US2786119A - Valve arrangement for air blast circuit breakers - Google Patents

Valve arrangement for air blast circuit breakers Download PDF

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Publication number
US2786119A
US2786119A US488213A US48821355A US2786119A US 2786119 A US2786119 A US 2786119A US 488213 A US488213 A US 488213A US 48821355 A US48821355 A US 48821355A US 2786119 A US2786119 A US 2786119A
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US
United States
Prior art keywords
cylinder
air
valve
air blast
circuit breakers
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
US488213A
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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 US2786119A publication Critical patent/US2786119A/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

Definitions

  • VALVE ARRANGEMENT FOR AIR BLAST CIRCUIT BREAKERS Filed Feb. 15, 1955 5 L I:::] 0 I/ 8 9 J c 2 2 0 f5 2/ I I 22 I6 /9 i 5 i 23 /s 17 IN VEN TOR.
  • the present invention relates to an arrangement in air blast circuit breakers, where the main breaking gap is arranged in a container, permanently filled with air, from which, when opening the circuit breaker, a flow of air passes across the breaking contacts.
  • the invention concerns a valve arrangement, by which the time for the air escape can be controlled in a simple way, so that it will not be longer than absolutely necessary for the extinction of the arc.
  • a separately operated outlet valve is arranged, which, when opened, allows the compressed air in the container to remove the movable contact to open position, said contact being provided with a valve member, which, when the contact comes into open position, again blocks the outlet for the compressed air.
  • the escape of compressed air from the container can, therefore, only take place during the time from separating the contacts until the movable contact reaches its open end position.
  • This latter time can, according to the invention, be regulated thereby that the movable contact is combined with a braking piston, which is movable in a cylinder, which is, over a throttling valve, in communication with the interior of the compressed air container.
  • 1 designates the compressed air container, which is filled with compressed air through a pipe line 2.
  • leading-through insulator 3 is inserted, which carries the stationary contact 4 of the circuit breaker.
  • the movable contact is formed as a cylinder 5, which is, at the lower end, provided with a bottom 6 carrying an arcing contact 7.
  • the movable contact is on the outside provided with a collar 8 serving as a braking piston and is movable in the cylinder 9, which, over a throttling valve 10, is in communication with the space in the cylinder 1.
  • the membrane 19 When operating air is delivered through the pipe line 21, the membrane 19 is moved to the left, and the valve member 18 is then also moved to the left against the end of the pipe 22.
  • the pressure of the air in the cylinder 1 will act on the cylinder 5 and move it downwards, whereby a flow of air occurs through the cylinder 5 across the foot-point of the are at the upper end of the cylinder and out through the opening 13 and further out through the opening in the bottom of the cylinder 15 and the opening 17 in the side wall of the cylinder 16.
  • the bottom 6 When the cylinder 5 reaches its lowermost position, the bottom 6 is tightening forced against the edge 14 in the bottom of the cylinder 15 and prevents thereby a further escape of air from the container 1.
  • the time, during which escape of air is to take place is regulated by means of the throttling valve 10, which determines the speed, at which the piston 8 moves in the cylinder 9.
  • An air blast circuit breaker comprising a container for compressed air, main breaking contacts forming a main gap near an air outlet from said container, an air blast valve arranged downstreamwardly of said breaking gap, and a blocking valve arranged between said breaking gap and said air blast valve, said blocking valve having a valve member fixed to the movable contact of said breaking gap.
  • a circuit breaker according to claim 1 comprising means forming an air space, a passage for the delivery of compressed air from said container to said space, and means whereby the said air blast valve when in its open position simultaneously closes the said passage and serves to close the movable contact.
  • a circuit breaker according to claim 1 comprising a damping piston actuated by the air in the container and connected to the movable contact, a cylinder within which the piston moves, means for admitting compressed air to said cylinder from the said container, and a throttling valve to control the passage of air to said cylinder to move said piston.

Landscapes

  • Fluid-Driven Valves (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)
US488213A 1954-02-17 1955-02-15 Valve arrangement for air blast circuit breakers Expired - Lifetime US2786119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE764647X 1954-02-17

Publications (1)

Publication Number Publication Date
US2786119A true US2786119A (en) 1957-03-19

Family

ID=20329968

Family Applications (1)

Application Number Title Priority Date Filing Date
US488213A Expired - Lifetime US2786119A (en) 1954-02-17 1955-02-15 Valve arrangement for air blast circuit breakers

Country Status (4)

Country Link
US (1) US2786119A (fr)
DE (1) DE1016345B (fr)
FR (1) FR1119362A (fr)
GB (1) GB764647A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999143A (en) * 1956-11-21 1961-09-05 Westinghouse Electric Corp Compressed-gas circuit interrupter
US3018352A (en) * 1958-10-10 1962-01-23 Asea Ab High tension air blast circuit breakers with a plurality of series connected breaking gaps per pole
US3133166A (en) * 1959-10-23 1964-05-12 Bbc Brown Boveri & Cie Compressed air actuated electric switch
US3780244A (en) * 1972-10-18 1973-12-18 Gen Electric Gas blast circuit breaker of the axial blast type
US4697055A (en) * 1984-06-08 1987-09-29 Merlin Gerin Arc extinction device for gas insulation electrical switchgear

Families Citing this family (17)

* 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
BE564461A (fr) * 1957-02-01
US2970198A (en) * 1957-02-18 1961-01-31 Westinghouse Electric Corp Compressed-gas circuit interrupter
GB828589A (en) * 1957-05-23 1960-02-17 Asea Ab Air-blast electric circuit-breaker
CH361319A (de) * 1958-02-04 1962-04-15 Moser Glaser & Co Ag Druckgasschalter
FR1237847A (fr) * 1959-06-24 1960-08-05 Merlin Gerin Perfectionnements au mode de commande des contacts des disjoncteurs pneumatiques
DE1221333B (de) * 1960-02-10 1966-07-21 Bbc Brown Boveri & Cie Steuerventil fuer den Druckluftzufluss zu den Schaltkammern von Druckluftschaltern
GB929319A (en) * 1960-10-15 1963-06-19 Asea Ab Improvements in air-blast electric circuit-breakers
GB936545A (en) * 1960-12-15 1963-09-11 Asea Ab Air blast electric circuit breaker
GB1023151A (en) * 1961-03-17 1966-03-23 English Electric Co Ltd Improvements in or relating to gas-blast circuit-breakers
BE625691A (fr) * 1961-12-07
DE1260589B (de) * 1962-03-09 1968-02-08 Ass Elect Ind Schaltventil fuer Druckgasschalter
DE1171051B (de) * 1962-05-07 1964-05-27 Siemens Ag Synchronschalter mit Pressgasloeschung
DE1212189B (de) * 1962-11-09 1966-03-10 Bbc Brown Boveri & Cie Impulsartig arbeitende Schalteinrichtung fuer Druckgasschalter
DE1216962B (de) * 1964-01-24 1966-05-18 Bbc Brown Boveri & Cie Einrichtung fuer Druckgasschalter
CH410109A (de) * 1964-07-13 1966-03-31 Bbc Brown Boveri & Cie Kontakteinrichtung für Druckgasschalter
DE1291405B (de) * 1965-05-04 1969-03-27 Magrini Fab Riun Scarpa Druckgas-Leistungsschalter

Citations (4)

* 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
GB561157A (en) * 1942-11-03 1944-05-08 British Thomson Houston Co Ltd Improvements in high voltage electric gas blast circuit breakers
US2575949A (en) * 1943-07-17 1951-11-20 Asea Ab Compressed air circuit breaker
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE647141C (de) * 1933-08-01 1937-06-29 Bbc Brown Boveri & Cie Elektrischer Schalter
DE674652C (de) * 1935-07-13 1939-04-21 Bbc Brown Boveri & Cie Schalteranordnung fuer hohe Leistungen
DE680030C (de) * 1936-12-12 1939-08-19 Bbc Brown Boveri & Cie Druckgasschalter mit Mehrfachunterbrechung

Patent Citations (4)

* 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
GB561157A (en) * 1942-11-03 1944-05-08 British Thomson Houston Co Ltd Improvements in high voltage electric gas blast circuit breakers
US2575949A (en) * 1943-07-17 1951-11-20 Asea Ab Compressed air circuit breaker
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999143A (en) * 1956-11-21 1961-09-05 Westinghouse Electric Corp Compressed-gas circuit interrupter
US3018352A (en) * 1958-10-10 1962-01-23 Asea Ab High tension air blast circuit breakers with a plurality of series connected breaking gaps per pole
US3133166A (en) * 1959-10-23 1964-05-12 Bbc Brown Boveri & Cie Compressed air actuated electric switch
US3780244A (en) * 1972-10-18 1973-12-18 Gen Electric Gas blast circuit breaker of the axial blast type
US4697055A (en) * 1984-06-08 1987-09-29 Merlin Gerin Arc extinction device for gas insulation electrical switchgear

Also Published As

Publication number Publication date
DE1016345B (de) 1957-09-26
FR1119362A (fr) 1956-06-19
GB764647A (en) 1956-12-28

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