EP0831503A1 - High-voltage circuit breaker with absorber - Google Patents

High-voltage circuit breaker with absorber Download PDF

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Publication number
EP0831503A1
EP0831503A1 EP97401963A EP97401963A EP0831503A1 EP 0831503 A1 EP0831503 A1 EP 0831503A1 EP 97401963 A EP97401963 A EP 97401963A EP 97401963 A EP97401963 A EP 97401963A EP 0831503 A1 EP0831503 A1 EP 0831503A1
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EP
European Patent Office
Prior art keywords
circuit breaker
piston
damping
chamber
cylinder
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.)
Granted
Application number
EP97401963A
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German (de)
French (fr)
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EP0831503B1 (en
Inventor
Michel Perret
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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Publication of EP0831503A1 publication Critical patent/EP0831503A1/en
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper

Definitions

  • the present invention relates to a high circuit breaker voltage including an interrupting chamber filled with gas insulator in which a fixed assembly is arranged comprising contacts for the passage of permanent current and arcing contacts, and a movable assembly comprising contacts for the passage of permanent current, contacts arc and a blow cylinder associated with a nozzle blowing.
  • the mobile assembly is connected by a rod insulating to an order.
  • the mobile assembly has a relatively global mass important which, during an operation to open the circuit breaker, is driven at high speed on a race relatively small. High speed is imposed by the need to cut the arc quickly on the first pass by zero current and quickly move the contacts away for avoid any risk of re-priming.
  • An object of the present invention is to provide a circuit breaker in which the damping force becomes important from the start of depreciation, without reaching a value that can cause a rebound.
  • the present invention relates to a circuit breaker with high voltage including fixed contacts and a set mobile including mobile contacts, the mobile assembly being connected to a control via a rod operation, said circuit breaker comprising a damper for damping the movement of the rod at the end of a tripping operation, characterized in that said device comprises a piston driven by the rod and is moving in a cylinder in a direction such that the volume between piston and bottom of cylinder increases for the maneuver, causing a depression in said volume.
  • the damping piston clears, at the end of the maneuver, holes putting communications the volume in depression with the rest of the bedroom.
  • the damping piston compresses the volume placed in front of him during the triggering maneuver.
  • an insulating envelope 1 ceramic, filled with a gas with good properties dielectrics, such as sulfur hexafluoride, under a pressure of a few thousand hectopascals.
  • the tube 5 is fixed to a tubular piece 12, provided a terminal crown 13; the tubular part 12 is connected to an operating rod 14 made of insulating material, itself actuated by a command not shown.
  • the interrupting chamber is completed by a fixed piston 15, said blowing piston, fitted with valves unidirectional 15A; the blowing piston is extended by a cylindrical piece 16 closed by a bottom 17, crossed by the tubular part 12.
  • blowing piston 15, the cylindrical parts 5 and 6 and the crown 9 define a blowing volume V1.
  • the bottom 17 is extended by a cylinder 20 connected to a metal flange 21 closing one end of the casing 1 and carrying a second outlet not shown.
  • the cylinder 20 and the tube 12 define a volume annular V2, called damping volume, visible in the Fig.3, in which can slide a piston 26, said piston depreciation.
  • the damping piston rod is consisting of a cylindrical guide piece 27, sliding on the tubular part 12.
  • the part 27 is connected to a slide 28 by rods 29.
  • the piston 26 is fitted with 30 calibrated holes closable by a washer leaf 31, actuated by a spring not shown tending keep the holes closed.
  • a spring 33 based on a fixed stop 32 integral with the cylinder 20, tends to bring back the damping piston in abutment against the bottom 17.
  • the invention applies to high circuit breakers voltage of conventional type or of envelope type metallic to earth (so-called shielded).

Landscapes

  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Details Of Television Scanning (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Cable Accessories (AREA)
  • Ink Jet (AREA)

Abstract

The circuit breaker has a ceramic chamber filled with a dielectric gas and housing a fix module which includes a main contact (2) and an arc contact (3). A mobile module present in the same chamber includes a metal tube (5) continued with an arc contact (5A). A second tube (6), coaxial with the first one, is terminated with a permanent contact (7). The chamber bottom (17) is extended by a cylinder (20) coupled to a metal flange (21) closing the extremity of the chamber. An impact reducing piston (26), guided by a cylinder (27), slides inside the chamber.

Description

La présente invention concerne un disjoncteur à haute tension comprenant une chambre de coupure remplie de gaz isolant dans laquelle sont disposés un ensemble fixe comprenant des contacts pour le passage du courant permanent et des contacts d'arc, et un ensemble mobile comportant des contacts pour le passage du courant permanent, des contacts d'arc et un cylindre de soufflage associé à une buse de soufflage. L'ensemble mobile est relié par une tringle isolante à une commande.The present invention relates to a high circuit breaker voltage including an interrupting chamber filled with gas insulator in which a fixed assembly is arranged comprising contacts for the passage of permanent current and arcing contacts, and a movable assembly comprising contacts for the passage of permanent current, contacts arc and a blow cylinder associated with a nozzle blowing. The mobile assembly is connected by a rod insulating to an order.

L'ensemble mobile a une masse globale relativement importante qui, lors d'une opération d'ouverture du disjoncteur, est entraíné à grande vitesse sur une course relativement faible. La grande vitesse est imposée par la nécessité de couper l'arc rapidement au premier passage par zéro du courant et d'éloigner rapidement les contacts pour éviter tout risque de réamorçage.The mobile assembly has a relatively global mass important which, during an operation to open the circuit breaker, is driven at high speed on a race relatively small. High speed is imposed by the need to cut the arc quickly on the first pass by zero current and quickly move the contacts away for avoid any risk of re-priming.

Il est indispensable que le mouvement de l'ensemble mobile soit amorti en fin de course, sous peine de risques de dégradation du pôle ou d'usure prématurée.It is essential that the movement of the whole mobile is amortized at the end of the race, under pain of risk pole degradation or premature wear.

La plupart des dispositifs d'amortissements connus pour les disjoncteur comportent un cylindre rempli de gaz comprimé par un piston solidaire de l'ensemble mobile. Dans de tels systèmes, la force d'amortissement est faible au début de l'amortissement et devient très élevée en, fin d'amortissement, ce qui souvent provoque des rebondissements des contacts mobiles du disjoncteur.Most known amortization devices for circuit breakers have a cylinder filled with gas compressed by a piston integral with the mobile assembly. In such systems, the damping force is low at beginning of depreciation and becomes very high in, end depreciation, which often causes twists and turns moving contacts of the circuit breaker.

Un but de la présente invention est de réaliser un disjoncteur dans lequel la force d'amortissement devient importante dès le début de l'amortissement, sans atteindre une valeur pouvant provoquer un rebondissement.An object of the present invention is to provide a circuit breaker in which the damping force becomes important from the start of depreciation, without reaching a value that can cause a rebound.

La présente invention a pour objet un disjoncteur à haute tension comprenant des contacts fixes et un ensemble mobile comprenant des contacts mobiles, l'ensemble mobile étant relié à une commande par l'intermédiaire d'une tige de manoeuvre, ledit disjoncteur comprenant un amortisseur pour l'amortissement du mouvement de la tige à la fin d'une manoeuvre de déclenchement, caractérisé en ce que ledit dispositif comprend un piston entraíné par la tige et se déplaçant dans un cylindre dans un sens tel que le volume compris entre piston et le fond du cylindre croisse pendant la manoeuvre, engendrant une dépression dans ledit volume.The present invention relates to a circuit breaker with high voltage including fixed contacts and a set mobile including mobile contacts, the mobile assembly being connected to a control via a rod operation, said circuit breaker comprising a damper for damping the movement of the rod at the end of a tripping operation, characterized in that said device comprises a piston driven by the rod and is moving in a cylinder in a direction such that the volume between piston and bottom of cylinder increases for the maneuver, causing a depression in said volume.

Avantageusement, le piston d'amortissement dégage, en fin de manoeuvre, des trous mettant en communications le volume en dépression avec le reste de la chambre.Advantageously, the damping piston clears, at the end of the maneuver, holes putting communications the volume in depression with the rest of the bedroom.

Le piston d'amortissement comprime le volume placé devant lui lors de la manoeuvre de déclenchement.The damping piston compresses the volume placed in front of him during the triggering maneuver.

L'invention sera bien comprise à la lecture de la description donnée ci-après en référence au dessin ci-annexé dans lequel:

  • la figure 1 est une vue partielle en coupe axiale d'une chambre de coupure d'un disjoncteur représenté en position enclenchée,
  • la figure 2 est une vue similaire au début de la phase de déclenchement,
  • la figure 3 est une vue similaire en fin de déclenchement.
The invention will be clearly understood on reading the description given below with reference to the attached drawing in which:
  • FIG. 1 is a partial view in axial section of a breaking chamber of a circuit breaker shown in the engaged position,
  • FIG. 2 is a similar view at the start of the triggering phase,
  • Figure 3 is a similar view at the end of triggering.

Les figures ne représentent que la partie de la chambre de coupure dans laquelle sont visibles les portions concernées par l'invention. Pour une description complète d'un disjoncteur à haute tension, on pourra se référer à l'article "Appareillage électrique d'interruption à haute tension", par Eugène MAURY, in "LES TECHNIQUES DE L'INGENIEUR" D 655 a.The figures represent only the part of the breaking chamber in which the portions are visible concerned with the invention. For a full description of a high voltage circuit breaker, reference may be made to the article "Electrical switchgear at high tension ", by Eugène MAURY, in" LES TECHNIQUES DE THE ENGINEER "D 655 a.

Dans les figures, on distingue une enveloppe isolante 1, en céramique, remplie d'un gaz à bonnes propriétés diélectriques, tel que l'hexafluorure de soufre, sous un pression de quelques milliers d'hectopascals.In the figures, there is an insulating envelope 1, ceramic, filled with a gas with good properties dielectrics, such as sulfur hexafluoride, under a pressure of a few thousand hectopascals.

A la gauche des figures, on aperçoit un ensemble fixe comprenant un contact principal 2 et un contact d'arc 3, tous deux reliés à une première prise de courant non visible dans les figures.To the left of the figures, we see a fixed set comprising a main contact 2 and an arcing contact 3, both connected to a first socket not visible in the figures.

A la droite des figures, on apercoit un ensemble mobile comprenant:

  • un tube métallique 5 prolongé par un contact d'arc 5A coopérant avec le contact 3,
  • un tube métallique 6, coaxial au tube 5 et l'entourant, prolongé par un contact permanent 7 ccopérant avec le contact 2, et portant une buse de soufflage 8,
  • une couronne 9, solidarisant les tubes 5 et 6, munie de clapets unidirectionnels 10.
To the right of the figures, there is a mobile assembly comprising:
  • a metal tube 5 extended by an arcing contact 5A cooperating with the contact 3,
  • a metal tube 6, coaxial with the tube 5 and surrounding it, extended by a permanent contact 7 ccoperating with the contact 2, and carrying a blowing nozzle 8,
  • a crown 9, joining the tubes 5 and 6, provided with one-way valves 10.

Le tube 5 est fixé à une pièce tubulaire 12, munie d'une couronne terminale 13; la pièce tubulaire 12 est reliée à une tringle de manoeuvre 14 en matériau isolant, elle même actionnée par une commande non représentée.The tube 5 is fixed to a tubular piece 12, provided a terminal crown 13; the tubular part 12 is connected to an operating rod 14 made of insulating material, itself actuated by a command not shown.

La chambre de coupure est complété par un piston fixe 15, dit piston de soufflage, muni de clapets unidirectionnels 15A; le piston de soufflage est prolongé par une pièce cylindrique 16 fermée par un fond 17, traversé par la pièce tubulaire 12.The interrupting chamber is completed by a fixed piston 15, said blowing piston, fitted with valves unidirectional 15A; the blowing piston is extended by a cylindrical piece 16 closed by a bottom 17, crossed by the tubular part 12.

Le piston de soufflage 15, les pièces cylindriques 5 et 6 et la couronne 9 délimitent un volume de soufflage V1.The blowing piston 15, the cylindrical parts 5 and 6 and the crown 9 define a blowing volume V1.

Le fond 17 est prolongé par un cylindre 20 relié à un flasque métallique 21 fermant une extrémité de l'enveloppe 1 et portant une seconde prise de courant non représentée.The bottom 17 is extended by a cylinder 20 connected to a metal flange 21 closing one end of the casing 1 and carrying a second outlet not shown.

Le courant passe du contact 7 au flasque 21 par des bras métalliques 23 munis de contacts glissants 24, par exemple de type accordéon.Current flows from contact 7 to flange 21 through metal arms 23 provided with sliding contacts 24, by accordion type example.

Le cylindre 20 et le tube 12 définissent un volume annulaire V2, dit volume d'amortissement, visible dans la Fig.3, dans lequel peut coulisser un piston 26, dit piston d'amortissement. La tige du piston d'amortissement est constitué par une pièce cylindrique de guidage 27, coulissant sur la pièce tubulaire 12. La pièce 27 est reliée à un coulisseau 28 par des tiges 29. Le piston 26 est muni de trous calibrés 30 obturables par une rondelle battante 31, actionnée par un ressort non représenté tendant à maintenir les trous fermés. Un ressort 33, s'appuyant sur une butée fixe 32 solidaire du cylindre 20, tend à ramener le piston d'amortissement en butée contre le fond 17.The cylinder 20 and the tube 12 define a volume annular V2, called damping volume, visible in the Fig.3, in which can slide a piston 26, said piston depreciation. The damping piston rod is consisting of a cylindrical guide piece 27, sliding on the tubular part 12. The part 27 is connected to a slide 28 by rods 29. The piston 26 is fitted with 30 calibrated holes closable by a washer leaf 31, actuated by a spring not shown tending keep the holes closed. A spring 33, based on a fixed stop 32 integral with the cylinder 20, tends to bring back the damping piston in abutment against the bottom 17.

Le fonctionnement du disjoncteur est le suivant:

  • lorsque le disjoncteur est en position enclenchée, le piston 26 est en butée contre le fond 17.
  • au déclenchement, l'ensemble mobile se déplace par la translation de la tringle de manoeuvre 14 actionnée par la commande. Les contacts se séparent (Fig. 2) et le gaz soufflé à travers la buse par le piston de soufflage provoque l'extinction de l'arc.
  • en fin de manoeuvre de déclenchement, (Fig. 3), la couronne 13 entraíne le coulisseau 28 et par suite, le piston 26. Ce dernier crée derrière lui une dépression assurant un bon amortissement du mouvement de l'équipage mobile. A l'inverse d'un amortissement créé par une compression qui procure une force de freinage décroissant au cours du mouvement, un amortissement créé par une dépression est préférable, car il procure une force importante au début de l'amortissement assurant un freinage efficace sans risque de rebondissement.
The circuit breaker works as follows:
  • when the circuit breaker is in the engaged position, the piston 26 is in abutment against the bottom 17.
  • when triggered, the mobile assembly moves by the translation of the operating rod 14 actuated by the control. The contacts separate (Fig. 2) and the gas blown through the nozzle by the blowing piston causes the arc to extinguish.
  • at the end of the triggering maneuver (Fig. 3), the crown 13 drives the slider 28 and consequently, the piston 26. The latter creates behind it a depression ensuring good damping of the movement of the moving assembly. Unlike a damping created by a compression which provides a decreasing braking force during the movement, a damping created by a depression is preferable, because it provides a large force at the beginning of the damping ensuring effective braking without risk of rebound.

L'invention s'applique aux disjoncteurs à haute tension de type conventionnels ou de type à enveloppe métallique à la terre (dit blindé).The invention applies to high circuit breakers voltage of conventional type or of envelope type metallic to earth (so-called shielded).

Claims (3)

Disjoncteur à haute tension comprenant des contacts fixes (2, 3) et un ensemble mobile comprenant des contacts mobiles (7, 5A), l'ensemble mobile étant relié à une commande par l'intermédiaire d'une tige de manoeuvre (14), le disjoncteur comprenant un dispositif d'amortissement du mouvement de la tige (14) en fin de manoeuvre de déclenchement, caractérisé en ce que ledit dispositif comprend un piston d'amortissement (26) entraíné par le mouvement de la tige en fin de manoeuvre de déclenchement et se déplaçant dans un cylindre (20) dans un sens tel que le volume compris entre piston (26) et le fond (17) du cylindre croisse pendant la manoeuvre, engendrant une dépression dans ce volume.High voltage circuit breaker with fixed contacts (2, 3) and a mobile assembly comprising mobile contacts (7, 5A), the mobile assembly being connected to a control by via an operating rod (14), the circuit breaker comprising a device for damping the movement of the rod (14) at the end of the triggering operation, characterized in that said device comprises a piston damping (26) driven by the movement of the rod in end of triggering maneuver and moving in a cylinder (20) in a direction such that the volume between piston (26) and the bottom (17) of the cylinder increases during the maneuver, causing a depression in this volume. Disjoncteur selon la revendication 1, caractérisé en ce que le piston d'amortissement (26) dégage, en fin de manoeuvre, des trous mettant en communications le volume en dépression avec le reste de la chambre.Circuit breaker according to claim 1, characterized in that the damping piston (26) releases at the end of maneuver, holes connecting the volume in depression with the rest of the room. Disjoncteur selon l'une des revendications 1 et 2, caractérisé en ce que le piston d'amortissement (26) comprime le volume placé devant lui lors de la manoeuvre de déclenchement.Circuit breaker according to one of claims 1 and 2, characterized in that the damping piston (26) compresses the volume placed in front of him when maneuvering trigger.
EP97401963A 1996-09-23 1997-08-21 High-voltage circuit breaker with absorber Expired - Lifetime EP0831503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611545 1996-09-23
FR9611545A FR2753834B1 (en) 1996-09-23 1996-09-23 HIGH VOLTAGE CIRCUIT BREAKER WITH SHOCK ABSORBER

Publications (2)

Publication Number Publication Date
EP0831503A1 true EP0831503A1 (en) 1998-03-25
EP0831503B1 EP0831503B1 (en) 2001-11-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401963A Expired - Lifetime EP0831503B1 (en) 1996-09-23 1997-08-21 High-voltage circuit breaker with absorber

Country Status (8)

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US (1) US5877465A (en)
EP (1) EP0831503B1 (en)
AT (1) ATE209825T1 (en)
BR (1) BR9704769A (en)
CA (1) CA2214966C (en)
DE (1) DE69708568T2 (en)
ES (1) ES2166957T3 (en)
FR (1) FR2753834B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2689444B8 (en) 2011-03-25 2017-10-11 ABB Schweiz AG Tap changer having an improved vacuum interrupter actuating assembly
EP2689443B1 (en) * 2011-03-25 2015-03-04 ABB Technology AG Tap changer having a vacuum interrupter assembly with an improved damper
CN105206439B (en) * 2015-10-09 2019-01-25 许继电气股份有限公司 A kind of pneumatic operator and the locomotive high-voltage switch gear using the operating mechanism
JP2018049764A (en) * 2016-09-23 2018-03-29 株式会社日立産機システム Switch unit and railway vehicle
CN112744362B (en) * 2020-12-29 2023-04-14 中国航空工业集团公司西安飞机设计研究所 Sensor-load mechanism-damper integrated device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE844333C (en) * 1942-02-26 1952-07-21 Brown Ag Compressed air drive for switch with air damping
DE1198908B (en) * 1962-12-12 1965-08-19 Sachsenwerk Licht & Kraft Ag Fluid damping pump for electrical circuit breakers
DE2943881A1 (en) * 1978-10-30 1980-05-14 Tokyo Shibaura Electric Co GAS-INSULATED DISCONNECTOR
DE3104411A1 (en) * 1981-02-09 1982-08-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrical compression switch
EP0508160A2 (en) * 1991-04-12 1992-10-14 GEC Alsthom T&D AG Gas blast circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE385342B (en) * 1974-09-30 1976-06-21 Asea Ab CONTROLLER FOR QUICK ON-FROM MANUFACTURE OF RESISTOR CONTACT KIT IN HIGH VOLTAGE PRESSURE GAS SWITCH
US4459447A (en) * 1982-01-27 1984-07-10 Mitsubishi Denki Kabushiki Kaisha Self extinguishing type gas circuit breaker
FR2638564B1 (en) * 1988-11-02 1990-11-30 Alsthom Gec HIGH VOLTAGE CIRCUIT BREAKER WITH DIELECTRIC GAS UNDER PRESSURE
FR2715499B1 (en) * 1994-01-25 1996-03-15 Gec Alsthom T & D Sa Self-blowing circuit breaker with pneumatically locked piston.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE844333C (en) * 1942-02-26 1952-07-21 Brown Ag Compressed air drive for switch with air damping
DE1198908B (en) * 1962-12-12 1965-08-19 Sachsenwerk Licht & Kraft Ag Fluid damping pump for electrical circuit breakers
DE2943881A1 (en) * 1978-10-30 1980-05-14 Tokyo Shibaura Electric Co GAS-INSULATED DISCONNECTOR
DE3104411A1 (en) * 1981-02-09 1982-08-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electrical compression switch
EP0508160A2 (en) * 1991-04-12 1992-10-14 GEC Alsthom T&D AG Gas blast circuit breaker

Also Published As

Publication number Publication date
DE69708568T2 (en) 2002-08-01
US5877465A (en) 1999-03-02
BR9704769A (en) 1999-01-19
ATE209825T1 (en) 2001-12-15
FR2753834A1 (en) 1998-03-27
CA2214966C (en) 2001-12-25
CA2214966A1 (en) 1998-03-23
ES2166957T3 (en) 2002-05-01
FR2753834B1 (en) 1998-12-04
DE69708568D1 (en) 2002-01-10
EP0831503B1 (en) 2001-11-28

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