Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery

doi:10.7652/xjtuxb202005006

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Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery

更新时间：2025-07-09

- Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery
- Vol. 54, Issue 5, Pages: 40-45(2020)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202005006
  CLC： TH137.52
- Online First：10 May 2020，
  
  Published：2020
- 稿件说明：
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Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery[J]. 2020, 54(5): 40-45.
DOI：

Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery[J]. 2020, 54(5): 40-45. DOI： 10.7652/xjtuxb202005006.

摘要

为研究悬臂型箔片轴承的实际工作性能及其在高速透平机械中的应用效果

对悬臂型箔片轴承开展了实验研究。首先

在径向轴承性能实验台上进行了悬臂箔片径向轴承的静态加载、启动摩擦力矩和运行阻力矩测试实验

获得了不同箔片厚度和轴承载荷下轴承库仑阻尼和阻力矩的变化趋势。随后

将悬臂箔片径向轴承与止推轴承同时应用在主轴直径为25 mm的高速透平机械中

在高速透平机械性能实验台上开展了轴承-转子系统的瞬态升降速与高速稳定运行实验

对全动压悬臂箔片轴承支撑转子的瞬态特性与稳定性进行了分析。实验结果表明:悬臂箔片径向轴承的启动摩擦力矩(0.6×10

-2

～1.8×10

-2

N·m)与运行阻力矩(0.25×10

-2

～0.5×10

-2

N·m)较小; 在全动压悬臂箔片径向轴承和止推轴承支撑下高速透平机械转速能够达到93.9×10

r/min; 轴承-转子系统在升降速和高速运行过程中均具有较小的主频振幅(

6 μm)和低频涡动振幅(

0.5 μm)

轴心轨迹清晰

表现出良好的稳定性。所开展的实验研究验证了悬臂箔片轴承在高速透平机械上应用的可行性。

Abstract

In order to evaluate the operation performance of the multi-leaf foil bearings and their application potential in high-speed turbo-machinery

an experimental research of multi-leaf foil bearings was conducted. At first

static and transient tests of the multi-leaf journal bearings with different foil thickness were performed on the journal bearing test rig

and the load-deflection

start-up and operating friction torque characteristics

as well as the bearing Coulomb friction and friction torque

under different foil thickness and bearing loads were obtained. Afterwards

both multi-leaf foil journal and thrust bearing were applied in the high-speed turbo-machinery with a rotor diameter of 25 mm. The transient speed-up

high speed

and speed-down experiments of the rotor-bearing system were conducted on the high-speed turbo-machinery test rig. The transient characteristics and stability of the rotor with the support of the aerodynamic multi-leaf foil bearings were analy-ed. The experime

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references

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