EP2490302B1 - High voltage plug connection part for high voltage cable and method for producing same - Google Patents

High voltage plug connection part for high voltage cable and method for producing same Download PDF

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Publication number
EP2490302B1
EP2490302B1 EP11001204.4A EP11001204A EP2490302B1 EP 2490302 B1 EP2490302 B1 EP 2490302B1 EP 11001204 A EP11001204 A EP 11001204A EP 2490302 B1 EP2490302 B1 EP 2490302B1
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EP
European Patent Office
Prior art keywords
insulating body
connector component
housing
voltage
cable
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Application number
EP11001204.4A
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German (de)
French (fr)
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EP2490302A1 (en
Inventor
Bernd Beuster
Michael Schaefer
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Baker Hughes Digital Solutions GmbH
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GE Sensing and Inspection Technologies GmbH
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Application filed by GE Sensing and Inspection Technologies GmbH filed Critical GE Sensing and Inspection Technologies GmbH
Priority to EP11001204.4A priority Critical patent/EP2490302B1/en
Priority to US13/372,607 priority patent/US8657618B2/en
Priority to CN2012100405634A priority patent/CN102646887A/en
Publication of EP2490302A1 publication Critical patent/EP2490302A1/en
Application granted granted Critical
Publication of EP2490302B1 publication Critical patent/EP2490302B1/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
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Definitions

  • the invention relates to a high-voltage connector part for a high-voltage cable, with an insulating body made of a polymer material which surrounds a cable end portion of the high-voltage cable shell side, and a method for producing such a high-voltage connector part.
  • a long-known rubber backing comprises a tapered rubber body tapering towards the contact side, which is inserted into the socket to make a high voltage connection until a front of the rubber body abuts an edge of the socket.
  • the rubber body must first be precisely adjusted so that a defined pressure brings the cone to the concern.
  • the cable end portion is partially stripped, machined, then rubber rubber is wound around the cable end portion and vulcanized to this; however, this process is very expensive.
  • the rubber cone must be greased when mounting before the plug is inserted into the socket to achieve a good high voltage seal between the rubber cone and the socket.
  • the fat evaporates over time, is absorbed by the rubber or hardens;
  • the cable material gives way to aging. To maintain a reliable high-voltage seal requires regular and time-consuming maintenance, removing the old grease and applying new grease and checking the adjustment and repeating it if necessary.
  • thermoset insulating body made of a casting resin in which the insulating body produced in a mold by vacuum hot casting process, processed, coated, glued into the connector housing and glued and potted with the processed cable end section bubble and gap.
  • the thermoset insulating body is no longer removable for repair or maintenance purposes from the connector housing or from the cable end portion.
  • additional measures between the insulator and the socket to achieve a sufficient high voltage seal are required.
  • This high voltage plug is maintenance and adjustment free, but very expensive, prone to failure and can not be repaired.
  • the US 5,626,486 discloses a high-voltage connector part having an insulating body of an elastomeric material, which is accommodated in a fixed housing, wherein the connector part is formed so that due to a connection with a corresponding connector part, a substantially closed pressure space between the housing and the corresponding connector part is formed, wherein the pressure chamber is substantially completely filled by the insulating body, so that a pressurization of the insulating body, a gap-free, high-voltage-tight contact pressure of corresponding plug-in connection part to the insulator and a gap-free, high-voltage-tight contact pressure of the insulator to the housing causes.
  • the US 3,323,097 discloses a high voltage connector in which a cable end portion of the high voltage cable is surrounded on the shell side of the polymer material of the insulating, so that the cable end is in the closed pressure chamber, and pressurization of the insulator causes a gap-free, high voltage-tight contact of the insulating body to the outer surface of the cable end portion.
  • EP 0 487 025 A1 shows another high-voltage connector with an insulating body, which can be pressurized.
  • the object of the invention is to provide a permanently high voltage safe, maintenance-free connector part and a manufacturing method thereof, wherein production, maintenance and repair costs are significantly reduced.
  • the invention solves this problem with the features of the independent claims. Due to the existing of an elastomeric insulating an additional sealing element between the connector parts, such as a rubber disc, dispensable. According to the invention, a pressure space is formed in the connected plug connection parts between the plug housing, the corresponding plug connection part and the cable end portion, which is substantially completely filled by the insulating body.
  • the elastomer advantageously behaves like a liquid under pressure
  • a force exerted on the insulating body, in particular in the plug connection direction causes a gap-free, high-voltage-tight contact pressure of the corresponding plug connection part on the insulating body and a gap-free, high-voltage-tight contact pressure of the insulating body against the jacket surface of the cable end section and advantageously also to the housing.
  • an excellent high voltage seal is achieved between the connector parts, the insulating body, the cable end portion and the housing without further measures.
  • the previously common greasing of the insulating and the associated considerable maintenance can be omitted, as well as, for example, a gluing of the insulating on the cable end. Aging caused by the cable, and detachment of the insulator of the cable end portion and the housing can be compensated without further action.
  • elastomer material also includes materials which are elastic only in certain temperature ranges, in particular thermoplastic elastomers, and materials having a predominantly elastomeric and not predominantly plastic behavior.
  • the insulating body is filled in the housing, cast or injected, whereby the known in the prior art manufacturing steps and the corresponding amount of time can be significantly reduced.
  • in the housing is preferably a filling opening for pouring, filling or injecting elastomeric material provided for the insulating body.
  • the elastomeric material of the insulating body has a high degree of incompressibility.
  • Particularly preferred materials are therefore rubber or silicone elastomer. The latter has the advantage of being processable by open cold casting with little effort and low production times.
  • the high-voltage connector 10 comprises a high-voltage plug 11 and a suitable socket 12.
  • the connector 10 is used in particular for supplying an X-ray component, for example an X-ray tube, with high voltage, in particular in the range of 60 kV up to 500 kV.
  • the socket 12 is in particular arranged fixed to the housing, for example on the housing of a high voltage generator.
  • the plug 11 is in particular connected to a high-voltage cable 13, which in the usual way high-voltage conductor 14, a tubular insulating layer 15 for the high-voltage insulation of the conductors 14 to the outside, a conductive layer 16 for shielding and a protective jacket 17. In the region of the plug 11, the jacket 17 and the shield 16 are removed. This partially stripped cable section, which still has the tubular insulating layer 15 is referred to as cable end portion 18.
  • the plug 11 has a fixed housing 19, which is preferably electrically conductive and in particular made of metal, for example steel sheet. Even a conductive plastic would be possible.
  • the housing 19 is conductively connected to the cable shield 16 by means of a connector 20 to ensure continuous shielding.
  • the connection area between plug 11 and cable 13 is secured by means of a strain relief 21.
  • the entire plug 11 including the housing 19 and strain relief 21 is surrounded by a kink protection 22 made of a suitable material.
  • a contact housing 24 is preferably provided in the plug contacts 25 for the high voltage conductor 14 of the plug 11 and optionally a contact board 26 are arranged.
  • the socket 12 has a corresponding contact housing 40, in which corresponding plug contacts 41 and optionally a contact board 42 are arranged.
  • the contact housing 24, 40 are preferably inserted into one another, as in Fig. 1 and thus form a uniform contact space 23.
  • Fig. 2 can side connections 27 are shown for the high voltage conductor 14.
  • an insulating body 28 is arranged in the space between the plug housing 19 and the cable end portion 18.
  • the insulating body 28 consists of a preferably cold-crosslinked elastomeric material, for example silicone elastomer or rubber.
  • the cable end portion 18 extends through the entire Insulating body 28 and is preferably accommodated on its end face 44 in the contact housing 24, as in Fig. 1 is shown.
  • the insulating body 28 surrounds the cable end portion 18 on its lateral surface 46 around the entire circumference around, in particular annular, and forms a continuous axial opening 45 for the cable end portion 18.
  • the insulating body 28 preferably fits snugly against the inside of the housing 19.
  • the housing 19 is funnel-shaped and tapers advantageously for the purpose of field control to the cable side 38 out.
  • the insulator 28 is preferably completely received in the housing 19, i. that the insulating body 28 preferably has no part projecting beyond the housing 19.
  • the insulating body 28 may also project beyond the housing, for example when the contact surface 32 of the insulating body 28 is frustoconical.
  • the elastomeric material of the insulating body 28 can be removed from the housing 19 with relatively little effort.
  • the cable 13 or the cable end section 18 is inserted through an opening 29 arranged in the housing 19 on the cable side 38 of the plug 11, the inner diameter of which is adapted to the outer diameter of the cable end section 18. Subsequently, the located on the contact side 39 of the plug 11 opening 30 is closed in the housing 19 with a cover, not shown.
  • the preferably cold-crosslinking silicone rubber is then introduced through a filling opening 31 provided in the housing 11.
  • the filling space 43 is limited by the housing 19, the cable end portion 18, the contact housing 24 and the closure lid.
  • the pressurizing means 34 preferably consists of one or more, here two, disc springs 36, which have distributed over the circumference bores 35 for fastening means, not shown, in particular screws.
  • the plug 11 is first inserted along the connecting direction 33 in the socket 12, wherein the contact pins 25 of the plug 11 and the socket 12 intermesh to produce the high voltage connection.
  • the flat contact surface 32 of the insulator 28 abuts against a corresponding flat contact surface 37 of the socket 12, which is expediently also oriented perpendicular to the plug connection direction 33.
  • the surface 32 of the socket 12, the housing 19, the lateral surface 46 of the cable end portion 46 and the contact housing 24 form a substantially closed (apart from functional openings such as the filling opening 31) pressure chamber 43rd
  • the plate springs 36 are tightened by means of the cross through the openings 35 mounting screws against the socket 12 until the disc springs 36 are perpendicular, as in Fig. 1 shown, and thus indicate the achievement of a predetermined high fastening force in the range of, for example, 10 kN.
  • the fastening force is from the contact surface 37th of the socket 12 on the contact surface 32 of the insulating body 28 transmitted. Due to the high pressure exerted by the pressurizing device 34 on the insulating body 28 and the elasticity of the insulating body 28, an excellent high-voltage seal between the plug 11 and the socket 12 is achieved. The insertion of a separate rubber sealing disc and the introduction of grease between the connector part 11, 12 is no longer necessary, a regular maintenance of the connector 10 can therefore be dispensed with.
  • a pressure exerted by the contact surface 37 of the socket 12 on the contact surface 32 of the insulator 28 pressure is transferred from this and causes a contact pressure of the insulating body 28 to the entire insulating body 28 contacting surface 46 of the cable end portion 18 and to the whole of the insulating body 28 contacting inner surface of the housing 19, so that also between the insulator 28 and the cable end portion 18 and between the insulator 28 and the housing 19 an excellent high voltage seal is achieved.
  • An aging-conditioned yielding of the cable end portion 18 is compensated.
  • the housing 19 is designed to receive the forces exerted by the pressurizing device 34.
  • connector 10 can be reversed with built-in connector 12 and plug-in connector or socket 11 executed.

Description

Die Erfindung betrifft ein Hochspannungs-Steckverbindungsteil für ein Hochspannungskabel, mit einem Isolierkörper aus einem Polymermaterial, der einen Kabelendabschnitt des Hochspannungskabels mantelseitig umgibt, und ein Verfahren zur Herstellung eines solchen Hochspannungs-Steckverbindungsteils.The invention relates to a high-voltage connector part for a high-voltage cable, with an insulating body made of a polymer material which surrounds a cable end portion of the high-voltage cable shell side, and a method for producing such a high-voltage connector part.

Ein seit langem bekannter Gummikonusstecker umfasst einen kegelförmigen, sich zu der Kontaktseite hin verjüngenden Gummikörper, der zur Herstellung einer Hochspannungsverbindung in die Steckdose eingeschoben wird, bis eine Vorderseite des Gummikörpers an einer Kante der Steckdose anschlägt. Der Gummikörper muss zuvor genau justiert werden, damit ein definierter Druck den Konus zum Anliegen bringt. Zur Herstellung des Gummikörpers wird der Kabelendabschnitt teilweise abisoliert, spanabhebend bearbeitet, sodann wird Gummikautschuk um den Kabelendabschnitt gewickelt und an diesen anvulkanisiert; dieses Verfahren ist jedoch sehr aufwändig. Zudem muss der Gummikonus beim Montieren gefettet werden, bevor der Stecker in die Steckdose eingesetzt wird, um eine gute Hochspannungsdichtung zwischen dem Gummikonus und der Steckaufnahme zu erreichen. Jedoch verdunstet das Fett im Laufe der Zeit, wird vom Gummi aufgenommen oder härtet aus; zudem gibt das Kabelmaterial alterungsbedingt nach. Für die Aufrechterhaltung einer zuverlässigen Hochspannungsdichtung ist daher eine regelmäßige, aufwändige Wartung erforderlich, wobei das alte Fett entfernt und neues Fett aufgetragen und die Justage geprüft und gegebenenfalls wiederholt werden muss.A long-known rubber backing comprises a tapered rubber body tapering towards the contact side, which is inserted into the socket to make a high voltage connection until a front of the rubber body abuts an edge of the socket. The rubber body must first be precisely adjusted so that a defined pressure brings the cone to the concern. To produce the rubber body, the cable end portion is partially stripped, machined, then rubber rubber is wound around the cable end portion and vulcanized to this; however, this process is very expensive. In addition, the rubber cone must be greased when mounting before the plug is inserted into the socket to achieve a good high voltage seal between the rubber cone and the socket. However, the fat evaporates over time, is absorbed by the rubber or hardens; In addition, the cable material gives way to aging. To maintain a reliable high-voltage seal requires regular and time-consuming maintenance, removing the old grease and applying new grease and checking the adjustment and repeating it if necessary.

Es sind auch andersartige, nicht gattungsgemäße Gummikonusstecker bekannt, bei denen die Hochspannungsleiter direkt in den Gummikonus eingebettet sind, siehe beispielsweise US 5 358 419 und EP 0 938 759 B1 , bei denen der Gummikonus also nicht einen Kabelendabschnitt umgibt. Die Herstellung dieser Gummikonusstecker ist aufwändig.There are also other types, not generic rubber plug in known, in which the high voltage conductors are embedded directly in the rubber cone, see for example US 5,358,419 and EP 0 938 759 B1 in which the rubber cone does not surround a cable end section. The production of this rubber plug is complicated.

Es ist des Weiteren ein Hochspannungsstecker mit einem Isolierkörper aus einem Gießharz bekannt, bei denen der Isolierkörper in einer Gießform im Vakuumheißgussverfahren hergestellt, bearbeitet, beschichtet, in das Steckergehäuse eingeklebt und mit dem bearbeiteten Kabelendabschnitt blasen- und spaltfrei verklebt und vergossen wird. Der duroplastische Isolierkörper ist zu Reparatur- oder Wartungszwecken nicht mehr aus dem Steckergehäuse oder von dem Kabelendabschnitt entfernbar. Um ein spaltfreies Anliegen an der Steckdose zu gewährleisten, sind zusätzliche Maßnahmen zwischen dem Isolierkörper und der Steckdose zur Erzielung einer ausreichenden Hochspannungsdichtung erforderlich. Dieser Hochspannungsstecker ist wartungs- und justagefrei, aber sehr kostenintensiv, störanfällig und nicht reparierbar.It is further known a high-voltage connector with an insulating body made of a casting resin in which the insulating body produced in a mold by vacuum hot casting process, processed, coated, glued into the connector housing and glued and potted with the processed cable end section bubble and gap. The thermoset insulating body is no longer removable for repair or maintenance purposes from the connector housing or from the cable end portion. To ensure a gapless concern with the outlet, additional measures between the insulator and the socket to achieve a sufficient high voltage seal are required. This high voltage plug is maintenance and adjustment free, but very expensive, prone to failure and can not be repaired.

Die US 5 626 486 offenbart ein Hochspannungs-Steckverbindungsteil mit einem Isolierkörper aus einem Elastomermaterial, der in einem festen Gehäuse aufgenommen ist, wobei das Steckverbindungsteil so geformt ist, dass infolge einer Verbindung mit einem korrespondierenden Steckverbindungsteil ein im Wesentlichen geschlossener Druckraum zwischen dem Gehäuse und dem korrespondierenden Steckverbindungsteil gebildet wird, wobei der Druckraum durch den Isolierkörper im Wesentlichen vollständig ausgefüllt wird, so dass eine Druckbeaufschlagung des Isolierkörpers eine spaltfreie, hochspannungsdichte Anpressung des korrespondierenden Steckverbindungsteils an den Isolierkörper und eine spaltfreie, hochspannungsdichte Anpressung des Isolierkörpers an das Gehäuse bewirkt.The US 5,626,486 discloses a high-voltage connector part having an insulating body of an elastomeric material, which is accommodated in a fixed housing, wherein the connector part is formed so that due to a connection with a corresponding connector part, a substantially closed pressure space between the housing and the corresponding connector part is formed, wherein the pressure chamber is substantially completely filled by the insulating body, so that a pressurization of the insulating body, a gap-free, high-voltage-tight contact pressure of corresponding plug-in connection part to the insulator and a gap-free, high-voltage-tight contact pressure of the insulator to the housing causes.

Die US 3 323 097 offenbart einen Hochspannungssteckverbinder, in dem ein Kabelendabschnitt des Hochspannungskabels mantelseitig vom Polymermaterial des Isolierkörpers umgeben ist, so dass der Kabelendabschnitt im geschlossenen Druckraum liegt, und eine Druckbeaufschlagung des Isolierkörpers eine spaltfreie, hochspannungsdichte Anpressung des Isolierkörpers an die Mantelfläche des Kabelendabschnitts bewirkt.The US 3,323,097 discloses a high voltage connector in which a cable end portion of the high voltage cable is surrounded on the shell side of the polymer material of the insulating, so that the cable end is in the closed pressure chamber, and pressurization of the insulator causes a gap-free, high voltage-tight contact of the insulating body to the outer surface of the cable end portion.

EP 0 487 025 A1 zeigt einen weiteren Hochspannungsteckverbinder mit einem Isolierkörper, der mit Druck beaufschlagt werden kann. EP 0 487 025 A1 shows another high-voltage connector with an insulating body, which can be pressurized.

Die Aufgabe der Erfindung besteht darin, ein dauerhaft hochspannungssicheres, wartungsfreies Steckverbindungsteil und ein Herstellungsverfahren dafür bereitzustellen, wobei Herstellung-, Wartungs- und Reparaturaufwand erheblich reduziert sind.The object of the invention is to provide a permanently high voltage safe, maintenance-free connector part and a manufacturing method thereof, wherein production, maintenance and repair costs are significantly reduced.

Die Erfindung löst diese Aufgabe mit den Merkmalen der unabhängigen Ansprüche. Aufgrund des aus einem Elastomermaterial bestehenden Isolierkörpers ist ein zusätzliches Dichtelement zwischen den Steckverbindungsteilen, etwa eine Gummischeibe, entbehrlich. Erfindungsgemäß ist bei verbundenen Steckverbindungsteilen zwischen dem Steckergehäuse, dem korrespondierenden Steckverbindungsteil und dem Kabelendabschnitt ein Druckraum gebildet, der durch den Isolierkörper im Wesentlichen vollständig ausgefüllt wird. Da sich das Elastomer unter Druck vorteilhafterweise wie eine Flüssigkeit verhält, bewirkt eine auf den Isolierkörper insbesondere in der Steckverbindungsrichtung ausgeübte Kraft eine spaltfreie, hochspannungsdichte Anpressung des korrespondierenden Steckverbindungsteils an den Isolierkörper und eine spaltfreie, hochspannungsdichte Anpressung des Isolierkörpers an die Mantelfläche des Kabelendabschnitts und vorteilhafterweise auch an das Gehäuse. Im Ergebnis wird zwischen den Steckverbindungsteilen, dem Isolierkörper, dem Kabelendabschnitt und dem Gehäuse ohne weitere Maßnahmen eine ausgezeichnete Hochspannungsdichtung erzielt. Die früher übliche Einfettung des Isolierkörpers und der damit verbundene erhebliche Wartungsaufwand können entfallen, ebenso beispielsweise ein Verkleben des Isolierkörpers auf dem Kabelendabschnitt. Alterungsbedingtes Nachgeben des Kabels, und Ablösung des Isolierkörpers von dem Kabelendabschnitt und dem Gehäuse, können ohne weitere Maßnahmen ausgeglichen werden.The invention solves this problem with the features of the independent claims. Due to the existing of an elastomeric insulating an additional sealing element between the connector parts, such as a rubber disc, dispensable. According to the invention, a pressure space is formed in the connected plug connection parts between the plug housing, the corresponding plug connection part and the cable end portion, which is substantially completely filled by the insulating body. Since the elastomer advantageously behaves like a liquid under pressure, a force exerted on the insulating body, in particular in the plug connection direction, causes a gap-free, high-voltage-tight contact pressure of the corresponding plug connection part on the insulating body and a gap-free, high-voltage-tight contact pressure of the insulating body against the jacket surface of the cable end section and advantageously also to the housing. As a result, an excellent high voltage seal is achieved between the connector parts, the insulating body, the cable end portion and the housing without further measures. The previously common greasing of the insulating and the associated considerable maintenance can be omitted, as well as, for example, a gluing of the insulating on the cable end. Aging caused by the cable, and detachment of the insulator of the cable end portion and the housing can be compensated without further action.

Der Begriff Elastomermaterial umfasst auch Materialien, die nur in bestimmten Temperaturbereichen elastisch sind, insbesondere thermoplastische Elastomere, und Materialien mit einem überwiegend elastomeren und nicht überwiegend plastischen Verhalten.The term elastomer material also includes materials which are elastic only in certain temperature ranges, in particular thermoplastic elastomers, and materials having a predominantly elastomeric and not predominantly plastic behavior.

Erfindungsgemäß ist der Isolierkörper in das Gehäuse eingefüllt, eingegossen oder eingespritzt, wodurch die im Stand der Technik bekannten Herstellungsschritte und der entsprechende Zeitaufwand erheblich reduziert werden können. Zu diesem Zweck ist in dem Gehäuse vorzugsweise eine Einfüllöffnung zum Eingießen, Einfüllen oder Einspritzen von elastomerem Material für den Isolierkörper vorgesehen.According to the invention, the insulating body is filled in the housing, cast or injected, whereby the known in the prior art manufacturing steps and the corresponding amount of time can be significantly reduced. For this purpose, in the housing is preferably a filling opening for pouring, filling or injecting elastomeric material provided for the insulating body.

Für die Druckübertragung ist es vorteilhaft, wenn das elastomere Material des Isolierkörpers ein hohes Maß an Inkompressibilität aufweist. Besonders bevorzugte Materialien sind daher Gummi oder Silikonelastomer. Letzteres hat den Vorteil, durch offenen Kaltguss mit geringem Aufwand und geringen Herstellungszeiten verarbeitbar zu sein.For the pressure transmission, it is advantageous if the elastomeric material of the insulating body has a high degree of incompressibility. Particularly preferred materials are therefore rubber or silicone elastomer. The latter has the advantage of being processable by open cold casting with little effort and low production times.

Die Erfindung wird im Folgenden anhand bevorzugter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert. Dabei zeigt:

Fig. 1
eine Querschnittsansicht eines Hochspannungs-Steckverbinders; und
Fig. 2
eine axiale Ansicht auf den Hochspannungs-Steckverbinder aus Fig. 1.
The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures. Showing:
Fig. 1
a cross-sectional view of a high voltage connector; and
Fig. 2
an axial view of the high-voltage connector off Fig. 1 ,

Der Hochspannungs-Steckverbinder 10 umfasst einen Hochspannungs-Stecker 11 und eine passende Steckdose 12. Der Steckverbinder 10 dient insbesondere zur Versorgung einer Röntgenkomponente, beispielsweise einer Röntgenröhre, mit Hochspannung insbesondere im Bereich von 60 kV bis zu 500 kV. Die Steckdose 12 ist insbesondere gehäusefest angeordnet, beispielsweise an dem Gehäuse eines Hochspannungsgenerators.The high-voltage connector 10 comprises a high-voltage plug 11 and a suitable socket 12. The connector 10 is used in particular for supplying an X-ray component, for example an X-ray tube, with high voltage, in particular in the range of 60 kV up to 500 kV. The socket 12 is in particular arranged fixed to the housing, for example on the housing of a high voltage generator.

Der Stecker 11 ist insbesondere mit einem Hochspannungskabel 13 verbunden, das in üblicher Weise Hochspannungsleiter 14, eine rohrförmige Isolierschicht 15 für die Hochspannungsisolierung der Leiter 14 nach außen, eine Leitschicht 16 zur Abschirmung und einen Schutzmantel 17 aufweist. Im Bereich des Steckers 11 sind der Mantel 17 und die Abschirmung 16 entfernt. Dieser teilweise abisolierte Kabelabschnitt, der noch die rohrförmige Isolierschicht 15 aufweist, wird als Kabelendabschnitt 18 bezeichnet.The plug 11 is in particular connected to a high-voltage cable 13, which in the usual way high-voltage conductor 14, a tubular insulating layer 15 for the high-voltage insulation of the conductors 14 to the outside, a conductive layer 16 for shielding and a protective jacket 17. In the region of the plug 11, the jacket 17 and the shield 16 are removed. This partially stripped cable section, which still has the tubular insulating layer 15 is referred to as cable end portion 18.

Der Stecker 11 weist ein festes Gehäuse 19 auf, das vorzugsweise elektrisch leitend ist und insbesondere aus Metall, beispielsweise Stahlblech, besteht. Auch ein leitfähiger Kunststoff wäre möglich. Das Gehäuse 19 ist mittels einer Verbindungseinrichtung 20 leitend mit der Kabelabschirmung 16 verbunden, um eine durchgehende Abschirmung sicherzustellen. Der Verbindungsbereich zwischen Stecker 11 und Kabel 13 ist mittels einer zugentlastung 21 gesichert. Der gesamte Stecker 11 einschließlich Gehäuse 19 und Zugentlastung 21 ist mit einem Knickschutz 22 aus einem geeigneten Material umgeben.The plug 11 has a fixed housing 19, which is preferably electrically conductive and in particular made of metal, for example steel sheet. Even a conductive plastic would be possible. The housing 19 is conductively connected to the cable shield 16 by means of a connector 20 to ensure continuous shielding. The connection area between plug 11 and cable 13 is secured by means of a strain relief 21. The entire plug 11 including the housing 19 and strain relief 21 is surrounded by a kink protection 22 made of a suitable material.

In dem Steckergehäuse 19 ist vorzugsweise ein Kontaktgehäuse 24 vorgesehen, in dem Steckkontakte 25 für die Hochspannungsleiter 14 des Steckers 11 und gegebenenfalls eine Kontaktplatine 26 angeordnet sind. Die Steckdose 12 weist ein entsprechendes Kontaktgehäuse 40 auf, in dem entsprechende Steckkontakte 41 und gegebenenfalls eine Kontaktplatine 42 angeordnet sind. Die Kontaktgehäuse 24, 40 sind vorzugsweise ineinander einsteckbar ausgebildet, wie in Fig. 1 gezeigt, und bilden somit einen einheitlichen Kontaktraum 23. In Fig. 2 sind dosenseitige Anschlüsse 27 für die Hochspannungsleiter 14 gezeigt.In the plug housing 19, a contact housing 24 is preferably provided in the plug contacts 25 for the high voltage conductor 14 of the plug 11 and optionally a contact board 26 are arranged. The socket 12 has a corresponding contact housing 40, in which corresponding plug contacts 41 and optionally a contact board 42 are arranged. The contact housing 24, 40 are preferably inserted into one another, as in Fig. 1 and thus form a uniform contact space 23. In Fig. 2 can side connections 27 are shown for the high voltage conductor 14.

In dem Raum zwischen dem Steckergehäuse 19 und dem Kabelendabschnitt 18 ist ein Isolierkörper 28 angeordnet. Der Isolierkörper 28 besteht aus einem vorzugsweise kaltvernetzten Elastomermaterial, beispielsweise Silikonelastomer oder Gummi. Der Kabelendabschnitt 18 erstreckt sich durch den gesamten Isolierkörper 28 und ist vorzugsweise an seiner Stirnseite 44 in dem Kontaktgehäuse 24 aufgenommen, wie in Fig. 1 gezeigt ist. Der Isolierkörper 28 umgibt den Kabelendabschnitt 18 an dessen Mantelfläche 46 um den gesamten Umfang herum, insbesondere ringförmig, und bildet eine durchgängige axiale Öffnung 45 für den Kabelendabschnitt 18 aus.In the space between the plug housing 19 and the cable end portion 18, an insulating body 28 is arranged. The insulating body 28 consists of a preferably cold-crosslinked elastomeric material, for example silicone elastomer or rubber. The cable end portion 18 extends through the entire Insulating body 28 and is preferably accommodated on its end face 44 in the contact housing 24, as in Fig. 1 is shown. The insulating body 28 surrounds the cable end portion 18 on its lateral surface 46 around the entire circumference around, in particular annular, and forms a continuous axial opening 45 for the cable end portion 18.

Der Isolierkörper 28 liegt vorzugsweise passgenau an der Innenseite des Gehäuses 19 an. Das Gehäuse 19 ist trichterförmig und verjüngt sich vorteilhafterweise zum Zwecke der Feldsteuerung zur Kabelseite 38 hin. Der Isolierkörper 28 ist vorzugsweise vollständig in dem Gehäuse 19 aufgenommen, d.h. dass der Isolierkörper 28 vorzugsweise kein über das Gehäuse 19 überstehendes Teil aufweist. Der Isolierkörper 28 kann aber auch über das Gehäuse überstehen, etwa wenn die Kontaktfläche 32 des Isolierkörpers 28 kegelstumpfförmig ist. Für Reparaturzwecke lässt sich das Elastomermaterial des Isolierkörpers 28 mit verhältnismäßig geringem Aufwand aus dem Gehäuse 19 entfernen.The insulating body 28 preferably fits snugly against the inside of the housing 19. The housing 19 is funnel-shaped and tapers advantageously for the purpose of field control to the cable side 38 out. The insulator 28 is preferably completely received in the housing 19, i. that the insulating body 28 preferably has no part projecting beyond the housing 19. However, the insulating body 28 may also project beyond the housing, for example when the contact surface 32 of the insulating body 28 is frustoconical. For repair purposes, the elastomeric material of the insulating body 28 can be removed from the housing 19 with relatively little effort.

Zur Herstellung des Steckers 11 wird das Kabel 13 bzw. der Kabelendabschnitt 18 durch eine auf der Kabelseite 38 des Steckers 11 angeordnete Öffnung 29 in dem Gehäuse 19, deren Innendurchmesser an den Außendurchmesser des Kabelendabschnitts 18 angepasst ist, eingeführt. Anschließend wird die auf der Kontaktseite 39 des Steckers 11 befindliche Öffnung 30 in dem Gehäuse 19 mit einem nicht gezeigten Verschlussdeckel verschlossen. Sodann wird der vorzugsweise kaltvernetzende Silikonkautschuk durch eine in dem Gehäuse 11 vorgesehene Einfüllöffnung 31 eingefüllt. Der Einfüllraum 43 wird durch das Gehäuse 19, den Kabelendabschnitt 18, das Kontaktgehäuse 24 und den Verschlussdeckel begrenzt. Durch den innenseitig ebenen Verschlussdeckel wird dabei eine ebene Kontaktfläche 32 des Isolierkörpers 28 geformt, die senkrecht zu der durch einen Doppelpfeil in Fig. 1 verdeutlichten Verbindungsrichtung 33 der Steckverbinder 10 orientiert ist.To produce the plug 11, the cable 13 or the cable end section 18 is inserted through an opening 29 arranged in the housing 19 on the cable side 38 of the plug 11, the inner diameter of which is adapted to the outer diameter of the cable end section 18. Subsequently, the located on the contact side 39 of the plug 11 opening 30 is closed in the housing 19 with a cover, not shown. The preferably cold-crosslinking silicone rubber is then introduced through a filling opening 31 provided in the housing 11. The filling space 43 is limited by the housing 19, the cable end portion 18, the contact housing 24 and the closure lid. By the inside-level closure lid while a flat contact surface 32 of the insulating body 28 is formed perpendicular to the through a Double arrow in Fig. 1 clarified connection direction 33 of the connector 10 is oriented.

An der Außenseite des Steckergehäuses 19 ist ein die kontaktseitige Öffnung 30 umgebendes, insbesondere ringförmiges Druckbeaufschlagungsmittel 34 zum Beaufschlagen des Isolierkörpers 28 mit Druck bei verbundenen Steckverbindungsteilen 11, 12 vorgesehen. Das Druckbeaufschlagungsmittel 34 besteht vorzugsweise aus einer oder mehreren, hier zwei, Tellerfedern 36, die über den Umfang verteilte Bohrungen 35 für nicht gezeigte Befestigungsmittel, insbesondere Schrauben, aufweisen.On the outer side of the plug housing 19, a contact-side opening 30 surrounding, in particular annular Druckbeaufschlagungsmittel 34 for applying the insulating body 28 with pressure at the connected connector parts 11, 12 is provided. The pressurizing means 34 preferably consists of one or more, here two, disc springs 36, which have distributed over the circumference bores 35 for fastening means, not shown, in particular screws.

Zur Montage der Steckverbinder 10 wird zunächst der Stecker 11 entlang der Verbindungsrichtung 33 in die Steckdose 12 eingesteckt, wobei die Kontaktstifte 25 des Steckers 11 und der Steckdose 12 ineinandergreifen, um die Hochspannungsverbindung herzustellen. Bei montierter Steckverbinder 10 liegt die ebene Kontaktfläche 32 des Isolierkörpers 28 an einer entsprechenden ebenen Kontaktfläche 37 der Steckdose 12 an, die zweckmäßigerweise ebenfalls senkrecht zu der Steckverbindungsrichtung 33 orientiert ist. Die Oberfläche 32 der Steckdose 12, das Gehäuse 19, die Mantelfläche 46 des Kabelendabschnitts 46 und das Kontaktgehäuse 24 bilden einen im Wesentlichen geschlossenen (abgesehen von Funktionsöffnungen wie beispielsweise der Einfüllöffnung 31) Druckraum 43.To mount the connector 10, the plug 11 is first inserted along the connecting direction 33 in the socket 12, wherein the contact pins 25 of the plug 11 and the socket 12 intermesh to produce the high voltage connection. When mounted connector 10, the flat contact surface 32 of the insulator 28 abuts against a corresponding flat contact surface 37 of the socket 12, which is expediently also oriented perpendicular to the plug connection direction 33. The surface 32 of the socket 12, the housing 19, the lateral surface 46 of the cable end portion 46 and the contact housing 24 form a substantially closed (apart from functional openings such as the filling opening 31) pressure chamber 43rd

Sodann werden die Tellerfedern 36 mittels der durch die Öffnungen 35 greifenden Befestigungsschrauben gegen die Steckdose 12 angezogen, bis die Tellerfedern 36 senkrecht stehen, wie in Fig. 1 gezeigt, und somit das Erreichen einer vorbestimmten hohen Befestigungskraft im Bereich von beispielsweise 10 kN anzeigen. Die Befestigungskraft wird von der Kontaktfläche 37. der Steckdose 12 auf die Kontaktfläche 32 des Isolierkörpers 28 übertragen. Aufgrund des hohen, von der Druckbeaufschlagungseinrichtung 34 auf den Isolierkörper 28 ausgeübten Drucks und der Elastizität des Isolierkörpers 28 wird eine hervorragende Hochspannungsdichtung zwischen dem Stecker 11 und der Steckdose 12 erreicht. Das Einlegen einer separaten Gummidichtscheibe sowie das Einbringen von Fett zwischen die Steckverbindungsteil 11, 12 ist nicht mehr erforderlich, auf eine regelmäßige Wartung der Steckverbinder 10 kann daher verzichtet werden.Then, the plate springs 36 are tightened by means of the cross through the openings 35 mounting screws against the socket 12 until the disc springs 36 are perpendicular, as in Fig. 1 shown, and thus indicate the achievement of a predetermined high fastening force in the range of, for example, 10 kN. The fastening force is from the contact surface 37th of the socket 12 on the contact surface 32 of the insulating body 28 transmitted. Due to the high pressure exerted by the pressurizing device 34 on the insulating body 28 and the elasticity of the insulating body 28, an excellent high-voltage seal between the plug 11 and the socket 12 is achieved. The insertion of a separate rubber sealing disc and the introduction of grease between the connector part 11, 12 is no longer necessary, a regular maintenance of the connector 10 can therefore be dispensed with.

Aufgrund des unter Druckbeaufschlagung flüssigkeitsähnlichen Verhaltens des Isolierkörpers 28 und des geschlossenen Druckraums 43 wird ein von der Kontaktfläche 37 der Steckdose 12 auf die Kontaktfläche 32 des Isolierkörpers 28 ausgeübter Druck von diesem übertragen und bewirkt eine Anpressung des Isolierkörpers 28 an die gesamte den Isolierkörper 28 kontaktierende Mantelfläche 46 des Kabelendabschnitts 18 und an die gesamte den Isolierkörper 28 kontaktierende Innenfläche des Gehäuses 19, so dass auch zwischen dem Isolierkörper 28 und dem Kabelendabschnitt 18 sowie zwischen dem Isolierkörper 28 und dem Gehäuse 19 eine ausgezeichnete Hochspannungsdichtung erreicht wird. Auch ein alterungsbedingtes Nachgeben des Kabelendabschnitts 18 wird ausgeglichen. Das Gehäuse 19 ist zur Aufnahme der von der Druckbeaufschlagungseinrichtung 34 ausgeübten Kräfte ausgelegt.Due to the liquid-like behavior under pressure of the insulating body 28 and the closed pressure chamber 43, a pressure exerted by the contact surface 37 of the socket 12 on the contact surface 32 of the insulator 28 pressure is transferred from this and causes a contact pressure of the insulating body 28 to the entire insulating body 28 contacting surface 46 of the cable end portion 18 and to the whole of the insulating body 28 contacting inner surface of the housing 19, so that also between the insulator 28 and the cable end portion 18 and between the insulator 28 and the housing 19 an excellent high voltage seal is achieved. An aging-conditioned yielding of the cable end portion 18 is compensated. The housing 19 is designed to receive the forces exerted by the pressurizing device 34.

Selbstverständlich kann in einer nicht gezeigten Ausführungeform der Steckverbinder 10 umgekehrt mit Einbaustecker 12 und Steckkupplung bzw. -buchse 11 ausgeführt sein.Of course, in a non-illustrated embodiment of the connector 10 can be reversed with built-in connector 12 and plug-in connector or socket 11 executed.

Claims (15)

  1. A high-voltage connector component (11) for a high-voltage cable (13), comprising an insulating body (28) of a polymer material which surrounds a cable end portion (18) of the high-voltage cable (13) on the side of the sheath, wherein the insulating body (28) received in a solid housing (19) is made of an elastomer material and the connector component (11) is formed such that, as a consequence of the connection with a corresponding connector component (12), a substantially sealed pressure chamber (43) is formed between the housing (19), the corresponding connector component (12) and the cable end portion (18), wherein the pressure chamber (43) is substantially completely filled by the insulating body (28), and the solid housing (19) is funnel-shaped, wherein it tapers towards the cable side (38) and has a contact-side opening (30) that is at least partially filled by the insulating body (28), and the insulating body (28) has, in the region of this contact-side opening (30) of the housing (19), a contact surface (32) that, upon connecting the high-voltage connector component (11) to a corresponding connector component (13), rests against a contact surface (37) of the corresponding connector component (13) in such a way that an application of pressure to the insulating body (28) via its contact surface (32) causes a gap-free, high-voltage-proof pressing of the corresponding connector component (12) against the insulating body (28), a gap-free, high-voltage-proof pressing of the insulating body (28) against the housing (19), and a gap-free, high-voltage-proof pressing of the insulating body (28) against the sheath surface (46) of the cable end portion (18), wherein the insulating body (28) is filled, poured or injected into the housing (19).
  2. The high-voltage connector component according to claim 1, wherein the elastomer material of the insulating body (28) is made of a cold-castable rubber material.
  3. The high-voltage connector component according to claim 1, wherein the elastomer material of the insulating body (28) is made of a hot-castable or injection-moldable rubber material.
  4. The high-voltage connector component according to any one of the preceding claims, wherein the cable end portion (18) still has the tube-shaped high-voltage insulation (15) of the high-voltage cable (13).
  5. The connector component according to any one of the preceding claims, wherein the insulating body (28) rests snugly against the housing (19).
  6. The connector component according to any one of the preceding claims, wherein a filler opening (31) for injecting or filling in elastomer material for the insulating body (28) is provided in the housing (19).
  7. The connector component according to any one of the preceding claims, comprising a pressure application means (34) for applying pressure to the insulating body (28) in the case of the connector components (11, 12) being connected.
  8. The connector component according to claim 7, wherein the pressure application means (34) comprises at least one disc spring (36).
  9. The connector component according to any one of the preceding claims, wherein the insulating body (28) is completely received within the housing (19).
  10. The connector component according to any one of the preceding claims, wherein the insulating body (28) substantially consists of rubber.
  11. The connector component according to any one of the claims 1 to 10, wherein the insulating body (28) substantially consists of silicone elastomer.
  12. A high-voltage connector (10) comprising a first connector component (11) according to any one of the preceding claims and a second connector component (12) cooperating therewith, characterized in that, when the connector components (11, 12) are connected in a high-voltage-protected manner, the contact surface (32) of the insulating body (28) of the first connector component (11), without a separate intermediate part, rests under pressure against the contact surface (37) of the second connector component (12).
  13. A method for producing a high-voltage connector component (11) according to any one of the claims 1 to 12, characterized in that the high-voltage cable (13) is routed through a cable-side housing opening (29) into the solid housing (19) and elastomer material for forming the insulating body (28) is filled, poured or injected into the housing (19).
  14. The method according to claim 13, wherein, prior to filling in, pouring or injecting the elastomer material, the contact-side opening (30) in the housing (19) is closed with a closing lid, whereby the contact surface (32) of the insulating body (28) is formed on the inside of the closing lid.
  15. The method according to claim 14, wherein the elastomer material is introduced into the housing (19) via a filler opening (31) in the housing (19).
EP11001204.4A 2011-02-15 2011-02-15 High voltage plug connection part for high voltage cable and method for producing same Active EP2490302B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11001204.4A EP2490302B1 (en) 2011-02-15 2011-02-15 High voltage plug connection part for high voltage cable and method for producing same
US13/372,607 US8657618B2 (en) 2011-02-15 2012-02-14 High-voltage connector component for a high-voltage cable, high-voltage connector, and method of manufacturing a high-voltage connector component
CN2012100405634A CN102646887A (en) 2011-02-15 2012-02-14 High-voltage connector component for high-voltage cable, high-voltage connector, and method for producing same

Applications Claiming Priority (1)

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EP11001204.4A EP2490302B1 (en) 2011-02-15 2011-02-15 High voltage plug connection part for high voltage cable and method for producing same

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EP2490302A1 EP2490302A1 (en) 2012-08-22
EP2490302B1 true EP2490302B1 (en) 2016-06-08

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US8657618B2 (en) 2014-02-25
EP2490302A1 (en) 2012-08-22
CN102646887A (en) 2012-08-22
US20120208386A1 (en) 2012-08-16

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