Analysis of oil film characteristics of planetary gear plain bearing for wind turbine gearbox
SONG Yu-long
WANG Jian-mei
REN Lu
Abstract：With the development of wind turbines towards large megawatt models and deep-sea wind farms,sliding bearings have greater advantages than rolling bearings in wind turbine gearboxes,and the"roll-slip re-placement"of wind turbine bearings has become a new challenge faced by the wind power industry.In this paper,the CFD simulation method is used to simulate the oil film bearing characteristics of the first-stage plane-tary gear sliding bearing for a large megawatt wind turbine gearbox.The pressure distribution of the sliding bearing oil film was studied,the bearing capacity of the oil film was calculated by integration,and the influence law of oil inlet pressure and bearing speed on the oil film bearing capacity of the first-class planetary gear sliding bearing for the wind turbine gearbox was obtained.The results show that the influence of oil inlet pressure on the maximum of oil film pressure and bearing capacity is 0.2%,the maximum value of the influence of bearing speed on oil film pressure and bearing capacity is 20%,so the sensitivity of oil film pressure and bearing capacity to bearing speed is more obvious than that of oil inlet pressure,which provides a reference for the de-sign and calculation of planetary gear sliding bearings for wind turbine gearboxes.
Keywords：wind turbinesliding bearingplanetary gearsCFDoil inlet pressurerotational speed
Publication Date：2023-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 68-73 )