DE638580C - Switch for large switching currents with arc extinguishing by a blowing current - Google Patents

Switch for large switching currents with arc extinguishing by a blowing current

Info

Publication number
DE638580C
DE638580C DEA66541D DEA0066541D DE638580C DE 638580 C DE638580 C DE 638580C DE A66541 D DEA66541 D DE A66541D DE A0066541 D DEA0066541 D DE A0066541D DE 638580 C DE638580 C DE 638580C
Authority
DE
Germany
Prior art keywords
contact
hollow
switch according
switch
nozzle
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
DEA66541D
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France 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
Priority to NL65476D priority Critical patent/NL65476B/xx
Priority to DEA66128D priority patent/DE626961C/en
Application filed by BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Priority to DEA66541D priority patent/DE638580C/en
Priority to US671823A priority patent/US2022241A/en
Priority to NL65476A priority patent/NL36382C/xx
Priority to FR756311D priority patent/FR756311A/en
Priority to BE396640D priority patent/BE396640A/xx
Priority to GB15921/33A priority patent/GB412403A/en
Priority to GB15918/33A priority patent/GB414491A/en
Priority to NL68870A priority patent/NL36467C/xx
Application granted granted Critical
Publication of DE638580C publication Critical patent/DE638580C/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
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/75—Liquid-break switches, e.g. oil-break
    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
    • H01H33/7046—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Description

Schalter für große Schaltströme mit Lichtbogenlöschung durch einen Blasstrom Die Erfahrung zeigt, daß zur Beherrschung elektrodynamischer Kräfte, welche an der Übergangsstelle zwischen dein beweglichen und feststehenden Kontakt in elektrischen Luft- oder Flüssigkeitsschaltern für hohe Stromstärken auftreten, mindestens einer der Kontakte unterteilt werden muß, damit der Stromübergang gleichzeitig an mehreren Punkten stattfindet. Auf diese Weise verkleifiert man die Strohdichte an den einzelnen Kontaktstellen und dadurch die elektrodynamischen Abstoßungskräfte.Switches for large switching currents with arc quenching by one Blow current Experience shows that to control electrodynamic forces, which at the transition point between your moving and stationary contact in electrical Air or liquid switches for high currents occur, at least one the contacts must be divided so that the current transfer to several at the same time Points takes place. In this way, the straw density is covered up on the individual Contact points and thereby the electrodynamic repulsive forces.

Man hat daher mindestens einen der Schalterkontakte aus segmentförmig unterteilten, unter Federwirkung stehenden Kontaktelementen aufgebaut. Schalter mit solchen Kontakten haben den Nachteil, daß an der Berührungsstelle zwischen dem festen und dem beweglichen Kontakt Brennstellen auftreten können, die den Betrieb des Schalters nachteilig beeinflussen.You therefore have at least one of the switch contacts from segment-shaped subdivided contact elements under spring action. counter with such contacts have the disadvantage that at the point of contact between the Fixed and moving contact burns can occur that affect the operation of the switch adversely affect.

Gegenstand der Erfindung ist nun ein Schalter für große Schaltströme mit Lichtbogenlöschung durch einen Blasstrom und mit einem Hohlkontakt, der aus segmentförmig unterteilten, unter Federwirkung stehenden Kontaktelementen besteht, die den Stromübergang zwischen dem festen und dem beweglichen Schalterkontakt vermitteln, bei dem erfindungsgemäß die Bildung von Brennstellen dadurch beseitigt ist, daß die Kontaktsegmente so geformt sind, daß der der Kontaktstelle zuströmende und von ihr abströmende Bl,asstrom düsenartig geführt ist, und nachgiebig zwischen zwei konzentrisch ineinandergeschobenen metallischen Zylinderwandungen in der Weise angeordnet sind, daß sich die innere Zylinderwand bis in die Nähe der schmalen Berührungszone des Hohlkontaktes mit dem Gegenkontakt erstreckt.The invention now relates to a switch for large switching currents with arc quenching by a blowing current and with a hollow contact that consists of consists of contact elements subdivided into segments and subject to spring action, which mediate the current transfer between the fixed and the movable switch contact, in which, according to the invention, the formation of focal points is eliminated in that the contact segments are shaped so that the contact point flowing towards and from Your outflowing Bl, asstrom is guided like a nozzle, and flexible between two arranged concentrically nested metallic cylinder walls in the way are that the inner cylinder wall is close to the narrow contact zone of the hollow contact with the mating contact extends.

In der Zeichnung sind -Ausführungsbeispiele der Erfindung in Fig. i und a schematisch im Längsschnitt durch den Hohlkontakt dargestellt..In the drawing, exemplary embodiments of the invention are shown in FIG. i and a shown schematically in longitudinal section through the hollow contact ..

Der Hohlkontakt a bildet den festen Kontakt eines Schalters mit dem beweglichen Stiftkontakt b als Gegenkontakt. Der Hohlkontakt besteht aus zwei konzentrischen Hohlzylindern cl, c2 und einem Bodenteil g für die Befestigung des Hohlkontaktes. In dem Ringraum zwischen den beiden Hohlzylindern sind die Kontaktsegmente d nachgiebig mittels Federn gelagert, die sich gegen den äußeren Zylinder c2 abstützen. Der Ringraum zwischen den einander umgreifenden Wänden des Hohlkontaktes ist auf der dem Gegenkontakt zugekehrten Stirnseite des Hohlkontaktes durch einen scheibenförmigen Körper e abgedeckt, der aus Metall bestehen kann und dann als Abbrennkontakt dient. Der innere Zylinder cl erstreckt sich in die Nähe der schmalen Berührungszone f zwischen den Kontaktsegmenten des Hohlkontaktes ttnd dem Gegenkontakt, so daß die Möglichkeit besteht, daß er unter der Einwirkung des der Schaltbewegung entgegengesetzt gerichteten Blasstromes den Lichtbogenansatzpunkt übernehmen kann. Auf diese Weise werden die Kontaktsegmente gegen die zerstörende Wirkung des öffnungslichtbogens geschützt, und es wird gleichzeitig eine freie Blasöffnung geschaffen. Wieg ersichtlich, sind die Kontakte des Schalte so geformt, daß der der Kontaktstelle z°' strömende und von ihr abströmende Blag;-P## strom. düsenartig geführt ist.The hollow contact a forms the fixed contact of a switch with the movable pin contact b as a mating contact. The hollow contact consists of two concentric hollow cylinders cl, c2 and a base part g for fastening the hollow contact. In the annular space between the two hollow cylinders, the contact segments d are resiliently mounted by means of springs which are supported against the outer cylinder c2. The annular space between the mutually engaging walls of the hollow contact is covered on the end face of the hollow contact facing the mating contact by a disk-shaped body e, which can be made of metal and then serves as a burn-off contact. The inner cylinder cl extends in the vicinity of the narrow contact zone f between the contact segments of the hollow contact ttnd the mating contact, so that there is the possibility that it can take over the arc starting point under the action of the blowing current directed in the opposite direction to the switching movement. In this way, the contact segments are protected against the destructive effect of the opening arc, and a free blow opening is created at the same time. As can be seen, the contacts of the switch shaped so that the blag flowing from the contact point z ° 'and flowing away from it; -P ## current. is guided like a nozzle.

Soll der zur Löschung des Lichtbogens dienende Blasstrom durch ein strömendes Löschmittel erzeugt werden, so wird man mit Vorteil den sonst als Abbrandring dienenden Teil e des Schaltstückes aus Isolierstoff ausführen. Auch wird es unter Umständen zweckmäßig sein, den Hohlkontakt außen mit einer Isolierhülse gegen den Lichtbogen zu schützen.Should the blowing current used to extinguish the arc go through a flowing extinguishing agent are generated, so one is with advantage the otherwise as a burn-up ring Make the serving part e of the contact piece made of insulating material. Also it will be under It may be useful to put the hollow contact against the outside with an insulating sleeve Protect arc.

Die Löschwirkung wird erheblich verstärkt, wenn auch der mittlere Zylinder cl des Hohlkontaktes in Form einer Düse ausgebildet wird (Fig. 2). Es ist vorteilhaft, den den Ringraum des Hohlkontaktes abdeckenden Teil e2 aus Isolierstoff derart düsenförmig auszubilden und ihn. mit dem mittleren Zylinder des Hohlkontaktes so zusammenzubauen, daß er eine Verlängerung desselben darstellt.The extinguishing effect is considerably increased, albeit the medium one Cylinder cl of the hollow contact is designed in the form of a nozzle (Fig. 2). It is advantageous, the part e2 covering the annular space of the hollow contact made of insulating material in such a nozzle-shaped manner and him. with the middle cylinder of the hollow contact to assemble so that it is an extension of the same.

Claims (6)

PATENTANSPRÜCHE: i. Schalter für große Schaltströme mit Lichtbogenlöschung durch einen Blasstrom und mit einem Hohlkontakt, der aus segmentförmig unterteilten, unter Federwirkung stehenden Kontaktelementen besteht, die den Stromübergang zwischen dem festen und dem beweglichen Schalterkontakt vermitteln, dadurch gekennzeichnet, daß die Kontaktsegmente so geformt sind, daß der der Kontaktstelle zuströmende und von ihr abströmende Blasstrom düsenartig ,geführt ist, und nachgiebig zwischen zwei konzentrisch ineinandergeschobenen metallischen &ylinderwandungen in der Weise angerdnet sind, daß sich die innere Zylinderwand bis in die Nähe der schmalen Berührungszone des Hohlkontaktes mit dem Gegenkontakt erstreckt. PATENT CLAIMS: i. Switches for large switching currents with arc quenching by a blow stream and with a hollow contact, which is made up of segmented, there is spring action contact elements that transfer the current between convey the fixed and the movable switch contact, characterized in that that the contact segments are shaped so that the flowing towards the contact point and from her outflowing blow stream nozzle-like, guided, and flexible between two concentrically nested metallic & ylinderwandungen in the way are indicated that the inner cylinder wall extends up to the vicinity of the narrow contact zone of the hollow contact with the mating contact extends. 2. Schalter nach Anspruch i, dadurch gekennzeichnet, daß der Ringraum zwischen den einander umgreifenden Zylindern des Hohlkontaktes auf der dem Gegenkontakt zugekehrten Stirnseite des Kontaktes durch einen scheibenförmigen Körper (e) aus Metall abgedeckt ist, der als Abbrandkontakt dient. 2. Switch according to claim i, characterized characterized in that the annular space between the encompassing cylinders of the Hollow contact on the face of the contact facing the mating contact a disc-shaped body (e) made of metal is covered, which acts as an erosion contact serves. 3. Schalter nach Anspruch 2, dadurch gekennzeichnet, daß der den Ringraum des Hohlkontaktes auf der dem Gegenkontakt zugekehrten Stirnseite abdeckende Scheibenkörper (e) aus Isolierstoff besteht. 3. Switch according to claim 2, characterized in that the the annular space of the hollow contact on the face side facing the mating contact covering the disc body (e) consists of insulating material. 4. Schalter nach Anspruch 3, dadurch gekennzeichnet, daß der den Ringraum des Hohlkontaktes abdeckende Isolierkörper (e2) düsenförmig derart ausgebildet ist, daß er eine Verlängerung der Düse des mittleren Zylinders (cl) des Hohlkontaktes darstellt. 4. Switch according to claim 3, characterized in that that the insulating body (e2) covering the annular space of the hollow contact is nozzle-shaped is designed such that it is an extension of the nozzle of the central cylinder (cl) represents the hollow contact. 5. Schalter nach Anspruch i bis 4., dadurch gekennzeichnet, daß der äußere Zylinder des Hohlkontaktes aus Isolierstoff besteht. 5. Switch according to claim i to 4, characterized in that that the outer cylinder of the hollow contact is made of insulating material. 6. Schalter nach Anspruch i bis q., dadurch gekennzeichnet, daß der doppelwandige Hohlkontakt von einer Isolierhülse umgeben ist, die auch denRingraurn auf der dem -Gegenkontakt zugekehrten Stirnseite verdeckt (Fig.2).6. Switch according to claims i to q., characterized in that the double-walled hollow contact is surrounded by an insulating sleeve, which also encircles the ring on the counter contact facing face covered (Fig. 2).
DEA66541D 1932-06-02 1932-07-12 Switch for large switching currents with arc extinguishing by a blowing current Expired DE638580C (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
NL65476D NL65476B (en) 1932-06-02
DEA66128D DE626961C (en) 1932-06-02 1932-06-02 Pressure chamber for high-performance AC fluid switch
DEA66541D DE638580C (en) 1932-06-02 1932-07-12 Switch for large switching currents with arc extinguishing by a blowing current
US671823A US2022241A (en) 1932-06-02 1933-05-19 Circuit interrupting device
NL65476A NL36382C (en) 1932-06-02 1933-05-30
FR756311D FR756311A (en) 1932-06-02 1933-05-31 Extinguishing chamber for high power alternating current switches
BE396640D BE396640A (en) 1932-06-02 1933-05-31
GB15921/33A GB412403A (en) 1932-06-02 1933-06-01 Improvements in and relating to electric circuit breakers
GB15918/33A GB414491A (en) 1932-06-02 1933-06-01 Improvements in and relating to alternating current power circuitbreakers
NL68870A NL36467C (en) 1932-06-02 1934-03-23

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEA66128D DE626961C (en) 1932-06-02 1932-06-02 Pressure chamber for high-performance AC fluid switch
DEA66541D DE638580C (en) 1932-06-02 1932-07-12 Switch for large switching currents with arc extinguishing by a blowing current

Publications (1)

Publication Number Publication Date
DE638580C true DE638580C (en) 1936-11-19

Family

ID=31950124

Family Applications (2)

Application Number Title Priority Date Filing Date
DEA66128D Expired DE626961C (en) 1932-06-02 1932-06-02 Pressure chamber for high-performance AC fluid switch
DEA66541D Expired DE638580C (en) 1932-06-02 1932-07-12 Switch for large switching currents with arc extinguishing by a blowing current

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEA66128D Expired DE626961C (en) 1932-06-02 1932-06-02 Pressure chamber for high-performance AC fluid switch

Country Status (6)

Country Link
US (1) US2022241A (en)
BE (1) BE396640A (en)
DE (2) DE626961C (en)
FR (1) FR756311A (en)
GB (2) GB414491A (en)
NL (3) NL36382C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197156B (en) * 1963-03-06 1965-07-22 Siemens Ag Gas pressure switch
DE1207470B (en) * 1961-05-19 1965-12-23 Bbc Brown Boveri & Cie Electrical switchgear for high currents
DE3412824A1 (en) * 1984-04-05 1985-10-17 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim ELECTRIC LOAD SWITCH, ESPECIALLY FOR USE IN MEDIUM VOLTAGE SWITCHGEAR

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425147A (en) * 1944-06-29 1947-08-05 Westinghouse Electric Corp Circuit interrupter
FR920442A (en) * 1945-10-03 1947-04-08 Merlin Gerin Interrupting chamber for alternating current
BE470474A (en) * 1946-01-21
US2612576A (en) * 1946-06-12 1952-09-30 Lange Emil Electric circuit breaker
DE1199367B (en) * 1956-03-27 1965-08-26 Westinghouse Electric Corp Electric switch
US2927182A (en) * 1958-02-27 1960-03-01 Gen Electric Fluid blast circuit interrupter
US2997564A (en) * 1958-09-19 1961-08-22 Westinghouse Electric Corp Circuit interrupter
GB869787A (en) * 1958-10-23 1961-06-07 Asea Ab Oil-blast electric circuit-breaker for high interruption currents

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207470B (en) * 1961-05-19 1965-12-23 Bbc Brown Boveri & Cie Electrical switchgear for high currents
DE1197156B (en) * 1963-03-06 1965-07-22 Siemens Ag Gas pressure switch
DE3412824A1 (en) * 1984-04-05 1985-10-17 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim ELECTRIC LOAD SWITCH, ESPECIALLY FOR USE IN MEDIUM VOLTAGE SWITCHGEAR

Also Published As

Publication number Publication date
US2022241A (en) 1935-11-26
GB414491A (en) 1934-08-09
DE626961C (en) 1936-03-05
NL36382C (en) 1935-09-16
BE396640A (en) 1933-06-30
NL36467C (en) 1935-09-16
NL65476B (en)
GB412403A (en) 1934-06-28
FR756311A (en) 1933-12-07

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