FR2755293A1 - Semi-mobile piston mechanism for auto-extinguishing gas filled circuit breaker - Google Patents
Semi-mobile piston mechanism for auto-extinguishing gas filled circuit breaker Download PDFInfo
- Publication number
- FR2755293A1 FR2755293A1 FR9613119A FR9613119A FR2755293A1 FR 2755293 A1 FR2755293 A1 FR 2755293A1 FR 9613119 A FR9613119 A FR 9613119A FR 9613119 A FR9613119 A FR 9613119A FR 2755293 A1 FR2755293 A1 FR 2755293A1
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- Prior art keywords
- tube
- crown
- piston
- circuit breaker
- light
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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
- H01H33/905—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 the compression volume being formed by a movable cylinder and a semi-mobile piston
-
- 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
-
- 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
- H01H33/904—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 characterised by the transmission between operating mechanism and piston or movable contact
Landscapes
- Circuit Breakers (AREA)
Abstract
Description
DISJONCTEUR A PISTON SEMI-MOBILE ET A HAUT POUVOIR DE
COUPURE DE COURANTS CAPACITIFS.SEMI-MOBILE PISTON CIRCUIT BREAKER WITH HIGH POWER
CUT OF CAPACITIVE CURRENTS.
La présente invention se rapporte à un disjoncteur à piston semi-mobile et à haut pouvoir de coupure de courants capacitifs. The present invention relates to a semi-mobile piston circuit breaker and with a high capacity for breaking capacitive currents.
Elle concerne plus précisément un disjoncteur du type à auto-soufflage, comprenant une enveloppe isolante remplie d'un gaz diélectrique sous pression, deux contacts d'arc coopérant entre eux, l'un étant constitué d'une tige fermée et l'autre faisant partie d'un ensemble de contact mobile solidaire d'un organe de manoeuvre et adapté pour être déplacé axialement dans l'enveloppe lors d'une manoeuvre d'ouverture entre une position de fermeture et une position d'ouverture, l'ensemble de contact mobile étant constitué par un premier tube portant à son extrémité le contact d'arc mobile et un second tube coaxial au premier tube pour délimiter, de part et d'autre d'une couronne reliant le premier et le second tubes, une chambre d'expansion à volume constant fermée par une buse de soufflage et une chambre de compression communiquant avec la chambre d'expansion par un clapet unidirectionnel et fermée par un piston destiné à la compression du gaz dans cette chambre, le premier tube étant fermé frontalement à une certaine distance de la couronne du côté de celle-ci opposé aux contacts d'arc et au moins une lumière étant réalisée dans le premier tube, disposée du côté de la couronne opposé aux contacts d'arc. More specifically, it relates to a circuit breaker of the self-blowing type, comprising an insulating envelope filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, one consisting of a closed rod and the other forming part of a movable contact assembly secured to an operating member and adapted to be moved axially in the envelope during an opening operation between a closed position and an open position, the contact assembly mobile being constituted by a first tube carrying at its end the movable arcing contact and a second tube coaxial with the first tube to delimit, on either side of a ring connecting the first and the second tubes, a chamber of constant volume expansion closed by a blowing nozzle and a compression chamber communicating with the expansion chamber by a unidirectional valve and closed by a piston intended for the compression of the gas in this chamber, the first ier tube being closed frontally at a certain distance from the crown on the side of the latter opposite to the arcing contacts and at least one light being produced in the first tube, arranged on the side of the crown opposite to the arcing contacts.
Un tel disjoncteur est décrit dans le document de brevet français 2 720 188 déposé le 19 mai 1994 par la
Déposante. Selon ce document, le piston est fixe et la lumière est conçue pour former un moyen d'évacuation du gaz contenu dans la chambre de compression hors de celle-ci, une fois une course x de l'ensemble de contact mobile par rapport au piston fixe terminée. Le but de ce disjoncteur est en effet de ne réaliser une compression du gaz que sur cette course x, bien inférieure à la course totale. Such a circuit breaker is described in French patent document 2,720,188 filed on May 19, 1994 by the
Depositive. According to this document, the piston is fixed and the light is designed to form a means of evacuating the gas contained in the compression chamber out of it, once a stroke x of the movable contact assembly relative to the piston fixed finished. The purpose of this circuit breaker is indeed to achieve compression of the gas only on this stroke x, much less than the total stroke.
Un tel disjoncteur permet la coupure des faibles courants par autocompression et la coupure des courants forts par expansion thermique du volume de gaz comprimé. Such a circuit breaker makes it possible to cut low currents by self-compression and to cut high currents by thermal expansion of the volume of compressed gas.
Cependant dans ce dernier cas, il s'avère que du gaz chaud tend à s'introduire par cette lumière dans la chambre de compression après la coupure du courant et à entraîner une refermeture inopinée du disjoncteur.However, in the latter case, it turns out that hot gas tends to be introduced by this light into the compression chamber after the power cut and to cause an unexpected reclosing of the circuit breaker.
Par ailleurs, il est connu de réaliser dans les disjoncteurs à auto-soufflage un piston semi-mobile déplacé lors d'une manoeuvre d'ouverture durant la compression dans le sens opposé au sens de déplacement de l'ensemble de contact mobile, afin d'augmenter la pression de soufflage. Furthermore, it is known to produce in self-blowing circuit breakers a semi-movable piston displaced during an opening operation during compression in the direction opposite to the direction of movement of the movable contact assembly, in order to '' increase the blowing pressure.
Le but de l'invention est d'augmenter les performances de tels disjoncteurs en coupure de courants capacitifs. Dans ce cas, la vitesse d'ouverture nécessaire pour la coupure capacitive sans réamorçage est donnée par la loi approchée
V = K1 Un / Pa ou K2 Un / a où
a est compris entre 0.7 et 1,
V est la vitesse d'ouverture,
Un la tension assignée,
P la pression de gaz et
X la densité de gaz.The object of the invention is to increase the performance of such circuit breakers in breaking of capacitive currents. In this case, the opening speed required for capacitive breaking without re-priming is given by the approximate law
V = K1 Un / Pa or K2 Un / a where
a is between 0.7 and 1,
V is the opening speed,
One the rated voltage,
P the gas pressure and
X the density of gas.
L'invention permet de limiter la vitesse d'ouverture nécessaire raisonnablement, en augmentant la pression ou la densité du gaz au voisinage des contacts du disjoncteur, tout en supprimant tout risque de refermeture inopinée du disjoncteur. The invention makes it possible to limit the opening speed required reasonably, by increasing the pressure or the density of the gas in the vicinity of the contacts of the circuit breaker, while eliminating any risk of unexpected reclosing of the circuit breaker.
Pour ce faire, conformément à l'invention,
- le piston est un piston semi-mobile déplacé durant la compression lors d'une manoeuvre d'ouverture dans le sens opposé au sens de déplacement de l'ensemble de contact mobile,
- ladite lumière est située par rapport au piston du côté opposé aux contacts,
- un moyen de fermeture de ladite lumière est prévu, conçu de façon à venir fermer cette lumière dès l'ouverture dudit clapet porté par la couronne en début de compression et
- le premier tube est pourvu d'au moins un orifice de passage de la chambre d'expansion vers l'intérieur du premier tube.To do this, according to the invention,
the piston is a semi-mobile piston moved during compression during an opening operation in the opposite direction to the direction of movement of the mobile contact assembly,
- said light is located relative to the piston on the side opposite the contacts,
a means for closing said light is provided, designed so as to close this light as soon as said valve carried by the crown is opened at the start of compression, and
- The first tube is provided with at least one orifice for passage of the expansion chamber towards the interior of the first tube.
Selon un mode de réalisation préféré, ledit clapet unidirectionnel coulisse librement sur une pièce solidaire du premier tube lors de la compression jusqu'à une butée disposée à une distance 1 de la couronne. According to a preferred embodiment, said one-way valve slides freely on a part integral with the first tube during compression to a stop disposed at a distance 1 from the crown.
Avantageusement, ledit moyen de fermeture est constitué d'une bague solidaire du clapet et coulissant librement sur le premier tube, ce moyen fermant complètement la lumière lorsque le clapet a effectué la course 1. Advantageously, said closing means consists of a ring integral with the valve and sliding freely on the first tube, this means completely closing the light when the valve has completed stroke 1.
Selon un mode constructif préféré, le clapet et la bague sont reliés par au moins une tige, traversant le piston et la couronne. According to a preferred construction method, the valve and the ring are connected by at least one rod, passing through the piston and the crown.
Avantageusement, la paroi de fermeture frontale e du premier tube est située au droit de la lumière, du côté opposé au contacts. Advantageously, the front closing wall e of the first tube is located in line with the lumen, on the side opposite the contacts.
De préférence, l'orifice de passage de la chambre d'expansion vers l'intérieur du premier tube est agencé dans ladite pièce à proximité de ladite couronne. Preferably, the orifice for the passage of the expansion chamber towards the interior of the first tube is arranged in said part near said crown.
L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant qu'un mode de réalisation préféré de l'invention. The invention is described below in more detail using figures showing only a preferred embodiment of the invention.
Les figures 1 à 3 sont des vues en coupe longitudinale d'un disjoncteur conforme à l'invention, en position de fermeture, en position de fin de compression et en position d'ouverture. Figures 1 to 3 are views in longitudinal section of a circuit breaker according to the invention, in the closed position, in the end of compression position and in the open position.
Le disjoncteur représenté sur les figures 1 à 3 comprend, de façon classique, une enveloppe isolante 1 remplie d'un gaz diélectrique sous pression, deux contacts d'arc 3A ,7A coopérant entre eux, l'un 7A au moins faisant partie d'un ensemble de contact mobile solidaire d'un organe de manoeuvre 20 et adapté pour être déplacé axialement dans l'enveloppe 1 entre une position de fermeture et une position d'ouverture, l'ensemble de contact mobile étant constitué par un premier tube 7 portant à son extrémité le contact d'arc mobile 7A et un second tube 8 coaxial au premier tube 7 pour délimiter, de part et d'autre d'une couronne 9 reliant le premier et le second tubes, une chambre d'expansion 17 à volume constant fermée par une buse de soufflage 10 et une chambre de compression 18 communiquant par l'intermédiaire d'un clapet unidirectionnel 2 avec la chambre d'expansion et fermée par un piston 11. The circuit breaker shown in Figures 1 to 3 comprises, conventionally, an insulating jacket 1 filled with a dielectric gas under pressure, two arcing contacts 3A, 7A cooperating with each other, at least one 7A being part of a movable contact assembly secured to an operating member 20 and adapted to be moved axially in the casing 1 between a closed position and an open position, the movable contact assembly being constituted by a first tube 7 carrying at its end the movable arcing contact 7A and a second tube 8 coaxial with the first tube 7 to delimit, on either side of a ring 9 connecting the first and the second tubes, an expansion chamber 17 at volume constant closed by a blowing nozzle 10 and a compression chamber 18 communicating via a one-way valve 2 with the expansion chamber and closed by a piston 11.
Le contact fixe 3A est constitué d'une tige fermée et le contact mobile 7A est constitué d'une couronne de doigts venant enserrer le contact fixe 3A en position de fermeture. The fixed contact 3A consists of a closed rod and the movable contact 7A consists of a ring of fingers enclosing the fixed contact 3A in the closed position.
Le premier tube 7 est fermé frontalement par une paroi 5 disposée à une certaine distance dl de la couronne 9 du côté de celle-ci opposé aux contacts d'arc et au moins une lumière 4 est réalisée dans le premier tube 7, disposé du côté de la couronne 9 opposé aux contacts d'arc. The first tube 7 is closed frontally by a wall 5 arranged at a certain distance dl from the crown 9 on the side of the latter opposite the arcing contacts and at least one light 4 is produced in the first tube 7, arranged on the side of the crown 9 opposite the arcing contacts.
Le piston 11 est un piston semi-mobile déplacé durant la compression lors d'une manoeuvre d'ouverture dans le sens opposé au sens de déplacement de l'ensemble de contact mobile grâce à l'organe de manoeuvre 20 connu en soi qui peut actionner par exemple un ensemble mécanique de biellettes. Selon le mode de réalisation représenté, cet ensemble de biellettes comporte une première biellette 10 articulée à l'une de ses extrémités 10A sur le piston 11 et à l'autre de ses extrémité 10B à l'extrémité d'une deuxième biellette 12 et à l'extrémité d'une troisième biellette 12'. The piston 11 is a semi-mobile piston moved during compression during an opening operation in the direction opposite to the direction of movement of the movable contact assembly thanks to the operating member 20 known per se which can actuate for example a mechanical assembly of rods. According to the embodiment shown, this set of links comprises a first link 10 articulated at one of its ends 10A on the piston 11 and at the other of its ends 10B at the end of a second link 12 and at the end of a third link 12 '.
La deuxième biellette 12 est par ailleurs articulée à son autre extrémité 12A sur le premier tube 7 de l'ensemble de contact mobile. La troisième biellette 12' est quant à elle articulée à son autre extrémité 12A' à une pièce fixe 6. Ces biellettes 10, 12, 12' sont agencées et dimensionnées pour réaliser, dans un premier temps, les déplacements dans des sens opposés de l'ensemble de contact mobile et du piston 11 et donc la compression du gaz par réduction du volume de la chambre de compression 18 et, dans un second temps, après dépassement d'un point mort correspondant à la fin de la compression, les déplacement simultanés dans le même sens de l'ensemble de contact mobile et du piston 11 et donc la fin de la manoeuvre d'ouverture du disjoncteur.The second link 12 is also articulated at its other end 12A on the first tube 7 of the movable contact assembly. The third link 12 ′ is articulated at its other end 12A ′ to a fixed part 6. These links 10, 12, 12 ′ are arranged and sized to carry out, in a first step, displacements in opposite directions of the mobile contact assembly and piston 11 and therefore compression of the gas by reducing the volume of the compression chamber 18 and, in a second step, after passing a neutral point corresponding to the end of compression, the simultaneous displacements in the same direction of the movable contact assembly and the piston 11 and therefore the end of the opening operation of the circuit breaker.
La lumière 4 est située par rapport au piston 11 du côté opposé aux contacts 3A, 7A, c'est-à-dire à l'arrière du piston 11. Un moyen de fermeture 13 de la lumière 4 est prévu, conçu de façon à venir fermer cette lumière 4 dès l'ouverture du clapet 2 porté par la couronne 9 en début de compression. The light 4 is located relative to the piston 11 on the side opposite the contacts 3A, 7A, that is to say at the rear of the piston 11. A means 13 for closing the light 4 is provided, designed so as to come close this light 4 upon opening of the valve 2 carried by the crown 9 at the start of compression.
Le premier tube 7 est pourvu d'au moins un orifice 15A de passage de la chambre d'expansion 17 vers l'intérieur du premier tube. De préférence, plusieurs orifices 15A sont prévus répartis sur la périphérie du premier tube 7. The first tube 7 is provided with at least one orifice 15A for passage of the expansion chamber 17 towards the interior of the first tube. Preferably, several orifices 15A are provided distributed over the periphery of the first tube 7.
Pour ce faire, avantageusement, le clapet unidirectionnel 2 est constitué d'une pièce en forme de rondelle dont une partie ferme au moins un orifice 14 pratiqué dans la couronne 9, quand le clapet 2 est en position fermée appliqué sur cette couronne 9, et dont une autre partie coulisse librement sur une pièce 15 solidaire du premier tube 7 lors de la compression jusqu'à une butée 16 portée par la pièce 15 et disposée à une distance 1 de la couronne 9. To do this, advantageously, the unidirectional valve 2 consists of a piece in the form of a washer, part of which closes at least one orifice 14 formed in the crown 9, when the valve 2 is in the closed position applied to this crown 9, and another part of which slides freely on a part 15 integral with the first tube 7 during compression to a stop 16 carried by the part 15 and disposed at a distance 1 from the crown 9.
La pièce 15 est pourvue des orifices 15A de passage de la chambre d'expansion 17 vers le volume intérieur V du premier tube 7. Ces orifices 15A sont avantageusement disposés à proximité de la couronne 9. The part 15 is provided with the orifices 15A for passage from the expansion chamber 17 towards the internal volume V of the first tube 7. These orifices 15A are advantageously arranged near the crown 9.
Le moyen de fermeture 13, quant à lui, est constitué d'une bague solidaire du clapet 2 et coulissant librement sur le premier tube 7, ce moyen 15 fermant complètement la lumière 4 lorsque le clapet 2 a effectué la course 1. Plus précisément, le clapet 2 et la bague 13 sont reliés par au moins une tige 19, traversant le piston 11 et la couronne 9. The closing means 13, meanwhile, consists of a ring integral with the valve 2 and sliding freely on the first tube 7, this means 15 completely closing the light 4 when the valve 2 has run the stroke 1. More precisely, the valve 2 and the ring 13 are connected by at least one rod 19, passing through the piston 11 and the crown 9.
Pour des raisons mécaniques de guidage, de préférence trois tiges 19 sont disposées réparties autour du premier tube 7. For mechanical guiding reasons, preferably three rods 19 are arranged distributed around the first tube 7.
La paroi 5 de fermeture frontale du premier tube est située au droit de la lumière 4, du côté opposé au contacts 3A, 7A. The front closure wall 5 of the first tube is located to the right of the lumen 4, on the side opposite to the contacts 3A, 7A.
Lors d'une opération d'ouverture, le disjoncteur fonctionne donc de la manière suivante. During an opening operation, the circuit breaker therefore operates as follows.
En position de fermeture telle que représentée sur le figure 1, les contacts 3A et 7A sont fermés, c'est-à-dire que la tige de contact fixe 3A est complètement introduite dans la couronne de doigts 7A de contact mobile. Le piston 11 est à sa position la plus en arrière et le clapet 2 est en position fermée, c'est-à-dire qu'il est appliqué sur l'orifice 14, les pressions étant équilibrées dans la chambre d'expansion 17 et dans la chambre de compression 18. In the closed position as shown in FIG. 1, the contacts 3A and 7A are closed, that is to say that the fixed contact rod 3A is completely inserted into the ring of fingers 7A of movable contact. The piston 11 is in its rearmost position and the valve 2 is in the closed position, that is to say that it is applied to the orifice 14, the pressures being balanced in the expansion chamber 17 and in the compression chamber 18.
La bague 13 est située à l'arrière de la lumière 4, celle-ci étant donc ouverte.The ring 13 is located at the rear of the light 4, the latter therefore being open.
Lors de la phase de compression, c'est-à-dire lors du premier temps de déplacement dans des sens opposés du piston 11 et de l'ensemble de contact mobile grâce au système de biellettes comme vu plus haut, le volume de la chambre de compression 18 diminue entraînant une augmentation de pression et très rapidement l'ouverture du clapet 2 qui vient en butée contre la butée 16 et entraîne grâce à la tige 19 la bague 13 qui vient fermer la lumière 4. La pression augmente donc dans la chambre d'expansion 17 et grâce aux orifices 15A dans le volume intérieur V du premier tube 7 fermé par la bague 13 et, dès la fin de la compression comme représenté sur la figure 2, elle y est maximale. Les contacts se séparent à ce moment, libérant l'entrée du tube 7. La surpression de gaz obtenue dans la chambre d'expansion 17 et à l'intérieur du premier tube 7 permet d'obtenir le but précisé plus haut d'augmentation des performances en coupure de courants capacitifs. During the compression phase, that is to say during the first time of displacement in opposite directions of the piston 11 and of the movable contact assembly thanks to the system of links as seen above, the volume of the chamber compression 18 decreases resulting in an increase in pressure and very quickly the opening of the valve 2 which abuts against the stop 16 and causes, thanks to the rod 19, the ring 13 which closes the light 4. The pressure therefore increases in the chamber expansion 17 and thanks to the orifices 15A in the internal volume V of the first tube 7 closed by the ring 13 and, as soon as the compression has ended as shown in FIG. 2, it is maximum there. The contacts separate at this time, freeing the entry of the tube 7. The gas overpressure obtained in the expansion chamber 17 and inside the first tube 7 makes it possible to obtain the purpose specified above of increasing the Capacitive current cut performance.
L'opération d'ouverture se termine ensuite comme représenté sur la figure 3, le piston 11 et l'ensemble de contact mobile se déplaçant tous deux vers l'arrière. Le clapet 2 se referme obturant la chambre d'expansion 17 et entraînant la bague 13 qui libère la lumière 4. L'arc se forme entre les contacts 3A et 7A et est soufflé d'une part par le gaz de la chambre d'expansion 17 s'évacuant vers l'extérieur de la buse 10 et d'autre part par le gaz de la chambre d'expansion 17 s'écoulant vers l'intérieur du premier tube 7. Le gaz contenu à l'intérieur du premier tube 7 s'évacue par la lumière 4. The opening operation then ends as shown in Figure 3, the piston 11 and the movable contact assembly both moving rearward. The valve 2 closes closing the expansion chamber 17 and driving the ring 13 which releases the light 4. The arc is formed between the contacts 3A and 7A and is blown on the one hand by the gas from the expansion chamber 17 evacuating towards the outside of the nozzle 10 and on the other hand by the gas from the expansion chamber 17 flowing towards the inside of the first tube 7. The gas contained inside the first tube 7 is evacuated by light 4.
L'invention est particulièrement adaptée aux disjoncteurs haute tension, afin de supprimer la nécessité d'une grande distance entre les contacts et une vitesse d'ouverture élevée. The invention is particularly suitable for high voltage circuit breakers, in order to eliminate the need for a large distance between the contacts and a high opening speed.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9613119A FR2755293B1 (en) | 1996-10-28 | 1996-10-28 | SEMI-MOBILE PISTON CIRCUIT BREAKER WITH HIGH CAPACITIVE CURRENT BREAKING POWER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9613119A FR2755293B1 (en) | 1996-10-28 | 1996-10-28 | SEMI-MOBILE PISTON CIRCUIT BREAKER WITH HIGH CAPACITIVE CURRENT BREAKING POWER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2755293A1 true FR2755293A1 (en) | 1998-04-30 |
| FR2755293B1 FR2755293B1 (en) | 1998-11-27 |
Family
ID=9497092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9613119A Expired - Fee Related FR2755293B1 (en) | 1996-10-28 | 1996-10-28 | SEMI-MOBILE PISTON CIRCUIT BREAKER WITH HIGH CAPACITIVE CURRENT BREAKING POWER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2755293B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000052721A1 (en) * | 1999-03-01 | 2000-09-08 | Alstom | Double movement high voltage circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034121A (en) * | 1978-10-23 | 1980-05-29 | Westinghouse Electric Corp | Double-flow puffertype compressed-gas circuit-interrupter |
| EP0456139A2 (en) * | 1990-05-11 | 1991-11-13 | Licentia Patent-Verwaltungs-GmbH | Compression switch |
| EP0554686A1 (en) * | 1992-02-06 | 1993-08-11 | GEC Alsthom T&D AG | Gas blast switch |
| EP0684622A1 (en) * | 1994-05-19 | 1995-11-29 | Gec Alsthom T Et D Sa | Circuit breaker with reduced self compression |
-
1996
- 1996-10-28 FR FR9613119A patent/FR2755293B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034121A (en) * | 1978-10-23 | 1980-05-29 | Westinghouse Electric Corp | Double-flow puffertype compressed-gas circuit-interrupter |
| EP0456139A2 (en) * | 1990-05-11 | 1991-11-13 | Licentia Patent-Verwaltungs-GmbH | Compression switch |
| EP0554686A1 (en) * | 1992-02-06 | 1993-08-11 | GEC Alsthom T&D AG | Gas blast switch |
| EP0684622A1 (en) * | 1994-05-19 | 1995-11-29 | Gec Alsthom T Et D Sa | Circuit breaker with reduced self compression |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000052721A1 (en) * | 1999-03-01 | 2000-09-08 | Alstom | Double movement high voltage circuit breaker |
| FR2790592A1 (en) * | 1999-03-01 | 2000-09-08 | Alstom | HIGH VOLTAGE CIRCUIT BREAKER WITH DOUBLE MOTION |
| US6342685B1 (en) | 1999-03-01 | 2002-01-29 | Alstom | Double movement high voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2755293B1 (en) | 1998-11-27 |
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| ST | Notification of lapse |