JPH06283768A - Superconducting current limiter - Google Patents
Superconducting current limiterInfo
- Publication number
- JPH06283768A JPH06283768A JP5072453A JP7245393A JPH06283768A JP H06283768 A JPH06283768 A JP H06283768A JP 5072453 A JP5072453 A JP 5072453A JP 7245393 A JP7245393 A JP 7245393A JP H06283768 A JPH06283768 A JP H06283768A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- coil
- container
- superconducting
- helium gas
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 239000001307 helium Substances 0.000 claims abstract description 24
- 229910052734 helium Inorganic materials 0.000 claims abstract description 24
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 23
- 239000010949 copper Substances 0.000 abstract description 21
- 229910052802 copper Inorganic materials 0.000 abstract description 20
- 230000000670 limiting effect Effects 0.000 abstract description 18
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 239000007788 liquid Substances 0.000 description 11
- 239000002887 superconductor Substances 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 230000004907 flux Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液体窒素を用いずヘリ
ウムガスを冷却媒体として用いた超電導限流器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting fault current limiter using helium gas as a cooling medium without using liquid nitrogen.
【０００２】[0002]
【従来の技術】従来から、計装器具等の各種装置機器に
おいて、事故等により発生する過電流の流れを防止する
継電器の一種である限流器が用いられている。特に、近
年開発の著しい超電導機器では、過電流により使用して
いる超電導体の超電導特性が変化すると、機器が回復不
能に損傷するおそれがある。そのため、各種の限流器が
検討、提案されている。2. Description of the Related Art Conventionally, a current limiting device which is a kind of relay for preventing a flow of an overcurrent generated due to an accident or the like has been used in various devices such as instrumentation equipment. In particular, in a superconducting device that has been developed remarkably in recent years, if the superconducting property of the superconductor used changes due to overcurrent, the device may be irreversibly damaged. Therefore, various current limiting devices have been studied and proposed.
【０００３】一方、超電導体による磁束の遮蔽（シール
ド）効果を利用した磁気遮蔽（磁気シールド）型限流器
が提案されている。例えば、第４３回春季低温工学・超
電導学会予稿集、第３６頁（Ｂ１−１４）には、外径１
０ｍｍ、厚さ１ｍｍ、長さ７０ｍｍの金属超電導体を用
い、液体ヘリウム（４．２Ｋ）で、限流作用の原理が実
証されている。On the other hand, a magnetic shield type fault current limiter utilizing the shielding effect of magnetic flux by a superconductor has been proposed. For example, in the 43rd Spring Cryogenic Engineering and Superconductivity Society Proceedings, page 36 (B1-14), the outer diameter 1
The principle of current limiting action has been demonstrated with liquid helium (4.2 K) using a metal superconductor of 0 mm, thickness 1 mm, and length 70 mm.
【０００４】また、「電気学会静止器研究会 ＳＡ−９
１−６７」第１１１〜１１７頁では、液体ヘリウム冷却
における限流器での円筒超電導体のヒステリシス損失を
モデル計算し、液体窒素温度を越える臨界温度を有する
超電導性組成物では、その損失は問題ないとし、バルク
酸化物超電導性組成物を液体窒素（７７Ｋ）で作動する
限流器が提案され、更に、板状のこのような組成物を積
層する超電導磁気シールド体を用いる限流素子が提案さ
れている。[0004] In addition, "The Institute of Electrical Engineers of Japan static equipment study group SA-9
1-67 ”, pp. 111-117, modeled the hysteresis loss of a cylindrical superconductor in a current limiter in liquid helium cooling, and in a superconducting composition having a critical temperature above the liquid nitrogen temperature, the loss was a problem. A current limiter in which a bulk oxide superconducting composition is operated by liquid nitrogen (77 K) is proposed, and further a current limiting element using a superconducting magnetic shield body in which such a plate-shaped composition is laminated is proposed. Has been done.
【０００５】また、外部コイルに所定以上の過電流が流
れた場合、超電導体全体が同時にクエンチして限流作用
が働き、いわゆるＯＮ−ＯＦＦ制御で単にスイッチ機能
を持たせた限流器のみならず、単なるスイッチ機能のみ
の限流器を改良し、外部コイルに流れる過電流の大小に
応じて限流作用を調節することができる限流器も開発さ
れている。Further, when an overcurrent of a predetermined amount or more flows in the external coil, the entire superconductor is quenched at the same time and a current limiting action works, and only a current limiting device having a so-called ON-OFF control has a switching function. Instead, a current limiting device having only a switching function has been improved, and a current limiting device capable of adjusting the current limiting action according to the magnitude of the overcurrent flowing through the external coil has been developed.
【０００６】これらの限流作用の原理とは、図２に示す
ようなものである。磁気シールド体２が冷却容器で充分
に冷却されているとき、磁気シールド体２は超電導状態
となっていて定常時では、図２（ａ）に示すように、マ
イスナー効果により、超電導円筒体たる磁気シールド体
２の内部に磁束線５が侵入しないのみならず、磁気シー
ルド体２に囲まれた筒状の空間にも磁束線５は侵入しな
い。従って、コイル３を貫く磁束線５は磁気シールド体
２の外側に限られるので、コイル３のインダクタンスは
非常に小さい。なお、この状態で、筒状の磁気シールド
体２の中心部は磁気が遮蔽されている。The principle of the current limiting action is as shown in FIG. When the magnetic shield body 2 is sufficiently cooled in the cooling container, the magnetic shield body 2 is in a superconducting state and in a steady state, as shown in FIG. Not only the magnetic flux lines 5 do not enter the inside of the shield body 2, but also the magnetic flux lines 5 do not enter the cylindrical space surrounded by the magnetic shield body 2. Therefore, since the magnetic flux lines 5 penetrating the coil 3 are limited to the outside of the magnetic shield body 2, the inductance of the coil 3 is very small. In this state, magnetism is shielded in the central portion of the cylindrical magnetic shield body 2.
【０００７】ところが、コイル３に過剰電流が流れる
と、磁気シールド体２のマイスナー効果は失われ、図２
（ｂ）に示すように、磁束線５が磁気シールド体２の中
心部を軸方向に貫くように侵入し、磁束がコイル３に鎖
交するので、コイル３のインダクタンスが急激に増加
し、コイル３を流れる電流を限流する。However, when an excessive current flows through the coil 3, the Meissner effect of the magnetic shield body 2 is lost, and FIG.
As shown in (b), the magnetic flux lines 5 penetrate the central portion of the magnetic shield body 2 so as to penetrate in the axial direction, and the magnetic flux interlinks with the coil 3, so that the inductance of the coil 3 rapidly increases and the coil 3 Limit the current flowing through 3.
【０００８】[0008]
【発明が解決しようとする課題】ところで、上記したよ
うな、超電導円筒体とその円筒体の回りに巻かれたコイ
ルとを有する限流素子が液体窒素（７７Ｋ）中に浸漬さ
れて構成される超電導限流器においては、コイルに過剰
電流が流れて、超電導円筒体のマイスナー効果が失われ
（クエンチ現象）た場合に発熱が生じ、液体窒素が大量
に気化することにより、超電導限流器とそれを冷却する
液体窒素を収容する容器の内圧が急激に上昇するという
事態が発生する。このような容器内圧の急激な上昇は、
それにより容器の破壊等を引き起こす危険性があり、そ
の対策が望まれる。By the way, the current limiting element having the superconducting cylinder and the coil wound around the cylinder is constructed by being immersed in liquid nitrogen (77K). In a superconducting fault current limiter, when an excess current flows in a coil and the Meissner effect of the superconducting cylinder is lost (quenching phenomenon), heat is generated and liquid nitrogen is vaporized in a large amount. A situation occurs in which the internal pressure of the container containing the liquid nitrogen that cools it rapidly rises. Such a rapid increase in the internal pressure of the container
As a result, there is a risk that the container may be destroyed, and countermeasures are required.
【０００９】又、液体窒素の気化時に発生する気泡が超
電導円筒体に付着するため、超電導円筒体の冷却効率が
低下するという問題もあった。従って本発明は、上記従
来の問題を解決した、超電導円筒体がクエンチして発熱
があっても容器内圧の急激な上昇がなく、冷却効率が低
下しない超電導限流器を提供することを目的とする。Further, since the bubbles generated during vaporization of liquid nitrogen adhere to the superconducting cylinder, there is a problem that the cooling efficiency of the superconducting cylinder decreases. Therefore, an object of the present invention is to provide a superconducting fault current limiter that solves the above-mentioned conventional problems, does not cause a rapid increase in the internal pressure of the container even if the superconducting cylinder is quenched and generates heat, and the cooling efficiency does not decrease. To do.
【００１０】[0010]
【課題を解決するための手段】即ち、本発明によれば、
超電導円筒体と、該超電導円筒体の回りに巻かれたコイ
ルとを冷却容器内に収容してなる超電導限流器におい
て、該超電導円筒体をパイプ状のコイルにて巻回すると
ともに、該パイプ状コイルの内部に冷却ヘリウムガスを
循環させ、該冷却容器内には冷却ヘリウムガスを充填し
たことを特徴とする超電導限流器、が提供される。That is, according to the present invention,
In a superconducting fault current limiter in which a superconducting cylinder and a coil wound around the superconducting cylinder are housed in a cooling container, the superconducting cylinder is wound by a pipe-shaped coil, and the pipe is Provided is a superconducting fault current limiter characterized in that a cooling helium gas is circulated inside a coil and the cooling container is filled with the cooling helium gas.
【００１１】[0011]
【作用】本発明の超電導限流器では、冷却容器内に冷却
ヘリウムガスを充填するとともに、超電導円筒体をパイ
プ状コイルで巻回し、そのパイプ状コイルの内部に冷却
ヘリウムガスを循環させる。このような構成を有するた
め、コイルに過電流が流れ、超電導円筒体がクエンチし
て発熱があっても、冷却容器の内圧は急激に上昇せず、
冷却効率が低下しない。In the superconducting fault current limiter of the present invention, the cooling helium gas is filled in the cooling container, the superconducting cylinder is wound around the pipe coil, and the cooling helium gas is circulated inside the pipe coil. With such a configuration, even if overcurrent flows through the coil and the superconducting cylinder is quenched and generates heat, the internal pressure of the cooling container does not rise rapidly,
Cooling efficiency does not decrease.
【００１２】また、このようにパイプ状コイルを用い、
その内側に冷却ヘリウムガスを循環させているので、冷
却容器に設ける外部との接続口がパイプ状コイルのみで
あり、一方、単にコイルで巻回し冷却容器に冷却ヘリウ
ムガスを充填する場合には、冷却容器の接続口はコイル
のほかにヘリウムガスの循環口が必要となり、その部分
でのシール性確保、断熱性保持のための装備が大がかり
となる。Further, by using the pipe-shaped coil as described above,
Since the cooling helium gas is circulated inside it, the connection port to the outside provided in the cooling container is only a pipe-shaped coil, on the other hand, in the case of simply winding the coil and filling the cooling container with the cooling helium gas, In addition to the coil, the helium gas circulation port is required for the connection port of the cooling container, and the equipment for securing the sealing property and maintaining the heat insulating property at that part is large.
【００１３】[0013]
【実施例】以下、本発明を図示例に基づき更に詳しく説
明するが、本発明はこれらの実施例に限られるものでは
ない。図１は本発明に係る超電導限流器の一例を示す構
成概要図で、１０は超電導円筒体で、超電導円筒体１０
の外周は銅パイプコイル１１が巻回されている。超電導
円筒体１０と銅パイプコイル１１から構成される限流素
子Ａは、ヘリウムガスを充填した冷却容器１２内に配置
される。冷却容器１２は、内壁１３、外壁１４、および
内壁１３と外壁１４の間に形成される真空断熱層１５と
から構成されている。EXAMPLES The present invention will now be described in more detail with reference to the illustrated examples, but the present invention is not limited to these examples. FIG. 1 is a schematic configuration diagram showing an example of a superconducting fault current limiter according to the present invention, and 10 is a superconducting cylinder, and a superconducting cylinder 10
A copper pipe coil 11 is wound around the outer periphery of the. The current limiting element A composed of the superconducting cylinder 10 and the copper pipe coil 11 is arranged in a cooling container 12 filled with helium gas. The cooling container 12 includes an inner wall 13, an outer wall 14, and a vacuum heat insulating layer 15 formed between the inner wall 13 and the outer wall 14.
【００１４】銅パイプコイル１１は、冷却容器１２の外
部に設置される循環式ヘリウムガス冷凍機１６に銅パイ
プ１７、ジョイント１９及び接続パイプ２０を介して連
結されており、銅パイプコイル１１の内部は約５０Ｋに
冷却されたヘリウムガスが循環されるようになってい
る。銅パイプ１７には銅線１８が接続し、図示しない電
源より銅パイプコイル１１に電流が流れるようになって
いる。尚、２１は圧力計であり、冷却容器１２内の圧力
を検知している。また２２はヘリウムガスの置換口であ
る。The copper pipe coil 11 is connected to a circulating helium gas refrigerator 16 installed outside the cooling container 12 via a copper pipe 17, a joint 19 and a connecting pipe 20, and the inside of the copper pipe coil 11 is connected. The helium gas cooled to about 50K is circulated. A copper wire 18 is connected to the copper pipe 17, so that a current flows from the power supply (not shown) to the copper pipe coil 11. A pressure gauge 21 detects the pressure inside the cooling container 12. Reference numeral 22 is a helium gas replacement port.
【００１５】以下、具体的な実施結果を説明する。 （実施例）組成比がBi:Sr:Ca:Cu ＝２：２：１：２とな
るように、Bi2O3 、SrCO3 、CaCO3 、CuO 各粉末を調合
し、蒸留水を用いてポットミルにより５時間湿式混合し
た。乾燥後、電気炉中大気雰囲気下８２０℃で１２時間
仮焼した。得られた仮焼粉末に、５重量％の銀粉末を外
配にて添加し、エタノールを溶媒としてポットミルによ
り１０時間粉砕し、その後乾燥機にて乾燥して原料粉末
とした。The concrete results of the implementation will be described below. (Example) Bi 2 O 3 , SrCO 3 , CaCO 3 , and CuO powders were mixed so that the composition ratio was Bi: Sr: Ca: Cu = 2: 2: 1: 2, and distilled water was used. Wet mixing was carried out for 5 hours using a pot mill. After drying, it was calcined in an electric furnace at 820 ° C. for 12 hours in the atmosphere. 5% by weight of silver powder was externally added to the obtained calcined powder, and the mixture was ground with a pot mill for 10 hours using ethanol as a solvent, and then dried with a drier to obtain a raw material powder.
【００１６】この原料粉末を外径１００ｍｍ、内径７０
ｍｍ、高さ１２０ｍｍの円筒状成形体にプレス成形し
た。得られた円筒状成形体を焼成炉内において緻密アル
ミナセッター上に載置し、酸素雰囲気下、８７０℃で１
時間保持して部分溶融した。次いで、８４０℃まで１℃
／時間で冷却し、更に８４０℃で１０時間保持後、炉内
雰囲気を窒素雰囲気に置換し、炉冷した。This raw material powder was prepared with an outer diameter of 100 mm and an inner diameter of 70
mm and a height of 120 mm were pressed into a cylindrical molded body. The obtained cylindrical molded body was placed on a dense alumina setter in a firing furnace, and was placed in an oxygen atmosphere at 870 ° C. for 1 hour.
Hold for a while to partially melt. Then 1 ℃ up to 840 ℃
After cooling for 10 hours at 840 ° C., the atmosphere in the furnace was replaced with a nitrogen atmosphere, and the furnace was cooled.
【００１７】以上のようにして得られた円筒状超電導体
を外径９０ｍｍ、内径８０ｍｍ、高さ８０ｍｍに加工し
た。次に、図１に示すように、円筒状超電導体１０の回
りに、外径３ｍｍ、内径２ｍｍの銅パイプを１００回巻
回して銅パイプコイル１１とした。尚、銅パイプの外表
面にはエナメルをコートし、絶縁した。The cylindrical superconductor obtained as described above was processed into an outer diameter of 90 mm, an inner diameter of 80 mm and a height of 80 mm. Next, as shown in FIG. 1, a copper pipe having an outer diameter of 3 mm and an inner diameter of 2 mm was wound 100 times around the cylindrical superconductor 10 to form a copper pipe coil 11. The outer surface of the copper pipe was coated with enamel for insulation.
【００１８】このように円筒状超電導体１０と銅パイプ
コイル１１から構成される限流素子Ａを、真空断熱され
た冷却容器１２内に配置した。尚、冷却容器１２内はガ
ス置換口２２を介してヘリウムガスで置換した。また、
銅パイプコイル１１に、銅パイプ１７、テフロン製ジョ
イント１９を介して循環式ヘリウムガス冷凍機１６を接
続し、５０Ｋに冷却されたヘリウムガスを重量換算で
０．３ｇ／分循環させた。また、銅パイプ１７には半田
付けにより銅線１８を取付け、銅パイプコイル１１に表
１に示す電流を３０秒間通電した。結果（限流素子の状
態と冷却容器内の圧力）を表１に示す。The current limiting element A thus composed of the cylindrical superconductor 10 and the copper pipe coil 11 was placed in the vacuum-insulated cooling container 12. The inside of the cooling container 12 was replaced with helium gas through the gas replacement port 22. Also,
A circulation type helium gas refrigerator 16 was connected to the copper pipe coil 11 via a copper pipe 17 and a Teflon joint 19 and helium gas cooled to 50K was circulated in a weight conversion of 0.3 g / min. A copper wire 18 was attached to the copper pipe 17 by soldering, and the current shown in Table 1 was applied to the copper pipe coil 11 for 30 seconds. Table 1 shows the results (state of the current limiting element and pressure in the cooling container).
【００１９】（比較例）実施例と同一の円筒状超電導体
を用い、この回りに外表面をエナメルコートした直径３
ｍｍの銅線を１００回巻回して、限流素子とした。この
限流素子を、冷却容器内に充填した液体窒素（７７Ｋ）
中に浸漬し、表１に示す電流を３０秒間通電した。結果
を表１に示す。(Comparative Example) The same cylindrical superconductor as that used in the Example was used, and the outer surface was enamel-coated around the same diameter 3
A copper wire of mm was wound 100 times to form a current limiting element. Liquid nitrogen (77K) filled in the cooling container with this current limiting element
It was dipped in and the current shown in Table 1 was passed for 30 seconds. The results are shown in Table 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１から明らかなように、液体窒素中に限
流素子を浸漬する場合は、過電流が流れ超電導体がクエ
ンチすると、容器内圧が急激に上昇するが、本発明の場
合には急激な圧力上昇は生じないことがわかる。As is clear from Table 1, when the current limiting element is immersed in liquid nitrogen, the internal pressure of the container rises rapidly when an overcurrent flows and the superconductor is quenched. It can be seen that no significant pressure rise occurs.
【００２２】[0022]
【発明の効果】以上説明したように、本発明の超電導限
流器によれば、コイルに過電流が流れ、超電導円筒体が
クエンチして発熱があっても、冷却容器の内圧は急激に
上昇せず、しかも冷却効率が低下しない。また、冷却容
器に設ける外部との接続口がパイプ状コイルのみで済
み、シール性及び断熱性保持のための機構が少なくて済
むという効果を奏する。As described above, according to the superconducting fault current limiter of the present invention, even if an overcurrent flows through the coil and the superconducting cylinder is quenched and generates heat, the internal pressure of the cooling container rises rapidly. And the cooling efficiency does not decrease. Moreover, the connection port to the outside provided in the cooling container is only the pipe-shaped coil, and there is an effect that the mechanism for maintaining the sealing property and the heat insulating property is small.
【図１】本発明に係る超電導限流器の一例を示す構成概
要図である。FIG. 1 is a schematic configuration diagram showing an example of a superconducting fault current limiter according to the present invention.
【図２】超電導限流器の作用を説明する断面図で、(a)
は定常時で、(b) は異常時である。FIG. 2 is a cross-sectional view illustrating the operation of the superconducting fault current limiter, (a)
Is the steady state and (b) is the abnormal state.
１０ 超電導円筒体、１１ 銅パイプコイル、１２ 冷
却容器、１３ 内壁、１４ 外壁、１５ 真空断熱層、
１６ 循環式ヘリウムガス冷凍機、１７ 銅パイプ、１
８ 銅線、１９ ジョイント、２０ 接続パイプ。10 superconducting cylinder, 11 copper pipe coil, 12 cooling container, 13 inner wall, 14 outer wall, 15 vacuum heat insulating layer,
16 circulation helium gas refrigerator, 17 copper pipe, 1
8 copper wires, 19 joints, 20 connecting pipes.
Claims (1)
に巻かれたコイルとを冷却容器内に収容してなる超電導
限流器において、 該超電導円筒体をパイプ状のコイルにて巻回するととも
に、該パイプ状コイルの内部に冷却ヘリウムガスを循環
させ、 該冷却容器内には冷却ヘリウムガスを充填したことを特
徴とする超電導限流器。1. A superconducting fault current limiter in which a superconducting cylinder and a coil wound around the superconducting cylinder are housed in a cooling container. The superconducting cylinder is wound by a pipe coil. The superconducting fault current limiter is characterized in that a cooling helium gas is circulated inside the pipe-shaped coil, and the cooling helium gas is filled in the cooling container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5072453A JPH06283768A (en) | 1993-03-30 | 1993-03-30 | Superconducting current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5072453A JPH06283768A (en) | 1993-03-30 | 1993-03-30 | Superconducting current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06283768A true JPH06283768A (en) | 1994-10-07 |
Family
ID=13489741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5072453A Withdrawn JPH06283768A (en) | 1993-03-30 | 1993-03-30 | Superconducting current limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06283768A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1217708A1 (en) * | 2000-12-21 | 2002-06-26 | Abb Research Ltd. | Superconducting device |
| KR20040068685A (en) * | 2003-01-27 | 2004-08-02 | 주식회사 디엠에스 | Apparatus for processing substrate for liquid crystal display device |
| JP2009246231A (en) * | 2008-03-31 | 2009-10-22 | Toshiba Corp | Cryogenic cooling control apparatus and method of controlling the same |
| CN112635151A (en) * | 2020-11-28 | 2021-04-09 | 安徽信息工程学院 | Temperature-measuring and automatic-cooling impedance type superconducting current limiter |
-
1993
- 1993-03-30 JP JP5072453A patent/JPH06283768A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1217708A1 (en) * | 2000-12-21 | 2002-06-26 | Abb Research Ltd. | Superconducting device |
| KR20040068685A (en) * | 2003-01-27 | 2004-08-02 | 주식회사 디엠에스 | Apparatus for processing substrate for liquid crystal display device |
| JP2009246231A (en) * | 2008-03-31 | 2009-10-22 | Toshiba Corp | Cryogenic cooling control apparatus and method of controlling the same |
| CN112635151A (en) * | 2020-11-28 | 2021-04-09 | 安徽信息工程学院 | Temperature-measuring and automatic-cooling impedance type superconducting current limiter |
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