JPH01264112A - Superconductive conductor - Google Patents
Superconductive conductorInfo
- Publication number
- JPH01264112A JPH01264112A JP63089302A JP8930288A JPH01264112A JP H01264112 A JPH01264112 A JP H01264112A JP 63089302 A JP63089302 A JP 63089302A JP 8930288 A JP8930288 A JP 8930288A JP H01264112 A JPH01264112 A JP H01264112A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- conduit
- conductor
- refrigerant
- cable
- 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 claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000001965 increasing effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010292 electrical insulation Methods 0.000 description 7
- 239000001307 helium Substances 0.000 description 7
- 229910052734 helium Inorganic materials 0.000 description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003466 welding 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、超電導導体に関し、もう少し詳しくいうと
、超電導素線を束ねた超電導クープルの周囲に薄帯を巻
付け、さらにコンジットで覆い、コンジット内に極低温
冷媒を強制循環させるようにした超ｌＩｉＣｍｉ体に関
するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a superconducting conductor, and more specifically, a thin ribbon is wrapped around a superconducting couple made by bundling superconducting strands, and the conduit is further covered with a conduit. This invention relates to an ultra-IIiCmi body in which a cryogenic refrigerant is forcedly circulated.
第３図および第４図は例えば本出願人のＸの出ｍｌ願昭
６２−２５６１８０号）に記載された従来の強制冷却超
１Ｍ、Ｊ４導体を示し、図において、超電導素線（１１
を多数本撚線して形成した超！導クープル（２）の超電
導素線（１）相互間の間隙は冷媒通路（３）を形成して
いる。超電導ケーブル（２）の外周は金楓薄帯（４）を
介してコンジット（５）で囲み、断面角形の超電導導体
（６）が形成されている。FIGS. 3 and 4 show a conventional forced cooling super 1M, J4 conductor, which is described in, for example, the present applicant's ML Application No. 62-256180).
Super made by stranding a large number of wires! A gap between the superconducting wires (1) of the conducting couple (2) forms a coolant passage (3). The outer periphery of the superconducting cable (2) is surrounded by a conduit (5) via a gold maple ribbon (4) to form a superconducting conductor (6) with a rectangular cross section.
超電導素線（１）は例えばＮｂ３Ｓｎより作られており
、撚線された超電導ケーブル（２）を形成している。超
電導ケーブル（２）は電磁力支持構造物および気密保持
のための機能を有するコンジッ） （５） Ｋ ５１わ
れている。金稿薄帯（４）は、コンジット（５）を平板
から製作して溶接時に超電導素線（１）に熱損傷を与え
ないため、および、超電導導体（６）を断面四角形に整
形するときに超電導素線（１）に機械的損傷を与えない
ように設けられたものである。The superconducting wires (1) are made of Nb3Sn, for example, and form a twisted superconducting cable (2). The superconducting cable (2) is equipped with a conduit (5) K51 that has an electromagnetic force support structure and a function for maintaining airtightness. The gold strip (4) is used to make the conduit (5) from a flat plate so that the superconducting wire (1) is not damaged by heat during welding, and when shaping the superconducting conductor (6) into a rectangular cross section. This is provided so as not to cause mechanical damage to the superconducting wire (1).
以上の構成により、超電連索１ｌＪＰ（１）の間隙でな
る冷媒通路（３）には冷媒として超臨界圧ヘリウム（例
えは４５ Ｋ 、 １０ ａｉｍ ）が圧送される。With the above configuration, supercritical pressure helium (for example, 45 K, 10 aim) is pumped as a refrigerant into the refrigerant passage (3) formed by the gap between the superelectric cables 11JP (1).
超電導導体（６）は、超電連索ｄａ （ｔ）の径を細く
できるので従来のいわゆるモノリスと呼はれる超電導導
体と比べて、冷媒との接触面積が格段に多くなるので、
熱的に非常に安定したものとなる。また、この超電導導
体（６）を巻回して製作した超電導コイルは、その電磁
力をコンジット（５）で支持することが可能であり、機
械的に強固である。さらに、コンジット（５）の周囲を
絶縁物で強固に覆うこともできるので、耐電圧特性の比
較的優れた超電導コイルを得ることができる。In the superconducting conductor (6), the diameter of the superconducting cable da (t) can be made thinner, so the contact area with the refrigerant is much larger than that of conventional superconducting conductors called monoliths.
It is very thermally stable. Moreover, the superconducting coil manufactured by winding this superconducting conductor (6) can support its electromagnetic force with the conduit (5), and is mechanically strong. Furthermore, since the periphery of the conduit (5) can be tightly covered with an insulating material, a superconducting coil with relatively excellent withstand voltage characteristics can be obtained.
〔発明が解決しようとする課題〕
従来の超電導導体は以上のように構成されているので、
超電導素線径を小さくすれば冷却面積が上昇するが、そ
の反面、等価水力直径が小さくなり導体出入口間の冷媒
圧力損失が大きくなるので、冷凍機動力を増加させる必
要があるという問題点があった。例えば、超電導素線径
が０．９Ｆｍ、コンジット内の全超電導素線の占める割
合を６０％とすると、等価水力直径は０．０６５ ｍと
なり、超電導導体長さ２００ｒｎ、超臨界圧ヘリウム流
量ｓ ｔｔ ／ｓで圧力損失は２ａｔｍとなり、かかる
超電導導体の数千水より形成される核融合炉用超電導コ
イルでは、超臨界圧ヘリウム循環のための冷凍機動力は
数ＭＷにも達する。[Problem to be solved by the invention] Since the conventional superconducting conductor is configured as described above,
Decreasing the diameter of the superconducting strands increases the cooling area, but on the other hand, the equivalent hydraulic diameter decreases and the refrigerant pressure loss between the conductor inlet and outlet increases, so there is a problem in that it is necessary to increase the chiller power. Ta. For example, if the superconducting strand diameter is 0.9 Fm and the proportion of all superconducting strands in the conduit is 60%, the equivalent hydraulic diameter is 0.065 m, the superconducting conductor length is 200 rn, and the supercritical helium flow rate is s tt. /s, the pressure loss is 2 atm, and in a superconducting coil for a fusion reactor formed from several thousand waters of such a superconducting conductor, the refrigerator power for circulating supercritical pressure helium reaches several MW.
また、コイル内の導体間電気絶縁はコンジットはとみに
高まり、導体間のべ気絶員物のみでは要になされたもの
で、冷凍機動力を増加させることな（、熱的に安定な超
１ｓ導体、および高度の絶縁能力を有する超電導導体を
得ることを目的とする。In addition, the electrical insulation between the conductors in the coil has increased rapidly in the case of conduits, and it has become essential to only use a stunner between the conductors, without increasing the power of the refrigerator (thermally stable super 1s conductor, etc.). and to obtain a superconducting conductor with a high degree of insulation ability.
この発明に係る超電導導体は、金属などの薄帯が薄帯間
に間隔をもって巻付けられ、間隔は冷媒用サブチャネル
を形成している。In the superconducting conductor according to the present invention, thin ribbons of metal or the like are wound with intervals between the ribbons, and the intervals form coolant subchannels.
この発明の別の発明に係る超電導導体は、超電導ケーブ
ルに絶縁テープが巻付けられている。In a superconducting conductor according to another aspect of the present invention, an insulating tape is wrapped around a superconducting cable.
この発明においては、冷却用冷媒は主としてサブチャネ
ルを流れるので冷却効果を損うことなく、導体出入口間
の圧力損失が著しく減少する。In this invention, since the cooling refrigerant mainly flows through the subchannels, the pressure loss between the inlet and outlet of the conductor is significantly reduced without impairing the cooling effect.
この発明の別の発明においては、電気絶縁が、超電導ケ
ーブルとコンジットとの間で行われているので、高い電
気絶縁能力を呈する。In another aspect of the present invention, electrical insulation is provided between the superconducting cable and the conduit, thus exhibiting high electrical insulation ability.
第１図はこの発明の一実施例を示し、図において、符号
（１）〜（６）は第４図と同じものである。超電導ケー
ブル（２）とコンジット（５）の間の金属薄帯（４）の
間の間隔がサブチャネル（７）を形成している。薄帯（
４）の巻き方はいわゆるすかしスパイラル巻きである。FIG. 1 shows an embodiment of the present invention, and in the figure, reference numerals (1) to (6) are the same as those in FIG. 4. The spacing between the metal ribbons (4) between the superconducting cable (2) and the conduit (5) forms subchannels (7). Thin obi (
The winding method 4) is a so-called watermark spiral winding.
次に動作について説明する。流体の圧力損失は等価水力
直径の４．７５乗に逆比例するので、例えば、等価水力
直径が２ｆｌ程度の間隙でなるサブチャネル（７）を設
けると、超電導クープル（２）内の等価水力直径は、０
．０６５ｍｍであるので、超臨界圧ヘリウムは主として
サブチャネル（７）内を流れて、導体出入口間の圧力損
失は著しく減少する。Next, the operation will be explained. Since the pressure loss of fluid is inversely proportional to the equivalent hydraulic diameter to the 4.75th power, for example, if a subchannel (7) with a gap of about 2 fl is provided, the equivalent hydraulic diameter in the superconducting couple (2) is 0
．． 065 mm, the supercritical helium flows mainly within the subchannel (7) and the pressure loss between the conductor inlet and outlet is significantly reduced.
このとき、超電導ケーブル（２）内の流量は減少し、超
電導素線（１）の安定性は低下するように考えられるが
、このような細い超電導素線（１）を撚線した超電導ケ
ーブル（２）においては、その安定性は、超電導素線（
１）の周囲にある冷媒の址のみに依存し、冷媒の流量に
ほとんど依存しないことが、ジエ・ダブリュ・ルーエ（
Ｊ 、Ｗ、Ｌｕｅ ）らの論文ジャーナル オブ アプ
ライド フィジックス（Ｊ、Ａｐｐｌ 、Ｐｈｙｓ、）
５１ （１９８０）ｐ、７７２により、実験的にも、理
論的にも確認されている。At this time, the flow rate in the superconducting cable (2) decreases, and the stability of the superconducting wire (1) seems to decrease. In 2), the stability of the superconducting wire (
1) depends only on the location of the refrigerant around it, and almost does not depend on the flow rate of the refrigerant.
Journal of Applied Physics (J, Appl, Phys, ) et al.
51 (1980) p. 772, both experimentally and theoretically.
なお、上記実施例では、超電導素線としてＮｂ ３ Ｓ
ｎを、冷媒として超臨界圧ヘリウムを使用した場合に
ついて述べたが、冷媒は液体ヘリウムであってもよいし
、超電導素線はＮｂＴｉでもよい。In addition, in the above embodiment, Nb 3 S is used as the superconducting wire.
Although the case where supercritical pressure helium is used as a refrigerant has been described for n, the refrigerant may be liquid helium, and the superconducting strands may be NbTi.
さらに、超電導導体の臨界温度が液体窒素の沸点（７，
７３Ｋ）以上の場合は、冷媒として液体窒素、超臨界圧
窒素、液体窒素と熱交換した高圧のヘリウムガスなどで
あってもよい。この場合の超電導体としては、例えばＹ
−Ｂａ −Ｃｕ −０系酸化物がある。この物質は、
臨界温度が８０に以上であることが実験的に確認されて
いる。Furthermore, the critical temperature of the superconducting conductor is the boiling point of liquid nitrogen (7,
73K) or higher, the refrigerant may be liquid nitrogen, supercritical pressure nitrogen, high pressure helium gas heat exchanged with liquid nitrogen, or the like. In this case, the superconductor is, for example, Y
There is -Ba-Cu-0 type oxide. This substance is
It has been experimentally confirmed that the critical temperature is above 80°C.
また、上記実施例では薄情として金属博労としたが、薄
帯は電気絶縁物でもよい。Further, in the above embodiment, the thin ribbon was made of metal as a courtesy, but the ribbon may be made of an electrically insulating material.
第２図は他の実施例を示し、図において（１）〜（３）
。FIG. 2 shows another embodiment, in which (1) to (3)
.
（５） （６）は第３図と同じものである。超電導ケー
ブル（２）の外周に電気絶縁テープ（８）が巻かれ超電
導ケーブル（２）とコンジット（５）の間の電気絶縁を
確保している。(5) and (6) are the same as in Figure 3. Electrical insulation tape (8) is wrapped around the outer circumference of the superconducting cable (2) to ensure electrical insulation between the superconducting cable (2) and the conduit (5).
次に動作について説明する。超電導コイルが運転される
絶対温度４に付近での冷媒Ｈ’ｅの電気絶縁能力は著し
く高く、１＋ｗ当り１０〜２０ ｋＶの耐電圧能力を有
する。しかも固体絶縁と異なり、くり返し電圧が印加さ
れても絶縁劣化することがない。この実施例は、以上の
すぐれたＨｅの絶縁能力を利用するもので、電気絶縁テ
ープ（８）は基本的には超電導クープル（２）とコンジ
ット（５）の間のスペーサの役をなし、間ＫＨｅを確保
するものである。Next, the operation will be explained. The electrical insulation ability of the refrigerant H'e near the absolute temperature 4 at which the superconducting coil is operated is extremely high, and has a withstand voltage ability of 10 to 20 kV per 1+W. Moreover, unlike solid insulation, the insulation does not deteriorate even if voltage is repeatedly applied. This embodiment utilizes the above-mentioned excellent insulating ability of He, and the electrical insulating tape (8) basically serves as a spacer between the superconducting couple (2) and the conduit (5). This is to ensure KHe.
さらに、コンジット（５）には超電導コイルのａｍが変
動したときに誘導性電圧が作用するので、コンジット（
５）を電圧検出のためのピックアップコイルとして使用
することもできるという副次効果がある。Furthermore, since an inductive voltage acts on the conduit (5) when the am of the superconducting coil changes, the conduit (5)
5) can also be used as a pickup coil for voltage detection.
この発明は、以上の説明から明らかなように、超電導ケ
ーブルと、金属博労とコンジット間にサブチャネルを形
成して冷媒を通したので、冷却効果を損うことなく、導
体出入口間の圧力損失が著しく減少することから、冷凍
機動力の増加を要せずして熱的安定を達成することがで
きる効果がある。As is clear from the above description, in this invention, a subchannel is formed between the superconducting cable, the metal conduit, and the conduit to pass the coolant, thereby reducing the pressure loss between the conductor entrance and exit without impairing the cooling effect. Since this decreases significantly, there is an effect that thermal stability can be achieved without requiring an increase in the power of the refrigerator.
また、この発明の別の発明は、超電導ケーブルを電気絶
縁テープでくるみ、コンジットと絶縁したので、電気絶
縁性能を著しく向上することができる・In addition, another invention of this invention is that the superconducting cable is wrapped with electrical insulating tape and insulated from the conduit, so that the electrical insulation performance can be significantly improved.
第１図はこの発明の一実施例の一部切欠き斜視図、第２
図は他の実施例の倒断面図、第３図、第４図は従来の超
電導導体のそれぞれ横断面図および一部切欠き斜視図で
ある。
（１）・・超電導素線、（２）・・超電導ケーブル、（
３）・・冷媒通路、（４）・・金属薄帯、（５）・−コ
ンジツ） 、 （６）・・超電導導体、（７）・・サブ
チャネル、（８）φ・電気絶縁テープ。
なお、各図中、向−符号は同−又は相当部分を示す。FIG. 1 is a partially cutaway perspective view of one embodiment of the present invention, and FIG.
The figure is a collapsed sectional view of another embodiment, and FIGS. 3 and 4 are a cross-sectional view and a partially cutaway perspective view, respectively, of a conventional superconducting conductor. (1)...Superconducting wire, (2)...Superconducting cable, (
3)...Refrigerant passage, (4)...Metal thin strip, (5)...-Conduit), (6)...Superconducting conductor, (7)...Subchannel, (8)φ・Electric insulation tape. Note that in each figure, the same or corresponding parts are indicated by the same reference numerals.
Claims (2)
ブルと、この超電導ケーブルの周囲に巻付けた薄帯と、
この薄帯の周囲を覆つたコンジツトからなり、前記コン
ジツト内に極低温冷媒を強制循環させて冷却する超電導
導体において、前記薄帯は薄帯間に間隔をもつて巻かれ
ていることを特徴とする超電導導体。(1) A superconducting cable with a rectangular cross section made by bundling a large number of superconducting wires, a thin ribbon wrapped around this superconducting cable,
A superconducting conductor comprising a conduit surrounding the thin ribbon and cooled by forced circulation of a cryogenic refrigerant within the conduit, characterized in that the thin ribbon is wound with intervals between the ribbons. superconducting conductor.
ブルと、この超電導ケーブルの周囲に巻付けた薄帯と、
この薄帯を覆つたコンジツトからなり、前記コンジツト
内に極低温冷媒を強制循環させて冷却する超電導導体に
おいて、電気絶縁テープでなる前記薄帯を備えてなるこ
とを特徴とする超電導導体。(2) A superconducting cable with a rectangular cross section made by bundling a large number of superconducting wires, and a thin ribbon wrapped around this superconducting cable,
A superconducting conductor comprising a conduit covering the thin strip and cooled by forced circulation of a cryogenic refrigerant within the conduit, characterized in that the thin strip is made of electrically insulating tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63089302A JPH01264112A (en) | 1988-04-13 | 1988-04-13 | Superconductive conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63089302A JPH01264112A (en) | 1988-04-13 | 1988-04-13 | Superconductive conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01264112A true JPH01264112A (en) | 1989-10-20 |
Family
ID=13966874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63089302A Pending JPH01264112A (en) | 1988-04-13 | 1988-04-13 | Superconductive conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01264112A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132108A (en) * | 1990-09-21 | 1992-05-06 | Sumitomo Electric Ind Ltd | Nb3al superconductor |
| KR100683132B1 (en) * | 2005-09-29 | 2007-02-15 | 한국기초과학지원연구원 | Winding device for cable-in-conduit-conductor and its winding method |
-
1988
- 1988-04-13 JP JP63089302A patent/JPH01264112A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132108A (en) * | 1990-09-21 | 1992-05-06 | Sumitomo Electric Ind Ltd | Nb3al superconductor |
| KR100683132B1 (en) * | 2005-09-29 | 2007-02-15 | 한국기초과학지원연구원 | Winding device for cable-in-conduit-conductor and its winding method |
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