JPH0466087B2 - - Google Patents
Info
- Publication number
- JPH0466087B2 JPH0466087B2 JP14061684A JP14061684A JPH0466087B2 JP H0466087 B2 JPH0466087 B2 JP H0466087B2 JP 14061684 A JP14061684 A JP 14061684A JP 14061684 A JP14061684 A JP 14061684A JP H0466087 B2 JPH0466087 B2 JP H0466087B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- persistent current
- protective resistor
- switch
- 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
- 230000001681 protective effect Effects 0.000 claims description 21
- 230000002085 persistent effect Effects 0.000 description 21
- 238000004804 winding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は永久電流モードで運転する超電導コイ
ル装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a superconducting coil device operating in persistent current mode.
超電導コイルはその特徴の１つである抵抗が零
という性質を利用して、永久電流スイツチと組合
せることにより、電流の減衰が極めて少ない永久
電流モードをつくることができる。第２図の回路
図において、超電導コイル１と並列に永久電流ス
イツチ２を接続し、保護抵抗８をスイツチ４を介
して永久電流スイツチ２に並列に接続する。超電
導コイル１の励磁では、外部の電源から電流リー
ド５を通して電流を超電導コイルに供給する。そ
の際に、永久電流スイツチ２は常電導状態、すな
わち、抵抗状態にし、また、スイツチ４をオフの
状態に設定しておく。所定の電流値まで励磁した
後、永久電流スイツチ２を超電導状態に転移させ
て、超電導コイル１に流れている電流を永久電流
スイツチ２にバイパスして、永久電流の循環モー
ドをつくる。その後、電源から供給していた電流
を零に下げる。永久電流は超電導コイル１と永久
電流スイツチ２との間で維持される。液体ヘリウ
ムなどの冷媒に入る熱浸入量を少なくするため
に、電流リード５を着脱式にし、永久電流モード
を達成した後、電源より供給していた電流を零に
下げ、スイツチ４をオン状態にし、次に、電流リ
ード５をクライオスタツトより切り離す。
One of the characteristics of a superconducting coil is that it has zero resistance, and by combining it with a persistent current switch, it is possible to create a persistent current mode with extremely low current attenuation. In the circuit diagram of FIG. 2, a persistent current switch 2 is connected in parallel with the superconducting coil 1, and a protective resistor 8 is connected in parallel to the persistent current switch 2 via a switch 4. To excite the superconducting coil 1, a current is supplied from an external power source to the superconducting coil through the current lead 5. At this time, the persistent current switch 2 is placed in a normally conductive state, that is, a resistive state, and the switch 4 is set in an OFF state. After excitation to a predetermined current value, the persistent current switch 2 is transferred to a superconducting state, and the current flowing in the superconducting coil 1 is bypassed to the persistent current switch 2, thereby creating a persistent current circulation mode. After that, reduce the current supplied from the power supply to zero. A persistent current is maintained between the superconducting coil 1 and the persistent current switch 2. In order to reduce the amount of heat that enters the refrigerant such as liquid helium, the current lead 5 is made removable, and after achieving persistent current mode, the current supplied from the power supply is reduced to zero, and the switch 4 is turned on. Next, the current lead 5 is disconnected from the cryostat.
この状態では、超電導コイル１、永久電流スイ
ツチ２、保護抵抗３、スイツチ４がクライオスタ
ツト内にあり、永久電流モードの電流が超電導コ
イル１と永久電流スイツチ２を循環して流れ続け
る。超電導コイル１、または、永久電流スイツチ
２が何らかの原因によつて常電導に転移し、クエ
ンチに至つた場合には、超電導コイル１に蓄えら
れていたエネルギがクライオスタツト内で放出さ
れる。超電導コイル１のみがクエンチした場合に
は、永久電流スイツチ２内に埋め込まれているヒ
ータにより永久電流スイツチ２も常電導に強制的
に転移させ、超電導コイル１の蓄積エネルギーを
保護抵抗３で消費させ、超電導コイル１の損傷を
防ぐ。また、永久電流スイツチ２がクエンチした
場合にも、超電導コイル１の蓄積エネルギーを保
護抵抗３で消費し、永久電流スイツチ２を保護す
る。 In this state, the superconducting coil 1, persistent current switch 2, protective resistor 3, and switch 4 are in the cryostat, and the current in persistent current mode continues to circulate through the superconducting coil 1 and persistent current switch 2. When the superconducting coil 1 or the persistent current switch 2 changes to normal conductivity for some reason and quenches, the energy stored in the superconducting coil 1 is released within the cryostat. When only the superconducting coil 1 is quenched, the persistent current switch 2 is also forcibly transferred to normal conductivity by the heater embedded in the persistent current switch 2, and the energy stored in the superconducting coil 1 is consumed by the protective resistor 3. , to prevent damage to the superconducting coil 1. Further, even when the persistent current switch 2 is quenched, the energy stored in the superconducting coil 1 is consumed by the protective resistor 3, and the persistent current switch 2 is protected.
超電導コイル１の蓄積エネルギーが大きくなる
にしたがつて、保護抵抗３の熱容量は大きなもの
が要求されるようになる。また、必要な抵抗値も
大きくなる。これらの要求を満足するように、ス
テンレスあるいは銅、アルミニウム、または、そ
れらの合金などの金属で保護抵抗を構成しようと
すると、円または矩形の断面を有し、かつ相当に
長い線またはテープ状になる。したがつて、保護
抵抗３は巻枠に無誘導に巻き回してクライオスタ
ツト内に収納する必要があり、これは蓄積エネル
ギーが大きくなるに伴ない、広い空間を必要とす
る。 As the energy stored in the superconducting coil 1 increases, the protective resistor 3 is required to have a larger heat capacity. Additionally, the required resistance value also increases. In order to satisfy these requirements, if a protective resistor is made of metal such as stainless steel, copper, aluminum, or an alloy thereof, it will have a circular or rectangular cross section and a fairly long wire or tape shape. Become. Therefore, the protective resistor 3 must be wound around the winding frame without induction and housed in the cryostat, which requires a large space as the stored energy increases.
本発明の目的は保護抵抗のためのスペースをあ
まりとらないコンパクトな超電導コイル装置を提
供することにある。
The object of the invention is to provide a compact superconducting coil arrangement that does not take up much space for protective resistors.
上記目的を達成するために、本発明においては
保護抵抗線を超電導コイルの外周に巻回して保護
抵抗のための巻枠およびクライオスタツト内の空
間を別に設けないようにする。
In order to achieve the above object, in the present invention, a protective resistance wire is wound around the outer periphery of a superconducting coil, so that there is no separate space within the winding frame and cryostat for the protective resistance.
以下、この発明の一実施例について第１図を参
照して説明する。なお、第１図において、第２図
と同一要素には同一符号を付してその説明を省略
する。すなわち超電導コイル１の外周に保護抵抗
３を無誘導巻する。保護抵抗３のワイヤの断面は
丸形のみでなく矩形でも良い。また、その材質は
銅、アルミニウム、ステンレス、または合金でも
可能である。
An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same elements as those in FIG. 2 are given the same reference numerals, and their explanations will be omitted. That is, the protective resistor 3 is non-inductively wound around the outer periphery of the superconducting coil 1. The cross section of the wire of the protective resistor 3 may be not only round but also rectangular. Further, the material may be copper, aluminum, stainless steel, or an alloy.
保護抵抗３をこのように構成すると、超電導コ
イル１の外周の僅かな空間に設置できる。電磁力
支持用バインド線も兼用できる。また、保護抵抗
３は超電導コイル１がクエンチしたときの擾乱磁
界の作用を受けないので機械的に安定である。 When the protective resistor 3 is configured in this way, it can be installed in a small space around the outer periphery of the superconducting coil 1. It can also be used as a binding wire for supporting electromagnetic force. Furthermore, the protective resistor 3 is not affected by the disturbance magnetic field when the superconducting coil 1 is quenched, so it is mechanically stable.
保護抵抗を超電導コイルの外周に巻回する時
に、無誘導に巻回するだけでなく、超電導コイル
の磁界を減少させる方向に誘導巻線することも可
能である。このような構成にすると、コイルと保
護抵抗線の合成インダクタンスが小さくなり、電
流の減衰が大きくなり、超電導コイルの保護に役
立つ。 When winding the protective resistor around the outer periphery of the superconducting coil, it is possible not only to wind it without induction, but also to wind it in a direction that reduces the magnetic field of the superconducting coil. This configuration reduces the combined inductance of the coil and protective resistance wire, increases current attenuation, and helps protect the superconducting coil.
本発明においては、保護抵抗線を超電導コイル
の外周に巻くようにしたので、超電導コイル装置
はコンパクトになる。
In the present invention, since the protective resistance wire is wound around the outer periphery of the superconducting coil, the superconducting coil device becomes compact.
第１図は本発明の一実施例の超電導コイル装置
の要部の断面図、第２図は本発明と従来技術に共
通する超電導コイル装置の電気接続図である。
１……超電導コイル、２……永久電流スイツ
チ、３……保護抵抗、４……スイツチ、５……電
流リード。
FIG. 1 is a sectional view of essential parts of a superconducting coil device according to an embodiment of the present invention, and FIG. 2 is an electrical connection diagram of the superconducting coil device common to the present invention and the prior art. 1... Superconducting coil, 2... Persistent current switch, 3... Protective resistor, 4... Switch, 5... Current lead.
Claims (1)
巻回された保護抵抗とを備えたことを特徴とする
超電導コイル装置。 ２ 保護抵抗は無誘導巻きされたことを特徴とす
る特許請求の範囲第１項記載の超電導コイル装
置。 ３ 保護抵抗は超電導コイルと逆むきに巻回され
たことを特徴とする特許請求の範囲第１項記載の
超電導コイル装置。[Claims] 1. A superconducting coil device comprising a superconducting coil and a protective resistor wound around the outer periphery of the superconducting coil. 2. The superconducting coil device according to claim 1, wherein the protective resistor is non-inductively wound. 3. The superconducting coil device according to claim 1, wherein the protective resistor is wound in the opposite direction to the superconducting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14061684A JPS6120303A (en) | 1984-07-09 | 1984-07-09 | Superconductive coil apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14061684A JPS6120303A (en) | 1984-07-09 | 1984-07-09 | Superconductive coil apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6120303A JPS6120303A (en) | 1986-01-29 |
| JPH0466087B2 true JPH0466087B2 (en) | 1992-10-22 |
Family
ID=15272847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14061684A Granted JPS6120303A (en) | 1984-07-09 | 1984-07-09 | Superconductive coil apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6120303A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0812232B2 (en) * | 1990-09-28 | 1996-02-07 | 通商産業省工業技術院長 | SQUID element |
| JP4655594B2 (en) * | 2004-11-16 | 2011-03-23 | セイコーエプソン株式会社 | Image forming apparatus |
| JP5525810B2 (en) * | 2009-12-28 | 2014-06-18 | 株式会社東芝 | Superconducting magnet device and quench protection method thereof |
| JP2013251516A (en) | 2012-06-04 | 2013-12-12 | Hitachi Ltd | Superconducting magnet device |
-
1984
- 1984-07-09 JP JP14061684A patent/JPS6120303A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6120303A (en) | 1986-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |