明,纵向旋涡引导旋涡泵内流体的循环流动来完成能量交换过程,且在不同因素作用下使旋涡泵性能呈现不同的变化趋势。随着转速的增大、输送介质密度的减小、动力黏度的增大以及含气量的减小,旋涡泵的压力增长速度加快,泵壳流道和叶轮流域间交换流动更加剧烈,纵向旋涡的强度增大,泵的做功能力增强,旋涡泵的扬程增大。但同时由于耗散损失的存在,水力效率的变化趋势则与之相反。Owing to the large volume and poor reliability,the traditional positive displacement pump in on-orbit filling is hard to satisfy the requirement of light weight and strong reliability for circulating filling pump.Therefore,the regenerative flow pump(RFP)structure,which possesses the characteristics of low flow rate and high head,was proposed to explore the variation rules of RFP s hydraulic performance under the on-orbit filling environment,further to reveal the energy exchange mechanism in combination with the internal flow field.The results illustrate that,the longitudinal vortex guides the circulation flow inside RFP to complete energy exchange process,making the RFP s performance present different variation tendency under different factors.With the rotating speed increasing,the density of the conveying medium decreasing,the dynamic viscosity of the conveying medium increasing,and the air content decreasing,the pressure growth rate of RFP was accelerated.The exchange flow between the pump channel and impeller is more intense,the intensity of the longitudinal vortex is stronger,the work capacity of the pump is enhanced,and the RFP s head is increased.However,due to the existence of the dissipation loss,the changing trend of hydraulic efficiency is opposite.

关 键 词：旋涡泵 水力性能 能量交换 纵向旋涡 在轨加注 

分 类 号：TH314[机械工程—机械制造及自动化]