JPH0656811B2 - Quench detector for superconducting coil - Google Patents
Quench detector for superconducting coilInfo
- Publication number
- JPH0656811B2 JPH0656811B2 JP9028388A JP9028388A JPH0656811B2 JP H0656811 B2 JPH0656811 B2 JP H0656811B2 JP 9028388 A JP9028388 A JP 9028388A JP 9028388 A JP9028388 A JP 9028388A JP H0656811 B2 JPH0656811 B2 JP H0656811B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- coil
- superconducting
- quench
- channel
- 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〕 この発明は、超電導コイルの超電導状態の消失を検出す
る超電導コイルのクエンチ検出装置に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a quench detection device for a superconducting coil that detects disappearance of the superconducting state of the superconducting coil.
超電導コイルには極低温に冷却して超電導状態（電気抵
抗零）とし、通電して使用されるが、何らかの原因（例
えば液体ヘリウムの不足等）によつて、超電導性が失な
われ常電導状態になり抵抗が発生すること、つまりクエ
ンチが発生することがある。そして、この常電導状態に
なると抵抗発熱のために液体ヘリウムの異常蒸発や超電
導線材の焼損をきたす危険性がある。したがつて、これ
を防止するために超電導消失の場合には、いち早く超電
導性が失なわれることを検出してコイルの電流を減らす
必要がある。The superconducting coil is cooled to an extremely low temperature to bring it into a superconducting state (electrical resistance is zero), and it is energized before it is used. Therefore, resistance may be generated, that is, quench may be generated. Then, in this normal conduction state, there is a risk of abnormal evaporation of liquid helium and burning of the superconducting wire due to resistance heating. Therefore, in order to prevent this, when the superconductivity disappears, it is necessary to detect the loss of the superconductivity as soon as possible and reduce the coil current.
第６図は米国特許第3,579,035 号明細書に示された、上
記のクエンチ発生を検出する超電導コイルのクエンチ検
出装置の説明図であり、図において実線によつて表わさ
れる（１）は超電導コイル、（２）は極低温冷却用のク
ライオスタツト、(3)は励磁用の直流電源、（４）はコ
イル電流計、（５）は電圧計または電圧機能リレーを示
す。ここで超電導コイル（１）のインダクタンスをＬ、
抵抗をＲ、電流をＩとすれば超電導コイル（１）の両端
の電圧Ｖは論理的に Ｖ＝ＬdI／dI＋RI で表わされる。この式において第１項は誘導性の電圧、
第２項は抵抗性の電圧と呼ばれ、第２項の抵抗性の電圧
は、超電導状態ではＲ＝０のため存在せず、超電導性が
消失し超電導コイル（１）の一部が常電導状態になつた
ときのみ発生する。したがつて、この第２項の電圧の有
無を電圧計によつて検出し超電導消失の有無を知ること
ができる。FIG. 6 is an explanatory view of a quench detecting device for a superconducting coil for detecting the above-mentioned quench occurrence, which is shown in US Pat. No. 3,579,035. In the figure, (1) represented by a solid line is a superconducting coil (2) is a cryostat for cryogenic cooling, (3) is a DC power supply for excitation, (4) is a coil ammeter, and (5) is a voltmeter or a voltage function relay. Here, the inductance of the superconducting coil (1) is L,
If the resistance is R and the current is I, the voltage V across the superconducting coil (1) is logically expressed by V = L dI / dI + RI. In this equation, the first term is the inductive voltage,
The second term is called the resistive voltage, and the resistive voltage of the second term does not exist because R = 0 in the superconducting state, the superconductivity disappears and a part of the superconducting coil (1) is in the normal conducting state. Occurs only when the condition is reached. Therefore, the presence or absence of the voltage of the second term can be detected by the voltmeter to know the presence or absence of the disappearance of superconductivity.
第６図中に破線によつて表わされる補正コイル（６）は
超電導コイル（１）の導体から絶縁されかつ超電導コイ
ル（１）の導体の外管（７）に第７図に示すように密着
して沿うように設置されている。また、補正コイル
（６）の両端はそのいずれかの端子に電圧計（５）を介
して超電導コイル（１）の両端に接続されている。The correction coil (6) represented by a broken line in FIG. 6 is insulated from the conductor of the superconducting coil (1) and adheres to the outer tube (7) of the conductor of the superconducting coil (1) as shown in FIG. It is installed along with. Further, both ends of the correction coil (6) are connected to both terminals of the superconducting coil (1) via a voltmeter (5) at either terminal thereof.
このような構成においては、上式の第１項に相当する誘
導性の電圧は、いわゆる無誘導巻線の原理によつて互い
に打消されて電圧計（５）にはあらわれず、上式の第２
項に相当する抵抗性の電圧のみが検出できることにな
る。In such a configuration, the inductive voltages corresponding to the first term in the above equation are canceled out by the so-called non-inductive winding principle and do not appear in the voltmeter (5). Two
Only the resistive voltage corresponding to the term can be detected.
上記のように構成された従来の超電導コイルのクエンチ
検出装置においては、補正コイル（６）は外管（７）の
外部に添設されているために機械的に損傷し、補正コイ
ル（６）と超電導コイル（１）との間の絶縁不良により
信頼性のある検出ができないといつた問題点があつた。In the conventional quench detection device for a superconducting coil configured as described above, since the correction coil (6) is attached to the outside of the outer tube (7), it is mechanically damaged and the correction coil (6) is damaged. There was a problem that reliable detection could not be performed due to poor insulation between the superconducting coil (1) and the superconducting coil (1).
この発明は、上記のような問題点を解決するためなされ
たもので、補正コイルが機械的損傷により絶縁不良をお
こすようなことなく正確にクエンチの発生を検出するこ
とのできる超電導コイルのクエンチ検出装置を得ること
を目的とする。The present invention has been made to solve the above problems, and quench detection of a superconducting coil capable of accurately detecting the occurrence of quench without causing a defective insulation due to mechanical damage to the correction coil. The purpose is to obtain the device.
この発明に係る超電導コイルのクエンチ検出装置は、外
管の内部にチヤンネルを形成し、このチヤンネルに補正
コイルを配設したものである。A quenching apparatus for a superconducting coil according to the present invention is one in which a channel is formed inside an outer tube and a correction coil is arranged in this channel.
この発明においては、チヤンネルに補正コイルを配設し
たので、補正コイルが機械的に損傷するようなことは防
止される。In the present invention, since the correction coil is arranged in the channel, it is possible to prevent the correction coil from being mechanically damaged.
以下、この発明の実施例を図について説明する。第１図
および第２図はこの発明の第１の実施例を示すもので、
（１１）は超電導撚線（１ａ）からなる超電導コイル
（１）の外周に設けられた外管、（１２）は外管（１
１）の内部両側に形成された冷媒の通るチヤンネルで、
このチヤンネル（１２）に補正コイル（６）が配設され
ている。、 第３図，第４図はこの発明の第２の実施例を示すもの
で、（１３）は超電導コイル（１）の外周を適度な巻張
力によつて包んだ金属薄帯、（１４）は外管（１１）の
内面と金属薄帯（１３）とにより外管（１１）の四隅に
形成された冷媒の通るチヤンネルで、このチヤンネル
（１４）に補正コイル（６）が配設されている。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention,
(11) is an outer tube provided on the outer periphery of the superconducting coil (1) made of the superconducting twisted wire (1a), and (12) is the outer tube (1).
In the channels through which the refrigerant formed on both sides inside 1) passes,
A correction coil (6) is arranged on this channel (12). FIGS. 3 and 4 show a second embodiment of the present invention, in which (13) is a metal ribbon in which the outer circumference of the superconducting coil (1) is wrapped with an appropriate winding tension, (14). Is a channel through which the refrigerant formed by the inner surface of the outer tube (11) and the metal ribbon (13) at the four corners of the outer tube (11), through which the correction coil (6) is arranged. There is.
第５図はこの発明の第３の実施例を示すもので、（１
５）は超電導撚線（１ａ）からなる超電導コイル（１）
の中心部に形成された冷媒の通るチヤンネルで、このチ
ヤンネル（１５）に補正コイル（６）が配設されてい
る。FIG. 5 shows a third embodiment of the present invention.
5) is a superconducting coil (1) consisting of a superconducting twisted wire (1a)
A correction coil (6) is arranged in this channel (15), which is a channel formed in the center of the channel through which the refrigerant passes.
上記のように構成された第１，第２および第３の実施例
とも、補正コイル（６）はチヤンネル（１２），（１
４），（１５）の内部に配設されているので、補正コイ
ル（６）が機械的に損傷するようなことはない。In each of the first, second and third embodiments configured as described above, the correction coil (6) includes the channels (12), (1
The correction coil (6) is not mechanically damaged because it is arranged inside the components (4) and (15).
なお、第１の実施例および第２の実施例においては他の
チヤンネル（１２），（１４）に予備用の補正コイルを
配設してもよい。Incidentally, in the first and second embodiments, a spare correction coil may be arranged in the other channels (12) and (14).
以上説明したように、この発明の超電導コイルのクエン
チ検出装置は、外管の内部に形成されたチヤンネルに補
正コイルを配設したので、補正コイルが機械的に損傷す
るようなことはなく、信頼性の高いクエンチ検出を行な
うことができないという効果がある。As described above, in the quench detecting device for a superconducting coil of the present invention, the correction coil is arranged in the channel formed inside the outer tube, so that the correction coil is not mechanically damaged and is reliable. The effect is that quench detection with high property cannot be performed.
第１図はこの発明の第１の実施例を示す斜視図、第２図
は第１図の正断面図、第３図はこの発明の第２の実施例
を示す一部切欠き正面図、第４図は第３図の正断面図、
第５図はこの発明の第３の実施例を示す正断面図、第６
図は超電導コイルのクエンチ検出装置の説明図、第７図
は従来の超電導コイルのクエンチ検出装置の一例を示す
要部斜視図である。 （１）……超電導コイル、（６）……補正コイル、（１
１）……外管、（１２），（１４），（１５）……チヤ
ンネル。 なお、各図中、同一符号は同一又は相当部分を示す。1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a front sectional view of FIG. 1, and FIG. 3 is a partially cutaway front view showing a second embodiment of the present invention. 4 is a front sectional view of FIG.
FIG. 5 is a front sectional view showing a third embodiment of the present invention, and FIG.
FIG. 7 is an explanatory view of a quench detecting device for a superconducting coil, and FIG. 7 is a perspective view of a main part showing an example of a conventional quench detecting device for a superconducting coil. (1) ... superconducting coil, (6) ... correction coil, (1
1) ... Outer tube, (12), (14), (15) ... Channel. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
電導コイルのクエンチ発生を検出するために無誘導巻さ
れた補正コイルを備えた超電導コイルのクエンチ検出装
置において、前記外管の内部にチヤンネルが形成され、
このチヤンネルに前記補正コイルが配設されたことを特
徴とする超電導コイルのクエンチ検出装置。1. A quenching device for a superconducting coil, comprising: a superconducting coil disposed inside the outer tube; and a correction coil which is non-inductively wound to detect quenching of the superconducting coil. A channel is formed in
A quenching device for a superconducting coil, characterized in that the correction coil is arranged in this channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9028388A JPH0656811B2 (en) | 1988-04-14 | 1988-04-14 | Quench detector for superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9028388A JPH0656811B2 (en) | 1988-04-14 | 1988-04-14 | Quench detector for superconducting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01262606A JPH01262606A (en) | 1989-10-19 |
| JPH0656811B2 true JPH0656811B2 (en) | 1994-07-27 |
Family
ID=13994189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9028388A Expired - Lifetime JPH0656811B2 (en) | 1988-04-14 | 1988-04-14 | Quench detector for superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0656811B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006115126A1 (en) | 2005-04-19 | 2006-11-02 | Kabushiki Kaisha Toshiba | Superconducting coil quench detection method and device, and superconducting power storage unit |
-
1988
- 1988-04-14 JP JP9028388A patent/JPH0656811B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01262606A (en) | 1989-10-19 |
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