EP0075668B1 - Disjoncteur à gaz comprimé - Google Patents

Disjoncteur à gaz comprimé Download PDF

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Publication number
EP0075668B1
EP0075668B1 EP82106449A EP82106449A EP0075668B1 EP 0075668 B1 EP0075668 B1 EP 0075668B1 EP 82106449 A EP82106449 A EP 82106449A EP 82106449 A EP82106449 A EP 82106449A EP 0075668 B1 EP0075668 B1 EP 0075668B1
Authority
EP
European Patent Office
Prior art keywords
gas
cylindrical portion
switch according
tongues
blast 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
Application number
EP82106449A
Other languages
German (de)
English (en)
Other versions
EP0075668A3 (en
EP0075668A2 (fr
Inventor
Christian Dr. Sturzenegger
Bruno Aeschbach
Heinz Aeschbach
Willi Schütz
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.)
General Electric Switzerland GmbH
Original Assignee
Sprecher Energie 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4307337&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0075668(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sprecher Energie AG filed Critical Sprecher Energie AG
Publication of EP0075668A2 publication Critical patent/EP0075668A2/fr
Publication of EP0075668A3 publication Critical patent/EP0075668A3/de
Application granted granted Critical
Publication of EP0075668B1 publication Critical patent/EP0075668B1/fr
Expired 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
    • H01H33/91—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
    • 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
    • H01H2033/888—Deflection of hot gasses and arcing products

Definitions

  • the invention relates to a gas pressure switch of the type mentioned in the preamble of claim 1.
  • Such switches are known for example from US-A-4149051 and US-A-4144426.
  • the end of the two arcing contacts on the outflow side is surrounded by a cooler made of winding layers of metal fabric arranged one above the other, which cooler is intended to cool the hot switching gases escaping and also to at least partially reverse their flow axially.
  • These coolers represent an obstacle to the gas flow suddenly occurring during a switch-off stroke.
  • This obstacle can have the result that the gas flow leaving the blow nozzle after the blowing of the switching arc and before this gas flow reaches the downstream end of the arcing contact, to a certain extent a "standing" Wave »superimposed, ie Strong vibrations form in the gas stream leaving the blow nozzle, which alternately and at a very high frequency result in areas with higher and lower pressures in this gas stream.
  • reduced pressure also means reduced gas density and thus reduced dielectric strength of the gas, especially since it can still be partially ionized.
  • These cooling plates also represent an obstacle to the gas flow suddenly occurring during a switch-off stroke, which is not only a result of the extinguishing gas flowing out of the pressure chamber, but also a result of the sudden heating of the extinguishing gas in the area of the switching arc.
  • the invention is based on the object of designing a switch of the type mentioned in such a way that, during a switch-off stroke, the “grafting” of the cold extinguishing gas can be suppressed against a minimum amount of resistance and that the hot switching gases are not primarily cooled by convection Cooling surfaces takes place, but takes place by swirling the hot switching gases with the still cooling gas of the "graft" that was not directly in contact with the switching arc.
  • FIGS. 1 and 2 The switch shown is a metal-encapsulated gas pressure switch 10 with an essentially tubular, metallic housing 11, which contains an extinguishing gas, for example SF e , under excess pressure.
  • the housing 11 is tightly closed by means of a support insulator 12, which in turn is clamped by means of an annular flange 13.
  • a deflection hood, designated as a whole by 16, is fastened to the lower end of the connection conductor 14, which projects into the interior 15 of the housing 11.
  • This has a base part 17, on the outer side facing the support insulator 12, a connecting piece 18 for receiving the lower part of the connecting conductor 14 is formed.
  • the side of the base part 17 opposite the connector 18 has a deflection surface 19 in the form of a hollow, half torus, a conically tapered flow body 20 being inserted in the base part 17 in the axis of this toroidal deflection surface 19.
  • a fastening and spacing ring 21 is fastened to the outside thereof, for example by means of pins or screw bolts (not shown).
  • a likewise metallic, cylindrical section 22 Connected to the metallic bottom part 17 is a likewise metallic, cylindrical section 22, the inner surface 23 of which is connected to the peripheral part the deflection surface 19 is aligned.
  • Section 22 is pressed firmly against the base part by means of a retaining ring 24.
  • Support ribs 25, for example four of them, project radially inward from the inside of the metallic retaining ring 24, which essentially corresponds to the section 22 with respect to the inside and outside diameter.
  • threaded bores 26 (only one is shown) into which clamping bolts 27 are screwed, the head of which is supported by the base part 17 (FIG. 1, top right).
  • the support ribs 25 carry at their inner end a part of a fixed nominal current contact 28 supporting ring 29, on the lower end of which a ring is attached radially outwardly deflectable contact finger 30, which in the switched-on position (FIG. 1, left) engages with a movable one Are rated current contact 31, the construction and other function will be described with reference to FIG. 2.
  • a tubular (ie, blow-through) tear-off contact pin 35 which forms the other component of the fixed arcing contact 33, is fastened in an exchangeable manner (for example by screwing).
  • This has a central bore 36 extending from its free end, which widens and from which lateral passages 37 extend before the end of the tear-off contact pin 35, the bore 36 continuing in the bore in the hub part 34.
  • the tear-off contact pin 35 in the switched-on position, closes a blowing nozzle 38, which belongs to the movable components of the switch, from an electrically insulating material, for example from PTFE, and engages in an essentially tubular end piece 39, which in itself is the movable one Arcing contact forms in the sense that a foot point of the switching arc attaches to this end piece 39.
  • a blowing nozzle 38 which belongs to the movable components of the switch, from an electrically insulating material, for example from PTFE, and engages in an essentially tubular end piece 39, which in itself is the movable one Arcing contact forms in the sense that a foot point of the switching arc attaches to this end piece 39.
  • two sets of six tongues 41, 42 each are fastened at uniform circumferential intervals, the sets of tongues 41, 42 being arranged in two different planes.
  • the tongues 41 and 42 are, preferably made of conductive material, flat and are preferably with their planes transverse to the axis of the section 22.
  • the tongues 41 are each rotated by 30 ° with respect to the tongues 42, which in itself because of the simpler representation does not appear from FIG. 1.
  • the function of the tongues 41 and 42 will be described below.
  • section 22 there are also windows 43, 44 which lead radially outward from the interior 45 of the deflection hood 16. These windows 43, 44 are covered by a thin-walled tube 46, preferably made of metal, which surrounds the section 22 at a radial distance and is fastened to the fastening ring 21. A jacket space 47 is thus present between this tube 46 and the outer jacket surface of section 22, which, as can be seen in FIG. 1, is open at the bottom.
  • the upper part essentially shows the components already described in the lower part of FIG. 1, so that a repeated description, apart from the assignment of the same reference numbers, appears to be superfluous.
  • the movable nominal current contact 31 has a shoulder 48, by means of which an inlet-side peripheral flange 49 of the blow nozzle 38 is clamped on the front side of an outer, metallic cylinder 50.
  • the movable nominal current contact 31 is screwed axially by means of bolts 51 onto a circumferential bead 52 projecting outwards from the cylinder 50.
  • the cylinder 50 is connected via an essentially annular bottom 53 made of conductor material to an inner, also metallic cylinder 54, which is at the same time a component of the movable arcing contacts ß and in this respect serves as a blow-out pipe and for current supply.
  • an inner, also metallic cylinder 54 On the upper end face of the inner cylinder 54, the end piece 39 already mentioned is exchangeably fastened, for example screwed in.
  • the jacket space between the cylinders 50 and 54 is a pumping or pressure chamber 55, which on one end leads directly into the blowing nozzle 38 and on the other side is delimited by a stationary, ring-shaped pump piston 56.
  • the pump piston 56 is sealed both against the outer wall of the cylinder 54 and against the inner wall of the cylinder 50, and these two cylinders can be displaced along the pump piston 56.
  • the pump piston 56 is supported on a plurality of columns 57 (here three of them). Each column 57 is slidably guided through a passage 58 formed in the bottom 53. Furthermore, as can be seen on the right in FIG. 2, each column 57 has a metallic spacer sleeve 59, which is supported at one end on the side of the pump piston 56 facing away from the pressure chamber 55 and at the other end on the base piece 60 of a further deflection hood 61. Each spacer sleeve 59 is clamped by means of a clamping bolt 62 which passes through it and is screwed into the base piece 60.
  • a sliding contact 63 embedded in each of the bushings 58 acts on the outside of each spacer sleeve 59, which ensures a good electrical connection between the cylinders 50 and 54, which are already galvanically connected to one another, and - via the spacer sleeve 59 - the base piece 60.
  • a plurality of support ribs 64 protrude radially inward from the inner wall of the cylinder 54 and carry an aerodynamically shaped end part 65 of a drive rod 66.
  • a pull and push rod 67 preferably closes off the end part 65 an electrically insulating material, which is slidably guided through a central bore 68 in the base part 60 and - as indicated by dashed lines - is coupled to a drive 69.
  • the movable nominal current contact, the movable arcing contact 40 and the blowing nozzle 38 are firmly coupled to the drive rod 66. It also follows that the movable arcing contact 40, which essentially consists of the end piece 39 and the inner cylinder 54 (as soon as the end piece 39 is released from the fixed arcing contact 33 in the course of a switch-off stroke), can be blown through, the flow channel 70 being supported by the supporting ribs 64 , which offer no significant flow resistance, is enforced.
  • the downstream end of the movable arcing contact 40 is spanned by the aforementioned deflection hood 61, the bottom part 60 of which, as mentioned, is arranged in a stationary manner and therefore also serves as a connection point for the second connecting conductor 71.
  • This bottom piece 60 also has on its side facing the arcing contact 40 a deflection surface 72 surrounding the bore 68 in the form of a half, hollow torus.
  • the deflection hood 61 also has an essentially cylindrical section 73, which connects tangentially to the peripheral part of the deflection surface 72 of the base part 60 and is fastened thereon.
  • a set of tongues 75, 76 are fastened to the inside 74 of section 73 in two planes perpendicular to the axis of section 73.
  • These tongues 75, 76 are also conductive, flat and at right angles to the axis of the section 73 and each arranged at uniform circumferential intervals.
  • FIG. 3 in which the already mentioned geometric arrangement of the tongues 41, 42 and the support ribs 32 is shown in the interior 45 enclosed by the section 22.
  • the thin-walled tube 46 is not shown here.
  • the deflection hood 61 assigned to the set of movable contacts can also be designed similarly to the deflection hood 16, namely with windows and with a thin-walled tube covering them at a radial distance.

Landscapes

  • Circuit Breakers (AREA)

Claims (13)

1. Disjoncteur à gaz comprimé comportant un jeu de contacts fixes et un jeu de contacts mobiles, un contact d'arc (33, 40) pouvant être soufflé axialement et un contact de courant nominal (28, 31) entourant celui-ci coaxialement étant prévus pour chaque jeu, et une buse de soufflage (38) pouvant se déplacer avec le jeu de contacts mobiles, entourant le contact d'arc (40) de celui-ci et obturée, en position de mise en circuit, par le contact d'arc fixe (33), laquelle buse est reliée du côté d'admission, à une chambre de pression (55) pouvant être mise sous pression lors d'une course de mise hors circuit, des moyens étant disposés à l'extrémité d'au moins l'un des contacts d'arc (33, 40), côté évacuation, pour dévier axialement et vers l'extérieur les gaz de coupure d'une course de mise hors circuit, caractérisé en ce que les extrémités côté évacuation des deux contacts d'arc (33, 40) sont recouvertes chacune par un capuchon de déviation (16, 61) sensiblement en forme de coupe, lesquels capuchons de déviation sont ouverts à leurs extrémités tournées l'une vers l'autre et comportant chacune un fond (17, 60) avec une surface de déviation (19, 72) ayant en coupe transversale la forme d'un demi-tore creux, au bord extérieur de laquelle se raccorde une portion sensiblement cylindrique (22, 24, 73) qui porte plusieurs languettes (41, 42, 75, 76) saillant vers l'intérieur à partir de sa paroi intérieure (23, 74) et disposées à intervalles périphériques égaux.
2. Disjoncteur à gaz comprimé selon la revendication 1, caractérisé en ce que les languettes (41, 42, 75, 76) ont une surface plane et sont disposées avec leur plan transversalement à l'axe de la portion cylindrique (22, 24, 73).
3. Disjoncteur à gaz comprimé selon la revendication 2, caractérisé en ce que les languettes (41, 42, 75, 76) sont de forme sensiblement rectangulaire.
4. Disjoncteur à gaz comprimé selon la revendication 2, caractérisé en ce que les languettes (41, 42, 75, 76) sont disposées par groupes dans plusieurs plans situés transversalement à l'axe de la portion cylindrique (22, 24, 73).
5. Disjoncteur à gaz comprimé selon la revendication 4, caractérisé en ce que les languettes d'un groupe (41, 75) sont décalées dans le sens de la périphérie par rapport aux languettes (42, 76) du groupe voisin.
6. Disjoncteur à gaz comprimé selon la revendication 1, caractérisé en ce que les languettes (41, 42, 75, 76) s'étendent radialement tout au plus sur la moitié du rayon de la portion cylindrique (22, 24, 73).
7. Disjoncteur à gaz comprimé selon la revendication 4 ou 5, caractérisé en ce que la surface totale de toutes les languettes disposées dans un plan (41, 42, 75, 76) correspond respectivement tout au plus à 20% de la section de passage de la portion cylindrique (22, 24, 73) mesurée dans ce plan.
8. Disjoncteur à gaz comprimé selon l'une des revendications 1 à 7, caractérisé en ce qu'il y a dans la portion cylindrique (22, 24) d'au moins l'un des capuchons (16) des passages (43, 44) qui sont recouverts par un tube (46) à paroi mince entourant la portion cylindrique (22, 24) à une certaine distance radiale.
9. Disjoncteur à gaz comprimé selon l'une des revendications 1 à 7, caractérisé en ce que le capuchon de déviation (61) associé au contact d'arc mobile (40) est disposé fixe.
10. Disjoncteur à gaz comprimé selon la revendication 8, caractérisé en ce que le volume d'enveloppe (47) entre la portion cylindrique (22, 24) et le tube à paroi mince (46) est ouvert au moins à l'extrémité tournée vers le bord libre de la portion cylindrique (22, 24).
11. Disjoncteur à gaz comprimé selon la revendication 10, caractérisé en ce que le bord libre de la portion cylindrique (22, 24) dépasse au-delà du tube à paroi mince (46).
12. Disjoncteur à gaz comprimé selon la revendication 1, caractérisé en ce que la portion cylindrique (22, 24) du capuchon de déviation (16) associé au jeu de contacts fixes comporte deux sortes de nervures supports (25, 32) saillant vers l'intérieur, dont les unes portent le contact d'arc fixe (33) et les autres le contact de courant nominal fixe (28).
13. Disjoncteur à gaz comprimé selon l'une des revendications précédentes, caractérisé en ce que les languettes (41, 42, 75, 76) sont inclinées sur l'axe de la portion cylindrique (22, 24, 73) à la façon des pales d'une roue de ventilateur.
EP82106449A 1981-09-30 1982-07-17 Disjoncteur à gaz comprimé Expired EP0075668B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH629781 1981-09-30
CH6297/81 1981-09-30

Publications (3)

Publication Number Publication Date
EP0075668A2 EP0075668A2 (fr) 1983-04-06
EP0075668A3 EP0075668A3 (en) 1985-01-09
EP0075668B1 true EP0075668B1 (fr) 1987-01-07

Family

ID=4307337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106449A Expired EP0075668B1 (fr) 1981-09-30 1982-07-17 Disjoncteur à gaz comprimé

Country Status (4)

Country Link
US (1) US4471187A (fr)
EP (1) EP0075668B1 (fr)
JP (1) JPS5871523A (fr)
DE (1) DE3275041D1 (fr)

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IT8420810V0 (it) * 1984-02-10 1984-02-10 Sace Spa Sistema di contatti d'arco per interruttori elettrici, particolarmente a fluido d'estinzione dell'arco.
DE3904148A1 (de) * 1989-02-07 1990-08-09 Siemens Ag Metallgekapselter druckgas-leistungsschalter mit einem schaltgestaenge
DE3904146A1 (de) * 1989-02-07 1990-08-09 Siemens Ag Metallgekapselter druckgas-leistungsschalter mit einem schaltgestaenge
FR2644624B1 (fr) * 1989-03-17 1996-03-22 Merlin Gerin Disjoncteur electrique a autoexpansion et a gaz isolant
DE69527950T2 (de) * 1994-04-05 2003-01-02 Abb Power T & D Co. Inc., Raleigh Bewegbare gasmischplatte für autopneumatischen druckgasschalter
JP2910582B2 (ja) * 1994-10-31 1999-06-23 日新電機株式会社 電力用ガス遮断器
FR2760890B1 (fr) * 1997-03-17 1999-04-16 Gec Alsthom T & D Sa Deflecteur pour appareil electrique sous enveloppe metallique, en particulier pour disjoncteur haute tension
DE19832709C5 (de) 1998-07-14 2006-05-11 Siemens Ag Hochspannungsleistungsschalter mit einer Unterbrechereinheit
DE19928080C5 (de) * 1999-06-11 2006-11-16 Siemens Ag Hochspannungsleistungsschalter mit einem Abströmkanal
DE10156535C1 (de) * 2001-11-14 2003-06-26 Siemens Ag Leistungsschalter
DE10221576B4 (de) * 2002-05-08 2006-06-01 Siemens Ag Elektrisches Schaltgerät mit einer Kühleinrichtung
EP1403891B2 (fr) † 2002-09-24 2016-09-28 ABB Schweiz AG Disjoncteur
DE502004004571D1 (de) * 2004-06-07 2007-09-20 Abb Technology Ag Leistungsschalter
CN101120423B (zh) † 2004-12-24 2010-06-23 Abb技术有限公司 具有改进的断流容量的发电机开关
ATE458259T1 (de) * 2005-09-26 2010-03-15 Abb Technology Ag Hochspannungsschalter mit verbesserter schaltleistung
FR2896083B1 (fr) * 2006-01-06 2009-07-10 Areva T & D Sa Echappement de gaz pour disjoncteur
EP1835520B2 (fr) 2006-03-14 2013-12-18 ABB Technology AG Chambre d'interruption pour interrupteur haute tension isolé à gaz
FR2954995B1 (fr) * 2010-01-04 2012-09-28 Areva T & D Sas Disjoncteur a gaz utilisant un dispositif tournant favorisant le melange des gaz chauds et froids
EP2390890B1 (fr) * 2010-05-28 2015-03-25 ABB Technology AG Agencement d'isolation de chambre de commutation pour un commutateur de puissance
FR2962847B1 (fr) * 2010-07-16 2012-08-17 Areva T & D Sas Appareillage de chambre de coupure pour deux electrodes de contact confinees
DE102011083588A1 (de) * 2011-09-28 2013-03-28 Siemens Aktiengesellschaft Anordnung aufweisend eine Leistungsschalterunterbrechereinheit
DE102011083594A1 (de) * 2011-09-28 2013-03-28 Siemens Aktiengesellschaft Leistungsschalterunterbrechereinheit
DE102012202406A1 (de) * 2012-02-16 2013-08-22 Siemens Ag Schaltgeräteanordnung
DE102012202408A1 (de) * 2012-02-16 2013-08-22 Siemens Aktiengesellschaft Schaltgeräteanordnung
KR101613992B1 (ko) * 2014-04-09 2016-04-21 현대중공업 주식회사 가스절연 차단기
DE102016213158A1 (de) * 2016-07-19 2018-01-25 Siemens Aktiengesellschaft Schaltgeräteanordnung
ES2929798T3 (es) * 2017-06-29 2022-12-01 Abb Schweiz Ag Seccionador bajo carga aislado en gas y aparellaje que comprende un seccionador bajo carga aislado en gas
CN107464708B (zh) * 2017-09-27 2021-06-18 湖南长高电气有限公司 具有气体冷却通道的高压断路器
EP3503153B1 (fr) 2017-12-22 2021-09-01 ABB Power Grids Switzerland AG Disjoncteur haute ou moyenne tension isolé au gaz
EP3503152B1 (fr) * 2017-12-22 2020-10-14 ABB Power Grids Switzerland AG Disjoncteur haute ou moyenne tension isolé au gaz
DE102018219832A1 (de) 2018-11-20 2020-05-20 Siemens Aktiengesellschaft Unterbrechereinheit eines Leistungsschalters
FR3117665B1 (fr) * 2020-12-10 2023-04-14 Arianegroup Sas Dispositif de coupure à accroissement diélectrique

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FR1334851A (fr) * 1961-10-02 1963-08-09 Thomson Houston Comp Francaise Disjoncteur à soufflage de gaz équipé d'un pot d'échappement pour réduire le bruit
FR2266285A1 (en) * 1974-03-27 1975-10-24 Cem Comp Electro Mec Insulating gas contg. cct. breaker - has polyphase insulating casing with embedded current lead bolts coupled to casing metal lining
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JPS5438572A (en) * 1977-09-02 1979-03-23 Hitachi Ltd Buffer type gas circuit breaker
JPS5442660A (en) * 1977-09-09 1979-04-04 Hitachi Ltd Gas circuit breaker
CH643087A5 (en) * 1979-11-30 1984-05-15 Sprecher & Schuh Ag Gas-blast circuit breaker
JPH023237Y2 (fr) * 1980-01-10 1990-01-25

Also Published As

Publication number Publication date
JPS5871523A (ja) 1983-04-28
EP0075668A3 (en) 1985-01-09
US4471187A (en) 1984-09-11
DE3275041D1 (en) 1987-02-12
JPH0459726B2 (fr) 1992-09-24
EP0075668A2 (fr) 1983-04-06

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