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Refrigerant-free magnet system including heat sink connected to cryocooler

A cooler, coolant technology, applied in refrigerators, coolers, magnetic objects, etc., can solve problems such as expensive, achieve the effect of increasing efficiency and prolonging TTQ

Active Publication Date: 2020-02-21
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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  • Refrigerant-free magnet system including heat sink connected to cryocooler
  • Refrigerant-free magnet system including heat sink connected to cryocooler
  • Refrigerant-free magnet system including heat sink connected to cryocooler

Examples

Experimental program
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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 equipment 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 chamber (2) comprising a superconducting magnet coil system (3) and an active cryocooler, characterized in that the volume vessel is guided through a pressure-resistant A line (9) is connected to the coolant circuit, a fluid part (10) is arranged in the line, by means of which the flow rate through the line can be influenced in a defined manner, and the fluid part influences the flow rate between the volume container and the coolant circuit. The flow rate of the volumetric flow caused by the pressure difference is such that the volumetric container is filled with a time constant of at least 15 minutes or cryogenic fluid flows from the volumetric container into the coolant circuit with a time constant of at least 15 minutes. In this way, the disadvantages of known conventional arrangements can be avoided. The cryostat installation can be operated "refrigerant-free" and allow a sufficiently long quench time in the event of an operating failure.

Description

technical field [0001] The invention relates to a cryostat installation 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 equipped with and comprises a coolant circuit comprising a compressor and a cold head having at least one-stage, in particular two-stage, 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 parts of the cryostat equipment, 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 Patents(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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