US2561486A - High-tension circuit breaker - Google Patents

High-tension circuit breaker Download PDF

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Publication number
US2561486A
US2561486A US26521A US2652148A US2561486A US 2561486 A US2561486 A US 2561486A US 26521 A US26521 A US 26521A US 2652148 A US2652148 A US 2652148A US 2561486 A US2561486 A US 2561486A
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US
United States
Prior art keywords
nozzles
air
guides
flanges
diaphragms
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
US26521A
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English (en)
Inventor
Thibaudat Albert
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.)
Forges et Ateliers de Constructions Electriques de Jeumont SA
Original Assignee
Forges et Ateliers de Constructions Electriques de Jeumont SA
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 Forges et Ateliers de Constructions Electriques de Jeumont SA filed Critical Forges et Ateliers de Constructions Electriques de Jeumont SA
Application granted granted Critical
Publication of US2561486A publication Critical patent/US2561486A/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
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc

Definitions

  • This invention relates to high tension circuit breakers.
  • the invention has likewise for its object to constitute each unit by a double nozzle with centripetal air inlet and axial air outlet, these. nozzles' being supported elastically in the interior of. hollow" metal elements which are separated from one another by tubular insulators.
  • Another object of the invention is to arrange these hollow metal elements and their insulators in such a way as to form a hollow vertical column which supports and insulates all the individual breaking units.
  • One of the objects of the invention is likewise to ensure in a very simple and efficient manner the desirable economy of. compressed air.
  • the improved arrangement according to" the invention greatly facilitates and simplifies the application of various other improved means;v relating. in particular to the structure of the ele mcntary'breaking units, to their association with a view to reducing the total height of the apparatus, to theiroperation, and soon.
  • the in. vent-ion provides simple and robust apparatus, very effective and adapted to supporthigh work ing' currents; each individual breaking unit can. offer the maximum breaking power adapted to be furnished by a good testing station, as well as a current rating suiiicient' for this individual breaking unit to be capable of use separately as a powerful circuit-breaker for moderate ten- $1011.
  • Fig. 1 is a part vertical section of the apparatus
  • Fig. 2 is a horizontal section of Fig. l on the broken line lw-bc.
  • one individual breaking unit comprises two movable nozzles I and 2 adapted to slide in the axial direction.
  • these. nozzles are in direct contact with one another, as shown, under the pressure of. the springs 3 and 4, which bear upon shoulders provided for this purpose upon guide members 5 and (ii, the springs being surrounded by" protective sleeves 3b and 1a which are sup ported by the guide lfl'iEl'IIbBlS.
  • These members and 6 are rigid, indeformable and arranged to prevent any warping or wedging of the movable nozzles l and 2.
  • the next individual breaking unit comprises,
  • a flexible metal diaphragm l, 8, 7a, etc. being of circular shape, eitherflat or undulated.
  • These diaphragms, as well as the guide members 6' and 5a, are clamped between flanges 9 and Ill attached to two tubular insulators H and t2. Clamping is effected with interposition of tubular spacer elements l3 and rings It; the clamping means, such as bolts, screws or the like, have not been represented, in order. to simplify the drawing.
  • the clamping oi the guide member 5.
  • the spacer elements [3 are constituted by short metal tubes placed at suitable distances. apart in alignment with corresponding air-holes provideo; in the guide members 6 and be, as well as in the. flexible diaphragms 8 and la, and in the rings I 4".
  • Fig.v 2 shows the arrangement of the elements l3", M in relation to the flexible diaphragm. la and" other parts.
  • the guidev members 5, 6, 5a,. etc. containsmall orifices re, 20, 20a, etc. respectively, the. purpose of which will be explained hereinafter.
  • the metal flanges 9, Ill, l5, etc. are attached. to
  • each metal part designated by H in the drawing
  • H in the drawing the height of each metal part, designated by H in the drawing, may be very small and that the height of an individual breaking unit is practically equal to the axial length of the double nozzle. In other words, the total height of the entire pole of the circuit-breaker is reduced to the minimum compatible with the needs of insulation.
  • the apparatus is represented in Fig. 1 in the closed-circuit position.
  • the current which enters at the terminal 24, passes through the flexible metal diaphragm I, th nozzles I and 2, the diaphragm 8, the spacer members I 3, the diaphragms 1a, the nozzles of th next individual breaking unit, and so on to the bottom of the column. It will be seen that this mode of construction allows the suppression of all special connections between the circuit breaking units.
  • compressed air for which a passage is opened as usual.
  • an air-valve (not shown) mounted in the base of the apparatus, fills the vertical column by passing in the direction of the arrows through the tubular spacers I3 between adjacent breaking units, the number of spacers l3 at each level being sufficient for the loss of head to remain negligible.
  • the purpose of the orifices I9, 20, 28a, etc. is therefore to regulate th speed of separation of the nozzles and to avoid any tendency to fluttering or hammering of the contact surfaces; these orifices may be adjustable in area.
  • the various compression springs 3, 4, 3a, etc. may be regulated in such a way that the separation of the nozzles in the several breaking units takes place simultaneously.
  • the compressed air passes thereafter along the nozzle bores, effects the blow-out or the arcs and escapes radially to the free air between the teeth I! of the end covers and between th spacers [3 at the intermediate levels.
  • this escape of air is indicated by radial arrows.
  • the nozzles 2 and la of adjacent breaking units touch one another, while the nozzle I of the top unit abuts against the cover I6, so that the discharge of air is greatly reduced or completely stopped, and air-pressure is maintained in the interior of the apparatus.
  • the apparatus may comprise any suitable means (not shown) for protecting its interior against rain and snow.
  • There may be provided for this purpose hinged or flexible shutters which are normally closed and which open in the course of operation of the circuit-breaker by the effect of the air-discharge.
  • any electrodes intended to limit the length of the arcs. It is obvious that there is nothing to prevent the application of means of this kind, but in the example considered, the co-axial alignment of the nozzles allows, if desired, the total suppression of such means. If such electrodes are not used, the length of the individual arcs formed in each pair of nozzles is not defined or limited. These individual arcs can therefore join up and reach to the end parts of the circuit breaker, such as the top cover it and a corresponding member (not shown) at the other end of the apparatus.
  • sin le arc can be formed between the end covers (cover H3 at the top and corresponding member at the other end) such single arc, traversing all the nozzles in series, can be blown out at several levels.
  • the electrodes mentioned above may be provided so as to limit the length of the individual arcs, as shown for example by the element 25 in Fig. 1.
  • a high tension compressed air circuitbreaker of the multiple break type formed by a plurality of interrupting units connected in series, each unit comprising a pair of pneumatically operated axially slidable nozzles adapted for contact making, elastic means for establishing contact between said nozzles, guiding means for said nozzles, said guiding means having the form of cylinders provided with rigid flanges, elastic diaphragms arranged as electrical connections to said nozzles and adapted to form with said rigid flanges elastic walled cavities, means for slowly filling said cavities with compressed air, assembling means comprising a tubular insulator surrounding said nozzles and guiding means, metallic flange elements upon the ends of said insulator attached to said rigid flanges and to said elastic diaphragms so as to form a vertical column assembling all said interrupting units, a plurality of registering passages through the peripheries of said flanges and diaphragms, and metallic spacing elements between said rigid flanges, said
  • a high tension circuit breaker according to claim 1, means for regulating the air inlet into said elastic walled cavities in order to control the speed of separation of said slidable nozzles, said regulating means comprising restricted apertures for inlet of air into said cavities.
  • intermediate nozzles having their outlet ends adapted to form mutual stops, and separate stationary abutments for the outlets of the end nozzles, whereby the air flow is stopped at the end of the opening movement of all the nozzles.
  • a plurality of individual breaking units each unit comprising a pair of axially movable contact making nozzles of the conventional centripetal inlet and axial outlet type with inner arc-length limiting electrodes, a pair of rigid flanged guiding elements for said movable nozzles, a pair of circular flexible metallic diaphragms sealed to the peripheries of said guiding elements as well as to said nozzles and arranged as current con ducting elements, said guiding elements being provided with small openings for regulating the entry of air into the spaces between said guidin elements and said diaphragms in order to control the opening movement of said contact making nozzles, a pair of compression springs interposed between said nozzles and said guiding elements and adapted to close the contacts of said nozzles, a tubular insulator surrounding each of said individual breaking units, hollow metal assembling flanges secured to the ends of said insulators, tubular metallic spacing elements interposed between the
  • means for interrupting the air flow after a current interruption comprising abutments adapted to close the nozzle outlets at the ends of the respective nozzle movements.
  • a high tension circuit-breaker of the type having multiple breaks and compressed air blowout comprising a plurality of individual breaking units assembled in a column and arranged in series, each of said breaking units including a pair of axially slidable contact-making nozzles, rigid flanged guides for said nozzles, springs urging said nozzles into contact with one another, flexible diaphragms conductively connected to said nozzles and sealed to said rigid flanged guides in order to form elastic-walled cavities, throttling devices in said guides for slowly filling said cavities with compressed air, a tubular insulator surrounding said nozzles and guides, metallic assembly flanges attached to the ends of said insulator, means for connecting said assembly flanges to the flanges of said guides and to the peripheries of said diaphragms, and tubular spacing means for passing compressed air upwardly of said column between the respective tubular insulators and the nozzles and guides therein.
  • a high tension circuit-breaker of the type having multiple breaks and compressed air blowout comprising a plurality of individual breaking units assembled in a column and arranged in series, each of said breaking units including a 1 pair of axially slidable contact-making nozzles, rigid flanged guides for said nozzles, springs urging said nozzles into contact with one another, flexible diaphragms conductively connected to said nozzles and sealed to the peripheries of said guides in order to form elastic cavities, means for slowly filling said cavities with compressed air in order to control the opening speed of said contact making nozzles, a tubular insulator surrounding said nozzles and guides, metallic assembly flanges attached to the ends of said insulator, means for connecting said assembly flanges to the flanges of said guides and to the peripheries of said diaphragms, and means for passing com- 6 pressed air upwardly of said column between the respective tubular insulators and the nozzles and guides therein, said air passing means including tub
  • a high tension circuit-breaker of the type having multiple breaks and compressed air blowout comprising a plurality of individual breaking units assembled in a column and arranged in series, each of said breaking units including a pair of axially slidable contact-making nozzles, rigid flanged guides for said nozzles, springs urging said nozzles into contact with on another, flexible diaphragms conductively connected to said nozzles and sealed to the peripheries of said guides in order to form elastic cavities, means for slowly filling said cavities with compressed air in order to control the opening speed of said contact making nozzles, a tubular insulator surrounding said nozzles and guides, metallic assembly flanges attached to the ends of said insulator, means for connecting said assembly flanges to the flanges of said guides and to the peripheries of said diaphragms, and means for passing compressed air upwardly of said column between the respective tubular insulators and the nozzles and guides therein, said air passing means including tubular metal spacers inter
  • a high tension circuit-breaker of the type having multiple breaks and compressed air blowout comprising a plurality of individual breaking units assembled in a column, each of said breaking units including a pair of axially slidable contact-making nozzles, rigid flanged guides for said nozzles, springs urging said nozzles into contact with one another, flexible diaphragms conductively connected to said nozzles and sealed to the peripheries of said guides in order to form elastic cavities, means for slowly filling said cavities with compressed air in order to control the opening speed of said contact making nozzles, a tubular insulator surrounding said nozzles and guides, metallic assembly flanges attached to the ends of said insulator, means for connecting said assembly flanges to the flanges of said guides and to th peri heries of said diaphragms, and means for passing compressed air upwardly of said column between the respective tubular insulators and the nozzles and guides therein, with means for exhaust of air discharged through the end nozzles, said

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Circuit Breakers (AREA)
US26521A 1947-05-20 1948-05-12 High-tension circuit breaker Expired - Lifetime US2561486A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR881684X 1947-05-20

Publications (1)

Publication Number Publication Date
US2561486A true US2561486A (en) 1951-07-24

Family

ID=9373187

Family Applications (1)

Application Number Title Priority Date Filing Date
US26521A Expired - Lifetime US2561486A (en) 1947-05-20 1948-05-12 High-tension circuit breaker

Country Status (6)

Country Link
US (1) US2561486A (de)
BE (1) BE482302A (de)
DE (1) DE881684C (de)
FR (1) FR947658A (de)
GB (1) GB643216A (de)
NL (1) NL70964C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672541A (en) * 1951-12-27 1954-03-16 Gen Electric Electric circuit interrupter
US2883516A (en) * 1957-05-27 1959-04-21 Norbert H Bek Resistance welding equipment
US3218421A (en) * 1962-05-21 1965-11-16 Latour Andre Gas blast circuit breaker having actuating means responsive to differential pressure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525574C (de) * 1931-05-26 Voigt & Haeffner Akt Ges Pressgasschalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672541A (en) * 1951-12-27 1954-03-16 Gen Electric Electric circuit interrupter
US2883516A (en) * 1957-05-27 1959-04-21 Norbert H Bek Resistance welding equipment
US3218421A (en) * 1962-05-21 1965-11-16 Latour Andre Gas blast circuit breaker having actuating means responsive to differential pressure

Also Published As

Publication number Publication date
DE881684C (de) 1953-07-02
BE482302A (de)
FR947658A (fr) 1949-07-08
NL70964C (de)
GB643216A (en) 1950-09-15

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