EP1237169B1 - High voltage circuir breaker with spring actuator with an additional energy recuperating spring - Google Patents
High voltage circuir breaker with spring actuator with an additional energy recuperating spring Download PDFInfo
- Publication number
- EP1237169B1 EP1237169B1 EP02290446A EP02290446A EP1237169B1 EP 1237169 B1 EP1237169 B1 EP 1237169B1 EP 02290446 A EP02290446 A EP 02290446A EP 02290446 A EP02290446 A EP 02290446A EP 1237169 B1 EP1237169 B1 EP 1237169B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- breaker
- circuit
- lever
- moving contact
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
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- 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
- H01H2003/3084—Kinetic energy of moving parts recuperated by transformation into potential energy in closing or opening spring to be used in next operation
Definitions
- the invention relates to a high-voltage electrical circuit breaker, such as a self-blowing and compressed gas circuit breaker, comprising a breaking chamber with at least one movable contact in the chamber which is actuated by means of a mechanical control device.
- springs for opening or closing the circuit breaker, the control including at least a first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while cocking the circuit breaker; first spring, and wherein an additional spring is provided to exert an additional force which accumulates with the force exerted by the first spring at the beginning of the opening of the circuit breaker.
- An object of the invention is to provide a particular arrangement of a circuit breaker as defined above, which does not require additional energy to arm the additional spring during closing.
- Another object of the invention is to propose a particular arrangement of such a circuit breaker which also makes it possible to recover and store part of the kinetic energy of the mobile contact at the end of opening or closing, for use respectively at the beginning of a subsequent closing or opening operation.
- the subject of the invention is an electric circuit breaker comprising an interrupting chamber with at least one movable contact in the chamber which is actuated by means of a mechanical spring mechanism for opening or closing the circuit breaker, the control including in the at least one first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while arming the first spring, and wherein an additional spring is provided for exert an additional force that is cumulative to the force exerted by the first spring at the beginning of the opening of the circuit breaker, characterized in that the additional spring is mounted such that before the end of the opening of the circuit breaker, the resultant of the force exerted by the additional spring to move the moving contact is reversed to oppose the movement of the moving contact.
- the additional spring is armed by the displacement of the moving contact and it is therefore not necessary to use a portion of the energy of the second spring of the control to reset the additional spring when closing the circuit breaker. Since the moving contact essentially moves due to its own kinetic energy at the end of the opening, the additional spring can be used to recover and store a part of this kinetic energy that is otherwise conventionally consumed in a damping device.
- the control comprises a rotary shaft coupled in motion to the movable contact and rotated alternately by the first or the second spring.
- the additional spring is coupled to the rotary shaft via a lever attached to the shaft and occupying two extreme angular positions corresponding to the positions of the movable contact when the circuit breaker is respectively open or closed.
- the force exerted by the additional spring on the lever is oriented so that its rotational component changes direction when the lever passes through an intermediate angular position moving from an extreme angular position to the other extreme angular position.
- the lever functions as a pendulum with the additional spring.
- the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the first spring, which tends to accelerate the speed of displacement of the movable contact.
- the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the second spring, so that it is possible to reduce the energy of the control necessary to switch on the circuit breaker.
- the additional spring is coupled to the lever by means of a return pulley which makes it possible to dispose the additional spring near the breaking chamber of the circuit breaker in order to reduce the current. Congestion circuit breaker.
- This additional spring is preferably always armed in compression.
- the lever connected to the additional spring is a triangle-shaped lever having a vertex coincident with the rotary shaft, two other vertices being respectively coupled to the movable contact and the additional spring.
- circuit breaker An embodiment of the circuit breaker according to the invention is described below in more detail and illustrated in the drawings.
- the figure 1 very schematically represents a circuit breaker according to the invention in the closed position.
- the figure 2 very schematically represents the circuit breaker of the figure 1 but in the open position.
- reference numeral 1 designates a breaking chamber of a circuit breaker, for example a breaking chamber with auto-blow and reduced gas compression of an electric circuit breaker.
- the interrupting chamber is generally filled with a dielectric gas at a pressure of a few bars, such as SF6.
- the reference 2 designates a movably mounted contact, for example in translation, in the interrupting chamber.
- This movable contact 2 is moved by a mechanical spring control 3 to open or close the circuit breaker.
- the control 3 comprises in particular a main rotary shaft 4 on which is fixed a drive lever 5 which is coupled to the movable contact 2 by an articulated mechanical connection 6 so that the rotational movement of the shaft 4 and therefore the lever 5 is converted for example into a translational movement of the movable contact 2 in the chamber 1.
- the reference 7 designates the trigger spring of the control 3 used to open the circuit breaker.
- the spring 7 works on the shaft 4 by means of a lever 8 integral with the shaft 4 and a chain 9 stretched between the free end of the lever 8 and the spring 7.
- the spring 7 is armed and exerts a return torque on the lever 8 tending to rotate the shaft 4 in the direction indicated by the arrow O.
- a releasable triggering catch CO is provided to block the rotation of the shaft 4 when the circuit breaker is closed. After an opening order of the circuit breaker, this pawl CO is unlocked, which causes the rotation of the shaft 4 and the angular displacement of the lever 5, which displacement is transformed by the link 6 into a translational movement of the moving contact 2 .
- the mechanical control 3 further comprises a system for closing the circuit breaker, which comprises in particular a spring 10 working on an engagement shaft 11 via a crank wheel 12 integral with the shaft 11.
- This wheel crank 12 is a toothed wheel which comprises a crankpin 13 connected by a chain 14 to the spring 10. It is here coupled to an electric motor 15 via a gear train 16, the motor 15 serving to arm the spring 10 after closing the circuit breaker.
- the shaft 11 carries an engagement cam 17 on which is engaged a roller lever 18 integral with the shaft 4. When the engagement spring 10 is armed, it exerts a restoring force on the wheel 12 tending to rotate the shaft 11 in the direction indicated by the arrow F.
- a releasable locking pawl CF is provided to block the rotation of the engagement shaft 11.
- this pawl CF is unlocked, which causes the rotation of the shaft 11 and the angular displacement of the cam 17 in the direction of the arrow F.
- the rotational movement of the cam 17 is transmitted to the roller lever 18, this which causes the rotation of the shaft 4 in the opposite direction of the arrow O.
- the spring 7, which was expanded in the open position of the circuit breaker, is again armed when the circuit breaker closes due to the rotation of the tree 4.
- the circuit breaker is then closed and the rotation of the shaft 4 is blocked by the triggering paw CO.
- the spring 10 is then turned back on using the motor 15 and the rotation of the shaft 11 is blocked by the locking pawl CF.
- the position of the command 3 is then that of figure 1 . In this position, the control 3 is ready for an opening sequence opening opening of the circuit breaker.
- the spring 7 relaxes and exerts a restoring force causing the shaft 4 to rotate in the direction indicated by the arrow O, which causes a displacement of the movable contact 2 leading to the complete opening of the circuit breaker.
- the kinetic energy of the mobile contact remaining available at the end of opening is consumed in a damper 19 coupled to the shaft 4.
- the circuit breaker is closed by unlocking the pawl CF, which causes the relaxation of the spring 10 and causes the rotation of the shaft 11 in the direction of the arrow F.
- the rotational movement of the shaft 11 is transmitted to the shaft 4 via the cam 17 and the lever 18, but in the opposite direction, which simultaneously causes the displacement of the contact.
- movable 2 to a fully closed position of the circuit breaker and the power of the spring 7 via the lever 8.
- the spring 10 is then switched back on using the motor 15 as indicated above.
- an additional spring 20 is coupled to the shaft 4 to exert on the latter a return torque contributing on the one hand to the displacement of the moving contact at the beginning of opening of the circuit breaker and secondly to the slowdown of this displacement at the end of opening.
- the spring 20 is coupled to the shaft 4 by means of the lever 5 which is here a triangular lever having a vertex coincident with the shaft 4 and two other vertices respectively coupled to the movable contact 2 and the additional spring 20.
- the top P of the lever 5 coupled to the spring 20 occupies two extreme angular positions respectively corresponding to the two positions of the movable contact 2 when the circuit breaker is completely closed or completely open.
- the additional spring 20 is armed to the maximum.
- the extreme angular position of the lever 5 corresponding to the complete closing of the circuit breaker is indicated by the reference E1 while the other extreme angular position of the lever 5 corresponding to the complete opening of the circuit breaker is indicated by the reference E0 on the figure 2 .
- the angular travel of the lever 5 and therefore of the vertex P is about 60 °.
- the force vector exerted by the spring always has the same direction since the spring 20 is always armed either in compression or tension.
- the spring 20 is always more or less reinforced in compression.
- the resultant of this force exerts a torque on the shaft 4 and changes direction between the extreme positions E1 and E0.
- the spring 20 expands first until the lever 5 passes through its position. intermediate angular PM. During this first angular displacement of the lever 5, the restoring torque exerted by the spring 20 on the rotary shaft 4 is added to that exerted by the spring 7 on the same shaft 4, and contributes to driving the shaft 4 in rotation . After crossing the lever 5 of its neutral position, the spring 20 is progressively armed since the restoring torque that it exerts on the lever 5 is reversed. The spring 20 then opposes the angular movement of the lever 5 and thus the displacement of the movable contact 2.
- the intermediate angular position of the lever 5 is chosen such that during its displacement from its intermediate angular position PM to its extreme angular position E0 during an opening phase of the circuit breaker, the spring 2 accumulates and stores part of the kinetic energy of the moving contact which is normally consumed in the damper 19 at the end of opening.
- the energy stored in the spring 20 at the end of opening is restored at the beginning of the subsequent closing phase and is added to that provided by the spring 10 to drive the shaft 4 in rotation.
- the energy stored by the spring 20 at the end of closing is restored at the beginning of the subsequent opening phase and is added to that provided by the spring 7 to drive the shaft 4 in rotation.
- the additional spring 20 is fully armed at the end of each opening or closing operation, thanks to the kinetic energy of the moving contact 2.
- the spring 20 is calibrated in an adequate manner with respect to to the triggering spring 7 and the triggering spring 10 so that it can be cocked until the lever 5 occupies an extreme angular position.
- the spring 20 is disposed inside the mechanical control 3, and is coupled to the lever 5 by a chain engaged on a return pulley 21.
- a chain engaged on a return pulley 21 Such an arrangement makes it possible to place the spring 20 close to the chamber of cut to reduce the size of the circuit breaker.
- the lever 5 can also be coupled to the spring 20 by an articulated connection.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
L'invention porte sur un disjoncteur électrique haute tension, tel qu'un disjoncteur à auto-soufflage et à gaz comprimé, comprenant une chambre de coupure avec au moins un contact mobile dans la chambre qui est actionné au moyen d'une commande mécanique à ressorts pour ouvrir ou fermer le disjoncteur, la commande incluant au moins un premier ressort exerçant une force tendant à déplacer le contact mobile pour ouvrir le disjoncteur et un second ressort exerçant une force tendant à déplacer le contact mobile pour fermer le disjoncteur tout en armant le premier ressort, et dans lequel un ressort additionnel est prévu pour exercer une force supplémentaire qui se cumule à la force exercée par le premier ressort au début de l'ouverture du disjoncteur.The invention relates to a high-voltage electrical circuit breaker, such as a self-blowing and compressed gas circuit breaker, comprising a breaking chamber with at least one movable contact in the chamber which is actuated by means of a mechanical control device. springs for opening or closing the circuit breaker, the control including at least a first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while cocking the circuit breaker; first spring, and wherein an additional spring is provided to exert an additional force which accumulates with the force exerted by the first spring at the beginning of the opening of the circuit breaker.
Un tel disjoncteur est déjà connu du
Un but de l'invention est de proposer une disposition particulière d'un disjoncteur tel que défini plus haut, qui ne nécessite pas d'énergie supplémentaire pour armer le ressort additionnel lors de la fermeture.An object of the invention is to provide a particular arrangement of a circuit breaker as defined above, which does not require additional energy to arm the additional spring during closing.
Un autre but de l'invention est de proposer une disposition particulière d'un tel disjoncteur qui permet en outre de récupérer et stocker une partie de l'énergie cinétique du contact mobile en fin d'ouverture ou de fermeture, pour l'utiliser respectivement en début d'une opération subséquente de fermeture ou d'ouverture.Another object of the invention is to propose a particular arrangement of such a circuit breaker which also makes it possible to recover and store part of the kinetic energy of the mobile contact at the end of opening or closing, for use respectively at the beginning of a subsequent closing or opening operation.
A cet effet, l'invention a pour objet un disjoncteur électrique comprenant une chambre de coupure avec au moins un contact mobile dans la chambre qui est actionné au moyen d'une commande mécanique à ressorts pour ouvrir ou fermer le disjoncteur, la commande incluant au moins un premier ressort exerçant une force tendant à déplacer le contact mobile pour ouvrir le disjoncteur et un second ressort exerçant une force tendant à déplacer le contact mobile pour fermer le disjoncteur tout en armant le premier ressort, et dans lequel un ressort additionnel est prévu pour exercer une force supplémentaire qui se cumule à la force exercée par le premier ressort au début de l'ouverture du disjoncteur, caractérisé en ce que le ressort additionnel est monté de telle façon qu'avant la fin de l'ouverture du disjoncteur, la résultante de la force exercée par le ressort additionnel pour déplacer le contact mobile s'inverse pour s'opposer au déplacement du contact mobile.For this purpose, the subject of the invention is an electric circuit breaker comprising an interrupting chamber with at least one movable contact in the chamber which is actuated by means of a mechanical spring mechanism for opening or closing the circuit breaker, the control including in the at least one first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while arming the first spring, and wherein an additional spring is provided for exert an additional force that is cumulative to the force exerted by the first spring at the beginning of the opening of the circuit breaker, characterized in that the additional spring is mounted such that before the end of the opening of the circuit breaker, the resultant of the force exerted by the additional spring to move the moving contact is reversed to oppose the movement of the moving contact.
Ainsi, en fin d'ouverture du disjoncteur, le ressort additionnel est armé par le déplacement du contact mobile et il n'est donc pas nécessaire d'utiliser une partie de l'énergie du second ressort de la commande pour réarmer le ressort additionnel lors de la fermeture du disjoncteur. Le contact mobile se déplaçant essentiellement du fait de sa propre énergie cinétique en fin d'ouverture, le ressort additionnel peut servir à récupérer et stocker une partie de cette énergie cinétique qui autrement est consommée classiquement dans un dispositif amortisseur.Thus, at the end of opening of the circuit breaker, the additional spring is armed by the displacement of the moving contact and it is therefore not necessary to use a portion of the energy of the second spring of the control to reset the additional spring when closing the circuit breaker. Since the moving contact essentially moves due to its own kinetic energy at the end of the opening, the additional spring can be used to recover and store a part of this kinetic energy that is otherwise conventionally consumed in a damping device.
Dans un mode de réalisation particulier du disjoncteur selon l'invention, la commande comprend un arbre rotatif couplé en mouvement au contact mobile et entraîné en rotation alternativement par le premier ou le second ressort. Le ressort additionnel est accouplé à l'arbre rotatif par l'intermédiaire d'un levier fixé à l'arbre et occupant deux positions angulaires extrêmes correspondant aux positions du contact mobile quand le disjoncteur est respectivement ouvert ou fermé. La force exercée par le ressort additionnel sur le levier est orientée de telle façon que sa composante rotationnelle change de sens quand le levier passe par une position angulaire intermédiaire en se déplaçant d'une position angulaire extrême vers l'autre position angulaire extrême. Ainsi, le levier fonctionne comme un pendule avec le ressort additionnel. Au début de l'ouverture, la résultante de la force exercée par le ressort additionnel se cumule à celle de la force exercée par le premier ressort, ce qui tend à accélérer la vitesse de déplacement du contact mobile. Au début de la fermeture, la résultante de la force exercée par le ressort additionnel se cumule à celle de la force exercée par le second ressort, de sorte qu'il est possible de diminuer l'énergie de la commande nécessaire pour enclencher le disjoncteur.In a particular embodiment of the circuit breaker according to the invention, the control comprises a rotary shaft coupled in motion to the movable contact and rotated alternately by the first or the second spring. The additional spring is coupled to the rotary shaft via a lever attached to the shaft and occupying two extreme angular positions corresponding to the positions of the movable contact when the circuit breaker is respectively open or closed. The force exerted by the additional spring on the lever is oriented so that its rotational component changes direction when the lever passes through an intermediate angular position moving from an extreme angular position to the other extreme angular position. Thus, the lever functions as a pendulum with the additional spring. At the beginning of the opening, the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the first spring, which tends to accelerate the speed of displacement of the movable contact. At the beginning of the closing, the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the second spring, so that it is possible to reduce the energy of the control necessary to switch on the circuit breaker.
Dans un mode de réalisation particulier du disjoncteur selon l'invention, le ressort additionnel est couplé au levier par l'intermédiaire d'une poulie de renvoi ce qui permet de disposer le ressort additionnel à proximité de la chambre de coupure du disjoncteur pour diminuer l'encombrement du disjoncteur. Ce ressort additionnel est préférablement armé toujours en compression.In a particular embodiment of the circuit breaker according to the invention, the additional spring is coupled to the lever by means of a return pulley which makes it possible to dispose the additional spring near the breaking chamber of the circuit breaker in order to reduce the current. Congestion circuit breaker. This additional spring is preferably always armed in compression.
Dans un mode de réalisation particulier du disjoncteur selon l'invention, le levier relié au ressort additionnel est un levier en forme de triangle ayant un sommet confondu avec l'arbre rotatif, deux autres sommets étant respectivement couplés au contact mobile et au ressort additionnel.In a particular embodiment of the circuit breaker according to the invention, the lever connected to the additional spring is a triangle-shaped lever having a vertex coincident with the rotary shaft, two other vertices being respectively coupled to the movable contact and the additional spring.
Un exemple de réalisation du disjoncteur selon l'invention est décrit ci-après plus en détails et illustré sur les dessins.An embodiment of the circuit breaker according to the invention is described below in more detail and illustrated in the drawings.
La
La
Sur les
La référence 2 désigne un contact monté mobile, par exemple en translation, dans la chambre de coupure. Ce contact mobile 2 est déplacé par une commande mécanique 3 à ressorts pour ouvrir ou fermer le disjoncteur. Dans l'exemple illustré sur les figures, la commande 3 comprend notamment un arbre rotatif principal 4 sur lequel est fixé un levier d'entraînement 5 qui est accouplé au contact mobile 2 par une liaison mécanique articulée 6 de sorte que le mouvement de rotation de l'arbre 4 et donc du levier 5 est transformé par exemple en un mouvement de translation du contact mobile 2 dans la chambre 1.The reference 2 designates a movably mounted contact, for example in translation, in the interrupting chamber. This movable contact 2 is moved by a
La référence 7 désigne le ressort de déclenchement de la commande 3 servant à ouvrir le disjoncteur. Le ressort 7 travaille sur l'arbre 4 par l'intermédiaire d'un levier 8 solidaire de l'arbre 4 et d'une chaîne 9 tendue entre l'extrémité libre du levier 8 et le ressort 7. En position de fermeture du disjoncteur, comme représenté à la
La commande mécanique 3 comprend en outre un système pour la fermeture du disjoncteur, qui comporte notamment un ressort 10 travaillant sur un arbre d'enclenchement 11 par l'intermédiaire d'une roue à manivelle 12 solidaire de l'arbre 11. Cette roue à manivelle 12 est une roue dentée qui comporte un maneton de manivelle 13 relié par une chaîne 14 au ressort 10. Elle est ici couplée à un moteur électrique 15 par l'intermédiaire d'un train d'engrenages 16, le moteur 15 servant à armer le ressort 10 après la fermeture du disjoncteur. L'arbre 11 porte une came d'enclenchement 17 sur laquelle vient s'engager un levier à galet 18 solidaire de l'arbre 4. Quand le ressort d'enclenchement 10 est armé, il exerce une force de rappel sur la roue 12 tendant à entraîner en rotation l'arbre 11 dans le sens indiqué par la flèche F. Un cliquet d'enclenchement déverrouillable CF est prévu pour bloquer la rotation de l'arbre d'enclenchement 11. Après un ordre de fermeture du disjoncteur, à partir d'une position d'ouverture telle que représentée à la
En position initiale de la commande mécanique à ressorts, les deux ressorts 7 et 10 sont détendus et le disjoncteur est ouvert. Une rotation de la roue 12 entraînée par le moteur 15 selon la direction indiquée par la flèche F provoque la mise en tension du ressort 10 de sorte que la commande se trouve alors dans la position illustrée sur la
Plus particulièrement, suite à la libération du cliquet de déclenchement CO, le ressort 7 se détend et exerce une force de rappel entraînant en rotation l'arbre 4 dans le sens indiqué par la flèche O ce qui provoque un déplacement du contact mobile 2 conduisant à l'ouverture complète du disjoncteur. L'énergie cinétique du contact mobile restant disponible en fin d'ouverture est consommée dans un amortisseur 19 couplé à l'arbre 4. Le disjoncteur est refermé en déverrouillant le cliquet CF, ce qui entraîne la détente du ressort 10 et provoque la rotation de l'arbre 11 dans le sens de la flèche F. Le mouvement de rotation de l'arbre 11 est transmis à l'arbre 4 via la came 17 et le levier 18, mais en sens inverse, ce qui provoque simultanément le déplacement du contact mobile 2 jusqu'à une position de fermeture complète du disjoncteur et la mise sous tension du ressort 7 via le levier 8. Le ressort 10 est ensuite remis sous tension à l'aide du moteur 15 comme indiqué plus haut.More particularly, following the release of the trigger paw CO, the
Selon l'invention, un ressort additionnel 20 est accouplé à l'arbre 4 pour exercer sur ce dernier un couple de rappel contribuant d'une part au déplacement du contact mobile en début d'ouverture du disjoncteur et d'autre part au ralentissement de ce déplacement en fin d'ouverture. En particulier, le ressort 20 est accouplé à l'arbre 4 par l'intermédiaire du levier 5 qui est ici un levier en forme de triangle ayant un sommet confondu avec l'arbre 4 et deux autres sommets respectivement couplés au contact mobile 2 et au ressort additionnel 20.According to the invention, an
Le sommet P du levier 5 couplé au ressort 20 occupe deux positions angulaires extrêmes correspondant respectivement aux deux positions du contact mobile 2 quand le disjoncteur est complètement fermé ou complètement ouvert. Quand le levier 5 occupe l'une ou l'autre de ses deux positions angulaires extrêmes, le ressort additionnel 20 est armé au maximum. Sur la
Quand le levier 5 se déplace de la position angulaire extrême à l'autre position extrême, lors d'une phase d'ouverture ou de fermeture, le ressort 20 se détend d'abord jusqu'à ce que le levier 5 passe par sa position angulaire intermédiaire PM. Pendant ce premier déplacement angulaire du levier 5, le couple de rappel exercé par le ressort 20 sur l'arbre rotatif 4 s'ajoute à celui exercé par le ressort 7 sur ce même arbre 4, et contribue à entraîner l'arbre 4 en rotation. Après franchissement par le levier 5 de sa position de point mort, le ressort 20 est progressivement armé puisque le couple de rappel qu'il exerce sur le levier 5 s'inverse. Le ressort 20 s'oppose alors au mouvement angulaire du levier 5 et donc au déplacement du contact mobile 2.When the
La position angulaire intermédiaire du levier 5 est choisie de telle façon que pendant son déplacement de sa position angulaire intermédiaire PM vers sa position angulaire extrême E0 lors d'une phase d'ouverture du disjoncteur, le ressort 2 accumule et stocke une partie de l'énergie cinétique du contact mobile qui est normalement consommée dans l'amortisseur 19 en fin d'ouverture. L'énergie stockée dans le ressort 20 en fin d'ouverture est restituée au début de la phase de fermeture subséquente et s'ajoute à celle fournie par le ressort 10 pour entraîner l'arbre 4 en rotation. Inversement, l'énergie stockée par le ressort 20 en fin de fermeture est restituée au début de la phase d'ouverture subséquente et s'ajoute à celle fournie par le ressort 7 pour entraîner l'arbre 4 en rotation.The intermediate angular position of the
Avec cette construction, le ressort additionnel 20 est armé à son maximum à la fin de chaque opération d'ouverture ou de fermeture, grâce à l'énergie cinétique du contact mobile 2. Bien entendu, le ressort 20 est calibré de façon adéquate par rapport aux ressorts de déclenchement 7 et d'enclenchement 10 de façon à pouvoir être armé jusqu'à ce que le levier 5 occupe une position angulaire extrême.With this construction, the
De préférence, le ressort 20 est disposé à l'intérieur de la commande mécanique 3, et est couplé au levier 5 par une chaîne engagée sur une poulie de renvoi 21. Une telle disposition permet de placer le ressort 20 à proximité de la chambre de coupure pour diminuer l'encombrement du disjoncteur. Le levier 5 peut aussi être couplé au ressort 20 par une liaison articulée.Preferably, the
Claims (5)
- An electric circuit-breaker including an interrupting chamber (1) with at least one moving contact (2) inside the chamber, the moving contact being actuated by means of a springloaded mechanical control mechanism (3) so as to open or close the circuit-breaker, the control mechanism including at least one first spring (7) exerting a force tending to move the moving contact to open the circuit-breaker, and a second spring (10) exerting a force tending to move the moving contact to close the circuit breaker white loading the first spring (7), and in which circuit-breaker an additional spring (20) is provided for exerting an additional force that is added to the force exerted by the first spring (7) at the beginning of circuit-breaker opening, characterized in that the additional spring (20) is mounted so that, before the end of circuit-breaker opening, the resultant of the force exerted by the additional spring for moving the moving contact is reversed so as to oppose the movement of the moving contact.
- A circuit-breaker according to claim 1 in which the control mechanism includes a rotary shaft (4) movably coupled to the moving contact (2) and rotated alternately by the first spring (7) and by the second spring (10) and in which the additional spring (20) is coupled to the rotary (4) shaft via a lever (5) fixed to the rotary shaft and occupying two end angular positions (E0, E1) corresponding to the positions of the moving contact when the circuit-breaker is respectively open or closed, the force exerted by the additional spring (20) on the level (5) being oriented so that its rotational component changes direction when the lever (5) goes through an intermediate angular position (PM) as it goes from one end angular position towards the other end angular position.
- A circuit-breaker according to claim 2, in which the additional spring (20) is couple to the lever (5) via a pulley (21).
- A circuit-breaker according to claim 3, in which the additional spring (20) is loaded in Compression.
- A circuit-breaker according to any of claims 2-4, in which said lever (5) is a triangular-shaped lever or bell-crank that has one vertex that coincides with the rotary shaft and two other vertices coupled respectively to the moving contact (2) and to the additional spring (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0102784A FR2821696B1 (en) | 2001-03-01 | 2001-03-01 | HIGH VOLTAGE CIRCUIT BREAKER HAVING A SPRING DRIVE WITH AN ADDITIONAL ENERGY RECOVERY SPRING |
FR0102784 | 2001-03-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1237169A1 EP1237169A1 (en) | 2002-09-04 |
EP1237169B1 true EP1237169B1 (en) | 2010-04-07 |
Family
ID=8860596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02290446A Expired - Lifetime EP1237169B1 (en) | 2001-03-01 | 2002-02-22 | High voltage circuir breaker with spring actuator with an additional energy recuperating spring |
Country Status (4)
Country | Link |
---|---|
US (1) | US6667452B2 (en) |
EP (1) | EP1237169B1 (en) |
DE (1) | DE60235855D1 (en) |
FR (1) | FR2821696B1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7368677B2 (en) * | 2005-12-14 | 2008-05-06 | Eaton Corporation | Reverse bias hatchet reset spring |
DE102008035871B4 (en) * | 2008-08-01 | 2011-03-24 | Abb Technology Ag | Cam disc and spring travel switch for a spring-loaded drive and spring-loaded drive |
EP2317529B1 (en) | 2009-11-03 | 2017-04-19 | ABB Schweiz AG | A spring operated actuator for an electrical switching apparatus |
ES2462751T3 (en) | 2009-11-03 | 2014-05-26 | Abb Technology Ag | A spring operated actuator for an electrical switching apparatus |
ES2465000T3 (en) | 2009-11-03 | 2014-06-04 | Abb Technology Ag | A spring operated actuator for an electrical switching apparatus |
WO2013057936A1 (en) * | 2011-10-21 | 2013-04-25 | 株式会社 東芝 | Gas circuit breaker |
CN104952650B (en) * | 2014-03-31 | 2018-02-23 | 西门子公司 | Clutch and its gas insulation breaker for energy storage device in gas insulation breaker |
US9373456B2 (en) | 2014-04-24 | 2016-06-21 | Eaton Corporation | Circuit breakers with clock spring drives and/or multi-lobe drive cams and related actuators and methods |
US9472359B2 (en) | 2014-04-24 | 2016-10-18 | Eaton Corporation | Trip latch assemblies for circuit breakers and related circuit breakers |
EP3208817B1 (en) | 2016-02-16 | 2018-11-14 | ABB Schweiz AG | A spring operated actuator for an electric apparatus |
DE102016210466B4 (en) * | 2016-06-14 | 2019-11-14 | Siemens Aktiengesellschaft | Spring-loaded drive for a high-voltage circuit-breaker and method for operating the spring-loaded drive |
EP3264432B1 (en) | 2016-06-28 | 2019-01-09 | ABB Schweiz AG | A spring operated actuator |
DE102019204443A1 (en) * | 2019-03-29 | 2020-10-01 | Siemens Aktiengesellschaft | Circuit breaker system |
DE102020209017B4 (en) * | 2020-07-20 | 2025-03-27 | Siemens Aktiengesellschaft | Fault detection in spring-loaded systems of medium-voltage circuit breakers |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE756085C (en) * | 1940-07-27 | 1953-02-02 | Siemens Schuckertwerke A G | Drive with energy storage device for devices with back and forth movement separated by standstill breaks, e.g. B. for electrical switches |
GB708191A (en) * | 1951-04-23 | 1954-04-28 | Reyrolle A & Co Ltd | Improvements relating to spring-closed electric circuit-breakers |
JPS5422581A (en) * | 1977-07-21 | 1979-02-20 | Mitsubishi Electric Corp | Switching device |
ATE80494T1 (en) * | 1987-12-14 | 1992-09-15 | Sprecher Energie Ag | SPRING-LOAD MECHANISM FOR A HIGH-VOLTAGE SWITCH. |
EP0658909B1 (en) * | 1993-12-13 | 1996-10-23 | GEC Alsthom T&D AG | Drive mechanism for a power circuit breaker |
FR2763740B1 (en) * | 1997-05-26 | 1999-07-16 | Gec Alsthom T & D Ag | SPRING DRIVE MECHANISM FOR A SWITCHING APPARATUS, IN PARTICULAR A CIRCUIT BREAKER |
FR2770929B1 (en) * | 1997-11-13 | 2000-01-28 | Alsthom Gec | SPRING DRIVE MECHANISM FOR A SWITCHING APPARATUS, IN PARTICULAR A CIRCUIT BREAKER |
-
2001
- 2001-03-01 FR FR0102784A patent/FR2821696B1/en not_active Expired - Fee Related
-
2002
- 2002-02-22 EP EP02290446A patent/EP1237169B1/en not_active Expired - Lifetime
- 2002-02-22 DE DE60235855T patent/DE60235855D1/en not_active Expired - Lifetime
- 2002-02-26 US US10/082,317 patent/US6667452B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2821696B1 (en) | 2003-04-25 |
FR2821696A1 (en) | 2002-09-06 |
EP1237169A1 (en) | 2002-09-04 |
DE60235855D1 (en) | 2010-05-20 |
US6667452B2 (en) | 2003-12-23 |
US20020121503A1 (en) | 2002-09-05 |
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