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Cryogen-free magnet system with a heatsink connected to the gas circuit of a cryo cooler

A technology of coolers and coolants, applied in the direction of coolers, refrigerators, magnetic objects, etc., can solve expensive problems, achieve simple but effective use, and prolong TTQ

Active Publication Date: 2018-03-06
BRUKER SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the storage must be strong, and therefore must be large, heavy and expensive

Method used

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  • Cryogen-free magnet system with a heatsink connected to the gas circuit of a cryo cooler
  • Cryogen-free magnet system with a heatsink connected to the gas circuit of a cryo cooler
  • Cryogen-free magnet system with a heatsink connected to the gas circuit of a cryo cooler

Examples

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Embodiment Construction

[0049] A conventional configuration of an actively cooled superconducting magnet system consists of a superconducting magnet (or magnet coil) in an insulating vacuum cooled by a second stage of a cryocooler. The first stage is used to cool the radiation shield (not shown here). This cold head is connected to a compressor which compresses helium from approximately 5-10 bar to 20-25 bar during operation. Subsequently, this helium drives the cold head.

[0050] Such as figure 1 In a cryostat arrangement 1 of this type shown in , the superconducting magnet coil system 3 to be cooled is arranged in a vacuum chamber 2 provided with a cryocooler which actively cools the cryostat Arrangement 1 and comprising a coolant circuit 5 comprising a compressor 6 and a coldhead 4 having a chiller finger 7 which is at least single stage, and Two-stage in the illustrated embodiment, and in thermal contact with the superconducting magnet coil system 3, the volume vessel 8 containing the cryogen...

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PUM

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Abstract

A cryostat arrangement (1) comprising: a vacuum box (2) comprising a superconducting magnet coil system (3) and an active cryo cooler, characterized in that the volume container is guided to pass through the pressure-resistant pipeline (9) of the vacuum box and is connected to a coolant circuit, the fluid component (10) is arranged in the pipeline and can influence the flow rate through the pipeline in a defined manner by means of the fluid component, and the fluid component influences the flow rate of the volumetric flow caused by the pressure difference between the volume container and the coolant circuit so that the volume container is enabled to be filled with a cryogenic fluid or cryogenic fluid from the coolant circuit with a time constant of at least 15 minutes to flow from the volume container into the coolant circuit with a time constant of at least 15 minutes. In this way, the disadvantages of the known general arrangement can be avoided. The cryostat arrangement can be operated in a "refrigerant-free" manner and allows a long enough quench time in the event of an operating failure.

Description

technical field [0001] The invention relates to a cryostat arrangement comprising a vacuum chamber in which a superconducting magnet coil system to be cooled is arranged, a cryocooler is provided which actively cools The cryostat is arranged and comprises a coolant circuit comprising a compressor and a cold head having at least one stage, in particular two stages, of cooling arms thermally connected to a superconducting magnet coil system In contact, the volume vessel containing the cryogenic medium, in particular containing helium, is arranged such that it is thermally conductively connected to the superconducting magnet coil system and / or to a part of the cryostat arrangement, via which the surrounding heat can be flow to the superconducting magnet coil system. [0002] Cryostat arrangements of this type, which however sometimes also contain small amounts of liquid refrigerant, are known per se, eg from EP 0 937 953 A1, DE 199 14 778 B4, DE 10 2014 218 773 A1, US 7,263,839 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/02F17C13/04F25B9/00H01F6/04
CPCF17C13/02F17C13/025F17C13/026F17C13/04F25B9/00H01F6/04F17C2223/013F17C2221/017F17C2260/04F17C2250/072F17C2250/0439F17C2250/0434F25D19/006G01R33/3804G01R33/3815F17C3/085F17C2250/03F17C2250/043F17C2270/02F25B9/145F25B2309/1428
Inventor P·维库斯J·欣德尔
Owner BRUKER SWITZERLAND AG
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