EP0953199B1 - High-voltage power switch with an axially displaceable field electrode - Google Patents

High-voltage power switch with an axially displaceable field electrode Download PDF

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Publication number
EP0953199B1
EP0953199B1 EP98907851A EP98907851A EP0953199B1 EP 0953199 B1 EP0953199 B1 EP 0953199B1 EP 98907851 A EP98907851 A EP 98907851A EP 98907851 A EP98907851 A EP 98907851A EP 0953199 B1 EP0953199 B1 EP 0953199B1
Authority
EP
European Patent Office
Prior art keywords
coupling rod
arcing contact
field electrode
control lever
power switch
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
EP98907851A
Other languages
German (de)
French (fr)
Other versions
EP0953199A1 (en
Inventor
Heiner Marin
Volker Lehmann
Hold Dienemann
Ekkehard Anke
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE1997102822 external-priority patent/DE19702822C1/en
Priority claimed from DE19727850A external-priority patent/DE19727850C1/en
Priority claimed from DE19741660A external-priority patent/DE19741660A1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0953199A1 publication Critical patent/EP0953199A1/en
Application granted granted Critical
Publication of EP0953199B1 publication Critical patent/EP0953199B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle

Definitions

  • the invention is in the field of high voltage circuit breakers and is in the design to apply an auxiliary transmission with which the switch elements are moved be the driven contact group of the switch axially opposite.
  • circuit breakers of this type two are coaxial opposing arcing contacts coaxially from the surrounded two continuous current contact pieces, one of which arranged stationary and the other axially drivable is.
  • Such circuit breakers usually work with a gaseous extinguishing agent, which, when switched, initially is compressed and then the separation area of the two Flows through arcing contact pieces and its flow through special pressure rooms and nozzles can be influenced.
  • This serves i.a. an insulating nozzle inside the continuous current contact pieces is arranged and surrounds the arcing contact pieces and both with the drivable continuous current contact piece as well as with the driven arcing contact is firmly connected.
  • a known circuit breaker of this type (EP 0 696 040 A1) is on the first, driven arcing contact piece opposite end of the insulating nozzle with the insulating material axially displaceable field electrode attached, which surrounds the second arcing contact piece and which in the exhibition of the circuit breaker the electrical Field in the area of the other arcing contact piece and electrically highly loaded end of the insulating nozzle.
  • This known circuit breaker is additional the second arcing contact opposite to first arcing contact piece can be driven. This is at the axially displaceable field electrode and thus on the insulating nozzle attached a drive element, which by means of a Deflection gear the drive movement of the driven continuous current contact piece also on the second arcing contact pieces transmits.
  • the second arcing contact piece is therefore guided in a sliding contact.
  • Drive element designed as a rack that either over a gear on the also designed as a rack second arcing contact piece acts or a push crank drives whose rotating part is formed by a gear becomes.
  • the field electrode is displaceable by means of a gear is that from a first, through the insulating nozzle to the drivable continuous current contact coupled and in the direction the switch longitudinal axis extending coupling rod, from a parallel to it, coupled to the field electrode second coupling rod and one on the first coupling rod there is pivotally attached lever, on which pivotable part of the lever penetrating its pivoting plane Pin is attached to the second coupling rod is coupled and which engages in a guide, the one firmly connected to the second continuous current contact piece Circuit board is incorporated and designed in this way is that a first section of the backdrop guide is approximately runs parallel to the longitudinal direction of the first coupling rod and that a second, curved section of the link guide a dodge of the pin perpendicular to the longitudinal axis of the switch allowed.
  • the field electrode is separate and movable separately from the drivable arcing contact piece, so the speed and path of the field electrode different from that of the first arcing contact can be targeted, the course of the displacement movement can be specified in the form of a speed profile.
  • the peculiarity of the transmission is that of the first Coupling rod swivel-mounted lever with the on the swivel arm attached to the lever and in a fixed link guide led pen.
  • a first section of the scenery tour runs approximately parallel to the longitudinal direction of the first Coupling rod. This area is used during the movement the first coupling rod the pin along the slide guide moved without the lever swinging out. Only in that second section of the scenery guide, which is an evasion of the Pin perpendicular to the longitudinal direction in which the coupling rod is allowed to move, the lever swings out, and the Pen moves with at least one component of motion perpendicular to the longitudinal direction of the first coupling rod.
  • An advantageous embodiment of the invention provides that the curved second section of the link guide a first, adjacent to the first section and towards the first section extending end region and a second, end region running approximately perpendicular to the first section having.
  • This configuration of the backdrop guide enables movement of the field electrode at the same speed like the first coupling rod, as long as the Pin is located in the first section of the backdrop guide, and a delay in the movement of the field electrode while moving the pin is located in the second section of the slide guide.
  • the second section of the scenery guide is useful facing the drivable arcing contact. Thereby is during a pulling movement of the first coupling rod during opening the circuit breaker the pin to End of the switch-off movement in the second section of the Backdrop guide moves, so that the speed of the Field electrode decreases to a standstill.
  • the second coupling rod coupled to the field electrode be connected to a traverse in the direction of the longitudinal axis of the switch is slidably guided and the one vertically to the switch longitudinal axis extending slot in the the pin attached to the lever engages.
  • a Slot leaves the necessary movements of the pen vertically to the switch longitudinal axis, the drive movement by means of the pin on the perpendicular to the longitudinal direction of the first Coupling rod-running traverse and from there to the field electrode is transmitted.
  • the transmission according to the invention can be on the opposite side of the drive Side of the high voltage circuit breaker, i.e. seen from the first arcing contact behind the field electrode, are arranged so that the gear dielectric through those in the area between the arcing contact pieces prevailing field strength is not loaded.
  • the drive mechanism for the Field electrode with a drive for the second arcing contact to combine, in such a way that the second Arc contact piece on only part of the switching stroke of the driving first continuous current contact is driven and that during this drive phase the oppositely driven second arcing contact piece on a specifiable Passes a pronounced maximum speed.
  • a reversing gear driving pin is provided, wherein the reversing gear has a two-armed, two stable end positions having control lever, of the two The one ends fork-like for the backdrop-like reception of the pin designed and the other on a pendulum element the second arcing contact piece is articulated, and that the stationary parts of the gear for the field electrode and the stationary parts of the reversing gear for the second arcing contact one behind the other in the axial direction of the circuit breaker are arranged on a common circuit board.
  • the proposed design of the deflection gear enables the movement of the second arcing contact piece on the Movement of the field electrode to match that of the second arcing contact during the compression stroke of the circuit breaker remains in the rest position during the separation stroke moved quickly in the opening direction and into the disconnected position is brought and in the rest position during the extinguishing stroke remains.
  • the design of the reversing gear is characterized by the use of less, easier and lighter parts, so that the reversing gear is very small has moving masses and a self-contained assembly represents that can be formed flat and therefore which are in the fixed continuous current contact when switching the forming flow of the insulating gas (exhaust gas) is not impeded.
  • the deflection gear continues to show itself during of the actuating process changing gear ratio on, which is designed in the manner of a sine half-wave and in Maximum can be more than 1: 1, i.e. the opposite driven second arcing contact can during the decisive phase of the switch-off process (phase of contact separation and the increasing contact distance) with one greater speed than the first arcing contact.
  • the reversing gear is by means of same coupling rod driven, which also drives the Gearbox is used for the field electrode. This is at the first Coupling rod arranged a pin which - analogous to that pivotable lever of the gearbox for the field electrode - that Movable part of the deflection gear forms.
  • the gear for the field electrode and the deflection gear for the second arcing contact on a common circuit board arranged one behind the other in the axial direction of the line switch you get a compact, flat gear unit
  • the - separately mountable - in the outflow area of the extinguishing gas can be inserted without the extinguishing gas flow to hinder and without an additional length of the circuit breaker.
  • This has an advantageous effect from that the coupling of the two gears to the Insulating material nozzle together via one or two first coupling rods takes place and therefore also the bearings for the axially moving Gear parts are effective for both gears.
  • the one for articulating the control lever to the second arcing contact piece provided pendulum element can be to act as a connecting rod or a pin that slides into an elongated hole engages on the second arcing contact.
  • the first coupling rod on a bearing cheek of the board is that the axis of rotation of the two-armed control lever between the first coupling rod and the axis of the second Arcing contact piece lies with the common Circuit board is firmly connected, that of the two-armed Control lever in its stable end positions diagonally to the first Coupling rod and to the axis of the second arcing contact runs beyond that the fork-shaped End of the control lever between the two tines with an elongated, mouth-like recess is provided and that the other located at the other end of the control lever Pin also transversely to the direction of thrust of the first coupling rod is arranged; the elongated hole is located in that this pin engages in one on the second arcing contact piece arranged headboard, which in turn in the connected to the fixed part of the sliding contact Plain bearing is guided axially.
  • the fork-like design one end of the control lever can with respect to the mouth-like recess are designed so that the initiation and deriving the axial movement into and out of second arcing contact piece takes place without impact.
  • safe control of the control lever in its three positions "off position" To ensure “movement phase” and "on position” points in a development of the invention, the first coupling rod Slideway on the one with the swivel range of the fork-like designed end of the control lever releasing recess is provided, and the two prongs of the fork-like designed end of the control lever on the outside with flats The control lever is in contact with the slideway of the first coupling rod to be provided in the two end positions of the control lever.
  • the interrupter unit shown in Figure 1 has in the upper Part of a fixed arcing contact 1 and a fixed continuous current contact piece 2, which a drivable first arcing contact piece 3 and a drivable Continuous current contact piece 4 face.
  • the switch-on state is shown in which the drivable first arcing contact piece 3 a fixed, engages pin-shaped second arcing contact piece 1 and the drivable continuous current contact piece 4 in the fixed Continuous current contact piece 2 is retracted.
  • the right half cut shows the switch-off position in which the continuous current contacts and the arcing contacts through a disconnect are separated from each other.
  • the drivable first arcing contact piece 3 is one Isolating nozzle 5 surrounded, which is fixed to the drivable contact pieces of the switch is connected and their nozzle constriction 6 has a diameter which corresponds to the outer diameter of the fixed second arcing contact piece 1 corresponds.
  • the insulating nozzle 5 has a channel 7 through which in the case an arc drawn between the arcing contacts hot extinguishing gas can flow into a boiler room 8, in which it for subsequent blowing of the arc during the Current zero crossing of the current to be switched is provided becomes.
  • a compression chamber 9 is arranged downstream of the heating chamber 8, in which extinguishing gas, for example SF 6 , is compressed in the course of a switch-off movement by the compression piston 10, which is driven, within the fixed compression cylinder 11. As soon as the extinguishing gas pressure in the compression space 9 is higher than in the heating space 8, extinguishing gas flows through the check valve 12 into the heating space. Otherwise, a flow from the heating chamber 8 into the compression chamber 9 is blocked so that the drive is not burdened by an excessive pressure in the compression chamber.
  • extinguishing gas for example SF 6
  • the permanent current contact pieces 2, 4 are of fixed shielding electrodes 13, 14 surround the in the event of a shutdown electrical field between the contacts should equalize.
  • a movable field electrode 15 is provided, the one in the right half section in the on position, is shown in the off position on the left.
  • the switch drive which is not shown in the figure, attacks on the switching tube 16, which is the drivable first Arcing contact 3 carries. Together with the drivable Arcing contact 3 is both the nozzle and the Compression device moves. This will turn it off the drivable arcing contact 3 and the drivable Continuous current contact piece • 4 of the respective counter contact loosened and the insulating nozzle is moved until the nozzle constriction from the fixed arcing contact piece 1 is released. Then the extinguishing gas from the Arc area on the fixed second arcing contact piece 1 over and up to other areas of the Flow out the control vessel.
  • the free end 17 of the insulating nozzle is with a first coupling rod 18 connected, for example by means of a Fixed nozzle end and this encircling ring.
  • a lever 20 pivotally mounted on his pivotable end carries a pin 21.
  • the longitudinal axis of this The pen is perpendicular to the drawing plane or to the swivel plane of the lever 20.
  • a sheet 22 is arranged in each case, wherein in the sheets 22 each have two aligned guide guides 23 are provided in the form of milled slots. In these Link guides 23 move the pin 21 during the movement the first coupling rod 18.
  • the configuration is symmetrical, so that a first for each of the scenery tours Coupling rod 18 or a lever 20 and a pin 21 belong.
  • the symmetrical training is not absolutely necessary however, this reduces the risk of canting.
  • each backdrop guide in the form of two sheets 22 on either side of the longitudinal axis of the switch are arranged parallel to this, the outflow of Extinguishing gas is not hindered in this axial direction. So it is also no corrosion of this device or the gear fear from the influence of hot extinguishing gases.
  • the first coupling rod 18 in Accelerated in the direction of arrow 24. Because the scenery 23 in its first section 29 (FIG. 1, left half section) runs parallel to the longitudinal direction of the first coupling rod 18, changes the angle between the lever 20 and the first coupling rod 18 initially not, d. H. the pin 21 moves itself at the same speed as the first coupling rod 18 to the first end region 30 of the second section 32 (see also FIG. 2a).
  • the pin 21 actuates during this movement, which at the beginning at the same speed as that of the first coupling rod 18 takes place and is later decelerated, a traverse 26, which has for this purpose a slot 27 in which the Pin 21 perform a horizontal movement relative to the crossbar can.
  • the traverse 26 is the second coupling rod 28 or a pair of two coupling rods connected to their the lower end of the field electrode 15 is attached.
  • the transmission described causes that during the opening movement the field electrode 15 initially at the same speed like the contact pieces towards the isolating section or moved to the arc room 33.
  • the path that the field electrode 15 traveled, but is not as large as the path of the contact pieces and the field electrode 15 remains, as in FIG. 1, right half section shown, in a position in which them together with the shielding electrode 14 and the fixed one Arc contact piece 1 generates an optimal field contour.
  • This electrode position is reached before the stroke ends, see above that the optimal shielding during the remaining stroke, d. H. while the arc extinguishing is reached.
  • the transmission described ensures that the Field electrode by positive control in every phase of the Switching movement the most favorable for the dielectric conditions Takes position.
  • the switch described is also in terms of design of the gearbox constructed symmetrically with the same parts in both halves of Figure 1. This serves the Functional reliability and the symmetry of the force effects (against canting and lateral forces); is fundamental, however only one-sided design of the gearbox possible.
  • Figure 3 shows sections of the fixed continuous current contact 2 one High-voltage circuit breaker, in the left from the axial drivable continuous current contact piece 4, not shown here. 4 with the insulating nozzle 5 attached to it and the first, axially drivable and also not shown arcing contact piece 3.
  • the figure shows the switch-on position of the drivable continuous current contact piece with the insulating nozzle 5. In this switch-on position, the insulating nozzle surrounds 5 the oppositely driven second arcing contact piece 25 along its entire length.
  • the isolation nozzle 5 At the end 17 of the isolation nozzle 5 are symmetrical to the longitudinal axis of the circuit breaker two first coupling rods 18 attached, the one hand over two levers 20 provided with a pin 21, the link guide 23, the cross member 26 and the second coupling rods 28 die Drive field electrode 15 and of which, on the other hand, the lower one to drive the arcing contact piece 25 by means of a Deflection gear additionally has a pin 35 which transverse to the direction of thrust with a U-shaped cross section provided lower first coupling rod 18 is arranged.
  • the lower first coupling rod 18 can also be L-shaped or T-shaped Have cross-section, each with a cross-sectional part a sliding surface for guiding the coupling rod 18 forms along a bearing cheek 57 formed on the circuit board 56.
  • the board 56 is one on the contact bridge 38 with the fixed continuous current contact piece 2 connected sliding contact 34 attached and according to Figures 4 and 5 with two arranged in the longitudinal direction symmetrically to the center line ML Bearing cheeks 57 provided to guide the upper, provided for driving the field electrode 15 first coupling rod 18 and to guide the lower one, to drive both the Field electrode 15 and the second arcing contact piece 25 provided the first coupling rod 18.
  • the Board 56 are also two bearing cheeks 58 for guiding one incorporated flat head 43 shown in Figure 3, which is at the rear end of the second arcing contact piece 25 is located.
  • the slide guides are in the board 56 23 for the pins 21 of the gearbox for the Field electrode 15 incorporated.
  • the bearing cheeks 58 and the Link guides 23 are in the longitudinal direction of the board 56 arranged one behind the other, the bearing cheeks 58 the Arc room 33 (Fig. 1 of the main patent) are facing.
  • FIG 6 which is a cross section along the section line F-G in Figure 3, two boards 56 are mirror symmetrical to the longitudinal axis of the high-voltage circuit breaker arranged and enclosed by a traverse 26; this traverse connects the two second coupling rods 28 with each other; on the other hand, are in the two side walls 59 and 60 vertical slots 27 for the engagement of the pins 21 provided.
  • the traverse 26 also encloses the two first coupling rods 18, these by two spacers 61 are kept at a distance from the second coupling rods 28.
  • this is opposite to the first arcing contact piece 3 drivable second arcing contact piece 25 on the arc switching path 33 (Fig. 1 of the main patent) end facing away from the flat head 43, which is guided in the bearing cheeks 58 of the boards 56.
  • the flat head 43 is vertical to the first coupling rod 18 extending slot 42 provided.
  • the two tines 46 and 47 are on the outside with one Provide contact surface 49 or 50 with which the control lever 40 - depending on his position - to invest in the a bottom 51 of the U-shaped cross-sectional profile forming a slideway the lower first coupling rod 18 comes.
  • stops 53 and 54 on the boards 56 it is ensured that the control lever 40 in the respective contact position persists.
  • the two investment positions represent end positions between which the control lever 40 under the Effect of the pin 35 is moved. So that the fork-like end perform a rotary movement about the axis of rotation 55 can, the lower first coupling rod 18 is in the bottom 51 of the U-shaped Cross section provided with an elongated slot 36. A similar slot may be in the lower one second coupling rod 28 is provided.
  • the first coupling rod passes 18 and thus the pin 35 starting from that shown in Figure 3 Position continuously different intermediate positions, of which Figures 8 and 9 represent those which the head 43 and thus the associated oppositely driven Arcing contact piece 25 shortly before and shortly after Take the maximum speed, and figure 10 the other end position of the control lever 40. Following the position according to FIG. 10 can be the first coupling rod 18 move further to the left without the control lever 40 changed his position.
  • the coupling rods 18 and 28 are the head 43 and the Lever 20 shown in one end position.
  • the lever 20 and the link guide 23 for driving the Field electrode 15 and the control lever 40 for driving the second Arcing contact piece 25 can be dimensioned so that the field electrode after about two thirds of the switching stroke the continuous current contact piece 4 and the first arcing contact piece 3 has reached its end position and that second arcing contact piece 25 only during a middle one Section of the switching stroke is driven and its end position occupies before the field electrode 15 its end position has reached.

Abstract

The invention relates to a high-voltage power switch with arcing contact pieces (1, 3) which can be moved in relation to each other, and an axially moveable insulating nozzle (5). An axially displaceable field electrode (15) is provided on the opposite side to the driving gear. Said rod is coupled to the axially moveable insulating nozzle (5), and acts upon a gearing which consists of a pivotable lever (20) with control pins (21), of a gate guide (23) and a second connector rod (21) coupled to the control pin (21) and to the field electrode (15). For supplementary drive of the second arcing contact piece (25), which is surrounded by the field electrode (15), the first connecting rod (18) also acts, by means of a pin (35), upon corner gears which consist of a double armed lever (40) configured at one end like a fork (46, 47), facing towards the gate-like guide of the pin, and a pendulum element (41, 42) at the other end of the lever, connected to the second arcing contact piece (25).

Description

Die Erfindung liegt auf dem Gebiet der Hochspannungs-Leistungsschalter und ist bei der konstruktiven Ausgestaltung eines Hilfsgetriebes anzuwenden, mit dem Schalterelemente bewegt werden, die der angetriebenen Kontaktgruppe des Schalters axial gegenüberliegen.The invention is in the field of high voltage circuit breakers and is in the design to apply an auxiliary transmission with which the switch elements are moved be the driven contact group of the switch axially opposite.

Bei Leistungsschaltern dieser Art sind zwei einander koaxial gegenüberstehende Lichtbogenkontaktstücke koaxial von den beiden Dauerstromkontaktstücken umgeben, von denen das eine feststehend angeordnet und das andere axial antreibbar ausgebildet ist. Derartige Leistungsschalter arbeiten in aller Regel mit einem gasförmigen Löschmittel, das im Schaltfall zunächst verdichtet wird und dann den Trennbereich der beiden Lichtbogenkontaktstücke durchströmt und dessen Strömung durch spezielle Druckräume und Düsen beeinflußbar ist. Hierzu dient u.a. eine Isolierstoffdüse, die innerhalb der Dauerstromkontaktstücke angeordnet ist und die Lichtbogenkontaktstücke umgibt und die sowohl mit dem antreibbaren Dauerstromkontaktstück als auch mit dem angetriebenen Lichtbogenkontaktstück fest verbunden ist.In circuit breakers of this type, two are coaxial opposing arcing contacts coaxially from the surrounded two continuous current contact pieces, one of which arranged stationary and the other axially drivable is. Such circuit breakers usually work with a gaseous extinguishing agent, which, when switched, initially is compressed and then the separation area of the two Flows through arcing contact pieces and its flow through special pressure rooms and nozzles can be influenced. This serves i.a. an insulating nozzle inside the continuous current contact pieces is arranged and surrounds the arcing contact pieces and both with the drivable continuous current contact piece as well as with the driven arcing contact is firmly connected.

Bei einem bekannten Leistungsschalter dieser Art (EP 0 696 040 A1) ist an dem dem ersten, angetriebenen Lichtbogenkontaktstück abgewandten Ende der Isolierstoffdüse eine mit der Isolierstoffdüse axial verschiebbare Feldelektrode befestigt, die das zweite Lichtbogenkontaktstück umgibt und die in der Ausstellung des Leistungsschalters das elektrische Feld im Bereich des anderen Lichtbogenkontaktstückes und des elektrisch hochbelasteten Endes der Isolierstoffdüse beeinflußt. - Bei diesem bekannten Leistungsschalter ist zusätzlich das zweite Lichtbogenkontaktstück entgegengesetzt zum ersten Lichtbogenkontaktstück antreibbar. Hierzu ist an der axial verschiebbaren Feldelektrode und damit an der Isolierstoffdüse ein Antriebselement befestigt, das mittels eines Umlenkgetriebes die Antriebsbewegung des angetriebenen Dauerstromkontaktstückes auch auf das zweite Lichtbogenkontaktstücke überträgt. Das zweite Lichtbogenkontaktstück ist daher in einem Gleitkontakt geführt. Bei dem Umlenkgetriebe ist das Antriebselement als Zahnstange ausgebildet, die entweder über ein Zahnrad auf das ebenfalls als Zahnstange ausgebildete zweite Lichtbogenkontaktstück einwirkt oder die eine Schubkurbel antreibt, deren rotierendes Teil von einem Zahnrad gebildet wird.In a known circuit breaker of this type (EP 0 696 040 A1) is on the first, driven arcing contact piece opposite end of the insulating nozzle with the insulating material axially displaceable field electrode attached, which surrounds the second arcing contact piece and which in the exhibition of the circuit breaker the electrical Field in the area of the other arcing contact piece and electrically highly loaded end of the insulating nozzle. - This known circuit breaker is additional the second arcing contact opposite to first arcing contact piece can be driven. This is at the axially displaceable field electrode and thus on the insulating nozzle attached a drive element, which by means of a Deflection gear the drive movement of the driven continuous current contact piece also on the second arcing contact pieces transmits. The second arcing contact piece is therefore guided in a sliding contact. With the reversing gear it is Drive element designed as a rack that either over a gear on the also designed as a rack second arcing contact piece acts or a push crank drives whose rotating part is formed by a gear becomes.

Bei diesem bekannten Leistungsschalter folgt die an der Isolierstoffdüse befestigte Feldelektrode dem vollen Hub der Kontaktstücke; das bedeutet, daß die Feldelektrode in der Einschaltstellung relativ weit in das feststehende Dauerstromkontaktstück eingeschoben ist, wozu ein entsprechender Raum vorhanden sein muß. Auch die Bewegung des zweiten Lichtbogenkontaktstückes ist an den vollen Hub der angetriebenen Kontaktstücke gekoppelt.In this known circuit breaker, this follows at the insulating nozzle attached field electrode to the full stroke of the Contact pieces; that means that the field electrode in the Switch-on position relatively far into the fixed continuous current contact piece is inserted, for which a corresponding Space must be available. Also the movement of the second arcing contact piece is driven to the full stroke Contact pieces coupled.

Ausgehend von einem Hochspannungs-Leistungsschalter mit den Merkmalen des Oberbegriffes des Patentanspruches 1 liegt der Erfindung die Aufgabe zugrunde, den Bewegungsablauf der Feldelektrode unter Verkürzung ihres Bewegungshubes zu optimieren und gegebenenfalls das Zusammenspiel mit einem Antriebsmechanismus für das zweite Lichtbogenkontaktstück zu verbessern.Starting from a high voltage circuit breaker with the Features of the preamble of claim 1 is the Invention based on the task of moving To optimize the field electrode by shortening its stroke and possibly the interaction with a drive mechanism for the second arcing contact improve.

Zur Lösung dieser Aufgabe gemäß der Erfindung ist vorgesehen, daß die Feldelektrode mittels eines Getriebes verschiebbar ist, das aus einer ersten, über die Isolierstoffdüse an den antreibbaren Dauerstromkontakt angekoppelten und in Richtung der Schalterlängsachse verlaufenden Koppelstange, aus einer parallel dazu verlaufenden, an die Feldelektrode angekoppelten zweiten Koppelstange und aus einem an der ersten Koppelstange schwenkbar befestigten Hebel besteht, wobei an dem schwenkbaren Teil des Hebels ein dessen Schwenkebene durchsetzender Stift befestigt ist, an den die zweite Koppelstange angekoppelt ist und der in eine Kulissenführung eingreift, die in eine mit dem zweiten Dauerstromkontaktstück fest verbundene Platine eingearbeitet ist und die derart gestaltet ist, daß ein erster Abschnitt der Kulissenführung annähernd parallel zur Längsrichtung der ersten Koppelstange verläuft und daß ein zweiter, gekrümmter Abschnitt der Kulissenführung ein Ausweichen des Stiftes senkrecht zur Schalterlängsachse erlaubt.To achieve this object according to the invention, that the field electrode is displaceable by means of a gear is that from a first, through the insulating nozzle to the drivable continuous current contact coupled and in the direction the switch longitudinal axis extending coupling rod, from a parallel to it, coupled to the field electrode second coupling rod and one on the first coupling rod there is pivotally attached lever, on which pivotable part of the lever penetrating its pivoting plane Pin is attached to the second coupling rod is coupled and which engages in a guide, the one firmly connected to the second continuous current contact piece Circuit board is incorporated and designed in this way is that a first section of the backdrop guide is approximately runs parallel to the longitudinal direction of the first coupling rod and that a second, curved section of the link guide a dodge of the pin perpendicular to the longitudinal axis of the switch allowed.

Durch ein solches Getriebe ist die Feldelektrode separat und getrennt von dem antreibbaren Lichtbogenkontaktstück bewegbar, so daß die Geschwindigkeit und der Weg der Feldelektrode unterschiedlich von der des ersten Lichtbogenkontaktstückes sein kann, wobei der Verlauf der Verschiebebewegung gezielt in Form eines Geschwindigkeitsprofils vorgebbar ist.With such a gearbox, the field electrode is separate and movable separately from the drivable arcing contact piece, so the speed and path of the field electrode different from that of the first arcing contact can be targeted, the course of the displacement movement can be specified in the form of a speed profile.

Die Besonderheit des Getriebes besteht in dem an der ersten Koppelstange schwenkbar gelagerten Hebel mit dem am Schwenkarm des Hebels befestigten und in einer ortsfesten Kulissenführung geführten Stift. Ein erster Abschnitt der Kulissenführung verläuft annähernd parallel zur Längsrichtung der ersten Koppelstange. In diesem Bereich wird während der Bewegung der ersten Koppelstange der Stift entlang der Kulissenführung bewegt, ohne daß der Hebel ausschwenkt. Erst in dem zweiten Abschnitt der Kulissenführung, die ein Ausweichen des Stiftes senkrecht zu der Längsrichtung, in der die Koppelstange bewegt wird, erlaubt, schwenkt der Hebel aus, und der Stift bewegt sich zumindest mit einer Bewegungskomponente senkrecht zur Längsrichtung der ersten Koppelstange. Hierdurch ist die Bewegungskomponente des Stiftes parallel zur Längsrichtung der ersten Koppelstange (Schalterlängsachse) verlangsamt und kommt schließlich zum Stillstand, wobei der Hebel weiter durchschwenkt und der Stift sich nur noch senkrecht zur Längsrichtung bewegt. Da die Feldelektrode über die zweite Koppelstange an den Stift angekoppelt ist, ist in dieser letzten Phase der Bewegung die Geschwindigkeit der Feldelektrode in Richtung parallel zur Längsrichtung der Stange bis zum Stillstand verringert.The peculiarity of the transmission is that of the first Coupling rod swivel-mounted lever with the on the swivel arm attached to the lever and in a fixed link guide led pen. A first section of the scenery tour runs approximately parallel to the longitudinal direction of the first Coupling rod. This area is used during the movement the first coupling rod the pin along the slide guide moved without the lever swinging out. Only in that second section of the scenery guide, which is an evasion of the Pin perpendicular to the longitudinal direction in which the coupling rod is allowed to move, the lever swings out, and the Pen moves with at least one component of motion perpendicular to the longitudinal direction of the first coupling rod. Hereby is the movement component of the pen parallel to Longitudinal direction of the first coupling rod (switch longitudinal axis) slows down and eventually comes to a standstill, with the The lever swings further and the pin is only vertical moved to the longitudinal direction. Since the field electrode over the second coupling rod is coupled to the pin, is in this last phase of the movement the speed of the field electrode in the direction parallel to the longitudinal direction of the rod reduced to a standstill.

Somit läßt sich mittels der Kulissenführung eine Bewegung der Feldelektrode erzeugen, die gleichsinnig mit der Bewegung der ersten Koppelstange, jedoch mit anderer Geschwindigkeit und variablem Übersetzungsverhältnis erfolgt. Dies geht soweit, daß der Stift und mit ihm die Feldelektrode sich in Längsrichtung nicht weiterbewegt, während die erste Koppelstange weiter bewegt wird. Auf diese Weise kann beim Ausschaltvorgang die Feldelektrode mit dem ersten Lichtbogenkontaktstück zu Beginn der Bewegung zunächst mitbewegt, jedoch vor Ende der Bewegung des ersten Lichtbogenkontaktstückes gestoppt werden, d.h. die Bewegungsstrecke der Feldelektrode ist gegenüber der Bewegungsstrecke des ersten Lichtbogenkontaktstückes verkürzt.Thus, a movement of the Generate field electrode that coincides with the movement of the first coupling rod, but at a different speed and variable transmission ratio. This goes so far that the pin and with it the field electrode extend in the longitudinal direction stopped moving while the first link rod is moved further. In this way, when switching off the field electrode with the first arcing contact piece moved at the beginning of the movement, but before the end the movement of the first arcing contact piece stopped become, i.e. the movement distance of the field electrode is opposite the movement distance of the first arcing contact piece shortened.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, daß der gekrümmte zweite Abschnitt der Kulissenführung einen ersten, dem ersten Abschnitt benachbarten und in Richtung des ersten Abschnitts verlaufenden Endbereich und einen zweiten, annähernd senkrecht zum ersten Abschnitt verlaufenden Endbereich aufweist. Diese Ausgestaltung der Kulissenführung ermöglicht eine Bewegung der Feldelektrode mit derselben Geschwindigkeit wie die erste Koppelstange, solange sich der Stift im ersten Abschnitt der Kulissenführung befindet, und eine Verzögerung der Bewegung der Feldelektrode, während sich der Stift in dem zweiten Abschnitt der Kulissenführung befindet. - Der zweite Abschnitt der Kulissenführung ist zweckmäβig dem antreibbaren Lichtbogenkontaktstück zugewandt. Dadurch wird bei einer Zugbewegung der ersten Koppelstange während des Ausschaltens des Leistungsschalters der Stift zum Ende der Ausschaltbewegung hin in dem zweiten Abschnitt der Kulissenführung bewegt, so daß dann die Geschwindigkeit der Feldelektrode bis zum Stillstand abnimmt.An advantageous embodiment of the invention provides that the curved second section of the link guide a first, adjacent to the first section and towards the first section extending end region and a second, end region running approximately perpendicular to the first section having. This configuration of the backdrop guide enables movement of the field electrode at the same speed like the first coupling rod, as long as the Pin is located in the first section of the backdrop guide, and a delay in the movement of the field electrode while moving the pin is located in the second section of the slide guide. - The second section of the scenery guide is useful facing the drivable arcing contact. Thereby is during a pulling movement of the first coupling rod during opening the circuit breaker the pin to End of the switch-off movement in the second section of the Backdrop guide moves, so that the speed of the Field electrode decreases to a standstill.

Zur weiteren vorteilhaften Ausgestaltung der Erfindung kann die an die Feldelektrode angekoppelte zweite Koppelstange mit einer Traverse verbunden sein, die in Richtung der Schalterlängsachse verschiebbar geführt ist und die einen senkrecht zur Schalterlängsachse verlaufenden Schlitz aufweist, in den der an dem Hebel befestigte Stift eingreift. Ein solcher Schlitz läßt die notwendigen Bewegungen des Stiftes senkrecht zur Schalterlängsachse zu, wobei mittels des Stiftes die Antriebsbewegung auf die senkrecht zur Längsrichtung der ersten Koppelstange verlaufende Traverse und von dort auf die Feldelektrode übertragen wird.For a further advantageous embodiment of the invention the second coupling rod coupled to the field electrode be connected to a traverse in the direction of the longitudinal axis of the switch is slidably guided and the one vertically to the switch longitudinal axis extending slot in the the pin attached to the lever engages. Such a Slot leaves the necessary movements of the pen vertically to the switch longitudinal axis, the drive movement by means of the pin on the perpendicular to the longitudinal direction of the first Coupling rod-running traverse and from there to the field electrode is transmitted.

Das erfindungsgemäße Getriebe kann auf der dem Antrieb gegenüberliegenden Seite des Hochspannungs-Leistungsschalters, d.h. von dem ersten Lichtbogenkontaktstück aus gesehen hinter der Feldelektrode, angeordnet werden, so daß das Getriebe dielektrisch durch die in dem Bereich zwischen den Lichtbogenkontaktstücken herrschende Feldstärke nicht belastet ist.The transmission according to the invention can be on the opposite side of the drive Side of the high voltage circuit breaker, i.e. seen from the first arcing contact behind the field electrode, are arranged so that the gear dielectric through those in the area between the arcing contact pieces prevailing field strength is not loaded.

Zur weiteren Ausgestaltung des Hochspannungs-Leistungsschalters ist es vorteilhaft, den Antriebsmechanismus für die Feldelektrode mit einem Antrieb für das zweite Lichtbogenkontaktstück zu kombinieren, und zwar derart, daß das zweite Lichtbogenkontaktstück auf nur einem Teil des Schalthubes des antreibenden ersten Dauerstromkontaktes angetrieben wird und daß während dieser Antriebsphase das entgegengesetzt angetriebene zweite Lichtbogenkontaktstück an einer vorgebbaren Stelle ein ausgeprägtes Geschwindigkeitsmaximum durchläuft. Dies erfolgt zweckmäßig in der Weise, daß das zweite Lichtbogenkontaktstück in einem Gleitkontakt geführt und entgegengesetzt zum ersten Lichtbogenkontaktstück antreibbar ist, daß zum Antrieb des zweiten Lichtbogenkontaktstückes die erste Koppelstange mit einem quer zur Schubrichtung angeordneten, ein Umlenkgetriebe antreibenden Zapfen versehen ist, wobei das Umlenkgetriebe einen zweiarmigen, zwei stabile Endstellungen aufweisenden Steuerhebel aufweist, von dessen beiden Enden das eine zur kulissenartigen Aufnahme des Zapfens gabelartig gestaltet und das andere über ein Pendelelement an das zweite Lichtbogenkontaktstück angelenkt ist, und daß die ortsfesten Teile des Getriebes für die Feldelektrode und die ortsfesten Teile des Umlenkgetriebes für das zweite Lichtbogenkontaktstück in Axialrichtung des Leistungsschalters hintereinander auf einer gemeinsamen Platine angeordnet sind.For further design of the high-voltage circuit breaker it is advantageous to use the drive mechanism for the Field electrode with a drive for the second arcing contact to combine, in such a way that the second Arc contact piece on only part of the switching stroke of the driving first continuous current contact is driven and that during this drive phase the oppositely driven second arcing contact piece on a specifiable Passes a pronounced maximum speed. This is advantageously done in such a way that the second arcing contact piece guided in a sliding contact and opposite is driven to the first arcing contact piece that the first to drive the second arcing contact piece Coupling rod with a transverse to the direction of thrust a reversing gear driving pin is provided, wherein the reversing gear has a two-armed, two stable end positions having control lever, of the two The one ends fork-like for the backdrop-like reception of the pin designed and the other on a pendulum element the second arcing contact piece is articulated, and that the stationary parts of the gear for the field electrode and the stationary parts of the reversing gear for the second arcing contact one behind the other in the axial direction of the circuit breaker are arranged on a common circuit board.

Die vorgesehene Ausgestaltung des Umlenkgetriebes ermöglicht, die Bewegung des zweiten Lichtbogenkontaktstückes so auf die Bewegung der Feldelektrode abzustimmen, daß das zweite Lichtbogenkontaktstück während des Verdichtungshubes des Leistungsschalters in Ruhestellung bleibt, während des Trennhubes schnell in Öffnungsrichtung bewegt und in die Trennstellung gebracht wird und während des Löschhubes wieder in Ruhestellung verbleibt. Die Ausgestaltung des Umlenkgetriebes zeichnet sich dabei durch die Verwendung weniger, einfacher und leichter Teile aus, so daß das Umlenkgetriebe sehr kleine bewegte Massen aufweist und eine in sich geschlossene Baugruppe darstellt, die flach ausgebildet werden kann und daher die in dem feststehenden Dauerstromkontakt sich im Schaltfall ausbildende Strömung des Isoliergases (Abgas) nicht behindert. Das Umlenkgetriebe weist weiterhin ein sich während des Betätigungsvorganges veränderndes Übersetzungsverhältnis auf, das nach Art einer Sinushalbwelle ausgebildet ist und im Maximum mehr als 1:1 betragen kann, d.h. das entgegengesetzt angetriebene zweite Lichtbogenkontaktstück kann während der entscheidenden Phase des Ausschaltvorganges (Phase der Kontakttrennung und des zunehmenden Kontaktabstandes) mit einer größeren Geschwindigkeit bewegt werden als das erste Lichtbogenkontaktstück. Das Umlenkgetriebe wird dabei mittels der gleichen Koppelstange angetrieben, die auch zum Antrieb des Getriebes für die Feldelektrode dient. Hierzu ist an der ersten Koppelstange ein Zapfen angeordnet, der - analog zu dem schwenkbaren Hebel des Getriebes für die Feldelektrode - das ortsveränderliche Teil des Umlenkgetriebes bildet. Da das Getriebe für die Feldelektrode und das Umlenkgetriebe für das zweite Lichtbogenkontaktstück auf einer gemeinsamen Platine in Achsrichtung des Leitungsschalters hintereinander angeordnet sind, erhält man eine kompakte, flach ausgebildete Getriebeeinheit, die - separat montierbar - in den Ausströmbereich des Löschgases eingefügt werden kann, ohne die Löschgasströmung zu behindern und ohne eine zusätzliche Baulänge des Leistungsschalters zu erfordern. Hierzu wirkt sich vorteilhaft aus, daß die Ankopplung der beiden Getriebe an die Isolierstoffdüse gemeinsam über eine oder zwei erste Koppelstangen erfolgt und daher auch die Lager für die axial bewegten Getriebeteile für beide Getriebe wirksam sind. - Durch Anordnung des Umlenkgetriebes in unmittelbarer Nähe zum zweiten Lichtbogenkontaktstück ist zwischen der Feldelektrode und dem ihr zugeordneten Getriebe eine relativ große Entfernung zu überbrücken, was mit Hilfe der zweiten Koppelstange erfolgt. - Dadurch, daß das Getriebe für die Feldelektrode axial hinter dem zweiten Lichtbogenkontaktstück liegt, kann auch die sehr flache Ausgestaltung dieses Getriebes beibehalten werden.The proposed design of the deflection gear enables the movement of the second arcing contact piece on the Movement of the field electrode to match that of the second arcing contact during the compression stroke of the circuit breaker remains in the rest position during the separation stroke moved quickly in the opening direction and into the disconnected position is brought and in the rest position during the extinguishing stroke remains. The design of the reversing gear is characterized by the use of less, easier and lighter parts, so that the reversing gear is very small has moving masses and a self-contained assembly represents that can be formed flat and therefore which are in the fixed continuous current contact when switching the forming flow of the insulating gas (exhaust gas) is not impeded. The deflection gear continues to show itself during of the actuating process changing gear ratio on, which is designed in the manner of a sine half-wave and in Maximum can be more than 1: 1, i.e. the opposite driven second arcing contact can during the decisive phase of the switch-off process (phase of contact separation and the increasing contact distance) with one greater speed than the first arcing contact. The reversing gear is by means of same coupling rod driven, which also drives the Gearbox is used for the field electrode. This is at the first Coupling rod arranged a pin which - analogous to that pivotable lever of the gearbox for the field electrode - that Movable part of the deflection gear forms. Because the gear for the field electrode and the deflection gear for the second arcing contact on a common circuit board arranged one behind the other in the axial direction of the line switch you get a compact, flat gear unit, the - separately mountable - in the outflow area of the extinguishing gas can be inserted without the extinguishing gas flow to hinder and without an additional length of the circuit breaker. This has an advantageous effect from that the coupling of the two gears to the Insulating material nozzle together via one or two first coupling rods takes place and therefore also the bearings for the axially moving Gear parts are effective for both gears. - By Arrangement of the reversing gear in close proximity to the second Arcing contact piece is between the field electrode and the gear assigned to it a relatively large distance to bridge what is done with the help of the second coupling rod. - In that the gear for the field electrode axially behind the second arcing contact piece, can also maintain the very flat design of this transmission become.

Bei dem zur Anlenkung des Steuerhebels an das zweite Lichtbogenkontaktstück vorgesehenen Pendelelement kann es sich um einen Pleuel handeln oder um einen Zapfen, der in ein Langloch am zweiten Lichtbogenkontaktstück eingreift. The one for articulating the control lever to the second arcing contact piece provided pendulum element can be to act as a connecting rod or a pin that slides into an elongated hole engages on the second arcing contact.

Um das zweite Lichtbogenkontaktstück an einer vorgebbaren Stelle ein ausgeprägtes Geschwindigkeitsmaximum durchlaufen zu lassen, ist das Umlenkgetriebe zweckmäßig so ausgebildet, daß die erste Koppelstange an einer Lagerwange der Platine geführt ist, daß die Drehachse des zweiarmigen Steuerhebels zwischen der ersten Koppelstange und der Achse des zweiten Lichtbogenkontaktstückes liegt und dabei mit der gemeinsamen Platine fest verbunden ist, daß weiterhin der zweiarmige Steuerhebel in seinen stabilen Endstellungen schräg zur ersten Koppelstange und zur Achse des zweiten Lichtbogenkontaktstückes verläuft, daß darüber hinaus das gabelartig gestaltete Ende des Steuerhebels zwischen den beiden Zinken mit einer länglichen, maulartigen Ausnehmung versehen ist und daß der an dem anderen Ende des Steuerhebels angeordnete weitere Zapfen ebenfalls quer zur Schubrichtung der ersten Koppelstange angeordnet ist; dabei befindet sich das Langloch, in das dieser Zapfen eingreift, in einem am zweiten Lichtbogenkontaktstück angeordneten Kopfteil, das seinerseits in dem mit dem feststehenden Teil des Gleitkontaktes verbundenen Gleitlager axial geführt ist. - Die gabelartige Gestaltung des einen Endes des Steuerhebels kann dabei bezüglich der maulartigen Ausnehmung so ausgeführt werden, daß die Einleitung und Ausleitung der Axialbewegung in das bzw. aus dem zweiten Lichtbogenkontaktstück schlagfrei erfolgt. - Um bei möglichst gedrängter Bauweise eine sichere Führung des Steuerhebels in seinen drei Positionen "Aus-Stellung", "Bewegungsphase" und "Ein-Stellung" zu gewährleisten, weist in Weiterbildung der Erfindung die erste Koppelstange eine Gleitbahn auf, die mit einer den Schwenkbereich des gabelartig gestalteten Endes des Steuerhebels freigebenden Ausnehmung versehen ist, und sind die beiden Zinken des gabelartig gestalteten Endes des Steuerhebels außen mit Abflachungen zur Anlage des Steuerhebels an die Gleitbahn der ersten Koppelstange in den beiden Endstellungen des Steuerhebels zu versehen. Zur Stabilisierung dieser beiden Endstellungen sind zweckmäßig weiterhin zwei an der gemeinsamen Platine und damit am feststehenden Teil des Gleitlagers fixierte Anschläge vorzusehen, an denen der Steuerhebel mit jeweils einer seiner Abflachungen zur Anlage kommt. Dadurch ist ein Überschwingen des Steuerhebels nach Beendigung des Eingriffes zwischen Zapfen und gabelartigem Ende des Steuerhebels ausgeschlossen.Around the second arcing contact piece on a specifiable Go through a pronounced maximum speed to allow the deflection gear is appropriately designed that the first coupling rod on a bearing cheek of the board is that the axis of rotation of the two-armed control lever between the first coupling rod and the axis of the second Arcing contact piece lies with the common Circuit board is firmly connected, that of the two-armed Control lever in its stable end positions diagonally to the first Coupling rod and to the axis of the second arcing contact runs beyond that the fork-shaped End of the control lever between the two tines with an elongated, mouth-like recess is provided and that the other located at the other end of the control lever Pin also transversely to the direction of thrust of the first coupling rod is arranged; the elongated hole is located in that this pin engages in one on the second arcing contact piece arranged headboard, which in turn in the connected to the fixed part of the sliding contact Plain bearing is guided axially. - The fork-like design one end of the control lever can with respect to the mouth-like recess are designed so that the initiation and deriving the axial movement into and out of second arcing contact piece takes place without impact. - To at as compact as possible, safe control of the control lever in its three positions "off position", To ensure "movement phase" and "on position" points in a development of the invention, the first coupling rod Slideway on the one with the swivel range of the fork-like designed end of the control lever releasing recess is provided, and the two prongs of the fork-like designed end of the control lever on the outside with flats The control lever is in contact with the slideway of the first coupling rod to be provided in the two end positions of the control lever. To stabilize these two end positions are expediently two more on the common board and thus stops fixed to the fixed part of the plain bearing to provide on which the control lever with one of its Flattening comes to the plant. This is an overshoot the control lever after completion of the engagement between pins and fork-like end of the control lever excluded.

Zwei Ausführungsbeispiele der Erfindung sind in den Figuren 1 bis 10 dargestellt. Dabei zeigen

Figur 1
ein erstes Ausführungsbeispiel einer Unterbrechereinheit eines Hochspannungs-Leistungsschalters mit einem Getriebe zum Antrieb einer Feldelektrode in einem Längsschnitt,
Figuren 2a und 2b
einen Teil des Getriebes aus Figur 1 in zwei verschiedenen Stellungen,
Figuren 3 bis 10
ein zweites Ausführungsbeispiel einer Unterbrechereinheit eines Hochspannungs-Leistungsschalters mit einer Kombination eines Getriebes für die Feldelektrode und eines Umlenkgetriebes für das zweite Licht bogenkontaktstück, und davon
Figur 3
die Zuordnung des Umlenkgetriebes zu dergemeinsamen, am feststehenden Dauerstromkontaktstück des Leistungsschalters befestigten Platine, und zwar in der einen Endstellung,
Figuren 4 und 5
die die ortsfesten Teile der beiden Getriebe aufnehmende Platine in Seiten und Stirnansicht,
Figur 6
einen Querschnitt durch das Getriebe für die Feldelektrode,
Figur 7
einen Querschnitt durch das Umlenkgetriebe für das zweite Lichtbogenkontaktstück und
Figuren 8 bis 10
das Umlenkgetriebe in zwei Zwischenstellungen und der anderen Endstellung des Steuerhebels.
Two embodiments of the invention are shown in Figures 1 to 10. Show
Figure 1
1 shows a first exemplary embodiment of an interrupter unit of a high-voltage circuit breaker with a gear for driving a field electrode in a longitudinal section,
Figures 2a and 2b
part of the transmission from Figure 1 in two different positions,
Figures 3 to 10
a second embodiment of an interrupter unit of a high-voltage circuit breaker with a combination of a gear for the field electrode and a deflection gear for the second arcing contact, and thereof
Figure 3
the assignment of the reversing gear to the common circuit board attached to the fixed continuous current contact piece of the circuit breaker, in one end position,
Figures 4 and 5
the side and front view of the stationary parts of the two gears,
Figure 6
a cross section through the gear for the field electrode,
Figure 7
a cross section through the deflecting gear for the second arcing contact and
Figures 8 to 10
the reversing gear in two intermediate positions and the other end position of the control lever.

Die in Figur 1 dargestellte Unterbrechereinheit weist im oberen Teil ein feststehendes Lichtbogenkontaktstück 1 sowie ein feststehendes Dauerstromkontaktstück 2 auf, denen ein antreibbares erstes Lichtbogenkontaktstück 3 und ein antreibbares Dauerstromkontaktstück 4 gegenüberstehen. Im linken Halbschnitt ist der Einschaltzustand dargestellt, in dem das antreibbare erste Lichtbogenkontaktstück 3 ein feststehendes, stiftförmiges zweites Lichtbogenkontaktstück 1 umgreift und das antreibbare Dauerstromkontaktstück 4 in das feststehende Dauerstromkontaktstück 2 eingefahren ist. Der rechte Halbschnitt zeigt die Ausschaltstellung, in der die Dauerstromkontakte und die Lichtbogenkontakte durch eine Trennstrecke voneinander getrennt sind.The interrupter unit shown in Figure 1 has in the upper Part of a fixed arcing contact 1 and a fixed continuous current contact piece 2, which a drivable first arcing contact piece 3 and a drivable Continuous current contact piece 4 face. In the left half section the switch-on state is shown in which the drivable first arcing contact piece 3 a fixed, engages pin-shaped second arcing contact piece 1 and the drivable continuous current contact piece 4 in the fixed Continuous current contact piece 2 is retracted. The right half cut shows the switch-off position in which the continuous current contacts and the arcing contacts through a disconnect are separated from each other.

Das antreibbare erste Lichtbogenkontaktstück 3 ist von einer Isolierdüse 5 umgeben, die fest mit den antreibbaren Kontaktstücken des Schalters verbunden ist und deren Düsenengstelle 6 einen Durchmesser aufweist, der dem Außendurchmesser des feststehenden zweiten Lichtbogenkontaktstückes 1 entspricht. Die Isolierdüse 5 weist einen Kanal 7 auf, durch den im Falle eines zwischen den Lichtbogenkontakten gezogenen Lichtbogens heißes Löschgas in einen Heizraum 8 strömen kann, in dem es für eine nachfolgende Beblasung des Lichtbogens während des Stromnulldurchganges des zu schaltenden Stromes bereitgestellt wird.The drivable first arcing contact piece 3 is one Isolating nozzle 5 surrounded, which is fixed to the drivable contact pieces of the switch is connected and their nozzle constriction 6 has a diameter which corresponds to the outer diameter of the fixed second arcing contact piece 1 corresponds. The insulating nozzle 5 has a channel 7 through which in the case an arc drawn between the arcing contacts hot extinguishing gas can flow into a boiler room 8, in which it for subsequent blowing of the arc during the Current zero crossing of the current to be switched is provided becomes.

Dem Heizraum 8 ist ein Kompressionsraum 9 nachgeordnet, in dem im Zuge einer Ausschaltbewegung durch den mit angetriebenen Kompressionskolben 10 innerhalb des feststehenden Kompressionszylinders 11 Löschgas, beispielsweise SF6, komprimiert wird. Sobald der Löschgasdruck im Kompressionsraum 9 höher ist als im Heizraum 8, strömt durch das Rückschlagventil 12 Löschgas in den Heizraum. Ansonsten wird eine Strömung vom Heizraum 8 in den Kompressionsraum 9 gesperrt, um den Antrieb nicht durch einen überhöhten Druck im Kompressionsraum zu belasten.A compression chamber 9 is arranged downstream of the heating chamber 8, in which extinguishing gas, for example SF 6 , is compressed in the course of a switch-off movement by the compression piston 10, which is driven, within the fixed compression cylinder 11. As soon as the extinguishing gas pressure in the compression space 9 is higher than in the heating space 8, extinguishing gas flows through the check valve 12 into the heating space. Otherwise, a flow from the heating chamber 8 into the compression chamber 9 is blocked so that the drive is not burdened by an excessive pressure in the compression chamber.

Die Dauerstromkontaktstücke 2, 4 sind von feststehenden Abschirmelektroden 13, 14 umgeben, die im Ausschaltfall das elektrische Feld zwischen den Kontakten vergleichmäßigen sollen. Außerdem ist eine bewegliche Feldelektrode 15 vorgesehen, die im rechten Halbschnitt in der Einschaltstellung, links in der Ausschaltstellung gezeigt ist.The permanent current contact pieces 2, 4 are of fixed shielding electrodes 13, 14 surround the in the event of a shutdown electrical field between the contacts should equalize. In addition, a movable field electrode 15 is provided, the one in the right half section in the on position, is shown in the off position on the left.

Der Schalterantrieb, der in der Figur nicht dargestellt ist, greift an dem Schaltrohr 16 an, das den antreibbaren ersten Lichtbogenkontakt 3 trägt. Gemeinsam mit dem antreibbaren Lichtbogenkontaktstück 3 wird sowohl die Düse als auch die Kompressionseinrichtung bewegt. Beim Ausschalten werden hierdurch das antreibbare Lichtbogenkontaktstück 3 und das antreibbare Dauerstromkontaktstück• 4 von dem jeweiligen Gegenkontakt gelöst und die Isolierdüse wird soweit bewegt, bis die Düsenengstelle von dem feststehenden Lichtbogenkontaktstück 1 freigegeben wird. Danach kann das Löschgas aus dem Lichtbogenbereich an dem feststehenden zweiten Lichtbogenkontaktstück 1 vorbei und nach oben in andere Bereiche des Schaltgefäßes abströmen.The switch drive, which is not shown in the figure, attacks on the switching tube 16, which is the drivable first Arcing contact 3 carries. Together with the drivable Arcing contact 3 is both the nozzle and the Compression device moves. This will turn it off the drivable arcing contact 3 and the drivable Continuous current contact piece • 4 of the respective counter contact loosened and the insulating nozzle is moved until the nozzle constriction from the fixed arcing contact piece 1 is released. Then the extinguishing gas from the Arc area on the fixed second arcing contact piece 1 over and up to other areas of the Flow out the control vessel.

Das freie Ende 17 der Isolierdüse ist mit einer ersten Koppelstange 18 verbunden, beispielsweise mittels eines an dem Düsenende befestigten und dieses umgreifenden Ringes. An dem freien Ende der ersten Koppelstange 18 ist in einem Gelenkpunkt 19 ein Hebel 20 schwenkbar gelagert, der an seinem schwenkbaren Ende einen Stift 21 trägt. Die Längsachse dieses Stiftes steht senkrecht zur Zeichenebene bzw. zur Schwenkebene des Hebels 20. In Blickrichtung vor und hinter dem Hebel 20 ist jeweils ein Blech 22 angeordnet, wobei in den Blechen 22 jeweils zwei miteinander fluchtende Kulissenführungen 23 in Form von eingefrästen Schlitzen vorgesehen sind. In diesen Kulissenführungen 23 bewegt sich der Stift 21 während der Bewegung der ersten Koppelstange 18. Die Ausgestaltung ist symmetrisch, so daß zu jeder der Kulissenführungen eine erste Koppelstange 18 bzw. ein Hebel 20 und ein Stift 21 gehören. Die symmetrische Ausbildung ist nicht unbedingt notwendig, jedoch wird hierdurch die Gefahr von Verkantungen verringert. Durch die Ausgestaltung jeder Kulissenführung in Form von zwei Blechen 22, die beiderseits der Längsachse des Schalters parallel zu dieser angeordnet sind, wird die Abströmung von Löschgas in dieser Axialrichtung nicht behindert. Es ist somit auch keine Korrosion dieser Einrichtung bzw. des Getriebes durch den Einfluß heißer Löschgase zu befürchten.The free end 17 of the insulating nozzle is with a first coupling rod 18 connected, for example by means of a Fixed nozzle end and this encircling ring. To the free end of the first coupling rod 18 is at an articulation point 19 a lever 20 pivotally mounted on his pivotable end carries a pin 21. The longitudinal axis of this The pen is perpendicular to the drawing plane or to the swivel plane of the lever 20. Looking in front of and behind the lever 20, a sheet 22 is arranged in each case, wherein in the sheets 22 each have two aligned guide guides 23 are provided in the form of milled slots. In these Link guides 23 move the pin 21 during the movement the first coupling rod 18. The configuration is symmetrical, so that a first for each of the scenery tours Coupling rod 18 or a lever 20 and a pin 21 belong. The symmetrical training is not absolutely necessary however, this reduces the risk of canting. By designing each backdrop guide in the form of two sheets 22 on either side of the longitudinal axis of the switch are arranged parallel to this, the outflow of Extinguishing gas is not hindered in this axial direction. So it is also no corrosion of this device or the gear fear from the influence of hot extinguishing gases.

Bei einer Ausschaltbewegung wird die erste Koppelstange 18 in Richtung des Pfeiles 24 beschleunigt. Da die Kulissenführung 23 in ihrem ersten Abschnitt 29 (Figur 1, linker Halbschnitt) parallel zur Längsrichtung der ersten Koppelstange 18 verläuft, ändert sich der Winkel zwischen dem Hebel 20 und der ersten Koppelstange 18 zunächst nicht, d. h. der Stift 21 bewegt sich mit gleicher Geschwindigkeit wie die erste Koppelstange 18 bis zum ersten Endbereich 30 des zweiten Abschnitts 32 (vgl. auch Figur 2a).In the event of a switch-off movement, the first coupling rod 18 in Accelerated in the direction of arrow 24. Because the scenery 23 in its first section 29 (FIG. 1, left half section) runs parallel to the longitudinal direction of the first coupling rod 18, changes the angle between the lever 20 and the first coupling rod 18 initially not, d. H. the pin 21 moves itself at the same speed as the first coupling rod 18 to the first end region 30 of the second section 32 (see also FIG. 2a).

Sobald der Stift 21 in den gekrümmten zweiten Abschnitt 32 der Kulissenführung 23 gelangt, schwenkt der Hebel 20 entgegen dem Uhrzeigersinn weiter aus und der Stift 21 bewegt sich radial von der ersten Koppelstange 18 weg. Die Geschwindigkeit des Stiftes 21 in Richtung parallel zur Bewegung der ersten Koppelstange 18 nimmt ab, solange bis der Stift im Endbereich 31 des zweiten Abschnitts 32 sich nur noch horizontal bewegt und der Hebel 20 eine annähernd horizontale Stellung einnimmt. Am Ende dieses Bereiches (Resthubs) ist die Bewegung der ersten Koppelstange beendet und der Schalter befindet sich in der Ausschaltstellung.Once the pin 21 is in the curved second section 32 reaches the link guide 23, the lever 20 pivots clockwise and the pin 21 moves radially away from the first coupling rod 18. The speed of the pin 21 in the direction parallel to the movement of the first coupling rod 18 decreases until the pin in End region 31 of the second section 32 is only horizontal moves and the lever 20 is approximately horizontal Takes position. At the end of this area (rest hubs) is the movement of the first coupling rod ends and the switch is in the off position.

Der Stift 21 betätigt während dieser Bewegung, die zu Beginn mit derselben Geschwindigkeit wie die der ersten Koppelstange 18 stattfindet und später verzögert wird, eine Traverse 26, die zu diesem Zweck einen Schlitz 27 aufweist, in dem der Stift 21 eine horizontale Bewegung relativ zur Traverse ausführen kann. Mit der Traverse 26 ist die zweite Koppelstange 28 bzw. ein Paar von zwei Koppelstangen verbunden, an deren unterem Ende die Feldelektrode 15 befestigt ist.The pin 21 actuates during this movement, which at the beginning at the same speed as that of the first coupling rod 18 takes place and is later decelerated, a traverse 26, which has for this purpose a slot 27 in which the Pin 21 perform a horizontal movement relative to the crossbar can. With the traverse 26 is the second coupling rod 28 or a pair of two coupling rods connected to their the lower end of the field electrode 15 is attached.

Das beschriebene Getriebe bewirkt, daß sich während der Ausschaltbewegung die Feldelektrode 15 zunächst mit gleicher Geschwindigkeit wie die Kontaktstücke zur Trennstrecke hin bzw. zum Lichtbogenraum 33 bewegt. Der Weg, den die Feldelektrode 15 zurücklegt, ist jedoch nicht so groß wie der Weg der Kontaktstücke und die Feldelektrode 15 bleibt, wie in Figur 1, rechter Halbschnitt gezeigt, in einer Stellung stehen, in der sie gemeinsam mit der Abschirmelektrode 14 und dem feststehenden Lichtbogenkontaktstück 1 eine optimale Feldkontur erzeugt. Diese Elektrodenstellung wird vor Hubende erreicht, so daß die optimale Abschirmung während des Resthubs, d. h. während der Lichtbogenlöschung erreicht ist.The transmission described causes that during the opening movement the field electrode 15 initially at the same speed like the contact pieces towards the isolating section or moved to the arc room 33. The path that the field electrode 15 traveled, but is not as large as the path of the contact pieces and the field electrode 15 remains, as in FIG. 1, right half section shown, in a position in which them together with the shielding electrode 14 and the fixed one Arc contact piece 1 generates an optimal field contour. This electrode position is reached before the stroke ends, see above that the optimal shielding during the remaining stroke, d. H. while the arc extinguishing is reached.

Die Notwendigkeit eines Getriebes der beschriebenen Art ergibt sich daraus, daß die Feldelektrode im Einschaltzustand genügend weit ausweichen muß (vgl. Figur 1, linker Halbschnitt), um der Isolierdüse 5 genügend Platz zu lassen, daß sie jedoch bereits bei Löschbeginn die optimale Stellung eingenommen haben muß, um die Lichtbogenlöschung zu gewährleisten.The need for a transmission of the type described results from the fact that the field electrode is in the on state must dodge sufficiently far (see Figure 1, left half-section), to leave enough space for the insulating nozzle 5 that however, they already assumed the optimal position at the start of the deletion must have to ensure the arc extinguishing.

Beim Einschaltvorgang werden die beschriebenen Phasen in umgekehrter Reihenfolge durchlaufen. Die Feldelektrode bewegt sich zunächst langsam und zum Ende der Einschaltbewegung hin schneller. Sie wird dabei "weich" beschleunigt, sodaß Kraftspitzen vermieden werden.When switching on, the phases described are reversed Go through order. The field electrode moves first slowly and towards the end of the switch-on movement more quickly. It is accelerated "softly" so that force peaks be avoided.

Durch das beschriebene Getriebe ist gewährleistet, daß die Feldelektrode durch eine Zwangssteuerung in jeder Phase der Schaltbewegung die für die dielektrischen Bedingungen günstigste Position einnimmt.The transmission described ensures that the Field electrode by positive control in every phase of the Switching movement the most favorable for the dielectric conditions Takes position.

Der beschriebene Schalter ist auch bezüglich der Ausgestaltung des Getriebes symmetrisch aufgebaut mit gleichen Teilen in beiden dargestellten Hälften der Figur 1. Dies dient der Funktionssicherheit und der Symmetrie der Kraftwirkungen (gegen Verkanten und Querkräfte); grundsätzlich ist jedoch auch eine nur einseitige Ausbildung des Getriebes möglich.The switch described is also in terms of design of the gearbox constructed symmetrically with the same parts in both halves of Figure 1. This serves the Functional reliability and the symmetry of the force effects (against canting and lateral forces); is fundamental, however only one-sided design of the gearbox possible.

Unter Bezugnahme auf die Figuren 1, 2A und 2B zeigt Fig. 3 ausschnittsweise den feststehenden Dauerstromkontakt 2 eines Hochspannungs-Leistungsschalters, in den von links das axial antreibbare, hier nicht dargestellte Dauerstromkontaktstück 4 mit der daran befestigten Isolierdüse 5 und dem ersten, axial antreibbaren und hier ebenfalls nicht dargestellten Lichtbogenkontaktstücks 3. Dabei zeigt die Figur die Einschaltstellung des antreibbaren Dauerstromkontaktstückes mit der Isolierdüse 5. In dieser Einschaltstellung umgibt die Isolierdüse 5 das entgegengesetzt angetriebene zweite Lichtbogenkontaktstück 25 auf seiner ganzen Länge. Am Ende 17 der Isolierdüse 5 sind symmetrisch zur Längsachse des Leistungsschalters zwei erste Koppelstangen 18 befestigt, die einerseits über zwei mit einem Stift 21 versehene Hebel 20, die Kulissenführung 23, die Traverse 26 und die zweiten Koppelstangen 28 die Feldelektrode 15 antreiben und von denen andererseits die untere zum Antrieb des Lichtbogenkontaktstückes 25 mittels eines Umlenkgetriebes zusätzlich einen Zapfen 35 aufweist, der quer zur Schubrichtung der mit einem U-förmigen Querschnitt versehenen unteren ersten Koppelstange 18 angeordnet ist. Die untere erste Koppelstange 18 kann auch einen L- oder T-förmigen Querschnitt aufweisen, wobei jeweils ein Querschnittsteil eine Gleitfläche zur Führung der Koppelstange 18 längs einer an der Platine 56 ausgeformten Lagerwange 57 bildet.Referring to Figures 1, 2A and 2B, Figure 3 shows sections of the fixed continuous current contact 2 one High-voltage circuit breaker, in the left from the axial drivable continuous current contact piece 4, not shown here. 4 with the insulating nozzle 5 attached to it and the first, axially drivable and also not shown arcing contact piece 3. The figure shows the switch-on position of the drivable continuous current contact piece with the insulating nozzle 5. In this switch-on position, the insulating nozzle surrounds 5 the oppositely driven second arcing contact piece 25 along its entire length. At the end 17 of the isolation nozzle 5 are symmetrical to the longitudinal axis of the circuit breaker two first coupling rods 18 attached, the one hand over two levers 20 provided with a pin 21, the link guide 23, the cross member 26 and the second coupling rods 28 die Drive field electrode 15 and of which, on the other hand, the lower one to drive the arcing contact piece 25 by means of a Deflection gear additionally has a pin 35 which transverse to the direction of thrust with a U-shaped cross section provided lower first coupling rod 18 is arranged. The lower first coupling rod 18 can also be L-shaped or T-shaped Have cross-section, each with a cross-sectional part a sliding surface for guiding the coupling rod 18 forms along a bearing cheek 57 formed on the circuit board 56.

Die Platine 56 ist an der Kontaktbrücke 38 eines mit dem feststehenden Dauerstromkontaktstückes 2 verbundenen Gleitkontaktes 34 befestigt und ist gemäß den Figuren 4 und 5 mit zwei in Längsrichtung symmetrisch zur Mittellinie ML angeordneten Lagerwangen 57 versehen, die zur Führung der oberen, zum Antrieb der Feldelektrode 15 vorgesehenen ersten Koppelstange 18 und zur Führung der unteren, zum Antrieb sowohl der Feldelektrode 15 als auch des zweiten Lichtbogenkontaktstückes 25 vorgesehenen ersten Koppelstange 18 dienen. In die Platine 56 sind weiterhin zwei Lagerwangen 58 zur Führung eines in Figur 3 dargestellten flachen Kopfes 43 eingearbeitet, der sich am rückwärtigen Ende des zweiten Lichtbogenkontaktstückes 25 befindet. Weiterhin sind in die Platine 56 die Kulissenführungen 23 für die Stifte 21 des Getriebes für die Feldelektrode 15 eingearbeitet. Die Lagerwangen 58 und die Kulissenführungen 23 sind in Längsrichtung der Platine 56 hintereinander angeordnet, wobei die Lagerwangen 58 dem Lichtbogenraum 33 (Fig. 1 des Hauptpatentes) zugewandt sind.The board 56 is one on the contact bridge 38 with the fixed continuous current contact piece 2 connected sliding contact 34 attached and according to Figures 4 and 5 with two arranged in the longitudinal direction symmetrically to the center line ML Bearing cheeks 57 provided to guide the upper, provided for driving the field electrode 15 first coupling rod 18 and to guide the lower one, to drive both the Field electrode 15 and the second arcing contact piece 25 provided the first coupling rod 18. In the Board 56 are also two bearing cheeks 58 for guiding one incorporated flat head 43 shown in Figure 3, which is at the rear end of the second arcing contact piece 25 is located. Furthermore, the slide guides are in the board 56 23 for the pins 21 of the gearbox for the Field electrode 15 incorporated. The bearing cheeks 58 and the Link guides 23 are in the longitudinal direction of the board 56 arranged one behind the other, the bearing cheeks 58 the Arc room 33 (Fig. 1 of the main patent) are facing.

Gemäß Figur 6, die einen Querschnitt längs der Schnittlinie F-G in Figur 3 zeigt, sind zwei Platinen 56 spiegelsymmetrisch zur Längsachse des Hochspannungs-Leistungsschalters angeordnet und von einer Traverse 26 umschlossen; diese Traverse verbindet einerseits die beiden zweiten Koppelstangen 28 miteinander; andererseits sind in den beiden Seitenwänden 59 und 60 vertikale Schlitze 27 für den Eingriff der Stifte 21 vorgesehen. - Die Traverse 26 umschließt auch die beiden ersten Koppelstangen 18, wobei diese durch zwei Distanzstücke 61 von den zweiten Koppelstangen 28 auf Abstand gehalten werden.According to Figure 6, which is a cross section along the section line F-G in Figure 3, two boards 56 are mirror symmetrical to the longitudinal axis of the high-voltage circuit breaker arranged and enclosed by a traverse 26; this traverse connects the two second coupling rods 28 with each other; on the other hand, are in the two side walls 59 and 60 vertical slots 27 for the engagement of the pins 21 provided. - The traverse 26 also encloses the two first coupling rods 18, these by two spacers 61 are kept at a distance from the second coupling rods 28.

Gemäß Figur 3 ist das entgegengesetzt zum ersten Lichtbogenkontaktstück 3 antreibbare zweite Lichtbogenkontaktstück 25 an seinem der Lichtbogenschaltstrecke 33 (Fig. 1 des Hauptpatentes) abgewandten Ende mit dem flachen Kopf 43 versehen, der in den Lagerwangen 58 der Platinen 56 geführt ist. - Der flache Kopf 43 ist mit einem vertikal zur ersten Koppelstange 18 verlaufenden Langloch 42 versehen.According to FIG. 3, this is opposite to the first arcing contact piece 3 drivable second arcing contact piece 25 on the arc switching path 33 (Fig. 1 of the main patent) end facing away from the flat head 43, which is guided in the bearing cheeks 58 of the boards 56. - The flat head 43 is vertical to the first coupling rod 18 extending slot 42 provided.

Gemäß Figur 3 und der die Schnittlinie A-E berücksichtigenden Querschnittsdarstellung in Figur 7 ist zum Antrieb des zweiten Lichtbogenkontaktstückes 25 in den Platinen 56 auf einer vertikal zur Zeichenebene verlaufenden Drehachse 55 ein zweiarmiger Steuerhebel 40 gelagert, der an seinem einen Ende gabelförmig gestaltet und an seinem anderen Ende mit einem Zapfen 41 versehen ist. Der Zapfen 41 greift in das Langloch 42 am Kopf 43 ein. Das gabelseitige Ende weist zwei Zinken 46 und 47 auf, die eine maulartige Öffnung 48 umschließen, in die der Zapfen 35 der unteren ersten Koppelstange 18 eingreifen kann. Die beiden Zinken 46 und 47 sind außen mit einer Anlagefläche 49 bzw. 50 versehen, mit denen der Steuerhebel 40 - in Abhängigkeit von seiner Stellung - zur Anlage an den eine Gleitbahn bildenden Boden 51 des U-förmigen Querschnittsprofils der unteren ersten Koppelstange 18 kommt. Durch Anschläge 53 und 54 an den Platinen 56 ist dabei gewährleistet, daß der Steuerhebel 40 in der jeweiligen Anlageposition verharrt. Die beiden Anlagepositionen stellen Endpositionen dar, zwischen denen der Steuerhebel 40 unter der Wirkung des Zapfens 35 bewegt wird. Damit das gabelartige Ende hierbei eine Drehbewegung um die Drehachse 55 ausführen kann, ist die untere erste Koppelstange 18 im Boden 51 des U-förmigen Querschnittes mit einem länglichen Schlitz 36 versehen. Ein gleichartiger Schlitz ist gegebenenfalls in der unteren zweiten Koppelstange 28 vorgesehen.According to Figure 3 and the line A-E taking into account Cross-sectional view in Figure 7 is for driving the second Arcing contact piece 25 in the boards 56 on one a two-armed axis of rotation 55 running vertically to the plane of the drawing Control lever 40 mounted, forked at one end designed and at its other end with a peg 41 is provided. The pin 41 engages in the elongated hole 42 on the head 43. The fork end has two prongs 46 and 47, which enclose a mouth-like opening 48, in which engage the pin 35 of the lower first coupling rod 18 can. The two tines 46 and 47 are on the outside with one Provide contact surface 49 or 50 with which the control lever 40 - depending on his position - to invest in the a bottom 51 of the U-shaped cross-sectional profile forming a slideway the lower first coupling rod 18 comes. By stops 53 and 54 on the boards 56 it is ensured that the control lever 40 in the respective contact position persists. The two investment positions represent end positions between which the control lever 40 under the Effect of the pin 35 is moved. So that the fork-like end perform a rotary movement about the axis of rotation 55 can, the lower first coupling rod 18 is in the bottom 51 of the U-shaped Cross section provided with an elongated slot 36. A similar slot may be in the lower one second coupling rod 28 is provided.

Bei einer Ausschaltbewegung durchläuft die erste Koppelstange 18 und damit der Zapfen 35 ausgehend von der in Figur 3 dargestellten Position kontinuierlich verschiedene Zwischenpositionen, von denen die Figuren 8 und 9 diejenigen darstellen, die der Kopf 43 und damit das zugehörige entgegengesetzt angetriebene Lichtbogenkontaktstück 25 kurz vor und kurz nach Erreichen des Geschwindigkeitsmaximums einnehmen, und Figur 10 die andere Endstellung des Steuerhebels 40. Im Anschluß an die Position gemäß Figur 10 kann sich die erste Koppelstange 18 noch weiter nach links bewegen, ohne daß der Steuerhebel 40 seine Position verändert. - Im oberen Teil der Figuren 8 bis 10 sind die Koppelstangen 18 und 28, der Kopf 43 und der Hebel 20 jeweils in der einen Endposition dargestellt.When switching off, the first coupling rod passes 18 and thus the pin 35 starting from that shown in Figure 3 Position continuously different intermediate positions, of which Figures 8 and 9 represent those which the head 43 and thus the associated oppositely driven Arcing contact piece 25 shortly before and shortly after Take the maximum speed, and figure 10 the other end position of the control lever 40. Following the position according to FIG. 10 can be the first coupling rod 18 move further to the left without the control lever 40 changed his position. - In the upper part of Figures 8 to 10 are the coupling rods 18 and 28, the head 43 and the Lever 20 shown in one end position.

Der Hebel 20 sowie die Kulissenführung 23 zum Antrieb der Feldelektrode 15 und der Steuerhebel 40 zum Antrieb des zweiten Lichtbogenkontaktstückes 25 lassen sich so dimensionieren, daß die Feldelektrode nach etwa zwei Dritteln des Schalthubes des Dauerstromkontaktstückes 4 und des ersten Lichtbogenkontaktstückes 3 ihre Endposition erreicht hat und daß das zweite Lichtbogenkontaktstück 25 nur während eines mittleren Abschnittes des Schalthubes angetrieben wird und seine Endposition einnimmt, bevor die Feldelektrode 15 ihre Endposition erreicht hat.The lever 20 and the link guide 23 for driving the Field electrode 15 and the control lever 40 for driving the second Arcing contact piece 25 can be dimensioned so that the field electrode after about two thirds of the switching stroke the continuous current contact piece 4 and the first arcing contact piece 3 has reached its end position and that second arcing contact piece 25 only during a middle one Section of the switching stroke is driven and its end position occupies before the field electrode 15 its end position has reached.

Claims (8)

  1. High-voltage power switch with a first, axially driveable and a second, stationary continuous-current contact (2, 4) and with a first and a second arcing contact (1, 3), coaxially surrounded by the continuous-current contacts, with, in addition, a nozzle of insulating material (5) which is firmly joined to both the first driveable continuous-current contact (4) and the first arcing contact,
    and with an axially displaceable field electrode (15) surrounding the second arcing contact (1), characterized in that
    the field electrode (15) is displaceable by means of a gear which consists of
    a first coupling rod (18), coupled to the driveable continuous-current contact via the nozzle of insulating material and running in the direction of the longitudinal axis of the switch,
    a second coupling rod (28), running in parallel to it and coupled to the field electrode (15), and
    a lever (20), pivotally attached to the first coupling rod,
    there being attached to the pivoting part of the lever (20) a pin (21), passing through its pivoting plane, to which is coupled the second coupling rod (28) and which engages in a link guide (23) which is firmly joined to the second continuous-current contact (14),
    the link guide being worked into a plate (56) which is coupled to the second coupling rod (28) and being fashioned in such a way that a first section (29) runs approximately parallel to the longitudinal direction of the first coupling rod (18) and a second, curved section (21) permits a deflection of the pin (21) perpendicular to the longitudinal axis of the switch.
  2. High-voltage power switch according to Claim 1, characterized in that
    the curved, second section (32) of the link guide comprises a first end region (30), adjacent to the first section (29) and running in the direction of the first section (29), and a second end region (31) running approximately perpendicularly to the first section (29).
  3. High-voltage power switch according to Claim 2, characterized in that
    the second section (21) of the link guide (23) faces towards the first arcing contact (3).
  4. High-voltage power switch according to any one of Claims 1 to 3, characterized in that the second coupling rod is joined to a cross-member (26) which is displaceably guided in the direction of the longitudinal axis of the switch and comprises a slot (27), running perpendicularly to the longitudinal axis of the switch, in which there engages the pin (21) attached to the lever (20).
  5. High-voltage power switch according to any one of Claims 1 to 4, characterized in that the second arcing contact (25) is guided in a sliding contact (34) and can be driven in opposition to the first arcing contact (3), for the purpose of driving the second arcing contact (25), the first coupling rod (18) is provided with a stud (35), disposed transversely relative to the translational direction and driving a deflection gear, the deflection gear comprising a two-armed control lever (40), having two stable end positions, one of the two ends of which is fashioned in the form of a fork (46, 47) for the purpose of guiding the stud in the manner of a link and the other is articulated to the second arcing contact (25) via a pendulum element (41, 42), and the stationary parts (23) of the gear for the field electrode (15) and of the deflection gear (40) for the second arcing contact (25) are disposed serially on a common plate (56) in the axial direction of the power switch.
  6. High-voltage power switch according to Claim 5, characterized in that
    the pendulum element consists of a further stud (41) on the other end of the control lever (40) and a longitudinal hole (42), on the second arcing contact (25), in which the stud (41) engages.
  7. High-voltage power switch according to either of Claims 5 or 6, characterized in that
    the first coupling rod (18) is guided on a bearing cheek (58) of the plate (56),
    the pivot (55) of the two-armed control lever (40) is located between the first coupling rod (18) and the axis of the second arcing contact (25) and is firmly joined to the common plate (56),
    in its stable end positions, the two-armed control lever (40) runs obliquely relative to the first coupling rod (18) and to the axis of the second arcing contact (25), the fork-type end of the control lever (40) is provided with an oblong, jaw-type recess (48) between the two prongs (46, 47)
    and the further stud (41) is likewise disposed transversely relative to the translational direction of the first coupling rod (18).
  8. High-voltage power switch according to any one of Claims 5 to 7, characterized in that
    the first coupling rod (18) comprises a slideway (52) which is provided with a recess (36) which releases the pivoting region of the fork-type end of the control lever (40),
    and the two prongs (46, 47) of the fork-type end of the control lever (40) are provided with exterior flat faces (49, 50) for the purpose of supporting the control lever (40) on the slideway (52) of the first coupling rod (18) in both end positions of the control lever (40).
EP98907851A 1997-01-17 1998-01-19 High-voltage power switch with an axially displaceable field electrode Expired - Lifetime EP0953199B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19702822 1997-01-17
DE1997102822 DE19702822C1 (en) 1997-01-17 1997-01-17 HV circuit breaker with field electrode
DE19727850A DE19727850C1 (en) 1997-06-26 1997-06-26 HV circuit breaker with two opposed-drive arc contact pieces
DE19727850 1997-06-26
DE19741660A DE19741660A1 (en) 1997-01-17 1997-09-16 HV circuit breaker with field electrode
DE19741660 1997-09-16
PCT/DE1998/000190 WO1998032142A1 (en) 1997-01-17 1998-01-19 High-voltage power switch with an axially displaceable field electrode

Publications (2)

Publication Number Publication Date
EP0953199A1 EP0953199A1 (en) 1999-11-03
EP0953199B1 true EP0953199B1 (en) 2001-12-05

Family

ID=27217064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98907851A Expired - Lifetime EP0953199B1 (en) 1997-01-17 1998-01-19 High-voltage power switch with an axially displaceable field electrode

Country Status (5)

Country Link
US (1) US6177643B1 (en)
EP (1) EP0953199B1 (en)
BR (1) BR9807492B1 (en)
DE (1) DE59802323D1 (en)
WO (1) WO1998032142A1 (en)

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DE19727850C1 (en) * 1997-06-26 1998-09-17 Siemens Ag HV circuit breaker with two opposed-drive arc contact pieces
DE29901205U1 (en) 1999-01-15 1999-05-12 Siemens Ag High-voltage circuit breakers, in particular compressed gas circuit breakers
DE19928080C5 (en) * 1999-06-11 2006-11-16 Siemens Ag High voltage circuit breaker with a discharge channel
EP1930930B1 (en) * 2006-12-06 2013-08-28 ABB Technology AG Transmission for a high-voltage circuit breaker
EP2369608B1 (en) 2010-03-26 2012-08-29 ABB Research Ltd. High-voltage circuit breaker
WO2012063251A1 (en) * 2010-11-09 2012-05-18 Crompton Greaves Limited Double motion circuit breaker
FR2982069B1 (en) * 2011-10-27 2013-12-20 Alstom Technology Ltd CUTTING CHAMBER WITH A TUBE LIMITING THE IMPACT OF PARTICLE GENERATION AND ELECTRIC CUTTING EQUIPMENT EQUIPPED WITH SUCH CUTTING CHAMBER
DE102012211376A1 (en) * 2012-06-29 2014-04-10 Siemens Aktiengesellschaft switching arrangement
DE102013200914A1 (en) * 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Switching method and switching device
DE102013200918A1 (en) 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Switchgear arrangement
KR101759452B1 (en) 2013-08-29 2017-07-31 가부시키가이샤 히타치세이사쿠쇼 Gas circuit breaker
EP3144946A1 (en) * 2015-09-18 2017-03-22 ABB Schweiz AG Low voltage electrical contact system with enhanced arc blow effect
DE102016214221B4 (en) * 2016-08-02 2019-11-21 Siemens Aktiengesellschaft Gear housing of a circuit breaker
DE102019214432B4 (en) * 2019-09-23 2024-02-08 Siemens Energy Global GmbH & Co. KG Assembly for a high-voltage circuit breaker and corresponding high-voltage circuit breaker
EP3985702A1 (en) 2020-10-19 2022-04-20 General Electric Technology GmbH Circuit breaker comprising an improved linkage mechanism

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DE2140284A1 (en) 1971-08-06 1973-02-15 Siemens Ag ELECTRIC PRESSURE GAS SWITCH
CH644969A5 (en) 1979-09-25 1984-08-31 Sprecher & Schuh Ag Gas pressure switch.
DE4217232A1 (en) 1992-05-20 1993-11-25 Siemens Ag Electrical high-voltage power switch - has compression system for quenching gas with cylinder floors made of material with good electrical conductivity
ATE160466T1 (en) * 1994-06-20 1997-12-15 Gec Alsthom T & D Ag COMPRESSED GAS SWITCH
DE4427163A1 (en) 1994-08-01 1996-02-08 Abb Management Ag Gas pressure switch
FR2745947B1 (en) * 1996-03-11 1998-04-10 Gec Alsthom T & D Sa REDUCED SELF-PRESSURE CIRCUIT BREAKER
FR2769403B1 (en) * 1997-10-02 1999-11-12 Gec Alsthom T & D Sa COMPRESSED GAS SWITCH WITH RACK GEAR
FR2774503B1 (en) * 1998-02-02 2000-04-07 Gec Alsthom T & D Sa MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER HAVING A TRANSMISSION BELT CLOSED AROUND TWO PINIONS

Also Published As

Publication number Publication date
US6177643B1 (en) 2001-01-23
WO1998032142A1 (en) 1998-07-23
EP0953199A1 (en) 1999-11-03
BR9807492A (en) 2000-03-21
BR9807492B1 (en) 2011-06-28
DE59802323D1 (en) 2002-01-17

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