EP1571685A1 - Befestigungsvorrichtung für einen Schutzschirm in einem elektrischen Schalter, insbesondere einem Vakuumschalter. - Google Patents

Befestigungsvorrichtung für einen Schutzschirm in einem elektrischen Schalter, insbesondere einem Vakuumschalter. Download PDF

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Publication number
EP1571685A1
EP1571685A1 EP05354004A EP05354004A EP1571685A1 EP 1571685 A1 EP1571685 A1 EP 1571685A1 EP 05354004 A EP05354004 A EP 05354004A EP 05354004 A EP05354004 A EP 05354004A EP 1571685 A1 EP1571685 A1 EP 1571685A1
Authority
EP
European Patent Office
Prior art keywords
screen
ring
envelope
insulators
fixed
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.)
Granted
Application number
EP05354004A
Other languages
English (en)
French (fr)
Other versions
EP1571685B1 (de
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/de
Application granted granted Critical
Publication of EP1571685B1 publication Critical patent/EP1571685B1/de
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 envelope of which at least one said moving contact, is connected to a control mechanism and is slidably mounted between a position of closing of the contacts and a position in which the contacts are separated and lead to cutting an electrical circuit, said cylindrical portion being mechanically connected by its two free ends respectively to the two end caps and having a or several parts forming cylindrical insulators mechanically and axially connected to one another, and at least one shield being supported by a cylindrical ring between two of the aforementioned parts of the casing connected mechanically, at the level of the mechanical connection between these two parts.
  • These metal screens located inside the ceramic insulator (s) have the role of main purpose of protecting the ceramic part (s) from condensation of vapors from the arc phase produced between the contacts during the cut-off Electric power.
  • the screen When the bulb has only one ceramic insulator, the screen has the potential float is connected to the isolator, either directly or through intermediate parts.
  • the US 5 077 883 and EP 0 406 944 describe a screen connected to the insulator directly, by deforming the screen around a generally asymmetrical protuberance of the insulator.
  • EP 1 172 834 discloses a screen connected to the isolator by an arrangement of intermediate parts, one of them being housed in a groove of the insulator provided for this effect. This method of attachment significantly increases the complexity of the shape and cost obtaining the insulator.
  • the screen thus mounted offers no connection point electrical outward to condition the voltage of the switch bulb.
  • the present invention provides a device for fixing a screen in a switch to empty, simple design, requiring no intermediate parts.
  • the present invention relates to a device for fixing a screen in a switch of the kind mentioned above, this device being characterized in that the aforementioned screen has on its outer surface, at least one localized embossing point of material, arranged to form at least one point of support of the screen on the ring, so as to ensure the translation stop of the screen parallel to the axis of the envelope.
  • the screen comprises three points of localized repelling equidistant.
  • a ring is fixed between one of the free ends of the said cylindrical portion and the hood to which this end is attached, said ring supporting a screen said upper or lower.
  • the bulb comprising two tubular insulators put end to end, a ring is fixed between the two insulators and supports a so-called central screen, attached to the floating potential between the two insulators.
  • the aforesaid ring has a cross section, a shape of the.
  • said ring is shaped and dimensioned so as to prevent the screen from moving perpendicular to the axis of the switch.
  • the screen thus positioned is brazed on the circular ring at means of a solder ring located between the two parts.
  • Another subject of the present invention is a switch comprising the characteristics previously mentioned alone or in combination.
  • a vacuum interrupter 1 intended to be integrated in a circuit breaker or a medium voltage electrical switch to cut a circuit in the event of a fault or during a voluntary opening of the circuit electric.
  • This bulb 1 comprises an envelope having a closed cylindrical portion 4.5 by two funds 6.7.
  • This cylindrical part is formed by two tubular insulators in ceramic 4.5 and the two bottoms by two metal hoods 6.7.
  • This envelope contains two contacts (not shown), one fixed, is integral with one of the 7 covers 6.7 and connected said hood 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 cover 6 to be connected to a control mechanism (not shown).
  • the mobile contact is mounted sliding 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 cause the power circuit break. Watertightness level of the crossing is provided by means of a metal bellows 18 connecting the electrode mobile 17 to the hood 6.
  • This switch also comprises a first metal screen 11 having the role principal to protect the insulator or isolators 4,5 from the condensation of vapors from the arc phase produced between the contacts during the cut-off Electric power.
  • the apparatus also comprises a second screen 12 located at the junction between one 6 6.7 hoods and one of the 4.5 isolators, and a third screen 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 section ring 8,9,10 inverted L-shaped cross section and having a portion 8a extending parallel to the axis of the bulb and a portion 8b extending perpendicularly to this axis.
  • the first screen 11, the latter part 8b of the ring 8, is fixed between the two insulators 4,5 by solder.
  • this part 8b is fixed between one 6 of the covers 6.7 and the corresponding end 4a of the isolator 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 screens 11,12,13 have on their outer surface, three points localized repoussage 14 material able to bear on the circular ring 8,9,10 corresponding and thus ensure the translation stop of screens 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 brazing under vacuum by means of a solder rod 15 located between the two parts.
  • a simplified fixing device screens protecting insulators without any intermediate piece between the screen and the circular ring fixed between the isolators or the isolator and one of the covers of a vacuum switch bulb.
  • the means for stopping in translation is realized in the form of at least one support made to lower industrial cost by localized repoussage of material on the outer surface of the screen. It can thus rely on a copper ring, which, by its shaping prevents other degrees of freedom from the screen inside the bulb.
  • the localized repoussage of the material is advantageously substituted for a shaping of revolution of the entire screen on the technical, technological and ecological levels, to achieve the same function.
  • the inner surface of the screen is not affected by the spinning method, thus preserving the dielectric qualities at the surface of the piece, which is a necessary condition to guarantee the electrical performance of a bulb of a vacuum switch.
  • connection between the screen and the ring does not require an intermediate piece, the latter is performed at the same time as the closing of the bulb, without a soldering cycle additional.
  • the present invention can be used for fixing the insulators screens in different places of the bulb. It also allows the fixing of the screen to the potential floating between two insulators that fixing screens between the insulator and one of the hoods constituting the envelope of the bulb.
  • the number of embossing points is at least one to block the movement in translation of the screen. Depending on the fit between the screen and the circular ring, it can be useful to increase the number of pushback points. According to the embodiment described, three localized embossing points are made, located 120 ° from each other, on the circumference of the shield insulator.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
EP05354004A 2004-03-02 2005-01-13 Befestigungsvorrichtung für einen Schutzschirm in einem elektrischen Schalter, insbesondere einem Vakuumschalter. Not-in-force EP1571685B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=34746478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05354004A Not-in-force EP1571685B1 (de) 2004-03-02 2005-01-13 Befestigungsvorrichtung für einen Schutzschirm in einem elektrischen Schalter, insbesondere einem Vakuumschalter.

Country Status (8)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835812A1 (de) 2013-08-09 2015-02-11 Schneider Electric Industries SAS Vakuumlampe, Schutzschalterpol, der eine solche Vakuumlampe umfasst, und Herstellungsverfahren dieser Vorrichtungen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5718471B2 (ja) * 2010-10-01 2015-05-13 アーベーベー・テヒノロギー・リミテッド 選択的カプセル封じを含むコンパクトな真空遮断器
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
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
WO2020161810A1 (ja) * 2019-02-06 2020-08-13 株式会社明電舎 真空インタラプタ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2534954A1 (de) * 1975-08-05 1977-02-10 Siemens Ag Vakuumschaltrohr
CH621648A5 (en) * 1977-04-20 1981-02-13 Siemens Ag Connecting flange for a vacuum switch
JP2000294089A (ja) * 1999-04-08 2000-10-20 Fuji Electric Co Ltd 真空バルブ
EP1172834A2 (de) * 2000-07-14 2002-01-16 Eaton Corporation Verfahren und Vorrichtung zur Befestigung eines Dampfschildes in einen Vakuumschalter, und damit versehener Vakuumschalter

Family Cites Families (10)

* 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
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
US4665287A (en) * 1985-11-08 1987-05-12 General Electric Company Shield assembly of a vacuum interrupter
US4733456A (en) * 1985-11-08 1988-03-29 General Electric Company Method of assembling a 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
DE29910718U1 (de) * 1999-06-11 1999-12-09 Siemens Ag Vakuumschaltröhre mit einem Dampfschirm
WO2002049056A1 (de) * 2000-12-13 2002-06-20 Siemens Aktiengesellschaft Verbindungsbereich zwischen gehäuseteilen einer vakuumschaltröhre und vakuumschaltröhre mit einem solchen verbindungsbereich

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2534954A1 (de) * 1975-08-05 1977-02-10 Siemens Ag Vakuumschaltrohr
CH621648A5 (en) * 1977-04-20 1981-02-13 Siemens Ag Connecting flange for a vacuum switch
JP2000294089A (ja) * 1999-04-08 2000-10-20 Fuji Electric Co Ltd 真空バルブ
EP1172834A2 (de) * 2000-07-14 2002-01-16 Eaton Corporation Verfahren und Vorrichtung zur Befestigung eines Dampfschildes in einen Vakuumschalter, und damit versehener Vakuumschalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835812A1 (de) 2013-08-09 2015-02-11 Schneider Electric Industries SAS Vakuumlampe, Schutzschalterpol, der eine solche Vakuumlampe umfasst, und Herstellungsverfahren dieser Vorrichtungen
US9633802B2 (en) 2013-08-09 2017-04-25 Schneider Electric Industries Sas Vacuum bulb, circuit-breaker pole including such a vacuum bulb, and method to manufacture such devices

Also Published As

Publication number Publication date
DE602005001955T2 (de) 2008-05-15
DE602005001955D1 (de) 2007-09-27
AU2005200924A1 (en) 2005-09-22
TWI343069B (en) 2011-06-01
CN1664970A (zh) 2005-09-07
US7205499B2 (en) 2007-04-17
CN1664970B (zh) 2010-04-28
FR2867306B1 (fr) 2006-09-01
FR2867306A1 (fr) 2005-09-09
EP1571685B1 (de) 2007-08-15
AU2005200924B2 (en) 2009-06-04
TW200531107A (en) 2005-09-16
ATE370511T1 (de) 2007-09-15
US20050194359A1 (en) 2005-09-08

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