油孔数目对浮环轴承润滑静特性的影响  

Effect of the Number of Oil Holes on Lubrication Characteristics of Floating Ring Bearing

作　　者：康洋 邱子桢[2,3] 范其明 宋中越[1,2] 师占群 KANG Yang;QIU Zizhen;FAN Qiming;SONG Zhongyue;SHI Zhanqun(Intelligent Manufacturing College,Tianjin Sino-German University of Applied Sciences,Tianjin 300350,China;School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China;CATARC New Energy Vehicle Test Center(Tianjin)Co.,Ltd.,Tianjin 300300,China;School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan Hubei 430074,China)

机构地区：[1]天津中德应用技术大学智能与制造学院,天津300350 [2]河北工业大学机械工程学院,天津300130 [3]中汽研新能源汽车检验中心(天津)有限公司,天津300300 [4]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《润滑与密封》2023年第9期83-90,共8页Lubrication Engineering

基　　金：国家自然科学基金(51875166);恒拉力系统飞车保护关键技术研究横向项目(112021-005);天津市教委科研计划项目(2022KJ138)。

摘　　要：以浮环轴承为研究对象,基于多相流理论建立其润滑有限元模型,推导摩擦功耗、内外油膜与所接触的固体元件的温升的解析表达式;利用FLUENT求解器与其自定义函数接口(UDF)对模型进行仿真计算;综合考虑试验条件的局限性,拓展在仿真计算中的轴颈角速度范围,进一步分析宽域润滑工况下浮动环均布的油孔数目对摩擦功耗、温升、浮动环转速、端泄流量等润滑静特性参数的影响。结果表明:浮动环油孔数目的增加会在一定程度上增大轴承内间隙润滑油的注入量;浮动环油孔数目越多,端泄温升越小,内外间隙变形越小,浮动环转速越快;浮动环油孔数目对内外油膜的摩擦功耗和油膜变化率的影响较小,对浮动环转速和内外油膜的端泄流量的影响较大。该研究为浮环轴承的设计和静特性分析提供了可靠的实验依据。A finite element model was developed for the lubrication of the floating ring bearing based on multi-phase flow theory.The analytical expressions of friction power loss,the temperature rise of both inner and outer films and the solid parts were derived.The model was simulated using the FLUENT solver and its UDF interface.Considering the limitations of experimental conditions comprehensively,the range of journal angular velocity in simulation calculations was expand,and the effects of the number of oil holes distributed on the ring on the static lubricating characteristic parameters,such as friction power loss,temperature rise,speed of ring,and side leakage,were analyzed.It is concluded that increasing the number of oil holes distributed on the ring can improve the oil supply into the inner film to a certain degree.The more the number of oil holes in the floating ring,the smaller the temperature rise of the end leakage,the smaller the deformation of the inner and outer gaps,the faster the floating ring speed.The number of oil holes in the floating ring has a smaller impact on the friction loss and change rate of the inner and outer oil films,but a greater impact on the rotating speed of the floating ring and the side leakage of inner and outer oil film.The research provides a reliable experimental basis for the design and static characteristic analysis of the floating ring bearing.

关 键 词：浮环轴承 多相流 油孔数量 静特性参数 

分 类 号：TH117.1[机械工程—机械设计及理论]