US1849875A - Oil circuit breaker - Google Patents

Oil circuit breaker Download PDF

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Publication number
US1849875A
US1849875A US512936A US51293631A US1849875A US 1849875 A US1849875 A US 1849875A US 512936 A US512936 A US 512936A US 51293631 A US51293631 A US 51293631A US 1849875 A US1849875 A US 1849875A
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United States
Prior art keywords
arc
plates
oil
chamber
passage
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Expired - Lifetime
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US512936A
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English (en)
Inventor
Ernest G Kees
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Priority to US512936A priority Critical patent/US1849875A/en
Priority to DES102969D priority patent/DE587375C/de
Application granted granted Critical
Publication of US1849875A publication Critical patent/US1849875A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

  • ERNEST G REES, OF WILKINSBUBG, PENNSYLVANIA, ASSIGNOR '10 WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.
  • My invention relates to a circuit-interrupting device and more particularly to an arcquenching structure for a circuit breaker of the oil-immersed type.
  • An object of my invention is to provide means for retaining the arc-quenching fluid in intimate contact with the arc until it is extinguished, so that a large amount of gas will formed for deionizing the arc.
  • a further object of my invention is to provide a structure having passages therein for directing the flow of the deionizing gas through the whole length of the arc.
  • a further object of my invention is to provide a closed chamber in which the pressure of the gas, caused by the arc, forces the are between a series'of plates which elongate it by causing it to assume a wavy shape.
  • a further object of the invention is to provide recesses in the arc-extending structure, formlng pockets in whlch 011 1s retained in intimate contact with the arc.
  • Figs. 2 and 3 are detail views of the plates
  • Fig. 4 is a view, in elevation, of the assembled stack forming the arc chamber.
  • Fig. 5 is a sectional view, on the line V -V of Fig. 4, showing the interior passages in the arc-extinguishing structure.
  • the circuit breaker is shown as having a tank 10, which is filled with an arcextinguishing fluid 11.
  • This fluid may be oil,-
  • the arc-extinguishing structure 19 is built up of a series of plates of insulating material. These plates are of the two types shown in Figs. 2 and 3. Plates 30, shown in Fig. 2, have holes 31 in the centers thereof, and have.
  • the plates are preferably made of insulating material of a porous character, such as Fullerboard, so that they readily retain the oil 11, which the plates 37 are made of fibre.
  • the plates 30 and 37 may all be made from either fiber or Fuller board if desired.
  • the stack of plates constitutes a closed structure, except for the vents 43,which are connected by passages 45 to the central arc passage 47 through which the are is drawn.
  • Insertion of the unslotted plates 37 between the groups of slotted plates 30, provides baflle means for dividing the groove formed by the aligned slots 33 into a plurality of sections.
  • recesses 51 are formed along the sides of the arc passage 47. The recesses 51 retain oil in the passage in intimate contact with the are when it is drawn.
  • the recesses in the slots 33 form pockets 53 in the passages for retaining oil.
  • an arc is The heat of the arc decomposes the oil in the arc passage 47 which retains oil, due to the provision of the recesses 51, and the gases generated by this decomposition of oil creates a pressure in the closed chamber which forces the are into the passa cs 45 leading to the vents 43.
  • the are, there ore, is elongated by taking a sinuous path, as indicated by the dotted line 55, in Fig. 5.
  • the gas generated in the passage 47 can escape only through the passages 45 to the vents 43, and, therefore, it is necessary that it pass through the arc in the direction indicated by the arrows 57.
  • Oil is retained in intimate contact with the portion .of the arc, which is looped into the passages 45, due to the provision of the pockets 53 in the passages 45 so that there is a continuous supply of fresh and relatively cool and unionized gas which passes through the arc and most effectively deionizes it. This action continues until the zero point on the alternating-current wave is reached, when the arc is being deionized at a rate greater than the increase in voltage between the arcing contacts and the arc extinguished.
  • means for forming an are means adjacent to the arc and decomposable thereby to supply a deionizing gas, means for directing said gas to pass transversely through said are and move it laterally, means in said path of motion of the arc to cause the arc to be elongated by assuming a sinuous shape, and means adjacent to said elongated arc to further cool and deionize the are.
  • means for forming an arc means for retaining a fluid decomposable by the are adjacent thereto to supply a deionizing gas, means for causing said gas to pass transversely through the arc and to move it laterally, means in said path of motion of the arc to elongate the are by arresting the motion of spaced portions thereof, and means for retaining some of said fluid in intimate contact with said elongated arc.
  • An arc-quenching device comprising a chamber having a passage for an are therethrough, said chamber being closed except for vents in the side thereof, a groove extending from said passage to said vents, spaced members in said groove serving to divide it into a plurality 0 parts, means adjacent said are path which causes a flow of fluid through the arc, and said chamber causing said fluid to move the are into said spaced members and elongate the are.
  • An arc-quenching device comprising a chamber having a passage through which an arc is initially drawn, said passage having projections therein forming pockets for retaining an arc-quenching fluid, vents in one side of the chamber, a groove of less width than said passage extending from said passage to said vents, and spaced members in said groove serving to divide it into a plurality of sections.
  • An arc-quenching device comprising a chamber havin a passage for an are therethrough, separa le contacts movable through said assage, aligned vents in one side of the chain r, a groove extending from said passage to said vents, pockets in said groove for retaining an arc-quenching fluid, and baflle 'means in said groove jor elongating and deionizing the arc.
  • An arc-quenching device comprising a chamber having a passage through which an arc is initially drawn, said passage having projections therein forming pockets for retaining an arc-quenching fluid, ventsin one side of the chamber, a groove of less width than said passage extending from said passage to said vents, pockets in said groove for retaining an arc-quenching fluid, and baflie means in said groove for elongating and deionizing the arc.
  • an arc chamber comprising a stack of plates having holes therein forming a passage, means for drawing the arc in said passage, a number of said plates having slots, and the remainder of said plates being unslotted and interposed between said slotted plates at spaced intervals throughout the stack, said staclr of plates causing said fluid to move the arc into the space between said unslotted plates and elongate the arc.
  • an arc chamber comprising a stack of plates having holes therein forming a passage, means for drawing the arc in said passage, a number of said plates having slots of less width than said holes, and a recessed portion in said slot, and the remainder of said plates being-unslotted and interposed between said slotted dd) plates at spaced intervals throughout the staclr,
  • an arc chamber comprising a stack of plates having holes therein forming a passage, rneans tor drawing the arc in said passage, the holes in some of said plates being of difl'erent dimensions than in others of said plates to form pockets in said stack, a number of said plates having slots and the remainder of said plates being unslotted and interposed between said slotted plates at spaced intervals, said stack of plates causing said fluid to move the are into the spaces between said unslotted plates and elongate the are.
  • an arc chamber comprising a stack of plates having holes therein forming a passage through which an arc may be drawn. the holes in some of said plates being of different dimensions than in others of said plates to form'pockets in said stack, a number of said plates having slots, and recessed portions in said slots, and the remainder of said plates being unslotted and interposed between said slotted plates at spaced intervals.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates having holes therein, the edges of which define a passage for the arc and retain oil in close proximity thereto, some of said plates having slots extending from said holes to form a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals throughout said stack and dividing said groove into a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the arc.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates having holes therein, the dimensions of said holes in some of said plates being difierent from those in others of said plates so as to form pockets for the retention of oil in the arc passage formed by said holes,
  • some of said plates having slots extending from said holes to form a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals and dividing said groove into a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the arc.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates having holes therein, the edges of which define a passage for the are and retain oil in close proximity thereto, some of said plates having slots extending from said holes to form a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals and dividing said groove into a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the arc, and some of said slotted plates having recesses in the sides of the slot for retaining oil in proximity to the loops of said arc.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates having holes therein, the dimensions of said holes insome of said plates being different from those in others of said plates so as to form pockets for theretention of oil in the arc passage formed by said holes,
  • some of said plates having slots extending from saidholes to form a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals and dividing said groove inte a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the arc, and some of said slotted places having recesses in the sides of the slot 4 Leaaavs for retaining oil in proximity to the loops of said are.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates some of which are of porous insulating material and have holes therein, theedges of which define a passage for the are and retain oil in close proximity thereto, some of said plates having slots extending from said holes to form a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals throughout said stack and dividing said groove into a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the are.
  • an arc-quenching chamber means for drawing an arc in said chamber, said chamber comprising a stack of plates some of which are of porous insulating' material and have holes therein, the dimensionsof said holes in some of said plates being different from those in others of said plates so as to form pockets for the retention of oil in the arc passage formed by said holes, some of said plates having slots extending from said holes forming a groove, and others of said plates being unslotted and interposed between said slotted plates at spaced intervals throughout said stack and dividing said groove into a plurality of vents into which said are is looped by the flow of the gas formed by the decomposition of oil by the arc, and some of said slotted plates having recesses in the sides of the slot for retaining oil in proximity to the loops of said are.
US512936A 1931-02-02 1931-02-02 Oil circuit breaker Expired - Lifetime US1849875A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US512936A US1849875A (en) 1931-02-02 1931-02-02 Oil circuit breaker
DES102969D DE587375C (de) 1931-02-02 1932-01-27 Vorrichtung fuer die Lichtbogenloeschung an den Unterbrechungsstellen von Fluessigkeitsschaltern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512936A US1849875A (en) 1931-02-02 1931-02-02 Oil circuit breaker

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US1849875A true US1849875A (en) 1932-03-15

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US512936A Expired - Lifetime US1849875A (en) 1931-02-02 1931-02-02 Oil circuit breaker

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DE (1) DE587375C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467542A (en) * 1945-06-02 1949-04-19 Allis Chalmers Mfg Co Arc extinguishing device
US2496704A (en) * 1945-03-15 1950-02-07 Westinghouse Electric Corp Circuit interrupter
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2647973A (en) * 1949-07-18 1953-08-04 Pacific Electric Mfg Corp Circuit interrupter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502992A (en) * 1943-12-16 1950-04-04 Westinghouse Electric Corp Circuit interrupter
US2496704A (en) * 1945-03-15 1950-02-07 Westinghouse Electric Corp Circuit interrupter
US2467542A (en) * 1945-06-02 1949-04-19 Allis Chalmers Mfg Co Arc extinguishing device
US2647973A (en) * 1949-07-18 1953-08-04 Pacific Electric Mfg Corp Circuit interrupter

Also Published As

Publication number Publication date
DE587375C (de) 1933-11-02

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