WO2021223935A1 - Device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas - Google Patents
Device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas Download PDFInfo
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- WO2021223935A1 WO2021223935A1 PCT/EP2021/057653 EP2021057653W WO2021223935A1 WO 2021223935 A1 WO2021223935 A1 WO 2021223935A1 EP 2021057653 W EP2021057653 W EP 2021057653W WO 2021223935 A1 WO2021223935 A1 WO 2021223935A1
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- Prior art keywords
- flange
- wing
- leakage currents
- assembling
- intended
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/066—Devices for maintaining distance between conductor and enclosure
- H02G5/068—Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures
Definitions
- the field of the invention is that of installations containing a pressurized gas subjected to an electrical risk.
- the invention relates to a device for assembling and removing the leakage currents from two portions of envelopes intended to contain a pressurized gas.
- the invention finds an application in particular for electrical substations in a metal enclosure, also called armored substations, and more generally for portions of piping intended to contain a pressurized gas equipped with an insulating cone, and for natural gas conduits.
- Electrical substations in metal enclosures consist of an assembly of independent compartments containing an insulating gas under pressure, most often SF6. Each compartment is connected to the next by means of assembly flanges and by means of mechanical jointing devices known per se.
- These shunts are generally formed from a plate of electrically conductive material, the ends of which are curved so as to come to rest against the flat faces of the flanges.
- This securing of the compartments causes a cut in the network, which is very penalizing for the operation of an armored station.
- a disadvantage of this sealing technique is that the paste or resin must be applied regularly and precisely around the flanges, which is all the more complex, long and tedious as the contour of the flanges can be at least partly inaccessible.
- known shunts mounted on a set of flanges further limit the possibility of dealing with leaks and can be a source of leakage in certain cases.
- the sealing operation on an armored substation compartment may present a risk to personnel working on the armored substation due to induction phenomena.
- the object of the invention is therefore in particular to overcome the drawbacks of the state of the art mentioned above.
- the object of the invention is to provide a technique for assembling and removing the leakage currents from two portions. envelope which makes it possible to confine leaks appearing at the level of the assembly zone of the two envelope portions.
- An objective of the invention is also to provide such a technique which is simple to implement and of reduced production cost.
- Another objective of the invention is to provide such a technique which is reliable and without danger for operators working on or near the portions of envelopes.
- first flange and a second flange each mounted at one end of said portions of envelopes
- an electrical connector substantially in the shape of a "U", intended to form a shunt between said first flange and said second flange, having a first lateral flange intended to come into contact with the face of said first flange facing the envelope portion attached to said first flange and a second lateral wing intended to come into contact with the face of said second flange facing the envelope portion attached to said second flange, said electrical connector having a first lumen formed in said first wing and a second lumen formed in said second wing, facing said first lumen, intended to allow passage of said assembly screw, the wings of said electrical connector being fixed to the first and second flanges by bolting to the using said assembly screw.
- the internal face of the first wing and the internal face of the second wing of said electrical connector each have a groove configured to house a sealing element intended to come in. bearing on the first flange or on the second flange, said groove being formed around the slot intended for the passage of said assembly screw of each wing
- the device comprises a first sealing cap and a second sealing cap comprising a housing adapted to receive the end of said screw projecting from said first flange, respectively from said second flange, said first cap and said second cap being intended to be mounted in a sealed manner bearing against the outer face of said first lateral wing or respectively of the outer face of said second lateral wing.
- the invention thus proposes, in an unprecedented manner, to implement an assembly formed of an electrical connector and tight caps to confine gas leaks appearing at the level of the assembly screw by preventing them from escaping towards the screw. 'outside.
- said first sealing cap and said second sealing cap each comprise a groove configured to house a seal intended to bear on the outer face of said first lateral wing or on the outer face of said second lateral wing, said groove being formed around the emerging section of the housing intended to receive one end of said assembly screw.
- said first sealing cap and said second sealing cap has a threaded internal surface enabling said first sealing cap and said second sealing cap to be screwed onto one end of said assembly screws.
- It may for example be the tapped surface of a blind tapped hole.
- said sealing element is an O-ring or a flat seal.
- said sealing element is a polymeric elastic seal, preferably of silane-modified polymer.
- said electrical connector is at least partially made of copper, aluminum and / or an electrically conductive metal alloy.
- a device as described above comprises a first nut and a second nut screwed onto said assembly screw until they are in contact with the external surface of said first wing and the external surface of said second wing, respectively. , so as to ensure said fixing by bolting of said wings to said first and second flanges and in that said housing in said first cap is adapted to receive said first nut and said housing in said second cap is able to receive said second nut.
- said two portions of envelopes are portions of envelopes of an electrical station in a metal enclosure.
- said two envelope portions are envelope portions of a gas distribution network.
- said two envelope portions have sections with different surfaces.
- said electrical connector is a machined part or a foundry part or is formed from machined and / or foundry parts.
- said caps are machined or foundry metal parts or parts obtained by plastic injection.
- FIG. 1 is a perspective view of the assembly area of two compartments of an electrical station in a metal enclosure, in which is implemented an exemplary embodiment of an assembly and evacuation device leakage currents according to the invention;
- Figure 2 is a sectional view of the device for assembling and discharging the leakage currents presented with reference to Figure 1.
- FIG. 1 illustrates an exemplary embodiment of a device 10 for assembling and discharging leakage currents according to the invention, in a perspective view.
- This device 10 assembles two compartments 11 and 12 of the same section of an electrical substation in a metal enclosure and comprises a first flange 13 and a second flange 14 welded respectively to the compartment 11 and to the compartment 12, enclosing an insulator 15.
- An electrical connector 18, or "shunt”, connecting the flanges 13 and 14, is mounted astride one of the assembly screws 16.
- This connector 18 has the general shape of a "U” and is formed of a central copper plate 19 on which are fixed two lateral wings 110 and 111 of aluminum.
- an electrical connector in a single, one-piece piece.
- the first lateral wing 110 and the second lateral wing 111 of this connector are pressed against the external faces of the flanges 13 and 14 by nuts 17.
- a circular groove 21 has been machined on the internal face of the first wing side 110 and on the inside face of the second side wing 111 around a slot 22 formed in these side wings 110 and 111 to allow the passage of the assembly screw 16, the groove 21 and the slot being concentric.
- These grooves 21 each house an O-ring 23, which is kept compressed against the external face of the flange 13 or 14, and prevents any leakage at the interface between the wings 110 and 111 of the electrical connector and the flanges 13 and 14.
- first sealing cap 24 and a second sealing cap 25 which have an internal housing 26 allowing to receive one end of the assembly screw and the nut 17 screwed thereon.
- the housing 26 of the caps 24 and 25 has at its bottom a threaded blind hole 27 which allows the caps 24 and 25 to be screwed onto the ends of the assembly screw 16.
- a circular groove 28 accommodating an O-ring 29 is formed on the base of the caps 24 and 25 around the through section of the housing 26.
- the O-rings 29 are compressed against the outer face of the side wings 110 and 111.
- gas leaking through the threads of the screw 16 cannot escape at the interface between the caps 24 and 25 and the wings 110 and 111 and remains contained in the volume of the housing 26.
- the outer face of the side wings 110 and 111 has a clearance 210 in order to be able to insert at least part of the caps 24 and 25 inside the wings, which makes the device more compact.
- a device for assembling and removing the leakage currents according to the invention in order to assemble two portions of the casings of pipes of a natural gas distribution network.
- the device for assembling and removing the leakage currents can comprise several electrical connectors and their two associated caps mounted on different assembly screws of the flanges.
Abstract
The invention relates to a device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas, comprising a substantially U-shaped electrical connector for forming a shunt between a first and a second clamp. According to the invention, the inner faces of the flanges of the electrical connector each have a groove configured to house a sealing element for bearing on the first clamp or on the second clamp and the device comprises a first and a second sealing cap comprising a housing suitable for receiving the end of a screw for joining the clamps which are designed to be mounted so as to form a seal bearing against the faces of the side flanges of the electrical connector.
Description
Dispositif d'assemblage et d'évacuation des courants de fuite de deux portions d'enveloppes destinées à contenir un gaz sous pressionDevice for assembling and removing leakage currents from two portions of casings intended to contain a pressurized gas
1. Domaine de l'invention 1. Field of the invention
Le domaine de l'invention est celui des installations renfermant un gaz sous pression soumises à un risque électrique. The field of the invention is that of installations containing a pressurized gas subjected to an electrical risk.
Plus précisément, l'invention concerne un dispositif d'assemblage et d'évacuation des courants de fuite de deux portions d'enveloppes destinées à contenir un gaz sous pression. More precisely, the invention relates to a device for assembling and removing the leakage currents from two portions of envelopes intended to contain a pressurized gas.
L'invention trouve notamment une application pour des postes électriques sous enveloppe métallique, aussi appelés postes blindés, et plus généralement pour des portions de tuyauterie destinées à contenir un gaz sous pression équipées d'un cône isolateur, et pour des conduites de gaz naturel. The invention finds an application in particular for electrical substations in a metal enclosure, also called armored substations, and more generally for portions of piping intended to contain a pressurized gas equipped with an insulating cone, and for natural gas conduits.
2. Etat de la technique 2. State of the art
Les postes électriques sous enveloppe métallique (aussi désignés par l'acronyme GIS pour « Gas Insulated Switchgear » en anglais), sont constitués d'un assemblage de compartiments indépendants contenant un gaz isolant sous pression, le plus souvent du SF6. Chaque compartiment est relié au suivant au moyen de brides d'assemblage et grâce à des dispositifs de jointage mécanique connus en soi. Electrical substations in metal enclosures (also designated by the acronym GIS for "Gas Insulated Switchgear" in English), consist of an assembly of independent compartments containing an insulating gas under pressure, most often SF6. Each compartment is connected to the next by means of assembly flanges and by means of mechanical jointing devices known per se.
Sur ces postes, il est connu d'installer des connecteurs électriques, aussi appelés shunts, entre deux brides d'assemblage, qui jouent un rôle d'organes de sécurité en permettant d'évacuer les courants de fuites sans que ceux-ci transitent uniquement par la visserie des brides. On these stations, it is known to install electrical connectors, also called shunts, between two assembly flanges, which play a role of safety devices by allowing leakage currents to be evacuated without them only passing through. by the screws of the flanges.
Ces shunts sont généralement formés d'une plaque en matériau conducteur d'électricité dont les extrémités sont recourbées afin de venir se plaquer sur des faces planes des brides. These shunts are generally formed from a plate of electrically conductive material, the ends of which are curved so as to come to rest against the flat faces of the flanges.
Avec le vieillissement des postes blindés, on constate une apparition progressive de fuites de gaz isolant au niveau des brides d'assemblage de compartiments.
De ces fuites résulte une baisse de la pression interne dans les compartiments ou du disjoncteur, qui si elle atteint un seuil minimal de pression entraine une mise en sécurité des compartiments. With the aging of the armored stations, there is a gradual appearance of insulating gas leaks at the level of the compartment assembly flanges. These leaks result in a drop in the internal pressure in the compartments or in the circuit breaker, which if it reaches a minimum pressure threshold causes the compartments to be made safe.
Cette mise en sécurité des compartiments provoque une coupure du réseau, ce qui est très pénalisant pour l'exploitation d'un poste blindé. This securing of the compartments causes a cut in the network, which is very penalizing for the operation of an armored station.
C’est pourquoi actuellement des opérations de maintenance sont réalisées régulièrement sur les compartiments des postes blindés, afin de surveiller et de compenser les éventuelles baisses de pression ou de réduire les fuites, dans le but d’éviter un risque de coupure électrique. Ces opérations de maintenance permanentes représentent à la fin de l’année une dépense importante pour l’exploitant du poste blindé. This is why maintenance operations are currently carried out regularly on the compartments of the armored stations, in order to monitor and compensate for any pressure drops or to reduce leaks, in order to avoid a risk of power outage. These permanent maintenance operations represent a significant expense for the operator of the armored post at the end of the year.
Pour tenter de remédier au problème d’étanchéité des compartiments de postes blindés, on a proposé de colmater les points d’amorce de fuite avec de la pâte d’étanchéité ou des résines. In an attempt to remedy the leaktightness problem of armored substation compartments, it has been proposed to seal the leakage initiation points with sealant or resins.
Un inconvénient de cette technique de colmatage est que la pâte ou la résine doit être appliquée régulièrement et avec précision autour des brides ce qui est d’autant plus complexe, long et fastidieux que le contour des brides peut être au moins en partie peu accessible. A disadvantage of this sealing technique is that the paste or resin must be applied regularly and precisely around the flanges, which is all the more complex, long and tedious as the contour of the flanges can be at least partly inaccessible.
Par ailleurs, des shunts connus montés sur un jeu de brides limitent encore plus la possibilité de traiter les fuites et peuvent être une source de fuite dans certains cas. Furthermore, known shunts mounted on a set of flanges further limit the possibility of dealing with leaks and can be a source of leakage in certain cases.
Un autre inconvénient de cette technique connue est que l’application doit être renouvelée régulièrement. Another drawback of this known technique is that the application must be renewed regularly.
Enfin, l’opération de colmatage sur un compartiment de poste blindé peut présenter un risque pour les personnels qui interviennent sur le poste blindé du fait des phénomènes d’induction. Finally, the sealing operation on an armored substation compartment may present a risk to personnel working on the armored substation due to induction phenomena.
3. Objectifs de l'invention 3. Objectives of the invention
L'invention a donc notamment pour objectif de pallier les inconvénients de l'état de la technique cités ci-dessus. The object of the invention is therefore in particular to overcome the drawbacks of the state of the art mentioned above.
Plus précisément l'invention a pour objectif de fournir une technique d'assemblage et d'évacuation des courants de fuite de deux portions
d'enveloppe qui permette de confiner des fuites apparaissant au niveau de la zone d'assemblage des deux portions d'enveloppes. More precisely, the object of the invention is to provide a technique for assembling and removing the leakage currents from two portions. envelope which makes it possible to confine leaks appearing at the level of the assembly zone of the two envelope portions.
Un objectif de l'invention est également de fournir une telle technique qui soit simple à mettre en oeuvre et d'un coût de revient réduit. An objective of the invention is also to provide such a technique which is simple to implement and of reduced production cost.
Un autre objectif de l'invention est de fournir une telle technique qui soit fiable, et sans danger pour des opérateurs intervenant sur ou à proximité des portions d'enveloppes. Another objective of the invention is to provide such a technique which is reliable and without danger for operators working on or near the portions of envelopes.
4. Exposé de l'invention 4. Disclosure of the invention
Ces objectifs, ainsi que d'autres qui apparaîtront par la suite sont atteints à l'aide d'un dispositif d'assemblage et d'évacuation des courants de fuite de deux portions d'enveloppes destinées à contenir un gaz sous pression, comprenant : These objectives, as well as others which will appear subsequently, are achieved with the aid of a device for assembling and removing the leakage currents from two portions of casings intended to contain a pressurized gas, comprising:
- une première bride et une deuxième bride montées chacune à une extrémité desdites portions d'enveloppes ; a first flange and a second flange each mounted at one end of said portions of envelopes;
- au moins une vis d'assemblage de ladite première bride et de ladite deuxième bride ; et - at least one assembly screw of said first flange and of said second flange; and
- un connecteur électrique sensiblement en forme de « U », destiné à former un shunt entre ladite première bride et ladite deuxième bride, présentant une première aile latérale destinée à venir en contact avec la face de ladite première bride tournée vers la portion d'enveloppe fixée à ladite première bride et une deuxième aile latérale destinée à venir en contact avec la face de ladite deuxième bride tournée vers la portion d'enveloppe fixée à ladite deuxième bride, ledit connecteur électrique présentant une première lumière formée dans ladite première aile et une deuxième lumière formée dans ladite deuxième aile, en vis-à-vis de ladite première lumière, destinées à permettre le passage de ladite vis d'assemblage, les ailes dudit connecteur électrique étant fixées à la première et à la deuxième brides par boulonnage à l'aide de ladite vis d'assemblage. - an electrical connector substantially in the shape of a "U", intended to form a shunt between said first flange and said second flange, having a first lateral flange intended to come into contact with the face of said first flange facing the envelope portion attached to said first flange and a second lateral wing intended to come into contact with the face of said second flange facing the envelope portion attached to said second flange, said electrical connector having a first lumen formed in said first wing and a second lumen formed in said second wing, facing said first lumen, intended to allow passage of said assembly screw, the wings of said electrical connector being fixed to the first and second flanges by bolting to the using said assembly screw.
Selon l'invention, la face interne de la première aile et la face interne de la deuxième aile dudit connecteur électrique présentent chacune une rainure configurée pour loger un élément d'étanchéité destiné à venir en
appui sur la première bride ou sur la deuxième bride, ladite rainure étant formée autour de la lumière destinée au passage de ladite vis d'assemblage de chaque aile, et le dispositif comprend un premier capuchon d'étanchéité et un deuxième capuchon d'étanchéité comprenant un logement apte à recevoir l'extrémité de ladite vis faisant saillie de ladite première bride, respectivement de ladite deuxième bride, ledit premier capuchon et ledit deuxième capuchon étant destinés à être montés de manière étanche en appui contre la face externe de ladite première aile latérale ou respectivement de la face externe de ladite deuxième aile latérale. According to the invention, the internal face of the first wing and the internal face of the second wing of said electrical connector each have a groove configured to house a sealing element intended to come in. bearing on the first flange or on the second flange, said groove being formed around the slot intended for the passage of said assembly screw of each wing, and the device comprises a first sealing cap and a second sealing cap comprising a housing adapted to receive the end of said screw projecting from said first flange, respectively from said second flange, said first cap and said second cap being intended to be mounted in a sealed manner bearing against the outer face of said first lateral wing or respectively of the outer face of said second lateral wing.
L'invention propose ainsi, de façon inédite, de mettre en oeuvre un ensemble formé d'un connecteur électrique et des capuchons étanches pour confiner les fuites de gaz apparaissant au niveau de la vis d'assemblage en les empêchant de s'échapper vers l'extérieur. The invention thus proposes, in an unprecedented manner, to implement an assembly formed of an electrical connector and tight caps to confine gas leaks appearing at the level of the assembly screw by preventing them from escaping towards the screw. 'outside.
Dans un mode de réalisation préférentiel de l'invention, ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité comprennent chacun une rainure configurée pour loger un joint d'étanchéité destiné à venir en appui sur la face externe de ladite première aile latérale ou sur la face externe de ladite deuxième aile latérale, ladite rainure étant formée autour de la section débouchante du logement destiné à recevoir une extrémité de ladite vis d'assemblage. In a preferred embodiment of the invention, said first sealing cap and said second sealing cap each comprise a groove configured to house a seal intended to bear on the outer face of said first lateral wing or on the outer face of said second lateral wing, said groove being formed around the emerging section of the housing intended to receive one end of said assembly screw.
Dans un mode de réalisation avantageux de l'invention, ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité présente une surface interne taraudée permettant de visser ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité sur une extrémité de ladite vis d'assemblage. In an advantageous embodiment of the invention, said first sealing cap and said second sealing cap has a threaded internal surface enabling said first sealing cap and said second sealing cap to be screwed onto one end of said assembly screws.
Il peut par exemple s'agir de la surface taraudée d'un trou taraudé borgne. It may for example be the tapped surface of a blind tapped hole.
Dans un mode de réalisation avantageux de l'invention, ledit élément d'étanchéité est un joint torique ou un joint plat. In an advantageous embodiment of the invention, said sealing element is an O-ring or a flat seal.
Selon un aspect particulier de l'invention, ledit élément d'étanchéité est un joint élastique polymérique, de préférence en polymère modifié silane.
Avantageusement, ledit connecteur électrique est au moins partiellement en cuivre, en aluminium et/ou en un alliage métallique conducteur d'électricité. According to a particular aspect of the invention, said sealing element is a polymeric elastic seal, preferably of silane-modified polymer. Advantageously, said electrical connector is at least partially made of copper, aluminum and / or an electrically conductive metal alloy.
De façon préférentielle, un dispositif tel que décrit ci-dessus comprend un premier écrou et un deuxième écrou vissés sur ladite vis d'assemblage jusqu'à être en contact avec respectivement la surface externe de ladite première aile et la surface externe de ladite deuxième aile, de sorte à assurer ladite fixation par boulonnage desdites ailes auxdites première et deuxième brides et en ce que ledit logement dans ledit premier capuchon est apte à recevoir ledit premier écrou et ledit logement dans ledit deuxième capuchon est apte à recevoir ledit deuxième écrou. Preferably, a device as described above comprises a first nut and a second nut screwed onto said assembly screw until they are in contact with the external surface of said first wing and the external surface of said second wing, respectively. , so as to ensure said fixing by bolting of said wings to said first and second flanges and in that said housing in said first cap is adapted to receive said first nut and said housing in said second cap is able to receive said second nut.
Dans un mode de réalisation particulier de l'invention, lesdites deux portions d'enveloppes sont des portions d'enveloppes d'un poste électrique sous enveloppe métallique. In a particular embodiment of the invention, said two portions of envelopes are portions of envelopes of an electrical station in a metal enclosure.
Dans un autre mode de réalisation particulier de l'invention, lesdites deux portions d'enveloppes sont des portions d'enveloppes d'un réseau de distribution de gaz. In another particular embodiment of the invention, said two envelope portions are envelope portions of a gas distribution network.
Selon un aspect particulier de l'invention, lesdites deux portions d'enveloppes présentent des sections de surfaces différentes. According to a particular aspect of the invention, said two envelope portions have sections with different surfaces.
Dans un mode de réalisation particulier de l'invention, ledit connecteur électrique est une pièce usinée ou une pièce de fonderie ou est formé au de pièces usinées et/ou de fonderie. In a particular embodiment of the invention, said electrical connector is a machined part or a foundry part or is formed from machined and / or foundry parts.
Dans un mode de réalisation particulier de l'invention, lesdits capuchons sont des pièces métalliques usinées ou de fonderie ou des pièces obtenues par injection plastique. In a particular embodiment of the invention, said caps are machined or foundry metal parts or parts obtained by plastic injection.
5. Liste des figures 5. List of figures
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation de l'invention, donné à titre de simple exemple illustratif et non limitatif, et des dessins annexés parmi lesquels :
- La figure 1 est une vue en perspective de la zone d'assemblage de deux compartiments d'un poste électrique sous enveloppe métallique, dans laquelle est mise en oeuvre un exemple de mode de réalisation d'un dispositif d'assemblage et d'évacuation des courants de fuite selon l'invention ; Other characteristics and advantages of the invention will emerge more clearly on reading the following description of an embodiment of the invention, given by way of simple illustrative and non-limiting example, and the appended drawings, among which: - Figure 1 is a perspective view of the assembly area of two compartments of an electrical station in a metal enclosure, in which is implemented an exemplary embodiment of an assembly and evacuation device leakage currents according to the invention;
- La figure 2 est une vue en coupe du dispositif d'assemblage et d'évacuation des courants de fuite présenté en référence à la figure 1. - Figure 2 is a sectional view of the device for assembling and discharging the leakage currents presented with reference to Figure 1.
6. Description détaillée de l'invention 6. Detailed description of the invention
On a illustré sur la figure 1, un exemple de mode de réalisation d'un dispositif 10 d'assemblage et d'évacuation des courants de fuite selon l'invention, dans une vue en perspective. FIG. 1 illustrates an exemplary embodiment of a device 10 for assembling and discharging leakage currents according to the invention, in a perspective view.
Ce dispositif 10 assure l'assemblage de deux compartiments 11 et 12 de même section d'un poste électrique sous enveloppe métallique et comprend une première bride 13 et une deuxième bride 14 soudés respectivement au compartiment 11 et au compartiment 12, enserrant un isolateur 15. This device 10 assembles two compartments 11 and 12 of the same section of an electrical substation in a metal enclosure and comprises a first flange 13 and a second flange 14 welded respectively to the compartment 11 and to the compartment 12, enclosing an insulator 15.
Ces brides 13 et 14 sont fixées ensemble par boulonnage à l'aide de vingt- quatre vis d'assemblage 16 réparties régulièrement sur un contour circulaire et de leurs écrous 17. These flanges 13 and 14 are fixed together by bolting using twenty-four assembly screws 16 distributed regularly on a circular contour and their nuts 17.
Un connecteur électrique 18, ou « shunt », reliant les brides 13 et 14, est monté à cheval sur une des vis d'assemblage 16. An electrical connector 18, or "shunt", connecting the flanges 13 and 14, is mounted astride one of the assembly screws 16.
Ce connecteur 18 présente une forme générale en « U » et est formé d'une platine centrale en cuivre 19 sur laquelle sont fixées deux ailes latérales 110 et 111 en aluminium. This connector 18 has the general shape of a "U" and is formed of a central copper plate 19 on which are fixed two lateral wings 110 and 111 of aluminum.
Dans une variante de ce mode de réalisation particulier de l'invention, il peut être envisagé de mettre en oeuvre un connecteur électrique d'une seule pièce monobloc. In a variant of this particular embodiment of the invention, it may be envisaged to use an electrical connector in a single, one-piece piece.
La première aile latérale 110 et la deuxième aile latérale 111 de ce connecteur sont plaquées en appui contre les faces externes des brides 13 et 14 par des écrous 17. The first lateral wing 110 and the second lateral wing 111 of this connector are pressed against the external faces of the flanges 13 and 14 by nuts 17.
Comme on peut le voir sur la figure 2, dans une vue en coupe du dispositif 10, une gorge circulaire 21 a été usinée sur la face interne de la première aile
latérale 110 et sur face interne de la deuxième aile latérale 111 autour d'une lumière 22 formée dans ces ailes latérales 110 et 111 pour permettre le passage de la vis d'assemblage 16, la gorge 21 et la lumière étant concentriques. Ces gorges 21 logent chacune un joint torique 23, qui est maintenu compressé contre la face externe de la bride 13 ou 14, et empêche toute fuite à l'interface entre les ailes 110 et 111 du connecteur électrique et les brides 13 et 14. As can be seen in Figure 2, in a sectional view of the device 10, a circular groove 21 has been machined on the internal face of the first wing side 110 and on the inside face of the second side wing 111 around a slot 22 formed in these side wings 110 and 111 to allow the passage of the assembly screw 16, the groove 21 and the slot being concentric. These grooves 21 each house an O-ring 23, which is kept compressed against the external face of the flange 13 or 14, and prevents any leakage at the interface between the wings 110 and 111 of the electrical connector and the flanges 13 and 14.
Par ailleurs, les extrémités de la vis d'assemblage 16 faisant saillies hors des brides 13 et 14 sont coiffées respectivement d'un premier capuchon d'étanchéité 24 et d'un deuxième capuchon d'étanchéité 25, qui présentent un logement interne 26 permettant de recevoir une extrémité de la vis d'assemblage et l'écrou 17 vissé sur celle-ci. Furthermore, the ends of the assembly screw 16 projecting out of the flanges 13 and 14 are respectively capped with a first sealing cap 24 and a second sealing cap 25, which have an internal housing 26 allowing to receive one end of the assembly screw and the nut 17 screwed thereon.
Le logement 26 des capuchons 24 et 25 présente en son fond un trou taraudé borgne 27 qui permet de visser les capuchons 24 et 25 sur les extrémités de la vis d'assemblage 16. The housing 26 of the caps 24 and 25 has at its bottom a threaded blind hole 27 which allows the caps 24 and 25 to be screwed onto the ends of the assembly screw 16.
Une gorge circulaire 28 accueillant un joint torique 29 est formée sur la base des capuchons 24 et 25 autour de la section débouchante du logement 26. A circular groove 28 accommodating an O-ring 29 is formed on the base of the caps 24 and 25 around the through section of the housing 26.
Lorsque les capuchons 24 et 25 sont vissés sur les extrémités de la vis d'assemblage 16, via un quart de tour, les joints toriques 29 sont comprimés contre la face externe des ailes latérales 110 et 111. Ainsi du gaz fuyant au travers du filetage de la vis 16, ne peut pas s'échapper à l'interface entre les capuchons 24 et 25 et les ailes 110 et 111 et reste contenu dans le volume du logement 26. On notera que dans ce mode de réalisation particulier de l'invention, la face externe des ailes latérales 110 et 111 présente un dégagement 210 pour pouvoir insérer au moins une partie des capuchons 24 et 25 à l'intérieur des ailes, ce qui rend le dispositif plus compact. When the caps 24 and 25 are screwed onto the ends of the cap screw 16, via a quarter turn, the O-rings 29 are compressed against the outer face of the side wings 110 and 111. Thus gas leaking through the threads of the screw 16, cannot escape at the interface between the caps 24 and 25 and the wings 110 and 111 and remains contained in the volume of the housing 26. It will be noted that in this particular embodiment of the invention , the outer face of the side wings 110 and 111 has a clearance 210 in order to be able to insert at least part of the caps 24 and 25 inside the wings, which makes the device more compact.
Dans une variante du mode réalisation de l'invention décrit ci-dessus, il peut être également prévu de mettre en oeuvre un dispositif selon l'invention adapté pour assembler et évacuer des fuites de courant de deux portions d'enveloppes de sections différentes, sans sortir du cadre de l'invention.
Dans encore une autre variante, il peut être envisagé de mettre en œuvre un dispositif d'assemblage et d'évacuation des courants de fuite selon l'invention pour assembler deux portions d'enveloppes de conduites d'un réseau de distribution de gaz naturel. II convient enfin de noter que dans des modes de réalisation particuliers de l'invention, le dispositif d'assemblage et d'évacuation des courants de fuite peut comprendre plusieurs connecteurs électriques et leurs deux capuchons associés montés sur différentes vis d'assemblage des brides.
In a variant of the embodiment of the invention described above, provision may also be made to implement a device according to the invention suitable for assembling and removing current leaks from two portions of casings of different sections, without depart from the scope of the invention. In yet another variant, it may be envisaged to implement a device for assembling and removing the leakage currents according to the invention in order to assemble two portions of the casings of pipes of a natural gas distribution network. Finally, it should be noted that in particular embodiments of the invention, the device for assembling and removing the leakage currents can comprise several electrical connectors and their two associated caps mounted on different assembly screws of the flanges.
Claims
1. Dispositif d'assemblage et d'évacuation des courants de fuite de deux portions d'enveloppes destinées à contenir un gaz sous pression, comprenant : - une première bride et une deuxième bride montées chacune à une extrémité desdites portions d'enveloppes ;1. Device for assembling and removing the leakage currents from two portions of casings intended to contain a pressurized gas, comprising: a first flange and a second flange each mounted at one end of said portions of casings;
- au moins une vis d'assemblage de ladite première bride et de ladite deuxième bride ; et- at least one assembly screw of said first flange and of said second flange; and
- un connecteur électrique sensiblement en forme de « U », destiné à former un shunt entre ladite première bride et ladite deuxième bride, présentant une première aile latérale destinée à venir en contact avec la face de ladite première bride tournée vers la portion d'enveloppe fixée à ladite première bride et une deuxième aile latérale destinée à venir en contact avec la face de ladite deuxième bride tournée vers la portion d'enveloppe fixée à ladite deuxième bride, ledit connecteur électrique présentant une première lumière formée dans ladite première aile et une deuxième lumière formée dans ladite deuxième aile, en vis-à-vis de ladite première lumière, destinées à permettre le passage de ladite vis d'assemblage, les ailes dudit connecteur électrique étant fixées à la première et à la deuxième brides par boulonnage à l'aide de ladite vis d'assemblage, caractérisé en ce que la face interne de la première aile et la face interne de la deuxième aile dudit connecteur électrique présentent chacune une rainure configurée pour loger un élément d'étanchéité destiné à venir en appui sur la première bride ou sur la deuxième bride, ladite rainure étant formée autour de la lumière destinée au passage de ladite vis d'assemblage de chaque aile, et en ce que le dispositif comprend un premier capuchon d'étanchéité et un deuxième capuchon d'étanchéité comprenant un logement apte à recevoir l'extrémité de ladite vis faisant saillie de ladite première bride, respectivement de ladite deuxième bride, ledit premier
capuchon et ledit deuxième capuchon étant destinés à être montés de manière étanche en appui contre la face externe de ladite première aile latérale ou respectivement de la face externe de ladite deuxième aile latérale. - an electrical connector substantially in the shape of a "U", intended to form a shunt between said first flange and said second flange, having a first lateral flange intended to come into contact with the face of said first flange facing the envelope portion attached to said first flange and a second lateral wing intended to come into contact with the face of said second flange facing the envelope portion attached to said second flange, said electrical connector having a first lumen formed in said first wing and a second lumen formed in said second wing, facing said first lumen, intended to allow passage of said assembly screw, the wings of said electrical connector being fixed to the first and second flanges by bolting to the using said assembly screw, characterized in that the internal face of the first wing and the internal face of the second wing of said electrical connector present t each a groove configured to accommodate a sealing element intended to bear on the first flange or on the second flange, said groove being formed around the slot intended for the passage of said assembly screw of each wing, and in that the device comprises a first sealing cap and a second sealing cap comprising a housing adapted to receive the end of said screw projecting from said first flange, respectively from said second flange, said first cap and said second cap being intended to be mounted in a sealed manner, bearing against the external face of said first lateral wing or respectively of the external face of said second lateral wing.
2. Dispositif d'assemblage et d'évacuation des courants de fuite selon la revendication 1, caractérisé en ce que ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité comprennent chacun une rainure configurée pour loger un joint d'étanchéité destiné à venir en appui sur la face externe de ladite première aile latérale ou sur la face externe de ladite deuxième aile latérale, ladite rainure étant formée autour de la section débouchante du logement destiné à recevoir une extrémité de ladite vis d'assemblage. 2. Device for assembling and draining leakage currents according to claim 1, characterized in that said first sealing cap and said second sealing cap each comprise a groove configured to house a seal intended for bear on the outer face of said first side wing or on the outer face of said second side wing, said groove being formed around the emerging section of the housing intended to receive one end of said assembly screw.
3. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 et 2, caractérisé en ce que ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité présente une surface interne taraudée permettant de visser ledit premier capuchon d'étanchéité et ledit deuxième capuchon d'étanchéité sur une extrémité de ladite vis d'assemblage. 3. Device for assembling and removing leakage currents according to any one of claims 1 and 2, characterized in that said first sealing cap and said second sealing cap has a threaded internal surface for screwing. said first sealing cap and said second sealing cap on one end of said cap screw.
4. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit élément d'étanchéité est un joint torique ou un joint plat. 4. Device for assembling and removing leakage currents according to any one of claims 1 to 3, characterized in that said sealing element is an O-ring or a flat seal.
5. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit élément d'étanchéité est un joint élastique polymérique, de préférence en polymère modifié silane. 5. Device for assembling and removing leakage currents according to any one of claims 1 to 3, characterized in that said sealing element is a polymeric elastic seal, preferably of silane-modified polymer.
6. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ledit connecteur électrique est au moins partiellement en cuivre, en aluminium et/ou en un alliage métallique conducteur d'électricité. 6. Device for assembling and removing leakage currents according to any one of claims 1 to 5, characterized in that said electrical connector is at least partially made of copper, aluminum and / or a conductive metal alloy. 'electricity.
7. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il
comprend un premier écrou et un deuxième écrou vissés sur ladite vis d'assemblage jusqu'à être en contact avec respectivement la surface externe de ladite première aile et la surface externe de ladite deuxième aile, de sorte à assurer ladite fixation par boulonnage desdites ailes auxdites première et deuxième brides et en ce que ledit logement dans ledit premier capuchon est apte à recevoir ledit premier écrou et ledit logement dans ledit deuxième capuchon est apte à recevoir ledit deuxième écrou. 7. Device for assembling and discharging the leakage currents according to any one of claims 1 to 6, characterized in that it comprises a first nut and a second nut screwed onto said assembly screw until they are in contact with the external surface of said first wing and the external surface of said second wing, respectively, so as to ensure said fixing by bolting said wings to said first and second flanges and in that said housing in said first cap is adapted to receive said first nut and said housing in said second cap is adapted to receive said second nut.
8. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 7, caractérisé en ce que lesdites deux portions d'enveloppes sont des portions d'enveloppes d'un poste électrique sous enveloppe métallique. 8. Device for assembling and removing leakage currents according to any one of claims 1 to 7, characterized in that said two portions of casings are portions of casings of an electrical station in a metal casing.
9. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 7, caractérisé en ce que lesdites deux portions d'enveloppes sont des portions d'enveloppes d'un réseau de distribution de gaz. 9. Device for assembling and removing leakage currents according to any one of claims 1 to 7, characterized in that said two portions of casings are portions of casings of a gas distribution network.
10. Dispositif d'assemblage et d'évacuation des courants de fuite selon l'une quelconque des revendications 1 à 9, caractérisé en ce que lesdites deux portions d'enveloppes présentent des sections de surfaces différentes.
10. A device for assembling and removing the leakage currents according to any one of claims 1 to 9, characterized in that said two portions of envelopes have sections of different surfaces.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21715836.9A EP4147316A1 (en) | 2020-05-07 | 2021-03-24 | Device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas |
| CA3176769A CA3176769A1 (en) | 2020-05-07 | 2021-03-24 | Device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2004526 | 2020-05-07 | ||
| FR2004526A FR3110033B1 (en) | 2020-05-07 | 2020-05-07 | Device for assembling and evacuating leakage currents from two portions of envelopes intended to contain a pressurized gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021223935A1 true WO2021223935A1 (en) | 2021-11-11 |
Family
ID=72356078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2021/057653 WO2021223935A1 (en) | 2020-05-07 | 2021-03-24 | Device for joining, and discharging the leakage currents from, two shroud portions for containing a pressurised gas |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4147316A1 (en) |
| CA (1) | CA3176769A1 (en) |
| FR (1) | FR3110033B1 (en) |
| WO (1) | WO2021223935A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53110475U (en) * | 1977-02-14 | 1978-09-04 | ||
| JPS56171509U (en) * | 1980-05-22 | 1981-12-18 | ||
| JPH03222622A (en) * | 1990-01-26 | 1991-10-01 | Mitsubishi Electric Corp | Gas-insulated electrical machinery and apparatus |
-
2020
- 2020-05-07 FR FR2004526A patent/FR3110033B1/en active Active
-
2021
- 2021-03-24 EP EP21715836.9A patent/EP4147316A1/en active Pending
- 2021-03-24 WO PCT/EP2021/057653 patent/WO2021223935A1/en unknown
- 2021-03-24 CA CA3176769A patent/CA3176769A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53110475U (en) * | 1977-02-14 | 1978-09-04 | ||
| JPS56171509U (en) * | 1980-05-22 | 1981-12-18 | ||
| JPH03222622A (en) * | 1990-01-26 | 1991-10-01 | Mitsubishi Electric Corp | Gas-insulated electrical machinery and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3176769A1 (en) | 2021-11-11 |
| FR3110033A1 (en) | 2021-11-12 |
| EP4147316A1 (en) | 2023-03-15 |
| FR3110033B1 (en) | 2022-04-15 |
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