DE619806C - Electric switch with arc extinguishing by compressed air - Google Patents

Electric switch with arc extinguishing by compressed air

Info

Publication number
DE619806C
DE619806C DEA69933D DEA0069933D DE619806C DE 619806 C DE619806 C DE 619806C DE A69933 D DEA69933 D DE A69933D DE A0069933 D DEA0069933 D DE A0069933D DE 619806 C DE619806 C DE 619806C
Authority
DE
Germany
Prior art keywords
compressed air
piston
arc extinguishing
electric switch
contact
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
DEA69933D
Other languages
German (de)
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.)
Ateliers de Constructions Electriques de Delle SA
Original Assignee
Ateliers de Constructions Electriques de Delle SA
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 Ateliers de Constructions Electriques de Delle SA filed Critical Ateliers de Constructions Electriques de Delle SA
Application granted granted Critical
Publication of DE619806C publication Critical patent/DE619806C/en
Expired legal-status Critical Current

Links

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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Landscapes

  • Circuit Breakers (AREA)
  • Actuator (AREA)

Description

Elektrischer Schalter mit Lichtbogenlöschung durch Druckluft Die Erfindung bezieht sich auf einen elektrischen Schalter mit Lichtbogenlöschung durch Druckluft, die während des Ausschaltvorganges in einer Kolbenpumpe erzeugt und vermittels einer mit dem Kolben verbundenen hohlen Kolbenstange und dem hohl ausgeführten, beweglichen Kontakt aus demDruckraum der Unterbrechungsstelle zugeleitet wird. Gemäß der Erfindung ist die hohle Kolbenstange mit zwei seitlichen Öffnungen derart versehen, daß die eine Öffnung vor der Beendigung des Kolbenhubes aus dem Druckraum heraustritt.Electric switch with arc extinguishing by compressed air The invention refers to an electrical switch with arc extinguishing by compressed air, which is generated in a piston pump during the switch-off process and by means of a hollow piston rod connected to the piston and the hollow, movable one Contact from the pressure chamber is fed to the interruption point. According to the invention the hollow piston rod is provided with two side openings so that the an opening emerges from the pressure chamber before the end of the piston stroke.

Durch die Anordnung nach der Erfindung wird vermieden, .daß am Ende des Kolbenhubes der Kolben auf den Boden des Zylinders grob aufstößt. Weil gemäß der Erfindung von den beiden vorhandenen Öffnungen die eine aus .dem Druckraum des Zylinders heraustritt, bevor der Schalter die endgültige Ausschaltstellung erreicht, kann von diesem Augenblick an die Druckluft nur noch durch die zweite Öffnung aus dem Druckraum entweichen. Es tritt also eine gewisse Bremsung des Kolbens ein, während vorher, solange ein Anblasen des Lichtbogens erforderlich war, die Druckluft .durch beide Öffnungen dem Lichtbogen zugeführt wurde und keine nennenswerte Bremsung eintrat.The arrangement according to the invention avoids .that at the end of the piston stroke the piston roughly hits the bottom of the cylinder. Because according to the invention of the two existing openings the one from .dem pressure chamber of the Cylinder emerges before the switch reaches the final switch-off position, From this moment on, the compressed air can only come out through the second opening escape the pressure chamber. So there is a certain braking of the piston while before, as long as it was necessary to blow the arc, the compressed air .by both openings were fed into the arc and no significant braking occurred.

Zweckmäßig wird diejenige Öffnung, welche nach dem Erlöschen des Lichtbogens aus dem Zylinder austritt, größer gemacht als die bleibende Verbindungsöffnung.The opening that opens after the arc has been extinguished is useful exiting the cylinder, made larger than the remaining connection opening.

Auf der Zeichnung ist ein Ausführungsbeispiel ,des Schalters nach der Erfindung dargestellt.In the drawing is an embodiment of the switch according to of the invention shown.

Der Kolben 3 ist rings um den beweglichen Kontakt 2 befestigt und bewegt sich in einem Zylinder q., durch dessen Deckel der Kontakt 2 hindurchgeht. Eine Feder 6 wirkt auf den Kolben im Öffnungssinne der Kontakte ein.The piston 3 is fixed around the movable contact 2 and moves in a cylinder q., through the cover of which the contact 2 passes. A spring 6 acts on the piston in the opening direction of the contacts.

Die den beweglichen Kontakt bildende Kolbenstange 2 ist hohl ausgebildet und nach vorn hin offen. Der Zylinder und der Innenraum des Kontaktes 2 stehen miteinander durch zwei in der Wandung des Kontaktes vorgesehene öffnungen 7 und 8 in Verbindung. Beim Öffnen des Kontaktes vermittels der bei 5 angedeuteten Antrieborgarie gelangt die Druckluft aus dem Zylinder q. durch beide Öffnungen 7 und 8 in das Innere des Kontaktes 2 und strömt gegen den Lichtbogen und den festen Kontakt i, indem sie aus dem düsenförmig ausgebildeten Ende des Kontaktes 2 austritt. Gegen Ende .der öffnungsbewegung des Kontaktes, wenn der Lichtbogen erloschen ist, tritt die Öffnung 7 aus dem Zylinder q. aus, so daß die komprimierte Luft, welche nur noch durch die kleine Öffnung 8 entweichen kann, eine gewisse Bremsung auf den Kolben 3 und den beweglichen Kontakt ausübt. Trotz der schnellen anfänglichen Öffnungsbewegung ist also eine langsam auslaufende Endbewegung erzielt.The piston rod 2 forming the movable contact is hollow and open to the front. The cylinder and the interior of the contact 2 are together through two openings 7 and 8 provided in the wall of the contact. When the contact is opened, the drive mechanism indicated at 5 arrives the compressed air from the cylinder q. through both openings 7 and 8 into the interior of the Contact 2 and flows against the arc and the fixed contact i by emerges from the nozzle-shaped end of the contact 2. Towards the end of the Opening movement of the contact, when the arc is extinguished, the opening occurs 7 from the cylinder q. off, so that the compressed air, which only passes through the small opening 8 can escape, a certain braking on the piston 3 and the exerts moving contact. Despite the quick initial opening movement it is thus achieved a slowly tapering end movement.

Claims (1)

PATENTANSPRUCH: Elektrischer Schalter mit Lichtbogenlöschung durch Druckluft, die, während des Ausschaltvorganges in einer Kolbenpumpe erzeugt und vermittels einer mit dem Kolben verbundenen hohlen Kolbenstange und dem hohl ausgeführten, beweglichen Kontakt au: dem Druckraum der Unterbrechungsstelle zugeleitet wird, dadurch gekennzeichnet, daß die hohle Kolbenstange mit zwei seitlichen öffnungen derart versehen ist, daß die eine öffnung vor der Beendigung des Kolbenhubes aus dem Druckraum heraustritt.PATENT CLAIM: Electric switch with arc extinguishing Compressed air that is generated in a piston pump during the switch-off process and by means of a hollow piston rod connected to the piston and the hollow piston rod movable contact is fed to the pressure chamber of the interruption point, characterized in that the hollow piston rod has two lateral openings is provided in such a way that one opening closes before the end of the piston stroke emerges from the pressure chamber.
DEA69933D 1934-03-09 1933-07-04 Electric switch with arc extinguishing by compressed air Expired DE619806C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR770388T 1934-03-09

Publications (1)

Publication Number Publication Date
DE619806C true DE619806C (en) 1935-10-10

Family

ID=9683232

Family Applications (2)

Application Number Title Priority Date Filing Date
DEA69933D Expired DE619806C (en) 1934-03-09 1933-07-04 Electric switch with arc extinguishing by compressed air
DEA72774D Expired DE647042C (en) 1934-03-09 1934-03-17 Compressed air switch

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEA72774D Expired DE647042C (en) 1934-03-09 1934-03-17 Compressed air switch

Country Status (4)

Country Link
US (1) US2039838A (en)
BE (1) BE403914A (en)
DE (2) DE619806C (en)
FR (1) FR770388A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1132622B (en) * 1956-03-09 1962-07-05 Frobert Michaelis Dipl Ing Compressed air switch, preferably circuit breaker or switch disconnector
DE1166326B (en) * 1954-12-24 1964-03-26 Westinghouse Electric Corp Electric switch
DE1206056B (en) * 1963-09-12 1965-12-02 Siemens Ag Electric switch
DE1223918B (en) * 1960-02-26 1966-09-01 Westinghouse Electric Corp Electric switch with a compression device
DE1255763B (en) * 1961-03-22 1967-12-07 Licentia Gmbh Switching device with compressed air blowing of the contact pieces

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764501C (en) * 1938-09-21 1953-04-27 Delle Atel Const Electr Electric switch with arc extinguishing by a flowing extinguishing agent
FR876971A (en) * 1941-06-18 1942-11-24 Delle Atel Const Electr Improvements to self-blowing electric switches
NL72111C (en) * 1946-05-21
DE957410C (en) * 1952-12-03 1957-01-31 Elektro App Bau Brechtel & Har Single pole load switch
CH315441A (en) * 1953-08-01 1956-08-15 Bbc Brown Boveri & Cie Compression device for generating the pressure of the gas for arc extinguishing on a switch
CH334100A (en) * 1955-09-03 1958-11-15 Bbc Brown Boveri & Cie Circuit breaker
US2916568A (en) * 1957-10-21 1959-12-08 Ite Circuit Breaker Ltd Contact air cooling system
AT235384B (en) * 1961-08-25 1964-08-25 Sprecher & Schuh Ag Compressed gas switch with current-dependent extinguishing agent flow
US3189720A (en) * 1962-03-02 1965-06-15 Wintriss George Electric control switch with self locking contact

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166326B (en) * 1954-12-24 1964-03-26 Westinghouse Electric Corp Electric switch
DE1132622B (en) * 1956-03-09 1962-07-05 Frobert Michaelis Dipl Ing Compressed air switch, preferably circuit breaker or switch disconnector
DE1223918B (en) * 1960-02-26 1966-09-01 Westinghouse Electric Corp Electric switch with a compression device
DE1255763B (en) * 1961-03-22 1967-12-07 Licentia Gmbh Switching device with compressed air blowing of the contact pieces
DE1206056B (en) * 1963-09-12 1965-12-02 Siemens Ag Electric switch

Also Published As

Publication number Publication date
DE647042C (en) 1937-06-26
BE403914A (en) 1934-07-31
US2039838A (en) 1936-05-05
FR770388A (en) 1934-09-12

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