JP2002015629A - Superconductive cable - Google Patents
Superconductive cableInfo
- Publication number
- JP2002015629A JP2002015629A JP2000199648A JP2000199648A JP2002015629A JP 2002015629 A JP2002015629 A JP 2002015629A JP 2000199648 A JP2000199648 A JP 2000199648A JP 2000199648 A JP2000199648 A JP 2000199648A JP 2002015629 A JP2002015629 A JP 2002015629A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- cable
- tape
- former
- superconducting 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.)
- Granted
Links
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
【０００１ 】[0001]
【発明の属する技術分野】本発明は、許容曲げ半径が向
上されて、導体化後の曲げによる歪みに際して超電導特
性が劣化しにくくされた酸化物超電導ケーブルに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxide superconducting cable in which the allowable bending radius is improved, and the superconducting characteristics are hardly deteriorated due to distortion caused by bending after conversion to a conductor.
【０００２ 】[0002]
【従来の技術】従来の超電導ケーブルとしては、積層型
のものと転位撚り型のもの等が挙げられる。積層型の超
電導ケーブルとしては、図３の（ａ）および（ｂ）に示
すようなステンレス鋼などからなるパイプ状のフォーマ
２の周囲にテープ状の超電導導体３がスパイラル状に巻
回されてなる超電導導体層４が複数積層され、これらの
超電導導体層４、４…間に絶縁テープ材５が介在されて
なる超電導ケーブルが知られている。各超電導導体層４
の超電導導体３の巻回方向は、交互反対方向となってお
り、図３に示した例においては、フォーマ２側から第１
層目の超電導導体層４の巻回方向がＳ巻（右巻）、第２
層目の超電導導体層４の巻回方向がＺ巻（左巻）、第３
層目の超電導導体層４の巻回方向がＳ巻（右巻）、第４
層目の超電導導体層４の巻回方向がＺ巻（左巻）と交互
になっている。2. Description of the Related Art Conventional superconducting cables include a laminated type and a dislocation twist type. As a laminated superconducting cable, a tape-shaped superconducting conductor 3 is spirally wound around a pipe-shaped former 2 made of stainless steel or the like as shown in FIGS. 3 (a) and 3 (b). A superconducting cable in which a plurality of superconducting conductor layers 4 are laminated and an insulating tape material 5 is interposed between the superconducting conductor layers 4, 4,... Is known. Each superconducting conductor layer 4
The winding directions of the superconducting conductors 3 are alternately opposite to each other, and in the example shown in FIG.
The winding direction of the superconducting conductor layer 4 is S winding (right winding),
The winding direction of the superconducting conductor layer 4 of the layer is Z winding (left winding),
The winding direction of the superconducting conductor layer 4 of the layer is S winding (right winding),
The winding direction of the superconducting conductor layer 4 of the layer is alternated with Z winding (left winding).
【０００３ 】上記テープ状の超電導導体３は、図４に
示す構造の超電導多心素線（超電導素線）１３を矩形状
に塑性加工してテープ状に平坦化されてなるものであ
る。この超電導多心素線１３は、超電導フィラメントな
どの超電導体からなるコア部１６または熱処理により超
電導体となる材料を有するコア部１６がシース材からな
る金属シース１７の内部に複数備えられてなるものであ
る。なお、図４中、矢印の方向は、超電導多心素線１３
を捻る際の捻り方向の一例を示すものである。The tape-shaped superconducting conductor 3 is obtained by plastically processing a superconducting multi-core element wire (superconducting element wire) 13 having a structure shown in FIG. 4 into a rectangular shape and flattening it into a tape shape. The superconducting multifilamentary wire 13 comprises a plurality of core portions 16 made of a superconductor such as a superconducting filament or a plurality of core portions 16 having a material that becomes a superconductor by heat treatment, inside a metal sheath 17 made of a sheath material. It is. In FIG. 4, the direction of the arrow is the superconducting multi-core wire 13.
1 shows an example of a twisting direction when twisting the.
【０００４ 】上記超電導コアに利用される超電導物質
としては、Ｂｉ2Ｓｒ2Ｃａ1Ｃｕ2Ｏx（Ｂｉ系２２１２
相），Ｂｉ2Ｓｒ2Ｃａ2Ｃｕ3Ｏy（Ｂｉ系２２２３
相）、Ｂｉ1.6Ｐｂ0.4Ｓｒ2Ｃａ2Ｃｕ3Ｏx 、ｌ2Ｂａ2Ｃ
ａ2Ｃｕ3Ｏy 、Ｙ1Ｂ2Ｃｕ7-X（Ｙ系１２３相）等の組
成を持つ酸化物超電導導体が利用されている。そのうち
Ｂｉ系、特にＢｉ系２２２３相の酸化物超電導物質が、
高い臨界温度を有し安定な物質として超電導コアに広く
適用されている。The superconducting material used for the superconducting core is Bi 2 Sr 2 Ca 1 Cu 2 O x (Bi-2212).
Phase), Bi 2 Sr 2 Ca 2 Cu 3 O y (Bi-based 2223)
Phase), Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O x , l 2 Ba 2 C
a 2 Cu 3 O y, oxide superconductor having a composition such as Y 1 B 2 Cu 7-X (Y system 123 phase) is utilized. Among them, Bi-based, especially Bi-based 2223-phase oxide superconducting material,
It is widely applied to superconducting cores as a stable material with a high critical temperature.
【０００５ 】上記積層型の超電導ケーブル３において
は、各超電導導体層４、４…において各超電導導体層
４、４…のインダクタンスの違いにより、電流が各層に
均等に分配されないの偏流現象がおこるため、その抑制
策として各層毎にスパイラルピッチを変える検討や、各
層間に上述のような絶縁層５、５を設ける等の検討がな
されている。しかしながら、このような偏流現象を軽減
させるための検討は、超電導ケーブルの機械的強度を低
下させることとなり様々な問題があった。このことは、
超電導導体への機械的な最適なスパイラルピッチと、偏
流現象を抑えるための最適なスパイラルピッチが必ずと
も一致しない場合があることを示唆している。[0005] In the superconducting cable 3 of the laminated type, the current is not uniformly distributed to the respective superconducting conductor layers 4, 4,... Due to the difference in inductance of the superconducting conductor layers 4, 4,. As a countermeasure, studies have been made to change the spiral pitch for each layer, and to provide the above-described insulating layers 5 and 5 between the layers. However, studies for reducing such a drift phenomenon have reduced the mechanical strength of the superconducting cable, and have had various problems. This means
This suggests that the optimal spiral pitch for the superconducting conductor and the optimal spiral pitch for suppressing the drift phenomenon may not always match.
【０００６ 】上記転位撚り型の超電導ケーブルは、上
記のような積層型の超電導ケーブル３における機械的特
性と、偏流現象を抑制の両方を達成するための超電導ケ
ーブルの構造として提案されているものである。このよ
うな転位撚り型の超電導ケーブルの一例を図５および図
６に示す。この転移撚り型の超電導ケーブル２１は、転
位超電導テープユニット２４がパイプ状のフォーマ２２
の周囲に螺旋状に巻回されてなるものである。The dislocation twist type superconducting cable has been proposed as a structure of a superconducting cable for achieving both the mechanical characteristics and the drift phenomenon of the laminated superconducting cable 3 as described above. is there. One example of such a dislocation twist type superconducting cable is shown in FIGS. The dislocation superconducting tape unit 24 is formed of a pipe-shaped former 22
Is spirally wound around the body.
【０００７ 】前記転位超電導テープユニット２４は、
図６の（ａ）および（ｂ）に示すように、テープ状の複
合超電導導体（複合超電導テープ）２９を複数本（図面
では５本）転位撚り合わせしてなる長尺の帯状のもので
あり、テープ状の超電導導体２３に、同じ幅の金属テー
プ２８を添設してなる複合超電導導体２９の複数本を集
合して撚り合わせる際に、各テープ状の複合超電導導体
２９をその長尺方向において図６に示すように順次その
位置を代えて変位するように撚り合わされたものであ
る。即ち複合超電導導体２９は、その長さ方向において
転位超電導テープユニット２４の表面側に位置する場合
と底面側に位置する場合が交互に繰り返されるように配
置されている。このような転位超電導テープユニット２
４の巻回方向は、Ｓ巻（右巻）の方向またはＺ巻（左
巻）の方向となっている。また、上記テープ状の超電導
導体２３は、上記テープ状の超電導導体３と同様の構造
のものである。The dislocation superconducting tape unit 24 comprises:
As shown in (a) and (b) of FIG. 6, a tape-shaped composite superconducting conductor (composite superconducting tape) 29 is a long strip formed by transposing and twisting a plurality of (five in the drawing) dislocation twists. When a plurality of composite superconducting conductors 29 each having a metal tape 28 of the same width attached to a tape-shaped superconducting conductor 23 are assembled and twisted, each tape-shaped composite superconducting conductor 29 is moved in its longitudinal direction. In FIG. 6, they are twisted so as to be displaced sequentially at different positions as shown in FIG. That is, the composite superconducting conductor 29 is arranged so that the case where it is located on the surface side of the dislocation superconducting tape unit 24 and the case where it is located on the bottom side are alternately repeated in the longitudinal direction. Such a dislocation superconducting tape unit 2
The winding direction of No. 4 is the direction of S winding (right winding) or the direction of Z winding (left winding). The tape-shaped superconducting conductor 23 has the same structure as the tape-shaped superconducting conductor 3.
【０００８ 】このようなテープ状の超電導導体３、２
３を用いた超電導ケーブル１、２１においては、これま
で、機械強度を高く、かつ交流損失の少ない超電導ケー
ブルを得るために、超電導導体のスパイラルピッチの検
討や、転位撚りピッチの検討等が行われている。[0008] Such tape-shaped superconducting conductors 3, 2
In the superconducting cables 1 and 21 using No.3, in order to obtain a superconducting cable having high mechanical strength and low AC loss, a study of a spiral pitch of the superconducting conductor, a study of a dislocation twist pitch, and the like have been performed. ing.
【０００９ 】[0009]
【発明が解決しようとする課題】ところで、上記超電導
ケーブルにおける機械的特性の検討は、超電導導体のケ
ーブル化プロセスや、超電導ケーブルが直線状に配置さ
れた場合に、超電導導体にかかる歪みに関する検討であ
った。しかしながら実際には、このような超電導ケーブ
ルには、ケーブル化後の運送時や敷設時等の作業時に曲
げによる歪みが生じる場合がある。このような場合、従
来構造の超電導ケーブルにおいては、フォーマーと超電
導導体との間に大きな滑りが生じないことから、ケーブ
ル内の超電導導体にも歪みが生じる。例えば、曲げによ
る歪みの中心線を超電導ケーブルの中心軸と仮定して計
算した結果、上記超電導ケーブル１における内部の超電
導導体にかかる歪みは、超電導ケーブル全体に作用する
歪みの約７０％に相当するものであった。The mechanical characteristics of the superconducting cable are examined by examining the process of forming the superconducting conductor into a cable and the strain applied to the superconducting conductor when the superconducting cable is arranged in a straight line. there were. However, in actuality, such a superconducting cable may be distorted due to bending during work such as transportation or laying after the cable is formed. In such a case, in the superconducting cable having the conventional structure, since a large slip does not occur between the former and the superconducting conductor, the superconducting conductor in the cable is also distorted. For example, as a result of calculation assuming that the center line of the strain due to bending is the center axis of the superconducting cable, the strain applied to the internal superconducting conductor in the superconducting cable 1 corresponds to about 70% of the strain acting on the entire superconducting cable. Was something.
【００１０ 】上記超電導ケーブルには、超電導特性が
著しく低下してしまう曲げ半径の値、すなわち超電導特
性を維持するための限界曲げ半径（以下、最小曲げ半径
とする）が存在する。上述のような超電導ケーブルにお
いては、超電導ケーブルにおける歪みが、その内部の超
電導導体に大きな割合で伝わるために、この最小曲げ半
径に大きな制約があった。このように超電導ケーブルに
大きな最小曲げ半径の制約があると、常温で行われる超
電導ケーブルの運送や敷設等の作業時において、その最
小曲げ半径を越える曲げが発生し易く、このような場合
には、超電導ケーブルの超電導特性が劣化してしまうと
いう問題があった。[0010] The superconducting cable has a value of a bending radius at which the superconducting characteristics are remarkably degraded, that is, a critical bending radius (hereinafter, referred to as a minimum bending radius) for maintaining the superconducting characteristics. In the above-described superconducting cable, since the distortion in the superconducting cable is transmitted to the superconducting conductor in the superconducting conductor at a large rate, there is a great restriction on the minimum bending radius. If the superconducting cable is restricted by a large minimum bending radius as described above, bending exceeding the minimum bending radius is likely to occur during work such as transporting and laying the superconducting cable performed at room temperature, and in such a case, However, there is a problem that the superconducting characteristics of the superconducting cable are deteriorated.
【００１１ 】本発明は、このような問題を解決するた
めになされたもので、超電導ケーブルにおいて、その最
小曲げ半径を向上させ、超電導ケーブルの運送時や敷設
時等の常温における作業時に生じる曲げに際しても、超
電導特性の劣化を生じないようにすることを目的とす
る。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. In a superconducting cable, the minimum bending radius thereof is improved so that the superconducting cable can be bent at the time of working at room temperature such as during transportation or laying. Another object of the present invention is to prevent superconducting characteristics from deteriorating.
【００１２ 】[0012]
【課題を解決するための手段】本発明は、パイプ状のフ
ォーマの周囲に、複数本のテープ状の超電導導体が巻回
されてなる超電導ケーブルにおいて、前記フォーマと超
電導導体との間に、潤滑層を設けることによって前記課
題を解決するものである。また、パイプ状のフォーマ上
にテープ材が巻回され、このテープ材の周囲に複数本の
テープ状の超電導導体が巻回されてなる超電導ケーブル
においては、そのフォーマとテープ材との間、あるいは
テープ材と超電導導体との間に潤滑層を設けるものであ
る。このような超電導ケーブルであれば、フォーマと超
電導導体との間の滑り性が改善され、超電導ケーブルに
おける最小曲げ半径を向上させることができる。SUMMARY OF THE INVENTION The present invention relates to a superconducting cable comprising a plurality of tape-shaped superconducting conductors wound around a pipe-shaped former, wherein lubrication is provided between the former and the superconducting conductor. This problem is solved by providing a layer. Further, in a superconducting cable in which a tape material is wound on a pipe-shaped former and a plurality of tape-shaped superconducting conductors are wound around the tape material, between the former and the tape material, or A lubricating layer is provided between the tape material and the superconducting conductor. With such a superconducting cable, the slipperiness between the former and the superconducting conductor is improved, and the minimum bending radius of the superconducting cable can be improved.
【００１３ 】[0013]
【発明の実施の形態】以下、本発明に係る超電導ケーブ
ル一実施形態について図面に基づいて説明する。図１
は、本発明の超電導ケーブルの一実施形態を示す斜視図
である。この形態の超電導ケーブル３１は、転位撚り型
の超電導ケーブルであり、潤滑層３２がフォーマ２２と
超電導導体２５との間に設けられていること以外は、図
５および６に示す従来の転位撚り型超電導ケーブル２１
と同様の構造を有するものである。よって、図１に示す
超電導ケーブル３１においては、従来の転位撚り型超電
導ケーブル２１と同様の構造のものには、図５および６
と同様の符号を付すとともに、その詳しい説明を省略す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a superconducting cable according to the present invention will be described below with reference to the drawings. Figure 1
1 is a perspective view showing one embodiment of a superconducting cable of the present invention. The superconducting cable 31 of this embodiment is a dislocation twisted type superconducting cable, except that the lubricating layer 32 is provided between the former 22 and the superconducting conductor 25, as shown in FIGS. Superconducting cable 21
Has the same structure as Therefore, in the superconducting cable 31 shown in FIG. 1, a superconducting cable 31 having the same structure as that of the conventional dislocation twist type superconducting cable 21 has the structure shown in FIGS.
The same reference numerals are given, and the detailed description is omitted.
【００１４ 】この超電導ケーブル３１は、パイプ状の
フォーマ２２上に、潤滑層３２が形成され、この潤滑層
３２の形成されたフォーマ２２の周囲に、転位超電導テ
ープユニット２４が巻回されてなるものである。前記フ
ォーマ２２は、ステンレス鋼、銅パイプなどの金属材料
からなるものである。このようなフォーマ２２の表面
は、該フォーマ２２と超電導導体２５間の通電を抑制す
るために電気絶縁層（図示略）が形成され、絶縁処理が
施されている。なお、この場合、絶縁層はフォーマ２２
と潤滑層３２との間に形成されているが、これに限らず
潤滑層３２と超電導導体２５との間に設けることも可能
である。The superconducting cable 31 has a lubricating layer 32 formed on a pipe-shaped former 22 and a dislocation superconducting tape unit 24 wound around the former 22 on which the lubricating layer 32 is formed. It is. The former 22 is made of a metal material such as stainless steel or copper pipe. An electric insulating layer (not shown) is formed on the surface of such a former 22 in order to suppress electric conduction between the former 22 and the superconducting conductor 25, and is subjected to an insulating treatment. In this case, the insulating layer is formed by the former 22
Although it is formed between the lubrication layer 32 and the lubrication layer 32, the invention is not limited to this.
【００１５ 】上記潤滑層３２は、シリコングリス、ア
ビエソーングリス等のグリスなどの潤滑材をフォーマ２
２上に塗布することにより形成することができる。ま
た、これらの潤滑層３２においては、フォーマ２２と超
電導導体２５とのすべり性が十分に確保されるようであ
れば、フォーマ２２上全体に形成しても、その一部分に
形成されるものであってもよいが、十分なすべり性を確
保するためにフォーマ上全体に均一に形成されることが
望ましい。The lubricating layer 32 is made of a lubricating material such as grease such as silicon grease or Abiesson grease.
2 can be formed by coating. Further, in the lubricating layer 32, if the slipperiness between the former 22 and the superconducting conductor 25 is sufficiently ensured, the lubricating layer 32 may be formed on the entirety of the former 22 or formed on a part thereof. However, in order to ensure sufficient slipperiness, it is desirable that the entirety be formed uniformly on the former.
【００１６ 】このとき、潤滑層３２の厚さとしては、
フォーマ２２と超電導導体２５とのすべり性が十分に確
保されるようであれば特に限定されるものではないが、
０．０５〜１．０ｍｍとされることが好ましい。この厚
さが、０．０５ｍｍ未満であるとフォーマ２２と超電導
導体２５とのすべり性が劣ることとなる。また、超電導
ケーブル３１には、導体厚さ、冷媒流露等の大きさ等と
の関係によりその外径に制約があるが、潤滑層３２の厚
さが０．１ｍｍを越えるとこれらの制約に影響すること
になり不都合となる。At this time, the thickness of the lubricating layer 32 is
There is no particular limitation as long as the slipperiness between the former 22 and the superconducting conductor 25 is sufficiently ensured.
It is preferably 0.05 to 1.0 mm. If the thickness is less than 0.05 mm, the slipperiness between the former 22 and the superconducting conductor 25 will be poor. Further, the outer diameter of the superconducting cable 31 is restricted by the relationship with the conductor thickness, the size of the refrigerant flow and the like, but if the thickness of the lubricating layer 32 exceeds 0.1 mm, these restrictions are affected. This is inconvenient.
【００１７ 】上記超電導導体２５は、転位超電導テー
プユニット２４が巻回されて形成されたものである。こ
の転位超電導テープユニット２４については、従来例で
説明した図５および６に示すものと同様の構造を有す
る。なお、この例は、フォーマ２２上に形成される超電
導導体２５として、転位超電導テープユニット２４が用
いられているが、本発明における超電導導体２５として
は、これに限定されるものではない。例えば、従来例で
説明した図３に示す構造の積層型の超電導ケーブル１の
ように、超電導多心素線（超電導素線）１３を矩形状に
塑性加工してテープ状に平坦化されたテープ状の超電導
導体３であってもよいし、超電導体からなる超電導線材
を塑性加工してテープ状とした構成の超電導導体であっ
てもよい。さらに、本発明の超電導ケーブルにおいて
は、図３に示す構造のもののように、テープ状の超電導
導体３がスパイラル状に巻回されてなる超電導導体層４
が複数層積層されてなる積層型の構造であってもよい。The superconducting conductor 25 is formed by winding a dislocation superconducting tape unit 24. The dislocation superconducting tape unit 24 has the same structure as that shown in FIGS. 5 and 6 described in the conventional example. In this example, the superconducting tape unit 24 is used as the superconducting conductor 25 formed on the former 22, but the superconducting conductor 25 in the present invention is not limited to this. For example, a tape obtained by plastically processing a superconducting multi-core element wire (superconducting element wire) 13 into a rectangular shape and flattening it into a tape shape like the laminated superconducting cable 1 having the structure shown in FIG. The superconducting conductor 3 may be a superconducting conductor 3 or a tape-shaped superconducting conductor formed by plastically processing a superconducting wire made of a superconductor. Further, in the superconducting cable of the present invention, as in the structure shown in FIG. 3, a superconducting conductor layer 4 in which a tape-shaped superconducting conductor 3 is spirally wound.
May be a laminated structure in which a plurality of layers are laminated.
【００１８ 】次に、本発明に係る超電導ケーブルの第
２の実施形態について図面に基づいて説明する。図２
は、本発明の超電導ケーブルの一実施形態を示す斜視図
である。この形態の超電導ケーブル４１は、フォーマ２
２上に潤滑層４２が形成され、この潤滑層４２が形成さ
れたフォーマ２２の周上にテープ材４３が巻回され、こ
のテープ材４３の周上に複数本のテープ状の超電導導体
２５が巻回されてなるものであり、テープ材４３が形成
されていること以外は、その構造を上述の超電導ケーブ
ル３１と同様にする。よって、図２においては、図１と
同様の構造のものには同様の符号を付して説明するとと
もに、その説明を省略する。Next, a second embodiment of the superconducting cable according to the present invention will be described with reference to the drawings. FIG.
1 is a perspective view showing one embodiment of a superconducting cable of the present invention. The superconducting cable 41 of this form is
2, a tape material 43 is wound around the former 22 on which the lubricating layer 42 is formed, and a plurality of tape-shaped superconducting conductors 25 are wound around the tape material 43. The structure is the same as that of the above-described superconducting cable 31 except that the tape material 43 is formed. Therefore, in FIG. 2, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
【００１９ 】上記テープ材４３は綿、紙などからなる
絶縁性の不織布や、綿テープ、ポリエステルテープ等か
らなり、超電導ケーブル４１におけるフォーマ２２と超
電導導体２５との電気絶縁性を維持するためにのために
も用いられるものである。この例においては、前記フォ
ーマ２２とテープ材４３との間に、先に説明した実施形
態である超電導ケーブル３１における潤滑層３２と同様
の形態の潤滑層４２が形成されている。なお、この形態
において潤滑層４２は、テープ材４３と超電導導体２５
との間に設けてもよい。The tape member 43 is made of an insulating non-woven fabric made of cotton, paper, or the like, a cotton tape, a polyester tape, or the like, and is used to maintain the electrical insulation between the former 22 and the superconducting conductor 25 in the superconducting cable 41. It is also used for In this example, a lubricating layer 42 having the same form as the lubricating layer 32 in the superconducting cable 31 of the above-described embodiment is formed between the former 22 and the tape material 43. In this embodiment, the lubricating layer 42 is formed of the tape material 43 and the superconducting conductor 25.
And may be provided between them.
【００２０ 】このような潤滑層３２、４２が形成され
た、超電導ケーブル３１、４１であれば、フォーマ２２
と超電導導体２５（各超電導導体）との間のすべり性が
向上されるので、超電導ケーブル３１の最小曲げ半径の
制限が緩和される。すなわち、従来のものよりも許容曲
げ半径が向上する。よって、このような超電導ケーブル
においては、ケーブル化後の輸送時や運搬時等の作業時
に、曲げによる歪みが生じても超電導ケーブル内の超電
導導体における超電導特性の低下を従来のものよりも軽
減することができる。また、従来の構造の超電導ケーブ
ルにおいて、その構成要素を変化させることなく、潤滑
層を形成することができるものであるので、フォーマと
超電導導体、あるいはテープ材と超電導導体の組み合わ
せに左右されない導体設計が可能となる。また、積層型
の超電導ケーブルのように、スパイラルピッチの制約が
機械的特性以外の要因からも規制される導体構造におい
ても、超電導導体をフォーマとのすべり性を確保できる
ので導体設計が容易となる。In the case of the superconducting cables 31 and 41 having such lubricating layers 32 and 42 formed thereon, the former 22
And the superconducting conductor 25 (each superconducting conductor) is improved in slipperiness, so that the restriction on the minimum bending radius of the superconducting cable 31 is relaxed. That is, the allowable bending radius is improved as compared with the conventional one. Therefore, in such a superconducting cable, the deterioration of the superconducting characteristics of the superconducting conductor in the superconducting cable is reduced as compared with the conventional one even when distortion due to bending occurs during work such as transportation or transportation after the conversion to a cable. be able to. In addition, since the lubricating layer can be formed without changing the components of the conventional superconducting cable, the conductor design is not affected by the combination of the former and the superconducting conductor, or the tape material and the superconducting conductor. Becomes possible. Moreover, even in a conductor structure in which the restriction of the spiral pitch is restricted by factors other than the mechanical characteristics, such as a laminated superconducting cable, the superconducting conductor can be made to be slippery with the former, so that the conductor design is facilitated. .
【００２１ 】[0021]
【実施例】以下、本発明を、実施例および比較例によ
り、具体的に説明するが、本発明はこの実施例のみに限
定されるものではない。図２に示す構造の超電導ケーブ
ルを作製した。 （実施例１）フォーマ２２としてＳＵＳ性の厚さ０.６
ｍｍ、外径２６.５ｍｍのコルゲート管を用い、このフ
ォーマ２２上にシリコングリスを均一に塗布して潤滑層
４２を形成した。ついで、この潤滑層４２上に、テープ
材４３である幅５０ｍｍ、厚さ０.２ｍｍの綿テープを
１/２ラップ巻きにし、このテープ材４３の上に、超電
導導体２５として、５本のＢｉ−２２２３系銀シーステ
ープ材（幅１、６ｍｍ、厚さ０.２５ｍｍ）を転位より
してなる転位超電導テープユニット２４を、巻回して実
施例の超電導ケーブルを得た。EXAMPLES Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the present invention is not limited to only these Examples. A superconducting cable having the structure shown in FIG. 2 was produced. (Embodiment 1) The thickness of the SUS material is 0.6 as the former 22.
Using a corrugated pipe having a diameter of 26.5 mm and an outer diameter of 26.5 mm, a lubricating layer 42 was formed by uniformly applying silicon grease on the former 22. Next, a 50 mm wide, 0.2 mm thick cotton tape, which is a tape material 43, is wound on the lubricating layer 42 by a half wrap, and five Bi conductive superconductors 25 are formed on the tape material 43. A superconducting cable unit of Example was obtained by winding a dislocation superconducting tape unit 24 formed by transposition of a -2223 series silver sheath tape material (width 1, 6 mm, thickness 0.25 mm).
【００２２ 】（比較例１）上記ＳＵＳ性のフォーマ２
２上に、潤滑層４２を形成しないで、直接上記不織布テ
ープからなるテープ材４３を巻回した以外は、上記実施
例１と同様にして比較例１の超電導ケーブルを得た。(Comparative Example 1) The above-mentioned SUS type former 2
A superconducting cable of Comparative Example 1 was obtained in the same manner as in Example 1 except that the tape material 43 made of the nonwoven fabric tape was wound directly on the sample 2 without forming the lubricating layer 42.
【００２３ 】実施例１および比較例１の超電導ケーブ
ルにおける最小曲げ半径を測定した。超電導ケーブルに
おける直線状態と曲げ状態における臨界電流密度を測定
し、それらの値を比較し、曲げ状態の超電導ケーブルに
おける臨界電流密度が、直線状態の超電導ケーブルにお
ける臨界電流密度よりも５％低下する値となる場合の超
電導ケーブルの曲げ半径を最小曲げ半径として測定し
た。曲げ状態の超電導ケーブルにおける臨界電流密度
は、実施例１および比較例１の超電導ケーブルを、常温
においてある曲げ半径で曲げた後に、これらを曲げたま
ま液体窒素温度まで冷却して、それぞれにおける臨界電
流密度（Ｉｃ）を測定した。この結果、実施例１におけ
る最小曲げ半径は１０００ｍｍ、比較例１における最小
曲げ半径は３６００ｍｍであった。すなわち、実施例１
の超電導ケーブルにおいては、比較例１のものより最小
曲げ半径が小さく、比較例１のもの大きく曲げた場合で
も臨界電流密度の損失が少ないといえる。The minimum bending radii of the superconducting cables of Example 1 and Comparative Example 1 were measured. The critical current density of the superconducting cable in the straight state and the bending state is measured and the values are compared. The critical current density of the superconducting cable in the bending state is 5% lower than the critical current density in the superconducting cable in the straight state. The bending radius of the superconducting cable in the case of was measured as the minimum bending radius. The critical current density of the superconducting cable in the bent state is obtained by bending the superconducting cables of Example 1 and Comparative Example 1 at a certain bending radius at room temperature, and cooling them to the temperature of liquid nitrogen while bending them. The density (Ic) was measured. As a result, the minimum bending radius in Example 1 was 1000 mm, and the minimum bending radius in Comparative Example 1 was 3600 mm. That is, the first embodiment
In the superconducting cable of Example 1, the minimum bending radius is smaller than that of Comparative Example 1, and it can be said that even when the cable of Comparative Example 1 is bent greatly, the loss of the critical current density is small.
【００２４ 】次に、潤滑層の厚さを変えて超電導ケー
ブルを製造し、これらの最小曲げ半径を測定した。結果
を表１に示す。これらの結果から、潤滑層の厚さは０．
０５ｍｍ以上が好ましいことがわかる。Next, superconducting cables were manufactured by changing the thickness of the lubricating layer, and their minimum bending radii were measured. Table 1 shows the results. From these results, the thickness of the lubricating layer was 0.1 mm.
It can be seen that 05 mm or more is preferable.
【００２５ 】[0025]
【表１】 [Table 1]
【００２６ 】[0026]
【発明の効果】以上説明したように本発明の超電導ケー
ブルにあっては、潤滑層を有するものであるので、フォ
ーマと超電導導体とのすべり性が良好となり、その最小
曲げ半径が向上され、超電導ケーブルの運送時や敷設時
等の常温における作業時の曲げに際しても、超電導特性
の劣化を生じることがないものである。As described above, since the superconducting cable of the present invention has a lubricating layer, the slipperiness between the former and the superconducting conductor is improved, the minimum bending radius is improved, and the superconducting cable is improved. The superconducting characteristics are not degraded even when the cable is bent at the time of working at room temperature, such as during transportation or laying.
【図１】 本発明に係る超電導ケーブルの一実施形態を
示す一部を断面とした斜視図。FIG. 1 is a perspective view, partially in section, showing an embodiment of a superconducting cable according to the present invention.
【図２】 本発明に係る超電導ケーブルの他の実施形態
を示す一部を断面とした斜視図。FIG. 2 is a perspective view, partially in section, showing another embodiment of the superconducting cable according to the present invention.
【図３】 （ａ）積層型超電導ケーブルの一例を示した
一部を断面とした斜視図。 （ｂ）積層型超電導ケーブルの内部構造を説明するため
の図で、その一部を断面とした斜視図である。FIG. 3 (a) is a perspective view showing a part of a section of an example of a laminated superconducting cable. (B) It is a figure for explaining the internal structure of a lamination type superconducting cable, and is a perspective view which made a part of it a section.
【図４】 超電導ケーブルに用いられる超電導導体の一
例を示した一部を断面とした斜視図である。FIG. 4 is a partially sectional perspective view showing an example of a superconducting conductor used for a superconducting cable.
【図５】 転位撚り型超電導ケーブルの一例の一部を断
面とした斜視図である。FIG. 5 is a perspective view in which a part of an example of a dislocation twist type superconducting cable is sectioned.
【図６】 （ａ）転位撚り型超電導ケーブルに用いられ
るの転位超電導テープユニットの一例を示す斜視図であ
る。 （ｂ）（ａ）に示す転位超電導テープユニットの断面図
である。FIG. 6 (a) is a perspective view showing an example of a dislocation superconducting tape unit used for a dislocation twist type superconducting cable. (B) It is sectional drawing of the dislocation superconducting tape unit shown to (a).
３１、４１・・・超電導ケーブル 、３２、４２…潤滑層
２５…超電導導体、２４・・・転位超電導テープユニッ
ト、２２・・・フォーマ 、４３・・・テープ材、31, 41: superconducting cable, 32, 42: lubricating layer 25: superconducting conductor, 24: dislocation superconducting tape unit, 22: former, 43: tape material,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 知史 東京都江東区木場１丁目５番１号 株式会 社フジクラ内 (72)発明者 斉藤 隆 東京都江東区木場１丁目５番１号 株式会 社フジクラ内 (72)発明者 長屋 重夫 愛知県名古屋市緑区大高町字北関山20番地 の１ 中部電力株式会社電力中央研究所内 Ｆターム(参考） 5G321 AA05 AA06 BA01 CA18 CA53 CB04 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Satoshi Suzuki 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Co., Ltd. (72) Inventor Takashi Saito 1-1-1, Kiba, Koto-ku, Tokyo Stock Company Inside Fujikura Co., Ltd. (72) Inventor Shigeo Nagaya 20-1, Kitakanyama, Odaka-cho, Midori-ku, Nagoya-shi, Aichi F-term in Chubu Electric Power Co., Inc. Central Research Institute of Electric Power Industry 5G321 AA05 AA06 BA01 CA18 CA53 CB04
Claims (3)
テープ状の超電導導体が巻回されてなる超電導ケーブル
であって、 前記フォーマと超電導導体との間に潤滑層が形成されて
いることを特徴とする超電導ケーブル。1. A superconducting cable in which a plurality of tape-shaped superconducting conductors are wound around a pipe-shaped former, wherein a lubricating layer is formed between the former and the superconducting conductor. A superconducting cable characterized by the following.
され、このテープ材の周囲に複数本のテープ状の超電導
導体が巻回されてなる超電導ケーブルであって、 前記フォーマとテープ材との間、あるいはテープ材とフ
ォーマとの間に潤滑層が形成されていることを特徴とす
る超電導ケーブル。2. A superconducting cable in which a tape material is wound on a pipe-shaped former, and a plurality of tape-shaped superconducting conductors are wound around the tape material. A superconducting cable characterized in that a lubricating layer is formed between the tape material and the tape material and the former.
より形成されたものであることを特徴とする超電導ケー
ブル。3. The superconducting cable according to claim 2, wherein said lubricating layer is formed by applying grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199648A JP4722258B2 (en) | 2000-06-30 | 2000-06-30 | Superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199648A JP4722258B2 (en) | 2000-06-30 | 2000-06-30 | Superconducting cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002015629A true JP2002015629A (en) | 2002-01-18 |
| JP4722258B2 JP4722258B2 (en) | 2011-07-13 |
Family
ID=18697632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000199648A Expired - Fee Related JP4722258B2 (en) | 2000-06-30 | 2000-06-30 | Superconducting cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4722258B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5967752B2 (en) * | 2009-10-07 | 2016-08-10 | 国立大学法人九州工業大学 | Superconducting cable and AC transmission cable |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63225412A (en) * | 1986-12-15 | 1988-09-20 | 住友電気工業株式会社 | Heat processing of multi-core superconductor |
| JPH01304608A (en) * | 1988-06-01 | 1989-12-08 | Mitsubishi Electric Corp | Superconductive transmission line |
| JPH0371518A (en) * | 1989-08-09 | 1991-03-27 | Sumitomo Electric Ind Ltd | Superconductor |
| JPH04218215A (en) * | 1990-04-13 | 1992-08-07 | Sumitomo Electric Ind Ltd | Superconductive conductor |
| JPH04292808A (en) * | 1991-03-20 | 1992-10-16 | Sumitomo Electric Ind Ltd | Multicore superconductive wire |
| JPH06349358A (en) * | 1993-06-11 | 1994-12-22 | Sumitomo Electric Ind Ltd | Manufacture of oxide high temperature superconductive wire material |
| JPH06349346A (en) * | 1993-06-04 | 1994-12-22 | Furukawa Electric Co Ltd:The | Oxide superconductor for power transportation |
| JPH1097815A (en) * | 1996-09-20 | 1998-04-14 | Fumio Sumiyoshi | Bismuth oxide multicore superconducting wire and its manufacture |
| JPH1186649A (en) * | 1997-07-15 | 1999-03-30 | Furukawa Electric Co Ltd:The | Oxide superconducting conductor, cable and laminated conductor using it, and manufacture of oxide superconducting conductor |
| JPH11203959A (en) * | 1998-01-19 | 1999-07-30 | Fujikura Ltd | Superconductive cable and its manufacture |
| JPH11203961A (en) * | 1998-01-19 | 1999-07-30 | Fujikura Ltd | Oxide superconductive cable unit and oxide superconductive cable equipped with it |
| JP2000036221A (en) * | 1998-05-12 | 2000-02-02 | Chubu Electric Power Co Inc | Compression molded conductor of oxide superconductor and manufacture thereof |
| JP2000348927A (en) * | 1999-06-04 | 2000-12-15 | Chubu Electric Power Co Inc | Oxide superconducting compression molded conductor and manufacture thereof |
| WO2001033578A1 (en) * | 1999-10-29 | 2001-05-10 | Nkt Cables A/S | Method of producing a superconducting cable |
-
2000
- 2000-06-30 JP JP2000199648A patent/JP4722258B2/en not_active Expired - Fee Related
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63225412A (en) * | 1986-12-15 | 1988-09-20 | 住友電気工業株式会社 | Heat processing of multi-core superconductor |
| JPH01304608A (en) * | 1988-06-01 | 1989-12-08 | Mitsubishi Electric Corp | Superconductive transmission line |
| JPH0371518A (en) * | 1989-08-09 | 1991-03-27 | Sumitomo Electric Ind Ltd | Superconductor |
| JPH04218215A (en) * | 1990-04-13 | 1992-08-07 | Sumitomo Electric Ind Ltd | Superconductive conductor |
| JPH04292808A (en) * | 1991-03-20 | 1992-10-16 | Sumitomo Electric Ind Ltd | Multicore superconductive wire |
| JPH06349346A (en) * | 1993-06-04 | 1994-12-22 | Furukawa Electric Co Ltd:The | Oxide superconductor for power transportation |
| JPH06349358A (en) * | 1993-06-11 | 1994-12-22 | Sumitomo Electric Ind Ltd | Manufacture of oxide high temperature superconductive wire material |
| JPH1097815A (en) * | 1996-09-20 | 1998-04-14 | Fumio Sumiyoshi | Bismuth oxide multicore superconducting wire and its manufacture |
| JPH1186649A (en) * | 1997-07-15 | 1999-03-30 | Furukawa Electric Co Ltd:The | Oxide superconducting conductor, cable and laminated conductor using it, and manufacture of oxide superconducting conductor |
| JPH11203959A (en) * | 1998-01-19 | 1999-07-30 | Fujikura Ltd | Superconductive cable and its manufacture |
| JPH11203961A (en) * | 1998-01-19 | 1999-07-30 | Fujikura Ltd | Oxide superconductive cable unit and oxide superconductive cable equipped with it |
| JP2000036221A (en) * | 1998-05-12 | 2000-02-02 | Chubu Electric Power Co Inc | Compression molded conductor of oxide superconductor and manufacture thereof |
| JP2000348927A (en) * | 1999-06-04 | 2000-12-15 | Chubu Electric Power Co Inc | Oxide superconducting compression molded conductor and manufacture thereof |
| WO2001033578A1 (en) * | 1999-10-29 | 2001-05-10 | Nkt Cables A/S | Method of producing a superconducting cable |
| JP2003513422A (en) * | 1999-10-29 | 2003-04-08 | エヌケイティ ケイブルズ アクティーゼルスカブ | Superconducting cable manufacturing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5967752B2 (en) * | 2009-10-07 | 2016-08-10 | 国立大学法人九州工業大学 | Superconducting cable and AC transmission cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4722258B2 (en) | 2011-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2099806C1 (en) | Superconductive cable wire | |
| US5929000A (en) | Multifilamentary oxide superconducting wires | |
| US7106156B2 (en) | Superconductor cables and magnetic devices | |
| JP3658841B2 (en) | Oxide superconducting wire and manufacturing method thereof | |
| JP4174824B2 (en) | Superconducting cable | |
| JPH11506260A (en) | AC cable with twisted electrical conductor | |
| JPH11506261A (en) | AC cable with two concentric conductor arrangements of twisted individual conductors | |
| JP2002015629A (en) | Superconductive cable | |
| JP4423581B2 (en) | Superconducting cable | |
| EP0650206B2 (en) | Superconducting conductor | |
| JP3529925B2 (en) | Oxide superconducting cable conductor for AC | |
| JPH10188690A (en) | Structure for superconductor | |
| AU744524B2 (en) | Integrated tape | |
| JP3724128B2 (en) | Oxide superconducting wire, manufacturing method thereof, and oxide superconducting stranded wire and conductor using the same | |
| JP3033624B2 (en) | Ceramic superconducting conductor | |
| JP3549296B2 (en) | Multilayer superconducting conductor | |
| JP3445308B2 (en) | Oxide superconducting conductor for power transport and method for producing the same | |
| JP3568767B2 (en) | Superconducting cable and manufacturing method thereof | |
| JP2001325837A (en) | Superconducting cable | |
| JPH1139963A (en) | Oxide superconductive wire material, stranded wire, method for producing material and stranded wire thereof, and oxide superconductor | |
| JP2523630B2 (en) | Superconducting cable | |
| JP3775091B2 (en) | Superconducting wire and method for manufacturing the same | |
| JPH08212847A (en) | Composite multicore superconducting wire | |
| Maeda et al. | Phase Formation and Critical Current Density of Ag‐Sheathed Bi‐2223 Tapes with Insulating Sr‐V‐O Barriers | |
| JPH09115357A (en) | Tape form oxide superconducting stranded wire and superconductor using the stranded wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061218 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090629 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090707 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090902 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100525 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100825 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100917 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20101130 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20101220 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110218 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110329 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110406 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140415 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |