The Application and Improvement of Helium Turbines in the EAST Cryogenic System

FU Bao(付豹); ZHANG Qiyong(张启勇); ZHU Ping(朱平); CHENG Anyi(成安义)

doi:10.1088/1009-0630/16/5/14

Plasma Science and Technology > 2014 > 16(5): 527-531. > DOI: 10.1088/1009-0630/16/5/14

FU Bao(付豹), ZHANG Qiyong(张启勇), ZHU Ping(朱平), CHENG Anyi(成安义). The Application and Improvement of Helium Turbines in the EAST Cryogenic System[J]. Plasma Science and Technology, 2014, 16(5): 527-531. DOI: 10.1088/1009-0630/16/5/14

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The Application and Improvement of Helium Turbines in the EAST Cryogenic System

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

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Received Date: January 21, 2013

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Abstract

Abstract

The helium cryogenic system supplies supercritical helium cooling capacity at 4.5 K for the superconducting magnets in the EAST superconducting tokamak. Four low-temperature helium turbines are used in the 2 kW helium refrigeration system, and their performance and reliability are critical for the continuous operation of the tokamak. The turbines were made by the Helium Mechanics Company in Russia. The start-up process is very unstable, easily broken, and thus testing and improvements are needed. In this paper, we analyze the structure of the helium turbine, make improvements, and describe the testing process and results of the improved helium turbines. Some of the operational experiences during the start-up process and tests are also presented.
- helium turbines,
- helium refrigerator,
- helium cryogenic system,
- EAST tokamak

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References (9)

References

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