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Numerical analysis of the static performance of an annular aerostatic gas thrust bearing applied in the cryogenic turbo-expander of the EAST subsystem

文献类型：期刊论文

作者Lai, Tianwei1; Fu, Bao2; Chen, Shuangtao1; Zhang, Qiyong2; Hou, Yu1
刊名PLASMA SCIENCE & TECHNOLOGY
出版日期2017-02-01
卷号19期号:2页码:1-8
关键词East Helium Cryogenic System Aerostatic Thrust Bearing Inclination Bearing Load
DOI10.1088/2058-6272/19/2/025604
文献子类Article
英文摘要The EAST superconducting tokamak, an advanced steady-state plasma physics experimental device, has been built at the Institute of Plasma Physics, Chinese Academy of Sciences. All the toroidal field magnets and poloidal field magnets, made of NbTi/Cu cable-in-conduit conductor, are cooled with forced flow supercritical helium at 3.8 K. The cryogenic system of EAST consists of a 2 kW/4 K helium refrigerator and a helium distribution system for the cooling of coils, structures, thermal shields, bus-lines, etc. The high-speed turbo-expander is an important refrigerating component of the EAST cryogenic system. In the turbo-expander, the axial supporting technology is critical for the smooth operation of the rotor bearing system. In this paper, hydrostatic thrust bearings are designed based on the axial load of the turbo-expander. Thereafter, a computational fluid dynamics-based numerical model of the aerostatic thrust bearing is set up to evaluate the bearing performance. Tilting effect on the pressure distribution and bearing load is analyzed for the thrust bearing. Bearing load and stiffness are compared with different static supply pressures. The net force from the thrust bearings can be calculated for different combinations of bearing clearance and supply pressure.
WOS关键词SYSTEM
WOS研究方向Physics
语种英语
WOS记录号WOS:000398145700017
资助机构National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; National Natural Science Foundation of China(51406157 ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; China Postdoctoral Science Foundation(2014M552438) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209) ; 51506209)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31798]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Lai, Tianwei,Fu, Bao,Chen, Shuangtao,et al. Numerical analysis of the static performance of an annular aerostatic gas thrust bearing applied in the cryogenic turbo-expander of the EAST subsystem[J]. PLASMA SCIENCE & TECHNOLOGY,2017,19(2):1-8.
APA Lai, Tianwei,Fu, Bao,Chen, Shuangtao,Zhang, Qiyong,&Hou, Yu.(2017).Numerical analysis of the static performance of an annular aerostatic gas thrust bearing applied in the cryogenic turbo-expander of the EAST subsystem.PLASMA SCIENCE & TECHNOLOGY,19(2),1-8.
MLA Lai, Tianwei,et al."Numerical analysis of the static performance of an annular aerostatic gas thrust bearing applied in the cryogenic turbo-expander of the EAST subsystem".PLASMA SCIENCE & TECHNOLOGY 19.2(2017):1-8.

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来源：合肥物质科学研究院

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