摘要
对空间紫外光谱仪中转动部件,即光学调制器系统支撑轴承的润滑及密封进行设计和研究。在真空环境下(10-3Pa),采用固体润滑和油润滑2种润滑方式进行轴承寿命试验。结果表明,当轴承采用MoS2固体膜润滑时,轴承转动到108转量级后,轴承动态摩擦力矩增大,转速急剧下降;采用扫描电子显微镜和能量色散谱(EDS)分析轴承工作表面,验证轴承工作表面有转移膜的形成。当轴承采用油润滑时,对轴承的润滑状态、机械密封结构及润滑油的泄漏量进行设计和计算表明,用非接触的组合式机械密封机构,能够降低油耗,减少润滑油对光学系统的污染,提高仪器的性能和指标,从而可以实现空间转动部件长时间工作的要求。
Tbe design of lubrication and sealing was studied for bearings in the optical modulator which is belonged to the moving parts of the UV spectrometer in space, the life testing for bearings in the vacuum condition （ 10^-3 Pa）was made by adopting solid lubrication and oil lubrication. The results show when adopted MoS2 solid films to lubricate in life testing, the bearings move about 10^8 rotations magnitude, the dynamic friction torque of the bearings is increased and the rotation speed is decreased, the transferred film on the bearing face can be proved by using the scanning electronic microscope and energy dispersion spectrum （EDS） analysis. When adopted oil lubrication, according to the designing and calculation for the lubrication state, the mechanical sealing structure and leaking quantity, it proves that the oil consumption can be reduced, and the contamination of optical system can be decreased, the performance and data of instrument is advanced so that the long life demand for the moving parts in space can be met.
出处
《润滑与密封》
CAS
CSCD
北大核心
2007年第4期136-139,共4页
Lubrication Engineering
关键词
真空
光学调制器
密封
泄漏量
流导
vacuum
optical modulator
sealing
leaking quantity
conductance
