Development of Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium

超细多孔介质蒸发水有效稳定混合气体轴承的研制

• 批准号: 15360108
• 负责人: YOSHIDA Hideo
• 金额: $ 8.13万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360108/
• 关键词: Hybrid Gas Bearing; Water Evaporation; Porous Medium; Micro Gas Turbine

A hybrid gas bearing effectively stabilized by water evaporation from ultra-fine porous medium is proposed and its basic characteristics are clarified by numerical simulation and experiment. The proposed bearing aims to be applied to MGT (Micro Gas Turbine) and has mainly three advantages suitable for application to MGT. The first is the stability improved by water evaporation from ultra-fine porous medium. The second is the effective lubrication by liquid water at the start and stop of the journal rotation. The third is the cooling effect on the high-temperature journal due to water evaporation. Numerical analysis revealed that the hybrid gas bearing is more stable than a conventional gas bearing. The characteristics of the start-up, liquid lubrication and transition state were experimentally examined with heating of journal, and finally the vapor lubrication was achieved.

提出了一种利用超细多孔介质水分蒸发有效稳定混合含气的方法，并通过数值模拟和实验阐明了其基本特征。所提出的轴承以应用于微型燃气轮机为目标，主要具有适合于微型燃气轮机应用的三个优点。一是利用超细多孔介质的水分蒸发提高了稳定性。其次是在轴颈旋转的开始和停止时由液态水进行有效润滑。三是水分蒸发对高温轴颈的冷却作用。数值分析表明，混合气体轴承比传统气体轴承更稳定。通过对轴颈的加热，实验考察了其启动、液体润滑和过渡状态的特性，最终实现了蒸汽润滑。

项目成果

水蒸発による静圧効果が付加された超微細多孔質金属製ハイブリッド気体軸受

超细多孔金属混合气体轴承，由于水蒸发而增加静压效应

• 期刊: 日本機械学会論文集B編 (投稿中)
• 作者: 吉田英生;他
• 通讯作者: 他

Hideo YOSHIDA, et al.: "Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium"Proceedings of the International Conference on Power engineering-03(ICOPE-03). 3. 79-84 (2003)

Hideo YOSHIDA 等人：“Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium”国际电力工程会议论文集-03(ICOPE-03)。

水蒸発による静圧効果が付加された超微細多孔質体ハイブリッド気体軸受

超细多孔混合气体轴承，由于水蒸发而增加静压效应

• 发表时间: 2006
• 期刊: 第43回日本伝熱シンポジウム講演論文集 1
• 作者: 吉田英生;他
• 通讯作者: 他

Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium

通过超细多孔介质中的水蒸发有效稳定混合气体轴承

• 发表时间: 2006
• 期刊: Proc. of The Seventeenth International Symposium on Transport Phenomena (submitted)
• 作者: Hideo YOSHIDA;et al.
• 通讯作者: et al.

吉田英生, 他: "超微細多孔質表面からの水蒸発を伴うハイブリッド気体軸受"第40回日本電熱シンポジウム講演論文集. 1. 171-172 (2003)

Hideo Yoshida 等人：“超细多孔表面水蒸发的混合气体轴承”第 40 届日本电热研讨会论文集。1. 171-172 (2003)。