JPS63254610A - superconducting cable - Google Patents
superconducting cableInfo
- Publication number
- JPS63254610A JPS63254610A JP62089567A JP8956787A JPS63254610A JP S63254610 A JPS63254610 A JP S63254610A JP 62089567 A JP62089567 A JP 62089567A JP 8956787 A JP8956787 A JP 8956787A JP S63254610 A JPS63254610 A JP S63254610A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- wire
- cable
- insulating layer
- wires
- 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.)
- Pending
Links
- 229910003460 diamond Inorganic materials 0.000 claims description 9
- 239000010432 diamond Substances 0.000 claims description 9
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 7
- 229910052594 sapphire Inorganic materials 0.000 claims description 7
- 239000010980 sapphire Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910000943 NiAl Inorganic materials 0.000 claims 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims 2
- 229910052750 molybdenum Inorganic materials 0.000 claims 2
- 229910052719 titanium Inorganic materials 0.000 claims 2
- 229910052726 zirconium Inorganic materials 0.000 claims 2
- 229910052770 Uranium Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 14
- 239000004020 conductor Substances 0.000 description 11
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 239000002023 wood Substances 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この光明は超電導発電□、核融合等の大型マグネットに
用いるケーブル型超電導導体に関するものである。[Detailed Description of the Invention] <Industrial Application Field> This light relates to a cable-type superconducting conductor used in large magnets such as superconducting power generation and nuclear fusion.
〈従来の技術〉
トカマク核融合のポロイダルコイルや超電導発電機の界
磁コイル、電は子コイルのように、磁界の変化速度の大
きいマグネットに用いる超電導導体では、磁界変動に誘
起される電力１Ω失を低減させるため、超電導索線に分
割し、素線を撚合わせたケーブル型の導体とすることが
行なわれている。<Conventional technology> In superconducting conductors used in magnets where the magnetic field changes rapidly, such as poloidal coils in tokamak fusion, field coils in superconducting generators, and electric wire coils, it is difficult to reduce the power loss of 1Ω induced by magnetic field fluctuations. In order to reduce this, a cable-type conductor is created by dividing the superconducting cables into cables and twisting the strands together.
例えばＣＬＬマトリックスＮｂＴｉ合金多芯線のような
素線に分ｖ１すると、超電導体フィラメン１−のフィラ
メント径を低減できること、および素線のツイストピッ
チを低減することができるため、フィラメントの磁化履
歴に起因するヒステリシス損失およびマトリックスをよ
ぎってフィラメントに還流する遮蔽電流に起因する結合
損失を低減することが可能である。For example, by dividing v1 into a wire such as a CLL matrix NbTi alloy multifilament wire, the filament diameter of the superconductor filament 1- can be reduced, and the twist pitch of the wire can be reduced. It is possible to reduce coupling losses due to hysteresis losses and screening currents flowing back through the matrix into the filament.
特に超電導発電はの電機子コイルのように、交流を通電
するコイルでは磁界変ｖＪ速度が著しく大きいため、ケ
ータプル型導体とすることが不可欠である。In particular, in a coil that conducts alternating current, such as an armature coil in superconducting power generation, the magnetic field variation vJ speed is extremely large, so it is essential to use a cable-pull type conductor.
しかし、ケーブル型導体では、木線間の接触部をよぎっ
て素線に還流する遮蔽電流による新たな結合４０失が発
生するのが問題である。However, a problem with cable-type conductors is that additional loss of coupling 40 occurs due to shielding current that crosses the contact between the wooden wires and flows back into the strands.
このような素線間の結合損失が問題になる場合には、表
面を絶縁した素線を用いてケーブル導体を作製していた
。また素線の絶縁にはホルマール等の右も１物が用いら
れていた。When such coupling loss between wires becomes a problem, cable conductors are fabricated using wires whose surfaces are insulated. In addition, a material such as formal was used to insulate the wires.
＜ｙテ明が解決しようとする問題点〉
上記したようなホルマール等の有ぼ物を用いた素線の絶
縁では極低温における熱電導度が著しく小さいため、ヒ
ステリシス損失やフィラメント間の結合損に起因して素
線内部で発生する熱を冷媒である液体ヘリウム中に速や
かに放出することができず、素線が温度上昇し、超電導
状態が熱的に不安定になることが問題であった。<Problems that ytemei is trying to solve> As mentioned above, insulating wires using a material such as formal has extremely low thermal conductivity at extremely low temperatures, resulting in hysteresis loss and coupling loss between filaments. The problem was that the heat generated inside the wire could not be quickly released into the coolant liquid helium, causing the temperature of the wire to rise and the superconducting state to become thermally unstable. .
また、有も１物の絶縁はｄ械的な強度が小さいのでケー
ブルの剛性が低下するという欠点があった。In addition, the mechanical strength of single-layer insulation is low, resulting in a reduction in the rigidity of the cable.
〈問題点を解決するための手段〉
この発明は上記した従来の問題点を解消した超電導ケー
ブルを得るべく検討の結果得られたものである。<Means for Solving the Problems> The present invention was obtained as a result of studies aimed at obtaining a superconducting cable that solved the above-mentioned conventional problems.
即ち、この発明は表面に非晶質カーボン、ダイヤモンド
、サファイヤまたはこれらの混合体からなる膜の絶縁層
を設けたＣｕまたはＡｌ線と、同じ絶縁層を表面に設け
た超電導線を撚合わせたことを特徴とする超電導ケーブ
ルを提供するものである。That is, the present invention consists of twisting a Cu or Al wire with an insulating layer of amorphous carbon, diamond, sapphire, or a mixture thereof on its surface, and a superconducting wire with the same insulating layer on its surface. The present invention provides a superconducting cable characterized by:
詳しくのべると、この発明は第１図に示すように、素線
間の電気的絶縁と熱的な高熱伝導性とを両立させるため
、素線を非晶質カーボン、ダイヤモンド、サファイヤま
たはこれらの混合体からなる膜の絶縁層によって絶縁し
たのち、ケーブルを構成したものである。Specifically, as shown in FIG. 1, this invention uses amorphous carbon, diamond, sapphire, or a mixture of these to achieve both electrical insulation and high thermal conductivity between the strands. The cable is constructed after being insulated by an insulating layer of a membrane made of the body.
また超電導の安定性を良好にするために、同じように絶
縁したＣＬＬまたはＡ／ａを撚り込んだものである。In order to improve the stability of superconductivity, similarly insulated CLL or A/a are twisted.
第１図の例では非晶質カーボン、ダイヤモンド、サフア
イヤまたはこれらの混合体からなる膜の絶縁層２を有す
る０、２ｍｍφの超電導ＦＡ１を４本と同じ絶縁層２を
有する０、２ｍｍφのＱ線（またはＭ線）３の３本とを
撚合わせた一次撚線を示しており、この−次撚線を１５
本撚合わせてケーブル導体とした。In the example shown in Fig. 1, there are four superconducting FA1s of 0.2 mmφ each having an insulating layer 2 made of amorphous carbon, diamond, sapphire, or a mixture thereof, and 4 Q lines of 0.2 mmφ having the same insulating layer 2. (or M wire) indicates a primary stranded wire in which 3 wires are twisted together, and this -order stranded wire is 15
This was twisted together to form a cable conductor.
〈作用〉
超電導導体をコイル巻きして製造する超電導マグネット
は導体の側面に冷却チャンネルを設けて液体ヘリウムを
供給し、冷却する。従ってケーブル型導体では素線内部
で発生した熱は、絶縁層を介して素線間を伝導し、ケー
ブルの表面からヘリウム中に熱伝達する。絶縁層が有機
物の場合には、絶縁層において熱伝導が妨げられ温度上
昇する。<Function> Superconducting magnets manufactured by winding a superconducting conductor into coils are cooled by providing cooling channels on the sides of the conductor and supplying liquid helium. Therefore, in a cable type conductor, the heat generated inside the wires is conducted between the wires via the insulating layer, and is transferred from the surface of the cable into the helium. When the insulating layer is made of organic material, heat conduction in the insulating layer is hindered and the temperature increases.
１寺に交流を通電する交流コイルでは交流損失によって
定常的に光熱するので、温度上界も著し訃。An AC coil that supplies AC current to one temple constantly generates light heat due to AC loss, so the upper limit of temperature is also significant.
この発明のように、絶縁層を非晶質カーボン、ダイヤモ
ンド、サファイヤまたはこれらの混合体とすることによ
って、熱伝導が良好になり、温度上昇を抑えることがで
きる。また熱伝導の良好なＣ１または〃線を撚込むこと
によって、仮またはＮ線にまで達した熱はへまたはＮｌ
線の長さ方向に熱伝導することにより熱はけが良好にな
る。By using amorphous carbon, diamond, sapphire, or a mixture thereof for the insulating layer as in the present invention, heat conduction is improved and temperature rise can be suppressed. In addition, by twisting the C1 or 〃 wires, which have good thermal conductivity, the heat that reaches the temporary or
Heat conduction in the length direction of the wire improves heat dissipation.
非晶質カーボン、ダイヤモンド、サファイヤ等はホルマ
ール等の有機物絶縁月料に比べて強度が著しくすぐれる
ので、ケーブルの剛性も良好となるのである。Amorphous carbon, diamond, sapphire, etc. have significantly higher strength than organic insulating materials such as formal, so the rigidity of the cable is also good.
非晶質カーボン、ダイヤモンド、サファイヤ等と超電導
線材との間の熱膨張率の差から、室温とヘリウム温度と
の間の熱サイクルによって絶縁層と超電導線との間が剥
離することがあるが、ＮＬ、Ｚｒ 、冷、Ｗ、ＴＬまた
はＮ、Ｎなどの中間層を入れることによって密着性の向
上および熱膨張率の差を緩和することにより〈中間層の
熱膨比率は絶縁層と超電導層の中間の値を持つものを選
ぶ）、剥離を防止することができる。Due to the difference in thermal expansion coefficient between amorphous carbon, diamond, sapphire, etc. and the superconducting wire, the insulating layer and the superconducting wire may peel off due to thermal cycles between room temperature and helium temperature. By inserting an intermediate layer such as NL, Zr, cold, W, TL or N, N, the adhesion is improved and the difference in thermal expansion coefficient is alleviated. (Choose one with an intermediate value) to prevent peeling.
なお、この発明の超電導ケーブルは核融合ポロイダルコ
イル、光電ｎの界磁コイルや電機子コイル等の超電導の
パルスコイルあるいは交流コイル用のケーブル型導体と
して使用すると効果がある。The superconducting cable of the present invention is effective when used as a cable type conductor for superconducting pulse coils or alternating current coils such as nuclear fusion poloidal coils, photoelectric n field coils, and armature coils.
〈実施例〉
Ａ、従来例
第２図に示すように、断面の中心部をＣＩＬ −ＮＬ金
合金区分されたＣＩＬｌｌとし、その外周部のＣｗ −
ＮＬ合金マトリックス１２として０．３μｍφのｈ
ＴＬ金合金ィラメント約２万本を埋め込んだ外径ｏ、
ｉ、の超電′４４Ｉ材１を作製し、通常の焼付は法によ
って厚さ１０μ乳のホルマールを被覆した。この超電導
線を７本撚りしたものを１次撚線とし、該１次撚線をさ
らに７本撚りしてケーブルを作製した。<Example> A, Conventional Example As shown in FIG.
h of 0.3 μmφ as the NL alloy matrix 12
Approximately 20,000 TL gold alloy filaments are embedded in the outer diameter o,
A superelectric '44I material 1 of I was prepared and coated with formal having a thickness of 10 μm using the usual baking method. Seven superconducting wires were twisted to form a primary strand, and seven primary strands were further twisted to produce a cable.
このケーブルを胴径５０ｍｍのボビンに１０層コイル巻
きしてマグネットを作製した。次いでこのマグネットを
液体ヘリウムに浸漬して直流電流および６０Ｈｚの交流
電流を通電したところ、前者の場合はｏ、ａ７’、後者
は０．４丁でクエンチした。This cable was coiled in 10 layers around a bobbin with a body diameter of 50 mm to produce a magnet. Next, this magnet was immersed in liquid helium and a direct current and an alternating current of 60 Hz were applied, and the former was quenched at o, a7', and the latter was quenched at 0.4.
Ｂ３本発明例
従来例で用いたと同じ超電導線およびＭｌａを科学的気
相成長（以下中にＣＶＤと称す）反応器内に１分間あた
り５０ｍｍの速度で連続的に供給し、反応器内に１分間
に１愛のＨ２ガスと１分間に０．５愛のＣＨ４ガスを送
り込み、通電加熱により超電導線およびＭ’ａを３００
℃に加熱しなからＣＶＤ反応器内１３．５６ Ｍ ＨＺ
のラジオ波を印加し、プラズマを発生させることにより
ダイヤモンドの薄膜を全長にわたり３μｍの厚さに形成
させた。B3 Example of the present invention The same superconducting wire and Mla used in the conventional example were continuously fed into a chemical vapor deposition (hereinafter referred to as CVD) reactor at a rate of 50 mm per minute. By feeding H2 gas at 1 am/min and CH4 gas at 0.5 am/min, the superconducting wire and M'a are heated to 300 pm by electrical heating.
13.56 MHZ in the CVD reactor without heating to ℃
A thin diamond film with a thickness of 3 μm was formed over the entire length by applying radio waves and generating plasma.
次いでこのダイヤモンド′ａ膜を形成させた超電導線４
木とＮ線３本を撚合わせて１次撚線とし、この１次撚線
をさらに７本撚りしてケーブルを作製した。このケーブ
ルを胴径５０闇のボビンに１０層コイル巻きしてマグネ
ットを作製した。Next, the superconducting wire 4 on which this diamond'a film was formed
The wood and three N wires were twisted together to form a primary strand, and seven additional strands of this primary strand were twisted to produce a cable. A magnet was produced by winding this cable into a 10-layer coil around a bobbin with a body diameter of 50 mm.
次にこのマグネットを液体ヘリウムに浸漬して直流通電
および６０１−＋Ｚの交流電流を通電した結果、何れの
場合も０．９７ Ｔの磁界を発生させることができた。Next, this magnet was immersed in liquid helium and a direct current and an alternating current of 601-+Z were applied, and as a result, a magnetic field of 0.97 T was able to be generated in both cases.
〈発明の効果〉
以上述べたように、この発明はケーブルを構成する超電
導線の本数が少ないにも拘らず（従来例の４７７倍）、
従来例より高い磁界の発生が可能であり、特に交流通電
した場合にその効果が著しいことが認められた。<Effects of the Invention> As mentioned above, although the number of superconducting wires composing the cable of this invention is small (477 times that of the conventional example),
It was found that it is possible to generate a magnetic field higher than that of the conventional example, and the effect is particularly remarkable when AC current is applied.
第１図はこの発明の超電導ケーブルを構成する１次撚線
の断面図、第２図は１次撚線を構成する素線のうちの超
７ｒｉｌ線の断面図である。
１・・・超電導ａ ２・・・絶縁層３ ・・
・ Ｃ１ま ノこ は ＃！！出願人代理人 弁理士
和 １）昭第２図
第１図
１ ン１ ｉｆ！こ線FIG. 1 is a sectional view of a primary stranded wire constituting a superconducting cable of the present invention, and FIG. 2 is a sectional view of a super 7ril wire among the strands constituting the primary stranded wire. 1...Superconducting a 2...Insulating layer 3...
・C1 Manoko is #! ! Applicant's agent Patent attorney Kazu 1) Showa 2 Figure 1 Figure 1 N1 if! This line
Claims (4)
ヤまたはこれらの混合体からなる膜の絶縁層を設けたＣ
ｕまたはＡｌ線と同じ絶縁層を表面に設けた超電導線と
を撚合わせたことを特徴とする超電導ケーブル。(1) C whose surface is provided with an insulating layer made of amorphous carbon, diamond, sapphire, or a mixture thereof.
A superconducting cable characterized by twisting U or Al wires and superconducting wires having the same insulating layer on their surfaces.
、Ｚｒ、Ｍｏ、Ｗ、ＴｉまたはＮｉＡｌの中間層を設け
た特許請求の範囲第１項記載の超電導ケーブル。(2) Ni between the surface of the Cu wire or Al wire and the insulating layer
The superconducting cable according to claim 1, further comprising an intermediate layer of , Zr, Mo, W, Ti or NiAl.
またはＮｂ＿３Ａｌである特許請求の範囲第１項記載の
超電導ケーブル。(3) Superconducting wire is NoTi, No_3Sn, V_3Ga
or Nb_3Al, the superconducting cable according to claim 1.
Ｍｏ、Ｗ、ＴｉまたはＮｉＡｌの中間層を設けた特許請
求の範囲第１項記載の超電導ケーブル。(4) Between the surface of the superconducting wire and the insulating layer, Ni, Zr,
The superconducting cable according to claim 1, further comprising an intermediate layer of Mo, W, Ti or NiAl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62089567A JPS63254610A (en) | 1987-04-10 | 1987-04-10 | superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62089567A JPS63254610A (en) | 1987-04-10 | 1987-04-10 | superconducting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63254610A true JPS63254610A (en) | 1988-10-21 |
Family
ID=13974390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62089567A Pending JPS63254610A (en) | 1987-04-10 | 1987-04-10 | superconducting cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63254610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02253517A (en) * | 1989-03-27 | 1990-10-12 | Agency Of Ind Science & Technol | Superconducting wire |
-
1987
- 1987-04-10 JP JP62089567A patent/JPS63254610A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02253517A (en) * | 1989-03-27 | 1990-10-12 | Agency Of Ind Science & Technol | Superconducting wire |
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