EP0809268A2 - High voltage circuit breaker with a nozzle made of insulating material - Google Patents
High voltage circuit breaker with a nozzle made of insulating material Download PDFInfo
- Publication number
- EP0809268A2 EP0809268A2 EP97250162A EP97250162A EP0809268A2 EP 0809268 A2 EP0809268 A2 EP 0809268A2 EP 97250162 A EP97250162 A EP 97250162A EP 97250162 A EP97250162 A EP 97250162A EP 0809268 A2 EP0809268 A2 EP 0809268A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping ring
- nozzle
- insulating material
- circuit breaker
- voltage circuit
- 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.)
- Granted
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Classifications
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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
- H01H33/70—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
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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
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
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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
- H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
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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
- H01H33/70—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
Definitions
- the invention relates to a high-voltage circuit breaker with a first and a second arcing contact piece, which are located coaxially opposite one another, at least the first of which can be driven by a switch drive in the course of a switching movement and which are separated by a separating path in the switched-off state and with a hollow cylindrical insulating material nozzle.
- which is connected to the first arcing contact piece and serves to blow an arc, possibly burning between the arcing contact pieces, with an extinguishing gas, and to which a component which is arranged on the side of the isolating path opposite the switch drive and which is to be driven in the switching case is coupled.
- a high-voltage circuit breaker is known with two coaxially opposing arcing contact pieces and with an insulating nozzle which is connected to a drivable arcing contact piece.
- the other arcing contact piece is driven by means of a deflecting gear by a drive element which in turn is connected to the switch drive and bridges the separating distance between the arcing contact pieces.
- the second drivable arcing contact piece can also be coupled to the switch drive by means of the insulating material nozzle. For this purpose, it is necessary to attach a transmission element to the insulating material nozzle itself.
- the insulating material nozzle consists of a plastic with limited strength and is exposed to the corrosive effects of the arc or hot extinguishing gases.
- the forces to be transmitted are very high when switching Large, so that the coupling must be mechanically stable.
- the present invention is therefore based on the object of providing a high-voltage circuit breaker of the type mentioned at the outset, which allows stable connection of a component to be driven to the insulating material nozzle.
- the insulating nozzle on its first end facing away from the drive side has a bead arranged on a lateral surface, behind which a first clamping ring pushed on from the first end of the insulating nozzle with temporary radial elastic deformation of the first clamping ring and / or the Is snapped end of the nozzle and that a second clamping ring is provided which supports the first clamping ring and / or the nozzle end to prevent unlocking of the first clamping ring and that the component to be driven can be coupled to at least one of the clamping rings.
- the nozzle end itself is protected against deformation on the one hand, and on the other hand the coupling of a component to be driven to the insulating nozzle is made possible without the need to drill holes in the nozzle which could possibly impair the stability of the nozzle body. Since all components have to be pushed on from the first end of the insulating nozzle, because the other end of the insulating nozzle has a larger diameter, elastic deformability must be provided, which allows the first clamping ring to be pushed behind the bulge of the insulating nozzle. After this clamping ring has been pushed on, the second clamping ring is put on and, if necessary, connected to the first clamping ring by means of screws or another type of fastening.
- the first clamping ring is pushed onto the outside of the nozzle.
- the first clamping ring is either widened and / or the first end of the nozzle is compressed radially. This is made possible by radial slots at the end of the nozzle.
- the second clamping ring is put on, which in this case has to prevent the radial compression of the nozzle end or the expansion of the first clamping ring.
- the second clamping ring has a nozzle which is either inserted into the interior of the nozzle end or is inserted into a groove running around the end face of the nozzle body. The second clamping ring prevents the first clamping ring from being pushed over the bead and thus being able to be unlocked.
- the first clamping ring can be fastened by expanding the nozzle at its end or by compressing the first clamping ring.
- the second clamping ring is either also inserted into a circumferential groove made on the end face of the insulating material nozzle or is placed on the outside of the nozzle body.
- the second clamping ring allows, in particular, the coupling of a transmission element, in particular an insulating rod, which can transmit a drive movement over the separation path over to the second arcing contact piece.
- a deflecting gear in the form of a lever can be provided behind the second arcing contact piece, which lever can be actuated by the insulating rod, so that the second arcing contact piece is moved away from the first arcing contact piece when it is switched off.
- FIG. 1 shows a first arcing contact piece 1 in a half section and a second arcing contact piece 2, the first arcing contact piece 1 being designed as a tulip contact and the second arcing contact piece 2 as a contact pin.
- the first arcing contact 1 is connected to a switch drive, not shown, which moves the first arcing contact 1 in the direction of arrow 13 during the switch-off process.
- the first arcing contact 1 is connected to a metallic hollow cylinder 14 which carries an insulating nozzle 3.
- Another insulating material nozzle body 15 is placed directly on the first arcing contact piece 1. When switching, the insulating material nozzle 3 moves together with the first arcing contact piece 1.
- first and the second arcing contact pieces 1, 2 are separated from one another, then in the isolating path 4 an arc is drawn between them, which expands the extinguishing gas located there, for example SF 6 .
- the hot quenching gas can flow out into a heating chamber 16, from which it flows back at a suitable time, for example directly after a current zero crossing of the current to be switched, in order to blow the arc.
- the continuous current is carried by the continuous current contact pieces 17, 18.
- the insulating material nozzle 3 bridges the isolating section 4 both in the switched-on state and in the switched-off state.
- the body of the insulating material nozzle is surrounded by a field electrode 5, which is pressed towards the isolating section by means of a spring 19, in order to ensure a dielectric favorable design of the electrical field between the contacts in the switched-on state.
- the spring 19 is supported on the first clamping ring 8, which is attached to the first end 6 of the insulating nozzle 3.
- the spring 19 could also be supported on an outer bead of the insulating nozzle itself.
- the field electrode 5 is pushed back so far by the continuous current contact piece 17 that this continuous current contact piece can come into contact with the other continuous current contact piece 18.
- the field electrode 5 is guided and contacted in the continuous current contact piece 17 by means of a sliding contact.
- a drive rod 20 is also coupled to the first end 6 of the insulating material nozzle 3 and actuates a deflection gear in the form of a two-armed lever 21, to the other arm of which the second arcing contact piece 2 is coupled.
- first clamping ring 8 which can be pushed over the bead 7 from the first end 6 of the insulating nozzle 3 and engages behind the bead 7. This is achieved either by an elastic design of the nozzle, for example by radial slots at the end of the nozzle, or by slitting the first clamping ring 8.
- a second clamping ring 10 is fastened to the first clamping ring 8, which stabilizes both the nozzle body 3 and the first clamping ring 8 in such a way that no elastic deformation and therefore no Sliding over the first clamping ring 8 over the bead 7 is more possible.
- a drive rod 20 can then be coupled to the second clamping ring 10 or the first clamping ring 8 in a mechanically highly loadable manner.
- the second clamping ring 10 has a connecting piece 11 which engages in the groove 12 on the end face of the nozzle body 3 and prevents radial deformation of the nozzle body both towards the inside and towards the outside.
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- Circuit Breakers (AREA)
Abstract
Bei einem Hochspannungs-Leistungsschalter mit einer Isolierstoffdüse (3) soll an deren erstem, der Antriebsseite abgewandten Ende (6) ein im Schaltfall anzutreibendes Bauteil angekoppelt werden, das auf der der Antriebsseite gegenüberliegenden Seite der Trennstrecke angeordnet ist. Zu diesem Zweck weist die Isolierstoffdüse eine umlaufende Wulst (7) auf, über die ein erster Spannring (8) unter elastischer Verformung des Spannrings oder des Düsenendes geschoben werden kann. Danach wird ein zweiter Spannring (10) am Düsenende befestigt, der sowohl den ersten Spannring (8) als auch das Düsenende stützt und somit eine Entriegelung des ersten Spannrings (8) verhindert. In the case of a high-voltage circuit breaker with an insulating nozzle (3), a component to be driven in the switching case, which is arranged on the side of the isolating section opposite the drive side, is to be coupled to its first end (6) which faces away from the drive side. For this purpose, the insulating material nozzle has a circumferential bead (7) over which a first clamping ring (8) can be pushed while the clamping ring or the nozzle end is deformed elastically. A second clamping ring (10) is then attached to the nozzle end, which supports both the first clamping ring (8) and the nozzle end and thus prevents the first clamping ring (8) from being unlocked.
Description
Die Erfindung bezieht sich auf einen Hochspannungs-Leistungsschalter mit einem ersten und einem zweiten, einander koaxial gegenüberstehenden Lichtbogenkontaktstück, von denen wenigstens das erste durch einen Schalterantrieb im Zuge einer Schaltbewegung antreibbar ist und die im Ausschaltzustand durch eine Trennstrecke getrennt sind sowie mit einer hohlzylindrischen Isolierstoffdüse, die mit dem ersten Lichtbogenkontaktstück verbunden ist und der Beblasung eines gegebenenfalls zwischen den Lichtbogenkontaktstücken brennenden Lichtbogens mit einem Löschgas dient, und an die ein auf der dem Schalterantrieb gegenüberliegenden Seite der Trennstrecke angeordnetes, im Schaltfall anzutreibendes Bauteil angekoppelt ist.The invention relates to a high-voltage circuit breaker with a first and a second arcing contact piece, which are located coaxially opposite one another, at least the first of which can be driven by a switch drive in the course of a switching movement and which are separated by a separating path in the switched-off state and with a hollow cylindrical insulating material nozzle. which is connected to the first arcing contact piece and serves to blow an arc, possibly burning between the arcing contact pieces, with an extinguishing gas, and to which a component which is arranged on the side of the isolating path opposite the switch drive and which is to be driven in the switching case is coupled.
Aus der FR 2 491 675 ist ein Hochspannungs-Leistungsschalter bekannt mit zwei einander koaxial gegenüberstehenden Lichtbogenkontaktstücken und mit einer Isolierstoffdüse, die mit einem antreibbaren Lichtbogenkontaktstück verbunden ist. Das andere Lichtbogenkontaktstück wird mittels eines Umlenkgetriebes durch ein Antriebselement angetrieben, das seinerseits mit dem Schalterantrieb verbunden ist und die Trennstrecke zwischen den Lichtbogenkontaktstücken überbrückt. Die Ankopplung des zweiten antreibbaren Lichtbogenkontaktstücks an den Schalterantrieb kann auch mittels der Isolierstoffdüse erfolgen. Zu diesem Zweck ist es notwendig, an der Isolierstoffdüse selbst ein Übertragungselement zu befestigen. Dies ist schwierig, da die Isolierstoffdüse aus einem Kunststoff mit begrenzter Festigkeit besteht und den korrosiven Einflüssen des Lichtbogens bzw. heißer Löschgase ausgesetzt ist. Außerdem sind die zu übertragenden Kräfte im Schaltfall sehr groß, so daß die Ankopplung entsprechend mechanisch stabil sein muß.From
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Hochspannungs-Leistungsschalter der eingangs genannten Art zu schaffen, der eine stabile Ankopplung eines anzutreibenden Bauteils an die Isolierstoffdüse erlaubt.The present invention is therefore based on the object of providing a high-voltage circuit breaker of the type mentioned at the outset, which allows stable connection of a component to be driven to the insulating material nozzle.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Isolierstoffdüse an ihrem der Antriebsseite abgewandten ersten Ende eine an einer Mantelfläche angeordnete Wulst aufweist, hinter der ein von dem ersten Ende der Isolierstoffdüse her aufgeschobener erster Spannring unter vorübergehender radialer elastischer Verformung des ersten Spannrings und/oder des Düsenendes einschnappbar ist und daß ein zweiter Spannring vorgesehen ist, der den ersten Spannring und/oder das Düsenende zur Verhinderung der Entriegelung des ersten Spannrings stützt und daß das anzutreibende Bauteil an wenigstens einen der Spannringe ankoppelbar ist.The object is achieved in that the insulating nozzle on its first end facing away from the drive side has a bead arranged on a lateral surface, behind which a first clamping ring pushed on from the first end of the insulating nozzle with temporary radial elastic deformation of the first clamping ring and / or the Is snapped end of the nozzle and that a second clamping ring is provided which supports the first clamping ring and / or the nozzle end to prevent unlocking of the first clamping ring and that the component to be driven can be coupled to at least one of the clamping rings.
Durch erfindungsgemäße Konstruktion wird einerseits das Düsenende selbst gegen Verformung geschützt, andererseits wird die Ankopplung eines anzutreibenden Bauteils an die Isolierstoffdüse ermöglicht, ohne daß Bohrungen in die Düse eingebracht werden müssen, die die Stabilität des Düsenkörpers gegebenenfalls beeinträchtigen konnten. Da alle Bauteile vom ersten Ende der Isolierstoffdüse her aufgeschoben werden müssen, weil das andere Ende der Isolierstoffdüse einen größeren Durchmesser aufweist, muß eine elastische Verformbarkeit vorgesehen werden, die das Aufschieben des ersten Spannrings hinter die Wulst der Isolierstoffdüse erlaubt. Nachdem dieser Spannring aufgeschoben ist, wird der zweite Spannring aufgesetzt und gegebenenfalls mit dem ersten Spannring mittels Schrauben oder durch eine andere Befestigungungsart verbunden. Wenn die Wulst an der Außenseite der Isolierstoffdüse angeordnet ist, wird auch der erste Spannring außen auf die Düse aufgeschoben. Der erste Spannring wird hierzu entweder aufgeweitet und/oder das erste Ende der Düse wird radial zusammengedrückt. Dies wird durch radiale Schlitze am Düsenende ermöglicht. Danach wird der zweite Spannring aufgesetzt, der in diesem Fall das radial Zusammendrücken des Düsenendes oder das Aufweiten des ersten Spannrings verhindern muß. Zu diesem Zweck weist der zweite Spannring einen Stutzen auf, der entweder in das Innere des Düsenendes hineingesteckt oder in eine an der Stirnseite des Düsenkörpers umlaufende Nut eingeschoben wird. Der zweite Spannring verhindert, daß der erste Spannring über die Wulst geschoben und damit entriegelt werden kann.With the construction according to the invention, the nozzle end itself is protected against deformation on the one hand, and on the other hand the coupling of a component to be driven to the insulating nozzle is made possible without the need to drill holes in the nozzle which could possibly impair the stability of the nozzle body. Since all components have to be pushed on from the first end of the insulating nozzle, because the other end of the insulating nozzle has a larger diameter, elastic deformability must be provided, which allows the first clamping ring to be pushed behind the bulge of the insulating nozzle. After this clamping ring has been pushed on, the second clamping ring is put on and, if necessary, connected to the first clamping ring by means of screws or another type of fastening. If the bead is on the outside of the insulating nozzle is arranged, the first clamping ring is pushed onto the outside of the nozzle. For this purpose, the first clamping ring is either widened and / or the first end of the nozzle is compressed radially. This is made possible by radial slots at the end of the nozzle. Then the second clamping ring is put on, which in this case has to prevent the radial compression of the nozzle end or the expansion of the first clamping ring. For this purpose, the second clamping ring has a nozzle which is either inserted into the interior of the nozzle end or is inserted into a groove running around the end face of the nozzle body. The second clamping ring prevents the first clamping ring from being pushed over the bead and thus being able to be unlocked.
Ist die Wulst an der Innenseite des Düsenkörpers, an der inneren Mantelfläche angeordnet, so kann der erste Spannring dadurch befestigt werden, daß die Düse an ihrem Ende aufgeweitet wird, oder daß der erste Spannring zusammengedrückt wird. Der zweite Spannring wird in diesem Fall entweder ebenfalls in eine an der Stirnseite der Isolierstoffdüse eingebrachte umlaufende Nut eingeschoben oder außen auf den Düsenkörper aufgesetzt. Der zweite Spannring erlaubt insbesondere die Ankopplung eines Übertragungselementes, insbesondere einer Isolierstoffstange, die eine Antriebsbewegung über die Trennstrecke hinüber zu dem zweiten Lichtbogenkontaktstück übertragen kann. Beispielsweise kann von dem ersten Lichtbogenkontaktstück aus gesehen hinter dem zweiten Lichtbogenkontaktstück ein Umlenkgetriebe in Form eines Hebels vorgesehen sein, der durch die Isolierstoffstange betätigbar ist, so daß das zweite Lichtbogenkontaktstück im Ausschaltfall von dem ersten Lichtbogenkontaktstück wegbewegt wird.If the bead is arranged on the inside of the nozzle body, on the inner circumferential surface, the first clamping ring can be fastened by expanding the nozzle at its end or by compressing the first clamping ring. In this case, the second clamping ring is either also inserted into a circumferential groove made on the end face of the insulating material nozzle or is placed on the outside of the nozzle body. The second clamping ring allows, in particular, the coupling of a transmission element, in particular an insulating rod, which can transmit a drive movement over the separation path over to the second arcing contact piece. For example, seen from the first arcing contact piece, a deflecting gear in the form of a lever can be provided behind the second arcing contact piece, which lever can be actuated by the insulating rod, so that the second arcing contact piece is moved away from the first arcing contact piece when it is switched off.
Es ist auch möglich, an einen der Spannringe eine Feldelektrode anzukoppeln, die im Falle einer Schaltbewegung mitbewegt werden soll.It is also possible to couple a field electrode to one of the clamping rings, which is to be moved in the event of a switching movement.
Die beschriebenen vorteilhaften Ausgestaltungen der Erfindung bilden Gegenstände der Unteransprüche.The described advantageous embodiments of the invention form the subject of the dependent claims.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung gezeigt und anschließend beschrieben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and then described.
Dabei zeigt
- die
Figur 1 schematisch in einem Längsschnitt eine Hälfte einer Unterbrechereinheit eines Leistungsschalters im Ausschaltzustand, Figur 2 das erste Ende der Isolierstoffdüse mit dem ersten und dem zweiten Spannring.
- 1 shows schematically in a longitudinal section one half of an interrupter unit of a circuit breaker in the open state,
- Figure 2 shows the first end of the insulating nozzle with the first and the second clamping ring.
Die Figur 1 zeigt ein erstes Lichtbogenkontaktstück 1 in einem Halbschnitt sowie ein zweites Lichtbogenkontaktstück 2, wobei das erste Lichtbogenkontaktstück 1 als Tulpenkontakt und das zweite Lichtbogenkontaktstück 2 als Kontaktstift ausgebildet ist.FIG. 1 shows a first arcing
Das erste Lichtbogenkontaktstück 1 ist mit einem nicht dargestellten Schalterantrieb verbunden, der das erste Lichtbogenkontaktstück 1 beim Ausschaltvorgang in Richtung des Pfeiles 13 bewegt.The first arcing
Das erste Lichtbogenkontaktstück 1 ist mit einem metallischen Hohlzylinder 14 verbunden, der eine Isolierstoffdüse 3 trägt. Ein weiterer Isolierstoffdüsenkörper 15 ist direkt auf das erste Lichtbogenkontaktstück 1 aufgesetzt. Im Schaltfall bewegt sich die Isolierstoffdüse 3 mit dem ersten Lichtbogenkontaktstück 1 zusammen.The first arcing
Wenn das erste und das zweite Lichtbogenkontaktstück 1, 2 voneinander getrennt werden, so wird in der Trennstrecke 4 zwischen diesen ein Lichtbogen gezogen, der das dort befindliche Löschgas, beispielsweise SF6, expandiert. Das heiße Löschgas kann in einen Heizraum 16 abströmen, aus dem es zu geeigneter Zeit, beispielsweise direkt nach einem Stromnulldurchgang des zu schaltenden Stromes, zurückfließt, um den Lichtbogen zu beblasen.If the first and the second arcing
Im Einschaltzustand wird der Dauerstrom von den Dauerstromkontaktstücken 17, 18 getragen.In the switched-on state, the continuous current is carried by the continuous
Die Isolierstoffdüse 3 überbrückt die Trennstrecke 4 sowohl im Einschaltzustand als auch im Ausschaltzustand. Auf der dem Antrieb gegenüberliegenden Seite der Trennstrecke 4 ist der Körper der Isolierstoffdüse von einer Feldelektrode 5 umgeben, die mittels einer Feder 19 zur Trennstrecke hin gedrückt wird, um dort im Einschaltzustand für eine dielektrisch günstige Gestaltung des elektrischen Feldes zwischen den Kontakten zu sorgen. Die Feder 19 stützt sich an dem ersten Spannring 8 ab, der am ersten Ende 6 der Isolierstoffdüse 3 befestigt ist. Die Feder 19 könnte sich auch an einer Außenwulst der Isolsierstoffdüse selbst abstützen.The insulating
Im Einschaltzustand ist die Feldelektrode 5 durch das Dauerstromkontaktstück 17 soweit zurückgedrückt, daß dieses Dauerstromkontaktstück in Kontakt mit dem anderen Dauerstromkontaktstück 18 treten kann. Die Feldelektrode 5 ist mittels eines Gleitkontaktes in dem Dauerstromkontaktstück 17 geführt und kontaktiert.In the switched-on state, the field electrode 5 is pushed back so far by the continuous
An das erste Ende 6 der Isolierstoffdüse 3 ist außerdem eine Antriebsstange 20 angekoppelt, die ein Umlenkgetriebe in Form eines zweiarmigen Hebels 21 betätigt, an dessen anderem Arm das zweite Lichtbogenkontaktstück 2 angekoppelt ist.A
Auf diese Weise wird erreicht, daß eine Bewegung des ersten Lichtbogenkontaktstücks in Richtung des Pfeiles 13 gleichzeitig eine Bewegung des zweiten Lichtbogenkontaktstücks 2 in Richtung des Pfeiles 22 bewirkt.In this way it is achieved that a movement of the first arcing contact piece in the direction of
Da bei der Betätigung eines derartigen Hochspannungs-Leistungsschalters sehr große Beschleunigungen erreicht werden müssen und entsprechend große Beschleunigungskräfte übertragen werden, ist für die Ankopplung an das erste Ende der Isolierstoffdüse 3 eine hohe mechanische Stabilität erforderlich.Since very large accelerations have to be achieved when such a high-voltage circuit breaker is actuated and correspondingly large acceleration forces are transmitted, high mechanical stability is required for the coupling to the first end of the
Diese wird erreicht durch einen ersten Spannring 8, der über die Wulst 7 vom ersten Ende 6 der Isolierstoffdüse 3 hinübergeschoben werden kann und hinter der Wulst 7 einrastet. Dies wird entweder durch eine elastische Gestaltung der Düse, beispielsweise durch radiale Schlitze am Düsenende oder durch eine Schlitzung des ersten Spannringes 8 erreicht.This is achieved by a
Um nach dem Einrasten des ersten Spannrings 8 hinter der Wulst 7 eine Entriegelung zu vermeiden, wird ein zweiter Spannring 10 an dem ersten Spannring 8 befestigt, der sowohl den Düsenkörper 3 als auch den ersten Spannring 8 so stabilisiert, daß keine elastische Verformung und somit kein Hinübergleiten des ersten Spannrings 8 über die Wulst 7 mehr möglich ist.In order to prevent unlocking after the
An den zweiten Spannring 10 oder den ersten Spannring 8 kann dann eine Antriebsstange 20 in mechanisch hochbelastbarer Weise angekoppelt werden.A
Der zweite Spannring 10 weist einen Stutzen 11 auf, der in die Nut 12 an der Stirnseite des Düsenkörpers 3 eingreift und eine radiale Verformung des Düsenkörpers sowohl zur Innenals auch zur Außenseite hin verhindert.The
Claims (6)
dadurch gekennzeichnet, daß
die Isolierstoffdüse (3) an ihrem der Antriebsseite abgewandten ersten Ende (6) eine an einer Mantelfläche angeordnete Wulst aufweist, hinter der ein von dem ersten Ende (6) der Isolierstoffdüse (3) her aufgeschobener erster Spannring (8) unter vorübergehender radialer elastischer Verformung des ersten Spannrings (8) und/oder des Düsenendes (6) einrastbar ist und daß ein zweiter Spannring (10) vorgesehen ist, der den ersten Spannring (8) und/oder das Düsenende (6) zur Verhinderung der Entriegelung des ersten Spannrings (8) stützt und daß das anzutreibende Bauteil an wenigstens einen der Spannringe (8, 10) ankoppelbar ist.High-voltage circuit breaker with a first and a second, arcing contact piece (1, 2), of which at least the first (1) can be driven by a switch drive in the course of a switching movement and which are separated by a separating path (4) in the off state and with a hollow cylindrical insulating material nozzle (3), which is connected to the first arcing contact piece (1) and serves to blow an arc, possibly burning between the arcing contact pieces, with an extinguishing gas, and to which is arranged a side of the isolating section (4) opposite the switch drive, component to be driven in the switching case is coupled,
characterized in that
the insulating material nozzle (3) has, on its first end (6) facing away from the drive side, a bulge arranged on a lateral surface, behind which a first clamping ring (8) pushed open from the first end (6) of the insulating material nozzle (3) with temporary radial elastic deformation of the first clamping ring (8) and / or of the nozzle end (6) can be snapped in and that a second clamping ring (10) is provided which prevents the first clamping ring (8) and / or the nozzle end (6) from being released from the first clamping ring ( 8) supports and that the component to be driven can be coupled to at least one of the clamping rings (8, 10).
dadurch gekennzeichnet, daß
das erste Ende (6) der Isolierstoffdüse (3) radiale, am Umfang der Düse verteilte Schlitze aufweist.High-voltage circuit breaker according to claim 1,
characterized in that
the first end (6) of the insulating material nozzle (3) has radial slots distributed around the circumference of the nozzle.
dadurch gekennzeichnet, daß
der zweite Spannring (10) einen Stutzen (11) aufweist, der das erste Ende (6) der Isolierstoffdüse (3) umfaßt.High-voltage circuit breaker according to claim 2,
characterized in that
the second clamping ring (10) has a connecting piece (11) which comprises the first end (6) of the insulating material nozzle (3).
dadurch gekennzeichnet, daß
der zweite Spannring (10) einen Stutzen (11) aufweist, der in das erste Ende (6) der Isolierstoffdüse (3) einschiebbar ist.High-voltage circuit breaker according to claim 2,
characterized in that
the second clamping ring (10) has a socket (11) which can be inserted into the first end (6) of the insulating material nozzle (3).
dadurch gekennzeichnet, daß
der zweite Spannring (10) einen Stutzen (11) aufweist, der in eine umlaufende Nut (12) an der Stirnseite des ersten Endes (6) der Isolierstoffdüse (3) einschiebbar ist.High-voltage circuit breaker according to claim 2,
characterized in that
the second clamping ring (10) has a connecting piece (11) which can be inserted into a circumferential groove (12) on the end face of the first end (6) of the insulating material nozzle (3).
dadurch gekennzeichnet, daß
der erste Spannring (8) durch einen radialen Schlitz aufweitbar ausgeführt ist.High-voltage circuit breaker according to claim 1 or one of the following,
characterized in that
the first clamping ring (8) is designed to be expandable through a radial slot.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29609909U | 1996-05-24 | ||
| DE29609909U DE29609909U1 (en) | 1996-05-24 | 1996-05-24 | High-voltage circuit breaker with an insulating nozzle |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0809268A2 true EP0809268A2 (en) | 1997-11-26 |
| EP0809268A3 EP0809268A3 (en) | 1998-12-02 |
| EP0809268B1 EP0809268B1 (en) | 2004-08-18 |
Family
ID=8024802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97250162A Expired - Lifetime EP0809268B1 (en) | 1996-05-24 | 1997-05-23 | High voltage circuit breaker with a nozzle made of insulating material |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0809268B1 (en) |
| DE (2) | DE29609909U1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024211A1 (en) * | 1999-09-30 | 2001-04-05 | Siemens Aktiengesellschaft | High voltage circuit breaker |
| EP2325859A1 (en) | 2009-11-24 | 2011-05-25 | ABB Technology AG | Gas-isolated high voltage switch |
| WO2016151002A1 (en) * | 2015-03-25 | 2016-09-29 | Siemens Aktiengesellschaft | Insulating nozzle and electrical switching device comprising the insulating nozzle |
| CN109192597A (en) * | 2018-10-11 | 2019-01-11 | 西安西电开关电气有限公司 | Breaker and its double acting transmission device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29609909U1 (en) * | 1996-05-24 | 1996-08-22 | Siemens AG, 80333 München | High-voltage circuit breaker with an insulating nozzle |
| DE19631323C1 (en) * | 1996-08-01 | 1997-10-16 | Aeg Energietechnik Gmbh | Pressure gas switch e.g. for outdoor switching stations with porcelain insulators |
| EP1686602B2 (en) * | 2005-02-01 | 2021-04-07 | ABB Power Grids Switzerland AG | Blast nozzle mounting means for electrical circuit breaker |
| DE102019214432B4 (en) * | 2019-09-23 | 2024-02-08 | Siemens Energy Global GmbH & Co. KG | Assembly for a high-voltage circuit breaker and corresponding high-voltage circuit breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2491675A1 (en) * | 1980-10-07 | 1982-04-09 | Alsthom Atlantique | Gas blast type high voltage circuit breaker - has operating piston moving contact ring axially into set of contacts held on hemispherical support |
| CH675175A5 (en) * | 1987-10-27 | 1990-08-31 | Bbc Brown Boveri & Cie | |
| DE29609909U1 (en) * | 1996-05-24 | 1996-08-22 | Siemens AG, 80333 München | High-voltage circuit breaker with an insulating nozzle |
-
1996
- 1996-05-24 DE DE29609909U patent/DE29609909U1/en not_active Expired - Lifetime
-
1997
- 1997-05-23 EP EP97250162A patent/EP0809268B1/en not_active Expired - Lifetime
- 1997-05-23 DE DE59711853T patent/DE59711853D1/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024211A1 (en) * | 1999-09-30 | 2001-04-05 | Siemens Aktiengesellschaft | High voltage circuit breaker |
| EP2325859A1 (en) | 2009-11-24 | 2011-05-25 | ABB Technology AG | Gas-isolated high voltage switch |
| CN102074406A (en) * | 2009-11-24 | 2011-05-25 | Abb技术有限公司 | Gas-insulated high-voltage switch |
| US8263892B2 (en) | 2009-11-24 | 2012-09-11 | Abb Technology Ag | Gas-insulated high-voltage switch |
| CN102074406B (en) * | 2009-11-24 | 2015-06-17 | Abb技术有限公司 | Gas-insulated high-voltage switch |
| WO2016151002A1 (en) * | 2015-03-25 | 2016-09-29 | Siemens Aktiengesellschaft | Insulating nozzle and electrical switching device comprising the insulating nozzle |
| CN109192597A (en) * | 2018-10-11 | 2019-01-11 | 西安西电开关电气有限公司 | Breaker and its double acting transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0809268A3 (en) | 1998-12-02 |
| DE29609909U1 (en) | 1996-08-22 |
| DE59711853D1 (en) | 2004-09-23 |
| EP0809268B1 (en) | 2004-08-18 |
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