US2429311A - Circuit breaker with blowing device - Google Patents

Circuit breaker with blowing device Download PDF

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Publication number
US2429311A
US2429311A US496285A US49628543A US2429311A US 2429311 A US2429311 A US 2429311A US 496285 A US496285 A US 496285A US 49628543 A US49628543 A US 49628543A US 2429311 A US2429311 A US 2429311A
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US
United States
Prior art keywords
cylinder
contact
circuit breaker
plunger
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
US496285A
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English (en)
Inventor
Gay Maurice Jean
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US2429311A publication Critical patent/US2429311A/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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/905—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the compression volume being formed by a movable cylinder and a semi-mobile piston
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc

Definitions

  • This invention relates to circuit breakers and more particularly to breakers having auxiliary means for extinguishing the arc formed on separation of the contacts.
  • I provide a means for limiting the pressure under which the extinguishing fluid is injected into the arc which means is independent rof :the movement of the contacts.r
  • the extinguishing ilud is preferably delivered from the compression chamber the volurne of which is expansible under excessive internal pressure so Aas to insure the delivery of the iluid under constant pressure.
  • Figs. 1 and 2 are vertical sectional views partly in elevation showing the movable contact assembly adapted for immersion in an arc extinguishing liquid such as oil, with themovable contact inthe respective gures shown in extended and retracted positions, and
  • Fig, 3 is a side elevation, partly insection, of a switch embodying a contact assembly similar to that shown in Figs. 1 and 2 but adapted for pneumatic operation.
  • the pump shown in the drawing is formed by a movable piston 2
  • the piston can slide in the xed connection 30 which supports the upper end of its rod 28 in the circuit closing position of the circuit-breaker..
  • connection 30 is supported by a casing 40 adapted to contain oil in which the movable contact operates.
  • a compensating spring 29 is inserted between connection 30 and piston 22 and tends to keep the latter in its position of rest, that is to say: in lower position.
  • This piston cooperates with cylinder 2
  • ) of the cylinder is perforated, having several openings 25 through which a blowing-out nozzle 26 united with this bottom of cylinder is fed by a liquid set under pressure in the cylinder.
  • the spring ⁇ 29 has acted once more as amotion-damper. Also, it must be pointed out that the oil quantity set under pressure by this pump may be very important as theV entire pump is quite independent of the movable contact entering the non represented extinguishing pot. Also, as the movable electrode-rod is solid it has greater rigidity than a tube and may be made of a light metal, instead of copper thus facilitating movement of the parts.
  • the pressure limiter conformable to the invention may be advantageously applied to circuitbreakers with blowing-by compressed gas in which the latter is supplied by a pump put in motion during the motion of the movable Contact.
  • Fig. 3 shows this type of apparatus with pressure limiter applied to an auxiliary pump.
  • the circuit breaker assembly shown in Fig. 3 is carried by an insulating base 45 having two contact carrying columns or posts 4S and 4l.
  • Post 4'! carries the stationary contact assembly comprising a xed 'insulating tube 32 open at one end and adapted to receive the movable contact head 25;.
  • Tube 32 is closed at the other end by the Contact 3
  • vContact hea-'d 24 is mounted at the end of a contact rod 23 which extends through a bearing 49 on the post 46 and is attached by a pin and slot connection to an operating arm 3 3 pivoted on the'base 4d.
  • Spring fingers 5l in thebearing ⁇ 49 press against the rod 23 and serve to make electrical contact therewith.
  • a piston 22 which is slidable in an upright extension 53 of the post 45, a spring 29 being interposed between the extension 53 and the piston head.
  • Surrounding the piston 22 and spring 29 is a cylinder 2
  • An electric circuit breaker comprising a frame, a set of cooperating contact members, one of said members being stationary and the other one being slideably mounted in said frame for variation of their relative positions and constructed and arranged to engage said stationary contact member in the closed position of the circuit breaker, a pumping means adapted to blow an arc-extinguishing fluid into the arcing space between said contact members during the separating movement of the same, said pumping means including a movable pump cylinder and a plunger formed with an orifice throughout its whole length, said plunger being adapted to reciprocate with respect to and within said pump cylinder, said slideable contact member constituting a rod extending through said pump cylinder and said plunger and slideable in said plunger orifice, a loading means adapted to exert pressure in such direction and of such value on said plunger that said plunger is shifted to increase the volume of the active space within said cylinder
  • An electric circuit breaker comprising a frame, a set of cooperating contact members, at
  • said members being slideably mounted in said frame for variation of their relative positions and constructed and arranged to engage the other contact member in the closed position of the circuit breaker, a pumping means adapted to blow an arc-extinguishing uid into the arcing space between said contact members during the separating movement of the same, said pumping means including a movable pump cylinder and a plunger formed with an orifice throughout vits whole length, said plunger being adapted to reciprocate with respect to and within said pump cylinder, said slideable contact member constituting a rod extending through said pump cylinder and said plunger and slideable in said plunger 1969, a loading means adapted to exert pressure in such direction and of such Value on said plunger that said plunger is shifted to increase the volume of the active space within said cylinder, when a predetermined pressure of the arc-extinguishing fluid is exceeded, whereby said plunger acts as a pressure relieving and equalizing means, that part of said slideable contact rod which extends beyond said cylinder and

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  • Circuit Breakers (AREA)
US496285A 1942-07-30 1943-07-27 Circuit breaker with blowing device Expired - Lifetime US2429311A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR880156T 1942-07-30
FR890516T 1942-07-30

Publications (1)

Publication Number Publication Date
US2429311A true US2429311A (en) 1947-10-21

Family

ID=26226492

Family Applications (1)

Application Number Title Priority Date Filing Date
US496285A Expired - Lifetime US2429311A (en) 1942-07-30 1943-07-27 Circuit breaker with blowing device

Country Status (4)

Country Link
US (1) US2429311A (it)
BE (1) BE447706A (it)
CH (1) CH230968A (it)
FR (2) FR880156A (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551772A (en) * 1946-05-21 1951-05-08 Forges Ateliers Const Electr High-tension interrupting device
US2922010A (en) * 1956-12-20 1960-01-19 Westinghouse Electric Corp Circuit interrupters
US2981814A (en) * 1957-01-22 1961-04-25 Westinghouse Electric Corp Circuit interrupters
US3077526A (en) * 1953-09-23 1963-02-12 Westinghouse Electric Corp Circuit interrupting device
US3201554A (en) * 1958-02-26 1965-08-17 Fed Pacific Electric Co Circuit breakers with rocking prebiased contacts
US9493302B2 (en) 2007-11-16 2016-11-15 Edgewell Personal Care Brands, Llc Waste disposal services and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558299B1 (fr) * 1984-01-13 1987-03-20 Alsthom Atlantique Disjoncteur a haute tension a soufflage d'arc

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2051659A (en) * 1934-09-06 1936-08-18 Gen Electric Electric circuit breaker
DE636024C (de) * 1934-02-02 1936-10-01 Const Electr De Delle Sa Atel Elektrischer Schubtrennschalter
US2084936A (en) * 1934-02-20 1937-06-22 Delle Atel Const Electr Electric circuit breaker
US2095441A (en) * 1934-04-25 1937-10-12 Charles S Hegel Circuit breaker
US2265232A (en) * 1938-05-07 1941-12-09 Ex Cell O Corp Pump structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE636024C (de) * 1934-02-02 1936-10-01 Const Electr De Delle Sa Atel Elektrischer Schubtrennschalter
US2084936A (en) * 1934-02-20 1937-06-22 Delle Atel Const Electr Electric circuit breaker
US2095441A (en) * 1934-04-25 1937-10-12 Charles S Hegel Circuit breaker
US2051659A (en) * 1934-09-06 1936-08-18 Gen Electric Electric circuit breaker
US2265232A (en) * 1938-05-07 1941-12-09 Ex Cell O Corp Pump structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551772A (en) * 1946-05-21 1951-05-08 Forges Ateliers Const Electr High-tension interrupting device
US3077526A (en) * 1953-09-23 1963-02-12 Westinghouse Electric Corp Circuit interrupting device
US2922010A (en) * 1956-12-20 1960-01-19 Westinghouse Electric Corp Circuit interrupters
US2981814A (en) * 1957-01-22 1961-04-25 Westinghouse Electric Corp Circuit interrupters
US3201554A (en) * 1958-02-26 1965-08-17 Fed Pacific Electric Co Circuit breakers with rocking prebiased contacts
US9493302B2 (en) 2007-11-16 2016-11-15 Edgewell Personal Care Brands, Llc Waste disposal services and methods

Also Published As

Publication number Publication date
FR880156A (fr) 1943-03-16
BE447706A (it)
CH230968A (fr) 1944-02-15
FR890516A (fr) 1944-02-10

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