EP0681737B1 - Paquet de plaques d'extinction pour une chambre d'extinction d'arc - Google Patents

Paquet de plaques d'extinction pour une chambre d'extinction d'arc Download PDF

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Publication number
EP0681737B1
EP0681737B1 EP94901686A EP94901686A EP0681737B1 EP 0681737 B1 EP0681737 B1 EP 0681737B1 EP 94901686 A EP94901686 A EP 94901686A EP 94901686 A EP94901686 A EP 94901686A EP 0681737 B1 EP0681737 B1 EP 0681737B1
Authority
EP
European Patent Office
Prior art keywords
arc
quenching
web
plates
exit openings
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
EP94901686A
Other languages
German (de)
English (en)
Other versions
EP0681737A1 (fr
Inventor
Alfred Nyzner
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria AG
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Filing date
Publication date
Application filed by Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0681737A1 publication Critical patent/EP0681737A1/fr
Application granted granted Critical
Publication of EP0681737B1 publication Critical patent/EP0681737B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a quenching plate package for an arc quenching chamber for switches, in particular for circuit breakers, consisting of quenching plates arranged in parallel or in a fan shape, a holding part made of insulating material with a U-shaped cross-sectional shape, in which the quenching plates are fixed in their position and which is opposite the arc entry Web arc exit openings, which are each arranged between adjacent quenching plates.
  • Quenching plate package for arc quenching chambers have been proposed in the most varied of embodiments and have the purpose of quickly guiding the arc which arises when switching, in particular the arc which arises when circuit breakers are triggered when the contacts open, the arc forming between the opening contacts partly through the magnetic one Field of switching elements, but partly blown towards the quenching plates by the suction effect of the quenching plate package, then the hot gases between the quenching plates are cooled and led to the arc exit openings of the arc quenching chamber and through these to the blow-off opening of the switch.
  • Extinguishing sheet package for arc quenching chambers also have the task of dividing the arc and thus increasing the arc voltage.
  • a problem with the known quenching plate package for arc quenching chambers is also that after the ionized gases have emerged from the arc exit openings, so-called external flashovers occur between adjacent arc exit openings. Such external flashovers can be prevented by keeping the arc exit openings small. Small arc discharge openings have the disadvantage, however, that they hinder the gas escape and are fluidically unfavorable.
  • An arc quenching chamber is known from SU-836 691, the arc outlet openings of which are closed on the outside by metal grids to which different voltages are applied in order to accelerate the recombination of ions.
  • These surrounding walls are provided around the metal grids in order to electrically isolate the metal grids from one another.
  • the invention has for its object to propose a quenching plate package for an arc quenching chamber, which improves the blowing off of the exhaust gases to the blow-off openings of the switch without impairing their effect and function and prevents flashovers.
  • this is achieved in a generic quenching plate packet in that at least one rib, which separates adjacent arc exit openings from the outside of the web of the U-shaped holding part, projects outwards, and that the rib is formed in a serpentine shape and essentially opposite regions of adjacent arc exit openings surrounds over half of its circumference.
  • the measure according to the invention results in improved flow conditions, so that the arc gases are more easily controlled and blown off better can.
  • the at least one rib which projects from the web on the outside of the web according to the invention, separates adjacent arc exit openings on the outside of the web, so that the air gap between the arc exit openings of adjacent chambers (provided between two adjacent quenching plates) is increased. Overturns are thus prevented even in the case of larger-sized and therefore aerodynamically favorable arc exit openings, although the arc exit openings are provided in the web of the U-shaped molded part.
  • the at least one rib does not completely surround the light exit openings in the web of the U-shaped molded part, but essentially over its half circumference. It is only important that the air gap between adjacent arc exit openings is kept so large that arcing is prevented.
  • An advantageous embodiment of the invention also extends to an embodiment of the quenching plate package for an arc quenching chamber, in which it is provided that two rows of arc exit openings are provided in the web of the U-shaped holding part. If two ribs are provided in this embodiment, it can be provided according to the invention that one rib runs mirror-symmetrically to the other rib. This results in a total of three channels on the outside of the web of the holding part which has the arc outlet openings (one between the ribs and one each between a rib and the adjacent wall of the housing of the switch into which the quenching plate package for the arc quenching chamber is inserted), through which the Exhaust gases can be discharged without the risk of flashovers.
  • the available passage cross section of the outlet openings for the arc or the arc gases when blowing off from the quenching plate package for the arc quenching chamber can be increased without the risk of outside flashovers if, according to a proposal of the invention, it is provided that the arc exit openings are designed as elongated holes, the longer extension of which runs parallel to the quenching plates.
  • the at least one rib is preferably formed in one piece with the web of the U-shaped holding part.
  • a simple construction of the quenching plate package according to the invention for the arc quenching chamber is obtained if it is provided that the quenching plates on their longitudinal edges project from these and lie in the plane of the quenching plates, strip-shaped projections which have correspondingly shaped openings in the legs of the U-shaped holding part intervention.
  • An embodiment has proven itself in which it is provided that protrusions carried by the extinguishing plates protrude into all openings provided in the legs of the U-shaped holding part.
  • the quenching plate packet 1 for an arc quenching chamber has a plurality of quenching plates 2 which are arranged parallel to one another. Each quenching plate 2 has an essentially V-shaped slot 3 on the arc entry side.
  • each baffle plate 2 has two strip-shaped projections 5 and 6 on both longitudinal side edges, which in corresponding openings 7 and 8 are used in the legs 9 and 10 of the holding part 4. Apart from the openings 7 and 8 which are filled by the projections 5 and 6 of the extinguishing plates 2 and are therefore essentially closed, the holding part 4 has no openings in its legs 9 and 10.
  • arc exit openings 14 are provided in web 11 of holding part 4 in two rows 12 and 13. 4, the arc exit openings 14 have the shape of elongated holes, the longer extension of which is aligned parallel to the quenching plates 2.
  • ribs 15 and 16 are provided, which, as also shown in FIG. 4, run in a serpentine shape and surround each of the arc exit openings 14 essentially over half their circumference.
  • Fig. 4 also shows that the ribs 15 and 16 are arranged mirror-symmetrically to the longitudinal center plane 17 of the quenching plate package for an arc quenching chamber.
  • serpentine ribs 15 and 16 which protrude from the outside of the web 11 of the holding part 4 and partially surround the arc exit openings 14, ribs of a different shape can also be provided.
  • ribs are conceivable that are ring-shaped or partially ring-shaped. It is only essential that the air gap between adjacent arc exit openings is increased by the rib or the ribs.
  • the invention can be represented as follows, for example:
  • a quenching plate packet 1 for an arc quenching chamber consists of several quenching plates 2, which are inserted in a U-shaped holding part 4 made of insulating material.
  • Arc exit openings 14 are provided in the web 11 of the holding part 4 opposite the arc entrance.
  • the web 11 carries on its outside two serpentine ribs 15, 16, which enlarge the air gap between adjacent arc exit openings 14. This prevents external flashovers, although the arc outlet openings 14 can be dimensioned so large that the outflow of the ionized arc gases from the quenching plate packet 1 for an arc quenching chamber is not hindered.
  • a total of three channels for the gas flow are formed by the ribs 15, 16 together with the walls of the housing in which the quenching plate packet 1 is accommodated. This further facilitates the discharge of the arc gases.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Toys (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Vacuum Packaging (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Basic Packing Technique (AREA)

Claims (7)

  1. Paquet de tôles d'extinction pour une chambre (1) d'extinction d'arc pour un interrupteur, notamment pour un disjoncteur de protection de ligne, comprenant des tôles (2) d'extinction disposées parallèlement les unes aux autres ou en éventail, un élément support (4) en matériau isolant, à section transversale en U, dans lequel les tôles (2) d'extinction sont maintenues en position et qui comporte, dans sa partie dos (11) située en vis-à-vis de l'entrée d'arc, des ouvertures (14) de sortie d'arc qui sont disposées chaque fois entre des tôles d'extinction voisines, caractérisé par le fait que, sur la face extérieure de la partie dos (11) de l'élément support (4) en forme de U, au moins une nervure (15, 16) sépare les unes des autres les ouvertures (14) de sortie d'arc et fait saillie vers l'extérieur et par le fait que la nervure (15 ou 16) a une forme de sinusoïde et entoure chaque fois, sensiblement sur la moitié de leur longueur, des régions en vis-à-vis d'ouvertures (14) de sortie d'arc.
  2. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon la revendication 1, caractérisé par le fait que deux rangées d'ouvertures (14) de sortie d'arc sont prévues dans la partie dos (11) de l'élément support en forme de U.
  3. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon la revendication 2, caractérisé par le fait qu'il est prévu deux nervures (15, 16) et qu'une (15) nervure est symétrique par rapport à l'autre (16) nervure.
  4. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon l'une des revendications 1 à 3, caractérisé par le fait que les ouvertures (14) de sortie d'arc sont agencées sous forme de trous oblongs, dont le grand côté est parallèle aux tôles d'extinction (2).
  5. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon l'une des revendications 1 à 4, caractérisé par le fait que la nervure (15, 16) est liée d'une pièce à la partie dos (11).
  6. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon l'une des revendications 1 à 5, caractérisé par le fait que les tôles d'extinction (2) portent, sur leurs bords longitudinaux, des saillies (5, 6) en forme de barrettes qui s'étendent à partir desdits bords longitudinaux, sont situées dans le plan des tôles d'extinction (2) et pénètrent dans des ouvertures (7, 8) de forme adaptée dans les branches (9, 10) de l'élément support (4) en forme de U.
  7. Paquet de tôles d'extinction pour une chambre d'extinction d'arc selon la revendication 6, caractérisé par le fait que des saillies (5, 6) des tôles d'extinction (2) pénètrent dans toutes les ouvertures (7, 8) prévues dans les branches (9, 10) de la partie support (4) en U.
EP94901686A 1993-01-27 1993-12-13 Paquet de plaques d'extinction pour une chambre d'extinction d'arc Expired - Lifetime EP0681737B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT134/93 1993-01-27
AT0013493A AT404770B (de) 1993-01-27 1993-01-27 Lichtbogenlöschkammer für schalter
PCT/AT1993/000193 WO1994017539A1 (fr) 1993-01-27 1993-12-13 Paquet de plaques d'extinction pour une chambre d'extinction d'arc

Publications (2)

Publication Number Publication Date
EP0681737A1 EP0681737A1 (fr) 1995-11-15
EP0681737B1 true EP0681737B1 (fr) 1997-02-12

Family

ID=3482432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94901686A Expired - Lifetime EP0681737B1 (fr) 1993-01-27 1993-12-13 Paquet de plaques d'extinction pour une chambre d'extinction d'arc

Country Status (12)

Country Link
EP (1) EP0681737B1 (fr)
AT (2) AT404770B (fr)
AU (1) AU674719B2 (fr)
DE (1) DE59305471D1 (fr)
DK (1) DK0681737T3 (fr)
ES (1) ES2100665T3 (fr)
FI (1) FI108681B (fr)
GR (1) GR3022624T3 (fr)
HR (1) HRP940039B1 (fr)
NO (1) NO307279B1 (fr)
SI (1) SI9300669B (fr)
WO (1) WO1994017539A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014002902B4 (de) * 2014-02-27 2019-08-01 Schaltbau Gmbh Löschkammer für ein Schütz und ein Schütz zum Löschen von Lichtbögen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110790A (en) * 1961-05-09 1963-11-12 Gen Electric Electric circuit interrupter
DE3042168A1 (de) * 1980-11-08 1982-06-16 Brown, Boveri & Cie Ag, 6800 Mannheim Leitungsschutzschalter
HU187905B (en) * 1983-05-18 1986-03-28 Villamosipari Kutato Intezet,Hu Arc extinguishing construction for electric switches
DE3630447A1 (de) * 1986-09-06 1988-03-10 Bbc Brown Boveri & Cie Lichtbogenloescheinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Derwent's abstract no. D0498 E/11, Woche 8211,Zusammenfassung von SU 836 691, (NW EXTRAMURAL POLY) 10 Juni 1981 *

Also Published As

Publication number Publication date
NO952868D0 (no) 1995-07-19
HRP940039A2 (en) 1996-08-31
FI953417A (fi) 1995-07-12
FI953417A0 (fi) 1995-07-12
NO307279B1 (no) 2000-03-06
ATA13493A (de) 1998-06-15
AU674719B2 (en) 1997-01-09
SI9300669A (en) 1994-09-30
DE59305471D1 (de) 1997-03-27
SI9300669B (sl) 2002-02-28
HRP940039B1 (en) 2000-04-30
AU5618794A (en) 1994-08-15
EP0681737A1 (fr) 1995-11-15
NO952868L (no) 1995-07-19
GR3022624T3 (en) 1997-05-31
AT404770B (de) 1999-02-25
FI108681B (fi) 2002-02-28
ATE148958T1 (de) 1997-02-15
ES2100665T3 (es) 1997-06-16
DK0681737T3 (da) 1997-03-10
WO1994017539A1 (fr) 1994-08-04

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