EP0665565B1 - Système de contact pour disjoncteur haute puissance - Google Patents

Système de contact pour disjoncteur haute puissance Download PDF

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Publication number
EP0665565B1
EP0665565B1 EP95101010A EP95101010A EP0665565B1 EP 0665565 B1 EP0665565 B1 EP 0665565B1 EP 95101010 A EP95101010 A EP 95101010A EP 95101010 A EP95101010 A EP 95101010A EP 0665565 B1 EP0665565 B1 EP 0665565B1
Authority
EP
European Patent Office
Prior art keywords
contact
screen
contact system
contact element
leaf springs
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
EP95101010A
Other languages
German (de)
English (en)
Other versions
EP0665565A3 (fr
EP0665565A2 (fr
Inventor
Prof. Dr. Ottmar Müller
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 Patent GmbH
Original Assignee
ABB Patent GmbH
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 Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0665565A2 publication Critical patent/EP0665565A2/fr
Publication of EP0665565A3 publication Critical patent/EP0665565A3/fr
Application granted granted Critical
Publication of EP0665565B1 publication Critical patent/EP0665565B1/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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • 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
    • H01H33/91—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 the arc-extinguishing fluid being air or gas

Definitions

  • the invention relates to a contact system for a high-voltage circuit breaker according to the preamble of claim 1.
  • a contact system is e.g. described in EP-A-0015865.
  • Such high-voltage circuit breakers are SF 6 gas-insulated switches, which have a fixed contact piece, over which a movable contact piece can be pushed, the movable contact piece being assigned a blow piston or blow cylinder system, which compresses a gas volume during the switching-off process, so that after the blow cylinder has run off the fixed one Contact piece a gas flow for blowing the arc generated between the movable contact piece and the fixed contact piece is generated.
  • the object of the invention is a contact system of the beginning to create the type mentioned, in which the burning behavior is improved.
  • the erosion contact piece is made of graphite
  • the arc has a base point on the erosion contact piece or on the graphite ring, on which it can also rotate, so that experience has shown that no discrete base points, ie hot spots, arise and peaks are avoided after the arc has been extinguished become.
  • Graphite only forms gaseous waste products, especially CF 4 ; the solid waste products that arise when only metal contact pieces are provided are avoided.
  • the erosion contact piece made of graphite remains relatively flat even after frequent arcing, so that only a weakly inhomogeneous field can arise.
  • the arc base point on the graphite is diffuse, which means that extreme hot spots that contribute to strong electrode erosion and can generate metal vapor are practically excluded.
  • Another advantageous embodiment of the invention is the claim 5. This is how it is achieved that the outer shell of the circuit breaker, that is Switch housing, can be made of plastic.
  • the shielding pot has the advantage that a weakly inhomogeneous field is generated to the outside and all sharp-edged live parts are shielded become.
  • the shielding pot also allows such easy to design live parts.
  • the metal shield through the shielding pot also takes when switching, the hot gases open and protect thus the insulating housing of the switching chamber.
  • the shielding can according to the claim 6 additional contact leaf springs are provided, which lie against the inner surface of the shielding pot and thus form the actual continuous current contacts. If the contact leaf springs according to claim 7 in Extend towards the bottom of the shielding pot, then form this also has a shield so that the entire through the shielding pot and the contact leaf springs formed screen wall is extended so that the hot Gases from the switching arcs from the insulating wall in one even larger area can be kept away. For the Decaying times of 10 ms already bring a considerable amount Protective effect for the insulating housing.
  • the pot shape of the shield forms one mechanical reinforcement of the entire insulating housing, because the strain on the floor area due to the increased Pressure values when switching off the rounded shield or taken up by the rounded shielding pot and on the mechanically very stable housing cylinder wall is transmitted.
  • the reinforced floor surface the mechanical fastening of Connection parts, e.g. B. the fixed contact piece.
  • a shield housing 13 made of metal, which has a pot shape, wherein the cylinder wall 14 on the inner surface of the cylinder section 11 is present.
  • the bottom 15 of the shielding pot is thickened relative to the cylinder wall 14. Is on the inside of the pot base 15 a fixed contact piece 16, which is not in the bottom of the pot attached in more detail.
  • the fixed contact piece 16 acts with a tubular, movable Contact piece 17 via the contact fingers 27 together which is attached to a piston crown 18 which is radial and perpendicular to the central longitudinal axis on the inner surface of the cylinder wall 11 of the insulating housing with the interposition of piston rings 38 - preferably made of PTFE.
  • the movable switching tube 17 projects over the piston crown 18 out to receive the contact fingers 27 on one side; in Distance to the free end 19 of the Scahlt tube 17 in the area the contact fingers 27 are on the piston crown 18
  • Inner cylinder 20 and an outer cylinder 21 attached, the Ends facing away from the piston crown 18 each have a flange 22 or 23 have inside.
  • the flanges 22 and 23 are spaced apart and take between them a burning ring 24 resiliently on the preferably consists of graphite.
  • This burn ring can closed or composed of several ring parts be what improves assembly.
  • the inner and outer cylinder are adjacent to each other in the piston crown 18 Section firmly connected, so that only in a flanged area 25, the two cylinders are separated from each other so that a relative stiff suspension of the two flanged edges 22 and 23 generated becomes.
  • the contact finger 27 which has a bearing section 28, which is in the vicinity of the piston crown 18, and have a contact area 29.
  • the contact area 29 is located between the free end of the switching tube 19 and the flanged edge 22.
  • the contact fingers have a radial outside a recess 30 in which a leaf spring 31st are provided, which are on the inner surface of the cylinder 20 support and so the contact finger 27 to the Support point at 29 rotatable inwards against the fixed Press contact piece 16, moving inwards on the one hand through the free switching tube end 19 and on the other hand by an axially extending recess 31 on Flanged edge 22 and an axially extending projection 32 is effected on the contact finger 27, the projection 32 at the contact surface end of the contact finger 27 is provided.
  • a blow cylinder 33 is also located on the piston head 18 attached, which surrounds the outer cylinder 21 at a distance and is bent towards the fixed contact piece 16; the Blow cylinder 33 defines an opening 34 there as Nozzle for the extinguishing gases. Furthermore, are on the Piston plate 18 fixed contact leaf springs 35 that against the inner surface of the cylinder portion 14 of the shielding pot 13 come to rest and come off the piston crown 18 extend towards the bottom of the pot.
  • the movable contact piece 17 moves together with the piston or pot base 18, the contact arrangement and the blow cylinder 33 in the direction of arrow P, the gas in the space 37 being compressed until the contact finger part 29 or the Burn-off contact 24 leaves the fixed contact piece 16.
  • the compressed gas then flows into the nozzle 34 according to the direction of the arrow P 1 and thereby blows the arc by blowing off a partial flow of the gas through the movable switching tube 17 and another partial flow of the gas through the nozzle 34.

Landscapes

  • Circuit Breakers (AREA)
  • Contacts (AREA)

Claims (11)

  1. Système de contact pour un disjoncteur de puissance haute tension, comportant une pièce de contact fixe (16) et une pièce de contact mobile ainsi qu'un ensemble cylindre de soufflage (33) qui est lié à la pièce de contact mobile conformée de préférence en tube contacteur (17), la pièce de contact comportant des doigts de contact (27 à 29) sollicités par ressort, caractérisé par le fait que les doigts de contact (27 à 29) sont montés dans une cage (26), à l'extrémité côté points de contact de laquelle est fixée au moins une pièce de contact d'usure (24) en un matériau présentant une résistance à l'usure élevée.
  2. Système de contact selon la revendication 1, caractérisé par le fait que le matériau est du graphite.
  3. Système de contact selon une des revendications 1 et 2, caractérisé par le fait que la cage (26) est délimitée radialement vers l'extérieur par deux corps enveloppe (20, 21) cylindriques métalliques, dont les extrémités sont repliées radialement vers l'intérieur et tiennent entre elles, de manière élastique, la pièce de contact d'usure (24).
  4. Système de contact selon une des revendications précédentes, caractérisé par le fait que les doigts de contact (27 à 29) sont montés flottants dans la cage (26) délimitée radialement vers l'intérieur par l'extrémité libre (19) du tube contacteur, les doigts de contact (27 à 29) étant pressés radialement vers l'intérieur par un ressort à lame (31), qui prend appui sur le corps enveloppe intérieur (20), de manière telle que leurs surfaces de contact (29), dans la position de coupure, se trouvent à l'intérieur du cylindre défini par la surface extérieure de la pièce de contact fixe (16) et, dans la position fermée, soit pressées contre la pièce de contact fixe (16).
  5. Système de contact selon une des revendications précédentes, caractérisé par le fait que l'agencement de contact est logé à l'intérieur d'un boítier (10) en matière plastique, sur la surface intérieure duquel est fixée une cuve de blindage (13, 14, 15), dont le fond (15) sert à la fixation de la pièce de contact fixe (16) et qui chevauche l'agencement de contact.
  6. Système de contact selon la revendication 5, caractérisé par le fait que des ressorts à lame de contact (35) sont liés au tube contacteur mobile (17) au niveau de la surface périphérique du piston (18), lesquels ressorts, dans la position fermée, sont appliqués contre la surface intérieure de la cuve de blindage (13 à 15), la longueur de la cuve de blindage (13 à 15) étant telle que, lors de la coupuren les ressorts à lame de contact (35) sortent de la cuve de blindage (13 à 15) avant que le tube contacteur (17) mobile et la pièce de contact fixe (16) soient séparés par l'intermédiaire les doigts de contact (27).
  7. Système de contact selon la revendication 6, caractérisé par le fait que les ressorts à lame de contact (35) sont situés sensiblement sur un cylindre et s'étendent depuis le point de fixation en direction de la cuve de blindage (15).
  8. Système de contact selon une des revendications précédentes, caractérisé par le fait que des pièces de contact fixes sont prévues sur la surface intérieure de la cuve de blindage (13 à 15) à l'extrémité libre de celle-ci, lesquelles pièces de contact coopèrent avec les ressorts à lame de contact (35).
  9. Système de contact selon une des revendications précédentes, caractérisé par le fait que les corps enveloppe (20, 21) sont en acier amagnétique.
  10. Système de contact selon une des revendications précédentes, caractérisé par le fait que les corps enveloppes (20, 21), dans la région située à l'opposé du bord ourlé, sont liés ente eux, de préférence sont soudés, de telle sorte que les extrémités de bords ourlés (22, 23) libres puissent fléchir élastiquement pour tenir la pièce de contact d'usure (24).
  11. Système de contact selon une des revendications précédentes, caractérisé par le fait que chaque doigt de contact (27) comporte une saillie axiale (32) qui s'accroche derrière une saillie axiale (31) sur le bord ourlé (22) du corps enveloppe intérieur (20).
EP95101010A 1994-02-01 1995-01-26 Système de contact pour disjoncteur haute puissance Expired - Lifetime EP0665565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402935 1994-02-01
DE4402935A DE4402935A1 (de) 1994-02-01 1994-02-01 Kontaktsystem für einen Hochspannungsleistungsschalter

Publications (3)

Publication Number Publication Date
EP0665565A2 EP0665565A2 (fr) 1995-08-02
EP0665565A3 EP0665565A3 (fr) 1997-09-17
EP0665565B1 true EP0665565B1 (fr) 2000-06-28

Family

ID=6509148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101010A Expired - Lifetime EP0665565B1 (fr) 1994-02-01 1995-01-26 Système de contact pour disjoncteur haute puissance

Country Status (4)

Country Link
EP (1) EP0665565B1 (fr)
JP (1) JPH07262890A (fr)
KR (1) KR950034337A (fr)
DE (2) DE4402935A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757403A1 (de) * 1997-12-16 1999-07-01 Siemens Ag Kontaktlamelle für ein Kontaktstück eines Hochspannungsschalters und Kontaktlamellenanordnung
DE19816509B4 (de) * 1998-04-14 2006-08-10 Abb Schweiz Ag Abbrandschaltanordnung
CN102439673B (zh) * 2009-08-12 2014-06-11 Abb技术有限公司 用于开关装置的梅花触头和电触头系统
JP5908268B2 (ja) * 2011-12-06 2016-04-26 株式会社東芝 ガス遮断器
US12230466B2 (en) 2023-03-03 2025-02-18 Hyundai Electric & Energy Systems Co., Ltd. Earthing switch
EP4428887A1 (fr) * 2023-03-06 2024-09-11 Hyundai Electric & Energy Systems Co., Ltd. Interrupteur de mise à la terre
US12476055B2 (en) 2023-03-17 2025-11-18 Hyundai Electric & Energy Systems Co., Ltd. Earthing switch

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE623364C (fr) * 1932-02-25
DE1191465B (de) * 1963-09-06 1965-04-22 Siemens Ag Elektrischer Schalter fuer grosse Einschaltstroeme
CH413960A (de) * 1964-12-23 1966-05-31 Bbc Brown Boveri & Cie Kontaktanordnung für Druckgasschalter
SE310019B (fr) * 1968-05-15 1969-04-14 Asea Ab
FR2057344A5 (fr) * 1969-08-12 1971-05-21 Merlin Gerin
DE2122183A1 (de) * 1971-04-30 1972-11-16 Siemens AG, 1000 Berlin u. 8000 München Blaskolbenschalter
DD128177B1 (de) * 1976-11-02 1983-08-17 Walter Hojdem Kontaktanordnung fuer elektrische leistungsschaltgeraete
DE2658235A1 (de) * 1976-12-22 1978-07-06 Siemens Ag Verfahren und vorrichtung zur loeschung eines lichtbogens in einem gasstroemungsschalter
DE2908982C3 (de) * 1979-03-06 1982-01-28 Siemens AG, 1000 Berlin und 8000 München Elektrischer Druckgasschalter
CH645204A5 (de) * 1979-05-25 1984-09-14 Bbc Brown Boveri & Cie Elektrischer schalter fuer grosse stroeme.
DE3242467C2 (de) * 1982-11-02 1986-06-05 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Autopneumatischer Druckgasschalter
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
CH661144A5 (de) * 1983-10-28 1987-06-30 Bbc Brown Boveri & Cie Hochspannungsleistungsschalter.
DE3434083A1 (de) * 1984-09-17 1986-03-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Leistungskontaktelement fuer hochspannungs-leistungsschalter
DE3438635A1 (de) * 1984-09-26 1986-04-03 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
CH667940A5 (de) * 1985-08-23 1988-11-15 Bbc Brown Boveri & Cie Elektrischer schalter.
DE3624636A1 (de) * 1986-07-18 1988-01-28 Siemens Ag Kontaktsystem fuer einen elektrischen druckgasschalter
DE3722541A1 (de) * 1987-07-08 1989-01-19 Licentia Gmbh Autopneumatischer druckgasschalter
DE4127901A1 (de) * 1991-08-22 1993-02-25 Siemens Ag Hochspannungs-leistungsschalter
DE4200896A1 (de) * 1992-01-13 1993-07-15 Siemens Ag Hochspannungsleistungsschalter
FR2692716B1 (fr) * 1992-06-18 1994-08-19 Alsthom Gec Disjoncteur à haute ou moyenne tension à expansion thermique et soufflage d'appoint.

Also Published As

Publication number Publication date
DE59508500D1 (de) 2000-08-03
EP0665565A3 (fr) 1997-09-17
DE4402935A1 (de) 1995-08-03
EP0665565A2 (fr) 1995-08-02
JPH07262890A (ja) 1995-10-13
KR950034337A (ko) 1995-12-28

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