JPH0511647B2 - - Google Patents
Info
- Publication number
- JPH0511647B2 JPH0511647B2 JP12880487A JP12880487A JPH0511647B2 JP H0511647 B2 JPH0511647 B2 JP H0511647B2 JP 12880487 A JP12880487 A JP 12880487A JP 12880487 A JP12880487 A JP 12880487A JP H0511647 B2 JPH0511647 B2 JP H0511647B2
- Authority
- JP
- Japan
- Prior art keywords
- current supply
- superconducting
- supply lead
- liquid nitrogen
- container
- 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 - Fee Related
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 80
- 239000007788 liquid Substances 0.000 claims description 71
- 229910052757 nitrogen Inorganic materials 0.000 claims description 39
- 239000001307 helium Substances 0.000 claims description 35
- 229910052734 helium Inorganic materials 0.000 claims description 35
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 230000020169 heat generation Effects 0.000 description 4
- SWQJXJOGLNCZEY-BJUDXGSMSA-N helium-3 atom Chemical compound [3He] SWQJXJOGLNCZEY-BJUDXGSMSA-N 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は液体ヘリウム容器内に収容した液体ヘ
リウム中に浸漬された超電導コイルへ、常温環境
下におかれた励磁用電源から電流を供給するため
の電流供給リードの改良に関するものである。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides an excitation power source placed in a normal temperature environment to a superconducting coil immersed in liquid helium contained in a liquid helium container. This invention relates to improvements in current supply leads for supplying current from sources.
（従来の技術）
従来から、液体ヘリウム容器内に収容した液体
ヘリウム中に浸漬冷却された超電導装置の超電導
コイルへ、常温環境下におかれた励磁用電源から
電流を供給するための手段として、電流供給リー
ドが使用されてきている。超電導装置において
は、外部からの熱伝導、ふく射、および電流供給
リードからの侵入熱によつて、非常に高価な液体
ヘリウムが蒸発する。このうち、通常の超電導装
置においては、電流供給リードからの侵入熱が全
体の大半を占めることは周知の通りである。(Prior Art) Conventionally, as a means for supplying current from an excitation power source placed in a normal temperature environment to a superconducting coil of a superconducting device that is immersed and cooled in liquid helium contained in a liquid helium container, Current supply leads have been used. In superconducting devices, very expensive liquid helium evaporates due to external heat conduction, radiation, and heat intrusion from the current supply leads. Of these, it is well known that in a normal superconducting device, most of the heat penetrates from the current supply lead.
第２図は、従来の電流供給リードを適用した超
電導装置の一例を断面構成図にて示したものであ
る。第２図において、１は超電導線材を巻回して
なる超電導コイルであり、この超電導コイル１は
ステンレス等からなる液体ヘリウム容器２内に収
容した液体ヘリウム３中に浸漬されている。また
この液体ヘリウム容器２は、ステンレス等からな
る断熱真空容器４内に収容されている。一方、５
はステンレス等からなる直線状のガス管であり、
その上端部が断熱真空容器４の上面部から外部に
連通せられると共に、下端部が液体ヘリウム容器
２の上面部に溶接等により取付けられている。そ
して、このガス管６の内側には、銅材からなる電
流供給リード６が図示のように配設されている。
この電流供給リード６は、常温側端子７および超
電導コイル側端子８を有しており、常温側端子７
は常温環境下におかれた図示しない励磁用電源
に、また超電導コイル側端子８は超電導コイル１
にそれぞれ接続され、超電導コイル１に励磁用の
電流を供給できるようになつている。 FIG. 2 shows a cross-sectional configuration diagram of an example of a superconducting device to which a conventional current supply lead is applied. In FIG. 2, reference numeral 1 denotes a superconducting coil formed by winding a superconducting wire, and this superconducting coil 1 is immersed in liquid helium 3 contained in a liquid helium container 2 made of stainless steel or the like. The liquid helium container 2 is housed in a heat insulating vacuum container 4 made of stainless steel or the like. On the other hand, 5
is a straight gas pipe made of stainless steel, etc.
Its upper end is communicated with the outside from the upper surface of the insulating vacuum container 4, and its lower end is attached to the upper surface of the liquid helium container 2 by welding or the like. A current supply lead 6 made of copper is disposed inside the gas pipe 6 as shown in the figure.
This current supply lead 6 has a normal temperature side terminal 7 and a superconducting coil side terminal 8.
is connected to an excitation power source (not shown) placed in a normal temperature environment, and the superconducting coil side terminal 8 is connected to the superconducting coil 1.
The superconducting coils 1 are connected to each other so that an excitation current can be supplied to the superconducting coil 1.
さて、かかる構成の電流供給リードを備えた超
電導装置においては、電流供給リード６の常温側
端子７から超電導コイル側端子８までの間は、当
然のことながら超電導状態であり、ジユール熱が
発生する。そのため、この部分でのジユール発
熱、および常温側からの熱伝導による侵入熱を、
液体ヘリウム容器２から蒸発してガス管５を上昇
するガスヘリウム９にて冷却することにより、液
体ヘリウム容器２へ侵入する熱を抑制するように
している。 Now, in a superconducting device equipped with a current supply lead having such a configuration, the region between the room temperature side terminal 7 of the current supply lead 6 and the superconducting coil side terminal 8 is naturally in a superconducting state, and Joule heat is generated. . Therefore, the Joule heat generation in this part and the intrusion heat due to heat conduction from the room temperature side are
Heat entering the liquid helium container 2 is suppressed by cooling the gas helium 9 that evaporates from the liquid helium container 2 and rises up the gas pipe 5.
しかしこの場合、ジユール発熱はガスヘリウム
９で冷却されるものの、冷却しきれない発熱分は
液体ヘリウム容器２内に侵入する。そこで、上述
のジユール発熱を低減するためには、電流供給リ
ード６の断面積を大きくしかつ長さを短くすれば
よいが、この場合常温側端子７からの熱伝導によ
る侵入熱分が増加するといつた相互矛盾の関係が
ある。このため、従来ではこの関係を最適化し、
ジユール発熱に基づく侵入熱と、熱伝導に基づく
侵入熱の全体としての合計値が最小となるような
設計が行なわれているが、それにもかかわらず前
述のように超電導装置に対する侵入熱の大半は電
流供給リード６からのものとなつている。 However, in this case, although the Joule heat is cooled by the gas helium 9, the heat that cannot be cooled still enters the liquid helium container 2. Therefore, in order to reduce the above-mentioned module heat generation, it is possible to increase the cross-sectional area and shorten the length of the current supply lead 6, but in this case, the amount of heat that enters due to heat conduction from the normal temperature side terminal 7 increases. There is a mutually contradictory relationship. For this reason, conventionally this relationship has been optimized,
Although the design is such that the total value of the heat intrusion due to Joule heat generation and the heat intrusion due to thermal conduction is minimized, as mentioned above, most of the heat intrusion into the superconducting device is It is from the current supply lead 6.
（発明が解決しようとする問題点）
以上のように、従来から超電導装置に用いられ
ている電流供給リードにおいては、電流供給リー
ド本体から液体ヘリウム容器への侵入熱を十分に
低減できないことから、この侵入熱によつて高価
な液体ヘリウムが消費されてしまい、結果的に装
置運転上の経済的効果が低くなるという問題があ
つた。(Problems to be Solved by the Invention) As described above, in the current supply leads conventionally used in superconducting devices, it is not possible to sufficiently reduce the heat entering the liquid helium container from the current supply lead body. This intrusion heat consumes expensive liquid helium, resulting in a problem in that the economical effects of operating the device are reduced.
本発明は上述のような問題を解決するために成
されたもので、その目的は電流供給リード本体か
ら液体ヘリウム容器への侵入熱を著しく低減する
ことができ、侵入熱による液体ヘリウムの消費を
減少させて装置運転上の経済的効果を向上させる
ことが可能な超電導装置用電流供給リードを提供
することにある。 The present invention was made in order to solve the above-mentioned problems, and its purpose is to significantly reduce the heat intrusion from the current supply lead body into the liquid helium container, and to reduce the consumption of liquid helium due to the intrusion heat. It is an object of the present invention to provide a current supply lead for a superconducting device that can reduce the amount of electricity and improve the economical effect on device operation.
［発明の効果］
（問題点を解決するための手段）
上記の目的を達成するために本発明では、液体
ヘリウム容器内に収容した液体ヘリウム中に浸漬
された超電導コイルへ、常温環境下におかれた励
磁用電源から電流を供給するための電流供給リー
ドにおいて、電流供給リード本体の常温側端子か
ら超電導コイル側端子に至る途中、液体窒素が収
容されかつ電流供給リード本体が貫通して設けら
れる液体窒素容器を配設し、電流供給リード本体
の常温側端子から液体窒素容器までの間は銅ある
いは銅合金材を用い、また電流供給リード本体の
液体窒素容器から超電導コイル側端子までの間は
液体窒素温度以上で超電導状態を示す高温超電導
材を用いて構成するようにしたことを特徴とす
る。[Effects of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a superconducting coil immersed in liquid helium contained in a liquid helium container under a normal temperature environment. In the current supply lead for supplying current from the excitation power source, liquid nitrogen is contained and the current supply lead body is provided penetrating the part of the current supply lead body from the normal temperature side terminal to the superconducting coil side terminal. A liquid nitrogen container is installed, and copper or copper alloy material is used between the room temperature side terminal of the current supply lead body and the liquid nitrogen container, and copper or copper alloy material is used between the liquid nitrogen container of the current supply lead body and the superconducting coil side terminal. It is characterized in that it is constructed using a high-temperature superconducting material that exhibits a superconducting state at a temperature higher than liquid nitrogen temperature.
（作用）
上述の電流供給リードにおいて、高温超電導材
からなるリード部分は常に超電導状態に保たれる
ため、液体ヘリウム容器への侵入熱は熱伝導分の
みとなる。一方、高温超電導材はセラミツクス系
であるため、熱伝導率は残りのリード部分を構成
する銅あるいは銅合金の熱伝導率に比べて極めて
小さい。従つて、電流供給リード本体から液体ヘ
リウム容器への侵入熱は、従来のものに比べて極
めて少なくできることになる。(Function) In the above-described current supply lead, the lead portion made of high-temperature superconducting material is always maintained in a superconducting state, so that only the amount of heat that enters the liquid helium container is due to thermal conduction. On the other hand, since the high-temperature superconducting material is ceramic-based, its thermal conductivity is extremely low compared to that of the copper or copper alloy that constitutes the remaining lead portions. Therefore, the amount of heat that enters the liquid helium container from the current supply lead body can be significantly reduced compared to the conventional one.
（実施例）
以下、本発明を図面に示す一実施例を参照して
説明する。(Example) The present invention will be described below with reference to an example shown in the drawings.
第１図は、本発明による電流供給リードを適用
した超電導装置の構成例を示す断面図であり、第
２図と同一部分には同一符号を付してその説明を
省略し、ここでは異なる部分についてのみ述べ
る。 FIG. 1 is a sectional view showing an example of the configuration of a superconducting device to which the current supply lead according to the present invention is applied. The same parts as in FIG. I will only talk about.
本実施例では第１図に示すように、前述の常温
側端子７から超電導コイル側端子８にかけて設け
られたガス管５のほぼ中間部に、液体窒素１０が
収容されかつ電流供給リード１１が貫通して設け
られるステンレス等からなる液体窒素容器１２を
配設している。また、この電流供給リード１１
は、その常温側端子７から液体窒素容器１２まで
のリード部分１１ａは銅材を用い、液体窒素容器
１２から超電導コイル側端子８までのリード部分
１１ｂは液体窒素温度（77k）以上で超電導状態
を示すセラミツクス系の高温超電導材を用いてそ
れぞれ構成し、この各リード部分１１ａ，１１ｂ
の反端子側を液体窒素容器１２内の中間接続部１
３で接続している。さらにガス管５は、液体窒素
容器１２より上側部分をガス窒素１４の流通部分
５ａとし、液体窒素容器１２より下側部分は図示
のように断熱真空容器４の外部に連通する分岐管
を側方に形成してガスヘリウムの流通部分５ｂと
している。 In this embodiment, as shown in FIG. 1, liquid nitrogen 10 is contained in a substantially intermediate portion of the gas pipe 5 provided from the normal temperature side terminal 7 to the superconducting coil side terminal 8, and a current supply lead 11 is passed through the gas pipe 5. A liquid nitrogen container 12 made of stainless steel or the like is provided. In addition, this current supply lead 11
The lead portion 11a from the normal temperature side terminal 7 to the liquid nitrogen container 12 is made of copper material, and the lead portion 11b from the liquid nitrogen container 12 to the superconducting coil side terminal 8 maintains a superconducting state at a temperature higher than the liquid nitrogen temperature (77K). Each lead portion 11a, 11b is constructed using a ceramic-based high-temperature superconducting material as shown in FIG.
Connect the opposite side of the terminal to the intermediate connection part 1 in the liquid nitrogen container 12.
Connected with 3. Further, the gas pipe 5 has a portion above the liquid nitrogen container 12 as a flow portion 5a for the gas nitrogen 14, and a portion below the liquid nitrogen container 12 as a side branch pipe communicating with the outside of the insulated vacuum container 4. The helium gas flow portion 5b is formed by forming a helium gas flow portion 5b.
以上のように構成した電流供給リードにおい
て、電流供給リード１１のうち、高温超電導材か
らなるリード部分１１ｂは超電導状態に保たれる
ため、ジユール熱は発生しない。このため、電流
供給リード１１から液体ヘリウム容器２内に侵入
する熱は熱伝導分のみとなる。一方、高温超電導
材はセラミツクス系であるため、その熱伝導率は
残りのリード部分１１ａを構成する銅材の熱伝導
率に比べて極めて小さいことから、電流供給リー
ド１１から液体ヘリウム容器２への侵入熱は、従
来のものに比べて極めて少なくなる。また、高温
超電導材からなるリード部分１１ｂは液体ヘリウ
ム容器２から蒸発するガスヘリウム９によつて冷
却されるため、その分だけより一層侵入熱は少な
くなる。一方、銅材からなるリード部分１１ａか
ら液体窒素容器１２内には、ジユール発熱分と常
温側端子７からの熱伝導分が液体窒素容器１２か
ら蒸発するガス窒素１４によつて冷却された後に
侵入し、液体窒素に対する熱負荷となる。この場
合、液体窒素のコストは液体ヘリウムのコストに
比べてはるかに安い（約1/40）ため、経済的効果
が低下することはない。 In the current supply lead configured as described above, the lead portion 11b made of the high temperature superconducting material of the current supply lead 11 is maintained in a superconducting state, so that Joule heat is not generated. Therefore, the amount of heat that enters into the liquid helium container 2 from the current supply lead 11 is only due to thermal conduction. On the other hand, since the high-temperature superconducting material is ceramic-based, its thermal conductivity is extremely small compared to that of the copper material that constitutes the remaining lead portion 11a. Invasion heat is extremely reduced compared to conventional systems. Furthermore, since the lead portion 11b made of a high-temperature superconducting material is cooled by the gas helium 9 evaporated from the liquid helium container 2, the amount of heat intrusion is further reduced accordingly. On the other hand, from the lead portion 11a made of copper material into the liquid nitrogen container 12, the Joule heat generation and the heat conduction from the normal temperature side terminal 7 enter after being cooled by the gas nitrogen 14 evaporating from the liquid nitrogen container 12. However, it becomes a heat load on liquid nitrogen. In this case, the cost of liquid nitrogen is much lower (approximately 1/40) than the cost of liquid helium, so the economic effect will not decrease.
上述したように本実施例では、電流供給リード
の常温側端子７から超電導コイル側端子８に位置
するガス管５の中間部に、液体窒素１０が収容さ
れかつ電流供給リード１１が貫通して設けられる
液体窒素容器１２を配設し、電流供給リード１１
の常温側端子７から液体窒素容器１２までの部分
１１ａは銅材を用い、また電流供給リード１１の
液体窒素容器１２から超電導コイル側端子８まで
の部分１１ｂは液体窒素温度以上で超電導状態を
示すセラミツクス系の高温超電導材を用いて構成
するようにしたものである。 As described above, in this embodiment, liquid nitrogen 10 is accommodated in the intermediate portion of the gas pipe 5 located from the normal temperature side terminal 7 of the current supply lead to the superconducting coil side terminal 8, and the current supply lead 11 is provided so as to penetrate therethrough. A liquid nitrogen container 12 is provided, and a current supply lead 11 is connected to the liquid nitrogen container 12.
A portion 11a from the normal temperature side terminal 7 to the liquid nitrogen container 12 is made of copper material, and a portion 11b of the current supply lead 11 from the liquid nitrogen container 12 to the superconducting coil side terminal 8 exhibits a superconducting state at a temperature higher than the liquid nitrogen temperature. It is constructed using a ceramic-based high-temperature superconducting material.
従つて、電流供給リード１１から液体ヘリウム
容器２への侵入熱を著しく低減することができ、
侵入熱による液体ヘリウム３の消費を大幅に減ら
すことが可能となる。また、電流供給リード１１
の冷却を液体ヘリウム３および液体窒素１０の双
方によつて行ない、かつ液体窒素１０のコストは
液体ヘリウム３のコストに比べてはるかに安いた
め、装置運転上の経済的効果を著しく向上させる
ことが可能となる。さらに、一般に磁場の弱いと
ころに電流供給リード１１を設置できるため、高
温超電導材からなるリード部分１１ｂの電磁力支
持も比較的容易で、かつ電流容量もかなり大きく
とれることから、比較的容易に製作することがで
きるといつた利点も得られるものである。 Therefore, the heat entering the liquid helium container 2 from the current supply lead 11 can be significantly reduced.
It becomes possible to significantly reduce the consumption of liquid helium 3 due to intrusion heat. In addition, the current supply lead 11
Since the cooling is performed by both liquid helium 3 and liquid nitrogen 10, and the cost of liquid nitrogen 10 is much lower than that of liquid helium 3, the economical effect on device operation can be significantly improved. It becomes possible. Furthermore, since the current supply lead 11 can generally be installed in a place where the magnetic field is weak, it is relatively easy to support the electromagnetic force of the lead portion 11b made of high-temperature superconducting material, and the current capacity can be quite large, so it is relatively easy to manufacture. It also has the advantage of being able to do so.
尚、本発明は上述した実施例に限定されるもの
ではなく、次のようにしても同様に実施すること
ができるものである。 It should be noted that the present invention is not limited to the embodiments described above, but can be similarly implemented in the following manner.
上記実施例では、常温側端子７から液体窒素容
器１２までのリード部分１１ａは銅材を用いが、
これに限らず銅合金材を用いるようにしてもよ
い。 In the above embodiment, the lead portion 11a from the normal temperature side terminal 7 to the liquid nitrogen container 12 is made of copper material.
The material is not limited to this, and a copper alloy material may also be used.
その他、本発明はその要旨を変更しない範囲
で、種々に変形して実施することができるもので
ある。 In addition, the present invention can be modified and implemented in various ways without changing the gist thereof.
［発明の効果］
以上説明したように本発明によれば、電流供給
リード本体の常温側端子から超電導コイル側端子
に至る途中に、液体窒素が収容されかつ電流供給
リード本体が貫通して設けられる液体窒素容器を
配設し、電流供給リード本体の常温側端子から液
体窒素容器までの間は銅あるいは銅合金材を用
い、また電流供給リード本体の液体窒素容器から
超電導コイル側端子までの間は液体窒素温度以上
で超電導状態を示す高温超電導材を用いて構成す
るようにしたので、電流供給リード本体から液体
ヘリウム容器への侵入熱を著しく低減することが
でき、侵入熱による液体ヘリウムの消費を減少さ
せて装置運転上の経済的効果を向上させることが
可能な超電導装置用電流供給リードが提供でき
る。[Effects of the Invention] As explained above, according to the present invention, liquid nitrogen is contained and the current supply lead body is provided penetrating the current supply lead body on the way from the normal temperature side terminal to the superconducting coil side terminal. A liquid nitrogen container is installed, and copper or copper alloy material is used between the room temperature side terminal of the current supply lead body and the liquid nitrogen container, and copper or copper alloy material is used between the liquid nitrogen container of the current supply lead body and the superconducting coil side terminal. Since it is constructed using a high-temperature superconducting material that exhibits a superconducting state above the temperature of liquid nitrogen, it is possible to significantly reduce the heat that enters the liquid helium container from the current supply lead body, and the consumption of liquid helium due to the heat that enters is reduced. It is possible to provide a current supply lead for a superconducting device that can reduce the amount of electricity and improve the economical effect on device operation.
第１図は本発明による電流供給リードを適用し
た超電導装置の一実施例を示す断面構成図、第２
図は従来の電流供給リードを適用した超電導装置
を示す断面構成図である。
１……超電導コイル、２……液体ヘリウム容
器、３……液体ヘリウム、４……断熱真空容器、
５……ガス管、６……電流供給リード、７……常
温側端子、８……超電導コイル側端子、９……ガ
スヘリウム、１０……液体窒素、１１……電流供
給リード、１２……液体窒素容器、１３……中間
接続部、１４……ガス窒素。
FIG. 1 is a cross-sectional configuration diagram showing one embodiment of a superconducting device to which the current supply lead according to the present invention is applied, and FIG.
The figure is a cross-sectional configuration diagram showing a superconducting device to which a conventional current supply lead is applied. 1...Superconducting coil, 2...Liquid helium container, 3...Liquid helium, 4...Insulated vacuum container,
5... Gas pipe, 6... Current supply lead, 7... Room temperature side terminal, 8... Superconducting coil side terminal, 9... Gas helium, 10... Liquid nitrogen, 11... Current supply lead, 12... Liquid nitrogen container, 13... intermediate connection, 14... gas nitrogen.
Claims (1)
中に浸漬された超電導コイルへ、常温環境下にお
かれた励磁用電源から電流を供給するための電流
供給リードにおいて、電流供給リード本体の常温
側端子から超電導コイル側端子に至る途中に、液
体窒素が収容されかつ電流供給リード本体が貫通
して設けられる液体窒素容器を配設し、電流供給
リード本体の常温側端子から液体窒素容器までの
間は銅あるいは銅合金材を用い、また電流供給リ
ード本体の液体窒素容器から超電導コイル側端子
までの間は液体窒素温度以上で超電導状態を示す
高温超電導材を用いて構成するようにしたことを
特徴とする超電導装置用電流供給リード。 ２ 高温超電導材はセラミツク系のものであるこ
とを特徴とする特許請求の範囲第１項記載の短絡
抑制用超電導装置。[Scope of Claims] 1. A current supply lead for supplying current from an excitation power supply placed in a normal temperature environment to a superconducting coil immersed in liquid helium contained in a liquid helium container. A liquid nitrogen container containing liquid nitrogen and through which the current supply lead body penetrates is provided on the way from the room temperature side terminal of the main body to the superconducting coil side terminal, and liquid nitrogen is supplied from the room temperature side terminal of the current supply lead body. Copper or copper alloy material is used for the lead up to the container, and high-temperature superconducting material that exhibits a superconducting state above the liquid nitrogen temperature is used for the current supply lead from the liquid nitrogen container to the superconducting coil side terminal. A current supply lead for superconducting equipment characterized by: 2. The superconducting device for suppressing short circuits according to claim 1, wherein the high-temperature superconducting material is ceramic-based.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12880487A JPS63292610A (en) | 1987-05-26 | 1987-05-26 | Current supply lead for superconducting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12880487A JPS63292610A (en) | 1987-05-26 | 1987-05-26 | Current supply lead for superconducting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63292610A JPS63292610A (en) | 1988-11-29 |
| JPH0511647B2 true JPH0511647B2 (en) | 1993-02-16 |
Family
ID=14993836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12880487A Granted JPS63292610A (en) | 1987-05-26 | 1987-05-26 | Current supply lead for superconducting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63292610A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6476707A (en) * | 1987-09-17 | 1989-03-22 | Mitsubishi Electric Corp | Current lead |
| JPH0810939Y2 (en) * | 1990-06-29 | 1996-03-29 | 三菱重工業株式会社 | Superconducting current lead |
| JP2598164B2 (en) * | 1990-10-29 | 1997-04-09 | 中部電力株式会社 | Non-inductive magnetic shield type bushing using high temperature superconducting material |
| JP2510373B2 (en) * | 1992-03-12 | 1996-06-26 | 中部電力株式会社 | Magnetic shield type bushing using composite superconductor |
| DE112011103478T5 (en) * | 2010-10-14 | 2013-08-01 | Chubu University Educational Foundation | Conductor device |
| JP6104007B2 (en) * | 2013-03-22 | 2017-03-29 | 株式会社神戸製鋼所 | Current supply device |
-
1987
- 1987-05-26 JP JP12880487A patent/JPS63292610A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63292610A (en) | 1988-11-29 |
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