EP0801406A1 - Control device with rectilinear springs for high voltage circuitbreaker - Google Patents

Control device with rectilinear springs for high voltage circuitbreaker Download PDF

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Publication number
EP0801406A1
EP0801406A1 EP97400734A EP97400734A EP0801406A1 EP 0801406 A1 EP0801406 A1 EP 0801406A1 EP 97400734 A EP97400734 A EP 97400734A EP 97400734 A EP97400734 A EP 97400734A EP 0801406 A1 EP0801406 A1 EP 0801406A1
Authority
EP
European Patent Office
Prior art keywords
spring
trigger
control
control according
rod
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.)
Granted
Application number
EP97400734A
Other languages
German (de)
French (fr)
Other versions
EP0801406B1 (en
Inventor
Edmond Thuries
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0801406A1 publication Critical patent/EP0801406A1/en
Application granted granted Critical
Publication of EP0801406B1 publication Critical patent/EP0801406B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3063—Decoupling charging handle or motor at end of charging cycle or during charged condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H3/264—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor using a travelling nut mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors

Definitions

  • the present invention relates to a control for the operation of a high voltage circuit breaker.
  • the invention relates to an order comprising rectilinear springs and making it possible to carry out the opening and closing cycles usually requested by the users.
  • the most commonly requested cycle is a cycle comprising an opening, a closing after 0.3 seconds followed by an opening within 0.02s if the fault has not disappeared.
  • Such a cycle is generally designated by the abbreviation: O-0.3sF-0.02s0.
  • circuit breaker having carried out a 0-0.3sF-0.02sO cycle is also asked to be able to close after a maximum delay of 15s, this closing can be followed by an opening within a delay of 0.02s if the fault persists .
  • patent No. 85 15 751 filed in the name of the company ALSTHOM, there has been described a control with rectilinear springs for a high voltage circuit breaker capable of carrying out the aforementioned cycles.
  • This command has several drawbacks.
  • the device for resetting the springs is complex; it includes many parts and in particular a ratchet wheel which is subject to rapid wear and requires frequent replacement.
  • An object of the invention is to provide a more robust control and requiring lighter maintenance.
  • the device for resetting the control described in the aforementioned patent is bulky.
  • Another object of the invention is to provide a more compact control and more respecting axial symmetry, which allows it to be housed under the poles of the circuit breaker.
  • the subject of the invention is a command for a circuit breaker, enabling a rapid cycle to be carried out.
  • opening, closing and reopening of the circuit breaker (OFO cycle) said control comprising a rod connected to an operating rod of the circuit breaker, said rod being displaceable under the action of a first spring, called tripping spring, the control further comprising a second spring, said engagement spring, disposed in the axis of the first spring, and the relaxation of which causes the compression spring to compress
  • the control further comprising means for compressing the trigger spring after a tripping operation, characterized in that said compression means comprise a motor disposed on the axis of said springs and driving in translation along its axis a rod arranged along the axis of the springs, said rod being integral with arms cooperating with a support ring for the engagement spring.
  • the support ring of the engagement spring is secured to a movable cylinder, one end of which cooperates with a support disc of the release spring during the compression of said release spring.
  • said end of the movable cylinder comprises a ring of pivoting fingers provided with a shoulder on which bears said support disc of the trigger spring during the compression of the latter, said fingers coming into contact in end of stroke of said cylinder with a fixed and moving cylinder, freeing said disc.
  • the stroke of said movable cylinder exceeds the normal position in abutment of said support disc of the trigger spring, in order to allow the repositioning of stops of the support disc of the trigger spring.
  • the end of said arms is fixed to a common crown which comes to bear, during a recompression of the engagement spring, on said support crown of the engagement spring.
  • the stroke of said arms exceeds the normal position in abutment of said support crown of the engagement spring, in order to allow the repositioning of stops of said support crown.
  • the pivoting arms include a device for passing neutral to allow the ring of fingers to assume two fixed positions.
  • each finger has an external portion cooperating with a fixed cylinder to allow, at the end of the recompression maneuver of the engagement spring, the passage of the ring of pivoting fingers from the open position to the reverse position.
  • the example described relates to a circuit breaker with a pole breaking chamber; of course, the control of the invention applies to a circuit breaker comprising several breaking chambers per pole, for example two T-chambers.
  • reference 1 designates an insulating column of a circuit breaker pole. The column rests on a frame 2 fixed to the ground.
  • a fixed contact 3 is placed in the breaking chamber 4 filled with insulating gas such as sulfur hexafluoride SF6.
  • the chamber 4 is delimited, at its lower part, by a first flange 5 to which is fixed a first socket outlet 5A, and, at its lower part, by a second flange 7 to which is fixed a second socket outlet 7A.
  • the reference 8 designates a fixed blow piston.
  • the movable assembly comprises contacts 9 and a nozzle 10 integral with a cylinder 11 cooperating with the piston 8.
  • the cylinder is connected to an operating rod 12 which crosses the flange 7 in leaktight manner.
  • This rod 12 is connected to a rod 13 forming part of the control which has been represented in FIG. 1 by the rectangle 14.
  • the control is fixed to the chassis 2 by means not shown; it is placed directly under the pole to be maneuvered.
  • FIG. 2 represents in axial section a control according to the invention, in the configuration corresponding to the circuit breaker engaged in normal operation.
  • the control comprises a metal frame 20, preferably cylindrical with an axis xx, which is rigidly fixed under the breaking chamber of the circuit breaker by means not shown.
  • a bottom 20A closes the cylinder 20.
  • the top of the frame includes a cover 21 provided with an orifice through which passes the operating rod 12 of the circuit breaker pole; to the rod 12 is connected a rod 13 provided at its end with a disc 24 serving to support a first spring 25, coaxial with the rod 13, and intended for the tripping operation of the circuit breaker; for this reason, the spring 25 is called a trigger spring.
  • Spring 25 is surrounded by a cylinder 26, coaxial with the rod 13 and of height substantially equal to that of the spring 25 when the latter is bandaged. The role of this cylinder will be explained later.
  • the spring is kept bandaged by at least one retractable stop 27 which can be operated by an opening coil 28 supplied by devices not shown for operating and / or protecting the circuit breaker.
  • a retractable stop 27 which can be operated by an opening coil 28 supplied by devices not shown for operating and / or protecting the circuit breaker.
  • the control includes a movable assembly comprising a cylinder 30 of axis xx secured to a disc 31 against which a first end of a second spring 32 is used, used for switching on the circuit breaker and for this reason called engagement spring.
  • the second end of the spring 32 bears on a bottom 33 of the frame 20.
  • the spring 32 is kept bandaged by at least one retractable stop 34 which can be operated by a closing coil 35 supplied by the operating and / or protection devices of the circuit breaker not shown.
  • the cylinder 30 is extended by a series of pivoting fingers 36, forming a corolla and which can be opened in the same way. These fingers, used to reset the trigger spring, are hereinafter called reset fingers.
  • Each finger 36 has, about a third of the length from the upper end, a hooking shoulder 37 directed towards the axis xx.
  • Each finger 36 articulated at point O at the end of the cylinder 30, is equipped with a spring 38 fixed by a first end to the finger itself and by its second end, to the cylinder 30.
  • This spring constitutes a passage device neutral or "tumbler", allowing the finger 36 to occupy two fixed positions on either side of the axis O of articulation of the finger.
  • the external part 39 of the foot of the finger cooperates with a fixed jacket 30A coaxial with the cylinder 30 to return the fingers from the open position to the reverse position, when the cylinder 30 reaches the low position.
  • the spring 32 When the spring 32 is relaxed, it can be bandaged again by a device comprising arms 40, parallel to the axis xx, regularly arranged around this axis, 2 or 3 for example.
  • the arms cross the bottom 33 through appropriate openings.
  • the arms At their upper end, the arms are joined by a horizontal crown 41.
  • the arms 40 At their other end, the arms 40 are fixed to a plate 42 (as a variant of the arms), to which the end of a threaded rod 43 is fixed, axis xx, which can be moved in translation along the axis xx by means of an electric motor 44, which can rotate in both directions.
  • the motor 44 and the rod 43 are housed in a cylindrical housing 45 integral with the bottom 33 and closed by a plate 46 provided with a hole 46 for the passage of the rod 43.
  • the cylinder 45 also serves as a guide for the cylinder 30.
  • the operation of the control is as follows.
  • the opening coil 28 When an opening order is given, the opening coil 28 is supplied and causes the stop 27 to be retracted which pivots in the direction of the arrow F1.
  • the trigger spring 25 relaxes, driving the circuit-breaker operating rod (Fig. 5). It can be seen that at the end of the race, the plate 24 rests on the shoulders of the fingers 36.
  • a closing order given 0.3 s after the opening of the circuit breaker, results in the supply of the closing coil 35, which causes the abutment 34 to retract which rotates in the direction of arrow F2.
  • the spring 32 relaxes, which causes the cylinder 30 to move.
  • the fingers 36 drive the disc 24, which causes the circuit breaker to engage as well as the compression of the trigger spring 25.
  • the normal position of the disc 24 is exceeded by a few millimeters, which allows the stop 27 to be put back in place.
  • the fingers 36 move apart (FIG. 4), releasing the disc 24 which falls back on its stop 27. Thanks to the spring 38, the fingers 36 remain in the open position. Following this engagement, the control has the configuration shown in Fig. 6. It is observed that at the end of the switching operation, the crown 31 comes into contact with the crown 41.
  • the spring 32 has a force greater than that of the spring 25 to ensure both the latching movement of the mobile assembly and the compression of the spring 25.
  • a second opening if the fault persists, can be carried out. It will be obtained as before by supplying the opening coil 28 which will cause the stop 27 to retract and the spring 25 to relax.
  • the circuit breaker must be able to be reset within a given time, for example 10 seconds.
  • the control of the invention allows it: at the end of the second opening of the circuit breaker, the motor 44 is started; it rotates the threaded rod 43 which drives the disc 42 and the arms 40.
  • the crown 41 drives the crown 31 and the cylinder 30 to which it is integral.
  • the spring 32 is compressed by this operation.
  • there is a slight overtravel of the rod 43 to allow the stop to be repositioned on the crown 31.
  • the motor 44 is stopped and at this time the configuration is that of FIG. 8.
  • the engine is immediately started, in the opposite direction to that which it had previously, to return the control to the configuration of FIG. 2, that is to say with the crown 41 in the high position.
  • the duration of 10 seconds to perform this maneuver is sufficiently long to authorize the use of a low power motor, for example of the order of 150 W.
  • the invention makes it possible to avoid the drawbacks mentioned in the preamble, in particular the difficulties created by the ratchet wheels.
  • the control is compact and perfectly revolutionary, which gives it a small footprint.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Circuit Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Fuses (AREA)

Abstract

The controller incorporates an opening spring (25) and a coaxial closing spring (32) whose release causes compression of the opening spring. The latter drives a disc (24) fitted to the end of a rod (13) which is connected (12) to a piston carrying the moving contacts. The compression is performed after a trip by a reversible motor (44) aligned with the common axis (x-x) and driving a threaded shaft (43) integral with arms (40) bearing upon the ring (31) against which the closing spring abuts.

Description

La présente invention est relative à une commande pour la manoeuvre d'une disjoncteur à haute tension.The present invention relates to a control for the operation of a high voltage circuit breaker.

Plus précisément, l'invention concerne une commande comprenant des ressorts rectilignes et permettant d'effectuer les cycles d'ouvertures et de fermetures habituellement demandés par les utilisateurs.More specifically, the invention relates to an order comprising rectilinear springs and making it possible to carry out the opening and closing cycles usually requested by the users.

Le cycle le plus couramment demandé est un cycle comprenant une ouverture, une refermeture après 0,3 seconde suivi d'une ouverture dans un délai de 0,02s si le défaut n'a pas disparu. Un tel cycle est généralement désigné par l'abréviation: O-0,3sF-0,02s0.The most commonly requested cycle is a cycle comprising an opening, a closing after 0.3 seconds followed by an opening within 0.02s if the fault has not disappeared. Such a cycle is generally designated by the abbreviation: O-0.3sF-0.02s0.

On demande aussi au disjoncteur ayant effectué un cycle 0-0,3sF-0,02sO, de pouvoir se refermer après un délai maximal de 15s, cette fermeture pouvant être suivie d'une ouverture dans un délai de 0,02s si le défaut persiste. Dans le brevet n°85 15 751, déposé au nom de la société ALSTHOM, il a été décrit une commande à ressorts rectilignes pour disjoncteur à haute tension capable d'effectuer les cycles précités.The circuit breaker having carried out a 0-0.3sF-0.02sO cycle is also asked to be able to close after a maximum delay of 15s, this closing can be followed by an opening within a delay of 0.02s if the fault persists . In patent No. 85 15 751, filed in the name of the company ALSTHOM, there has been described a control with rectilinear springs for a high voltage circuit breaker capable of carrying out the aforementioned cycles.

Cette commande présente plusieurs inconvénients.This command has several drawbacks.

Le dispositif de réarmement des ressorts est complexe; il comprend de nombreuses pièces et en particulier une roue à rochet qui est sujette à une usure rapide et nécessite son remplacement fréquent.The device for resetting the springs is complex; it includes many parts and in particular a ratchet wheel which is subject to rapid wear and requires frequent replacement.

Un but de l'invention est de réaliser une commande plus robuste et nécessitant une maintenance plus légère. Le dispositif de réarmement de la commande décrite dans le brevet précité est encombrant.An object of the invention is to provide a more robust control and requiring lighter maintenance. The device for resetting the control described in the aforementioned patent is bulky.

Un autre but de l'invention est de réaliser une commande plus compacte et respectant davantage une symétrie axiale, ce qui permet de la loger sous les pôles du disjoncteur.Another object of the invention is to provide a more compact control and more respecting axial symmetry, which allows it to be housed under the poles of the circuit breaker.

L'invention a pour objet une commande pour un disjoncteur, permettant d'effectuer un cycle rapide d'ouverture, de fermeture et de réouverture du disjoncteur (cycle O-F-O), ladite commande comprenant une tige reliée à une tringle de manoeuvre du disjoncteur, ladite tige étant déplaçable sous l'action d'un premier ressort, dit ressort de déclenchement, la commande comprenant en outre un second ressort, dit ressort d'enclenchement, disposé dans l'axe du premier ressort, et dont la détente entraîne la compression du ressort de déclenchement, la commande comprenant en outre des moyens de compression du ressort de déclenchement après une opération de déclenchement, caractérisée en ce que lesdits moyens de compression comprennent un moteur disposé sur l'axe desdits ressorts et entraînant en translation le long de son axe une tige disposée selon l'axe des ressorts, ladite tige étant solidaire de bras coopérant avec une couronne d'appui du ressort d'enclenchement.The subject of the invention is a command for a circuit breaker, enabling a rapid cycle to be carried out. opening, closing and reopening of the circuit breaker (OFO cycle), said control comprising a rod connected to an operating rod of the circuit breaker, said rod being displaceable under the action of a first spring, called tripping spring, the control further comprising a second spring, said engagement spring, disposed in the axis of the first spring, and the relaxation of which causes the compression spring to compress, the control further comprising means for compressing the trigger spring after a tripping operation, characterized in that said compression means comprise a motor disposed on the axis of said springs and driving in translation along its axis a rod arranged along the axis of the springs, said rod being integral with arms cooperating with a support ring for the engagement spring.

Avantageusement, la couronne d'appui du ressort d'enclenchement est solidaire d'un cylindre mobile dont une extrémité coopère avec un disque d'appui du ressort de déclenchement lors de la compression dudit ressort de déclenchement.Advantageously, the support ring of the engagement spring is secured to a movable cylinder, one end of which cooperates with a support disc of the release spring during the compression of said release spring.

Selon l'invention, ladite extrémité du cylindre mobile comprend une couronne de doigts pivotants munis d'un épaulement sur lesquels vient s'appuyer ledit disque d'appui du ressort de déclenchement lors de la compression de ce dernier, lesdits doigts venant en contact en fin de course dudit cylindre avec un cylindre fixe et s'écartant, libérant ledit disque.According to the invention, said end of the movable cylinder comprises a ring of pivoting fingers provided with a shoulder on which bears said support disc of the trigger spring during the compression of the latter, said fingers coming into contact in end of stroke of said cylinder with a fixed and moving cylinder, freeing said disc.

Avantageusement, la course dudit cylindre mobile dépasse la position normale en butée dudit disque d'appui du ressort de déclenchement, afin de permettre le repositionnement de butées du disque d'appui du ressort de déclenchement.Advantageously, the stroke of said movable cylinder exceeds the normal position in abutment of said support disc of the trigger spring, in order to allow the repositioning of stops of the support disc of the trigger spring.

L'extrémité desdits bras est fixé à une couronne commune venant s'appuyer, lors d'une recompression du ressort d'enclenchement, sur ladite couronne d'appui du ressort d'enclenchement.The end of said arms is fixed to a common crown which comes to bear, during a recompression of the engagement spring, on said support crown of the engagement spring.

La course desdits bras dépasse la position normale en butée de ladit couronne d'appui du ressort d'enclenchement, afin de permettre le repositionnement de butées de ladite couronne d'appui.The stroke of said arms exceeds the normal position in abutment of said support crown of the engagement spring, in order to allow the repositioning of stops of said support crown.

Les bras pivotants comportent un dispositif à passage de point mort pour permettre à la couronne de doigts de prendre deux positions fixes.The pivoting arms include a device for passing neutral to allow the ring of fingers to assume two fixed positions.

Le pied de chaque doigt possède une portion externe coopérant avec un cylindre fixe pour permettre, en fin de manoeuvre de recompression du ressort d'enclenchement, le passage de la couronne de doigts pivotants de la position épanouie à la position inverse.The foot of each finger has an external portion cooperating with a fixed cylinder to allow, at the end of the recompression maneuver of the engagement spring, the passage of the ring of pivoting fingers from the open position to the reverse position.

Un exemple de mise en oeuvre de l'invention est maintenant décrit, en référence au dessin annexé dans lequel:

  • la figure 1 est une vue schématique en élévation et partiellement en coupe d'un pôle de disjoncteur muni de la commande de l'invention,
  • la figure 2 est une vue schématique en coupe axiale de la commande de l'invention, dans la configuration correspondant à l'état fermé du disjoncteur,
  • les figures 3 et 4 représentent un doigt de réenclenchementt dans deux positions d'utilisation,
  • la figure 5 est une vue en coupe axiale de la commande dans la configuration qui suit une ouverture,
  • la figure 6 est une vue en coupe axiale de la commande dans une configuration qui suit une refermeture,
  • la figure 7 est une vue en coupe axiale de la commande dans la configuration qui suit le seconde ouverture d'un cycle OFO.
An example of implementation of the invention is now described, with reference to the attached drawing in which:
  • FIG. 1 is a schematic view in elevation and partially in section of a circuit breaker pole fitted with the control of the invention,
  • FIG. 2 is a schematic view in axial section of the control of the invention, in the configuration corresponding to the closed state of the circuit breaker,
  • FIGS. 3 and 4 represent a reset finger in two positions of use,
  • FIG. 5 is a view in axial section of the control in the configuration which follows an opening,
  • FIG. 6 is a view in axial section of the control in a configuration which follows reclosing,
  • Figure 7 is an axial sectional view of the control in the configuration following the second opening of an OFO cycle.

L'exemple décrit concerne un disjoncteur à une chambre de coupure par pôle; bien entendu la commande de l'invention s'applique à un disjoncteur comprenant plusieurs chambres de coupure par pôle, par exemple deux chambres en T.The example described relates to a circuit breaker with a pole breaking chamber; of course, the control of the invention applies to a circuit breaker comprising several breaking chambers per pole, for example two T-chambers.

Dans la Fig.1, la référence 1 désigne une colonne isolante d'un pôle de disjoncteur. La colonne repose sur un châssis 2 fixé au sol.In Fig.1, reference 1 designates an insulating column of a circuit breaker pole. The column rests on a frame 2 fixed to the ground.

Un contact fixe 3 est placé dans la chambre de coupure 4 remplie de gaz d'isolement tel que l'hexafluorure de soufre SF6.A fixed contact 3 is placed in the breaking chamber 4 filled with insulating gas such as sulfur hexafluoride SF6.

La chambre 4 est délimitée, à sa partie inférieure, par un premier flasque 5 auquel est fixée une première prise de courant 5A, et, à sa partie inférieure, par un second flasque 7 auquel est fixée une seconde prise de courant 7A.The chamber 4 is delimited, at its lower part, by a first flange 5 to which is fixed a first socket outlet 5A, and, at its lower part, by a second flange 7 to which is fixed a second socket outlet 7A.

La référence 8 désigne un piston de soufflage fixe. L'ensemble mobile comprend des contacts 9 et une tuyère 10 solidaires d'un cylindre 11 coopérant avec le piston 8. Le cylindre est relié à une tige de manoeuvre 12 qui traverse de manière étanche le flasque 7.The reference 8 designates a fixed blow piston. The movable assembly comprises contacts 9 and a nozzle 10 integral with a cylinder 11 cooperating with the piston 8. The cylinder is connected to an operating rod 12 which crosses the flange 7 in leaktight manner.

Cette tige 12 est reliée à une tige 13 faisant partie de la commande qui a été représentée dans la figure 1 par le rectangle 14.This rod 12 is connected to a rod 13 forming part of the control which has been represented in FIG. 1 by the rectangle 14.

La commande est fixée au châssis 2 par des moyens non représentés; elle est directement placée sous le pôle à manoeuvrer.The control is fixed to the chassis 2 by means not shown; it is placed directly under the pole to be maneuvered.

On se reportera maintenant à la Fig. 2 qui représente en coupe axiale une commande selon l'invention, dans la configuration correspondant au disjoncteur enclenché en fonctionnement normal.We will now refer to FIG. 2 which represents in axial section a control according to the invention, in the configuration corresponding to the circuit breaker engaged in normal operation.

La commande comprend un bâti métallique 20, de préférence cylindrique d'axe xx, qui est fixé rigidement sous la chambre de coupure du disjoncteur par des moyens non représentés. Un fond 20A ferme le cylindre 20. Le sommet du bâti comprend un couvercle 21 muni d'un orifice par lequel passe la tringle de manoeuvre 12 du pôle de disjoncteur; à la tringle 12 est reliée une tige 13 munie à son extrémité d'un disque 24 servant d'appui à un premier ressort 25, coaxial à la tige 13, et destiné à la manoeuvre de déclenchement du disjoncteur; pour cettre raison, le ressort 25 est appelé ressort de déclenchement. Le ressort 25 est entouré d'un cylindre 26, coaxial à la tige 13 et de hauteur sensiblement égale à celle du ressort 25 lorsque celui-ci est bandé. Le rôle de ce cylindre sera expliqué plus loin. Le ressort est maintenu bandé par au moins une butée escamotable 27 pouvant être manoeuvrée par une bobine d'ouverture 28 alimentée par des dispositifs non représentés de manoeuvre et/ou de protection du disjoncteur. Il peut y avoir plusieurs butées manoeuvrées simultanément, mais dans la suite, pour la clarté de l'exposé, on ne fera référence qu'à une seule butée.The control comprises a metal frame 20, preferably cylindrical with an axis xx, which is rigidly fixed under the breaking chamber of the circuit breaker by means not shown. A bottom 20A closes the cylinder 20. The top of the frame includes a cover 21 provided with an orifice through which passes the operating rod 12 of the circuit breaker pole; to the rod 12 is connected a rod 13 provided at its end with a disc 24 serving to support a first spring 25, coaxial with the rod 13, and intended for the tripping operation of the circuit breaker; for this reason, the spring 25 is called a trigger spring. Spring 25 is surrounded by a cylinder 26, coaxial with the rod 13 and of height substantially equal to that of the spring 25 when the latter is bandaged. The role of this cylinder will be explained later. The spring is kept bandaged by at least one retractable stop 27 which can be operated by an opening coil 28 supplied by devices not shown for operating and / or protecting the circuit breaker. There may be several stops operated simultaneously, but in the following, for the sake of clarity, reference will be made to only one stop.

La commande comprend un ensemble mobile comportant un cylindre 30 d'axe xx solidaire d'un disque 31 contre lequel prend appui une première extrémité d'un second ressort 32 utilisé pour l'enclenchement du disjoncteur et appelé pour cette raison ressort d'enclenchement. La seconde extrémité du ressort 32 prend appui sur un fond 33 du bâti 20.The control includes a movable assembly comprising a cylinder 30 of axis xx secured to a disc 31 against which a first end of a second spring 32 is used, used for switching on the circuit breaker and for this reason called engagement spring. The second end of the spring 32 bears on a bottom 33 of the frame 20.

Le ressort 32 est maintenu bandé par au moins une butée escamotable 34 pouvant être manoeuvrée par une bobine de fermeture 35 alimentée par les dispositifs de manoeuvre et/ou de protection du disjoncteur non représentés.The spring 32 is kept bandaged by at least one retractable stop 34 which can be operated by a closing coil 35 supplied by the operating and / or protection devices of the circuit breaker not shown.

Le cylindre 30 se prolonge par une de série de doigts 36 pivotants, formant une corolle et pouvant s'ouvrir de la même manière. Ces doigts, servant au réarmement du ressort de déclenchement sont appelés dans la suite doigts de réenclenchement.The cylinder 30 is extended by a series of pivoting fingers 36, forming a corolla and which can be opened in the same way. These fingers, used to reset the trigger spring, are hereinafter called reset fingers.

On se référera aux Fig. 3 et 4.Refer to Figs. 3 and 4.

Chaque doigt 36 possède, environ au tiers de la longueur en partant de l'extrémité supérieure, un épaulement d'accrochage 37 dirigé vers l'axe xx. Chaque doigt 36, articulé au point O à l'extrémité du cylindre 30, est équipé d'un ressort 38 fixé par une première extrémité au doigt lui-même et par sa seconde extrémité, au cylindre 30. Ce ressort constitue un dispositif à passage de point mort ou "tumbler", permettant au doigt 36 d'occuper deux positions fixes de part et d'autre de l'axe O d'articulation du doigt. Enfin la partie externe 39 du pied du doigt coopère avec une chemise fixe 30A coaxiale au cylindre 30 pour ramener les doigts de la position épanouie à la position inverse, lorsque le cylindre 30 arrive en position basse.Each finger 36 has, about a third of the length from the upper end, a hooking shoulder 37 directed towards the axis xx. Each finger 36, articulated at point O at the end of the cylinder 30, is equipped with a spring 38 fixed by a first end to the finger itself and by its second end, to the cylinder 30. This spring constitutes a passage device neutral or "tumbler", allowing the finger 36 to occupy two fixed positions on either side of the axis O of articulation of the finger. Finally, the external part 39 of the foot of the finger cooperates with a fixed jacket 30A coaxial with the cylinder 30 to return the fingers from the open position to the reverse position, when the cylinder 30 reaches the low position.

On revient à la Fig.2.We return to Fig. 2.

Lorsque le ressort 32 est détendu, il peut être bandé à nouveau par un dispositif comprenant des bras 40, parallèles à l'axe xx, disposés régulièrement autour de cet axe, au nombre de 2 ou 3 par exemple. Les bras traversent le fond 33 par des ouvertures appropriées. A leur extrémité supérieure, les bras sont réunis par une couronne horizontale 41. A leur autre extrémité, les bras 40 sont fixés à une plaque 42 (en variante des bras), à laquelle est fixée l'extrémité d'une tige 43 filetée, d'axe xx, pouvant être déplacée en translation le long de l'axe xx au moyen d'un moteur électrique 44, pouvant tourner dans les deux sens.When the spring 32 is relaxed, it can be bandaged again by a device comprising arms 40, parallel to the axis xx, regularly arranged around this axis, 2 or 3 for example. The arms cross the bottom 33 through appropriate openings. At their upper end, the arms are joined by a horizontal crown 41. At their other end, the arms 40 are fixed to a plate 42 (as a variant of the arms), to which the end of a threaded rod 43 is fixed, axis xx, which can be moved in translation along the axis xx by means of an electric motor 44, which can rotate in both directions.

Le moteur 44 et la tige 43 sont logés dans un logement cylindrique 45 solidaire du fond 33 et fermé par une plaque 46 munie d'un trou 46 pour le passage de la tige 43. Le cylindre 45 sert en outre de guidage au cylindre 30. Le fonctionnement de la commande est le suivant.The motor 44 and the rod 43 are housed in a cylindrical housing 45 integral with the bottom 33 and closed by a plate 46 provided with a hole 46 for the passage of the rod 43. The cylinder 45 also serves as a guide for the cylinder 30. The operation of the control is as follows.

Lorsque le disjoncteur est en fonctionnement normal, en position enclenchée, les ressorts 25 et 32 sont bandés, maintenus respectivement par les butées 27 et 34 (Fig.2).When the circuit breaker is in normal operation, in the engaged position, the springs 25 and 32 are bandaged, held respectively by the stops 27 and 34 (Fig.2).

Lorsqu'un ordre d'ouverture est donné, la bobine d'ouverture 28 est alimentée et provoque l'escamotage de la butée 27 qui pivote dans le sens de la flèche F1. Le ressort de déclenchement 25 se détend, entraînant la tringle de manoeuvre du disjoncteur (Fig.5). On constate qu'en fin de course, le plateau 24 repose sur les épaulements des doigts 36.When an opening order is given, the opening coil 28 is supplied and causes the stop 27 to be retracted which pivots in the direction of the arrow F1. The trigger spring 25 relaxes, driving the circuit-breaker operating rod (Fig. 5). It can be seen that at the end of the race, the plate 24 rests on the shoulders of the fingers 36.

Un ordre d'enclenchement, donné 0,3s après l'ouverture du disjoncteur, se traduit par l'alimentation de la bobine de fermeture 35, qui entraîne l'escamotage de la butée 34 qui tourne dans le sens de la flèche F2.A closing order, given 0.3 s after the opening of the circuit breaker, results in the supply of the closing coil 35, which causes the abutment 34 to retract which rotates in the direction of arrow F2.

Le ressort 32 se détend, ce qui provoque le déplacement du cylindre 30. Les doigts 36 entraînent le disque 24, ce qui provoque l'enclenchement du disjoncteur ainsi que la compression du ressort de déclenchement 25. La position normale du disque 24 est dépassée de quelques millimètres, ce qui permet à la butée 27 de se remettre en place. Lorsque les extrémités des doigts 36 viennent au contact du cylindre 26, dont l'extrémité est découpée en biseau, les doigts 36 s'écartent (Fig.4), libérant le disque 24 qui retombe sur sa butée 27. Grâce au ressort 38, les doigts 36 restent en position épanouie. A la suite de cet enclenchement, la commande a la configuration représentée dans la Fig.6. On observe qu'en fin de manoeuvre d'enclenchement, la couronne 31 vient au contact de la couronne 41.The spring 32 relaxes, which causes the cylinder 30 to move. The fingers 36 drive the disc 24, which causes the circuit breaker to engage as well as the compression of the trigger spring 25. The normal position of the disc 24 is exceeded by a few millimeters, which allows the stop 27 to be put back in place. When the ends of the fingers 36 come into contact with the cylinder 26, the end of which is cut in a bevel, the fingers 36 move apart (FIG. 4), releasing the disc 24 which falls back on its stop 27. Thanks to the spring 38, the fingers 36 remain in the open position. Following this engagement, the control has the configuration shown in Fig. 6. It is observed that at the end of the switching operation, the crown 31 comes into contact with the crown 41.

Le ressort 32 a une force supérieure à celle du ressort 25 pour assurer à la fois le mouvement d'enclenchement de l'ensemble mobile et la compression du ressort 25.The spring 32 has a force greater than that of the spring 25 to ensure both the latching movement of the mobile assembly and the compression of the spring 25.

Une seconde ouverture, en cas de persistence du défaut, peut être effectuée. Elle sera obtenue comme préécédemment par l'alimentation de la bobine d'ouverture 28 qui entraînera l'escamotage de la butée 27 et la détente du ressort 25.A second opening, if the fault persists, can be carried out. It will be obtained as before by supplying the opening coil 28 which will cause the stop 27 to retract and the spring 25 to relax.

A la fin de la seconde ouverture, la configuration de la commande sera celle de la Fig.7.At the end of the second opening, the configuration of the control will be that of Fig. 7.

Selon les normes en vigueur, le disjoncteur doit pouvoir être réenclenché dans un délai donné, par exemple de 10 secondes. La commande de l'invention le permet: dès la fin de la seconde ouverture du disjoncteur, le moteur 44 est mis en marche; il fait pivoter la tige filetée 43 qui entraîne le disque 42 et les bras 40. La couronne 41 entraîne la couronne 31 et le cylindre 30 dont elle est solidaire. Le ressort 32 est comprimé par cette manoeuvre. Comme précédemment, il est prévu une légere surcourse de la tige 43 pour permettre à la butée de se repositionner sur la couronne 31. Le moteur 44 est arrêté et à ce moment la configuration est celle de la Fig. 8. Le moteur est immédiatement mis en route, dans le sens inverse de celui qu'il avait précédemment, pour ramener la commande dans la configuration de la Fig.2, c'est-à-dire avec la couronne 41 en position haute.According to the standards in force, the circuit breaker must be able to be reset within a given time, for example 10 seconds. The control of the invention allows it: at the end of the second opening of the circuit breaker, the motor 44 is started; it rotates the threaded rod 43 which drives the disc 42 and the arms 40. The crown 41 drives the crown 31 and the cylinder 30 to which it is integral. The spring 32 is compressed by this operation. As before, there is a slight overtravel of the rod 43 to allow the stop to be repositioned on the crown 31. The motor 44 is stopped and at this time the configuration is that of FIG. 8. The engine is immediately started, in the opposite direction to that which it had previously, to return the control to the configuration of FIG. 2, that is to say with the crown 41 in the high position.

La durée de 10 secondes pour effectuer cette manoeuvre est sufisamment longue pour autoriser l'utilisation d'un moteur de faible puissance, par exemple de l'ordre 150 W.The duration of 10 seconds to perform this maneuver is sufficiently long to authorize the use of a low power motor, for example of the order of 150 W.

L'invention permet d'éviter les inconvénients mentionnés dans le préambule, en particulier les difficultés créées par les roues à rochet. La commande est compacte et parfaitement de révolution, ce qui lui confère un encombrement réduit.The invention makes it possible to avoid the drawbacks mentioned in the preamble, in particular the difficulties created by the ratchet wheels. The control is compact and perfectly revolutionary, which gives it a small footprint.

Claims (9)

Commande pour un disjoncteur, permettant d'effectuer un cycle rapide d'ouverture, de fermeture et de réouverture du disjoncteur (cycle O-F-O), ladite commande comprenant une tige (13) reliée à une tringle de manoeuvre du disjoncteur (12), ladite tige étant déplaçable sous l'action d'un premier ressort (25), dit ressort de déclenchement, la commande comprenant en -outre un second ressort (32), dit ressort d'enclenchement, disposé dans l'axe (xx) du premier ressort, et dont la détente entraîne la compression du ressort de déclenchement (25), la commande comprenant en outre des moyens de compression du ressort de déclenchement (25) après une opération de déclenchement, caractérisée en ce que lesdits moyens de compression comprennent un moteur (44) disposé sur l'axe desdits ressorts (25, 32) et entraînant en translation le long de son axe une tige (43) disposée selon l'axe (xx) des ressorts, ladite tige étant solidaire de bras (40) coopérant avec une couronne (31) d'appui du ressort d'enclenchement (32).Control for a circuit breaker, making it possible to carry out a rapid cycle of opening, closing and reopening of the circuit breaker (OFO cycle), said control comprising a rod (13) connected to an operating rod of the circuit breaker (12), said rod being movable under the action of a first spring (25), said trigger spring, the control comprising in addition a second spring (32), said engagement spring, disposed in the axis (xx) of the first spring , and the trigger of which causes the trigger spring (25) to be compressed, the control further comprising means for compressing the trigger spring (25) after a trigger operation, characterized in that said compression means comprise a motor ( 44) disposed on the axis of said springs (25, 32) and driving in translation along its axis a rod (43) disposed along the axis (xx) of the springs, said rod being integral with arms (40) cooperating with a crown (31) of a ppui of the engagement spring (32). Commande selon la revendication 1, caractérisée en ce que la couronne d'appui (31) d'appui du ressort d'enclenchement (32) est solidaire d'un cylindre mobile (30) dont une extrémité coopère avec un disque (24) d'appui du ressort de déclenchement (25) lors de la compression dudit ressort de déclenchement (25) .Control according to claim 1, characterized in that the support ring (31) for supporting the engagement spring (32) is integral with a movable cylinder (30), one end of which cooperates with a disc (24) d support of the trigger spring (25) during compression of said trigger spring (25). Commande selon la revendication 2, caractérisée que ladite extrémité du cylindre mobile (30) comprend une couronne de doigts pivotants (36) munis d'un épaulements (37) sur lesquels vient s'appuyer ledit disque (24) d'appui du ressort de déclenchement (25) lors de la compression de ce dernier, lesdits doigts venant en contact en fin de course dudit cylindre (30) avec un cylindre fixe (26) et s'écartant, libérant ledit disque (24).Control according to Claim 2, characterized in that the said end of the movable cylinder (30) comprises a ring of pivoting fingers (36) provided with a shoulders (37) on which the said disc (24) for supporting the spring rests. trigger (25) during compression of the latter, said fingers coming into contact at the end of travel of said cylinder (30) with a fixed cylinder (26) and moving away, releasing said disc (24). Commande selon la revendication 3, caractérisé en ce que la course dudit cylindre mobile (30) dépasse la position normale en butée dudit disque (24) d'appui du ressort de déclenchement, afin de permettre le repositionnement de butées (27) du disque (24).Control according to claim 3, characterized in that the stroke of said movable cylinder (30) exceeds the normal position in abutment of said disc (24) supporting the spring release, to allow repositioning of stops (27) of the disc (24). Commande selon l'une des revendications 1 à 4, caractérisée en ce que l'extrémité desdits bras (40) est fixé à une couronne commune (41) venant s'appuyer, lors d'une recompression du ressort d'enclenchement (32), sur ladite couronne d'appui (31) du ressort d'enclenchement (32).Control according to one of claims 1 to 4, characterized in that the end of said arms (40) is fixed to a common crown (41) which comes to bear, during recompression of the engagement spring (32) , on said support ring (31) of the engagement spring (32). Commande selon la revendication 5, caractérisé en ce que la course desdits bras (40) dépasse la position normale en butée de ladite couronne (31) d'appui du ressort d'enclenchement (32), afin de permettre le repositionnement de butées (34) de ladite couronne.Control according to Claim 5, characterized in that the travel of the said arms (40) exceeds the normal position in abutment of the said ring (31) supporting the engagement spring (32), in order to allow the repositioning of the abutments (34 ) of said crown. Commande selon l'une des revendications 1 à 6, caractérisée en ce que les bras pivotants (36) comportent un dispositif (38) à passage de point mort pour permettre à la couronne de doigts (36) de prendre deux positions fixes.Control according to one of claims 1 to 6, characterized in that the pivoting arms (36) comprise a device (38) with neutral passage to allow the ring of fingers (36) to assume two fixed positions. Commande selon la revendication 7, caractérisée en ce que le pied de chaque doigt (36) possède une portion externe (39) coopérant avec un cylindre fixe (30A) pour permettre, en fin de manoeuvre de recompression du ressort d'enclenchement (32), le passage de la couronne de doigts pivotants (36) de la position épanouie à la position inverse.Control according to claim 7, characterized in that the foot of each finger (36) has an external portion (39) cooperating with a fixed cylinder (30A) to allow, at the end of the recompression operation of the engagement spring (32) , the passage of the crown of pivoting fingers (36) from the open position to the reverse position. Commande selon l'une des revendications 1 à 8, caractérisée en ce qu'une compression du ressort d'enclenchement (32) est immédiatement suivie, par manooeuvre du moteur (44) dans le sens inverse, d'un repositionnement en position haute de la couronne (41) commune aux bras (40).Control according to one of Claims 1 to 8, characterized in that compression of the engagement spring (32) is immediately followed, by maneuvering the motor (44) in the opposite direction, by repositioning in the upper position of the crown (41) common to the arms (40).
EP97400734A 1996-04-10 1997-04-01 Control device with rectilinear springs for high voltage circuitbreaker Expired - Lifetime EP0801406B1 (en)

Applications Claiming Priority (2)

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FR9604451 1996-04-10
FR9604451A FR2747502B1 (en) 1996-04-10 1996-04-10 CONTROLLER SPRING CONTROL FOR HIGH VOLTAGE CIRCUIT BREAKER

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EP0801406A1 true EP0801406A1 (en) 1997-10-15
EP0801406B1 EP0801406B1 (en) 2001-12-19

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US (1) US5756952A (en)
EP (1) EP0801406B1 (en)
CN (1) CN1059049C (en)
AT (1) ATE211298T1 (en)
CA (1) CA2202294C (en)
DE (1) DE69709219T2 (en)
ES (1) ES2167689T3 (en)
FR (1) FR2747502B1 (en)
ID (1) ID16599A (en)

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FR2778492A1 (en) * 1998-05-11 1999-11-12 Alsthom Gec Circuit breaker with spring action for resetting contacts
FR2779565A1 (en) * 1998-06-08 1999-12-10 Alsthom Gec Controller mechanism for high voltage switchgear
WO2008046823A1 (en) * 2006-10-18 2008-04-24 Areva T & D Sa Device for controlling an electrical appliance

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FR2746540B1 (en) * 1996-03-22 1998-04-24 Gec Alsthom T & D Sa CONTROL FOR HIGH VOLTAGE CIRCUIT BREAKER
FR2793945B1 (en) * 1999-05-17 2001-06-22 Alstom HIGH VOLTAGE DISCONNECTOR WITH MOBILE CONTACT MOVED AT HIGH SPEED
US6927355B2 (en) * 2000-08-28 2005-08-09 Abb Ab Circuit breaker
FR2836277B1 (en) 2002-02-19 2004-04-16 Alstom SPRING DRIVE MECHANISM FOR RECLINKED MOTION CIRCUIT BREAKER
US9397486B2 (en) * 2012-04-28 2016-07-19 Schneider Electric Industries Sas Subsea electrical distribution system having subsea busbar enclosure assembly pressurized with sulfur hexaflouride (SF6) gas
DE102020132224A1 (en) * 2020-12-03 2022-06-09 Eto Magnetic Gmbh Fast switching actuator device

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EP0660347A1 (en) * 1993-12-27 1995-06-28 Gec Alsthom T & D Sa Linear operating device for circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778492A1 (en) * 1998-05-11 1999-11-12 Alsthom Gec Circuit breaker with spring action for resetting contacts
FR2779565A1 (en) * 1998-06-08 1999-12-10 Alsthom Gec Controller mechanism for high voltage switchgear
WO2008046823A1 (en) * 2006-10-18 2008-04-24 Areva T & D Sa Device for controlling an electrical appliance
FR2907596A1 (en) * 2006-10-18 2008-04-25 Areva T & D Sa DEVICE FOR CONTROLLING AN ELECTRICAL EQUIPMENT
US8309871B2 (en) 2006-10-18 2012-11-13 Areva T&D Sa Apparatus for controlling electrical switchgear

Also Published As

Publication number Publication date
US5756952A (en) 1998-05-26
ES2167689T3 (en) 2002-05-16
CA2202294A1 (en) 1997-10-10
FR2747502A1 (en) 1997-10-17
CA2202294C (en) 2001-06-05
FR2747502B1 (en) 1998-05-15
CN1059049C (en) 2000-11-29
ATE211298T1 (en) 2002-01-15
MX9702519A (en) 1998-06-30
DE69709219D1 (en) 2002-01-31
DE69709219T2 (en) 2002-08-08
ID16599A (en) 1997-10-16
CN1168532A (en) 1997-12-24
EP0801406B1 (en) 2001-12-19

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