EP0536856B1 - Metal encapsulated, pressurised gas-insulated high-tension switchgear - Google Patents

Metal encapsulated, pressurised gas-insulated high-tension switchgear Download PDF

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Publication number
EP0536856B1
EP0536856B1 EP92250206A EP92250206A EP0536856B1 EP 0536856 B1 EP0536856 B1 EP 0536856B1 EP 92250206 A EP92250206 A EP 92250206A EP 92250206 A EP92250206 A EP 92250206A EP 0536856 B1 EP0536856 B1 EP 0536856B1
Authority
EP
European Patent Office
Prior art keywords
contact system
bulge
lever
encapsulation
field electrode
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 - Lifetime
Application number
EP92250206A
Other languages
German (de)
French (fr)
Other versions
EP0536856A1 (en
Inventor
Norbert Lüthy
Thomas Kelch
Jörg Gorablenkow
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
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0536856A1 publication Critical patent/EP0536856A1/en
Application granted granted Critical
Publication of EP0536856B1 publication Critical patent/EP0536856B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms

Definitions

  • the invention relates to a metal-encapsulated, compressed gas-insulated high-voltage switching device with a high-voltage contact system and a drive device, consisting of an insulating rod and a pivotally guided on the encapsulation, arranged in a bulge of the encapsulation, at ground potential, see e.g. WO 90/13902.
  • the field distribution within the encapsulation and the size of the high voltage determine the dimensions of the encapsulation.
  • Moving parts that are at ground potential or that carry high voltage must have the necessary minimum distance from the conductor carrying counter potential at all times during the movement sequence in order not to impermissibly impair the field distribution. When designing moving contact systems, this often leads to large encapsulations.
  • the drive lever embraces the insulating rod in a fork-shaped manner and is articulated in the fork region and that the field electrode in the fork region also has a passage opening for the insulating rod.
  • Figures 1 and 2 show a metal-encapsulated high-voltage switching device in the on and off position schematically, partly in section.
  • a high-voltage contact system 3, 4, 5, which can be moved by a drive device 6, is arranged in the interior 1 of an encapsulation 2 of a high-voltage switching device.
  • sulfur hexafluoride is filled in as an insulating agent under a pressure of, for example, 4 bar.
  • the contact system 3, 4, 5 consists of a stationary mating contact 3 fastened to a support insulator 7 and a slide switching element 5, which slidably guides a bypass switching element 4.
  • the bypass switching element 4 is essentially cylindrical and is arranged to be axially movable.
  • a shaft 8 of the drive device 6 is rotated clockwise. This rotary movement is transmitted to a lever 9, which is fixed in a torsionally rigid manner on the shaft 8 and at its free end 10 is pivotally connected to an insulating rod 12 via a pivot bearing 11.
  • the insulating rod 12 is in turn articulated on the side facing away from the lever 9 to the bypass switching element 4 via a rotary bearing 13.
  • the drive lever 9 is pivoted by approximately 90 degrees during a switching movement and, when the switch-on position is reached, is transferred to a position which changes the electrical field prevailing between the encapsulation 2 and the contact system 3, 4, 5.
  • the drive lever 9 has in the region of its free end 10 a molded-on field electrode 14 which shields the other parts of the drive lever 9 which project from the bulge 15 of the encapsulation 2 which receives the drive lever 9 and protrudes from the bulge 15 which receives the drive lever 9.
  • This also includes the ribs 9a provided for the power transmission of the drive lever 9 and the articulated bearing point 11.
  • the drive lever 9 is designed such that it encompasses the insulating rod 12 in the form of a lever and is articulated in the fork region with the joint bearing point 11.
  • the field electrode 14 is therefore provided in the fork area with a passage opening for the insulating rod 12.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Contacts (AREA)

Abstract

In the case of an angled interrupter for encapsulated switching installations, having a drive device for the contact system (3, 4, 5) which carries high voltage, a drive lever (9) which is at earth potential is supported in a bulge (15) in the encapsulation (2) such that it can pivot and is connected in an articulated manner to an insulating material rod (12), in order to move the contact system. In order to reduce the space requirement for the drive lever, the latter has an integrally formed field electrode (14) which screens the remaining lever parts, which project out of the bulge when the contact system is in the switched-on state. <IMAGE>

Description

Die Erfindung bezieht sich auf ein metallgekapseltes, druckgasisoliertes Hochspannungsschaltgerät mit einem Hochspannung führenden Kontaktsystem und einer Antriebsvorrichtung, bestehend aus einer Isolierstoffstange und einem schwenkbar an der Kapselung geführten, in einer Ausbuchtung der Kapselung angeordneten, auf Erdpotential liegenden Antriebshebel, siehe z.B. WO 90/13902.The invention relates to a metal-encapsulated, compressed gas-insulated high-voltage switching device with a high-voltage contact system and a drive device, consisting of an insulating rod and a pivotally guided on the encapsulation, arranged in a bulge of the encapsulation, at ground potential, see e.g. WO 90/13902.

Bei gekapselten, druckgasisolierten Hochspannungsschaltgeräten bestimmt die Feldverteilung innerhalb der Kapselung und die Größe der Hochspannung die Abmessungen der Kapselung. Bewegte, auf Erdpotential liegende oder Hochspannung führende Teile müssen von dem Gegenpotential führenden Leiter zu jeder Zeit des Bewegungsablaufs den notwendigen Mindestabstand haben, um die Feldverteilung nicht unzulässig zu beeinträchtigen. Dies führt bei der Konstruktion von bewegten Kontaktsystemen häufig zu groß dimensionierten Kapselungen.In the case of encapsulated, compressed gas-insulated high-voltage switching devices, the field distribution within the encapsulation and the size of the high voltage determine the dimensions of the encapsulation. Moving parts that are at ground potential or that carry high voltage must have the necessary minimum distance from the conductor carrying counter potential at all times during the movement sequence in order not to impermissibly impair the field distribution. When designing moving contact systems, this often leads to large encapsulations.

Eine Verringerung der räumlichen Abmessungen der Kapselung und des inneren Aufbaus bei einem Hochspannungsschaltgerät der eingangs genannten Art ergibt sich erfindungsgemäß dadurch, daß der Antriebshebel eine angeformte Feldelektrode aufweist, die die übrigen, im Einschaltzustand des Kontaktsystems aus der Ausbuchtung vorspringenden Teile des Antriebshebels abschirmt.A reduction in the spatial dimensions of the encapsulation and the internal structure in a high-voltage switching device of the type mentioned initially results from the fact that the drive lever has a molded-on field electrode which shields the other parts of the drive lever which protrude from the bulge when the contact system is switched on.

Durch Anwendung der Erfindung ergibt sich die Möglichkeit, den das Drehmoment der Antriebsvorrichtung übertragenden Hebel zum Teil in den Kapselungsinnenraum vorspringend anzuordnen und platzsparend mit geringem Gewicht zu konzipieren. Dies ergibt eine Senkung der Material- und Fertigungskosten. Wegen der durch die angeformte Feldelektrode möglichen, platzsparenden Bauweise kann auf besondere Antriebsgehäuse, die an die Kapselung des Schaltgerätes angeflanscht werden müßten, verzichtet werden.By using the invention, there is the possibility of partially projecting the lever transmitting the torque of the drive device into the interior of the encapsulation and to design it in a space-saving manner with low weight. This results in a reduction in material and manufacturing costs. Because of the space-saving design possible through the molded field electrode, special drive housings can be attached to the Encapsulation of the switching device would have to be flanged, to be dispensed with.

Bei einer vorteilhaften Ausgestaltung des erfindungsgemäßen Hochspannungsschaltgerätes ist vorgesehen, daß der Antriebshebel die Isolierstange gabelförmig umfaßt und im Gabelbereich gelenkig lagert und daß ferner die Feldelektrode im Gabelbereich eine Durchtrittsöffnung für die Isolierstange aufweist.In an advantageous embodiment of the high-voltage switching device according to the invention it is provided that the drive lever embraces the insulating rod in a fork-shaped manner and is articulated in the fork region and that the field electrode in the fork region also has a passage opening for the insulating rod.

Anhand der Zeichnung ist ein Ausführungsbeispiel eines metallgekapselten, druckgasisolierten Hochspannungsschaltgerätes nach der Erfindung beschrieben und die Wirkungsweise erläutert.An exemplary embodiment of a metal-encapsulated, compressed gas-insulated high-voltage switching device according to the invention is described and the mode of operation is explained with reference to the drawing.

Die Figuren 1 und 2 zeigen ein metallgekapseltes Hochspannungsschaltgerät in der Ein- und Ausschaltstellung schematisch, zum Teil im Schnitt.Figures 1 and 2 show a metal-encapsulated high-voltage switching device in the on and off position schematically, partly in section.

Im Innenraum 1 einer Kapselung 2 eines Hochspannungsschaltgerätes ist ein Hochspannung führendes Kontaktsystem 3, 4, 5 angeordnet, das von einer Antriebsvorrichtung 6 bewegbar ist. Im Innenraum 1 ist als Isoliermittel Schwefelhexafluorid unter einem Druck von beispielsweise 4bar eingefüllt.A high-voltage contact system 3, 4, 5, which can be moved by a drive device 6, is arranged in the interior 1 of an encapsulation 2 of a high-voltage switching device. In the interior 1, sulfur hexafluoride is filled in as an insulating agent under a pressure of, for example, 4 bar.

Das Kontaktsystem 3, 4, 5 besteht aus einem ortsfesten, an einem Stützisolator 7 befestigten Gegenkontakt 3 und einem Gleitschaltstück 5, das ein Überbrückungsschaltstück 4 verschiebbar führt. Das Überbrückungsschaltstück 4 ist im wesentlichen zylindrisch ausgeführt und axial beweglich angeordnet. Zur Überführung des Überbrückungsschaltstücks 4 aus der in Figur 1 dargestellten Ausschaltposition in die aus Figur 2 ersichtliche Einschaltposition wird eine Welle 8 der Antriebsvorrichtung 6 im Uhrzeigersinn verdreht. Diese Drehbewegung wird einem Hebel 9 übertragen, der verdrehungssteif auf der Welle 8 befestigt ist und an seinem freien Ende 10 über ein Drehlager 11 mit einer Isolierstoffstange 12 gelenkig verbunden ist. Die Isolierstoffstange 12 ist ihrerseits auf der dem Hebel 9 abgewandten Seite mit dem Überbrückungsschaltstück 4 über ein Drehlager 13 gelenkig verbunden.The contact system 3, 4, 5 consists of a stationary mating contact 3 fastened to a support insulator 7 and a slide switching element 5, which slidably guides a bypass switching element 4. The bypass switching element 4 is essentially cylindrical and is arranged to be axially movable. To transfer the bypass switching element 4 from the switch-off position shown in FIG. 1 to the switch-on position shown in FIG. 2, a shaft 8 of the drive device 6 is rotated clockwise. This rotary movement is transmitted to a lever 9, which is fixed in a torsionally rigid manner on the shaft 8 and at its free end 10 is pivotally connected to an insulating rod 12 via a pivot bearing 11. The insulating rod 12 is in turn articulated on the side facing away from the lever 9 to the bypass switching element 4 via a rotary bearing 13.

Ersichtlich wird während einer Schaltbewegung der Antriebshebel 9 um etwa 90 Grad verschwenkt und bei Erreichen der Einschaltstellung in eine Position überführt, die das zwischen der Kapselung 2 und dem Kontaktsystem 3, 4, 5 herrschende elektrische Feld verändert. Der Antriebshebel 9 weist im Bereich seines freien Endes 10 eine angeformte Feldelektrode 14 auf, die die übrigen Teile des Antriebshebels 9 die im Einschaltzustand des Kontaktsystems 3, 4, 5 aus der den Antriebshebel 9, aufnehmenden Ausbuchtung 15 der Kapselung 2 vorspringen, abschirmt. Hierzu gehören auch die zur Kraftübertragung des Antriebshebels 9 vorgesehenen Rippen 9a und die Gelenklagerstelle 11.As can be seen, the drive lever 9 is pivoted by approximately 90 degrees during a switching movement and, when the switch-on position is reached, is transferred to a position which changes the electrical field prevailing between the encapsulation 2 and the contact system 3, 4, 5. The drive lever 9 has in the region of its free end 10 a molded-on field electrode 14 which shields the other parts of the drive lever 9 which project from the bulge 15 of the encapsulation 2 which receives the drive lever 9 and protrudes from the bulge 15 which receives the drive lever 9. This also includes the ribs 9a provided for the power transmission of the drive lever 9 and the articulated bearing point 11.

Der Antriebshebel 9 ist im dargestellten Ausführungsbeispiel so ausgeführt, daß er die Isolierstange 12 gebelförmig umfaßt und im Gabelbereich mit der Gelenklagerstelle 11 gelenkig lagert. Die Feldelektrode 14 ist deshalb im Gabelbereich mit einer Durchtrittsöffnung für die Isolierstange 12 versehen.In the exemplary embodiment shown, the drive lever 9 is designed such that it encompasses the insulating rod 12 in the form of a lever and is articulated in the fork region with the joint bearing point 11. The field electrode 14 is therefore provided in the fork area with a passage opening for the insulating rod 12.

Claims (2)

  1. Metal-enclosed, pressurized-gas-insulated high-voltage switching unit having a high-voltage-carrying contact system (3, 4, 5) and an actuator device (6), comprising an insulating-material rod (12) and an actuator lever (9) which is mounted pivotably on the enclosure (2), disposed in a bulge (15) in the enclosure and at earth potential, characterized in that the actuator lever (9) has a formed-on field electrode (14) which screens those other parts (9a, 10, 11) of the actuator lever (9) which project out of the bulge (15) in the switched-on state of the contact system (3, 4, 5).
  2. High-voltage switching unit according to Claim 1, characterized in that the actuator lever (9) grips the insulating rod (12) in fork fashion and supports it in a hinged fashion in the fork region, and in that the field electrode (14) has a passage opening for the insulating rod (12) in the fork region.
EP92250206A 1991-09-30 1992-08-07 Metal encapsulated, pressurised gas-insulated high-tension switchgear Expired - Lifetime EP0536856B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9112411U DE9112411U1 (en) 1991-09-30 1991-09-30 Metal-enclosed, pressure-gas-insulated high-voltage switchgear
DE9112411U 1991-09-30

Publications (2)

Publication Number Publication Date
EP0536856A1 EP0536856A1 (en) 1993-04-14
EP0536856B1 true EP0536856B1 (en) 1995-01-18

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EP92250206A Expired - Lifetime EP0536856B1 (en) 1991-09-30 1992-08-07 Metal encapsulated, pressurised gas-insulated high-tension switchgear

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EP (1) EP0536856B1 (en)
AT (1) ATE117459T1 (en)
DE (2) DE9112411U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324850C2 (en) * 1993-07-23 1996-08-29 Heinzinger Electronic Gmbh Device for switching high voltages and / or high currents and / or high frequencies
CH694236A5 (en) * 1998-09-25 2004-09-30 Siemens Ag Encapsulated high-voltage circuit breaker having a Schaltkammergegaeuse.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724863C (en) * 1935-08-16 1942-09-08 Siemens Ag Circuit breaker
DE6609458U (en) * 1967-12-22 1972-05-25 Sachsenwerk Licht & Kraft Ag HIGH VOLTAGE CIRCUIT BREAKER.
DE3914730A1 (en) * 1989-04-28 1990-10-31 Siemens Ag METAL-ENCLOSED, GASIOLATED HIGH-VOLTAGE CIRCUIT BREAKER WITH AT LEAST TWO INTERRUPTING UNITS PER POL

Also Published As

Publication number Publication date
ATE117459T1 (en) 1995-02-15
EP0536856A1 (en) 1993-04-14
DE59201229D1 (en) 1995-03-02
DE9112411U1 (en) 1991-12-05

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