US3632931A - Arc-quenching chamber - Google Patents

Arc-quenching chamber Download PDF

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Publication number
US3632931A
US3632931A US10782A US3632931DA US3632931A US 3632931 A US3632931 A US 3632931A US 10782 A US10782 A US 10782A US 3632931D A US3632931D A US 3632931DA US 3632931 A US3632931 A US 3632931A
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US
United States
Prior art keywords
arc
plates
quenching chamber
pairwise
quenching
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
US10782A
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English (en)
Inventor
Rostislav Sergeevich Kuznetsov
Alexandr Grigorievich Uskach
Vladimir Grigorievich Kostikov
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Individual
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Individual
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Publication date
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Publication of US3632931A publication Critical patent/US3632931A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H2009/367—Metal parts defining a recurrent path, e.g. the subdivided arc is moved in a closed path between each pair of splitter plates

Definitions

  • the arc-quenching chamber disclosed comprises a De-lon grid composed of metal plates which are arranged in parallel planes, have the shape of an S, and are joined pairwise by a current-conducting neck; the minor arcs circulate between said plates; said plates have U-shaped projections at the entrance of the arc to said grids and are pairwise joined by a neck at the central part.
  • the present invention relates to electric switching devices and more specifically to the arc-quenching chambers of such devices, comprising metal plates.
  • arc-quenching chambers comprising a De-Ion grid composed of metal plates arranged in parallel planes, between which minor arcs circulate.
  • the metal plates in such chambers are fabricated from a nonmagnetic material.
  • the aim of the present invention is to eliminate the abovelisted disadvantages.
  • the objective of the invention is to provide an arcquenching chamber of small size, simple design and manufacture owing to the changed shape of the metal plates.
  • an arcquenching chamber comprising a De-Ion grid composed of metal plates arranged in parallel planes, between which the minor arcs circulate, the said plates are, according to the invention, given the shape of an S and joined together pairwise by current-conducting necks.
  • the said plates have U-shaped projections at the entrance of the arc to the said grid and be joined by a neck in their central part.
  • the arc-quenching chamber disclosed herein is more reliable, has smaller size, is simpler in design and to make than existing chambers utilizing the circulation of the arc in them.
  • the chamber disclosed herein is intended for use in circuit breakers and contactors. It may also be successfully used in other switching devices.
  • FIG. 1 shows an arc-quenching chamber, fully assembled, according to the invention
  • FIG. 2 shows a metal plate with a projection, according to the invention
  • FIG. 3 shows the side elevation of twin plates formed by the plates of FIG. 2, according to the invention
  • FIGS. 4 and 5 shows current loops in the grids, according to the invention
  • FIG. 6 shows a metal plate, according to the invention
  • FIG. 7 shows the side elevation of twin plates of FIG. 6.
  • an arc-quenching chamber comprising a De-Ion grid composed of De-Ion element 1 formed by twin S-shaped plates 2 between which insulating barriers 3 are provided.
  • the plates 1 and the barriers 3 are attached to the shields 4 of the arc-quenching chamber.
  • FIG. I shows only two twin plates, but the remaining ones are similar to them. Besides, the figure omits the mounting hardware and some structural elements since they are of no fundamental importance.
  • Each plate 2 has a projection 5 in the central part, and also an U shaped projection 6 and a notch 7 at the entrance of the arc.
  • a twin plate is formed by joining together, say by welding, the plates 2 along the contact surface 8 between the projections 5. The neck thus formed conducts current.
  • the curled portions 9 and I0 of the plates 1 form airgaps I2 and 13 with the straight portions 11 of the same plates.
  • the plates 1 should preferably be made of a ferromagnetic material.
  • the electric are striking between the contact of the switching device may be caused to move between the shields 4 towards the De-lon grid by any known method.
  • the pro ections 6 augment the own magnetic field of the arc and enable it to be pulled into the notch 7 and split into minor arcs.
  • U-shaped-current loops with bent ends diagrammatically shown in FIG. 4.
  • the arrows indicate the direction of current flow in the elements I and in the minor arcs l4.
  • the minor arcs 14 move along the curled surface 9 and 10 clockwise, in the direction of the airgaps 12 and I3, and span them to form further U-shaped current loops, so that the circulation of the minor arcs goes on, being repeated over and over again around a circular path until the arcs are all extinguished.
  • plates fabricated from a ferromagnetic material facilitate the transfer of the minor arcs across the airgaps 12 and 13 and the formation of base points as the arc enters the grid.
  • the individual plates 2 may be arranged so that the adjacent surface 9 and 10 of the twin plates are curled in opposite directions, such as shown in FIG. 5. This arrangement of the elements 1 augments the blowout magnetic field and adds to the efficiency of arc quenching.
  • the plates 2 may be made without projections 6, such as shown in FIGS. 6 and 7. This arrangement is preferable in extinguishing a very strong arc, because the projection 6 have practically no effect on the formation of its base points.
  • An arc-quenching chamber comprising; a De-Ion grid including a plurality of metal plates arranged in parallel planes and connected electrically pairwise at their center portions, said metal plates being essentially formed into an S-shaped configuration and adapted to have minor electrical arcs circulating therebetween along substantially circular trajectories.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electron Sources, Ion Sources (AREA)
US10782A 1970-02-12 1970-02-12 Arc-quenching chamber Expired - Lifetime US3632931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1078270A 1970-02-12 1970-02-12

Publications (1)

Publication Number Publication Date
US3632931A true US3632931A (en) 1972-01-04

Family

ID=21747402

Family Applications (1)

Application Number Title Priority Date Filing Date
US10782A Expired - Lifetime US3632931A (en) 1970-02-12 1970-02-12 Arc-quenching chamber

Country Status (4)

Country Link
US (1) US3632931A (enrdf_load_stackoverflow)
DE (1) DE2006992B2 (enrdf_load_stackoverflow)
FR (1) FR2080267A5 (enrdf_load_stackoverflow)
GB (1) GB1258375A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2929555A4 (en) * 2012-12-04 2016-08-31 Larsen & Toubro Ltd ARC FLASH ARRANGEMENT FOR ARC FLASH ON ELECTRIC SWITCHING DEVICE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632074A (en) * 1950-06-29 1953-03-17 Allis Chalmers Mfg Co Arc chute utilizing interleaved u-shaped conductive members
US2934629A (en) * 1956-09-10 1960-04-26 Comp Generale Electricite Arc blowing chimneys for circuit breakers having a large breaking capacity
AT208939B (de) * 1957-10-04 1960-05-10 Bbc Brown Boveri & Cie Vielfachfunkenstrecke für Überspannungsableiter mit spannungsabhängigen Widerständen
US3495056A (en) * 1965-07-22 1970-02-10 Ite Imperial Corp Current limiting interrupter with arc-inserted non-linear resistors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632074A (en) * 1950-06-29 1953-03-17 Allis Chalmers Mfg Co Arc chute utilizing interleaved u-shaped conductive members
US2934629A (en) * 1956-09-10 1960-04-26 Comp Generale Electricite Arc blowing chimneys for circuit breakers having a large breaking capacity
AT208939B (de) * 1957-10-04 1960-05-10 Bbc Brown Boveri & Cie Vielfachfunkenstrecke für Überspannungsableiter mit spannungsabhängigen Widerständen
US3495056A (en) * 1965-07-22 1970-02-10 Ite Imperial Corp Current limiting interrupter with arc-inserted non-linear resistors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2929555A4 (en) * 2012-12-04 2016-08-31 Larsen & Toubro Ltd ARC FLASH ARRANGEMENT FOR ARC FLASH ON ELECTRIC SWITCHING DEVICE

Also Published As

Publication number Publication date
DE2006992A1 (de) 1971-09-02
FR2080267A5 (enrdf_load_stackoverflow) 1971-11-12
GB1258375A (enrdf_load_stackoverflow) 1971-12-30
DE2006992B2 (de) 1972-03-02

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