JPH0710006B2 - Superconducting device - Google Patents
Superconducting deviceInfo
- Publication number
- JPH0710006B2 JPH0710006B2 JP60106964A JP10696485A JPH0710006B2 JP H0710006 B2 JPH0710006 B2 JP H0710006B2 JP 60106964 A JP60106964 A JP 60106964A JP 10696485 A JP10696485 A JP 10696485A JP H0710006 B2 JPH0710006 B2 JP H0710006B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- liquid helium
- container
- switch
- heat insulating
- 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
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/30—Devices switchable between superconducting and normal states
- H10N60/35—Cryotrons
- H10N60/355—Power cryotrons
Landscapes
- 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、超電導マグネットを永久電流状態で使うため
の超電導スイッチを備えた超電導装置に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a superconducting device including a superconducting switch for using a superconducting magnet in a permanent current state.
従来、超電導スイッチは、第２図に示すように熱絶縁層
に覆われた構成になっており、スイッチ全体が液体ヘリ
ウム容器に浸して用いられている。ここで、図中１は超
電導マグネット本体、２は液体ヘリウム容器、３は超電
導スイッチ本体であるまた、４は超電導スイッチを構成
する超電導線、５は超電導状態を破るためのヒータ線、
７は該超電導線を巻回すための巻枠である。12は超電導
状態破壊に要するヒータ電力を低減させるための熱絶縁
層であり、通常、FRP等の容器及び含浸用に注入された
エポキシ樹脂で構成されている。又、13は液体ヘリウム
である。Conventionally, a superconducting switch has a structure in which it is covered with a heat insulating layer as shown in FIG. 2, and the entire switch is used by being immersed in a liquid helium container. Here, in the figure, 1 is a superconducting magnet body, 2 is a liquid helium container, 3 is a superconducting switch body, 4 is a superconducting wire constituting the superconducting switch, 5 is a heater wire for breaking the superconducting state,
Reference numeral 7 is a winding frame for winding the superconducting wire. Reference numeral 12 is a heat insulating layer for reducing the heater power required for destruction of the superconducting state, and is usually composed of a container such as FRP and an epoxy resin injected for impregnation. Further, 13 is liquid helium.
しかしながら、この種の超電導スイッチには次のような
問題があった。即ち、超電導線４は液体ヘリウムと断然
状態にあるため、熱的に極めて不安定な状態にあり、超
電導スイッチがクウェンチを起こすことがあった。However, this type of superconducting switch has the following problems. That is, since the superconducting wire 4 is in a state in which the superconducting wire 4 is liquid helium, the superconducting switch 4 may be in a quench state due to thermal instability.
本発明の目的は、スイッチオン時に超電導ゲート線を液
体ヘリウムで安定に冷却し、しかも、スイッチオフ時に
は超電導ゲート線の超電導状態を破壊するのに要するヒ
ータ電力を最小限に押さえることのできる超電導スイッ
チを備えた超電導装置を提供することを目的とする。It is an object of the present invention to stably cool a superconducting gate wire with liquid helium at the time of switching on, and further to minimize the heater power required to destroy the superconducting state of the superconducting gate wire at the time of switching off. An object of the present invention is to provide a superconducting device provided with.
本発明の骨子は、スイッチオン時に超電導ゲート線を液
体ヘリウムに浸漬して冷却し、スイッチオフ時には超電
導ゲート線をヘリウムガス雰囲気に置くことが出来るよ
うな容器の構造にある。The essence of the present invention is the structure of a container in which the superconducting gate wire can be immersed in liquid helium for cooling when the switch is turned on, and the superconducting gate wire can be placed in a helium gas atmosphere when the switch is turned off.
すなわち、本発明の超電導装置は、液体ヘリウムを収納
した極低温容器と、この極低温容器内の前記液体ヘリウ
ム中に配設され、側面および上部が断熱壁で覆われ下部
が前記液体ヘリウム中に開放された断熱容器と、この断
熱容器内に収容され、超電導ゲート線およびこの超電導
ゲート線を加熱するヒータが設けられた巻線部と、前記
断熱容器の上部を貫通して一端が前記液体ヘリウム中に
延びる冷媒通路と、この冷媒通路に設けられ該冷媒通路
の開閉を行うバルブと、前記ヒータの通電時に前記バル
ブを閉じ、前記ヒータの通電停止時には前記バルブを開
くように制御する制御手段とを備えて成ることを特徴と
している。That is, the superconducting device of the present invention, a cryogenic container containing liquid helium, and disposed in the liquid helium in the cryogenic container, the side surface and the upper part is covered with a heat insulating wall, the lower part in the liquid helium. An opened heat-insulating container, a winding part housed in the heat-insulating container and provided with a superconducting gate wire and a heater for heating the superconducting gate wire, and one end of the liquid helium penetrating the upper part of the heat-insulating container. A refrigerant passage extending therein; a valve provided in the refrigerant passage for opening and closing the refrigerant passage; and a control means for controlling the valve to be closed when the heater is energized and to be opened when the heater is de-energized. It is characterized by comprising.
スイッチオン時には、該バルブを開とする。前記超電導
ゲート線は液体ヘリウムに浸漬された状態となり、安定
に冷却される。一方、スイッチオフ時には、前記バルブ
を閉とし、超電導ゲート線と共に巻き回されたヒータ線
に通電する。ヒータ線が加熱されると、まわりの液体ヘ
リウムは蒸発してヘリウムガスとなるが、前記断熱容器
上部のバルブが閉じられているため、ヘリウムガスは前
記断熱容器の上部に溜り始め、ついには超電導ゲート線
巻線部のまわりはヘリウムガス雰囲気となり、超電導ゲ
ート線の超電導状態が破れて、超電導スイッチはオフ状
態となる。When the switch is turned on, the valve is opened. The superconducting gate wire is immersed in liquid helium and cooled stably. On the other hand, when the switch is turned off, the valve is closed to energize the heater wire wound with the superconducting gate wire. When the heater wire is heated, the surrounding liquid helium evaporates and becomes helium gas, but since the valve on the upper part of the heat insulating container is closed, the helium gas starts to accumulate in the upper part of the heat insulating container, and finally superconductivity is reached. A helium gas atmosphere is formed around the gate wire winding portion, the superconducting state of the superconducting gate wire is broken, and the superconducting switch is turned off.
本発明によれば、スイッチオン時には超電導ゲート線を
液体ヘリウムで浸漬冷却することができ、極めて安定し
た冷却状態を保持できる。一方、スイッチオフ時には超
電導ゲート線のまわりがヘリウムガス雰囲気となるた
め、スイッチオフ状態を保持するためのヒータ電力を少
なくすることが出来る。According to the present invention, the superconducting gate wire can be immersed and cooled in liquid helium when the switch is turned on, and an extremely stable cooling state can be maintained. On the other hand, since the helium gas atmosphere is present around the superconducting gate line when the switch is turned off, it is possible to reduce the heater power for maintaining the switch off state.
断熱容器の下部が液体ヘリウム中に開放されているの
で、スイッチオフ時からスイッチオン時に切換えると、
速やかに液体ヘリウムが開放されている断熱容器の下部
から該容器内に侵入し、容器内は液体ヘリウムで満たさ
れ、スイッチオフ時からスイッチオンの切換えが短時間
で行える。Since the lower part of the heat insulation container is opened in liquid helium, when switching from the switch off to the switch on,
Liquid helium quickly enters the inside of the heat-insulating container from which it is opened, and the inside of the container is filled with liquid helium, so that switching on and off can be performed in a short time.
以下、本発明の図示の実施例によって説明する。 Hereinafter, the present invention will be described with reference to illustrated embodiments.
第１図は本発明の一実施例に係わる超電導スイッチを備
えた超電導装置の概略構造を示す断面図である。図中１
は超電導マグネットであり、該超電導マグネット１は液
体ヘリウム容器２の中に超電導スイッチ３と共に浸漬さ
れている。超電導ゲート線４およびヒータ線５は冷却穴
６のある巻枠７に密巻きに巻かれている。超電導ゲート
線４巻線部は、下方が液体ヘリウム13に開放された断熱
容器８に収納されている。前記断熱容器８上部には液体
ヘリウム容器２に通ずる冷媒通路９および該通路９を開
閉するバルブ10を備えている。超電導マグネット１と超
電導スイッチ３を結ぶ接続線11は断熱容器８の外壁及び
巻枠等を利用して堅固に固定されている。FIG. 1 is a sectional view showing a schematic structure of a superconducting device having a superconducting switch according to an embodiment of the present invention. 1 in the figure
Is a superconducting magnet, and the superconducting magnet 1 is immersed in a liquid helium container 2 together with a superconducting switch 3. The superconducting gate wire 4 and the heater wire 5 are tightly wound around a winding frame 7 having a cooling hole 6. The superconducting gate wire 4 winding portion is housed in a heat insulating container 8 whose lower part is open to liquid helium 13. A refrigerant passage 9 communicating with the liquid helium container 2 and a valve 10 for opening and closing the passage 9 are provided above the heat insulating container 8. The connecting wire 11 connecting the superconducting magnet 1 and the superconducting switch 3 is firmly fixed by using the outer wall of the heat insulating container 8 and the winding frame.
スイッチ３をオンする時にはバルブ10を開とする。液体
ヘリウム13は超電導ゲート線４巻線部と断熱容器８との
間、冷却穴６、超電導ゲート線４巻線間の隙間に入り込
み、超電導ゲート線４は安定に冷却されて超電導状態を
保つ。When the switch 3 is turned on, the valve 10 is opened. The liquid helium 13 enters between the winding portion of the superconducting gate wire 4 and the heat insulating container 8, the cooling hole 6, and the gap between the windings of the superconducting gate wire 4, and the superconducting gate wire 4 is cooled stably and maintains the superconducting state.
一方、スイッチ３をオフする時にはバルブ10を閉とし
て、ヒータ線５に通電する。ヒータ線５が加熱される
と、まわりの液体ヘリウム13は蒸発してヘリウムガスと
なるが、前記断熱容器８上部のバルブ10が閉じられてい
るため、ヘリウムガスは前記断熱容器８の上部に溜り始
め、ついには超電導ゲート線４巻線部のまわりはヘリウ
ムガス雰囲気となり、超電導ゲート線は容易に加熱され
て、超電導状態が破れ、超電導スイッチ３はオフ状態と
なる。On the other hand, when the switch 3 is turned off, the valve 10 is closed and the heater wire 5 is energized. When the heater wire 5 is heated, the surrounding liquid helium 13 evaporates and becomes helium gas, but since the valve 10 on the upper part of the heat insulating container 8 is closed, the helium gas collects on the upper part of the heat insulating container 8. At first, finally, a helium gas atmosphere is formed around the winding portion of the superconducting gate wire 4, the superconducting gate wire is easily heated, the superconducting state is broken, and the superconducting switch 3 is turned off.
なお、本発明は上述した実施例に限定されるものではな
い。例えば、前記超電導ゲート線の材料や断熱容器の材
料・形状等は、仕様に応じて適宜定めればよい。また、
ヒータ電力が大きくてよければ、断熱容器の断熱性は問
わない。その他、本発明の要旨を逸脱以内範囲で、種々
変型して実施することができる。The present invention is not limited to the above embodiment. For example, the material of the superconducting gate wire and the material and shape of the heat insulating container may be appropriately determined according to the specifications. Also,
The heat insulating property of the heat insulating container does not matter as long as the heater power is large. In addition, various modifications may be made without departing from the scope of the present invention.
第１図は本発明の一実施例に係る超電導スイッチを備え
た超電導装置を示す断面図、第２図は従来の超電導スイ
ッチを備えた超電導装置を示す断面図である。 １……超電導マグネット、２……液体ヘリウム容器、３
……超電導スイッチ本体、４……超電導線、５……ヒー
タ線、８……断熱容器、10……バルブ、12……熱絶縁
層。FIG. 1 is a sectional view showing a superconducting device having a superconducting switch according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a superconducting device having a conventional superconducting switch. 1 ... Superconducting magnet, 2 ... Liquid helium container, 3
...... Superconducting switch body, 4 ... Superconducting wire, 5 ... Heater wire, 8 ... Insulation container, 10 ... Valve, 12 ... Heat insulation layer.
Claims (1)
面および上部が断熱壁で覆われ下部が前記液体ヘリウム
中に開放された断熱容器と、 この断熱容器内に収容され、超電導ゲート線およびこの
超電導ゲート線を加熱するヒータが設けられた巻線部
と、 前記断熱容器の上部を貫通して一端が前記液体ヘリウム
中に延びる冷媒通路と、 この冷媒通路に設けられ該冷媒通路の開閉を行うバルブ
と、 前記ヒータの通電時に前記バルブを閉じ、前記ヒータの
通電停止時には前記バルブを開くように制御する制御手
段と を備えて成ることを特徴とする超電導装置。1. A cryogenic container containing liquid helium, and heat insulation disposed in the liquid helium in the cryogenic container, a side surface and an upper part thereof being covered with a heat insulating wall, and a lower part opened to the liquid helium. A container, a winding portion housed in the heat insulating container and provided with a superconducting gate wire and a heater for heating the superconducting gate wire, and a refrigerant having one end extending through the upper portion of the heat insulating container into the liquid helium. A passage, a valve provided in the refrigerant passage for opening and closing the refrigerant passage, and a control means for controlling the valve to close when the heater is energized and to open the valve when the heater is de-energized. A superconducting device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106964A JPH0710006B2 (en) | 1985-05-21 | 1985-05-21 | Superconducting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106964A JPH0710006B2 (en) | 1985-05-21 | 1985-05-21 | Superconducting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61265880A JPS61265880A (en) | 1986-11-25 |
| JPH0710006B2 true JPH0710006B2 (en) | 1995-02-01 |
Family
ID=14447001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60106964A Expired - Lifetime JPH0710006B2 (en) | 1985-05-21 | 1985-05-21 | Superconducting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710006B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4790752B2 (en) * | 2008-04-28 | 2011-10-12 | 株式会社日立製作所 | Superconducting magnet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS522797B2 (en) * | 1971-10-27 | 1977-01-24 | ||
| JPS5998572A (en) * | 1982-11-27 | 1984-06-06 | Jeol Ltd | Thermal switch for superconductive magnet device |
-
1985
- 1985-05-21 JP JP60106964A patent/JPH0710006B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61265880A (en) | 1986-11-25 |
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