EP2601662B1 - Drive for a switch disconnector with c o switching capacity - Google Patents
Drive for a switch disconnector with c o switching capacity Download PDFInfo
- Publication number
- EP2601662B1 EP2601662B1 EP11741102.5A EP11741102A EP2601662B1 EP 2601662 B1 EP2601662 B1 EP 2601662B1 EP 11741102 A EP11741102 A EP 11741102A EP 2601662 B1 EP2601662 B1 EP 2601662B1
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- EP
- European Patent Office
- Prior art keywords
- switching
- compression spring
- actuating
- drive according
- fork
- Prior art date
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- 230000006835 compression Effects 0.000 claims description 33
- 238000007906 compression Methods 0.000 claims description 33
- 230000009471 action Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
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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
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric 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
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3052—Linear spring motors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
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- 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
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
- H01H2003/405—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing using a walking nut
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
Definitions
- the invention relates to a drive for a circuit breaker with C and O -Schaltlinguistic with serving as a switching contact switching pin and with an electric motor driven spindle drive with a spindle nut.
- a circuit breaker is an electrical high voltage switch with low current switching capability for high voltage installations. Usually, it has a switching fault protection which prevents erroneous opening and closing under load. During a disconnection process under load, a circuit breaker would be destroyed due to the arc occurring.
- a disconnect switch in which a movable part and a stationary part can be brought into contact with each other or separated again by a compression spring acting on the movable part.
- the US 2006/0006143 A1 discloses a grounding switch for a medium voltage switchgear, in which compression springs are also used.
- C and O switching capability means that the so-called switch, in the present case a circuit breaker, provides a switching capacity to be specified within a C or O circuit. This switching capacity is determined by the switching speed.
- circuit breaker which, as already explained, is used as a high voltage electrical switch with limited current switching capacity for high voltage systems or high voltage switchgear.
- circuit breaker or switch disconnectors with high current switching capacity are required, which are usually combined with the circuit breaker in series.
- disconnectors are operated according to their destination, although only with open circuit breakers, but by the control capacities on the switching paths of the circuit breakers so the capacity of the connected power supplies connected to these capacitive equalizing currents on or off.
- disconnectors are designed for a minimum switching capacity, so when switching capacitive currents of the busbars, inductive currents of idle transformers and even when busbar change the arcing contacts the pin contacts of the circuit breaker or at least not too quickly wear, especially by the alternating frequency tearing off the arc transient overvoltages are generated, which favor the formation of arcs.
- the switching time of a conventional motor drive for the circuit breaker is about 1 second, the switching speed is about 0.1 m / s. Due to the duration of the arc when switching capacitive currents of the busbars, inductive currents of idle transformers and also when busbar change (bus current transfer switching) it comes to wear of the arcing contacts of the separator pins. For these reasons, the switching of idle transformers can be done so far only with a fast circuit breaker (transformer panel).
- a fast circuit breaker can avoid this disadvantage due to its very short arc times and is therefore suitable with proper design for the switching of idle transformers. He replaces a circuit breaker.
- the adjusting element is articulated to the compression spring, wherein the compression spring is formed by a spring assembly which is mounted bistable.
- the compression spring is fixedly mounted on the side opposite the articulation point of the actuating element.
- an arrangement which causes by means of the compression spring own spring force pivotal movement of the actuating element about its fixed pivot point as soon as the actuator is acted upon by the spindle nut and removed from its current position by occupying the opposite of the two stable positions.
- An end face of the adjusting disc or the adjusting cylinder is provided with at least one acted upon by the adjusting element, eccentrically arranged adjusting bolt for the purpose of rotational actuation of the adjusting disc or the adjusting cylinder.
- the actuator which is designed as a double shift fork, that is provided with two shift forks, the spindle nut engages in a first shift fork and actuated accordingly depending on the movement of the associated spindle drive, and a second shift fork at least one of the one end face of the adjusting disc or the adjusting cylinder eccentrically arranged adjusting bolt acted upon and thereby set the adjusting disk or the adjusting cylinder in rotation.
- the drive according to the invention is characterized in that the compression spring has a spring force which ensures the C or O switching capability of the drive.
- the adjusting device is formed by a setting disc or an actuating cylinder, whose or its peripheral surface is in engagement with a control shaft for actuating the switching pin, preferably by means of positive engagement.
- the construction according to the invention relates to a fast-running disconnector drive according to the spring principle.
- the contact pin In the end positions (ON and OFF), the contact pin is held securely by the residual tension of the springs.
- the switching action is initiated via the motor-driven spindle drive. While the release pin initially remains at rest, the spring is already stretched in the direction of unstable center position and the actuator applies to the shift shaft.
- the angle of rotation of the acted upon by the shift fork actuator is about 80 ° to 100 °.
- the conversion to larger angles of rotation of, for example, 286 ° or 306 ° can be realized by means of a Vorgeleges.
- Fig. 1 a schematic diagram of an embodiment of the drive 10 according to the invention is shown, which has an actuating element 12, a compression spring 14, an adjusting device 16 and a spindle drive 18 with spindle nut 20 located thereon.
- the actuator 12 in turn has a subsequent to a flange 22 double fork 24 with a first and a second shift fork 26, 28, wherein the actuator 12 is pivotable about a fixedly disposed in the flange 22 pivot point 30.
- the double shift fork 24 facing away from the end of the flange portion 22 is pivotally connected in a common joint 32 with the compression spring 14.
- the compression spring 14 is formed in the embodiment shown as a spring assembly and arranged in a cylindrical sleeve 34 which has the common pivot 32 at its end facing the actuator 12, while the opposite end of the sleeve 34 is pivotally mounted about a fixed pivot point 36.
- shift forks 26, 28 are adjacent but not rectified, that is, their fork openings do not point in the same direction but their orientation is offset by 90 ° to each other.
- the adjusting device 16 is formed by a circular cylinder 38 which is rotatably arranged about a central axis 40 which perpendicularly intersects the extension of the connecting line of the rotary joint 32 with the fixed pivot point 30 in the flange portion 22 on the adjusting device 16, that is perpendicularly emerges from the plane.
- a shift pin 44 is mounted, which serves for alternate engagement with the first shift fork 26, which depends on the loading of the actuating element 12 on the one hand by the compression spring 14 and on the other hand by the spindle nut 20th from the in Fig. 1 shown in relation to the compression spring 14 metastable center position each moved into one of two stable end positions, whereby the adjusting device 16, that is, the circular cylinder is rotated accordingly.
- Fig. 2 is that in Fig. 1 shown and explained above embodiment of a drive according to the invention for a circuit breaker in the closed position of the switching contact, not shown in detail.
- the compression spring 14 is in this switching position in one of its two stable end positions, which was initiated by downward movement of the spindle nut 20.
- Fig. 3 is that in Fig. 1 shown and explained above embodiment of a drive according to the invention for a circuit breaker in the closed position of the switching contact, not shown in detail.
- the compression spring 14 is located in this switching position in one of its two stable end positions, which was initiated by upward movement of the spindle nut 20.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
Die Erfindung betrifft einen Antrieb für einen Trennschalter mit C und O-Schaltvermögen mit einem als Schaltkontakt dienenden Schaltstift und mit einem elektromotorisch betriebenen Spindeltrieb mit einer Spindelmutter.The invention relates to a drive for a circuit breaker with C and O -Schaltvermögen with serving as a switching contact switching pin and with an electric motor driven spindle drive with a spindle nut.
Ein Trennschalter ist ein elektrischer Hochspannungsschalter mit geringem Stromschaltvermögen für Hochspannungsanlagen. Üblicherweise weist er einen Schaltfehlerschutz auf, der ein irrtümliches Öffnen und Schließen unter Last verhindert. Bei einem Trennvorgang unter Last würde ein Trennschalter aufgrund des dabei auftretenden Lichtbogens zerstört werden.A circuit breaker is an electrical high voltage switch with low current switching capability for high voltage installations. Usually, it has a switching fault protection which prevents erroneous opening and closing under load. During a disconnection process under load, a circuit breaker would be destroyed due to the arc occurring.
Aus der
Die
In der
C und O-Schaltvermögen bedeutet, dass der so bezeichnete Schalter, im vorliegenden Fall ein Trennschalter, innerhalb einer C- oder O-Schaltung ein zu spezifizierendes Schaltvermögen bereitstellt. Dieses Schaltvermögen wird von der Schaltgeschwindigkeit bestimmt. C and O switching capability means that the so-called switch, in the present case a circuit breaker, provides a switching capacity to be specified within a C or O circuit. This switching capacity is determined by the switching speed.
Nun zurück zum eigentlichen Trennschalter, der, wie bereits erläutert, ein als elektrischer Hochspannungsschalter mit eingeschränktem Stromschaltvermögen für Hochspannungsanlagen oder Hochspannungsschaltanlagen zum Einsatz kommt. Für die Trennung der elektrischen Verbindung unter Last sind Leistungsschalter oder Lasttrennschalter mit hohem Stromschaltvermögen erforderlich, welche im Regelfall mit dem Trennschalter in Reihenschaltung kombiniert werden.Now back to the actual circuit breaker, which, as already explained, is used as a high voltage electrical switch with limited current switching capacity for high voltage systems or high voltage switchgear. For the separation of the electrical connection under load circuit breaker or switch disconnectors with high current switching capacity are required, which are usually combined with the circuit breaker in series.
Demgemäß werden Trennschalter entsprechend ihrer Bestimmung zwar ausschließlich bei geöffneten Leistungsschaltern betätigt, jedoch sind durch die Steuerkapazitäten über die Schaltstrecken der Leistungsschalter so die Kapazität der angeschlossenen Netzteile die mit diesen Kapazitäten verbundenen Ausgleichsströme ein- beziehungsweise auszuschalten.Accordingly, although disconnectors are operated according to their destination, although only with open circuit breakers, but by the control capacities on the switching paths of the circuit breakers so the capacity of the connected power supplies connected to these capacitive equalizing currents on or off.
Insoweit sind Trennschalter für ein Mindestschaltvermögen ausgelegt, damit beim Schalten von kapazitiven Strömen der Sammelschienen, induktiven Strömen von leer laufenden Transformatoren und auch beim Sammelschienenwechsel die Lichtbogenkontakte der Stiftkontakte des Trennschalters nicht oder zumindest nicht zu rasch verschleißen, zumal durch das wechselfrequente Abreißen des Lichtbogens transiente Überspannungen erzeugt werden, welche das Zustandekommen von Lichtbögen begünstigen.In that regard, disconnectors are designed for a minimum switching capacity, so when switching capacitive currents of the busbars, inductive currents of idle transformers and even when busbar change the arcing contacts the pin contacts of the circuit breaker or at least not too quickly wear, especially by the alternating frequency tearing off the arc transient overvoltages are generated, which favor the formation of arcs.
Die Schaltzeit eines herkömmlichen Motorantriebes für den Trennschalter beträgt ca. 1 Sekunde, die Schaltgeschwindigkeit liegt bei ca. 0,1 m/s. Bedingt durch die Zeitdauer des Lichtbogens beim Schalten von kapazitiven Strömen der Sammelschienen, induktiven Strömen von leer laufenden Transformatoren und auch beim Sammelschienenwechsel (bus current transfer switching) kommt es zum Verschleiß der Lichtbogenkontakte der Trennerstifte. Aus diesen Gründen kann bislang speziell das Schalten von leer laufenden Transformatoren nur mit einem schnellen Leistungsschalter (Trafofeld) erfolgen.The switching time of a conventional motor drive for the circuit breaker is about 1 second, the switching speed is about 0.1 m / s. Due to the duration of the arc when switching capacitive currents of the busbars, inductive currents of idle transformers and also when busbar change (bus current transfer switching) it comes to wear of the arcing contacts of the separator pins. For these reasons, the switching of idle transformers can be done so far only with a fast circuit breaker (transformer panel).
Andererseits kann ein schneller Trennschalter infolge seiner sehr kurzen Lichtbogenzeiten diesen Nachteil vermeiden und ist somit bei richtiger Auslegung für das Schalten von leer laufenden Transformatoren geeignet. Er ersetzt somit einen Leistungsschalter.On the other hand, a fast circuit breaker can avoid this disadvantage due to its very short arc times and is therefore suitable with proper design for the switching of idle transformers. He replaces a circuit breaker.
Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, einen Trennschalter der eingangs genannten Art anzugeben, der hinsichtlich seines Schaltverhaltens im Sinne einer schnellen Schaltfähigkeit optimiert ist und auf einfache Weise und mit wenig Aufwand herstellbar ist.Based on this prior art, it is an object of the invention to provide a circuit breaker of the type mentioned above, which is optimized in terms of its switching behavior in terms of fast switching capability and can be produced in a simple manner and with little effort.
Diese Aufgabe wird gelöst durch die Merkmale des Anspruchs 1. Demgemäß ist vorgesehen, dass ein von einer Druckfeder belastetes und um einen ortsfesten Drehpunkt schwenkbares Stellelement vorgesehen ist, welches von der Spindelmutter beaufschlagt ist, wobei das Stellelement seinerseits mit einer Stellvorrichtung zusammenarbeitet, welche den Schaltstift betätigt.This object is achieved by the features of claim 1. Accordingly, it is provided that a loaded by a compression spring and pivotable about a fixed pivot point actuator is provided, which is acted upon by the spindle nut, wherein the actuating element in turn cooperates with an adjusting device which the switching pin actuated.
Vorteilhafterweise ist beim erfindungsgemäßen Antrieb vorgesehen, dass das Stellelement mit der Druckfeder gelenkig verbunden ist, wobei die Druckfeder von einem Federpaket gebildet ist, das bistabil gelagert ist.Advantageously, it is provided in the drive according to the invention that the adjusting element is articulated to the compression spring, wherein the compression spring is formed by a spring assembly which is mounted bistable.
Die Druckfeder ist an der dem Anlenkpunkt des Stellelements gegenüberliegenden Seite ortsfest gelagert.The compression spring is fixedly mounted on the side opposite the articulation point of the actuating element.
Hierdurch ist eine Anordnung geschaffen, welche mit Hilfe der der Druckfeder eigenen Federkraft eine Schwenkbewegung des Stellelements um seinen ortsfesten Drehpunkt bewirkt, sobald das Stellelement von der Spindelmutter beaufschlagt und aus seiner aktuellen Lage entfernt wird, indem es die entgegengesetzte der beiden stabilen Positionen einnimmt.As a result, an arrangement is provided which causes by means of the compression spring own spring force pivotal movement of the actuating element about its fixed pivot point as soon as the actuator is acted upon by the spindle nut and removed from its current position by occupying the opposite of the two stable positions.
Eine Stirnfläche der Stellscheibe beziehungsweise des Stellzylinders ist mit wenigstens einem von dem Stellelement beaufschlagbaren, exzentrisch angeordneten Stellbolzen versehen zwecks Drehbetätigung der Stellscheibe beziehungsweise des Stellzylinders.An end face of the adjusting disc or the adjusting cylinder is provided with at least one acted upon by the adjusting element, eccentrically arranged adjusting bolt for the purpose of rotational actuation of the adjusting disc or the adjusting cylinder.
Hierzu beaufschlagt das Stellelement, welches als Doppelschaltgabel ausgebildet ist, also mit zwei Schaltgabeln versehen ist, wobei die Spindelmutter in eine erste Schaltgabel eingreift und diese je nach Bewegung des zugeordneten Spindeltriebs entsprechend betätigt, und eine zweite Schaltgabel wenigstens einen der auf der einen Stirnfläche der Stellscheibe beziehungsweise des Stellzylinders exzentrisch angeordneten Stellbolzen beaufschlagt und hierdurch die Stellscheibe beziehungsweise den Stellzylinder in Drehung versetzt.For this purpose acts on the actuator, which is designed as a double shift fork, that is provided with two shift forks, the spindle nut engages in a first shift fork and actuated accordingly depending on the movement of the associated spindle drive, and a second shift fork at least one of the one end face of the adjusting disc or the adjusting cylinder eccentrically arranged adjusting bolt acted upon and thereby set the adjusting disk or the adjusting cylinder in rotation.
Vorteilhafterweise ist der erfindungsgemäße Antrieb dadurch gekennzeichnet, dass die Druckfeder eine Federkraft aufweist, welche die C- oder O-Schaltfähigkeit des Antriebs gewährleistet.Advantageously, the drive according to the invention is characterized in that the compression spring has a spring force which ensures the C or O switching capability of the drive.
In zweckmäßiger Weiterbildung der Erfindung ist die Stellvorrichtung von einer Stellscheibe oder einem Stellzylinder gebildet, deren beziehungsweise dessen Umfangsfläche sich mit einer Stellwelle zur Betätigung des Schaltstiftes im Eingriff befindet, vorzugsweise mittels formschlüssigen Eingriffs.In an expedient development of the invention, the adjusting device is formed by a setting disc or an actuating cylinder, whose or its peripheral surface is in engagement with a control shaft for actuating the switching pin, preferably by means of positive engagement.
Die erfindungsgemäße Konstruktion betrifft einen schnell laufenden Trennschalterantrieb nach dem Sprungfederprinzip. In den Endlagen (EIN und AUS) wird der Kontaktstift durch die Restspannung der Federn sicher gehalten. Die Schalthandlung wird über das motorisch angetriebene Spindelgetriebe eingeleitet. Während der Trennerstift zunächst in Ruhe bleibt, wird die Feder bereits in Richtung instabile Mittellage gespannt und das Stellelement legt sich an die Schaltwelle an.The construction according to the invention relates to a fast-running disconnector drive according to the spring principle. In the end positions (ON and OFF), the contact pin is held securely by the residual tension of the springs. The switching action is initiated via the motor-driven spindle drive. While the release pin initially remains at rest, the spring is already stretched in the direction of unstable center position and the actuator applies to the shift shaft.
Nachdem dieser Berührungskontakt hergestellt ist, entspannt sich die Feder aus der metastabilen Mittellage in die entsprechende stabile Endlage, in welcher der Trennschalter geöffnet ist. Der Drehwinkel der von der Schaltgabel beaufschlagten Stellvorrichtung beträgt ca. 80° bis 100°. Die Umsetzung auf größere Drehwinkel von zum Beispiel 286° beziehungsweise 306° kann mittels eines Vorgeleges realisiert werden.After this contact contact is made, the spring relaxes from the metastable central position in the corresponding stable end position in which the circuit breaker is opened. The angle of rotation of the acted upon by the shift fork actuator is about 80 ° to 100 °. The conversion to larger angles of rotation of, for example, 286 ° or 306 ° can be realized by means of a Vorgeleges.
Somit bestehen beste Voraussetzungen, den erfindungsgemäßen schnellen Trennschalterantrieb, insbesondere wegen der vorhandenen Drehdurchführung der Trennschalter, an bestehende Trennschalter anzukoppeln.Thus, there are best conditions to couple the inventive quick disconnect switch drive, in particular because of the existing rotary feedthrough of the circuit breaker to existing circuit breaker.
Diese und weitere vorteilhafte Merkmale sowie Vorteile und Verbesserungen sind Gegenstand der weiteren Ansprüche.These and other advantageous features and advantages and improvements are the subject of further claims.
Anhand eines in der beigefügten Zeichnung schematisch gezeigten Ausführungsbeispiels sollen die Erfindung, besondere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sowie besondere Vorteile der Erfindung näher erläutert und beschrieben werden.Reference to an embodiment schematically shown in the accompanying drawings, the invention, particular advantageous refinements and improvements of the invention and particular advantages of the invention will be explained and described in detail.
Es zeigen:
- Fig. 1
- eine Schemaskizze des erfindungsgemäßen Antriebes in metastabiler Mittellage,
- Fig. 2
- eine Schemaskizze des erfindungsgemäßen Antriebes in stabiler erster Endlage und
- Fig. 3
- eine Schemaskizze des erfindungsgemäßen Antriebes in stabiler zweiter Endlage.
- Fig. 1
- a schematic of the drive according to the invention in metastable middle position,
- Fig. 2
- a schematic of the drive according to the invention in a stable first end position and
- Fig. 3
- a schematic of the drive according to the invention in a stable second end position.
In
Das Stellelement 12 weist seinerseits eine an ein Flanschteil 22 anschließende Doppelschaltgabel 24 mit einer ersten und einer zweiten Schaltgabel 26, 28 auf, wobei das Stellelement 12 um einen ortsfest im Flanschteil 22 angeordneten Drehpunkt 30 schwenkbar ist.The
Ferner ist das der Doppelschaltgabel 24 abgewandte Ende des Flanschteiles 22 in einem gemeinsamen Gelenk 32 mit der Druckfeder 14 gelenkig verbunden. Die Druckfeder 14 ist im gezeigten Ausführungsbeispiel als Federpaket ausgebildet und in einer zylindrischen Hülse 34 angeordnet, welche an ihrem dem Stellelement 12 zugewandten Ende das gemeinsame Drehgelenk 32 aufweist, während das entgegengesetzte Ende der Hülse 34 um einen ortsfesten Drehpunkt 36 schwenkbar gelagert ist.Further, the
Die in der Doppelschaltgabel 24 des Stellelements 12 vereinigten Schaltgabeln 26, 28 sind benachbart aber nicht gleichgerichtet, das heißt, ihre Gabelöffnungen weisen nicht in die gleiche Richtung sondern ihre Ausrichtung ist um 90° zueinander versetzt.The combined in the
Während die Gabelöffnung 27 der ersten Schaltgabel 26 in Richtung der Verlängerung der Verbindungslinie des Drehgelenks 32 mit dem ortsfesten Drehpunkt 30 im Flanschteil 22 auf die Stellvorrichtung 16 weist, ist die Gabelöffnung 29 der zweiten Schaltgabel 28 senkrecht oder in einem anderen Winkel hierzu in Richtung auf den bereits erwähnten Spindeltrieb 18 mit der Spindelmutter 20 angeordnet.While the fork opening 27 of the
Die Stellvorrichtung 16 ist von einem Kreiszylinder 38 gebildet, der um eine Mittelachse 40 drehbar abgeordnet ist, welche die Verlängerung der Verbindungslinie des Drehgelenks 32 mit dem ortsfesten Drehpunkt 30 im Flanschteil 22 auf die Stellvorrichtung 16 senkrecht schneidet, das heißt senkrecht aus der Zeichenebene heraustritt.The adjusting
An seiner parallel zur Zeichenebene verlaufenden, dem Stellelement 12 benachbarten Stirnfläche 42 ist ein Schaltbolzen 44 angebracht, der zum wechselweisen Eingriff mit der ersten Schaltgabel 26 dient, welche ihn abhängig von der Beaufschlagung des Stellelements 12 einerseits durch die Druckfeder 14 und andererseits durch die Spindelmutter 20 aus der in
Mit der Stellvorrichtung 16 im Eingriff ist eine hierzu achsparallel angeordnete Schaltwelle 46, welche in nicht näher gezeigter Weise den zugeordneten Schaltkontakt des ebenfalls nicht näher gezeigten Trennschalters betätigt.With the adjusting
In
Ferner ist gut zu erkennen, dass das zwischen dem Stellelement 12 sowie der Druckfeder 14 befindliche Drehgelenk 32 sich in dieser Stellung aus der durch die Verbindungslinie des Drehpunktes 30 im Stellelement 12 mit dem Schwenkpunkt 36 der Druckfeder 14 gebildeten Geraden seitlich, das heißt nach links, entfernt hat, wodurch die erste Schaltgabel 26 den Schaltbolzen 44 der Stellvorrichtung 16 nach rechts beaufschlagt. Hierdurch wird wiederum die Schaltwelle 46 in entgegengesetzter Drehrichtung verdreht.Furthermore, it can be clearly seen that the
In
Ferner ist gut zu erkennen, dass das zwischen dem Stellelement 12 sowie der Druckfeder 14 befindliche Drehgelenk 32 sich in dieser Stellung aus der durch die Verbindungslinie des Drehpunktes 30 im Stellelement 12 mit dem Schwenkpunkt 36 der Druckfeder 14 gebildeten Geraden seitlich, das heißt nach rechts, entfernt hat, wodurch die erste Schaltgabel 26 den Schaltbolzen 44 der Stellvorrichtung 16 nach links beaufschlagt. Hierdurch wird wiederum die Schaltwelle 46 in entgegengesetzter Drehrichtung verdreht.Furthermore, it can be clearly seen that the pivot located between the actuator 12 and the
- 1010
- Antriebdrive
- 1212
- Stellelementactuator
- 1414
- Druckfedercompression spring
- 1616
- Stellvorrichtunglocking device
- 1818
- Spindeltriebspindle drive
- 2020
- Spindelmutterspindle nut
- 2222
- Flanschteilflange
- 2424
- DoppelschaltgabelDouble shift fork
- 2626
- erste Schaltgabelfirst shift fork
- 2727
- erste Gabelöffnungfirst fork opening
- 2828
- zweite Schaltgabelsecond shift fork
- 2929
- zweite Gabelöffnungsecond fork opening
- 3030
- Drehpunktpivot point
- 3232
- Drehgelenkswivel
- 3434
- Hülseshell
- 3636
- Schwenkpunktpivot point
- 3838
- Kreiszylindercircular cylinder
- 4040
- Mittelachsecentral axis
- 4242
- Stirnflächeface
- 4444
- Schaltbolzenswitching pin
- 4646
- Schaltwelleshift shaft
Claims (11)
- Drive for a switch disconnector comprising a switching pin acting as switching contact, comprising a spindle drive (18) operated by an electric motor and having a spindle nut (20), and comprising a compression spring (14),
characterized by• an actuating element (12), which is loaded by the compression spring (14) and is pivotable about a stationary fulcrum (30), and which is in the form of a twin switching fork having a first switching fork and a second switching fork (26, 28),• which actuating element is connected in articulated fashion to the compression spring (14) in a common swivel joint (32),• and into which actuating element firstly the spindle nut (20) engages,• and secondly, which actuating element interacts with an actuating apparatus (16) formed by an actuating disc or an actuating cylinder,• wherein an end face of the actuating disc or of the actuating cylinder is provided with at least one eccentrically arranged actuating bolt (44), which can be acted upon by the actuating element (12), for the purpose of rotary actuation of the actuating disc or the actuating cylinder,• and wherein the compression spring (14) is formed by a set of springs which is mounted bistably and is mounted fixed in position on the side opposite the articulation point of the actuating element (12). - Drive according to Claim 1, characterized in that the actuating bolt (44) is used for mutual engagement with the first switching fork (26), which moves it out of a metastable central position of the compression spring (14) in each case into one of two stable end positions depending on the action of the actuating element (12) firstly by the compression spring (14) and secondly by the spindle nut (20), as a result of which the actuating apparatus is rotated correspondingly.
- Drive according to Claim 1 or 2, characterized in that the twin switching fork (24) adjoins a flange part (22), and in that the stationary fulcrum (30) is arranged in the flange part (22).
- Drive according to one of the preceding claims, characterized in that the switching forks combined in the twin switching fork (24) of the actuating element (12) are adjacent to one another but not pointing in the same direction.
- Drive according to Claim 4, characterized in that, in a metastable central position of the compression spring (14), the fork opening (27) of the first switching fork (26) points in the direction of an extension of the connecting line between the swivel joint (32) and the stationary fulcrum (30), and in that the fork opening (29) of the second switching fork (28) is arranged perpendicular thereto or at another angle thereto in the direction of the spindle drive (18).
- Drive according to one of the preceding claims, characterized in that the actuating apparatus (16) is arranged rotatably about a central axis (40) which, in a metastable central position of the compression spring (14), perpendicularly intersects an extension of the connecting line between the swivel joint (32) and the stationary fulcrum (30).
- Drive according to one of the preceding claims, characterized in that a switching shaft (46) arranged axially parallel with respect to the actuating apparatus (16) is in engagement therewith, said switching shaft actuating the switching contact of the switch disconnector.
- Drive according to one of the preceding claims, characterized in that the compression spring (14) has a spring force which ensures a C and 0 switching capability of the drive.
- Drive according to one of the preceding claims, characterized in that in the closing position of the switch disconnector, the compression spring (14) is in one of its two stable end positions.
- Drive according to one of the preceding claims, characterized in that one of the two stable end positions of the compression spring (14) is introduced by a downwards movement of the spindle nut (20), and the other of the two stable end positions of the compression spring (14) is introduced by an upwards movement of the spindle nut (20).
- Drive according to one of the preceding claims, characterized in that, in the closing position of the switch disconnector, the swivel joint (32) has been removed laterally from the straight line formed by a connecting line between the stationary fulcrum (30) and a pivoting point (36) of the compression spring (14), as a result of which the first switching fork (26) acts on the switching bolt (44) towards the right or towards the left.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010033042A DE102010033042A1 (en) | 2010-08-02 | 2010-08-02 | Drive for a circuit breaker with C O switching capacity |
PCT/EP2011/003356 WO2012016618A1 (en) | 2010-08-02 | 2011-07-06 | Drive for a switch disconnector with c o switching capacity |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2601662A1 EP2601662A1 (en) | 2013-06-12 |
EP2601662B1 true EP2601662B1 (en) | 2015-10-07 |
Family
ID=44629853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11741102.5A Active EP2601662B1 (en) | 2010-08-02 | 2011-07-06 | Drive for a switch disconnector with c o switching capacity |
Country Status (7)
Country | Link |
---|---|
US (1) | US8890640B2 (en) |
EP (1) | EP2601662B1 (en) |
KR (1) | KR20130094779A (en) |
CN (1) | CN103026439B (en) |
DE (1) | DE102010033042A1 (en) |
HU (1) | HUE028249T2 (en) |
WO (1) | WO2012016618A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104715942B (en) * | 2013-12-13 | 2016-08-24 | 上海电科电器科技有限公司 | Motor cam operated means and transmission mechanism thereof |
US10732223B2 (en) * | 2017-09-14 | 2020-08-04 | Schweitzer Engineering Laboratories, Inc. | Circuit breaker health monitoring |
CN108711531B (en) * | 2018-07-09 | 2023-12-29 | 江苏双汇电力发展股份有限公司 | High-voltage switch |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD68025A (en) * | ||||
US2776346A (en) * | 1953-12-31 | 1957-01-01 | Gen Electric | Drawout mechanism for metal enclosed electric switchgear |
US2849569A (en) * | 1954-07-22 | 1958-08-26 | Ite Circuit Breaker Ltd | Selective trip circuit breaker with instantaneous trip during closing |
US2921998A (en) * | 1958-05-02 | 1960-01-19 | Ite Circuit Breaker Ltd | Four position drawout circuit breaker |
DE1098071B (en) | 1959-09-24 | 1961-01-26 | Driescher Spezialfab Fritz | Switch-disconnector with snap action of the switch shaft |
US3019309A (en) * | 1960-02-01 | 1962-01-30 | Allis Chalmers Mfg Co | Integrated racking and contact controlling mechanism for circuit breakers |
FR1586097A (en) * | 1964-07-08 | 1970-02-06 | ||
CH424932A (en) * | 1964-09-03 | 1966-11-30 | Siemens Ag | Motor drive for electric switches |
DE1665806C3 (en) * | 1966-11-14 | 1976-01-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Motor-driven drive unit for an electric shading device |
US3772489A (en) * | 1972-07-17 | 1973-11-13 | Ite Imperial Corp | Racking safety disconnect switch for vacuum circuit breakers |
US3793493A (en) * | 1972-08-21 | 1974-02-19 | Ite Imperial Corp | Draw out circuit breaker and compartment interlock and secondary contact actuation |
US3778568A (en) * | 1972-08-21 | 1973-12-11 | Ite Imperial Corp | Draw out switchgear-compartment shutter |
US3823281A (en) * | 1972-08-21 | 1974-07-09 | Ite Imperial Corp | Draw-out type modular high voltage switchgear and compartment-motorized racking mechanism therefor |
US3784764A (en) * | 1972-08-21 | 1974-01-08 | Ite Imperial Corp | Racking mechanism for draw-out type miniature high voltage circuit breaker |
CH654442A5 (en) * | 1981-05-22 | 1986-02-14 | Sprecher & Schuh Ag | DEVICE FOR INTERLOCKING THE DRIVES OF TWO ELECTRICAL DISCONNECTORS. |
JPS61161844U (en) * | 1985-03-25 | 1986-10-07 | ||
JPS61224227A (en) * | 1985-03-28 | 1986-10-04 | 三菱電機株式会社 | Air circuit breaker |
JPH0793077B2 (en) * | 1987-07-10 | 1995-10-09 | 株式会社日立製作所 | Switch operating device |
DE4227953C1 (en) * | 1992-08-22 | 1994-03-17 | Felten & Guilleaume Energie | Motor drive device for switching devices, in particular for medium-voltage switchgear |
DE19534392A1 (en) * | 1995-09-16 | 1997-03-20 | Abb Patent Gmbh | Drive for the movable contact piece of an isolating earthing switch |
US6180902B1 (en) * | 1997-12-19 | 2001-01-30 | S&C Electric Company | Fault interrupter and operating mechanism therefor |
DE602004025223D1 (en) | 2004-07-12 | 2010-03-11 | Abb Technology Ag | earthing switch |
FR2916300B1 (en) * | 2007-05-15 | 2009-07-10 | Schneider Electric Ind Sas | DEVICE FOR CONTROLLING THE CONTACT OR NON-CONTACT OF TWO PARTS AND AN ELECTRIC APPARATUS COMPRISING SUCH A DEVICE |
CN201514866U (en) * | 2009-09-24 | 2010-06-23 | 厦门华电开关有限公司 | Electrically-operated mechanism for electric switch device |
-
2010
- 2010-08-02 DE DE102010033042A patent/DE102010033042A1/en not_active Withdrawn
-
2011
- 2011-07-06 WO PCT/EP2011/003356 patent/WO2012016618A1/en active Application Filing
- 2011-07-06 EP EP11741102.5A patent/EP2601662B1/en active Active
- 2011-07-06 CN CN201180038230.1A patent/CN103026439B/en active Active
- 2011-07-06 KR KR1020137002294A patent/KR20130094779A/en not_active Application Discontinuation
- 2011-07-06 HU HUE11741102A patent/HUE028249T2/en unknown
-
2013
- 2013-01-31 US US13/755,184 patent/US8890640B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN103026439A (en) | 2013-04-03 |
WO2012016618A1 (en) | 2012-02-09 |
HUE028249T2 (en) | 2016-12-28 |
US20130135066A1 (en) | 2013-05-30 |
EP2601662A1 (en) | 2013-06-12 |
KR20130094779A (en) | 2013-08-26 |
DE102010033042A1 (en) | 2012-02-02 |
CN103026439B (en) | 2016-01-20 |
US8890640B2 (en) | 2014-11-18 |
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