EP1306868B1 - High voltage power circuit breaker with insulating nozzle - Google Patents
High voltage power circuit breaker with insulating nozzle Download PDFInfo
- Publication number
- EP1306868B1 EP1306868B1 EP02090369A EP02090369A EP1306868B1 EP 1306868 B1 EP1306868 B1 EP 1306868B1 EP 02090369 A EP02090369 A EP 02090369A EP 02090369 A EP02090369 A EP 02090369A EP 1306868 B1 EP1306868 B1 EP 1306868B1
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- EP
- European Patent Office
- Prior art keywords
- channel
- arcing contact
- insulating nozzle
- arc
- nozzle
- 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.)
- Revoked
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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
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting 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
- H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
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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
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
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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
Definitions
- the invention relates to an insulating nozzle for one High voltage circuit breakers, which at least during a switch-off one between two arcing contact pieces formed switching path surrounds, the insulating nozzle a through channel with a cylindrical Has area that of a relative to the insulating nozzle Movable arcing contact piece during the switch-off process is damned.
- Such a high-voltage circuit breaker is known, for example, from US 4,342,890.
- the arcing contact pieces are separated from one another in the axial direction during the switching-off process, whereupon an arcing arises between them in the switching path in many switching cases.
- This arc heats up the existing extinguishing gas, usually SF 6 , and flows into a boiler room, where it is temporarily stored. From there, the extinguishing gas, which is under high pressure, then reaches the switching path when the current passes through zero and the arc is extinguished accordingly in order to cool it and to prevent the arc from reigniting.
- the insulating material nozzle is intended to align the flow of extinguishing gas, to accelerate the flow of extinguishing gas and to control it.
- the through-channel of the insulating material nozzle is closed by an arcing contact piece until the extinguishing position is reached, so that a high quenching gas pressure can initially build up in the switching path, which results in an intensive flow after opening the through-channel.
- a high-voltage circuit breaker is derived from US Pat. No. 5,483,210 out, which with an insulating nozzle Is provided.
- the insulating material nozzle surrounds the Switching distance between two relatively movable Arcing contacts.
- the insulating material nozzle a nozzle constriction, which during a switching operation through one of the arcing contacts, which is relative is movable to the insulating material nozzle, can be damned. By damaging this, the arc becomes an under increased pressure standing gas cushion generated. With the release the nozzle constriction can this gas through the nozzle constriction flow out and cool the arc. additionally this flow is from a piston cylinder assembly supported.
- a cylinder is relative to one Movable piston, which blows gas against the arc becomes.
- the relative movement of the piston-cylinder arrangement is determined by driven the switch contact pieces. Due to the a drive with an increased Drive power can be used.
- the present invention has for its object a Creating an insulating nozzle for a high voltage switch which is increased blowing of the arc with compressed Gas allowed.
- the object is achieved in that the Length of the cylindrical area at least twice as large is like its diameter.
- the inventive design of an insulating material nozzle is guaranteed that over a sufficiently long Maintenance of the cylindrical area is maintained for a period of time becomes. This will make the time interval for heating up and compressing the gas by the arc increases. Even if the cylindrical area is extended compared to the known solutions, the arc is still in Blow with gas for a sufficiently long period of time.
- This also provides a good seal for the through-channel reached by the first arcing contact piece as long as the shaft the cylindrical region of the through-channel blocked.
- a certain gap width may be provided, however, this gap is so narrow that there is little quenching gas is lost, especially because at least initially a switching off the through channel on a large length is blocked, so that the extinguishing gas over a large length must flow through the gap to enter an expansion space to get. This is by means of a known nozzle practically inaccessible with a local constriction.
- the length is greater is as three or four times the diameter of the cylindrical Range.
- the passage channel only opens after one large stroke of the contact pin, so that before training the extinguishing gas flow over a long time a high Can form quenching gas pressure in the heating or compression room.
- a further advantageous embodiment of the invention provides before that between the end piece and the shaft of the first Arc contact piece provided a conical transition area is.
- the through-channel on the part facing away from the second arcing contact A conical extension at the end of the cylindrical area having.
- the figure schematically shows part of the interrupter unit of a high-voltage circuit breaker according to the invention.
- an insulating circuit breaker housing 18 for example consists of porcelain or a composite material, are two arcing contact pieces 1,2 coaxially opposite.
- the first arcing contact 1 is stationary or separately drivable, while the second arcing contact piece 2, which has the shape of a tulip contact has, in the direction of arrow 14 for execution an opening movement and in the opposite direction to the execution a switch-on movement can be driven.
- the second arcing contact piece 2 is an insulating body 3 firmly connected in the form of an insulating material nozzle, which consists of polytetrafluoroethylene.
- the insulating material nozzle 3 has a through channel 6, which in the on state penetrated and blocked by the first arcing contact 1 is.
- Radially outside the insulating nozzle 3 and this surrounding are a first continuous current contact piece 13 and a second continuous current contact piece 12 arranged in the on state are also in contact with each other and the Carry rated current.
- a boiler room 16 is formed, which is via a channel 15 with the through channel 6 of the nozzle or between the Arcing contact pieces 1,2 connected arc space connected is.
- an arc 4 can arise between the arcing contact pieces 1 , 2, which heats up the quenching gas located in the arcing chamber 5, for example SF 6 , and thus expands it.
- the quenching gas can then flow into the heating chamber 16 and is temporarily stored there until the arc 4 extinguishes due to a zero crossing of the current to be switched and the quenching gas flows back from the heating chamber 16 through the duct 15 into the arc chamber 5 in order to bring about rapid cooling there and thus prevent the backfire of an arc 4.
- the through channel 6 is in an essential area 17 of its length cylindrical, so that on the one hand the Damage by the first arcing contact 1 at Switching off continues until there is sufficient extinguishing gas pressure is reached in the arc room 5 or in the heating room 16 and that, on the other hand, there is a large axial overlap of the Shaft 8 with the through channel 6 to an effective seal leads.
- the second phase of the switch-off movement begins with the separation of the first arcing contact 1 from the second Arcing contact piece 2. Now arises between the arcing contact pieces 1 and 2 an arc that detects the gas in the Arc room 5 heats up and allows expansion. To this At a point in time or somewhat later, the shaft 8 leaves the cylindrical one Area 17 of the through channel 6. This will now only blocked by the end piece 7, so that part of the expanded extinguishing gas the gap between the end piece 7 and the cylindrical region 17 of the through-channel 6 can flow through and so the dielectric problems in the Gap reduced.
- the extinguishing gas flowing through causes, among other things, the dielectric Solidification of the space between the end piece 7 and the insulating body 3.
Description
Die Erfindung bezieht sich auf eine Isolierstoffdüse für einen Hochspannungsleistungsschalter, welche zumindest während eines Ausschaltvorganges eine zwischen zwei Lichtbogenkontaktstücken gebildete Schaltstrecke umgibt, wobei die Isolierstoffdüse einen Durchgangskanal mit einem zylindrischen Bereich aufweist, der von einem relativ zur Isolierstoffdüse bewegbaren Lichtbogenkontaktstück während des Ausschaltvorganges verdämmt ist.The invention relates to an insulating nozzle for one High voltage circuit breakers, which at least during a switch-off one between two arcing contact pieces formed switching path surrounds, the insulating nozzle a through channel with a cylindrical Has area that of a relative to the insulating nozzle Movable arcing contact piece during the switch-off process is damned.
Ein derartiger Hochspannungsleistungsschalter ist beispielsweise aus der US 4 342 890 bekannt. Bei einem derartigen Schalter werden während des Ausschaltvorganges die Lichtbogenkontaktstücke in axialer Richtung voneinander getrennt, worauf sich in vielen Schaltfällen ein Lichtbogen zwischen diesen in der Schaltstrecke ausbildet. Durch diesen Lichtbogen wird das vorhandene Löschgas, üblicherweise SF6, aufgeheizt und strömt in einen Heizraum, wo es zwischengespeichert wird. Von dort gelangt das unter hohem Druck stehende Löschgas dann bei einem Stromnulldurchgang und entsprechendem Verlöschen des Lichtbogens in den Lichtbogenraum zur Schaltstrecke, um diese zu kühlen und eine Rückzündung des Lichtbogens zu verhindern. Die Isolierstoffdüse ist zur Ausrichtung des Löschgasstromes, zur Beschleunigung des Löschgasstromes und zu seiner Steuerung vorgesehen. Insbesondere ist der Durchgangskanal der Isolierstoffdüse bis zum Erreichen der Löschposition durch ein Lichtbogenkontaktstück verschlossen, so dass sich zunächst ein hoher Löschgasdruck in der Schaltstrecke aufbauen kann, der eine intensive Strömung nach Öffnen des Durchgangskanals zur Folge hat. Such a high-voltage circuit breaker is known, for example, from US 4,342,890. In the case of such a switch, the arcing contact pieces are separated from one another in the axial direction during the switching-off process, whereupon an arcing arises between them in the switching path in many switching cases. This arc heats up the existing extinguishing gas, usually SF 6 , and flows into a boiler room, where it is temporarily stored. From there, the extinguishing gas, which is under high pressure, then reaches the switching path when the current passes through zero and the arc is extinguished accordingly in order to cool it and to prevent the arc from reigniting. The insulating material nozzle is intended to align the flow of extinguishing gas, to accelerate the flow of extinguishing gas and to control it. In particular, the through-channel of the insulating material nozzle is closed by an arcing contact piece until the extinguishing position is reached, so that a high quenching gas pressure can initially build up in the switching path, which results in an intensive flow after opening the through-channel.
Es ist bekannt, dass insbesondere der Zwischenraum zwischen dem Lichtbogenkontaktstück, das den Durchgangskanal zeitweilig verdämmt und dem Material der Isolierstoffdüse dielektrische Probleme infolge der hohen vorliegenden Feldstärke entstehen können. Daher ist es bekannt, ein Endstück des Lichtbogenkontaktstückes mit gegenüber dem Schaft verringertem Durchmesser auszubilden, so dass in dem Zeitbereich, wenn das Lichtbogenkontaktstück den Durchgangskanal freigibt, ein Gasspalt zwischen dem Endstück des Lichtbogenkontaktstücks und der Wand des Durchgangskanals besteht, der dielektrische Probleme verhindern oder verringern soll.It is known that in particular the space between the arcing contact piece that temporarily the through-channel insulated and the material of the dielectric nozzle dielectric Problems due to the high field strength can arise. Therefore, it is known to be an end piece of the Arcing contact piece with reduced compared to the shaft Training diameter so that in the time domain if the arcing contact releases the through channel Gas gap between the end piece of the arcing contact piece and the wall of the through channel is dielectric Prevent or reduce problems.
Ein hiermit zusammenhängendes Problem besteht jedoch darin, dass in einem solchen Spalt vorzeitig Löschgas aus der Schaltstrecke entweichen kann, das zu einer nachfolgenden Kühlung der Schaltstrecke dann nicht mehr beiträgt.However, a related problem is that in such a gap, extinguishing gas from the Switching distance can escape, which leads to a subsequent Cooling the switching path then no longer contributes.
Weiterhin geht aus dem US-Patent US 5,483,210 ein Hochspannungsleistungsschalter hervor, welcher mit einer Isolierstoffdüse ausgestattet ist. Die Isolierstoffdüse umgibt die Schaltstrecke zwischen zwei relativ zueinander bewegbaren Lichtbogenkontaktstücken. Weiterhin weist die Isolierstoffdüse eine Düsenengstelle auf, welche während eines Schaltvorganges durch eines der Lichtbogenkontaktstücke, welches relativ zu der Isolierstoffdüse bewegbar ist, verdämmbar ist. Durch dieses Verdämmen wird durch den Lichtbogen ein unter erhöhtem Druck stehendes Gaspolster erzeugt. Mit dem Freigeben der Düsenengstelle kann dieses Gas durch die Düsenengstelle hindurch abströmen und den Lichtbogen kühlen. Zusätzlich wird diese Strömung von einer Kolbenzylinderanordnung unterstützt. Dabei ist ein Zylinder relativ zu einem Kolben bewegbar, wodurch Gas gegen den Lichtbogen geblasen wird. Furthermore, a high-voltage circuit breaker is derived from US Pat. No. 5,483,210 out, which with an insulating nozzle Is provided. The insulating material nozzle surrounds the Switching distance between two relatively movable Arcing contacts. Furthermore, the insulating material nozzle a nozzle constriction, which during a switching operation through one of the arcing contacts, which is relative is movable to the insulating material nozzle, can be damned. By damaging this, the arc becomes an under increased pressure standing gas cushion generated. With the release the nozzle constriction can this gas through the nozzle constriction flow out and cool the arc. additionally this flow is from a piston cylinder assembly supported. A cylinder is relative to one Movable piston, which blows gas against the arc becomes.
Die Relativbewegung der Kolbenzylinderanordnung wird durch den Antrieb der Schaltkontaktstücke getrieben. Aufgrund der zusätzlichen Belastung muss ein Antrieb mit einer erhöhten Antriebsleistung eingesetzt werden.The relative movement of the piston-cylinder arrangement is determined by driven the switch contact pieces. Due to the a drive with an increased Drive power can be used.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Isolierstoffdüse für einen Hochspannungsschalter zu schaffen, die eine verstärkte Beblasung des Lichtbogens mit komprimiertem Gas erlaubt.The present invention has for its object a Creating an insulating nozzle for a high voltage switch which is increased blowing of the arc with compressed Gas allowed.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Länge des zylindrischen Bereiches mindestens 2 mal so groß ist wie dessen Durchmesser.The object is achieved in that the Length of the cylindrical area at least twice as large is like its diameter.
Durch die erfindungsgemäße Ausgestaltung einer Isolierstoffdüse ist gewährleistet, dass über einen ausreichend langen Zeitraum die Verdämmung des zylindrischen Bereiches aufrechterhalten wird. Dadurch wird das Zeitintervall für das Aufheizen und Komprimieren des Gases durch den Lichtbogen vergrößert. Auch bei einer Verlängerung des zylindrischen Bereiches gegenüber den bekannten Lösungen wird der Lichtbogen noch in einem ausreichend langen Zeitraum mit Gas beblasen.The inventive design of an insulating material nozzle is guaranteed that over a sufficiently long Maintenance of the cylindrical area is maintained for a period of time becomes. This will make the time interval for heating up and compressing the gas by the arc increases. Even if the cylindrical area is extended compared to the known solutions, the arc is still in Blow with gas for a sufficiently long period of time.
Es ist hierdurch auch eine gute Abdichtung des Durchgangskanals durch das erste Lichtbogenkontaktstück erreicht, solange der Schaft den zylindrischen Bereich des Durchgangskanals blockiert. Zwischen dem Außendurchmesser des Schaftes und der Wand des Durchgangskanals muss aus Toleranzgründen und um eine leichte Bewegbarkeit des Lichtbogenkontaktstücks zu gewährleisten, zwar eine gewisse Spaltbreite vorgesehen sein, jedoch ist dieser Spalt so schmal, dass dort wenig Löschgas verloren geht, insbesondere dadurch, dass wenigstens zu Anfang eines Ausschaltvorganges der Durchgangskanal auf einer großen Länge blockiert ist, so dass das Löschgas über eine große Länge durch den Spalt strömen muss, um in einen Expansionsraum zu gelangen. Dies ist mittels einer bekannten Düse mit einer lokalen Engstelle praktisch nicht erreichbar.This also provides a good seal for the through-channel reached by the first arcing contact piece as long as the shaft the cylindrical region of the through-channel blocked. Between the outer diameter of the shaft and the Wall of the through-channel must for tolerance reasons and by one to ensure easy mobility of the arcing contact piece, a certain gap width may be provided, however, this gap is so narrow that there is little quenching gas is lost, especially because at least initially a switching off the through channel on a large length is blocked, so that the extinguishing gas over a large length must flow through the gap to enter an expansion space to get. This is by means of a known nozzle practically inaccessible with a local constriction.
Es kann auch vorteilhaft vorgesehen sein, dass die Länge größer ist als das Drei- oder Vierfache des Durchmessers des zylindrischen Bereichs. It can also be advantageously provided that the length is greater is as three or four times the diameter of the cylindrical Range.
Durch die Längenverhältnisse des Endstücks und des zylindrischen Bereichs ist sichergestellt, dass zu dem Zeitpunkt, wenn das freie Ende des Endstücks in den Durchgangskanal zurückgezogen wird und die dielektrische Belastung zwischen diesem freien Ende und der Wand des Durchgangskanals besonders groß ist, der Durchgangskanal durch den Schaft schon freigegeben ist. Hierdurch besteht zu diesem Zeitpunkt schon eine Löschgasströmung, die am freien Ende des Endstücks Überschläge verhindert.Due to the aspect ratio of the end piece and the cylindrical Area ensures that at the time if the free end of the end piece in the through channel is withdrawn and the dielectric load between this free end and the wall of the through channel the through-channel through the shaft is particularly large is already released. This means at this time already a quenching gas flow, that at the free end of the end piece Rollovers prevented.
Insbesondere bei einer großen Länge des zylindrischen Bereichs ergibt sich ein hoher Strömungswiderstand durch den schmalen, zwischen dem Schaft und der Wand des Durchgangskanals gebildeten Spalt und damit eine gute Abdichtung.Especially with a long length of the cylindrical area there is a high flow resistance through the narrow, between the shaft and the wall of the through-channel formed gap and thus a good seal.
Die Öffnung des Durchgangskanals geschieht erst nach einem großen Hub des Kontaktstiftes, so dass sich vor Ausbildung der Löschgasströmung über eine lange Zeit ein hoher Löschgasdruck im Heiz- bzw. Kompressionsraum ausbilden kann.The passage channel only opens after one large stroke of the contact pin, so that before training the extinguishing gas flow over a long time a high Can form quenching gas pressure in the heating or compression room.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass zwischen dem Endstück und dem Schaft des ersten Lichtbogenkontaktstücks ein konischer Übergangsbereich vorgesehen ist.A further advantageous embodiment of the invention provides before that between the end piece and the shaft of the first Arc contact piece provided a conical transition area is.
Weiterhin kann vorteilhaft vorgesehen sein, dass der Durchgangskanal an dem dem zweiten Lichtbogenkontaktstück abgewandten Ende des zylindrischen Bereichs eine konische Erweiterung aufweist.Furthermore, it can advantageously be provided that the through-channel on the part facing away from the second arcing contact A conical extension at the end of the cylindrical area having.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung gezeigt und nachfolgend beschrieben: The invention is described below using an exemplary embodiment shown in a drawing and described below:
Dabei zeigt die Figur schematisch einen Teil der Unterbrechereinheit eines erfindungsgemäßen Hochspannungsleistungsschalters.The figure schematically shows part of the interrupter unit of a high-voltage circuit breaker according to the invention.
In einem isolierenden Leistungsschaltergehäuse 18, das beispielsweise
aus Porzellan oder einem Verbundwerkstoff besteht,
stehen einander zwei Lichtbogenkontaktstücke 1,2
koaxial gegenüber. Das erste Lichtbogenkontaktstück 1 ist
feststehend ausgebildet bzw. getrennt antreibbar, während das
zweite Lichtbogenkontaktstück 2, das die Form eines Tulpenkontakts
aufweist, in Richtung des Pfeiles 14 zur Ausführung
einer Ausschaltbewegung und in umgekehrter Richtung zur Ausführung
einer Einschaltbewegung antreibbar ist.In an insulating
Mit dem zweiten Lichtbogenkontaktstück 2 ist ein Isolierstoffkörper
3 in Form einer Isolierstoffdüse fest verbunden,
die aus Polytetrafluoräthylen besteht. Die Isolierstoffdüse 3
weist einen Durchgangskanal 6 auf, der im Einschaltzustand
von dem ersten Lichtbogenkontaktstück 1 durchsetzt und verdämmt
ist. Radial außerhalb der Isolierstoffdüse 3 und diese
umgebend sind ein erstes Dauerstromkontaktstück 13 und ein
zweites Dauerstromkontaktstück 12 angeordnet, die im Einschaltzustand
ebenfalls miteinander in Kontakt stehen und den
Nennstrom tragen.With the second arcing
Außerdem ist ein Heizraum 16 gebildet, der über einen Kanal
15 mit dem Durchgangskanal 6 der Düse bzw. dem zwischen den
Lichtbogenkontaktstücken 1,2 gebildeten Lichtbogenraum verbunden
ist.In addition, a
Während der Ausschaltbewegung kann ein Lichtbogen 4 zwischen
den Lichtbogenkontaktstücken 1,2 entstehen, der das im Lichtbogenraum
5 befindliche Löschgas, beispielsweise SF6, aufheizt
und damit zur Expansion bringt. Das Löschgas kann dann
in den Heizraum 16 abströmen und wird dort vorübergehend gespeichert,
bis wegen eines Stromnulldurchgangs des zu schaltenden
Stromes der Lichtbogen 4 erlischt und das Löschgas aus
dem Heizraum 16 durch den Kanal 15 in den Lichtbogenraum 5
zurückströmt, um dort eine rasche Kühlung herbeizuführen und
somit die Rückzündung eines Lichtbogens 4 zu verhindern.During the switch-off movement, an
In der ersten Phase der Ausschaltbewegung, wenn das erste
Lichtbogenkontaktstück 1 noch mit dem zweiten Lichtbogenkontaktstück
2 in elektrisch leitender Verbindung steht, ist der
Durchgangskanal 6 noch durch das erste Lichtbogenkontaktstück
1 verdämmt. Der Durchmesser des Durchgangskanals 6 entspricht
in dem zylindrischen Bereich dem Außendurchmesser des Schaftes
8 des ersten Lichtbogenkontaktstücks 1.In the first phase of the opening movement when the first
Arc contact piece 1 still with the second arcing
Der Durchgangskanal 6 ist in einem wesentlichen Bereich
17seiner Länge zylindrisch gestaltet, so dass einerseits die
Verdämmung durch das erste Lichtbogenkontaktstück 1 beim
Ausschalten solange andauert, bis ein genügender Löschgasdruck
im Lichtbogenraum 5 bzw. im Heizraum 16 erreicht ist
und dass andererseits eine große axiale Überlappung des
Schafts 8 mit dem Durchgangskanal 6 zu einer effektiven Dichtung
führt.The through channel 6 is in an
Die zweite Phase der Ausschaltbewegung beginnt mit der Trennung
des ersten Lichtbogenkontaktstückes 1 von dem zweiten
Lichtbogenkontaktstück 2. Jetzt entsteht zwischen den Lichtbogenkontaktstücken
1 und 2 ein Lichtbogen, der das Gas im
Lichtbogenraum 5 aufheizt und expandieren lässt. Zu diesem
Zeitpunkt oder etwas später verlässt der Schaft 8 den zylindrischen
Bereich 17 des Durchgangskanals 6. Dieser wird jetzt
nur noch durch das Endstück 7 verdämmt, so dass ein Teil des
expandierten Löschgases den Spalt zwischen dem Endstück 7 und
dem zylindrischen Bereich 17 des Durchgangskanals 6
durchströmen kann und so die dielektrischen Probleme in dem
Spalt verringert. The second phase of the switch-off movement begins with the separation
of the first arcing contact 1 from the second
Das durchströmende Löschgas bewirkt unter anderem die dielektrische
Verfestigung des Zwischenraumes zwischen dem Endstück
7 und dem Isolierstoffkörper 3.The extinguishing gas flowing through causes, among other things, the dielectric
Solidification of the space between the end piece
7 and the
Claims (3)
- Insulating nozzle for a high-voltage circuit breaker, which, at least during a disconnection procedure, surrounds a switching path which is formed between two arcing contact pieces, the insulating nozzle having a through-channel having a cylindrical region which is blocked during the disconnection procedure by an arcing contact piece, which can move relative to the insulating nozzle, characterized in that the length of the cylindrical region is at least twice as great as its diameter.
- Insulating nozzle according to Claim 1, characterized in that the length of the cylindrical region is at least three times as great as its diameter.
- Insulating nozzle according to Claim 1 or 2, characterized in that the length of the cylindrical region is at least four times as great as its diameter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19809088A DE19809088C1 (en) | 1998-02-25 | 1998-02-25 | High-voltage circuit breaker with an insulating nozzle |
| DE19809088 | 1998-02-25 | ||
| EP99915472A EP1064664A1 (en) | 1998-02-25 | 1999-02-05 | High voltage power circuit breaker with an insulation nozzle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99915472A Division EP1064664A1 (en) | 1998-02-25 | 1999-02-05 | High voltage power circuit breaker with an insulation nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1306868A1 EP1306868A1 (en) | 2003-05-02 |
| EP1306868B1 true EP1306868B1 (en) | 2004-11-10 |
Family
ID=7859590
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99915472A Withdrawn EP1064664A1 (en) | 1998-02-25 | 1999-02-05 | High voltage power circuit breaker with an insulation nozzle |
| EP02090369A Revoked EP1306868B1 (en) | 1998-02-25 | 1999-02-05 | High voltage power circuit breaker with insulating nozzle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99915472A Withdrawn EP1064664A1 (en) | 1998-02-25 | 1999-02-05 | High voltage power circuit breaker with an insulation nozzle |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6744000B1 (en) |
| EP (2) | EP1064664A1 (en) |
| JP (1) | JP2002505501A (en) |
| CA (1) | CA2321714A1 (en) |
| DE (2) | DE19809088C1 (en) |
| WO (1) | WO1999044213A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948687C1 (en) * | 1999-09-30 | 2001-02-15 | Siemens Ag | High-voltage power switch comprises a gas flow-off channel whose proportions are specified together with the maximum diameter over a part of its length |
| FR2869449B1 (en) * | 2004-04-21 | 2008-02-29 | Areva T & D Sa | ELECTRIC CUTTING EQUIPMENT IN MEDIUM OR HIGH VOLTAGE. |
| EP2099047B1 (en) | 2008-03-03 | 2012-10-03 | ABB Research Ltd | Combustion contact device and output switch |
| WO2009124582A1 (en) * | 2008-04-07 | 2009-10-15 | Abb Research Ltd | Gas-insulated high voltage switch |
| AT507257B1 (en) | 2008-09-10 | 2011-08-15 | Engel Austria Gmbh | HANDLING PART FOR INJECTION MOLDING MACHINE WITH ACTIVE CUSHIONING |
| JP5242461B2 (en) * | 2009-03-06 | 2013-07-24 | 株式会社東芝 | Gas circuit breaker |
| FR2944136B1 (en) * | 2009-04-03 | 2011-06-10 | Areva T & D Sa | ARC-BLOW MOBILE CONTACT CURRENT CHAMBER MADE INTEGRALLY THROUGH THE SAME, BY HVDC BY-PASS SWITCH AND UNDER HVDC CONVERSION STATION COMPRISING SUCH A ROOM. |
| JP5422472B2 (en) * | 2010-04-08 | 2014-02-19 | 株式会社東芝 | Gas circuit breaker |
| RU2483407C1 (en) * | 2011-10-11 | 2013-05-27 | Открытое Акционерное Общество Холдинговая Компания "Электрозавод" (Оао "Электрозавод") | Grounding conductor for sf6 insulated switchgear |
| KR200482939Y1 (en) * | 2012-03-14 | 2017-03-17 | 엘에스산전 주식회사 | Hybrid-extinction type gas circuit breaker |
| FR3053524B1 (en) * | 2016-06-29 | 2018-08-10 | General Electric Technology Gmbh | ELECTRIC ARC BLOWING NOZZLE AND CIRCUIT BREAKER COMPRISING SUCH A NOZZLE |
| EP3488458B1 (en) * | 2016-07-21 | 2020-09-02 | ABB Power Grids Switzerland AG | Gas-insulated high-voltage switching device with improved main nozzle |
| DE102018211621A1 (en) * | 2018-07-12 | 2020-01-16 | Siemens Aktiengesellschaft | Gas-insulated switch |
| CA3109875A1 (en) * | 2018-09-07 | 2020-03-12 | General Electric Technology Gmbh | An electric arc-blast nozzle made of a material comprising micro-capsules of liquid (cf3)2cfcn and a circuit breaker including such a nozzle |
| US10734175B1 (en) * | 2019-09-24 | 2020-08-04 | Southern States Llc | High voltage electric power switch with anti-flashover nozzle |
| CN113690093B (en) * | 2021-08-25 | 2023-01-24 | 西安西电开关电气有限公司 | Circuit breaker |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH648153A5 (en) * | 1979-04-24 | 1985-02-28 | Sprecher & Schuh Ag | EXHAUST GAS SWITCH. |
| CH644969A5 (en) * | 1979-09-25 | 1984-08-31 | Sprecher & Schuh Ag | Gas pressure switch. |
| JPH01183024A (en) * | 1988-01-11 | 1989-07-20 | Mitsubishi Electric Corp | Gas-blasted circuit breaker |
| JPH01243328A (en) * | 1988-03-25 | 1989-09-28 | Hitachi Ltd | Buffer-type gas-blasted circuit breaker |
| US5483210A (en) | 1994-04-08 | 1996-01-09 | Abb Power T&D Company Inc. | Mechanical guidance system for switcher interrupter and method for assembling the same |
| DE19645524A1 (en) * | 1996-11-05 | 1998-05-07 | Abb Research Ltd | Circuit breaker |
| FR2762925B1 (en) | 1997-05-02 | 1999-07-09 | Gec Alsthom T & D Sa | HIGH VOLTAGE CIRCUIT BREAKER WITH DOUBLE MOTION OF ARC CONTACTS |
-
1998
- 1998-02-25 DE DE19809088A patent/DE19809088C1/en not_active Expired - Fee Related
-
1999
- 1999-02-05 CA CA002321714A patent/CA2321714A1/en not_active Abandoned
- 1999-02-05 WO PCT/DE1999/000378 patent/WO1999044213A1/en not_active Application Discontinuation
- 1999-02-05 JP JP2000533883A patent/JP2002505501A/en not_active Withdrawn
- 1999-02-05 DE DE59911061T patent/DE59911061D1/en not_active Revoked
- 1999-02-05 EP EP99915472A patent/EP1064664A1/en not_active Withdrawn
- 1999-02-05 US US09/622,886 patent/US6744000B1/en not_active Expired - Fee Related
- 1999-02-05 EP EP02090369A patent/EP1306868B1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| US6744000B1 (en) | 2004-06-01 |
| DE59911061D1 (en) | 2004-12-16 |
| CA2321714A1 (en) | 1999-09-02 |
| DE19809088C1 (en) | 1999-09-30 |
| WO1999044213A1 (en) | 1999-09-02 |
| EP1064664A1 (en) | 2001-01-03 |
| EP1306868A1 (en) | 2003-05-02 |
| JP2002505501A (en) | 2002-02-19 |
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