EP0002685B1 - Fluid-blast circuit breaker - Google Patents

Fluid-blast circuit breaker Download PDF

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Publication number
EP0002685B1
EP0002685B1 EP78101559A EP78101559A EP0002685B1 EP 0002685 B1 EP0002685 B1 EP 0002685B1 EP 78101559 A EP78101559 A EP 78101559A EP 78101559 A EP78101559 A EP 78101559A EP 0002685 B1 EP0002685 B1 EP 0002685B1
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EP
European Patent Office
Prior art keywords
gas
contact member
movable
coil
blast
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Expired
Application number
EP78101559A
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German (de)
French (fr)
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EP0002685A1 (en
Inventor
Karl Zückler
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Siemens AG
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Siemens AG
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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
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the invention relates to a gas pressure switch with a movable switching element arranged in a gas-filled switching chamber and a counter-switching element which is spring-loaded in the switching-off direction and which follows the moving switching element at the start of the switching-off movement, and in which the interior of the switching chamber is divided by a wall whose central opening is penetrated by the moving switching element and also contains a second movable wall, by means of which the movement following the switch-off movement compresses the gas located between the movable and the standing wall.
  • Such a pressure gas switch is known from FIGS. 4 and 5 of US Pat. No. 3,985,988.
  • the movable contact piece carries a movable wall connected to it, through which the gas located between the movable wall and the standing wall is compressed during the opening movement. The resulting gas flow blows the arc between the contacts and facilitates its interruption.
  • the force exerted by the drive by which the switch-off movement is brought about, must additionally apply the force required to compress the gas.
  • the drive must therefore be dimensioned both for triggering the movement and for compressing the gas.
  • FR-OS 22 85 700 Another switch is described in FR-OS 22 85 700, the switching chamber of which is filled with sulfur hexafluoride.
  • the one switching piece is designed to be stationary.
  • the movable contact is spring-loaded in the switch-on direction by a spring in order to ensure the contact between arcing contacts lying parallel to the actual contacts in the switch-on position.
  • the switch-off movement carried out by the drive of the switch takes place against the force of this spring, which is compressed during the switch-off movement.
  • the movable contact piece carries a piston, which moves downward during the opening movement and compresses the gas contained in a cylinder surrounding the contact piece.
  • the invention has for its object to provide a gas pressure switch of the type mentioned, in which the quenching gas flow is triggered regardless of the current and regardless of the drive of the switch.
  • the movable wall consists of a piston which is spring-loaded in the switching-off direction and forms an end face of the switching chamber and which carries the counter-switching piece.
  • the movement of this piston is caused by the spring load alone when the counterpressure of the movable contact piece in the switched-on position is eliminated, the spring also performing the work required for compressing the gas located between the piston and the standing wall in the switching chamber.
  • the drive of the movable contact is relieved of this compression work.
  • the spring since the movable wall forms an end face of the switching chamber, the spring does not lie in the gas-filled space of the switching chamber, so that its dimensioning corresponding to the total work to be performed does not pose any difficulties.
  • a gas pressure switch according to the invention is shown schematically in section.
  • Fig. 2 shows schematically a second embodiment of a gas pressure switch according to the invention in a sectional view.
  • the compressed gas switch shown in Fig. 1 has a hollow cylindrical, for example made of porcelain switching chamber 1, in the interior 2 is filled as a gaseous extinguishing and insulating agent, sulfur hexafluoride.
  • a movable contact piece 3 is provided centrally in the interior, which interacts with a counter contact piece 4.
  • the counter switching element 4 is electrically connected to a terminal 6 via a current band 5.
  • the connection 6 is seated on a cap 7 which closes the switching chamber 1 at the end.
  • the cap 7 has a tubular support 8 directed into the interior 2, which consists at least partially of insulating material and holds a wall 9 dividing the switching chamber 1.
  • the wall 9 in turn carries a nozzle 10 which comprises the movable contact piece 3 in the switched-on position.
  • the carrier 8 is partially designed as a cylinder, in which a piston 11 is guided to move back and forth.
  • the piston is loaded in the switch-off direction by springs 12 which are supported against the cap 7.
  • the piston carries the counter-switching piece 4, which assumes the position shown on the right of the center line 13 in the switch-on position and the position shown on the left of the center line 13 in the switch-off position.
  • the movable contact piece 3 If the movable contact piece 3 is moved into the switch-off position in the direction of arrow 14 due to a switch-off command, the counter-contact piece 4 and the spring-loaded piston 11 follow the movable contact piece 3 a certain distance.
  • the gas located between the end face 15 of the piston 11 and the wall 9 is pre-compressed until the electrical isolation between the switching elements 3, 4 takes place.
  • the arc drawn is flushed and cooled by the compressed gas.
  • the contact piece 3 is pulled further down in the course of the switch-off movement until it leaves the nozzle 10, so that the arc burning in the space between the piston 11 and the wall 9, as a result of the pressure increase caused by the burning arc, a quenching gas flow through the nozzle 10 in Gear sets.
  • the counter-switching element 4 is surrounded by a coil 16, which is flowed through by the counter-switching element 4 after the electrical isolation of the movable switching element 3 and a magnetic field for additional Blowing the arc results.
  • the switching piece 3 is slotted in the region of its free end 3a in a cylindrical helix, so that it forms a second coil which is separated from the switch-off current, i. H. from the arc current.
  • This second coil 17 is connected to the first coil 16.
  • the first coil 16 is formed by a spirally slotted hollow cylinder, which consists of electrically conductive material and is rigidly connected to the piston 11.
  • the coil 17 is formed by a spirally slotted hollow cylindrical part of the movable contact piece 3.
  • a ferromagnetic body 18 is arranged in the interior of the hollow cylindrical part of the movable contact piece 3, which contributes to an amplification of the magnetic field.
  • the end faces 19, 20 of the coils 16, 17 carry erosion electrodes 21, which ensure high wear resistance under arcing stress.
  • the embodiment of the compressed gas switch according to the invention is particularly suitable for high interruption voltages and with low driving forces. It combines the advantages of pressure gas switches with current-dependent and current-independent extinguishing gas flow.

Description

Die Erfindung betrifft einen Druckgasschalter mit einem in einer gasgefüllten Schaltkammer angeordnetem beweglichen Schaltstück und einem in Ausschaltrichtung federbelastetem Gegenschaltstück das bei Beginn der Ausschaltbewegung des beweglichen Schaltstuckes diesem nachläuft, und bei dem der Innenraum der Schaltkammer von einer Wand unterteilt ist, deren Mittelöffnung vom beweglichen Schaltstück durchsetzt ist und außerdem eine zweite bewegliche Wand enthält, durch deren der Ausschaltbewegung folgende Bewegung das sich zwischen der beweglichen und der stehenden Wand befindliche Gas komprimiert wird.The invention relates to a gas pressure switch with a movable switching element arranged in a gas-filled switching chamber and a counter-switching element which is spring-loaded in the switching-off direction and which follows the moving switching element at the start of the switching-off movement, and in which the interior of the switching chamber is divided by a wall whose central opening is penetrated by the moving switching element and also contains a second movable wall, by means of which the movement following the switch-off movement compresses the gas located between the movable and the standing wall.

Ein derartiger Druckgasschalter ist aus den Fig. 4 und 5 der US-PS 3 985 988 bekannt. Bei diesem trägt das bewegliche Schaltstück eine mit ihm verbundene bewegliche Wand, durch welche bei der Ausschaltbewegung das sich zwischen der beweglichen Wand und der stehenden Wand befindliche Gas komprimiert wird. Die dabei entstehende Gasströmung bebläst den zwischen den Schaltstücken stehenden Lichtbogen und erleichtert seine Unterbrechung. Hierbei muß die von dem Antrieb ausgeübte Kraft, durch welche die Ausschaltbewegung hervorgerufen wird, noch zusätzlich die zur Komprimierung des Gases erforderliche Kraft aufbringen. Der Antrieb muß also sowohl für die Auslösung der Bewegung als auch für die Komprimierung des Gases dimensioniert sein.Such a pressure gas switch is known from FIGS. 4 and 5 of US Pat. No. 3,985,988. In this case, the movable contact piece carries a movable wall connected to it, through which the gas located between the movable wall and the standing wall is compressed during the opening movement. The resulting gas flow blows the arc between the contacts and facilitates its interruption. In this case, the force exerted by the drive, by which the switch-off movement is brought about, must additionally apply the force required to compress the gas. The drive must therefore be dimensioned both for triggering the movement and for compressing the gas.

Ferner ist es aus der DE-OS 23 49 246 bekannt, bei einem Druckgasschalter die Löschgasströmung durch einen im Verlauf der Ausschalthandlung gezogenen Hilfslichtbogen in Gang zu setzen. Diese bebläst den zwischen dem beweglichen Schaltstück und dem Gegenschaltstück gezogenen Lichtbogen. Daher ist die Löschgasströmung abhängig vom abzuschaltenden Strom bzw. den über den Lichtbogen fließenden Strom.Furthermore, it is known from DE-OS 23 49 246 to start the extinguishing gas flow in a compressed gas switch by means of an auxiliary arc drawn in the course of the switch-off action. This blows the arc drawn between the movable contact and the counter contact. The quenching gas flow therefore depends on the current to be switched off or the current flowing through the arc.

Bei einem anderen, in der US-PS 2280321 beschriebenen Druckgasschalter ist das Gegenschaltstück zum beweglichen Schaltstück in Ausschaltrichtung federbelastet und läuft dadurch bei Beginn der Ausschaltbewegung des beweglichen Schaltstückes diesem nach, bis ein am Gegenschaltstück befindlicher Kolben an der Stirnwand seines ihn umgebenden Zylinders zur Anlage gelangt. Diese Stirnwand trennt aber den Zylinder von der eigentlichen Schaltkammer, so daß in dieser keine Gaskomprimierung eintritt, wenn das Gegenschaltstück dem beweglichen Schaltstück nachläuft. Die Löschung des Lichtbogens wird also durch die Bewegung des mit dem Gegenschaltstück verbundenen Kolbens nicht beeinflußt.In another pressure gas switch described in US Pat. No. 2,280,321, the counter contact piece to the movable contact piece is spring-loaded in the switch-off direction and thus runs at the start of the switch-off movement of the movable contact piece until a piston located on the counter contact piece comes to bear against the end wall of the cylinder surrounding it . This end wall, however, separates the cylinder from the actual switching chamber, so that no gas compression occurs in the latter when the counter-switching element runs after the movable switching element. The quenching of the arc is therefore not influenced by the movement of the piston connected to the counter switching element.

In der FR-OS 22 85 700 ist ein weiterer Schalter beschrieben, dessen Schaltkammer mit Schwefelhexafluorid gefüllt ist. Hier ist das eine Schaltstück feststehend ausgebildet. Das bewegliche Schaltstück ist durch eine Feder in Einschaltrichtung federbelastet, um in Einschaltstellung den Kontakt zwischen parallel zu den eigentlichen Schaltstücken liegenden Lichtbogenkontakten zu gewährleisten. Die vom Antrieb des Schalters durchgeführte Ausschaltbewegung erfolgt gegen die Kraft dieser Feder, die bei der Ausschaltbewegung zusammengepreßt wird. Das bewegliche Schaltstück trägt einen Kolben, der sich bei der Ausschaltbewegung abwärts bewegt und das in einem das Schaltstück umgebenden Zylinder enthaltene Gas komprimiert. Dieses wird durch Öffnungen des beweglichen Schaltstückes an dessen Stirnfläche herausgedrückt, so daß es den zwischen den Schaltstücken entstandenen Lichtbogen bebläst und diesen auf die besonderen Lichtbogenkontakte treibt. Da außerdem eine das stehende Schaltstück umgebende Spule vorhanden ist, unterliegt der Lichtbogen zusätzlich zur Blaswirkung des komprimierten Gases noch einer magnetischen Beblasung, so daß seine Löschung vereinfacht ist. Auch hier wird die Komprimierung des Gases durch den Antrieb des beweglichen Schaltstückes hervorgerufen, der also zusätzlich zu der Ausschaltbewegung die Komprimierungsarbeit für das Gas und die Arbeit für das Zusammenpressen der das Schaltstück belastenden Feder aufbringen muß.Another switch is described in FR-OS 22 85 700, the switching chamber of which is filled with sulfur hexafluoride. Here the one switching piece is designed to be stationary. The movable contact is spring-loaded in the switch-on direction by a spring in order to ensure the contact between arcing contacts lying parallel to the actual contacts in the switch-on position. The switch-off movement carried out by the drive of the switch takes place against the force of this spring, which is compressed during the switch-off movement. The movable contact piece carries a piston, which moves downward during the opening movement and compresses the gas contained in a cylinder surrounding the contact piece. This is pressed out through openings in the movable contact piece on its end face, so that it blows the arc formed between the contact pieces and drives it onto the special arcing contacts. Since there is also a coil surrounding the stationary contact, the arc is subject to a magnetic blowing in addition to the blowing effect of the compressed gas, so that its extinguishing is simplified. Here, too, the compression of the gas is brought about by the drive of the movable contact piece, which in addition to the switch-off movement has to do the compression work for the gas and the work for compressing the spring loading the contact piece.

Der Erfindung liegt die Aufgabe zugrunde, einen Druckgasschalter der eingangs genannten Art anzugeben, bei dem die Löschgasströmung unabhängig vom Strom und unabhängig vom Antrieb des Schalters ausgelöst wird.The invention has for its object to provide a gas pressure switch of the type mentioned, in which the quenching gas flow is triggered regardless of the current and regardless of the drive of the switch.

Nach der Erfindung wird dies dadurch gelöst, daß die bewegliche Wand aus einem in Ausschaltrichtung federbelasteten, eine Stirnseite der Schaltkammer bildenden Kolben besteht, der das Gegenschaltstück trägt. Die Bewegung dieses Kolbens wird bei Wegfall des Gegendruckes des in Einschaltstellung anliegenden beweglichen Schaltstückes allein durch die Federbelastung bewirkt, wobei die Feder außerdem noch die zur Komprimierung des zwischen dem Kolben und der stehenden Wand in der Schaltkammer befindlichen Gases erforderliche Arbeit leistet. Der Antrieb des beweglichen Schaltstückes ist also von dieser Komprimierungsarbeit entlastet. Da außerdem die bewegliche Wand eine Stirnseite der Schaltkammer bildet, liegt die Feder nicht in dem gasgefüllten Raum der Schaltkammer, so daß ihre der zu leistenden Gesamtarbeit entsprechende Dimensionierung keinerlei Schwierigkeiten bereitet.According to the invention, this is achieved in that the movable wall consists of a piston which is spring-loaded in the switching-off direction and forms an end face of the switching chamber and which carries the counter-switching piece. The movement of this piston is caused by the spring load alone when the counterpressure of the movable contact piece in the switched-on position is eliminated, the spring also performing the work required for compressing the gas located between the piston and the standing wall in the switching chamber. The drive of the movable contact is relieved of this compression work. In addition, since the movable wall forms an end face of the switching chamber, the spring does not lie in the gas-filled space of the switching chamber, so that its dimensioning corresponding to the total work to be performed does not pose any difficulties.

Es ist vorteilhaft, bei dem Druckgasschalter nach der Erfindung das Gegenschaltstück von einer vom Ausschaltstrom nach der galvanischen Trennung vom beweglichen Schaltstück durchflossenen ersten Spule zu umgeben, der eine weitere mit dem beweglichen Schaltstück angetriebene, vom Ausschaltstrom durchflossene Spule entgegengeschaltet ist. Dadurch läßt sich ein Magnetfeld zur Beblasung des Lichtbogens günstig ausbilden, so daß die Löschbedingungen und damit die .Abschaltbedingungen hoher Ströme begünstigt sind. Das Vorsehen von zwei derartigen Spulen um beide Schaltstücke eines Schalters ist an sich aus der US-PS 3 858 015 und der DE-PS 646 031 bekannt. Dort ist auch die Möglichkeit beschrieben, eine derartige Spule von einem spiralisch geschlitzten hohlzylindrischen Teil des Schaltstückes zu bilden.It is advantageous in the case of the pressure gas switch according to the invention to surround the counter switching element with a first coil through which the breaking current flows after the galvanic separation from the movable switching element another coil driven by the movable switching element and through which the breaking current flows is connected in the opposite direction. As a result, a magnetic field for blowing the arc can be developed favorably, so that the quenching conditions and thus the .cutting conditions of high currents are favored. The provision of two such coils around both contact pieces of a switch is known per se from US Pat. No. 3,858,015 and DE-PS 646,031. There is also described the possibility of forming such a coil from a spirally slotted hollow cylindrical part of the switching element.

Anhand der Zeichnung sind Ausführungsbeispiele der Erfindung beschrieben und die Wirkungsweise erläutert.Exemplary embodiments of the invention are described with reference to the drawing and the mode of operation is explained.

In Fig. 1 ist ein Druckgasschalter nach der Erfindung schematisch im Schnitt dargestellt.In Fig. 1, a gas pressure switch according to the invention is shown schematically in section.

Die Fig. 2 zeigt schematisch eine zweite Ausführungsform eines Druckgasschalters nach der Erfindung in geschnittener Darstellung.Fig. 2 shows schematically a second embodiment of a gas pressure switch according to the invention in a sectional view.

Der in Fig. 1 dargestellte Druckgasschalter weist eine hohlzylindrische, beispielsweise aus Porzellan bestehende Schaltkammer 1 auf, in deren Innenraum 2 als gasförmiges Lösch- und Isoliermittel Schwefelhexafluorid eingefüllt ist. Zentrisch im Innenraum ist ein bewegliches Schaltstück 3 vorgesehen, das mit einem Gegenschaltstück 4 zusammenwirkt. Das Gegenschaltstück 4 ist elektrisch über ein Stromband 5 mit einem Anschluß 6 verbunden. Der Anschluß 6 sitzt auf einer die Schaltkammer 1 stirnseitig verschließenden Kappe 7. Die Kappe 7 hat einen in den Innenraum 2 gerichteten rohrförmigen Träger 8, der zumindest teilweise aus isolierendem Material besteht und eine die Schaltkammer 1 unterteilende Wand 9 haltert. Die Wand 9 trägt ihrerseits eine Düse 10, die das bewegliche Schaltstück 3 in der Einschaltstellung umfaßt.The compressed gas switch shown in Fig. 1 has a hollow cylindrical, for example made of porcelain switching chamber 1, in the interior 2 is filled as a gaseous extinguishing and insulating agent, sulfur hexafluoride. A movable contact piece 3 is provided centrally in the interior, which interacts with a counter contact piece 4. The counter switching element 4 is electrically connected to a terminal 6 via a current band 5. The connection 6 is seated on a cap 7 which closes the switching chamber 1 at the end. The cap 7 has a tubular support 8 directed into the interior 2, which consists at least partially of insulating material and holds a wall 9 dividing the switching chamber 1. The wall 9 in turn carries a nozzle 10 which comprises the movable contact piece 3 in the switched-on position.

Der Träger 8 ist teilweise als Zylinder ausgebildet, in dem ein Kolben 11 hin und her beweglich geführt ist. Der Kolben ist in Ausschaltrichtung von Federn 12 belastet, die sich gegen die Kappe 7 abstützen. Der Kolben trägt das Gegenschaltstück 4, das in der Einschaltstellung die rechts der Mittellinie 13 und in der Ausschaltstellung die links der Mittellinie 13 gezeichnete Position einnimmt.The carrier 8 is partially designed as a cylinder, in which a piston 11 is guided to move back and forth. The piston is loaded in the switch-off direction by springs 12 which are supported against the cap 7. The piston carries the counter-switching piece 4, which assumes the position shown on the right of the center line 13 in the switch-on position and the position shown on the left of the center line 13 in the switch-off position.

Wenn das bewegliche Schaltstück 3 aufgrund eines Ausschaltkommandos in Pfeilrichtung 14 in die Ausschaltstellung überführt wird, läuft das Gegenschaltstück 4 und der federbelastete Kolben 11 dem beweglichen Schaltstück 3 eine bestimmte Strecke nach. Dabei wird das zwischen der Stirnseite 15 des Kolbens 11 und der Wand 9 befindliche Gas vorkomprimiert, bis die galvanische Trennung zwischen den Schaltstücken 3, 4 erfolgt. Der dabei gezogene Lichtbogen wird von dem komprimierten Gas bespült und gekühlt. Das Schaltstück 3 wird im Verlauf der Ausschaltbewegung weiter nach unten gezogen, bis es die Düse 10 verläßt, so daß der im Raum zwischen dem Kolben 11 und der Wand 9 brennende Lichtbogen infolge der durch den brennenden Lichtbogen bewirkten Druckerhöhung eine Löschgasströmung durch die Düse 10 in Gang setzt.If the movable contact piece 3 is moved into the switch-off position in the direction of arrow 14 due to a switch-off command, the counter-contact piece 4 and the spring-loaded piston 11 follow the movable contact piece 3 a certain distance. The gas located between the end face 15 of the piston 11 and the wall 9 is pre-compressed until the electrical isolation between the switching elements 3, 4 takes place. The arc drawn is flushed and cooled by the compressed gas. The contact piece 3 is pulled further down in the course of the switch-off movement until it leaves the nozzle 10, so that the arc burning in the space between the piston 11 and the wall 9, as a result of the pressure increase caused by the burning arc, a quenching gas flow through the nozzle 10 in Gear sets.

Bei dem in Fig. 2 dargestellten Ausführungsbeispiel, bei dem gleiche Teile mit gleichen Bezugszeichen versehen sind, ist das Gegenschaltstück 4 von einer Spule 16 umgeben, die nach der galvanischen Trennung des beweglichen Schaltstückes 3 vom Gegenschaltstück 4 vom Strom durchflossen ist und ein Magnetfeld zur zusätzlichen Beblasung des Lichtbogens ergibt. Das Schaltstück 3 ist im Bereich seines freien Endes 3a in einer zylindrischen Schraubenlinie geschlitzt, so daß es eine zweite Spule bildet, die vom Ausschaltstrom, d. h. vom Lichtbogenstrom, durchflossen ist. Diese zweite Spule 17 ist der ersten Spule 16 entgegengeschaltet.In the embodiment shown in Fig. 2, in which the same parts are provided with the same reference numerals, the counter-switching element 4 is surrounded by a coil 16, which is flowed through by the counter-switching element 4 after the electrical isolation of the movable switching element 3 and a magnetic field for additional Blowing the arc results. The switching piece 3 is slotted in the region of its free end 3a in a cylindrical helix, so that it forms a second coil which is separated from the switch-off current, i. H. from the arc current. This second coil 17 is connected to the first coil 16.

Ersichtlich ist die erste Spule 16 von einem spiralig geschlitzten Hohlzylinder gebildet, der aus elektrisch leitendem Material besteht und mit dem Kolben 11 starr verbunden ist. Die Spule 17 ist von einem spiralig geschlitzten hohlzylindrischen Teil des beweglichen Schaltstückes 3 gebildet. Im Innern des hohlzylindrischen Teiles des beweglichen Schaltstückes 3 ist ein ferromagnetischer Körper 18 angeordnet, der zu einer Verstärkung des magnetischen Feldes beiträgt. Die Stirnflächen 19, 20 der Spulen 16, 17 tragen Abbrandelektroden 21, die eine hohe Verschleißfestigkeit unter Lichtbogenbeanspruchung gewährleisten.As can be seen, the first coil 16 is formed by a spirally slotted hollow cylinder, which consists of electrically conductive material and is rigidly connected to the piston 11. The coil 17 is formed by a spirally slotted hollow cylindrical part of the movable contact piece 3. A ferromagnetic body 18 is arranged in the interior of the hollow cylindrical part of the movable contact piece 3, which contributes to an amplification of the magnetic field. The end faces 19, 20 of the coils 16, 17 carry erosion electrodes 21, which ensure high wear resistance under arcing stress.

Die erfindungsgemäße Ausführungsform des Druckgasschalters ist besonders für hohe Unterbrechungsspannungen und bei kleinen Antriebskräften geeignet. Sie vereinigt die Vorteile der Druckgasschalter mit stromabhängiger und stromunabhängiger Löschgasströmung.The embodiment of the compressed gas switch according to the invention is particularly suitable for high interruption voltages and with low driving forces. It combines the advantages of pressure gas switches with current-dependent and current-independent extinguishing gas flow.

Claims (7)

1. Gas-blast contact breaker including a movable contact member (3) which is arranged in a gas-filled switching chamber (1) and a counter-contact member (4) which is springloaded in the break direction and which at the commencement of the breaking movement of the moving contact member (3) follows the latter, and wherein the interior (2) of the switching chamber (1) is divided by a wall (9) whose centre opening is penetrated by the movable contact member (3), and furthermore contains a second movable wall by means of whose movement, which follows the breaking movement, the gas which is present between the movable and the stationary wall (9) is compressed, characterised in that the movable wall consists of a plunger (11) which is springloaded in the break direction, forms a front side of the switching chamber (1) and supports the counter-contact member (4).
2. Gas-blast contact breaker as claimed in Claim 1, characterised in that following the galvanic separation from the movable contact member (3) the .counter-contact member (4) is surrounded by a first coil (16) which carries the breaking current and to which a further coil (17) is inversely connected, this further coil being operated by the movable contact member (3) and carrying the breaking current.
3. Gas-blast contact breaker as claimed in Claim 1 or 2, characterised in that the first coil (16) is formed by a spirally slotted hollow cylinder which consists of electrically conductive material and is rigidly connected to the plunger ( 11 ).
4. Gas-blast contact breaker as claimed in one of Claims 1 to 3, characterised in that the second coil (17) is formed by a spirally slotted hollow-cylindrical component (3a) of the movable contact member (3).
5. Gas-blast contact breaker as claimed in Claim 4, characterised in that a ferromagnetic body (18) is arranged in the inside of the hollow-cylindrical component (3a) of the movable contact member (3).
6. Gas-blast contact breaker as claimed in one of Claims 1 to 5, characterised in that the front sides (19, 20) of the coils (16, 17) support consumption electrodes (21).
EP78101559A 1977-12-30 1978-12-04 Fluid-blast circuit breaker Expired EP0002685B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2759267 1977-12-30
DE2759267A DE2759267C3 (en) 1977-12-30 1977-12-30 Gas switch

Publications (2)

Publication Number Publication Date
EP0002685A1 EP0002685A1 (en) 1979-07-11
EP0002685B1 true EP0002685B1 (en) 1980-08-06

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EP78101559A Expired EP0002685B1 (en) 1977-12-30 1978-12-04 Fluid-blast circuit breaker

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US (1) US4225762A (en)
EP (1) EP0002685B1 (en)
JP (1) JPS5494672A (en)
DE (3) DE2759267C3 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5553829A (en) * 1978-10-17 1980-04-19 Mitsubishi Electric Corp Gas switch
US4359616A (en) * 1978-09-04 1982-11-16 Mitsubishi Denki Kabushiki Kaisha Self-extinguishing switch
EP0041081A1 (en) * 1980-06-02 1981-12-09 BBC Aktiengesellschaft Brown, Boveri & Cie. Electric self blast switch
US4327263A (en) * 1980-06-17 1982-04-27 Mitsubishi Denke Kabushiki Kaisha Switching device
FR2487113A1 (en) * 1980-07-17 1982-01-22 Merlin Gerin DOUBLE ROTATING ARC SWITCH
CH654950A5 (en) 1980-07-18 1986-03-14 Bbc Brown Boveri & Cie HIGH VOLTAGE CIRCUIT BREAKERS.
FR2554631B1 (en) * 1983-11-07 1986-09-05 Merlin Gerin ELECTRIC SWITCH WITH ROTATING ARC
DE3435967A1 (en) * 1984-08-22 1986-03-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau EXHAUST GAS SWITCH
FR2622737B1 (en) * 1987-11-04 1995-04-14 Merlin Gerin SELF-EXPANSIONAL ELECTRIC CIRCUIT BREAKER WITH VARIABLE EXTINCTION CHAMBER VOLUME
FR2662540B1 (en) * 1990-05-23 1992-07-31 Alsthom Gec MEDIUM VOLTAGE CIRCUIT BREAKER.
JP3234853B2 (en) * 1995-08-08 2001-12-04 三菱電機株式会社 DC cutoff device
FR2985081B1 (en) * 2011-12-21 2015-03-06 Alstom Technology Ltd DEVICE FOR PROTECTION AGAINST PARTICLES GENERATED BY AN ELECTRIC SWITCHING ARC
DE102013205945A1 (en) * 2013-04-04 2014-10-09 Siemens Aktiengesellschaft Disconnecting switch device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE437053A (en) * 1938-11-17
US3014107A (en) * 1959-01-02 1961-12-19 Gen Electric Vacuum switch
DE2349263C2 (en) * 1973-10-01 1982-08-26 Brown, Boveri & Cie Ag, 6800 Mannheim Electric pressure gas switch
DE2349246A1 (en) 1973-10-01 1975-04-03 Bbc Brown Boveri & Cie ELECTRIC SWITCH
DE2423103C2 (en) 1974-05-13 1986-09-18 Brown, Boveri & Cie Ag, 6800 Mannheim Electrical pressurized gas circuit breaker

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Vol. 76, 1972, Nr. 14370b, Columbus, Ohio, USA, JILEK JIRI et al. "Neurotropic basic enol ethers of the dibenzo (b,f)-thiepin series", Seite 371, linke Spalte *
Medicinal Chemistry, Third Ed. Part I, Bunger A, New York, U.S.A. 1970, Seite 75, Part II Seiten 1410-1412, Pschyrembel, Klin. Wörterbuch, 253 Aufl, Berlin, New York 1977, S. 996-997 *

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DE2759267B2 (en) 1980-01-10
JPS5494672A (en) 1979-07-26
DE7740357U1 (en) 1980-11-13
DE2860124D1 (en) 1980-11-27
US4225762A (en) 1980-09-30
DE2759267A1 (en) 1979-07-05
DE2759267C3 (en) 1980-09-11
EP0002685A1 (en) 1979-07-11

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