EP2105994B1 - Joint structure for connecting two superconducting cables - Google Patents

Joint structure for connecting two superconducting cables Download PDF

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Publication number
EP2105994B1
EP2105994B1 EP09154772.9A EP09154772A EP2105994B1 EP 2105994 B1 EP2105994 B1 EP 2105994B1 EP 09154772 A EP09154772 A EP 09154772A EP 2105994 B1 EP2105994 B1 EP 2105994B1
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EP
European Patent Office
Prior art keywords
sleeve
superconducting
tube
layer
cables
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EP09154772.9A
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German (de)
French (fr)
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EP2105994A1 (en
Inventor
Nicolas Lallouet
Sébastien Delplace
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Nexans SA
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Nexans SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/68—Connections to or between superconductive connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/11—End pieces for multiconductor cables supported by the cable and for facilitating connections to other conductive members, e.g. for liquid cooled welding cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket

Definitions

  • the present invention relates to a device for connecting two abutting superconducting cables.
  • the invention is particularly applicable to high voltage.
  • a superconducting cable consists essentially of a central support, generally of cylindrical shape, around which is wound a superconductive material and is placed an insulating sheath around the superconductor.
  • the central support consists of an electrically conductive material, for example a cable or a copper tube.
  • the superconducting material may be in the form of a ribbon wrapped around the central support in one or more layers.
  • EP 1 841 011 describes a connection termination of one end of a superconducting cable to a conventional non-superconducting conductor.
  • This connection device comprises a central conductive connection member connecting the ends of the two stripped cables arranged in a hollow tube of an insulating spacer formed of a resin part and this tube.
  • This connection device comprises a central conductive connection member connecting the ends of the two stripped cables and disposed in an insulating member.
  • Such devices for connecting abutting superconducting cables do not allow the connection to be dismounted and / or reassembled easily, without having to cut a portion of cable, for example if one of the superconducting cables must be replaced.
  • the invention proposes a device for connecting two abutting superconducting cables, which can be disassembled without intervention on the cables per se.
  • the invention relates to a connection device according to claim 1.
  • the tube After removal of the outer coating of insulating material, the tube can be disconnected from the sleeves and disassembled, ensuring its separation of the sleeves and disassembly of the connection device.
  • Said sleeve may comprise at least one orifice for introducing a welding material in the space between the layer of superconducting material and the inner wall of the sleeve.
  • Said sleeve may comprise electrical contact means on its outer surface.
  • Said electrical contact means are preferably formed by annular grooves holding metal contact strips.
  • Said tube is advantageously mechanically connected to said sleeve.
  • Said tube can be connected by screws to said sleeve.
  • Said sleeve and said tube are preferably metallic.
  • the end of the superconducting cable shown on the figure 1 consists of a central support 1 resistive electrically conductive and substantially cylindrical shape.
  • This support may be for example a copper wire cable or a low-resistivity metal tube, for example copper or silver-plated copper.
  • Two superimposed layers 2, 3 of superconducting material surround the central support 1.
  • An electrically insulating sheath 4 surrounds the superconducting layer 3.
  • the superconducting layers 2, 3 may be formed by ribbons or wires of superconducting material wound respectively around the central support 1.
  • the cable may comprise only one superconducting layer 2 or 3.
  • Superconducting wires or ribbons can be for example of the BSCCO type (Bi 2 Sr 2 Ca 2 Cu 3 O x ) or YBaCuO type.
  • the end of the cable is stripped in steps of stairs so as to show successively, starting from the cable towards its end and over a length that can be variable, the first superconducting layer 3, the second superconducting layer 2 and the central support 1.
  • the end of the electrically insulating sheath is conically formed at its end 4A, in order to form in section a bevel going from its external diameter to an external diameter slightly greater than that of the superconducting layer 3.
  • a conductive sleeve 5 is fitted around the stripped portion of the cable as shown in FIG. figure 2 and particularly visible on the figure 3 .
  • This sleeve 5 is of the same type as that described in the application for patent EP 1 841 011 .
  • This metal sleeve 5 comes to cap the stripped central support 1 and the superconducting layers 2, 3 stripped.
  • This sleeve comprises a first portion 5A and a second portion 5B.
  • the first part 5A has the shape of a hollow cylinder whose inner diameter is very slightly greater than the diameter of the support 1 so that the first portion 5A of the sleeve can be fixed on the support 1 by simple interlocking or crimping.
  • the sleeve may for example be made of copper and when the central support is also made of copper, a good copper-copper electrical connection is thus obtained. Copper can also be plated with silver.
  • the second portion 5B of the sleeve has substantially the shape of a hollow cylinder of length at least equal to the length of the stripped portions of the superconducting layers 2, 3 of way to cover them completely.
  • the internal diameter of the second portion 5B of the sleeve is greater than the diameter of the superconducting layer 3 (which has a diameter greater than that of the conductive layer 2) so that a space is provided between the inner wall of the second portion 5B the sleeve and the superconducting layers 2, 3.
  • An orifice 5C is pierced in the second portion 5B, of sufficient size to allow pouring through this orifice a powder of a welding material, or to directly cast a molten solder alloy, which will be located between the inner wall of the second portion 5B of the sleeve and the superconducting layers 2, 3.
  • the orifice may for example have an oblong shape.
  • the welding material at least partially fills the space between the second portion 5B of the sleeve and the superconducting layers 2, 3.
  • This material is electrically conductive and advantageously has a relatively low melting point, for example less than about 100 ° Celsius. It can be for example an alloy of composition Sn-Bi-Pb. This avoids damaging the superconducting layers by heating at too high a temperature, while allowing a good electrical connection between the superconducting layers and the sleeve 5.
  • the length of the sleeve is such that it completely covers the stripped portions 2, 3 of the superconducting layers, the stripped portion 1 of the central support and the end of the insulating sheath 4.
  • the second portion 5B of the sleeve is extended by a rounded outer end portion 5D having a maximum outer diameter greater than that of the sleeve and forming a radial shoulder 5E.
  • the sleeve 5 comprises on the outer wall of its second portion 5B electrical contact means, consisting of 5F grooves machined in the outer wall of the second portion 5B of the sleeve. These grooves are intended to accommodate metal contact strips having an annular shape.
  • the invention relates to a device for connecting two such abutting superconducting cables C, C ', and such a metal sleeve 5, 5' is fixed around the stripped portion of each superconducting cable, as shown in figure 4 .
  • a metal conductive tube 6 containing the sleeves 5, 5 'and connected thereto is disposed in abutment against the shoulders 5F, 5 F of the end portion 5D, 5'D of each sleeve.
  • This tube is of internal diameter slightly greater than the outer diameter of the second part of the sleeves and outer diameter substantially equal to the maximum outer diameter of the rounded end portion of each sleeve.
  • the tube 6 is mechanically connected to the sleeves 5, 5 ', for example by needle screws, not shown.
  • connection is then isolated by an outer coating 7 of insulating material, preferably a winding of paper ribbons. Due to the beveled shape 4A of the end of the outer sheath and the rounded shape of the end portion 5D, 5'D sleeves, it is possible to achieve this coating without any empty space that could lead to breakdowns.
  • a semiconductor layer for example made of carbon black paper, can be arranged between the metal connection and the outer coating 7.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Gas Or Oil Filled Cable Accessories (AREA)

Description

La présente invention concerne un dispositif de connexion de deux câbles supraconducteurs aboutés. L'invention s'applique tout particulièrement à la haute tension.The present invention relates to a device for connecting two abutting superconducting cables. The invention is particularly applicable to high voltage.

Un câble supraconducteur se compose essentiellement d'un support central, généralement de forme cylindrique, autour duquel est enroulé un matériau supraconducteur et est placée une gaine isolante autour du supraconducteur. Le support central est constitué d'un matériau électriquement conducteur, par exemple un câble ou un tube en cuivre. Le matériau supraconducteur peut être sous la forme d'un ruban enroulé autour du support central en une ou plusieurs couches.A superconducting cable consists essentially of a central support, generally of cylindrical shape, around which is wound a superconductive material and is placed an insulating sheath around the superconductor. The central support consists of an electrically conductive material, for example a cable or a copper tube. The superconducting material may be in the form of a ribbon wrapped around the central support in one or more layers.

Le document de brevet EP 1 841 011 décrit une terminaison de connexion d'une extrémité d'un câble supraconducteur à un conducteur classique non supraconducteur.The patent document EP 1 841 011 describes a connection termination of one end of a superconducting cable to a conventional non-superconducting conductor.

Un dispositif de connexion de deux câbles supraconducteurs est décrit dans le document de brevet EP 1 489 693 .A device for connecting two superconducting cables is described in the patent document EP 1 489 693 .

Ce dispositif de connexion comporte un organe de connexion conducteur central reliant les extrémités des deux câbles dénudés disposées dans un tube creux d'un espaceur isolant formé d'une partie en résine et de ce tube.This connection device comprises a central conductive connection member connecting the ends of the two stripped cables arranged in a hollow tube of an insulating spacer formed of a resin part and this tube.

Un dispositif de connexion de deux câbles supraconducteurs est également décrit dans le document de brevet EP 1 489 691 , lequel décrit par ailleurs le préambule de la revendication 1.A device for connecting two superconducting cables is also described in the document EP Patent 1,489,691 which furthermore describes the preamble of claim 1.

Ce dispositif de connexion comporte un organe de connexion conducteur central reliant les extrémités des deux câbles dénudés et disposé dans un élément isolant.This connection device comprises a central conductive connection member connecting the ends of the two stripped cables and disposed in an insulating member.

De tels dispositifs de connexion de câbles supraconducteurs aboutés ne permettent pas que la connexion soit démontée et/ou remontée aisément, sans avoir à couper une portion de câble, par exemple si un des câbles supraconducteurs doit être remplacé.Such devices for connecting abutting superconducting cables do not allow the connection to be dismounted and / or reassembled easily, without having to cut a portion of cable, for example if one of the superconducting cables must be replaced.

L'invention propose un dispositif de connexion de deux câbles supraconducteurs aboutés, qui puisse être démontée sans intervention sur les câbles en soi.The invention proposes a device for connecting two abutting superconducting cables, which can be disassembled without intervention on the cables per se.

Pour résoudre ce problème, l'invention concerne un dispositif de connexion selon la revendication 1.To solve this problem, the invention relates to a connection device according to claim 1.

Après enlèvement du revêtement externe de matière isolante, le tube peut être déconnecté des manchons et démonté, assurant sa séparation des manchons et le démontage du dispositif de connexion.After removal of the outer coating of insulating material, the tube can be disconnected from the sleeves and disassembled, ensuring its separation of the sleeves and disassembly of the connection device.

Son montage quant à lui est aisé à réaliser sur le terrain.Its assembly as for him is easy to realize on the ground.

Grâce à l'invention, il est de plus possible de réaliser une connexion de deux câbles à support central conducteur de diamètre relativement élevé et de transport d'intensité de courant relativement élevé.Thanks to the invention, it is furthermore possible to make a connection of two relatively high-diameter conductor central support cables and relatively high intensity current transport cables.

Ledit manchon peut comporter au moins un orifice permettant d'introduire un matériau de soudure dans l'espace situé entre la couche de matériau supraconducteur et la paroi interne du manchon.Said sleeve may comprise at least one orifice for introducing a welding material in the space between the layer of superconducting material and the inner wall of the sleeve.

Ledit manchon peut comporter des moyens de contact électrique sur sa surface extérieure.Said sleeve may comprise electrical contact means on its outer surface.

Lesdits moyens de contact électrique sont de préférence constitués par des gorges de forme annulaire maintenant des lamelles métalliques de contact.Said electrical contact means are preferably formed by annular grooves holding metal contact strips.

Ledit tube est avantageusement connecté mécaniquement sur ledit manchon.Said tube is advantageously mechanically connected to said sleeve.

Ledit tube peut être connecté par des vis sur ledit manchon.Said tube can be connected by screws to said sleeve.

Ledit manchon et ledit tube sont de préférence métalliques.Said sleeve and said tube are preferably metallic.

L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant qu'un mode de réalisation préféré de l'invention.

  • La figure 1 est une vue de l'extrémité d'un premier câble supraconducteur.
  • La figure 2 représente une première étape de montage d'un dispositif de connexion conforme à l'invention.
  • La figure 3 est une représentation à plus grande échelle de la figure 2.
  • La figure 4 est une vue en coupe de deux câbles supraconducteurs pourvu d'un dispositif de connexion conforme à l'invention.
  • La figure 5 est une vue en coupe de la connexion finale conforme à l'invention.
The invention is described below in more detail with the aid of figures representing only a preferred embodiment of the invention.
  • The figure 1 is a view of the end of a first superconducting cable.
  • The figure 2 represents a first step of mounting a connection device according to the invention.
  • The figure 3 is a larger scale representation of the figure 2 .
  • The figure 4 is a sectional view of two superconducting cables provided with a connection device according to the invention.
  • The figure 5 is a sectional view of the final connection according to the invention.

L'extrémité du câble supraconducteur représenté sur la figure 1 est constituée d'un support central 1 résistif électriquement conducteur et de forme sensiblement cylindrique. Ce support peut être par exemple un câble de fils de cuivre ou un tube métallique à faible résistivité, en cuivre ou en cuivre argenté par exemple. Deux couches superposées 2, 3 d'un matériau supraconducteur entourent le support central 1. Une gaine électriquement isolante 4 entoure la couche supraconductrice 3.The end of the superconducting cable shown on the figure 1 consists of a central support 1 resistive electrically conductive and substantially cylindrical shape. This support may be for example a copper wire cable or a low-resistivity metal tube, for example copper or silver-plated copper. Two superimposed layers 2, 3 of superconducting material surround the central support 1. An electrically insulating sheath 4 surrounds the superconducting layer 3.

Les couches supraconductrices 2, 3 peuvent être formées par des rubans ou des fils en matériau supraconducteur enroulés respectivement autour du support central 1. De façon générale, le câble ne peut comporter qu'une seule couche supraconductrice 2 ou 3. Les fils ou rubans supraconducteurs peuvent être par exemple du type BSCCO (Bi2Sr2Ca2Cu3Ox) ou du type YBaCuO.The superconducting layers 2, 3 may be formed by ribbons or wires of superconducting material wound respectively around the central support 1. In general, the cable may comprise only one superconducting layer 2 or 3. Superconducting wires or ribbons can be for example of the BSCCO type (Bi 2 Sr 2 Ca 2 Cu 3 O x ) or YBaCuO type.

L'extrémité du câble est dénudée en marches d'escaliers de façon à faire apparaître successivement, en partant du câble vers son extrémité et sur une longueur qui peut être variable, la première couche supraconductrice 3, la seconde couche supraconductrice 2 puis le support central 1.The end of the cable is stripped in steps of stairs so as to show successively, starting from the cable towards its end and over a length that can be variable, the first superconducting layer 3, the second superconducting layer 2 and the central support 1.

L'extrémité de la gaine électriquement isolante est formée de façon conique à son extrémité 4A, afin de former en section un biseau allant de son diamètre externe à un diamètre externe légèrement supérieur à celui de la couche supraconductrice 3.The end of the electrically insulating sheath is conically formed at its end 4A, in order to form in section a bevel going from its external diameter to an external diameter slightly greater than that of the superconducting layer 3.

Un manchon 5 conducteur est emboîté autour de la partie dénudée du câble, comme illustré sur la figure 2 et particulièrement visible sur la figure 3.A conductive sleeve 5 is fitted around the stripped portion of the cable as shown in FIG. figure 2 and particularly visible on the figure 3 .

Ce manchon 5 est du même type que celui décrit dans la demande de brevet EP 1 841 011 .This sleeve 5 is of the same type as that described in the application for patent EP 1 841 011 .

Ce manchon métallique 5 vient coiffer le support central 1 dénudé et les couches supraconductrices 2, 3 dénudées. Ce manchon comporte une première partie 5A et une deuxième partie 5B. La première partie 5A a la forme d'un cylindre creux dont le diamètre interne est très légèrement supérieur au diamètre du support 1 de sorte que cette première partie 5A du manchon peut être fixée sur le support 1 par simple emboîtement ou sertissage. Le manchon peut par exemple être réalisé en cuivre et, lorsque le support central est également en cuivre, on obtient ainsi une bonne liaison électrique cuivre sur cuivre. Le cuivre peut également être plaqué en argent. La deuxième partie 5B du manchon a sensiblement la forme d'un cylindre creux de longueur au moins égale à la longueur des parties dénudées des couches supraconductrices 2, 3 de façon à les recouvrir complètement. Le diamètre interne de la deuxième partie 5B du manchon est supérieur au diamètre de la couche supraconductrice 3 (laquelle a un diamètre supérieur à celui de la couche conductrice 2) de sorte qu'un espace est ménagé entre la paroi interne de la deuxième partie 5B du manchon et les couches supraconductrices 2, 3. Un orifice 5C est percé dans la deuxième partie 5B, de dimensions suffisantes pour permettre de verser par cet orifice une poudre d'un matériau de soudure, ou de couler directement un alliage de soudure fondu, qui va se localiser entre la paroi interne de la deuxième partie 5B du manchon et les couches supraconductrices 2, 3. L'orifice peut par exemple avoir une forme oblongue.This metal sleeve 5 comes to cap the stripped central support 1 and the superconducting layers 2, 3 stripped. This sleeve comprises a first portion 5A and a second portion 5B. The first part 5A has the shape of a hollow cylinder whose inner diameter is very slightly greater than the diameter of the support 1 so that the first portion 5A of the sleeve can be fixed on the support 1 by simple interlocking or crimping. The sleeve may for example be made of copper and when the central support is also made of copper, a good copper-copper electrical connection is thus obtained. Copper can also be plated with silver. The second portion 5B of the sleeve has substantially the shape of a hollow cylinder of length at least equal to the length of the stripped portions of the superconducting layers 2, 3 of way to cover them completely. The internal diameter of the second portion 5B of the sleeve is greater than the diameter of the superconducting layer 3 (which has a diameter greater than that of the conductive layer 2) so that a space is provided between the inner wall of the second portion 5B the sleeve and the superconducting layers 2, 3. An orifice 5C is pierced in the second portion 5B, of sufficient size to allow pouring through this orifice a powder of a welding material, or to directly cast a molten solder alloy, which will be located between the inner wall of the second portion 5B of the sleeve and the superconducting layers 2, 3. The orifice may for example have an oblong shape.

Le matériau de soudage remplit au moins partiellement l'espace entre la deuxième partie 5B du manchon et les couches supraconductrices 2, 3. Ce matériau est électriquement conducteur et possède avantageusement un point de fusion relativement bas, par exemple inférieur à environ 100°Celsius. Ce peut être par exemple un alliage de composition Sn-Bi-Pb. On évite ainsi d'endommager les couches supraconductrices par un chauffage à température trop élevée, tout en permettant une bonne liaison électrique entre les couches supraconductrices et le manchon 5.The welding material at least partially fills the space between the second portion 5B of the sleeve and the superconducting layers 2, 3. This material is electrically conductive and advantageously has a relatively low melting point, for example less than about 100 ° Celsius. It can be for example an alloy of composition Sn-Bi-Pb. This avoids damaging the superconducting layers by heating at too high a temperature, while allowing a good electrical connection between the superconducting layers and the sleeve 5.

La longueur du manchon est telle qu'il recouvre complètement les parties dénudées 2, 3 des couches supraconductrices, la partie dénudée 1 du support central et l'extrémité de la gaine isolante 4.The length of the sleeve is such that it completely covers the stripped portions 2, 3 of the superconducting layers, the stripped portion 1 of the central support and the end of the insulating sheath 4.

La seconde partie 5B du manchon est prolongée d'une partie d'extrémité 5D de forme externe arrondie, présentant un diamètre externe maximal supérieur à celui du manchon et formant un épaulement radial 5E.The second portion 5B of the sleeve is extended by a rounded outer end portion 5D having a maximum outer diameter greater than that of the sleeve and forming a radial shoulder 5E.

Le manchon 5 comporte sur la paroi externe de sa deuxième partie 5B des moyens de contact électrique, constitués de gorges 5F usinées dans la paroi externe de la deuxième partie 5B du manchon. Ces gorges sont destinées à accueillir des lamelles métalliques de contact ayant une forme annulaire.The sleeve 5 comprises on the outer wall of its second portion 5B electrical contact means, consisting of 5F grooves machined in the outer wall of the second portion 5B of the sleeve. These grooves are intended to accommodate metal contact strips having an annular shape.

L'invention concerne un dispositif de connexion de deux tels câbles supraconducteurs aboutés C, C', et un tel manchon métallique 5, 5' est fixé autour de la partie dénudée de chaque câble supraconducteur, comme illustré sur la figure 4.The invention relates to a device for connecting two such abutting superconducting cables C, C ', and such a metal sleeve 5, 5' is fixed around the stripped portion of each superconducting cable, as shown in figure 4 .

Pour réaliser cette connexion, une fois les lamelles métalliques de contact mises en places dans les gorges correspondants des manchons, un tube conducteur 6 métallique contenant les manchons 5, 5' et connecté à ceux-ci est disposé en butée contre les épaulements 5F, 5'F de la partie d'extrémité 5D, 5'D de chaque manchon. Ce tube est de diamètre interne légèrement supérieur au diamètre externe de la deuxième partie des manchons et de diamètre externe sensiblement égal au diamètre externe maximal de la partie d'extrémité arrondie de chaque manchon. Le tube 6 est connecté mécaniquement sur les manchons 5, 5', par exemple par des vis pointeaux, non représentées.To make this connection, once the metal contact strips are placed in place in the corresponding grooves of the sleeves, a metal conductive tube 6 containing the sleeves 5, 5 'and connected thereto is disposed in abutment against the shoulders 5F, 5 F of the end portion 5D, 5'D of each sleeve. This tube is of internal diameter slightly greater than the outer diameter of the second part of the sleeves and outer diameter substantially equal to the maximum outer diameter of the rounded end portion of each sleeve. The tube 6 is mechanically connected to the sleeves 5, 5 ', for example by needle screws, not shown.

Cette connexion est ensuite isolée par un revêtement externe 7 de matière isolante, avantageusement un enroulement de rubans de papier. Grâce à la forme biseautée 4A de l'extrémité de la gaine externe et à la forme arrondie de la partie d'extrémité 5D, 5'D des manchons, il est possible de réaliser ce revêtement sans aucun espace vide qui serait susceptible d'entraîner des claquages. Une couche semi conductrice par exemple en papier à noir de charbon peut être disposée entre la connexion métallique et le revêtement externe 7.This connection is then isolated by an outer coating 7 of insulating material, preferably a winding of paper ribbons. Due to the beveled shape 4A of the end of the outer sheath and the rounded shape of the end portion 5D, 5'D sleeves, it is possible to achieve this coating without any empty space that could lead to breakdowns. A semiconductor layer, for example made of carbon black paper, can be arranged between the metal connection and the outer coating 7.

Claims (7)

  1. A device for connecting two spliced superconducting cables, each made up of at least one substantially cylindrical resistive conducting central support (1), at least one layer of superconducting material (2, 3) positioned around the support and an insulating sheath (4) surrounding the layer of superconducting material, the end of each cable being stripped to expose the central support and said layer of superconducting material, the device being provided with an outer coating (7) of insulating material and being characterized in that it includes one conductive sleeve (5, 5') per cable, each sleeve being fitted around the stripped part of each of the cables, and a conductive tube (6) containing said two sleeves and connected thereto, in that each said sleeve (5) is extended by an end portion (5D) with a rounded outer shape having a maximum outer diameter larger than that of the sleeve and forming a radial shoulder (5E), said conductive tube (6) abutting against said shoulder (5F) of the end portion of said sleeve.
  2. The device according to the preceding claims, characterized in that said sleeve (5) includes at least one orifice (5C) making it possible to introduce a weld material into the space situated between the layer of superconducting material (2, 3) and the inner wall of the sleeve (5).
  3. The device according to one of the preceding claims, characterized in that said sleeve (5) includes electrical contact means on its outer surface.
  4. The device according to the preceding claims, characterized in that said electrical contact means are made up of annular grooves (5F) maintaining the metal contact strips.
  5. The device according to one of the preceding claims, characterized in that said tube (6) is mechanically connected on said sleeve.
  6. The device according to the preceding claims, characterized in that said tube (6) is connected by screws on said sleeve.
  7. The device according to one of the preceding claims, characterized in that said sleeve (5) and said tube (6) are metallic.
EP09154772.9A 2008-03-26 2009-03-10 Joint structure for connecting two superconducting cables Active EP2105994B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0851948A FR2929454B1 (en) 2008-03-26 2008-03-26 DEVICE FOR CONNECTING TWO SUPERCONDUCTING CABLES

Publications (2)

Publication Number Publication Date
EP2105994A1 EP2105994A1 (en) 2009-09-30
EP2105994B1 true EP2105994B1 (en) 2013-07-31

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EP09154772.9A Active EP2105994B1 (en) 2008-03-26 2009-03-10 Joint structure for connecting two superconducting cables

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US (1) US7999182B2 (en)
EP (1) EP2105994B1 (en)
JP (1) JP5465895B2 (en)
KR (1) KR101506292B1 (en)
CN (1) CN101546872B (en)
DK (1) DK2105994T3 (en)
FR (1) FR2929454B1 (en)

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FR2958807B1 (en) * 2010-04-07 2012-08-10 Nexans DEVICE FOR CONNECTING TWO SUPERCONDUCTING CABLES
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CN104538753B (en) * 2014-12-01 2017-03-29 盛威尔(惠州)电缆科技有限公司 A kind of hyperconductive cable piecing devices
CN104485527A (en) * 2014-12-18 2015-04-01 高雅 Main electrical insulation structure of superconducting cable
CN107104293B (en) * 2017-04-26 2019-07-02 中国科学院合肥物质科学研究院 Two low temperature superconducting cable terminal jointing components and preparation method thereof
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CN110136883B (en) * 2019-06-19 2020-07-14 东部超导科技（苏州）有限公司 Superconducting cable based on YBCO superconducting material and convenient to connect
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Also Published As

Publication number Publication date
KR101506292B1 (en) 2015-03-26
FR2929454A1 (en) 2009-10-02
EP2105994A1 (en) 2009-09-30
CN101546872A (en) 2009-09-30
FR2929454B1 (en) 2012-05-04
JP2009283442A (en) 2009-12-03
US7999182B2 (en) 2011-08-16
DK2105994T3 (en) 2013-09-08
CN101546872B (en) 2014-03-12
JP5465895B2 (en) 2014-04-09
KR20090102655A (en) 2009-09-30
US20100087101A1 (en) 2010-04-08

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