EP0820083B1 - Disjoncteur - Google Patents

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Publication number
EP0820083B1
EP0820083B1 EP97810430A EP97810430A EP0820083B1 EP 0820083 B1 EP0820083 B1 EP 0820083B1 EP 97810430 A EP97810430 A EP 97810430A EP 97810430 A EP97810430 A EP 97810430A EP 0820083 B1 EP0820083 B1 EP 0820083B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
return stop
drive
catch
power transmission
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
EP97810430A
Other languages
German (de)
English (en)
Other versions
EP0820083A2 (fr
EP0820083A3 (fr
Inventor
Lorenz Dr. Müller
Kurt Dr. Kaltenegger
Martin Dr. Seeger
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz 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
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP0820083A2 publication Critical patent/EP0820083A2/fr
Publication of EP0820083A3 publication Critical patent/EP0820083A3/fr
Application granted granted Critical
Publication of EP0820083B1 publication Critical patent/EP0820083B1/fr
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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H2001/508—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position with mechanical means to prevent return/reverse movement of movable contact once opening or closing cycle has started
    • 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

Definitions

  • the invention is based on one Circuit breaker according to the preamble of claim 1 or claim 8.
  • the backstop can be activated regardless of the installation position of the the respective circuit breaker. If the Burning contacts of circuit breakers using Racks are moved, so they can be anyway existing racks at the same time advantageous for the Use installation of the backstop.
  • 1a shows schematically a first one Embodiment of a backstop 21 shown.
  • On Drive 1a actuates one by means of a drive element 1 straight, axially extending rack 2.
  • An arrow 3 indicates Direction in which the rack 2 at a Switching off moves.
  • the upper part of the rack 2 is with a not shown, movable erosion contact of the Circuit breaker connected.
  • the mean depth of engagement of the Rack 2 is shown by a straight dash-dotted line 4 shown.
  • the rack 2 is a schematic indicated guide 5 guided axially.
  • one rigid axis of rotation 6 provided in one fixed distance A to the dash-dotted line 4 .
  • a pawl 7 rotates.
  • the pawl 7 points here for example, a rectangular cross section. That the Rack 2 facing end of the pawl 7 engages directly after the beginning of the movement of the rack 2 in the teeth of the Rack 2 a.
  • At the rack 2 facing away from the end Pawl 7 is attached to one end of a spring 8.
  • the other The end of the spring 8 is on a fixed support 9 attached.
  • the spring 8 holds the pawl 7 at rest in the in Fig.1a shown position.
  • the idle state of the jack 7 provides an undercut 7a on the rack 2 that the Rack 2 facing end of the pawl 7 in its Mobility is not restricted.
  • the spring 8 is biased. Once the jack 7 over the top of the first tooth of the rack 2 slides away, so snaps the pawl 7, pulled by the spring 8, clockwise continues and then meets the second rising edge 10 of the next tooth.
  • Fig.1b the position is shown which the Pawl 7 occupies if during the above described movement the direction of movement of the rack 2 reverses as an arrow 13 indicates. In this case it is enough the available power of the drive because of additional Opposing forces do not result in the opening movement to finish in the direction of arrow 3.
  • the end of Jack 7 becomes one between the rising edge 10 next tooth, the falling edge 12 of an already swept tooth and the axis of rotation 6 tilted so that the movement of the rack 2 in the direction of arrow 13 is blocked.
  • the movement of the erosion contact in Switch-off direction is then interrupted, one opposite movement of the erosion contact back in Switch-on direction is suppressed.
  • the pawl 7 is released automatically from their tilt, and the switch-off movement of the erosion contact will surely continue.
  • this jammed pawl 7 by means of an additional an arrow 14 indicated to release force. That power is, for example, by means of a hydraulic or pneumatic piston-cylinder arrangement or one targeted actuable electromagnet applied.
  • the additional Force causes the pawl 7 to rotate Counterclockwise around its axis of rotation 6, like an arrow 15 indicates that the rotation continues until the pawl 7 is no longer in engagement with the teeth of the rack 2.
  • the pawl 7 is then held against the force of the spring 8 and the rack 2 can move in the direction of Continue arrow 13.
  • circuit breakers can do this mechanical Loosening the pawl 7 can be used advantageously.
  • FIG 3 shows an embodiment of the backstop 21 in which the rack 2 is formed as a segment of a circle is.
  • the average depth of engagement of the rack 2 is here by a circular dash-dotted line 4 shown.
  • the fixed distance A between the dash-dotted line 4 and the axis of rotation 6 is also here appropriately set.
  • the operation of the jack 7 is at this embodiment variant exactly the same as above already described.
  • the erosion contact or the erosion contacts of the Circuit breakers can be made using the most diverse Drive rods are set in motion, so too different forms of each to the particular Rack 2 to be adapted to drive linkage can. If care is taken that the shape of the jack 7, the shape of the rack 2, the shape of the flanks of the teeth the rack 2, the length of the pawl 7 and the distance A are coordinated, so you get a versatile applicable to the respective construction conditions customizable backstop. This backstop is also regardless of the position of the circuit breaker used.
  • FIG 4 shows a partial section through a centrally symmetrically constructed quenching chamber 16 of a circuit breaker, as described, for example, in the patent specification EP 0 313 813 B1.
  • This quenching chamber 16 has a quenching chamber housing, not shown, which is filled with SF 6 gas under pressure.
  • This quenching chamber 16 also has a central axis 17.
  • the quenching chamber 16 is shown on the left of this central axis 17 in the switched-off state and on the right in the switched-on state.
  • the extinguishing chamber 16 also has two moveable erosion contacts 18, 19, the first 18 of these erosion contacts being tubular and the second 19 being a solid switching pin. In the switched-on state, the erosion contact 19 is partially enclosed by the erosion contact 18.
  • the erosion contact 18 is rigidly connected to an insulating nozzle 20 and is moved together with the latter by a drive (not shown), a first backstop 21, which is interposed between the drive and the insulating nozzle 20 or erosion contact 18 and is shown schematically in the on and off position, prevents the erosion contact 18 can run back in the switch-on direction during the switch-off movement.
  • a dashed line of action 22 indicates the mechanical connection between the rack 2 of the backstop 21 and the tubular erosion contact 18.
  • the drive transmits its energy to the rack 2 by means of the drive element 1.
  • Isolation nozzle 20 On the opposite side of the backstop 21 Isolation nozzle 20 are two diametrically opposed to each other opposing racks 23 with the insulating nozzle 20 firmly connected.
  • the insulating nozzle 20 slides in a fixed one Guide tube 24 in which two into the racks 23rd engaging one by one in the guide tube 24 stationary rotating axis rotating gears 25 are arranged.
  • Gears 25 each in one in the surface of the Burning contact 19 incorporated or recessed Rack.
  • the erosion contact 19 is shown schematically in and Second backstop 26 shown in the off position directly connected, which prevents the erosion contact 19 during the switch-off movement in the switch-on direction can run back.
  • a dashed line of action 27 indicates the direct mechanical connection between the rack 2a of the second backstop 26 and the massive, as Switch pin trained erosion contact 19.
  • the Backstop 26 is not in this Power transmission system integrated, which of the Insulating nozzle 20 via the racks 23 and the gears 25 acts on the erosion contact 19.
  • the power transmission system can namely the insulating nozzle 20th act resilient and the movement of the erosion contact 19th delay, so that one directly on the erosion contact 19 acting regardless of the backstop 21 working, backstop 26 is quite useful. It is but also possible that only one of the two backstops 21 or 26 is installed.
  • a backstop installed in a circuit breaker with only one moving erosion contact will be described in more detail below. It is assumed that a circuit breaker has a piston-cylinder blowing device, in which insulating gas, preferably SF 6 gas, is compressed in a known manner for blowing the switch-off arc. This compressed insulating gas can only escape from the piston-cylinder blowing device and blow the arc if the pressure in the arc zone is lower than the pressure in the piston-cylinder blowing device.
  • insulating gas preferably SF 6 gas
  • This backstop is very versatile, especially in switch technology can with their help Less powerful and therefore cheaper drives be used without the functional and Operational safety of the switch in question is reduced.

Landscapes

  • Circuit Breakers (AREA)

Claims (9)

  1. Disjoncteur doté d'un dispositif de soufflage à cylindre et piston et/ou d'un volume de réserve de gaz d'extinction chauffé par l'arc lumineux, avec deux pièces de contact qui peuvent être amenées à s'engager ou se désengager l'une par rapport à l'autre, avec un entraínement et avec des éléments de transmission de force, laquelle force exercée par l'entraínement agit sur une première des deux pièces de contact, la première pièce de contact coopérant avec au moins un verrouillage anti-retour (21, 26), caractérisé en ce que
    le verrouillage anti-retour (21, 26) ne se verrouille qu'en cas d'interruption du déplacement de débranchement de la première pièce de contact, et
    le verrouillage anti-retour (21, 26) n'est pas activé lors d'une opération de branchement partant de la position de débranchement du disjoncteur.
  2. Disjoncteur selon la revendication 1, caractérisé en ce que
    au moins un composant du verrouillage anti-retour (21, 26) peut être utilisé comme élément de transmission de force ou
    en ce que le verrouillage anti-retour (21, 26) est exempt d'éléments de transmission de force.
  3. Disjoncteur selon l'une des revendications 1 ou 2, caractérisé en ce que
    le verrouillage anti-retour (21, 26) présente une crémaillère (2, 2a) et un cliquet (7) qui s'engage dans cette dernière et qui bloque éventuellement son déplacement, et
    en ce que le cliquet (7) est sollicité par un ressort (8) et est configuré de manière à pouvoir tourner autour d'un axe de rotation (6).
  4. Disjoncteur selon la revendication 3, caractérisé en ce que la crémaillère (2) présente une forme adaptée au déroulement du déplacement des éléments de transmission de force.
  5. Disjoncteur selon l'une des revendications 3 ou 4, caractérisé en ce que la forme de l'extrémité du cliquet (7) qui s'engage dans la crémaillère (2) est adaptée à la forme des flans (10, 12) des dents.
  6. Disjoncteur selon l'une des revendications 3 à 5, caractérisé en ce que la crémaillère (2) est dotée de parties libres (7a, 11) dans les zones où un engagement du cliquet (7) n'est pas souhaité.
  7. Disjoncteur selon l'une des revendications 3 à 6, caractérisé en ce que le cliquet (7) peut être amené de manière contrôlée hors engagement au moyen d'une force supplémentaire.
  8. Disjoncteur doté d'un dispositif de soufflage à cylindre et piston et/ou d'un volume de réserve d'un gaz d'extinction chauffé par l'arc lumineux, avec deux pièces de contact qui peuvent être amenées à s'engager ou se désengager l'une par rapport à l'autre, avec un entraínement et avec des éléments de transmission de force qui transfèrent la force de l'entraínement sur une première des deux pièces de contact, et avec un élément supplémentaire de transmission de force qui transmet la force en sens inverse de la première pièce de contact sur la deuxième pièce de contact, la première ou la deuxième pièce de contact coopérant avec un verrouillage anti-retour (21, 26), caractérisé en ce que
    le verrouillage anti-retour (21, 26) ne bloque la première ou la deuxième pièce de contact qu'en cas d'interruption du déplacement de débranchement, et
    en ce que le verrouillage anti-retour (21, 26) n'est pas activé lors d'une opération de branchement qui part de la position de débranchement du disjoncteur.
  9. Disjoncteur selon la revendication 8, caractérisé en ce que les deux pièces de contact coopèrent chacune avec un verrouillage anti-retour (21, 26).
EP97810430A 1996-07-15 1997-07-02 Disjoncteur Expired - Lifetime EP0820083B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19628408A DE19628408A1 (de) 1996-07-15 1996-07-15 Leistungsschalter
DE19628408 1996-07-15

Publications (3)

Publication Number Publication Date
EP0820083A2 EP0820083A2 (fr) 1998-01-21
EP0820083A3 EP0820083A3 (fr) 1999-01-20
EP0820083B1 true EP0820083B1 (fr) 2003-09-24

Family

ID=7799824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810430A Expired - Lifetime EP0820083B1 (fr) 1996-07-15 1997-07-02 Disjoncteur

Country Status (2)

Country Link
EP (1) EP0820083B1 (fr)
DE (2) DE19628408A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10317742B3 (de) * 2003-04-17 2004-07-15 Dürkopp Adler AG Stau-Abschnitt einer Hänge-Förderanlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459447A (en) * 1982-01-27 1984-07-10 Mitsubishi Denki Kabushiki Kaisha Self extinguishing type gas circuit breaker
FR2554632B1 (fr) * 1983-11-08 1986-09-05 Merlin Gerin Disjoncteur a autosoufflage a cliquet anti-retour debrayable
CH675175A5 (fr) * 1987-10-27 1990-08-31 Bbc Brown Boveri & Cie
DE4304544C2 (de) * 1993-02-10 1995-05-24 Siemens Ag Antriebseinrichtung für einen elektrischen Leistungsschalter
DE4327676C2 (de) * 1993-08-13 1998-07-02 Siemens Ag Antrieb für einen elektrischen Hochspannungs-Leistungsschalter
DE4427163A1 (de) * 1994-08-01 1996-02-08 Abb Management Ag Druckgasschalter

Also Published As

Publication number Publication date
EP0820083A2 (fr) 1998-01-21
DE59710772D1 (de) 2003-10-30
EP0820083A3 (fr) 1999-01-20
DE19628408A1 (de) 1998-01-22

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