EP0238847B1 - Operating device for circuit-breaker - Google Patents

Operating device for circuit-breaker Download PDF

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Publication number
EP0238847B1
EP0238847B1 EP87102331A EP87102331A EP0238847B1 EP 0238847 B1 EP0238847 B1 EP 0238847B1 EP 87102331 A EP87102331 A EP 87102331A EP 87102331 A EP87102331 A EP 87102331A EP 0238847 B1 EP0238847 B1 EP 0238847B1
Authority
EP
European Patent Office
Prior art keywords
spring
wheel
point
chain
axis
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
Application number
EP87102331A
Other languages
German (de)
French (fr)
Other versions
EP0238847A1 (en
Inventor
Edmond Thuries
Jean-Paul Masson
Michel Perret
Satoru Yanabu
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.)
Alstom Holdings SA
Original Assignee
GEC Alsthom 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 SA filed Critical GEC Alsthom SA
Publication of EP0238847A1 publication Critical patent/EP0238847A1/en
Application granted granted Critical
Publication of EP0238847B1 publication Critical patent/EP0238847B1/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18856—Oscillating to oscillating
    • Y10T74/18864—Snap action

Definitions

  • the present invention relates to a device for actuating a circuit breaker, of the type comprising a maneuvering wheel whose rotation causes the displacement of the movable cut-off members of the circuit breaker.
  • a chain (or a cable) is fixed at a point close to the periphery of the wheel.
  • the chain passes over a pulley and is fixed to a first end of a spring whose other end is fixed to a fixed point.
  • a rotation of the wheel by a certain angle makes it possible to band the spring and thus to store energy used later for the operation of the circuit breaker.
  • a hooking member keeps the wheel in a fixed position when the spring is tensioned.
  • electromagnet which is used to act on the latching member during the operation of the circuit breaker, to release the wheel. It is planned to interpose between the latching member and the electromagnet one or more stages of effort reduction. In this way it is possible to use a small electromagnet actuated by a weak control current.
  • the hooking and gear reduction members are mechanical parts, the development of which is delicate and expensive.
  • circuit breakers having more powerful mechanical controls, therefore more powerful or more springs.
  • the force exerted by the attachment system on the wheel is then increased; it follows that the release of the wheel requires a greater effort.
  • An object of the present invention is to provide an actuating device which, while offering increased operating energy, allows the use of the hooking members, reduction stages and electromagnets used by devices for actuation of lesser power.
  • the document FR-A-1,561,459 describes a mechanism for operating a circuit breaker.
  • the technical problem to be solved is to avoid braking of the moving armature of the circuit breaker at the end of the closing stroke.
  • the device of this patent does not allow the energy of the springs to be increased without exerting additional effort on the hooks.
  • the subject of the invention is a device for actuating a circuit breaker comprising an operating member, the rotation of which causes the displacement of the movable breaking members, said member being connected to a first spring connected to a first point of the member of operation and a second spring connected to a second point of the operating member, the axis of rotation of said member being located, when the two springs are bandaged, relative to the axis of application of the force of the first spring and to the axis of application of the force of the second spring so that the action of the first spring takes precedence over the action of the second spring, device characterized in that the operating member is a wheel, the axis of rotation is disposed at its center, said wheel being connected to the first spring by a first chain passing over a first pulley and fixed at a point close to the periphery of said wheel, and said wheel also being connected to the s econd spring connected by a second chain passing through a second pulley and fixed at the same point of said wheel, the wheel being kept fixed when the spring
  • Figure 1 schematically shows the drive device of a circuit breaker, according to the prior art.
  • a chain C1 is fixed passing over a pulley P1 and fixed to a spring S1.
  • An attachment member K1, controlled by an electromagnet E1 maintains the wheel in a fixed position when the spring is tensioned.
  • the effort reduction stages have not been shown.
  • the force exerted on the attachment system is proportional to it, ie KF, K being a factor corresponding to the distance between the line A1T1 and the point 0 in the bandaged position.
  • the technical problem which arises is to build a 145 kV circuit breaker or more using elements of the existing control device of a 72 kV circuit breaker. But it is essential to have greater maneuvering energy. If, to obtain a higher operating energy, a more powerful spring is used, for example of force 2F, the force exerted on the attachment system will be 2KF, requiring a more powerful electromagnet with possibly the addition of '' an additional reduction gear.
  • the spring S1 is replaced by a spring S'1 having a force F.
  • the chain strand A1T2 extending from point A1 to the pulley P2 is, when the springs S'1 and S2 are bandaged, located on the axis 0 of the wheel. In this way, the tangential force exerted on the wheel, therefore the latching force, remains equal to KF.
  • the spring force S2 is chosen to allow correct operation of the circuit breaker. It can be greater than that of the first spring S'1. In a preferred embodiment, this force is 2F.
  • the invention applies both to springs working in tension (as in FIG. 2) and to springs working in compression.
  • FIG. 3 represents a variant of the device of FIG. 2, in which the springs S'1 and S2 working in tension have been replaced by springs Z1 and Z2 working in compression and placed in cylinders G1 and G2, respectively.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Description

La présente invention est relative à un dispositif d'actionnement d'un disjoncteur, du type comprenant une roue de manoeuvre dont la rotation entraîne le déplacement des organes mobiles de coupure du dis joncteur. Dans ce type de dispositif d'actionnement une chaîne (ou un câble) est fixée à un point voisin de la périphérie de la roue. La chaîne passe sur une poulie et est fixée à une première extrémité d'un ressort dont l'autre extrémité est fixé à un point fixe.The present invention relates to a device for actuating a circuit breaker, of the type comprising a maneuvering wheel whose rotation causes the displacement of the movable cut-off members of the circuit breaker. In this type of actuating device a chain (or a cable) is fixed at a point close to the periphery of the wheel. The chain passes over a pulley and is fixed to a first end of a spring whose other end is fixed to a fixed point.

Un tel dispositif est décrit dans les documents GB-A-708 191 et FR-A-1.561.459.Such a device is described in documents GB-A-708 191 and FR-A-1,561,459.

Une rotation de la roue d'un certain angle permet de bander le ressort et d'emmagasiner ainsi une énergie utilisée ultérieurement pour la manoeuvre du disjoncteur.A rotation of the wheel by a certain angle makes it possible to band the spring and thus to store energy used later for the operation of the circuit breaker.

Un organe d'accrochage maintient la roue en position fixe lorsque le ressort est bandé.A hooking member keeps the wheel in a fixed position when the spring is tensioned.

Généralement c'est un électro-aimant qui est utilisé pour agir sur l'organe d'accrochage lors de la manoeuvre du disjoncteur, pour libérer la roue. Il est prévu d'interposer entre l'organe d'accrochage et l'électro-aimant un ou plusieurs étages de démultiplication d'effort. De la sorte on peut utiliser un petit électro-aimant actionné par un faible courant de commande.Generally it is an electromagnet which is used to act on the latching member during the operation of the circuit breaker, to release the wheel. It is planned to interpose between the latching member and the electromagnet one or more stages of effort reduction. In this way it is possible to use a small electromagnet actuated by a weak control current.

Les organes d'accrochage et de démultiplication d'effort sont des pièces mécaniques dont la mise au point est délicate et onéreuse.The hooking and gear reduction members are mechanical parts, the development of which is delicate and expensive.

Or, l'augmentation des valeurs des courants à couper par les disjoncteurs nécessite l'emploi de disjoncteurs ayant des commandes mécaniques plus puissantes, donc des ressorts plus puissants ou plus nombreux.However, the increase in the values of the currents to be cut by the circuit breakers requires the use of circuit breakers having more powerful mechanical controls, therefore more powerful or more springs.

L'effort exercé par le système d'accrochage sur la roue est alors accru ; il en résulte que la libération de la roue nécessite un effort plus important.The force exerted by the attachment system on the wheel is then increased; it follows that the release of the wheel requires a greater effort.

Un but de la présente invention est de réaliser un dispositif d'actionnement qui, tout en offrant une énergie de manoeuvre accrue, permette l'emploi des organes d'accrochage, des étages de démultiplication et des électro-aimants utilisés par des dispositifs d'actionnement de moindre puissance.An object of the present invention is to provide an actuating device which, while offering increased operating energy, allows the use of the hooking members, reduction stages and electromagnets used by devices for actuation of lesser power.

Ce problème n'est pas résolu dans les deux documents cités plus haut.This problem is not resolved in the two documents cited above.

Dans le document GB-A-708 191, le problème technique à résoudre est de ne pas utiliser de gros ressorts et de mieux utiliser sur la course des moteurs l'énergie de déclenchement. Ce document ne resoud pas le problème d'avoir une faible force d'accrochage.In the document GB-A-708 191, the technical problem to be solved is not to use large springs and to make better use of the tripping energy over the travel of the motors. This document does not solve the problem of having a weak gripping force.

Le document FR-A-1.561.459 décrit un mécanisme de manoeuvre d'un disjoncteur. Le problème technique à résoudre est d'éviter un freinage de l'armature mobile du disjoncteur en fin de course de fermeture. Le dispositif de ce brevet ne permet pas d'augmenter l'énergie des ressorts sans exercer d'effort supplémentaire sur les accrochages.The document FR-A-1,561,459 describes a mechanism for operating a circuit breaker. The technical problem to be solved is to avoid braking of the moving armature of the circuit breaker at the end of the closing stroke. The device of this patent does not allow the energy of the springs to be increased without exerting additional effort on the hooks.

L'invention a pour object un dispositif d'actionnement d'un disjoncteur comprenant un organe de manoeuvre dont la rotation entraîne le déplacement des organes de coupure mobiles, ledit organe étant relié à un premier ressort relié à un premier point de l'organe de manoeuvre et à un second ressort relié à un second point de l'organe de manoeuvre, l'axe de rotation dudit organe étant situé, lorsque les deux ressorts sont bandés, par rapport à l'axe d'application de la force du premier ressort et à l'axe d'application de la force du second ressort de telle façon que l'action du premier ressort est prépondérant sur l'action du second ressort, dispositif caractérisé en ce que l'organe de manoeuvre est une roue dont l'axe de rotation est disposé en son centre, ladite roue étant reliée au premier ressort par une première chaîne passant sur une première poulie et fixée à un point voisin de la périphérie de ladite roue, et ladite roue étant également reliée au second ressort relié par une seconde chaîne passant par une seconde poulie et fixée au même point de ladite roue, la roue étant maintenue fixe lorsque les ressorts sont bandés grâce à un organe d'accrochage dont l'effacement libère la roue en rotation, le brin de la seconde chaîne reliant le second ressort à la roue passant par l'axe de la roue, dans cette position.The subject of the invention is a device for actuating a circuit breaker comprising an operating member, the rotation of which causes the displacement of the movable breaking members, said member being connected to a first spring connected to a first point of the member of operation and a second spring connected to a second point of the operating member, the axis of rotation of said member being located, when the two springs are bandaged, relative to the axis of application of the force of the first spring and to the axis of application of the force of the second spring so that the action of the first spring takes precedence over the action of the second spring, device characterized in that the operating member is a wheel, the axis of rotation is disposed at its center, said wheel being connected to the first spring by a first chain passing over a first pulley and fixed at a point close to the periphery of said wheel, and said wheel also being connected to the s econd spring connected by a second chain passing through a second pulley and fixed at the same point of said wheel, the wheel being kept fixed when the springs are bandaged thanks to a hooking member whose erasure frees the rotating wheel, the strand of the second chain connecting the second spring to the wheel passing through the axis of the wheel, in this position.

L'invention est précisée par la description ci-après de divers modes de réalisation de l'invention, en référence au dessin annexé dans lequel:

  • la figure 1 est un schéma expliquant la constitution et le fonctionnement d'un dispositif d'actionnement selon l'art antérieur,
  • la figure 2 est un schéma du dispositif d'actionnement selon un premier mode de réalisation de l'invention,
  • la figure 3 est un schéma du dispositif d'actionnement selon une variante de réalisation.
The invention is clarified by the following description of various embodiments of the invention, with reference to the appended drawing in which:
  • FIG. 1 is a diagram explaining the constitution and the operation of an actuation device according to the prior art,
  • FIG. 2 is a diagram of the actuation device according to a first embodiment of the invention,
  • Figure 3 is a diagram of the actuating device according to an alternative embodiment.

La figure 1 représente schématiquement le dispositif d'entraînement d'un disjoncteur, selon l'art antérieur.Figure 1 schematically shows the drive device of a circuit breaker, according to the prior art.

Il comprend une roue R tournant autour d'un axe 0.It includes a wheel R rotating around an axis 0.

A un point A1 voisin de la périphérie de la roue, est fixée une chaîne C1 passant sur une poulie P1 et fixée à un ressort S1. Un organe d'accrochage K1, commandé par un électro-aimant E1 maintient la roue en position fixe lorsque le ressort est bandé. Les étages de démultiplcation d'effort n'ont pas été représentés.At a point A1 near the periphery of the wheel, a chain C1 is fixed passing over a pulley P1 and fixed to a spring S1. An attachment member K1, controlled by an electromagnet E1 maintains the wheel in a fixed position when the spring is tensioned. The effort reduction stages have not been shown.

Si la force du ressort est égal à F, l'effort exercé sur le système d'accrochage lui est proportionnel, soit KF, K étant un facteur correspondant à la distance entre la ligne A1T1 et le point 0 en position bandée.If the spring force is equal to F, the force exerted on the attachment system is proportional to it, ie KF, K being a factor corresponding to the distance between the line A1T1 and the point 0 in the bandaged position.

Le problème technique qui se pose est de construire un disjoncteur 145 kV ou plus en utilisant des éléments du dispositif de commande existant d'un disjoncteur 72 kV. Mais il est indispensable de disposer d'une énergie de manoeuvre plus grande. Si, pour obtenir une énergie de manoeuvre plus importante, on utilise un ressort plus puissant, par exemple de force 2F, l'effort exercé sur le système d'accrochage sera 2KF, nécessitant un électro-aimant plus puissant avec éventuellement l'adjonction d'un étage supplémentaire de démultiplication.The technical problem which arises is to build a 145 kV circuit breaker or more using elements of the existing control device of a 72 kV circuit breaker. But it is essential to have greater maneuvering energy. If, to obtain a higher operating energy, a more powerful spring is used, for example of force 2F, the force exerted on the attachment system will be 2KF, requiring a more powerful electromagnet with possibly the addition of '' an additional reduction gear.

On évite cet inconvénient dans le dispositif d'actionnement de l'invention dont un mode de réalisation est représenté dans la figure 2.This drawback is avoided in the actuation device of the invention, an embodiment of which is shown in FIG. 2.

On remplace, dans le dispositif de l'art antérieur comprenant la roue R, le ressort S1, la chaîne C1 et la poulie P1, le ressort S1 par un ressort S'1 ayant une force F.In the device of the prior art comprising the wheel R, the spring S1, the chain C1 and the pulley P1, the spring S1 is replaced by a spring S'1 having a force F.

On adjoint à ce dispositif un second ressort S2 relié au point A1 par une chaîne C2 passant sur une poulie P2.To this device is added a second spring S2 connected to point A1 by a chain C2 passing over a pulley P2.

Conformément à l'invention, le brin de chaîne A1T2 s'étendant du point A1 à la poulie P2 est, lorsque les ressorts S'1 et S2 sont bandés, situé sur l'axe 0 de la roue. De la sorte, l'effort tangentiel exercé sur la roue, donc l'effort d'accrochage, reste égal à KF.According to the invention, the chain strand A1T2 extending from point A1 to the pulley P2 is, when the springs S'1 and S2 are bandaged, located on the axis 0 of the wheel. In this way, the tangential force exerted on the wheel, therefore the latching force, remains equal to KF.

Dès la libération de l'organe d'accrochage K1, le ressort S2 devient moteur et son effet s'additionne à celui du ressort S'1. La force du ressort S2 est choisie pour permettre la manoeuvre correcte du disjoncteur. Elle peut être supérieure à celle du premier ressort S'1. Dans une réalisation préférée, cette force est de 2F.As soon as the hooking member K1 is released, the spring S2 becomes a motor and its effect is added to that of the spring S'1. The spring force S2 is chosen to allow correct operation of the circuit breaker. It can be greater than that of the first spring S'1. In a preferred embodiment, this force is 2F.

Bien entendu, l'invention s'applique aussi bien aux ressorts travaillant à la traction (comme dans la figure 2) qu'aux ressorts travaillant à la compression.Of course, the invention applies both to springs working in tension (as in FIG. 2) and to springs working in compression.

La figure 3 représente une variante du dispositif de la figure 2, dans laquelle on a remplacé les ressorts S'1 et S2 travaillant à la traction respectivement par des ressorts Z1 et Z2 travaillant à la compression et placés dans des cylindres G1 et G2.FIG. 3 represents a variant of the device of FIG. 2, in which the springs S'1 and S2 working in tension have been replaced by springs Z1 and Z2 working in compression and placed in cylinders G1 and G2, respectively.

Claims (2)

  1. A circuit breaker actuator device comprising an operating member whose rotation drives the displacement of the mobile circuit-breaking components, said member being connected to a first spring connected itself to a first point of the actuating member and to a second spring itself connected to a second point of the actuating member, the rotation axis of said member being situated, when the two springs are loaded, with respect to the force application axis of the first spring and the force application axis of the second spring, in such a way that the actuating of the first spring dominates that of the second spring, characterized in that the actuating member is a wheel (R), the rotation axis of which is disposed in its centre, said wheel being connected to the first spring (S'1) by a first chain (C1) passing over a first pulley (P1) and fixed to a point (A1) adjacent to the periphery of said wheel, and said wheel being also connected to the second spring (S2) connected by a second chain (C2) passing over a second pulley (P2) and fixed to the same point (A1) of said wheel, the wheel being maintained in a fixed position when the springs (S'1, S2) are loaded due to a restraining member (K1) whose removal sets the wheel free in rotation, the strand of the second chain (C2) connecting the second spring (S2) to the wheel (R) passing through the axis of the wheel (R), in this position.
  2. An actuating device according to claim 1, characterized in that the second spring (S2) has a force higher than that fo the first spring (S'1).
EP87102331A 1986-02-21 1987-02-19 Operating device for circuit-breaker Expired - Lifetime EP0238847B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8602409 1986-02-21
FR8602409A FR2595004B1 (en) 1986-02-21 1986-02-21 MECHANICAL DEVICE FOR ACTUATING A CIRCUIT BREAKER

Publications (2)

Publication Number Publication Date
EP0238847A1 EP0238847A1 (en) 1987-09-30
EP0238847B1 true EP0238847B1 (en) 1993-06-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102331A Expired - Lifetime EP0238847B1 (en) 1986-02-21 1987-02-19 Operating device for circuit-breaker

Country Status (11)

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US (1) US4743721A (en)
EP (1) EP0238847B1 (en)
JP (1) JPS62222525A (en)
CN (1) CN1008850B (en)
BR (1) BR8700827A (en)
DE (1) DE3786186T2 (en)
DK (1) DK86687A (en)
ES (1) ES2041247T3 (en)
FR (1) FR2595004B1 (en)
IE (1) IE62081B1 (en)
PT (1) PT84336B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135263C2 (en) * 1991-10-25 1994-12-08 Daimler Benz Ag Operating device for a remote actuating device
FR2778492B1 (en) * 1998-05-11 2000-06-23 Alsthom Gec SPRING CONTROL FOR CIRCUIT SWITCH
FR2812760B1 (en) * 2000-08-04 2002-09-13 Schneider Electric High Voltag DRIVE CHAIN MECHANISM FOR HIGH VOLTAGE CUT-OUT ELECTRICAL EQUIPMENT
DE10203478A1 (en) * 2002-01-23 2003-07-31 Siemens Ag Circuit breaker with a drive device for actuating a contact unit
US8362379B1 (en) 2010-06-25 2013-01-29 U.S. Department Of Energy Remote switch actuator
DE102015200135A1 (en) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Coupling member for an electrical switching device, in particular a vacuum interrupter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544811A (en) * 1948-02-27 1951-03-13 F A Straub Equipment Co Clutch lever booster
GB708191A (en) * 1951-04-23 1954-04-28 Reyrolle A & Co Ltd Improvements relating to spring-closed electric circuit-breakers
DE1210476B (en) * 1959-12-31
US3144296A (en) * 1961-04-19 1964-08-11 Hartmann & Braun Ag Recorder
FR1561459A (en) * 1968-02-14 1969-03-28
FR1588485A (en) * 1968-05-03 1970-04-17
DE2200332C3 (en) * 1972-01-05 1975-06-05 Sachsenwerk, Licht- Und Kraft-Ag, 8000 Muenchen Spring-loaded actuator for high-voltage circuit breakers
JPS6313632Y2 (en) * 1979-07-31 1988-04-18
JPS60186779A (en) * 1984-03-05 1985-09-24 古河電気工業株式会社 Rocking device for crank

Also Published As

Publication number Publication date
CN1008850B (en) 1990-07-18
DE3786186T2 (en) 1993-09-23
PT84336A (en) 1987-03-01
DK86687A (en) 1987-08-22
DK86687D0 (en) 1987-02-20
US4743721A (en) 1988-05-10
ES2041247T3 (en) 1993-11-16
IE870444L (en) 1987-08-21
FR2595004A1 (en) 1987-08-28
IE62081B1 (en) 1994-12-14
PT84336B (en) 1989-09-14
EP0238847A1 (en) 1987-09-30
FR2595004B1 (en) 1994-04-08
CN87100771A (en) 1987-11-11
JPS62222525A (en) 1987-09-30
BR8700827A (en) 1987-12-22
DE3786186D1 (en) 1993-07-22
JPH0433089B2 (en) 1992-06-02

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