EP2497174B1 - System for transmitting electric power through a wall - Google Patents

System for transmitting electric power through a wall Download PDF

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Publication number
EP2497174B1
EP2497174B1 EP10788110.4A EP10788110A EP2497174B1 EP 2497174 B1 EP2497174 B1 EP 2497174B1 EP 10788110 A EP10788110 A EP 10788110A EP 2497174 B1 EP2497174 B1 EP 2497174B1
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EP
European Patent Office
Prior art keywords
wall
subassembly
penetrator
electric power
housing
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EP10788110.4A
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German (de)
French (fr)
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EP2497174A2 (en
Inventor
Henri Rousseau
Yves Cadoret
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Carrier Kheops Bac SA
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Carrier Kheops Bac SA
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Publication of EP2497174A2 publication Critical patent/EP2497174A2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H01R13/748—Means for mounting coupling parts in openings of a panel using one or more screws

Definitions

  • the invention relates to the transmission of electrical power through a wall, and in particular the field of the devices for crossing the wall ("feedthrough" in English) and indenters.
  • An indenter usually comprises two conductive elements in electrical contact with each other, and one or more insulative element (s) arranged around these conductive elements. This or these insulating elements are secured to the wall to be crossed, on either side of this wall.
  • An indenter with conductive elements having a relatively large diameter section is known, thereby enabling relatively high current currents to be withstood.
  • This indenter comprises insulating elements made of polymer.
  • This indenter can withstand a pressure difference on either side of the wall of the order of 35 MPa (350 bar) for a temperature of 80 ° C. For higher temperatures, taking into account the degradation of the polymer, it is necessary to provide for smaller tolerable pressure differences, particularly if the indenter must be used for relatively long periods of time, of the order of twenty years per year. example.
  • a system for transmitting electrical power through a wall comprising one (or more) housing intended to be mounted on either side of the wall to be crossed, and two subassemblies of indenter arranged on both sides. other of the housing, each indenter subassembly comprising a conductive element and an insulating element integral with each other.
  • the system is arranged to maintain electrical contact between these conductive elements, while allowing relative axial movement of the conductive elements relative to each other.
  • the insulating elements abut against the (or) housing so that the compressive forces experienced by each subset of indenter are at least partly transmitted to this housing.
  • the system is arranged so that the compressive forces experienced by one indenter subset are transmitted to the housing rather than to the other indenter subset. This system thus makes it possible to decouple transmission of electrical power and transmission of forces.
  • the insulating member or insulating member portion undergoing the compressive forces transmits these forces to the penetrator portion of the other side of the wall.
  • the indenter works in both traction and compression.
  • the proposed system is instead arranged so that each subset of indenter works in compression only.
  • the insulating elements materials that relatively poorly support tensile forces, such as for example ceramic materials.
  • These ceramic materials have the advantage of withstanding relatively high compression forces, for example of the order of 2000 bar (200 MPa).
  • the invention is in no way limited to the use of ceramics.
  • glass or else a polymer, for example a Peek (registered trademark) polymer.
  • Peek registered trademark
  • the housing may be metal for example, or any other material capable of supporting the forces transmitted via the insulating elements.
  • Each conductive element can be in one or more rooms.
  • Each insulating element may be in one or more rooms.
  • the invention can find an application in equipment intended to be placed at sea ("offshore” English), several thousand meters under water, for example pumps, compressors, or other.
  • the pressure on one side of the wall of the pump housing may be the order of several hundred bars (several tens of MPa), while on the other side of the wall, the pressure of the pump can reach the thousand bars (several hundred MPa).
  • the system is so arranged that the two indenter subsets operate in compression only, with the compressive forces experienced by each indenter subset being transmitted to the housing and not to the other indenter subset.
  • the system may comprise a sleeve ("boot" in English) disposed around a portion of electrical contact between the conductive elements.
  • This sleeve makes it possible to seal this part of contact. This prevents the entry of fluid, and in particular water, inside the system, which could cause leakage of electricity to the housing.
  • This sleeve may be made of elastomer or one (or more) other insulating material.
  • the system may include during assembly a wind for balancing the interior of the system with the atmospheric pressure. The wind is then quenched, and the inside of the system is sealed.
  • the system has no sleeve around the contact portion.
  • the invention is not limited by the shape of the electrical contact part, as long as this part is arranged to allow relative movement of the conductive elements relative to each other.
  • the insulating element of this subset may be arranged around the conductive element of this subset over at least a portion of the length of this conductive element.
  • the system may comprise, for at least one indenter subset, a metal contact element disposed around and fixed to the conductive element of this indenter subassembly, and furthermore fixed to the element insulation of this indenter subset.
  • the contact element is made of metal, the connection with the conductive element can withstand the shear caused by the compressive forces experienced by the indenter subassembly.
  • the contact element and the insulating element may be designed to be fixed to each other by a seal substantially in a plane perpendicular to the plane of the axis of the system.
  • this contact element makes it possible to secure the conductive element and the insulating element, even when the compression forces undergone are relatively high.
  • the contact member may be attached to the insulating member by solder or other means, for example an O-ring and a screw system. Brazing is a sealing means resistant to relatively high pressures.
  • the system advantageously comprises other sealing means for isolating the interior of the system from the outside, for example other solders or welds.
  • the interior of the system can be filled with a fluid, for example air at atmospheric pressure, or even with oil.
  • equipment for an underwater installation comprising one (or more) wall capable of withstanding a pressure greater than 20 MPa.
  • the equipment further comprises a power transmission system as described above.
  • the housing of this system is secured to the wall so as to allow the transmission of electrical power through this wall.
  • the equipment may include a pump, a compressor, or the like.
  • the wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment, are advantageously capable of withstanding a pressure greater than 30 MPa, advantageously greater than 34.5 MPa, advantageously greater than 69 MPa, advantageously greater than 88.8 MPa, advantageously greater than 100 MPa, advantageously greater than 103.6 MPa, advantageously greater than 155.7 MPa, advantageously greater than 200 MPa.
  • the wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment are advantageously capable of withstanding a temperature or temperature difference between inside and outside the equipment greater than 50 ° C, preferably greater than 80 ° C, preferably greater than 120 ° C, and less than 1500 ° C.
  • the wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment are advantageously capable of withstanding a temperature below -20 ° C, advantageously less than -50 ° C, and greater than -200 ° C.
  • insulating elements can be arranged directly against a third element itself arranged directly against the housing.
  • the invention is therefore not limited by the manner in which an insulating element is disposed against the housing, insofar as the compressive forces experienced by the indenter subassembly are at least partially transmitted to the housing.
  • pump 3 is supplied with electricity by a cable 4 from a boat 5, a platform or even a port.
  • This pump 3 is placed in equipment, here a pump housing 6, having a wall 10 adapted to withstand an external pressure P1 of the order of 30 MPa and an internal pressure P2 of the order of 100 MPa.
  • the temperature T1 outside the pump housing 6 may be of the order of 1 ° C, while the temperature T2 inside the pump housing 6 may be about 120 ° C.
  • a system 11 for transmitting electric power through the wall 10 enables the cable 4 to be conveyed to the pump 3.
  • This system 11 is described in more detail with reference to the figure 2 .
  • This system 11 makes it possible to transmit the electrical power necessary for the proper operation of the pump 3, and this under the pressure and temperature conditions described above. Also, the specifications of this system 11 provides for normal operation during a lifetime of about 25 years.
  • the figure 2 shows an example of an electric power transmission system 11 through a wall 10.
  • the system 11 comprises a first subassembly of indenter 12 and a second subassembly of indenter 22 arranged on both sides of wall 10.
  • Each subassembly 12, 22 comprises a conductive element 14, 24, and an insulating element 13, 23, around the corresponding conductive element 14, 24.
  • the conductive elements 14, 24 have a section dimensioned to withstand relatively high current currents, for example between 125 A and 2500 A, advantageously between 250 A and 1500 A, advantageously between 400 A and 1000 A, and also high voltages, for example between 3000 V and 200 kV, advantageously between 3600 V and 200 kV, advantageously between 6000 V or 6600 V, and 200 kV.
  • relatively high current currents for example between 125 A and 2500 A, advantageously between 250 A and 1500 A, advantageously between 400 A and 1000 A
  • high voltages for example between 3000 V and 200 kV, advantageously between 3600 V and 200 kV, advantageously between 6000 V or 6600 V, and 200 kV.
  • the conductive elements may for example have a section of about 50 to about 300 mm 2 .
  • the two conductive elements 14, 24 are electrically connected to one another by a contact portion 36.
  • this contact portion 36 has a portion 16 in one piece with the conductive element 14 and a female part 26 in one piece with the conductive element 24. This arrangement thus allows a relative axial movement of the conductive elements 14, 24 with respect to the other while ensuring electrical contact between the conductive elements 14, 24.
  • the system 11 further comprises a first contact element 17 for securing the conductive element 14 to the insulating element 13.
  • the conductive element 14 is made of metal, for example copper, while the insulating element 13 is made of an electrically insulating material, for example ceramic. It would be relatively difficult to find a means for directly joining these elements 13, 14 to one another and which is capable of withstanding relatively high shear forces.
  • the contact element 17 being made of metal, it can be fixed, for example by soldering, on the conductive element 14.
  • the solder 18 resulting from this brazing between two metal parts is able to withstand relatively high shear forces.
  • the contact element 17 can also be fixed by soldering to the insulating element 13.
  • the resulting solder 19 is intended to be mainly subjected to compressive forces, and should therefore be relatively little deteriorated by the pressure forces, even if this solder makes it possible to join two types of materials that are very different from one another.
  • a second contact element 27 makes it possible to secure the conductive element 24 and the insulating element 23.
  • the contact elements 17, 27 may be made of a relatively hard metal, for example steel.
  • the braze fastening has the advantage of being relatively resistant to pressure, and may further enable two elements made of relatively different materials, for example a metal and a ceramic material, to be bonded to one another.
  • the solder joint obtained has the advantage of being impervious to the surrounding fluid.
  • the system 11 further comprises a housing 40 fixed to the wall 10 by screw-type fixing means, and an elastomer sleeve 60 for sealing the contact portion 36.
  • the housing 40 is arranged to let the sleeve 60 during assembly. Then a spacer 42 and flanges ("flange” in English) 41, 51 or discs ("pressure cap” in English) are attached to the housing 40 according to means well known to those skilled in the art.
  • the insulating elements 13, 23 are brazed to the metal parts 41, 51.
  • the insulating elements 13, 23 thus transmit to the housing 10 at least 80% of the compressive forces undergone by the pressure, advantageously at least 90% of the these efforts, preferably at least 95% of these efforts, and advantageously all or almost all of these efforts.
  • the insulating elements are arranged so that the solders 62, 61 fixing the insulating elements 13, 23 to the metal parts 41, 51 are likely to be subjected to compressive forces rather than to shear forces, when the system 11 is subjected to relatively high pressures.
  • the system 11 further comprises a wind at the location 70, to balance the pressure inside the system, and in particular around the contact portion, with the external pressure.
  • the wind is plugged, for example by welding.
  • the interior of the system 11 is then isolated from the outside, thus preventing the entry of fluid.
  • a slight radial clearance between the insulating elements 13, 23 and the respective conductive elements 14, 24 can be noted. This slight clearance can make it possible to make up for any defects in the positioning of these elements.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
  • Multi-Conductor Connections (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Patch Boards (AREA)

Description

L'invention concerne la transmission de puissance électrique à travers une paroi, et en particulier le domaine des dispositifs de traversée de paroi (« feedthrough » en anglais) et des pénétrateurs.The invention relates to the transmission of electrical power through a wall, and in particular the field of the devices for crossing the wall ("feedthrough" in English) and indenters.

Un pénétrateur comporte habituellement deux éléments conducteurs en contact électrique l'un avec l'autre, et un ou plusieurs élément(s) isolant(s) disposé(s) autour de ces éléments conducteurs. Ce ou ces éléments isolants sont solidarisés à la paroi à traverser, de part et d'autre de cette paroi.An indenter usually comprises two conductive elements in electrical contact with each other, and one or more insulative element (s) arranged around these conductive elements. This or these insulating elements are secured to the wall to be crossed, on either side of this wall.

On connaît un pénétrateur avec des éléments conducteurs ayant une section de diamètre relativement élevé, permettant ainsi de supporter des intensités de courant relativement élevées. Ce pénétrateur comporte des éléments isolants en polymère. Ce pénétrateur peut supporter une différence de pression de part et d'autre de la paroi de l'ordre de 35MPa (350 bars) pour une température de 80°C. Pour des températures plus élevées, compte tenu de la dégradation du polymère, il faut prévoir des différences de pressions supportables plus faibles, en particulier si le pénétrateur doit être utilisé pendant des durées relativement longues, de l'ordre de la vingtaine d'années par exemple.An indenter with conductive elements having a relatively large diameter section is known, thereby enabling relatively high current currents to be withstood. This indenter comprises insulating elements made of polymer. This indenter can withstand a pressure difference on either side of the wall of the order of 35 MPa (350 bar) for a temperature of 80 ° C. For higher temperatures, taking into account the degradation of the polymer, it is necessary to provide for smaller tolerable pressure differences, particularly if the indenter must be used for relatively long periods of time, of the order of twenty years per year. example.

On connaît un autre pénétrateur par WO 2008/004079 A qui décrit un système de transmission de puissance à travers une paroi, comprenant un boîtier destiné à être solidarisé à la paroi à traverser, et deux sous-ensembles de pénétrateur disposés de part et d'autre du boîtier, chaque sous-ensemble de pénétrateur comprenant un élément conducteur et un élément isolant solidaires l'un de l'autre, le système étant agencé de façon à maintenir un contact électrique entre les éléments conducteurs desdits sous-ensembles de pénétrateur tout en autorisant un mouvement axial relatif desdits éléments conducteurs l'un par rapport à l'autre.We know another indenter by WO 2008/004079 A which describes a power transmission system through a wall, comprising a housing intended to be secured to the wall to be crossed, and two subassemblies of indenter arranged on either side of the housing, each subset of indenter comprising a conductive element and an insulating element integral with each other, the system being arranged to maintain electrical contact between the conductive elements of said indenter subassemblies while allowing relative axial movement of said conductive elements one compared to each other.

Il existe un besoin pour un système de transmission de puissance électrique à travers une paroi apte à supporter une différence de pression plus élevée, tout en supportant des intensités de courant transmis relativement élevées.There is a need for an electrical power transmission system through a wall adapted to withstand a higher pressure difference while supporting relatively high current currents.

Il est proposé un système de transmission de puissance électrique à travers une paroi, comprenant un (ou plusieurs) boîtier destiné à être monté de part et d'autre de la paroi à traverser, et deux sous-ensembles de pénétrateur disposés de part et d'autre du boîtier, chaque sous-ensemble de pénétrateur comprenant un élément conducteur et un élément isolant solidaires l'un de l'autre. Le système est agencé de façon à maintenir un contact électrique entre ces éléments conducteurs, tout en autorisant un mouvement axial relatif des éléments conducteurs l'un par rapport à l'autre. Les éléments isolants viennent en butée contre le (ou les) boîtier de façon à ce que les efforts de compression subis par chaque sous-ensemble de pénétrateur soient au moins en partie transmis à ce boîtier.There is proposed a system for transmitting electrical power through a wall, comprising one (or more) housing intended to be mounted on either side of the wall to be crossed, and two subassemblies of indenter arranged on both sides. other of the housing, each indenter subassembly comprising a conductive element and an insulating element integral with each other. The system is arranged to maintain electrical contact between these conductive elements, while allowing relative axial movement of the conductive elements relative to each other. The insulating elements abut against the (or) housing so that the compressive forces experienced by each subset of indenter are at least partly transmitted to this housing.

Ainsi, le système est agencé de sorte que les efforts de compression subis par un sous-ensemble de pénétrateur sont transmis au boîtier plutôt qu'à l'autre sous-ensemble de pénétrateur. Ce système permet ainsi de découpler transmission de puissance électrique et transmission des efforts.Thus, the system is arranged so that the compressive forces experienced by one indenter subset are transmitted to the housing rather than to the other indenter subset. This system thus makes it possible to decouple transmission of electrical power and transmission of forces.

Avec un système de transmission de puissance électrique à travers une paroi avec un seul pénétrateur, comme dans l'art antérieur, l'élément isolant ou la partie d'élément isolant subissant les efforts de compression transmet ces efforts à la partie du pénétrateur de l'autre coté de la paroi. Le pénétrateur travaille ainsi à la fois en traction et en compression.With a system of electrical power transmission through a wall with a single indenter, as in the prior art, the insulating member or insulating member portion undergoing the compressive forces transmits these forces to the penetrator portion of the other side of the wall. The indenter works in both traction and compression.

Le système proposé est au contraire agencé de sorte que chaque sous-ensemble de pénétrateur travaille en compression seulement.The proposed system is instead arranged so that each subset of indenter works in compression only.

Ainsi, il est possible de choisir pour les éléments isolants des matériaux supportant relativement mal les efforts en traction, comme par exemple des matériaux céramiques. Ces matériaux céramiques présentent l'avantage de supporter des efforts de compression relativement élevés, par exemple de l'ordre de 2000 bars (200 MPa).Thus, it is possible to choose for the insulating elements materials that relatively poorly support tensile forces, such as for example ceramic materials. These ceramic materials have the advantage of withstanding relatively high compression forces, for example of the order of 2000 bar (200 MPa).

L'invention n'est en rien limitée à l'utilisation de la céramique. On peut par exemple prévoir d'utiliser du verre, ou bien encore un polymère, par exemple un polymère Peek (marque déposée).On peut prévoir un seul boîtier ou plusieurs boîtiers, par exemple deux boîtiers respectivement de part et d'autre de la paroi.The invention is in no way limited to the use of ceramics. For example, it is possible to use glass, or else a polymer, for example a Peek (registered trademark) polymer. It is possible to provide a single casing or several casings, for example two casings respectively on either side of the casing. wall.

Le boîtier peut être en métal par exemple, ou bien en tout autre matériau capable de supporter les efforts transmis via les éléments isolants.The housing may be metal for example, or any other material capable of supporting the forces transmitted via the insulating elements.

Chaque élément conducteur peut être en une ou plusieurs pièces.Each conductive element can be in one or more rooms.

Chaque élément isolant peut être en une ou plusieurs pièces.Each insulating element may be in one or more rooms.

L'invention peut trouver une application dans les équipements destinés à être placés en mer (« offshore » anglais), à plusieurs milliers de mètres sous l'eau, par exemple des pompes, des compresseurs, ou autre.The invention can find an application in equipment intended to be placed at sea ("offshore" English), several thousand meters under water, for example pumps, compressors, or other.

Par exemple, dans le cas d'une pompe, du fait de la profondeur, la pression d'un coté de la paroi du boîtier de la pompe peut être de l'ordre de plusieurs centaines de bars (plusieurs dizaines de MPa), tandis que de l'autre coté de la paroi, la pression de la pompe peut atteindre le millier de bars (plusieurs centaines de MPa). Le système est ainsi agencé de sorte que les deux sous-ensembles de pénétrateur travaillent en compression seulement, les efforts de compression subis par chaque sous-ensemble de pénétrateur étant transmis au boîtier et non à l'autre sous-ensemble de pénétrateur.For example, in the case of a pump, because of the depth, the pressure on one side of the wall of the pump housing may be the order of several hundred bars (several tens of MPa), while on the other side of the wall, the pressure of the pump can reach the thousand bars (several hundred MPa). The system is so arranged that the two indenter subsets operate in compression only, with the compressive forces experienced by each indenter subset being transmitted to the housing and not to the other indenter subset.

L'invention n'est bien entendu pas limitée à cet exemple d'application.The invention is of course not limited to this application example.

Avantageusement, le système peut comporter un manchon (« boot » en anglais) disposé autour d'une partie de contact électrique entre les éléments conducteurs. Ce manchon permet d'étanchéifier cette partie de contact. On évite ainsi l'entrée de fluide, et en particulier d'eau, à l'intérieur du système, ce qui risquerait de provoquer des fuites d'électricité vers le boîtier.Advantageously, the system may comprise a sleeve ("boot" in English) disposed around a portion of electrical contact between the conductive elements. This sleeve makes it possible to seal this part of contact. This prevents the entry of fluid, and in particular water, inside the system, which could cause leakage of electricity to the housing.

Ce manchon peut être réalisé en élastomère ou en un (ou plusieurs) autre matériau isolant. Dans ce cas, le système peut comporter lors de l'assemblage un vent permettant d'équilibrer l'intérieur du système avec la pression atmosphérique. Le vent est ensuite rebouché, et l'intérieur du système étanchéifié.This sleeve may be made of elastomer or one (or more) other insulating material. In this case, the system may include during assembly a wind for balancing the interior of the system with the atmospheric pressure. The wind is then quenched, and the inside of the system is sealed.

Alternativement, le système ne comporte pas de manchon autour de la partie de contact. On peut par exemple prévoir de laisser de l'air, par exemple à 1 atm (soit environ 101325 Pa), autour de cette partie de contact.Alternatively, the system has no sleeve around the contact portion. For example, it is possible to leave air, for example at 1 atm (about 101325 Pa), around this contact part.

L'invention n'est pas limitée par la forme de la partie de contact électrique, du moment que cette partie est agencée de façon à autoriser un mouvement relatif des éléments conducteurs l'un par rapport à l'autre.The invention is not limited by the shape of the electrical contact part, as long as this part is arranged to allow relative movement of the conductive elements relative to each other.

Pour chaque sous-ensemble de pénétrateur, l'élément isolant de ce sous-ensemble peut être disposé autour de l'élément conducteur de ce sous-ensemble, sur une partie au moins de la longueur de cet élément conducteur.For each indenter subassembly, the insulating element of this subset may be arranged around the conductive element of this subset over at least a portion of the length of this conductive element.

Avantageusement, le système peut comporter, pour au moins un sous-ensemble de pénétrateur, un élément de contact en métal, disposé autour de et fixé à l'élément conducteur de ce sous-ensemble de pénétrateur, et en outre fixé à l'élément isolant de ce sous-ensemble de pénétrateur.Advantageously, the system may comprise, for at least one indenter subset, a metal contact element disposed around and fixed to the conductive element of this indenter subassembly, and furthermore fixed to the element insulation of this indenter subset.

L'élément de contact étant en métal, la liaison avec l'élément conducteur peut supporter le cisaillement occasionné par les efforts en compression subis par le sous-ensemble de pénétrateur.Since the contact element is made of metal, the connection with the conductive element can withstand the shear caused by the compressive forces experienced by the indenter subassembly.

L'élément de contact et l'élément isolant peuvent être conçus de façon à être fixés l'un à l'autre par un joint sensiblement dans un plan perpendiculaire au plan de l'axe du système. Ainsi, lorsque le sous-ensemble subit des efforts de compression, le joint entre l'élément de contact, en métal, et l'élément isolant, en un matériau isolant, est-il travaillé en compression seulement.The contact element and the insulating element may be designed to be fixed to each other by a seal substantially in a plane perpendicular to the plane of the axis of the system. Thus, when the subassembly undergoes compressive forces, the joint between the metal contact element and the insulating element, in an insulating material, is worked in compression only.

Ainsi, cet élément de contact permet de solidariser l'élément conducteur et l'élément isolant, même lorsque les efforts de compression subis sont relativement importants.Thus, this contact element makes it possible to secure the conductive element and the insulating element, even when the compression forces undergone are relatively high.

L'élément de contact peut être fixé à l'élément isolant par une brasure ou par un autre moyen, par exemple un joint torique et un système vissé. La brasure constitue un moyen d'étanchéification résistant à des pressions relativement élevées.The contact member may be attached to the insulating member by solder or other means, for example an O-ring and a screw system. Brazing is a sealing means resistant to relatively high pressures.

Le système comporte avantageusement d'autres moyens d'étanchéification pour isoler l'intérieur du système de l'extérieur, par exemple d'autres brasures ou des soudures.The system advantageously comprises other sealing means for isolating the interior of the system from the outside, for example other solders or welds.

L'intérieur du système peut être rempli d'un fluide, par exemple de l'air à la pression atmosphérique, ou bien encore de l'huile.The interior of the system can be filled with a fluid, for example air at atmospheric pressure, or even with oil.

Il est également proposé un équipement pour une installation sous-marine, comprenant une (ou plusieurs) paroi apte à supporter une pression supérieure à 20 MPa. L'équipement comporte en outre un système de transmission de puissance électrique tel que décrit ci-dessus. Le boîtier de ce système est solidarisé à la paroi de façon à permettre la transmission de puissance électrique à travers cette paroi.It is also proposed equipment for an underwater installation, comprising one (or more) wall capable of withstanding a pressure greater than 20 MPa. The equipment further comprises a power transmission system as described above. The housing of this system is secured to the wall so as to allow the transmission of electrical power through this wall.

L'équipement peut comprendre une pompe, un compresseur, ou autre.The equipment may include a pump, a compressor, or the like.

La paroi, le sous-ensemble de pénétrateur disposé à l'extérieur de l'équipement et/ou le sous-ensemble de pénétrateur disposé à l'intérieur de l'équipement, sont avantageusement capables de supporter une pression supérieure à 30 MPa, avantageusement supérieure à 34,5 MPa, avantageusement supérieure à 69 MPa, avantageusement supérieure à 88,8 MPa, avantageusement supérieure à 100MPa, avantageusement supérieure à 103,6 MPa, avantageusement supérieure à 155,7 MPa, avantageusement supérieure à 200 MPa.The wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment, are advantageously capable of withstanding a pressure greater than 30 MPa, advantageously greater than 34.5 MPa, advantageously greater than 69 MPa, advantageously greater than 88.8 MPa, advantageously greater than 100 MPa, advantageously greater than 103.6 MPa, advantageously greater than 155.7 MPa, advantageously greater than 200 MPa.

La paroi, le sous-ensemble de pénétrateur disposé à l'extérieur de l'équipement et/ou le sous-ensemble de pénétrateur disposé à l'intérieur de l'équipement sont avantageusement capables de supporter une température ou un différence de température entre l'intérieur et l'extérieur de l'équipement supérieure à 50°C, avantageusement supérieure à 80°C, avantageusement supérieure à 120°C, et inférieure à 1500°C.The wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment are advantageously capable of withstanding a temperature or temperature difference between inside and outside the equipment greater than 50 ° C, preferably greater than 80 ° C, preferably greater than 120 ° C, and less than 1500 ° C.

La paroi, le sous-ensemble de pénétrateur disposé à l'extérieur de l'équipement et/ou le sous-ensemble de pénétrateur disposé à l'intérieur de l'équipement sont avantageusement capables de supporter une température inférieure à -20°C, avantageusement inférieure à -50°C, et supérieure à -200°C.The wall, the indenter subassembly disposed outside the equipment and / or the indenter subassembly disposed inside the equipment are advantageously capable of withstanding a temperature below -20 ° C, advantageously less than -50 ° C, and greater than -200 ° C.

Dans la présente demande, par « contre », « sur » et autres termes similaires, on entend aussi bien « directement contre », « directement sur » qu' » indirectement contre », « indirectement sur ». En particulier, les éléments isolants peuvent être disposé directement contre un tiers élément lui-méme disposé directement contre le boîtier. L'invention n'est donc pas limitée par la manière dont est disposé un élément isolant contre le boîtier, dans la mesure où les efforts de compression subis par le sous-ensemble de pénétrateur sont au moins en partie transmis au boîtier.In this application, "against", "on" and other similar terms include "directly against", "directly on" and "indirectly against", "indirectly on". In particular, the insulating elements can be arranged directly against a third element itself arranged directly against the housing. The invention is therefore not limited by the manner in which an insulating element is disposed against the housing, insofar as the compressive forces experienced by the indenter subassembly are at least partially transmitted to the housing.

D'autres particularités et avantages de la présente invention apparaîtront dans la description ci-après, laquelle se rapporte à un mode de réalisation non limitatif.

  • La figure 1 montre un exemple d'installation de forage sous-marin comportant un équipement selon un mode de réalisation de l'invention.
  • La figure 2 est une vue en coupe d'un exemple de système de transmission de puissance électrique, selon un mode de réalisation de l'invention.
Other features and advantages of the present invention will appear in the description below, which relates to a non-limiting embodiment.
  • The figure 1 shows an example of an underwater drilling installation comprising equipment according to one embodiment of the invention.
  • The figure 2 is a sectional view of an example of an electric power transmission system, according to an embodiment of the invention.

Des références identiques peuvent être utilisées pour désigner des éléments identiques ou similaires d'une figure à l'autre.Identical references can be used to designate identical or similar elements from one figure to another.

En référence à la figure 1, est représentée une installation 1 sous-marine pour l'extraction d'hydrocarbures d'un puits 2. Une pompe 3 est alimentée en électricité par un câble 4 en provenance d'un bateau 5, d'une plate-forme ou bien encore d'un port.With reference to the figure 1 , there is shown a subsea installation 1 for the extraction of hydrocarbons from a well 2. pump 3 is supplied with electricity by a cable 4 from a boat 5, a platform or even a port.

Cette pompe 3 est placée dans un équipement, ici un boîtier pompe 6, ayant une paroi 10 apte à supporter une pression extérieure P1 de l'ordre de 30 MPa et une pression intérieure P2 de l'ordre de 100 MPa.This pump 3 is placed in equipment, here a pump housing 6, having a wall 10 adapted to withstand an external pressure P1 of the order of 30 MPa and an internal pressure P2 of the order of 100 MPa.

La température T1 à l'extérieur du boîtier pompe 6 peut être de l'ordre de 1°C, tandis que la température T2 à l'intérieur du boîtier pompe 6 peut être de 120°C environ.The temperature T1 outside the pump housing 6 may be of the order of 1 ° C, while the temperature T2 inside the pump housing 6 may be about 120 ° C.

Un système 11 de transmission de puissance électrique à travers la paroi 10 permet d'acheminer le câble 4 jusqu'à la pompe 3.A system 11 for transmitting electric power through the wall 10 enables the cable 4 to be conveyed to the pump 3.

Ce système 11 est décrit plus en détail en référence à la figure 2.This system 11 is described in more detail with reference to the figure 2 .

Ce système 11 permet de transmettre la puissance électrique nécessaire au bon fonctionnement de la pompe 3, et ce dans les conditions de pressions et de température décrites ci-dessus. Egalement, le cahier des charges de ce système 11 prévoit un fonctionnement normal pendant une durée de vie de l'ordre de 25 ans.This system 11 makes it possible to transmit the electrical power necessary for the proper operation of the pump 3, and this under the pressure and temperature conditions described above. Also, the specifications of this system 11 provides for normal operation during a lifetime of about 25 years.

La figure 2 montre un exemple de système de transmission de puissance électrique 11 à travers une paroi 10.The figure 2 shows an example of an electric power transmission system 11 through a wall 10.

Le système 11 comporte un premier sous-ensemble de pénétrateur 12 et un deuxième sous-ensemble de pénétrateur 22 disposés de part et d'autres de la paroi 10.The system 11 comprises a first subassembly of indenter 12 and a second subassembly of indenter 22 arranged on both sides of wall 10.

Chaque sous-ensemble 12, 22, comporte un élément conducteur 14, 24, et un élément isolant 13, 23, autour de l'élément conducteur correspondant 14, 24.Each subassembly 12, 22 comprises a conductive element 14, 24, and an insulating element 13, 23, around the corresponding conductive element 14, 24.

Les éléments conducteurs 14, 24 ont une section dimensionnée pour supporter des intensités de courant relativement élevées, par exemple entre 125 A et 2500 A, avantageusement entre 250 A et 1500 A, avantageusement entre 400 A et 1000 A, et des tensions également élevées, par exemple entre 3000 V et 200 kV, avantageusement entre 3600 V et 200 kV, avantageusement entre 6000 V, voire 6600 V, et 200 kV.The conductive elements 14, 24 have a section dimensioned to withstand relatively high current currents, for example between 125 A and 2500 A, advantageously between 250 A and 1500 A, advantageously between 400 A and 1000 A, and also high voltages, for example between 3000 V and 200 kV, advantageously between 3600 V and 200 kV, advantageously between 6000 V or 6600 V, and 200 kV.

Les éléments conducteurs peuvent par exemple avoir une section d'environ 50 à environ 300 mm2.The conductive elements may for example have a section of about 50 to about 300 mm 2 .

Les deux éléments conducteurs 14, 24 sont raccordés électriquement l'un à l'autre par une partie de contact 36. Dans l'exemple représenté, cette partie de contact 36 comporte une partie mâle 16 d'une seule pièce avec l'élément conducteur 14 et une partie femelle 26 d'une seule pièce avec l'élément conducteur 24. Cet agencement autorise ainsi un mouvement axial relatif des éléments conducteurs 14, 24 l'un par rapport à l'autre tout en garantissant un contact électrique entre les éléments conducteurs 14, 24.The two conductive elements 14, 24 are electrically connected to one another by a contact portion 36. In the example shown, this contact portion 36 has a portion 16 in one piece with the conductive element 14 and a female part 26 in one piece with the conductive element 24. This arrangement thus allows a relative axial movement of the conductive elements 14, 24 with respect to the other while ensuring electrical contact between the conductive elements 14, 24.

Le système 11 comporte en outre un premier élément de contact 17 pour solidariser l'élément conducteur 14 à l'élément isolant 13.The system 11 further comprises a first contact element 17 for securing the conductive element 14 to the insulating element 13.

En effet, l'élément conducteur 14 est en métal, par exemple en cuivre, tandis que l'élément isolant 13 est réalisé en un matériau électriquement isolant, par exemple en céramique. Il serait relativement délicat de trouver un moyen pour solidariser directement ces éléments 13, 14 l'un à l'autre et qui soit capable de supporter des forces de cisaillement relativement élevées.Indeed, the conductive element 14 is made of metal, for example copper, while the insulating element 13 is made of an electrically insulating material, for example ceramic. It would be relatively difficult to find a means for directly joining these elements 13, 14 to one another and which is capable of withstanding relatively high shear forces.

L'élément de contact 17 étant en métal, il peut être fixé, par exemple par brasage, sur l'élément conducteur 14. La brasure 18 résultant de ce brasage entre deux pièces métalliques est apte à supporter des efforts de cisaillement relativement élevés.The contact element 17 being made of metal, it can be fixed, for example by soldering, on the conductive element 14. The solder 18 resulting from this brazing between two metal parts is able to withstand relatively high shear forces.

L'élément de contact 17 peut être fixé également par brasage à l'élément isolant 13. La brasure 19 résultante est destinée à subir principalement des efforts de compression, et devrait donc être relativement peu détériorée par les forces de pression, et ce même si cette brasure permet de solidariser deux types de matériaux très différents l'un de l'autre.The contact element 17 can also be fixed by soldering to the insulating element 13. The resulting solder 19 is intended to be mainly subjected to compressive forces, and should therefore be relatively little deteriorated by the pressure forces, even if this solder makes it possible to join two types of materials that are very different from one another.

De la même façon, un deuxième élément de contact 27 permet de solidariser l'élément conducteur 24 et l'élément isolant 23.In the same way, a second contact element 27 makes it possible to secure the conductive element 24 and the insulating element 23.

Les éléments de contact 17, 27 peuvent être réalisés dans un métal relativement dur, en acier par exemple.The contact elements 17, 27 may be made of a relatively hard metal, for example steel.

La fixation par brasage présente l'avantage d'être relativement résistante à la pression, et peut en outre permettre de lier l'un à l'autre deux éléments réalisés dans des matières relativement différentes, par exemple un métal et un matériau céramique.The braze fastening has the advantage of being relatively resistant to pressure, and may further enable two elements made of relatively different materials, for example a metal and a ceramic material, to be bonded to one another.

Le joint de brasure obtenu présente l'avantage d'être étanche au fluide environnant.The solder joint obtained has the advantage of being impervious to the surrounding fluid.

Le système 11 comporte en outre un boîtier 40 fixé à la paroi 10 par des moyens de fixation de type vis, et un manchon 60 en élastomère pour étanchéifier la partie de contact 36.The system 11 further comprises a housing 40 fixed to the wall 10 by screw-type fixing means, and an elastomer sleeve 60 for sealing the contact portion 36.

Le boîtier 40 est agencé de façon à laisser passer le manchon 60 lors de l'assemblage. Puis une entretoise 42 et des flasques (« flange » en anglais) 41, 51 ou des disques (« pressure cap » en anglais) sont fixés au boîtier 40 selon des moyens bien connus de l'homme du métier.The housing 40 is arranged to let the sleeve 60 during assembly. Then a spacer 42 and flanges ("flange" in English) 41, 51 or discs ("pressure cap" in English) are attached to the housing 40 according to means well known to those skilled in the art.

Les éléments isolants 13, 23 sont fixés par brasage aux parties en métal 41, 51. Les éléments isolants 13, 23 transmettent ainsi au boîtier 10 au moins 80% des efforts de compression subis du fait de la pression, avantageusement au moins 90% de ces efforts, avantageusement au moins 95% de ces efforts, et avantageusement la totalité ou la quasi-totalité de ces efforts.The insulating elements 13, 23 are brazed to the metal parts 41, 51. The insulating elements 13, 23 thus transmit to the housing 10 at least 80% of the compressive forces undergone by the pressure, advantageously at least 90% of the these efforts, preferably at least 95% of these efforts, and advantageously all or almost all of these efforts.

Chaque sous-ensemble de pénétrateur 12, 22, travaille ainsi essentiellement en compression, et non en traction.Each subset of indenter 12, 22, thus works essentially in compression, and not in tension.

On notera que les éléments isolants sont agencés de sorte que les brasures 62, 61 fixant les éléments isolants 13, 23 aux parties en métal 41, 51 sont susceptibles d'être soumises à des forces de compression plutôt qu'à des forces de cisaillement, lorsque le système 11 est soumis à des pressions relativement élevées.It should be noted that the insulating elements are arranged so that the solders 62, 61 fixing the insulating elements 13, 23 to the metal parts 41, 51 are likely to be subjected to compressive forces rather than to shear forces, when the system 11 is subjected to relatively high pressures.

Lors de l'assemblage, le système 11 comporte en outre un vent à l'emplacement 70, pour équilibrer la pression à l'intérieur du système, et en particulier autour de la partie de contact, avec la pression extérieure. Une fois le système assemblé, le vent est rebouché, par soudure par exemple. L'intérieur du système 11 est alors isolé de l'extérieur, permettant ainsi d'empêcher l'entrée de fluide.During assembly, the system 11 further comprises a wind at the location 70, to balance the pressure inside the system, and in particular around the contact portion, with the external pressure. Once the system is assembled, the wind is plugged, for example by welding. The interior of the system 11 is then isolated from the outside, thus preventing the entry of fluid.

On peut noter un léger jeu radial entre les éléments isolants 13, 23 et les éléments conducteurs respectifs 14, 24. Ce léger jeu peut permettre de rattraper des éventuels défauts de positionnement de ces éléments.A slight radial clearance between the insulating elements 13, 23 and the respective conductive elements 14, 24 can be noted. This slight clearance can make it possible to make up for any defects in the positioning of these elements.

Claims (8)

  1. A system (11) for transmitting electric power through a wall (10), comprising
    a housing (40) designed to be secured to the wall to be fed through, and two penetrator subassemblies (12, 22) placed on either side of the housing, each penetrator subassembly comprising a conducting element (14, 24) and an insulating element (13, 23) secured to one another,
    wherein the insulating elements of said two penetrator subassemblies butt against the housing so that the compression forces sustained by each penetrator subassembly are at least partly transmitted to said housing,
    the system being arranged so as to maintain an electric contact between the conducting elements of said penetrator subassemblies while allowing a relative axial movement of said conducting elements relative to one another.
  2. The system (11) for transmitting electric power through a wall as claimed in claim 1, wherein, for at least one penetrator subassembly (12, 22), the insulating element (13, 23) of said subassembly is made of a ceramic material.
  3. The system (11) for transmitting electric power through a wall as claimed in one of claims 1 and 2, wherein, for at least one penetrator subassembly (12, 22),
    the insulating element (13, 23) is placed around the conducting element (14, 24) of said penetrator subassembly, on at least one portion of the length of said conducting element,
    a metal contact element (17, 27) is placed around the conducting element of said penetrator subassembly and is attached to said conducting element, said contact element also being attached to the insulating element of said penetrator subassembly.
  4. The system (11) for transmitting electric power through a wall as claimed in claim 3, wherein the contact element (17, 27) is secured to the insulating element (13, 23) by a braze (19).
  5. The system (11) for transmitting electric power through a wall as claimed in one of claims 1 to 4, also comprising a boot (60) placed around an electric contact portion (36) between the conducting elements (14, 24).
  6. The system (11) for transmitting electric power through a wall as claimed in one of claims 1 to 5, comprising a vent in order, during the assembly of said system, to balance the pressure inside said system with the outside pressure.
  7. The system (11) for transmitting electric power through a wall as claimed in claims 1 to 6, also comprising at least one sealing means (18, 19, 61, 62) in order to isolate the inside of said system from the outside of said system.
  8. An item of equipment (6) for a submarine installation, comprising a wall (10) capable of withstanding a pressure of more than 20 MPa,
    a system (11) as claimed in one of claims 1 to 7, the housing (40) of said system being secured to the wall so as to allow the transmission of electric power through said wall.
EP10788110.4A 2009-11-02 2010-10-29 System for transmitting electric power through a wall Active EP2497174B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0957735A FR2952245B1 (en) 2009-11-02 2009-11-02 SYSTEM FOR TRANSMITTING ELECTRIC POWER THROUGH A WALL
PCT/FR2010/052321 WO2011051631A2 (en) 2009-11-02 2010-10-29 System for transmitting electric power through a wall

Publications (2)

Publication Number Publication Date
EP2497174A2 EP2497174A2 (en) 2012-09-12
EP2497174B1 true EP2497174B1 (en) 2016-04-27

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US (1) US8901440B2 (en)
EP (1) EP2497174B1 (en)
BR (1) BR112012010415B1 (en)
FR (1) FR2952245B1 (en)
WO (1) WO2011051631A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8968018B2 (en) 2009-08-05 2015-03-03 Teledyne Instruments, Inc. Electrical penetrator assembly
US9419492B2 (en) * 2013-08-29 2016-08-16 Dresser-Rand Company Interface for the transmission of electrical power to a motor-compressor
EP2908396A1 (en) * 2014-02-14 2015-08-19 Siemens Aktiengesellschaft Penetrator device, wall device to be penetrated, penetrator assembly and method for establishing a penetration
SG11201607318VA (en) 2014-03-03 2016-10-28 Fmc Technologies Electrical penetrator assembly
US9812234B2 (en) * 2016-03-04 2017-11-07 Teledyne Scientific & Imaging, Llc Hermetically sealed electrical penetrator assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055972A (en) * 1958-07-03 1962-09-25 Robert E Peterson Fluid leakage seal for electric cables
US3877775A (en) * 1973-08-27 1975-04-15 Atomic Energy Commission Cable connector
GB8308978D0 (en) 1983-03-31 1983-05-11 Bicc Plc Electrical connectors
US5998736A (en) * 1998-01-20 1999-12-07 Relight America, Inc. High voltage wiring system for neon lights
GB2434698B (en) * 2006-01-26 2009-03-25 Diamould Ltd Contact pin assembly for a high voltage electrical connection
NO325860B1 (en) 2006-06-30 2008-08-04 Vetco Gray Scandinavia As Connector arrangement with a penetrator in a submersible electrical assembly

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WO2011051631A3 (en) 2012-05-03
FR2952245B1 (en) 2011-12-09
US8901440B2 (en) 2014-12-02
FR2952245A1 (en) 2011-05-06
BR112012010415B1 (en) 2020-08-04
EP2497174A2 (en) 2012-09-12
US20120217057A1 (en) 2012-08-30
WO2011051631A2 (en) 2011-05-05
BR112012010415A2 (en) 2016-03-08

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