为解决某电厂开槽椭圆瓦轴承在运行过程中存在温度过高的问题，考虑紊流、质量守恒边界等效应建立了轴承的热流体动力学润滑分析模型，采用有限元法求解了轴承性能，对比得出了四种不同开槽方式的椭圆瓦轴承对润滑性能(膜厚、膜压、膜温、功耗和流量等)的影响规律。结果表明：相对于上下瓦均不开槽（光滑表面）轴承，下瓦开中心槽导致油膜承载面积减小，油膜厚度大幅降低，油膜压力和油膜温度均显著升高；上瓦开槽对轴承性能影响较小，整体上降低了摩擦功耗，但略微增加油膜温度。

In order to solve the problem of high temperature in the operation of slotted oval bush bearing in a power plant,the thermal hydrodynamic lubrication analysis model of the bearing is established by considering the effects of turbulence and mass conservation boundary.The bearing performance is determined by using finite element method and the influence law of four different slotted oval bush bearings on the lubrication performance (film thickness,film pressure,film temperature,power consumption,flow rate,etc.) is obtained.The results show that compared with smooth surface bearing,the bearing area of oil film decreases,the thickness of oil film decreases greatly,and the pressure and temperature of oil film increase significantly; the groove of upper bearing has little effect on the bearing performance,which reduces the friction power consumption as a whole,but slightly increases the temperature of oil film.

TH133.3

国家重点研发计划（2018YFB2001505）