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徑向型超導(dǎo)軸承的計(jì)算和實(shí)驗(yàn)研究
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1.航天低溫推進(jìn)劑技術(shù)國家重點(diǎn)實(shí)驗(yàn)室(中國科學(xué)院理化技術(shù)研究所)，中國科學(xué)院大學(xué);2.航天低溫推進(jìn)劑技術(shù)國家重點(diǎn)實(shí)驗(yàn)室(中國科學(xué)院理化技術(shù)研究所)

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基金項(xiàng)目:

財(cái)政部國家重大科研裝備研制項(xiàng)目（ZDYZ2014-1）資助，航天低溫推進(jìn)劑技術(shù)國家重點(diǎn)實(shí)驗(yàn)室基金課題（SKLTSCP1603和SKLTSCP1902）資助


Calculation and experimental study of radial high-temperature superconducting magnetic bearing
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Affiliation:

State Key Laboratory of Technologies in Space Cryogenic Propellants (Technical Institute of Physics and Chemistry, Chinese Academy of Sciences), University of Chinese Academy of Sciences

Fund Project:

This work is supported by State Key Laboratory of Technologies in Space Cryogenic Propellants Fund (SKLTSCP1603 and SKLTSCP1902) and National Research and Development Project of Key Scientific Instruments Fund (ZDYZ2014-1).

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    摘要:

    針對應(yīng)用于離心式氦氣冷壓機(jī)的徑向型高溫超導(dǎo)磁懸浮軸承,給出了永磁轉(zhuǎn)子磁場計(jì)算和結(jié)構(gòu)設(shè)計(jì)方法,并開展了軸承徑向力和徑向剛度的計(jì)算研究,搭建了超導(dǎo)軸承性能測量平臺,開展了軸承轉(zhuǎn)子空間磁場測量和軸承性能測試。計(jì)算和測試結(jié)果表明,磁場計(jì)算方法可行,且結(jié)果準(zhǔn)確,在距離永磁轉(zhuǎn)子外表面1 mm處的最大外磁場強(qiáng)度約為0.5 T。軸承徑向力在場冷和零場冷條件下的計(jì)算結(jié)果均隨轉(zhuǎn)子偏心量的增大而增大,與測試結(jié)果在線性度和趨勢上具有很好的一致性。本文實(shí)驗(yàn)軸承徑向剛度測試值為362.4 N/mm,與場冷條件下的徑向剛度計(jì)算結(jié)果334.594 N/mm接近。本文所述的徑向軸承磁力計(jì)算方法可用于超導(dǎo)軸承徑向剛度的定性計(jì)算和設(shè)計(jì),對超導(dǎo)軸承的應(yīng)用研究具有一定的指導(dǎo)意義。

    Abstract:

    For the radial high-temperature superconducting magnetic bearing used in centrifugal helium cold compressor, the magnetic field calculation and structural design method of permanent magnet rotor are given, and the calculation of radial force and radial stiffness is carried out. A superconducting bearing performance measurement platform was built, and bearing rotor space magnetic field and bearing performance were measured. The calculation and measurement results show that the magnetic field calculation method is feasible and the result is accurate. The maximum external magnetic field at 1 mm from the outer surface of the permanent magnet rotor is about 0.5 T. The calculated radial force under field cooling and zero field cooling conditions both increase with the increase of the rotor eccentricity, which is in good agreement with the measurement results in linearity and trend. The measured radial stiffness value of the measured bearing in this paper is 362.4 N/mm, which is close to the calculated radial stiffness 334.594 N/mm, under field cooling conditions. The radial force calculation method described in this paper can be used for the qualitative radial stiffness calculation and design of high-temperature superconducting magnetic bearings, which has certain guiding significance for the application research of superconducting bearings.

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引用本文

鄒銀才,商晉,關(guān)翔,邊星,伍繼浩,李青.徑向型超導(dǎo)軸承的計(jì)算和實(shí)驗(yàn)研究[J].稀有金屬材料與工程,2020,49(9):3077~3083.[Zou Yincai, Shang Jin, Guan Xiang, Bian Xing, Wu Jihao, Li Qing. Calculation and experimental study of radial high-temperature superconducting magnetic bearing[J]. Rare Metal Materials and Engineering,2020,49(9):3077~3083.]
DOI：10.12442/j. issn.1002-185X.20190719

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  • 收稿日期:2019-09-03
  • 最后修改日期:2019-11-18
  • 錄用日期:2019-11-19
  • 在線發(fā)布日期: 2020-10-15
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