EP0210126B1 - Pièce de contact d'accouplement pour un enfichage entre deux conducteurs cylindriques d'une installation de commutation haute tension à isolation sous pression gazeuse en enceinte fermée - Google Patents

Pièce de contact d'accouplement pour un enfichage entre deux conducteurs cylindriques d'une installation de commutation haute tension à isolation sous pression gazeuse en enceinte fermée Download PDF

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Publication number
EP0210126B1
EP0210126B1 EP86730112A EP86730112A EP0210126B1 EP 0210126 B1 EP0210126 B1 EP 0210126B1 EP 86730112 A EP86730112 A EP 86730112A EP 86730112 A EP86730112 A EP 86730112A EP 0210126 B1 EP0210126 B1 EP 0210126B1
Authority
EP
European Patent Office
Prior art keywords
conductor
contact piece
coupling contact
piece according
cylindrical
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
EP86730112A
Other languages
German (de)
English (en)
Other versions
EP0210126A1 (fr
Inventor
Paul Dipl.-Ing. Oehlkers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0210126A1 publication Critical patent/EP0210126A1/fr
Application granted granted Critical
Publication of EP0210126B1 publication Critical patent/EP0210126B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals

Definitions

  • the invention relates to a coupling contact piece for a plug connection between two cylindrical conductors of an encapsulated, pressurized gas-insulated high-voltage switchgear, in which a cylindrical sleeve with elongated contact blades covers two spherical contact parts connected to the conductor ends, each of which is fastened in a recess in the conductor by means of a cylindrical projection .
  • Such a dome contact piece is known from DE-A 2 713 121. If the cylindrical conductor and the spherical contact parts are made of copper, it is customary for these dome contact pieces to solder the outer surface of the cylindrical extension de spherical contact parts to the surface of the recess in the conductor. Soldering is expensive and its quality is difficult to check.
  • the invention has for its object to achieve a perfect galvanic contact between the approach of the spherical contact parts and the conductor end with simpler means.
  • each spherical contact part is fixed by means of a press fit in the tubular end of the associated conductor in a dome contact piece of the type described in the invention.
  • This arrangement has the advantage that the outer surface of the cylindrical projection of the spherical contact parts can be used as a seat for the press fit which can be produced simply and cheaply.
  • the press fit thus results in good galvanic contact between the conductor and the spherical contact parts along the entire circumference. The quality of the press fit and thus the contact is easy to check.
  • a support ring made of impermeable material of higher mechanical strength in the area of the inner seat surface to the conductor which can be done by pressing or shrinking.
  • a correspondingly higher seat strength can be achieved in this way.
  • the assembly of the dome contact piece can be simplified according to the further invention in that the press fit is not produced by appropriate dimensioning of the seat surfaces, but is generated with the aid of a spreading device provided on the cylindrical projection.
  • This facilitates the insertion of the contact part into the tubular end of the conductor provided for the press fit.
  • the cylindrical projection and the spherical contact part have a central bore, starting from a recess of larger diameter, which is penetrated by an expansion screw, the head of which lies in the recess and a cone is screwed onto the end of which.
  • the cone is then drawn into the central bore of the contact part and expands the cylindrical projection, so that, when the screwing process is complete, the contact part is pressed inside the tubular end of the conductor.
  • the completion of the pressing process is indicated by the freedom of movement of the thread.
  • FIG. 1 shows a longitudinal section through a dome contact piece designed according to the invention.
  • Figure 2 a somewhat modified spherical contact part is also shown in longitudinal section.
  • the dome contact piece 1 for the connection of two cylindrical conductors 2 made of aluminum of a compressed gas-insulated, metal-encapsulated high-voltage switchgear comprises two spherical contact parts 3, which are connected to the ends of the conductors 2, and a cylindrical sleeve 4, which covers the spherical contact parts 3, with elongated contact lamellae 5.
  • the front outer edges 6 as well as the edges 7 next to a constriction 8 for receiving a securing spring 9 are greatly rounded, so that the cylindrical sleeve 4 also acts as a shield controlling the electrical field in the course of the conductor connection.
  • the inside diameter of the cylindrical sleeve 4 is smaller in the region of the constriction 8 than the inside diameter indicated by an arrow 10 for receiving the current contacts 5, so that a shoulder 11 is formed between the two, against which the contact blades 5 rest on one side.
  • Each contact lamella 5 is trapezoidal.
  • the pointed side 12 of the contact plate 5 forms the contact surface to the spherical contact parts 3 attached to the ends of the conductors 2 to be connected.
  • the blunt side of the contact plates 5 facing the cylindrical sleeve 4 contains a central groove 13, in each of which a leaf spring 14 is arranged , which supports the contact plate 5 with respect to the cylindrical sleeve 4 and thus causes the contact pressure of the contact plate 5.
  • the leaf springs 14 are laterally through a disc 15 in secured in the axial direction, which is fixed at some points in the cylindrical sleeve 4 by caulking.
  • the ends of the conductors 2 made of aluminum are tubular.
  • a cylindrical extension 17 of the spherical contact part 3 is inserted into the central recess 16 of the conductor 2, the outer diameter of which corresponds approximately to the inner diameter of the recess 16.
  • the spherical contact part 3 and the cylindrical extension 17 are formed in one piece and consist of a copper alloy.
  • a central recess 19 extends from the end face 18 of the spherical contact part 3, in the bottom 20 of which a central bore 21 of smaller diameter opens, which leads to the other end face 22.
  • the central bore 21 is penetrated by an expansion screw 24, the head 25 of which rests against the bottom 20 of the recess 19 and is thus located inside the spherical contact part 3.
  • a cone 26 is screwed on from the end of the expansion screw 24.
  • the expansion screw 24 with the cone 26 is already in the spherical connector 3 before it is inserted with its cylindrical extension 17 into the recess 16 of the conductor 2.
  • the shoulder 17 is provided adjacent to the spherical contact part 3 with a shoulder 27 with a larger diameter than the outer lateral surface and thus the seat surface 28 of the cylindrical shoulder 17. This shoulder 27 bears against the end face 29 of the conductor 2 and acts as a stop which determines the axial position of the spherical contact part 3.
  • FIG. 2 shows another configuration of the press fit between the spherical contact part 3 and the tubular end of the conductor 2 made of aluminum.
  • the same reference numerals are used for parts that correspond to those in FIG. 1.
  • the spherical contact part 3 is provided with a cylindrical projection 17 which projects into the recess 16 in the end of the conductor 2.
  • the cylindrical extension 17 is intended to cause a press fit in the area of the seat surface 28.
  • the inner diameter of the conductor 2 and the outer diameter of the extension 17 are dimensioned in accordance with the seat tolerances required for this.
  • the shoulder 17 is provided with knurling in the area of the seat 28. This ensures that when the cylindrical projection 17 is pressed into the recess 16 of the conductor 2 made of aluminum, the oxide layers are rubbed off both on the inner surface of the tubular aluminum conductor 2 and on the seat surface 28 of the projection 17, so that a very good galvanic connection between both parts are created.
  • the extension 17 is provided on its end face 22 with a guide part 30, the outside diameter of which is smaller than the outside diameter of the seat surface 28.
  • both the shoulder 27, which comes to rest on the end face 29 of the conductor 2, and a locking toothing 31, which lies between the shoulder 27 and the seat surface 28, are provided for axial fixing.
  • a support ring 32 made of non-permeable material of higher mechanical strength, such as. B. stainless steel, shrunk, which is arranged in the region of the inner seat 28. This allows a higher seating strength to be achieved even with a small wall thickness of the tubular end of the aluminum conductor 2.

Landscapes

  • Installation Of Bus-Bars (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (8)

1. Pièce de contact d'accouplement (1) pour une liaison par enfichage entre deux conducteurs cylindriques (2) d'une installation de distribution électrique haute tension, de type à blindage et à isolation par un gaz sous pression, dans laquelle une douille cylindrique (4) à lamelles longitudinales de contact (5) recouvre des éléments de contact sphériques (3) qui sont respectivement fixés, à l'aide d'un appendice (17) dans une cavité (16) du conducteur (2), caractérisée par le fait que l'appendice cylindrique (17) de chaque élément de contact (3) est fixé à ajustage serré dans l'extrémité tubulaire du conducteur associé (2).
2. Pièce de contact d'accouplement selon la revendication 1, caractérisée par le fait que les conducteurs (2) sont en aluminium.
3. Pièce de contact d'accouplement selon la revendication 1 ou 2, caractérisée par le fait que la surface d'ajustage (28) de l'ajustage serré est pourvue, sur l'appendice cylindrique (17), d'un moletage.
4. Pièce de contact d'accouplement selon la revendication 1, 2 ou 3, caractérisée par le fait qu'entre la surface d'ajustage (28) et la surface frontale (29) du conducteur (2) est prévue und denture de blocage (31).
5. Pièce de contact d'accouplement selon la revendication 1, 2 ou 3, caractérisée par le fait que sur le conducteur (2) est montée, dans la zone de la surface d'ajustage intérieur (28), une bague d'appui (32) faite avec un matériau non perméable et possédant une résistance mécanique élevée.
6. Pièce de contact d'accouplement selon la revendication 1 ou 2, caractérisée par le fait que l'ajustage serré est produit à l'aide d'un dispositif à expansion qui est prévu sur l'appendice cylindrique (17).
7. Pièce de contact d'accouplement selon la revendication 6, caractérisée par le fait que l'appendice cylindrique et l'élément de contact sphérique (3) comportent un perçage médian (21) issu d'une cavité (19) de plus grand diamètre, lequel perçage médian est traversé par une vis d'expansion (24), dont la tête (25) se situe dans la cavité (19) et sur l'autre extrémité de laquelle est vissé un cône (26).
8. Pièce de contact d'accouplement selon la revendication 1, 2, 3 ou 6, caractéirsée par le fait qu'il est prévu, sur l'appendice cylindrique (17), dans le voisinage de l'élément de contact sphérique (3), un talon (27) ayant un diamètre qui est supérieur à la surface d'ajustage (28) et qui porte contre la surface frontale (29) du conducteur (2).
EP86730112A 1985-07-25 1986-07-16 Pièce de contact d'accouplement pour un enfichage entre deux conducteurs cylindriques d'une installation de commutation haute tension à isolation sous pression gazeuse en enceinte fermée Expired EP0210126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853526918 DE3526918A1 (de) 1985-07-25 1985-07-25 Kuppelkontaktstueck fuer eine steckverbindung zwischen zwei zylindrischen leitern einer gekapselten, druckgasisolierten hochspannungsschaltanlage
DE3526918 1985-07-25

Publications (2)

Publication Number Publication Date
EP0210126A1 EP0210126A1 (fr) 1987-01-28
EP0210126B1 true EP0210126B1 (fr) 1989-06-28

Family

ID=6276933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730112A Expired EP0210126B1 (fr) 1985-07-25 1986-07-16 Pièce de contact d'accouplement pour un enfichage entre deux conducteurs cylindriques d'une installation de commutation haute tension à isolation sous pression gazeuse en enceinte fermée

Country Status (3)

Country Link
EP (1) EP0210126B1 (fr)
JP (1) JPS6231311A (fr)
DE (2) DE3526918A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662846B1 (fr) * 1990-06-05 1992-08-28 Materiel Electr Soc Ind Connecteur pour la jonction de conducteurs electriques, notamment en reseau souterrain.
DE19815536C1 (de) * 1998-03-31 1999-07-29 Siemens Ag Steckverbindung für Phasenleiterstücke einer gekapselten Hochspannungsschaltanlage
DE102008034822A1 (de) * 2008-07-23 2010-01-28 Siemens Aktiengesellschaft Kuppelkontaktstück
DE102011005700A1 (de) * 2011-03-17 2012-09-20 Siemens Aktiengesellschaft Elektrische Kontaktanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1706973A (en) * 1926-06-02 1929-03-26 American Lurgi Corp Connecter for hollow electrical conductors or tubes
DE1160914B (de) * 1961-11-24 1964-01-09 Siemens Ag Kuppelkontaktstueck
DE2713121C3 (de) * 1977-03-22 1981-02-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Kuppelkontaktstück
DE3203106C2 (de) * 1982-01-30 1990-03-08 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Anordnung zum Verbinden zweier Hohlleiter

Also Published As

Publication number Publication date
DE3664177D1 (en) 1989-08-03
JPS6231311A (ja) 1987-02-10
DE3526918A1 (de) 1987-01-29
EP0210126A1 (fr) 1987-01-28

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