[1]郭雨,赖天伟,赵琪,等.悬臂型箔片轴承应用于高速透平的实验研究[J].西安交通大学学报,2020,54(05):040-45.[doi:10.7652/xjtuxb202005006]
 GUO Yu,LAI Tianwei,ZHAO Qi,et al.Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery[J].Journal of Xi'an Jiaotong University,2020,54(05):040-45.[doi:10.7652/xjtuxb202005006]
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悬臂型箔片轴承应用于高速透平的实验研究
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《西安交通大学学报》[ISSN:0253-987X/CN:61-1069/T]

卷:
54
期数:
2020年第05期
页码:
040-45
栏目:
出版日期:
2020-05-10

文章信息/Info

Title:
Experimental Study of Multi-Leaf Foil Bearing in High-Speed Turbo-Machinery
文章编号:
0253-987X(2020)05-0040-06
作者:
郭雨 赖天伟 赵琪 初阳 陈双涛 侯予
西安交通大学能源与动力工程学院, 710049, 西安
Author(s):
GUO Yu LAI Tianwei ZHAO Qi CHU Yang CHEN Shuangtao HOU Yu
School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
关键词:
透平机械 悬臂箔片轴承 稳定性
Keywords:
turbo-machinery multi-leaf foil bearing stability
分类号:
TH137.52
DOI:
10.7652/xjtuxb202005006
文献标志码:
A
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93.9×103 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 analyzed. The experimental results indicate that: the start-up torque(0.6×10-2- 1.8×10-2 N·m)and steady operation frictional torque(0.25×10-2- 0.5×10-2 N·m)of the multi-leaf foil journal bearing is relative small; the maximum rotor speed of the turbo-machinery reaches 93.9×103 r/min under the support of the aerodynamic multi-leaf foil bearings; small main frequency vibration amplitudes(<6 μm)and low-frequency swirling vibration amplitudes(<0.5 μm), as well as clear rotor orbit, were observed in all the transient speed-up, high speed and speed-down processes, showing a good stability. The experimental research provides the feasibility for the application of multi-leaf foil bearings in high-speed turbo-machinery.

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备注/Memo

备注/Memo:
收稿日期: 2019-09-30。作者简介: 郭雨(1993—),男,博士生; 侯予(通信作者),男,教授,博士生导师。基金项目: 国家重点研发计划资助项目(2018YFB2000100); 陕西高校青年创新团队资助项目; 国家自然科学基金资助项目(51976150)。
更新日期/Last Update: 2020-05-10