US1967989A - Blow-out chamber with insulating grids - Google Patents

Blow-out chamber with insulating grids Download PDF

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Publication number
US1967989A
US1967989A US699585A US69958533A US1967989A US 1967989 A US1967989 A US 1967989A US 699585 A US699585 A US 699585A US 69958533 A US69958533 A US 69958533A US 1967989 A US1967989 A US 1967989A
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US
United States
Prior art keywords
grid
chamber
blast
central channel
arc
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
US699585A
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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 ELECTRIUES DE DELLE
CONST ELECTRIUES DE DELLE ATEL
Original Assignee
CONST ELECTRIUES DE DELLE ATEL
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 CONST ELECTRIUES DE DELLE ATEL filed Critical CONST ELECTRIUES DE DELLE ATEL
Application granted granted Critical
Publication of US1967989A publication Critical patent/US1967989A/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
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
    • 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode

Definitions

  • the object of the present invention is to obviate these disadvantages. It consists in providing the interior of the chamber in which the arc is developed with at least one grid of insulating material in the'centre of which is provided a large channel for the passage of the arc.
  • the circuit-breaker shown in Fig. 1 comprises a fixed contact 1 and amovable contact 2.
  • the contact 1 is provided with an arcing contact 1' and the movable contact with an arcing contact 2.
  • This latter is flxed to a pipe 3 through which is admitted the blow out fluid the direction of which is indicated by arrows.
  • the movable contact 2 and is in electrical communication with this latter through a sliding contact 4.
  • the contacts and arcing contacts are disposed on the interior of the converging nozzle 5 situated at the extremity of the pipe 3. This nozzle communicates with the divergent base 6 of the chim ney '7.
  • auxiliary electrodes 8 mounted on insulated conductors are in electrical contact with the movable contact through resistances 9 and the extreinity electrode 10 is directly connected to the fixed contact. All these electrodes as well as the arcing contact 2' are disposed along the common axis of the nozzle 5 and of the chimney '7. This latter near its outlet is provided with a flame baflle l1.
  • a grid 13 constituted by a thick plate of nonconducting material.
  • This grid is provided with a plurality of channels 14.
  • anv opening 12 is provided in the centre of this Germany November 25, 1932 rid and in the axis of the blow out chamber.
  • the grid is thus annular and the section of the central channel is preferably smaller than that of the blow out blast at the point where it penetrates into the channel 12.
  • the channel 12 may be of any shape whatsoever, cylindrical orotherwise. It is preferably conical such that its section diminishes in the direction of the blowout blast. In such a case, the narrowest part of the cone will have a smaller section than that of the blow out blast at the point where this latter penetrates into the cone.
  • the operation of the circuit breaker is as follows: The are developed on the opening of the contacts 1 and 2 is transferred through the influence of the blow out blast onto the members 10, 8, 8 and 2' and thus flnds itself disposed in a straight line in the centre of blast the envelope of which is indicated at 5' on the drawing. The fluid ionized by the arc-is dispelled towards the periphery of the chamber. Supposing the nonexistence of the grid 13, the ionized fluid will fill the space occupied by this grid and comprised between the wall of the chamber 7 and the external surface or the blow out blast.
  • the grid 13 accelerates upwardly the flow of ionized gases which are projected in the peripheric portion of the chamber are formed eddies which have a weak tendency only to flow upwardly.
  • the object of the channels 14 in the grid is to create in the lower peripheric portion of the chamber 7, comprised between said grid and its base 6, a slight increase in the pressure in the ionized fluid.
  • This pressure increase attenuates the circulation of the eddies in this space and accelerates the flow of the ionized fluid contained therein towards the peripheric portion of the upper part of the chamber 7 above the grid. Further, by their passage between the insulating walls of the channels 14 these gases are deionized.
  • the grid 13 will preferably be made of wood.
  • insulating grids may be disposed around each electrode situated in the central axis of the chimney.
  • similar grids may be disposed around portions of the are situated between two successive electrodes, as for example between the two electrodes 8 or between'the electrodes 8 and 10; in all such cases their position would be parallel to that of the grid 13 shown in Fig. 1.
  • the channels for the passage and for the deionization of the ionized fluid may be constituted in any other manner whatsoever.
  • FIG. 2 is shown an embodiment of the invention applied to a circuit-breaker in which the flxed contact 1 is hollow and funnel shaped, its orifice being closed by the movable contact 2 when in closed position. A portion of the are developed between the two contacts when the contact 2 is displaced in the direction of the arrow 16 is'drawn into the chamber '7 along the axis of this latter.
  • the interior of this chamber is provided with a grid 13 having channels 14 as well as a large central channel 12 converging in the direction of the blast indicatedby the arrows without references. The are traverses the grid through the channel 12.
  • a chamber in which a portion at least of the arc is developed means for directing a blast of insulating fluid against said contacts and into said chamber, in the interior .of said chamber an auxiliary electrode connected to one of said contacts through a resistance, and a grid of insulating material disposed around said auxiliary electrode.
  • a chamber in which a portion at least of the arc is developed at least one grid of insulating material in said chamber, said grid forming an annular ring with a plurality of peripheral channels and with a large central channel, means for disposing said are approximately in the axis of said central channel and for directing a blast of insulating fluid through said central channel, said central channel being concentric with the blow out blast and the section of said fluid blast at the point where it penetrates into said central channel being larger than the smallest section of said central channel.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
US699585A 1932-11-25 1933-11-24 Blow-out chamber with insulating grids Expired - Lifetime US1967989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA67826D DE652481C (de) 1932-11-25 1932-11-25 Elektrischer Blasschalter

Publications (1)

Publication Number Publication Date
US1967989A true US1967989A (en) 1934-07-24

Family

ID=7816638

Family Applications (1)

Application Number Title Priority Date Filing Date
US699585A Expired - Lifetime US1967989A (en) 1932-11-25 1933-11-24 Blow-out chamber with insulating grids

Country Status (4)

Country Link
US (1) US1967989A (enrdf_load_stackoverflow)
BE (2) BE399929A (enrdf_load_stackoverflow)
DE (1) DE652481C (enrdf_load_stackoverflow)
FR (2) FR765633A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441943A (en) * 1943-01-18 1948-05-18 Bbc Brown Boveri & Cie Gas blast circuit breaker
US2470628A (en) * 1944-05-24 1949-05-17 Westinghouse Electric Corp Circuit interrupter
US2570610A (en) * 1947-08-23 1951-10-09 Allis Chalmers Mfg Co Gas blast circuit breaker with trap for products of arcing
US2645695A (en) * 1949-02-23 1953-07-14 Allis Chalmers Mfg Co Electric circuit breaker with arcing contacts in skew blast
US2786118A (en) * 1953-01-29 1957-03-19 Licentia Gmbh High voltage switch
US3137779A (en) * 1957-11-05 1964-06-16 Latour Andre Circuit-breakers having magnetic blow-out means
US3379848A (en) * 1965-01-26 1968-04-23 Westinghouse Electric Corp Gas-blast circuit breaker having a movable tubular venting contact and a laterally arranged exhaust vent in the interrupting chamber

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764501C (de) * 1938-09-21 1953-04-27 Delle Atel Const Electr Elektrischer Schalter mit Lichtbogenloeschung durch ein stroemendes Loeschmittel
US2293513A (en) * 1939-10-11 1942-08-18 Gen Electric Electric air circuit breaker
DE762495C (de) * 1943-01-18 1953-04-27 Brown Ag Druckgasschalter
DE1056229B (de) * 1955-01-29 1959-04-30 Calor Emag Elektrizitaets Ag Elektrischer Schalter
CH389732A (fr) * 1960-09-21 1965-03-31 Inst Electrotechnique Chambre à éléments résistants pour l'extinction d'un arc de disjoncteur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441943A (en) * 1943-01-18 1948-05-18 Bbc Brown Boveri & Cie Gas blast circuit breaker
US2470628A (en) * 1944-05-24 1949-05-17 Westinghouse Electric Corp Circuit interrupter
US2570610A (en) * 1947-08-23 1951-10-09 Allis Chalmers Mfg Co Gas blast circuit breaker with trap for products of arcing
US2645695A (en) * 1949-02-23 1953-07-14 Allis Chalmers Mfg Co Electric circuit breaker with arcing contacts in skew blast
US2786118A (en) * 1953-01-29 1957-03-19 Licentia Gmbh High voltage switch
US3137779A (en) * 1957-11-05 1964-06-16 Latour Andre Circuit-breakers having magnetic blow-out means
US3379848A (en) * 1965-01-26 1968-04-23 Westinghouse Electric Corp Gas-blast circuit breaker having a movable tubular venting contact and a laterally arranged exhaust vent in the interrupting chamber

Also Published As

Publication number Publication date
DE652481C (de) 1937-11-01
FR765643A (fr) 1934-06-13
FR765633A (fr) 1934-06-12
BE399928A (enrdf_load_stackoverflow) 1933-12-30
BE399929A (enrdf_load_stackoverflow) 1933-12-30

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