深海小排量高速柱塞泵搅油损失分析  

Analysis of Churning Loss of the Small Displacement High-speed Piston Pump in Deep Sea

作　　者：闫有朋 李跃 李东林 赵中校 郭富航 YAN Youpeng;LI Yue;LI Donglin;ZHAO Zhongxiao;GUO Fuhang(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang,Henan 471003)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《液压与气动》2025年第4期31-38,共8页Chinese Hydraulics & Pneumatics

基　　金：国家重点研发计划(2022YFC2805702);国家自然科学基金(52475053)。

摘　　要：小排量高速柱塞泵具有工作压力高、功率密度大等优点,是深海装备的核心动力元件。不同于地面工况,在深海低温、高压环境下,油液黏度大幅增加,导致泵内高速旋转部件的搅油损失问题突出。在分析缸体搅油流场的基础上,建立了深海环境油液流变下泵搅油损失数学模型,分析了海深和转速对泵搅油损失的影响。结果表明,在不同转速下泵搅油损失呈三段式变化,在泵内各部件(轴承、缸体、齿轮、柱塞连杆)搅油损失分布中,轴承搅油流场贡献最大,缸体搅油流场贡献次之,其余部位影响较小。基于此,改进了泵支撑轴承结构,泵总的搅油损失下降了约11%。Small displacement high-speed piston pumps have the advantages of high working pressure and high power density,and are the core power components of deep-sea equipment.Unlike ground conditions,in the lowtemperature and high-pressure environment of deep sea,the viscosity of oil increases significantly,leading to prominent problems of churning loss in high-speed rotating components inside the pump.Based on the analysis of the churning flow field in the cylinder block,a mathematical model of pump churning loss under deep-sea oil rheology was established,and the influence of sea depth and speed on pump churning loss was analyzed.The results showed that the churning loss of the pump varied in three stages at different speeds.Among the churning loss distribution of various components(bearings,cylinder block,gears,piston connecting rods)inside the pump,the bearing churning flow field contributed the most,followed by the cylinder block churning flow field,and the other parts had a smaller impact.Based on this,the pump support bearing structure was improved,and the total churning loss of the pump was reduced by about 11%.

关 键 词：深海环境 高速柱塞泵 油液流变 搅油损失 

分 类 号：TH137[机械工程—机械制造及自动化]