WO1999012177A1 - Electric high voltage switch - Google Patents

Electric high voltage switch Download PDF

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Publication number
WO1999012177A1
WO1999012177A1 PCT/DE1998/002461 DE9802461W WO9912177A1 WO 1999012177 A1 WO1999012177 A1 WO 1999012177A1 DE 9802461 W DE9802461 W DE 9802461W WO 9912177 A1 WO9912177 A1 WO 9912177A1
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WO
WIPO (PCT)
Prior art keywords
piston
compression piston
voltage switch
contact piece
compression
Prior art date
Application number
PCT/DE1998/002461
Other languages
German (de)
French (fr)
Inventor
Heiner Marin
Volker Lehmann
Hold Dienemann
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP98951192A priority Critical patent/EP0983598A1/en
Publication of WO1999012177A1 publication Critical patent/WO1999012177A1/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
    • H01H33/904—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 characterised by the transmission between operating mechanism and piston or movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • 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
    • H01H33/905—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 the compression volume being formed by a movable cylinder and a semi-mobile piston

Definitions

  • the invention relates to an electrical high-voltage switch with a contact arrangement which has two contact pieces, at least one of which can be driven by means of a drive and with a piston-cylinder arrangement for generating an extinguishing agent flow acting on the arc.
  • Such an electrical switch is known from OS-DE 19 66 973.
  • This has two hollow contact pieces, one of which is movable and a drivable bridging contact piece.
  • an extinguishing agent flow acting on an arc is generated during a switch-off process.
  • SF 6 gas is mainly used as an extinguishing agent.
  • Part of the piston-cylinder arrangement is rigidly connected to the drivable bridging contact piece and can be moved together with it.
  • the other part of the piston-cylinder arrangement is connected to the drive by means of a gear and can be moved in opposite directions to the drive movement of the bridging contact piece.
  • the present invention is based on the object
  • the object is achieved in that a part of the piston-cylinder arrangement can be moved in opposite directions to the switch-off movement of the drive by means of the drivable contact piece.
  • the piston-cylinder arrangement has a first compression piston, a second compression piston which can be moved by means of the drivable contact piece and a stationary cylinder.
  • the extinguishing gas pressure can be adapted to the requirements of the switch-off process.
  • an end wall of a boiler room facing the drive side forms the first compression piston with a constant volume.
  • the second compression piston has a multi-function valve.
  • the multi-function valve fulfills the function of a pressure relief valve during a switch-off process, i.e. it limits the extinguishing gas pressure in the compression cylinder. During a switch-on process, it serves as an inlet valve, whereby extinguishing gas can flow into the compression cylinder.
  • the second compression piston can be driven by means of a link connected to the drivable contact piece and a lever which is driven in a stationary manner and driven by the latter.
  • a simple and robust device can be realized by means of a link and a lever which is driven by the stationary bearing and which uses the locking movement of the drivable contact piece in order to drive the second compression piston in opposite directions.
  • a further advantageous embodiment can lie in the fact that at least three baffles and fixed levers for driving the second compression piston are provided on the circumference of a switching tube carrying the drivable contact piece.
  • the second compression piston by means of a first rack connected to it, a locally fixed gear and a second rack connected to the drivable contact piece can be driven.
  • FIG. 1 shows the electrical high-voltage switch with the device according to the invention in the switched-on state, while the lower half shows the electrical high-voltage switch in the switched-off state
  • FIG. 2 shows the electrical high-voltage switch with a further device according to the invention.
  • the electrical high-voltage switch has an outer encapsulation 1 made of insulating material, in which a switching tube 2 is arranged concentrically.
  • a drivable, tubular and hollow contact piece carrier 3 is carried out through the switching tube 2.
  • a stationary, pin-shaped contact piece 4 axially faces the drivable contact piece 19 and is brought into engagement with it when the electrical high-voltage switch is switched on.
  • a piston-cylinder arrangement 5, 6, 7 has a fixed, hollow compression cylinder 5, a Most compression piston 6 and a second compression piston 7.
  • the compression cylinder 5 connects directly to the switching tube 2.
  • the first compression piston 6 forms an end wall of a heating chamber 8 and is firmly connected to the drivable contact piece 19 and can be moved together with the latter by a drive 9.
  • the second compression piston 7 is arranged on the drive side of a compression space 20, opposite the first compression piston 6. This has a multi-function valve 10 with a pressure relief valve 11 and a refill valve 12.
  • a rod 13 is articulated with its first end to the end wall of the second compression piston 7 on the drive side. This is hinged at its second end to a fixedly pivotable two-armed lever 14.
  • the rod 13 is actuated by means of the lever 14, as a result of which the second compression piston 7 can be displaced from its position.
  • the lever 14 is mounted on a bracket 15 which is attached to the inner wall of the switching tube 2.
  • the contact piece carrier 3 has on its circumference a formation 16 which forms a backdrop which pivots out the lever 14 during a holding movement, as a result of which the rod 13 is actuated and the second compression piston 7 is displaced counter to the movement of the contact piece 19.
  • a return spring 17 is arranged in the vicinity of the joint 18 and, after a switch-on operation, returns the lever 14, the rod 13 and the second piston 7 to the position shown in the figure in the switched-on state.
  • the quenching gas flows from the compression cylinder 5 into the heating volume 8 and from there towards the arc in order to extinguish it at the current zero crossing.
  • the second compression piston 7 is also moved in the opposite direction to the drive movement, as a result of which the compression volume 20 is further reduced and an additional pressure increase of the extinguishing gas in the compression cylinder 5 is achieved.
  • the quenching gas flow is additionally increased and a high quenching gas pressure is reached earlier during the switch-off movement, as a result of which the arc is extinguished better.
  • the further device according to the invention shown in FIG. 2 has a toothed wheel 22, a first toothed rack 21 and a second toothed rack 23.
  • the gear wheel 22 is rotated by means of the movement of the second rack 23, which is fixedly connected to the drivable contact piece carrier 3, whereby the first rack 21 and the second compression piston 7 are moved in opposite directions to the drive movement.

Abstract

During the breaking action of an electric high voltage switch, a quick and high compression of an extinguishing gas should result in order to effectively extinguish an electric arc. During said breaking action, a high and quick compression of the extinguishing gas is achieved by means of a first (6) and second compression piston (7) of a piston cylinder arrangement (5, 6, 7) which move in opposite directions. The breaking movement of an actuatable contact part (19) is utilized in order to simultaneously operate the first compression piston (6) in the direction of the actuator (9) breaking movement and to actuate the second compression piston (7) in an opposite direction to the first compression piston by means of a shape (16) and a stationary mounted lever (14).

Description

Beschreibungdescription
Elektrischer HochspannungsschalterElectrical high voltage switch
Die Erfindung bezieht sich auf einen elektrischen Hochspannungsschalter mit einer Kontaktanordnung, die zwei Kontaktstücke aufweist, von denen wenigstens eines mittels eines Antriebes antreibbar ist und mit einer Kolben-Zylinder-Anordnung zur Erzeugung einer auf den Lichtbogen einwirkenden Löschmittelströmung.The invention relates to an electrical high-voltage switch with a contact arrangement which has two contact pieces, at least one of which can be driven by means of a drive and with a piston-cylinder arrangement for generating an extinguishing agent flow acting on the arc.
Aus der OS-DE 19 66 973 ist ein derartiger elektrischer Schalter bekannt. Dieser weist zwei hohl ausgebildete Kontaktstücke, von denen eines bewegbar ist und ein antreibbares Überbrückungskontaktstück auf. Mittels einer Kolben-Zylinder- Anordnung wird während eines Ausschaltvorgangs eine auf einen Lichtbogen einwirkende LöschmittelStrömung erzeugt. Vorwiegend wird SF6-Gas als Löschmittel verwendet. Ein Teil der Kolben-Zylinder-Anordnung ist starr mit dem antreibbaren Überbrückungskontaktstück verbunden und mit diesem gemeinsam bewegbar. Der andere Teil der Kolben-Zylinder-Anordnung ist mittels eines Getriebes mit dem Antrieb verbunden und mit diesem gegensinnig zur Antriebsbewegung des Überbrückungskon- taktstücks bewegbar. Durch die gegensinnige Bewegung von Kol- ben und Zylinder der Kolben-Zylinder-Anordnung wird während eines Aussschaltvorgangs eine hohe Kompression des Löschgases erreicht, wodurch eine starke LöschmittelStrömung zur Löschung des Lichtbogens erzeugt werden kann.Such an electrical switch is known from OS-DE 19 66 973. This has two hollow contact pieces, one of which is movable and a drivable bridging contact piece. By means of a piston-cylinder arrangement, an extinguishing agent flow acting on an arc is generated during a switch-off process. SF 6 gas is mainly used as an extinguishing agent. Part of the piston-cylinder arrangement is rigidly connected to the drivable bridging contact piece and can be moved together with it. The other part of the piston-cylinder arrangement is connected to the drive by means of a gear and can be moved in opposite directions to the drive movement of the bridging contact piece. Due to the opposite movement of the piston and cylinder of the piston-cylinder arrangement, a high compression of the extinguishing gas is achieved during a switch-off process, as a result of which a strong flow of extinguishing agent can be generated to extinguish the arc.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, denThe present invention is based on the object
Kompressionsvorgang des Löschgases während des Aussschaltvorgangs in elektrischen Hochspannungsschaltern weiter zu verbessern. Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Teil der Kolben-Zylinder-Anordnung mittels des antreibbaren Kontaktstücks gegensinnig zur Ausschaltbewegung des Antriebes bewegbar ist.To further improve the compression process of the extinguishing gas during the switch-off process in electrical high-voltage switches. The object is achieved in that a part of the piston-cylinder arrangement can be moved in opposite directions to the switch-off movement of the drive by means of the drivable contact piece.
Hierdurch wird erreicht, daß mittels nur einer, den Antrieb und das bewegliche Kontaktstück verbindenden Schaltstange sowohl das bewegliche Kontaktstück, als auch beide Teile der Kolben-Zylinder-Anordnung gleichzeitig bewegt werden können. Hierdurch entfällt die Konstruktion einer aufwendigen mechanischen Vorrichtung, die die gegensinnige Bewegung des einen Teils der Kolben-Zylinder-Anordnung vom Antrieb des Schalters ableitet .This ensures that both the movable contact piece and both parts of the piston-cylinder arrangement can be moved simultaneously by means of only one switch rod connecting the drive and the movable contact piece. This eliminates the construction of a complex mechanical device which derives the opposite movement of one part of the piston-cylinder arrangement from the drive of the switch.
Bei einer vorteilhaften Ausgestaltung der Erfindung kann vorgesehen sein, daß die Kolben-Zylinder-Anordnung einen ersten Kompressionskolben, einen zweiten mittels des antreibbaren Kontaktstück bewegbaren Kompressionskolben und einen feststehenden Zylinder aufweist.In an advantageous embodiment of the invention it can be provided that the piston-cylinder arrangement has a first compression piston, a second compression piston which can be moved by means of the drivable contact piece and a stationary cylinder.
Durch die Gestaltung der Relativbewegung des ersten, starr mit dem antreibbaren Kontaktstück verbundenen Kompressionskolbens und des zweiten, vom antreibbaren Kontak stück bewegbaren Kompressionskolbens, kann der Lόschgasdruck den Erfor- dernissen des Ausschaltvorgangs angepaßt werden.By designing the relative movement of the first compression piston rigidly connected to the drivable contact piece and the second compression piston movable by the drivable contact piece, the extinguishing gas pressure can be adapted to the requirements of the switch-off process.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung kann vorgesehen sein, daß eine der Antriebsseite zugewandte Stirnwand eines Heizraumes mit konstantem Volumen den ersten Kompressionskolben bildet.In a further advantageous embodiment of the invention it can be provided that an end wall of a boiler room facing the drive side forms the first compression piston with a constant volume.
Hierdurch wird eine einfache und kostengünstige Realisierung des Schalters mit der erfindungsgemäßen Kompressionsvorrich- tung und einem hiermit konstruktiv verbundenen Heizraum er- reicht. Vorteilhaft kann auch vorgesehen sein, daß der zweite Kompressionskolben ein Mehrfunktionsventil aufweist.In this way, a simple and inexpensive implementation of the switch with the compression device according to the invention and a boiler room connected to it in construction is achieved. It can also be advantageously provided that the second compression piston has a multi-function valve.
Das Mehrfunktionssventil erfüllt während eines Ausschaltvorgangs die Funktion eines Überdruckventils, d.h. es begrenzt den Löschgasdruck im Kompressionszylinder. Während eines Einschaltvorgangs dient es als Einlaßventil, wodurch Löschgas in den Kompressionszylinder hineinströmen kann.The multi-function valve fulfills the function of a pressure relief valve during a switch-off process, i.e. it limits the extinguishing gas pressure in the compression cylinder. During a switch-on process, it serves as an inlet valve, whereby extinguishing gas can flow into the compression cylinder.
Vorteilhaft kann auch vorgesehen sein, daß der zweite Kom- pressionskolben mittels einer mit dem antreibbaren Kontaktstück verbundenen Kulisse und eines von dieser angetriebenen ortsfest gelagerten Hebels antreibbar ist.It can also be advantageously provided that the second compression piston can be driven by means of a link connected to the drivable contact piece and a lever which is driven in a stationary manner and driven by the latter.
Mittels einer Kulisse und eines von dieser angetriebenen ortsfest gelagerten Hebels kann eine einfache und robuste Vorrichtung realisiert werden, die die Aussehaltbewegung des antreibbaren Kontaktstücks nutzt, um den zweiten Kompressi- onskolben gegensinnig dazu anzutreiben.A simple and robust device can be realized by means of a link and a lever which is driven by the stationary bearing and which uses the locking movement of the drivable contact piece in order to drive the second compression piston in opposite directions.
Eine weitere vorteilhafte Ausgestaltung kann darin liegen, daß am Umfang eines das antreibbare Kontaktstück tragenden Schaltrohres mindestens drei Kulissen und ortsfest gelagerte Hebel zum Antrieb des zweiten Kompressionskolbens vorgesehen sind.A further advantageous embodiment can lie in the fact that at least three baffles and fixed levers for driving the second compression piston are provided on the circumference of a switching tube carrying the drivable contact piece.
Die Verwendung von mindestens drei Antriebselementen, d.h. Kulissen und ortsfest gelagerten Hebeln, verhindert eine Schrägstellung des ringförmigen zweiten Kompressionskolbens während einer Bewegung.The use of at least three drive elements, i.e. Baffles and fixed levers prevent the ring-shaped second compression piston from tilting during movement.
Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung kann vorgesehen sein, daß der zweite Kompressionskolben mit- tels einer mit ihm verbundenen ersten Zahnstange, eines orts- fest gelagerten Zahnrades und einer mit dem antreibbaren Kontaktstück verbundenen zweiten Zahnstange antreibbar ist.In a further advantageous embodiment of the invention it can be provided that the second compression piston by means of a first rack connected to it, a locally fixed gear and a second rack connected to the drivable contact piece can be driven.
Hierdurch ist eine weitere einfache Möglichkeit gegeben, um die gegensinnige Bewegung des zweiten Kompressionskolbens mittels der Aussehaltbewegung des antreibbaren Kontaktstücks zu realisieren. Mittels eines Antriebes mit Zahnrädern und Zahnstangen lassen sich außerdem wesentlich längere Hübe erreichen als bei einem Antrieb des zweiten Kompressionskolbens mittels Kulissen und ortsfest gelagerten Hebeln.This provides a further simple possibility for realizing the opposite movement of the second compression piston by means of the holding movement of the drivable contact piece. By means of a drive with gearwheels and toothed racks, considerably longer strokes can be achieved than when the second compression piston is driven by means of cams and fixed levers.
Anhand einer Zeichnung ist im folgenden ein Ausführungsbei- spiel der Erfindung beschrieben und die Wirkungsweise erläutert .An exemplary embodiment of the invention is described below with reference to a drawing and the mode of operation is explained.
Die obere Hälfte der Figur 1 zeigt den elektrischen Hochspannungsschalter mit der erfindungsgemäßen Vorrichtung im eingeschalteten Zustand, während die untere Hälfte den elektrischen Hochspannungsschalter im ausgeschalteten Zustand zeigtThe upper half of FIG. 1 shows the electrical high-voltage switch with the device according to the invention in the switched-on state, while the lower half shows the electrical high-voltage switch in the switched-off state
Die Figur 2 zeigt den elektrischen Hochspannungsschalter mit einer weiteren erfindungsgemäßen Vorrichtung.FIG. 2 shows the electrical high-voltage switch with a further device according to the invention.
Wie in der Figur 1 dargestellt, weist der elektrische Hoch- spannungsschalter eine aus Isoliermaterial bestehende äußere Kapselung 1 auf, in der ein Schaltrohr 2 konzentrisch angeordnet ist. Durch das Schaltrohr 2 ist ein antreibbarer, rohrförmig und hohl ausgebildeter Kontaktstückträger 3 durchgeführt. Ein feststehendes, stiftförmiges Schaltstück 4 steht dem antreibbaren Kontaktstück 19 axial gegenüber und wird mit diesem im Einschaltzustand des elektrischen Hochspannungs- schalters in Eigriff gebracht.As shown in FIG. 1, the electrical high-voltage switch has an outer encapsulation 1 made of insulating material, in which a switching tube 2 is arranged concentrically. A drivable, tubular and hollow contact piece carrier 3 is carried out through the switching tube 2. A stationary, pin-shaped contact piece 4 axially faces the drivable contact piece 19 and is brought into engagement with it when the electrical high-voltage switch is switched on.
Eine Kolben-Zylinder-Anordnung 5, 6, 7 weist einen festste- henden, hohl ausgebildeten Kompressionszylinder 5, einen er- sten Kompressionskolben 6 und einen zweiten Kompressionskolben 7 auf. Der Kompressionszylinder 5 schließt sich unmittelbar an das Schaltrohr 2 an. Der erste Kompressionskolben 6 bildet eine Stirnwand eines Heizraumes 8 und ist fest mit dem antreibbaren Kontaktstück 19 verbunden und gemeinsam mit diesem von einem Antrieb 9 bewegbar. Der zweite Kompressionskolben 7 ist auf der Antriebsseite eines Kompressionsraumes 20 , gegenüber dem ersten Kompressionskolben 6 angeordnet. Dieser weist ein Mehrfunktionsventil 10 mit einem Überdruckventil 11 und einem Nachfüllventil 12 auf.A piston-cylinder arrangement 5, 6, 7 has a fixed, hollow compression cylinder 5, a Most compression piston 6 and a second compression piston 7. The compression cylinder 5 connects directly to the switching tube 2. The first compression piston 6 forms an end wall of a heating chamber 8 and is firmly connected to the drivable contact piece 19 and can be moved together with the latter by a drive 9. The second compression piston 7 is arranged on the drive side of a compression space 20, opposite the first compression piston 6. This has a multi-function valve 10 with a pressure relief valve 11 and a refill valve 12.
An die antriebsseitige Stirnwand des zweiten Kompressionskolbens 7 ist eine Stange 13 mit ihrem ersten Ende angelenkt. Diese ist mit ihrem zweiten Ende an einen ortsfest schwenkbar gelagerten zweiarmigen Hebel 14 angelenkt. Mittels des Hebels 14 wird die Stange 13 betätigt, wodurch der zweite Kompressionskolben 7 von seiner Position verschoben werden kann. Der Hebel 14 ist an einer Halterung 15 gelagert, die an der Innenwand des Schaltrohres 2 befestigt ist. Der Kontaktstück- träger 3 weist an seinem Umfang eine Ausformung 16 auf, die eine Kulisse bildet, die während einer Aussehaltbewegung den Hebel 14 ausschwenkt, wodurch die Stange 13 betätigt wird und der zweite Kompressionskolben 7 entgegen der Bewegung des Kontaktstücks 19 verschoben wird. Eine Rückholfeder 17 ist in der Nähe des Gelenks 18 angeordnet und bringt nach einem Einschaltvorgang den Hebel 14, die Stange 13 und den zweiten Kolben 7 in die in der Figur im Einschaltzustand dargestellte Position zurück.A rod 13 is articulated with its first end to the end wall of the second compression piston 7 on the drive side. This is hinged at its second end to a fixedly pivotable two-armed lever 14. The rod 13 is actuated by means of the lever 14, as a result of which the second compression piston 7 can be displaced from its position. The lever 14 is mounted on a bracket 15 which is attached to the inner wall of the switching tube 2. The contact piece carrier 3 has on its circumference a formation 16 which forms a backdrop which pivots out the lever 14 during a holding movement, as a result of which the rod 13 is actuated and the second compression piston 7 is displaced counter to the movement of the contact piece 19. A return spring 17 is arranged in the vicinity of the joint 18 and, after a switch-on operation, returns the lever 14, the rod 13 and the second piston 7 to the position shown in the figure in the switched-on state.
Fließt während des Ausschaltvorgangs ein hoher Strom, so entsteht ein starker Lichtbogen zwischen den Kontaktstücken 19, 4. Im Ausschaltvorgang bewegt der Antrieb 9 das antreibbare Kontaktstück 19 in Richtung der Ausschaltstellung (in der unteren Hälfte der Figur dargestellt) . Der erste Kompressions- kolben 6 wird gemeinsam mit dem antreibbaren Kontaktstück 19 bewegt, wodurch sich das Volumen im Kompressionszylinder 5 verringert und gleichzeitig der Löschgasdruck im Kompressionszylinder 5 ansteigt. Im Heizvolumen 8 wird im Falle eines hohen Ausschaltstromes und eines entsprechend starken Lichtbogens sehr heißes Löschgas unter hohem Druck gespeichert. Somit kann kein Löschgas vom Kompressionsvolumen 20 in das Heizvolumen 8 strömen. Das erwärmte Löschgas strömt vom Heizvolumen 8 auf dem Lichtbogen zu, wodurch dieser im Stromnulldurchgang gelöscht werden kann.If a high current flows during the switch-off process, a strong arc arises between the contact pieces 19, 4. In the switch-off process, the drive 9 moves the drivable contact piece 19 in the direction of the switch-off position (shown in the lower half of the figure). The first compression piston 6 together with the drivable contact piece 19 moves, whereby the volume in the compression cylinder 5 decreases and at the same time the extinguishing gas pressure in the compression cylinder 5 increases. In the heating volume 8, very hot quenching gas is stored under high pressure in the event of a high breaking current and a correspondingly strong arc. Thus, no extinguishing gas can flow from the compression volume 20 into the heating volume 8. The heated quenching gas flows from the heating volume 8 on the arc, whereby it can be quenched in the zero current passage.
Im Falle eines schwachen Lichtbogens strömt das Löschgas vom Kompressionszylinder 5 in das Heizvolumen 8 und von hier auf den Lichtbogen zu, um diesen im Stromnulldurchgang zu löschen.In the event of a weak arc, the quenching gas flows from the compression cylinder 5 into the heating volume 8 and from there towards the arc in order to extinguish it at the current zero crossing.
Während der Ausschaltbewegung des antreibbaren Kontaktstücks 19 wird außerdem der zweite Kompressionskolben 7 gegensinnig zur Antriebsbewegung bewegt, wodurch sich das KompressionsVolumen 20 weiter verringert und ein zusätzlicher Druckanstieg des Löschgases im Kompressionszylinder 5 erreicht wird. Hierdurch wird zusätzlich die LöschgasStrömung erhöht und es wird ein hoher Löschgasdruck während der Ausschaltbewegung früher erreicht, wodurch der Lichtbogen besser gelöscht wird.During the switch-off movement of the drivable contact piece 19, the second compression piston 7 is also moved in the opposite direction to the drive movement, as a result of which the compression volume 20 is further reduced and an additional pressure increase of the extinguishing gas in the compression cylinder 5 is achieved. As a result, the quenching gas flow is additionally increased and a high quenching gas pressure is reached earlier during the switch-off movement, as a result of which the arc is extinguished better.
Die in der Figur 2 dargestellte weitere erfindungsgemäße Vorrichtung weist ein Zahnrad 22, eine erste Zahnstange 21 und eine zweite Zahnstange 23 auf.The further device according to the invention shown in FIG. 2 has a toothed wheel 22, a first toothed rack 21 and a second toothed rack 23.
Während eines Ausschaltvorgangs wird mittels der Bewegung der zweiten Zahnstange 23, die fest mit dem antreibbaren Kontaktstückträger 3 verbunden ist, das Zanhrad 22 gedreht, wodurch die erste Zahnstange 21 und der zweite Kompressionskolben 7 gegensinnig zur Antriebsbewegung bewegt werden. During a switch-off process, the gear wheel 22 is rotated by means of the movement of the second rack 23, which is fixedly connected to the drivable contact piece carrier 3, whereby the first rack 21 and the second compression piston 7 are moved in opposite directions to the drive movement.

Claims

Patentansprüche claims
1. Elektrischer Hochspannungsschalter mit einer Kontaktanordnung (19, 4), die zwei Kontaktstücke aufweist, von denen we- nigstens eines mittels eines Antriebes (9) antreibbar ist und mit einer Kolben-Zylinder-Anordnung (5, 6, 7) zur Erzeugung einer auf den Lichtbogen einwirkenden Löschmittelströmung d a d u r c h g e k e n n z e i c h n e t , daß ein Teil der Kolben-Zylinder-Anordnung (7) mittels des an- treibbaren Kontaktstücks (19) gegensinnig zur Ausschaltbewegung des Antriebes (9) bewegbar ist.1. Electrical high-voltage switch with a contact arrangement (19, 4) which has two contact pieces, at least one of which can be driven by means of a drive (9) and with a piston-cylinder arrangement (5, 6, 7) to produce one Extinguishing agent flow acting on the arc characterized in that part of the piston-cylinder arrangement (7) can be moved in opposite directions to the switching-off movement of the drive (9) by means of the drivable contact piece (19).
2. Elektrischer Hochspannungsschalter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Kolben-Zylinder-Anordnung (5, 6, 7) einen ersten Kompressionskolben (6), einen zweiten mittels des antreibbaren Kontaktstücks (19) bewegbaren Kompressionskolben (7) und einen feststehenden Zylinder (5) aufweist.2. Electrical high-voltage switch according to claim 1, characterized in that the piston-cylinder arrangement (5, 6, 7) a first compression piston (6), a second by means of the drivable contact piece (19) movable compression piston (7) and a stationary cylinder ( 5).
3. Elektrischer Hochspannungsschalter nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß eine der Antriebsseite zugewandte Stirnwand eines Heizraumes (8) mit konstantem Volumen den ersten Kompressionskolben (6) bildet .3. Electrical high-voltage switch according to claim 2, d a d u r c h g e k e n n z e i c h n e t that an end wall facing the drive side of a boiler room (8) with a constant volume forms the first compression piston (6).
4. Elektrischer Hochspannungsschalter nach Anspruch 2 oder 3, d a d u r c h g e k e n n z e i c h n e t , daß der zweite Kompressionskolben (7) ein Mehrfunktionsventil (10) aufweist.4. Electrical high-voltage switch according to claim 2 or 3, d a d u r c h g e k e n n z e i c h n e t that the second compression piston (7) has a multi-function valve (10).
5. Elektrischer Hochspannungsschalter nach Anspruch 2 oder einem der folgenden, d a d u r c h g e k e n n z e i c h n e t , daß der zweite Kompressionskolben (7) mittels einer mit dem an- treibbaren Kontaktstück (19) verbundenen Kulisse (16) und ei- nes von dieser angetriebenen ortsfest gelagerten Hebels (14) antreibbar ist.5. Electrical high-voltage switch according to claim 2 or one of the following, characterized in that the second compression piston (7) by means of a link (16) connected to the drivable contact piece (19) and egg- nes driven by this driven fixed lever (14).
6. Elektrischer Hochspannungsschalter nach Anspruch 5 d a d u r c h g e k e n n z e i c h n e t , daß am Umfang eines das antreibbare Kontaktstück tragenden Schalt-rohres (2) mindestens drei Kulissen (16) und ortsfest gelagerte Hebel (14) zum Antrieb des zweiten Kompressionskolbens (7) vorgesehen sind.6. Electrical high-voltage switch according to claim 5 d a d u r c h g e k e n n e e c h n e t that at least three scenes (16) and stationary levers (14) for driving the second compression piston (7) are provided on the circumference of a switch tube carrying the drivable contact piece.
7. Elektrischer Hochspannungsschalter nach Anspruch 2 oder einem der folgenden d a d u r c h g e k e n n z e i c h n e t , daß der zweite Kompressionskolben (7) mittels einer mit ihm ver- bundenen ersten Zahnstange (21) , eines ortsfest gelagerten7. Electrical high-voltage switch according to claim 2 or one of the following d a d u r c h g e k e n e z e i c h n e t that the second compression piston (7) by means of a first rack (21) connected to it, a stationary
Zahnrades (22) und einer mit einem antreibbaren Kontaktstückträger (3) verbundenen zweiten Zahnstange (23) antreibbar ist . Gear wheel (22) and a second toothed rack (23) connected to a drivable contact piece carrier (3) can be driven.
PCT/DE1998/002461 1997-08-18 1998-08-18 Electric high voltage switch WO1999012177A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98951192A EP0983598A1 (en) 1997-08-18 1998-08-18 Electric high voltage switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997136708 DE19736708C1 (en) 1997-08-18 1997-08-18 Electrical high voltage switch
DE19736708.9 1997-08-18

Publications (1)

Publication Number Publication Date
WO1999012177A1 true WO1999012177A1 (en) 1999-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/002461 WO1999012177A1 (en) 1997-08-18 1998-08-18 Electric high voltage switch

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EP (1) EP0983598A1 (en)
DE (1) DE19736708C1 (en)
WO (1) WO1999012177A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1879207A1 (en) * 2006-07-12 2008-01-16 ABB Technology AG Rack and pinion gear for a switch
US7726562B2 (en) 2000-08-22 2010-06-01 Walker Digital, Llc System for vending physical and information items
WO2012123032A1 (en) * 2011-03-17 2012-09-20 Abb Technology Ag Gas-insulated high-voltage circuit breaker
EP3404689A1 (en) * 2017-05-19 2018-11-21 General Electric Technology GmbH Circuit breaker comprising an improved compression chamber

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966973A1 (en) * 1969-03-14 1975-09-25 Siemens Ag Gas blast cct. breaker - has two hollow contact for gas outlet, one coupled rigidly to piston whose cylinder moves in opposite direction
US5561280A (en) * 1994-06-20 1996-10-01 Gec Alsthom T&D Ag Compressed gas-blast circuit breaker
US5578806A (en) * 1994-08-01 1996-11-26 Abb Management Ag Compressed gas-blast circuit breaker
EP0766278A2 (en) * 1995-09-30 1997-04-02 Asea Brown Boveri Ag Circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966973A1 (en) * 1969-03-14 1975-09-25 Siemens Ag Gas blast cct. breaker - has two hollow contact for gas outlet, one coupled rigidly to piston whose cylinder moves in opposite direction
US5561280A (en) * 1994-06-20 1996-10-01 Gec Alsthom T&D Ag Compressed gas-blast circuit breaker
US5578806A (en) * 1994-08-01 1996-11-26 Abb Management Ag Compressed gas-blast circuit breaker
EP0766278A2 (en) * 1995-09-30 1997-04-02 Asea Brown Boveri Ag Circuit breaker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7726562B2 (en) 2000-08-22 2010-06-01 Walker Digital, Llc System for vending physical and information items
EP1879207A1 (en) * 2006-07-12 2008-01-16 ABB Technology AG Rack and pinion gear for a switch
US7994442B2 (en) 2006-07-12 2011-08-09 Abb Technology Ag Rack gear for electrical circuit breaker
WO2012123032A1 (en) * 2011-03-17 2012-09-20 Abb Technology Ag Gas-insulated high-voltage circuit breaker
US8822868B2 (en) 2011-03-17 2014-09-02 Abb Technology Ag Gas-insulated high-voltage power circuit breaker
EP3404689A1 (en) * 2017-05-19 2018-11-21 General Electric Technology GmbH Circuit breaker comprising an improved compression chamber
US10755879B2 (en) 2017-05-19 2020-08-25 General Electric Technology Gmbh Circuit breaker comprising an improved compression chamber

Also Published As

Publication number Publication date
DE19736708C1 (en) 1999-05-20
EP0983598A1 (en) 2000-03-08

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