JPH06132566A - Superconducting magnet - Google Patents

Superconducting magnet

Info

Publication number
JPH06132566A
JPH06132566A JP4279787A JP27978792A JPH06132566A JP H06132566 A JPH06132566 A JP H06132566A JP 4279787 A JP4279787 A JP 4279787A JP 27978792 A JP27978792 A JP 27978792A JP H06132566 A JPH06132566 A JP H06132566A
Authority
JP
Japan
Prior art keywords
superconducting
superconducting coil
lead wire
power lead
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.)
Granted
Application number
JP4279787A
Other languages
Japanese (ja)
Other versions
JP3200198B2 (en
Inventor
Ken Sasaki
謙 佐々木
Tatsumi Yamane
達視 山根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Transport Engineering Inc
Original Assignee
Toshiba Corp
Toshiba Transport Engineering Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Transport Engineering Inc filed Critical Toshiba Corp
Priority to JP27978792A priority Critical patent/JP3200198B2/en
Publication of JPH06132566A publication Critical patent/JPH06132566A/en
Application granted granted Critical
Publication of JP3200198B2 publication Critical patent/JP3200198B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To utilize a power lead wire as an absorber of a frictional heat occurring between a coil and a support fitment for a permanent current mode since the power lead wire used in energizing a superconducting coil is not used and thus the space is wasted when the superconducting coil is the permanent current mode. CONSTITUTION:A power lead wire 6 is connected to a start and an end of winding of a superconducting coil 1 and is wound in an alignment close winding by one layer of coil and is integrally molded in the coil 1. The molded body is tightened by a linear 7 and a support member 8 and is held in an inner bath 9 with a cryogenic temperature. Accordingly, a frictional heat occurring between the coil 1 and the support member 8 due to a vibration from the outside is absorbed by the power lead wire 6, and a quenching of the superconducting coil 1 is prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、磁気浮上式鉄道の車両
走行用或いは核磁気共鳴イメージング(MRI)等に用
いられる超電導磁石に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting magnet used for running a vehicle on a magnetic levitation railway or for nuclear magnetic resonance imaging (MRI).

【0002】[0002]

【従来の技術】磁気浮上式鉄道或いは核磁気共鳴イメー
ジング(MRI)等に用いられる超電導磁石は、超電導
線を多数回整列密巻きに巻込んだ超電導コイルを極低温
の容器である内槽に収容したものであり、この超電導コ
イルに電流を流す事により強力な磁界を発生させてい
る。
2. Description of the Related Art A superconducting magnet used for a magnetic levitation railway, nuclear magnetic resonance imaging (MRI), etc., contains a superconducting coil in which a superconducting wire is wound in a number of closely aligned windings in an inner tank which is a cryogenic container. The magnetic field is generated by passing an electric current through this superconducting coil.

【0003】この超電導コイルは、長時間にわたり一定
の電流を流し続ける必要があるため永久電流モードで使
用される。永久電流モードとは、超電導コイルを閉ルー
プにして電流を閉込めるようにした状態である。
This superconducting coil is used in the permanent current mode because it is necessary to keep a constant current flowing for a long time. The persistent current mode is a state in which the superconducting coil is closed loop to confine the current.

【0004】超電導コイル及びその永久電流モードにつ
いて図7〜図10を参照して説明する。
The superconducting coil and its persistent current mode will be described with reference to FIGS.

【0005】超電導コイル1に電流を通電するには、ま
ず、超電導磁石2に対し、外部の電源3と外部パワーリ
ード線4を接続する。永久電流スイッチ5をOFF状態
にして、外部電源3から外部パワーリード線4及び超電
導磁石内部のパワーリード線6を経て、超電導コイル1
に電流を通電する(図7)。
In order to pass a current through the superconducting coil 1, first, the external power source 3 and the external power lead wire 4 are connected to the superconducting magnet 2. With the permanent current switch 5 turned off, the superconducting coil 1 is fed from the external power source 3 through the external power lead wire 4 and the power lead wire 6 inside the superconducting magnet.
An electric current is applied to (FIG. 7).

【0006】規定の電流値に達した後、永久電流スイッ
チ5をON状態にすれば、電流は超電導コイル1と永久
電流スイッチ5の間で閉ループとなり、パワーリード線
6には電流は流れなくなる(図8)。この後、外部電源
3と外部パワーリード線4を取り外し、超電導磁石は永
久電流モードを維持して通電状態になる。
When the permanent current switch 5 is turned on after reaching the specified current value, the current becomes a closed loop between the superconducting coil 1 and the permanent current switch 5, and no current flows through the power lead wire 6 ( (Figure 8). After that, the external power source 3 and the external power lead wire 4 are removed, and the superconducting magnet is maintained in the permanent current mode to be in the energized state.

【0007】ところで、通常、パワーリード線4、6に
は、超電導線、銅等の導電性の優れた材料を使用する。
By the way, usually, the power lead wires 4 and 6 are made of a material having excellent conductivity such as a superconducting wire or copper.

【0008】磁気浮上式鉄道に使用する超電導コイル1
には、外部から電流を通電するための永久電流スイッチ
5及びパワーリード線6を図に示す如き構成で接続配置
する(図9、図10)。
Superconducting coil 1 used for magnetic levitation railway
In this case, a permanent current switch 5 and a power lead wire 6 for supplying a current from the outside are connected and arranged in a configuration as shown in the drawings (FIGS. 9 and 10).

【0009】磁気浮上式鉄道に使用する超電導コイル1
は、銅を安定化母材とする超電導線をレーストラック形
状に整列密巻に多段数に巻いて、モールドしている。こ
のモールドした超電導コイル1を複数個のライナ7、支
持具8を介して極低温容器である内槽9に収容し、この
内槽9の中に冷却剤として液体ヘリウムを満たし、超電
導コイル1を超電導状態に維持する。
Superconducting coil 1 used for magnetic levitation railway
Is a mold in which a superconducting wire whose stabilizing base material is copper is wound in a racetrack shape in an arrayed dense winding in multiple stages. The molded superconducting coil 1 is housed in an inner tank 9 which is a cryogenic container via a plurality of liners 7 and a supporting member 8. The inner tank 9 is filled with liquid helium as a coolant to form the superconducting coil 1. Maintain superconductivity.

【0010】支持具8は通常非磁性で、剛性の高いステ
ンレス鋼でできている。この支持具8を超電導コイル1
に直接固定すると、ステンレス鋼の摩擦係数が大きいた
め超電導コイル1と支持具8の接触面で発生するずれに
より、大きな摩擦熱を生じ、この熱が液体ヘリウムで吸
収しきれず超電導線1に伝わると、超電導破壊を起こし
てしまう恐れがある。
The support 8 is usually non-magnetic and made of highly rigid stainless steel. This support 8 is used as a superconducting coil 1.
If it is directly fixed to the superconducting wire 1, a large frictional heat is generated due to the deviation generated at the contact surface between the superconducting coil 1 and the supporting member 8 due to the large friction coefficient of stainless steel, and this heat cannot be absorbed by the liquid helium and is transmitted to the superconducting wire 1. , There is a risk of causing superconducting breakdown.

【0011】この摩擦発熱を緩和するため、支持具と超
電導コイルの間に摩擦係数の低い材料で作られたライナ
7を介在させている。
To alleviate this frictional heat generation, a liner 7 made of a material having a low coefficient of friction is interposed between the support and the superconducting coil.

【0012】[0012]

【発明が解決しようとする課題】磁気浮上式鉄道に使用
する超電導コイル1は、外部より大きな振動エネルギを
受ける。この振動の影響により、ライナ7と超電導コイ
ル1間で摩擦熱が発生する。ライナ7は低摩擦係数の材
料を使う事により、その発熱量は小さく抑えられている
が、その熱量が液体ヘリウムの冷却能力以上となった場
合、超電導コイル1の臨界温度を超えて超電導破壊を起
こしてしまう恐れがある。
The superconducting coil 1 used in the magnetic levitation railway receives vibrational energy larger than the outside. Due to the influence of this vibration, frictional heat is generated between the liner 7 and the superconducting coil 1. The liner 7 uses a material with a low coefficient of friction to keep its calorific value small. However, if the calorific value exceeds the cooling capacity of liquid helium, it will exceed the critical temperature of the superconducting coil 1 and cause superconducting destruction. There is a risk of waking up.

【0013】本発明では、振動エネルギによってライナ
と超電導コイル間に発生する摩擦熱が超電導コイル内部
の超電導線に伝わりにくい構造となし、超電導コイルが
超電導破壊を起こす温度に達するのを未然に防ぎ超電導
コイルの安定性を向上させる事を目的としている。
In the present invention, the frictional heat generated between the liner and the superconducting coil due to the vibration energy is not easily transmitted to the superconducting wire inside the superconducting coil, and the superconducting coil is prevented from reaching the temperature at which the superconducting destruction occurs. The purpose is to improve the stability of the coil.

【0014】[0014]

【課題を解決するための手段】上記目的達成のため、本
発明では、パワーリード線6の接続部を超電導コイル1
の巻線内に設け、超電導コイル1の内周及び外周表面に
パワーリード線6による巻線で一層を構成し、パワーリ
ード線6の一部を超電導コイル1と一体のモールドにし
てしまう。
To achieve the above object, in the present invention, the connecting portion of the power lead wire 6 is connected to the superconducting coil 1.
The power lead wire 6 is provided on the inner and outer surfaces of the superconducting coil 1 to form a single layer, and a part of the power lead wire 6 is integrally molded with the superconducting coil 1.

【0015】[0015]

【作用】超電導コイルは、閉ループで電流を閉じ込め、
永久電流モードデ使用される。従ってこの状態において
は、パワーリード線には、電流は流れない。
[Operation] The superconducting coil confines the current in a closed loop,
Permanent current mode used. Therefore, in this state, no current flows through the power lead wire.

【0016】このパワーリード線の一部を、超電導コイ
ルの内周表面及び外周表面の夫々の支持具との間に介在
させた構成により、超電導コイルとライナ間に発生する
摩擦熱は、パワーリード線が吸収し、超電導コイルへの
熱侵入を低減することとなる。
Due to the structure in which a part of the power lead wire is interposed between the inner peripheral surface and the outer peripheral surface of the superconducting coil, friction heat generated between the superconducting coil and the liner is generated. The wire absorbs and reduces heat invasion into the superconducting coil.

【0017】[0017]

【実施例】本発明を図1〜図2a,bに示す実施例に基
づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS.

【0018】超電導コイルの始・終端に超電導コイル1
の口出し線10とパワーリード線6を夫々接続し、パワ
ーリード線は一層分を巻き込んで、これらを超電導コイ
ルと一体にモールドする。
Superconducting coil 1 at the beginning and end of the superconducting coil
The lead wire 10 and the power lead wire 6 are connected to each other, the power lead wire is wound by one layer, and these are molded integrally with the superconducting coil.

【0019】このように、モールドされた超電導コイル
1の内・外層表面は、導電性及び熱伝導性とも良好な銅
材又は銅を母材とする超電導線を使用したパワーリード
線6を整列密巻により構成され、その内側のパワーリー
ド線6の接続部13でパワーリード線6と超電導コイル
口出し線10とが超電導コイル1と接続され、更に、そ
の内側に超電導コイル1が多数回整列密巻きされた状態
となる。
As described above, the surface of the inner and outer layers of the molded superconducting coil 1 is formed by aligning the power lead wires 6 using a copper material or a superconducting wire containing copper as a base material, which has good electrical conductivity and thermal conductivity. The power lead wire 6 and the superconducting coil lead wire 10 are connected to the superconducting coil 1 at the connection portion 13 of the power lead wire 6 inside thereof, and further, the superconducting coil 1 is aligned and densely wound a number of times inside thereof. It will be in the state of being.

【0020】パワーリード線6を内・外周に整列密巻き
するには、2通りの方法がある。一つは、パワーリード
線6を単純にコイル状に整列密巻きする方法(図3)で
ある。ただし、コイル状に巻かれている為、通電時パワ
ーリード線6に電流が流れた場合、磁界が発生する。
There are two methods for tightly winding the power lead wire 6 on the inner and outer circumferences. One is a method of simply and closely winding the power lead wires 6 in a coil shape (FIG. 3). However, since it is coiled, a magnetic field is generated when a current flows through the power lead wire 6 during energization.

【0021】この構成で使用上特に問題は無いが、磁界
を発生しない構造とする場合は、もう一つの方法として
図4に示すように隣接するパワーリード線6の電流の方
向(矢印)が逆になるように折り曲げて巻き込めば(無
誘導巻き)磁界は発生しなくなる。
Although there is no particular problem in use in this structure, in the case of a structure that does not generate a magnetic field, as another method, as shown in FIG. 4, the current directions (arrows) of the adjacent power lead wires 6 are reversed. If it is bent and rolled up so as to become (non-induction winding), the magnetic field will not be generated.

【0022】このような構成により、振動エネルギによ
ってライナ7と超電導コイル1間に発生する摩擦熱は、
熱伝導性の良いパワーリード線6へ放散され、パワーリ
ード線6の温度が上昇する。パワーリード線6と超電導
コイル1は、常時冷却剤の液体ヘリウムにより冷却され
ているので、時間がたつにつれて、パワーリード線6の
温度は下降していく。
With this structure, the frictional heat generated between the liner 7 and the superconducting coil 1 due to the vibration energy is
The heat is dissipated to the power lead wire 6 having good thermal conductivity, and the temperature of the power lead wire 6 rises. Since the power lead wire 6 and the superconducting coil 1 are always cooled by liquid helium as a coolant, the temperature of the power lead wire 6 decreases with time.

【0023】このように外部からの振動エネルギによつ
て生ずる摩擦熱は、パワーリード線6に放散されるの
で、超電導コイル1の温度上昇は大幅に低減し、従来よ
り超電導破壊を起こし難くなる。
Since the frictional heat generated by the vibration energy from the outside is dissipated in the power lead wire 6, the temperature rise of the superconducting coil 1 is significantly reduced, and the superconducting breakdown is less likely to occur than in the conventional case.

【0024】本発明の他の実施例について説明する(図
5参照方)。
Another embodiment of the present invention will be described (see FIG. 5).

【0025】パワーリード線6と並列に超電導コイル1
とは独立した銅線又は、超電導線12をパワーリード線
間に介在させて超電導コイルを構成する。このようにし
ても作用、効果共に上記同様である。
The superconducting coil 1 is arranged in parallel with the power lead wire 6.
A copper wire or a superconducting wire 12 independent of the above is interposed between the power lead wires to form a superconducting coil. Even in this case, the action and effect are the same as above.

【0026】さらに、他の実施例(図6)として、永久
電流スイッチ5を超電導コイル1の中央配置とし全体の
配置のスペースファクタを向上させる。
Further, as another embodiment (FIG. 6), the permanent current switch 5 is arranged in the center of the superconducting coil 1 to improve the space factor of the whole arrangement.

【0027】[0027]

【発明の効果】本発明により、外部からの振動エネルギ
によりライナと超電導コイル間に発生する摩擦熱は、パ
ワーリード線へ放散し、超電導コイルへ伝わる摩擦熱を
低減させる事ができる。
According to the present invention, the frictional heat generated between the liner and the superconducting coil due to the vibration energy from the outside is dissipated to the power lead wire and the frictional heat transmitted to the superconducting coil can be reduced.

【0028】これにより、超電導コイルは、以前より超
電導破壊を起こし難くなり安定性の向上した超電導コイ
ルとなる。
As a result, the superconducting coil becomes a superconducting coil that is more resistant to superconducting destruction than before and has improved stability.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の超電導コイルの断面図、FIG. 1 is a sectional view of a superconducting coil of the present invention,

【図2】(a)−本発明による超電導磁石の構成断面
図、(b)−(a)の電気的構成図、
2A is a sectional view of a superconducting magnet according to the present invention, FIG. 2B is an electrical configuration diagram of FIG.

【図3】図2(a)の斜視図、FIG. 3 is a perspective view of FIG.

【図4】本発明の他の実施例による超電導磁石の斜視
図、
FIG. 4 is a perspective view of a superconducting magnet according to another embodiment of the present invention,

【図5】本発明の更に他の実施例による超電導磁石のコ
イル部分断面図、
FIG. 5 is a partial sectional view of a coil of a superconducting magnet according to still another embodiment of the present invention,

【図6】本発明の第三の他の実施例の構成断面図、FIG. 6 is a sectional view showing the configuration of a third embodiment of the present invention;

【図7】従来の超電導磁石の電気的構成図、FIG. 7 is an electrical configuration diagram of a conventional superconducting magnet,

【図8】図7の動作説明図、FIG. 8 is an operation explanatory diagram of FIG. 7;

【図9】従来の超電導磁石の構成図、FIG. 9 is a configuration diagram of a conventional superconducting magnet,

【図10】図9の部分斜視断面図である。FIG. 10 is a partial perspective sectional view of FIG.

【符号の説明】[Explanation of symbols]

1…超電導コイル 2…超電導磁石 3…外部電源 4、6…パワーリード線 5…永久電流スイッチ 9…内槽 7…ライナー 8…支持具 9…内槽 12…(熱吸収用)銅線 1 ... Superconducting coil 2 ... Superconducting magnet 3 ... External power supply 4, 6 ... Power lead wire 5 ... Permanent current switch 9 ... Inner tank 7 ... Liner 8 ... Supporting tool 9 ... Inner tank 12 ... (for heat absorption) Copper wire

───────────────────────────────────────────────────── フロントページの続き (72)発明者 山根 達視 東京都府中市東芝町1番地 株式会社東芝 府中工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsumi Yamane No. 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu factory inside

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】整列密巻の多段層で、且つ、レーストラッ
ク状に形成した超電導コイルを、支持具を介して極低温
の内槽に収容してなる超電導磁石において、 前記超電導コイルの少なくとも巻始め端か或いは巻終り
端に一層分巻き込んだパワーリード線を接続した超電導
コイルを具備することを特徴とする超電導磁石。
1. A superconducting magnet having a multi-layered layer of closely packed windings and formed in a racetrack shape, the superconducting coil being housed in a cryogenic inner tank through a support, wherein at least the superconducting coil is wound. A superconducting magnet comprising a superconducting coil connected to a power lead wire wound one layer at the beginning end or the winding end end.
【請求項2】前記超電導コイル端に接続したパワーリー
ド線の一層巻きと並行に、その巻線間に銅線か或いは超
電導線を巻込んだことを特徴とする請求項1記載の超電
導磁石。
2. The superconducting magnet according to claim 1, wherein a copper wire or a superconducting wire is wound between the windings of the power lead wire connected to the end of the superconducting coil in parallel with one winding.
【請求項3】前記パワーリード線と超電導コイルとの接
続部にコイル口出し線を接続してこれらを一体にモール
ドしたことを特徴とする請求項1記載の超電導磁石。
3. The superconducting magnet according to claim 1, wherein a coil lead wire is connected to a connecting portion between the power lead wire and the superconducting coil and these are integrally molded.
【請求項4】前記超電導コイル端に接続して巻込んだパ
ワーリード線を無誘導巻きにしたことを特徴とする請求
項1記載の超電導磁石。
4. The superconducting magnet according to claim 1, wherein the power lead wire wound in connection with the end of the superconducting coil is non-inductively wound.
JP27978792A 1992-10-19 1992-10-19 Superconducting magnet Expired - Fee Related JP3200198B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27978792A JP3200198B2 (en) 1992-10-19 1992-10-19 Superconducting magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27978792A JP3200198B2 (en) 1992-10-19 1992-10-19 Superconducting magnet

Publications (2)

Publication Number Publication Date
JPH06132566A true JPH06132566A (en) 1994-05-13
JP3200198B2 JP3200198B2 (en) 2001-08-20

Family

ID=17615915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27978792A Expired - Fee Related JP3200198B2 (en) 1992-10-19 1992-10-19 Superconducting magnet

Country Status (1)

Country Link
JP (1) JP3200198B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012064649A (en) * 2010-09-14 2012-03-29 Sumitomo Electric Ind Ltd Superconducting coil and superconducting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
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JP2012064649A (en) * 2010-09-14 2012-03-29 Sumitomo Electric Ind Ltd Superconducting coil and superconducting apparatus

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