US2592079A - Compressed gas operated circuit breaker - Google Patents

Compressed gas operated circuit breaker Download PDF

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Publication number
US2592079A
US2592079A US106686A US10668649A US2592079A US 2592079 A US2592079 A US 2592079A US 106686 A US106686 A US 106686A US 10668649 A US10668649 A US 10668649A US 2592079 A US2592079 A US 2592079A
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US
United States
Prior art keywords
chamber
contact
contacts
gas
piston
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
US106686A
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English (en)
Inventor
Thommen Hans
Amstutz Arnold
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Application granted granted Critical
Publication of US2592079A publication Critical patent/US2592079A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve

Definitions

  • the present invention relatesto circuit breakers of the gas blast type in which the breaker contacts, normally spring loaded into engaging relation in a switch chamber, are separated upon an application of pressure gas to the contacts, and remain open so long as the gas pressure is maintained in the chamber. Closure of the contacts is. effected “by releasing "the gas pressure in the chamber thuspermitting the counter forced the contact loading device to move the contacts to closed position.
  • valvefbody “Ii” includes two valve plates I3, I 4 cooperative with opposite ends of the valve cylinder I5 and interconnected by rod I6 for operation simultaneously in such 'man- 2 nor that when valve plate I3 is seated upon the cylinder end I5a, valve plate I4 is removed from its seat on the cylinder end I5b and vice versa.
  • the cylinder I5 contains an opening I50 leading therefrom into the lower end of the insulator column Ill and a vent l'5d from cylinder end I5a to atmosphere.
  • vent I5d is cut off by closure of valve cylinder end i511 and compressed air is admitted "from tank 'l'2into the column 40.
  • annular plate i I of conductive material is in serted.
  • This plate includes a terminal 18 to which one side L of the line is connected, and a spider 19 at the center or hub portion of which is supported a stationary cylindrical contact 20. Cooperative with this contact is a movable tubular contact 2
  • seats upon the end of contact 20, the upper end is secured to a valve plate 22 having a peripheral flange 22aand ports 23 are provided in the tubular wall to .permit discharge of the gases formed upon separation of the contacts.
  • Plate 25 Upstanding upon the insulator column I0 and of about the same internal diameter is another tubular column 24 of conductive material that carries a transversely arranged conductive plate '25 inserted between the ends thereof.
  • Plate 25 includes one or more longitudinal gas passageways 26 therethrough, one or more gas ports 21 leading from the lower face of the plate to atmosphere, and an axial opening 28 that serves as a sleeve for guiding a conductive piston rod 29.
  • the lower end of rod 29 is secured to valve plate 22 and a compression spring 30 carried between the lower face of plate 25 and valve plate 22 is preferably included to urge the interconnected components, i. e. piston rod' 29, valve plate 22 and tubular contact 2I downwardly so that contacts '20, 2
  • a piston 32 also of conductive material carried at the top of rod 29 works in a conductive cylinder "33 that is enclosed by a housing 34 also of conductive material.
  • the upper end wall of cylinder 33 is provided with a very large opening 35 and a port 36 is provided in the side wall of the cylinder in order to'permit compressed gas to flow from the switch chamber 31 into a pressure storage, auxiliary chamber 38 after the piston 32 has moved to the position shown in broken lines.
  • a second terminal 39 Upstanding upon housing 34 is a second terminal 39 to which line L1, is connected and since the components associated with the tubular contact 2
  • the object of the present invention is to provide a more rapid and positive reclosing action of the switch contacts.
  • the construction described assures the desired result and operates in the following manner:
  • valve control rod I6 is shifted by suitable control means (not illustrated) to the right from the position shown in the drawing thus closing end
  • Compressed air now flows from tank I2 through valve into the main switch chamber 31 causing contact 2
  • the are formed upon separation of the contacts is bathed on all sides by the compressed gas flowing upward around and through the movable contact 2
  • Valve plate 22 and piston 32 rise simultaneously with the movable contact 2
  • the latter now fills with pressure gas from the main switch chamber flowing upwardly through the passageway 26 and the contacts 20, 2
  • valve control rod I6 When it is desired to close the switch contacts, valve control rod I6 is shifted back to the position shown in full lines thus cutting off the interior of the insulator and conductive columns H], 24 from the compressed air tank l2 and simultaneously venting the columns to atmosphere through opening I511.
  • the air under pressure in columns is now discharged rapidly through opening l5d.
  • the air under pressure in the columns is now discharged rapidly through opening
  • are propelled downwardly withgreat force thus effecting a rapid and positive reclosure of contacts 20, 2
  • Spring 30 also exerts a reclosing force on the movable contact 2
  • a compressed gas circuit breaker comprising, a switch contact chamber, a pair of normally closed switch contacts in said chamber, said contacts being separated by compressed gas upon admission thereof to said chamber and maintained in said separated state by the gas pressure in said chamber, a source of compressed gas, valve means for establishing communication between said chamber and gas source, valve means controlling relief of the gas pressure from said chamber, a pressure storage auxiliary chamber communicable only with said switch contact chamber, a piston cooperative with a movable one of said contacts for efiectingreclosure thereof, opposite sides of said piston being continuously exposed respectively to the gas pressures in said switch contact and auxiliary chambers, andmeans for charging'said auxiliary chamber with compressed gas from said switch contact chamber whereby to effect movement of said piston in the contact reclosing direction .
  • a piston cooperative with a movable one of said contacts for effecting reclosure thereof, opposite sides of said piston being continuously exposed respectively to the gas pressures in said ,switch'contact and auxiliary chambers, and valve means interconnecting
  • a compressed gas circuit breaker comprising, ;a,. switch contact chamber, a pair of normallylclosed switch contacts in said chamber, said contacts beingseparated by compressed gas upon admission thereof to said chamber and maintained in said separated state by the gas pressure in said chamber, a source of compressed gas, valve meansfor establishing communication between said chamber and gas source, valve means controlling relief of gas pressure from said chamber, a pressure storage auxiliary chamber,
  • a piston cooperable with one of said contacts for moving the same in the direction of the other contact to effect reclosure of said contacts, opposite sides of said piston being continuously exposed respectively to the gas pressures in said switch contact and auxiliary chambers, and a passageway between said chambers controlled by said piston for charging said auxiliary chamber with compressed gas from said switch contact chamber whereby to eiiect movement of said piston in the contact reclosing direction by the gas pressure in said auxiliary chamber forthwith upon relief of the gas pressure from said switch contact chamber.
  • a compressed. gas circuit breaker as defined in claim 3 wherein said auxiliary chamber includes an open cylinder within which said piston slides, and the said passageway between said chambers is constituted by an opening through the cylinder wall.
  • a compressed. gas circuit breaker comprising, a switch contact chamber, a pair of normally closed switch contacts in said chamber, said contacts being separated by compressed upon admission thereof to said chamber and maintained in said separated state by the gas pressure in said chamber, a source of compressed as, valve means for establishing communication between said chamber and gas source, valve means controlling relief of gas pressure from aid chamber, a pressure storage auxiliary chamber, a piston secured.

Landscapes

  • Circuit Breakers (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Safety Valves (AREA)
US106686A 1948-07-31 1949-07-25 Compressed gas operated circuit breaker Expired - Lifetime US2592079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH670661X 1948-07-31

Publications (1)

Publication Number Publication Date
US2592079A true US2592079A (en) 1952-04-08

Family

ID=4527638

Family Applications (1)

Application Number Title Priority Date Filing Date
US106686A Expired - Lifetime US2592079A (en) 1948-07-31 1949-07-25 Compressed gas operated circuit breaker

Country Status (7)

Country Link
US (1) US2592079A (pl)
BE (2) BE492735A (pl)
CH (2) CH267792A (pl)
DE (2) DE806693C (pl)
FR (2) FR990536A (pl)
GB (1) GB670661A (pl)
NL (2) NL86380C (pl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708700A (en) * 1953-01-24 1955-05-17 Bbc Brown Boveri & Cie Presssure gas operated electrical circuit breaker device
US2748226A (en) * 1953-02-26 1956-05-29 Westinghouse Electric Corp Compressed-gas circuit interrupter
US2919329A (en) * 1956-07-10 1959-12-29 Merlin Gerin Air blast circuit breakers
US3087035A (en) * 1959-03-20 1963-04-23 Asea Ab Fluid operated circuit breaker
US3134875A (en) * 1960-02-27 1964-05-26 Asea Ab Rebound preventing means in air blast circuit breaker

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB884854A (en) * 1957-07-01 1961-12-20 Ass Elect Ind Improvements in air or gas blast electric circuit-breakers
DE1207992B (de) * 1958-08-01 1965-12-30 Bbc Brown Boveri & Cie Druckluftschalter mit Einfach- oder Mehrfachunterbrechung pro Pol

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522514A (en) * 1937-09-10 1940-06-20 Bbc Brown Boveri & Cie Improvements in and relating to electric switchgear
US2380817A (en) * 1943-04-23 1945-07-31 Gen Electric Electric circuit breaker
US2891826A (en) * 1955-01-31 1959-06-23 Clevite Corp Self-aligning bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522514A (en) * 1937-09-10 1940-06-20 Bbc Brown Boveri & Cie Improvements in and relating to electric switchgear
US2380817A (en) * 1943-04-23 1945-07-31 Gen Electric Electric circuit breaker
US2891826A (en) * 1955-01-31 1959-06-23 Clevite Corp Self-aligning bearing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708700A (en) * 1953-01-24 1955-05-17 Bbc Brown Boveri & Cie Presssure gas operated electrical circuit breaker device
US2748226A (en) * 1953-02-26 1956-05-29 Westinghouse Electric Corp Compressed-gas circuit interrupter
US2919329A (en) * 1956-07-10 1959-12-29 Merlin Gerin Air blast circuit breakers
US3087035A (en) * 1959-03-20 1963-04-23 Asea Ab Fluid operated circuit breaker
US3134875A (en) * 1960-02-27 1964-05-26 Asea Ab Rebound preventing means in air blast circuit breaker

Also Published As

Publication number Publication date
NL147135B (nl)
BE492735A (pl)
DE817170C (de) 1951-10-15
CH274725A (de) 1951-04-15
GB670661A (en) 1952-04-23
CH267792A (de) 1950-04-15
FR59799E (fr) 1954-07-19
NL86380C (pl)
BE490328A (pl)
DE806693C (de) 1951-06-18
FR990536A (fr) 1951-09-24

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