EP0354445B1 - Chambre de coupure d'un interrupteur à vide - Google Patents

Chambre de coupure d'un interrupteur à vide Download PDF

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Publication number
EP0354445B1
EP0354445B1 EP89114173A EP89114173A EP0354445B1 EP 0354445 B1 EP0354445 B1 EP 0354445B1 EP 89114173 A EP89114173 A EP 89114173A EP 89114173 A EP89114173 A EP 89114173A EP 0354445 B1 EP0354445 B1 EP 0354445B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact pin
fixed
face
end part
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
EP89114173A
Other languages
German (de)
English (en)
Other versions
EP0354445A3 (en
EP0354445A2 (fr
Inventor
Karl Dipl.-Ing. Stegmüller
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.)
Schneider Electric Sachsenwerk GmbH
Original Assignee
Sachsenwerk AG
AEG Sachsenwerk 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 Sachsenwerk AG, AEG Sachsenwerk GmbH filed Critical Sachsenwerk AG
Publication of EP0354445A2 publication Critical patent/EP0354445A2/fr
Publication of EP0354445A3 publication Critical patent/EP0354445A3/de
Application granted granted Critical
Publication of EP0354445B1 publication Critical patent/EP0354445B1/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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • 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

Definitions

  • the invention relates to a switching chamber of a vacuum switch according to the preamble of the claim.
  • a known switching chamber of this type (DE-A-20 07 676) encloses in a housing having an insulating tube, a fixed contact on a fixed contact bolt, which engages centrally through a disk-shaped end piece.
  • This end piece is shaped in the manner of a half-wave in the outer edge region and is butt-soldered with its outer cut edge end to the end face of the insulating tube.
  • the inner cut edge end of the end part is fastened to the outer surface of the fixed contact bolt which carries the switching chamber.
  • the fixed contact is opposed by a movable contact, which is also fixed to a contact pin, which is connected in a vacuum-tight manner to the other end of the insulating tube by means of a bellows and an end cover.
  • the movable contact touches the stationary contact under the force of a contact force spring.
  • the end part on the fixed contact pin is additionally provided with an outer membrane cover, so that this end part forms a hollow end plate.
  • An elastomeric material such as rubber, polyurethane or the like, is filled into the cavity formed in this way, which dampens shocks and reduces bumping phenomena which occur when the device is switched on.
  • the outer membrane cover serves to stiffen the end part, to which the filling material in the cavity also contributes. In practical operation, therefore, considerable forces are still transmitted to the insulating tube via the end plate, which in particular means that small-area connection point between the end part and the insulating tube is mechanically heavily loaded.
  • the invention has for its object to take measures in a control chamber according to the preamble of the claim, by means of which elastic deformations and the associated stresses remain limited to low values.
  • the end part is an elastic component due to its deformation that has at least one whole shaft, despite its low spring constant. If correspondingly large vibrations occur, the resulting forces are not intercepted by the end part on the fixed contact bolt alone, but also by the buffer arranged there, which then interacts directly with the ceramic tube. It is thus possible to largely mechanically decouple the housing, as a result of which the shock loads acting on the fixed contact, especially when it is switched on, are not or only to a small extent transferred to the components and connection points of the housing.
  • the selected version is also insensitive to the forces acting in the case of large short-circuit currents in multi-phase networks in the lateral direction to the axis of the switching chamber.
  • the switching chamber consists of a movable contact 1, and a stationary contact 2, the stationary contact pin 3 of which is connected to a crossbar 7 via a screw connection 11 according to FIG.
  • the contacts 1, 2 are surrounded by a housing which consists of two ceramic tubes 5a, 5b and an intermediate jacket tube 6 made of metal.
  • the housing is connected to the fixed contact pin 3 via the end part 4.
  • the chamber is closed in a vacuum-tight manner by an end cover 16 and a bellows 17.
  • a guide bush 8 supports the contact pin 1 a of the movable contact 1.
  • the guide bush 8 is mounted in the support body 9.
  • FIG. 2 shows an embodiment of the end part 4 with a cross section in the form of a simple shaft.
  • the end part 4 is fastened with its outer cut edge end 4a to the end face 14 of the ceramic tube 5, while it is also fastened with its end face to the outer surface 12 of the contact bolt 3 at the inner cut edge end 4b.
  • a multi-shaft end part 4 is shown especially for switching chambers with a large diameter.
  • the connection points are subject to the same criteria as in FIG. 2. It is particularly advantageous if the length of the neutral fiber of the End part is at least 1.5 times longer than the linear distance a between the outer fastening parts and the lateral surface 12 of the contact bolt 3. Such a design also allows forces acting in the lateral or twisting direction to be absorbed on the fixed contact 2 without endangering the housing.
  • the end part 4 not only has a wavy shape, but that it is attached with the end face to the connecting pieces 5a and 3, respectively.
  • the shrinkage stresses which arise due to the different thermal expansion coefficients of the ceramic material and the material for the end part can be kept within low limits. These shrinkage stresses decrease with the ratio of the thicknesses s of the end part 4 to the thickness t of the ceramic tube 5a.
  • the frontal attachment to both ends of the end part 4 means a certain flexibility of the same. Due to this articulation, the spring constant of the end part 4 is lower than with a fastening which corresponds to a rigid clamping.
  • the attachment of the end part 4 with the contact pin 3 also secures the under asymmetric loads large short-circuit currents possible adjustment forces in the sense of a slight rotation of the contact bolt around the end part 4.
  • the end part 4 is an elastic component despite its low spring constant. So that the housing does not swing up and down due to slight vibrations, an elastic support ring 15 is arranged without a gap between the guide bushing 8 and the support body 9.
  • a buffer 10 is arranged around the fixed contact pin, against which the housing can preferably strike with the outer edge of the ceramic tube 5a in the event of elastic deflections. Such elastic deformations are limited by this buffer and thus ensure that the associated stresses remain limited to low values.

Landscapes

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

Claims (1)

  1. Chambre de commutation d'un interrupteur à vide avec un coffret présentant au moins un tube isolant (5a, 5b), avec un contact stationnaire (2) sur un boulon de contact (3) qui porte la chambre de commutation par l'intermédiaire d'une pièce d'obturation (4) ondulée qui est fixée par l'extrémité extérieure (4a) de l'arête de coupe à la face frontale (14) du tube isolant (5a, 5b) et avec l'extrémité inférieure (4b) de l'arête de coupe à la surface d'enveloppe (12) de ce boulon de contact 3, avec un contact mobile (1) sur un boulon de contact (1a) qui est relié, de manière étanche au vide, par un soufflet (17) et un couvercle d'obturation (16), au tube isolant (5a, 5b), le contact mobile (1) en position enclenchée touchant, par la face frontale sous la force d'un ressort de contact, le contact stationnaire (2), et avec des moyens amortisseurs de chocs dans la zone de la pièce d'obturation ondulée (4), caractérisée en ce que la pièce d'obturation (4) dispose au moins d'une ondulation entière, que le boulon de contact (1a) du contact mobile (1) est guidé dans une douille (8) qui est logée dans un corps d'appui (9), qu'entre la douille (8) et le corps d'appui (9), il est inséré une bague d'appui (15) élastique sans interstice et qu'il est disposé, autour du boulon de contact (3) du contact stationnaire (2), un tampon (10) qui coopère avec la surface frontale voisine (14) du tube céramique (5) de manière que la surface frontale (14) bute contre le tampon (10) en cas de déviation élastique.
EP89114173A 1988-08-06 1989-08-01 Chambre de coupure d'un interrupteur à vide Expired - Lifetime EP0354445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8810063U 1988-08-06
DE8810063U DE8810063U1 (de) 1988-08-06 1988-08-06 Schaltkammer eines Vakuumschalters

Publications (3)

Publication Number Publication Date
EP0354445A2 EP0354445A2 (fr) 1990-02-14
EP0354445A3 EP0354445A3 (en) 1990-12-12
EP0354445B1 true EP0354445B1 (fr) 1994-12-28

Family

ID=6826715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114173A Expired - Lifetime EP0354445B1 (fr) 1988-08-06 1989-08-01 Chambre de coupure d'un interrupteur à vide

Country Status (4)

Country Link
US (1) US4983793A (fr)
EP (1) EP0354445B1 (fr)
JP (1) JPH0282418A (fr)
DE (2) DE8810063U1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825407A1 (de) * 1988-07-27 1990-02-01 Sachsenwerk Ag Schaltkammer eines vakuumschalters
US6867385B2 (en) * 2003-02-21 2005-03-15 Mcgraw-Edison Company Self-fixturing system for a vacuum interrupter
EP1760743A1 (fr) * 2005-09-02 2007-03-07 ABB Research Ltd Disjoncteur à vide avec un contact mobile monté en rotation
FR2951314A1 (fr) * 2009-10-12 2011-04-15 Schneider Electric Ind Sas Dispositif d'assemblage par brasage d'un capot d'extremite sur un corps cylindrique et ampoule a vide comportant un tel dispositif
CN104330733A (zh) * 2014-11-21 2015-02-04 西安伯龙高铁电气有限公司 列车车顶绝缘检测装置
KR102545133B1 (ko) * 2016-04-05 2023-06-19 엘에스일렉트릭(주) 진공 차단기의 진공 인터럽터
JP7004027B2 (ja) * 2020-06-18 2022-01-21 株式会社明電舎 真空インタラプタおよび真空遮断器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082307A (en) * 1959-04-30 1963-03-19 Gen Electric Vacuum type circuit interrupter
FR2038481A6 (fr) * 1968-04-29 1971-01-08 Inst Prueffeld Elekt
US3657502A (en) * 1969-03-27 1972-04-18 Westinghouse Electric Corp Deflecting end-plate construction for vacuum-type circuit interrupters
JPS56156626A (en) * 1980-05-06 1981-12-03 Meidensha Electric Mfg Co Ltd Vacuum breaker
US4478347A (en) * 1981-01-23 1984-10-23 Westinghouse Electric Corp. Unitary end closure and seal shield member for vacuum interrupter
DE8212546U1 (de) * 1982-04-30 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltröhre
DE3501603A1 (de) * 1984-02-02 1985-08-01 Westinghouse Electric Corp., Pittsburgh, Pa. Niederspannung-hochfrequenz-vakuumschalter

Also Published As

Publication number Publication date
EP0354445A3 (en) 1990-12-12
DE8810063U1 (de) 1988-09-29
JPH0282418A (ja) 1990-03-23
US4983793A (en) 1991-01-08
DE58908824D1 (de) 1995-02-09
EP0354445A2 (fr) 1990-02-14

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