EP2465127A1 - Cutoff chamber for medium- or high-voltage circuit breaker with reduced controlling power - Google Patents
Cutoff chamber for medium- or high-voltage circuit breaker with reduced controlling powerInfo
- Publication number
- EP2465127A1 EP2465127A1 EP10739374A EP10739374A EP2465127A1 EP 2465127 A1 EP2465127 A1 EP 2465127A1 EP 10739374 A EP10739374 A EP 10739374A EP 10739374 A EP10739374 A EP 10739374A EP 2465127 A1 EP2465127 A1 EP 2465127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- contact
- arc
- volume
- piston
- 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.)
- Withdrawn
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
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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
- H01H2033/907—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 tandem pistons, e.g. several compression volumes being modified in conjunction or sequential
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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
- 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 invention relates to a breaking chamber for use in a medium or high voltage circuit breaker typically in the range of 7.2 kV to 800 kV.
- the design must be provided so that the opening and closing maneuvers of the three-pole circuit breaker can be performed only by means of actuation of a spring latching mechanism control which is located outside the interrupting chambers.
- patent FR 2 435 118 discloses a solution which consists in integrating a coil spring 20 inside the interrupting chamber, which is compressed during a closing operation by the external control and whose function is to compress the gas arc blowing present in a blowing volume during an opening maneuver.
- the coil spring 20 bearing against the blow piston 15 formed integrally and around an arc contact 18 is compressed during the closing maneuver by the other arc contact 21 connected to the control.
- the coil spring 20 expands and thus compresses the gas present in the blast volume 30.
- the pressure in this volume 30 is further increased by the heating of the gases. from the arc energy 25.
- Patent EP 0 441 292 discloses a solution similar to the previous one and which furthermore consists, according to the short-circuit operation illustrated in FIGS. 3 and 4, of producing a double blow-out flow from the volumes V1 and V4 in parallel towards the contact d 4A and through the nozzle 16.
- the volume Vl increases during the breaking of high currents and consequently the overpressure generated for the cut is reduced.
- Another disadvantage is that the two arcing contacts 4A, 7A may repel each other when breaking short-circuit currents. high circuit if the force of the spring 13 is not sufficient.
- the blows in parallel from each other respectively volumes V1, V4 tend to be mutually disrupted. In other words, this solution can not be applied for high short-circuit currents (> 25kA).
- WO 2006/066420 discloses another solution which consists in cooling the arc which occurs between the arcing contacts 4 and 5 by blowing gas generated from the volume 24, as shown schematically in FIG. 1 of this patent.
- the increase in pressure in the volume 24 is achieved by the compressed gas from the volume 27 through the channel 29 and simultaneously by the heating of the gases caused by the energy of the arc.
- volume 27 is arranged on an outer diameter of the volume 24. This outer diameter is wide and tends to increase the diameter of the insulators 3, 3c.
- blowing piston 28 and the arc contact 4 must be moved by the same mechanism by means of a complex linkage because of the different races to be performed for each moving part and that the linkage must have completed compression in the volume 27 when the arc is established between the arc contacts 4 and 5.
- the breaking chamber according to this document GB 1570035 is not adapted to the performance required for recent high-voltage circuit breakers from 7.2 kV to 800 kV. Indeed, in the disclosed breaking chamber 1 'heating blowing gases occurs by generating, prior to the cutting of the final arc 28, an initial arc 27 within the same blowing volume 6, 26. This leads to a significant deterioration of the dielectric properties of the gas contained in this volume 6, 26 and therefore implies an unsuitability for recent high-voltage circuit breakers.
- the object of the invention is thus to provide a breaking chamber for high or medium voltage circuit breakers typically in the range of 7.2 kV to 800 kV which does not have the disadvantages of the prior art and which requires a low energy maneuver , especially in case of high short-circuit current failure (> 63kA).
- the object of the invention is a current breaking chamber for a medium or high voltage circuit breaker extending along a longitudinal axis and comprising: a pair of arcing contacts, one of which is fixed and the other is movable along the longitudinal axis (XX ') under the action of a maneuvering rod to separate from one another during a power failure ; the travel in translation of the movable contact being sufficiently high to achieve the power failure whatever value and to obtain the dielectric strength of the circuit breaker,
- a blowing chamber whose volume V2 is fixed and which opens inside the blowing nozzle to bring the blowing gas to the arc formed between the contacts during a cut,
- a compression chamber substantially arranged behind the blowing chamber parallel to the longitudinal axis, and whose volume Vl varies and opens into the blowing chamber under the action of a piston
- blowing chamber opens into the blast nozzle through a blast channel for supplying the blast gas to the area outside the blast chamber where the single arc formed between the arc contacts occurs during a blast. cut.
- the invention therefore consists essentially in combination with:
- the energy required for the compression of the gas is thus minimized because of the proximity of the spring to the compression volume, obtaining a simple way of moving the piston and the movable arcing contact with their respective necessary strokes, the stroke of the movable arcing contact being equal to the compression stroke of the piston plus an additional stroke to obtain a sufficient distance between the arcing contacts in the open position (high enough to achieve the power failure regardless of value and to obtain the dielectric strength of the circuit breaker),
- circuit breaker external control command that provides just the energy needed to close the contacts and to maneuver the movable arcing contact when opening.
- the breaking chamber according to the invention is perfectly suited to the performance required in modern high-voltage circuit breakers, typically from 7.2kV to 80OkV.
- the breaking chamber according to the invention has:
- a blow-molding chamber with a standard shape such as that used in modern high-voltage circuit breakers, and which opens with a small diameter channel on the zone where the arc occurs,
- the breaking chamber according to the invention has:
- the temporary mechanical connection means are arranged outside the blow and compression chambers with respect to the longitudinal axis.
- An advantageous variant of the temporary mechanical connection means consists of a tube fixed to the piston and of diameter substantially equal to the permanent contact itself fixed to the moving arcing contact, said tube being in abutment against the end of the contact mobile permanent until complete compression of the volume Vl.
- the temporary mechanical connection means are arranged inside the blow and compression chambers with respect to the longitudinal axis.
- the fixed arc contact has a generally tubular shape, the temporary mechanical connection means being arranged inside the fixed arc tube.
- This variant is advantageous because it makes it possible to obtain a more compact chamber with respect to a chamber according to the other variant with the temporary connection means consisting of a tube of substantially equal to the permanent contact.
- the temporary mechanical connection means comprise a tube fixed to the piston and of smaller diameter than the fixed contact, said tube being in abutment against the end of the movable arc contact until the complete compression of the volume Vl.
- the invention relates to a high or medium voltage circuit breaker, comprising, for a pole, one or more breaking chambers described above.
- FIGS. 1 to 4 show a first embodiment of a breaking chamber according to the invention for longitudinal sectional view and in different positions from the closure of the contacts to the extreme opening of the contacts and the cut made,
- FIG. 5 is a cross-sectional view of the interrupting chamber according to FIGS. 1 to 4,
- FIG. 6 and 7 show a second embodiment of a breaking chamber according to the invention for longitudinal section and respectively in the closed position of the contacts and the extreme opening of the contacts and the cut made.
- the current interrupting chamber 1 for a medium or high voltage circuit breaker extends along a longitudinal axis (XX ') and firstly comprises an insulating envelope 10 and a pair of permanent contacts 2, 3 of which one is fixed 3 and the other 2 is movable along the longitudinal axis (XX ') under the action of a not shown operating rod.
- It also comprises a pair of arcing contacts 4, 5 of which one is fixed and secured.
- the permanent fixed contact 3 and the other 5 is movable along the longitudinal axis (XX ') and integral with the permanent movable contact 2.
- the arc contacts 4, 5 are provided to separate each other during a power failure .
- the travel in translation of the movable contact 5 is sufficiently high to achieve the power failure regardless of value and to obtain the dielectric strength of the circuit breaker.
- a blowing chamber 7 delimited by a fixed part 70 and the arc-blowing nozzle 6 defines a fixed volume V2 and which opens inside the blast nozzle 6 by a blowing duct 700 of reduced diameter to bring the blowing gas in the zone Z outside the chamber I 1 where the arc formed between the arcing contacts occurs during a break.
- a compression chamber 8 defines a volume Vl that varies and opens into the blowing chamber 7 under the action of a piston 9.
- the compression chambers 8 and blowing 7 are substantially arranged one behind the other parallel to the longitudinal axis XX '.
- a helical spring 11 is fixed at one of its ends 110 directly to the piston and at the other of its ends 111 to a fixed part 12.
- the interrupting chamber 1 further comprises temporary mechanical connection means 13 between the piston 9 and the movable arcing contact 4 to compress the spring 11 against the piston during a closing operation of the contacts 4, 5 and to obtain a stroke of the movable arcing contact 5 greater than the stroke of the spring 11 which performs the complete compression of the volume Vl. Furthermore, the complete compression of the gas in the Volume Vl is approximately made as soon as the arcing contacts 4, 5 are separated (FIG. 2).
- the first embodiment provides that the spring 11 is compressed by temporary connection means arranged outside the rooms of the chamber ( Figures 1, 2, 3, 4 and 5). As illustrated, these means 13 consist of a tube 130 fixed to the piston 9 by pins 131.
- the second embodiment provides that the spring 11 is compressed by temporary connection means arranged inside the chamber 1.
- these means 13 consist of a tube 132 attached to the piston 9 and of smaller diameter than the fixed contact 4, said tube 132 being in abutment against the end of the movable arc contact 5 until the complete compression of the volume Vl.
- the spring 11 pushes the piston 9 and the tube 130 which is bound (towards the right in Figure 2), the part integrating the arc contact 5 and permanent 2 is also pushed and at the same time moved in translation by the not shown actuating rod.
- the dimensioning is such that the tube 130 and the part 2, 5 remain in contact C until the position in FIG. 2 is reached.
- the permanent contact 2 is separated from the permanent contact 3 in this position.
- the gas is compressed in V1
- the overpressure opens the valve 15 between the volumes V1 and V2, so that the volume V2 is precompressed and before the energy of the arc has heated the gas in V2.
- the arc contact 4 remains fixed while the arc contact 5 is moved by the not shown operating rod ( Figures 3 and 4).
- the arc is stretched, the energy of the arc heats the gas in the volume V2 and increases the pressure in this volume V2.
- the overpressure in the chamber 7 produces a blow through the blast channel 700 which cools the arc in the zone Z outside the chamber 7 and consequently, the arc is interrupted.
- the spring 11 is compressed when the piston 9 is pushed to the left by the moving arc contact 5 via the insulating tube 132.
- FIG. 7 shows the breaking chamber 1 according to the second embodiment, in the fully open position.
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a novel cutoff chamber (1) with reduced controlling power.
Description
CHAMBRE DE COUPURE POUR DISJONCTEUR A MOYENNE OU HAUTE TENSION A ENERGIE DE MANŒUVRE REDUITE BREAKER CHAMBER FOR A MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER WITH REDUCED HANDLING ENERGY
DESCRIPTION DOMAINE TECHNIQUE DESCRIPTION TECHNICAL FIELD
L' invention concerne une chambre de coupure destinée à être utilisée dans un disjoncteur à moyenne ou haute tension typiquement dans la gamme de 7.2 kV à 800 kV. The invention relates to a breaking chamber for use in a medium or high voltage circuit breaker typically in the range of 7.2 kV to 800 kV.
Une application particulière intéressante est l'utilisation dans un disjoncteur d'alternateur. An interesting particular application is the use in an alternator circuit breaker.
ART ANTÉRIEUR PRIOR ART
Dans cette application particulière dans laquelle il est nécessaire de pouvoir couper un courant de court-circuit élevé, typiquement de 63 kA voire plus, la conception doit être prévue de sorte que les manœuvres d'ouverture et de fermeture du disjoncteur à trois pôles puissent être réalisées uniquement au moyen de l' actionnement d'une commande à mécanisme à accrochage de ressort qui est implantée à l'extérieur des chambres de coupure. In this particular application in which it is necessary to be able to cut a high short circuit current, typically 63 kA or more, the design must be provided so that the opening and closing maneuvers of the three-pole circuit breaker can be performed only by means of actuation of a spring latching mechanism control which is located outside the interrupting chambers.
Or, la masse et les dimensions (volumes) nécessaires aux pièces traversées par le courant de court-circuit augmentent avec la valeur de ce dernier. However, the mass and dimensions (volumes) required for the parts through which the short-circuit current increases with the value of the latter.
L'énergie de manoeuvre nécessaire à leurs déplacements pour couper le courant de court-circuit augmente en conséquence jusqu'au point où il n'est plus possible d'utiliser des commandes à mécanisme à faible
énergie avec accrochage de ressort extérieur aux chambres de coupure qui soient standards. The maneuvering energy required to move them to cut off the short-circuit current accordingly increases to the point where it is no longer possible to use low-speed controls energy with external spring coupling to the cutoff chambers that are standard.
Pour résoudre cette problématique, différentes solutions alternatives à un surdimensionnement des commandes extérieures ont été proposées . To solve this problem, various alternative solutions to an oversizing of the external controls have been proposed.
Ainsi, le brevet FR 2 435 118 décrit une solution qui consiste à intégrer un ressort hélicoïdal 20 à l'intérieur de la chambre de coupure, qui est comprimé durant une manoeuvre de fermeture par la commande extérieure et dont la fonction est de comprimer le gaz de soufflage d' arc présent dans un volume de soufflage pendant une manoeuvre d'ouverture. En se référant au mode de réalisation des figures 5 et 6 de ce brevet, le ressort hélicoïdal 20 en appui contre le piston de soufflage 15 formé intégralement et autour d'un contact d'arc 18 est comprimé durant la manœuvre de fermeture par l'autre contact d'arc 21 relié à la commande. Lors d'une manœuvre d'ouverture le ressort hélicoïdal 20 se détend et comprime ainsi le gaz présent dans le volume de soufflage 30. Lors de la coupure de courant élevés, la pression dans ce volume 30 est encore augmentée par l' échauffement des gaz à partir de l'énergie d'arc 25. Thus, patent FR 2 435 118 discloses a solution which consists in integrating a coil spring 20 inside the interrupting chamber, which is compressed during a closing operation by the external control and whose function is to compress the gas arc blowing present in a blowing volume during an opening maneuver. Referring to the embodiment of Figures 5 and 6 of this patent, the coil spring 20 bearing against the blow piston 15 formed integrally and around an arc contact 18 is compressed during the closing maneuver by the other arc contact 21 connected to the control. During an opening maneuver the coil spring 20 expands and thus compresses the gas present in the blast volume 30. During the high current cut, the pressure in this volume 30 is further increased by the heating of the gases. from the arc energy 25.
L'inconvénient principal de cette solution est que le piston 15 est poussé en sens inverse (vers la gauche sur les figures 5 et 6) lorsque la pression est augmentée par l'énergie d'arc. Le volume de soufflage 30 est alors augmenté, ce qui tend à abaisser la pression du gaz de soufflage lors de la coupure. Un
autre inconvénient est que le soufflage d' arc est limité au soufflage unique à travers la buse 27b. The main disadvantage of this solution is that the piston 15 is pushed in the opposite direction (to the left in FIGS. 5 and 6) when the pressure is increased by the arc energy. The blowing volume 30 is then increased, which tends to lower the pressure of the blowing gas during the cut. A Another disadvantage is that the arc blow is limited to single blow through the nozzle 27b.
Ce même brevet FR 2 435 118 propose dans son mode de réalisation des figures 36 et 37 des moyens qui en théorie sont susceptibles de pallier l'inconvénient principal : ces moyens consistent en des loquets 43 agencés en bordure du volume de soufflage 30 et actionnés par des ressorts à lame 44 qui sont prévus pour venir se loger dans des gorges 45 ménagées dans le piston 15 et ainsi le bloquer en translation dans la position de détente du ressort 20 ayant comprimé le gaz. En pratique, il s'avère que ces moyens mécanique 43, 44, 45 de blocage en translation du piston ne peuvent être efficaces dans des chambres de coupure à auto soufflage récentes dans lesquelles les variations de pression sont trop élevées (jusqu'à 60 bars et plus). En d'autres termes, les moyens mécaniques de blocage en translation 43, 44, 45 ne peuvent bloquer réellement le piston 15 lors d'une coupure de courants de court-circuit élevés. This same patent FR 2 435 118 proposes in its embodiment of FIGS. 36 and 37 means which in theory are able to overcome the main drawback: these means consist of latches 43 arranged at the edge of the blast volume 30 and actuated by leaf springs 44 which are provided to be housed in grooves 45 formed in the piston 15 and thus lock in translation in the detent position of the spring 20 having compressed the gas. In practice, it turns out that these mechanical means 43, 44, 45 for locking in translation of the piston can not be effective in recent blow-off chambers in which the pressure variations are too high (up to 60 bar and more). In other words, the mechanical translation locking means 43, 44, 45 can not actually block the piston 15 when breaking high short circuit currents.
Le brevet EP 0 441 292 divulgue une solution similaire à la précédente et qui consiste en outre selon le fonctionnement en court-circuit illustré aux figures 3 et 4 à réaliser un double flux de soufflage depuis les volumes Vl et V4 en parallèle vers le contact d'arc 4A et à travers la buse 16. Cependant, le volume Vl augmente lors de la coupure de courants élevés et par suite la surpression générée pour la coupure est diminuée. Un autre inconvénient est que les deux contacts d'arc 4A, 7A peuvent se repousser mutuellement lors de la coupure de courants de court-
circuit élevés si la force du ressort 13 n'est pas suffisante. En outre, les soufflages en parallèle l'un de l'autre provenant respectivement des volumes Vl, V4 ont tendance à se perturber mutuellement. En d'autres termes, cette solution ne peut être appliquée pour des courants de court-circuit élevés (> 25kA) . Patent EP 0 441 292 discloses a solution similar to the previous one and which furthermore consists, according to the short-circuit operation illustrated in FIGS. 3 and 4, of producing a double blow-out flow from the volumes V1 and V4 in parallel towards the contact d 4A and through the nozzle 16. However, the volume Vl increases during the breaking of high currents and consequently the overpressure generated for the cut is reduced. Another disadvantage is that the two arcing contacts 4A, 7A may repel each other when breaking short-circuit currents. high circuit if the force of the spring 13 is not sufficient. In addition, the blows in parallel from each other respectively volumes V1, V4 tend to be mutually disrupted. In other words, this solution can not be applied for high short-circuit currents (> 25kA).
Le brevet WO 2006/066420 divulgue une autre solution qui consiste à refroidir l'arc qui se produit entre les contacts d'arc 4 et 5 par un soufflage de gaz généré depuis le volume 24, comme schématisé en figure 1 de ce brevet. L'augmentation de pression dans le volume 24 est réalisée par le gaz comprimé provenant du volume 27 par le canal 29 et simultanément par 1' échauffement des gaz provoqué par l'énergie de l'arc. WO 2006/066420 discloses another solution which consists in cooling the arc which occurs between the arcing contacts 4 and 5 by blowing gas generated from the volume 24, as shown schematically in FIG. 1 of this patent. The increase in pressure in the volume 24 is achieved by the compressed gas from the volume 27 through the channel 29 and simultaneously by the heating of the gases caused by the energy of the arc.
Un inconvénient de cette solution est que le volume 27 est agencé sur un diamètre extérieur au volume 24. Ce diamètre extérieur est large et tend à augmenter le diamètre des isolants 3, 3c. A disadvantage of this solution is that the volume 27 is arranged on an outer diameter of the volume 24. This outer diameter is wide and tends to increase the diameter of the insulators 3, 3c.
Un autre inconvénient de cette solution est que le piston de soufflage 28 et le contact d'arc 4 doivent être déplacés par le même mécanisme par le biais d'une tringlerie complexe du fait des courses différentes à réaliser pour chaque pièce mobile et que la tringlerie doit avoir achever la compression dans le volume 27 lorsque l'arc est établi entre les contacts d'arc 4 et 5. Another disadvantage of this solution is that the blowing piston 28 and the arc contact 4 must be moved by the same mechanism by means of a complex linkage because of the different races to be performed for each moving part and that the linkage must have completed compression in the volume 27 when the arc is established between the arc contacts 4 and 5.
Il est connu du brevet GB 1570035, très ancien, une chambre de coupure de disjoncteur comprenant des tiges 41 fixées sur un piston de soufflage 37 d'arc et une coupelle 30 coulissante autour d'un contact d'arc mobile 14 en appui temporaire
contre les tiges, le déplacement du contact d'arc mobile 14 par l'organe de manœuvre permettant le déplacement simultané du piston de soufflage sous l'action d'un ressort 38 jusqu'à la compression complète d'un volume de compression 40. It is known from patent GB 1570035, very old, a circuit breaker breaking chamber comprising rods 41 fixed on an arc blowing piston 37 and a sliding cup 30 around a movable arcing contact 14 in temporary support. against the rods, the displacement of the movable arcing contact 14 by the operating member allowing the simultaneous movement of the blowing piston under the action of a spring 38 to the complete compression of a compression volume 40.
La chambre de coupure selon ce document GB 1570035 n'est pas adaptée aux performances requises aux disjoncteurs haute tension récents de 7,2 kV à 800 kV. En effet, dans la chambre de coupure divulguée 1' échauffement des gaz de soufflage se produit en générant, au préalable de la coupure de l'arc 28 définitive, un arc initial 27 au sein même du volume de soufflage 6, 26. Cela conduit à une détérioration significative des propriétés diélectriques du gaz contenu dans ce volume 6, 26 et donc implique une inadaptation aux disjoncteurs haute tension récents. The breaking chamber according to this document GB 1570035 is not adapted to the performance required for recent high-voltage circuit breakers from 7.2 kV to 800 kV. Indeed, in the disclosed breaking chamber 1 'heating blowing gases occurs by generating, prior to the cutting of the final arc 28, an initial arc 27 within the same blowing volume 6, 26. This leads to a significant deterioration of the dielectric properties of the gas contained in this volume 6, 26 and therefore implies an unsuitability for recent high-voltage circuit breakers.
Le but de l'invention est ainsi de proposer une chambre de coupure pour les disjoncteurs haute ou moyenne tension typiquement dans la gamme de 7.2 kV à 800 kV qui ne présente pas les inconvénients de l'art antérieur et qui nécessite une faible énergie de manœuvre, en particulier en cas de coupure de courant de court-circuit élevés (> 63kA) . EXPOSÉ DE L'INVENTION Pour ce faire, l'invention a pour objet une chambre de coupure de courant pour disjoncteur à moyenne ou haute tension s' étendant selon un axe longitudinal et comprenant :
- une paire de contacts d'arc dont l'un est fixe et l'autre est mobile selon l'axe longitudinal (XX') sous l'action d'une tige de manœuvre pour se séparer mutuellement lors d'une coupure de courant; la course en translation du contact mobile étant suffisamment élevée pour réaliser la coupure de courant quelle que soit valeur et pour obtenir la tenue diélectrique du disjoncteur, The object of the invention is thus to provide a breaking chamber for high or medium voltage circuit breakers typically in the range of 7.2 kV to 800 kV which does not have the disadvantages of the prior art and which requires a low energy maneuver , especially in case of high short-circuit current failure (> 63kA). SUMMARY OF THE INVENTION To this end, the object of the invention is a current breaking chamber for a medium or high voltage circuit breaker extending along a longitudinal axis and comprising: a pair of arcing contacts, one of which is fixed and the other is movable along the longitudinal axis (XX ') under the action of a maneuvering rod to separate from one another during a power failure ; the travel in translation of the movable contact being sufficiently high to achieve the power failure whatever value and to obtain the dielectric strength of the circuit breaker,
- une buse de soufflage d'arc solidaire du contact d'arc fixe, an arc-blowing nozzle integral with the fixed-arc contact,
- une chambre de soufflage dont le volume V2 est figé et qui débouche à l'intérieur de la buse de soufflage pour amener le gaz de soufflage vers l'arc formé entre les contacts lors d'une coupure, - A blowing chamber whose volume V2 is fixed and which opens inside the blowing nozzle to bring the blowing gas to the arc formed between the contacts during a cut,
- une chambre de compression, sensiblement agencée derrière la chambre de soufflage parallèlement à l'axe longitudinal, et dont le volume Vl varie et débouche dans la chambre de soufflage sous l'action d'un piston, a compression chamber, substantially arranged behind the blowing chamber parallel to the longitudinal axis, and whose volume Vl varies and opens into the blowing chamber under the action of a piston,
- un ressort hélicoïdal fixé par une de ses extrémités directement au piston et par l'autre de ses extrémités à une pièce fixe, a helical spring fixed at one of its ends directly to the piston and at the other of its ends to a fixed part,
des moyens de liaison mécanique temporaire entre le piston et le contact d'arc mobile pour réaliser la compression du ressort en appui contre le piston lors d'une manœuvre de fermeture des contacts et pour obtenir une course du contact d'arc mobile supérieure à la course du ressort qui réalise la compression complète du volume Vl, ladite compression complète du gaz dans le volume Vl étant par ailleurs
réalisée approximativement dès que les contacts d'arc sont séparés, temporary mechanical connection means between the piston and the movable arcing contact for compressing the spring bearing against the piston during a closing maneuver of the contacts and to obtain a stroke of the movable arcing contact greater than the stroke of the spring which performs the complete compression of the volume Vl, said complete compression of the gas in the volume Vl being moreover performed approximately as soon as the arcing contacts are separated,
dans laquelle la chambre de soufflage débouche dans la buse de soufflage par un canal de soufflage pour amener le gaz de soufflage sur la zone extérieure à la chambre de soufflage où se produit l'unique arc formé entre les contacts d'arc lors d'une coupure . wherein the blowing chamber opens into the blast nozzle through a blast channel for supplying the blast gas to the area outside the blast chamber where the single arc formed between the arc contacts occurs during a blast. cut.
Autrement définie, l'invention consiste donc essentiellement en combinaison à : Otherwise defined, the invention therefore consists essentially in combination with:
- définir un volume de soufflage figé et une buse de soufflage fixe afin de réduire la masse mobile de la chambre de coupure et par là l'énergie cinétique, define a fixed blowing volume and a fixed blast nozzle in order to reduce the moving mass of the breaking chamber and thereby the kinetic energy,
- générer une augmentation de pression dans le volume de soufflage principalement par 1' échauffement des gaz en courants élevés, et avoir une augmentation de pression par le volume de compression pour les coupures en faibles courants, generating a pressure increase in the blowing volume mainly by heating the gases in high currents, and having a pressure increase by the compression volume for the cuts in small currents,
- produire une compression des gaz, jusqu'à approximativement ce que les contacts d'arc soient séparés, et uniquement par un ressort hélicoïdal qui pousse le piston et ainsi réduit le volume de compression, l'augmentation de pression étant alors transmise au volume de soufflage par l'ouverture d'une valve. Le ressort est par ailleurs agencé juste derrière le piston et est comprimé durant une opération de fermeture en étant poussé par les moyens de liaison mécanique temporaire. L'énergie nécessaire à la compression du gaz est ainsi minimisée du fait de la proximité du ressort avec le volume de compression,
- obtenir une manière simple de déplacer le piston et le contact d'arc mobile avec leurs courses respectives nécessaires, la course du contact d'arc mobile étant égale à la course de compression du piston plus une course supplémentaire pour obtenir une distance suffisante entre les contacts d'arc en position ouverte (suffisamment élevée pour réaliser la coupure de courant quelle que soit valeur et pour obtenir la tenue diélectrique du disjoncteur), - producing a compression of the gases, until approximately that the arcing contacts are separated, and only by a coil spring which pushes the piston and thus reduces the compression volume, the pressure increase being then transmitted to the volume of blowing through the opening of a valve. The spring is also arranged just behind the piston and is compressed during a closing operation by being pushed by the temporary mechanical connection means. The energy required for the compression of the gas is thus minimized because of the proximity of the spring to the compression volume, obtaining a simple way of moving the piston and the movable arcing contact with their respective necessary strokes, the stroke of the movable arcing contact being equal to the compression stroke of the piston plus an additional stroke to obtain a sufficient distance between the arcing contacts in the open position (high enough to achieve the power failure regardless of value and to obtain the dielectric strength of the circuit breaker),
- définir une géométrie à double flux de soufflage sur une zone extérieure au volume de soufflage où se produit l'unique arc formé entre les contacts d'arc lors d'une coupure, defining a dual flow flow geometry on an area outside the blowing volume where the single arc formed between the arcing contacts occurs during a break,
avoir la possibilité d'utiliser une commande de manœuvre extérieure au disjoncteur qui fournit une énergie au juste nécessaire pour fermer les contacts et pour manœuvrer le contact d'arc mobile lors de l'ouverture. have the possibility to use a circuit breaker external control command that provides just the energy needed to close the contacts and to maneuver the movable arcing contact when opening.
Par comparaison à la chambre de coupure selon le document GB 1570035 cité en préambule, la chambre de coupure selon l'invention est parfaitement adapté aux performances requises dans les disjoncteurs haute tension modernes, typiquement de 7,2kV à 80OkV. Compared to the breaking chamber according to GB 1570035 cited in the preamble, the breaking chamber according to the invention is perfectly suited to the performance required in modern high-voltage circuit breakers, typically from 7.2kV to 80OkV.
Par comparaison aux chambres de coupure selon les documents FR 2 435 118 et EP 0 441 292 mentionnées en préambule, la chambre de coupure selon l'invention présente : In comparison with the breaking chambers according to the documents FR 2 435 118 and EP 0 441 292 mentioned in the preamble, the breaking chamber according to the invention has:
- un volume de soufflage V2 figé et qui n'est pas augmenté avec les augmentations importantes de pression durant les coupures de courant élevées,
- une chambre de soufflage avec une forme standard telle que celle utilisée dans les disjoncteurs à haute tension modernes, et qui débouche par un canal de diamètre réduit sur la zone ou se produit l'arc, a blown volume V2 that is not increased with the large increases in pressure during the high power outages, a blow-molding chamber with a standard shape such as that used in modern high-voltage circuit breakers, and which opens with a small diameter channel on the zone where the arc occurs,
- un double flux de gaz de soufflage sur a double flow of blowing gas on
1' arc . 1 bow.
Par comparaison avec une chambre de coupure selon le brevet WO 2006/066420 mentionné en préambule, la chambre de coupure selon l'invention présente : By comparison with a breaking chamber according to the patent WO 2006/066420 mentioned in the preamble, the breaking chamber according to the invention has:
- un diamètre plus faible des pièces actives de l'agencement de la chambre de compression derrière celle de soufflage, a smaller diameter of the active parts of the arrangement of the compression chamber behind that of blowing,
- un mécanisme plus simple pour déplacer le piston et le contact d'arc mobile, a simpler mechanism for moving the piston and the movable arcing contact,
- une plus grande efficacité du fait de la proximité du ressort avec le volume de compression, - greater efficiency due to the proximity of the spring with the compression volume,
- une forme de la chambre de soufflage et une forme de canal reliant la chambre de soufflage à la zone d'arc standards, comme usuellement utilisés dans les disjoncteurs à haute tension. Cela permet d'avoir un mélange optimal entre gaz chauds et froids dans le volume de soufflage. a shape of the blowing chamber and a channel shape connecting the blowing chamber to the standard arc zone, as usually used in high-voltage circuit breakers. This makes it possible to have an optimal mixture between hot and cold gases in the blowing volume.
Selon un premier mode de réalisation, les moyens de liaison mécanique temporaire sont agencés à l'extérieur des chambres de soufflage et de compression par rapport à l'axe longitudinal. According to a first embodiment, the temporary mechanical connection means are arranged outside the blow and compression chambers with respect to the longitudinal axis.
Une variante avantageuse des moyens de liaison mécanique temporaire consiste en un tube fixé au piston et de diamètre sensiblement égal au contact permanent lui-même fixé au contact d'arc mobile, ledit tube étant en appui contre l'extrémité du contact
permanent mobile jusqu'à la compression complète du volume Vl . An advantageous variant of the temporary mechanical connection means consists of a tube fixed to the piston and of diameter substantially equal to the permanent contact itself fixed to the moving arcing contact, said tube being in abutment against the end of the contact mobile permanent until complete compression of the volume Vl.
Selon un deuxième mode de réalisation, les moyens de liaison mécanique temporaire sont agencés à l'intérieur des chambres de soufflage et de compression par rapport à l'axe longitudinal. According to a second embodiment, the temporary mechanical connection means are arranged inside the blow and compression chambers with respect to the longitudinal axis.
Selon une variante avantageuse, le contact d'arc fixe présente une forme générale tubulaire, les moyens de liaison mécanique temporaire étant agencés à l'intérieur du tube d'arc fixe. Cette variante est avantageuse car elle permet d'obtenir une chambre plus compacte par rapport à une chambre selon l'autre variante avec les moyens de liaison temporaire consistant en un tube de sensiblement égal au contact permanent. According to an advantageous variant, the fixed arc contact has a generally tubular shape, the temporary mechanical connection means being arranged inside the fixed arc tube. This variant is advantageous because it makes it possible to obtain a more compact chamber with respect to a chamber according to the other variant with the temporary connection means consisting of a tube of substantially equal to the permanent contact.
Selon cette variante avantageuse, les moyens de liaison mécanique temporaire comprennent un tube fixé au piston et de diamètre inférieur au contact fixe, ledit tube étant en appui contre l'extrémité du contact d'arc mobile jusqu'à la compression complète du volume Vl. On assigne ici en quelque sorte une nouvelle fonction d'appui temporaire au contact d'arc mobile, ce qui simplifie la réalisation par rapport à l'autre variante avec les moyens de liaison temporaire consistant en un tube de sensiblement égal au contact permanent . According to this advantageous variant, the temporary mechanical connection means comprise a tube fixed to the piston and of smaller diameter than the fixed contact, said tube being in abutment against the end of the movable arc contact until the complete compression of the volume Vl. Here we assign a new temporary support function to the movable arcing contact, which simplifies the realization compared to the other variant with the temporary connection means consisting of a tube substantially equal to the permanent contact.
L'invention concerne un disjoncteur à haute ou moyenne tension supérieure, comprenant, pour un pôle, une ou plusieurs chambres de coupure décrites précédemment.
BREVE DESCRIPTION DES DESSINS The invention relates to a high or medium voltage circuit breaker, comprising, for a pole, one or more breaking chambers described above. BRIEF DESCRIPTION OF THE DRAWINGS
D'autres avantages et caractéristiques de l'invention ressortiront mieux à la lecture de la description détaillée faite en référence aux figures suivantes : Other advantages and characteristics of the invention will emerge more clearly on reading the detailed description given with reference to the following figures:
- les figures 1 à 4 représentent un premier mode de réalisation d'une chambre de coupure selon l'invention en vue de coupe longitudinale et selon différentes position depuis la fermeture des contacts jusqu'à l'ouverture extrême des contacts et la coupure réalisée, - Figures 1 to 4 show a first embodiment of a breaking chamber according to the invention for longitudinal sectional view and in different positions from the closure of the contacts to the extreme opening of the contacts and the cut made,
- la figure 5 est une vue en coupe transversale de la chambre de coupure selon les figures 1 à 4, FIG. 5 is a cross-sectional view of the interrupting chamber according to FIGS. 1 to 4,
- les figures 6 et 7 représentent un deuxième mode de réalisation d'une chambre de coupure selon l'invention en vue de coupe longitudinale et respectivement en position de fermeture des contacts et d' ouverture extrême des contacts et la coupure réalisée. - Figures 6 and 7 show a second embodiment of a breaking chamber according to the invention for longitudinal section and respectively in the closed position of the contacts and the extreme opening of the contacts and the cut made.
EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERS DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS
La chambre de coupure de courant 1 pour disjoncteur à moyenne ou haute tension selon l'invention s'étend selon un axe longitudinal (XX') et comprend tout d'abord une enveloppe isolante 10 et une paire de contacts permanents 2, 3 dont l'un est fixe 3 et l'autre 2 est mobile selon l'axe longitudinal (XX') sous l'action d'une tige de manœuvre non représentée. The current interrupting chamber 1 for a medium or high voltage circuit breaker according to the invention extends along a longitudinal axis (XX ') and firstly comprises an insulating envelope 10 and a pair of permanent contacts 2, 3 of which one is fixed 3 and the other 2 is movable along the longitudinal axis (XX ') under the action of a not shown operating rod.
Elle comprend également une paire de contacts d'arc 4, 5 dont l'un 4 est fixe et solidaire
du contact fixe permanent 3 et l'autre 5 est mobile selon l'axe longitudinal (XX') et solidaire du contact mobile permanent 2. Les contacts d'arc 4, 5 sont prévus pour se séparer mutuellement lors d'une coupure de courant. La course en translation du contact mobile 5 est suffisamment élevée pour réaliser la coupure de courant quelle que soit valeur et pour obtenir la tenue diélectrique du disjoncteur. It also comprises a pair of arcing contacts 4, 5 of which one is fixed and secured. the permanent fixed contact 3 and the other 5 is movable along the longitudinal axis (XX ') and integral with the permanent movable contact 2. The arc contacts 4, 5 are provided to separate each other during a power failure . The travel in translation of the movable contact 5 is sufficiently high to achieve the power failure regardless of value and to obtain the dielectric strength of the circuit breaker.
Il est prévu en outre une buse de soufflage d'arc 6 solidaire du contact d'arc fixe 4. There is further provided an arc-blowing nozzle 6 integral with the fixed-arc contact 4.
Une chambre de soufflage 7 délimitée par une pièce fixe 70 et la buse de soufflage d'arc 6 définit un volume V2 figé et qui débouche à l'intérieur de la buse de soufflage 6 par un canal de soufflage 700 de diamètre réduit pour amener le gaz de soufflage dans la zone Z, extérieure à la chambre I1 où se produit l'arc formé entre les contacts d'arc lors d'une coupure . A blowing chamber 7 delimited by a fixed part 70 and the arc-blowing nozzle 6 defines a fixed volume V2 and which opens inside the blast nozzle 6 by a blowing duct 700 of reduced diameter to bring the blowing gas in the zone Z outside the chamber I 1 where the arc formed between the arcing contacts occurs during a break.
Une chambre de compression 8 définit un volume Vl qui varie et débouche dans la chambre de soufflage 7 sous l'action d'un piston 9. Les chambres de compression 8 et de soufflage 7 sont sensiblement agencées l'une derrière l'autre parallèlement à l'axe longitudinal XX' . A compression chamber 8 defines a volume Vl that varies and opens into the blowing chamber 7 under the action of a piston 9. The compression chambers 8 and blowing 7 are substantially arranged one behind the other parallel to the longitudinal axis XX '.
Un ressort hélicoïdal 11 est fixé par une de ses extrémités 110 directement au piston et par l'autre de ses extrémités 111 à une pièce fixe 12. A helical spring 11 is fixed at one of its ends 110 directly to the piston and at the other of its ends 111 to a fixed part 12.
La chambre de coupure 1 comprend en outre des moyens de liaison mécanique temporaire 13 entre le piston 9 et le contact d'arc mobile 4 pour réaliser la compression du ressort 11 en appui contre le piston
lors d'une manœuvre de fermeture des contacts 4, 5 et pour obtenir une course du contact d'arc mobile 5 supérieure à la course du ressort 11 qui réalise la compression complète du volume Vl. Par ailleurs, la compression complète du gaz dans le volume Vl est réalisée approximativement dès que les contacts d'arc 4, 5 sont séparés (figure 2) . The interrupting chamber 1 further comprises temporary mechanical connection means 13 between the piston 9 and the movable arcing contact 4 to compress the spring 11 against the piston during a closing operation of the contacts 4, 5 and to obtain a stroke of the movable arcing contact 5 greater than the stroke of the spring 11 which performs the complete compression of the volume Vl. Furthermore, the complete compression of the gas in the Volume Vl is approximately made as soon as the arcing contacts 4, 5 are separated (FIG. 2).
Le premier mode de réalisation prévoit que le ressort 11 est comprimé par des moyens de liaison temporaire agencés à l'extérieur des pièces de la chambre (figures 1, 2, 3, 4 et 5) . Tel qu'illustré, ces moyens 13 consistent en un tube 130 fixé au piston 9 par des axes 131. The first embodiment provides that the spring 11 is compressed by temporary connection means arranged outside the rooms of the chamber (Figures 1, 2, 3, 4 and 5). As illustrated, these means 13 consist of a tube 130 fixed to the piston 9 by pins 131.
Le deuxième mode de réalisation prévoit que le ressort 11 est comprimé par des moyens de liaison temporaire agencés à l'intérieur de la chambre 1. (figures 6 et 7) . Tel qu'illustré, ces moyens 13 consistent en un tube 132 fixé au piston 9 et de diamètre inférieur au contact fixe 4, ledit tube 132 étant en appui contre l'extrémité du contact d'arc mobile 5 jusqu'à la compression complète du volume Vl. The second embodiment provides that the spring 11 is compressed by temporary connection means arranged inside the chamber 1. (Figures 6 and 7). As illustrated, these means 13 consist of a tube 132 attached to the piston 9 and of smaller diameter than the fixed contact 4, said tube 132 being in abutment against the end of the movable arc contact 5 until the complete compression of the volume Vl.
Le fonctionnement des chambres de coupure 1 va maintenant être expliqué plus en détail. The operation of the breaking chambers 1 will now be explained in more detail.
Lors de la fermeture des contacts, la pièce mobile 2 pousse le tube 130 et ainsi le piston 9 qui y est lié par les axes 131 (voir par exemple la figure 5) et comprime le ressort 11. Une valve 14 implantée dans une ouverture 90 dans le piston 9 évite d'avoir une chute de pression dans le volume Vl (figure 1) . When closing the contacts, the moving part 2 pushes the tube 130 and thus the piston 9 which is connected thereto by the axes 131 (see for example Figure 5) and compresses the spring 11. A valve 14 implanted in an opening 90 in the piston 9 avoids having a pressure drop in the volume Vl (Figure 1).
Lors de l'ouverture, le ressort 11 pousse le piston 9 et le tube 130 qui y est lié (vers la
droite sur la figure 2), la pièce intégrant le contact d'arc 5 et permanent 2 est également poussée et en même temps déplacée en translation par la tige de manoeuvre non représentée. Le dimensionnement est tel que le tube 130 et la pièce 2, 5 restent en contact C jusqu'à ce que la position sur la figure 2 soit atteinte. Le contact permanent 2 est séparé du contact permanent 3 dans cette position. Durant cette phase, le gaz est comprimé dans Vl, la surpression ouvre la valve 15 entre les volumes Vl et V2, de sorte que le volume V2 est précomprimé et avant que l'énergie de l'arc ait chauffé le gaz dans V2. When opening, the spring 11 pushes the piston 9 and the tube 130 which is bound (towards the right in Figure 2), the part integrating the arc contact 5 and permanent 2 is also pushed and at the same time moved in translation by the not shown actuating rod. The dimensioning is such that the tube 130 and the part 2, 5 remain in contact C until the position in FIG. 2 is reached. The permanent contact 2 is separated from the permanent contact 3 in this position. During this phase, the gas is compressed in V1, the overpressure opens the valve 15 between the volumes V1 and V2, so that the volume V2 is precompressed and before the energy of the arc has heated the gas in V2.
Puis, le contact d'arc 4 reste fixe tandis que le contact d' arc 5 est déplacé par la tige de manoeuvre non représentée (figures 3 et 4) . Après que la séparation des contacts d'arc 4, 5 a eu lieu, l'arc s'étire, l'énergie de l'arc chauffe le gaz dans le volume V2 et augmente la pression dans ce volume V2. Au courant zéro, la surpression dans la chambre 7 produit un soufflage par l'intermédiaire du canal de soufflage 700 qui refroidit l'arc dans la zone Z extérieure à la chambre 7 et en conséquence, l'arc est interrompu. Then, the arc contact 4 remains fixed while the arc contact 5 is moved by the not shown operating rod (Figures 3 and 4). After the separation of the arcing contacts 4, 5 has taken place, the arc is stretched, the energy of the arc heats the gas in the volume V2 and increases the pressure in this volume V2. At zero current, the overpressure in the chamber 7 produces a blow through the blast channel 700 which cools the arc in the zone Z outside the chamber 7 and consequently, the arc is interrupted.
Dans le mode de réalisation de la figure 6, le ressort 11 est comprimé lorsque le piston 9 est poussé vers la gauche par le contact d'arc mobile 5 via le tube isolant 132. In the embodiment of FIG. 6, the spring 11 is compressed when the piston 9 is pushed to the left by the moving arc contact 5 via the insulating tube 132.
La figure 7 montre la chambre de coupure 1 selon le deuxième mode de réalisation, en position complètement ouverte.
FIG. 7 shows the breaking chamber 1 according to the second embodiment, in the fully open position.
Claims
1. Chambre de coupure (1) de courant pour disjoncteur à moyenne ou haute tension s' étendant selon un axe longitudinal (XX' ) et comprenant : 1. A circuit breaking chamber (1) for a medium or high voltage circuit breaker extending along a longitudinal axis (XX ') and comprising:
- une paire de contacts d'arc dont l'un (4) est fixe et l'autre (5) est mobile selon l'axe longitudinal (XX') sous l'action d'une tige de manœuvre pour se séparer mutuellement lors d'une coupure de courant; la course en translation du contact mobile étant suffisamment élevée pour réaliser la coupure de courant quelle que soit valeur et pour obtenir la tenue diélectrique du disjoncteur, a pair of arcing contacts of which one (4) is fixed and the other (5) is movable along the longitudinal axis (XX ') under the action of a maneuvering rod to separate each other during a power failure; the travel in translation of the movable contact being sufficiently high to achieve the power failure whatever value and to obtain the dielectric strength of the circuit breaker,
- une buse (6) de soufflage d'arc solidaire du contact d'arc fixe, an arc-blowing nozzle (6) integral with the fixed-arc contact,
- une chambre de soufflage (7) dont le volume V2 est figé et qui débouche à l'intérieur de la buse de soufflage, - A blowing chamber (7) whose volume V2 is frozen and which opens into the blowing nozzle,
- une chambre de compression (8), agencée sensiblement derrière la chambre de soufflage parallèlement à l'axe longitudinal XX' et dont le volume Vl varie et débouche dans la chambre de soufflage sous l'action d'un piston (9), - a compression chamber (8), arranged substantially behind the blowing chamber parallel to the longitudinal axis XX 'and whose volume Vl varies and opens into the blowing chamber under the action of a piston (9),
- un ressort hélicoïdal (11) fixé par une de ses extrémités (110) directement au piston (9) et par l'autre de ses extrémités (111) à une pièce fixe (12), a helical spring (11) fixed at one of its ends (110) directly to the piston (9) and at the other of its ends (111) to a fixed part (12),
- des moyens de liaison mécanique temporaire (13, 130, 131, 132) entre le piston (9) et le contact d'arc mobile (5) pour réaliser la compression du ressort (11) fixé directement au piston lors d'une manœuvre de fermeture des contacts et pour obtenir une course du contact d'arc mobile supérieure à la course du ressort qui réalise la compression complète du volume Vl, ladite compression complète du gaz dans le volume Vl étant par ailleurs réalisée approximativement dès que les contacts d' arc sont séparés, - Temporary mechanical connection means (13, 130, 131, 132) between the piston (9) and the movable arcing contact (5) for compressing the spring (11) directly attached to the piston during a closing operation of the contacts and to obtain a stroke of the movable arcing contact greater than the stroke of the spring which carries out the complete compression of the volume Vl, said complete compression of the gas in the volume Vl being moreover approximately that the arcing contacts are separated,
dans laquelle la chambre de soufflage débouche dans la buse de soufflage par un canal de soufflage (700) pour amener le gaz de soufflage sur la zone Z extérieure à la chambre de soufflage où se produit l'unique arc formé entre les contacts d'arc lors d'une coupure. wherein the blowing chamber opens into the blowing nozzle through a blast duct (700) for supplying blast gas to the zone Z outside the blow chamber where the single arc formed between the arc contacts occurs. during a break.
2. Chambre de coupure (1) selon la revendication 1, dans laquelle les moyens de liaison mécanique temporaire sont agencés à l'extérieur des chambres de soufflage et de compression par rapport à l'axe longitudinal (XX'). 2. Cutoff chamber (1) according to claim 1, wherein the temporary mechanical connection means are arranged outside the blow and compression chambers with respect to the longitudinal axis (XX ').
3. Chambre de coupure (1) selon la revendication 2, dans laquelle les moyens de liaison mécanique temporaire comprennent un tube (130) fixé au piston et de diamètre sensiblement égal au contact permanent lui-même fixé au contact d'arc mobile, ledit tube étant en appui contre l'extrémité du contact permanent mobile (2) jusqu'à la compression complète du volume Vl . 3. Cutoff chamber (1) according to claim 2, wherein the temporary mechanical connection means comprise a tube (130) attached to the piston and of diameter substantially equal to the permanent contact itself fixed to the moving arc contact, said tube being pressed against the end of the movable permanent contact (2) until complete compression of the volume Vl.
4. Chambre de coupure (1) selon la revendication 1, dans laquelle les moyens de liaison mécanique temporaire sont agencés à l'intérieur des chambres de soufflage et de compression par rapport à l'axe longitudinal (XX'). 4. Cutoff chamber (1) according to claim 1, wherein the temporary mechanical connection means are arranged inside the blow and compression chambers with respect to the longitudinal axis (XX ').
5. Chambre de coupure (1) selon la revendication 4, dans laquelle le contact d'arc fixe (4) présente une forme générale tubulaire, les moyens de liaison mécanique temporaire étant agencés à l'intérieur du tube d'arc fixe. 5. Cutoff chamber (1) according to claim 4, wherein the fixed arc contact (4) has a generally tubular shape, the temporary mechanical connection means being arranged inside the fixed arc tube.
6. Chambre de coupure (1) selon la revendication 5, dans laquelle les moyens de liaison mécanique temporaire comprennent un tube (132) fixé au piston (9) et de diamètre inférieur au contact fixe, ledit tube étant en appui contre l'extrémité du contact d'arc mobile jusqu'à la compression complète du volume Vl. 6. Cutoff chamber (1) according to claim 5, wherein the temporary mechanical connection means comprise a tube (132) attached to the piston (9) and of smaller diameter than the fixed contact, said tube being in abutment against the end from the moving arc contact to the complete compression of the volume Vl.
7. Disjoncteur à haute ou moyenne tension supérieure, comprenant, pour un pôle, une ou plusieurs chambres de coupure (1) selon l'une quelconque des revendications précédentes. 7. High or medium voltage circuit breaker upper, comprising, for a pole, one or more breaking chambers (1) according to any one of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0955677A FR2949170B1 (en) | 2009-08-14 | 2009-08-14 | BREAKER CHAMBER FOR A MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER WITH REDUCED MANEUVER POWER |
PCT/EP2010/061535 WO2011018426A1 (en) | 2009-08-14 | 2010-08-09 | Cutoff chamber for medium- or high-voltage circuit breaker with reduced controlling power |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2465127A1 true EP2465127A1 (en) | 2012-06-20 |
Family
ID=41718669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10739374A Withdrawn EP2465127A1 (en) | 2009-08-14 | 2010-08-09 | Cutoff chamber for medium- or high-voltage circuit breaker with reduced controlling power |
Country Status (5)
Country | Link |
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EP (1) | EP2465127A1 (en) |
JP (1) | JP5615362B2 (en) |
CN (1) | CN102484015A (en) |
FR (1) | FR2949170B1 (en) |
WO (1) | WO2011018426A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3023649B1 (en) * | 2014-07-08 | 2016-08-19 | Alstom Technology Ltd | CIRCUIT BREAKER USING THE DIPHASIC STATE OF A GAS TO IMPROVE CUTTING PROPERTIES |
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FR2373141A1 (en) * | 1976-12-06 | 1978-06-30 | Cem Comp Electro Mec | HIGH VOLTAGE ELECTRICAL CUT-OFF DEVICE, IN PARTICULAR A SELF-BLOWING CIRCUIT BREAKER BY GAS |
US4359616A (en) | 1978-09-04 | 1982-11-16 | Mitsubishi Denki Kabushiki Kaisha | Self-extinguishing switch |
JPS5553831A (en) * | 1978-10-17 | 1980-04-19 | Mitsubishi Electric Corp | Gas switch |
FR2558299B1 (en) * | 1984-01-13 | 1987-03-20 | Alsthom Atlantique | HIGH VOLTAGE CIRCUIT BREAKER WITH ARC BLOWING |
FR2596574B1 (en) * | 1986-04-01 | 1988-05-20 | Alsthom | HIGH VOLTAGE CIRCUIT BREAKER WITH DIELECTRIC GAS UNDER PRESSURE |
DE3880190D1 (en) * | 1987-05-13 | 1993-05-19 | Bbc Brown Boveri & Cie | EXHAUST GAS SWITCH. |
FR2657998B1 (en) | 1990-02-07 | 1992-04-10 | Alsthom Gec | SELF - BLOWING MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER. |
FR2696274B1 (en) * | 1992-09-29 | 1994-11-04 | Alsthom Gec | Self-blowing high voltage circuit breaker having a reduced gas compression interrupting chamber. |
DE4402121A1 (en) * | 1994-01-21 | 1995-07-27 | Siemens Ag | Electrical high-voltage circuit breaker with a boiler room and a compression device |
DE19622460C2 (en) * | 1996-05-24 | 1998-04-02 | Siemens Ag | High-voltage circuit breaker with two drivable switch contact pieces |
ATE484067T1 (en) * | 2004-08-23 | 2010-10-15 | Abb Technology Ag | SWITCH CHAMBER AND HIGH PERFORMANCE SWITCH |
CN101120423B (en) | 2004-12-24 | 2010-06-23 | Abb技术有限公司 | Generator switch having improved switching capacity |
EP1843376B1 (en) * | 2006-04-05 | 2009-06-03 | Abb Research Ltd. | Switching chamber of a high voltage switch with a variable heating volume |
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2009
- 2009-08-14 FR FR0955677A patent/FR2949170B1/en not_active Expired - Fee Related
-
2010
- 2010-08-09 WO PCT/EP2010/061535 patent/WO2011018426A1/en active Application Filing
- 2010-08-09 CN CN2010800361989A patent/CN102484015A/en active Pending
- 2010-08-09 JP JP2012524211A patent/JP5615362B2/en not_active Expired - Fee Related
- 2010-08-09 EP EP10739374A patent/EP2465127A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of WO2011018426A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP5615362B2 (en) | 2014-10-29 |
JP2013502030A (en) | 2013-01-17 |
WO2011018426A1 (en) | 2011-02-17 |
CN102484015A (en) | 2012-05-30 |
FR2949170B1 (en) | 2011-11-25 |
FR2949170A1 (en) | 2011-02-18 |
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