EP0667633A1 - Autopneumatic circuit breaker with pneumatically locked semi-mobile piston - Google Patents
Autopneumatic circuit breaker with pneumatically locked semi-mobile piston Download PDFInfo
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- EP0667633A1 EP0667633A1 EP95400111A EP95400111A EP0667633A1 EP 0667633 A1 EP0667633 A1 EP 0667633A1 EP 95400111 A EP95400111 A EP 95400111A EP 95400111 A EP95400111 A EP 95400111A EP 0667633 A1 EP0667633 A1 EP 0667633A1
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- European Patent Office
- Prior art keywords
- piston
- movable contact
- circuit breaker
- contact assembly
- tube
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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
- H01H33/905—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
Definitions
- the present invention relates to a pneumatically locked semi-movable piston self-blowing circuit breaker.
- Document EP-0475270 discloses a circuit breaker of the self-blowing type, comprising a casing filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, at least one forming part of a contact assembly movable integral with an operating member and adapted to be moved axially in the envelope between a closed position and an open position, the movable contact assembly consisting of a first tube and a second tube coaxial with the first tube to define, on either side of a first ring connecting the first and the second tubes, a blowing chamber and a compression chamber communicating with the blowing chamber and closed by a semi-mobile piston.
- the gas in the compression chamber is compressed because the distance between the piston and the ring separating the compression chamber from the blowing chamber decreases.
- the dielectric gas is compressed during the entire movement of the movable contact assembly between the closed position and the open position. Moving the movable contact assembly requires a certain amount of energy. The amount of energy required is greater the greater the gas in the compression chamber is compressed during the entire stroke of the movable contact assembly.
- the object of the invention is to reduce the energy consumption of the circuit breaker during an opening operation.
- first means are provided for immobilizing the piston during a first part of the movement of the movable contact assembly between the closed position and the open position and second means for axially moving the piston with the movable contact assembly during a second part of this same movement of the movable contact assembly, these means comprising a pneumatic means cooperating with mechanical means.
- the extinction of the arc occurring between the arcing contacts during an opening operation is effected by means of compression of the gas in the compression chamber.
- the extinction of the arc obtained by a flow of gas coming from the compression chamber takes place before the movement of the movable contact assembly has ended. Therefore, it is not necessary to compress the gas in the compression chamber during the entire movement of the movable contact assembly. From the moment the piston moves with the movable contact assembly, the amount of energy required to operate the movable contact assembly is very reduced because there is no more gas compression .
- a pneumatic means is provided in order to cooperate with the mechanical means which can thus be lightened and of reduced effort. This is important since the forces of these mechanical means are transmitted in the kinematics of the device and are generally collected by the operating member, generally a connecting rod, and by levers cooperating with the latter.
- the second mechanical means for axially displacing the piston comprise a drive member integral with the movable contact assembly which drives a stop element linked to the piston during the second part of the displacement of the assembly. movable contact, this stop element being disposed on the path of the drive member.
- the first mechanical means for immobilizing the piston include a spring disposed between a fixed element and an end wall of the piston and a fixed retaining member cooperating with a stop wall of the piston.
- the pneumatic means is a means for depressurizing the space between the fixed retaining member and the abutment wall, this space being sealed.
- the pneumatic means consists of an annular element provided with at least one orifice and disposed between the end wall and the abutment wall itself provided with at least one orifice, this annular element being urged by at least one compression spring disposed between this annular element and the end wall, against the abutment wall, the orifice of which it sealingly closes.
- the abutment element connected to the piston is said annular element, the compression spring of the pneumatic means being compressed during the drive of this element by the drive member.
- the pneumatic means which operates under vacuum during the first part of the movement of the movable assembly between the closed position and the open position, cooperates in the stationary maintenance of the piston and thus allows the use of a very weak spring.
- the force transmitted by this spring is also lower and there is no need to strengthen and weigh down the mobile assembly with its operating member.
- a breaking chamber will be described, it being understood that a high voltage circuit breaker, may comprise, for each phase, several breaking chambers of the type which will be described.
- FIGS. 1 to 3 the same references designate identical elements.
- the reference 1 designates a preferably insulating envelope, for example of porcelain, filled with a gas with good dielectric properties, for example sulfur hexafluoride under a pressure of a few bars.
- the circuit breaker includes a fixed assembly and a movable contact assembly.
- the fixed assembly comprises an arcing contact 3, consisting of a metal tube, the end 3A of which is made of a material resistant to the effects of the arcing, for example an alloy based on tungsten.
- the fixed assembly also includes a fixed permanent contact 4 consisting of fingers protected by a corona hood 5. The arcing contact and the fixed permanent contact are electrically connected to a first socket, not shown.
- the movable contact assembly comprises an operating part 6 passing through the chamber in a sealed manner and connected to a mechanism not shown.
- a metal assembly comprising two coaxial tubes 7 and 8, the tube 8 having a diameter larger than the tube 7.
- the two tubes 7, 8 are connected together by a metal ring 9. These tubes and this crown are preferably made in one piece from machining.
- the tube 7 constitutes the movable arcing contact. Its end 7A is made of a material resistant to the effects of the arc and cooperates with the contact 3, 3A.
- the tube 8 has one end 8A carrying a blowing nozzle 10 made of insulating material.
- the tubular portion 8A constitutes the permanent movable contact of the circuit breaker and cooperates, when the circuit breaker is in the engaged position (closed position) with the fingers 4 as shown in FIG. 1.
- the end 8A of the tube 8, the blowing nozzle 10, the tube 7 and the crown 9 define a blowing chamber 17.
- the crown 9, the tubes 7 and 8 and a piston 11 define a compression chamber 18 separated from the blowing chamber 17 by the crown 9.
- the piston slides axially between the tubes 7 and 8 in a sealed manner.
- the piston 11 is connected to a tube 12 coaxial with the tubes 7 and 8.
- the end of the tube 12 is connected to a ring 20 forming a stop wall.
- the abutment wall 20 cooperates with a ring 14A connected to a fixed tube 14 coaxial with the tube 12, the ring 14A forming an end of travel stop member for the tube 12 during a closing operation.
- the tube 14 is electrically connected to a second outlet not shown by means of a fixed element 21 also annular.
- the tube 14 also supports a permanent contact formed by fingers 16 in electrical contact with the tube 8.
- One or more drive members 7B integral with the tube 7 and extending radially with respect to the latter in the direction of the tube 8 are engaged between the tube 7 and the tube 12.
- One or more springs 15 are arranged between the fixed part 21 and an end wall 22 of the piston 11.
- the piston 11 is equipped with a unidirectional valve 11A allowing a circulation of gas from the interior of the chamber delimited by the casing 1 towards the compression chamber 18.
- a unidirectional valve 9A allowing gas circulation from the compression chamber 18 to the blowing chamber 17.
- the first mechanical means for immobilizing the piston 11 during a first part of the movement of the movable contact assembly between the closed position and the open position therefore comprise the spring 15 disposed between the fixed element 21 and the wall of end 22 of the piston 11 and the fixed retaining member 14A cooperating with the abutment wall 20 of the piston 11.
- the second mechanical means for axially moving the piston 11 with the movable contact assembly during a second part of this same displacement of the movable contact assembly comprise the drive member 7B secured to the movable contact assembly which drives a stop element 23 linked to the piston 11 during the second part of the movement of the movable contact assembly, this stop element being disposed on the path of the member.
- This stop element 23 connected to the piston 11 is an annular element which will be specified below.
- a pneumatic means cooperates with these mechanical means.
- This pneumatic means consists of the annular element 23 provided with at least one orifice 24 and disposed between the end wall 22 of the piston 11 and the abutment wall 20 of the piston 11 itself provided with at least one orifice .
- This annular element 23 is biased by at least one compression spring 26 disposed between this annular element 23 and the end wall 22, against the abutment wall 20, the orifice 25 of which it sealingly closes by means of a washer. rubber 27 inserted into the annular element 23.
- the compression spring 26 of the pneumatic means is compressed during the drive of the annular element 23 by the drive member 7B.
- Sliding seals 31, 32 are provided to seal the vacuum chamber 28 visible in FIG. 3.
- the circuit breaker works as follows.
- the circuit breaker is in the closed position.
- the spring pushes the semi-movable piston 11 through its end wall 22, its abutment wall 20 being pressed against the annular fixed abutment member 14A.
- the compression chamber 18 is then of maximum volume.
- the compression spring 26 pushes the annular element 23 against the abutment wall 20 closing its orifice 25.
- the pneumatic means then acts by vacuum as a means for holding the piston 11 against the stop member 14A whose action is added to that of the spring 15 which can thus be chosen of reduced size.
- the operating member 6 is moved to the right of the Figure 1, moving the first tube 7 and the second tube 8.
- the volume of the compression chamber 18 is reduced, the piston remains stationary, and the arc is blown by passing the gas contained in this chamber 18 by the valve 9A.
- the drive member 7B moves freely along the tube 12. This first part of movement takes place up to the position shown in FIG. 2.
- the volume of the compression chamber 18 is substantially zero and the drive member 7B abuts against the annular element 23.
- the dimensioning of the compression chamber 18, of the tube 12 and of the tube 14 as well as the positioning of the drive member 7B are chosen so that this volume of the compression chamber is substantially zero at this time.
- the movements are carried out exactly in the opposite direction, the gas passing from the suction chamber 28 into the space 30 and filling the compression chamber 18 through the valve 11A.
- the drive member 7B pushes the front face of the piston over a relatively small distance. 11 thanks to the abutment part 11B ensuring the placing of the abutment wall 20 against the fixed retaining member 14A and the resetting of the pneumatic vacuum means.
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- Circuit Breakers (AREA)
- Percussive Tools And Related Accessories (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Massaging Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Keying Circuit Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
La présente invention concerne un disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement.The present invention relates to a pneumatically locked semi-movable piston self-blowing circuit breaker.
On connaît du document EP-0475270 un disjoncteur du type à auto-soufflage, comprenant une enveloppe remplie d'un gaz diélectrique sous pression, deux contacts d'arc coopérant entre eux, l'un au moins faisant partie d'un ensemble de contact mobile solidaire d'un organe de manoeuvre et adapté pour être déplacé axialement dans l'enveloppe entre une position de fermeture et une position d'ouverture, l'ensemble de contact mobile étant constitué par un premier tube et un second tube coaxial au premier tube pour délimiter, de part et d'autre d'une première couronne reliant le premier et le second tubes, une chambre de soufflage et une chambre de compression communiquant avec la chambre de soufflage et fermée par un piston semi-mobile.Document EP-0475270 discloses a circuit breaker of the self-blowing type, comprising a casing filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, at least one forming part of a contact assembly movable integral with an operating member and adapted to be moved axially in the envelope between a closed position and an open position, the movable contact assembly consisting of a first tube and a second tube coaxial with the first tube to define, on either side of a first ring connecting the first and the second tubes, a blowing chamber and a compression chamber communicating with the blowing chamber and closed by a semi-mobile piston.
Pendant une opération d'ouverture, le gaz dans la chambre de compression est comprimé du fait que la distance entre le piston et la couronne séparant la chambre de compression de la chambre de soufflage décroît. Dans ce disjoncteur connu, le gaz diélectrique est comprimé pendant tout le déplacement de l'ensemble de contact mobile entre la position de fermeture et la position d'ouverture. Le déplacement de l'ensemble de contact mobile requiert une certaine quantité d'énergie. La quantité d'énergie nécessaire est d'autant plus grande que le gaz dans la chambre de compression est comprimé pendant toute la course de l'ensemble de contact mobile.During an opening operation, the gas in the compression chamber is compressed because the distance between the piston and the ring separating the compression chamber from the blowing chamber decreases. In this known circuit breaker, the dielectric gas is compressed during the entire movement of the movable contact assembly between the closed position and the open position. Moving the movable contact assembly requires a certain amount of energy. The amount of energy required is greater the greater the gas in the compression chamber is compressed during the entire stroke of the movable contact assembly.
Le but de l'invention est de réduire la consommation d'énergie du disjoncteur pendant une opération d'ouverture.The object of the invention is to reduce the energy consumption of the circuit breaker during an opening operation.
Pour ce faire, conformément à l'invention, sont prévus des premiers moyens pour immobiliser le piston pendant une première partie du déplacement de l'ensemble de contact mobile entre la position de fermeture et la position d'ouverture et des seconds moyens pour déplacer axialement le piston avec l'ensemble de contact mobile pendant une seconde partie de ce même déplacement de l'ensemble de contact mobile , ces moyens comportant un moyen pneumatique coopérant avec des moyens mécaniques.To do this, in accordance with the invention, first means are provided for immobilizing the piston during a first part of the movement of the movable contact assembly between the closed position and the open position and second means for axially moving the piston with the movable contact assembly during a second part of this same movement of the movable contact assembly, these means comprising a pneumatic means cooperating with mechanical means.
Dans le cas de faibles courants à couper, l'extinction de l'arc se produisant entre les contacts d'arc pendant une opération d'ouverture, se fait à l'aide d'une compression du gaz dans la chambre de compression. Or l'extinction de l'arc obtenue par un flux de gaz provenant de la chambre de compression s'opère avant la fin du déplacement de l'ensemble de contact mobile. Par conséquent, il n'est pas nécessaire de comprimer le gaz dans la chambre de compression pendant tout le déplacement de l'ensemble de contact mobile. A partir de l'instant où le piston se déplace avec l'ensemble de contact mobile, la quantité d'énergie nécessaire pour manoeuvrer l'ensemble de contact mobile est très réduite du fait qu'il n'y a plus de compression de gaz.In the case of low currents to be cut, the extinction of the arc occurring between the arcing contacts during an opening operation is effected by means of compression of the gas in the compression chamber. However, the extinction of the arc obtained by a flow of gas coming from the compression chamber takes place before the movement of the movable contact assembly has ended. Therefore, it is not necessary to compress the gas in the compression chamber during the entire movement of the movable contact assembly. From the moment the piston moves with the movable contact assembly, the amount of energy required to operate the movable contact assembly is very reduced because there is no more gas compression .
Par ailleurs, un moyen pneumatique est prévu afin de coopérer avec les moyens mécaniques qui peuvent ainsi être alléger et d'effort réduit. Ceci est important puisque les efforts de ces moyens mécaniques se transmettent dans la cinématique de l'appareil et sont en général encaissés par l'organe de manoeuvre, en général une bielle, et par des leviers coopérant avec cette dernière.Furthermore, a pneumatic means is provided in order to cooperate with the mechanical means which can thus be lightened and of reduced effort. This is important since the forces of these mechanical means are transmitted in the kinematics of the device and are generally collected by the operating member, generally a connecting rod, and by levers cooperating with the latter.
Selon un mode de réalisation préféré, les seconds moyens mécaniques pour déplacer axialement le piston comprennent un organe d'entraînement solidaire de l'ensemble de contact mobile qui entraîne un élément de butée lié au piston pendant la seconde partie du déplacement de l'ensemble de contact mobile, cet élément de butée étant disposé sur le trajet de l'organe d'entraînement.According to a preferred embodiment, the second mechanical means for axially displacing the piston comprise a drive member integral with the movable contact assembly which drives a stop element linked to the piston during the second part of the displacement of the assembly. movable contact, this stop element being disposed on the path of the drive member.
Les premiers moyens mécaniques pour immobiliser le piston comprennent un ressort disposé entre un élément fixe et une paroi d'extrémité du piston et un organe de retenue fixe coopérant avec une paroi de butée du piston.The first mechanical means for immobilizing the piston include a spring disposed between a fixed element and an end wall of the piston and a fixed retaining member cooperating with a stop wall of the piston.
Le moyen pneumatique est un moyen de mise en dépression de l'espace compris entre l'organe de retenue fixe et la paroi de butée, cet espace étant rendu étanche.The pneumatic means is a means for depressurizing the space between the fixed retaining member and the abutment wall, this space being sealed.
De préférence, le moyen pneumatique est constitué d'un élément annulaire pourvu d'au moins un orifice et disposé entre la paroi d'extrémité et la paroi de butée elle-même pourvue d'au moins un orifice, cet élément annulaire étant sollicité par au moins un ressort de compression disposé entre cet élément annulaire et la paroi d'extrémité, contre la paroi de butée dont il ferme de façon étanche l'orifice.Preferably, the pneumatic means consists of an annular element provided with at least one orifice and disposed between the end wall and the abutment wall itself provided with at least one orifice, this annular element being urged by at least one compression spring disposed between this annular element and the end wall, against the abutment wall, the orifice of which it sealingly closes.
L'élément de butée relié au piston est ledit élément annulaire, le ressort de compression du moyen pneumatique étant comprimé lors de l'entraînement de cet élément par l'organe d'entraînement.The abutment element connected to the piston is said annular element, the compression spring of the pneumatic means being compressed during the drive of this element by the drive member.
Le moyen pneumatique qui fonctionne en dépression durant la première partie du déplacement de l'ensemble mobile entre la position de fermeture et la position d'ouverture, coopère au maintien immobile du piston et permet ainsi d'utiliser un ressort très faible. Ainsi l'effort transmis par ce ressort est également plus faible et il n'est pas nécessaire de renforcer et d'alourdir l'ensemble mobile avec son organe de manoeuvre.The pneumatic means which operates under vacuum during the first part of the movement of the movable assembly between the closed position and the open position, cooperates in the stationary maintenance of the piston and thus allows the use of a very weak spring. Thus the force transmitted by this spring is also lower and there is no need to strengthen and weigh down the mobile assembly with its operating member.
L'invention est exposée ci-après plus en détail à l'aide de dessins ne représentant qu'un mode de réalisation préféré de l'invention.The invention is set out below in more detail with the aid of drawings representing only a preferred embodiment of the invention.
Les figures sont des vues en coupe longitudinale d'une disjoncteur conforme à l'invention et plus précisément
- la figure 1 est une vue en position de fermeture,
- la figure 2 est une vue en position de fin de compression et
- la figure 3 est une vue en position d'ouverture.
- FIG. 1 is a view in the closed position,
- FIG. 2 is a view in the end of compression position and
- Figure 3 is a view in the open position.
Dans ce qui suit, on décrira une chambre de coupure, étant entendu qu'un disjoncteur à haute tension, peut comporter, pour chaque phase, plusieurs chambres de coupure du type qui va être décrit. Sur les figures 1 à 3, les mêmes références désignent des éléments identiques.In what follows, a breaking chamber will be described, it being understood that a high voltage circuit breaker, may comprise, for each phase, several breaking chambers of the type which will be described. In FIGS. 1 to 3, the same references designate identical elements.
Sur les figures, la référence 1 désigne une enveloppe de préférence isolante, par exemple en porcelaine, remplie d'un gaz à bonnes propriétés diélectriques, par exemple de l'hexafluorure de soufre sous une pression de quelques bars.In the figures, the reference 1 designates a preferably insulating envelope, for example of porcelain, filled with a gas with good dielectric properties, for example sulfur hexafluoride under a pressure of a few bars.
Le disjoncteur comprend un ensemble fixe et un ensemble de contact mobile.The circuit breaker includes a fixed assembly and a movable contact assembly.
L'ensemble fixe comprend un contact d'arc 3, constitué d'un tube métallique dont l'extrémité 3A est réalisée en un matériau résistant aux effets de l'arc, par exemple un alliage à base de tungstène. L'ensemble fixe comprend également un contact permanent fixe 4 constitué de doigts protégés par un capot pare-effluves 5. Le contact d'arc et le contact permanent fixe sont reliés électriquement à une première prise de courant, non représentée.The fixed assembly comprises an arcing
L'ensemble de contact mobile comprend une pièce de manoeuvre 6 traversant la chambre de manière étanche et reliée à un mécanisme non représenté. A la pièce 6 est relié un ensemble métallique comprenant deux tubes 7 et 8 coaxiaux, le tube 8 ayant un diamètre plus grand que le tube 7. Les deux tubes 7, 8 sont reliés entre eux par une couronne métallique 9. Ces tubes et cette couronne sont de préférence réalisés en une seule pièce venue d'usinage.The movable contact assembly comprises an
Le tube 7 constitue le contact d'arc mobile. Son extrémité 7A est réalisée en un matériau résistant aux effets de l'arc et coopère avec le contact 3, 3A. Le tube 8 possède une extrémité 8A portant une buse de soufflage 10 en matériau isolant. La portion tubulaire 8A constitue le contact mobile permanent du disjoncteur et coopère, lorsque le disjoncteur est en position enclenchée (position de fermeture) avec les doigts 4 comme le montre la figure 1.The
L'extrémité 8A du tube 8, la buse de soufflage 10, le tube 7 et la couronne 9 délimitent une chambre de soufflage 17. La couronne 9, les tubes 7 et 8 et un piston 11 délimitent une chambre de compression 18 séparée de la chambre de soufflage 17 par la couronne 9. Le piston coulisse axialement entre les tubes 7 et 8 de façon étanche. Le piston 11 est relié à un tube 12 coaxial aux tubes 7 et 8. L'extrémité du tube 12 est reliée à une couronne 20 formant une paroi de butée. La paroi de butée 20 coopère avec une couronne 14A reliée à un tube 14 fixe coaxial au tube 12, la couronne 14A formant un organe de butée de fin de course du tube 12 pendant une manoeuvre de fermeture. Le tube 14 est relié électriquement à une seconde prise de courant non représentée par l'intermédiaire d'un élément fixe 21 également annulaire. Le tube 14 supporte par ailleurs un contact permanent formé de doigts 16 en contact électrique avec le tube 8.The
Un ou plusieurs organes d'entraînement 7B solidaires du tube 7 et s'étendant radialement par rapport à celui-ci en direction du tube 8 sont engagés entre le tube 7 et le tube 12.One or more drive
Un ou plusieurs ressorts 15 sont disposés entre la partie fixe 21 et une paroi d'extrémité 22 du piston 11.One or
Le piston 11 est équipé d'un clapet unidirectionnel 11A permettant une circulation de gaz de l'intérieur de la chambre délimité par l'enveloppe 1 vers la chambre de compression 18. La couronne 9 quant à elle est équipée d'un clapet unidirectionnel 9A permettant une circulation de gaz de la chambre de compression 18 vers la chambre de soufflage 17.The
Les premiers moyens mécaniques pour immobiliser le piston 11 pendant une première partie du déplacement de l'ensemble de contact mobile entre la position de fermeture et la position d'ouverture comprennent donc le ressort 15 disposé entre l'élément fixe 21 et la paroi d'extrémité 22 du piston 11 et l'organe de retenue fixe 14A coopérant avec la paroi de butée 20 du piston 11.The first mechanical means for immobilizing the
Les seconds moyens mécaniques pour déplacer axialement le piston 11 avec l'ensemble de contact mobile pendant une seconde partie de ce même déplacement de l'ensemble de contact mobile comprennent l'organe d'entraînement 7B solidaire de l'ensemble de contact mobile qui entraîne un élément de butée 23 lié au piston 11 pendant la seconde partie du déplacement de l'ensemble de contact mobile, cet élément de butée étant disposé sur le trajet de l'organe. Cet élément de butée 23 relié au piston 11 est un élément annulaire qui sera précisé plus loin.The second mechanical means for axially moving the
Un moyen pneumatique coopère avec ces moyens mécaniques. Ce moyen pneumatique est constitué de l'élément annulaire 23 pourvu d'au moins un orifice 24 et disposé entre la paroi d'extrémité 22 du piston 11 et la paroi de butée 20 du piston 11 elle-même pourvue d'au moins un orifice. Cet élément annulaire 23 est sollicité par au moins un ressort de compression 26 disposé entre cet élément annulaire 23 et la paroi d'extrémité 22, contre la paroi de butée 20 dont il ferme de façon étanche l'orifice 25 grâce à une rondelle de préférence en caoutchouc 27 insérée dans l'élément annulaire 23. Le ressort de compression 26 du moyen pneumatique est comprimé lors de l'entraînement de l'élément annulaire 23 par l'organe d'entraînement 7B. Des joints d'étanchéité coulissants 31, 32 sont prévus pour rendre étanche la chambre de dépression 28 visible sur la figure 3.A pneumatic means cooperates with these mechanical means. This pneumatic means consists of the
Le fonctionnement du disjoncteur est le suivant.The circuit breaker works as follows.
Sur la figure 1, le disjoncteur est en position de fermeture. Le ressort pousse le piston 11 semi-mobile par sa paroi d'extrémité 22, sa paroi de butée 20 étant plaquée contre l'organe annulaire de butée fixe 14A. La chambre de compression 18 est alors de volume maximal. Le ressort de compression 26 pousse l'élément annulaire 23 contre la paroi de butée 20 fermant son orifice 25. L'espace rempli de gaz entre cet élément annulaire 23 et l'organe de butée fixe 14A étant très faible, le moyen pneumatique agit alors par dépression comme un moyen de maintien du piston 11 contre l'organe de butée 14A dont l'action s'ajoute à celle du ressort 15 qui peut ainsi être choisi de dimension réduite.In Figure 1, the circuit breaker is in the closed position. The spring pushes the
Durant la première partie de déplacement d'ouverture, l'organe de manoeuvre 6 est déplacé vers la droite de la figure 1, déplaçant le premier tube 7 et le second tube 8. Le volume de la chambre de compression 18 est diminué, le piston restant immobile, et le soufflage de l'arc s'effectue par passage du gaz contenu dans cette chambre 18 par le clapet 9A. L'organe d'entraînement 7B se déplace librement le long du tube 12. Cette première partie de déplacement s'effectue jusqu'à la position représentée sur la figure 2.During the first part of the opening movement, the operating
Dans cette position de la figure 2, le volume de la chambre de compression 18 est sensiblement nul et l'organe d'entraînement 7B vient buter contre l'élément annulaire 23. Avantageusement, le dimensionnement de la chambre de compression 18, du tube 12 et du tube 14 ainsi que le positionnement de l'organe d'entraînement 7B sont choisis afin que ce volume de la chambre de compression soit sensiblement nul à ce moment. Eventuellement, il peut être réalisé en choisissant d'autres dimensions un volume de chambre de compression "mort" non nul.In this position of FIG. 2, the volume of the
Lorsqu'il vient en butée contre l'élément annulaire 23, l'organe d'entraînement 7B le pousse à l'encontre de l'effort du ressort de compression 26 et ainsi libère les orifices 24 et 25. Le gaz peut donc pénétrer dans la chambre d'aspiration 28 supprimant l'effort de retenue du à la dépression. La seconde partie du déplacement de l'ensemble de contact mobile commence et le piston 11 est déplacé avec l'ensemble mobile. Durant cette seconde partie du déplacement de l'ensemble de contact mobile, la compression du gaz dans la chambre de compression 18 est interrompue et l'énergie nécessaire à l'actionnement du tube de manoeuvre 6 est donc réduite. L'on atteint ainsi la position d'ouverture représentée sur la figure 3.When it abuts against the
Pour la refermeture du disjoncteur, les déplacements s'effectuent exactement dans le sens inverse, le gaz repassant de la chambre d'aspiration 28 dans l'espace 30 et remplissant la chambre de compression 18 en passant par le clapet 11A. De plus, l'organe d'entraînement 7B pousse sur une relativement petite distance la face frontale du piston 11 grâce à la partie de butée 11B assurant le placage de la paroi de butée 20 contre l'organe de retenue fixe 14A et la remise en action du moyen pneumatique à dépression.To close the circuit breaker, the movements are carried out exactly in the opposite direction, the gas passing from the
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9400762 | 1994-01-25 | ||
FR9400762A FR2715499B1 (en) | 1994-01-25 | 1994-01-25 | Self-blowing circuit breaker with pneumatically locked piston. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0667633A1 true EP0667633A1 (en) | 1995-08-16 |
EP0667633B1 EP0667633B1 (en) | 1999-10-06 |
Family
ID=9459356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95400111A Expired - Lifetime EP0667633B1 (en) | 1994-01-25 | 1995-01-19 | Autopneumatic circuit breaker with pneumatically locked semi-mobile piston |
Country Status (11)
Country | Link |
---|---|
US (1) | US5567923A (en) |
EP (1) | EP0667633B1 (en) |
CN (1) | CN1071483C (en) |
AT (1) | ATE185446T1 (en) |
AU (1) | AU687947B2 (en) |
BR (1) | BR9500295A (en) |
DE (1) | DE69512541T2 (en) |
ES (1) | ES2136810T3 (en) |
FR (1) | FR2715499B1 (en) |
PL (1) | PL175980B1 (en) |
ZA (1) | ZA95550B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2753564A1 (en) * | 1996-09-17 | 1998-03-20 | Gec Alsthom T & D Sa | Reduced compression self extinction method for high voltage circuit breakers |
FR2761520A1 (en) * | 1997-03-27 | 1998-10-02 | Gec Alsthom T & D Sa | Self-extinguishing mechanism for circuit breakers |
FR2767221A1 (en) * | 1997-08-11 | 1999-02-12 | Gec Alsthom T & D Sa | SELF-BLOWING AND REDUCED COMPRESSION CIRCUIT BREAKER |
CN109416997A (en) * | 2016-06-27 | 2019-03-01 | Abb瑞士股份有限公司 | Middle piezoelectricity way switch or medium voltage breaker |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2753834B1 (en) * | 1996-09-23 | 1998-12-04 | HIGH VOLTAGE CIRCUIT BREAKER WITH SHOCK ABSORBER | |
DE10353497A1 (en) † | 2003-11-11 | 2005-06-09 | Siemens Ag | switching device |
CN100416724C (en) * | 2006-06-05 | 2008-09-03 | 西安交通大学 | Low-voltage arc quenching system based on wall erosion to improve pneumatic repellent force and break performance |
FR2997222B1 (en) | 2012-10-19 | 2015-01-16 | Alstom Technology Ltd | DEVICE FOR ESTABLISHING AND / OR CUTTING CURRENT WITH PERMANENT CONTACTS WITH REDUCED WEAR |
CN113690093B (en) * | 2021-08-25 | 2023-01-24 | 西安西电开关电气有限公司 | Circuit breaker |
CN114628189B (en) * | 2021-12-23 | 2024-05-24 | 国网浙江省电力有限公司 | Compressed air type arc extinguishing chamber and breaker |
Citations (5)
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CH471456A (en) * | 1967-04-13 | 1969-04-15 | Magrini Fab Riun Scarpa | Self-blowing electrical gas pressure switch which has at least one switching or extinguishing chamber |
EP0126929A2 (en) * | 1983-05-31 | 1984-12-05 | BBC Brown Boveri AG | Pressurised-gas switch |
EP0359224A1 (en) * | 1988-09-16 | 1990-03-21 | Gec Alsthom Sa | High-tension circuit breaker using a dielectric gas for blasting |
DE3930548A1 (en) * | 1989-09-13 | 1991-03-21 | Licentia Gmbh | Circuit breaker with automatic light atrc quenching - has compression plunger held by force-dependent releasable, stationary arrester |
EP0475270A2 (en) * | 1990-09-11 | 1992-03-18 | Asea Brown Boveri Ab | High-voltage circuit breaker of self-blasting type |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3987262A (en) * | 1975-05-12 | 1976-10-19 | Westinghouse Electric Corporation | Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure |
CH590552A5 (en) * | 1975-09-26 | 1977-08-15 | Sprecher & Schuh Ag |
-
1994
- 1994-01-25 FR FR9400762A patent/FR2715499B1/en not_active Expired - Fee Related
-
1995
- 1995-01-11 US US08/371,394 patent/US5567923A/en not_active Expired - Fee Related
- 1995-01-19 AT AT95400111T patent/ATE185446T1/en not_active IP Right Cessation
- 1995-01-19 ES ES95400111T patent/ES2136810T3/en not_active Expired - Lifetime
- 1995-01-19 DE DE69512541T patent/DE69512541T2/en not_active Expired - Fee Related
- 1995-01-19 EP EP95400111A patent/EP0667633B1/en not_active Expired - Lifetime
- 1995-01-23 AU AU11330/95A patent/AU687947B2/en not_active Ceased
- 1995-01-24 PL PL95306939A patent/PL175980B1/en unknown
- 1995-01-24 ZA ZA95550A patent/ZA95550B/en unknown
- 1995-01-24 CN CN95101358A patent/CN1071483C/en not_active Expired - Fee Related
- 1995-01-24 BR BR9500295A patent/BR9500295A/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH471456A (en) * | 1967-04-13 | 1969-04-15 | Magrini Fab Riun Scarpa | Self-blowing electrical gas pressure switch which has at least one switching or extinguishing chamber |
EP0126929A2 (en) * | 1983-05-31 | 1984-12-05 | BBC Brown Boveri AG | Pressurised-gas switch |
EP0359224A1 (en) * | 1988-09-16 | 1990-03-21 | Gec Alsthom Sa | High-tension circuit breaker using a dielectric gas for blasting |
DE3930548A1 (en) * | 1989-09-13 | 1991-03-21 | Licentia Gmbh | Circuit breaker with automatic light atrc quenching - has compression plunger held by force-dependent releasable, stationary arrester |
EP0475270A2 (en) * | 1990-09-11 | 1992-03-18 | Asea Brown Boveri Ab | High-voltage circuit breaker of self-blasting type |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2753564A1 (en) * | 1996-09-17 | 1998-03-20 | Gec Alsthom T & D Sa | Reduced compression self extinction method for high voltage circuit breakers |
FR2761520A1 (en) * | 1997-03-27 | 1998-10-02 | Gec Alsthom T & D Sa | Self-extinguishing mechanism for circuit breakers |
FR2767221A1 (en) * | 1997-08-11 | 1999-02-12 | Gec Alsthom T & D Sa | SELF-BLOWING AND REDUCED COMPRESSION CIRCUIT BREAKER |
EP0897185A1 (en) * | 1997-08-11 | 1999-02-17 | Gec Alsthom T Et D Sa | Gas-blast circuit breaker with reduced compression |
US6018133A (en) * | 1997-08-11 | 2000-01-25 | Gec Alsthom T & D Sa | Low-compression puffer circuit-breaker |
CN109416997A (en) * | 2016-06-27 | 2019-03-01 | Abb瑞士股份有限公司 | Middle piezoelectricity way switch or medium voltage breaker |
CN109416997B (en) * | 2016-06-27 | 2020-03-31 | Abb瑞士股份有限公司 | Medium-voltage circuit switch or medium-voltage circuit breaker |
US10714274B2 (en) | 2016-06-27 | 2020-07-14 | Abb Schweiz Ag | Medium voltage circuit switch or breaker |
Also Published As
Publication number | Publication date |
---|---|
DE69512541T2 (en) | 2000-05-04 |
PL306939A1 (en) | 1995-08-07 |
ATE185446T1 (en) | 1999-10-15 |
DE69512541D1 (en) | 1999-11-11 |
AU687947B2 (en) | 1998-03-05 |
PL175980B1 (en) | 1999-03-31 |
FR2715499B1 (en) | 1996-03-15 |
EP0667633B1 (en) | 1999-10-06 |
US5567923A (en) | 1996-10-22 |
ES2136810T3 (en) | 1999-12-01 |
ZA95550B (en) | 1995-11-14 |
FR2715499A1 (en) | 1995-07-28 |
AU1133095A (en) | 1995-08-03 |
CN1111031A (en) | 1995-11-01 |
BR9500295A (en) | 1995-10-17 |
CN1071483C (en) | 2001-09-19 |
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