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Method and apparatus for cryogenic cooling of hts devices immersed in liquid cryogen

A liquid refrigerant and high-temperature superconducting technology, which can be used in household refrigeration devices, cooling fluid circulation devices, and machines that use refrigerant evaporation to solve problems such as refrigerant pollution and affecting the electrical breakdown strength of refrigerants.

Active Publication Date: 2017-05-10
法布鲁姆知识产权控股有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pumping requires a continuous supply of liquid nitrogen, or complicates compressors and condensers to reliquefy nitrogen vapor
Low pressure is also undesirable because the container needs to withstand the external pressure of the atmosphere, and any leaks in the container can contaminate the refrigerant with oxygen and water vapor in the atmosphere
In addition, the bubbles generated by the boiling of the refrigerant can adversely affect the electrical breakdown strength of the refrigerant

Method used

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  • Method and apparatus for cryogenic cooling of hts devices immersed in liquid cryogen
  • Method and apparatus for cryogenic cooling of hts devices immersed in liquid cryogen
  • Method and apparatus for cryogenic cooling of hts devices immersed in liquid cryogen

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Embodiment Construction

[0017] refer to figure 1 , which shows a high-temperature superconducting device 20 comprising a high-temperature superconducting (HTS) device 21 immersed in a liquid refrigerant 22, for example, the liquid refrigerant is liquid nitrogen, and the HTS of the device 21 includes Bi2223 or The winding of REBCO HTS, and the device 21 is a superconducting magnet, a superconducting fault current limiter or a superconducting energy storage inductor.

[0018] exist figure 1 In this case, a liquid refrigerant 22 is accommodated in a thermally insulated container 23 serving as a cryostat. In this example, the container 23 is cylindrical and has: an outer wall 24; an inner wall 25 connected to the outer wall at the top of the container; and a vacuum space 26 between the inner wall and the outer wall. between the outer walls. For example, the inner wall 24 and the outer wall 25 are made of stainless steel.

[0019] For the above reasons, it is necessary to cool the HTS device 21 to a t...

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Abstract

A thermally insulated vessel contains a thermal insulation barrier defining an upper compartment above the barrier and a lower compartment below the barrier. The compartments are interconnected by a passage to allow pressure equalization. High temperature superconductor is mounted within the lower compartment for immersion in the liquid cryogen. A cryogenic refrigerator has a cold head thermally coupled to the high temperature superconductor for maintaining the high temperature superconductor below a superconductive transition temperature. A temperature controller maintains a temperature of the liquid cryogen in the upper compartment at a temperature of at least a boiling point of the liquid cryogen at atmospheric pressure when the lower compartment and at least a portion of the upper compartment are filled with the liquid cryogen.

Description

technical field [0001] The present disclosure relates to methods and apparatus for cryogenic cooling of high temperature superconducting (HTS) devices immersed in a liquid cryogen. Background technique [0002] When common materials are cooled to cryogenic temperatures, the properties of the materials often change, and these changes complicate the design of cryogenic equipment. These changes become significant below about 150 degrees Kelvin. Thus, in this disclosure, "cryogenic" refers to temperatures below 150 degrees Kelvin. For example, a "cryogenic liquid" is a liquid that boils below 150 degrees Kelvin. Examples of cryogenic liquids include liquid helium, liquid hydrogen, liquid neon, liquid nitrogen, liquid fluorine, liquid argon, liquid oxygen, and liquid krypton. [0003] A high temperature superconductor (HTS) is a superconductor with a transition temperature above thirty degrees Kelvin (-243.2°C). The transition temperature is the temperature below which a supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L39/02H01F6/04F25D3/10H10N60/80
CPCH01F6/04F25D19/00F25B19/005F25D17/02F25D29/001F25D2400/02F25D2700/121
Inventor M·斯坦斯
Owner 法布鲁姆知识产权控股有限公司
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