EP1873804A2 - Verfahren zur Befestigung eines Elements in einem elektrischen Gerät und elektrisches Gerät wie ein Vakuumrohr, das mindestens zwei Teile umfasst, die gemäß einem solchen Verfahren befestigt werden - Google Patents

Verfahren zur Befestigung eines Elements in einem elektrischen Gerät und elektrisches Gerät wie ein Vakuumrohr, das mindestens zwei Teile umfasst, die gemäß einem solchen Verfahren befestigt werden Download PDF

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Publication number
EP1873804A2
EP1873804A2 EP20070354030 EP07354030A EP1873804A2 EP 1873804 A2 EP1873804 A2 EP 1873804A2 EP 20070354030 EP20070354030 EP 20070354030 EP 07354030 A EP07354030 A EP 07354030A EP 1873804 A2 EP1873804 A2 EP 1873804A2
Authority
EP
European Patent Office
Prior art keywords
screen
casing
electrode
stent
vacuum bulb
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.)
Withdrawn
Application number
EP20070354030
Other languages
English (en)
French (fr)
Other versions
EP1873804A3 (de
Inventor
Olivier Cardoletti
Hans Schellekens
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 EP1873804A2 publication Critical patent/EP1873804A2/de
Publication of EP1873804A3 publication Critical patent/EP1873804A3/de
Withdrawn legal-status Critical Current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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • 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
    • H01H2033/66276—Details relating to the mounting 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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing

Definitions

  • the present invention relates to a method of fixing an element on a part belonging to an electrical apparatus and an electrical apparatus such as a vacuum interrupter comprising at least two parts fixed according to such a method.
  • the vacuum bulbs are constituted by an envelope, usually ceramic, generally cylindrical in shape and closed by two funds within which are a fixed contact and a so-called mobile contact.
  • This movable contact can be moved between a position in which the two fixed and movable contacts are touching so as to allow the passage of current and an open contact position in which these two contacts are separated so as to interrupt the current.
  • These bulbs may also include dielectric screens mounted around the contacts or mounted to the upper and lower portions of said bulb.
  • Fixing the dielectric screens, mounted around the contacts, on the envelope can be done in several ways:
  • bulbs consisting of an envelope formed of two cylindrical parts.
  • the dielectric screen is formed by a cylindrical portion having an annular rib extending perpendicularly to the axis of the cylinder and interposed between said cylindrical portions of the casing.
  • the disadvantage of this solution is the bi-ceramic nature of the bulb.
  • a so-called mono-ceramic bulb comprising a monoblock envelope whose inner face has a boss adapted to cooperate with an annular recess provided on the outer face of the screen.
  • This solution has the disadvantage of requiring machining of the envelope.
  • the dielectric screen is of cylindrical shape and comprises a cylindrical rib by which the screen is supported on the aforementioned spring, a solder for permanently fixing the screen on the spring.
  • the disadvantages of this embodiment are mainly because the screen is not locked in rotation and the ceramic casing requires machining.
  • the centering and soldering of the upper and lower dielectric screens requires tooling and are performed at the time of closing the bulb.
  • the contact pads are generally brazed on the electrodes before the closure of the bulb, which involves carrying out the respectively brazing and closing phases in two stages.
  • the present invention solves these disadvantages and proposes a method of fixing an element on a part belonging to an electrical apparatus and an electrical apparatus such as a vacuum interrupter comprising at least two parts fixed according to such a method, allowing centering and holding of the element which must be fixed, before its final fixing, without it being necessary to carry out a preliminary machining of the parts such as the ceramic envelope, and allowing to realize the assembly of the apparatus and the fixation of the elements once.
  • the subject of the present invention is a method for fixing an element on a part belonging to an electrical appliance, this method being characterized in that it consists in interposing between said element and said part an extender capable of exerting efforts on the element and said part so as to durably position the element relative to said part and / or to block said element in position with respect to said part by friction between, on the one hand, the stent and the element and on the other hand, the expander and said part, and thus ensure the positioning and / or the maintenance of said element with respect to said part.
  • this positioning and / or maintenance is performed prior to the definitive fixing of said element.
  • the aforementioned definitive fixing is carried out by carrying out two brazing operations respectively between said element and the expander and between the expander and said part.
  • each brazing operation comprises at least three brazing points.
  • Another subject of the present invention is an electrical apparatus such as a vacuum interrupter comprising at least one element intended to be fixed on a part belonging to said apparatus according to a method comprising the aforementioned characteristics taken alone or in combination.
  • the vacuum interrupter comprising a casing of substantially cylindrical shape closed by two end caps in which are housed two arcing contacts and a dielectric screen mounted around the contacts, this bulb is characterized in that the said screen is fixed on the envelope by means of a stent mounted inside the envelope between said envelope and the screen and able to exert radial forces on the envelope and the screen, said expander being respectively fixed on the casing and on the screen by respectively two brazing operations according to the aforesaid process comprising the previously mentioned features taken alone or in combination.
  • the vacuum bulb having at its upper and / or lower part, an end cap and a dielectric screen mounted around the end cap, this bulb is characterized in that it comprises a mounted expander between the aforementioned end cap and the dielectric shield and soldered on the one hand to said cap and on the other hand to said screen, according to the aforementioned method having the previously mentioned features taken alone or in combination.
  • the vacuum interrupter comprises a casing of substantially cylindrical shape closed by two end covers in which are housed two arcing contacts, said bulb comprising at its upper part and / or lower, a dielectric screen mounted around the envelope, this bulb is characterized in that it comprises a stent mounted between said screen and the envelope and fixed by soldering on the one hand to said envelope and on the other hand to said screen according to the aforesaid process comprising the above-mentioned features taken alone or in combination.
  • At least one of the contacts respectively fixed and mobile is attached to the electrode associated with it via a stent interposed between the contact and the electrode.
  • the or each contact comprises a tubular orifice intended to receive a conjugately shaped portion of the corresponding electrode.
  • the or each contact comprises a tubular orifice intended to receive a conjugately shaped portion of the corresponding electrode and said stent has a disc shape comprising in its center a closed tubular conduit intended to be introduced into the tubular conduit. corresponding contact and to receive the tubular portion of corresponding shape belonging to the electrode.
  • said vacuum interrupter having a bellows shield mounted around a bellows mounted around the movable electrode, this bulb is characterized in that the bellows shield is attached to the electrode by means of a stent mounted between the bellow shield and the electrode and fixed respectively by two solderings on the electrode and on the bellow protector screen.
  • a vacuum interrupter A is shown for use in a switch for breaking into an electrical circuit.
  • This bulb A comprises a cylindrical envelope 1 closed by two end covers 2,3, in which are housed two arcing contacts 4,5, one of which 4, fixed, is integral with one of the two aforementioned hoods 2 3 while the other 5, movable, is mounted to slide axially inside the cartridge A through the so-called lower end cap 3.
  • Each contact 4,5 has a contact pad 6,7 fixed on an electrode 8, the electrode 8 of the fixed contact 4 being fixed to said upper cover 2, while the electrode 9 of the movable contact 5 is slidably mounted through the lower end cap 3, a bellows of sealing 10 being interposed between the movable electrode 9 and the lower end cap 3.
  • This bulb A also comprises dielectric screens 11,12,13 and 14 comprising a screen 11 placed around the contacts 4,5, a screen 12 placed around the end cap 2 said upper and a screen 13 located around the c apot 3 said lower and a screen 14 located around the sealing bellows 10.
  • the casing 1 of the bulb A is constituted by two parts 15,16.
  • the dielectric screen 11 located around the contacts 4,5 is constituted by a cylindrical portion 17 and comprises a collar 18 extending from the cylindrical portion 17 of the screen 11 in a direction perpendicular to the axis of the screen.
  • Fixing said screen 11 on the envelope 1 is performed by placing the flange 18 between the two parts of envelopes 15, 16 and producing a solder 34 between the screen 11 and the envelope 1 on either side of the flange 18.
  • the two screens 12,13 respectively upper and lower, are centered and brazed with a tool when closing the bulb.
  • the two contact pads 6,7 are brazed to the fixed and mobile electrodes 8,9 before the closure of the bulb.
  • the main screen 11 is fixed on the envelope 1 according to the invention by means of an expander 19, just as the two dielectric screens 12, 13, respectively upper and lower respectively are fixed on the envelope 1 by means of a stent 20,21, and that the lower dielectric screen 13 is also fixed on the lower end cap 3 by means of a stent 22.
  • FIGS. 3 and 4 the screen is not yet fixed on the casing 1.
  • a mounting tool 23 is placed inside the casing 1 to guide the assembly of expander.
  • the expander 19 is placed inside the casing 1 and bears on the mounting tool 23.
  • the screen 11 is placed inside of the expander 19 and said expander 19 generates radial forces on the screen 11 and the envelope so as to hold said screen 11 in position before its final fixing, which is carried out by two solderings made respectively between the screen 11 and the expander 19 and between the expander 19 and the casing 1. Then, the mounting tool is removed. (Figs 11 and 12).
  • the fixing of the upper screens 12 and lower 13 is carried out by placing two stents 20,21 respectively around the upper part 24 and the lower part 25 of the casing 1, then a stent 22 around the cover of lower end 3, then placing the upper dielectric screen 12 around the stent 20 located at the upper portion 24 of the casing 1; then the lower dielectric screen 13 is mounted around the two stents 21,22 located at the lower part 25 of the casing 1.
  • the final fixation of the stents 19 to 22 will be achieved by brazing between on the one hand, the stents 19 to 22 and the corresponding dielectric screens 11,12,13 and secondly, between the stents 19,20,21 and the ceramic casing 1, or between the expander 22 and the hood
  • the stents 19 to 22 then center the dielectric screens 11, 12, 13.
  • stents 26,27 are placed respectively between the contact pads 6,7 and their respective electrode 8,9.
  • the contacts 4,5 comprise a tubular orifice 28,29 intended to receive a conjugate-shaped part 30,31 of the corresponding electrode 8,9, and the expander 26,27 associated with the contact respectively 4,5 has a shape of disc having in its center a closed tubular conduit 32,33 for receiving the tubular portion of corresponding shape 30,31 belonging to the electrode 8,9.
  • the stents 26,27 placed at the contacts 4,5 perform a maintenance of the contact pads 6,7 on the corresponding electrodes 8,9 prior to the final fixing of said pellets 6,7 on the electrodes 8,9. All the aforementioned solders will be made at the same time after assembling the bulb and placed the latter inside an oven. Note therefore that according to the invention, the fixing of the screen can be performed with a smooth ceramic without the need to perform machining thereon.
  • the invention can also be implemented on a non-smooth ceramic.
  • the spring locks the screen in position by friction, vertically and in rotation, prior to final fixation by brazing. This method of attachment makes it possible to adapt to a wide range of manufacturing tolerances for ceramics. It may be noted that it will be possible to fix other elements than those described above, inside the envelope, such as the bellow protector screen on the electrode or outside centering tools that can serve as a triple point protection screen.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manufacture Of Switches (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP20070354030 2006-06-30 2007-05-22 Verfahren zur Befestigung eines Elements in einem elektrischen Gerät und elektrisches Gerät wie ein Vakuumrohr, das mindestens zwei Teile umfasst, die gemäß einem solchen Verfahren befestigt werden Withdrawn EP1873804A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605928A FR2903221B1 (fr) 2006-06-30 2006-06-30 Procede de fixation d'un element dans un appareil electrique et appareil electrique tel une ampoule a vide comportant au moins deux parties fixees suivant un tel procede

Publications (2)

Publication Number Publication Date
EP1873804A2 true EP1873804A2 (de) 2008-01-02
EP1873804A3 EP1873804A3 (de) 2010-04-14

Family

ID=37714310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070354030 Withdrawn EP1873804A3 (de) 2006-06-30 2007-05-22 Verfahren zur Befestigung eines Elements in einem elektrischen Gerät und elektrisches Gerät wie ein Vakuumrohr, das mindestens zwei Teile umfasst, die gemäß einem solchen Verfahren befestigt werden

Country Status (6)

Country Link
US (1) US7820934B2 (de)
EP (1) EP1873804A3 (de)
JP (1) JP5225621B2 (de)
CN (2) CN101098599A (de)
FR (1) FR2903221B1 (de)
RU (1) RU2428762C2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2543984C2 (ru) * 2010-10-01 2015-03-10 Абб Текнолоджи Лтд Компактный вакуумный прерыватель с избирательным инкапсулированием
JP5746525B2 (ja) * 2011-03-08 2015-07-08 株式会社東芝 樹脂モールド真空バルブ
US8710389B2 (en) * 2011-11-15 2014-04-29 Eaton Corporation Vacuum switch and electrode assembly therefor
WO2015140674A1 (en) * 2014-03-17 2015-09-24 Sécheron Sa Circuit interrupting device
CN104051192A (zh) * 2014-07-08 2014-09-17 宝鸡市晨光真空电器有限责任公司 陶瓷低压接触器
CN113474865A (zh) * 2019-02-06 2021-10-01 株式会社明电舍 真空断路器
CN112992574B (zh) * 2019-12-17 2022-12-13 天津平高智能电气有限公司 一种真空灭弧室装配工装
DE102019219879B4 (de) * 2019-12-17 2023-02-02 Siemens Aktiengesellschaft Verfahren zum Herstellen von verschweißbar ausgestalteten Kupferschaltkontakten und Vakuumleistungsschalter mit solchen Kontaktstücken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433821A (en) 1987-07-29 1989-02-03 Hitachi Ltd Vacuum circuit breaker
JPH11195357A (ja) * 1998-01-07 1999-07-21 Meidensha Corp 真空インタラプタ
DE19921475A1 (de) * 1999-05-08 2000-11-09 Abb Patent Gmbh Kontaktanordnung für Schalter, Schütze, ect.
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

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3590184A (en) * 1968-12-09 1971-06-29 Allis Chalmers Mfg Co High-voltage outdoor vaccum switch with conductive coating serving as electrostatic shield means and end cap-mounting means
US4440995A (en) * 1981-01-19 1984-04-03 Westinghouse Electric Corp. Vacuum circuit interrupter with on-line vacuum monitoring apparatus
JPS6489126A (en) * 1987-09-30 1989-04-03 Hitachi Ltd Vacuum valve
DE3932159A1 (de) * 1989-09-27 1991-04-04 Calor Emag Elektrizitaets Ag Vakuum-schaltkammer und verfahren zu deren herstellung
DE3933215C1 (de) 1989-10-05 1991-04-25 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe, De
JPH0465041A (ja) * 1990-07-03 1992-03-02 Meidensha Corp 真空インタラプタにおけるシールド取付構造
JP2861757B2 (ja) * 1992-11-10 1999-02-24 三菱電機株式会社 真空バルブの電極装置
JPH10321094A (ja) * 1997-05-19 1998-12-04 Mitsubishi Electric Corp 真空バルブ
US6643903B2 (en) * 1997-11-13 2003-11-11 Greatbatch-Sierra, Inc. Process for manufacturing an EMI filter feedthrough terminal assembly
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433821A (en) 1987-07-29 1989-02-03 Hitachi Ltd Vacuum circuit breaker
JPH11195357A (ja) * 1998-01-07 1999-07-21 Meidensha Corp 真空インタラプタ
DE19921475A1 (de) * 1999-05-08 2000-11-09 Abb Patent Gmbh Kontaktanordnung für Schalter, Schütze, ect.
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

Also Published As

Publication number Publication date
EP1873804A3 (de) 2010-04-14
US20080020631A1 (en) 2008-01-24
JP5225621B2 (ja) 2013-07-03
CN104582388B (zh) 2020-05-01
RU2428762C2 (ru) 2011-09-10
US7820934B2 (en) 2010-10-26
RU2007124643A (ru) 2009-01-10
CN101098599A (zh) 2008-01-02
FR2903221B1 (fr) 2013-12-20
FR2903221A1 (fr) 2008-01-04
CN104582388A (zh) 2015-04-29
JP2008016449A (ja) 2008-01-24

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