EP0809269A2 - High voltage circuit breaker with two driven switch contact pieces - Google Patents

High voltage circuit breaker with two driven switch contact pieces Download PDF

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Publication number
EP0809269A2
EP0809269A2 EP97250161A EP97250161A EP0809269A2 EP 0809269 A2 EP0809269 A2 EP 0809269A2 EP 97250161 A EP97250161 A EP 97250161A EP 97250161 A EP97250161 A EP 97250161A EP 0809269 A2 EP0809269 A2 EP 0809269A2
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EP
European Patent Office
Prior art keywords
arcing contact
contact piece
contact pieces
drive element
circuit breaker
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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.)
Granted
Application number
EP97250161A
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German (de)
French (fr)
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EP0809269A3 (en
EP0809269B1 (en
Inventor
Volker Lehmann
Heiner Marin
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Siemens AG
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Siemens AG
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Application filed by Siemens AG filed Critical Siemens AG
Priority to DE29724842U priority Critical patent/DE29724842U1/en
Publication of EP0809269A2 publication Critical patent/EP0809269A2/en
Publication of EP0809269A3 publication Critical patent/EP0809269A3/en
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Publication of EP0809269B1 publication Critical patent/EP0809269B1/en
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Classifications

    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
    • 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
    • H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle

Definitions

  • the invention relates to a high-voltage circuit breaker with a first and a second, coaxially opposing arcing contact piece, between which, if necessary, a switching arc burns during a switch-off process and which can be driven in opposite directions in the course of a switch-off process by a common drive, the drive movement being effected by a first drive element is transmitted to the first arcing contact piece and by a second drive element by means of a deflecting gear to the second arcing contact piece and with two continuous current contact pieces which coaxially surround the arcing contact pieces and with an insulating nozzle which is fixedly connected to the first arcing contact piece and which blows the switching arc Extinguishing gas is used.
  • the present invention has for its object to provide a high-voltage circuit breaker of the type mentioned, which is structurally simple and inexpensive and requires the smallest possible housing size.
  • the second drive element is fastened to the insulating material nozzle and is driven by means of it, and is arranged radially within the continuous current contact pieces.
  • the second drive element is fastened to the insulating material nozzle and the insulating material nozzle itself thus transmits the driving force to the second arcing contact
  • the second drive element can be kept relatively short.
  • the first drive element is driven by a force accumulator (not shown in detail) and in turn drives the first arcing contact piece with the insulating material nozzle.
  • the insulating material in turn drives the second drive element, which transmits the drive movement to the reversing gear arranged behind the second arcing contact piece.
  • the drive movement is then transmitted to the second arcing contact piece by means of the deflection gear.
  • the second drive element is arranged radially within the continuous current contact pieces, and not, as in the prior art parallel to the first drive element or the insulating nozzle radially outside, the size of the interrupter unit of the high-voltage circuit breaker according to the invention is kept small in the radial direction.
  • the second drive element for example in the form of a drive rod, is coupled directly to the insulating nozzle and not to the first drive element, the necessary overall length of the second drive element and thus also the mass to be accelerated during the switching process is reduced.
  • the size of such a high-voltage circuit breaker is exactly the same as the size of a corresponding switch in which only one of the arcing contact pieces can be driven and in which the second drive element and the deflection gear are missing.
  • the same insulating material housing for example porcelain housing, can thus be used for both variants of the switch.
  • the second drive element can come into contact with the arc or with hot quenching gas, it should be made of an arc-resistant material, for example PTFE.
  • An advantageous embodiment of the invention provides that a field electrode surrounding the second arcing contact piece is coupled to the deflecting gear and can be moved in the opposite direction to the second arcing contact piece in the course of a switching movement.
  • the field electrode can be coupled to the deflection gear without major additional mechanical outlay are pushed forward during the switch-off process, when both arcing contact pieces are pulled apart, in order to achieve an equalization of the electrical field in the region of the separation distance between the arcing contact pieces. It can be provided that the deflection gear is designed so that the movement of the field electrode only begins shortly before the end of the switch-off movement.
  • a further advantageous embodiment of the invention provides that the deflection gear has a fixedly pivotable two-armed lever to which the second drive element, the second arcing contact piece and the field electrode are coupled.
  • the reversing gear can be implemented in the simplest and most reliable manner.
  • the fact that the deflection gear is arranged from the first arcing contact piece behind the second arcing contact piece ensures that both arcing contact pieces are driven by means of a pulling motion during the switching-off process, in which extremely high acceleration is important.
  • a suitable acceleration profile of the second arcing contact piece can be realized during the switch-off movement.
  • the second drive element and the second arcing contact piece are advantageously coupled to the lever by means of link guides, so that the radial deflection of these elements is kept as low as possible during the pivoting movement of the lever. An overstroke of the drive can also be compensated for by the link guides.
  • the figure shows schematically in a longitudinal section an interrupter unit of a high-voltage circuit breaker.
  • the high-voltage circuit breaker shown has two arcing contact pieces 1, 2 which are coaxially opposed to one another.
  • the illustration shows a state during the switching movement shortly before the switch-off state is reached.
  • the arcing contact pieces 1, 2 are already separated from one another and an arc is burning between them.
  • the first arcing contact piece 1 is moved in the direction of the arrow 12, the second arcing contact piece 2 in the direction of the arrow 13.
  • the first arcing contact piece 1 is hollow and receives the pin-shaped second arcing contact piece 2 in the switched-on state.
  • the first arcing contact piece 1 is coupled to a contact tube 4, which also serves as the first drive element and transmits the drive movement from an energy store, not shown.
  • the first arcing contact 1 carries a multi-part insulating nozzle 9, which surrounds the second arcing contact 2 in the switched-on state and conducts the quenching gas heated by the arc 3 during the switch-off process.
  • hot quenching gas can flow through a channel 14 into a heating chamber 15, from which it then flows back through the same channel 14 at a suitable time, shortly after the zero current crossing of the alternating current, in order to blow the arc 3 and accelerate the reconsolidation of the switching path .
  • the free end of the insulating nozzle 9 is guided in a tube 10 which simultaneously forms a field electrode.
  • a drive element 5 is attached in the form of a rod made of PTFE.
  • a ring 16 is first attached to the nozzle, with which one end of the second drive element 5 is screwed.
  • the two-armed lever 11 is actuated by the second drive element 5.
  • the rod 5 is pulled in the direction of the arrow 17, as a result of which the lever 11 is pivoted clockwise.
  • a pulling movement in the direction of arrow 13 is transmitted to the second arcing contact piece 2.
  • the field electrode 10 is moved in the direction of the arrow 19 via a rod 18 which is likewise coupled to the lever 11.
  • the second arcing contact piece 2 is guided and contacted in the axial direction within the field electrode 10 by means of a sliding contact guide 20.
  • the field electrode 10 is in turn guided and contacted in circumferential sliding contacts 21, 22 of the continuous current contact piece 8.
  • the lever 11 of the deflection gear 6 is pivotally mounted in a schematically illustrated manner about the stationary axis 23.
  • the axis 23 can for example be fastened in the support tube 24 which carries the continuous current contact piece 8.

Abstract

The switch has two mutually coaxially opposed light arc contact pieces (1,2), between which a light arc (3) burns when the switch is switched off, and which are driven in opposite directions by two drive elements (4,5) during switching off. Two permanent current contact pieces (7,8) enclose the light arc contact pieces coaxially. An insulating nozzle (9) attached to the first light arc contact piece is used to blow quenching gas onto the light arc. The second drive element (5) is attached to the insulating nozzle and is driven with it as well as being arranged radially inside the permanent current contact pieces. A deflection transmission for the second drive element is coupled to a field electrode enclosing the second light arc contact piece.

Description

Die Erfindung bezieht sich auf einen Hochspannungs-Leistungsschalter mit einem ersten und einem zweiten, einander koaxial gegenüberstehenden Lichtbogenkontaktstück, zwischen denen bei einem Ausschaltvorgang gegebenenfalls ein Schaltlichtbogen brennt und die im Zuge eines Ausschaltvorganges durch einen gemeinsamen Antrieb in entgegengesetzten Richtungen antreibbar sind, wobei die Antriebsbewegung durch ein erstes Antriebselement auf das erste Lichtbogenkontaktstück und durch ein zweites Antriebselement mittels eines Umlenkgetriebes auf das zweite Lichtbogenkontaktstück übertragen wird und mit zwei die Lichtbogenkontaktstücke koaxial umgebenden Dauerstromkontaktstücken sowie mit einer Isolierstoffdüse, die mit dem ersten Lichtbogenkontaktstück fest verbunden ist und die der Beblasung des Schaltlichtbogens mit einem Löschgas dient.The invention relates to a high-voltage circuit breaker with a first and a second, coaxially opposing arcing contact piece, between which, if necessary, a switching arc burns during a switch-off process and which can be driven in opposite directions in the course of a switch-off process by a common drive, the drive movement being effected by a first drive element is transmitted to the first arcing contact piece and by a second drive element by means of a deflecting gear to the second arcing contact piece and with two continuous current contact pieces which coaxially surround the arcing contact pieces and with an insulating nozzle which is fixedly connected to the first arcing contact piece and which blows the switching arc Extinguishing gas is used.

Ein derartiger Hochspannungs-Leistungsschalter ist beispielsweise in der französischen Patentanmeldung FR 2 491 675 beschrieben. Dort ist auch ausgeführt, daß durch die Aufteilung der Schaltbewegung auf zwei angetriebene Schaltkontaktstücke bei gleicher Antriebsenergie eine höhere Kontakttrennungsgeschwindigkeit erreicht wird, als wenn nur ein einziger Kontakt angetrieben wäre.Such a high-voltage circuit breaker is described, for example, in French patent application FR 2 491 675. There is also stated that by dividing the switching movement into two driven switching contact pieces with the same drive energy, a higher contact separation speed is achieved than if only a single contact were driven.

Auch aus dem Fachartikel IEEE Transactions on Power Delivery, Vol. 8, No 3, July 1993, "DEVELOPMENT OF 550 kV1-BREAK GCB (PART II)" ist ein Hochspannungs-Leistungsschalter mit zwei antreibbaren Schaltkontaktstücken bekannt, wobei die Antriebsbewegung auf eines der Schaltkontaktstücke direkt und auf das andere Schaltkontaktstück mittels eines Umlenkgetriebes übertragen wird.Also from the technical article IEEE Transactions on Power Delivery, Vol. 8, No 3, July 1993, "DEVELOPMENT OF 550 kV1-BREAK GCB (PART II)", a high-voltage circuit breaker with two drivable switching contact pieces is known, the drive movement being one of the Switch contact pieces are transferred directly and to the other switch contact piece by means of a reversing gear.

Beim Stand der Technik ergibt sich, wie insbesondere aus der genannten französischen Patentanmeldung hervorgeht, daß die Antriebselemente zum Antrieb beider Schaltkontaktstücke sowie das Umlenkgetriebe regelmäßig viel Platz beanspruchen. Insbesondere bei der Konstruktion gemäß FR 2 491 675 wird deutlich, daß durch diese Konstruktion der Durchmesser der Unterbrechereinheit groß wird, so daß ein entsprechend großes Isolierstoffgehause zur Aufnahme der Unterbrechereinheit notwendig ist.The state of the art, as can be seen in particular from the aforementioned French patent application, shows that the drive elements for driving both switch contact pieces and the deflection gear regularly take up a lot of space. Especially in the construction according to FR 2 491 675 it is clear that this construction makes the diameter of the interrupter unit large, so that a correspondingly large insulating material housing is necessary to accommodate the interrupter unit.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Hochspannungs-Leistungsschalter der eingangs genannten Art zu schaffen, der konstruktiv einfach aufgebaut und kostengünstig ist und eine möglichst geringe Gehäusegröße beansprucht.The present invention has for its object to provide a high-voltage circuit breaker of the type mentioned, which is structurally simple and inexpensive and requires the smallest possible housing size.

Die Aufgabe wird erfindungsgemäß dadurch gelost, daß das zweite Antriebselement an der Isolierstoffdüse befestigt und mittels dieser angetrieben sowie radial innerhalb der Dauerstromkontakstücke angeordnet ist.The object is achieved in that the second drive element is fastened to the insulating material nozzle and is driven by means of it, and is arranged radially within the continuous current contact pieces.

Dadurch, daß das zweite Antriebselement an der Isolierstoffdüse befestigt ist, und die Isolierstoffdüse somit selbst die Antriebskraft auf das zweite Lichtbogenkopntaktstück überträgt, kann das zweite Antriebselement relativ kurz gehalten werden. In der mechanischen Kette der die Antriebsbewegung übertragenden Elemente wird das erste Antriebselement von einem nicht im einzelnen dargestellten Kraftspeicher angetrieben und treibt seinerseits das erste Lichtbogenkontaktstück mit der Isolierstoffdüse an. Die Isolierstoffdüse treibt ihrerseits das zweite Antriebselement an, welches die Antriebsbewegung auf das hinter dem zweiten Lichtbogenkontaktstück angeordnete Umlenkgetriebe übertragt. Mittels des Umlenkgetriebes wird die Antriebsbewegung dann auf das zweite Lichtbogenkontaktstück übertragen.Because the second drive element is fastened to the insulating material nozzle and the insulating material nozzle itself thus transmits the driving force to the second arcing contact, the second drive element can be kept relatively short. In the mechanical chain of the elements transmitting the drive movement, the first drive element is driven by a force accumulator (not shown in detail) and in turn drives the first arcing contact piece with the insulating material nozzle. The insulating material in turn drives the second drive element, which transmits the drive movement to the reversing gear arranged behind the second arcing contact piece. The drive movement is then transmitted to the second arcing contact piece by means of the deflection gear.

Dadurch, daß das zweite Antriebselement radial innerhalb der Dauerstromkontaktstücke angeordnet ist, und nicht, wie beim Stand der Technik parallel zu dem ersten Antriebselement bzw. der Isolierstoffdüse radial außerhalb verläuft, wird die Baugröße der Unterbrechereinheit des erfindungsgemäßen Hochspannungs-Leistungsschalters in radialer Richtung kleingehalten. Dadurch, daß das zweite Antriebselement, beispielsweise in Form einer Antriebsstange, direkt an die Isolierstoffdüse und nicht an das erste Antriebselement angekoppelt ist, wird die notwendige Baulange des zweiten Antriebselements und somit auch die beim Schaltvorgang zu beschleunigende Masse verringert.Characterized in that the second drive element is arranged radially within the continuous current contact pieces, and not, as in the prior art parallel to the first drive element or the insulating nozzle radially outside, the size of the interrupter unit of the high-voltage circuit breaker according to the invention is kept small in the radial direction. Characterized in that the second drive element, for example in the form of a drive rod, is coupled directly to the insulating nozzle and not to the first drive element, the necessary overall length of the second drive element and thus also the mass to be accelerated during the switching process is reduced.

Die Baugröße eines solchen Hochspannungs-Leistungsschalters ist genau gleich der Baugröße eines entsprechenden Schalters, bei dem nur eines der Lichtbogenkontaktstücke antreibbar ist und bei dem das zweite Antriebselement und das Umlenkgetriebe fehlen. Für beide Varianten des Schalters können somit gleiche Isolierstoffgehäuse, beispielsweise Porzellangehäuse verwendet werden.The size of such a high-voltage circuit breaker is exactly the same as the size of a corresponding switch in which only one of the arcing contact pieces can be driven and in which the second drive element and the deflection gear are missing. The same insulating material housing, for example porcelain housing, can thus be used for both variants of the switch.

Da das zweite Antriebselement mit dem Lichtbogen bzw. mit heißem Löschgas in Kontakt kommen kann, sollte es aus einem lichtbogenresistenten Material, beispielsweise PTFE, hergestellt werden.Since the second drive element can come into contact with the arc or with hot quenching gas, it should be made of an arc-resistant material, for example PTFE.

Eine vorteilhafte Ausführungsform der Erfindung sieht vor, daß an das Umlenkgetriebe eine das zweite Lichtbogenkontaktstück umgebende Feldelektrode angekoppelt ist, die im Zuge einer Schaltbewegung gegensinnig zu dem zweiten Lichtbogenkontaktstück bewegbar ist.An advantageous embodiment of the invention provides that a field electrode surrounding the second arcing contact piece is coupled to the deflecting gear and can be moved in the opposite direction to the second arcing contact piece in the course of a switching movement.

Durch diese Konstruktion kann an dem Umlenkgetriebe ohne größeren zusätzlichen mechanischen Aufwand die Feldelektrode angekoppelt werden, die beim Ausschaltvorgang, wenn beide Lichtbogenkontaktstücke auseinandergezogen werden, vorgeschoben wird, um eine Vergleichmäßigung des elektrischen Feldes im Bereich der Trennstrecke zwischen den Lichtbogenkontaktstücken zu erreichen. Es kann vorgesehen sein, das Umlenkgetriebe so auszulegen, daß die Bewegung der Feldelektrode erst kurz vor dem Ende der Ausschaltbewegung beginnt.With this construction, the field electrode can be coupled to the deflection gear without major additional mechanical outlay are pushed forward during the switch-off process, when both arcing contact pieces are pulled apart, in order to achieve an equalization of the electrical field in the region of the separation distance between the arcing contact pieces. It can be provided that the deflection gear is designed so that the movement of the field electrode only begins shortly before the end of the switch-off movement.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß das Umlenkgetriebe einen ortsfest schwenkbar gelagerten zweiarmigen Hebel aufweist, an den das zweite Antriebselement, das zweite Lichtbogenkontaktstück und die Feldelektrode angekoppelt sind.A further advantageous embodiment of the invention provides that the deflection gear has a fixedly pivotable two-armed lever to which the second drive element, the second arcing contact piece and the field electrode are coupled.

Durch einen solchen Hebel ist das Umlenkgetriebe in einfachster und funktionssicherster Weise realisierbar. Dadurch, daß das Umlenkgetriebe von dem ersten Lichtbogenkontaktstück aus hinter dem zweiten Lichtbogenkontaktstück angeordnet ist, ist erreicht, daß beide Lichtbogenkontaktstücke beim Ausschaltvorgang, bei dem es auf eine extrem hohe Beschleunigung ankommt, mittels einer Zugbewegung angetrieben werden. Je nach der Ruhestellung des zweiarmigen Hebels kann ein passendes Beschleunigungsprofil des zweiten Lichtbogenkontaktstückes während der Ausschaltbewegung verwirklicht werden. Vorteilhaft geschieht die Ankopplung des zweiten Antriebselementes und des zweiten Lichtbogenkontaktstückes an den Hebel mittels Kulissenführungen, so daß die radiale Auslenkung dieser Elemente während der Schwenkbewegung des Hebels möglichst gering gehalten wird. Außerdem kann durch die Kulissenführungen ein Überhub des Antriebs kompensiert werden.With such a lever, the reversing gear can be implemented in the simplest and most reliable manner. The fact that the deflection gear is arranged from the first arcing contact piece behind the second arcing contact piece ensures that both arcing contact pieces are driven by means of a pulling motion during the switching-off process, in which extremely high acceleration is important. Depending on the rest position of the two-armed lever, a suitable acceleration profile of the second arcing contact piece can be realized during the switch-off movement. The second drive element and the second arcing contact piece are advantageously coupled to the lever by means of link guides, so that the radial deflection of these elements is kept as low as possible during the pivoting movement of the lever. An overstroke of the drive can also be compensated for by the link guides.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung gezeigt und nachfolgend beschrieben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and described below.

Dabei zeigt die Figur schematisch in einem Langsschnitt eine Unterbrechereinheit eines Hochspannungs-Leistungsschalters.The figure shows schematically in a longitudinal section an interrupter unit of a high-voltage circuit breaker.

Der dargestellte Hochspannungs-Leistungsschalter weist zwei Lichtbogenkontaktstücke 1, 2 auf, die einander koaxial gegenüberstehen. Die Darstellung zeigt einen Zustand wahrend der Schaltbewegung kurz vor Erreichen des Ausschaltzustandes. Die Lichtbogenkontaktstücke 1, 2 sind bereits voneinander getrennt und zwischen ihnen brennt ein Lichtbogen 3. Das erste Lichtbogenkontaktstück 1 wird in Richtung des Pfeils 12, das zweite Lichtbogenkontaktstück 2 in Richtung des Pfeils 13 bewegt. Das erste Lichtbogenkontaktstück 1 ist hohl ausgebildet und nimmt im Einschaltzustand das stiftförmige zweite Lichtbogenkontaktstück 2 auf. Das erste Lichtbogenkontaktstück 1 ist an ein Kontaktrohr 4 angekoppelt, das auch als erstes Antriebselement dient und die Antriebsbewegung von einem nicht dargestellten Kraftspeicher überträgt.The high-voltage circuit breaker shown has two arcing contact pieces 1, 2 which are coaxially opposed to one another. The illustration shows a state during the switching movement shortly before the switch-off state is reached. The arcing contact pieces 1, 2 are already separated from one another and an arc is burning between them. The first arcing contact piece 1 is moved in the direction of the arrow 12, the second arcing contact piece 2 in the direction of the arrow 13. The first arcing contact piece 1 is hollow and receives the pin-shaped second arcing contact piece 2 in the switched-on state. The first arcing contact piece 1 is coupled to a contact tube 4, which also serves as the first drive element and transmits the drive movement from an energy store, not shown.

Das erste Lichtbogenkontaktstück 1 trägt eine mehrteilige Isolierstoffdüse 9, die im Einschaltzustand das zweite Lichtbogenkontaktstück 2 umgibt und während des Ausschaltvorganges das durch den Lichtbogen 3 erhitzte Löschgas leitet. Zunächst kann durch einen Kanal 14 heißes Löschgas in einen Heizraum 15 strömen, aus dem es dann zu geeigneter Zeit, kurz nach dem Stromnulldurchgang des zu schaltenden Wechselstromes durch denselben Kanal 14 wieder zurückströmt, um den Lichtbogen 3 zu beblasen und die Wiederverfestigung der Schaltstrecke zu beschleunigen.The first arcing contact 1 carries a multi-part insulating nozzle 9, which surrounds the second arcing contact 2 in the switched-on state and conducts the quenching gas heated by the arc 3 during the switch-off process. First, hot quenching gas can flow through a channel 14 into a heating chamber 15, from which it then flows back through the same channel 14 at a suitable time, shortly after the zero current crossing of the alternating current, in order to blow the arc 3 and accelerate the reconsolidation of the switching path .

Das freie Ende der Isolierdüse 9 ist in einem Rohr 10 geführt, das gleichzeitig eine Feldelektrode bildet.The free end of the insulating nozzle 9 is guided in a tube 10 which simultaneously forms a field electrode.

An dem freien Ende der Isolierstoffdüse 9 ist ein Antriebselement 5 in Form einer aus PTFE bestehenden Stange befestigt.At the free end of the insulating nozzle 9, a drive element 5 is attached in the form of a rod made of PTFE.

In dem Ausführungsbeispiel ist zunächst an der Düse ein Ring 16 befestigt, mit dem ein Ende des zweiten Antriebselementes 5 verschraubt ist. Durch das zweite Antriebselement 5 wird der zweiarmige Hebel 11 betätigt. Während des Ausschaltvorganges wird die Stange 5 in Richtung des Pfeils 17 gezogen, wodurch der Hebel 11 im Uhrzeigersinn geschwenkt wird. Hierdurch wird eine Zugbewegung in Richtung des Pfeils 13 auf das zweite Lichtbogenkontaktstück 2 übertragen.In the exemplary embodiment, a ring 16 is first attached to the nozzle, with which one end of the second drive element 5 is screwed. The two-armed lever 11 is actuated by the second drive element 5. During the switch-off process, the rod 5 is pulled in the direction of the arrow 17, as a result of which the lever 11 is pivoted clockwise. As a result, a pulling movement in the direction of arrow 13 is transmitted to the second arcing contact piece 2.

Gleichzeitig wird über eine ebenfalls an den Hebel 11 angekoppelte Stange 18 die Feldelektrode 10 in Richtung des Pfeils 19 bewegt.At the same time, the field electrode 10 is moved in the direction of the arrow 19 via a rod 18 which is likewise coupled to the lever 11.

Beim Einschaltvorgang finden die beschriebenen Vorgänge in umgekehrtem Richtungssinn statt.When switching on, the processes described take place in the opposite direction.

Das zweite Lichtbogenkontaktstück 2 ist mittels einer Gleitkontakt führung 20 in axialer Richtung innerhalb der Feldelektrode 10 geführt und kontaktiert. Die Feldelektrode 10 ist ihrerseits in umlaufenden Gleitkontakten 21, 22 des Dauerstromkontaktstücks 8 geführt und kontaktiert.The second arcing contact piece 2 is guided and contacted in the axial direction within the field electrode 10 by means of a sliding contact guide 20. The field electrode 10 is in turn guided and contacted in circumferential sliding contacts 21, 22 of the continuous current contact piece 8.

Der Hebel 11 des Umlenkgetriebes 6 ist in schematisch dargestellter Weise um die ortsfeste Achse 23 schwenkbar gelagert. Die Achse 23 kann beispielsweise in dem Tragrohr 24 befestigt sein, das das Dauerstromkontaktstück 8 trägt.The lever 11 of the deflection gear 6 is pivotally mounted in a schematically illustrated manner about the stationary axis 23. The axis 23 can for example be fastened in the support tube 24 which carries the continuous current contact piece 8.

Claims (3)

Hochspannungs-Leistungsschalter mit einem ersten und einem zweiten, einander koaxial gegenüberstehenden Lichtbogenkontaktstücken (1, 2), zwischen denen bei einem Ausschaltvorgang gegebenenfalls ein Schaltlichtbogen (3) brennt und die im Zuge eines Ausschaltvorganges durch einen gemeinsamen Antrieb in entgegengesetzten Richtungen antreibbar sind, wobei die Antriebsbewegung durch ein erstes Antriebselement (4) auf das erste Lichtbogenkontaktstück (1) und durch ein zweites Antriebselement (5) mittels eines Umlenkgetriebes (6) auf das zweite Lichtbogenkontaktstück übertragen wird und mit zwei die Lichtbogenkontaktstücke (1, 2) koaxial umgebenden Dauerstromkontaktstücken (7, 8) sowie mit einer Isolierstoffdüse (9), die mit dem ersten Lichtbogenkontaktstück (1) fest verbunden ist und die der Beblasung des Schaltlichtbogens (3) mit einem Löschgas dient,
dadurch gekennzeichnet, daß
das zweite Antriebselement (5) an der Isolierstoffdüse (9) befestigt und mittels dieser angetrieben sowie radial innerhalb der Dauerstromkontakstücke (7, 8) angeordnet ist.High-voltage circuit breaker with a first and a second, coaxially opposing arcing contact pieces (1, 2), between which a switching arc (3) burns when switching off and which can be driven in opposite directions in the course of a switching off operation by a common drive, the Drive movement is transmitted by a first drive element (4) to the first arcing contact piece (1) and by a second drive element (5) by means of a deflection gear (6) to the second arcing contact piece and with two continuous current contact pieces (7) coaxially surrounding the arcing contact pieces (1, 2) , 8) and with an insulating nozzle (9) which is firmly connected to the first arcing contact piece (1) and which is used to blow the switching arc (3) with an extinguishing gas,
characterized in that
the second drive element (5) is fastened to the insulating material nozzle (9) and driven by means of it and is arranged radially within the continuous current contact pieces (7, 8). Hochspannungs-Leistungsschalter nach Anspruch 1,
dadurch gekennzeichnet, daß
an das Umlenkgetriebe (6) eine das zweite Lichtbogenkontaktstück (2) umgebende Feldelektrode (10) angekoppelt ist, die im Zuge einer Schaltbewegung gegensinnig zu dem zweiten Lichtbogenkontaktstück (2) bewegbar ist.High-voltage circuit breaker according to claim 1,
characterized in that
a field electrode (10) surrounding the second arcing contact piece (2) is coupled to the deflecting gear (6) and can be moved in the opposite direction to the second arcing contact piece (2) in the course of a switching movement. Hochspannungs-Leistungsschalter nach Anspruch 2,
dadurch gekennzeichnet, daß
das Umlenkgetriebe (6) einen ortsfest schwenkbar gelagerten zweiarmigen Hebel (11) aufweist, an den das zweite Antriebselement (5), das zweite Lichtbogenkontaktstück (2) und die Feldelektrode (10) angekoppelt sind.High-voltage circuit breaker according to claim 2,
characterized in that
the deflection gear (6) has a fixed, pivotably mounted two-armed lever (11) to which the second drive element (5), the second arcing contact piece (2) and the field electrode (10) are coupled.
EP97250161A 1996-05-24 1997-05-23 High voltage circuit breaker with two driven switch contact pieces Revoked EP0809269B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29724842U DE29724842U1 (en) 1996-05-24 1997-05-23 HV circuit breaker with two drivable switch contact pieces - has drive element for second light arc contact piece attached to insulating nozzle for quenching gas and driven with it as well as being arranged radially inside permanent current contact pieces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19622460A DE19622460C2 (en) 1996-05-24 1996-05-24 High-voltage circuit breaker with two drivable switch contact pieces
DE19622460 1996-05-24

Publications (3)

Publication Number Publication Date
EP0809269A2 true EP0809269A2 (en) 1997-11-26
EP0809269A3 EP0809269A3 (en) 1998-11-25
EP0809269B1 EP0809269B1 (en) 2005-04-27

Family

ID=7796144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97250161A Revoked EP0809269B1 (en) 1996-05-24 1997-05-23 High voltage circuit breaker with two driven switch contact pieces

Country Status (2)

Country Link
EP (1) EP0809269B1 (en)
DE (2) DE19622460C2 (en)

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EP1011121A1 (en) * 1998-12-18 2000-06-21 Alstom Energietechnik GmbH Gas blast switch
WO2000042627A1 (en) * 1999-01-15 2000-07-20 Siemens Aktiengesellschaft High voltage circuit breaker, especially a gas-blast circuit breaker
FR2817389A1 (en) * 2000-11-30 2002-05-31 Schneider Electric High Voltag DOUBLE MOVEMENT HIGH VOLTAGE ELECTRICAL SWITCHING APPARATUS
FR2906929A1 (en) * 2006-10-09 2008-04-11 Areva T & D Sa ACTUATION BY CONTACTS OF A DOUBLE MOVEMENT CUT CHAMBER BY AN INSULATING TUBE
FR2906931A1 (en) * 2006-10-09 2008-04-11 Areva T & D Sa CUTTING CHAMBER WITH CYLINDER FIELD DISTRIBUTION FOR HIGH VOLTAGE OR MEDIUM VOLTAGE CIRCUIT BREAKERS
EP1930930A1 (en) 2006-12-06 2008-06-11 ABB Technology AG Transmission for a high-voltage circuit breaker
EP1933348A1 (en) * 2006-12-11 2008-06-18 ABB Technology AG High voltage circuit breaker with a gear with dead-center position
US7777149B2 (en) 2006-09-29 2010-08-17 Areva T&D Sa Actuating the oppositely-moving contacts of an interrupting chamber by a cylindrical cam
WO2011018426A1 (en) * 2009-08-14 2011-02-17 Areva T&D Sas Cutoff chamber for medium- or high-voltage circuit breaker with reduced controlling power
FR2953639A1 (en) * 2009-12-09 2011-06-10 Areva T & D Sas HIGH VOLTAGE CIRCUIT BREAKER WITH REMOVABLE SCREEN FOR IMPROVING THE GRADIENT OF FIELD
EP2343720A1 (en) * 2010-01-12 2011-07-13 ABB Technology AG Gas-isolated high voltage switch
US8013268B2 (en) * 2007-04-17 2011-09-06 Areva T&D Sa Circuit breaker with a double acting circuit-breaking chamber and an inverted structure
DE102011078483A1 (en) * 2011-06-30 2013-01-03 Siemens Aktiengesellschaft Electrical switching device
DE102012205224A1 (en) * 2012-03-30 2013-10-02 Alstom Technology Ltd. Air blast switch
FR2995131A1 (en) * 2012-12-12 2014-03-07 Alstom Technology Ltd Circuit breaker for medium and high voltages at output of generator, has arcing contacts housed in bulb with sulfur hexafluoride, and permanent contacts housed in main chamber containing insulating gas under pressure
CN103839728A (en) * 2014-03-10 2014-06-04 现代重工(中国)电气有限公司 Tank-type breaker for gas insulated switchgear
WO2014114637A1 (en) * 2013-01-24 2014-07-31 Alstom Technology Ltd Electrical apparatus with dual movement of contacts comprising a return device with two levers
FR3008225A1 (en) * 2013-07-08 2015-01-09 Alstom Technology Ltd REMOVABLE SCREEN BREAKER
CN104704592A (en) * 2013-02-07 2015-06-10 厦门华电开关有限公司 Switch transmission mechanism and power switch
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US20150371797A1 (en) * 2013-01-22 2015-12-24 Siemens Aktiengesellschaft Switching Arrangement
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DE10003359C1 (en) * 2000-01-21 2001-07-19 Siemens Ag High voltage power switch with driven light arc contact pieces, hot chamber ensures improved quenching of switch-off light arc at high contact separation speeds - has auxiliary drive that reverses direction of motion of second light arc contact piece at least once, esp. twice, during switch-off process
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EP0313813B1 (en) * 1987-10-27 1993-09-01 Asea Brown Boveri Ag Gas blast switch

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FR2774503A1 (en) * 1998-02-02 1999-08-06 Gec Alsthom T & D Sa Circuit breaker construction technique
US6049050A (en) * 1998-02-02 2000-04-11 Alsthom T & D Sa Medium or high voltage circuit breaker including a transmission belt looped around two wheels
FR2779566A1 (en) * 1998-06-08 1999-12-10 Alsthom Gec DOUBLE MOTION HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER INCLUDING A TRANSLATION-GUIDED BLOWER NOZZLE
WO1999065048A1 (en) * 1998-06-08 1999-12-16 Alstom France S.A. High and medium voltage circuit breaker with double movement comprising a blower tube guided in translation
EP1011121A1 (en) * 1998-12-18 2000-06-21 Alstom Energietechnik GmbH Gas blast switch
US6410873B1 (en) 1999-01-15 2002-06-25 Siemens Aktiengesellschaft High voltage circuit breaker, especially a gas-blast circuit breaker
WO2000042627A1 (en) * 1999-01-15 2000-07-20 Siemens Aktiengesellschaft High voltage circuit breaker, especially a gas-blast circuit breaker
FR2817389A1 (en) * 2000-11-30 2002-05-31 Schneider Electric High Voltag DOUBLE MOVEMENT HIGH VOLTAGE ELECTRICAL SWITCHING APPARATUS
EP1211706A1 (en) * 2000-11-30 2002-06-05 Schneider Electric High Voltage SA High tension switchgear with double mouvement
US7777149B2 (en) 2006-09-29 2010-08-17 Areva T&D Sa Actuating the oppositely-moving contacts of an interrupting chamber by a cylindrical cam
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US8698033B2 (en) 2006-10-09 2014-04-15 Alstom Technology Ltd Interrupting chamber with a field distributor cylinder for high-voltage or medium-voltage circuit breakers
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Also Published As

Publication number Publication date
EP0809269A3 (en) 1998-11-25
DE19622460A1 (en) 1997-11-27
EP0809269B1 (en) 2005-04-27
DE19622460C2 (en) 1998-04-02
DE59712280D1 (en) 2005-06-02

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