低温升功能保持架轴承流场特性分析  

Analysis of Flow Field Characteristics of Low Temperature Rise Functional Cage Bearing

作　　者：韦春辉 吴维[1] 李铁 杨浩亮[3] 苑士华[1] WEI Chunhui;WU Wei;LI Tie;YANG Haoliang;YUAN Shihua(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081;Yangtze Delta Region Academy of Beijing Institute of Technology,Jiaxing 314019;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学长三角研究院,嘉兴314019 [3]洛阳轴承研究所有限公司,洛阳471039

出　　处：《机械工程学报》2024年第24期236-243,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(51975045)。

摘　　要：为提高轴承在高转速工况下的传热性能,降低轴承的温度,提出一种具有低温升性能功能保持架。通过建立的轴承数值计算模型,揭示功能保持架对轴承腔气相流场的调控作用。基于场协同理论探究在高速工况下功能保持架对轴承温度场与换热性的影响。对比分析传统保持架和功能保持架轴承在不同转速下的油液分布以及流动特性。最后,通过轴承温升测试系统,对比传统保持架和功能保持架轴承在不同转速下的温升特性。研究结果表明,功能保持架调控轴承腔内的气相流场,增加流入轴承腔的气体流量,提高轴承腔的换热性能。相比传统保持架,功能保持架使更多的油液流经轴承腔,具有低温升性能,最大温度降低了2.2℃。此研究为设计具有降低轴承温升功能的保持架提供新的思路。In order to improve the lubrication performance of bearing under high speed conditions and reduce the temperature of bearing,a functional cage with low temperature characteristic has been proposed.The established numerical calculation model of the bearing reveals the regulatory effect of the functional cage on the gas phase flow field in the bearing cavity.Based on the field synergy theory,the influence of functional cage on the temperature field and heat transfer performance of bearing under high speed conditions is explored.A comparative analysis is conducted on the oil distribution and flow characteristics of traditional and functional cage bearings at different rotational speeds.Finally,through a bearing temperature testing system,the temperature rise characteristics of traditional and functional cage bearings are compared at different speeds.The research results indicate that the functional cage regulates the gas phase flow field in the bearing cavity,increases the gas flow into the bearing cavity,and improves the heat transfer performance of the bearing cavity.Compared to traditional cage,functional cage allows more oil to flow through the bearing cavity,providing low temperature rise performance and a maximum temperature reduction of 2.2℃.This study provides a new idea for designing cage with the function of reducing bearing temperature rise.

关 键 词：功能保持架 高转速轴承 低温升 流场特性 强化传热 

分 类 号：TH133[机械工程—机械制造及自动化]