DE925848C - Electrodes for switching and interrupting devices - Google Patents

Electrodes for switching and interrupting devices

Info

Publication number
DE925848C
DE925848C DES6684D DES0006684D DE925848C DE 925848 C DE925848 C DE 925848C DE S6684 D DES6684 D DE S6684D DE S0006684 D DES0006684 D DE S0006684D DE 925848 C DE925848 C DE 925848C
Authority
DE
Germany
Prior art keywords
electrodes
switching
interrupting devices
devices
gas
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
Application number
DES6684D
Other languages
German (de)
Inventor
Else Dr Holm
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.)
Siemens AG
Original Assignee
Siemens AG
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 to DES6683D priority Critical patent/DE914146C/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES6684D priority patent/DE925848C/en
Priority to CH307456D priority patent/CH307456A/en
Application granted granted Critical
Publication of DE925848C publication Critical patent/DE925848C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/664Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6646Contacts; Arc-extinguishing means, e.g. arcing rings having non flat disc-like contact surface
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/02Contacts characterised by the material thereof
    • H01H1/0203Contacts characterised by the material thereof specially adapted for vacuum switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00Details of spark gaps
    • H01T1/24Selection of materials for electrodes

Landscapes

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

Description

Es ist schon vorgeschlagen worden, als Elektroden für Schalt- und Unterbrechungseinrichtungen solche zu verwenden, die aus im Vakuum gezüchteten Einkristallen bestehen. Nach der Erfindung wird das die Unterbrechungseinrichtung bildende Paar von Einkristallelektroden innerhalb einer Gasatmosphäre angeordnet, die keine Reaktion auf die Elektroden ausübt. Hierzu ist es wichtig, daß die Gasatmosphäre praktisch sauerstofffrei ist. Die Unterbrechungseinrichtung kann beispielsweise mit Stickstoff gefüllt sein. Besonderen Vorteil bietet es aber, die Unterbrechungseinrichtung mit Edelgas zu füllen, wovon in erster Linie Argon, Neon, Helium, Krypton in Betracht kommen. Die Anwendung einer neutralen Gasatmosphäre ist an sich für Schalteinrichtungen bereits angegeben worden. Im Zusammenhang mit Elektroden nach der Hauptanmeldung werden hierbei jedoch ganz besondere Vorteile erreicht. Es wird nämlich dadurch ermöglicht, daß die Eigenschaft der Elektroden, daß sie nicht wie polykristallines Metall Sauerstoff enthalten, der infolge des Lichtbogens und der Lichtbogenhitze frei werden kann, sondern daß sie selbst praktisch frei von Sauerstoff sind und infolge ihres regelmäßigen Aufbaues fast keine Fehlstellen besitzen, die als Angriffspunkte für die Elektroden in Betracht kommen wurden, in besonders wirksamer Weise ausgenutzt werden kann. Es wird dadurch ermöglicht, für gegebene Schaltleistungen mit besonders geringen Abmessungen und niedrigem Aufwand auszukommen. Als Anwendungsgebiet für die Kombination Einkristallelektroden mit Gasfüllung,It has already been proposed as electrodes for switching and interrupting devices to use those that consist of single crystals grown in a vacuum. According to the invention becomes the pair of single crystal electrodes forming the interruption means within one Arranged gas atmosphere that does not react to the electrodes. For this it is important that the gas atmosphere is practically free of oxygen. The interruption device can, for example, with Be filled with nitrogen. However, the interruption device with inert gas offers a particular advantage to fill, of which argon, neon, helium, krypton come into consideration. The application a neutral gas atmosphere has already been specified per se for switching devices. in the However, the connection with electrodes according to the main application is very special here Benefits achieved. It is made possible that the property of the electrodes that Like polycrystalline metals, they do not contain oxygen, which is a result of the arc and the heat of the arc can become free, but that they themselves are practically free of oxygen and as a result of it regular structure have almost no imperfections that act as points of attack for the electrodes in Have come under consideration, can be exploited in a particularly effective manner. It becomes through it allows for given switching capacities with particularly small dimensions and low effort get along. As an area of application for the combination of single crystal electrodes with gas filling,

vorzugsweise Edelgasfüllung, kommen neben Schalteinrichtungen für niedrige und mittlere Leistungen vor allem auch Entladungsstrecken, wie Blitzschutzeinrichtungen für Schwachstromleitungen oder Vorfunkenstrecken für Zündkerzen u. dgl., in Betracht.preferably noble gas filling, come in addition to switching devices for low and medium powers Above all, also discharge paths, such as lightning protection devices for low-voltage lines or pre-spark gaps for spark plugs and the like.

Hinsichtlich der Materialauswahl und der Schaltung, Parallelkapazität u. dgl. kommen folgende Möglichkeiten in Betracht: Als Kontaktmetall kann man in erster Linie Kupfer, gegebenenfalls auch Silber nehmen; für manche Verwendungszwecke, bei denen es insbesondere auf den hohen Schmelzpunkt ankommt, können als Elektroden auch Wolframeinkristalle und Nickeleinkristalle verwendet werden.With regard to the choice of material and the circuit, parallel capacitance and the like, the following apply Possibilities under consideration: Primarily copper can be used as contact metal, possibly also Take silver; for some uses where it is particularly due to the high melting point arrives, tungsten monocrystals and nickel monocrystals can also be used as electrodes will.

Die Anwendung des Erfindungsgegenstandes ist für Schalteinrichtungen jeder Art sowie auch für Unterbrechungseinrichtungen nach Art von Funkenstrecken wertvoll. Hierbei kann es vorteilhaft sein, die Kontakte mit einer verhältnismäßig großen Oberfläche auszuführen, so daß durch die gute Wärmeableitung eine - örtliche Übererwärmung an den Stromübergangsstellen verhindert wird.The application of the subject matter of the invention is for switching devices of all types as well as for Interrupting devices like spark gaps are valuable. Here it can be advantageous execute the contacts with a relatively large surface, so that by the good Heat dissipation - local overheating at the current transfer points is prevented.

Claims (2)

Patentansprüche:Patent claims: 1. Elektroden für Schalt-undUnterbrechungseinrichtungen, insbesondere Vakuumschalter, aus Einkristallen, dadurch gekennzeichnet, daß das Elektrodenpaar innerhalb einer Gasatmosphäre angeordnet ist, die keinerlei Reaktion auf die Elektroden ausübt.1. Electrodes for switching and interrupting devices, in particular vacuum switch, made of single crystals, characterized in that the pair of electrodes is within a gas atmosphere is arranged, which has no reaction to the electrodes. 2. Anordnung mit Elektroden nach Anspruch i, dadurch gekennzeichnet, daß als Gasfüllung Edelgas verwendet ist.2. Arrangement with electrodes according to claim i, characterized in that the gas filling Noble gas is used.
DES6684D 1943-07-07 1943-11-04 Electrodes for switching and interrupting devices Expired DE925848C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DES6683D DE914146C (en) 1943-07-07 1943-10-22 Vacuum switch
DES6684D DE925848C (en) 1943-11-04 1943-11-04 Electrodes for switching and interrupting devices
CH307456D CH307456A (en) 1943-07-07 1944-08-14 Method for producing an electrical device having two electrodes and device produced according to this method.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES6684D DE925848C (en) 1943-11-04 1943-11-04 Electrodes for switching and interrupting devices

Publications (1)

Publication Number Publication Date
DE925848C true DE925848C (en) 1955-03-31

Family

ID=7472162

Family Applications (1)

Application Number Title Priority Date Filing Date
DES6684D Expired DE925848C (en) 1943-07-07 1943-11-04 Electrodes for switching and interrupting devices

Country Status (1)

Country Link
DE (1) DE925848C (en)

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