摘要
在线接触热弹流润滑的基础上,考虑黏压效应,对风电行星轮系齿轮副进行热弹流润滑数值分析,并采用热弹流润滑数值方法和ISO/TS 6336-22计算了齿轮副的最小油膜厚度、安全系数和闪温温度,并比较各主要啮合点的压力和油膜厚度分布。结果表明:与使用ISO/TS 6336-22计算的结果对比,采用热弹流润滑理论计算的油膜更厚,但安全系数更小;在风电齿轮副热弹流润滑分析时应考虑压力对黏度的影响;风电主齿轮箱齿面因啮合产生油膜厚度随温度增加会迅速降低,最小油膜厚度会随载荷增加迅速减小,因此风电齿轮箱要保证足够的润滑,并尽量避免在高于额定载荷下长时间持续运行。
The computation of minimum film thickness,local flash temperatures and safety factors against micropitting of gears for wind turbines was carried out by ISO/TS 6336-22 and thermoelastohydrodynamic(TEHD) analysis method with the consideration of the effect of pressure on viscosity.The lubricant film pressure distributions and film shapes at main contact points were compared.The results show that the minimum film thickness calculated by TEHD contact theory is higher than that calculated by ISO/TS 6336-22,but the safety factors against micropitting is lower.The effect of pressure on viscosity should be considered in the TEHD analysis of the gears for wind turbines.The film thickness on the meshing surface of the main gearbox of wind turbines will decrease rapidly with the increase of temperature and the minimum film thickness will decrease rapidly with the increase of load,therefore,a adequate lubrication should be ensured for the gearbox of wind turbines,and the gearbox should avoid long-term continuous operation above the rated load.
作者
熊永强
何爱民
XIONG Yongqiang;HE Aimin(Nanjing High Speed Gear Manufacturing Co.,Ltd.,Nanjing Jiangsu 211100,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2020年第5期108-113,118,共7页
Lubrication Engineering
基金
国家重点研发计划重点专项(2018YFB2001605).
关键词
热弹流润滑
微点蚀
齿轮
黏压效应
thermalelastohydrodynamic(TEHD)
micropitting
gear
viscosity-pressure effect
作者简介
熊永强(1986-),男,硕士,高级工程师,从事风电齿轮箱设计及其相关的仿真分析及优化,齿轮轴承的热弹流润滑研究.E-mail:xiong-yongqiang@163.com.
