US2060282A - Electric circuit breaker with compressed gas blow-out - Google Patents

Electric circuit breaker with compressed gas blow-out Download PDF

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Publication number
US2060282A
US2060282A US673624A US67362433A US2060282A US 2060282 A US2060282 A US 2060282A US 673624 A US673624 A US 673624A US 67362433 A US67362433 A US 67362433A US 2060282 A US2060282 A US 2060282A
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US
United States
Prior art keywords
nozzle
compressed gas
contact
circuit breaker
electric circuit
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 - Lifetime
Application number
US673624A
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English (en)
Inventor
Clerc Andre
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
Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US2060282A publication Critical patent/US2060282A/en
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Expired - Lifetime 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
    • H01H33/70—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
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle

Definitions

  • the present invention relates to a circuitbreaker with'compressed gas blow out in which the arc is developed along the axis of the gas blast and in which the movable contact opens .the circuit by being displaced approximately in the direction of the gas blast whilst traversing a zone at atmospheric pressure or a zone in which the pressure is approxmiately of that order.
  • An object of the invention consists in means to blow the gas blast uniformly around the arc struck between the contacts and parallel to the movable contact displacement, said means comprising a blowing nozzle electrically insulated from the contacts and directing the gas blast against the arc, a pipe feeding said nozzle with compressed gas, the contacts, nozzle and pipe being disposed in the same straight axis.
  • Another object of the invention consists in disposing diaphragms concentrically around several portions of the arc.
  • Figs. 1, 2, and 3 of the annexed drawing show diagrammatically and by way of example three embodiments of circuit-breakers in accordance with 'the invention.
  • l represents the movable contact, 2 the stationary contact and 3 the nozzle by means of which the gas blast whose direction of flow is indicated by arrows is directed onto the arc.
  • Said nozzle is fed with i compressed gas by means ofa pipe [3 in connection with the compressor, not represented in the drawing.
  • the lever operating the movable contact is indicated by II.
  • the electrical connections are obtained by means vof the conductors 4and'5; the conductor 5 is connected to a sliding contact 6 and the displacement of the movable contact takes place strictly along the axis of the gas blast.
  • the contacts are situated in the interior of a chamber 8, preferably very spacious and provided with openings suiliciently large to prevent an appreciable increase in pressure at the moment of operation of the circuit-breaker;
  • the length of the arc is restricted to the disinsulated from said contacts, the nozzle being duction in the pressure of the gas blast used.
  • this distance should be as short as possible, but at least equal to the distance corresponding to the striking voltage.
  • the main portion of the arc is developed in a zone under atmospheric pressure.
  • the stationary contact can however also be situated in the interior of the nozzle, but in such 15 manner that its foremost extremity on which the arc is struck will lie on a level or slightly beyond the level of the orifice of the nozzle as indicated in Fig. 2.
  • the constricted zone of a gas stream issuing from a nozzle is to a certain 20 extent displaced forward in front of the orifice of this latter.
  • the stationary contact is entirely situated outside said nozzle and a convergent stream is obtained about the contact by surrounding same. by a convergent diaphragm II.
  • a diaphragm of this kind or several such diaphragms disposed one behindthe other can also be utilized in front of convergent nozzles in view of reinforcing their action.
  • These supplementary diaphragms are indicated by H and H'. in Figs.1and2.
  • a fixed ,contact anda movable contact adapted 'to normally rest snugly ,against their end surfaces, means to retract the mbvabl'e contact from the fixed one in a rectilinear movement, a nozzle for blowing a compressed gas around an arc between the contacts in the retracting direction of the movable contact, said fixed contact being arranged outside the nozzle, and a converging diaphragm secured concentrically around the end surface of the fixed contact and electrically insulated from both contacts.
  • a stationary contact and a movable contact a stationary contact and a movable contact, a. nozzle for blowing a stream of compressed gas axially around the arc in the direction of separation of the movable contact and diaphragms disposed concentrically around several portions of the arc and behind said nozzle when seen in the direction of blast, said diaphragms being convergent in said direction of blast.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
US673624A 1932-06-04 1933-05-31 Electric circuit breaker with compressed gas blow-out Expired - Lifetime US2060282A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1932A0066153 DE687791C (de) 1932-06-04 1932-06-04 Elektrischer Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
DEA83361D DE742308C (de) 1932-06-04 1937-06-23 Elektrischer Schalter mit Beblasung des Lichtbogens durch ein Druckmittel

Publications (1)

Publication Number Publication Date
US2060282A true US2060282A (en) 1936-11-10

Family

ID=32094479

Family Applications (2)

Application Number Title Priority Date Filing Date
US673624A Expired - Lifetime US2060282A (en) 1932-06-04 1933-05-31 Electric circuit breaker with compressed gas blow-out
US214489A Expired - Lifetime US2343917A (en) 1932-06-04 1938-06-18 Electric circuit breaker with compressed fluid blowout

Family Applications After (1)

Application Number Title Priority Date Filing Date
US214489A Expired - Lifetime US2343917A (en) 1932-06-04 1938-06-18 Electric circuit breaker with compressed fluid blowout

Country Status (6)

Country Link
US (2) US2060282A (no)
BE (2) BE396026A (no)
CH (3) CH166933A (no)
DE (2) DE687791C (no)
FR (3) FR756014A (no)
NL (2) NL51424C (no)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455998A (en) * 1943-12-20 1948-12-14 Electrical Eng Equipment Co Electrical load breaking device
US2470628A (en) * 1944-05-24 1949-05-17 Westinghouse Electric Corp Circuit interrupter
US2481996A (en) * 1944-04-22 1949-09-13 Ferguson Pailin Ltd Air blast circuit breaker
US2494661A (en) * 1939-05-12 1950-01-17 Latour Andre Gas blast circuit breaker
US2529145A (en) * 1939-07-27 1950-11-07 Delle Atel Const Electr Pneumatic circuit breaker
US2568381A (en) * 1945-03-23 1951-09-18 Westinghouse Electric Corp Circuit interrupter
US2632828A (en) * 1947-01-15 1953-03-24 Asea Ab Arrangement in electric air blast circuit breaker
US2749411A (en) * 1953-04-27 1956-06-05 Allis Chalmers Mfg Co Circuit breaker with electrode disposed between an interrupting device and a contactopening
US2997563A (en) * 1955-05-27 1961-08-22 Westinghouse Canada Ltd Circuit interrupters
US3657495A (en) * 1969-05-09 1972-04-18 Merlin Gerin High-voltage disconnecting switch with sliding contact

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898025C (de) * 1934-06-29 1953-11-26 Erwin Marx Dr Ing Druckgasschalter mit einander gegenueberstehenden Elektroden
DE764501C (de) * 1938-09-21 1953-04-27 Delle Atel Const Electr Elektrischer Schalter mit Lichtbogenloeschung durch ein stroemendes Loeschmittel
US2555588A (en) * 1948-08-26 1951-06-05 Southern States Equipment Corp Electric switch
DE911280C (de) * 1950-08-21 1954-05-13 Licentia Gmbh Elektrischer Schalter mit Lichtbogenloeschung durch ein stroemendes Druckmittel, wie Druckgas
GB909822A (en) * 1957-11-14 1962-11-07 Reyrolle A & Co Ltd Improvements relating to gas-blast electric circuit-breakers

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494661A (en) * 1939-05-12 1950-01-17 Latour Andre Gas blast circuit breaker
US2529145A (en) * 1939-07-27 1950-11-07 Delle Atel Const Electr Pneumatic circuit breaker
US2455998A (en) * 1943-12-20 1948-12-14 Electrical Eng Equipment Co Electrical load breaking device
US2481996A (en) * 1944-04-22 1949-09-13 Ferguson Pailin Ltd Air blast circuit breaker
US2470628A (en) * 1944-05-24 1949-05-17 Westinghouse Electric Corp Circuit interrupter
US2568381A (en) * 1945-03-23 1951-09-18 Westinghouse Electric Corp Circuit interrupter
US2632828A (en) * 1947-01-15 1953-03-24 Asea Ab Arrangement in electric air blast circuit breaker
US2749411A (en) * 1953-04-27 1956-06-05 Allis Chalmers Mfg Co Circuit breaker with electrode disposed between an interrupting device and a contactopening
US2997563A (en) * 1955-05-27 1961-08-22 Westinghouse Canada Ltd Circuit interrupters
US3657495A (en) * 1969-05-09 1972-04-18 Merlin Gerin High-voltage disconnecting switch with sliding contact

Also Published As

Publication number Publication date
NL51424C (no) 1941-11-15
BE396026A (no) 1933-06-30
NL55655C (no) 1943-12-15
CH211607A (fr) 1940-09-30
CH205647A (fr) 1939-06-30
FR756014A (fr) 1933-12-04
FR839521A (fr) 1939-04-05
FR49585E (fr) 1939-05-11
US2343917A (en) 1944-03-14
DE742308C (de) 1943-11-27
BE428712A (no) 1938-07-30
DE687791C (de) 1940-02-06
CH166933A (fr) 1934-01-31

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