A novel hydrogen turbo-expander with active magnetic bearings and an eddy current brake

被引：1
|
作者：
Chen, J. Y. [1 ,2 ]
Li, X. M. [1 ,2 ]
Dong, X. B. [1 ,2 ]
Lv, C. [1 ]
Wu, J. H. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, State Key Lab Technol Space Cryogen Propellants, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ADVANCES IN CRYOGENIC ENGINEERING | 2020年 / 755卷
关键词：
D O I：
10.1088/1757-899X/755/1/012033
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A cryogenic expander for hydrogen liquefier with active magnetic bearings (AMB) has been designed and will be made and tested. The shaft design and strength review are significant factors for the turbine since it affects the performance and safety of the expander significantly. In order to produce lower temperature hydrogen, the liquefier needs a very small and high-speed turbo-expander. However, there are few studies on expander with both active magnetic bearings and eddy current brakes. In this study, the speed of the turbine is up to 100000 rpm. Its cooling power is about 4kW. The inlet pressure is 1MPa, and the outlet pressure is 0.7MPa.Under this condition, the turbine is designed, and the simulation is done. An eddy current brake which can govern the rotational speed quickly is designed and studied as well.
引用
收藏
页数：8
相关论文
共 50 条
  • [31] Frequency domain modeling of eddy current loss for magnetic thrust bearings
    Zhang, M. S.
    Tian, Y. S.
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 2013, 227 (07) : 718 - 728
  • [32] Analytical method for eddy current loss in laminated rotors with magnetic bearings
    Sun, YH
    Yu, L
    IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (02) : 1341 - 1347
  • [33] Modeling of Ripple Currents for Magnetic bearings including Eddy Current Effects
    Tian, Yongsheng
    Sun, Yanhua
    Yu, Lie
    APPLIED ELECTROMAGNETICS AND MECHANICS (II), 2009, 13 : 291 - 292
  • [34] Eddy current loss analysis in radial magnetic bearings with solid rotor
    Sun, Yan-Hua
    Yu, Lie
    Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2002, 22 (02): : 116 - 120
  • [35] DESIGN CONSIDERATIONS FOR HIGH PRESSURE TURBO EXPANDERS SUPPORTED BY ACTIVE MAGNETIC BEARINGS
    Innocenti, Alice
    Cangioli, Francesco
    Iurisci, Giuseppe
    Biliotti, Davide
    PROCEEDINGS OF THE ASME TURBO EXPO: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, 2019, VOL 7A, 2019,
  • [36] Magnetic circuit simulation and optimization of a permanent magnet eddy current recoil brake
    Shen, Yanping
    Liu, Ning
    Xie, Zihao
    Liang, Yuxia
    Sun, Mingliang
    Wang, Nannan
    Zhendong yu Chongji/Journal of Vibration and Shock, 2022, 41 (06): : 8 - 14
  • [37] Study on Electromagnetic Characteristics of a Novel Eddy Current Brake Excited by Toothed Coils
    Tian J.
    Ning K.
    Pang H.
    Lan H.
    Shuai Z.
    Mao N.
    Gai J.
    Zhou G.
    Binggong Xuebao/Acta Armamentarii, 2023, 44 (01): : 290 - 297
  • [38] A novel H-type linear permanent magnet eddy current brake
    Yang, Panpan
    Zhou, Gongbo
    He, Zhenzhi
    Tang, Chaoquan
    Zhu, Zhencai
    International Journal of Applied Electromagnetics and Mechanics, 2022, 69 (04): : 443 - 458
  • [39] A novel H-type linear permanent magnet eddy current brake
    Yang, Panpan
    Zhou, Gongbo
    He, Zhenzhi
    Tang, Chaoquan
    Zhu, Zhencai
    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2022, 69 (04) : 443 - 458
  • [40] Analysis and Experiment of Eddy Current Loss in Radial Magnetic Bearings with Solid Rotor
    Yin, Zengyuan
    Cai, Yuanwen
    Wang, Weijie
    Ren, Yuan
    2018 ASIA CONFERENCE ON MECHANICAL ENGINEERING AND AEROSPACE ENGINEERING (MEAE 2018), 2018, 198
12345