国外文献 > 1.轴承 > 1. 基础理论与机制 > 摩擦与润滑
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| 标 题： |
100mm diameter self-obtained solid/powder lubricated auxiliary bearing operated at 30,000 rpm
直径100毫米、自润滑固体/粉末润滑的辅助轴承，转速30,000转/分钟 |
| 作 者： |
R. G. Kaur
H. Heshmat |
| 关键词： |
Solid lubricants [固体润滑剂]
Molybdenum disulfide [ 二硫化钼]
Friction [ 摩擦]
Solid lubricated [ 固体润滑]
Hydrodynamic [ 水动力学]
Solid lubrication [ 固体润滑]
Powder lubrication [ 粉末润滑]
Wear [ 穿戴]
Solid lubricated [ 固体润滑]
Quasi-hydrodynamic powder lubrication [ 准流体动力粉末润滑] |
| 出版年： |
2002 |
| 期刊名： |
Lubrication Engineering.
润滑工程。 |
| 年卷期： |
2002, vol.58, no.6 |
| 摘 要： |
A major breakthrough development of a self contained solid/powder lubricated auxiliary hydrodynamic bearing has recently been achieved successfully This bearing was operated at speeds to 30,000 rpm, equivalent to three million DN, and loads to 445 N (100 lb). Uniqueness of this bearing lies in its application of dry particulate powders to provide a long life, low power loss backup bearing. Impetus behind this development is the necessity for high performance auxiliary bearing systems in magnetic bearing supported rotors. Potential applications include ground and space based Flywheel Energy Storage Systems, Auxiliary and Integrated Power Units and Gas Turbine engines. The two main technology components of this bearing are the pelletized powder lubricant delivery system and the powder lubricated journal bearing design. Using established criteria, powder materials suitable for the expected operating environments were reviewed. The selected powder lubricant properties and the design tool were used to fabricate the powder pellets and design the 100 mm diameter powder lubricated bearing which was tested in a magnetically suspended rotor bearing test rig. Tests conducted on this powder lubricated bearing included short duration testing at low speeds, transient shock testing (simulating magnetic bearing failure), high speed testing and lubricant starvation testing. The acquired results spanned the range of the expected operating conditions, including lubricant feed rate, bearing temperatures and operational dynamic performance, clearly validating the lubricant delivery system and the overall powder lubricated bearing design analysis.
一种自成一体的固体/粉末润滑辅助流体动力轴承近期已取得重大突破。该轴承可在高达30,000转/分钟（相当于三百万DN）的转速下运行，承载载荷可达445牛顿（100磅）。该轴承的独特之处在于采用干式颗粒粉末，实现长寿命、低功耗的备用轴承功能。这一技术开发的背景是磁悬浮转子系统对高性能辅助轴承系统的需求。其潜在应用包括地面和空间用飞轮储能系统、辅助及集成动力装置以及燃气轮机发动机。该轴承的两大核心技术组成部分为颗粒状粉末润滑剂输送系统和粉末润滑轴瓦设计。通过采用既定标准，对适用于预期工作环境的粉末材料进行了评估。利用选定的粉末润滑剂性能和设计工具，制备了粉末颗粒，并设计出直径100毫米的粉末润滑轴承，最终在磁悬浮转子轴承测试台上进行了测试。对这种粉末润滑轴承进行的测试包括低速短时测试、瞬态冲击测试（模拟磁悬浮轴承失效）、高速测试以及润滑剂耗尽测试。所获得的结果覆盖了预期运行条件的范围，包括润滑剂供给速率、轴承温度和动态运行性能，充分验证了润滑剂输送系统及整体粉末润滑轴承的设计分析。 |
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