JPH04142709A - Superconducting magnet device - Google Patents
Superconducting magnet deviceInfo
- Publication number
- JPH04142709A JPH04142709A JP26701890A JP26701890A JPH04142709A JP H04142709 A JPH04142709 A JP H04142709A JP 26701890 A JP26701890 A JP 26701890A JP 26701890 A JP26701890 A JP 26701890A JP H04142709 A JPH04142709 A JP H04142709A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- superconducting coil
- helium
- magnet device
- coil
- 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.)
- Pending
Links
- 239000001307 helium Substances 0.000 claims abstract description 31
- 229910052734 helium Inorganic materials 0.000 claims abstract description 31
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract 2
- 230000002950 deficient Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 235000012771 pancakes Nutrition 0.000 description 1
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、超電導磁石装置に関し、特に、超電導コイ
ルを冷却する液体ヘリウム中の蒸発ガスの気泡の通路に
着目した超電導磁石装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a superconducting magnet device, and particularly to a superconducting magnet device that focuses on the passage of bubbles of vaporized gas in liquid helium that cools a superconducting coil. .
［従来の技術］
第２図は、例えば特公昭６１−５６８５１号公報に示さ
れた従来の超電導磁石装置であり、図において、（１）
は超電導コイルを収納する極低温容器、（２）は超電導
コイル、（３）はスペーサ、（４）は固定部材、矢印（
５）は冷媒である液体ヘリウムとガスヘノラム力流路で
ある。[Prior Art] FIG. 2 shows a conventional superconducting magnet device disclosed in, for example, Japanese Patent Publication No. 61-56851, in which (1)
is a cryogenic container that houses the superconducting coil, (2) is the superconducting coil, (3) is the spacer, (4) is the fixing member, and the arrow (
5) is a flow path for liquid helium, which is a refrigerant, and gas henolum.
次に動作について説明する。一般に５超電導状態を作り
出すためにはコイルク２）を液体ヘリウムまたは超臨界
ヘリウム等の冷媒によって極低温に冷却する。このため
超電導コイル（２）は通常、真空断熱された容器の中に
収納され、容器の底部から冷媒が流入する。すなわち複
数個のパンケーキ状に巻回された超電導コイル（２）と
これらを収納する極低温容器（１）および複数個の超電
導コイル（２）間に位置するスペーサ（３）ならびにコ
イル（２）と極低温容器（１）間に位置する固定部材（
４）から構成された部分を、矢印（５）のように流れる
。Next, the operation will be explained. Generally, in order to create the 5 superconducting state, the coil 2) is cooled to an extremely low temperature using a coolant such as liquid helium or supercritical helium. For this reason, the superconducting coil (2) is usually housed in a vacuum-insulated container, and a refrigerant flows into the container from the bottom. In other words, a plurality of superconducting coils (2) wound in the shape of a pancake, a cryogenic container (1) storing them, a spacer (3) located between the plurality of superconducting coils (2), and the coil (2). and the fixing member located between the cryogenic container (1) (
4) flows as shown by arrow (5).
このスペーサ（３）は、超電導コイル（２）を効率良く
冷却するための液体ヘリウムや泡状のガスヘリウムの冷
媒の流通路を構成するとともに、隣接超電導コイル間の
電気絶縁を行うものであり、固定部材（４）はコイル（
２）とヘリウム容器（１）間の固定ならびに電気的絶縁
を行うものである。This spacer (3) constitutes a flow path for a coolant such as liquid helium or foamy gas helium to efficiently cool the superconducting coil (2), and also provides electrical insulation between adjacent superconducting coils. The fixing member (4) is a coil (
2) and the helium container (1) as well as electrical insulation.
［発明が解決しようとする課題］
従来の超電導磁石装置は以上のように構成されているの
で、超電導コイルの側面を冷却効果の高い液体ヘリウム
のみならず、冷却効果の低い泡状のガスヘリウムも混在
して流れることになり、この泡により一時的に超電導コ
イルの側面の冷却が悪くなる。つまり、−時的な冷却不
良で超電導コイルの超電導破壊などの異常が発生する可
能性があった。[Problems to be Solved by the Invention] Since the conventional superconducting magnet device is configured as described above, the side surface of the superconducting coil is heated not only by liquid helium, which has a high cooling effect, but also by foamy gas helium, which has a low cooling effect. They will flow together, and these bubbles will temporarily impair the cooling of the side surfaces of the superconducting coil. In other words, there is a possibility that an abnormality such as destruction of the superconductivity of the superconducting coil may occur due to temporary cooling failure.
この発明は上記のような問題点を解消するためになされ
たもので、超電導コイルの冷却不良を無くし、超電導破
壊などの異常の発生しにくい、安定な超電導磁石装置を
得ることを目的とする。This invention has been made to solve the above-mentioned problems, and aims to provide a stable superconducting magnet device that eliminates poor cooling of superconducting coils and is less prone to abnormalities such as superconductor breakdown.
［課題を解決するための手段］
この発明に係る超電導磁石装置は、冷媒中に、液体ヘリ
ウムとガスヘリウムとを分離するための気泡ガイドが設
けられている。[Means for Solving the Problems] A superconducting magnet device according to the present invention is provided with a bubble guide in a refrigerant for separating liquid helium and gas helium.
［作 用］
この発明においては、冷媒中に気泡ガイドを設け、超電
導コイルの側面は冷却効果の高い液体へＪラム力みと接
し、冷却効果の低いカスヘリウムは気泡ガイドにより、
超電導コイルの側面から分離される。[Function] In this invention, a bubble guide is provided in the refrigerant, the side surface of the superconducting coil is brought into contact with the liquid with high cooling effect by the J ram force, and the gas helium with low cooling effect is moved by the bubble guide.
separated from the side of the superconducting coil.
［実施例］
以下この発明の一実施例を第１図について説明する。図
において、符号（１）〜（５）は第２図と同一なのて、
符号の説明は省略する。（６）は超電導コイル（２）の
内面に沿って立設した筒状の気泡ガイド、（７）はヘリ
ウムの気泡を示している。[Embodiment] An embodiment of the present invention will be described below with reference to FIG. In the figure, symbols (1) to (5) are the same as in Figure 2, so
Explanation of the symbols will be omitted. (6) shows a cylindrical bubble guide installed along the inner surface of the superconducting coil (2), and (7) shows helium bubbles.
超電導状態を作り出すためには、コイル（２）を液体ヘ
リウムまたは超臨界ヘリウム等の冷媒によって極低温に
冷却すること、あるいは超電導コイル（２）を収納する
極低温容器（１）等の構成および極低温容器（１）の底
部から冷媒を流入することは従来と同様である。一方、
この発明では気泡ガイド（６）を取付けたことにより、
ヘリウムの気泡（７）は気泡ガイド（６）の中を通って
上昇し、超電導コイル（２）の側面は液体ヘリウムのみ
と接することになる。In order to create a superconducting state, the coil (2) must be cooled to an extremely low temperature with a coolant such as liquid helium or supercritical helium, or the configuration of the cryogenic container (1) that houses the superconducting coil (2) and the Introducing the refrigerant from the bottom of the low temperature container (1) is the same as in the conventional case. on the other hand,
In this invention, by installing the bubble guide (6),
The helium bubbles (7) rise through the bubble guide (6) and the sides of the superconducting coil (2) come into contact only with liquid helium.
「発明の効果］
以上めように、この発明によれば、超電導磁石装置の冷
媒中に、液体ヘリウムとガスヘリウムとを分離するため
の気泡ガイドを設けたことにより、超電導コイルの側面
は冷却効果の高い液体ヘリウムのみと接し、冷却効果の
低いガスヘリウムは気泡ガイドにより、超電導コイルの
側面から分離される。この結果、超電導コイルの冷却不
良がなくなり、超電導破壊などの異常の発生しにくい、
安定な磁石装置を得る効果がある。"Effects of the Invention" As mentioned above, according to the present invention, by providing the bubble guide for separating liquid helium and gas helium in the coolant of the superconducting magnet device, the side surface of the superconducting coil has a cooling effect. The gas helium, which has a low cooling effect and has a low cooling effect, is separated from the side of the superconducting coil by the bubble guide.As a result, there is no cooling failure of the superconducting coil, and abnormalities such as superconductor breakdown are less likely to occur.
This has the effect of obtaining a stable magnet device.
第１図はこの発明の一実施例の面断面図、第２図は従来
の超電導磁石装置の横断面図である。
（１）・・極低温容器、（２）・・超電導コイル、（３
） ・スペーサ、（４〉 ・固定部材、（５）
液体ヘリウムとガスヘリウムの流路、（６）・ 気泡ガ
イド、＜７） ヘリウムの気泡。
なお、各図中、同一符号は同一または相当部分を示す。
代 理 人 大 岩 増 雄ｙ′Ｉ
−）１図
楡伯：息容器FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional superconducting magnet device. (1)...Cryogenic container, (2)...Superconducting coil, (3
) ・Spacer, (4> ・Fixing member, (5)
Liquid helium and gas helium flow path, (6)・Bubble guide, <7) Helium bubbles. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiway'I
-) Figure 1 Yubo: Breath container
Claims (1)
却する冷媒を収容する極低温容器を備え、液体ヘリウム
とガスヘリウムが混在して前記超電導コイルを冷却する
ものにおいて、前記ガスヘリウムが上方へ流れるときに
前記超電導コイルと接することを防止するための気泡ガ
イドを備えてなることを特徴とする超電導磁石装置。A superconducting coil containing a superconducting coil and a cryogenic container containing a refrigerant for cooling the superconducting coil, in which liquid helium and gas helium are mixed to cool the superconducting coil, when the gas helium flows upward. A superconducting magnet device comprising a bubble guide for preventing bubbles from coming into contact with the superconducting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26701890A JPH04142709A (en) | 1990-10-03 | 1990-10-03 | Superconducting magnet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26701890A JPH04142709A (en) | 1990-10-03 | 1990-10-03 | Superconducting magnet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04142709A true JPH04142709A (en) | 1992-05-15 |
Family
ID=17438914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26701890A Pending JPH04142709A (en) | 1990-10-03 | 1990-10-03 | Superconducting magnet device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04142709A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53136499A (en) * | 1977-05-02 | 1978-11-29 | Hitachi Ltd | Superconduction unit |
| JPS5559704A (en) * | 1978-10-27 | 1980-05-06 | Toshiba Corp | Superconductive magnet unit |
-
1990
- 1990-10-03 JP JP26701890A patent/JPH04142709A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53136499A (en) * | 1977-05-02 | 1978-11-29 | Hitachi Ltd | Superconduction unit |
| JPS5559704A (en) * | 1978-10-27 | 1980-05-06 | Toshiba Corp | Superconductive magnet unit |
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