JPH02126519A - Superconducting conductor - Google Patents
Superconducting conductorInfo
- Publication number
- JPH02126519A JPH02126519A JP63279310A JP27931088A JPH02126519A JP H02126519 A JPH02126519 A JP H02126519A JP 63279310 A JP63279310 A JP 63279310A JP 27931088 A JP27931088 A JP 27931088A JP H02126519 A JPH02126519 A JP H02126519A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- tape
- wires
- superconducting
- alloy
- 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
- 239000004020 conductor Substances 0.000 title abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 239000002887 superconductor Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 3
- 239000010955 niobium Substances 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910001362 Ta alloys Inorganic materials 0.000 claims description 2
- 229910001080 W alloy Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910000599 Cr alloy Inorganic materials 0.000 claims 1
- 229910001257 Nb alloy Inorganic materials 0.000 claims 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims 1
- 239000000788 chromium alloy Substances 0.000 claims 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 claims 1
- 229910000657 niobium-tin Inorganic materials 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 239000011295 pitch Substances 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 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
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は高磁界、大電流容量をもつ強制冷却用の超電導
４体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a superconducting four body for forced cooling having a high magnetic field and a large current capacity.
（従来の技術）
定格電流値が数千へ以上の大容量超電導４体では、機械
的な強度、極低温下における安定性、および変動磁界に
よる交流損失の低減などが要求される。第５図に示す様
に、Ｎｂ、Ｓｎ線の超電導素線１を多数本撚り合わせて
、ケーブル状にし、そのケーブルをステンレスなどの管
３に収納し、冷媒をケーブルと管の間に供給する型のい
わゆるケーブル・イン・コンジット導体が提案されてい
る。(Prior Art) Four large-capacity superconductors with a rated current value of several thousand or more are required to have mechanical strength, stability at extremely low temperatures, and reduction of AC loss due to fluctuating magnetic fields. As shown in Fig. 5, a large number of superconducting strands 1 of Nb and Sn wires are twisted together to form a cable, the cable is housed in a tube 3 made of stainless steel, etc., and a refrigerant is supplied between the cable and the tube. Types of so-called cable-in-conduit conductors have been proposed.
この様に構成すると、超電導４体はステンレスを有する
ために、機械的な強度が高くなる。また、極低温下にお
ける安定性は、冷媒が素線の間に入り込むためモノリス
導体あるいはホロー導体より接触する面積が広くなり、
安定性が良くなる。ＮｂＴｉ線でつくられた超電導索線
の表面をホルマールなどの有機絶縁物で被覆すると、変
動磁界を受けた場合にも、索線間には結合電流が流れな
いため、モノリス導体あるいはホロー導体より交流損失
を低減することができる。With this configuration, since the four superconducting bodies are made of stainless steel, their mechanical strength is increased. In addition, regarding stability at extremely low temperatures, since the refrigerant enters between the wires, the contact area is wider than that of a monolith conductor or hollow conductor.
Improves stability. If the surface of a superconducting cable made of NbTi wire is coated with an organic insulator such as formal, no coupled current will flow between the cables even when subjected to a fluctuating magnetic field. Loss can be reduced.
（発明が解決しようとする課題）
この様なケーブル・イン・コンジット導体は超電導素線
を３本単位、７本単位など適切な本数の束にして撚り合
わせてケーブルを構成するために、１本の素線は他の素
線と相当な長さにわたって接触することになる。また、
ケーブルはステンレスなどの管内に収納された後、適切
なコンパクションが管に加えられて、管内の導体領域が
他の空間領域（冷媒が入る予定の領域）に対して所定の
割合（通常３０％〜８０％の範囲にある）になるため、
一般的に超電導素線はその圧縮を受けて僅かに変形し、
素線間の接触面積が増える。素線間の接触面積が大きく
なると、変動磁界が加わったときに、素線間に結合電流
が誘起され、いわゆる交流損失が増大する。特に、Ｎｂ
３Ｓｎなどの金属間化合物超電導４体を生成する時に、
約７００℃の長時間の熱処理工程を必要とし、その時に
接触部がより強くコンタクトして、接触抵抗が減少し、
結合電流による交流損失が大きくなる。(Problem to be solved by the invention) Such a cable-in-conduit conductor is made by twisting an appropriate number of superconducting wires into bundles such as 3 or 7 wires and twisting them together to form a cable. The strands of strands come into contact with other strands over a considerable length. Also,
After the cable is housed in a pipe made of stainless steel or similar material, an appropriate compaction is applied to the pipe to reduce the conductor area within the pipe to a predetermined ratio (usually 30% to (in the range of 80%),
Generally, superconducting strands deform slightly due to compression,
The contact area between wires increases. When the contact area between the strands increases, a coupling current is induced between the strands when a varying magnetic field is applied, increasing so-called AC loss. In particular, Nb
When producing 4 intermetallic compound superconductors such as 3Sn,
It requires a long heat treatment process at approximately 700°C, and at that time, the contact area makes stronger contact and the contact resistance decreases.
AC loss due to coupled current increases.
本発明は以上の問題点に鑑み、Ｎｂ、 Ｓｎ超電導線で
構成されるケーブル・イン・コンジット導体の交流損失
の低減を計った大電流容量の超電導４体を提案しようと
するものである。In view of the above-mentioned problems, the present invention proposes four superconductors with a large current capacity that reduce AC loss in cable-in-conduit conductors composed of Nb and Sn superconducting wires.
（課題を解決するための手段）
本発明のものは、超電導素線の外周に金属のテープまた
は細線をとばし巻きし、この巻きつけられた素線を多数
本束ねて撚り合わせてケーブルを構成し、このケーブル
をステンレスなどの管内に収納してその後、Ｎｂ３Ｓｎ
などの生成の熱処理工程を経て製作した超電導４体とす
る。(Means for Solving the Problems) The cable of the present invention is constructed by winding a metal tape or thin wire around the outer periphery of a superconducting wire, and bundling and twisting a large number of the wound wires. , this cable is stored in a tube made of stainless steel, etc., and then Nb3Sn
The four superconducting bodies were manufactured through a heat treatment process.
（作 用）
この様に構成すると、超電痺素線間においては、巻きつ
けられた細線により接触面積が少ないため、変動磁界で
誘起される電流が少なくなり、交流損失が減少する。ま
た、細線の抵抗が高い場合には、変動磁界によって誘起
される電流がより一層少なくなる。(Function) With this configuration, the contact area between the superelectrostatic wires is small due to the thin wires wound around them, so the current induced by the fluctuating magnetic field is reduced, and AC loss is reduced. Also, if the resistance of the thin wire is high, the current induced by the varying magnetic field will be even smaller.
（実施例）
以下５本発明の一実施例を第１図、第２図および第３図
を参照して説明する。Ｎｂ、Ｓｎを構成する材料ででき
た超電導素線１の外周に適切なピッチＱＰで細線２又は
テープ２１を巻きつける。細線又はテープが巻きつけら
れた超電導素線は適切な本数束ねて撚り合わせる。本数
が多い場合には複数回。(Embodiment) Hereinafter, five embodiments of the present invention will be described with reference to FIGS. 1, 2, and 3. A thin wire 2 or tape 21 is wound around the outer periphery of a superconducting wire 1 made of a material comprising Nb and Sn at an appropriate pitch QP. An appropriate number of superconducting wires wrapped with thin wire or tape are bundled and twisted together. Multiple times if there are many.
撚り合わせてケーブルを構成する。ケーブルはステンレ
スなどの管３に収納し、その後成型して、所定の寸法に
なった後、Ｎｂ３Ｓｎなどの生成熱処理を経てケーブル
・イン・コンジット型の超電導４体とする。Ｎｂ３Ｓｎ
線は、銅、高純度アルミニウム、または、それらの組合
せたものを安定化母材として用いた構成になっている。Twist them together to form a cable. The cable is housed in a tube 3 made of stainless steel or the like, then molded to a predetermined size, and then subjected to heat treatment to form Nb3Sn or the like to form four cable-in-conduit type superconducting bodies. Nb3Sn
The wires are constructed using copper, high purity aluminum, or a combination thereof as the stabilizing matrix.
細線又はテープはステンレス、ニッケル、タングステン
、ニオブ、タンタル、クロム、ニッケル合金、タングス
テン合金、タンタル合金、クロ１１合金、銅合金、アル
ミ合金などを用いる。The thin wire or tape is made of stainless steel, nickel, tungsten, niobium, tantalum, chromium, nickel alloy, tungsten alloy, tantalum alloy, chromium 11 alloy, copper alloy, aluminum alloy, or the like.
このように超電導素線の外周に細線又はテープを適切な
ピッチで巻きつけることにより素線間は細線又はテープ
を介して電気的に結合する。そのため素線間は抵抗が高
くなるので、変動磁界による交流損失も低減する。In this manner, by wrapping the thin wires or tape around the outer periphery of the superconducting wires at an appropriate pitch, the wires are electrically coupled via the thin wires or tape. Therefore, the resistance between the strands becomes high, and AC loss due to the fluctuating magnetic field is also reduced.
（他の実施例）
第４図に示すように、超電導素線１の外周に巻きつける
細線２のツイストピッチ長ＱＰを超電導素線のツイスト
ピッチ長ＬＰよりも短かくする。細線はテープでも同じ
である。(Other Examples) As shown in FIG. 4, the twist pitch length QP of the thin wire 2 wound around the outer periphery of the superconducting wire 1 is made shorter than the twist pitch length LP of the superconducting wire. The same goes for thin lines with tape.
この様に構成すると、超電導索線は隣の超電導素線と長
い距離にわたって、直接に接触することがなくなり、変
動磁界によって超電４素線間に誘起される結合電流は細
線又はテープを必ず横切ることになる。細線又はテープ
の抵抗が高いため、変動磁界による交流損失も低減でき
る。With this configuration, superconducting cables do not come into direct contact with neighboring superconducting strands over long distances, and the coupling current induced between the four superconducting strands by the fluctuating magnetic field always crosses the thin wire or tape. It turns out. Since the resistance of the thin wire or tape is high, AC losses due to fluctuating magnetic fields can also be reduced.
以上述べたように本発明においては超電導素線に金属の
細線又はテープを巻きつけるので、交流損失を低減でき
る。細線又はテープの電気抵抗が高いほど交流損失を低
減できる。As described above, in the present invention, since a thin metal wire or tape is wrapped around a superconducting wire, AC loss can be reduced. The higher the electrical resistance of the thin wire or tape, the more AC loss can be reduced.
第１図は本発明の実施例の超電導４体の断面図、第２図
と第３図は上記実施例において用いる超電導素線の斜視
図、第４図は他の実施例の斜視図、第５図は従来の導体
の断面図を示す。
１・・超電導素線、 ２・・・細線、２１・・・
テープ、 ３・・・管。
ＵＰ・・・細線又はテープのピッチ長、ＬＰ・・・超電
導素線の撚りピッチ長。
代理人 弁理士 則 近 憲 佑
同 第子丸 健
第
図
第
図
第
図FIG. 1 is a sectional view of four superconducting bodies according to an embodiment of the present invention, FIGS. 2 and 3 are perspective views of superconducting strands used in the above embodiment, and FIG. 4 is a perspective view of another embodiment. FIG. 5 shows a cross-sectional view of a conventional conductor. 1...Superconducting wire, 2...Thin wire, 21...
Tape, 3...tube. UP: Pitch length of thin wire or tape; LP: Twisting pitch length of superconducting strands. Agent Patent Attorney Nori Ken Yudo Daishimaru Ken
Claims (1)
圧送して冷却する強制冷却超電導コイル用の超電導々体
において、Ｎｂ＿３ＳｎあるいはＮｂ＿３Ｇｅ，Ｎｂ＿
３Ａｌなどの金属間化合物系超電導材料の構成物質と銅
やアルミニウムなどの安定化材などで構成される超電導
素線の外周に、ステンレス、ニッケル、タングステン、
ニオブ、タンタル、クロム、ニッケル合金、タングステ
ン合金、ニオブ合金、タンタル合金、クロム合金、銅合
金、アルミニウム合金、または、それらの表面が酸化あ
るいはクロム酸、またはクロムメッキなどで表面処理さ
れた１ｍｍ以下の直径を有する細線または１ｍｍ以下の
厚さをもつテープをすきまをあけて巻きつけ、この巻き
つけられた超電導素線の適切な本数を束にしてケーブル
を構成し、このケーブルをステンレスなどの管内に収納
した後、金属間化合物超電導体を生成するための熱処理
を施して製造した超電導々体。Nb_3Sn, Nb_3Ge, Nb_
Stainless steel, nickel, tungsten,
Niobium, tantalum, chromium, nickel alloy, tungsten alloy, niobium alloy, tantalum alloy, chromium alloy, copper alloy, aluminum alloy, or surfaces of 1mm or less that have been surface-treated with oxidation, chromic acid, or chromium plating, etc. A thin wire with a diameter or a tape with a thickness of 1 mm or less is wound with a gap, an appropriate number of the wound superconducting wires are bundled together to form a cable, and this cable is placed inside a tube made of stainless steel or other material. A superconductor manufactured by being stored and then subjected to heat treatment to produce an intermetallic compound superconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63279310A JPH02126519A (en) | 1988-11-07 | 1988-11-07 | Superconducting conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63279310A JPH02126519A (en) | 1988-11-07 | 1988-11-07 | Superconducting conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02126519A true JPH02126519A (en) | 1990-05-15 |
Family
ID=17609383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63279310A Pending JPH02126519A (en) | 1988-11-07 | 1988-11-07 | Superconducting conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02126519A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006165342A (en) * | 2004-12-08 | 2006-06-22 | Tohoku Univ | Method for manufacturing superconductive coil |
| JP2016502728A (en) * | 2012-08-29 | 2016-01-28 | スナム カンパニー リミテッド | Superconducting wire manufacturing method and superconducting wire manufactured thereby |
| CN108447614A (en) * | 2018-01-11 | 2018-08-24 | 华北电力大学 | A kind of quasi-isotropic high engineering current density high-temperature superconductor conductor |
-
1988
- 1988-11-07 JP JP63279310A patent/JPH02126519A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006165342A (en) * | 2004-12-08 | 2006-06-22 | Tohoku Univ | Method for manufacturing superconductive coil |
| JP2016502728A (en) * | 2012-08-29 | 2016-01-28 | スナム カンパニー リミテッド | Superconducting wire manufacturing method and superconducting wire manufactured thereby |
| CN108447614A (en) * | 2018-01-11 | 2018-08-24 | 华北电力大学 | A kind of quasi-isotropic high engineering current density high-temperature superconductor conductor |
| CN108447614B (en) * | 2018-01-11 | 2020-07-24 | 中天集团上海超导技术有限公司 | Quasi-isotropic high-engineering current density high-temperature superconducting conductor |
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