EP0408476A2 - Power-supply cable with internal fluid cooling - Google Patents

Power-supply cable with internal fluid cooling Download PDF

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Publication number
EP0408476A2
EP0408476A2 EP90420327A EP90420327A EP0408476A2 EP 0408476 A2 EP0408476 A2 EP 0408476A2 EP 90420327 A EP90420327 A EP 90420327A EP 90420327 A EP90420327 A EP 90420327A EP 0408476 A2 EP0408476 A2 EP 0408476A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
sleeves
cable
cylindrical
ring
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.)
Withdrawn
Application number
EP90420327A
Other languages
German (de)
French (fr)
Other versions
EP0408476A3 (en
Inventor
Jean Claude Fuchs
Thierry Varillon
Karol Trzecinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erico France SARL
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Erico France SARL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Erico France SARL filed Critical Erico France SARL
Publication of EP0408476A2 publication Critical patent/EP0408476A2/en
Publication of EP0408476A3 publication Critical patent/EP0408476A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/11—Arrangements for conducting current to the electrode terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
    • H01B7/425—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid the construction being bendable

Definitions

  • Installations requiring high currents such as electric, art or induction ovens or magnet coils, are supplied by electrically conductive cables cooled by a fluid, such as water or air.
  • These cables are composed of one or more electrically conductive bundles, distributed in a ring around a tubular core or an axial bundle, and an external, flexible sheath, enveloping the bundles, forming with them, an annular passage for the cooling fluid, a fluid also circulating between the bundles and possibly between the strands of the bundles.
  • the cable ensuring the supply of the electrodes is placed between the articulated gantry and a fixed electrical supply station, forming an open "U" upwards, as shown in Figure 1 attached.
  • the power cable is subjected to bending then twisting stresses, which are exerted on the beams conductors and on the envelope.
  • the external envelope made of flexible and elastically deformable material, twists around its axis, forming helical folds causing, over time, localized wear and formation holes allowing the coolant to leak and leading to the cable being rejected.
  • one of the cable fixing lugs by including to this lug means promoting the pivoting of the sheath relative to it such as a rotary joint eliminating any formation of folds on the sheath during rotational movements of the cable, when the oven is opened and closed.
  • This solution has the drawback of adding a function to the terminal which, in addition to its normal functions of fixing and electrical conduction, already has a function of connecting the sheath to the cooling circuit. In other words, this solution complicates the production of the stock and increases its cost significantly.
  • the object of the present invention is to remedy this by providing an electrical supply cable insensitive to torsional movement which is simple to produce, inexpensive, resistant and reliable.
  • the rotary joint is disposed at a distance from the terminal connecting to the mobile device which must be supplied, but on one of the two parts of the cable which are substantially vertical, when this cable is in the position of use, and in the interval between two sections of sheath, namely a long section, of constant length, and a short section of adjustment to the total length of the cable, this rotary joint being composed of two sleeves tubular each having a part for connection to the section of the sheath, and a reciprocal junction part with, on the one hand, fluid and dust seals, and on the other hand, means of connection in longitudinal translation .
  • the junction part of one of the sleeves of the rotary joint comprises externally and going from its free end in the direction of its connection part to the sheath, a cylindrical sealing surface , a threaded area of larger diameter than the aforementioned bearing and a cylindrical bearing of larger diameter than the threaded area with a circular groove for an O-ring sealing against dust
  • the joining part of the other sleeve comprises , internally and going from its free end towards its connection zone to the sheath, on the one hand, a cylindrical zone capable of cooperating with the aforementioned O-ring, on the other hand, a threaded zone capable of being screwed on that mentioned above by constituting with it means for wedging in translation the two sleeves and means for guiding in rotation, and finally, a cylindrical zone of smaller diameter than the threaded zone and com carrying a groove for a fluid-tight O-ring capable of cooperating with the outer cylindrical face of smaller diameter of the other sleeve.
  • the rotational and translational connections between the two sleeves are provided by the two threads, that is to say by simple means, inexpensive to produce and easy assembly.
  • FIG. 1, 2 designates, in general, the cable according to the invention, comprising at each of its ends, a terminal 3a-3b allowing its fixing.
  • the terminal 3a is connected to the fixed supply station such as a transformer while that 3b is connected to the mobile device which must be supplied with power such as the electrode holder of an oven.
  • this cable is composed of a conductive part 4 constituted by one and preferably several bundles of electrically conductive cables arranged in a ring around another bundle or a tubular core 5.
  • 6 generally designates a flexible tubular sheath, made of rubber or elastomer and delimiting with the conductive part of the cable 4 an annular chamber 7, visible in FIG. 2, serving for the passage of the cooling fluid, such as water or air.
  • the cable is provided with a rotary joint generally designated by 8 which is arranged at a distance from the thimble 3b, and on the part of the cable which is substantially vertical in the position of use, position in which the cable forms a "U", as shown in FIG. 1.
  • This rotary joint is arranged at the junction of two sheath sections, namely a section A said to be long, and a short section B for length adjustment.
  • the section A has a length making it possible to use, without cutting, a sheath 6 of length commonly marketed, while the section B has a length D whose minimum value is defined to give a total length of the cable equal to the shortest length requested for the type of installation concerned.
  • this length D is defined according to the needs of the installation. It should be noted here that the use of two sections, one A of constant length, the other B of variable length, makes it possible to make the best use of the sheaths available on the market but also the numerous falls which, up to present, were not usable and were stored for disposal. In other words, this mode of constitution of the cable avoids the additional costs consecutive to the use of a sheath longer than the needs and the excess of which was not used.
  • This rotary joint can be produced in many ways provided that it comprises two sleeves each comprising means for connecting the ends 6a or 6b of the sheath sections, reciprocal joining means and sealing means.
  • the rotary joint is composed of two sleeves 9 and 10 respectively having on their opposite ends means for connecting the ends 6a-6b of the sheath sections. These means consist of grooves 12 for anchoring the sheath when the latter is tightened by collars 13.
  • the sleeve 10 comprises successively, going from its free end towards its connection zone to the sheath, on the one hand, an external cylindrical surface 14, on the other hand an external threaded zone 15 of larger diameter than the surface 14 and, finally, a cylindrical surface 16 of larger diameter than the threaded zone 15 and provided with a groove for an O-ring 18.
  • the sleeve 9 comprises, going from its free end in the direction of its connection zone to the sheath and successively, an internal cylindrical zone 19, capable of constituting sealing for the seal 18, an internal thread 20 of smaller diameter than the aforementioned zone 19, and an internal cylindrical zone 22 of smaller diameter than the thread, but comprising a groove for a seal 24 capable of coming into contact i on the cylindrical face 14 of the other sleeve.
  • the seal 24 seals the junction device with the water flowing in the cooled cable, while the seal 18 seals against dust.
  • the embodiment shown in FIG. 7 differs from the previous one by the shape of the means of connection in translation between the two sleeves 9 and 10.
  • the sleeve 10 comprises, from its end to its connection zone, a cylindrical seat 14 connected by a shoulder 24 to an external cylindrical zone 16 of larger diameter similar to that of the previous embodiment.
  • the sleeve 9 comprises between the internal bore 22, of smaller diameter and the internal bore 19 of larger diameter, a bore 27, of intermediate diameter, connecting to the bore 22 by an internal circular groove 28 .
  • connection between the two sleeves and provided by a discontinuous circular flange 29 being housed in the groove 28 and projecting externally from fragments of circular crown 30 bonded to the bore 14 of the sleeve 10 during the assembly of the two sleeves 9 and 10.
  • the rotary joint is composed of two identical sleeves, generally designated by 32, and by a common connecting piece 33.
  • Each of the sleeves has a part with grooves 12, allowing its connection with the end 6a or 6b of the sheath, and a bell-shaped part 34 comprising an internal shouldered housing 35.
  • the connecting piece 33 is constituted by a socket in which a groove 36 delimits two shoulders 37 each comprising a circular groove for an external O-ring 39.
  • the sleeves 32 and the sleeve 33 can pivot relatively with respect to each other to remove in the section A of the sheath 6 all torsional stresses, during the rotation of the cable.
  • the sleeves 43 are identical and associated with a common connecting piece 44.
  • Each of the sleeves is provided, opposite its connection end on the sheath, with a shoulder external 45 forming a collar provided with a peripheral groove for an O-ring 47.
  • the connecting piece 44 is constituted by a cylindrical sleeve provided near its ends with circular grooves 48 for positioning stop rings 49.
  • the embodiment shown in Figure 5 is a combination of the embodiments shown in Figures 3 to 4.
  • one of the sleeves is identical to that shown at 32 in Figure 3, that is to say comprises a bell-shaped part 34 with internal shouldered housing 35, into which opens a groove 42 for a stop ring 40.
  • the other sleeve it is identical to that 43 shown in FIG. 4, dire has, in the junction zone, a shoulder 45 with external circular groove for an O-ring 47.
  • the shoulder 45 forming a sort of flange, is mounted to rotate freely in the internal housing 35 of the other sleeve 32 and is wedged in translation in this sleeve by the stop ring 42.
  • the seal provided by the seal 47 is completed by another seal 50 interposed between the faces opposite the two sleeves.
  • each of the sleeves 60 are identical and each comprise a notched external face 62 and a cylindrical and smooth internal face 63.
  • One end of each sleeve is provided with a straight end face 64, while the the other end is internally chamfered at 65.
  • each of the sleeves 62 is provided with an internal groove for an O-ring 66.
  • these two sleeves are wedged in translation, by a common junction piece constituted by a cylindrical sleeve 67 on which they are arranged. The ends 66a of this socket are folded back against their chamfers 65.
  • the water tightness is ensured by the seals 66, while the dust tightness is ensured by elastic ring 65 which extends below the ends of the sheaths 6a and 6b and which is compressed between the end faces 64 of the sleeves.
  • this rotary joint performs well the function assigned to it by using inexpensive parts to produce, easy to assemble and by forming a thin structure. not disturbing the circulation of the cooling fluid which can be water, as described above, but which can also be air.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Joints Allowing Movement (AREA)
  • Cable Accessories (AREA)

Abstract

This cable is of the type comprising a jacket (6a-6b), made from flexible and deformable material, surrounding at least one electricity-conducting bundle (4) while providing around this bundle an annular channel (7) for the fluid to circulate, connection terminals fixed to the ends of the conductive portion and a rotating seal enabling the jacket to rotate with respect to one of the terminals. According to the invention, this rotating seal (8) is disposed, away from one of the terminals, on one of the two portions of the cable which are substantially vertical when this cable is in a service position and in the gap between two jacket sections, namely a long section, of constant length, and a short section for adjusting the total length of the cable, this rotating seal (8) being composed of two tubular sleeves (9-10) each having a portion (12) for the connection to one of the ends (6a-6b) of a jacket section and a mutual junction portion together with, on the one hand, fluid-tight (24) and dust-tight (18) seals and, on the other hand, linkage means (15-20) for longitudinal translational movement. <IMAGE>

Description

Les installations exigeant des courants de forte intensité, telles que les fours électriques, à art ou à induction ou les bobines d'aimants, sont alimentées par des câbles conducteurs de l'électricité refroidis par un fluide, tel que l'eau ou l'air.Installations requiring high currents, such as electric, art or induction ovens or magnet coils, are supplied by electrically conductive cables cooled by a fluid, such as water or air.

Ces câbles sont composés d'un ou de plusieurs faisceaux conducteurs de l'électricité, répartis en couronne autour d'une âme tubulaire ou d'un faisceau axial, et d'une gaine extérieure, souple, enveloppant les faisceaux en formant avec eux, un couloir annulaire pour le fluide de refroidissement, fluide circulant également entre les faisceaux et éventuellement entre les torons des faisceaux.These cables are composed of one or more electrically conductive bundles, distributed in a ring around a tubular core or an axial bundle, and an external, flexible sheath, enveloping the bundles, forming with them, an annular passage for the cooling fluid, a fluid also circulating between the bundles and possibly between the strands of the bundles.

Dans les fours électriques comportant un portique porte-électrodes articulé autour d'un axe vertical et mobile verticalement, le câble assurant l'alimentation des électrodes est disposé entre le portique articulé et un poste fixe d'alimentation électrique en formant un "U" ouvert vers le haut, comme montré sur la figure 1 annexée. A l'ouverture du four, lors des mouvements du portique, d'abord verticaux puis ensuite rotatifs autour de l'axe vertical, le câble d'alimentation est soumis à des contraintes de flexion puis de torsion, qui s'exercent sur les faisceaux conducteurs et sur l'enveloppe. Si les faisceaux conducteurs, réalisésen cuivre, supportent sans dommages ces contraintes, l'enveloppe externe, réalisée en matériau souple et déformable élastiquement, se vrille autour de son axe en formant des plis hélicoïdaux provoquant,dans le temps, une usure localisée et la formation de trous laissant fuir le fluide de refroidissement et conduisant au rebut du câble.In electric ovens comprising an electrode-holder gantry articulated around a vertical axis and vertically movable, the cable ensuring the supply of the electrodes is placed between the articulated gantry and a fixed electrical supply station, forming an open "U" upwards, as shown in Figure 1 attached. At the opening of the oven, during the movements of the gantry, first vertical then rotary around the vertical axis, the power cable is subjected to bending then twisting stresses, which are exerted on the beams conductors and on the envelope. If the conductive bundles, made of copper, withstand these constraints without damage, the external envelope, made of flexible and elastically deformable material, twists around its axis, forming helical folds causing, over time, localized wear and formation holes allowing the coolant to leak and leading to the cable being rejected.

Pour remédier à cela, il a été envisagé d'aménager l'une des cosses de fixation du câble en incluant à cette cosse des moyens favorisant le pivotement de la gaine par rapport à elle tel qu'un joint tournant supprimant toute formation de plis sur la gaine lors des mouvements de rotation du câble, à l'ouverture et à la fermeture du four. Cette solutation présente l'inconvénient de rajouter une fonction à la cosse qui, outre ses fonctions normales de fixation et de conduction électrique, possède déjà une fonction de raccordement de la gaine au circuit de refroidissement. En d'autres termes, cette solution complique la réalisation de la crosse et augmente son coût de manière sensible.To remedy this, it has been envisaged to arrange one of the cable fixing lugs by including to this lug means promoting the pivoting of the sheath relative to it such as a rotary joint eliminating any formation of folds on the sheath during rotational movements of the cable, when the oven is opened and closed. This solution has the drawback of adding a function to the terminal which, in addition to its normal functions of fixing and electrical conduction, already has a function of connecting the sheath to the cooling circuit. In other words, this solution complicates the production of the stock and increases its cost significantly.

La présente invention a pour but de remédier à cela en fournissant un câble d'alimentation électrique insensible au mouvement de torsion qui soit simple à réaliser, peu onéreux, résistant et fiable.The object of the present invention is to remedy this by providing an electrical supply cable insensitive to torsional movement which is simple to produce, inexpensive, resistant and reliable.

A cet effet, dans le câble selon l'invention, le joint tournant est disposé à distance de la cosse se raccordant au dispositif mobile qu'il faut alimenter mais sur l'une des deux parties du câble qui sont sensiblement verticales, lorsque ce câble est en position d'utilisation, et dans l'intervalle entre deux tronçons de gaine, à savoir un tronçon long, de longueur constante, et un tronçon court d'ajustement à la longueur totale du câble, ce joint tournant étant composé de deux manchons tubulaires présentant chacun une partie pour le raccordement au tronçon de la gaine, et une partie de jonction réciproque avec, d'une part, joints d'étanchéité du fluide et à la poussière, et d'autre part, moyens de liaison en translation longitudinale.To this end, in the cable according to the invention, the rotary joint is disposed at a distance from the terminal connecting to the mobile device which must be supplied, but on one of the two parts of the cable which are substantially vertical, when this cable is in the position of use, and in the interval between two sections of sheath, namely a long section, of constant length, and a short section of adjustment to the total length of the cable, this rotary joint being composed of two sleeves tubular each having a part for connection to the section of the sheath, and a reciprocal junction part with, on the one hand, fluid and dust seals, and on the other hand, means of connection in longitudinal translation .

Grâce à cet agencement, il ne s'ajoute aucune fonction supplémentaire aux nombreuses fonctions de la cosse et la fonction joint tournant est disposée dans une zone où elle travaille dans les meilleures conditions. A ces avantages, il faut ajouter celui procuré par le recours à un tronçon long de longueur standard et à un tronçon court permettant d'adapter aux besoins la longueur totale de la gaine.Cette disposition permet de réaliser le tronçon long en utilisant au mieux les longueurs commercialisées pour les gaines, ce qui simplifie l'approvisionnement, et de réaliser le tronçon court en récupérant des chutes de gaine, c'est à dire des fragments de gaine qui, jusqu'alors, sectionnés dans les longueurs de gaine commercialisée et fournies plus longues que les besoins, étaient inutilisés et rebutés bien qu'inclus dans le coût final.Thanks to this arrangement, there is no additional function added to the many functions of the terminal and the rotating joint function is arranged in an area where it works in the best conditions. To these advantages must be added that provided by the use of a long section of standard length and a short section allowing the total length of the sheath to be adapted to requirements. This arrangement enables the long section to be made using the best possible lengths marketed for the sheaths, which simplifies supply, and making the short section by recovering sheath falls, that is to say fragments of sheath which, until then, sectioned in the lengths of sheath marketed and supplied longer than necessary, were unused and discarded although included in the final cost.

De plus, la suppression de toute torsion dans la gaine augmente la longévité du câble et permet de réduire l'épaisseur de cette gaine, donc de réduire encore son coût de fabrication.In addition, the elimination of any twist in the sheath increases the longevity of the cable and makes it possible to reduce the thickness of this sheath, therefore further reducing its manufacturing cost.

Enfin, en raison de sa structure simple et peu onéreuse, un tel joint tournant peut être mis en place à la fabrication du câble ou, ultérieurement, lors d'une opération de remise en état après utilisation.Finally, because of its simple and inexpensive structure, such a rotating joint can be used in the manufacture of the cable. or, later, during a repair operation after use.

Dans une forme d'exécution de l'invention, la partie de jonction de l'un des manchons du joint tournant comprend extérieurement et en allant de son extrémité libre en direction de sa partie de raccordement à la gaine, une portée cylindrique d'étanchéité, une zone filetée de plus grand diamètre que la portée précitée et une portée cylindrique de plus grand diamètre que la zone filetée avec une gorge circulaire pour un joint torique d'étanchéité aux poussières, tandis que la partie de jonction de l'autre manchon comprend, intérieurement et en allant de son extrémité libre en direction de sa zone de raccordement à la gaine, d'une part, une zone cylindrique apte à coopérer avec le joint torique précité, d'autre part, une zone filetée apte à se visser sur celle précitée en constituant avec elle moyens de calage en translation des deux manchons et moyens de guidage en rotation, et enfin, une zone cylindrique de plus petit diamètre que la zone filetée et comportant une gorge pour un joint torique d'étanchéité au fluide apte à coopérer avec la face cylindrique externe de plus petit diamètre de l'autre manchon.In one embodiment of the invention, the junction part of one of the sleeves of the rotary joint comprises externally and going from its free end in the direction of its connection part to the sheath, a cylindrical sealing surface , a threaded area of larger diameter than the aforementioned bearing and a cylindrical bearing of larger diameter than the threaded area with a circular groove for an O-ring sealing against dust, while the joining part of the other sleeve comprises , internally and going from its free end towards its connection zone to the sheath, on the one hand, a cylindrical zone capable of cooperating with the aforementioned O-ring, on the other hand, a threaded zone capable of being screwed on that mentioned above by constituting with it means for wedging in translation the two sleeves and means for guiding in rotation, and finally, a cylindrical zone of smaller diameter than the threaded zone and com carrying a groove for a fluid-tight O-ring capable of cooperating with the outer cylindrical face of smaller diameter of the other sleeve.

Dans cette forme d'exécution, les liaisons en rotation et en translation entre les deux manchons sont assurées par les deux filetages, c'est à dire par des moyens simples, peu onéreux à réaliser et d'assemblage aisé.In this embodiment, the rotational and translational connections between the two sleeves are provided by the two threads, that is to say by simple means, inexpensive to produce and easy assembly.

D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé, représentant à titre d'exemples plusieurs formes d'exécution du câble selon l'invention.

  • Figure 1 est une vue de côté en élévation montrant les différentes éléments du câble,
  • Figure 2 est une vue de côté avec coupe transversale partielle montrant, à échelle agrandie, une première forme d'exécution du joint tournant,
  • Figures 3, 4, 5 sont des vues partielles de côté montrant en coupe transversale, et à échelle agrandie, trois autres formes d'exécution de ce joint tournant,
  • Figure 6 est une vue de côté en coupe transversale montrant une autre forme d'exécution du joint tournant,
  • Figure 7 est une vue partielle de côté en coupe transversale montrant une variante de réalisation du joint tournant représenté à la figure 2.
Other characteristics and advantages will emerge from the description which follows with reference to the appended schematic drawing, representing by way of example several embodiments of the cable according to the invention.
  • FIG. 1 is a side elevation view showing the various elements of the cable,
  • FIG. 2 is a side view with partial cross section showing, on an enlarged scale, a first embodiment of the rotary joint,
  • Figures 3, 4, 5 are partial side views showing in cross section, and on an enlarged scale, three other embodiments of this rotary joint,
  • FIG. 6 is a side view in cross section showing another embodiment of the rotary joint,
  • FIG. 7 is a partial side view in cross section showing an alternative embodiment of the rotary joint shown in FIG. 2.

A la figure 1, 2 désigne, de manière générale, le câble selon l'invention, comportant à chacune de ses extrémités, une cosse 3a-3b permettant sa fixation. La cosse 3a est raccordée au poste d'alimentation fixe tel qu'on transformateur tandis que celle 3b est raccordée au dispositif mobile dont il faut assurer l'alimentation tel que le porte-électrodes d'un four.In FIG. 1, 2 designates, in general, the cable according to the invention, comprising at each of its ends, a terminal 3a-3b allowing its fixing. The terminal 3a is connected to the fixed supply station such as a transformer while that 3b is connected to the mobile device which must be supplied with power such as the electrode holder of an oven.

Comme le montre la figure 2, ce câble est composé d'une partie conductrice 4 constituée par un et de préférence plusieurs faisceaux de câbles conducteurs de l'électricité disposés en couronne autour d'un autre faisceau ou d'une âme tubulaire 5. 6 désigne de manière générale une gaine tubulaire souple, réalisée en caoutchouc ou élastomère et délimitant avec la partie conductrice du câble 4 une chambre annulaire 7, visible figure 2, servant au passage du fluide de refroidissement, tel que de l'eau ou de l'air.As shown in FIG. 2, this cable is composed of a conductive part 4 constituted by one and preferably several bundles of electrically conductive cables arranged in a ring around another bundle or a tubular core 5. 6 generally designates a flexible tubular sheath, made of rubber or elastomer and delimiting with the conductive part of the cable 4 an annular chamber 7, visible in FIG. 2, serving for the passage of the cooling fluid, such as water or air.

Selon l'invention, le câble est muni d'un joint tournant désigné de façon générale par 8 qui est disposé à distance de la cossecelle 3b, et sur la partie du câble qui est sensiblement verticale en position d'utilisation, position dans laquelle le câble forme un "U", comme montré à la figure 1. Ce joint tournant est disposé à la jonction de deux tronçons de gaine à savoir un tronçon A dit long, et un tronçon court B d'ajustement en longueur. Le tronçon A a une longueur permettant d'utiliser, sans découpage, une gaine 6 de longueur couramment commercialisée, tandis que le tronçon B a une longueur D dont la valeur minimale est définie pour donner une longueur totale au câble égale à la plus petite longueur demandée pour le type d'installation concernée. En pratique, la valeur réelle de cette longueur D est définie en fonction des besoins de l'installation. Il faut ici noter que le recours a deux tronçons, l'un A de longueur constante, l'autre B de longueur variable, permet d'utiliser au mieux, les gaines disponibles sur le marché mais aussi les nombreuses chutes qui, jusqu'à présent, n'étaient pas utilisables et étaient stockées au mises au rebut. En d'autres termes, ce mode de constitution du câble évite les surcoûts consécutifs à l'utilisation de gaine plus longue que les besoins et dont l'excédent n'était pas utilisé.According to the invention, the cable is provided with a rotary joint generally designated by 8 which is arranged at a distance from the thimble 3b, and on the part of the cable which is substantially vertical in the position of use, position in which the cable forms a "U", as shown in FIG. 1. This rotary joint is arranged at the junction of two sheath sections, namely a section A said to be long, and a short section B for length adjustment. The section A has a length making it possible to use, without cutting, a sheath 6 of length commonly marketed, while the section B has a length D whose minimum value is defined to give a total length of the cable equal to the shortest length requested for the type of installation concerned. In practice, the real value of this length D is defined according to the needs of the installation. It should be noted here that the use of two sections, one A of constant length, the other B of variable length, makes it possible to make the best use of the sheaths available on the market but also the numerous falls which, up to present, were not usable and were stored for disposal. In other words, this mode of constitution of the cable avoids the additional costs consecutive to the use of a sheath longer than the needs and the excess of which was not used.

Un autre avantage de ce montage provient du fait que le joint tournant 8 est totalement indépendant de la cosse et ne complique pas les nombreuses fonctions que doit remplir cette cosse. En outre, de par sa disposition, il permet à la gaine du tronçon B de pivoter par rapport à la gaine du tronçon A et d'éviter ainsi que cette dernière soit soumise à un mouvement de torsion formant des plis hélicoïdaux générateurs de frottement, d'usure et de perforations.Another advantage of this arrangement comes from the fact that the rotary joint 8 is completely independent of the terminal and does not complicate the numerous functions which this terminal must fulfill. In addition, by its arrangement, it allows the sheath of the section B to pivot relative to the sheath of the section A and thus avoid that the latter is subjected to a torsional movement forming helical folds generating friction, d wear and punctures.

Ce joint tournant peut être réalisé de nombreuses façons pourvu qu'il comprenne deux manchons comprenant chacun des moyens de raccordement aux extrémités 6a ou 6b des tronçons de gaine, des moyens de jonction réciproques et des moyens d'étanchéité.This rotary joint can be produced in many ways provided that it comprises two sleeves each comprising means for connecting the ends 6a or 6b of the sheath sections, reciprocal joining means and sealing means.

Dans la forme d'exécution représentée à la figure 2, le joint tournant est composé de deux manchons respectivement 9 et 10 comportant sur leurs extrémités opposées des moyens de raccordement aux extrémités 6a-6b des tronçons de gaine. Ces moyens sont constitués par des gorges 12 d'ancrage de la gaine lorsque celle-ci est serrée par des colliers 13. Dans sa partie de jonction, le manchon 10 comporte successivement, en allant de son extrémité libre en direction de sa zone de raccordement à la gaine, d'une part, une portée cylindrique externe 14, d'autre part une zone filetée externe 15 de plus grand diamètre que la portée 14 et, enfin, une portée cylindrique 16 de plus grand diamètre que la zone filetée 15 et munie d'une gorge pour un joint torique 18. Quant au manchon 9, il comporte,en allant de son extrémité libre en direction de sa zone de raccordement à la gaine et successivement, une zone cylindrique interne 19, apte à constituer portée d'étanchéité pour le joint 18, un filetage interne 20 de plus petit diamètre que la zone 19 précitée, et une zone cylindrique interne 22 de plus petit diamètre que le filetage, mais comportant une gorge pour un joint d'étahchéité 24 apte à venir en appui sur la face cylindrique 14 de l'autre manchon. Lorsque les deux manchons sont vissés l'un dans l'autre et que les tronçons de gaine 6a et 6b ont été raccordés sur eux, leur liaison en translation de même que leur guidage en rotation sont assurés par les filetages 15-20.In the embodiment shown in Figure 2, the rotary joint is composed of two sleeves 9 and 10 respectively having on their opposite ends means for connecting the ends 6a-6b of the sheath sections. These means consist of grooves 12 for anchoring the sheath when the latter is tightened by collars 13. In its junction part, the sleeve 10 comprises successively, going from its free end towards its connection zone to the sheath, on the one hand, an external cylindrical surface 14, on the other hand an external threaded zone 15 of larger diameter than the surface 14 and, finally, a cylindrical surface 16 of larger diameter than the threaded zone 15 and provided with a groove for an O-ring 18. As for the sleeve 9, it comprises, going from its free end in the direction of its connection zone to the sheath and successively, an internal cylindrical zone 19, capable of constituting sealing for the seal 18, an internal thread 20 of smaller diameter than the aforementioned zone 19, and an internal cylindrical zone 22 of smaller diameter than the thread, but comprising a groove for a seal 24 capable of coming into contact i on the cylindrical face 14 of the other sleeve. When the two sleeves are screwed into one another and the sheath sections 6a and 6b have been connected to them, their connection in translation as well as their rotation guidance is provided by threads 15-20.

Un tel joint tournant est très facile à réaliser et donc peu coûteux et procure des résultats faibles dans le temps. Le joint 24 assure l'étanchéité du dispositif de jonction à l'eau circulant dans le câble refroidi, tandis que le joint 18 assure l'étanchéité aux poussières.Such a rotary joint is very easy to produce and therefore inexpensive and provides poor results over time. The seal 24 seals the junction device with the water flowing in the cooled cable, while the seal 18 seals against dust.

La forme d'exécution représentée à la figure 7 se différencie de la précédente par la forme des moyens de liaison en translation entre les deux manchons 9 et 10. Le manchon 10 comporte, de son extrémité à sa zone de raccordement, une portée cylindrique 14 se raccordant par un épaulement 24 à une zone cylindrique externe 16 de plus grand diamètre similaire à celle de la forme d'exécution précédente. Quant au manchon 9, il comporte entre l'alésage interne 22, de plus petit diamètre et l'alésage interne 19 de plus grand diamètre, un alésage 27, de diamètre intermédiaire, se raccordant à l'alésage 22 par une gorge circulaire interne 28.The embodiment shown in FIG. 7 differs from the previous one by the shape of the means of connection in translation between the two sleeves 9 and 10. The sleeve 10 comprises, from its end to its connection zone, a cylindrical seat 14 connected by a shoulder 24 to an external cylindrical zone 16 of larger diameter similar to that of the previous embodiment. As for the sleeve 9, it comprises between the internal bore 22, of smaller diameter and the internal bore 19 of larger diameter, a bore 27, of intermediate diameter, connecting to the bore 22 by an internal circular groove 28 .

La liaison entre les deux manchons et assurée par une collerette circulaire discontinue 29 se logeant dans la gorge 28 et saillant extérieurement de fragments de couronne circulaire 30 collés sur l'alésage 14 du manchon 10 lors de l'assemblage des deux manchons 9 et 10.The connection between the two sleeves and provided by a discontinuous circular flange 29 being housed in the groove 28 and projecting externally from fragments of circular crown 30 bonded to the bore 14 of the sleeve 10 during the assembly of the two sleeves 9 and 10.

Dans la forme d'exécution représentée à la figure 3, le joint tournant est composé de deux manchons identiques, désignés de façon générale par 32, et par une pièce de liaison commune 33. Chacun des manchons comporte une partie avec des gorges 12, permettant son raccordement avec l'extrémité 6a ou 6b de la gaine, et une partie en forme de cloche 34 comportant un logement interne épaulé 35. La pièce de liaison 33 est constituée par une douille dans laquelle une gorge 36 délimite deux épaulements 37 comportant chacun une gorge circulaire pour un joint torique externe 39.In the embodiment shown in Figure 3, the rotary joint is composed of two identical sleeves, generally designated by 32, and by a common connecting piece 33. Each of the sleeves has a part with grooves 12, allowing its connection with the end 6a or 6b of the sheath, and a bell-shaped part 34 comprising an internal shouldered housing 35. The connecting piece 33 is constituted by a socket in which a groove 36 delimits two shoulders 37 each comprising a circular groove for an external O-ring 39.

Lors du montage, lorsque les parties en forme de cloche 34 de chacun des manchons 32 coiffe les épaulements 37 de la douille 33, la liaison en translation des manchons 32 et de la douille 33 est assurée par engagement de joncs d'arrêt 40 dans des gorges circulaires internes 42 débouchant des logements 35. Comme le montre la figure 3, les joncs d'arrêt 40, disposés dans la gorge 36, viennent en contact avec les faces en vis à vis des épaulements 37 de manière à assurer une liaison avec un jeu axial minimum. Les deux joints 39 assurent l'un et l'autre l'étanchéité à l'eau vers l'extérieur et l'étanchéité aux poussières vers l'intérieur.During assembly, when the bell-shaped portions 34 of each of the sleeves 32 cover the shoulders 37 of the sleeve 33, the translation connection of the sleeves 32 and of the sleeve 33 is ensured by engagement of stop rings 40 in internal circular grooves 42 emerging from the housings 35. As shown in FIG. 3, the stop rings 40, arranged in the groove 36, come into contact with the facing faces of the shoulders 37 so as to ensure a connection with minimum axial play. The two seals 39 both provide watertightness towards the outside and dustproofness towards the inside.

Avec ce dispositif, les manchons 32 et la douille 33 peuvent pivoter relativement les uns par rapport aux autres pour supprimer dans le tronçon A de la gaine 6 toutes contraintes de torsion, lors de la rotation du câble.With this device, the sleeves 32 and the sleeve 33 can pivot relatively with respect to each other to remove in the section A of the sheath 6 all torsional stresses, during the rotation of the cable.

Dans la forme d'exécution représentée à la figure 4, les manchons 43 sont identiques et associés à une pièce de liaison commune 44. Chacun des manchons est muni, à l'opposé de son extrémité de raccordement sur la gaine, d'un épaulement externe 45 formant une collerette munie d'une gorge périphérique pour un joint torique 47. La pièce de liaison 44 est constituée par une douille cylindrique munie à proximité de ses extrémités de gorges circulaires 48 pour positionnement de joncs d'arrêt 49.In the embodiment shown in Figure 4, the sleeves 43 are identical and associated with a common connecting piece 44. Each of the sleeves is provided, opposite its connection end on the sheath, with a shoulder external 45 forming a collar provided with a peripheral groove for an O-ring 47. The connecting piece 44 is constituted by a cylindrical sleeve provided near its ends with circular grooves 48 for positioning stop rings 49.

Lorsque les deux épaulements 45 sont disposés bout à bout, c'est à dire en contact de frottement par la face en bout, leur liaison en translation est assurée par les joncs d'arrêt 49 engagés dans les gorges 48 de la bague extérieure 44. Il est évident que l'intervalle entre les deux joncs d'arrêt 49 est légèrement supérieur à la longueur totale des épaulements 45 afin de ménager un jeu fonctionnel, axial, permettant le libre mouvement des deux manchons l'un par rapport à l'autre. Là encore, l'étanchéité aux poussières et à l'eau est assurée par chacun des joints toriques 47.When the two shoulders 45 are arranged end to end, that is to say in frictional contact by the end face, their connection in translation is ensured by the stop rings 49 engaged in the grooves 48 of the outer ring 44. It is obvious that the interval between the two stop rings 49 is slightly greater than the total length of the shoulders 45 in order to provide a functional, axial play, allowing the free movement of the two sleeves relative to each other. . Again, the dust and water tightness is ensured by each of the O-rings 47.

La forme d'exécution représentée à la figure 5 est une combinsaison des formes d'exécution représentées aux figures 3 à 4. Ainsi, l'un des manchons est identique à celui représenté en 32 à la figure 3, c'est à dire comporte une partie en forme de cloche 34 avec logement interne épaulé 35, dans lequel débouche une gorge 42 pour un jonc d'arrêt 40. Quant à l'autre manchon, il est identique à celui 43 représenté à la figure 4, c'est à dire comporte, dans la zone de jonction, un épaulement 45 avec gorge circulaire externe pour un joint torique 47. A l'état monté, l'épaulement 45, formant une sorte de collerette, est monté libre en rotation dans le logement interne 35 de l'autre manchon 32 et est calé en translation dans ce manchon par le jonc d'arrêt 42. L'étanchéité assurée par le joint 47 est complétée par un autre joint 50 interposé entre les faces en vis à vis des deux manchons.The embodiment shown in Figure 5 is a combination of the embodiments shown in Figures 3 to 4. Thus, one of the sleeves is identical to that shown at 32 in Figure 3, that is to say comprises a bell-shaped part 34 with internal shouldered housing 35, into which opens a groove 42 for a stop ring 40. As for the other sleeve, it is identical to that 43 shown in FIG. 4, dire has, in the junction zone, a shoulder 45 with external circular groove for an O-ring 47. In the assembled state, the shoulder 45, forming a sort of flange, is mounted to rotate freely in the internal housing 35 of the other sleeve 32 and is wedged in translation in this sleeve by the stop ring 42. The seal provided by the seal 47 is completed by another seal 50 interposed between the faces opposite the two sleeves.

A la figure 6, les deux manchons 60 sont identiques et comportent chacun une face externe crantée 62 et une face interne cylindrique et lisse 63. L'une des extrémités de chaque manchon est munie d'une face en bout droite 64, tandis que l'autre extrémité est chanfreinée intérieurement en 65. Enfin, à proximité de l'extrémité chanfreinée, chacun des manchons 62 est muni d'une gorge interne pour un joint torique 66. Comme le montre bien la figure 6, ces deux manchons sont calés en translation, par une pièce de jonction commune constituée par une douille cylindrique 67 sur laquelle ils sont disposés. Les extrémités 66a de cette douille sont rabattues contre leurs chanfreins 65.In FIG. 6, the two sleeves 60 are identical and each comprise a notched external face 62 and a cylindrical and smooth internal face 63. One end of each sleeve is provided with a straight end face 64, while the the other end is internally chamfered at 65. Finally, near the chamfered end, each of the sleeves 62 is provided with an internal groove for an O-ring 66. As shown in FIG. 6, these two sleeves are wedged in translation, by a common junction piece constituted by a cylindrical sleeve 67 on which they are arranged. The ends 66a of this socket are folded back against their chamfers 65.

Dans ce dispositif, l'étanchéité à l'eau est assurée par les joints 66, tandis que l'étanchéité aux poussières est assurée par bague élastique 65 qui s'étend au dessous des extrémités des gaines 6a et 6b et qui est comprimée entre les faces en bout 64 des manchons.In this device, the water tightness is ensured by the seals 66, while the dust tightness is ensured by elastic ring 65 which extends below the ends of the sheaths 6a and 6b and which is compressed between the end faces 64 of the sleeves.

Il ressort de ce qui précède que, quelle que soit sa forme d'exécution, ce joint tournant assure bien la fonction qui lui est dévolue en mettant en oeuvre des pièces peu onéreuses à réaliser, de montage facile et en formant une structure peu épaisse ne perturbant pas la circulation du fluide de refroidissement qui peut être de l'eau, comme décrit ci dessus, mais qui peut également être de l'air.It emerges from the above that, whatever its embodiment, this rotary joint performs well the function assigned to it by using inexpensive parts to produce, easy to assemble and by forming a thin structure. not disturbing the circulation of the cooling fluid which can be water, as described above, but which can also be air.

Claims (8)

1. Câble d'alimentation électrique à refroidissement par fluide interne, du type comprenant une gaine 6 en matériau souple et déformable enveloppant au moins un faisceau 4 conducteur de l'électricité, en ménageant autour de ce faisceau un canal annulaire 7 pour la circulation du fluide, des cosses de raccordement 3a-3b fixées aux extrémités de la partie conductrice et un joint tournant permettant la rotation de la gaine par rapport à l'une des cosses, caractérisé en ce que ce joint tournant 8 est disposé à distance de la cosse 3b se raccordant au dispositif qu'il faut alimenter, mais surl'une des deux parties du câble qui sont sensiblement verticales lorsque ce câble est en position d'utilisation et dans l'intervalle entre deux tronçons de gaine, à savoir un tronçon long A, de longueur constante, et un tronçon court B d'ajustement à la longueur totale du câble, ce joint tournant 8 étant composé de deux manchons tubulaires 9-10-32-43-60 présentant chacun une partie 12 pour le raccordement à l'une des extrémités 6a-6b d'un tronçon de gaine et une partie de jonction réciproque avec, d'une part, joint d'étanchéité au fluide et à la poussière et d'autre part, des moyens 15-20 de liaison en translation longitudinale.1. Electric power cable with internal fluid cooling, of the type comprising a sheath 6 of flexible and deformable material enveloping at least one bundle 4 conducting electricity, by providing around this bundle an annular channel 7 for the circulation of the fluid, connection lugs 3a-3b fixed to the ends of the conductive part and a rotary joint allowing the rotation of the sheath relative to one of the lugs, characterized in that this rotary joint 8 is disposed at a distance from the terminal 3b connecting to the device to be supplied, but on one of the two parts of the cable which are substantially vertical when this cable is in the position of use and in the interval between two sections of sheath, namely a long section A , of constant length, and a short section B of adjustment to the total length of the cable, this rotating joint 8 being composed of two tubular sleeves 9-10-32-43-60 each having a p part 12 for connection to one end 6a-6b of a section of sheath and a reciprocal junction part with, on the one hand, fluid and dust seal and on the other hand, means 15-20 for connecting in longitudinal translation. 2. Câble d'alimentation selon la revendication 1, caractérisé en ce que la partie de jonction de l'un 10 des manchons du joint tournant comprend extérieurement et en allant de son extrémité libre en direction de sa partie de raccordement du tronçon 6b de gaine, une portée cylindrique d'étanchéité 14, une zone filetée 15 de plus grand diamètre que la portée 14 précitée, et une portée cylindrique 16 de plus grand diamètre que la zone filetée, avec une gorge circulaire pour un joint torique 18 d'étanchéité aux poussières, tandis que la partie de jonction de l'autre manchon 9 comprend, intérieurement et en allant de son extrémité libre en direction de sa partie de raccordement, une zone cylindrique 19 apte à coopérer avec le joint torique 18, une zone filetée 20 apte à se visser sur celle 15 précitée en constituant, avec elle, moyens de liaison en translation des deux manchons 9 et 10 et, enfin, une zone cylindrique 22, de plus petit diamètre que la zone filetée et comportant une gorge pour un joint torique 24, d'étanchéité au fluide,apte à coopérer avec la face cylindrique externe 14 de l'autre manchon.2. Power cable according to claim 1, characterized in that the junction part of one of the sleeves of the rotary joint comprises externally and going from its free end towards its connection part of the section of sheath 6b , a cylindrical sealing surface 14, a threaded zone 15 of larger diameter than the abovementioned surface 14, and a cylindrical surface 16 of larger diameter than the threaded zone, with a circular groove for an O-ring 18 sealing against dust, while the junction part of the other sleeve 9 comprises, internally and going from its free end towards its connection part, a cylindrical zone 19 capable of cooperating with the O-ring 18, a threaded zone 20 suitable to be screwed on the aforementioned 15 by constituting, with it, means for translational connection of the two sleeves 9 and 10 and, finally, a cylindrical zone 22, of smaller diameter than the zone fi lined and comprising a groove for an O-ring 24, fluid-tight, capable of cooperating with the external cylindrical face 14 of the other sleeve. 3. Câble selon l'ensemble des revendications 1 et 2, caractérisé en ce que la liaison en translation entre les deux manchons 9 et 10 est assurée par encliquetage d'une gorge 28,débouchant d'une face cylindrique 27 intermédaire entre les faces 19-22 de l'un 9 des manchons, sur une collerette 29 saillant de la face en vis à vis 14 de l'autre manchon 10.3. Cable according to all of claims 1 and 2, characterized in that the connection in translation between the two sleeves 9 and 10 is ensured by snap-fastening of a groove 28, emerging from a cylindrical face 27 intermediate between the faces 19 -22 of one 9 of the sleeves, on a flange 29 projecting from the opposite face 14 of the other sleeve 10. 4. Câble selon la revendication 3, caractérisé en ce que la collerette 29 est discontinue et est formée sur des segments de couronnes 30 collés, au montage, sur la face cylindrique externe 14 du manchon 10 correspondant.4. Cable according to claim 3, characterized in that the collar 29 is discontinuous and is formed on crown segments 30 bonded, during assembly, on the external cylindrical face 14 of the corresponding sleeve 10. 5. Câble selon la revendication 1, caractérisé en ce que la partie de jonction de chacun des manchons 32 est en forme de cloche 34 et comporte un logement interne épaulé 35, de réception de l'une des extrémités épaulées 37 d'une douille 33, tandis que, d'une part, ladite douille 33 est munie, à chacune de ses extrémités épaulées,d'une gorge externe périphérique pour un joint torique 39 d'étanchéité, et que d'autre part, la liaison de chaque extrémité de douille avec la partie en forme de cloche 34 du manchon 32 correspondant est assurée par un jonc élastique 40, engagé partiellement dans une gorge circulaire 42 du logement épaulé 35 et saillant contre l'épaulement de la douille 33.5. Cable according to claim 1, characterized in that the junction part of each of the sleeves 32 is in the shape of a bell 34 and has an internal shouldered housing 35, for receiving one of the shouldered ends 37 of a socket 33 , while, on the one hand, said sleeve 33 is provided, at each of its shoulder ends, with a peripheral external groove for an O-ring seal 39, and on the other hand, the connection of each end of sleeve with the bell-shaped part 34 of the corresponding sleeve 32 is provided by an elastic ring 40, partially engaged in a circular groove 42 of the shouldered housing 35 and projecting against the shoulder of the sleeve 33. 6. Câble selon la revendication 1, caractérisé en ce que la partie de jonction de chacun des manchons 43 est constituée par un épaulement externe 45 qui, avec gorge circulaire externe pour joint torique d'étanchéité 47, est engagé dans une douille cylindrique externe 44, douille comportant, à chacune des extrémités de son alésage interne, une gorge 48 pour un jonc d'arrêt 49 coopérant avec la face arrière de l'épaulement du manchon 43 correspondant, lorsque les deux manchons 43 sont en contact de glissement bout à bout.6. Cable according to claim 1, characterized in that the joining part of each of the sleeves 43 is constituted by an external shoulder 45 which, with external circular groove for O-ring seal 47, is engaged in an external cylindrical sleeve 44 , sleeve comprising, at each end of its internal bore, a groove 48 for a stop ring 49 cooperating with the rear face of the shoulder of the corresponding sleeve 43, when the two sleeves 43 are in end-to-end sliding contact . 7. Câble selon la revendication 1, caractérisé en ce que la partie de jonction de l'un des manchons 43 est composée d'un épaulement externe 45 avec gorge circulaire pour joint torique 47,tandis que la partie de jonction de l'autre manchon 32 est en forme de cloche 34 et est munie d'un alésage interne épaulé 35 de réception de l'épaulement 45 de l'autre manchon 43, cet alésage 35 étant muni d'une gorge interne 40 pour un joint d'arrêt 42 d'une portée pour un joint d'étanchéité 50 interposé entre lui et le manchon.7. Cable according to claim 1, characterized in that the junction part of one of the sleeves 43 is composed of an external shoulder 45 with circular groove for O-ring 47, while the junction part of the other sleeve 32 is bell-shaped 34 and is provided with a stepped internal bore 35 for receiving the shoulder 45 of the other sleeve 43, this bore 35 being provided with an internal groove 40 for a stop joint 42 d a range for a seal 50 interposed between it and the sleeve. 8. Câble selon la revendication 1, caractérisé en ce que les manchons 60 sont identiques et sont associés à une pièce de jonction commune 67 constituée par une douille cylindrique interne, douille sur laquelle ces deux manchons sont montés libres en rotation et calés en translation, en emprisonnant entre eux une bague élastique 65 constituant joint d'étanchéité aux poussières, distinctede joints 66 d'étanchéités au fluide interposés entre chaque manchon 60 et la douille 67, ce calage en translation étant assuré par rabattement des extrémités 67a de la douille cylindrique 65 vers l'extérieur et contre des chanfreins internes coniques 65 des manchons 60.8. Cable according to claim 1, characterized in that the sleeves 60 are identical and are associated with a common connecting piece 67 constituted by an internal cylindrical sleeve, sleeve on which these two sleeves are mounted free in rotation and locked in translation, by trapping between them an elastic ring 65 constituting a dust seal, distinct from seals 66 for sealing fluid interposed between each sleeve 60 and the sleeve 67, this wedging in translation being ensured by folding down the ends 67a of the cylindrical sleeve 65 outwards and against conical internal chamfers 65 of sleeves 60.
EP19900420327 1989-07-13 1990-07-10 Power-supply cable with internal fluid cooling Withdrawn EP0408476A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909949 1989-07-13
FR8909949A FR2649837B1 (en) 1989-07-13 1989-07-13 INTERNAL FLUID COOLING POWER SUPPLY CABLE

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EP0408476A2 true EP0408476A2 (en) 1991-01-16
EP0408476A3 EP0408476A3 (en) 1991-04-10

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP0511609A1 (en) * 1991-04-29 1992-11-04 BRAR ELETTROMECCANICA S.r.l. Power supply cable for arc furnaces
EP1179824A2 (en) * 2000-08-11 2002-02-13 Alcatel Temperature-resistant communication cable
US7592546B2 (en) 2002-11-05 2009-09-22 Volvo Lastvagnar Ab Cable duct for a vehicle
CN115954701A (en) * 2023-03-10 2023-04-11 广州市信征汽车零件有限公司 High-voltage wire harness assembly for electric automobile

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US3917898A (en) * 1971-10-22 1975-11-04 Showa Electric Wire & Cable Co Water-cooled cable

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US3917898A (en) * 1971-10-22 1975-11-04 Showa Electric Wire & Cable Co Water-cooled cable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0511609A1 (en) * 1991-04-29 1992-11-04 BRAR ELETTROMECCANICA S.r.l. Power supply cable for arc furnaces
EP1179824A2 (en) * 2000-08-11 2002-02-13 Alcatel Temperature-resistant communication cable
EP1179824A3 (en) * 2000-08-11 2004-05-12 Alcatel Temperature-resistant communication cable
US7592546B2 (en) 2002-11-05 2009-09-22 Volvo Lastvagnar Ab Cable duct for a vehicle
CN115954701A (en) * 2023-03-10 2023-04-11 广州市信征汽车零件有限公司 High-voltage wire harness assembly for electric automobile
CN115954701B (en) * 2023-03-10 2023-05-05 广州市信征汽车零件有限公司 High-voltage wire harness assembly for electric automobile

Also Published As

Publication number Publication date
FR2649837B1 (en) 1991-10-25
EP0408476A3 (en) 1991-04-10
FR2649837A1 (en) 1991-01-18

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