JP2545452B2 - Superconducting magnet device - Google Patents
Superconducting magnet deviceInfo
- Publication number
- JP2545452B2 JP2545452B2 JP63288869A JP28886988A JP2545452B2 JP 2545452 B2 JP2545452 B2 JP 2545452B2 JP 63288869 A JP63288869 A JP 63288869A JP 28886988 A JP28886988 A JP 28886988A JP 2545452 B2 JP2545452 B2 JP 2545452B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- magnet device
- superconducting magnet
- current lead
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、超電導マグネット装置に関する。特に、脱
着式電流リードの材質は、酸化物系セラミックス超電導
材料により構成される超電導マグネット装置に関する。The present invention relates to a superconducting magnet device. In particular, the material of the removable current lead relates to a superconducting magnet device composed of an oxide-based ceramics superconducting material.
［従来の技術及び発明が解決しようとする問題点］ 従来、超電導マグネット装置の構造において、超電導
磁石を永久電流モードで使用する場合、電流リードから
の熱侵入を減少させるために、脱着式の電流リードが利
用されてきた。然し乍ら、この脱着式リードは、電気伝
導度の高い金属、例えば、無酸素銅の薄板が使用されて
おり、これが、冷却容器内のマグネットに接続されてい
るために、ジュール熱が発生し、熱は比較的に容易に、
冷却容器内へ侵入してしまう。この熱侵入を抑えること
が、重要な問題であった。[Problems to be Solved by Prior Art and Invention] Conventionally, in the structure of a superconducting magnet device, when a superconducting magnet is used in a permanent current mode, a desorption type current is used to reduce heat intrusion from a current lead. Leads have been used. However, this detachable lead uses a thin plate of a metal with high electrical conductivity, for example, oxygen-free copper, which is connected to the magnet in the cooling container, so that Joule heat is generated and heat is generated. Is relatively easy,
It enters the cooling container. Suppressing this heat penetration was an important issue.
この問題を解決する手段として、従来、考案されてい
るものは、特開昭62−39002号に、及び特開昭62−19900
5号に開示されるように複雑な構造のものであった。As means for solving this problem, those conventionally devised are disclosed in JP-A-62-39002 and JP-A-62-19900.
It had a complicated structure as disclosed in No. 5.
液体ヘリウム冷却の超電導マグネット装置の超電導コ
イル部分への熱侵入の大部分は、この電流リード部分か
らであり、本発明は、液体窒素温度（80k）以下になる
リード部材として、従来の無酸素銅に代えて、高温超電
導セラミックス材料を使用したもので、これにより、侵
入熱量を激減することのできる超電導マグネット装置を
提供する。Most of the heat penetration into the superconducting coil part of the liquid helium-cooled superconducting magnet device is from this current lead part, and the present invention uses a conventional oxygen-free copper as a lead member having a liquid nitrogen temperature (80 k) or less. In place of the above, a high-temperature superconducting ceramic material is used, which provides a superconducting magnet device capable of drastically reducing the amount of heat entering.
即ち、本発明は、超電導マグネット装置において、マ
グネットに超電導電流を供給し、取り出すための導入部
分、即ち、電流リードを通して、熱侵入を出来るだけ少
なくし、また、その電流リードの間での通過電流による
ジュール熱をできるだけ少なくすることのできる超電導
マグネット装置を提供することを目的とする。従って、
本発明は、上記の目的を達することができ、実用的に優
れた超電導マグネット装置を提供することを目的とす
る。That is, the present invention is, in the superconducting magnet device, through the introduction portion for supplying and extracting the superconducting conductive current to the magnet, that is, the current lead, to minimize the heat invasion, and the passing current between the current leads. It is an object of the present invention to provide a superconducting magnet device capable of minimizing Joule heat due to. Therefore,
An object of the present invention is to provide a superconducting magnet device which can achieve the above-mentioned objects and is excellent in practical use.
［問題点を解決するための手段］ 前記のような超電導マグネット装置を得るために、本
発明は、超電導コイルと、この超電導コイルに電源から
電流を供給する脱着式電流リードと、超電導コイルのた
めの保護抵抗回路を有し；該電流リードの挿入、抜取に
伴って超電導コイルのための該保護抵抗回路を開閉する
スイッチを有する超電導マグネット装置において、該電
流リード部材の一部に、高温セラミックス超電導材成形
体を用いるとともに、該超電導材成形体の電源供給側端
部を冷凍機により冷却することを特徴とする前記超電導
マグネット装置である。[Means for Solving Problems] In order to obtain a superconducting magnet device as described above, the present invention provides a superconducting coil, a detachable current lead for supplying a current from a power source to the superconducting coil, and a superconducting coil. In a superconducting magnet device having a switch for opening and closing the protective resistance circuit for a superconducting coil according to insertion and removal of the current lead, a high temperature ceramic superconducting material is provided in a part of the current lead member. In the above superconducting magnet device, a material compact is used and an end portion of the superconducting material compact on the power supply side is cooled by a refrigerator.
［作用］ 本発明の超電導マグネット装置の構造では、従来の金
属でできた電流リードの一部に高温超電導セラミックス
体を使用することによって、超電導コイルへの熱侵入を
防ぐことができる。即ち、高温超電導体の部分は、電気
抵抗がないために、ジュール熱の発生がなく、その分、
超電導コイルへの熱侵入がない。[Operation] In the structure of the superconducting magnet device of the present invention, by using the high-temperature superconducting ceramic body for a part of the current lead made of the conventional metal, it is possible to prevent heat from entering the superconducting coil. That is, since the high-temperature superconductor portion has no electric resistance, Joule heat is not generated,
No heat enters the superconducting coil.
本発明によるマグネット装置の構造の１例を、第１図
の模式的断面図に示すが、本発明は、これに限定される
ものではない。One example of the structure of the magnet device according to the present invention is shown in the schematic cross-sectional view of FIG. 1, but the present invention is not limited to this.
［実施例］ 図により説明すると、第１図の模式的断面図は、脱着
式電流リードが、本発明による高温超電導セラミックス
体により、その一部を代替した超電導マグネット装置を
示す。[Embodiment] Explaining with reference to the drawings, the schematic sectional view of FIG. 1 shows a superconducting magnet device in which a part of the removable current lead is replaced by the high-temperature superconducting ceramic body according to the present invention.
超電導マグネット装置を作動させるためには、電源装
置６からクライオスタット（冷却容器）10の中のマグネ
ットコイル７へ電流を供給してやらなければならない。
このコイル７を収納するヘリウム容器９は、液体ヘリウ
ム温度に保持されている。従って、ヘリウム容器９に
は、熱侵入をできる限り、少なくする必要があるため
に、図示のように、熱シールド板３、４を設け、２重容
器にする。本発明では、更に、この熱侵入の防止をでき
るだけ効率的に行なうように、電流リード２の一部部材
に高温超電導セラミックス体を使用した。In order to operate the superconducting magnet device, it is necessary to supply current from the power supply device 6 to the magnet coil 7 in the cryostat (cooling container) 10.
The helium container 9 accommodating the coil 7 is maintained at the liquid helium temperature. Therefore, in the helium container 9, it is necessary to reduce heat invasion as much as possible. Therefore, as shown in the drawing, the heat shield plates 3 and 4 are provided to form a double container. Further, in the present invention, a high temperature superconducting ceramic body is used as a part of the current lead 2 so as to prevent the heat invasion as efficiently as possible.
電流リード２は、第１図のクライオスタット10内に配
置され、極低温に保持された超電導コイル７と接続する
極低温分から、電源に接続するクライオスタット10の外
の常温領域部分まで配置されており、電流リード２内の
温度勾配により、極低温部への熱が侵入するものであ
る。従って、電流リード２は長くとって、熱侵入を最小
にするものである。また、電流リード２は、従来の金属
製のものでは、熱伝導率も高いので、その一部を図示の
ように、冷凍機１の冷却部1aに近く、液体窒素温度以下
に保持される部分５を、高温超電導セラミックス体で代
替すると、液体ヘリウムへ侵入する熱が少なくなり、効
率的に熱侵入防止が可能になる。The current lead 2 is arranged in the cryostat 10 shown in FIG. 1, and is arranged from a cryogenic portion connected to the superconducting coil 7 kept at a cryogenic temperature to a room temperature region outside the cryostat 10 connected to a power source. Due to the temperature gradient in the current lead 2, heat enters the cryogenic portion. Therefore, the current leads 2 should be long to minimize heat penetration. Further, since the current lead 2 is made of a conventional metal and has a high thermal conductivity, a part of the current lead 2 is close to the cooling unit 1a of the refrigerator 1 and is kept at a liquid nitrogen temperature or lower as shown in the drawing. When 5 is replaced with a high temperature superconducting ceramics body, the amount of heat penetrating into liquid helium is reduced, and it is possible to efficiently prevent heat penetration.
更に、第２図に、本発明による電流リード２の詳細
を、その拡大断面図で示す。常温側から低温側へ延びる
電流リードガイド管11の中に１対の電流リードが設けら
れ、その途中から超電導セラミックス体15を設けて、そ
の周囲を安定化材16で取り囲む。超電導セラミックス体
15は、銀メッキされたコネクタ17により、NbTi超電導材
線18に結合されている。Further, FIG. 2 shows details of the current lead 2 according to the present invention in an enlarged sectional view thereof. A pair of current leads is provided in a current lead guide tube 11 extending from the room temperature side to the low temperature side, a superconducting ceramics body 15 is provided in the middle thereof, and a periphery thereof is surrounded by a stabilizing material 16. Superconducting ceramic body
15 is connected to the NbTi superconducting wire 18 by a silver-plated connector 17.
［発明の効果］ 本発明による超電導マグネット装置により、 第１に、簡単な機構で、熱伝導勾配を高くすることの
できる電流リードを有し、小型化の容易な構造を有する
超電導マグネット装置を提供すること、 第２に、熱伝導率の低いために、超電導マグネットコ
イルを収納する液体ヘリウム又はクライオスタット中へ
の熱の侵入量が少なく、そのために、液体ヘリウムの蒸
発量を抑えるための機構を簡単にし、能率的にできる超
電導マグネット装置を提供できること、 第３に、更に、本発明の構造の電流リードでは、その
中にジュール熱の発生がないために、より熱侵入の少な
い構造の超電導マグネット装置が提供されたこと、 などの顕著な技術的効果が得られた。EFFECTS OF THE INVENTION The superconducting magnet device according to the present invention firstly provides a superconducting magnet device having a simple mechanism, a current lead capable of increasing a heat conduction gradient, and a structure that is easy to miniaturize. Secondly, since the thermal conductivity is low, the amount of heat entering the liquid helium or cryostat that houses the superconducting magnet coil is small, and therefore the mechanism for suppressing the evaporation amount of liquid helium is simple. The present invention can provide a superconducting magnet device which can be efficiently manufactured. Thirdly, in the current lead having the structure of the present invention, since Joule heat is not generated in the current lead, the superconducting magnet device having a structure with less heat penetration can be provided. Was provided, and significant technical effects were obtained.
第１図は、本発明の超電導マグネット装置を模式的に示
す模式的断面図である。 第２図は、その電流リード部分を示す拡大断面図であ
る。 ［主要部分の符号の説明］ １……冷凍機,1a……冷却部 ２……電流リード ３、４……熱シールド板 ５……高温超電導線材 ６……電源装置 ７……超電導コイル ９……ヘリウム容器 10……冷却容器（クライオスタット） 11……電流リードガイド管 12……導線 15……高温超電導材 16……安定化材 17……コネクタ 18……NbTi超電導材FIG. 1 is a schematic cross-sectional view schematically showing a superconducting magnet device of the present invention. FIG. 2 is an enlarged sectional view showing the current lead portion. [Description of symbols of main parts] 1 ... Refrigerator, 1a ... Cooling unit 2 ... Current leads 3,4 ... Heat shield plate 5 ... High temperature superconducting wire 6 ... Power supply unit 7 ... Superconducting coil 9 ... ... Helium container 10 ... Cooling container (cryostat) 11 ... Current lead guide tube 12 ... Conductor 15 ... High temperature superconducting material 16 ... Stabilizing material 17 ... Connector 18 ... NbTi superconducting material
Claims (1)
から電流を供給する脱着式電流リードと、超電導コイル
のための保護抵抗回路を有し；該電流リードの挿入、抜
取に伴って超電導コイルのための該保護抵抗回路を開閉
するスイッチを有する超電導マグネット装置において、 該電流リード部材の一部に、高温セラミックス超電導材
成形体を用いるとともに、該超電導材成形体の電源供給
側端部を冷凍機により冷却することを特徴とする前記超
電導マグネット装置。1. A superconducting coil, a detachable current lead for supplying a current from a power source to the superconducting coil, and a protective resistance circuit for the superconducting coil; In a superconducting magnet device having a switch for opening and closing the protective resistance circuit, a high temperature ceramics superconducting material molded body is used as a part of the current lead member, and a power supply side end portion of the superconducting material molding body is provided in a refrigerator. The superconducting magnet device is characterized by being cooled by means of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63288869A JP2545452B2 (en) | 1988-11-17 | 1988-11-17 | Superconducting magnet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63288869A JP2545452B2 (en) | 1988-11-17 | 1988-11-17 | Superconducting magnet device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135714A JPH02135714A (en) | 1990-05-24 |
| JP2545452B2 true JP2545452B2 (en) | 1996-10-16 |
Family
ID=17735811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63288869A Expired - Lifetime JP2545452B2 (en) | 1988-11-17 | 1988-11-17 | Superconducting magnet device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2545452B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101247263B1 (en) * | 2011-11-14 | 2013-03-25 | 삼성전자주식회사 | Demountable current lead unit and superconducting magnet apparatus employing the same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678419B1 (en) * | 1991-06-27 | 1993-09-03 | Alsthom Gec | SUPERCONDUCTIVE CERAMIC PART FOR POWER SUPPLY. |
| DE4208378A1 (en) * | 1992-03-16 | 1993-09-23 | Asea Brown Boveri | Current supply for superconducting appts. - comprises normal-conducting current supply for carrying current to high temp. superconductor |
| US5376755A (en) * | 1992-04-10 | 1994-12-27 | Trustees Of Boston University | Composite lead for conducting an electrical current between 75-80K and 4.5K temperatures |
| US20120309630A1 (en) * | 2011-05-31 | 2012-12-06 | General Electric Company | Penetration tube assemblies for reducing cryostat heat load |
| JP6022990B2 (en) * | 2013-04-19 | 2016-11-09 | 株式会社神戸製鋼所 | Cryostat |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199005A (en) * | 1986-02-27 | 1987-09-02 | Toshiba Corp | Superconducting magnet device |
| JPS62208677A (en) * | 1986-03-10 | 1987-09-12 | Toshiba Corp | Superconducting magnet device |
| JPH088166B2 (en) * | 1987-03-31 | 1996-01-29 | 住友電気工業株式会社 | Current lead |
-
1988
- 1988-11-17 JP JP63288869A patent/JP2545452B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101247263B1 (en) * | 2011-11-14 | 2013-03-25 | 삼성전자주식회사 | Demountable current lead unit and superconducting magnet apparatus employing the same |
| US8583200B2 (en) | 2011-11-14 | 2013-11-12 | Samsung Electronics Co., Ltd. | Demountable current lead unit and superconducting magnet apparatus employing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02135714A (en) | 1990-05-24 |
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