EP2023361B1 - Three-phase switching device in metal casing with reduced dimensions and phase transmission forces - Google Patents

Three-phase switching device in metal casing with reduced dimensions and phase transmission forces Download PDF

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Publication number
EP2023361B1
EP2023361B1 EP08161241A EP08161241A EP2023361B1 EP 2023361 B1 EP2023361 B1 EP 2023361B1 EP 08161241 A EP08161241 A EP 08161241A EP 08161241 A EP08161241 A EP 08161241A EP 2023361 B1 EP2023361 B1 EP 2023361B1
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EP
European Patent Office
Prior art keywords
transmission
lever
control units
metal tank
connecting rod
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EP08161241A
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German (de)
French (fr)
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EP2023361A1 (en
Inventor
Johannes Blatter
Lukas Treier
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GE Grid Switzerland GmbH
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Areva T&D AG
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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
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/42—Driving mechanisms
    • 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
    • H01H33/022—Details particular to three-phase circuit breakers
    • H01H2033/024—Details particular to three-phase circuit breakers with a triangular setup of circuit breakers

Definitions

  • the invention relates to the field of metal-wrapped three-phase switching devices.
  • the invention relates to the arrangement of this type of devices and the control of the movable contacts of switches constituting the three phases.
  • FIG. 1 is a front view of the station 1 in vertical operating position on which one recognizes the single metal shell 2 filled SF6 gas surmounted a control apparatus 3.
  • This single control device 3 type integrated springs, control when switching, actuating the moving contacts of the three poles R, S, T of the circuit breaker housed in the casing 2 via a single mechanical transmission mechanism 4.
  • This single mechanical transmission mechanism 4 is connected on the one hand to the output shaft 30 of the control device 3 and on the other hand to all three movable contacts of the poles.
  • This mechanism 4 further comprises a portion 40 constituted by a system of levers and connecting rods, shown in dashed lines on the figure 1 , which is arranged externally both of the frame 31 of the control apparatus 3 and of the metal casing 2. Suitable seals seal at the point of passage of the transmission shaft 41 in the metal casing 2.
  • a station advantageously has a small footprint. In some configurations, it is necessary to switch each pole independently. In addition, it would be desirable, during switching, to reduce the mechanical forces involved in the transmission. It would also be desirable to achieve this with the minimum of parts.
  • a solution for operating the three phases independently of one another is widely known for metal-walled three-phase type devices. It consists in controlling each of the three movable switch contacts independently of the others by means of a clean control device and consequently using a own transmission mechanism.
  • the patent US 4,417,111 discloses a metal enclosed three phase circuit breaker with independent control for each moving phase contact.
  • the three identical control devices are arranged below and on the front of the metal casing.
  • Each control apparatus comprises an opening mechanism 15, a closing spring 22, a shaft rotating main 10. These elements are connected by means of levers and connecting rods.
  • the levers and links of the pole W are different from those of the poles U and V.
  • the rotary shafts 10 are each connected identically to a movable contact 4 of a circuit breaker pole.
  • the main control shaft 10 is rotated with a predefined movement stroke of less than 180 ° in a first direction of rotation.
  • the main shaft is rotated in a second predefined motion stroke of less than 180 ° in an opposite direction.
  • the implementation of this circuit breaker involves a large footprint, especially axial, and the use of a high number of parts.
  • the patent US 5,569,891 also discloses a three-phase circuit breaker with independent control for each moving phase contact but with three identical metal casings which each house a pole of the circuit breaker. As illustrated on the figure 4 of this patent, the three metal shells 3 of the same dimensions are arranged horizontally and parallel to each other.
  • the control set 30 is arranged below the support structure and comprises three identical and independent control devices, each connected to a transmission rod 32, 33, 34. These transmission rods 32, 33, 34 are each connected to a movable circuit breaker contact by means of levers 40, 41, 43 and transmission shafts 36, 37, 38, 39 arranged along a common axis.
  • This arrangement necessarily implies the use of a high number of parts due in particular to the use of three metal envelopes, the required joints.
  • the arrangement of the three controls below the support structure on the side of the pole axes and the arrangement of the transmission shafts 36, 37, 38, 39 on a common axis imply a larger space requirement.
  • the patent US 6,437,276 discloses a three-phase metal-enclosed circuit breaker with a single control for the three moving phase contacts.
  • the single control 22 is arranged on the side of the circuit breaker and is connected via a plurality of levers and links to the moving phase contacts.
  • a fork 3 distributes the control power to the three poles (see column 7, lines 9 to 28).
  • the circuit breaker must be designed with a metal enclosure per pole (see column 7, lines 31 to 41) or with a metal envelope by three poles (see column 6, lines 49-52).
  • the object of the invention is to overcome the aforementioned drawbacks and in particular to propose a solution that allows a switching device, for example of the type marketed under the name "AREVA F35", to have an independent control per pole without affecting the size of the circuit breaker.
  • Another object of the invention is to use a minimum of different parts to achieve all the independent commands of the poles.
  • the independent operation of the three breaker poles is obtained with a minimum of additional space requirement and with a minimum of different parts. and also a strong decrease in mechanical forces involved to transmit the movement to the three contacts during a switch while maintaining a small footprint.
  • the control devices can be made identically.
  • the three switches are arranged in the metal casing forming a triangle, preferably isosceles.
  • the three control units are arranged vertically above the metal casing.
  • the three control devices are parallel to each other with the three output shafts aligned along the same axis (H-H), and preferably in a row.
  • the three control devices are identical.
  • the three control devices are attached to the same platform itself fixed on the top of the metal casing.
  • one of the outer connecting rods moves in a direction opposite to the direction of the outer connecting rods of the other two phases for the same operation operation.
  • the three transmission mechanisms have identical transmission ratios if at least the relation a / b is identical for the three transmission mechanisms which regardless of the angle of rotation when switching, where a is the distance between the axis of the first link and the axis of the output shaft and b is the distance between the axis of the first link and the shaft of the transmission shaft.
  • a is identical for the three mechanisms and, b is identical for the three mechanisms, regardless of the rotation of the output shaft.
  • the three transmission mechanisms are identical.
  • a main application of the device according to the invention is that in which the three switches are three poles of circuit breaker.
  • the metal casing may comprise a cylindrical reservoir surmounted by a bell-shaped cover through which passes a part of the transmission means, sealing means being provided in the passage zone of the part of the transmission means to ensure the sealing of the dielectric gas inside the metal casing.
  • the switching device is a circuit breaker 1 comprising three poles R, S, T implanted inside a common metal shell 2 and, more particularly, inside a common tank 20 filled with a dielectric gas, for example SF6.
  • a dielectric gas for example SF6.
  • the three poles R, S, T are arranged according to an isosceles triangle, here with the distance between the poles S and R being equal to that separating the poles S and T.
  • Each pole R, S, T comprises a fixed contact and a contact mobile in translation.
  • Each movable contact is connected to one of the insulating transmission rods as detailed below. Part of the transmission rods is disposed against the upper side of the tank 20 ( figure 2 and 4 ).
  • the electrical connections 10 extend to another component (not shown) of a GIS station (Gas Insulation Substation) through insulating disks and supporting 11, being mounted waterproof.
  • GIS station Gas Insulation Substation
  • the circuit breaker 1 comprises three independent control units 3 R , 3 S , 3 T each of the other adapted each to actuate a movable contact of one of the three switches R, S, T ( Figures 2 and 3 ).
  • the three control units 3 R , 3 S , 3 T are identical, arranged in line with the metal casing 2, parallel to each other with the three output shafts 30 R , 30 S , 30 T , aligned along the same axis (HH) and in a row ( figure 3 ).
  • each of the control devices 3 R , 3 S , 3 T is housed in an independent frame 31 R , 31 S , 31 T and the three devices 3 R , 3 S , 3 T are attached to the same platform 5 it even attached to the top 21 of the metal casing 2.
  • Each control is usually equipped with several levers able to be rotated by means of an energy stored in springs, such as for example a closing spring and a trigger spring, which are normally solicited.
  • springs such as for example a closing spring and a trigger spring, which are normally solicited.
  • the function of such commands is known and has been described for example in the patent EP 0 651 409 .
  • Other types of commands can be used with similar principles for transmission operations.
  • the circuit breaker 1 comprises three mechanical 4 R , 4 S , 4 T transmission mechanisms each connected on the one hand to the output shaft 30 R , 30 S , 30 T of one of the three control devices and secondly to the moving contact of one of the three switches R, S, T ( figure 2 ).
  • the three transmission mechanisms 4 R , 4 S , 4 T have different geometries between them but identical speed ratios between them whatever the angle of rotation during a switch.
  • the three mechanical transmission mechanisms 4 R , 4 S , 4 T each comprise a first lever 42 R , 42 S , 42 T fixed transversely to the output shaft 30 R , 30 S , 30 T one of the three control devices ( figure 3 ).
  • transmission shaft 41 R , 41 S , 41 T respectively for each pole R, S, T, different from the output shaft 30 R , 30 S , 30 T.
  • These transmission shafts 41 R , 41 S , 41 T are not all arranged on the same side of the plane defined by the axis of the R and T poles.
  • first connecting rod 43 R , 43 S , 43 T is pivotally mounted at the free end of the first lever 42 R , 42 S , 42 T.
  • a second lever 44 R , 44 S , 44 T is attached to one end of a transmission shaft 41 R , 41 S , 41 T rotatably mounted in a cover 21 of the metal casing 2 and is rotatably mounted to the other end of the first connecting rod 43 R , 43 S , 43 T.
  • the geometry of the three mechanical transmission mechanisms 4 R , 4 S , 4 T is such that the intermediate position of the axis of the connecting rod 43 S , is not parallel to the other 43 R , 43 T.
  • a third lever 45 R , 45 S , 45 T is fixed at the other end of the transmission shaft 41 R , 41 S , 41 T and is pivotally mounted at one end of a second connecting rod 46 R , 46 S , 46 T connected to the end of a movable switch contact.
  • the second connecting rod 46 R , 46 S , 46 T is made of an insulating material, for example epoxy laminated to glass fibers.
  • the transmission mechanisms 4 R , 4 S , 4 T are arranged so that on the one hand the first levers 42 R , 42 S , 42 T , the first connecting rods 43 R , 43 S , 43 T and the second levers 44 R , 44 S , 44 T are arranged outside the metal casing 2 and secondly the third levers 45 R , 45 S , 45 T and the second rods 46 R , 46 S , 46 T are arranged inside the metal casing 2.
  • the three transmission mechanisms 4 R , 4 S , 4 T are composed of identical elements, with the exception of the length the rod 43 S which is longer than the rods 43 R , 43 T.
  • the first outer connecting rods 43 R , 43 T extend approximately in a plane formed by the poles R and T and laterally with respect to the upper part forming a cover 21 of the metal casing 2.
  • the first main rod 43 S extends outside this plane and is inclined with respect to the axis of the pole S; the inclination being such that it extends to the rear of the lid 21.
  • the angle ⁇ of this inclination can vary from 10 to 40 ° relative to the axis of the pole S during a commutation ( figure 5 ).
  • the distance a between the axis of the first connecting rod 43 R , 43 S , 43 T and the axis of the output shaft 30 R , 30 S , T is identical for the three mechanisms 4 R , 4 S , 4 T.
  • the distance b between the axis of the first connecting rod 43 R , 43 S , 43 T and the axis of the transmission shaft 41 R , 41 S , 41 T is identical for the three mechanisms, regardless of the rotation of the output shaft 30 R , 30 S , 30 T.
  • the three output shafts 30 R , 30 S , 30 T rotate in the same direction of rotation.
  • the first outer connecting rods 43 R , 43 T undergo a thrust force, while the first connecting rod 43 S undergoes a pulling force.
  • the three second links 46 R , 46 S , 46 T undergo a thrust force.
  • the first outer links 43 R , 43 T undergo a pulling force while the first link 43 S undergoes a thrust force.
  • one of the outer rods 43 S moves in a direction opposite to the direction of the outer rods 43 R , 43 T of the two other poles R, T for the same operation operation.
  • the three second links 46 R , 46 S , 46 T undergo a pulling force.
  • This type of force reversal between the outer links 43 R , 43 T and the central rod 43 S is due to the mounting position of the first lever 42 S , the first central rod 43 S , the second lever 44 S and the third lever 45 S relative to the position of mounting the same elements of the other two phases. ( figures 4 , 5 and 6 ).
  • the third central lever 45 s is identical to the second 44 s , these two levers being arranged relative to each other at an angle ⁇ of the order of 180 ° on the shaft transmission time 41 s .
  • This angle ⁇ may advantageously be between 140 ° and 220 ° according to the invention.
  • the second outer 44 R , 44 T and third lever 45 R , 45 T are arranged relative to each other at a zero angle on their respective transmission shaft 41 R , 41 T. ( figures 4 and 6 ).
  • This angle can advantageously be between -40 ° and + 40 ° according to the invention.
  • the length of the set of first levers 42 R , 42 S , 42 T ( figures 4 , 5 ) is identical, that of the levers 44 R , 44 S , 44 T , 45 R , 45 S , 45 T is identical ( figure 6 ).
  • the length of the second levers 44 R , 44 S , 44 T identical to each other could be different from that of the third levers 45 R , 45 S , 45 T identical to each other.
  • the first links 43 R , 43 S , 43 T are each slightly inclined relative to the plane in which respectively extend each of the first levers 42 R , 42 S , 42 T. These inclinations, which may be different from one of the first links 43 R , 43 S , 43 T to another, have no significant influence on the defined movement path. By cons, they still optimize the space taken by the circuit breaker according to the invention.
  • the metal casing 2 comprises a cylindrical reservoir 20 surmounted by a lid 21 forming a bell ( figures 6 and 2 ) through which passes the transmission shaft 41 R , 41 S , 41 T , sealing means being provided in the passage zone of the portion of the transmission means to seal the dielectric gas inside of the metal shell 2 ( figure 6 ).
  • first links 43 R , 43 T may extend outside the plane formed by the poles R and T: the angular position of the first levers on their respective output shaft must then be adapted to respect the ratios of identical speeds between the three mechanical transmission mechanisms.
  • first levers and the second and third levers may have different lengths.
  • the distance a between the axis of each of the first rods and that of their respective output shaft must always be identical for the three mechanisms.
  • the distance b between the axis of the first connecting rod and the axis of the transmission shaft and that of b as a function of the rotation of the respective output shaft must be the same for the three transmission mechanisms. .
  • the first levers 42 R , 42 S , 42 T of the different poles and also the second levers 44 R , 44 S , 44 T may have different lengths.
  • at least the relation a / b must be the same for the three poles whatever the angle of rotation during a commutation.

Abstract

The device (1) has a sulfur hexafluoride gas filled metallic casing (2) accommodating three switches i.e. poles (R, S, T), and independent control apparatuses (3R, 3S, 3T) respectively activating movable contacts of the poles. Three mechanical transmission mechanisms (4R, 4S, 4T) are respectively connected to outlet shafts (30R, 30S, 30T) of the apparatuses and the movable contacts, where the apparatuses are placed at exterior and above of the casing. The mechanisms have different geometries and identical speed ratios irrespective of transmission instants during switching.

Description

DOMAINE TECHNIQUE ET ART ANTÉRIEURTECHNICAL FIELD AND PRIOR ART

L'invention concerne le domaine des dispositifs de commutation de type à trois phases sous enveloppe métallique.The invention relates to the field of metal-wrapped three-phase switching devices.

En particulier, l'invention concerne l'agencement de ce type de dispositifs et de la commande des contacts mobiles d'interrupteurs constituant les trois phases.In particular, the invention relates to the arrangement of this type of devices and the control of the movable contacts of switches constituting the three phases.

La demanderesse a déjà développé nombre de ce type de dispositifs. On peut citer ici le poste blindé commercialisé sous la dénomination « AREVA F35 » tel que représenté schématiquement sur la figure 1. Cette figure 1 est une vue de face du poste 1 en position verticale de fonctionnement sur laquelle on reconnaît l'enveloppe métallique unique 2 remplie de gaz SF6 surmonté un appareil de commande 3. Cet appareil de commande unique 3 de type à ressorts intégrés, commande, lors d'une commutation, l'actionnement des contacts mobiles des trois pôles R, S, T du disjoncteur logés dans l'enveloppe 2 par l'intermédiaire d'un mécanisme de transmission mécanique 4 unique. Ce mécanisme de transmission mécanique 4 unique est relié d'une part à l'arbre de sortie 30 de l'appareil de commande 3 et d'autre part à l'ensemble des trois contacts mobiles des pôles. Ce mécanisme 4 comprend en outre une partie 40 constituée par un système de leviers et de bielles, représenté en pointillés sur la figure 1, qui est agencé à l'extérieur à la fois du bâti 31 de l'appareil de commande 3 et de l'enveloppe métallique 2. Des joints appropriés assurent l'étanchéité à l'endroit de passage de l'arbre de transmission 41 dans l'enveloppe métallique 2. Un tel poste présente avantageusement un encombrement peu important. Dans certaines configurations, il est nécessaire de commuter chaque pôle indépendamment. En outre, il serait souhaitable, lors d'une commutation, de réduire les forces mécaniques en jeu dans la transmission. Il serait également souhaitable de réaliser cela avec le minimum de pièces.The Applicant has already developed many of this type of devices. We can mention here the armored station marketed under the name "AREVA F35" as shown schematically on the figure 1 . This figure 1 is a front view of the station 1 in vertical operating position on which one recognizes the single metal shell 2 filled SF6 gas surmounted a control apparatus 3. This single control device 3 type integrated springs, control, when switching, actuating the moving contacts of the three poles R, S, T of the circuit breaker housed in the casing 2 via a single mechanical transmission mechanism 4. This single mechanical transmission mechanism 4 is connected on the one hand to the output shaft 30 of the control device 3 and on the other hand to all three movable contacts of the poles. This mechanism 4 further comprises a portion 40 constituted by a system of levers and connecting rods, shown in dashed lines on the figure 1 , which is arranged externally both of the frame 31 of the control apparatus 3 and of the metal casing 2. Suitable seals seal at the point of passage of the transmission shaft 41 in the metal casing 2. Such a station advantageously has a small footprint. In some configurations, it is necessary to switch each pole independently. In addition, it would be desirable, during switching, to reduce the mechanical forces involved in the transmission. It would also be desirable to achieve this with the minimum of parts.

Une solution pour opérer les trois phases indépendamment l'une de l'autre est largement connue pour les dispositifs de type à trois phases sous enveloppe métallique. Elle consiste à commander chacun des trois contacts mobiles d'interrupteur indépendamment des autres au moyen d'un appareil de commande propre et d'utiliser en conséquence un mécanisme de transmission propre.A solution for operating the three phases independently of one another is widely known for metal-walled three-phase type devices. It consists in controlling each of the three movable switch contacts independently of the others by means of a clean control device and consequently using a own transmission mechanism.

Le brevet US 4 417 111 décrit un disjoncteur à trois phases sous enveloppe métallique avec une commande indépendante pour chaque contact mobile de phase. Dans le mode de réalisation illustré, les trois appareils de commande identiques sont agencés en dessous et sur l'avant de l'enveloppe métallique. Chaque appareil de commande comprend un mécanisme d'ouverture 15, un ressort de fermeture 22, un arbre principal rotatif 10. Ces éléments sont connectés au moyen de leviers et de bielles. Les leviers et bielles du pôle W sont différents de ceux des pôles U et V. Les arbres rotatifs 10 sont reliés chacun identiquement à un contact mobile 4 d'un pôle de disjoncteur. Pour une opération de fermeture du disjoncteur, l'arbre principal de commande 10 est tourné avec une course de mouvement prédéfinie de moins de 180° dans une première direction de rotation. Pour une opération de déclenchement du disjoncteur, l'arbre principal est tourné dans une seconde course de mouvement prédéfinie de moins de 180° dans une direction opposée. La mise en oeuvre de ce disjoncteur implique un encombrement important, notamment axial, et l'utilisation d'un nombre de pièces élevé.The patent US 4,417,111 discloses a metal enclosed three phase circuit breaker with independent control for each moving phase contact. In the illustrated embodiment, the three identical control devices are arranged below and on the front of the metal casing. Each control apparatus comprises an opening mechanism 15, a closing spring 22, a shaft rotating main 10. These elements are connected by means of levers and connecting rods. The levers and links of the pole W are different from those of the poles U and V. The rotary shafts 10 are each connected identically to a movable contact 4 of a circuit breaker pole. For a closing operation of the circuit breaker, the main control shaft 10 is rotated with a predefined movement stroke of less than 180 ° in a first direction of rotation. For a trip operation of the circuit breaker, the main shaft is rotated in a second predefined motion stroke of less than 180 ° in an opposite direction. The implementation of this circuit breaker involves a large footprint, especially axial, and the use of a high number of parts.

Le brevet US 5 569 891 divulgue également un disjoncteur à trois phases avec une commande indépendante pour chaque contact mobile de phase mais avec trois enveloppes métalliques identiques qui logent chacune un pôle du disjoncteur. Comme illustré sur la figure 4 de ce brevet, les trois enveloppes métalliques 3 de mêmes dimensions sont disposées à l'horizontal et parallèles entre elles. Le jeu de commande 30 est disposé en dessous de la structure support et comprend trois appareils de commande identiques et indépendants, reliés chacun à une bielle de transmission 32, 33, 34. Ces bielles de transmission 32, 33, 34 sont reliées chacune à un contact mobile de disjoncteur au moyen de leviers 40, 41, 43 et d'arbres de transmission 36, 37, 38, 39 agencés selon un axe commun. Cet agencement implique nécessairement l'utilisation d'un nombre de pièces élevé du fait notamment de l'utilisation de trois enveloppes métalliques, des joints requis. L'agencement des trois commandes en dessous de la structure support du côté des axes de pole et l'agencement des arbres de transmission 36, 37, 38, 39 sur un axe commun impliquent un encombrement nécessaire plus important.The patent US 5,569,891 also discloses a three-phase circuit breaker with independent control for each moving phase contact but with three identical metal casings which each house a pole of the circuit breaker. As illustrated on the figure 4 of this patent, the three metal shells 3 of the same dimensions are arranged horizontally and parallel to each other. The control set 30 is arranged below the support structure and comprises three identical and independent control devices, each connected to a transmission rod 32, 33, 34. These transmission rods 32, 33, 34 are each connected to a movable circuit breaker contact by means of levers 40, 41, 43 and transmission shafts 36, 37, 38, 39 arranged along a common axis. This arrangement necessarily implies the use of a high number of parts due in particular to the use of three metal envelopes, the required joints. The arrangement of the three controls below the support structure on the side of the pole axes and the arrangement of the transmission shafts 36, 37, 38, 39 on a common axis imply a larger space requirement.

Le brevet US 6 437 276 divulgue un disjoncteur à trois phases sous enveloppe métallique avec une seule commande pour les trois contacts mobiles de phase. Tel que décrit en colonne 6, lignes 18 à 47, la commande unique 22 est agencée sur le côté du disjoncteur et est reliée par l'intermédiaire de plusieurs leviers et bielles aux contacts mobiles de phase. Une fourche 3 distribue la puissance de commande aux trois pôles (voir colonne 7, lignes 9 à 28). Pour avoir une commande indépendante par pôle, le disjoncteur doit être conçu avec une enveloppe métallique par pôle (voir colonne 7, lignes 31 à 41) ou avec une enveloppe métallique par trois pôles (voir colonne 6, lignes 49-52).The patent US 6,437,276 discloses a three-phase metal-enclosed circuit breaker with a single control for the three moving phase contacts. As described in column 6, lines 18 to 47, the single control 22 is arranged on the side of the circuit breaker and is connected via a plurality of levers and links to the moving phase contacts. A fork 3 distributes the control power to the three poles (see column 7, lines 9 to 28). To have independent control per pole, the circuit breaker must be designed with a metal enclosure per pole (see column 7, lines 31 to 41) or with a metal envelope by three poles (see column 6, lines 49-52).

EXPOSÉ DE L'INVENTIONSTATEMENT OF THE INVENTION

Le but de l'invention est de pallier les inconvénients précités et notamment, de proposer une solution qui permette à un dispositif de commutation, par exemple du type de celui commercialisé sous la dénomination «AREVA F35 », d'avoir une commande indépendante par pôle sans nuire à l'encombrement du disjoncteur.The object of the invention is to overcome the aforementioned drawbacks and in particular to propose a solution that allows a switching device, for example of the type marketed under the name "AREVA F35", to have an independent control per pole without affecting the size of the circuit breaker.

Un autre but de l'invention est d'utiliser un minimum de différentes pièces pour réaliser l'ensemble des commandes indépendantes des pôles.Another object of the invention is to use a minimum of different parts to achieve all the independent commands of the poles.

A cet effet, l'invention concerne un dispositif de commutation à haute ou moyenne tension de type à trois phases et sous enveloppe métallique, comprenant :

  • une enveloppe métallique remplie d'un gaz et abritant trois interrupteurs dont un par phase,
  • trois appareils de commande indépendants l'un de l'autre adaptés chacun pour actionner un contact mobile de l'un des trois interrupteurs,
  • trois mécanismes de transmission mécanique reliés chacun d'une part à l'arbre de sortie d'un des trois appareils de commande et d'autre part au contact mobile d'un des trois interrupteurs, dispositif dans lequel les trois appareils de commande sont agencés à l'extérieur et au-dessus de l'enveloppe métallique et dans lequel les trois mécanismes de transmission ont une géométrie différente l'un de l'autre mais des rapports de vitesse identiques entre eux quel que soit l'instant de transmission lors d'une commutation.
For this purpose, the invention relates to a three-phase and metal-enclosed type high or medium voltage switching device comprising:
  • a metal shell filled with a gas and housing three switches, one per phase,
  • three independent control apparatuses each adapted to actuate a movable contact of one of the three switches,
  • three mechanical transmission mechanisms each connected on the one hand to the output shaft of one of the three control devices and on the other hand to the movable contact of one of the three switches, in which device the three control devices are arranged outside and above the metal casing and in which the three transmission mechanisms have a different geometry from one another but identical speed ratios between them regardless of the moment of transmission when switching.

Le terme « au-dessus » pour désigner le positionnement des appareils de commande par rapport à l'enveloppe métallique est à comprendre lorsque le disjoncteur selon l'invention est en position de fonctionnement, c'est-à-dire avec l'enveloppe installée à la verticale. On peut comprendre que par exemple un montage horizontal de tout l'équipement est bien possible.The term "above" to designate the positioning of the control apparatus with respect to the metal casing is to be understood when the circuit breaker according to the invention is in the operating position, that is to say with the installed casing vertically. It can be understood that for example a horizontal assembly of all equipment is possible.

Avec la solution selon l'invention, par rapport à un dispositif du type de celui commercialisé sous la dénomination « AREVA F35 », on obtient l'opération indépendante des trois pôles disjoncteur ave un minimum d'encombrement additionnel et avec un minimum de différents pièces, et aussi une forte diminution des forces mécaniques en jeu pour transmettre le mouvement aux trois contacts lors d'une commutation tout en conservant un encombrement peu important. En outre, en définissant des mécanismes de transmission aux rapports de transmission identiques entre eux, les appareils de commande peuvent être réalisés à l'identique.With the solution according to the invention, compared to a device of the type marketed under the name "AREVA F35", the independent operation of the three breaker poles is obtained with a minimum of additional space requirement and with a minimum of different parts. and also a strong decrease in mechanical forces involved to transmit the movement to the three contacts during a switch while maintaining a small footprint. In addition, by defining transmission mechanisms to the transmission ratios identical to each other, the control devices can be made identically.

Selon une configuration avantageuse de l'invention, les trois interrupteurs sont agencés dans l'enveloppe métallique en formant un triangle, de préférence isocèle.According to an advantageous configuration of the invention, the three switches are arranged in the metal casing forming a triangle, preferably isosceles.

Pour réduire encore l'encombrement les trois appareils de commande sont agencés à l'aplomb de l'enveloppe métallique.To further reduce the size, the three control units are arranged vertically above the metal casing.

Avantageusement, les trois appareils de commande sont parallèles entre eux avec les trois arbres de sortie alignés selon un même axe (H-H), et de préférence selon une rangée.Advantageously, the three control devices are parallel to each other with the three output shafts aligned along the same axis (H-H), and preferably in a row.

Selon un mode de réalisation avantageux, les trois appareils de commande sont identiques.According to an advantageous embodiment, the three control devices are identical.

De préférence, les trois appareils de commande sont fixés à une même plate-forme elle-même fixée sur le dessus de l'enveloppe métallique.Preferably, the three control devices are attached to the same platform itself fixed on the top of the metal casing.

Selon un mode de construction avantageux, au moins un des trois mécanismes de transmission mécanique comprend :

  • un premier levier fixé transversalement à l'arbre de sortie de l'un des trois appareils de commande,
  • une première bielle dont une extrémité est montée pivotante à l'extrémité libre du premier levier,
  • un deuxième levier fixé à une extrémité d'un arbre de transmission monté pivotant dans une partie supérieure de l'enveloppe métallique et monté en rotation à l'autre extrémité de la première bielle,
  • un troisième levier fixé à l'autre extrémité de l'arbre de transmission et monté pivotant à une extrémité d'une deuxième bielle isolante ou à celle d'un contact mobile d'interrupteur, le mécanisme de transmission étant agencés de sorte que d'une part le premier levier, la première bielle, le deuxième levier sont disposés à l'extérieur de l'enveloppe métallique et d'autre part le troisième levier et le cas échéant la deuxième bielle est (sont) disposée(s) à l'intérieur de l'enveloppe métallique.
According to an advantageous embodiment, at least one of the three mechanical transmission mechanisms comprises:
  • a first lever fixed transversely to the output shaft of one of the three control devices,
  • a first connecting rod whose end is pivotally mounted at the free end of the first lever,
  • a second lever attached to one end of a transmission shaft pivotally mounted in an upper part of the metal casing and rotatably mounted at the other end of the first rod,
  • a third lever attached to the other end of the transmission shaft and pivotally mounted at one end of a second insulating link or that of a movable switch contact, the transmission mechanism being arranged so that firstly the first lever, the first link, the second lever are arranged outside the metal casing and secondly the third lever and if necessary the second link is (are) arranged (s) to the inside the metal casing.

De préférence, une des bielles extérieures se déplace dans une direction opposée à la direction des bielles extérieures des deux autres phases pour une même opération de fonctionnement.Preferably, one of the outer connecting rods moves in a direction opposite to the direction of the outer connecting rods of the other two phases for the same operation operation.

Selon ce mode de construction avantageux, les trois mécanisme de transmission ont des rapports de transmission identique si au moins la relation a/b est identique pour les trois mécanisme de transmission quel que soit l'angle de rotation lors d'une commutation, a étant la distance entre l'axe de la première bielle et l'axe de l'arbre de sortie et b étant la distance entre l'axe de la première bielle et l'axe de l'arbre de transmission.According to this advantageous mode of construction, the three transmission mechanisms have identical transmission ratios if at least the relation a / b is identical for the three transmission mechanisms which regardless of the angle of rotation when switching, where a is the distance between the axis of the first link and the axis of the output shaft and b is the distance between the axis of the first link and the shaft of the transmission shaft.

De préférence, a est identique pour les trois mécanismes et, b est identique pour les trois mécanismes, quelle que soit la rotation de l'arbre de sortie. Avantageusement, les trois mécanismes de transmission sont identiques.Preferably, a is identical for the three mechanisms and, b is identical for the three mechanisms, regardless of the rotation of the output shaft. Advantageously, the three transmission mechanisms are identical.

Une application principale du dispositif selon l'invention est celle dans laquelle les trois interrupteurs sont trois pôles de disjoncteur.A main application of the device according to the invention is that in which the three switches are three poles of circuit breaker.

L'enveloppe métallique peut comprendre un réservoir cylindrique surmonté d'un couvercle formant cloche à travers lequel passe une partie des moyens de transmission, des moyens d'étanchéité étant prévus dans la zone de passage de la partie des moyens de transmission pour assurer l'étanchéité du gaz diélectrique à l'intérieur de l'enveloppe métallique.The metal casing may comprise a cylindrical reservoir surmounted by a bell-shaped cover through which passes a part of the transmission means, sealing means being provided in the passage zone of the part of the transmission means to ensure the sealing of the dielectric gas inside the metal casing.

BRÈVE DESCRIPTION DES DESSINSBRIEF 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 dans lesquelles :

  • la figure 1 est une vue générale de face d'un disjoncteur d'un poste blindé de type « AREVA F35 » selon l'état de l'art,
  • la figure 2 est une vue générale de face d'un dispositif de commutation selon un mode de réalisation de l'invention,
  • la figure 3 est une vue de dessus du dispositif de commutation selon la figure 2,
  • la figure 4 est une vue en coupe selon A-A de la figure 2,
  • la figure 5 est une vue en coupe selon B-B de la figure 2,
  • la figure 6 est une vue en coupe selon C-C de la figure 2.
Other advantages and characteristics of the invention will emerge more clearly on reading the detailed description given with reference to the following figures in which:
  • the figure 1 is a general front view of a circuit breaker of a "AREVA F35" type armored substation according to the state of the art,
  • the figure 2 is a front view of a switching device according to one embodiment of the invention,
  • the figure 3 is a top view of the switching device according to the figure 2 ,
  • the figure 4 is a sectional view according to AA of the figure 2 ,
  • the figure 5 is a sectional view along BB of the figure 2 ,
  • the figure 6 is a sectional view according to CC of the figure 2 .

EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERSDETAILED PRESENTATION OF PARTICULAR EMBODIMENTS

Le dispositif de commutation selon un mode de réalisation illustré aux figures 2 à 6 est un disjoncteur 1 comprenant trois pôles R, S, T implantés à l'intérieur d'une enveloppe métallique 2 commune et, plus particulièrement à l'intérieur d'un réservoir commun 20 rempli d'un gaz diélectrique par exemple du SF6.The switching device according to an embodiment illustrated in FIGS. Figures 2 to 6 is a circuit breaker 1 comprising three poles R, S, T implanted inside a common metal shell 2 and, more particularly, inside a common tank 20 filled with a dielectric gas, for example SF6.

Les trois pôles R, S, T sont agencés selon un triangle isocèle, ici avec la distance entre les pôles S et R étant égale à celle séparant les pôles S et T. Chaque pôle R, S, T comprend un contact fixe et un contact mobile en translation. Chaque contact mobile est relié à une des bielles de transmission isolantes comme détaillé ci-après. Une partie des bielles de transmission est disposée contre le côté supérieur du réservoir 20 (figure 2 et 4).The three poles R, S, T are arranged according to an isosceles triangle, here with the distance between the poles S and R being equal to that separating the poles S and T. Each pole R, S, T comprises a fixed contact and a contact mobile in translation. Each movable contact is connected to one of the insulating transmission rods as detailed below. Part of the transmission rods is disposed against the upper side of the tank 20 ( figure 2 and 4 ).

Les connexions électriques 10 s'étendent vers un autre composant (non montré) d'un poste GIS (Gas Insulation Substation) à travers des disques isolants et supportant 11, en étant montées étanches.The electrical connections 10 extend to another component (not shown) of a GIS station (Gas Insulation Substation) through insulating disks and supporting 11, being mounted waterproof.

Le disjoncteur 1 comprend trois appareils de commande indépendants 3R, 3S, 3T l'un de l'autre adaptés chacun pour actionner un contact mobile de l'un des trois interrupteurs R, S, T (figures 2 et 3).The circuit breaker 1 comprises three independent control units 3 R , 3 S , 3 T each of the other adapted each to actuate a movable contact of one of the three switches R, S, T ( Figures 2 and 3 ).

Dans le mode de réalisation représenté, les trois appareils de commande 3R, 3S, 3T sont identiques, agencés à l'aplomb de l'enveloppe métallique 2, parallèles entre eux avec les trois arbres de sortie 30R, 30S, 30T, alignés selon un même axe (H-H) et selon une rangée (figure 3). De préférence, et tel que représenté à la figure 2, chacun des appareils de commande 3R, 3S, 3T est logé dans un bâti indépendant 31R, 31S, 31T et les trois appareils 3R, 3S, 3T sont fixés à une même plate-forme 5 elle-même fixée sur le dessus 21 de l'enveloppe métallique 2.In the embodiment shown, the three control units 3 R , 3 S , 3 T are identical, arranged in line with the metal casing 2, parallel to each other with the three output shafts 30 R , 30 S , 30 T , aligned along the same axis (HH) and in a row ( figure 3 ). Preferably, and as represented in figure 2 , each of the control devices 3 R , 3 S , 3 T is housed in an independent frame 31 R , 31 S , 31 T and the three devices 3 R , 3 S , 3 T are attached to the same platform 5 it even attached to the top 21 of the metal casing 2.

Chaque commande est équipée de manière usuelle de plusieurs leviers aptes à être mis en rotation au moyen d'une énergie emmagasinée dans des ressorts, comme par exemple un ressort de fermeture et un ressort de déclenchement, qui sont normalement sollicités. La fonction de telles commandes est connue et a été décrite par exemple dans le brevet EP 0 651 409 . D'autres types de commande peuvent être utilisés avec des principes similaires pour les opérations de transmission.Each control is usually equipped with several levers able to be rotated by means of an energy stored in springs, such as for example a closing spring and a trigger spring, which are normally solicited. The function of such commands is known and has been described for example in the patent EP 0 651 409 . Other types of commands can be used with similar principles for transmission operations.

Le disjoncteur 1 comprend trois mécanismes de transmission 4R, 4S, 4T mécanique reliés chacun d'une part à l'arbre de sortie 30R, 30S, 30T d'un des trois appareils de commande et d'autre part au contact mobile d'un des trois interrupteurs R, S, T (figure 2).The circuit breaker 1 comprises three mechanical 4 R , 4 S , 4 T transmission mechanisms each connected on the one hand to the output shaft 30 R , 30 S , 30 T of one of the three control devices and secondly to the moving contact of one of the three switches R, S, T ( figure 2 ).

Selon l'invention, les trois mécanismes de transmission 4R, 4S, 4T ont des géométries différentes entre eux mais des rapports de vitesse identiques entre eux quel que soit l'angle de rotation lors d'une commutation.According to the invention, the three transmission mechanisms 4 R , 4 S , 4 T have different geometries between them but identical speed ratios between them whatever the angle of rotation during a switch.

Dans le mode de réalisation représenté, les trois mécanismes de transmission mécanique 4R, 4S, 4T comprennent chacun un premier levier 42R, 42S, 42T fixé transversalement à l'arbre de sortie 30R, 30S, 30T de l'un des trois appareils de commande (figure 3).In the embodiment shown, the three mechanical transmission mechanisms 4 R , 4 S , 4 T each comprise a first lever 42 R , 42 S , 42 T fixed transversely to the output shaft 30 R , 30 S , 30 T one of the three control devices ( figure 3 ).

Il y a un arbre de transmission 41R, 41S, 41T respectivement pour chaque pôle R, S, T, différent de l'arbre de sortie 30R, 30S, 30T. Ces arbre de transmission 41R, 41S, 41T ne sont pas tous agencés du même côté du plan défini par l'axe des pôles R et T.There is a transmission shaft 41 R , 41 S , 41 T respectively for each pole R, S, T, different from the output shaft 30 R , 30 S , 30 T. These transmission shafts 41 R , 41 S , 41 T are not all arranged on the same side of the plane defined by the axis of the R and T poles.

Tel qu'illustré aux figures 4 et 5, une extrémité d'une première bielle 43R, 43S, 43T est montée pivotante à l'extrémité libre du premier levier 42R, 42S, 42T. Un deuxième levier 44R, 44S, 44T est fixé à une extrémité d'un arbre de transmission 41R, 41S, 41T monté en rotation dans un couvercle 21 de l'enveloppe métallique 2 et est monté en rotation à l'autre extrémité de la première bielle 43R, 43S, 43T.As illustrated in figures 4 and 5 one end of a first connecting rod 43 R , 43 S , 43 T is pivotally mounted at the free end of the first lever 42 R , 42 S , 42 T. A second lever 44 R , 44 S , 44 T is attached to one end of a transmission shaft 41 R , 41 S , 41 T rotatably mounted in a cover 21 of the metal casing 2 and is rotatably mounted to the other end of the first connecting rod 43 R , 43 S , 43 T.

Tel qu'illustré sur la figure 4, la géométrie des trois mécanismes de transmission mécanique 4R, 4S, 4T est telle que la position intermédiaire de l'axe de la bielle 43S, n'est pas parallèle aux autres 43R, 43T.As illustrated on the figure 4 , the geometry of the three mechanical transmission mechanisms 4 R , 4 S , 4 T is such that the intermediate position of the axis of the connecting rod 43 S , is not parallel to the other 43 R , 43 T.

Tel qu'illustré à la figure 6, un troisième levier 45R, 45S, 45T est fixé à l'autre extrémité de l'arbre de transmission 41R, 41S, 41T et est monté pivotant à une extrémité d'une deuxième bielle 46R, 46S, 46T reliée à l'extrémité d'un contact mobile d'interrupteur. La deuxième bielle 46R, 46S, 46T est faite en une matière isolante, par exemple de l'époxy stratifié aux fibres de verres.As illustrated in figure 6 a third lever 45 R , 45 S , 45 T is fixed at the other end of the transmission shaft 41 R , 41 S , 41 T and is pivotally mounted at one end of a second connecting rod 46 R , 46 S , 46 T connected to the end of a movable switch contact. The second connecting rod 46 R , 46 S , 46 T is made of an insulating material, for example epoxy laminated to glass fibers.

Selon le mode de réalisation illustré, les mécanismes de transmission 4R, 4S, 4T sont agencés de sorte que d'une part les premiers leviers 42R, 42S, 42T, les premières bielles 43R, 43S, 43T et les deuxièmes leviers 44R, 44S, 44T sont disposés à l'extérieur de l'enveloppe métallique 2 et d'autre part les troisièmes leviers 45R, 45S, 45T et les deuxièmes bielles 46R, 46S, 46T sont disposées à l'intérieur de l'enveloppe métallique 2. Avantageusement et tel qu'illustré, les trois mécanismes de transmission 4R, 4S, 4T sont composés d'éléments identiques, à l'exception de la longueur de la bielle 43S qui est plus longue que les bielles 43R, 43T.According to the illustrated embodiment, the transmission mechanisms 4 R , 4 S , 4 T are arranged so that on the one hand the first levers 42 R , 42 S , 42 T , the first connecting rods 43 R , 43 S , 43 T and the second levers 44 R , 44 S , 44 T are arranged outside the metal casing 2 and secondly the third levers 45 R , 45 S , 45 T and the second rods 46 R , 46 S , 46 T are arranged inside the metal casing 2. Advantageously and as illustrated, the three transmission mechanisms 4 R , 4 S , 4 T are composed of identical elements, with the exception of the length the rod 43 S which is longer than the rods 43 R , 43 T.

Les premières bielles extérieures 43R, 43T s'étendent approximativement dans un plan formé par les pôles R et T et latéralement par rapport à la partie supérieure formant couvercle 21 de l'enveloppe métallique 2. La première bielle 43S centrale s'étend à l'extérieur de ce plan et est inclinée par rapport à l'axe du pôle S ; l'inclinaison étant telle qu'elle s'étend à l'arrière du couvercle 21. Selon l'invention, l'angle θ de cette inclinaison peut varier de 10 à 40° par rapport à l'axe du pôle S lors d'une commutation (figure 5).The first outer connecting rods 43 R , 43 T extend approximately in a plane formed by the poles R and T and laterally with respect to the upper part forming a cover 21 of the metal casing 2. The first main rod 43 S extends outside this plane and is inclined with respect to the axis of the pole S; the inclination being such that it extends to the rear of the lid 21. According to the invention, the angle θ of this inclination can vary from 10 to 40 ° relative to the axis of the pole S during a commutation ( figure 5 ).

Comme montré aux figures 4 et 5, la distance a entre l'axe de la première bielle 43R, 43S, 43T et l'axe de l'arbre de sortie 30R, 30S, 30T est identique pour les trois mécanismes 4R, 4S, 4T. La distance b entre l'axe de la première bielle 43R, 43S, 43T et l'axe de l'arbre de transmission 41R, 41S, 41T est identique pour les trois mécanismes, quelle que soit la rotation de l'arbre de sortie 30R, 30S, 30T.As shown in figures 4 and 5 the distance a between the axis of the first connecting rod 43 R , 43 S , 43 T and the axis of the output shaft 30 R , 30 S , T is identical for the three mechanisms 4 R , 4 S , 4 T. The distance b between the axis of the first connecting rod 43 R , 43 S , 43 T and the axis of the transmission shaft 41 R , 41 S , 41 T is identical for the three mechanisms, regardless of the rotation of the output shaft 30 R , 30 S , 30 T.

Dans le mode de réalisation illustré, les trois arbres de sortie 30R, 30S, 30T tournent dans le même sens de rotation. Pendant une opération de fermeture, les premières bielles extérieures 43R, 43T subissent une force de poussée, tandis que la première bielle 43S subit une force de tirée. Les trois deuxièmes bielles 46R, 46S, 46T subissent une force de poussée. Inversement, pendant une opération d'ouverture ou déclenchement, les premières bielles extérieures 43R, 43T subissent une force de tirée tandis que la première bielle 43S subit une force de poussée. En d'autres termes, une des bielles extérieures 43S se déplace dans une direction opposée à la direction des bielles extérieures 43R, 43T des deux autres pôles R, T pour une même opération de fonctionnement. Les trois deuxièmes bielles 46R, 46S, 46T subissent une force de tirée. Cette inversion de type de force entre les bielles extérieures 43R, 43T et la bielle centrale 43S est due à la position de montage du premier levier 42S, de la première bielle centrale 43S, du deuxième levier 44S et du troisième levier 45S relatif à la position de montage des mêmes éléments des deux autres phases. (figures 4, 5 et 6). En effet, dans le mode illustré, le troisième levier central 45s est identique au deuxième 44s, ces deux leviers étant agencés l'un par rapport à l'autre selon un angle α de l'ordre de 180° sur l'arbre de transmission 41s. Cet angle α peut être compris avantageusement entre 140° et 220° selon l'invention. Au contraire, le deuxième 44R, 44T et troisième levier 45R, 45T extérieurs sont agencés l'un par rapport à l'autre selon un angle nul sur leur arbre de transmission respectif 41R, 41T. (figures 4 et 6). Cet angle peut être compris avantageusement entre -40° et +40° selon l'invention.In the illustrated embodiment, the three output shafts 30 R , 30 S , 30 T rotate in the same direction of rotation. During a closing operation, the first outer connecting rods 43 R , 43 T undergo a thrust force, while the first connecting rod 43 S undergoes a pulling force. The three second links 46 R , 46 S , 46 T undergo a thrust force. Conversely, during an opening or tripping operation, the first outer links 43 R , 43 T undergo a pulling force while the first link 43 S undergoes a thrust force. In other words, one of the outer rods 43 S moves in a direction opposite to the direction of the outer rods 43 R , 43 T of the two other poles R, T for the same operation operation. The three second links 46 R , 46 S , 46 T undergo a pulling force. This type of force reversal between the outer links 43 R , 43 T and the central rod 43 S is due to the mounting position of the first lever 42 S , the first central rod 43 S , the second lever 44 S and the third lever 45 S relative to the position of mounting the same elements of the other two phases. ( figures 4 , 5 and 6 ). Indeed, in the illustrated mode, the third central lever 45 s is identical to the second 44 s , these two levers being arranged relative to each other at an angle α of the order of 180 ° on the shaft transmission time 41 s . This angle α may advantageously be between 140 ° and 220 ° according to the invention. On the contrary, the second outer 44 R , 44 T and third lever 45 R , 45 T are arranged relative to each other at a zero angle on their respective transmission shaft 41 R , 41 T. ( figures 4 and 6 ). This angle can advantageously be between -40 ° and + 40 ° according to the invention.

Dans le mode de réalisation illustré, la longueur de l'ensemble des premiers leviers 42R, 42S, 42T (figures 4, 5) est identique, celle des leviers 44R, 44S, 44T, 45R, 45S, 45T est identique (figure 6). Bien entendu, la longueur des deuxièmes leviers 44R, 44S, 44T identique entre eux, pourrait être différente de celle des troisièmes leviers 45R, 45S, 45T identique entre eux.In the illustrated embodiment, the length of the set of first levers 42 R , 42 S , 42 T ( figures 4 , 5 ) is identical, that of the levers 44 R , 44 S , 44 T , 45 R , 45 S , 45 T is identical ( figure 6 ). Of course, the length of the second levers 44 R , 44 S , 44 T identical to each other, could be different from that of the third levers 45 R , 45 S , 45 T identical to each other.

Comme il est visible sur la figure 2, les première bielles 43R, 43S, 43T sont chacune légèrement inclinées par rapport au plan dans lesquels s'étendent respectivement chacun des premiers leviers 42R, 42S, 42T. Ces inclinaisons, qui peuvent être différentes d'une des premières bielles 43R, 43S, 43T à une autre, n'ont pas d'influence significative sur la course de mouvement définie. Par contre, elles permettent encore d'optimiser l'encombrement pris par le disjoncteur selon l'invention.As it is visible on the figure 2 , the first links 43 R , 43 S , 43 T are each slightly inclined relative to the plane in which respectively extend each of the first levers 42 R , 42 S , 42 T. These inclinations, which may be different from one of the first links 43 R , 43 S , 43 T to another, have no significant influence on the defined movement path. By cons, they still optimize the space taken by the circuit breaker according to the invention.

Telle que représentée, l'enveloppe métallique 2 comprend un réservoir cylindrique 20 surmonté d'un couvercle 21 formant cloche (figures 6 et 2) à travers lequel passe l'arbre de transmission 41R, 41S, 41T, des moyens d'étanchéité étant prévus dans la zone de passage de la partie des moyens de transmission pour assurer l'étanchéité du gaz diélectrique à l'intérieur de l'enveloppe métallique 2 (figure 6).As shown, the metal casing 2 comprises a cylindrical reservoir 20 surmounted by a lid 21 forming a bell ( figures 6 and 2 ) through which passes the transmission shaft 41 R , 41 S , 41 T , sealing means being provided in the passage zone of the portion of the transmission means to seal the dielectric gas inside of the metal shell 2 ( figure 6 ).

D'autres variantes et modifications peuvent être envisagées sans pour autant sortir du cadre de l'invention. Par exemple, les premières bielles 43R, 43T peuvent s'étendre à l'extérieur du plan formé par les pôles R et T : la position angulaire des premiers leviers sur leur arbre de sortie respectif devra alors être adaptée pour respecter les rapports de vitesse identiques entre les trois mécanismes de transmission mécanique.Other variants and modifications can be envisaged without departing from the scope of the invention. For example, the first links 43 R , 43 T may extend outside the plane formed by the poles R and T: the angular position of the first levers on their respective output shaft must then be adapted to respect the ratios of identical speeds between the three mechanical transmission mechanisms.

Selon une autre variante, les premiers leviers et les deuxièmes et troisièmes leviers peuvent avoir des longueurs différentes. La distance a entre l'axe de chacune des premières bielles et celui de leur arbre de sortie respectif devra toujours être identique pour les trois mécanismes. De même, la distance b entre l'axe de la première bielle et l'axe de l'arbre de transmission et celle de b en fonction de la rotation de l'arbre de sortie respectif devra être la même pour les trois mécanismes de transmission.According to another variant, the first levers and the second and third levers may have different lengths. The distance a between the axis of each of the first rods and that of their respective output shaft must always be identical for the three mechanisms. Likewise, the distance b between the axis of the first connecting rod and the axis of the transmission shaft and that of b as a function of the rotation of the respective output shaft must be the same for the three transmission mechanisms. .

Selon une autre variante, les premiers leviers 42R, 42S, 42T des différents pôles et aussi les deuxièmes leviers 44R, 44S, 44T peuvent avoir des longueurs différents. Pour obtenir les mêmes rapports de transmissions pour les différents pôles, au moins la relation a/b doit être la même pour les trois pôles quel que soit l'angle de rotation lors d'une commutation.According to another variant, the first levers 42 R , 42 S , 42 T of the different poles and also the second levers 44 R , 44 S , 44 T may have different lengths. To get the same reports of transmissions for the different poles, at least the relation a / b must be the same for the three poles whatever the angle of rotation during a commutation.

Claims (15)

  1. High or medium voltage switching apparatus (1) of the type having metalclad switching means for three phases (R, S, T) and comprising:
    · a metal tank (2) filled with a gas and enclosing three interrupters (R, S, T), being one interrupter for each phase;
    · three independent control units (3R, 3S, 3T), each of which is adapted for actuating a moving contact of a respective one of the three interrupters (R, S, T); and
    · three transmission mechanisms (4R, 4S, 4T), each of which is connected, firstly, to the output shaft (30R, 30S, 30T) of a respective one of the three control units, and secondly, to the moving contact of a respective one of the three interrupters (R, S, T), wherein the three control units (3R, 3S, 3T) are arranged in the said apparatus outside and above the metal tank (2), and wherein the three transmission mechanism (4R, 4S, 4T) have different geometries from one another but identical speed ratios, regardless of the instant of transmission during a switching operation.
  2. Apparatus (1) according to claim 1, wherein the three interrupters (R, S, T) are disposed in the metal tank (2) in such a way as to define a triangle.
  3. Apparatus (1) according to claim 2, wherein the triangle is isosceles.
  4. Apparatus (1) according to any preceding claim, wherein the three control units are disposed vertically above the metal tank (2).
  5. Apparatus (1) according to any preceding claim, wherein the three control units (3R, 3S, 3T) are parallel to one another, with their three output shafts (30R, 30S, 30T) aligned with one another along a common axis (H-H).
  6. Apparatus (1) according to claim 5, wherein the three control units are aligned in a row.
  7. Apparatus (1) according to any preceding claim, wherein the three control units are identical with one another.
  8. Apparatus (1) according to any preceding claim, wherein the three control units (3R, 3S, 3T) are fixed to a common platform (5), which is itself fixed on the top (21) of the metal tank (2).
  9. Apparatus (1) according to any preceding claim, wherein at least one of the three transmission mechanisms (4R, 4S, 4T) comprises the following:
    · a first lever (42R, 42R, 42T) that is fixed transversely to the output shaft (30R, 30S, 30T) of a respective one of the three control units;
    · a first connecting rod (43R, 43S, 43T), one end of which is pivoted on the free end of the corresponding said first lever (42R, 42S, 42T);
    · a second lever (44R, 44S, 44T) that is fixed to one end of a transmission shaft (41R, 41S, 41T), which is rotatably mounted in an upper part (21) of the metal tank (2) and which is pivoted to the other end of the first connecting rod (43R, 43S, 43T) ; and
    · a third lever (45R, 45S, 45T) that is fixed to the other end of the transmission shaft (41R, 41S, 41T) and pivoted to an end of an insulating second connecting rod (46R, 46S, 46T) or to an end of a moving contact of an interrupter, the transmission mechanism being so arranged that, firstly, the first lever, first connecting rod, and second lever are disposed outside the metal tank (2), and, secondly, the third lever and, where applicable, the second connecting rod, is or are disposed inside the metal tank (2).
  10. Apparatus (1) according to any preceding claim, wherein one of the external connecting rods (43S) is displaceable in a direction opposed to the direction of the external connecting rods (43R, 43T) for the other two phases (R, T) when performing the same operation in use.
  11. Apparatus (1) according to any preceding claim, wherein the three transmission mechanisms (4R, 4S, 4T) are so disposed as to define a triangle.
  12. Apparatus (1) according to claim 11 in combination with claim 9 or claim 10, wherein the ratio a/b is the same for each interrupter, for the same angular position of the output shaft (30R, 30S, 30T), where a is the distance between the axis of the first connecting rod (43R, 43S, 43T) and the axis of the output shaft (30R, 30S, 30T), and b is the distance between the axis of the first connecting rod (43R, 43S, 43T) and the axis of the transmission shaft (41R, 41S, 41T).
  13. Apparatus (1) according to claim 12, wherein:
    · the distance a is identical for the three mechanisms; and
    · the distance b is identical for the three mechanisms regardless of the rotation of the output shaft (30R, 30S, 30T).
  14. Apparatus (1) according to any preceding claim, wherein the three interrupters constitute three poles (R, S, T) of the circuit breaker (1).
  15. Apparatus according to any preceding claim, wherein the metal tank (2) comprises a cylindrical tank (20) surmounted by a bell-shaped cover member (21) through which a part (41R, 41S, 41T) of the transmission means passes, with sealing means being arranged in the zone through which the said part of the transmission means is arranged to pass, whereby to provide a seal for the dielectric gas inside the metal tank (2).
EP08161241A 2007-08-08 2008-07-28 Three-phase switching device in metal casing with reduced dimensions and phase transmission forces Active EP2023361B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0756996A FR2919957B1 (en) 2007-08-08 2007-08-08 METALLIC ENCLOSURE METALLIC ENCLOSURE TYPE SWITCHING DEVICE WITH REDUCED PHASE TRASMISSION FORCES AND REDUCED PHASE TRASMISSION FORCES

Publications (2)

Publication Number Publication Date
EP2023361A1 EP2023361A1 (en) 2009-02-11
EP2023361B1 true EP2023361B1 (en) 2010-06-30

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ID=39156338

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Application Number Title Priority Date Filing Date
EP08161241A Active EP2023361B1 (en) 2007-08-08 2008-07-28 Three-phase switching device in metal casing with reduced dimensions and phase transmission forces

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EP (1) EP2023361B1 (en)
KR (1) KR101496372B1 (en)
CN (1) CN101364715B (en)
AT (1) ATE472816T1 (en)
DE (1) DE602008001636D1 (en)
FR (1) FR2919957B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016213158A1 (en) 2016-07-19 2018-01-25 Siemens Aktiengesellschaft Switchgear arrangement
EP3312864B1 (en) * 2016-10-24 2019-07-31 Siemens Aktiengesellschaft Multifunctional switch module for high voltage compact switchgear

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56118224A (en) * 1980-02-20 1981-09-17 Hitachi Ltd Singleephase reclosing type 33phase simultaneous gas breaker
DE4210370A1 (en) * 1992-03-30 1993-10-07 Abb Patent Gmbh High voltage control panel
ATE158105T1 (en) 1993-11-03 1997-09-15 Gec Alsthom T & D Ag SPRING DRIVE FOR A SWITCHING DEVICE
US5569891A (en) 1994-02-14 1996-10-29 Abb Power T&D Company, Inc. High performance circuit breaker with independent pole operation linkage and conical composite bushings
FR2753563B1 (en) * 1996-09-16 1998-10-16 Schneider Electric Sa MULTIPOLAR ELECTRIC SWITCH HAVING AN ELEMENTAL SWITCHING BAR BY POLE
DE19718639A1 (en) * 1997-05-02 1998-11-05 Abb Patent Gmbh High voltage switchgear
CN1143342C (en) * 1998-06-05 2004-03-24 Lg产电株式会社 Trip link structure for circuit breaker
US5962824A (en) * 1998-06-10 1999-10-05 Lg Industrial Systems, Co., Ltd. Trip link structure for circuit breaker
DE29902208U1 (en) 1999-01-28 2000-08-17 Siemens Ag Multi-phase encapsulated outdoor high-voltage switching device

Also Published As

Publication number Publication date
ATE472816T1 (en) 2010-07-15
KR101496372B1 (en) 2015-02-26
DE602008001636D1 (en) 2010-08-12
FR2919957A1 (en) 2009-02-13
CN101364715B (en) 2012-09-26
KR20090015818A (en) 2009-02-12
FR2919957B1 (en) 2009-10-30
EP2023361A1 (en) 2009-02-11
CN101364715A (en) 2009-02-11

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