US1899643A - Oil circuit breaker - Google Patents

Oil circuit breaker Download PDF

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Publication number
US1899643A
US1899643A US411271A US41127129A US1899643A US 1899643 A US1899643 A US 1899643A US 411271 A US411271 A US 411271A US 41127129 A US41127129 A US 41127129A US 1899643 A US1899643 A US 1899643A
Authority
US
United States
Prior art keywords
arc
gas
plates
liquid
path
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
US411271A
Other languages
English (en)
Inventor
Slepian Joseph
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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
Priority to NL32173D priority Critical patent/NL32173C/xx
Priority to BE375449D priority patent/BE375449A/xx
Priority to NL33551D priority patent/NL33551C/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US411271A priority patent/US1899643A/en
Priority to FR706634D priority patent/FR706634A/fr
Priority to FR39440D priority patent/FR39440E/fr
Priority to GB36437/30A priority patent/GB368805A/en
Application granted granted Critical
Publication of US1899643A publication Critical patent/US1899643A/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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H33/10—Metal parts
    • 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
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/75—Liquid-break switches, e.g. oil-break
    • 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
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor

Definitions

  • My'invention relates to circuit interrupters the bubble, formedabout the arc, to reducev and particularly to circuit interrupters of its Isize to a bubble of small diameter having the oil-immersed type. its surface of oil close to the arc core.
  • ne object of m invention is to provide It is a further object of my invention to an arc path, estab ished in the above-menprovide means about the arc path of the 50 tioned type of structure, with means for reabove-mentioned structure that shall retain taining a portion of the quenching fluid in a portion of the quenching liquid available intimate engagement therewith throughout about the arc core as the gas bubble about the length of the arc path. the core is expanded beyond the means.
  • 'A2 is a detailed v1ew, partly in section Huid at the boundary of the bubble, and and partly in elevation, of a circuit interthe continuing r evolution of gas at a hi h rupter showing a somewhat different em- 05 rate.
  • This gas passes turbulently into t e bodiment of the arc extinguishing device of arc space, and forms relatively cool centers .
  • a lig rod 9 extends throu h, nation, and causes the arc space to recover the cover 3, and is attached exteriorly of t e dielectric strength, more rapidly than would ⁇ casing 1, to an operating mechanism (not occur, if this blast of un-ionized gas from shown) and supports on its opposite ends, the bubble walls did not exist.
  • a conducting member 11 8 It is to Tbe expected then, that in. order to that bridges the stationar contact members increase the tendency of the gases to extiu- 7 and 8 when the lift r 9 is moved to its Uuish the arc, the rate of generation of gas uppermost position. by decomposition of the fluid should be in- Referring to-Fig.
  • Fig. 2 a somewhat different arrangement is illustrated for retaining the fluid in close proximity to the arc path.
  • the terminals 19 and 21 of the circuit interrupter are hollow and are directly connected to the gas filled chambers 22 and 23, respectively.
  • the lift rod 9, supports the bridging member 24. that is provided with spring pressed contact members 25 or engaging the terminals 19 and 21, respectively, to complete an electric circuit through the terminals 5 and 6.
  • the object, of so constructing and locating rthe chambers 22 and 23, is to provide receptacles for receiving the gases generated by the decomposition of the fluid in order to pre- 'vent the formation of large gas bubbles about the arc paths. This arrangement leaves the fluid' surface of the bubble in intimate relation with the arc core, and fresh gas will be continuously liberated through the decomposition of the fluid.
  • the development of the bubble takes place at. avery rapid rate and because of the inertia of the liquid surrounding thel chamber the pressure of the as therein will react on the gas in the cham er and will move thereinto rather than displace the liquid 2, which could not be accomplished instantaneously because of its inertia.
  • portions of the washers or plates 16, having holes 17 aligned with the arc path, are maintained adjacent tothe arc and supply liquid in its immediate vicinity, even though the bubble has been expanded beyond the plates.
  • the liquid retained by the plates 16 will be decomposed by the arc and fresh ases will be continually given oli and pass turbulently through the highly ionized current carrying portions of the bubble.
  • y invention is further novel, in that, the receptacle provided for drawing olf a portion of the generated until current zero, to reduce the size of the bubble about the arc, so that fresh gas may be. liberated and rapidly passed into the arc ath.
  • the contacts may even be ordinary il air 1n such case; and that solid substances,-
  • a plurality of plates having means for causing an arc o nings, said plates being of Fuller board or retaining said liquid by capillary attraction in contact with the arc and being spaced substantially uniformly along the whole length of the arc.
  • a body of liquid means for causing an arc in said liquid, means of Fuller board positioned along the length of the arc path for retaining said liquid and feeding it into the arc path as sa1d liquid is acted upon by the arc to supply gas to extinguish the arc, and vent-ing means pernitting lateral fiow of said gas from said y means of porous insulating material along the length thereof.
  • a con tancr ha v including a stack t gas to flow through the arc to extinguish it, and venting passages extending laterally from the arc path at points along substantially the whole length thereof, said venting passages being open at their outer ends permitting said .gas to flow laterally way from said stack of plates, and said cont iner having a cross-sectional area several times greater than the cross-sectional area of said stack of plates, whereby said container does not materially impede the lateral flow of gas fromu said stack.
  • a container having a body of liquid therein, separable means for drawing an arc in said liquid, an arc extinguishing structure including a stack of plates of porous insulating material positioned substantially uniformly along the path, at spaced intervals, said plates retaining said liquid and feeding it into the arc path as the liquid at the surfaces of said plates adjacent the arc path is decomposed to continuously supply gas to flow through the arc to extinguish it, said spaces between said plates forming venting passages extending laterally from the arcpathatpoints along substantially the whole length thereof, and said spaces being openlat the outer edges of said plates permitting said gas to ow laterally away from said stack of lates and preventing high gas pressures eing built up in said 'arc extinguishing structure, and said container having a cross-sectional area severaltimes greater than the crosssectionalarea of said stack of plates, wherey said container does not materially impede the lateral flow of gas from said stack.
  • a container having a body of liquid therein, separable means for drawing an arc in said liquid, an arc extinguishing structure including a stack of plates of porous insulating material positioned substantially uniformly along the length-of thev arc path, said plates retaining said liquid and feeding it into the arc path as the liquid at the surfaces of said plates adjacent the-arc path is decomposed to continuously supply gas to flow through the arc to extinguish it, said arc extinguishing structure having venting passages extending laterally from the arc path at points along substantially the whole length thereof, and said Ventilating passages being open at all times at the outer edges of said plates and there being a large space between the edges of said plates and said container permitting said gas to, flow laterally away from said stack of plates and preventing high gas pressures being built up in said ure.
  • an arc extinguishing structure including a plurality of plates of porous absorbent insulating material, aligned openings through said plates, means for drawing the arc with the portion arc extinguishing strucally from the openings thereof which is initially drawn in said openings, a container havinga body of liquid therein surrounding said are extinguishing structure, venting means extending laterthrough the plates in which the arc plays to an outer edge of the plates, and said container having a cross-sectional area several times greater than the area of said plates. 7.
  • an arc extinguishing structure including a plurality of plates of porous absorbent insulating material, aligned openings vthrough said plates, means for drawing thearc including a 'contact member movable through said openings, said Contact member having substantially the same width as said openings, a container having a body of liquid therein surrounding said arc extinguishing structure, venting means extending laterally from the openings through the plates in which the arc plays to an outer edge of the plates, and said container having a cross-sectional area several times greater than the area of said plates.
  • an arc extinguishing structure including means of insulating material having an opening therethrough in which the arc caused by the initial break of the circuit plays, said means of insulating material havabsorbent material along said opening for JOSEPH SLEPIAN.
  • an outer casing for the circuit interrupter enclosing said arc extinguishing structure said outer casing having a cross-section several times greater than the cross-section of said arc extinguishing structure, said means of insulating material including portions of absorbent material along said opening for the arc, said absorbent material having retained therein a liquid which gives oi a large volume of gas'when acted upon by the arc, and Ventilating means extending from said opening for the arc caused by the'initial break of the circuit to the space enclosed by said outer casing.
  • a clrcuit interrupter a pair of contacts one ofwhich is movable and between Whlch the circuit through said interrupter is initially broken, an arc extinguishing structure includingva stack of plates of insulating material, said stack having an opening therethrough in which the arc caused by the initial break of the circuit plays, said opening having portions of a wid@ not substantially greater than the width of said movable contact member, an outer casing for the c1r cuit interrupter enclosing said are extinguishing structure, said outer casing having a cross-section several times greater than the cross-section of said arc extinguishing strueture, some of said plates having portions of

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US411271A 1929-12-03 1929-12-03 Oil circuit breaker Expired - Lifetime US1899643A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL32173D NL32173C (en(2012)) 1929-12-03
BE375449D BE375449A (en(2012)) 1929-12-03
NL33551D NL33551C (en(2012)) 1929-12-03
US411271A US1899643A (en) 1929-12-03 1929-12-03 Oil circuit breaker
FR706634D FR706634A (fr) 1929-12-03 1930-11-27 Perfectionnements aux disjoncteurs
FR39440D FR39440E (fr) 1929-12-03 1930-11-29 Perfectionnements aux disjoncteurs
GB36437/30A GB368805A (en) 1929-12-03 1930-12-03 Improvements in or relating to electric circuit interrupters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US411271A US1899643A (en) 1929-12-03 1929-12-03 Oil circuit breaker

Publications (1)

Publication Number Publication Date
US1899643A true US1899643A (en) 1933-02-28

Family

ID=23628259

Family Applications (1)

Application Number Title Priority Date Filing Date
US411271A Expired - Lifetime US1899643A (en) 1929-12-03 1929-12-03 Oil circuit breaker

Country Status (3)

Country Link
US (1) US1899643A (en(2012))
GB (1) GB368805A (en(2012))
NL (1) NL32173C (en(2012))

Also Published As

Publication number Publication date
GB368805A (en) 1932-03-03
NL32173C (en(2012))

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