EP1571685B1 - Dispositif de fixation d'un écran dans un interrupteur électrique notamment un interrupteur à vide. - Google Patents

Dispositif de fixation d'un écran dans un interrupteur électrique notamment un interrupteur à vide. Download PDF

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Publication number
EP1571685B1
EP1571685B1 EP05354004A EP05354004A EP1571685B1 EP 1571685 B1 EP1571685 B1 EP 1571685B1 EP 05354004 A EP05354004 A EP 05354004A EP 05354004 A EP05354004 A EP 05354004A EP 1571685 B1 EP1571685 B1 EP 1571685B1
Authority
EP
European Patent Office
Prior art keywords
shield
ring
fixed
screen
insulators
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.)
Not-in-force
Application number
EP05354004A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1571685A1 (fr
Inventor
Roland Schneider Electric Insustries SAS Masnada
Olivier Schneider Electric Industries S Cardoletti
Albin Schneider Electric Industries SAS Henon
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1571685A1 publication Critical patent/EP1571685A1/fr
Application granted granted Critical
Publication of EP1571685B1 publication Critical patent/EP1571685B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations

Definitions

  • the present invention relates to a device for fixing a screen in a switch, said switch having an envelope comprising a cylindrical portion closed by two end portions forming covers, said envelope enclosing two contacts extending axially inside the the envelope of which at least one said movable contact is connected to a control mechanism and is slidably mounted between a closed position of the contacts and a position in which the contacts are separated and cause the interruption of an electrical circuit, said cylindrical portion being mechanically connected by its two free ends respectively to the two end caps and having one or more cylindrical insulator-forming parts mechanically and axially connected to each other, and at least one shield being supported by a cylindrical ring fixed between two of the aforesaid parts of the envelope connected mechanically at the level of the mechanical connection between these two parts.
  • These metal screens located inside the ceramic insulator (s) have the main role of protecting the ceramic part (s) from the condensation of metal vapors resulting from the arc phase produced between the contacts during the power failure.
  • the floating potential screen is connected to the isolator, either directly or through intermediate pieces.
  • the documents US 5,077,883 and EP 0 406 944 describe a screen connected to the isolator directly, by deforming the screen around a generally asymmetrical protrusion of the insulator.
  • the document EP 1 172 834 describes a screen connected to the insulator by an arrangement of intermediate parts, one of them being housed in a groove of the insulator provided for this purpose. This method of attachment substantially increases the complexity of the shape and cost of obtaining the insulator.
  • the screen thus mounted provides no electrical connection point to the outside to condition the voltage of the switch bulb.
  • the document is also known DE 25 34 954 A describing a vacuum interrupter comprising a screen attached to the casing via a curved portion towards the outside of the screen cooperating with a ring fixed in the casing of the switch.
  • the present invention provides a device for fixing a screen in a vacuum switch, simple design, requiring no intermediate parts.
  • the present invention relates to a device for fixing a screen in a switch according to claim 1.
  • the screen comprises three equidistant localized repulsing points.
  • a ring is fixed between one of the free ends of the aforementioned cylindrical portion and the cover to which this end is fixed, said ring supporting a said upper or lower screen.
  • the bulb comprising two tubular insulators placed end to end, a ring is fixed between the two insulators and supports a so-called central screen, fixed to the floating potential between the two insulators.
  • the aforementioned ring has a cross section, an L shape.
  • said ring is shaped and dimensioned so as to prevent the displacement of the screen perpendicularly to the axis of the switch.
  • the screen thus positioned is brazed to the circular ring by means of a solder rod located between the two parts.
  • the present invention also relates to a switch comprising the previously mentioned features taken alone or in combination.
  • FIG. 1 shows a vacuum interrupter 1 intended to be integrated in a circuit breaker or a medium voltage electrical switch in order to cut off an electrical circuit in the event of a fault or during a voluntary opening command. electrical circuit.
  • This bulb 1 comprises an envelope having a cylindrical portion 4,5 closed by two funds 6.7.
  • This cylindrical part is formed by two tubular ceramic insulators 4,5 and the two funds by two metal covers 6,7.
  • This envelope contains two contacts (not shown), one fixed, is integral with one 7 of the covers 6.7 and connected to said cover by an electrode 16, while the other mobile, is mounted on an electrode 17 able to move in the axis of the bulb 1 and through the other metal cap 6 to be connected to a control mechanism (not shown).
  • the movable contact is mounted to slide axially inside the envelope between a closed position of the contacts corresponding to a rest position of the circuit breaker and a position in which the contacts are separated and lead to the interruption of the electrical circuit. Sealing at the crossing is provided by means of a metal bellows 18 connecting the mobile electrode 17 to the cover 6.
  • This switch also comprises a first metal screen 11 whose main role is to protect the insulator or the insulators 4,5 of the condensation of metal vapors from the arc phase produced between the contacts during the power failure.
  • the apparatus also comprises a second screen 12 located at the junction between one 6 of the covers 6.7 and one 4 of the insulators 4,5, and a third screen 13 located at the junction between the second cover 7 and the other insulator 5.
  • Each of these screens 11, 12, 13 is supported by a circular ring 8, 9, 10 of inverted L-shaped cross section and having a portion 8a extending parallel to the axis of the bulb and a portion 8b. extending perpendicular to that axis.
  • the latter part 8b of the ring 8 is fixed between the two insulators 4,5 solder.
  • this part 8b is fixed between one 6 of the covers 6,7 and the corresponding end 4a of the insulator 4.
  • this part 8b is fixed between one of the 7 covers 6,7 and the corresponding end 5a of the insulator 5.
  • These insulators 11,12,13 insulator screens have on their outer surface, three localized points of repoussage 14 material able to bear on the circular ring 8,9,10 corresponding and ensure the translation stop translation 11,12,13 inside the bulb 1.
  • the shape and dimensions of the circular ring 8,9,10 are such that the screens can not move in the other directions ie perpendicular to the axis of the bulb.
  • the screens thus positioned are fixed to the circular ring 8, 9, 10 by vacuum brazing by means of a solder rod 15 located between the two parts.
  • a simplified fastening device for screens protecting the insulators has thus been achieved thanks to the invention, without any intermediate part between the screen and the circular ring fixed between the insulators or the insulator and one of the protective covers.
  • the translation stopping means is made in the form of at least one support made at a lower industrial cost by a localized repoussage of material on the outer surface of the the screen. It can thus rely on a copper ring, which by shaping prevents other degrees of freedom of the screen inside the bulb.
  • the localized repoussage of the material is advantageously substituted for a shaping revolution of the entire screen on the technical, technological and ecological, to achieve the same function.
  • the inner surface of the screen is not affected by the embossing method, thus preserving the dielectric qualities on the surface of the workpiece, which is a necessary condition to guarantee the electrical performance of a light bulb. vacuum switch.
  • connection between the screen and the ring does not require an intermediate piece, it is performed at the same time as the closure of the bulb, without additional soldering cycle.
  • the present invention can be used for fixing the insulators shields in different locations of the bulb. It allows both the fixing of the screen to the floating potential between two insulators that fixing screens between the insulator and one of the covers constituting the envelope of the bulb.
  • the number of pushback points is at least one to block the translational movement of the screen. Depending on the fit between the screen and the circular ring, it may be useful to increase the number of embossing points. According to the embodiment described, three localized embossing points are made, located 120 ° from each other, on the circumference of the insulator shield.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP05354004A 2004-03-02 2005-01-13 Dispositif de fixation d'un écran dans un interrupteur électrique notamment un interrupteur à vide. Not-in-force EP1571685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0402152A FR2867306B1 (fr) 2004-03-02 2004-03-02 Dispositif de fixation d'un ecran dans un interrupteur electrique, notamment un interrupteur a vide
FR0402152 2004-03-02

Publications (2)

Publication Number Publication Date
EP1571685A1 EP1571685A1 (fr) 2005-09-07
EP1571685B1 true EP1571685B1 (fr) 2007-08-15

Family

ID=34746478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05354004A Not-in-force EP1571685B1 (fr) 2004-03-02 2005-01-13 Dispositif de fixation d'un écran dans un interrupteur électrique notamment un interrupteur à vide.

Country Status (8)

Country Link
US (1) US7205499B2 (zh)
EP (1) EP1571685B1 (zh)
CN (1) CN1664970B (zh)
AT (1) ATE370511T1 (zh)
AU (1) AU2005200924B2 (zh)
DE (1) DE602005001955T2 (zh)
FR (1) FR2867306B1 (zh)
TW (1) TWI343069B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103329233B (zh) * 2010-10-01 2016-01-27 Abb技术有限公司 真空断续器和改进真空断续器的电压耐受性的方法
US8324521B2 (en) * 2010-11-15 2012-12-04 Eaton Corporation Bellows for use in vacuum interrupters
CN102254734B (zh) * 2011-06-30 2013-10-16 西安交通大学 高电压单断口真空灭弧室
FR3009643B1 (fr) 2013-08-09 2015-08-07 Schneider Electric Ind Sas Ampoule a vide, pole de disjoncteur comprenant une telle ampoule a vide et procedes de fabrication de tels dispositifs
US9455104B1 (en) * 2015-04-13 2016-09-27 Eaton Corporation Vacuum interrupter, retaining clip therefor and associated method
CN105070583B (zh) * 2015-07-07 2016-05-04 西安交通大学 带有屏蔽罩功能结构的绝缘外壳及其应用的真空灭弧室
DE102017222415B4 (de) * 2017-12-11 2021-03-25 Siemens Aktiengesellschaft Schirmelement für eine Vakuumschaltröhre
CN113474865A (zh) * 2019-02-06 2021-10-01 株式会社明电舍 真空断路器

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048681A (en) * 1960-08-11 1962-08-07 Gen Electric Shield mounting arrangement for a vacuum circuit interrupter
FR1298072A (fr) * 1960-08-11 1962-07-06 Thomson Houston Comp Francaise Perfectionnements aux interrupteurs dans le vide
US3189715A (en) * 1962-05-21 1965-06-15 Jennings Radio Mfg Corp Internal shield and seal structure for vacuum sealed switch envelope
GB1101674A (en) * 1965-06-02 1968-01-31 Int Standard Electric Corp Envelope for electrical devices
US4002867A (en) * 1972-11-01 1977-01-11 Westinghouse Electric Corporation Vacuum-type circuit interrupters with condensing shield at a fixed potential relative to the contacts
DE2534954C3 (de) * 1975-08-05 1979-05-23 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschaltrohr
DE7712445U1 (de) * 1977-04-20 1979-06-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verbindungsflanschring für Vakuumschaltröhren
US4733456A (en) * 1985-11-08 1988-03-29 General Electric Company Method of assembling a shield assembly of a vacuum interrupter
US4665287A (en) * 1985-11-08 1987-05-12 General Electric Company Shield assembly of a vacuum interrupter
US4757166A (en) * 1987-06-15 1988-07-12 Westinghouse Electric Corp. Vacuum interrupter with ceramic enclosure
NL8901748A (nl) 1989-07-07 1991-02-01 Holec Syst & Componenten Werkwijze voor het bevestigen van een metalen scherm in het huis van een vacuuemschakelaar, scherm daarvoor alsmede van een dergelijk scherm voorziene vacuuemschakelaar.
US5444201A (en) * 1993-11-22 1995-08-22 Eaton Corporation Multiple electrode structure for a vacuum interrupter
US5929411A (en) * 1997-10-22 1999-07-27 Eaton Corporation Vapor shield for vacuum interrupters
JP2000294089A (ja) * 1999-04-08 2000-10-20 Fuji Electric Co Ltd 真空バルブ
DE29910718U1 (de) * 1999-06-11 1999-12-09 Siemens Ag Vakuumschaltröhre mit einem Dampfschirm
US6417473B1 (en) * 2000-07-14 2002-07-09 Eaton Corporation Method and apparatus for mounting vapor shield in vacuum interrupter and vacuum interrupter incorporating same
JP3842735B2 (ja) * 2000-12-13 2006-11-08 シーメンス アクチエンゲゼルシヤフト 真空遮断器の容器部品間の接続部と真空遮断器

Also Published As

Publication number Publication date
US20050194359A1 (en) 2005-09-08
CN1664970A (zh) 2005-09-07
TWI343069B (en) 2011-06-01
DE602005001955T2 (de) 2008-05-15
ATE370511T1 (de) 2007-09-15
DE602005001955D1 (de) 2007-09-27
FR2867306A1 (fr) 2005-09-09
AU2005200924A1 (en) 2005-09-22
CN1664970B (zh) 2010-04-28
EP1571685A1 (fr) 2005-09-07
FR2867306B1 (fr) 2006-09-01
AU2005200924B2 (en) 2009-06-04
TW200531107A (en) 2005-09-16
US7205499B2 (en) 2007-04-17

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