航空发动机中介轴承打滑及生热特性  

Slip and Heat Generation Characteristics of Intermediate Bearings for Aero-Engines

作　　者：罗斌 杨芳芳 李炎军 刘昭林 王呈豪 LUO Bin;YANG Fangfang;LI Yanjun;LIU Zhaolin;WANG Chenghao(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China;School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]中国航发四川燃气涡轮研究院,成都610500 [2]河南科技大学机电工程学院,河南洛阳471003

出　　处：《轴承》2025年第4期35-45,共11页Bearing

基　　金：两机专项基础研究项目(HT-J2019-Ⅲ-0023-0067)。

摘　　要：为准确预测航空发动机中介轴承的生热特性,针对中介轴承的工作特点,考虑内外圈旋转方式、供油温度和供油流量对轴承生热的影响,对传统滚动轴承拟静力学模型进行修正,建立了中介轴承生热分析模型,并通过双转子轴承试验平台对模型进行试验验证。结果表明:中介轴承生热分析模型预测结果与试验结果的误差不超过15%;外圈转速绝对值相同时,内、外圈反向旋转轴承的打滑和生热率比内、外圈同向旋转轴承大得多;内、外圈反向旋转轴承存在一个径向载荷临界值,当径向载荷小于该值时,轴承的打滑及生热将变得十分严重;实际应用中,在保证轴承承载能力满足要求的前提下,可以通过适当减少滚子数目来降低轴承生热。To accurately predict the heat generation characteristics of intermediate bearings,aimed at the working characteristics of the bearings for aero-engines,the influence of rotation modes of inner and outer rings,oil supply temperature and oil supply flow rate on heat generation of the bearings is considered.The traditional quasi-static model of rolling bearings is modified,and an analysis model is established for heat generation of the bearings.The model is experimentally verified using a dual rotor bearing test platform.The results indicate that the error between predicted results from heat generation analysis model for the bearings and experimental results does not exceed 15%;when the absolute value of rotational speed of outer rings is the same,the slip and heat generation rate of the bearings with counter-rotating inner and outer rings are much larger than those of the bearings with co-rotating inner and outer rings;there exists a critical value of radial load for the bearings with counter-rotating inner and outer rings,when the radial load is less than this value,the slip and heat generation of the bearings become extremely severe;in practical applications,while ensuring that the load capacity of the bearings meets the requirements,the heat generation of the bearings can be reduced by appropriately reducing the number of rollers.

关 键 词：滚动轴承 圆柱滚子轴承 航空发动机 热分析 打滑 

分 类 号：TH133.33[机械工程—机械制造及自动化]