WO2006063989A1 - Systeme de blindage constitue d'un alliage de cuivre et de chrome produit par metallurgie de fusion - Google Patents

Systeme de blindage constitue d'un alliage de cuivre et de chrome produit par metallurgie de fusion Download PDF

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Publication number
WO2006063989A1
WO2006063989A1 PCT/EP2005/056723 EP2005056723W WO2006063989A1 WO 2006063989 A1 WO2006063989 A1 WO 2006063989A1 EP 2005056723 W EP2005056723 W EP 2005056723W WO 2006063989 A1 WO2006063989 A1 WO 2006063989A1
Authority
WO
WIPO (PCT)
Prior art keywords
copper
chromium
produced
chromium alloy
vacuum
Prior art date
Application number
PCT/EP2005/056723
Other languages
German (de)
English (en)
Inventor
Roman Renz
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2006063989A1 publication Critical patent/WO2006063989A1/fr

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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
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
    • 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
    • H01H2033/66269—Details relating to the materials used for screens in vacuum switches

Definitions

  • Shield system consisting of a copper-chromium alloy produced by fusion metallurgy
  • the invention relates to a vacuum interrupter to interrup ⁇ chen a current having an an insulating aufwei ⁇ send a vacuum-tight housing, arranged in which a contact assembly having relatively movable contacts, wherein a contact assembly enclosing shield member is provided for suppressing deposition of metal on the insulating portion.
  • the invention further relates to a method for producing a shield of a vacuum interrupter.
  • the vacuum interrupter mentioned at the beginning and the method mentioned in the introduction are already known from DE 195 03 347 A1 , for example.
  • the vacuum interrupter shown there has a stationary fixed contact and a movable axially opposite this moving contact, wherein the fixed contact is held on a fixed fixed contact rod which passes through the boundary wall of a vacuum interrupter vakummdicht.
  • the moving contact is attached to a linearly movable BewegWalletstange, which is also led out of the vacuum chamber in which the Kon ⁇ clocks are arranged.
  • the Be ⁇ wegMap is connected via a metal bellows with the housing of Vakuumsehaltproving.
  • the contact assembly of the vacuum switch is surrounded by a shielding, the play is at ⁇ of a sintered copper-chromium alloy.
  • a sintered copper-chromium alloy Increases the resistance of the shield system against the interaction with the switching ⁇ arc.
  • contact pieces the contact pieces cally made of a schmelzmetallur ⁇ copper-chromium alloy, which consists of a copper matrix with an even distribution of fine dendritic chromium precipitates in the copper matrix and from 75-40% Mass fractions of copper and 20-60% by weight of chromium is composed. Furthermore, there is disclosed a method for producing such a contact piece, is produced in the melting material by arc ⁇ melting. Subsequently, the melting ⁇ material is formed by extrusion.
  • the prior art vacuum interrupter adheres to the disadvantage that a drawn between the contacts of the contact arrangement arc forms foot points on the shield, which can be damaged.
  • the object of the invention is therefore to provide a vacuum interrupter of the type mentioned, in which even at high operating voltages and currents damage to the shielding is avoided by the arc.
  • the shield ⁇ element consists at least partially of a melt-metallurgically produced copper-chromium alloy.
  • the melt metallurgical manufacturing is, as already leads excluded was disclosed 0172411 Bl EP, which is by this reference part of the present here Offenbarungsge ⁇ haltes.
  • the enamel material described there has, in comparison to powder metallurgical copper-chromium materials Faster temperature resistance, so that the shield can withstand higher temperatures and thus hotter arcs.
  • the vacuum interrupter according to the invention is therefore capable of switching higher powers, without there even after a short time to irreparab ⁇ len damage to the shield.
  • a high life of the vacuum interrupter according to the invention is provided even at higher operating voltages and / or operating currents.
  • the melt metallurgically Herge ⁇ presented copper-chromium alloy, a copper matrix with an even distribution of dendritic chromium finely divided precipitates in the copper matrix.
  • this melting material temperature resistance was the ex ⁇ shielding be increased even further.
  • the copper-chromium alloy has a Kup ⁇ feranteil 75-40 weight percent and a proportion of chromium between 25 and 60 percent by weight.
  • the invention solves the problem in that a plate-shaped or block-shaped copper-chromium-melting material is produced, wherein the shield by cold forming and / or chip-removing machining of the copper-chromium melting material is Herge ⁇ provides. Unlike the shields of the prior art, the shield is not made by suitable drawing techniques. On the contrary, methods of cold forming are used according to the invention. Thus, for example, of the plate- or sheet-shaped chromium-copper discs strip are punched, subsequently forming by cold ⁇ , so bending or rolling, into the desired rohrför- Mige structure be brought. These tubular structures, or in other words copper-chrome tubes, then serve as semi-finished products for the production of the tubular shield.
  • the production of a block-shaped copper-chromium fusion material is mög ⁇ Lich
  • the copper-chromium block is machined, so the shield is made by simply drilling a cavity in the block-shaped copper-chromium enamel.
  • milling operations on the copper-chromium-melting material within the scope of the invention are also possible as a machining operation. Since the chip removal has large material losses in the wake, the cold forming of plate-shaped copper-chromium-melt materials is preferred in the invention.
  • Figure shows a partially sectioned side view ei ⁇ ner vacuum interrupter.
  • the single FIGURE shows a partially cut FIGan ⁇ view of a vacuum interrupter 1, which has a two-part hollow cylindrical ceramic housing 2a and 2b, whose hous ⁇ parts 2a and 2b each end face by metallic De ⁇ ckel 3 and 4 are sealed vacuum-tight, so that a Vacuum switching chamber 5 is formed.
  • the cover 3 is penetrated by a solid contact rod 6 vacuum-tight.
  • a fixed contact 7 is arranged at the arranged in the Vakuumsehalthunthunt 5 free end of the fixed contact rod 6, a fixed contact 7 is arranged.
  • the lid 4 is penetrated by a shift rod 8, which carries a Bewegkon ⁇ clock 9.
  • the shift rod 8 and the moving contact 9 are guided longitudinally movable, so that the moving contact 9 can be transferred from its disconnected position shown in the figure out in a contact position in which the moving contact 9 rests against the fixed contact 7 and a current flow through the Vaku ⁇ change- over. 1 is possible.
  • this is connected via a retractable and retractable metal bellows 10 with the lid 4 vacuum-tight.
  • a shield 11 is seen upstream, which consists of a shield section 12 and an attachment portion. 13
  • the shielding portion 12 surrounds the existing of the fixed contact 7 and the moving contact 9 contact arrangement.
  • the shielding ⁇ section 12 consists of a copper-chromium enamel with a copper and chromium content of 50 weight percent.
  • the attachment portion 13 is made of copper.
  • the shield 11 may also be formed only partially from the copper-chromium fusion material.

Landscapes

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

Abstract

L'invention concerne un tube commutateur à vide (1) servant à interrompre un courant et comprenant un boîtier étanche au vide qui présente un segment isolant (2a, 2b) et dans lequel est placé un système de contact muni de contacts (7, 9) déplaçables les uns par rapport aux autres. Un élément de blindage (11) entourant le système de contact et servant à empêcher un dépôt métallique est prévu sur le segment isolant (2a, 2b). L'invention vise à empêcher une détérioration de l'élément de blindage (11) même en cas de tensions de fonctionnement élevées. A cet effet, l'élément de blindage (11) est constitué au moins partiellement d'un alliage de cuivre et de chrome produit par métallurgie de fusion.
PCT/EP2005/056723 2004-12-15 2005-12-13 Systeme de blindage constitue d'un alliage de cuivre et de chrome produit par metallurgie de fusion WO2006063989A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410061497 DE102004061497A1 (de) 2004-12-15 2004-12-15 Aus einer schmelzmetallurgisch hergestellten Kupferchromlegierung bestehendes Schirmsystem
DE102004061497.0 2004-12-15

Publications (1)

Publication Number Publication Date
WO2006063989A1 true WO2006063989A1 (fr) 2006-06-22

Family

ID=35637470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/056723 WO2006063989A1 (fr) 2004-12-15 2005-12-13 Systeme de blindage constitue d'un alliage de cuivre et de chrome produit par metallurgie de fusion

Country Status (2)

Country Link
DE (1) DE102004061497A1 (fr)
WO (1) WO2006063989A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009043769A1 (fr) * 2007-09-27 2009-04-09 Siemens Aktiengesellschaft Composant tubulaire pouvant être inséré dans un tube d'interrupteur à vide en tant que blindage et procédé de fabrication d'un composant tubulaire pouvant être inséré dans un tube d'interrupteur à vide en tant que blindage
WO2009043771A1 (fr) * 2007-09-27 2009-04-09 Siemens Aktiengesellschaft Procédé de fabrication d'un élément cylindrique creux, notamment d'un blindage pour ampoule à vide, et ampoule à vide
CN107644779A (zh) * 2017-09-28 2018-01-30 湖州电力设备成套有限公司 一种真空泡及真空泡固封极柱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10134546B2 (en) * 2015-11-20 2018-11-20 Eaton Intelligent Power Limited Maximizing wall thickness of a Cu—Cr floating center shield component by moving contact gap away from center flange axial location

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1316102A (en) * 1969-08-08 1973-05-09 Ass Elect Ind Vacuum switches
US4553007A (en) * 1983-09-30 1985-11-12 Westinghouse Electric Corp. Arc resistant vapor condensing shield for vacuum-type circuit interrupter
EP0172411A1 (fr) * 1984-07-30 1986-02-26 Siemens Aktiengesellschaft Contacteur sous vide avec des pièces de contact de CuCr et procédé pour la fabrication de tels pièces
DE19503347A1 (de) * 1995-02-02 1996-08-08 Abb Patent Gmbh Die Kontaktstelle eines Vakuumschalters umgebendes Abschirmelement
FR2745118A1 (fr) * 1996-02-16 1997-08-22 Schneider Electric Sa Interrupteur ou disjoncteur a vide
DE19747242A1 (de) * 1997-10-25 1999-04-29 Abb Patent Gmbh Verfahren zur Herstellung einer Blechform für Vakuumkammerschirme
WO2005078755A1 (fr) * 2004-02-11 2005-08-25 Abb Technology Ag Chambre de commutation a vide munie d'un blindage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932159A1 (de) * 1989-09-27 1991-04-04 Calor Emag Elektrizitaets Ag Vakuum-schaltkammer und verfahren zu deren herstellung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1316102A (en) * 1969-08-08 1973-05-09 Ass Elect Ind Vacuum switches
US4553007A (en) * 1983-09-30 1985-11-12 Westinghouse Electric Corp. Arc resistant vapor condensing shield for vacuum-type circuit interrupter
EP0172411A1 (fr) * 1984-07-30 1986-02-26 Siemens Aktiengesellschaft Contacteur sous vide avec des pièces de contact de CuCr et procédé pour la fabrication de tels pièces
DE19503347A1 (de) * 1995-02-02 1996-08-08 Abb Patent Gmbh Die Kontaktstelle eines Vakuumschalters umgebendes Abschirmelement
FR2745118A1 (fr) * 1996-02-16 1997-08-22 Schneider Electric Sa Interrupteur ou disjoncteur a vide
DE19747242A1 (de) * 1997-10-25 1999-04-29 Abb Patent Gmbh Verfahren zur Herstellung einer Blechform für Vakuumkammerschirme
WO2005078755A1 (fr) * 2004-02-11 2005-08-25 Abb Technology Ag Chambre de commutation a vide munie d'un blindage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009043769A1 (fr) * 2007-09-27 2009-04-09 Siemens Aktiengesellschaft Composant tubulaire pouvant être inséré dans un tube d'interrupteur à vide en tant que blindage et procédé de fabrication d'un composant tubulaire pouvant être inséré dans un tube d'interrupteur à vide en tant que blindage
WO2009043771A1 (fr) * 2007-09-27 2009-04-09 Siemens Aktiengesellschaft Procédé de fabrication d'un élément cylindrique creux, notamment d'un blindage pour ampoule à vide, et ampoule à vide
CN107644779A (zh) * 2017-09-28 2018-01-30 湖州电力设备成套有限公司 一种真空泡及真空泡固封极柱

Also Published As

Publication number Publication date
DE102004061497A1 (de) 2006-07-06

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