EP0660354B1 - Enveloppe pour interrupteur sous vide - Google Patents

Enveloppe pour interrupteur sous vide Download PDF

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Publication number
EP0660354B1
EP0660354B1 EP94120029A EP94120029A EP0660354B1 EP 0660354 B1 EP0660354 B1 EP 0660354B1 EP 94120029 A EP94120029 A EP 94120029A EP 94120029 A EP94120029 A EP 94120029A EP 0660354 B1 EP0660354 B1 EP 0660354B1
Authority
EP
European Patent Office
Prior art keywords
switching chamber
housing
stalk
opening
contact piece
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
EP94120029A
Other languages
German (de)
English (en)
Other versions
EP0660354A2 (fr
EP0660354A3 (fr
Inventor
Dietmar Gentsch
Joseph H.F.G. Lipperts
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
Priority claimed from DE4431067A external-priority patent/DE4431067A1/de
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0660354A2 publication Critical patent/EP0660354A2/fr
Publication of EP0660354A3 publication Critical patent/EP0660354A3/fr
Application granted granted Critical
Publication of EP0660354B1 publication Critical patent/EP0660354B1/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
    • H01H33/66238—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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings
    • 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
    • H01H2033/66223—Details relating to the sealing of vacuum switch housings
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations

Definitions

  • the invention relates to a vacuum interrupter according to the preamble of claim 1 (US-A-4 880 947).
  • a vacuum interrupter of the type mentioned initially usually has a tubular body made of ceramic lier, on the front ends of which metal end caps are attached. The attachment is carried out by soldering, the end faces of the tubular insulating body being metallized beforehand.
  • a fixed and a movable contact piece are provided, each of which is attached to a stem, which grips through the cover in a vacuum-tight manner, a metallic bellows permitting the movement of the stem being arranged between one of the covers and the stem of the movable contact piece.
  • Such a vacuum interrupter has a relatively large volume.
  • the different coefficients of use of metal and ceramics produce solutions that should not be neglected due to the large construction volume.
  • the object of the invention is to provide a vacuum interrupter of the type mentioned, in which the construction volume is reduced and the number of parts required for closing the vacuum interrupter is reduced.
  • the electrical dielectric strength in air or an insulating gas, for. B. SF 6 can be increased.
  • the insulating body comprises at least one pot-shaped or cup-shaped partial element, the bottom of which is drawn radially inwards and there in each case has a small opening through which the holding rods or stems for the fixed and the movable contact piece are passed. The transition from the bottom to the cylindrical section is arched.
  • the arc shape is determined by the fact that the arc runs as parallel as possible to the curved electrical field lines. Based on the shape of the electrodes and the screen geometry, the structure of the electric field is known by known methods, eg. B. calculated by the Liebmann method. The structure determined in this way is decisive for the shape of the ceramic body, in particular for the arch shape.
  • This arc shape is approximated by a body of revolution of the conic sections or by a combination of sections from the inside, for example by an elliptical, parabolic or a hyperbolic form. The equipotential lines are then perpendicular to the surface of the arcuate sections.
  • each housing part can be provided in a cup shape with a radially inwardly drawn bottom.
  • the two housing parts are then firmly connected with their free end faces in opposite directions, for example soldered.
  • the bellows can be connected to the adjacent housing by means of a fastening ring attached to the outer surface of the base.
  • the bellows with its free end adjacent to its free end, can be fastened to the inner surface of the bottom of the adjacent housing part, preferably with the interposition of a solder foil.
  • the stem holding the fixed contact piece can have a radially projecting rim with which it is struck against the outer surface of the base and the housing part and is fastened thereto by means of a solder foil.
  • a centering section can be provided on the side of the stem which holds the fixed contact piece and which closes the rim, the outside diameter of the centering section corresponding to the inside diameter of the opening.
  • the bellows can have an extension which extends through the opening on the housing part and is dimensioned such that it protrudes from the opening.
  • a mounting ring is provided for the mounting, which is soldered to the bottom surface on the outside of the housing part and to the section of the extension protruding from the opening and attached to it in a vacuum-tight manner.
  • a vacuum interrupter 10 has an interrupter housing 11, which is composed of two housing parts 12 and 13.
  • the housing parts 12 and 13 are connected to one another at their mutually facing end faces 14 and 15 with the interposition of an annular web 16 which projects radially inward beyond the inner surface of the housing parts 12 and 13.
  • a solder foil is provided between the ring web 16 and the end faces 14 and 15 (not shown) and the end faces 14 and 15 are metallized.
  • an umbrella cylinder 17 is fastened, the free ends 18 and 19 of which are bent in a U-shape.
  • the housing parts 12 and 13 have at the ends opposite the end faces 14 and 15 a radially inwardly drawn housing base 20 and 21, each of which encloses an opening 22 and 23, with the opening 22 and / or on the respective outer surfaces of the housing bases 20 and 21 23 enclosing shoulder-shaped, axial projection 24 and 25 is formed.
  • the shield can be fastened in the switching chamber housing 11 in any other way. This is of little importance for the invention.
  • a stem 26 (also called a holding rod 26) extends through the opening 22 and a fixed contact piece 27 is attached to its inner end.
  • a further stem 28 (also called a holding rod 28) extends through the opening 23 and a movable contact piece 29 is attached to its inner end.
  • the stem 26 has a radially projecting rim 30, the outer diameter of which is larger than the inner diameter of the opening 23. With this rim 30, the stem 26 is placed from the outside against the projection 25 and fastened thereto by means of a soldering foil 31. The free, outer surface of the projection 25 is metallized. A centering strip 32 adjoins the rim 30, the outside diameter of which corresponds to the inside diameter of the opening 22. By soldering the rim 30, the opening 22 is closed vacuum-tight. This also ensures a good mechanically resilient attachment of the stem 26 to the housing part 12. An annular shaped body 52 made of metal is provided on the inside, which is fastened to the stem 26 and reinforces the ceramic-metal connection of the stem 26 on the housing part 11.
  • the attachment is carried out by means of a soldering ring, not shown, provided between the stem 26 and the shaped body 52, the distance between the rim 30 and the shaped body 52 being reduced after the solder has solidified and cooled, so that a kind of shrink-on effect occurs through which the base region is pressed around the opening 22 between the molded body 52 and the rim 30.
  • a fastening ring 33 with an approximately L-shaped cross section is fastened to the likewise metallized free outer end face of the projection 24 with the interposition of a soldering foil 34, the fastening ring 33 having a cylindrical section 35 and a radially extending section Has collar 36; the cylindrical section 35 extends through the opening 23 and the radial collar 36 is fastened to the projection 24 with the interposition of the soldering foil 34.
  • a cylindrical collar 37 of a bellows 38 engages in the cylindrical section 25, the end of the bellows 38 located within the vacuum interrupter chamber 10 and also having a cylindrical collar 39 is fastened to a thickening 40 of the stem 28.
  • connection between the collar 37 and the cylindrical section 35 of the fastening ring 33 is made by welding; the cylindrical collar 39 of the bellows is also fastened to the thickening 40 by welding.
  • soldering can also be possible here.
  • the soldered connection between the radial collar 36 and the projection 24, the cylindrical collar 37 and the cylindrical section 35 and the cylindrical collar 39 and the thickening 40 also produces a vacuum-tight connection and seal here.
  • the bottoms 20 and 21 are connected to the cylinder wall 41 and 42 of the housing parts 12 and 13 via an arcuate section 43 and 44.
  • a side flank 51 of the bellows 38 is fastened to the inner surface 50 adjoining the opening 23, the cylindrical collar 37 engaging as a centering in the interior of the opening 23.
  • this inner surface area 50 is metallized and connected to the side flank 51 of the bellows 38 by means of a soldering foil, not shown.
  • the attachment of the bellows 28 is as shown in Fig. 1.
  • the fastening ring 33 of the embodiment according to FIG. 1 is additionally saved.
  • an axial extension 53 is provided instead of a short extension, which extends through the opening 23 and protrudes on the outside of the opening of the housing part 13.
  • a ring 54 is placed on the outside of the projection 24, a solder foil being provided between the ring 54 and the projection 24.
  • the inner surface of the ring 54 surrounds the extension 53 outside the opening 23, also with the interposition of solder, not shown.
  • the ring 54 which is made of metal, is fastened to the housing part 13 and to the extension 53. It goes without saying that the outer surface of the projection 24 has been metallized beforehand.

Landscapes

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

Claims (7)

  1. Chambre de coupure dans le vide (10) comprenant une enveloppe de chambre de coupure (11) sensiblement cylindrique, en matière isolante, de préférence en matière céramique, dans laquelle pénètrent à une extrémité axiale une tige (26) portant une pièce de contact fixe (27) et à l'autre extrémité axiale une tige (28) portant une pièce de contact mobile (29), et un soufflet à plis (38) qui est disposé sur l'enveloppe de chambre de coupure (11) en étant fixé d'une part à l'enveloppe de chambre de coupure (11) et d'autre part à la tige (28) pour la pièce de contact mobile (29), en entourant cette tige, au moins une extrémité de l'enveloppe de chambre de coupure présentant un fond (20, 21) s'étendant radialement vers l'intérieur pour entourer une ouverture (23, 22) à travers laquelle la tige respective (26, 28) pénètre vers l'intérieur, caractérisée par le fait que le fond (20, 21) s'étendant radialement vers l'intérieur se raccorde en forme d'arc à la section cylindrique de telle manière que l'arc s'étende sensiblement parallèlement aux lignes de champ incurvées.
  2. Chambre de coupure dans le vide suivant la revendication 1, dans laquelle l'enveloppe de chambre de coupure est composée de deux moitiés d'enveloppe divisées axialement, caractérisée par le fait que chaque partie d'enveloppe (12, 13) est en forme de godet avec un fond (20, 21) tourné radialement vers l'intérieur et que les deux parties d'enveloppe (12, 13) sont reliées solidement entre elles, leurs surfaces frontales libres (14, 15) étant tournée l'une vers l'autre.
  3. Chambre de coupure dans le vide suivant l'une des revendications 1 et 2, caractérisée par le fait que le soufflet à plis (38) est fixé à l'aide d'un anneau de fixation rapporté sur la surface extérieure du fond (21) de façon étanche au vide à la partie d'enveloppe (13) voisine.
  4. Chambre à coupure dans le vide suivant l'un des revendications 1 et 2, caractérisée par le fait que le soufflet à plis (38) est fixé par son flanc latéral (51) voisin de son extrémité libre à la surface intérieure du fond (21) de la partie d'enveloppe voisine, de préférence avec une feuille de soudure intercalaire.
  5. Chambre de coupure dans le vide suivant l'une des revendications précédentes, caractérisée par le fait que la tige (26) portant la pièce de contact fixe (27) présente un rebord radial (30) par lequel elle porte contre la surface extérieure du fond (20) de la partie d'enveloppe (12) et est fixée à l'aide d'une feuille de soudure (31) à cette surface.
  6. Chambre à coupure clans le vide suivant la revendication 5, caractérisée par le fait que la tige (26) portant la pièce de contact fixe (27) présente, sur le côté tourné vers la pièce de contact fixe (27), une section de centrage (32) qui se raccorde au rebord (30) et dont le diamètre extérieur correspond au diamètre intérieur de l'ouverture (22).
  7. Chambre à coupure clans le vide suivant la revendication 3, caractérisée par le fait que le soufflet à plis (38) présente un prolongement (53) qui traverse l'ouverture (23) de la partie d'enveloppe (13) et fait saillie hors de l'ouverture (23), et qu'il est prévu un anneau de fixation (54) qui est soudé et est fixé de façon étanche au vide au côté extérieur de la partie d'enveloppe (13) et à la section du prolongement (53) faisant saillie hors de l'ouverture.
EP94120029A 1993-12-24 1994-12-17 Enveloppe pour interrupteur sous vide Expired - Lifetime EP0660354B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4344536 1993-12-24
DE4344536 1993-12-24
DE4431067 1994-09-01
DE4431067A DE4431067A1 (de) 1993-12-24 1994-09-01 Vakuumschaltkammer

Publications (3)

Publication Number Publication Date
EP0660354A2 EP0660354A2 (fr) 1995-06-28
EP0660354A3 EP0660354A3 (fr) 1996-03-27
EP0660354B1 true EP0660354B1 (fr) 1997-11-19

Family

ID=25932537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120029A Expired - Lifetime EP0660354B1 (fr) 1993-12-24 1994-12-17 Enveloppe pour interrupteur sous vide

Country Status (3)

Country Link
US (1) US5510592A (fr)
EP (1) EP0660354B1 (fr)
JP (1) JPH07254330A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025545A1 (fr) 2006-09-01 2008-03-06 Abb Technology Ag Chambre de coupure sous vide pour installations électriques moyenne tension

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001222935A (ja) * 2000-02-08 2001-08-17 Toshiba Corp 真空開閉装置
EA012475B1 (ru) * 2008-05-30 2009-10-30 Юрий Иосифович Смирнов Вакуумная дугогасительная камера
US8248760B2 (en) * 2010-07-07 2012-08-21 Eaton Corporation Switch arrangement for an electrical switchgear
US8674254B2 (en) 2011-01-31 2014-03-18 Thomas & Betts International, Inc. Flexible seal for high voltage switch
EP3163594A1 (fr) 2015-10-26 2017-05-03 ABB Schweiz AG Interrupteur à vide avec un contact mobile
DE102017222406A1 (de) * 2017-12-11 2019-06-13 Siemens Aktiengesellschaft Vakuumschaltröhre
DE102021200785A1 (de) * 2021-01-28 2022-07-28 Siemens Aktiengesellschaft Vakuumschaltröhre

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965734A (en) * 1958-08-07 1960-12-20 Allis Chalmers Mfg Co Current conductive spring bearing for vacuum switch contacts
NL6501138A (fr) * 1965-01-29 1966-08-01
DE1765595A1 (de) * 1968-06-15 1971-08-05 Siemens Ag Vakuumschalter
JPS56156626A (en) * 1980-05-06 1981-12-03 Meidensha Electric Mfg Co Ltd Vacuum breaker
US4499349A (en) * 1981-11-20 1985-02-12 Kabushiki Kaisha Meidensha Vacuum interrupter
JPS59214122A (ja) * 1983-05-20 1984-12-04 株式会社明電舎 真空インタラプタ
DE3327390A1 (de) * 1983-07-29 1985-02-07 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltroehre, insbesondere fuer einen niederspannungsschuetz
DE3718108A1 (de) * 1987-05-27 1988-12-08 Slamecka Ernst Vakuumschalter
DE3718531A1 (de) * 1987-05-29 1988-08-11 Slamecka Ernst Vakuumschalter
US4757166A (en) * 1987-06-15 1988-07-12 Westinghouse Electric Corp. Vacuum interrupter with ceramic enclosure
DE3887725T2 (de) * 1987-09-29 1994-09-01 Mitsubishi Electric Corp Vakuum-Entladevorrichtung.
US4880947A (en) * 1988-06-29 1989-11-14 Westinghouse Electric Corp. Vacuum interrupter with simplified enclosure and method of assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008025545A1 (fr) 2006-09-01 2008-03-06 Abb Technology Ag Chambre de coupure sous vide pour installations électriques moyenne tension
DE102006041149A1 (de) * 2006-09-01 2008-03-13 Abb Technology Ag Vakuumschaltkammer für Mittelspannungsschaltanlagen
DE102006041149B4 (de) * 2006-09-01 2008-09-04 Abb Technology Ag Vakuumschaltkammer für Mittelspannungsschaltanlagen
CN101523536B (zh) * 2006-09-01 2013-10-23 Abb技术股份公司 用于中压开关设备的真空开关箱

Also Published As

Publication number Publication date
EP0660354A2 (fr) 1995-06-28
JPH07254330A (ja) 1995-10-03
US5510592A (en) 1996-04-23
EP0660354A3 (fr) 1996-03-27

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