EP0821382A1 - High-voltage circuit breaker of self-blasting type - Google Patents

High-voltage circuit breaker of self-blasting type Download PDF

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Publication number
EP0821382A1
EP0821382A1 EP97401587A EP97401587A EP0821382A1 EP 0821382 A1 EP0821382 A1 EP 0821382A1 EP 97401587 A EP97401587 A EP 97401587A EP 97401587 A EP97401587 A EP 97401587A EP 0821382 A1 EP0821382 A1 EP 0821382A1
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EP
European Patent Office
Prior art keywords
volume
compression
circuit breaker
valve
rods
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97401587A
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German (de)
French (fr)
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EP0821382B1 (en
Inventor
Edmond Thuries
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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Publication of EP0821382A1 publication Critical patent/EP0821382A1/en
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Publication of EP0821382B1 publication Critical patent/EP0821382B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/901—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
    • H01H33/70—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
    • H01H2033/906—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 with pressure limitation in the compression volume, e.g. by valves or bleeder openings
    • 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
    • H01H2033/908—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 using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume

Definitions

  • the present invention relates to a circuit breaker with high voltage self-blowing arc.
  • circuit breaker is described for example in the European patent application no. 0 475 270.
  • the circuit breaker includes, for each phase, a insulating jacket filled with gas with good properties dielectrics, such as sulfur hexafluoride SF6, under a pressure of a few thousand hectopascals.
  • gas with good properties dielectrics such as sulfur hexafluoride SF6, under a pressure of a few thousand hectopascals.
  • a mobile assembly actuated by a control, and comprising movable main contacts and arcing contacts; the mobile assembly includes two communicating volumes, one called compression volume, cooperating with one fixed piston and the other, said volume of blowing, opening into a blowing nozzle.
  • a valve arranged in the blowing volume prevents gases from flow back into the compression volume.
  • An object of the present invention is to provide a circuit breaker in which the pressure increase is stopped by simple means.
  • the gas of the compression volume is evacuated through openings in the piston of blowing, these openings being associated with means allowing them to be kept closed between the start of the compression of the compression volume and closing the valve and open them when the valve closes, said means comprising fixed rods sliding in said openings of the piston, these rods comprising recesses or longitudinal notches or grooves or grooves on a portion of their length, chosen so that the hollowed out part rods enters the openings when the valve closed.
  • the rods are arranged so as to lie for their greatest part inside the compression volume when the circuit breaker is in the on position.
  • the stems the stems are arranged so as to be for the most part at outside the compression volume when the circuit breaker is in the engaged position.
  • a cylinder, carrying the movable arcing contacts includes notches or grooves or grooves or recesses, cooperating with the piston for the evacuation of the compression gas at the end of compression.
  • reference 1 represents a insulating jacket, for example ceramic, shaped cylindrical with axis xx, provided with fins such as the fin 2.
  • the interior of the envelope contains a good gas dielectric properties, such as sulfur hexafluroride SF6, under pressure from a few thousand hectopascals.
  • a good gas dielectric properties such as sulfur hexafluroride SF6
  • a set fixed including a crown of contact fingers 3 for the passage of the permanent current, arranged at the end of a metal tube 4, and a metal rod 5 constituting the fixed arcing contact, the end of which is made in one alloy resistant to the effects of the arc.
  • Tube 4 and rod 5 are connected to a first outlet of the circuit breaker, not shown.
  • the room furthermore a mobile assembly comprising essentially two metallic parts substantially cylindrical 7 and 8, coaxial, mechanically secured by a transverse crown 9.
  • a first end of the inner cylinder 7 (to the right of the figure) is connected mechanically to a control not shown; the second end of cylinder 7 wears a crown of contact 10 protected by a corona hood 11.
  • These contact fingers constitute the movable arcing contact and cooperates with rod 5-5A.
  • the cylinder 8 carries at a first end (on the left in Fig. 1) a cylinder 13 cooperating with the fingers 3 for the passage of the permanent current.
  • the cylinders 7 and 8 and the crown 9 define two volumes V1 and V2, respectively designated by volume of blowing and compression volume.
  • the blowing volume V1 opens on a blowing nozzle 14 fixed to the first end of the tube 8.
  • the blowing volume V1 communicates with compression volume V2 through openings 16 practiced in crown 9; these openings can be obstructed by an annular valve 17 arranged so as to prohibit the passage of gas from the blowing volume to the volume compression.
  • the compression volume V2 is closed at its end opposite the crown 9, by a fixed annular piston 19, arranged at the end of a fixed metallic tubular piece 20.
  • This part 20 is electrically connected to its end opposite to that carrying the piston 19, at a second outlet not shown.
  • Cylinder 8 is provided with sliding electrical contacts 21, for example of accordion type, to ensure the passage of current from tube 8 to the tubular part 20.
  • a plurality of metal rods 22 fixed by one end to the end of the cylinder 7 near the crown 9, and passing through openings in piston 19. These rods bear over part of their length, recesses or grooves or notches or transverse grooves 22A, for example 3 in number, as shown in Fig. 3 which is a view of a section of a rod 22, made at the level of the zone grooves.
  • the cylinder 7 may also include, on its outer periphery, grooves or indentations or rectilinear grooves axilaes 7A, arranged like the recesses or indentations or grooves or grooves 22A.
  • the circuit breaker works as follows.
  • the current flows from the first to second outlet when crossing successively the tube 4, the fingers 3, the cylinder 13 the cylinder 7, the sliding contacts 21 and the tube 20.
  • Main contacts 3 and 13 are separate and the current switches to the arcing contacts.
  • the gas of volumes V1 and V2 is compressed under the action of piston.
  • the gas from the volume V1 relaxes and blows the arc.
  • Fig. 4 shows an alternative embodiment of the invention in which the notched stems, referenced now 22 ', are arranged outside the volume of compression. Operation is identical to that described previously.

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  • Circuit Breakers (AREA)

Abstract

The Automatic Arc Extinguisher has a fixed contact arc (5-5A) and moving assembly contact (3). There is an upper compression volume, and an upper forward area of arc extinguishing. A valve (17) controls entry and exit to the arc extinguishing area. The valve is opened and closed by fixed rods (22,22') sliding in piston openings (19). Gases passing through the forward area (14) near the contacts extinguish the arc.

Description

La présente invention est relative à un disjoncteur à haute tension à auto-soufflage d'arc.The present invention relates to a circuit breaker with high voltage self-blowing arc.

Un tel disjoncteur est décrit par exemple dans la demande de brevet européen n° 0 475 270.Such a circuit breaker is described for example in the European patent application no. 0 475 270.

Le disjoncteur comprend, pour chaque phase, une enveloppe isolante remplie de gaz à bonnes propriétés diélectriques, tel que l'hexafluorure de soufre SF6, sous une pression de quelques milliers d'hectopascals.The circuit breaker includes, for each phase, a insulating jacket filled with gas with good properties dielectrics, such as sulfur hexafluoride SF6, under a pressure of a few thousand hectopascals.

A l'intérieur de l'enveloppe, on trouve un ensemble fixe comprenant des contacts dits contacts pricipaux fixes pour le passage du courant permanent, et des contacts d'arc.Inside the envelope, there is a set fixed including contacts called fixed main contacts for the passage of permanent current, and arcing contacts.

On trouve également un ensemble mobile, actionné par une commande, et comprenant des contacts principaux mobiles et des contacts d'arc; l'ensemble mobile comprend deux volumes communiquant, l'un dit volume de compression, coopérant avec un piston fixe et l'autre, dit volume de soufflage, débouchant dans une buse de soufflage. Un clapet disposé dans le volume de soufflage empêche les gaz de refluer dans le volume de compression. Le fonctionnement d'un tel disjoncteur est le suivant.There is also a mobile assembly, actuated by a control, and comprising movable main contacts and arcing contacts; the mobile assembly includes two communicating volumes, one called compression volume, cooperating with one fixed piston and the other, said volume of blowing, opening into a blowing nozzle. A valve arranged in the blowing volume prevents gases from flow back into the compression volume. The functioning of such a circuit breaker is as follows.

A l'apparition d'un défaut, un ordre est donné à la commande qui entraíne l'ensemble mobile. Le gaz du volume de compression et du volume de soufflage est comprimé par le déplacement relatif de l'ensemble mobile et du piston fixe.When a fault occurs, an order is given to the command that drives the mobile assembly. The volume gas compression and the blowing volume is compressed by the relative movement of the mobile assembly and the fixed piston.

A la séparation des contacts d'arc, un arc jaillit qui échauffe le gaz; la pression dans le volume de soufflage augmente de manière très importante et ferme le clapet. Au premier passage par zéro du courant, le gaz du volume de soufflage se détend et souffle l'arc.At the separation of the arcing contacts, an arcing arises which heats the gas; the pressure in the blowing volume increases very significantly and closes the valve. At first zero crossing of the current, the gas of the volume of blowing relaxes and blows the arc.

Pendant la durée séparant la fermeture du clapet et le soufflage de l'arc, l'ensemble mobile continue à se déplacer de sorte que le gaz du volume de compression est de plus en plus comprimé. Cette compression supplémentaire est non 5 seulement inutile, puisque le volume de compression est fermé et que le gaz qu'il contient ne contribue pas au soufflage, mais nuisible car elle nécessite de l'énergie nécessairement empruntée à la commande qu'il faut dimensionner en conséquence. La croissance de la pression dans le volume de compression doit donc cesser dès la fermeture du clapet.During the time between closing the valve and the arc blowing, the moving assembly continues to move so the gas in the compression volume is growing more compressed. This additional compression is not 5 only unnecessary, since the compression volume is closed and that the gas it contains does not contribute to the blowing, but harmful because it requires energy necessarily borrowed from the command it takes size accordingly. Pressure growth in the compression volume must therefore stop as soon as closing the valve.

Dans le document précité, ce problème est résolu en rendant le piston semi-mobile et en lui permettant de se déplacer contre l'action de ressorts tarés, dans le même sens que l'ensemble mobile lors de l'opération de déclenchement du disjoncteur.In the aforementioned document, this problem is solved by making the piston semi-mobile and allowing it to move against the action of calibrated springs, in the same sense that the moving assembly during the operation of tripping of the circuit breaker.

Cette solution est onéreuse car elle nécessite des ressorts et des moyen de tarage de ces ressorts.This solution is expensive because it requires springs and means for calibrating these springs.

Une solution analogue est décrite dans le document FR 2 264 380 A. Une solution voisine, utilisant des soupapes tarées, est décrite dans le document EP 0 175 954 A.A similar solution is described in the document FR 2 264 380 A. A similar solution, using valves calibrated, is described in document EP 0 175 954 A.

Un but de la présente invention est de réaliser un disjoncteur dans lequel l'augmentation de pression est arrêtée par des moyens simples.An object of the present invention is to provide a circuit breaker in which the pressure increase is stopped by simple means.

Selon l'invention, le gaz du volume de compression est évacué grâce à des ouvertures pratiquées dans le piston de soufflage, ces ouvertures étant associées à des moyens permettant de les maintenir fermées entre le début de la compression du volume de compression et la fermeture du clapet et de les ouvrir à la fermeture du clapet, lesdits moyens comprenant des tiges fixes coulissant dans lesdites ouvertures du piston, ces tiges comprenant des évidements ou échancrures ou rainures ou cannelures longitudinaux sur une portion de leur longueur, choisie pour que la partie évidée des tiges parvienne dans les ouvertures lorsque le clapet se ferme.According to the invention, the gas of the compression volume is evacuated through openings in the piston of blowing, these openings being associated with means allowing them to be kept closed between the start of the compression of the compression volume and closing the valve and open them when the valve closes, said means comprising fixed rods sliding in said openings of the piston, these rods comprising recesses or longitudinal notches or grooves or grooves on a portion of their length, chosen so that the hollowed out part rods enters the openings when the valve closed.

Dans un mode préféré de réalisation, les tiges sont disposées de manière à se trouver pour leur plus grande partie à l'intérieur du volume de compression lorsque le disjoncteur est en position enclenchée.In a preferred embodiment, the rods are arranged so as to lie for their greatest part inside the compression volume when the circuit breaker is in the on position.

En variante, les tiges les tiges sont disposées de manière à se trouver pour leur plus grande partie à l'extérieur du volume de compression lorsque le disjoncteur est en position enclenchée.Alternatively, the stems the stems are arranged so as to be for the most part at outside the compression volume when the circuit breaker is in the engaged position.

Un cylindre, portant les contacts mobiles d'arc, comprend des échancrures ou cannelures ou rainures ou évidements, coopérant avec le piston pour l'évacuation du gaz de compression en fin de compression.A cylinder, carrying the movable arcing contacts, includes notches or grooves or grooves or recesses, cooperating with the piston for the evacuation of the compression gas at the end of compression.

L'invention sera bien comprise à la lecture de la description donnée ci-après de deux modes de réalisation de l'invention, en référence au dessin annexé dans lequel:

  • la figure 1 est une vue partielle en coupe axiale d'une chambre de coupure d'un disjoncteur, représentée en position enclenchée,
  • la figure 2 est une vue partielle en coupe axiale de la même chambre de coupure, représentée en cours de déclenchement,
  • la figure 3 est une vue en section d'une tige équipant le disjoncteur,
  • la figure 4 est une vue partielleen coupe axiale d'une variante de réalisation d'une chambre de coupure, représenté en position enclenchée.
The invention will be clearly understood on reading the description given below of two embodiments of the invention, with reference to the attached drawing in which:
  • FIG. 1 is a partial view in axial section of a breaking chamber of a circuit breaker, shown in the engaged position,
  • FIG. 2 is a partial view in axial section of the same breaking chamber, shown during tripping,
  • FIG. 3 is a section view of a rod fitted to the circuit breaker,
  • Figure 4 is a partial view in axial section of an alternative embodiment of a breaking chamber, shown in the engaged position.

Dans la Fig. 1, la référence 1 représente une enveloppe isolante, par exemple en céramique, de forme cylindrique d'axe xx, munie d'ailettes telle que l'ailette 2.In Fig. 1, reference 1 represents a insulating jacket, for example ceramic, shaped cylindrical with axis xx, provided with fins such as the fin 2.

L'intérieur de l'enveloppe contient un gaz à bonnes propriétés diélectriques, tel que l'hexaflurorure de soufre SF6, sous une pression de quelques milliers d'hectopascals.The interior of the envelope contains a good gas dielectric properties, such as sulfur hexafluroride SF6, under pressure from a few thousand hectopascals.

A l'intérieur de l'enveloppe se trouve un ensemble fixe comprenant une couronne de doigts de contact 3 pour le passage du courant permanent, disposée à l'extrémité d'un tube métallique 4, et une tige métallique 5 constituant le contact d'arc fixe et dont l'extrémité est réalisée en un alliage résistant aux effets de l'arc. Le tube 4 et la tige 5 sont reliés à une première prise de courant du disjoncteur, non représentée. Inside the envelope is a set fixed including a crown of contact fingers 3 for the passage of the permanent current, arranged at the end of a metal tube 4, and a metal rod 5 constituting the fixed arcing contact, the end of which is made in one alloy resistant to the effects of the arc. Tube 4 and rod 5 are connected to a first outlet of the circuit breaker, not shown.

La chambre en outre un ensemble mobile comprenant essentiellement deux parties métalliques sensiblement cylindriques 7 et 8, coaxiales, solidarisées mécaniquement par une couronne transversale 9. Une première extrémité du cylindre intérieur 7 (à droite de la figure) est relié mécaniquement à une commande non représentée; la seconde extrémité du cylindre 7 porte une couronne de doigts de contact 10 protégés par un capot pare-effluves 11. Ces doigts de contact constituent le contact d'arc mobile et coopère avec la tige 5-5A.The room furthermore a mobile assembly comprising essentially two metallic parts substantially cylindrical 7 and 8, coaxial, mechanically secured by a transverse crown 9. A first end of the inner cylinder 7 (to the right of the figure) is connected mechanically to a control not shown; the second end of cylinder 7 wears a crown of contact 10 protected by a corona hood 11. These contact fingers constitute the movable arcing contact and cooperates with rod 5-5A.

Le cylindre 8 porte à une première extrémité (à gauche dans la Fig.1) un cylindre 13 coopérant avec les doigts 3 pour le passage du courant permanent.The cylinder 8 carries at a first end (on the left in Fig. 1) a cylinder 13 cooperating with the fingers 3 for the passage of the permanent current.

Les cylindres 7 et 8 et la couronne 9 définissent deux volumes V1 et V2, respectivement désignés par volume de soufflage et volume de compression. Le volume de soufflage V1 s'ouvre sur une buse de soufflage 14 fixée à la première extrémité du tube 8. Le volume de soufflage V1 communique avec le volume de compression V2 par des ouvertures 16 pratiquées dans la couronne 9; ces ouvertures peuvent être obstruées par un clapet annulaire 17 disposé de manière à interdire le passage du gaz du volume de soufflage au volume de compression.The cylinders 7 and 8 and the crown 9 define two volumes V1 and V2, respectively designated by volume of blowing and compression volume. The blowing volume V1 opens on a blowing nozzle 14 fixed to the first end of the tube 8. The blowing volume V1 communicates with compression volume V2 through openings 16 practiced in crown 9; these openings can be obstructed by an annular valve 17 arranged so as to prohibit the passage of gas from the blowing volume to the volume compression.

Le volume de compression V2 est fermé, à son extrémité opposée à la couronne 9, par un piston annulaire fixe 19, disposé à l'extrémité d'une pièce tubulaire métallique fixe 20. Cette pièce 20 est reliée électriquement, à son extrémité opposée à celle portant le piston 19, à une seconde prise de courant non représentée. Le cylindre 8 est muni de contacts électriques glissants 21, par exemple de type accordéon, pour assurer le passage du courant du tube 8 à la pièce tubulaire 20.The compression volume V2 is closed at its end opposite the crown 9, by a fixed annular piston 19, arranged at the end of a fixed metallic tubular piece 20. This part 20 is electrically connected to its end opposite to that carrying the piston 19, at a second outlet not shown. Cylinder 8 is provided with sliding electrical contacts 21, for example of accordion type, to ensure the passage of current from tube 8 to the tubular part 20.

A l'intérieur du volume de compression V2 sont disposées, parallèlement à l'axe de l'enveloppe, une pluralité de tiges métalliques 22, fixée par une extrémité à l'extrémité du cylindre 7 voisine de la couronne 9, et passant dans des ouvertures du piston 19. Ces tiges portent sur une partie de leur longueur des évidements ou rainures ou échancrures ou cannelures transversaux 22A, par exemple au nombre de 3, comme le montre la Fig.3 qui est une vue d'une section d'une tige 22, pratiquée au droit de la zone des rainures.Inside the compression volume V2 are arranged parallel to the axis of the envelope, a plurality of metal rods 22, fixed by one end to the end of the cylinder 7 near the crown 9, and passing through openings in piston 19. These rods bear over part of their length, recesses or grooves or notches or transverse grooves 22A, for example 3 in number, as shown in Fig. 3 which is a view of a section of a rod 22, made at the level of the zone grooves.

Le cylindre 7 peut comporter également, sur sa périphérie extérieure, des rainures ou échancrures ou cannelures rectilignes axilaes 7A, disposées comme les évidements ou échancrures ou rainures ou cannelures 22A.The cylinder 7 may also include, on its outer periphery, grooves or indentations or rectilinear grooves axilaes 7A, arranged like the recesses or indentations or grooves or grooves 22A.

Le fonctionnement du disjoncteur est le suivant.The circuit breaker works as follows.

En position enclenchée, le courant circule de la première à la seconde prise de courant en traversant successivement le tube 4, les doigts 3, le cyndre 13 le cylindre 7, les contacts glissants 21 et le tube 20.In the engaged position, the current flows from the first to second outlet when crossing successively the tube 4, the fingers 3, the cylinder 13 the cylinder 7, the sliding contacts 21 and the tube 20.

Au déclenchement, l'ensemble mobile est tiré vers la droite de la figure 1. Les contacts principaux 3 et 13 se séparent et le courant commute sur les contacts d'arc. Le gaz des volumes V1 et V2 est comprimé sous l'action du piston.On triggering, the mobile assembly is pulled towards the right of figure 1. Main contacts 3 and 13 are separate and the current switches to the arcing contacts. The gas of volumes V1 and V2 is compressed under the action of piston.

A la séparation des contacts d'arc 5-5A et 10, un arc jaillit et échauffe le gaz contenu dans le volume V1. Le clapet 17 se ferme.At the separation of the arcing contacts 5-5A and 10, an arcing springs and heats the gas contained in volume V1. The valve 17 closes.

A ce stade du déplacement de l'ensemble mobile, il n'est plus nécessaire de comprimer le volume V2 et c'est la raison pour laquelle l'invention prévoit d'évacuer le gaz de ce volume.At this stage of the movement of the mobile assembly, it no longer need to compress volume V2 and this is the reason why the invention plans to evacuate the gas from this volume.

Les échancrures des tiges 22, et celles du cylindre 7, atteignent les ouvertures du piston (Fig.2), de sorte que le gaz du volume V1 peut s'échapper sans nécessiter d'énergie de compression.The notches of the rods 22, and those of the cylinder 7, reach the piston openings (Fig. 2), so that the gas of volume V1 can escape without requiring energy compression.

Au premier passage par zéro du courant, le gaz du volume V1 se détend et souffle l'arc.At the first zero crossing of the current, the gas from the volume V1 relaxes and blows the arc.

La Fig. 4 représente une variante de réalisation de l'invention dans laquelle les tiges échancrées, référencées maintenant 22', sont disposées à l'extérieur du volume de compression. Le fonctionnement est identique à celui décrit précédemment.Fig. 4 shows an alternative embodiment of the invention in which the notched stems, referenced now 22 ', are arranged outside the volume of compression. Operation is identical to that described previously.

La solution de l'invention est simple et s'applique aussi bien aux disjoncteurs de type "ouvert" qu'aux disjoncteurs à enveloppe métallique à la terre (type "blindé").The solution of the invention is simple and applies for both "open" type circuit breakers and metal casing earthed circuit breakers (type "armored").

Claims (4)

Disjoncteur à haute tension à isolation gazeuse à soufflage d'arc comprenant un contact principal fixe (3) et un contact d'arc fixe (5- 5A) et un ensemble mobile comprenant un contact principal (3), un contact d'arc (10), un volume de compression (V2) coopérant avec un piston fixe (19) et en liaison avec un volume de soufflage (V1) débouchant sur une buse de soufflage (14), ledit volume de compression étant muni d'un clapet (17) interdisant le passage du gaz du volume de soufflage vers le volume de compression, caractérisé en ce que le piston comprend des ouvertures permettant d'évacuer le gaz du volume de compression, lors d'une opération de déclenchement, lesdites ouvertures étant associées à des moyens (22, 22') permettant de les maintenir fermées entre le début de la compression du volume de compression (V2) et la fermeture du clapet (17) et de les ouvrir à la fermeture du clapet (17), lesdits moyens comprenant des tiges fixes (22, 22') coulissant dans lesdites ouvertures du piston (19), ces tiges comprenant des évidements ou échancrures ou rainures ou cannelures longitudinaux (22A) sur une portion de leur longueur, choisie pour que la partie évidée des tiges parvienne dans les ouvertures lorsque le clapet (17) se ferme.Gas insulated high voltage circuit breaker with arc blowing comprising a fixed main contact (3) and a fixed arcing contact (5- 5A) and a movable assembly comprising a main contact (3), an arcing contact (10), a compression volume (V2) cooperating with a fixed piston (19) and in connection with a blowing volume (V1) opening onto a blowing nozzle (14), said volume of compression being provided with a valve (17) preventing the passage of the gas from the blowing volume to the volume of compression, characterized in that the piston includes openings for discharging gas from the volume of compression, during a triggering operation, said openings being associated with means (22, 22 ') allowing keep them closed between the start of compression of the compression volume (V2) and closing of the valve (17) and to open them when the valve (17) closes, said means comprising fixed rods (22, 22 ') sliding in said piston openings (19), these rods comprising recesses or indentations or grooves or grooves longitudinal (22A) over a portion of their length, chosen so that the hollowed out part of the rods reaches the openings when the valve (17) closes. Disjoncteur selon la revendication 1, caractérisé en ce que les tiges (22) sont disposées de manière à se trouver pour leur plus grande partie à l'intérieur du volume de compression (V2) lorsque le disjoncteur est en position enclenchée.Circuit breaker according to claim 1, characterized in that the rods (22) are arranged so as to be for the most part inside the volume of compression (V2) when the circuit breaker is in position engaged. Disjoncteur selon la revendication 1, caractérisé en ce que les tiges (22') sont disposées de manière à se trouver pour leur plus grande partie à l'extérieur du volume de compression (V2) lorsque le disjoncteur est en position enclenchée.Circuit breaker according to claim 1, characterized in that the rods (22 ') are arranged so as to be for the most part outside the volume of compression (V2) when the circuit breaker is in position engaged. Disjoncteur selon la revendication 1, caractérisé en ce qu'un cylindre (7), portant les contacts mobiles d'arc (10), comprend des échancrures ou cannelures ou rainures ou évidements (7A), coopérant avec le piston (19) pour l'évacuation du gaz de compression en fin de compression.Circuit breaker according to claim 1, characterized in a cylinder (7) carrying the movable arcing contacts (10), includes notches or grooves or grooves or recesses (7A), cooperating with the piston (19) to the evacuation of the compression gas at the end of compression.
EP97401587A 1996-07-23 1997-07-03 High-voltage circuit breaker of self-blasting type Expired - Lifetime EP0821382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9609212 1996-07-23
FR9609212A FR2751782B1 (en) 1996-07-23 1996-07-23 HIGH VOLTAGE CIRCUIT BREAKER WITH SELF-BLOWING ARC

Publications (2)

Publication Number Publication Date
EP0821382A1 true EP0821382A1 (en) 1998-01-28
EP0821382B1 EP0821382B1 (en) 2001-11-14

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ID=9494345

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EP97401587A Expired - Lifetime EP0821382B1 (en) 1996-07-23 1997-07-03 High-voltage circuit breaker of self-blasting type

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US (1) US5808257A (en)
EP (1) EP0821382B1 (en)
CN (1) CN1063279C (en)
CA (1) CA2210371C (en)
DE (1) DE69708222T2 (en)
ES (1) ES2165003T3 (en)
FR (1) FR2751782B1 (en)
ID (1) ID17475A (en)

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EP2045827A1 (en) * 2007-10-03 2009-04-08 Areva T&D Sa Circuit breaker interruptor tube with double compression volume
CN113690093A (en) * 2021-08-25 2021-11-23 西安西电开关电气有限公司 Circuit breaker

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FR2769403B1 (en) * 1997-10-02 1999-11-12 Gec Alsthom T & D Sa COMPRESSED GAS SWITCH WITH RACK GEAR
DE19953560C1 (en) * 1999-11-03 2001-06-07 Siemens Ag Pressurized gas circuit breaker
JP3860553B2 (en) * 2002-11-19 2006-12-20 三菱電機株式会社 Gas insulated switchgear
EP1675144A1 (en) * 2004-12-23 2006-06-28 ABB Technology AG High voltage switch with arc resistant short circuit current conductor
DE102005019424A1 (en) * 2005-04-25 2006-11-02 Abb Technology Ag Circuit breaker for use in mean-voltage switchgear, has blowing cylinder with opening, whose inner diameter is equal to outer diameter of contact pin section, where insulating plastic material of cylinder is made of gas delivering material
JP4429205B2 (en) * 2005-05-16 2010-03-10 三菱電機株式会社 Gas insulation equipment
CN101000837B (en) * 2006-01-13 2010-06-09 河南平高电气股份有限公司 High voltage circuit breaker
WO2008023365A1 (en) * 2006-08-21 2008-02-28 Arcoline Ltd. Medium-voltage circuit-breaker
FR2906931B1 (en) * 2006-10-09 2009-07-17 Areva T & D Sa CUTTING CHAMBER WITH CYLINDER FIELD DISTRIBUTION FOR HIGH VOLTAGE OR MEDIUM VOLTAGE CIRCUIT BREAKERS
CN100449668C (en) * 2006-10-11 2009-01-07 王光顺 Breaking contactor with constant pressure blowoff of flames in use for breaker in extra high voltage
EP2198443B1 (en) * 2007-10-16 2011-02-02 ABB Research Ltd. Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve
KR101564990B1 (en) * 2009-08-17 2015-11-03 엘에스산전 주식회사 Gas insulation circuit breaker with a structure for decreasing friction
EP2579287B1 (en) * 2010-05-31 2014-07-02 Ormazabal Y Cia., S.L.U. Gas circuit breaker
US11380501B2 (en) * 2019-12-31 2022-07-05 Southern States Llc High voltage electric power switch with carbon arcing electrodes and carbon dioxide dielectric gas

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EP2045827A1 (en) * 2007-10-03 2009-04-08 Areva T&D Sa Circuit breaker interruptor tube with double compression volume
FR2922043A1 (en) * 2007-10-03 2009-04-10 Areva T & D Sa BREAKER BREAKER CHAMBER WITH DOUBLE VOLUME OF COMPRESSION
US8044318B2 (en) 2007-10-03 2011-10-25 Areva T&D Sa Interrupting chamber of a circuit-breaker having two compression volumes
CN113690093A (en) * 2021-08-25 2021-11-23 西安西电开关电气有限公司 Circuit breaker

Also Published As

Publication number Publication date
CA2210371C (en) 2000-04-04
FR2751782B1 (en) 1998-08-28
DE69708222T2 (en) 2002-06-27
DE69708222D1 (en) 2001-12-20
FR2751782A1 (en) 1998-01-30
EP0821382B1 (en) 2001-11-14
CN1175071A (en) 1998-03-04
ID17475A (en) 1998-01-08
ES2165003T3 (en) 2002-03-01
CA2210371A1 (en) 1998-01-23
CN1063279C (en) 2001-03-14
US5808257A (en) 1998-09-15

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