EP0089524A1 - High-voltage switch - Google Patents

High-voltage switch Download PDF

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Publication number
EP0089524A1
EP0089524A1 EP83102085A EP83102085A EP0089524A1 EP 0089524 A1 EP0089524 A1 EP 0089524A1 EP 83102085 A EP83102085 A EP 83102085A EP 83102085 A EP83102085 A EP 83102085A EP 0089524 A1 EP0089524 A1 EP 0089524A1
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EP
European Patent Office
Prior art keywords
nozzle
nozzles
face
voltage switch
axis
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Granted
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EP83102085A
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German (de)
French (fr)
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EP0089524B1 (en
Inventor
Wilhelm Dr. Tiemann
Jobst Verleger
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Siemens AG
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Siemens AG
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Priority to AT83102085T priority Critical patent/ATE15296T1/en
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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
    • H01H33/7069—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by special dielectric or insulating properties or by special electric or magnetic field control properties

Definitions

  • the invention relates to a high-voltage switch, in particular a blow piston switch, with a radial pressure gas supply to an electrode system with a double nozzle, the end faces of which are shaped in such a way that a high dielectric strength results at a short distance.
  • pressure gas switches are known to be used, which are generally designed as blow piston switches or can also operate according to the two-pressure system.
  • a fluorine-containing electro-negative gas in particular sulfur hexafluoride SF6, is used as the compressed gas and also serves as an insulating gas.
  • the opposing electrodes are hollow to remove the switching gases and provided with nozzle-shaped end faces. At least a part of the electrodes adjoining the end faces consists of carbon, in particular of graphite.
  • the inner nozzle diameter and the distance between the nozzles are chosen so that a good quenching effect is obtained on an arc which is drawn when the switch is opened.
  • the arc is drawn through a movable bypass switching element, which is generally arranged on the outer jacket of the double nozzles. Furthermore, the arc can be drawn through a switching piece within the nozzles or through it that movable nozzles are provided, which are separated from one another by axial movement to interrupt the current. Due to the essentially radially inward gas flow, the arc base points are blown into the nozzle orifices. In high-voltage switches, for example for a nominal voltage of 245 kV and more, several such interrupter units of high breaking capacity can be connected in series.
  • the invention is based on the object of specifying a high-voltage switch in which the switching path of the interrupter unit has a high dielectric strength, preferably against surge voltages, in particular in the event of a lightning strike into the system. Furthermore, in the case of compressed gas switches, the radial blowing in the space between the nozzles is to be improved during an arc extinguishing. The cooling effect of the quenching gas during arc quenching can be increased by reducing the nozzle spacing. The distance between the nozzles is largely determined by the required withstand voltage when the switch is open. The invention is based on the knowledge that an uneven field distribution on the end faces of the nozzles must be avoided.
  • the switching path must be cleaned of charge carriers and kept free after an extinguishing process.
  • the arc has therefore been blown radially with the help of special coaxial movable contacts within the double nozzles and then in the space between the nozzles.
  • the individual nozzles of the interrupter unit are electrically so favorably shaped on the opposite end faces that there is a minimum of distance to produce the required dielectric strength when cold.
  • the shape of the through openings of the switching contacts is intended to prevent the arc from passing over to the nozzles.
  • the end faces of the double nozzles are shaped so that they form a rotating body, the generating body of which is a circular arc (DE-AS 10 55 643).
  • the end faces of the double nozzles have been given a shape for guiding the gas flow directed radially to the axis of rotation of the system, the part of which adjoining the outer jacket of the electrodes has a greater curvature than that at the constriction of the nozzle mouth subsequent part of the end face (DE-AS 22 20 897).
  • the generatrix of the end face forms part of an ellipse which is inclined in such a way that its major axis includes an acute angle of inclination with the axis of rotation of the electrode system, which angle is open towards the direction of the nozzle mouth.
  • the nozzle constriction is close to the nozzle axis and the blowing effect on an arc is increased in that the maximum velocity of the radial gas flow is shifted closer to the stagnation point of the flow.
  • the figure shows the cross section of a rotationally symmetrical electrode system 2 with coaxially arranged hollow cylindrical nozzles 3 and 4 with an outer diameter D A of, for example, 60 to 100 mm and an inner diameter D i of the nozzle mouth, for example, about 25 to 50 mm, the axis of rotation of which is denoted by 6 and which form a double nozzle of an interrupter unit, two of which, for example, can be connected in series in a switch for a nominal voltage of 245 kV.
  • the end faces face each other at a fixed distance A of, for example, about 20 to 50 mm.
  • the nozzles 3 and 4 can, for example, consist of carbon, in particular graphite, and can be inserted into hollow cylindrical metallic holders, of which only one is indicated in the figure and is designated by 5.
  • the contours of the end faces of the opposing nozzles 3 and 4 each form part of an ellipse E, the center of which is denoted by M.
  • the electrode system 2 can an uneven field distribution and a field concentration on the end faces of the nozzles 3 and 4 do not occur and the dielectric strength of the interrupter unit is accordingly increased accordingly.
  • the end faces of the nozzles 3 and 4 are designed such that the ellipse E is inclined towards the axis of rotation 6.
  • Its major axis a includes an acute angle ⁇ o with respect to the axis of rotation 6, which is open towards the direction of the nozzle mouth and can be, for example, approximately 45 to 75 °, in particular approximately 55 to 65 °.
  • the center M of the ellipse E is determined by its distance R m from the axis of rotation 6 and its distance ZM from the central plane of the electrode system 2, which is not designated in any more detail and is indicated by dash-dotted lines in the figure.
  • the position and size of the ellipse E is determined by its large main axis a and its small main axis b and the coordinates of the center M and the inclination of their main axes with respect to the axis of rotation 6, which are determined by the angle ⁇ O.
  • the profile of the cross section of the nozzles 3 and 4 is thus designed in the direction of the radial gas flow indicated by an arrow 8 in the manner of a Laval nozzle, which causes a high flow velocity of the compressed gas at its narrowest point determining the distance A.
  • a circuit breaker with electrodes was chosen, which form a double nozzle.
  • the design of the nozzle mouth can also be used in high-voltage switches with only one nozzle, for example in disconnectors.

Landscapes

  • Circuit Breakers (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electronic Switches (AREA)
  • Details Of Television Scanning (AREA)

Abstract

Bei einem Elektrodensystem (2) mit wenigstens einer Düse ist erfindungsgemäß die Stirnfläche der Düse (3, 4) so geformt, daß die Kontur der Stirnfläche des Querschnitts in Achsrichtung der Düse (3, 4) einen Teil einer Ellipse (E) bildet, die vorzugsweise gegenüber der Rotationsachse (6) geneigt sein kann. Diese Gestaltungsform kann angewendet werden bei Leistungsschaltern mit Doppeldüsen und bei Trennschaltern mit einer Düse. Eine Feldkonzentration an der Stirnfläche wird vermieden und somit die dielektrische Festigkeit entsprechend erhöht.In an electrode system (2) with at least one nozzle, the end face of the nozzle (3, 4) is shaped according to the invention in such a way that the contour of the end face of the cross section in the axial direction of the nozzle (3, 4) forms part of an ellipse (E) which can preferably be inclined with respect to the axis of rotation (6). This design can be used for circuit breakers with double nozzles and for circuit breakers with one nozzle. A field concentration on the end face is avoided and the dielectric strength is accordingly increased.

Description

Die Erfindung ezieht sich auf einen Hochspannungsschalter, insbesondere Blaskolbenschalter, mit radialer Druckgaszufuhr zu einem Elektrodensystem mit einer Doppeldüse, deren Stirnflächen so geformt sind, daß sich bei geringem Abstand eine hohe Spannungsfestigkeit ergibt.The invention relates to a high-voltage switch, in particular a blow piston switch, with a radial pressure gas supply to an electrode system with a double nozzle, the end faces of which are shaped in such a way that a high dielectric strength results at a short distance.

In Hochspannungsanlagen mit einer Nennspannung von beispielsweise mehr als 100 kV werden bekanntlich Druckgasschalter verwendet, die im allgemeinen als Blaskolbenschalter gestaltet sind oder auch nach dem Zweidrucksystem arbeiten können. Als Druckgas dient ein fluorhaltiges elekronegatives Gas, insbesondere Schwefelhexafluorid SF6, das zugleich als Isoliergas dient. Die einander gegenüberstehenden Elektroden sind zur Abfuhr der Schaltgase hohl ausgebildet und mit düsenförmig gestalteten Stirnseiten versehen. Wenigstens ein an die Stirnflächen angrenzender Teil der Elektroden besteht aus Kohlenstoff, insbesondere aus Graphit. Der innere Düsendurchmesser und der Abstand der Düsen werden so gewählt, daß man eine gute Löschwirkung auf einen Lichtbogen erhält, der beim Öffnen des Schalters gezogen wird.In high-voltage systems with a nominal voltage of, for example, more than 100 kV, pressure gas switches are known to be used, which are generally designed as blow piston switches or can also operate according to the two-pressure system. A fluorine-containing electro-negative gas, in particular sulfur hexafluoride SF6, is used as the compressed gas and also serves as an insulating gas. The opposing electrodes are hollow to remove the switching gases and provided with nozzle-shaped end faces. At least a part of the electrodes adjoining the end faces consists of carbon, in particular of graphite. The inner nozzle diameter and the distance between the nozzles are chosen so that a good quenching effect is obtained on an arc which is drawn when the switch is opened.

In Schaltern mit Doppeldüsen, die in einem festen Abstand einander gegenüberstehen, wird der Lichtbogen durch ein bewegliches Überbrückungsschaltstück gezogen, das im allgemeinen am Außenmantel der Doppeldüsen angeordnet ist. Ferner kann der Lichtbogen durch ein Schaltstück innerhalb der Düsen oder auch dadurch gezogen werden, daß bewegliche Düsen vorgesehen sind, die zur Stromunterbrechung durch axiale Bewegung voneinander getrennt werden. Durch die im wesentlichen radial nach innen gerichtete Gasströmung werden die Lichtbogenfußpunkte in die Düsenmündungen hineingeblasen. In Hochspannungsschaltern, beispielsweise für eine Nennspannung von 245 kV und mehr, können mehrere solcher Unterbrechereinheiten hoher Abschaltleistung in Reihe geschaltet sein.In switches with double nozzles that face each other at a fixed distance, the arc is drawn through a movable bypass switching element, which is generally arranged on the outer jacket of the double nozzles. Furthermore, the arc can be drawn through a switching piece within the nozzles or through it that movable nozzles are provided, which are separated from one another by axial movement to interrupt the current. Due to the essentially radially inward gas flow, the arc base points are blown into the nozzle orifices. In high-voltage switches, for example for a nominal voltage of 245 kV and more, several such interrupter units of high breaking capacity can be connected in series.

Der Erfindung liegt die Aufgabe zugrunde, einen Hochspannungsschalter anzugeben, bei dem die Schaltstrecke der Unterbrechereinheit eine hohe dielektrische Festigkeit hat, vorzugsweise gegen Stoßspannungen, insbesondere im Fall eines Blitzschlags in die Anlage. Ferner soll bei Druckgasschaltern die radiale Beblasung im Düsenzwischenraum während einer Lichtbogenlöschung verbessert werden. Die Kühlwirkung des Löschgases bei der Lichtbogenlöschung kann zwar dadurch erhöht werden, daß der Düsenabstand vermindert wird. Der Düsenabstand wird aber wesentlich mitbestimmt durch die geforderte Stehspannung bei geöffnetem Schalter. Die Erfindung beruht auf der Erkenntnis, daß eine ungleichmäßige Feldverteilung an den Stirnflächen der Düsen vermieden werden muß.The invention is based on the object of specifying a high-voltage switch in which the switching path of the interrupter unit has a high dielectric strength, preferably against surge voltages, in particular in the event of a lightning strike into the system. Furthermore, in the case of compressed gas switches, the radial blowing in the space between the nozzles is to be improved during an arc extinguishing. The cooling effect of the quenching gas during arc quenching can be increased by reducing the nozzle spacing. The distance between the nozzles is largely determined by the required withstand voltage when the switch is open. The invention is based on the knowledge that an uneven field distribution on the end faces of the nozzles must be avoided.

Es ist bekannt, daß nach einem Löschvorgang die Schaltstrecke von Ladungsträgern gesäubert und freigehalten werden muß. Man hat deshalb den Lichtbogen mit Hilfe besonderer koaxialer beweglicher Kontakte innerhalb der Doppeldüsen und dann im Düsenzwischenraum radial beblasen. Die Einzeldüsen der Unterbrechereinheit sind an den sich gegenüberstehenden Stirnflächen elektrisch so günstig geformt, daß sich ein Minimum an Abstand zur Herstellung der geforderten Spannungsfestigkeit im kalten Zustand ergibt. Durch die Formgebung der Durchtrittsöffnungen der Schaltkontakte soll der Lichtbogen an einem Übertritt zu den Düsen gehindert werden. Zur Lösung dieser Aufgabe sind die Stirnflächen der Doppeldüsen so geformt, daß sie einen Rotationskörper bilden, dessen erzeugende ein Kreisbogen ist (DE-AS 10 55 643).It is known that the switching path must be cleaned of charge carriers and kept free after an extinguishing process. The arc has therefore been blown radially with the help of special coaxial movable contacts within the double nozzles and then in the space between the nozzles. The individual nozzles of the interrupter unit are electrically so favorably shaped on the opposite end faces that there is a minimum of distance to produce the required dielectric strength when cold. The shape of the through openings of the switching contacts is intended to prevent the arc from passing over to the nozzles. To solve this problem, the end faces of the double nozzles are shaped so that they form a rotating body, the generating body of which is a circular arc (DE-AS 10 55 643).

In einem Doppeldüsensystem mit in festem Abstand einander gegenüberstehenden Düsen hat man zur Strömungsführung der radial zur Rotationsachse des Systems gerichteten Gasströmung den Stirnflächen der Doppeldüsen eine Form gegeben, deren an den Außenmantel der Elektroden angrenzender Teil eine stärkere Krümmung hat als der an die Engstelle der Düsenmündung sich anschließende Teil der Stirnfläche (DE-AS 22 20 897).In a double nozzle system with nozzles facing each other at a fixed distance, the end faces of the double nozzles have been given a shape for guiding the gas flow directed radially to the axis of rotation of the system, the part of which adjoining the outer jacket of the electrodes has a greater curvature than that at the constriction of the nozzle mouth subsequent part of the end face (DE-AS 22 20 897).

Die erwähnte Aufgabe wird nun erfindungsgemäß gelöst mit dem kennzeichnenden Merkmal des Anspruchs 1. Damit erhält man eine gleichmäßige Feldverteilung über der Stirnfläche und einen an die Stirnfläche angrenzenden Teil der Doppeldüsen. Die dielektrische Festigkeit der Unterbrechereinheit wird entsprechend erhöht und der Düsenabstand kann ohne Beeinträchtigung der Kaltfestigkeit erheblich vermindert werden. Ferner wird der Grenzstrom, bis zu dem eine etwa zylindrische Lichtbogenform gewahrt bleibt, wesentlich erhöht.The above-mentioned object is now achieved according to the invention with the characterizing feature of claim 1. This results in a uniform field distribution over the end face and a part of the double nozzles adjoining the end face. The dielectric strength of the interrupter unit is increased accordingly and the nozzle spacing can be reduced considerably without impairing the cold strength. Furthermore, the limit current up to which an approximately cylindrical arc shape is maintained is significantly increased.

In einer bevorzugten Ausführungsform des Druckgasschalters bildet die Erzeugende der Stirnfläche einen Teil einer derart geneigten Ellipse, daß deren große Hauptachse mit der Rotationsachse des Elektrodensystems einen spitzen Neigungswinkel einschließt, der gegen die Richtung der Düsenmündung geöffnet ist. Damit erhält man ein Profil des Querschnitts der Doppeldüsen, das sich in der radialen Strömungsrichtung des Druckgases nach Art einer Laval-Düse zunächst mit geringerer Krümmung verengt und in der Strömungsrichtung nach der Engstelle mit größerer Krümmung erweitert. In dieser Ausführungsform liegt die Düsenengstelle nahe der Düsenachse und die Blaswirkung auf einen Lichtbogen wird dadurch erhöht, daß das Geschwindigkeitsmaximum der radialen Gasströmung näher an den Staupunkt der Strömung verlagert wird.In a preferred embodiment of the gas pressure switch, the generatrix of the end face forms part of an ellipse which is inclined in such a way that its major axis includes an acute angle of inclination with the axis of rotation of the electrode system, which angle is open towards the direction of the nozzle mouth. This gives you a profile of the cross section of the double nozzles, the narrows in the radial flow direction of the compressed gas in the manner of a Laval nozzle initially with less curvature and widens in the flow direction after the constriction with greater curvature. In this embodiment, the nozzle constriction is close to the nozzle axis and the blowing effect on an arc is increased in that the maximum velocity of the radial gas flow is shifted closer to the stagnation point of the flow.

Zur weiteren Erläuterung der Erfindung wird auf die Zeichnung Bezug genommen, in der ein Ausführungsbeispiel einer bevorzugten Ausführungsform eines Hochspannungsschalters mit Elektroden nach der Erfindung schematisch veranschaulicht ist.To further explain the invention, reference is made to the drawing, in which an exemplary embodiment of a preferred embodiment of a high-voltage switch with electrodes according to the invention is schematically illustrated.

Die Figur zeigt den Querschnitt eines rotationssymmetrischen Elektrodensystems 2 mit koaxial zueinander angeordneten hohlzylindrischen Düsen 3 und 4 mit einem Außendurchmesser DA von beispielsweise 60 bis 100 mm und einem Innendurchmesser Di der Düsenmündung beispielsweise etwa 25 bis 50 mm, deren Rotationsachse mit 6 bezeichnet ist und die eine Doppeldüse einer Unterbrechereinheit bilden, von denen in einem Schalter für eine Nennspannung von 245 kV beispielsweise zwei in Reihe geschaltet sein können. Die Stirnflächen stehen in einem festen Abstand A von beispielsweise etwa 20 bis 50 mm einander gegenüber. Die Düsen 3 und 4 können beispielsweise aus Kohlenstoff, insbesondere aus Graphit, bestehen und in hohlzylindrische metallische Halterungen eingesetzt sein, von denen in der Figur lediglich eine angedeutet und mit 5 bezeichnet ist. Die Konturen der Stirnflächen der einander gegenüberstehenden Düsen 3 und 4 bilden jeweils einen Teil einer Ellipse E, deren Mittelpunkt mit M bezeichnet ist. In dieser Ausführungsform des Elektrodensystems 2 kann eine ungleichmäßige Feldverteilung und eine Feldkonzentration an den Stirnflächen der Düsen 3 und 4 nicht auftreten und die dielektrische Festigkeit der Unterbrechereinheit wird somit entsprechend erhöht.The figure shows the cross section of a rotationally symmetrical electrode system 2 with coaxially arranged hollow cylindrical nozzles 3 and 4 with an outer diameter D A of, for example, 60 to 100 mm and an inner diameter D i of the nozzle mouth, for example, about 25 to 50 mm, the axis of rotation of which is denoted by 6 and which form a double nozzle of an interrupter unit, two of which, for example, can be connected in series in a switch for a nominal voltage of 245 kV. The end faces face each other at a fixed distance A of, for example, about 20 to 50 mm. The nozzles 3 and 4 can, for example, consist of carbon, in particular graphite, and can be inserted into hollow cylindrical metallic holders, of which only one is indicated in the figure and is designated by 5. The contours of the end faces of the opposing nozzles 3 and 4 each form part of an ellipse E, the center of which is denoted by M. In this embodiment, the electrode system 2 can an uneven field distribution and a field concentration on the end faces of the nozzles 3 and 4 do not occur and the dielectric strength of the interrupter unit is accordingly increased accordingly.

In einer bevorzugten Ausführungsform des Druckgasschalters werden die Stirnflächen der Düsen 3 und 4 so gestaltet, daß die Ellipse E gegen die Rotationsachse 6 geneigt ist. Ihre große Hauptachse a schließt gegenüber der Rotationsachse 6 einen spitzen Winkel αo ein, der gegen die Richtung der Düsenmündung geöffnet ist und beispielsweise etwa 45 bis 75°, insbesondere etwa 55 bis 65°, betragen kann. Der Mittelpunkt M der Ellipse E wird bestimmt durch seinen Abstand Rm von der Rotationsachse 6 und seinen Abstand ZM von der nicht näher bezeichneten und in der Figur strichpunktiert angedeuteten Mittelebene des Elektrodensystems 2. Die Lage und Größe der Ellipse E wird bestimmt durch ihre große Hauptachse a und ihre kleine Hauptachse b sowie die Koordinaten des Mittelpunktes M und die Neigung ihrer Hauptachsen gegenüber der Rotationsachse 6, die durch den Winkel αO festgelegt sind. Das Profil des Querschnitts der Düsen 3 und 4 ist damit in Richtung der durch einen Pfeil 8 angedeuteten radialen Gasströmung nach Art einer Laval-Düse gestaltet, die an ihrer den Abstand A bestimmenden engsten Stelle eine hohe Strömungsgeschwindigkeit des Druckgases bewirkt. Durch die in der Strömungsrichtung zunächst geringe Krümmung der Stirnfläche wird die etwa durch die Pfeile für den Abstand A angedeutete Engstelle und damit das Geschwindigkeitsmaximum der Gasströmung zum Staupunkt P an der Rotationsachse 6 verlagert. Damit erhält man eine entsprechend gute Beblasung eines nach dem Öffnen des Schalters an den Düsen 3 und 4 gezogenen und in der Figur nicht dargestellten Lichtbogens.In a preferred embodiment of the gas pressure switch, the end faces of the nozzles 3 and 4 are designed such that the ellipse E is inclined towards the axis of rotation 6. Its major axis a includes an acute angle α o with respect to the axis of rotation 6, which is open towards the direction of the nozzle mouth and can be, for example, approximately 45 to 75 °, in particular approximately 55 to 65 °. The center M of the ellipse E is determined by its distance R m from the axis of rotation 6 and its distance ZM from the central plane of the electrode system 2, which is not designated in any more detail and is indicated by dash-dotted lines in the figure. The position and size of the ellipse E is determined by its large main axis a and its small main axis b and the coordinates of the center M and the inclination of their main axes with respect to the axis of rotation 6, which are determined by the angle α O. The profile of the cross section of the nozzles 3 and 4 is thus designed in the direction of the radial gas flow indicated by an arrow 8 in the manner of a Laval nozzle, which causes a high flow velocity of the compressed gas at its narrowest point determining the distance A. As a result of the curvature of the end face, which is initially slight in the direction of flow, the narrow point indicated by the arrows for the distance A and thus the maximum velocity of the gas flow is shifted to the stagnation point P on the axis of rotation 6. This gives a correspondingly good blowing of an arc drawn after opening the switch at the nozzles 3 and 4 and not shown in the figure.

Im Ausführungsbeispiel wurde ein Leistungsschalter mit Elektroden gewählt, die eine Doppeldüse bilden. Die Gestaltung der Düsenmündung kann jedoch auch angewendet werden bei Hochspannungsschalter mit nur einer Düse, beispielsweise bei Trennschaltern.In the exemplary embodiment, a circuit breaker with electrodes was chosen, which form a double nozzle. However, the design of the nozzle mouth can also be used in high-voltage switches with only one nozzle, for example in disconnectors.

Claims (4)

1. Hochspannungsschalter, insbesondere Blaskolbenschalter, mit radiale Druckgaszufuhr zu einem Elektrodensystem mit einer Doppeldüse, deren Stirnflächen so geformt sind, daß sich bei geringem Abstand eine hohe Spannungsfestigkeit ergibt, dadurch gekennzeichnet , daß die Konturen der Stirnflächen des Querschnitts in Achsrichtung der Düsen (3, 4) jeweils einen Teil einer Ellipse bilden.1. High-voltage switch, in particular blow piston switch, with radial compressed gas supply to an electrode system with a double nozzle, the end faces of which are shaped in such a way that a high dielectric strength results at a short distance, characterized in that the contours of the end faces of the cross section in the axial direction of the nozzles (3, 4) each form part of an ellipse. 2. Hochspannungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß die Erzeugende der Stirnfläche einen Teil einer derart geneigten Ellipse (E) bildet, daß deren große Hauptachse (a) mit der Rotationsache (6) einen spitzen Neigungswinkel (αO) einschließt, der gegen die Richtung der Düsenmündung geöffnet ist.2. High-voltage switch according to claim 1, characterized in that the generatrix of the end face forms part of such an inclined ellipse (E) that its major axis (a) with the rotation axis (6) includes an acute angle of inclination (α O ) against the direction of the nozzle mouth is open. 3. Hochspannungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß das Profil des Querschnitts der Düsen (3, 4) in radialer Richtung zur Rotationsachse (6) nach Art einer Laval-Düse gestaltet ist.3. High-voltage switch according to claim 1 or 2, characterized in that the profile of the cross section of the nozzles (3, 4) in the radial direction to the axis of rotation (6) is designed in the manner of a Laval nozzle. 4. Hochspannungsschalter mit Elektroden, von denen eine als Düse gestaltet ist, deren Stirnfläche so geformt ist, daß sich bei geringem Abstand eine hohe Spannungsfestigkeit ergibt, dadurch gekennzeichnet , daß.im Querschnitt in Achsrichtung der Elektroden die Kontur der Stirnfläche der Düse einen Teil einer Ellipse bildet.4. High-voltage switch with electrodes, one of which is designed as a nozzle, the end face of which is shaped in such a way that a high dielectric strength results at a short distance, characterized in that the contour of the end face of the nozzle is part of a cross-section in the axial direction of the electrodes Ellipse forms.
EP83102085A 1982-03-18 1983-03-03 High-voltage switch Expired EP0089524B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102085T ATE15296T1 (en) 1982-03-18 1983-03-03 HIGH VOLTAGE SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3209968 1982-03-18
DE19823209968 DE3209968A1 (en) 1982-03-18 1982-03-18 EXHAUST GAS SWITCH

Publications (2)

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EP0089524A1 true EP0089524A1 (en) 1983-09-28
EP0089524B1 EP0089524B1 (en) 1985-08-28

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EP83102085A Expired EP0089524B1 (en) 1982-03-18 1983-03-03 High-voltage switch

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US (1) US4490594A (en)
EP (1) EP0089524B1 (en)
JP (1) JPH0618097B2 (en)
AT (1) ATE15296T1 (en)
DE (2) DE3209968A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000044010A2 (en) * 1999-01-20 2000-07-27 Siemens Aktiengesellschaft High-voltage power circuit breaker comprising an insulating nozzle
US8591836B2 (en) 2003-06-23 2013-11-26 Applied Biosystems, Llc Caps for sample wells and microcards for biological materials

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JP2773375B2 (en) * 1990-04-04 1998-07-09 松下電器産業株式会社 Transmitting device, receiving device, and transmitting / receiving device

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DE681468C (en) * 1933-12-08 1939-09-23 Frida Strauss Geb Ruppel Switch with arc extinguishing by compressed gas
DE1055643B (en) * 1954-07-03 1959-04-23 Licentia Gmbh Electric circuit breaker, in particular multiple switches, with arc extinguishing by a flowing pressure medium
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Publication number Priority date Publication date Assignee Title
WO2000044010A2 (en) * 1999-01-20 2000-07-27 Siemens Aktiengesellschaft High-voltage power circuit breaker comprising an insulating nozzle
WO2000044010A3 (en) * 1999-01-20 2000-11-02 Siemens Ag High-voltage power circuit breaker comprising an insulating nozzle
US6462295B1 (en) 1999-01-20 2002-10-08 Siemens Aktiengesellschaft High-voltage power circuit breaker comprising an insulating nozzle
US8591836B2 (en) 2003-06-23 2013-11-26 Applied Biosystems, Llc Caps for sample wells and microcards for biological materials

Also Published As

Publication number Publication date
ATE15296T1 (en) 1985-09-15
JPH0618097B2 (en) 1994-03-09
DE3360640D1 (en) 1985-10-03
EP0089524B1 (en) 1985-08-28
JPS58169835A (en) 1983-10-06
DE3209968A1 (en) 1983-09-29
US4490594A (en) 1984-12-25

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