US2805305A - High voltage switch - Google Patents

High voltage switch Download PDF

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Publication number
US2805305A
US2805305A US419013A US41901354A US2805305A US 2805305 A US2805305 A US 2805305A US 419013 A US419013 A US 419013A US 41901354 A US41901354 A US 41901354A US 2805305 A US2805305 A US 2805305A
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US
United States
Prior art keywords
contact
switch arm
arc
open end
gas
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
US419013A
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English (en)
Inventor
Leopold Otto
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Application granted granted Critical
Publication of US2805305A publication Critical patent/US2805305A/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

Definitions

  • a switch arm arrangement including a contact means and a switch arm means having a contact end portion and movable from an engaging position in which said contact end portion engages the contact means to a retracted position in which the contact end portion is spaced from the contact means. During this movement an arc is formed.
  • a pressurized gas conduit means formed with an open end adjacent the contact means and the switch arm means, the conduit means having relatively close to its open end a portion of substantially restricted cross-sectional configuration. Because of this restricted portion, the gas in the conduit beyond the restricted portion builds up in pressure.
  • the contact means is formed as a flaring aperture in a conductive plate and the contact end of the switch arm means engages this aring portion. Beyond the aperture and spaced therefrom is located an arcing electrode so that upon opening the switch, the arc formed between the contact end of the switch arm and the contact means is blown through the aperture until it terminates at the arcing electrode and is finally extinguished.
  • Fig. l is a cross-sectional View of an arc extinguishing chamber of a high voltage switch in accordance with the invention
  • Y Fig. 2 is a view along line A-A of Fig. l;
  • Fig. 3 is a side view of the arrangement shown in Fig. l;
  • Fig. 4 is a top view of the arrangement shown in Fig. l.
  • Figs. 1 4 there is shown an are extinguishing chamber housing 1 formed of an insulating Patented Sept. 3, 1957 material.
  • a guide cylinder 2 formed of a conductive material coaxial about a movable switch arm 3.
  • a current supply terminal (not shown) is connected to the guide cylinder 2 and the current is fed from the guide cylinder 2 to the switch arm 3 through contact means 4 which is in slidable engagement with said switch arm.
  • the switch arm is movable from a position in which it engages the contact means 5 to a position (shown) retracted from the contact means. This movement may he accomplished by directing a jet of pressurized gas against a portion (not shown) of the switch arm means or by mechanical means well known in the art.
  • the switch is closed, the current is carried from the switch arm 3 to the contact means 5, through the spacer pins S and the top plate 7 to the terminal 6.
  • the pressurized gas for extinguishing the arc formed upon opening the switch is carried by pressurized gas conduit 10 which is concentrically arranged about the guide cylinder 2.
  • the pressurized gas moves in the direction indicated by the arrows.
  • the guide cylinder 9 is made of increased size in order substantially to restrict the cross-sectional configuration of the conduit 10.
  • the size of the restricted portion of the pressurized gas conduit is made about one-half that of the remainder of the conduit.
  • the restricted portion of the conduit causes gas pressure to build up in section 18 of the conduit so that this section can be though of as a high pressure gas chamber.
  • the contact means 5' is formed with a conically haring portion 12 which the oblique portion 13 of the switch arm engages when the switch is closed. Upon opening the switch the arc which forms is blown until it extends between portions 14 and 15 of the contact means and switch arm means, respectively, and the end terminating at portion 14 is then blown to the arcing electrode 16. ln order to lengthen the life of the switch parts 14, 15 and 16, they are made of a highly resistant metal such as tungsten or titanium.
  • the portion 17 of the switch chamber wall 1 which is close to the arcing area is formed of a heat resistant material.
  • the noxious gases formed during the opening of the switch and the subsequent extinguishing of the arc are carried through the hollow center of the switch arm to an outlet means (not shown) and also through the aperture in the contact means 5 and out of the mufer openings 11 located in the wall joining member 5 and plate 7.
  • AA high voltage switch arrangement comprising, in combination, Contact means; switch arm means including a contact end portion, said switch arm means being movable from an engaging position in which said contact end portion thereof engages said Contact means to a retracted position in which said contact end portion thereof is spaced from said contact means, whereby a high voltage arc is formed upon movement of said switch arm means from said engaging position to said retracted position; and pressurized gas conduit means formed with an open end adjacent said contact means and said contact end of said switch arm means and having relatively close to said open end a fixed portion of substantially constricted crosssectional configuration to define, in said conduit means, a downstream portion between said constricted portion and said open end thereof and an upstream portion on the other side of said constricted portion, said downstream portion gradually diverging from said constricted portion to said open end of said conduit means so that when an arc is formed during movement of said switch arm means from said engaging position to said retracted position it at least partially blocks said open end of said conduit means, and the pressure of the gas within the downstream portion
  • a high voltage switch arrangement comprising, in combination, contact means; switch arm means including a contact end portion, said switch arm means being movable from an engaging position in which said contact end portion thereof engages said contact means to a retracted position in which said contact end portion thereof is spaced from said contact means, whereby a high voltage arc is formed upon movement of said switch arm means from said engaging position to said retracted position; and pressurized gas conduit means coaxial with said switch arm means and formed with an open end adjacent said Contact means and said contact end of said switch arm means and having relatively close to said open end a iixed portion of substantially constricted cross-sectional configuration to define, in said conduit means, a downstream portion between said constricted portion and said open end thereof and an upstream portion on the other side of said constricted portion, the pressure of the gas owing through said conduit means being substantially larger in said upstream portion thereof than in said downstream portion, and said downstreamy portion gradually diverging from said constricted portion to said openiend of said conduit means thankhat, when ⁇ an arc is
  • a high voltage switch arrangement comprising, in combination, contact means; switch arm means including a Contact end portion, said switch arm means being movable from an engaging position in which said contact end portion thereof engages said contact means to a retracted position in which said Contact end portion thereof is spaced from said contact means, whereby a high voltage arc is formed upon movement of said switch arm means from said engaging position to said retracted position; arcing electrode means aligned with said contact means and said contact end portion and spaced further from said switch arm means than from said contact means and pressurized gas conduit means formed with an open end adjacent said contact means and said contact end of said switch arm means and having relatively close to said open end a constricted portion having a cross-sectional configuration of approximately one-half the size of the cross-sectional configuration of the remainder of said conduit means, said conduit means gradually diverging from said constricted portion thereof to said open end thereof so that when an arc is formed during movement of said switch arm means from said engaging position to said retracted position it at least partially blocks said open end of said conduit means,
  • a high voltage switch arrangement comprising, in combination, contact means comprising a metal plate formed with an aperture -therein opening in opposite faces of said plate and flaring outwardly toward one of said faces of said plate; switch arm means including a contact end portion adapted to engage the flaring portion of said contact means, said switch arm means being movable from an engaging position in which said contact end portion thereof engages said contact means to a retracted position in which said contact end portion thereof is spaced from said contact means, whereby a high voltage arc is formed upon movement of said switch arm means from said engaging position to said retracted position; arcing electrode means aligned with said aperture in said metal plate and spaced further from said switch arm means than said metal plate; and pressurized gas conduit means concentrically arranged about said switch arm means and formed with an open end adjacent said contact means and said contact end of said switch arm means, and having relatively close to said open end a fixed portion of substantially restricted cross-sectional configuration so that when an arc is formed during the movement of said switch arm means from said engaging position to said plate
  • a high voltage switch arrangement comprising, in combination, contact means comprising a metal plate formed with an aperture therein opening in opposite faces of said plate and Haring outwardly toward one of said faces of said plate; switch arm means including a contact end portion adapted to engage the flaring portion of said contact means, said switch arm means being movable from an engaging position in which said contact end portion thereof engages said Contact means to a retracted position in which said contact end portion thereof is spaced from said contact means, whereby a high voltage arc is formed upon movement of said switch arm means from said engaging position to said retracted position; arcing electrode means aligned with said aperture in said metal plate and spaced further from said switch arm means than said metal plate; and pressurized gas conduit means concentrically arranged about said switch arm means and formed with an open end adjacent said contact means and said contact end of said switch arm means, and having relatively close to said open end a portion having a crosssectional configuration of approximately one-half the size of the cross-sectional configuration of the remainder of said conduit means so that when an arc
  • a high voltage switch arrangement comprising, in combination, a housing having an ⁇ arc extinguishing charnber; at least two cooperating contacts mounted in said chamber, at least one of said contacts being movable from an engaging position to a retracted position in which said contacts are spaced from each other, whereby a high voltage arc is formed upon movement of said contacts; and pressurized gas conduit means surrounding at least one of said contacts and being formed with an open end adjacent the space between said contacts in said retracted position thereof, said conduit means having relatively close to said open end thereof a fixed portion of substantially constricted cross-sectional configuration of such size that when gas is flowing ⁇ through said conduit means, the gas pressure produced on one side of said constricted portion thereof is substantially larger than the gas pressure produced on the other side of said constricted portion, said conduit means gradually diverging from said fixed portion thereof to said open end thereof.

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  • Circuit Breakers (AREA)
US419013A 1953-03-31 1954-03-26 High voltage switch Expired - Lifetime US2805305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL15098A DE1011035B (de) 1953-03-31 1953-03-31 Elektrischer Hochleistungsschalter

Publications (1)

Publication Number Publication Date
US2805305A true US2805305A (en) 1957-09-03

Family

ID=7260022

Family Applications (1)

Application Number Title Priority Date Filing Date
US419013A Expired - Lifetime US2805305A (en) 1953-03-31 1954-03-26 High voltage switch

Country Status (4)

Country Link
US (1) US2805305A (de)
CH (1) CH319012A (de)
DE (1) DE1011035B (de)
FR (1) FR1094269A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911507A (en) * 1957-06-21 1959-11-03 Ite Circuit Breaker Ltd Recirculating gas blast interrupter
US2978559A (en) * 1957-12-16 1961-04-04 Ite Circuit Breaker Ltd Bushing mounted interrupter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH410110A (de) * 1964-07-24 1966-03-31 Bbc Brown Boveri & Cie Druckgasschalter mit mindestens einer innerhalb eines Hohlisolators befindlichen Schaltstelle
US3290469A (en) * 1964-09-30 1966-12-06 Westinghouse Electric Corp Compressed-gas circuit interrupter having cavitation means
FR2050727A5 (de) * 1969-06-23 1971-04-02 Latour Andre

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB355133A (de) * 1929-11-15 1931-08-20 International General Electric Company
DE660394C (de) * 1934-07-08 1938-05-21 Frida Strauss Geb Ruppel Schalter mit Lichtbogenloeschung durch Druckgas mit einem Hilfsgefaess
US2290004A (en) * 1936-07-30 1942-07-14 Bbc Brown Boveri & Cie Electric circuit breaker
US2447674A (en) * 1945-01-13 1948-08-24 Westinghouse Electric Corp Circuit interrupter
US2452221A (en) * 1945-08-27 1948-10-26 Pacific Electric Mfg Corp Fluid blast arc extinguishing circuit breaker
US2517136A (en) * 1949-09-13 1950-08-01 Gen Electric Contact structure for electric circuit breakers
US2643315A (en) * 1949-08-18 1953-06-23 Asea Ab Arrangement in electric air blast circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE420059A (fr) * 1937-02-17 1937-03-31 Acec Interrupteur à gaz comprimé
DE724773C (de) * 1940-11-22 1942-09-05 Aeg Elektrischer Stromunterbrecher mit Lichtbogenloeschung durch ein stroemendes Druckmittel
DE735702C (de) * 1941-04-29 1943-05-24 Aeg Elektrischer Stromunterbrecher mit Lichtbogenloeschung durch einen Loeschgasstrom

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB355133A (de) * 1929-11-15 1931-08-20 International General Electric Company
DE660394C (de) * 1934-07-08 1938-05-21 Frida Strauss Geb Ruppel Schalter mit Lichtbogenloeschung durch Druckgas mit einem Hilfsgefaess
US2290004A (en) * 1936-07-30 1942-07-14 Bbc Brown Boveri & Cie Electric circuit breaker
US2447674A (en) * 1945-01-13 1948-08-24 Westinghouse Electric Corp Circuit interrupter
US2452221A (en) * 1945-08-27 1948-10-26 Pacific Electric Mfg Corp Fluid blast arc extinguishing circuit breaker
US2643315A (en) * 1949-08-18 1953-06-23 Asea Ab Arrangement in electric air blast circuit breaker
US2517136A (en) * 1949-09-13 1950-08-01 Gen Electric Contact structure for electric circuit breakers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911507A (en) * 1957-06-21 1959-11-03 Ite Circuit Breaker Ltd Recirculating gas blast interrupter
US2978559A (en) * 1957-12-16 1961-04-04 Ite Circuit Breaker Ltd Bushing mounted interrupter

Also Published As

Publication number Publication date
DE1011035B (de) 1957-06-27
CH319012A (de) 1957-01-31
FR1094269A (fr) 1955-05-16

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