润滑方式对球轴承润滑性能影响的数值研究

推进技术 ›› 2019, Vol. 40 ›› Issue (4): 892-901.

润滑方式对球轴承润滑性能影响的数值研究

朱卫兵¹,张小彬¹,鲁勇帅¹,王冬兰²

哈尔滨工程大学航天与建筑工程学院，黑龙江哈尔滨 150001,哈尔滨工程大学航天与建筑工程学院，黑龙江哈尔滨 150001,哈尔滨工程大学航天与建筑工程学院，黑龙江哈尔滨 150001,北京动力机械研究所，北京 100074

发布日期:2021-08-15
基金资助:
国家自然科学基金(51709227；11605136)。

关键词:球轴承；喷油润滑；环下润滑；两相流场；数值模拟

College of Aerospace and Civil Engineering，Harbin Engineering University，Harbin 150001，China,College of Aerospace and Civil Engineering，Harbin Engineering University，Harbin 150001，China,College of Aerospace and Civil Engineering，Harbin Engineering University，Harbin 150001，China and Beijing Power Machinery Institute，Beijing 100074，China

Published:2021-08-15

摘要/Abstract

摘要： 为合理选择高速球轴承润滑方案，优化润滑系统参数，针对SKF7210角接触球轴承建立了喷油润滑与环下润滑计算模型，基于VOF数值方法，研究了两种润滑方式下轴承内油气两相流场和内外环温度场。研究结果表明:相同工况下，环下润滑轴承内油气分布较喷油润滑更为均匀；转速增加两种润滑方式润滑效果均下降，但对环下润滑影响更大，当转速超过18kr/min时 (Q=3L/min， F=5kN)，环下润滑轴承内油体积分数将低于喷射润滑；供油量增加可改善润滑效果，尤其对环下润滑，当转速大于10kr/min时，环下润滑轴承内油体积分数相对喷油润滑将大幅提高；载荷增加会使轴承内油体积分数减小。结论:当转速和载荷较低时，可使用结构简单的喷油润滑；当转速和载荷较高时，使用环下润滑较为有利，但需保证供油量维持在较高水平。

关键词: 球轴承；喷油润滑；环下润滑；两相流场；数值模拟

Abstract: In order to choose the lubrication scheme of high speed ball bearing reasonably，and optimize the lubrication system parameters，the calculation models of oil-jet lubrication and under-race lubrication for SKF7210 angular contact ball bearing were established. Based on the VOF method，the internal oil-gas two phase flow and the inner-outer ring temperature with the two different lubrication methods were studied. The results show that under the same working condition，the oil-gas distribution in the under-race lubrication bearing is more uniform than that of the oil-jet lubricating bearing. The lubrication effect of both lubrication modes decreases with the increase of rotating speed，and the effect on the under-race lubrication is greater. When the speed exceeds 18kr/min(Q=3L/min，F=5kN)，the oil volume fraction in the bearing of the under-race lubrication will be lower than that of the oil-jet lubrication. The increase of oil supply can improve the lubrication effect，especially for the under-race lubrication. When the speed is greater than 10kr/min，the oil volume fraction in the bearing of under-race lubriction will be greatly improved relative to the oil-jet lubrication. Increasing the load will reduce the internal oil volume fraction of the bearing. Conclusion: when the speed and the load are low，a simple oil-jet lubrication can be used，when the speed and the load are high，it is advantageous to use the under-race lubrication，but the oil supply should be maintained at a high level.

Key words: Ball bearing；Oil-jet lubrication；Under-race lubrication；Two phase flow field；Numerical simulation

朱卫兵,张小彬,鲁勇帅,王冬兰. 润滑方式对球轴承润滑性能影响的数值研究[J]. 推进技术, 2019, 40(4): 892-901.

ZHU Wei-bing¹,ZHANG Xiao-bin¹,LU Yong-shuai¹,WANG Dong-lan². 关键词:球轴承；喷油润滑；环下润滑；两相流场；数值模拟[J]. Journal of Propulsion Technology, 2019, 40(4): 892-901.

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