大型水轮发电机推力轴承热弹流润滑性能分析

Analysis of Thermoelastic Hydrodynamic Lubrication Performance of Thrust Bearings for Large Hydrogenerators

以巴氏合金瓦和弹性金属塑料瓦推力轴承为例 ,介绍了大型水轮发电机推力轴承热弹性流体动力润滑性能的有限元分析方法 .物理模型包括润滑油膜、推力轴承和镜板推力头 .采用 ADINA(T)程序计算水口巴氏合金瓦和三峡弹性金属塑料瓦推力轴承和镜板推力头的热弹性变形 ,并对轴承性能的计算结果和测量结果进行了对比分析 .结果表明 ,计算结果和实测结果吻合 .

The thermo elastic hydrodynamic (TEHD) lubrication performance of the thrust bearings with Babbitt layer and/or teflon layer of large hydrogenerators was investigated by means of finite element analysis. The physical model established takes into account the lubricating oil film, thrust bearing, runner and thrust head. The thermo elastic deformation (TED) of the thrust bearing and runner was analyzed based on ADINA(T) program. It has been found that the calculated results of the thrust bearings conform well to the measured ones.