热效应影响下浮环轴承润滑静特性研究  

An Investigation on Static Lubricating Characteristics of Floating Ring Bearing Considering Thermal Effects

作　　者：师占群[1] 康洋[1] 王军事 张浩[1] 甄冬[1] SHI Zhanqun;KANG Yang;WANG Junshi;ZHANG Hao;ZHEN Dong(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学机械工程学院,天津300130

出　　处：《润滑与密封》2019年第1期36-41,69,共7页Lubrication Engineering

基　　金：国家自然科学基金项目(51605133; 51705127);天津市自然科学基金(13JCYBJC41500);河北省科技计划项目国际合作专项(17394303);河北省高层次人才资助项目(E2014100015)

摘　　要：建立计入热效应的浮环轴承流体动压润滑模型,利用数值差分法联立求解雷诺方程,进而求解浮环轴承端泄流量;通过与实验数据的对比,验证所建模型的正确性;考虑浮环受热膨胀变形的影响,研究供油温度对摩擦功耗、温升、浮动环转速、端泄流量等浮环轴承润滑静特性参数的影响。结果表明:提高润滑油供油温度会明显提升浮动环旋转速度,增大轴承内间隙的供油量,减小内外油膜摩擦功耗和端泄温升;端泄温升随轴颈转速的升高而增大,温升随轴颈转速变化的幅度在采用较低温度的润滑油时表现得更为剧烈。A fluid dynamic pressure lubricating model of floating ring bearing considering thermal effects was established.The Reynolds equation was solved by the numerical difference method,and the side leakage of the floating ring bearing was solved.The simulation results was compared with the experimental data,the correctness of the model established was verified.The effects of the supply temperature on the static lubricating characteristic parameters,such as friction power loss,temperature rise,speed of ring,side leakage,were investigated with the influences of floating ring heating expansion deformation being taken into account.The results show that increasing supply temperature can increase the rotational speed of the floating ring significantly,increase the amount of oil supply to the inner oil film,reduce the friction power loss of the inner and outer oil films,and reduce the temperature of side leakage.The temperature of side leakage is increased with the increasing of the journal speed,and the variation of the temperature rise of side leakage with the the journal speed is more intense when supplying the lower temperature lubricating oil.

关 键 词：浮环轴承 热效应 端泄流量 热弹性变形 静特性 

分 类 号：TH117.1[机械工程—机械设计及理论]