EP3109878A1 - Vacuum interrupter and electrical protection apparatus comprising such an interrupter - Google Patents
Vacuum interrupter and electrical protection apparatus comprising such an interrupter Download PDFInfo
- Publication number
- EP3109878A1 EP3109878A1 EP16163619.6A EP16163619A EP3109878A1 EP 3109878 A1 EP3109878 A1 EP 3109878A1 EP 16163619 A EP16163619 A EP 16163619A EP 3109878 A1 EP3109878 A1 EP 3109878A1
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- EP
- European Patent Office
- Prior art keywords
- bulb
- aforementioned
- rod
- vacuum
- fixed
- 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.)
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/125—Load break switches comprising a separate circuit breaker
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66238—Specific bellows details
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66223—Details relating to the sealing of vacuum switch housings
Definitions
- the above-mentioned guiding device and the aforementioned fastening element form an integral part of a pre-existing part belonging to the bulb, which piece thus ensures the functions of guiding the rod, and of maintaining and positioning of the aforementioned compression spring inside the bulb.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
La présente invention concerne une ampoule à vide du genre comprenant une cartouche allongée sous vide, ladite cartouche comportant une enveloppe cylindrique (1) obturée par deux fonds (2,3) respectivement dits premier et second, dans laquelle sont logés deux contacts d'arc (4,5) dont l'un (4), fixe, est solidaire de l'un dit premier (2), des fonds précités, tandis que l'autre (5), mobile, est monté en bout d'une tige (6) montée à coulissement axial à l'intérieur de la cartouche, à travers l'autre (3) des fonds, dit second, entre une première position dite fermée de l'ampoule A dans laquelle les contacts d'arc (4,5) sont bout à bout et une position ouverte de l'ampoule dans laquelle les contacts d'arc sont séparés, et un ressort de compression (11) apte à exercer un effort de pression de contact sur le contact d'arc mobile (5) en position de fermeture des contacts d'arc (4,5). Cette ampoule est caractérisée en ce que le ressort de compression précité (11) est monté à l'intérieur de l'ampoule A autour de la tige (6), étant en appui par l'une (11 a) de ses extrémités, sur le contact d'arc mobile (4), et par son extrémité opposée (11b), sur une partie fixe (7) par rapport à l'enveloppe (1) de l'ampoule, cette partie fixe assurant le maintien et le positionnement du ressort (11) à l'intérieur de l'ampoule A.The present invention relates to a vacuum bottle of the type comprising a cartridge elongated under vacuum, said cartridge comprising a cylindrical envelope (1) closed by two bottoms (2, 3) respectively said first and second, in which are housed two arcing contacts (4,5) of which one (4), fixed, is integral with said one said one (2), aforementioned funds, while the other (5), mobile, is mounted at the end of a rod (6) mounted to slide axially inside the cartridge, through the other (3) funds, said second, between a first so-called closed position of the bulb A in which the arc contacts (4, 5) are end to end and an open position of the bulb in which the arcing contacts are separated, and a compression spring (11) adapted to exert a contact pressure force on the movable arcing contact (5). ) in the closed position of the arcing contacts (4,5). This bulb is characterized in that the aforesaid compression spring (11) is mounted inside the bulb A around the rod (6), being supported by one (11a) of its ends, on the movable arc contact (4), and its opposite end (11b), on a fixed part (7) relative to the envelope (1) of the bulb, this fixed part ensuring the maintenance and positioning of the spring (11) inside the bulb A.
Description
La présente invention concerne une ampoule à vide comprenant une cartouche allongée sous vide, ladite cartouche comportant une enveloppe cylindrique obturée par deux fonds respectivement dits premier et second, dans laquelle sont logés deux contacts d'arc dont l'un, fixe, est solidaire de l'un dit premier, des fonds précités, tandis que l'autre, mobile, est monté en bout d'une tige montée à coulissement axial à l'intérieur de la cartouche, à travers le fond dit second, entre une première position dite fermée de l'ampoule dans laquelle les contacts d'arc sont bout à bout et une position ouverte de l'ampoule dans laquelle les contacts d'arc sont séparés, et un ressort de compression apte à exercer un effort de pression de contact sur le contact d'arc mobile en position de fermeture des contacts d'arc.The present invention relates to a vacuum interrupter comprising a cartridge elongated under vacuum, said cartridge comprising a cylindrical envelope closed by two so-called first and second bottoms respectively, in which are housed two arcing contacts of which one fixed is integral with one said first, aforementioned funds, while the other, mobile, is mounted at the end of a rod mounted to slide axially inside the cartridge, through the bottom said second, between a first position called closed bulb in which the arcing contacts are butt and open position of the bulb in which the arcing contacts are separated, and a compression spring capable of exerting a contact pressure force on the movable arc contact in the closed position of the arc contacts.
La présente invention concerne également un appareillage de protection électrique basse ou moyenne tension tel un interrupteur ou un disjoncteur comportant une telle ampoule.The present invention also relates to low or medium voltage electrical protection equipment such as a switch or a circuit breaker comprising such a bulb.
On connaît des disjoncteurs dits à vide tel celui décrit dans le document
Dans ce type d'appareils, il est usuel de prévoir la disposition d'un ressort de pression de contact additionnel destiné à contrecarrer les forces de répulsion générées par le courant circulant à travers les contacts d'arc pendant la coupure.In this type of apparatus, it is customary to provide the provision of an additional contact pressure spring for counteracting the repulsive forces generated by the current flowing through the arcing contacts during the break.
On connaît également des appareillages dits interrupteurs à vide tels que décrits dans les documents
Dans de tels appareils, la pression de contact est habituellement assurée par la différence de pression entre l'extérieur et l'intérieur de l'ampoule à vide.In such devices, the contact pressure is usually provided by the pressure difference between the outside and the inside of the vacuum bulb.
Dans ce cas, l'effort de répulsion généré par le courant circulant à l'intérieur de l'ampoule n'est pas suffisant pour modifier la valeur de l'effort de contact. Ainsi, il n'y a pas de raison d'utiliser un ressort de contact additionnel comme ceci est le cas pour les disjoncteurs.In this case, the repulsive force generated by the current flowing inside the bulb is not sufficient to modify the value of the contact force. Thus, there is no reason to use an additional contact spring as is the case for circuit breakers.
Cependant, une telle ampoule à vide connectée en parallèle des contacts principaux doit faire face à deux contraintes principales, lesquelles s'énoncent comme suit :However, such a vacuum interrupter connected in parallel with the main contacts has to face two main constraints, which are as follows:
Lors de la fabrication de la cartouche de l'ampoule à grande échelle, il doit être tenu compte que des dispersions sur la longueur des tubes céramiques dont sont constituées les cartouches, peuvent être observées, ce qui va impacter directement les pressions de contact.When manufacturing the cartridge of the bulb on a large scale, it must be taken into account that dispersions along the length of the ceramic tubes of which the cartridges are constituted, can be observed, which will directly impact the contact pressures.
Pendant la manoeuvre des contacts mobiles, des vibrations peuvent se transmettre à l'intérieur de l'ampoule et générer des micro pertes de contact, en l'absence d'autres dispositifs que la pression atmosphérique locale pour maintenir les contacts bout à bout.During the operation of the moving contacts, vibrations can be transmitted inside the bulb and generate micro loss of contact, in the absence of other devices than the local atmospheric pressure to maintain the contacts end to end.
Ces deux contraintes peuvent être amplifiées si l'ampoule est utilisée sous une pression atmosphérique non contrôlée et en particulier dans le cas d'une installation à haute altitude.These two constraints can be amplified if the bulb is used under an uncontrolled atmospheric pressure and in particular in the case of a high altitude installation.
Dans ce cas, il est possible d'ajouter un ressort de pression de contact au bout du contact mobile, comme ceci est le cas pour certaines ampoules à vide utilisées dans des disjoncteurs. Cependant, cette solution présente l'inconvénient d'augmenter considérablement la longueur du dispositif constitué de l'ampoule, du ressort et du contact mobile, alors que l'objectif est de rendre plus compact l'interrupteur avec son ampoule connectée en parallèle.In this case, it is possible to add a contact pressure spring at the end of the moving contact, as is the case for some light bulbs. Vacuum used in circuit breakers. However, this solution has the disadvantage of considerably increasing the length of the device consisting of the bulb, the spring and the movable contact, while the objective is to make more compact the switch with its bulb connected in parallel.
La présente invention résout ce problème et propose une ampoule à vide ainsi qu'un appareil de protection électrique la comportant présentant une pression de contact améliorée sans augmenter l'encombrement de l'ampoule.The present invention solves this problem and proposes a vacuum interrupter and an electrical protection device having it having an improved contact pressure without increasing the size of the bulb.
A cet effet, la présente invention a pour objet une ampoule à vide du genre précédemment mentionnée, cette ampoule étant caractérisée en ce que le ressort de compression précité est monté à l'intérieur de l'ampoule autour de la tige, étant en appui par l'une de ses extrémités, sur le contact d'arc mobile, et par son extrémité opposée, sur une partie fixe par rapport à l'enveloppe de l'ampoule, cette partie fixe assurant le maintien et le positionnement du ressort à l'intérieur de l'ampoule.For this purpose, the subject of the present invention is a vacuum interrupter of the kind previously mentioned, this bulb being characterized in that the aforesaid compression spring is mounted inside the ampoule around the rod, being supported by one of its ends, on the moving arc contact, and its opposite end, on a fixed part relative to the envelope of the bulb, this fixed part ensuring the maintenance and positioning of the spring to the inside the bulb.
Selon une caractéristique particulière, la partie fixe précitée comporte un dispositif de guidage de la tige à l'intérieur de l'ampoule, ledit dispositif étant monté autour de la tige.According to a particular characteristic, the aforementioned fixed part comprises a device for guiding the rod inside the bulb, said device being mounted around the rod.
Selon une autre caractéristique, le dispositif de guidage précité est fixé à la paroi de fond dite seconde de l'ampoule.According to another characteristic, the aforementioned guiding device is fixed to the so-called second bottom wall of the bulb.
Selon une autre caractéristique, le ressort précité est en appui par l'une de ses extrémités, sur le dispositif de guidage précité et par son extrémité opposée, sur le contact d'arc mobile.According to another characteristic, the aforementioned spring is supported by one of its ends, on the aforementioned guide device and at its opposite end, on the moving arc contact.
Selon une autre caractéristique, cette ampoule comporte en outre un soufflet d'étanchéité monté autour de la tige et destiné à assurer l'étanchéité entre la partie intérieure de l'ampoule et l'extérieur de l'ampoule, et le ressort précité est monté à l'intérieur du soufflet précité.According to another feature, this bulb further comprises a sealing bellows mounted around the rod and intended to seal between the inner portion of the bulb and the outside of the bulb, and the aforesaid spring is mounted within the aforementioned bellows.
Selon une autre caractéristique, ce soufflet précité est fixé de manière étanche, par l'une de ses extrémités dite première, sur le fond dit second précité, et par son extrémité opposée, dite seconde, à la tige précitée.According to another characteristic, said bellows is fixed sealingly, by one of its ends said first, on said second said bottom, and its opposite end, said second, to the aforementioned rod.
Avantageusement, ce soufflet est fixé par son extrémité dite seconde à un support de soufflet, lequel est monté fixement autour de la tige.Advantageously, this bellows is fixed by its so-called second end to a bellows support, which is fixedly mounted around the rod.
Selon une autre caractéristique, le dispositif de guidage précité comporte une portion cylindrique dont l'un des bords libres, est destiné à coopérer avec le contact d'arc mobile, tandis que l'autre bord libre est plié en équerre de manière à former une paroi annulaire s'étendant dans un plan sensiblement perpendiculaire à l'axe de la portion cylindrique précitée, la portion cylindrique précitée étant destinée à être montée autour de la tige à l'intérieur de l'ampoule, tandis que la portion annulaire précitée est destinée à être amenée en appui sur la face extérieure de la paroi de fond dite seconde précitée.According to another characteristic, the aforementioned guiding device comprises a cylindrical portion of which one of the free edges is intended to cooperate with the moving arcing contact, while the other free edge is folded at right angles so as to form a annular wall extending in a plane substantially perpendicular to the axis of the aforementioned cylindrical portion, the aforementioned cylindrical portion being intended to be mounted around the rod inside the bulb, while the aforementioned annular portion is intended to to be brought into bearing on the outer face of said so-called second bottom wall.
Selon une autre caractéristique, le dispositif de guidage précité est fixé à la paroi de fond dite seconde précitée par l'intermédiaire d'un élément de fixation en forme de coupole, cette coupole comportant un orifice par lequel elle est montée autour de la tige et étant fixée par sa base sur la paroi de fond dite seconde de l'ampoule, cette coupole étant destinée à recevoir la portion annulaire du dispositif de guidage, ce dispositif de guidage étant fixé à la paroi de fond dite seconde précitée, par sertissage de cette portion annulaire et de la coupole.According to another characteristic, the aforementioned guiding device is fixed to said second said bottom wall by means of a dome-shaped fastening element, said dome having an orifice through which it is mounted around the stem and being fixed by its base on the so-called second bottom wall of the bulb, this cupola being intended to receive the annular portion of the guiding device, this guiding device being fixed to the so-called second bottom wall, by crimping this annular portion and dome.
Selon une réalisation particulière, le dispositif de guidage précité et l'élément de fixation précité font partie intégrante d'une pièce pré-existante appartenant à l'ampoule, laquelle pièce assure ainsi les fonctions de guidage de la tige, et de maintien et positionnement du ressort de compression précité à l'intérieur de l'ampoule.According to a particular embodiment, the above-mentioned guiding device and the aforementioned fastening element form an integral part of a pre-existing part belonging to the bulb, which piece thus ensures the functions of guiding the rod, and of maintaining and positioning of the aforementioned compression spring inside the bulb.
La présente invention a encore pour objet un appareillage de protection électrique basse ou moyenne tension comportant une ampoule à vide comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention also relates to a low or medium voltage electrical protection apparatus comprising a vacuum interrupter having the above-mentioned characteristics taken alone or in combination.
Selon une autre caractéristique, cet appareillage est un interrupteur ou un disjoncteur.According to another characteristic, this apparatus is a switch or a circuit breaker.
Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :
- La
figure 1 est une vue en coupe axiale d'une ampoule à vide selon l'invention, avant le montage du ressort et de l'élément de guidage du ressort, en position fermée des contacts, - La
figure 2 est une vue en coupe axiale de cette même ampoule, après le montage de ces deux éléments, toujours en position fermée des contacts, - La
figure 3 est une vue en coupe axiale de cette même ampoule en position ouverte des contacts, - La
figure 4 est une vue en coupe axiale de l'élément de guidage seul, - La
figure 5 est une vue de face du ressort, - La
figure 6 est une vue en coupe axiale du soufflet d'étanchéité situé à l'intérieur ce cette ampoule, - Les
figures 7 et 8 sont respectivement une vue en perspective et une vue en coupe axiale, d'un dispositif de fixation de l'élément de guidage précité à l'intérieur de l'ampoule, selon l'invention, et - Les
figures 9,10 et11 sont respectivement trois vues en perspective illustrant respectivement trois étapes successives permettant la mise en place et la fixation de l'élément de guidage précité.
- The
figure 1 is an axial sectional view of a vacuum interrupter according to the invention, before the spring and the spring guide element are mounted, in the closed position of the contacts, - The
figure 2 is an axial sectional view of the same bulb, after the assembly of these two elements, always in the closed position of the contacts, - The
figure 3 is an axial sectional view of this same bulb in the open position of the contacts, - The
figure 4 is an axial sectional view of the guide element alone, - The
figure 5 is a front view of the spring, - The
figure 6 is an axial sectional view of the sealing bellows located inside this bulb, - The
Figures 7 and 8 are respectively a perspective view and a view in axial section, of a fixing device of the aforementioned guide element inside the bulb, according to the invention, and - The
Figures 9,10 and11 are respectively three perspective views respectively illustrating three successive steps for the establishment and fixing of the aforementioned guide element.
Sur les figures, on voit une ampoule à vide A destinée à être utilisée dans un appareillage de protection électrique basse ou moyenne tension tel un disjoncteur ou un interrupteur électrique. Cette ampoule est en général disposée dans un circuit de dérivation monté en parallèle avec un circuit dit principal comportant les contacts principaux de l'appareillage précité. Lorsque cette ampoule est intégrée dans un disjoncteur, ces contacts d'arc sont destinés à tenir le courant de court-circuit, tandis que lorsque cette ampoule est intégrée dans un interrupteur, celle-ci est destinée à assurer la coupure du courant.
De manière connue en soi, cette ampoule A comporte une cartouche allongée sous vide comportant une enveloppe cylindrique 1 fermée par deux fonds 2,3. Les deux contacts d'arc précités 4,5 comportent un premier contact d'arc 4, dit fixe, solidaire de l'un 2 des deux fonds, tandis que l'autre contact d'arc 5, dit contact mobile, est monté en bout d'une tige 6, laquelle tige 6 est montée à coulissement à travers l'autre 3, dit second, des deux fonds, par l'intermédiaire d'un élément de guidage 7 fixe par rapport audit second fond 3 et traversant une ouverture 8 prévue dans ledit fond 3.In the figures, we see a vacuum bulb A for use in low or medium voltage electrical protection equipment such as a circuit breaker or an electrical switch. This bulb is generally disposed in a branch circuit connected in parallel with a circuit said main comprising the main contacts of the aforementioned apparatus. When this bulb is integrated in a circuit breaker, these arc contacts are intended to hold the short-circuit current, while when this bulb is integrated in a switch, it is intended to ensure the power cut.
In a manner known per se, this bulb A comprises a vacuum elongated cartridge comprising a
Ce contact d'arc 5 dit mobile est ainsi apte à être déplacé au moyen de ladite tige de commande 6 entre une position dite ouverte éloignée du contact d'arc fixe 4 et une position dite fermée dans laquelle ces deux contacts sont rapprochés et en contact de manière à permettre le passage du courant.
Une telle ampoule comporte également un soufflet dit d'étanchéité 9 destiné à assurer l'étanchéité entre la partie intérieure de l'ampoule et la partie extérieure de l'ampoule pendant le déplacement de la tige. Ce soufflet 9 est monté autour de la tige et est en appui par l'une 9a de ses extrémités 9a,9b, sur le fond 3 dit second de l'enveloppe 1 et, par son extrémité opposée 9b, sur une partie 5a de la tige 6 située à l'arrière du contact d'arc mobile 5 par l'intermédiaire d'un élément de support 10 du soufflet 9, ce support étant monté fixement autour de la tige et sur lequel est fixé cette extrémité 9b du soufflet. Ce support est en appui sur la face arrière 5a du contact d'arc mobile 5. Cet élément de support 10 du soufflet est représenté séparément sur la
Cette ampoule comporte également un ressort 11, dit ressort de pression de contact, apte à assurer une certaine pression de contact entre les contacts d'arc fixe et mobile en position de fermeture des contacts.
Ce ressort 11 est en appui par l'une 11 a de ses extrémités, sur la face arrière précitée 5a du contact d'arc mobile 5, par l'intermédiaire de l'élément de support de soufflet précité 10 sur lequel il s'appuie, et par son extrémité opposée 11 b, sur l'extrémité libre 7a de l' élément dit de guidage précité 7, cet élément étant représenté séparément sur la
Cet élément de guidage 7 comporte une partie cylindrique 7b dont l'un des bords libres 7a coopère avec le ressort 11, tandis que l'autre bord libre 7c se prolonge par une partie annulaire 7d s'étendant dans un plan s'étendant sensiblement perpendiculairement à l'axe de la tige 6. Cette partie annulaire 7d est destinée à venir en appui sur la face extérieure 3a de la paroi de fond 3 dite seconde de l'ampoule, par l'intermédiaire d'un support de fixation 12, en forme de coupole comportant un orifice 12a, ce support étant illustré séparément sur les
Le montage d'une ampoule selon l'invention va être décrit dans ce qui suit en référence aux figures.This so-called
Such a bulb also comprises a so-called sealing
This bulb also comprises a
This
This
The assembly of a bulb according to the invention will be described in the following with reference to the figures.
Sur la
Puis, le support formant coupole 12 est monté autour de l'extrémité libre extérieure de la tige 6 et fixé à la paroi de fond dite seconde 3 par brasage. Puis, le ressort de pression de contact, ou ressort de compression 11, est également monté autour de la tige 6, et amené en appui, par l'une de ses extrémités libres, sur le support 10 de soufflet.
Puis, l'élément de guidage 7 du ressort 11, est monté à son tour autour de la tige 6 jusqu'à venir en contact avec le ressort, tel qu'illustré sur la
Après quoi, l'on réalise la fixation de cet élément de guidage 7 par sertissage, tel qu'illustré sur la
L'ampoule A ainsi obtenue est telle que représentée sur les
Ainsi, l'une des surfaces sur laquelle s'appuie le ressort 11 est constituée par l'extrémité libre 7a de l'élément de guidage 7, laquelle surface a une position fixe par rapport à l'ampoule A, tandis que l'autre surface d'appui du ressort 11 est constituée par une face 5a du contact d'arc mobile 5, cette surface étant donc mobile.On the
Then, the
Then, the
After which, this
The bulb A thus obtained is as shown on the
Thus, one of the surfaces on which the
Ainsi, selon cette réalisation de l'invention, un ressort de compression est inséré dans le logement du soufflet et maintenu en place et en position par le dispositif de guidage du contact mobile.
Comme ce ressort est limité en encombrement, cette disposition implique donc un calcul bien précis de l'effort de pression de contact qui est nécessaire à la fois pour compenser les jeux de montage de l'ampoule et pour pallier aux micro pertes de contact.Thus, according to this embodiment of the invention, a compression spring is inserted into the housing of the bellows and held in place and in position by the guide device of the movable contact.
As this spring is limited in size, this provision therefore implies a very precise calculation of the contact pressure force which is necessary both to compensate for the assembly of the bulb and to compensate for the micro loss of contact.
Selon une autre réalisation non illustrée de l'invention, le dispositif de guidage et son support de fixation sur l'enveloppe de l'ampoule, font partie intégrante d'une partie préexistante de l'ampoule, laquelle partie étant fixe par rapport à l'enveloppe de l'ampoule, de manière que cette partie assure les fonctions de guidage de la tige supportant le contact mobile, et de maintien et de positionnement du ressort de compression dans l'ampoule. Cette réalisation permet d'obtenir une réduction du nombre de pièces et donc une réduction du coût de fabrication de cette ampoule.According to another non-illustrated embodiment of the invention, the guiding device and its attachment support on the envelope of the bulb, are an integral part of a pre-existing part of the bulb, which part is fixed relative to the envelope of the bulb, so that this part performs the functions of guiding the rod supporting the movable contact, and maintaining and positioning the compression spring in the bulb. This embodiment makes it possible to obtain a reduction in the number of parts and thus a reduction in the manufacturing cost of this bulb.
On a donc réalisé grâce à l'invention une ampoule à vide permettant de résoudre les deux contraintes précédemment mentionnées tenant d'une part aux dispersions sur la longueur des tubes céramiques et d'autre part, à la présence de vibrations si les contacts ne sont pas maintenus bout à bout, tout en conservant la compacité de l'ampoule.It has therefore been realized thanks to the invention a vacuum bulb for solving the two previously mentioned constraints on the one hand to the dispersions along the length of the ceramic tubes and on the other hand, the presence of vibrations if the contacts are not not maintained end to end, while maintaining the compactness of the bulb.
L'invention permet donc de rester dans l'encombrement de l'ampoule à vide tout en ayant une pression de contact améliorée.The invention therefore makes it possible to remain in the bulk of the vacuum interrupter while having an improved contact pressure.
L'invention s'applique avantageusement mais pas exclusivement à une ampoule à vide destinée à être intégrée à un interrupteur, mais pourrait également être utilisée dans un disjoncteur en complément d'un autre dispositif de pression de contact.The invention applies advantageously but not exclusively to a vacuum interrupter intended to be integrated in a switch, but could also be used in a circuit breaker in addition to another contact pressure device.
Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.
Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant son esprit.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example.
On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.
Claims (12)
caractérisée en ce que le ressort de compression précité (11) est monté à l'intérieur de l'ampoule A autour de la tige (6), étant en appui par l'une (11 a) de ses extrémités (11 a,11 b), sur le contact d'arc mobile (5), et par son extrémité opposée (11b), sur une partie fixe (7) par rapport à l'enveloppe (1) de l'ampoule A, cette partie fixe (7) assurant le maintien et le positionnement du ressort (11) à l'intérieur de l'ampoule A.Vacuum bulb of the type comprising a cartridge elongated under vacuum, said cartridge having a cylindrical envelope closed by two funds respectively said first and second, in which are housed two arcing contacts, one fixed, is integral with one said first funds aforementioned, while the other, mobile, is mounted at the end of a rod mounted to slide axially inside the cartridge, through the other funds says second, between a first position called closed bulb in which the arcing contacts are butt and open position of the bulb in which the arcing contacts are separated, and a compression spring capable of exerting a contact pressure force on the movable arcing contact in the closed position of the arcing contacts,
characterized in that the aforesaid compression spring (11) is mounted inside the bulb A around the rod (6), being supported by one (11a) of its ends (11a, 11b). b), on the movable arc contact (5), and by its opposite end (11b), on a fixed part (7) with respect to the casing (1) of the bulb A, this fixed part (7) ) holding and positioning the spring (11) inside the bulb A.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1555674A FR3037709B1 (en) | 2015-06-22 | 2015-06-22 | VACUUM BULB AND ELECTRICAL PROTECTIVE APPARATUS COMPRISING SUCH BULB |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3109878A1 true EP3109878A1 (en) | 2016-12-28 |
EP3109878B1 EP3109878B1 (en) | 2019-10-16 |
Family
ID=54186113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16163619.6A Active EP3109878B1 (en) | 2015-06-22 | 2016-04-04 | Vacuum interrupter and electrical protection apparatus comprising such an interrupter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3109878B1 (en) |
CN (2) | CN114068236A (en) |
FR (1) | FR3037709B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109036944A (en) * | 2018-08-20 | 2018-12-18 | 厦门大恒科技有限公司 | A kind of micro vacuum contact head mechanism and vacuum contact miniature circuit breaker |
CN112614737A (en) * | 2020-12-01 | 2021-04-06 | 平高集团有限公司 | Vacuum arc extinguish chamber |
WO2021083609A1 (en) * | 2019-10-29 | 2021-05-06 | Siemens Aktiengesellschaft | Vacuum switch device for a circuit having a main and auxiliary current path |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112259409A (en) * | 2020-09-17 | 2021-01-22 | 平高集团有限公司 | Vacuum arc extinguish chamber, vacuum circuit breaker and switching-on and switching-off control method of vacuum circuit breaker |
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2015
- 2015-06-22 FR FR1555674A patent/FR3037709B1/en not_active Expired - Fee Related
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2016
- 2016-04-04 EP EP16163619.6A patent/EP3109878B1/en active Active
- 2016-05-19 CN CN202111226089.XA patent/CN114068236A/en active Pending
- 2016-05-19 CN CN201610340065.XA patent/CN106257611A/en active Pending
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JPS4312016Y1 (en) * | 1965-09-13 | 1968-05-24 | ||
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CN109036944A (en) * | 2018-08-20 | 2018-12-18 | 厦门大恒科技有限公司 | A kind of micro vacuum contact head mechanism and vacuum contact miniature circuit breaker |
CN109036944B (en) * | 2018-08-20 | 2024-04-02 | 厦门大恒科技有限公司 | Miniature vacuum contact head mechanism and vacuum contact miniature circuit breaker |
WO2021083609A1 (en) * | 2019-10-29 | 2021-05-06 | Siemens Aktiengesellschaft | Vacuum switch device for a circuit having a main and auxiliary current path |
CN112614737A (en) * | 2020-12-01 | 2021-04-06 | 平高集团有限公司 | Vacuum arc extinguish chamber |
Also Published As
Publication number | Publication date |
---|---|
CN106257611A (en) | 2016-12-28 |
EP3109878B1 (en) | 2019-10-16 |
FR3037709A1 (en) | 2016-12-23 |
FR3037709B1 (en) | 2018-05-11 |
CN114068236A (en) | 2022-02-18 |
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