EP2462602B1 - Spring-operated mechanism having delay circuit - Google Patents

Spring-operated mechanism having delay circuit Download PDF

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Publication number
EP2462602B1
EP2462602B1 EP10745133.8A EP10745133A EP2462602B1 EP 2462602 B1 EP2462602 B1 EP 2462602B1 EP 10745133 A EP10745133 A EP 10745133A EP 2462602 B1 EP2462602 B1 EP 2462602B1
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EP
European Patent Office
Prior art keywords
unit
flywheel
switching
timer unit
control unit
Prior art date
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EP10745133.8A
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German (de)
French (fr)
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EP2462602A1 (en
Inventor
Jörg KNOSPE
Henrik Lohrberg
Joachim Eggers
Franz-Josef Körber
Thomas Brenneis
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ABB Technology AG
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ABB Technology AG
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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
    • H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
    • 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
    • H01H3/3015—Charging means using cam devices
    • 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
    • H01H3/3031—Means for locking the spring in a charged state
    • 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
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Definitions

  • the invention relates to a device for the time-delayed actuation of at least one switching contact of a circuit breaker, in particular in a high-voltage switchgear, which hydromechanical spring drive has a hydraulically actuated CO (close-open) - delay circuit, which delays the triggering of the switching operation of the circuit breaker.
  • CO close-open
  • the advantage associated with the present invention is essentially to be seen in the constant time delay or acceleration in an extended temperature range.
  • the electric drive generating the angular momentum is preferably positively connected, for example via a 4 kt shaft, in engagement with the electromechanical actuator.
  • the scope of the Driving disc an actuating cam formed, which actuates a locking unit at a predetermined angle of rotation of the drive plate.
  • the drive plate is provided on its flat side with a pin-like pin, which serves for engagement in a recess of the time unit.
  • the already mentioned locking unit which can be actuated by the control unit or by the actuating cam arranged thereon, can be formed according to an advantageous embodiment of the invention by a pivotable pawl, which cooperates with both the control unit and with a provided on the time unit locking device.
  • the pawl serving as a locking unit is formed as a rectangular cuboid, along which one edge of the pivot axis is arranged, about which the pawl is pivotable, and its opposite is provided with a latching edge which acts on the one hand by the actuating cam of the control unit, that is opposite to the latching direction is raised, and on the other hand cooperates with the provided on the time unit locking device.
  • the time unit to a flywheel which is mounted coaxially with the drive plate and is provided with a local slot-like recess.
  • This slot-like recess accommodates the pin-like pin provided for engagement herein on the drive plate, the transmission of the rotational movement of the drive plate caused thereby ensuring the return of the flywheel.
  • the unit of time is acted upon by an energy unit, which is preferably designed as a spring device, which is in operative connection with the flywheel belonging to the time unit and these acted upon in a rotational direction.
  • the time unit belonging flywheel is provided at its periphery with a cam-like Anformung, which is provided for actuating the signal unit.
  • the signal unit has at least one switching element which is designed as a normally closed contact or as a make contact, which are coupled to their actuation with a switching rod which is acted upon by the time unit.
  • the signal unit is advantageously equipped with an interface which serves to control the circuit breaker.
  • each at least one switching element formed as NC or NO contact is formed by a spring contact, which occupies a switching position against the spring action when acted upon by the cam-like molding of the flywheel of the time unit.
  • the actuation of the switch contacts is here indirectly, namely provided by means of a switching rod, which depending on the nature of the relevant switching contact, namely depending on whether it is a normally closed contact or a make contact, the contacts presses or lifts or actuates or releases
  • each switching contact in the switching element may be formed as a normally closed contact or as a make contact
  • all switching contacts are designed as each loaded by a spring contacts, which springs act on the switching contact in the intended intended switching position, that is the normally closed contact in the open position and the Normally open contact in closed position.
  • the switching contacts are then each actuated or released.
  • the switching element of the signal unit has a plurality of contacts.
  • the switching element of the signal unit has a plurality of contacts.
  • only one switching rod for actuating the switching contacts is provided, wherein the control is then carried out via correspondingly formed on the shift rod switching arms.
  • FIGURE shows a schematic representation of the main components of the electro-mechanical actuator 10 according to the invention, which is actuated via a drive shaft not shown here in detail of an electric drive, also not shown, if necessary.
  • the contours or shapes of the main components shown schematically here may differ in the specific embodiment.
  • the already mentioned main components of the electro-mechanical actuator 10 are accordingly a control unit 12, a time unit 14, a power unit 16, a signal unit 18 and a locking unit 20.
  • the control unit 12 and the time unit 14 are arranged side by side on a common axis 13, wherein they are in principle independently rotatable.
  • the reference numerals 15.1 and 15.2 are the symbolically represented bearing points of the common axis.
  • the control unit 12 has a drive plate 22 which is provided on the side facing away from the viewer with a not shown here 4kt receptacle for a likewise not shown form compatible drive shaft of the electric drive, also not shown.
  • control unit 12 By means of this drive or via its drive shaft connected to the control unit 12, the control unit 12 or the drive plate 22 experiences an angular momentum which leads to its angular movement.
  • the drive plate 22 is also provided locally at its periphery with a Anformung that serves as an actuating cam 24 to act on the engaging plate 22 in engagement with Verrieglungsaku 20.
  • a pin-like pin 26 is disposed on the flat side facing the viewer of the drive plate 22 of the control unit 12, which in turn serves to act on the time unit 14 arranged coaxially in the finished assembled state next to the control unit 12.
  • the time unit 14 has a coaxial, that is on the common axis 13, rotatably arranged flywheel 28, which is provided on its axial end face with a slot-like recess 30.
  • this backdrop-like recess 30 engages the previously mentioned pin-like pin 26 and transmits at a suitable angular position of the flywheel 28 recorded by the drive plate 22 angular momentum, which acts on the flywheel 28 accordingly.
  • a pivot point 32 is arranged on the flywheel 28, to which the energy unit 16 formed by a spring device 33 is articulated, which acts on the flywheel 28 in the illustration shown in the clockwise direction.
  • the flywheel 28 is provided on its outer contour with a local Anformung, which serves as a switching cam 34 for actuating the signal unit 18, and with a latching device 36.
  • the latching device 36 is formed by a number of arranged on the circumference of the flywheel 28 or molded in its periphery notches 38, in which engages the locking unit 20 and thereby blocks a rotational movement of the flywheel 28.
  • the locking unit 20 is formed by a swivel bracket 40, which is pivotably mounted about a pivot axis 42 arranged along the outer axis facing away from the common axis of rotation 13. At the pivot axis 42 opposite outer edge of the swivel bracket 40 is provided with a locking edge 44, the contour of which is designed such that it coincides with the notches 38 in the flywheel 30.
  • the locking unit 20 or the swivel bracket 40 is also in operative contact with the integrally formed on the drive plate 22 of the control unit actuating cam 24, which leaves the swivel bracket 40 in the position shown in the single figure depending on the action of the electric drive not shown here by appropriate rotation its pivoting causes upward.
  • the switching rod 46 which is used to actuate a switching element 48 and the switching element 48 associated movable contact pieces 50, 52, is acted upon by the switching cam 34 axially, whereby the respective switching operation of the movable contact pieces 50, 52 and this is the relevant contact point 54, 56th close or open.
  • the contact points 54, 56 are, if necessary, designed as normally open contacts 54 or as normally closed contacts 56, wherein in both cases the contacts are provided with springs which act upon the respective contact in the closed or in the open position.
  • spring contacts are used in normally open contacts 54, wherein in the actuated state, that is, when acted upon by the shift rod 46, the circuit is closed.
  • the circuit is opened because the spring of the spring contact lifts the movable contact piece 54 from the contact point, because their lifting movement is no longer limited by the switching cam 34. In the switching state achieved in this way, the spring contact is not actuated.
  • the normally closed contact also uses spring contacts. In this case, when actuated by the switching cam 46 acted upon by the switching cam 46, the springs of the movable contact pieces 56 are biased and the circuit is open.
  • the electro-mechanical actuator 10 has the task of generating a mechanical time delay or acceleration.
  • the electro-mechanical actuator 10 is controlled by a mechanical tap, which forms an interface to the electric drive on the control unit 12. With the control unit 12, a drive plate 22 is provided.
  • a pawl (locking unit 20) is moved, whose task is to lock a flywheel 28 (time unit 14) on the latching 38 or unlock.
  • the driving pin 26 of the drive plate 22 has the function to move the adjacent flywheel 28 via an inner contour and thereby tension a spring element 32 of the power unit 16.
  • the flywheel 28 is driven by this spring element 32.
  • switching elements 48 On the outer contour of the flywheel 28 switching elements 48 (signal unit 18) are guided. These switching elements 48 are kept open or closed depending on the position of the flywheel 28 and thus transmit a signal to an interface to a circuit breaker. By unlocking the flywheel 28, the required time delay or acceleration is generated and triggered a signal via the switching elements 48.

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

Description

Die Erfindung betrifft eine Vorrichtung zur zeitverzögerten Betätigung wenigstens eines Schaltkontaktes eines Leistungsschalters, insbesondere in einer Hochspannungsschaltanlage, welcher hydromechanische Federspeicherantrieb eine hydraulisch betätigte CO (Close-Open)- Verzögerungsschaltung aufweist, welche die Auslösung des Schaltvorganges des Leistungsschalters verzögert.The invention relates to a device for the time-delayed actuation of at least one switching contact of a circuit breaker, in particular in a high-voltage switchgear, which hydromechanical spring drive has a hydraulically actuated CO (close-open) - delay circuit, which delays the triggering of the switching operation of the circuit breaker.

Es ist allgemein bekannt, dass zur Ansteuerung von Schaltkontakten, vorzugsweise in Hochspannungsschaltanlagen hydromechanische Federspeicherantriebe zum Einsatz gelangen, die überdies mit einer im allgemeinen hydraulisch betätigten CO (Close-Open)- Verzögerungsschaltung versehen sind. Diese Verzögerungsschaltung soll durch Zeitverzögerung eine kontrollierte Öffnung des jeweiligen Schaltkontaktes sowie gegebenenfalls von Hilfskontakten sicherstellen.It is well known that for controlling switching contacts, preferably in high-voltage switchgear hydromechanical spring-loaded drives are used, which are also provided with a generally hydraulically operated CO (close-open) - delay circuit. This delay circuit is to ensure by time delay a controlled opening of the respective switching contact and possibly auxiliary contacts.

Ferner ist allgemein bekannt, dass derartige hydraulisch betätigte CO(Close-Open) - Verzögerungsschaltungen gegen Temperatureinflüsse sehr anfällig sind, das heißt, sie gewährleisten nur innerhalb eines schmalen Temperaturintervalls die Einhaltung der jeweils vorgesehenen, erforderlichen konstanten Zeitverzögerung. Die heutige Generation von CO- Time Verzögerungsschaltungen, die von einem hydromechanischen Federspeicherantrieb hydraulisch angesteuert werden, zeigen nur in einem engen Temperaturbereich eine konstante Zeitverzögerung.Furthermore, it is generally known that such hydraulically operated CO (close-open) - delay circuits are very susceptible to temperature influences, that is, they ensure compliance with the respectively provided, required constant time delay only within a narrow temperature interval. Today's generation of CO-Time delay circuits, which are hydraulically controlled by a hydromechanical spring-loaded drive, show a constant time delay only in a narrow temperature range.

Ein Beispiel von zeitverzögerter Betätigung von Schaltkontakten ist aus der GB-A-2067838 bekannt.An example of delayed actuation of switch contacts is from GB-A-2067838 known.

Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, für einen hydromechanischen Federspeicherantrieb zur Betätigung wenigstens eines Schaltkontaktes eines Leistungsschalters der eingangs genannten Art eine Verzögerungseinrichtung zu schaffen, welche bei möglichst einfacher Gestaltung die Anforderungen an die Konstanz der Zeitverzögerung erfüllt.Based on this prior art, it is an object of the invention for a hydromechanical spring-loaded drive for actuating at least one switching contact of a circuit breaker of the type mentioned Delay device to create, which meets the requirements for the constancy of the time delay with the simplest possible design.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.This object is achieved by the characterizing features of claim 1.

Der mit der vorliegenden Erfindung verbundene Vorteil ist im Wesentlichen in der konstanten Zeitverzögerung beziehungsweise Beschleunigung in einem erweiterten Temperaturbereich zu sehen.The advantage associated with the present invention is essentially to be seen in the constant time delay or acceleration in an extended temperature range.

Der den Drehimpuls erzeugende elektrische Antrieb ist hierbei vorzugsweise formschlüssig, zum Beispiel über eine 4-kt-Welle, im Eingriff mit dem elektromechanischen Stellglied.In this case, the electric drive generating the angular momentum is preferably positively connected, for example via a 4 kt shaft, in engagement with the electromechanical actuator.

Insbesondere ist am Umfang der Mitnehmerscheibe ein Betätigungsnocken angeformt, der bei einem vorgegebenen Drehwinkel der Mitnehmerscheibe eine Verriegelungseinheit betätigt.In particular, the scope of the Driving disc an actuating cam formed, which actuates a locking unit at a predetermined angle of rotation of the drive plate.

Auch ist die Mitnehmerscheibe an ihrer Flachseite mit einem stiftartigen Zapfen versehen, der zum Eingriff in eine Ausnehmung der Zeiteinheit dient.Also, the drive plate is provided on its flat side with a pin-like pin, which serves for engagement in a recess of the time unit.

Die bereits erwähnte Verriegelungseinheit, welche von der Steuereinheit beziehungsweise von dem daran angeordneten Betätigungsnocken betätigbar ist, kann entsprechend einer vorteilhaften Ausgestaltung der Erfindung von einer schwenkbaren Sperrklinke gebildet sein, welche sowohl mit der Steuereinheit als auch mit einer an der Zeiteinheit vorgesehenen Rasteinrichtung zusammenarbeitet.The already mentioned locking unit, which can be actuated by the control unit or by the actuating cam arranged thereon, can be formed according to an advantageous embodiment of the invention by a pivotable pawl, which cooperates with both the control unit and with a provided on the time unit locking device.

Vorzugsweise ist die als Verriegelungseinheit dienende Sperrklinke als Rechteckquader ausgebildet, entlang dessen einer Kante die Schwenkachse angeordnet ist, um welche die Sperrklinke verschwenkbar ist, und dessen gegenüberliegende mit einer Rastkante versehen ist, welche einerseits von dem Betätigungsnocken der Steuereinheit beaufschlagt, das heißt entgegen der Rastrichtung angehoben, wird und andererseits mit der an der Zeiteinheit vorgesehenen Rasteinrichtung zusammenarbeitet.Preferably, the pawl serving as a locking unit is formed as a rectangular cuboid, along which one edge of the pivot axis is arranged, about which the pawl is pivotable, and its opposite is provided with a latching edge which acts on the one hand by the actuating cam of the control unit, that is opposite to the latching direction is raised, and on the other hand cooperates with the provided on the time unit locking device.

Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung weist die Zeiteinheit eine Schwungscheibe auf, welche achsgleich mit der Mitnehmerscheibe gelagert ist und mit einer örtlichen kulissenartigen Ausnehmung versehen ist. Diese kulissenartige Ausnehmung nimmt den zum Eingriff hierin an der Mitnehmerscheibe vorgesehenen stiftartigen Zapfen auf, wobei die hierdurch bewirkte Übertragung der Drehbewegung der Mitnehmerscheibe für die Rückstellung der Schwungscheibe sorgt.According to a further preferred embodiment of the invention, the time unit to a flywheel, which is mounted coaxially with the drive plate and is provided with a local slot-like recess. This slot-like recess accommodates the pin-like pin provided for engagement herein on the drive plate, the transmission of the rotational movement of the drive plate caused thereby ensuring the return of the flywheel.

Entsprechend einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen elektro-mechanischen Stellgliedes ist vorgesehen, dass die Zeiteinheit von einer Energieeinheit beaufschlagt ist, welche vorzugsweise als Federeinrichtung ausgebildet ist, welche mit der zur Zeiteinheit gehörigen Schwungscheibe in Wirkverbindung steht und diese in einer Drehrichtung beaufschlagt.According to a further preferred embodiment of the electro-mechanical actuator according to the invention it is provided that the unit of time is acted upon by an energy unit, which is preferably designed as a spring device, which is in operative connection with the flywheel belonging to the time unit and these acted upon in a rotational direction.

Darüber hinaus ist entsprechend einer weiteren Ausgestaltung der Erfindung die zur Zeiteinheit gehörige Schwungscheibe an ihrem Umfang mit einer nockenartigen Anformung versehen, welche zur Betätigung der Signaleinheit vorgesehen ist.In addition, according to a further embodiment of the invention, the time unit belonging flywheel is provided at its periphery with a cam-like Anformung, which is provided for actuating the signal unit.

In weiterer vorteilhafter Ausgestaltung der Erfindung besitzt die Signaleinheit wenigstens ein Schaltglied, das als Öffnerkontakt oder als Schließerkontakt ausgebildet ist, welche zu ihrer Betätigung mit einer Schaltstange gekoppelt sind, die durch die Zeiteinheit beaufschlagt ist. Hierbei ist die Signaleinheit vorteilhafterweise mit einer Schnittstelle ausgestattet, welche zur Ansteuerung des Leistungsschalters dient.In a further advantageous embodiment of the invention, the signal unit has at least one switching element which is designed as a normally closed contact or as a make contact, which are coupled to their actuation with a switching rod which is acted upon by the time unit. Here, the signal unit is advantageously equipped with an interface which serves to control the circuit breaker.

Entsprechend einer weiteren bevorzugten Weiterbildung des erfindungsgemäßen elektro-mechanischen Stellgliedes ist vorgesehen, dass jedes als Öffnerkontakt oder als Schließerkontakt ausgebildete wenigstens eine Schaltglied von einem Federkontakt gebildet ist, der bei Beaufschlagung durch die nockenartige Anformung der Schwungscheibe der Zeiteinheit eine Schaltstellung entgegen der Federwirkung einnimmt. Die Betätigung der Schaltkontakte ist hierbei mittelbar, nämlich mittels einer Schaltstange vorgesehen, welche je nach Art des betreffenden Schaltkontaktes, nämlich abhängig davon, ob es ein Öffnerkontakt oder ein Schließerkontakt ist, die Kontakte andrückt oder abhebt beziehungsweise betätigt oder freigibtAccording to a further preferred embodiment of the electro-mechanical actuator according to the invention, it is provided that each at least one switching element formed as NC or NO contact is formed by a spring contact, which occupies a switching position against the spring action when acted upon by the cam-like molding of the flywheel of the time unit. The actuation of the switch contacts is here indirectly, namely provided by means of a switching rod, which depending on the nature of the relevant switching contact, namely depending on whether it is a normally closed contact or a make contact, the contacts presses or lifts or actuates or releases

Mit anderen Worten, jeder Schaltkontakt in dem Schaltglied kann als Öffnerkontakt oder als Schließerkontakt ausgebildet sein, wobei sämtliche Schaltkontakte als jeweils von einer Feder belastete Kontakte ausgeführt sind, welche Federn den Schaltkontakt in die bestimmungsgemäß vorgesehene Schaltposition beaufschlagen, das heißt den Öffnerkontakt in Offenstellung und den Schließerkontakt in Schließstellung. Mittels der erwähnten Schaltstange werden die Schaltkontakte dann jeweils betätigt oder freigegeben.In other words, each switching contact in the switching element may be formed as a normally closed contact or as a make contact, all switching contacts are designed as each loaded by a spring contacts, which springs act on the switching contact in the intended intended switching position, that is the normally closed contact in the open position and the Normally open contact in closed position. By means of the mentioned switching rod, the switching contacts are then each actuated or released.

In weiterer Ausgestaltung der Erfindung kann auch vorgesehen sein, dass das Schaltglied der Signaleinheit mehrere Kontakte aufweist. In diesem Fall ist vorzugsweise ebenfalls nur eine Schaltstange zur Betätigung der Schaltkontakte vorgesehen, wobei deren Ansteuerung dann über entsprechend an die Schaltstange angeformte Schaltarme erfolgt.In a further embodiment of the invention can also be provided that the switching element of the signal unit has a plurality of contacts. In this case, preferably also only one switching rod for actuating the switching contacts is provided, wherein the control is then carried out via correspondingly formed on the shift rod switching arms.

Diese und weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind Gegenstand der Unteransprüche.These and other advantageous embodiments and improvements of the invention are the subject of the dependent claims.

Anhand eines in der beigefügten Zeichnung dargestellten Ausführungsbeispieles der Erfindung sollen die Erfindung, vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sowie besondere Vorteile der Erfindung näher erläutert und beschrieben werden.Reference to an embodiment of the invention shown in the accompanying drawings, the invention, advantageous embodiments and improvements of the invention and particular advantages of the invention will be explained and described in detail.

Es zeigt die einzige Figur:

  • Eine schematische Darstellung des funktionellen Zusammenwirkens der wesentlichen Funktionselemente des elektro-mechanischen Stellgliedes.
It shows the only figure:
  • A schematic representation of the functional interaction of the essential functional elements of the electro-mechanical actuator.

Die einzige Figur zeigt in schematischer Darstellung die Hauptkomponenten des erfindungsgemäßen elektro-mechanischen Stellgliedes 10, welches über eine hier nicht näher gezeigte Antriebswelle eines ebenfalls nicht dargestellten elektrischen Antriebs im Bedarfsfall betätigt wird. Die Konturen beziehungsweise Formen der hier schematisch dargestellten Hauptkomponenten können in der konkreten Ausführung abweichen.The single FIGURE shows a schematic representation of the main components of the electro-mechanical actuator 10 according to the invention, which is actuated via a drive shaft not shown here in detail of an electric drive, also not shown, if necessary. The contours or shapes of the main components shown schematically here may differ in the specific embodiment.

Zum besseren Verständnis sind die Hauptkomponenten entgegen der tatsächlichen, sehr kompakten baulichen Ausführung auseinander gezogen, um so deren jeweiligen Funktionen zu verdeutlichen.For a better understanding, the main components are pulled apart from the actual, very compact structural design, so as to illustrate their respective functions.

Die bereits erwähnten Hauptkomponenten des elektro-mechanischen Stellgliedes 10 sind demgemäß eine Steuereinheit 12, eine Zeiteinheit 14, eine Energieeinheit 16, eine Signaleinheit 18 und eine Verriegelungseinheit 20.The already mentioned main components of the electro-mechanical actuator 10 are accordingly a control unit 12, a time unit 14, a power unit 16, a signal unit 18 and a locking unit 20.

Die Steuereinheit 12 und die Zeiteinheit 14 sind auf einer gemeinsamen Achse 13 nebeneinander angeordnet, wobei sie prinzipiell voneinander unabhängig drehbeweglich sind. Mit den Bezugsziffern 15.1 und 15.2 sind die symbolisch dargestellten Lagerpunkte der gemeinsamen Achse bezeichnet.The control unit 12 and the time unit 14 are arranged side by side on a common axis 13, wherein they are in principle independently rotatable. The reference numerals 15.1 and 15.2 are the symbolically represented bearing points of the common axis.

Die Steuereinheit 12 besitzt eine Mitnehmerscheibe 22, welche auf der dem Betrachter abgewandten Seite mit einer demgemäß hier nicht dargestellten 4kt-Aufnahme versehen ist für eine ebenfalls nicht dargestellte formkompatible Antriebswelle des ebenfalls nicht dargestellten elektrischen Antriebs.The control unit 12 has a drive plate 22 which is provided on the side facing away from the viewer with a not shown here 4kt receptacle for a likewise not shown form compatible drive shaft of the electric drive, also not shown.

Mittels dieses Antriebes beziehungsweise über dessen mit der Steuereinheit 12 verbundene Antriebswelle erfährt die Steuereinheit 12 beziehungsweise die Mitnehmerscheibe 22 einen Drehimpuls, der zu deren Winkelbewegung führt.By means of this drive or via its drive shaft connected to the control unit 12, the control unit 12 or the drive plate 22 experiences an angular momentum which leads to its angular movement.

Die Mitnehmerscheibe 22 ist darüber hinaus an ihrem Umfang örtlich mit einer Anformung versehen, die als Betätigungsnocken 24 dazu dient, die mit der Mitnehmerscheibe 22 im Eingriff befindliche Verrieglungseinheit 20 zu beaufschlagen.The drive plate 22 is also provided locally at its periphery with a Anformung that serves as an actuating cam 24 to act on the engaging plate 22 in engagement with Verrieglungseinheit 20.

Außerdem ist an der dem Betrachter zugewandten Flachseite der Mitnehmerscheibe 22 der Steuereinheit 12 ein stiftartiger Zapfen 26 angeordnet, der seinerseits dazu dient, die im fertig montierten Zustand dicht neben der Steuereinheit 12 achsgleich angeordnete Zeiteinheit 14 zu beaufschlagen.In addition, a pin-like pin 26 is disposed on the flat side facing the viewer of the drive plate 22 of the control unit 12, which in turn serves to act on the time unit 14 arranged coaxially in the finished assembled state next to the control unit 12.

Zu diesem Zweck weist die Zeiteinheit 14 eine achsgleich, das heißt auf der gemeinsamen Achse 13, drehbeweglich angeordnete Schwungscheibe 28 auf, die auf ihrer axialen Stirnseite mit einer kulissenartigen Ausnehmung 30 versehen ist. In diese kulissenartige Ausnehmung 30 greift der bereits vorher erwähnte stiftartige Zapfen 26 ein und überträgt bei geeigneter Winkellage der Schwungscheibe 28 den von der Mitnehmerscheibe 22 aufgenommenen Drehimpuls, der die Schwungscheibe 28 entsprechend beaufschlagt.For this purpose, the time unit 14 has a coaxial, that is on the common axis 13, rotatably arranged flywheel 28, which is provided on its axial end face with a slot-like recess 30. In this backdrop-like recess 30 engages the previously mentioned pin-like pin 26 and transmits at a suitable angular position of the flywheel 28 recorded by the drive plate 22 angular momentum, which acts on the flywheel 28 accordingly.

Außerdem ist an der Schwungscheibe 28 ein Anlenkpunkt 32 eingerichtet, an welchem die von einer Federeinrichtung 33 gebildete Energieeinheit 16 angelenkt ist, welche die Schwungscheibe 28 in der gezeigten Darstellung im Uhrzeigersinn beaufschlagt.In addition, a pivot point 32 is arranged on the flywheel 28, to which the energy unit 16 formed by a spring device 33 is articulated, which acts on the flywheel 28 in the illustration shown in the clockwise direction.

Ferner ist die Schwungscheibe 28 an ihrer Außenkontur mit einer örtlichen Anformung, welche als Schaltnocken 34 zur Betätigung der Signaleinheit 18 dient, sowie mit einer Rasteinrichtung 36 versehen. Die Rasteinrichtung 36 ist von einer Reihe von am Umfang der Schwungscheibe 28 angeordneten oder in deren Umfang eingeformten Rastkerben 38 gebildet, in welche die Verriegelungseinheit 20 eingreift und dadurch eine Drehbewegung der Schwungscheibe 28 blockiert.Furthermore, the flywheel 28 is provided on its outer contour with a local Anformung, which serves as a switching cam 34 for actuating the signal unit 18, and with a latching device 36. The latching device 36 is formed by a number of arranged on the circumference of the flywheel 28 or molded in its periphery notches 38, in which engages the locking unit 20 and thereby blocks a rotational movement of the flywheel 28.

Die Verriegelungseinheit 20 ist von einem Schwenkbügel 40 gebildet, welcher um eine entlang der der gemeinsamen Drehachse 13 abgewandten Außenkante angeordnete Schwenkachse 42 schwenkbar gelagert ist. An der der Schwenkachse 42 gegenüber liegenden Außenkante ist der Schwenkbügel 40 mit einer Rastkante 44 versehen, deren Kontur derart gestaltet ist, dass sie mit der der Rastkerben 38 in der Schwungscheibe 30 übereinstimmt.The locking unit 20 is formed by a swivel bracket 40, which is pivotably mounted about a pivot axis 42 arranged along the outer axis facing away from the common axis of rotation 13. At the pivot axis 42 opposite outer edge of the swivel bracket 40 is provided with a locking edge 44, the contour of which is designed such that it coincides with the notches 38 in the flywheel 30.

Die Verriegelungseinheit 20 beziehungsweise der Schwenkbügel 40 steht ferner in Wirkkontakt mit dem an der Mitnehmerscheibe 22 der Steuereinheit angeformten Betätigungsnocken 24, welcher je nach Beaufschlagung durch den hier nicht dargestellten elektrischen Antrieb den Schwenkbügel 40 in der in der einzigen Figur gezeigten Position belässt oder durch entsprechende Drehung dessen Schwenkung nach oben bewirkt.The locking unit 20 or the swivel bracket 40 is also in operative contact with the integrally formed on the drive plate 22 of the control unit actuating cam 24, which leaves the swivel bracket 40 in the position shown in the single figure depending on the action of the electric drive not shown here by appropriate rotation its pivoting causes upward.

Durch diesen Schwenkvorgang gelangt der Schwenkbügel 40 außer Eingriff mit der Rastvorrichtung 36, was zur Freigabe der Schwungscheibe 28 führt, so dass diese der Krafteinwirkung der Energieeinheit 16 folgt. Bei dieser hierdurch ausgelösten Drehbewegung erreicht der an der Schwungscheibe 28 angeordnete Schaltnocken 34 die Signaleinheit 18 und beaufschlagt eine Schaltstange 46.By this pivoting operation of the swivel bracket 40 is disengaged from the locking device 36, which leads to the release of the flywheel 28, so that it follows the force of the energy unit 16. In this rotational movement triggered thereby reaches the arranged on the flywheel 28 switching cam 34, the signal unit 18 and acts on a shift rod 46th

Die Schaltstange 46, welche zur Betätigung eines Schaltgliedes 48 beziehungsweise der diesem Schaltglied 48 zugeordneten beweglichen Kontaktstücke 50, 52 dient, wird durch den Schaltnocken 34 axial beaufschlagt, wodurch die jeweilige Schaltbetätigung der beweglichen Kontaktstücke 50, 52 erfolgt und diese die betreffende Kontaktstelle 54, 56 schließen oder öffnen.The switching rod 46, which is used to actuate a switching element 48 and the switching element 48 associated movable contact pieces 50, 52, is acted upon by the switching cam 34 axially, whereby the respective switching operation of the movable contact pieces 50, 52 and this is the relevant contact point 54, 56th close or open.

Die Kontaktstellen 54, 56 sind bedarfsweise als Schließerkontakte 54 oder als Öffnerkontakte 56 ausgebildet, wobei in beiden Fällen die Kontakte mit Federn versehen sind, welche den betreffenden Kontakt entsprechend in Schließ- oder in Offenstellung beaufschlagen.The contact points 54, 56 are, if necessary, designed as normally open contacts 54 or as normally closed contacts 56, wherein in both cases the contacts are provided with springs which act upon the respective contact in the closed or in the open position.

Dementsprechend werden bei Schließerkontakten 54 Federkontakte verwendet, bei welchen im betätigten Zustand, das heißt bei Beaufschlagung durch die Schaltstange 46, der Stromkreis geschlossen ist. Durch Drehung der Schwungscheibe 28 und dementsprechend durch die einhergehende räumliche Entfernung des Schaltnockens 34 von der Schaltstange 46 wird der Stromkreis geöffnet, da die Feder des Federkontakts das bewegliche Kontaktstück 54 von der Kontaktstelle abhebt, weil ihre Hubbewegung durch den Schaltnocken 34 nicht mehr begrenzt ist. In dem so erreichten Schaltzustand ist der Federkontakt unbetätigt.Accordingly, spring contacts are used in normally open contacts 54, wherein in the actuated state, that is, when acted upon by the shift rod 46, the circuit is closed. By rotation of the flywheel 28 and, accordingly, by the accompanying spatial removal of the switching cam 34 of the shift rod 46, the circuit is opened because the spring of the spring contact lifts the movable contact piece 54 from the contact point, because their lifting movement is no longer limited by the switching cam 34. In the switching state achieved in this way, the spring contact is not actuated.

Beim Öffnerkontakt werden ebenfalls Federkontakte verwendet. Dabei sind bei Betätigung durch die vom Schaltnocken 34 beaufschlagte Schaltstange 46 die Federn der beweglichen Kontaktstücke 56 vorgespannt und der Stromkreis ist geöffnet.The normally closed contact also uses spring contacts. In this case, when actuated by the switching cam 46 acted upon by the switching cam 46, the springs of the movable contact pieces 56 are biased and the circuit is open.

Durch Drehung der Schwungscheibe 28 und dementsprechend durch die einhergehende räumliche Entfernung des Schaltnockens 34 von der Schaltstange 46 wird der Stromkreis geschlossen, da die Feder des Federkontakts das bewegliche Kontaktstück 54 auf den Festkontakt der Kontaktstelle zu beaufschlagt, weil ihre Hubbewegung durch den Schaltnocken 34 nicht mehr begrenzt ist In dem so erreichten Schaltzustand ist der Federkontakt unbetätigt.By rotation of the flywheel 28 and, accordingly, by the accompanying spatial removal of the switching cam 34 of the shift rod 46, the circuit is closed because the spring of the spring contact the movable contact 54 to act on the fixed contact of the contact point, because their lifting movement through the control cam 34 is no longer is limited In the switching state thus achieved, the spring contact is unconfirmed.

Die Funktion des erfindungsgemäßen elektro-mechanischen Stellgliedes 10 als Verzögerungseinrichtung soll nachfolgend erläutert werden.The function of the electro-mechanical actuator 10 according to the invention as a delay device will be explained below.

Das elektro-mechanische Stellglied 10 hat die Aufgabe eine mechanische Zeitverzögerung beziehungsweise Beschleunigung zu erzeugen. Gesteuert wird das elektro-mechanische Stellglied 10 über einen mechanischen Abgriff, der an der Steuereinheit 12 eine Schnittstelle zum elektrischen Antrieb bildet. Mit der Steuereinheit 12 ist eine Mitnehmerscheibe 22 vorgesehen.The electro-mechanical actuator 10 has the task of generating a mechanical time delay or acceleration. The electro-mechanical actuator 10 is controlled by a mechanical tap, which forms an interface to the electric drive on the control unit 12. With the control unit 12, a drive plate 22 is provided.

Diese Mitnehmerscheibe 22 besitzt eine bestimmte Außenkontur und einen Mitnehmerbolzen 26. Über die Kontur der Mitnehmerscheibe 22 wird eine Klinke (Verriegelungseinheit 20) bewegt, deren Aufgabe es ist, eine Schwungscheibe 28 (Zeiteinheit 14) über deren Rastrierung 38 zu verriegeln beziehungsweise zu entriegeln.About the contour of the drive plate 22, a pawl (locking unit 20) is moved, whose task is to lock a flywheel 28 (time unit 14) on the latching 38 or unlock.

Der Mitnehmerbolzen 26 der Mitnehmerscheibe 22 hat die Funktion, die benachbarte Schwungscheibe 28 über eine Innenkontur zu bewegen und dadurch ein Federelement 32 der Energieeinheit 16 zu spannen. Die Schwungscheibe 28 wird durch dieses Federelement 32 angetrieben.The driving pin 26 of the drive plate 22 has the function to move the adjacent flywheel 28 via an inner contour and thereby tension a spring element 32 of the power unit 16. The flywheel 28 is driven by this spring element 32.

An der Außenkontur der Schwungscheibe 28 werden Schaltglieder 48 (Signaleinheit 18) geführt. Diese Schaltglieder 48 werden je nach Stellung der Schwungscheibe 28 geöffnet oder geschlossen gehalten und übertragen so ein Signal zu einer Schnittstelle zu einem Leistungsschalter. Durch die Entriegelung der Schwungscheibe 28 wird die geforderte Zeitverzögerung oder Beschleunigung erzeugt und ein Signal über die Schaltglieder 48 ausgelöst. Bezugszeichenliste 10 elektro-mechanisches Stellglied 33 Federeinrichtung 12 Steuereinheit 34 Schaltnocken 13 Achse, Drehachse 36 Rasteinrichtung 14 Zeiteinheit 38 Rastkerben 15.1 Lagerpunkt 40 Schwenkbügel 15.2 Lagerpunkt 42 Schwenkachse 16 Energieeinheit 44 Rastkante 18 Signaleinheit 46 Schaltstange 20 Verriegelungseinheit 48 Schaltglied 22 Mitnehmerscheibe 50 bewegliches Kontaktstück 24 Betätigungsnocken 52 bewegliches Kontaktstück 26 stiftartiger Zapfen 54 Schließerkontakt 28 Schwungscheibe 56 Öffnerkontakt 30 kulissenartige Ausnehmung 32 Anlenkpunkt On the outer contour of the flywheel 28 switching elements 48 (signal unit 18) are guided. These switching elements 48 are kept open or closed depending on the position of the flywheel 28 and thus transmit a signal to an interface to a circuit breaker. By unlocking the flywheel 28, the required time delay or acceleration is generated and triggered a signal via the switching elements 48. <U> REFERENCE LIST </ u> 10 electro-mechanical actuator 33 spring means 12 control unit 34 switching cams 13 Axis, axis of rotation 36 locking device 14 time unit 38 notches 15.1 bearing point 40 swivel bracket 15.2 bearing point 42 swivel axis 16 energy unit 44 catch edge 18 signal unit 46 shift rod 20 locking unit 48 switching element 22 driver disc 50 movable contact piece 24 actuating cam 52 movable contact piece 26 pin-type pin 54 NO contact 28 flywheel 56 NC 30 backdrop-like recess 32 articulation

Claims (11)

  1. Apparatus for the time-delayed operation of at least one switching contact of a circuit breaker, in particular in a high-voltage switching system, having an electromechanical actuator (10) which delays triggering of the switching process of the circuit breaker, characterized in that the electromechanical actuator (10) comprises a control unit (12), a timer unit (14) and a signalling unit (18), which units interact mechanically with one another, with the control unit (12) receiving a rotary stimulus as an input actuating variable, this rotary stimulus acting on the signalling unit (18), including the timer unit (14), the signalling unit, for its part, activating the circuit breaker via an interface and triggering the switching process of said circuit breaker, the control unit (12) and timer unit (14) which form part of the electromechanical actuator (10) are guided such that they can rotate independently of one another on a common rotation axis, and the control unit (12) has a driver disk (22) which is acted on by an electrical drive and is provided with an outer contour (24), which determines the delay, for the transmission of the correspondingly delayed operation of the timer unit.
  2. Apparatus according to Claim 1, characterized in that the timer unit (14) has a flywheel (28) which is provided with a local slotted-guide-like recess (30).
  3. Apparatus according to Claim 2, characterized in that the driver disk (22) acts on the flywheel (28), which is mounted on the same axis as the driver disk (22), by means of a pin (26) which is arranged on said driver disk.
  4. Apparatus according to either of Claims 2 and 3, characterized in that the flywheel (28) of the timer unit (14) is operated by the driver disk (22) of the control unit (12) by the pin (26) which is arranged on the driver disk (22) engaging in the slotted-guide-like recess (30) which is provided on the flywheel (28) and, as a result, acting on the flywheel (28).
  5. Apparatus according to one of the preceding claims, characterized in that a locking unit (20) is provided, it being possible for said locking unit to be operated by the control unit (12) and said locking unit interacting with a latching device (36) which is provided on the timer unit (14).
  6. Apparatus according to Claim 5, characterized in that the locking unit (20) is formed by a pivotable detent (40) which interacts both with the control unit (12) and with the latching device (36) which is provided on the timer unit (14).
  7. Apparatus according to one of the preceding claims, characterized in that the timer unit (14) is acted on by an energy unit (16).
  8. Apparatus according to Claim 7, characterized in that the energy unit (16) is in the form of a spring device (33) which is operatively connected to the flywheel (28), which forms part of the timer unit (14), and acts on said flywheel in a rotation direction.
  9. Apparatus according to one of Claims 2 to 8, characterized in that the flywheel (28) which forms part of the timer unit (14) is provided with a cam-like integral feature (24) on its circumference, said cam-like integral feature being provided to operate the signalling unit (18).
  10. Apparatus according to one of the preceding claims, characterized in that the signalling unit (18) has at least one switching element (48) which is in the form of a normally closed contact (56) or in the form of a normally open contact (54), which contacts are coupled to a switching rod (46) in order to be operated, said switching rod being acted on by the timer unit (14), and in that the signalling unit (18) is equipped with an interface which serves to activate the circuit breaker.
  11. Apparatus according to Claim 10, characterized in that each at least one switching element (48) which is in the form of a normally closed contact (56) or in the form of a normally open contact (54) is formed by a spring contact which assumes a switching position, counter to the spring action, when the cam-like integral feature of the flywheel (28) of the timer unit (14) acts on said switching element.
EP10745133.8A 2009-08-03 2010-07-26 Spring-operated mechanism having delay circuit Active EP2462602B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009035889A DE102009035889B4 (en) 2009-08-03 2009-08-03 Spring-loaded drive with delay circuit
CN2009201699643U CN201616355U (en) 2009-08-03 2009-09-14 Hydraulic mechanical spring energy-storage transmission device
PCT/EP2010/004559 WO2011015296A1 (en) 2009-08-03 2010-07-26 Spring-operated mechanism having delay circuit

Publications (2)

Publication Number Publication Date
EP2462602A1 EP2462602A1 (en) 2012-06-13
EP2462602B1 true EP2462602B1 (en) 2015-10-07

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EP10745133.8A Active EP2462602B1 (en) 2009-08-03 2010-07-26 Spring-operated mechanism having delay circuit

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US (1) US9373455B2 (en)
EP (1) EP2462602B1 (en)
JP (1) JP5559327B2 (en)
KR (1) KR20120038468A (en)
CN (2) CN201616355U (en)
DE (1) DE102009035889B4 (en)
HK (1) HK1170598A1 (en)
WO (1) WO2011015296A1 (en)

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DE102009035889B4 (en) * 2009-08-03 2011-11-10 Abb Technology Ag Spring-loaded drive with delay circuit
KR101759601B1 (en) 2015-12-28 2017-07-31 엘에스산전 주식회사 Delay time generation apparatus for air circuit breaker
CN109509648B (en) * 2017-09-15 2022-05-27 Abb瑞士股份有限公司 Speed reduction mechanism for switching device and switching device
CN110176369B (en) * 2019-06-03 2021-08-27 福建奥迈自动化科技有限公司 Power-off automatic-breaking energy-saving switch
CN113113270B (en) * 2021-04-14 2022-09-27 西安西电开关电气有限公司 Closing keeping and opening tripping system

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US2820860A (en) * 1954-01-05 1958-01-21 Eagle Signal Corp Delayed circuit closers
US4180788A (en) * 1978-07-03 1979-12-25 General Electric Company Vacuum circuit breaker with delayed trip operation
US4297554A (en) * 1980-01-24 1981-10-27 G & W Electric Specialty Company Time delay switch mechanism
US4697163A (en) * 1986-03-27 1987-09-29 Westinghouse Electric Corp. Circuit breaker with impact trip delay
DE4340533C2 (en) * 1993-11-29 1998-02-19 Abb Patent Gmbh Hydraulic device for actuating a drive piston for a movable component
DE102006041250A1 (en) 2006-09-02 2008-03-06 Abb Technology Ag drive unit
US7598468B2 (en) 2007-06-01 2009-10-06 Eaton Corporation Electrical switching apparatus, and stored energy assembly and time delay mechanism therefor
KR100876412B1 (en) * 2007-07-12 2008-12-31 엘에스산전 주식회사 Time delay output apparatus for circuit breaker
DE102008061238B4 (en) * 2008-12-09 2010-10-28 Abb Technology Ag Device for a hydraulic drive for an electrical switchgear
JP4908536B2 (en) * 2009-03-16 2012-04-04 エルエス産電株式会社 Instantaneous trip mechanism for circuit breaker for wiring
DE102009035889B4 (en) * 2009-08-03 2011-11-10 Abb Technology Ag Spring-loaded drive with delay circuit

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CN201616355U (en) 2010-10-27
DE102009035889A1 (en) 2011-02-17
JP5559327B2 (en) 2014-07-23
WO2011015296A1 (en) 2011-02-10
CN102483999B (en) 2015-09-30
JP2013501325A (en) 2013-01-10
US9373455B2 (en) 2016-06-21
DE102009035889B4 (en) 2011-11-10
KR20120038468A (en) 2012-04-23
EP2462602A1 (en) 2012-06-13
US20120193201A1 (en) 2012-08-02
CN102483999A (en) 2012-05-30
HK1170598A1 (en) 2013-03-01

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