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Design and Experimental Study of Hydrostatic Thrust Air Foil Bearing

机译：静压推力翼型轴承的设计与试验研究

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摘要

Oil-free bearing technology has several advantages over conventional oil-lubricated bearings. These advantages include high-speed operation, reduced weight, and increased reliability. Consequently, oil-free technology is expected to replace conventional bearings in a variety of applications. However, many challenges need to be addressed for widespread adoption of oil-free technology such as lower load capacity during start/stop and issues with controlling temperature.;Thrust bearings, unlike their radial counterparts, are used for supporting axial loads and have become more important in recent years because of layout requirements other than double overhang configuration gaining consideration for specialized applications. Moreover, the requirements are demanding more extreme condition such as higher load capacity and temperature management.;To address the challenge of listed problems, a new hydrostatic type of the thrust air foil bearing with 154mm outer diameter is introduced. Pressurized air is injected through 32 orifices which enable not only higher load carrying capacity during start/stop but also enhanced thermal management because of cooling effect.;The test result of flat air bearing, damaged air foil bearing, and simple theoretical result will be shown and compared with the experimental results. The load capacity of the hydrostatic thrust foil bearing was found to be 1.5 kN (static), and it has an meaningful improvement compare to hydrodynamic and hydrostatic flat air bearing.;Due to the experiment, this approach of hydrostatic air foil thrust bearings can be used extensively in the turbomachinery area without using oil under heavy load and high-temperature situation.
机译：与常规的油润滑轴承相比，无油轴承技术具有多个优势。这些优势包括高速运行，减轻重量和提高可靠性。因此，无油技术有望在各种应用中替代传统轴承。但是，无油技术的广泛采用还需要解决许多挑战，例如启动/停止过程中的较低负载能力以及控制温度的问题。；与径向轴承不同，推力轴承用于支撑轴向载荷，并且已经变得越来越多。近年来，由于对布局的要求非常重要，除了特殊应用中需要考虑的双重悬垂结构以外，还需要考虑其他方面。此外，这些要求还要求更苛刻的条件，例如更高的负载能力和温度管理。；为了解决所列问题的挑战，推出了一种新型静压型推力铝箔轴承，其外径为154mm。压缩空气通过32个孔口注入，这不仅在启动/停止过程中具有更高的承载能力，而且由于冷却效果而增强了热管理。;将显示平坦空气轴承，损坏的空气箔轴承的测试结果以及简单的理论结果并与实验结果进行比较。静压推力箔轴承的负载能力为1.5 kN（静态），与静压和静压空气轴承相比，具有有意义的改进。在重载和高温情况下无需在机油中广泛用于涡轮机械领域。

著录项

  • 作者

    Song, Myongsok.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Mechanical engineering.
  • 学位 M.S.M.E.
  • 年度 2018
  • 页码 77 p.
  • 总页数 77
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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