US2668217A - Liquid switch - Google Patents

Liquid switch Download PDF

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Publication number
US2668217A
US2668217A US266022A US26602252A US2668217A US 2668217 A US2668217 A US 2668217A US 266022 A US266022 A US 266022A US 26602252 A US26602252 A US 26602252A US 2668217 A US2668217 A US 2668217A
Authority
US
United States
Prior art keywords
switch
liquid
piston
quenching
countercontact
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
US266022A
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English (en)
Inventor
Vogelsanger Ernst
Ubezio Lorenzo
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.)
Rheinmetall Air Defence AG
Maschinenfabrik Oerlikon AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US2668217A publication Critical patent/US2668217A/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
    • H01H33/92—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 arc-extinguishing fluid being liquid, e.g. oil

Definitions

  • This invention relates to liquid switches, and more particularly to electric circuit breakers of the fluid blast type.
  • Liquid switches with points of interruption ar- 2 which is in communication at one end with the outlet of a liquid conduit 5, and at the other end with three are quenching passages 25.
  • the conduit 5 is U shaped, the inlet end thereof beranged in series and a pumping arrangement to 5 ing centered in the cylinder 9 and adapted to feed the insulating liquid to the quenching champroject into the open end of a hollow piston bers require considerable power for blasting the 8 which is integral with a switch contact rod liquid through the vaporized quenching medium 6 when the latter is moved axially to the right because of the increased pressure thereof when away from a countercontact i of the switch. the switch opens.
  • Fig. 1 is a fragmentary, longitudinal, vertical means for the moving masses.
  • Cylinder 9 is cross-sectional view of a liquid switch illustratthe guide of the movable contact rod 6 and at ing the invention; the same time the cylinder of the piston 8.
  • Fig.2 isa fragmentary, longitudinal, horizontal parts 5, 8 and 9 form the liquid pump.
  • the cross-sectional view of such switch; countercontact I is provided with a piston l0
  • Fig. 3 is a view in side elevation of a circuit on which presses a screw spring H.
  • the breaker composed of three liquid switch units countercontact l is displaced by the pressure of embodying the invention; the movable rod 5 in an axial direction.
  • Fig. 4 is a view in side elevation of a modificapiston in and spring ll provide a follow-up motion composed of six switch units; and tion of the contact 1 in circuit opening, and the Fig. 5 is another modification of three switch 30 energy of the moved masses is absorbed in cirunits arranged in a vertical pile. cuit closing.
  • the switch unit comprises a tubular insulator I conswitch, the arc quenching medium forced through taining an insulating tube 2.
  • the conduit 5 is blasted across the contact open- I and tube 2 are connected to a right-hand metal ing.
  • the fluid back-pressure arising in the housing or casing 3 which, in turn, is mounted chamber 4 when the circuit is opened renders onahollow support l6havingaliquid tight socket acceleration of the contact rod 6 impossible by H in communication with the interior of the retarding the movement of pump piston 8.
  • Such housing is provided with inthe same time the pump pistonflserves to dampen te nal b ack la n Which s mounted O the circuit opening of contact it, while the counend of an elongated cylinder 9.
  • the housing 3 tercontact I dampens the circuit closing thereof.
  • a liquid switch comprising the combination an a quenching Chamber device the other of an elongated switch contact member having end of which s Suppo t y the brackets l3, opposite portions consisting of a contact rod and I8.
  • the device 4 i p ev d With an eccentric a hollow piston, respectively; a device having an passage 24 for the arc quenching liquid (oil),
  • quenching chamber provided with a longitudinal passage for said rod and a series of cross passages for directing an arc quenching liquid blast; an elongated cylinder constituting a guide for-said hollow, piston; agu-shaped con- '4 by said countercontact piston; a liquid container for said parts provided With means supporting said cylinders and said arc quenching chamber device inv fixed relative-relationship in duit having one end :alined with said hollow 5 the container; anduan arc quenching rliquid in piston and projecting therein when the latter is moved inwardly of said cylinder; said are quenching chamber device having a quenching liquid inlet passage in communication withthe which such parts are immersed in said container.
  • a circuit breaker comprising a plurality of liquid switches, as defined by claim 1, means connecting said switches in series relation, and
  • such.parts. fo1"rning l means. for. operating, such switches in unison a liquid pump which, when theielengated switch-r contact member is actuated to open ther.switchgz forces an arc quenching liquid blast through 1:
  • lateralarms fixed to each movable contact member; means including parallel couplin sal nkedgwitn said arms, and a crank connected to a pair ofsaid couplings for retracting switch, a piston connected tdsaidcountercon "an-wadvancing'said movable contact members tact, a cylinder for said last-named@.:pi 10n;:fiends.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Circuit Breakers (AREA)
US266022A 1951-08-28 1952-01-11 Liquid switch Expired - Lifetime US2668217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2668217X 1951-08-28

Publications (1)

Publication Number Publication Date
US2668217A true US2668217A (en) 1954-02-02

Family

ID=4570947

Family Applications (1)

Application Number Title Priority Date Filing Date
US266022A Expired - Lifetime US2668217A (en) 1951-08-28 1952-01-11 Liquid switch

Country Status (4)

Country Link
US (1) US2668217A (de)
CH (1) CH293539A (de)
FR (1) FR1043833A (de)
NL (1) NL164669C (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798923A (en) * 1953-01-30 1957-07-09 Westinghouse Electric Corp Circuit interrupter
US2813177A (en) * 1954-03-29 1957-11-12 Kelman Electric And Mfg Compan Circuit breaker
US2850600A (en) * 1956-11-20 1958-09-02 David C Prince High voltage circuit breaker
US2901570A (en) * 1956-04-04 1959-08-25 Gratzmuller Jean Louis Hydraulically actuated electric circuit-breakers
US2909633A (en) * 1957-02-11 1959-10-20 Donald M Umphrey High tension oil switch
US2919330A (en) * 1956-01-30 1959-12-29 Oerlikon Engineering Company Low-oil content high-tension oil circuit breaker
US2979591A (en) * 1958-09-19 1961-04-11 Westinghouse Electric Corp Circuit interrupters
US3057983A (en) * 1959-01-23 1962-10-09 Westinghouse Electric Corp Circuit interrupter
US3384724A (en) * 1964-04-02 1968-05-21 Erwin Marx Circuit breaker with liquid arc quenching

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1293885B (de) * 1960-04-14 1969-04-30 Mc Graw Edison Co Fluessigkeitsarmer elektrischer Leitungsschalter
NL120453C (de) * 1960-06-14
DE1298600B (de) * 1962-01-17 1969-07-03 Sachsenwerk Licht & Kraft Ag Fluessigkeitsarmer elektrischer Leistungsschalter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1740558A (en) * 1923-04-02 1929-12-24 ainsworth
US1740531A (en) * 1923-01-08 1929-12-24 Westinghouse Electric & Mfg Co Circuit-breaker system
US1814847A (en) * 1929-09-20 1931-07-14 Gen Electric Circuit interrupting device
US2158846A (en) * 1936-02-27 1939-05-16 Gen Electric Electric circuit breaker
US2219171A (en) * 1938-07-25 1940-10-22 Gen Electric Electric circuit breaker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1740531A (en) * 1923-01-08 1929-12-24 Westinghouse Electric & Mfg Co Circuit-breaker system
US1740558A (en) * 1923-04-02 1929-12-24 ainsworth
US1814847A (en) * 1929-09-20 1931-07-14 Gen Electric Circuit interrupting device
US2158846A (en) * 1936-02-27 1939-05-16 Gen Electric Electric circuit breaker
US2219171A (en) * 1938-07-25 1940-10-22 Gen Electric Electric circuit breaker

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798923A (en) * 1953-01-30 1957-07-09 Westinghouse Electric Corp Circuit interrupter
US2813177A (en) * 1954-03-29 1957-11-12 Kelman Electric And Mfg Compan Circuit breaker
US2919330A (en) * 1956-01-30 1959-12-29 Oerlikon Engineering Company Low-oil content high-tension oil circuit breaker
US2901570A (en) * 1956-04-04 1959-08-25 Gratzmuller Jean Louis Hydraulically actuated electric circuit-breakers
US2850600A (en) * 1956-11-20 1958-09-02 David C Prince High voltage circuit breaker
US2909633A (en) * 1957-02-11 1959-10-20 Donald M Umphrey High tension oil switch
US2979591A (en) * 1958-09-19 1961-04-11 Westinghouse Electric Corp Circuit interrupters
US3057983A (en) * 1959-01-23 1962-10-09 Westinghouse Electric Corp Circuit interrupter
US3384724A (en) * 1964-04-02 1968-05-21 Erwin Marx Circuit breaker with liquid arc quenching

Also Published As

Publication number Publication date
CH293539A (de) 1953-09-30
FR1043833A (fr) 1953-11-12
NL164669C (nl)

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