EP0009623B1 - High voltage feedthrough - Google Patents

High voltage feedthrough Download PDF

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Publication number
EP0009623B1
EP0009623B1 EP79103200A EP79103200A EP0009623B1 EP 0009623 B1 EP0009623 B1 EP 0009623B1 EP 79103200 A EP79103200 A EP 79103200A EP 79103200 A EP79103200 A EP 79103200A EP 0009623 B1 EP0009623 B1 EP 0009623B1
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EP
European Patent Office
Prior art keywords
voltage bushing
rings
inserts
cone
shaped part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79103200A
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German (de)
French (fr)
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EP0009623A1 (en
Inventor
Manfred Dr. Weniger
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Siemens AG
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Siemens AG
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6051259&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0009623(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT79103200T priority Critical patent/ATE1533T1/en
Publication of EP0009623A1 publication Critical patent/EP0009623A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • the invention is based on a high-voltage bushing with at least one conical part, which consists of a wound insulating material web.
  • Such a high-voltage bushing gives rise to improvements in terms of its mechanical strength, which is usually not very large.
  • the invention is therefore based on the object of proposing a high-voltage bushing which is distinguished by a high mechanical strength, the high mechanical strength should be achievable with comparatively little production effort.
  • a major advantage of the high-voltage bushing according to the invention is that by applying the rings or short hoses made of shrink material to their conical part, they obtain a relatively high mechanical strength, which advantageously also leads to an increase in the electrical strength.
  • the high mechanical strength is only achieved in a production-technically advantageous manner by applying rings or hoses made of shrink material, which shrink due to local heat treatment and thereby exert a relatively high mechanical strength on the windings from the insulating material web.
  • the high-voltage bushing according to the invention is particularly advantageous if it is provided with embedded conductive inserts; If in this case the rings or hoses are advantageously located at the locations of the conductive inserts on these or on the cone-shaped part, then the shrink pressure of the rings or hoses on the winding from the insulating material web, which is generated as a result of the heat treatment, becomes precisely at the locations a high pressure is exerted on the inserted inserts, which fixes the inserts in the predetermined position, so that the inserts cannot move within the high-voltage bushing even during transport, and thus perfect capacitive control is maintained.
  • the high-voltage bushing - as known per se has step-shaped shoulders on its conical part and if the rings or hoses are applied to the step-like steps.
  • the rings or hoses shrink as a result of the heat treatment, the shrink pressure is then fully transferred to the winding from the insulating material web, and the rings or hoses cannot slide sideways on the conical part of the high-voltage bushing and the windings cannot be displaced from the insulating material web.
  • the figure shows in section a conical part of an embodiment of the high-voltage bushing according to the invention.
  • the high-voltage bushing 1 contains a tube 2, which is expediently a metal tube.
  • the insulating material web 3 which is preferably a plastic film, is wound onto this metal tube.
  • the width of the insulating material sheet 3 decreases correspondingly with the high-voltage bushing 1 growing radially. Appropriate dimensioning of the insulating material web 3 ensures that the conical part 4 has step-shaped shoulders 5, 6 and 8.
  • conductive inserts 9, 10, 11 and 12 are also wrapped in order to achieve a capacitive control.
  • the inserts 9 to 12 can consist of metal foils.
  • Hoses 13, 14, 15 and 16 made of shrink material are applied to the step-shaped heels 5 to 8.
  • the hoses 13 to 16 are subjected to a heat treatment after their application and thereby shrink. In doing so, they exert a pressure in the radial direction, as a result of which the high-voltage bushing 1 or its conical part 4 is strongly compressed precisely at the locations of the wrapped metal foils (inserts 9 to 12); Due to the high surface pressure, the inserts 9 to 12 are held firmly in their position. At the same time, the mechanical strength of the entire high-voltage bushing 1 is increased and, in addition, protection is provided for the edges 17 of the inserts 9 to 12.
  • the rings or hoses made of shrink material can rest directly on the conductive inserts and can be completely or partially covered by the insulating material.
  • the invention proposes a high-voltage bushing which is distinguished by a relatively high strength and which, in the case of embedded conductive inserts, ensures that these inserts are fixed in their predetermined position.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

1. A high-voltage bushing which comprises at least one cone-shaped part (4) which consists of a winding of insulating material characterized in that rings or short tubes (13 to 16) which are made of shrinkable material are arranged outside of the cone-shaped part (4) or in its outer region.

Description

Die Erfindung geht von einer Hochspannungsdurchführung mit mindestens einem konusförmigen Teil aus, die aus einer gewickelten Isolierstoffbahn besteht.The invention is based on a high-voltage bushing with at least one conical part, which consists of a wound insulating material web.

Bei einer bekannten Hochspannungsdurchführung dieser Art («CIGRE»-Bericht 15-02, 1972, Seiten 6 und 7) ist zur Herstellung der Durchführung eine Kunststoffolie als Isolierstoffbahn verwendet. Die Kunststoffolie ist dabei ohne Anwendung zusätzlicher Massnahmen, wenn man von dem Einbringen leitender Beläge zur kapazitiven Steuerung absieht, gewickelt, wobei sie aufgrund abnehmender Breite eine Hochspannungsdurchführung bildet, die zwei konusförmige Teile aufweist.In a known high-voltage bushing of this type (“CIGRE” report 15-02, 1972, pages 6 and 7), a plastic film is used as the insulating material web to produce the bushing. The plastic film is wrapped without the use of additional measures, apart from the introduction of conductive coatings for capacitive control, whereby due to the decreasing width it forms a high-voltage bushing that has two conical parts.

Anlass zu Verbesserungen gibt eine solche Hochspannungsdurchführung hinsichtlich ihrer mechanischen Festigkeit, die meist nicht sehr gross ist. Der Erfindung liegt daher die Aufgabe zugrunde, eine Hochspannungsdurchführung vorzuschlagen, die sich durch eine hohe mechanische Festigkeit auszeichnet, wobei die hohe mechanische Festigkeit mit vergleichsweise geringem Fertigungsaufwand erreichbar sein soll.Such a high-voltage bushing gives rise to improvements in terms of its mechanical strength, which is usually not very large. The invention is therefore based on the object of proposing a high-voltage bushing which is distinguished by a high mechanical strength, the high mechanical strength should be achievable with comparatively little production effort.

Zur Lösung dieser Aufgabe befinden sich bei einer Hochspannungsdurchführung der eingangs angegebenen Art erfindungsgemäss aussen auf dem konusförmigen Teil oder in seinem äusseren Bereich Ringe oder kurze Schläuche aus Schrumpf-Material.To solve this problem, according to the invention, in a high-voltage bushing of the type specified at the outset, there are rings or short hoses made of shrink material on the cone-shaped part or in its outer region.

Ein wesentlicher Vorteil der erfindungsgemässen Hochspannungsdurchführung besteht darin, dass sie durch Aufbringen der Ringe oder kurzen Schläuche aus Schrumpf-Material auf ihren konusförmigen Teil eine relativ hohe mechanische Festigkeit erhält, die vorteilhafterweise auch zu einer Erhöhung der elektrischen Festigkeit führt. Dabei ist die hohe mechanische Festigkeit in fertigungstechnisch günstiger Weise nur dadurch erreicht, dass Ringe oder Schläuche aus Schrumpf-Material aufgebracht werden, die durch eine lokale Wärmebehandlung schrumpfen und dadurch einen die relativ hohe mechanische Festigkeit hervorrufenden Druck auf die Windungen aus der Isolierstoffbahn ausüben.A major advantage of the high-voltage bushing according to the invention is that by applying the rings or short hoses made of shrink material to their conical part, they obtain a relatively high mechanical strength, which advantageously also leads to an increase in the electrical strength. The high mechanical strength is only achieved in a production-technically advantageous manner by applying rings or hoses made of shrink material, which shrink due to local heat treatment and thereby exert a relatively high mechanical strength on the windings from the insulating material web.

Besonders vorteilhaft ist die erfindungsgemässe Hochspannungsdurchführung dann, wenn sie mit eingebetteten leitenden Einlagen versehen ist; befinden sich nämlich in diesem Fall in vorteilhafter Weise die Ringe oder Schläuche jeweils an den Stellen der leitenden Einlagen auf diesen oder auf dem konusförmigen Teil, dann wird durch den infolge Wärmebehandlung erzeugten Schrumpfdruck der Ringe oder Schläuche auf den Wickel aus der Isolierstoffbahn gerade an den Stellen der eingebrachten Einlagen ein hoher Druck ausgeübt, der die Einlagen in der vorbestimmten Lage fixiert, so dass sich auch während des Transportes die Einlagen innerhalb der Hochspannungsdurchführung nicht verschieben können und somit eine einwandfreie kapazitive Steuerung erhalten bleibt. Dies gilt vor allem dann, wenn als Isolierstoffbahn eine Kunststoffolie verwendet wird, die in der Regel eine verhältnismässig glatte Oberfläche aufweist; ohne die erfindungsgemäss vorgesehene Massnahme liessen sich die Einlagen nicht mit Sicherheit an den vorgegebenen Stellen im Wickel halten. Durch die Anbringung der Ringe oder Schläuche ist ausserdem sichergestellt, dass die aussenliegenden Ränder der Metallfolien mechanisch geschützt sind.The high-voltage bushing according to the invention is particularly advantageous if it is provided with embedded conductive inserts; If in this case the rings or hoses are advantageously located at the locations of the conductive inserts on these or on the cone-shaped part, then the shrink pressure of the rings or hoses on the winding from the insulating material web, which is generated as a result of the heat treatment, becomes precisely at the locations a high pressure is exerted on the inserted inserts, which fixes the inserts in the predetermined position, so that the inserts cannot move within the high-voltage bushing even during transport, and thus perfect capacitive control is maintained. This is especially true when a plastic film is used as the insulating sheet, which usually has a relatively smooth surface; Without the measure provided according to the invention, the inserts could not be held securely at the predetermined locations in the winding. The attachment of the rings or hoses also ensures that the outer edges of the metal foils are mechanically protected.

Als besonders vorteilhaft wird es angesehen, wenn die Hochspannungsdurchführung - wie an sich bekannt (vgl. z. B. DE-AS 2330665) - an ihrem konusförmigen Teil treppenförmige Absätze aufweist und wenn die Ringe oder Schläuche auf die treppenförmigen Absätze aufgebracht sind. Bei der Schrumpfung der Ringe oder Schläuche infolge Wärmebehandlung wird dann der Schrumpfdruck voll auf den Wickel aus der Isolierstoffbahn übertragen, und es kann kein seitliches Abgleiten der Ringe oder Schläuche auf dem konusförmigen Teil der Hochspannungsdurchführung und kein Verschieben der Windungen aus der Isolierstoffbahn eintreten.It is considered to be particularly advantageous if the high-voltage bushing - as known per se (see, for example, DE-AS 2330665) - has step-shaped shoulders on its conical part and if the rings or hoses are applied to the step-like steps. When the rings or hoses shrink as a result of the heat treatment, the shrink pressure is then fully transferred to the winding from the insulating material web, and the rings or hoses cannot slide sideways on the conical part of the high-voltage bushing and the windings cannot be displaced from the insulating material web.

Zur Erläuterung der Erfindung ist in der Figur im Schnitt ein konusförmiger Teil eines Ausführungsbeispiels der erfindungsgemäsen Hochspannungsdurchführung gezeigt.To explain the invention, the figure shows in section a conical part of an embodiment of the high-voltage bushing according to the invention.

Die Hochspannungsdurchführung 1 enthält ein Rohr 2, bei dem es sich zweckmässigerweise um ein Metallrohr handelt. Auf dieses Metallrohr ist die Isolierstoffbahn 3, die vorzugsweise eine Kunststoffolie ist, aufgewickelt. Zur Erzielung eines konusförmigen Teils 4 nimmt die Isolierstoffbahn 3 mit radial anwachsender Hochspannungsdurchführung 1 in ihrer Breite entsprechend ab. Dabei ist durch entsprechende Bemessung der Isolierstoffbahn 3 dafür gesorgt, dass der konusförmige Teil 4 trppenförmige Absätze 5, 6, und 8 aufweist.The high-voltage bushing 1 contains a tube 2, which is expediently a metal tube. The insulating material web 3, which is preferably a plastic film, is wound onto this metal tube. To achieve a conical part 4, the width of the insulating material sheet 3 decreases correspondingly with the high-voltage bushing 1 growing radially. Appropriate dimensioning of the insulating material web 3 ensures that the conical part 4 has step-shaped shoulders 5, 6 and 8.

Beim Wickeln der Hochspannungsdurchführung 1 sind zur Erzielung einer kapazitiven Steuerung leitende Einlagen 9, 10, 11 und 12 miteingewickelt. Die Einlagen 9 bis 12 können aus Metallfolien bestehen.When winding the high-voltage bushing 1, conductive inserts 9, 10, 11 and 12 are also wrapped in order to achieve a capacitive control. The inserts 9 to 12 can consist of metal foils.

Auf die treppenförmigen Absätze 5 bis 8 sind Schläuche 13, 14, 15 und 16 aus Schrumpf-Material aufgebracht. Die Schläuche 13 bis 16 sind nach ihrer Aufbringung einer Wärmebehandlung unterzogen und schrumpfen dadurch. Dabei üben sie einen Druck in radialer Richtung aus, wodurch die Hochspannungsdurchführung 1 bzw. ihr konusförmiger Teil 4 gerade an den Stellen der eingewickelten Metallfolien (Einlagen 9 bis 12) stark zusammengedrückt wird; aufgrund der hohen Flächenpressung werden die Einlagen 9 bis 12 fest in ihrer Lage gehalten. Gleichzeitig wird die mechanische Festigkeit der gesamten Hochspannungsdurchführung 1 erhöht und ausserdem ein Schutz für die Ränder 17 der Einlagen 9 bis 12 bewirkt.Hoses 13, 14, 15 and 16 made of shrink material are applied to the step-shaped heels 5 to 8. The hoses 13 to 16 are subjected to a heat treatment after their application and thereby shrink. In doing so, they exert a pressure in the radial direction, as a result of which the high-voltage bushing 1 or its conical part 4 is strongly compressed precisely at the locations of the wrapped metal foils (inserts 9 to 12); Due to the high surface pressure, the inserts 9 to 12 are held firmly in their position. At the same time, the mechanical strength of the entire high-voltage bushing 1 is increased and, in addition, protection is provided for the edges 17 of the inserts 9 to 12.

In Abweichung von dem dargestellten Ausführungsbeispiel können die Ringe oder Schläuche aus Schrumpf-Material direkt auf den leitenden Einlagen aufliegen und ganz oder teilweise durch die Isolierstoffbahn abgedeckt sein.In deviation from the version shown Example, the rings or hoses made of shrink material can rest directly on the conductive inserts and can be completely or partially covered by the insulating material.

Mit der Erfindung wird eine Hochspannungsdurchführung vorgeschlagen, die sich durch eine relativ hohe Festigkeit auszeichnet und im Falle eingebetteter leitender Einlagen eine Fixierung dieser Einlagen in ihrer vorbestimmten Lage gewährleistet.The invention proposes a high-voltage bushing which is distinguished by a relatively high strength and which, in the case of embedded conductive inserts, ensures that these inserts are fixed in their predetermined position.

Claims (3)

1. A high-voltage bushing which comprises at least one cone-shaped part (4) which consists of a winding of insulating material characterised in that rings or short tubes (13 to 16) which are made of shrinkable material are arranged outside of the cone-shaped part (4) or in its outer region.
2. A high-voltage bushing as claimed in Claim 1 provided with embedded conducting inserts (9 to 12), characterised in that the rings or tubes (13 to 16) are respectively arranged at the locations of the conducting inserts (9 to 12) on the latter or outside on the cone-shaped part (4).
3. A high-voltage bushing as claimed in Claim 1 or Claim 2, characterised in that the cone-shaped part (4) has stepped shoulders (5 to 8), and that the rings or tubes (13 to 16) are mounted on the stepped shoulders (5to 8).
EP79103200A 1978-09-29 1979-08-29 High voltage feedthrough Expired EP0009623B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103200T ATE1533T1 (en) 1978-09-29 1979-08-29 HIGH VOLTAGE JACKET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782843079 DE2843079A1 (en) 1978-09-29 1978-09-29 HIGH VOLTAGE PERFORMANCE
DE2843079 1978-09-29

Publications (2)

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EP0009623A1 EP0009623A1 (en) 1980-04-16
EP0009623B1 true EP0009623B1 (en) 1982-09-08

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ID=6051259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103200A Expired EP0009623B1 (en) 1978-09-29 1979-08-29 High voltage feedthrough

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EP (1) EP0009623B1 (en)
JP (1) JPS5546492A (en)
AT (1) ATE1533T1 (en)
DE (1) DE2843079A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244957A1 (en) * 1986-04-08 1987-11-11 Raychem Gmbh Electrical apparatus for controlling electrical stress

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO316097B1 (en) * 2001-09-26 2003-12-08 Abb Offshore Systems As Electric high voltage feed-through

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1691356A (en) * 1923-09-13 1928-11-13 Morrison Montford Insulating bushings and method of making the same
DE1100745B (en) * 1959-08-12 1961-03-02 Comp Generale Electricite In vertical or approximately vertical position standing bushing for electrical high voltage cables
GB979833A (en) * 1963-07-26 1965-01-06 Standard Telephones Cables Ltd Electric cable joints
GB1091135A (en) * 1964-10-05 1967-11-15 Sumitomo Electric Industries Improvements in or relating to the moulding of stress cones or condenser bushings on cables
DE2142283B2 (en) * 1971-08-24 1972-12-07 Feiten & Guilleaume Kabelwerke AG, 5000 Köln CABLE END CLOSURE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244957A1 (en) * 1986-04-08 1987-11-11 Raychem Gmbh Electrical apparatus for controlling electrical stress
US4847450A (en) * 1986-04-08 1989-07-11 Raychem Gmbh Stress graded electrical bushing and method of making same

Also Published As

Publication number Publication date
JPS5546492A (en) 1980-04-01
EP0009623A1 (en) 1980-04-16
DE2843079A1 (en) 1980-04-10
ATE1533T1 (en) 1982-09-15

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