RESEARCH AND DEVELOPMENT OF DN900LN<sub>2</sub> CRYO-PUMP

WU Yifeng; XU Zhongtang

doi:10.3969/j.issn.1006-7086.2013.02.003

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VACUUM AND CRYOGENICS > 2013 > 19(2): 77-81. > DOI: 10.3969/j.issn.1006-7086.2013.02.003

WU Yifeng, XU Zhongtang. RESEARCH AND DEVELOPMENT OF DN900LN₂ CRYO-PUMP[J]. VACUUM AND CRYOGENICS, 2013, 19(2): 77-81. DOI: 10.3969/j.issn.1006-7086.2013.02.003

Citation:

WU Yifeng, XU Zhongtang. RESEARCH AND DEVELOPMENT OF DN900LN₂ CRYO-PUMP[J]. VACUUM AND CRYOGENICS, 2013, 19(2): 77-81. DOI: 10.3969/j.issn.1006-7086.2013.02.003

Citation:

WU Yifeng, XU Zhongtang. RESEARCH AND DEVELOPMENT OF DN900LN₂ CRYO-PUMP[J]. VACUUM AND CRYOGENICS, 2013, 19(2): 77-81. DOI: 10.3969/j.issn.1006-7086.2013.02.003

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RESEARCH AND DEVELOPMENT OF DN900LN₂ CRYO-PUMP

China Electronics Technology Corpotion No.16th Research Institute,Vacree Technologies Co.,Ltd.,Hefei,230088,China

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Received Date: December 25, 2012

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Abstract

Abstract

One LN2 cryopump with 900 mm internal diameter is described in this paper,which is applied to environmental simulation equipment,and pumping speed for N₂ is over 30 000 L/s.The cryopump can achieve the vacuum according to cryogenic condensation and cryogenic adsorption process by using circulating liquid nitrogen,and working together with GM cryocooler to supply cooling capacity commonly.This paper mostly discusses the operating principle,the structure design,the heat load calculation and the specification testing.It can provide the references of design ideas and computing methods for big caliber cryopump.
- Cryopump,
- Adsober array,
- Thermal load,
- Radiation shield,
- Liquid-N₂,Cryocooler