US2803724A - Operating device for air blast circuit breakers - Google Patents

Operating device for air blast circuit breakers Download PDF

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Publication number
US2803724A
US2803724A US512243A US51224355A US2803724A US 2803724 A US2803724 A US 2803724A US 512243 A US512243 A US 512243A US 51224355 A US51224355 A US 51224355A US 2803724 A US2803724 A US 2803724A
Authority
US
United States
Prior art keywords
space
air
channel
piston
operating device
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
US512243A
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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 US2803724A publication Critical patent/US2803724A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87378—Second valve assembly carried by first valve head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87499—Fluid actuated or retarded

Definitions

  • the present invention relates to an operating device for air blast circuit breakers wherein the movable contact of the breaker is provided with a disc, which coacts with a member controlled by the operating air in such a way that the said member, when actuated by operating air, opens a communication between an operating space and the open air thus enabling the compressed air in the space, in which the contacts are arranged, to move the movable contact in the direction against the open position, the said disc being pneumatically coupled with said operating member, so that the movable contact is moved into the open position and retained in this position.
  • the advantage is gained'that the opening motion of the circuit breaker can be performed by a very limited amount of compressed air and the movable contact can be retained in the open position without any further consumption of operating air.
  • the movable contact at the beginning of the opening motion is separated from the operating member, and during the opening of the circuit breaker moves in an opposite direction to the said operating member, which has the advantage that the contacts of the circuit breaker during the opening motion are retained for a moment at a distance from each other most suitable for the extinction action.
  • a channel 13 which has for its purpose to allow the operating air to flow up to the upper side of the piston 11, so that the return of the piston 11 into the lower position is attained after a time interval, which is determined by the cross-section of the channel.
  • the piston 11 is by means of the stem 14 joined with a valve member 15, which on the lower side is provided with an annular shaped packing 16, which in the lower position of the valve member is tightly forced against the annular edges 17 and 18 of the gear housing. Between these edges there are one or more channels 19, by which the space 20 in the gear housing is brought into communication with the open air, when the valve member 15 is in its upper position.
  • the valve member 15 is provided with a tightening edge 30, which is forced against the packing 8 of the valve disc 7.
  • the movable contact is normally held in the upper position by a helical spring 31 acting against the valve member 15.
  • the cone 25, which closes the channel 26 when compressed air is delivered to the pipe line 12, is moved to the lower position by means of a helical spring 32, when the pipe line is evacuated.
  • the arrangement acts in the following way: When the circuit breaker is to be opened, compressed air is delivered to the pipe line 12, which compressed air acts on the lower side of the piston 11 and moves it upwards, so that the packing 16 leaves the tightening edges 17 and 18.
  • compressed air By this the space 20 in the gear housing is evacuated through the channels 19, and when the pressure in the space 20 is lowered, the compressed air in the container 3 will act on the movable contact 2 and move it downwards, until the packing 8 is forced against the tightening edge 30.
  • An operating device for an air blast circuit breaker comprising stationary and movable contacts enclosed in a container permanently filled with compressed air, a housing forming an auxiliary space in communication with said container through a channel in said movable contact, a disc member located in said auxiliary space and connected with the movable contact, an air blast valve having a piston operated valve member in said auxiliary space, said valve member having a channel extending from said auxiliary space to the open air, a confined space formed by said valve member and said disc member when said members are in contact with each other, a membrane operated pilot valve in said channel for alternat- 2.

Landscapes

  • Fluid-Driven Valves (AREA)
  • Reciprocating Pumps (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
US512243A 1954-06-04 1955-05-31 Operating device for air blast circuit breakers Expired - Lifetime US2803724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE330631X 1954-06-04

Publications (1)

Publication Number Publication Date
US2803724A true US2803724A (en) 1957-08-20

Family

ID=20308079

Family Applications (1)

Application Number Title Priority Date Filing Date
US512243A Expired - Lifetime US2803724A (en) 1954-06-04 1955-05-31 Operating device for air blast circuit breakers

Country Status (5)

Country Link
US (1) US2803724A (de)
CH (1) CH330631A (de)
DE (1) DE1031396B (de)
FR (1) FR1137323A (de)
GB (1) GB770100A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831933A (en) * 1956-03-02 1958-04-22 Westinghouse Electric Corp Circuit interrupters
US2916577A (en) * 1957-05-06 1959-12-08 British Oxygen Co Ltd Fluid pressure responsive switch
US2949521A (en) * 1957-09-12 1960-08-16 Asea Ab High tension air blast circuit breaker
US3005077A (en) * 1958-03-26 1961-10-17 Asea Ab Operating device for a blast valve in an air blast circuit breaker
US3072767A (en) * 1958-12-03 1963-01-08 Voigt & Haeffner Ag Air blast circuit breakers
US3143623A (en) * 1960-11-02 1964-08-04 Asea Ab Operating means for a movable contact in the main breaking gap of an air blast circuit breaker

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB828589A (en) * 1957-05-23 1960-02-17 Asea Ab Air-blast electric circuit-breaker
DE1100761B (de) * 1958-02-21 1961-03-02 Continental Elektro Ind Ag Hochspannungsdruckluftschalter
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
DE1171973B (de) * 1960-11-02 1964-06-11 Asea Ab Druckgasschalter
US3065322A (en) * 1960-12-20 1962-11-20 Gen Electric Gas blast circuit breaker
GB1023151A (en) * 1961-03-17 1966-03-23 English Electric Co Ltd Improvements in or relating to gas-blast circuit-breakers
DE1260589B (de) * 1962-03-09 1968-02-08 Ass Elect Ind Schaltventil fuer Druckgasschalter
DE1216962B (de) * 1964-01-24 1966-05-18 Bbc Brown Boveri & Cie Einrichtung fuer Druckgasschalter
DE1291405B (de) * 1965-05-04 1969-03-27 Magrini Fab Riun Scarpa Druckgas-Leistungsschalter
FR2768855B1 (fr) * 1997-09-25 1999-11-12 Gec Alsthom T & D Sa Commande pour appareil electrique, par exemple disjoncteur haute tension

Citations (2)

* 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
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance

Family Cites Families (1)

* 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

Patent Citations (2)

* 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
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831933A (en) * 1956-03-02 1958-04-22 Westinghouse Electric Corp Circuit interrupters
US2916577A (en) * 1957-05-06 1959-12-08 British Oxygen Co Ltd Fluid pressure responsive switch
US2949521A (en) * 1957-09-12 1960-08-16 Asea Ab High tension air blast circuit breaker
US3005077A (en) * 1958-03-26 1961-10-17 Asea Ab Operating device for a blast valve in an air blast circuit breaker
US3072767A (en) * 1958-12-03 1963-01-08 Voigt & Haeffner Ag Air blast circuit breakers
US3143623A (en) * 1960-11-02 1964-08-04 Asea Ab Operating means for a movable contact in the main breaking gap of an air blast circuit breaker

Also Published As

Publication number Publication date
CH330631A (de) 1958-06-15
DE1031396B (de) 1958-06-04
GB770100A (en) 1957-03-13
FR1137323A (fr) 1957-05-27

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