US2724751A - Air blast circuit breaker - Google Patents

Air blast circuit breaker Download PDF

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Publication number
US2724751A
US2724751A US270169A US27016952A US2724751A US 2724751 A US2724751 A US 2724751A US 270169 A US270169 A US 270169A US 27016952 A US27016952 A US 27016952A US 2724751 A US2724751 A US 2724751A
Authority
US
United States
Prior art keywords
air
container
circuit breaker
piston
contacts
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
US270169A
Other languages
English (en)
Inventor
Forwald Haakon
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Application granted granted Critical
Publication of US2724751A publication Critical patent/US2724751A/en
Anticipated expiration legal-status Critical
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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
    • 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
    • H01H33/86—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve

Definitions

  • 3 designates the stationary contact of the circuit breaker which is attached ⁇ to the conductor 4 in the insulating bushing 5.
  • the movable contact 6 is of tubular form and is attached on a :piston 7, which moves in a cylinder 8 joined with the bottom 9 of the compressed air container.
  • the piston 7 is actuated upwards by a helical spring l0.
  • l11 is a sliding contact surrounding the tubular contact 6 for carrying the current to the cylinder 8 and the bottom 9 of fthe oon- 12 is ,the valve disc in an outlet valve which when in its #lower .position tightly rests against vthe ridge 13 on a cover 14.
  • the valve disc 12 is carried by a stem 15 which is joined with the operating piston L6 lfor the valve which piston is movable in the operating cylinder 17 and actuated downwards by the helical spring 18.
  • the cylinder 17 is at its lower end closed by a bottom 19 attached to the insulating pillar 20 carrying the circuit breaker.
  • 21 is the operating air pipeline which is made from some insulating material and is divided into two branches 22 and 23.
  • An air blast circuit breaker comprising a metal compressed air container having a capacity sutcient to contain a volume of air for at least one current interruption, a pipeline delivering compressed air to said container, insulating means serving as the sole support for said container and insulating it from earth, an air outlet opening in said container, a pair of contacts in said container in close proximity to said outlet, an insulating bushing projecting into said container and carrying one of the contacts of said pair, and valve means for controlling the ow of air from said container through said outlet opening for opening and closing said contacts.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Circuit Breakers (AREA)
US270169A 1951-02-09 1952-02-06 Air blast circuit breaker Expired - Lifetime US2724751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE312394X 1951-02-09

Publications (1)

Publication Number Publication Date
US2724751A true US2724751A (en) 1955-11-22

Family

ID=20307650

Family Applications (2)

Application Number Title Priority Date Filing Date
US25631D Expired USRE25631E (en) 1951-02-09 Air blast circuit breaker
US270169A Expired - Lifetime US2724751A (en) 1951-02-09 1952-02-06 Air blast circuit breaker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US25631D Expired USRE25631E (en) 1951-02-09 Air blast circuit breaker

Country Status (4)

Country Link
US (2) US2724751A (de)
CH (1) CH312394A (de)
FR (1) FR1050657A (de)
GB (1) GB713798A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972666A (en) * 1957-06-29 1961-02-21 Asea Ab Air blast circuit breakers with breaking gaps in compressed air containers carried by insulator pillars
US3073932A (en) * 1958-09-24 1963-01-15 Voigt & Haeffner Ag Pneumatic controls for high-voltage air blast circuit breakers
US3214542A (en) * 1961-04-11 1965-10-26 Westinghouse Electric Corp Circuit interrupters with pressurized interrupting assemblage and synchronized disconnecting means
US3418440A (en) * 1965-09-14 1968-12-24 Gen Electric Gas-blast circuit breaker

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073062B (de) * 1960-01-14 Voigt & Haeffner Aktiengesellschaft, Frankfurt/M Druckluftschalter mit einer dauernd mit Druckluft beaufschlagten Schaltkammer
DE1020397B (de) * 1954-06-04 1957-12-05 Asea Ab Mehrphasiger Druckluftschalter
DE1041569B (de) * 1955-10-05 1958-10-23 Asea Ab Druckluftschalter
BE564461A (de) * 1957-02-01
US2970198A (en) * 1957-02-18 1961-01-31 Westinghouse Electric Corp Compressed-gas circuit interrupter
CH361319A (de) * 1958-02-04 1962-04-15 Moser Glaser & Co Ag Druckgasschalter
DE1221333B (de) * 1960-02-10 1966-07-21 Bbc Brown Boveri & Cie Steuerventil fuer den Druckluftzufluss zu den Schaltkammern von Druckluftschaltern
GB979783A (en) * 1960-04-29 1965-01-06 Reyrolle A & Co Ltd Improvements relating to high-voltage electric circuit-breakers of the gas-blast type
FR1301864A (fr) * 1961-06-29 1962-08-24 Comp Generale Electricite Dispositif de coupure à auto-compression dans les gaz, notamment les gaz halogénés
BE625691A (de) * 1961-12-07
GB184999A (en) * 1962-05-07 1922-08-31 Harry Ormiston Ormiston An improved metallic paint or coating
CH403011A (de) * 1963-10-17 1965-11-30 Bbc Brown Boveri & Cie Einrichtung zur Steuerung von Auslassventilen bei Druckgasschaltern
CH410109A (de) * 1964-07-13 1966-03-31 Bbc Brown Boveri & Cie Kontakteinrichtung für Druckgasschalter
US3290469A (en) * 1964-09-30 1966-12-06 Westinghouse Electric Corp Compressed-gas circuit interrupter having cavitation means
DE1291405B (de) * 1965-05-04 1969-03-27 Magrini Fab Riun Scarpa Druckgas-Leistungsschalter
US3375335A (en) * 1965-11-22 1968-03-26 Gen Motors Corp Safety circuit switch with a pneumatic time delay return

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153400A (en) * 1936-12-14 1939-04-04 Gen Electric Electrical switch gear
US2306186A (en) * 1941-01-27 1942-12-22 Gen Electric High voltage electric circuit breaker
US2447656A (en) * 1944-05-24 1948-08-24 Westinghouse Electric Corp Compressed gas-operated circuit interrupter with position indicator
US2491112A (en) * 1947-07-05 1949-12-13 Allis Chalmers Mfg Co Gas blast breaker having two tanks and a tank interconnecting valve
US2507210A (en) * 1944-11-28 1950-05-09 Westinghouse Electric Corp Gas blast circuit breaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153400A (en) * 1936-12-14 1939-04-04 Gen Electric Electrical switch gear
US2306186A (en) * 1941-01-27 1942-12-22 Gen Electric High voltage electric circuit breaker
US2447656A (en) * 1944-05-24 1948-08-24 Westinghouse Electric Corp Compressed gas-operated circuit interrupter with position indicator
US2507210A (en) * 1944-11-28 1950-05-09 Westinghouse Electric Corp Gas blast circuit breaker
US2491112A (en) * 1947-07-05 1949-12-13 Allis Chalmers Mfg Co Gas blast breaker having two tanks and a tank interconnecting valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972666A (en) * 1957-06-29 1961-02-21 Asea Ab Air blast circuit breakers with breaking gaps in compressed air containers carried by insulator pillars
US3073932A (en) * 1958-09-24 1963-01-15 Voigt & Haeffner Ag Pneumatic controls for high-voltage air blast circuit breakers
US3214542A (en) * 1961-04-11 1965-10-26 Westinghouse Electric Corp Circuit interrupters with pressurized interrupting assemblage and synchronized disconnecting means
US3418440A (en) * 1965-09-14 1968-12-24 Gen Electric Gas-blast circuit breaker

Also Published As

Publication number Publication date
FR1050657A (fr) 1954-01-11
USRE25631E (en) 1964-08-18
GB713798A (en) 1954-08-18
CH312394A (de) 1955-12-31

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