摘要
以用于补偿高速高压圆弧齿轮泵不平衡径向力的滑动轴承为研究对象,在对其进行理论建模和分析的基础上,利用计算流体动力学软件Fluent分析相同工况下不同初始油膜厚度、进油口直径、进油口角度、轴向封油边宽度、油腔深度等结构参数对滑动轴承油膜特性的影响,并在此基础上对轴承结构参数进行了优化,最后通过实验进行验证。研究结果表明:初始油膜厚度和进油口角度对轴承温升影响显著,初始油膜厚度或进油口角度的增加使滑动轴承温升明显减小;轴向封油边的增加使轴承承载面增大,轴承承载力和温升也随之增大;进油口直径取1.7 mm和静压槽深度取1 mm时,使轴承温升达到最低;在负载压力15 MPa、转速6000 r/min工况下,与安装未优化滑动轴承的齿轮泵相比,安装优化后滑动轴承的齿轮泵温度降低5℃。
Taking the sliding bearing used to compensate unbalanced radial force of high speed and high pressure arc gear pump as the research object,based on theoretical modeling and analysis,Computational fluid dynamics software Fluent was used to analyze the influence of different initial oil film thickness,inlet diameter,inlet Angle,axial sealing edge width,oil cavity depth and other structural parameters on the oil film characteristics of sliding bearing under the same working conditions.On this basis,the bearing structural parameters were optimized,and finally verified by experiments.The results show that the initial oil film thickness and oil inlet Angle have a significant effect on the bearing temperature rise,and the increase of the initial oil film thickness or oil inlet Angle makes the temperature rise of the sliding bearing decrease obviously.The increase of axial sealing edge increases bearing surface,bearing capacity and temperature rise.When the diameter of the oil inlet is 1.7 mm and the depth of the hydrostatic groove is 1 mm,the temperature rise of the bearing is the lowest.Under the load pressure of 15 MPa and speed of 6000 r/min,the temperature rise of the gear pump with optimized sliding bearing is 5℃lower than that of the gear pump without optimized sliding bearing.
作者
董庆伟
李行
李阁强
朱景龙
DONG Qing-wei;LI Hang;LI Ge-qiang;ZHU Jing-long(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471000,China)
出处
《液压气动与密封》
2023年第6期71-77,共7页
Hydraulics Pneumatics & Seals
基金
河南省重点研发与推广专项(科技攻关)项目(202102210277)。
关键词
圆弧齿轮泵
滑动轴承
高速高压
计算流体动力学
油膜特性
arc gear pump
sliding bearing
high speed and high pressure
CFD
oil film characteristics
