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KR-102963017-B1 - A cryogenic cooling characteristic evaluation environment composition device

KR102963017B1KR 102963017 B1KR102963017 B1KR 102963017B1KR-102963017-B1

Abstract

The present invention relates to a device for creating a cryogenic cooling characteristic evaluation environment for evaluating the electrical, thermal, and mechanical properties of high-temperature superconducting magnets and related core components. The cryogenic cooling characteristic evaluation environment creation device according to the present invention includes a vacuum chamber, a refrigerant chamber forming a space for receiving a cryogenic refrigerant inside the vacuum chamber, and a cryogenic bed provided on one side of the refrigerant chamber inside the vacuum chamber to provide a space for installing a component for cryogenic performance evaluation, wherein at least a portion thereof comes into contact with the cryogenic refrigerant contained inside the refrigerant chamber to perform heat exchange. According to the present invention, since the evaluation of cryogenic cooling characteristics can be performed without the superconducting magnet and related components being immersed in a refrigerant, it has the advantage of preventing oxidation caused by moisture penetration and damage due to rapid cooling that may occur during immersion for evaluation.

Inventors

  • 심기덕
  • 최종호
  • 김진근

Assignees

  • 주식회사 수퍼제닉스

Dates

Publication Date
20260511
Application Date
20240129

Claims (8)

  1. Vacuum chamber; A refrigerant chamber forming a receiving space for a cryogenic refrigerant inside the above vacuum chamber; A refrigerant inlet providing a path for injecting cryogenic refrigerant into the refrigerant chamber from one side outside the vacuum chamber; A refrigerant outlet providing a path for the cryogenic refrigerant contained in the refrigerant chamber to be discharged from the other side outside the vacuum chamber; A cryogenic bed provided inside the vacuum chamber and having a component for cryogenic performance evaluation installed outside the refrigerant chamber; comprising In the above cryogenic bed, A cryogenic cooling plate on which components for evaluating cryogenic cooling characteristics are installed, and A heat exchange leg is provided that is inserted into the refrigerant chamber from one side of the cryogenic cooling plate to enable conductive cooling through the cryogenic refrigerant. The above heat exchange leg is, A cryogenic cooling characteristic evaluation environment creation device characterized by being formed to extend downward to a length exceeding an intermediate position based on at least the vertical height of the refrigerant chamber.
  2. In Article 1, A plurality of the cryogenic beds are provided inside the vacuum chamber, and A cryogenic cooling characteristic evaluation environment creation device characterized by having evaluation components of the same or different types installed together on the plurality of cryogenic bed cooling plates to perform characteristic evaluation.
  3. In claim 2, the cryogenic cooling plate, A temperature measuring sensor for detecting temperature changes, and A cryogenic cooling characteristic evaluation environment creation device characterized by further comprising a temperature control heater that operates in response to temperature information detected by the above-mentioned temperature measuring sensor.
  4. In Article 1, The above cryogenic bed is cooled by a cryogenic refrigerant contained within the refrigerant chamber, wherein The above cryogenic refrigerant is, It is solidified by a cryogenic refrigerator detachably provided on one side of the vacuum chamber, or A cryogenic cooling characteristic evaluation environment creation device characterized by a cryogenic refrigerant supply device provided outside the vacuum chamber and connected to the refrigerant inlet and refrigerant outlet to circulate in a closed-loop path.
  5. In claim 4, the refrigerant chamber is, When connected to a cryogenic refrigerant supply device provided outside the vacuum chamber, the cryogenic refrigerant is one of an inert gas such as argon, helium, or nitrogen. A cryogenic cooling characteristic evaluation environment creation device characterized by applying a high-quality element as the cryogenic refrigerant when the above-mentioned cryogenic refrigerator is connected.
  6. In Article 1, A cryogenic cooling characteristic evaluation environment creation device characterized in that the heat exchange leg is formed with a plurality of heat dissipation fin structures corresponding to the area of the cryogenic cooling plate.
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Description

A cryogenic cooling characteristic evaluation environment composition device The present invention relates to a device for creating a cryogenic cooling characteristic evaluation environment for evaluating the electrical, thermal, and mechanical properties of high-temperature superconducting magnets and related core components. Generally, the evaluation of high-temperature superconducting magnets and related core components is carried out by immersing the subject of evaluation inside a chamber containing 77.4K liquid nitrogen. FIG. 1 is a drawing showing an embodiment of a durability test device for a superconducting magnet according to the prior art, illustrating a superconducting coil to be evaluated being immersed in a chamber containing a refrigerant. In other words, in conventional technology, electrical, thermal, and mechanical properties are evaluated by directly immersing superconducting magnets and components in a refrigerant; however, this method has the problem that mechanical deformation, such as material deformation due to rapid cooling, may occur. In addition, there is a concern regarding product damage due to thermal shrinkage, and the generation of bubbles caused by the vaporization of liquid nitrogen not only induces microcracks or delamination in the superconducting wire, but also presents a problem where coil damage may occur due to oxidation caused by moisture penetration if the subject to evaluation is returned to room temperature. Meanwhile, in conventional technology, a characteristic evaluation device has been developed in which a cryogenic refrigerator is individually mounted for each test unit to evaluate the performance of superconducting magnets and related components; however, such an integrated structure has the problem of requiring significant cost and time to test multiple components. In addition, in the event of a power outage or emergency, it is impossible to maintain the cryogenic temperature, which can lead to failure of the characteristic evaluation test as well as damage to the component being measured. FIG. 1 is a drawing showing one embodiment of a durability test device for a superconducting magnet according to the prior art. FIG. 2 is a drawing for explaining an embodiment of a cryogenic cooling characteristic evaluation environment creation device according to the present invention. FIG. 3 is a drawing for explaining another embodiment of a cryogenic cooling characteristic evaluation environment creation device according to the present invention. FIG. 4 is a drawing for explaining another embodiment of a cryogenic cooling characteristic evaluation environment creation device according to the present invention. FIG. 5 is a diagram illustrating the structure for selecting and operating a circulation method and a heat storage method according to the cryogenic cooling characteristic evaluation environment creation device according to the present invention. FIG. 6 is a diagram illustrating the process of evaluating cryogenic cooling characteristics using the present invention. Before proceeding with the explanation, the description of the present invention is merely an example for structural or functional explanation, and therefore the scope of the present invention should not be interpreted as being limited by the examples described in the text. That is, since the examples are subject to various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the purposes or effects presented in this invention do not imply that specific embodiments must include all of them or only such effects; therefore, the scope of the rights of this invention should not be understood as being limited by them. Unless otherwise defined, all terms used in the description of the present invention have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology, and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in the present invention. Furthermore, terms such as “first,” “second,” etc., are used merely to distinguish different components and are not bound by the order of manufacture; the scope of rights shall not be limited by these terms. Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In assigning reference numerals to the components of each drawing, the same components are denoted by the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in the description of the embodiments, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the p