EP0568166B1 - Tube interrupteur à vide - Google Patents

Tube interrupteur à vide Download PDF

Info

Publication number
EP0568166B1
EP0568166B1 EP93250100A EP93250100A EP0568166B1 EP 0568166 B1 EP0568166 B1 EP 0568166B1 EP 93250100 A EP93250100 A EP 93250100A EP 93250100 A EP93250100 A EP 93250100A EP 0568166 B1 EP0568166 B1 EP 0568166B1
Authority
EP
European Patent Office
Prior art keywords
contact
insulator
contact pieces
switching tube
vacuum
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
EP93250100A
Other languages
German (de)
English (en)
Other versions
EP0568166A3 (fr
EP0568166A2 (fr
Inventor
Jörg Dipl.-Ing. Kusserow
Roman Dr.Dipl.-Phys. Renz
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0568166A2 publication Critical patent/EP0568166A2/fr
Publication of EP0568166A3 publication Critical patent/EP0568166A3/xx
Application granted granted Critical
Publication of EP0568166B1 publication Critical patent/EP0568166B1/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details

Definitions

  • the invention is in the field of power distribution and is applicable to the design of a vacuum interrupter according to the preamble of claim 1, in which the switch contacts are directly surrounded by an insulating housing part, see e.g. GB-A-1 196 121.
  • Vacuum switches are used, which essentially consist of a vacuum interrupter as the actual switching element and a drive device, the axially movable contact piece of the vacuum interrupter being firmly coupled to the drive device.
  • the drive device is designed so that within the vacuum interrupter - depending on the switching voltage - there is a certain contact stroke in the range between about 1 to 20 mm (brochure "Medium Voltage / Vacuum Switching Technology" from Siemens AG, No. A 19 100-E 769-B 162, page 8).
  • vacuum interrupters in which the housing in the area of the contact pieces consists of a metallic hollow cylinder, which directly surrounds the contacts and to which hollow cylindrical insulators, usually made of ceramic, are soldered (DE 19 15 198), vacuum interrupters are also common, whose cylindrical housing part consists of one or two axially adjacent insulators and in which a hollow cylindrical metal shield is provided to protect the inner wall of the insulator against the precipitation of metal vapor.
  • This metal screen surrounds the contact pieces directly at a distance and is either on the insulator or attached to the interface of two insulators or to one of the two end plates of the housing (DE 25 35 150, DE 26 12 129, DE 27 25 092).
  • the invention has for its object to design the vacuum interrupter so that the insulating ability of the insulator is safely maintained without using a metal screen.
  • the invention provides that the radial distance of the insulator from the contact pieces is less than or at most equal to the contact stroke.
  • the insulator is only vaporized in a limited area.
  • the remaining unevaporated surface areas of the insulator are sufficient to maintain the required insulating capacity.
  • the vaporization of the insulator only in the area of the contact pieces can be limited in particular in the case of breaking currents in the range 12 to 25 kA by the fact that the contact pieces are designed as axial magnetic field contacts.
  • Vacuum interrupters designed according to the invention can be used in particular for vacuum interrupters which are operated in the lower power range and thus short-circuit currents up to max. 25 kA have to be switched and where it is foreseeable due to the operating conditions that they only have to withstand a small number of short-circuit current interruptions during their service life.
  • the insulator is only vaporized in a limited area, it is advisable to narrow the free cross section between the respective contact pin and the insulator in the area between the contact pieces and one or both end plates.
  • This narrowing can take place, for example, by means of a disk or by means of a plate-like part which is fastened to one or both contact bolts or to the bottom of one or both contact pieces. It is advantageous if the free cross section is narrowed to a gap width that is less than or at most equal to half the contact stroke.
  • the vacuum interrupter according to FIG. 1 has, in a manner known per se, a housing which consists of the hollow cylindrical ceramic insulator 11, the two metal end plates 12 and 13 and the bellows 14.
  • the two contact pieces 15 and 16 are arranged within the housing, the contact pins 17 and 18 of which are guided outwards and are soldered to the end plate 12 or the bellows 14 in a vacuum-tight manner.
  • the insulator 11 has a radial distance a from the contact pieces 15 and 16, which can be radial field or axial magnetic field contacts, which is chosen to be smaller than the nominal switching stroke of the axially movable contact piece 16.
  • the contact stroke of the movable switching contact 5 is about 14 mm.
  • the housing of the vacuum interrupter 10 also consists of a hollow cylindrical ceramic insulator 11, the two metal end plates 12 and 13 and the bellows 14. Inside the housing, the two contact pieces 15 and 16 are arranged, the contact pins 17 and 18 are guided to the outside.
  • the contact pieces 15 and 16 are pot contacts known per se, which are designed as axial magnetic field contacts by means of the slit provided. Instead of pot contacts (eg EP-0 155 376), other axial magnetic field contacts (eg DE 24 43 141) can also be used.
  • the inside diameter of the ceramic insulator 11 is chosen so that the radial distance a of the switching contacts 15/16 from the insulator 11 is less than or at most equal to the nominal switching stroke of the contact 16.
  • - Plate-like parts 19 and 20 are further soldered to the bottom of the contact pieces 15 and 16, which narrow the free cross section in the rear area of the two contacts 15 and 16 to a radial gap, the gap width b of which is less than or equal to half the nominal contact stroke of the Switch contact 16 is.
  • the radial distance between the two switching contacts 15 and 16 from the insulator 21 is also chosen to be smaller or at most equal to the nominal contact stroke.
  • the centering disk 22 for the bellows 14 is expanded radially, so that the remaining gap width is at most equal to half the contact stroke.
  • the ceramic insulator 21 is narrowed by an annular extension 23 to such an extent that the adjacent wall area of the insulator is securely shaded up to the end plate 12.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Claims (5)

  1. Tube interrupteur à vide, à la pièce de contact (16) mobile axialement duquel est associée une course de contact déterminée et dont le boîtier cylindrique entourant les pièces de contact (15, 16) comporte au moins un isolateur (11, 21) en forme de cylindre creux et deux plaques d'extrémité (12, 13) métalliques prévues sur les côtés frontaux, les pièces de contact étant entourées directement de l'isolateur,
    caractérisé
    en ce que la distance (a) radiale de l'isolateur (11) aux pièces de contact (15, 16) est inférieure ou au plus égale à la course de contact.
  2. Interrupteur à vide suivant la revendication 1,
    caractérisé
    en ce que les pièces de contact (15, 16) revêtent la forme de pièces de contact à champ magnétique axial.
  3. Interrupteur à vide suivant la revendication 1 ou 2,
    caractérisé
    en ce que dans la région comprise entre les pièces de 5 contact (15, 16) et une plaque d'extrémité ou les deux plaques d'extrémité (12, 13), la section transversale libre comprise entre les axes de contact (17, 18) et l'isolateur (11) est rétrécie par un disque ou par une pièce (19, 20) en forme de plateau, qui est fixé à l'axe de contact ou au côté du fond de la pièce de contact.
  4. Interrupteur à vide suivant la revendication 3,
    caractérisé
    en ce que la section transversale libre est rétrécie à une largeur (b) d'intervalle qui est inférieure ou au plus égale à la moitié de la course de contact.
  5. Interrupteur à vide suivant la revendication 1 ou 2,
    caractérisé
    en ce que l'isolateur (21) comporte dans la région de l'arrière d'une ou des deux pièces de contact (15) un rebord (23) annulaire faisant saillie radialement vers l'intérieur.
EP93250100A 1992-04-29 1993-04-02 Tube interrupteur à vide Expired - Lifetime EP0568166B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4214550A DE4214550A1 (de) 1992-04-29 1992-04-29 Vakuumschaltroehre
DE4214550 1992-04-29
US08/055,123 US5313030A (en) 1992-04-29 1993-04-29 Vacuum switch

Publications (3)

Publication Number Publication Date
EP0568166A2 EP0568166A2 (fr) 1993-11-03
EP0568166A3 EP0568166A3 (fr) 1994-01-12
EP0568166B1 true EP0568166B1 (fr) 1996-12-27

Family

ID=25914491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250100A Expired - Lifetime EP0568166B1 (fr) 1992-04-29 1993-04-02 Tube interrupteur à vide

Country Status (3)

Country Link
US (1) US5313030A (fr)
EP (1) EP0568166B1 (fr)
DE (1) DE4214550A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9401655U1 (de) * 1993-06-18 1994-11-03 Siemens AG, 80333 München Vakuumschaltröhre mit ringförigem Isolator
KR100361390B1 (ko) * 1994-11-16 2003-02-19 이턴 코포레이션 진공차단기,진공차단기용접점코일조립체및원주전극코일의제조방법
US5777287A (en) * 1996-12-19 1998-07-07 Eaton Corporation Axial magnetic field coil for vacuum interrupter
DE10029763B4 (de) * 2000-06-16 2009-01-15 Siemens Ag Vakuumschaltröhre
JP3690979B2 (ja) * 2000-11-30 2005-08-31 日本特殊陶業株式会社 金属−セラミック接合体及びそれを用いた真空スイッチユニット
DE60223975T2 (de) * 2001-09-12 2008-11-27 Kabushiki Kaisha Meidensha Vakuumschalterkontakt und Vakuumschalter mit einem solchen Kontakt
JP3840934B2 (ja) * 2001-09-12 2006-11-01 株式会社明電舎 真空インタラプタ用接触子及び真空インタラプタ
DE102017222413A1 (de) * 2017-12-11 2019-06-13 Siemens Aktiengesellschaft Überdruckfeste Vakuumschaltröhre
US10796867B1 (en) 2019-08-12 2020-10-06 Eaton Intelligent Power Limited Coil-type axial magnetic field contact assembly for vacuum interrupter
DE102019216663B4 (de) * 2019-10-29 2023-02-02 Siemens Aktiengesellschaft Vakuumschaltvorrichtung für eine Schaltung mit Haupt- und Nebenstrompfad

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1196121A (en) * 1966-06-07 1970-06-24 Reyrolle A & Co Ltd Improvements relating to Vacuum Switches
GB1255223A (en) * 1969-03-11 1971-12-01 Mitsubishi Electric Corp Vacuum circuit interrupter
FR2279216A1 (fr) * 1973-09-10 1976-02-13 Tokyo Shibaura Electric Co Interrupteur a vide a champ magnetique
US3980850A (en) * 1974-12-19 1976-09-14 Westinghouse Electric Corporation Vacuum interrupter with cup-shaped contact having an inner arc controlling electrode
GB1504666A (en) * 1975-03-22 1978-03-22 Gemvac Kk Vacuum power interrupter and method of making the same
DE7524981U (de) * 1975-08-06 1978-08-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschaltrohr
DE2725092A1 (de) * 1977-06-03 1978-12-14 Bbc Brown Boveri & Cie Vakuumschalter
DE3302226C2 (de) * 1983-01-24 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung für Vakuumschalter
DE3407088A1 (de) * 1984-02-27 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
US4727228A (en) * 1984-09-28 1988-02-23 Siemens Aktiengesellschaft Contact arrangement for vacuum switches
DE8534022U1 (de) * 1985-12-03 1987-06-11 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltröhre
US4672156A (en) * 1986-04-04 1987-06-09 Westinghouse Electric Corp. Vacuum interrupter with bellows shield
DE3703326A1 (de) * 1987-02-04 1988-08-18 Siemens Ag Vakuumschaltroehre
DE3717864A1 (de) * 1987-05-26 1988-11-17 Slamecka Ernst Vakuumschalter
DE3832493A1 (de) * 1988-09-22 1990-03-29 Siemens Ag Vakuumschaltroehre, eine solche schaltroehre enthaltender lasttrennschalter und verfahren zum betrieb eines solchen lasttrennschalters
US5004877A (en) * 1988-10-03 1991-04-02 Square D Company Vacuum interrupter
DE58908842D1 (de) * 1989-07-28 1995-02-09 Siemens Ag Kontaktanordnung für eine Vakuumschaltröhre.

Also Published As

Publication number Publication date
EP0568166A3 (fr) 1994-01-12
DE4214550A1 (de) 1993-11-04
EP0568166A2 (fr) 1993-11-03
US5313030A (en) 1994-05-17

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