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NO128085B - - Google Patents

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Publication number
NO128085B
NO128085B NO01164/70A NO116470A NO128085B NO 128085 B NO128085 B NO 128085B NO 01164/70 A NO01164/70 A NO 01164/70A NO 116470 A NO116470 A NO 116470A NO 128085 B NO128085 B NO 128085B
Authority
NO
Norway
Prior art keywords
chamber
openings
slot openings
gas chamber
shape
Prior art date
Application number
NO01164/70A
Other languages
Norwegian (no)
Inventor
Y Teijeiro B Calvino
Original Assignee
Magrini Fab Riun Scarpa
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 Magrini Fab Riun Scarpa filed Critical Magrini Fab Riun Scarpa
Publication of NO128085B publication Critical patent/NO128085B/no

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Landscapes

  • Circuit Breakers (AREA)
  • Catching Or Destruction (AREA)

Description

Foreliggende oppfinnelse vedrører en elektrisk bryter med trykkgasskammer for utblåsing av lysbuen mellom bryterens kontakter, hvilket trykkgasskammer er fast forbundet med et brytekammer og kommuniserer med dette kammer over et antall spalteåpninger, fortrinnsvis fire sådanne åpninger, som er begrenset av en indre sylindrisk The present invention relates to an electric switch with a pressurized gas chamber for blowing out the arc between the switch's contacts, which pressurized gas chamber is firmly connected to a breaking chamber and communicates with this chamber via a number of slit openings, preferably four such openings, which are limited by an inner cylindrical

overflate og en ytre stumpkonisk overflate som begge har sin basis ved den side som vender mot trykkgasskammeret som sammen med brytekammeret er stivt forbundet med en bolt som er glidbar i et fast ' stempel, over hvilket trykkgasskammeret er forskyvbart .og danner dette kammers bunn, og hvor spalteåpningene. som forbinder de to kammere, avtar gradvis mot brytekammeret, idet de to flater som begrenser spaltene er innbyrdes forbundet over radiale ribber. surface and an outer obtuse conical surface which both have their base on the side facing the compressed gas chamber which, together with the breaking chamber, is rigidly connected by a bolt which is slidable in a fixed piston, over which the compressed gas chamber is displaceable and forms the bottom of this chamber, and where the slot openings. which connects the two chambers, gradually decreases towards the breaking chamber, as the two surfaces which limit the slots are mutually connected via radial ribs.

En elektrisk br<y>ter med selv-utblåsing av lysbuer ved hjelp av komprimert gass omfatter en fast kontakt og en bevegelig kontakt av hylseformet type med sistnevnte avvekslende forbundet med bunnen av et sylindrisk kammer - som inneholder komprimert gass - og et munnstykke hvor utblåsingen av lysbuen skjer ved hjelp av den aksiale gasstrøm som leveres fra det sylindriske kammer. An electric breaker with self-exhaustion of arcs by means of compressed gas comprises a fixed contact and a movable contact of the sleeve-shaped type with the latter alternately connected to the bottom of a cylindrical chamber - containing compressed gas - and a nozzle where the exhalation of the arc takes place by means of the axial gas flow supplied from the cylindrical chamber.

Hensikten med oppfinnelsen er å skaffe et forbedret brytekammer med sikte på å øke brytekapasiteten av brytekamre av den ovenfor beskrevne art, særlig når- det gjelder meget høye strømstyr-ker, såsom kortslutningsstrømmer. En annen hensikt er å skaffe et brytekammer med øket kapasitet uten at dette betinger forandring med hensyn til bryterens elektriske karakteristikk, hvilket er nød-vendig for å oppnå en korrekt virkemåte, også når kortslutnings-strømmen skal brytes. The purpose of the invention is to provide an improved breaking chamber with the aim of increasing the breaking capacity of breaking chambers of the type described above, particularly when it comes to very high amperages, such as short-circuit currents. Another purpose is to provide a breaker chamber with increased capacity without this requiring a change with respect to the breaker's electrical characteristics, which is necessary to achieve correct operation, also when the short-circuit current is to be broken.

Det særegne ved oppfinnelsen er at der fra stemplets indre, øvre flate rager opp fremspring som passer inn mellom de radiale ribber og hvis antall tilsvarer antallet spalteåpninger, hvilke fremsprings form er komplementær til spalteåpningenes form for å redusere eller eliminere dødrommet mellom spalteåpningene og fremspringene. The peculiarity of the invention is that projections protrude from the inner, upper surface of the piston which fit between the radial ribs and whose number corresponds to the number of slot openings, the shape of which projections is complementary to the shape of the slot openings in order to reduce or eliminate the dead space between the slot openings and the projections.

Ved hjelp av oppfinnelsen oppnås en vesentlig økning av kompressjonsforholdet på den elektriske bryter, nemlig en økning av forholdet mellom det maksimale volum av gassen i det sylindriske kammer (inklusive dødrom med hensyn til munnstykkets tverrsnitts-areal) og det tilsvarende gjenværende minimale volum ved åpnings-, slagets sluttfase. With the help of the invention, a significant increase in the compression ratio on the electric switch is achieved, namely an increase in the ratio between the maximum volume of the gas in the cylindrical chamber (including dead space with regard to the cross-sectional area of the nozzle) and the corresponding remaining minimum volume at opening , the final phase of the battle.

Oppfinnelsen skal forklares nærmere under henvisning til tegningen, hvis fig. 1 viser et aksialsnitt av et brytekammer for en elektrisk bryter med selvslukkende gass med kontaktene sluttet, fig. 2 viser det samme med kontaktene helt åpne, og fig. 3 viser et tverrsnitt etter linjen Y - Y på fig. 1. The invention shall be explained in more detail with reference to the drawing, if fig. 1 shows an axial section of a breaking chamber for an electric switch with self-extinguishing gas with the contacts closed, fig. 2 shows the same with the contacts completely open, and fig. 3 shows a cross-section along the line Y - Y in fig. 1.

Som allerede nevnt omfatter elektriske brytere av denne art en fast kontakt 1, en bevegelig kontakt 2 som er av hylsetypen og forbundet med bunnen 3 av et sylindrisk kammer 3' som inneholder den komprimerte gass. Kammeret 3' kan, drevet av en kontrollstav 5, gli på et stempelformet legeme 6. Også et munnstykke 4 er forbundet med det sylindriske kammer. As already mentioned, electrical switches of this kind comprise a fixed contact 1, a movable contact 2 which is of the sleeve type and connected to the bottom 3 of a cylindrical chamber 3' containing the compressed gas. The chamber 3' can, driven by a control rod 5, slide on a piston-shaped body 6. A nozzle 4 is also connected to the cylindrical chamber.

Fordypninger. 7 (fig. 1 og 2), i alminnelighet fire sådanne, er vinkelforskutt og befinner seg i bunnen av det sylindriske kammer 3' som inneholder den komprimerte gass og har i det vesentlige form' av en avstumpet kjegle med bred basis. Fordypningene 7 er konisk formet med konus-generatrisen (loddrett på basisplanet) i kontakt med legemet som består av kontaktfingrene 2. Depressions. 7 (figs. 1 and 2), generally four such, are angularly offset and are located at the bottom of the cylindrical chamber 3' which contains the compressed gas and essentially has the shape of a truncated cone with a wide base. The recesses 7 are conically shaped with the cone generatrix (perpendicular to the base plane) in contact with the body consisting of the contact fingers 2.

Bryteren omfatter også fremspring 8 med en form som tilsvarer fordypningenes 7 form og rager ut fra den øvre ende av det faste stempelformede legeme 6. Formen av disse fremspring er nærmere bestemt således valgt at de praktisk talt fullstendig fyller fordypningene 7 når bryterens kontakter er åpne (fig. 2) for på den måte å redusere det frie volum av fordypningene til et minimum. The switch also includes protrusions 8 with a shape that corresponds to the shape of the recesses 7 and protrudes from the upper end of the fixed piston-shaped body 6. The shape of these protrusions is more specifically chosen so that they practically completely fill the recesses 7 when the switch's contacts are open ( fig. 2) in order to reduce the free volume of the recesses to a minimum.

De beste resultater ble i praksis oppnådd ved at fordypningenes 7 basis ble valgt så stor som mulig og ved at deres konu-sitet ble redusert, hvilket bevirker en nedsettelse av gassens hvir-velbevegelse og av strømningstapene til et minimum. In practice, the best results were achieved by selecting the base of the depressions 7 as large as possible and by reducing their conicity, which causes a reduction of the swirling movement of the gas and of the flow losses to a minimum.

Som vist på fig. 3 er der anordnet fortrinnsvis fire fordypninger, hvis basis har form av en sirkelsektor ug som er begrenset av fire radiale ribber 7'. As shown in fig. 3 there are preferably arranged four recesses, the base of which has the shape of a circle sector ug which is limited by four radial ribs 7'.

Claims (1)

Elektrisk bryter med trykkgasskammer (3<1>) for utblåsing av lysbuen mellom bryterens kontakter (1, 2), hvilket trykkgasskammer (3') er fast forbundet med et brytekammer (4) og kommuniserer med dette kammer (4) over et antall spalteåpninger (7), fortrinnsvis fire sådanne åpninger, som er begrenset av en indre sylindrisk overflate og en ytre stumpkonisk overflate som begge har sin basis ved den side som vender mot trykkgasskammeret (3<1>) som sammen med brytekammeret (4) er stivt forbundet med en bolt (5) som er glidbar i et fast stempel (6), over hvilket trykkgasskammeret (3<1>) er forskyvbart og danner dette kammers (3<1>) bunn, og hvor spalteåpningene (7) som forbinder de to kammere (3', 4) avtar gradvis mot brytekammeret (4), idet de to flater som begrenser spaltene (7) er innbyrdes forbundet over radiale ribber (71)/Electric switch with pressurized gas chamber (3<1>) for blowing out the arc between the switch's contacts (1, 2), which pressurized gas chamber (3') is fixedly connected to a switching chamber (4) and communicates with this chamber (4) via a number of slit openings (7), preferably four such openings, which are limited by an inner cylindrical surface and an outer frustoconical surface both of which have their base at the side facing the compressed gas chamber (3<1>) which together with the breaking chamber (4) is rigidly connected with a bolt (5) which is slidable in a fixed piston (6), over which the compressed gas chamber (3<1>) is displaceable and forms the bottom of this chamber (3<1>), and where the slot openings (7) which connect the two chambers (3', 4) gradually decrease towards the breaking chamber (4), as the two surfaces which limit the slots (7) are interconnected via radial ribs (71)/ karakterisert ved at der fra stemplets (6) indre, øvre flate rager opp fremspring (8) som passer inn mellom de radiale ribber (.7') og hvis antall tilsvarer antallet spalteåpninger (7), hvilke fremsprings (8) form er komplementær til spalteåpningenes (7) form for å redusere eller eliminere dødrommet mellom spalteåpningene (7) og fremspringene.characterized in that projections (8) protrude from the inner, upper surface of the piston (6) which fit between the radial ribs (.7') and whose number corresponds to the number of slot openings (7), the shape of which projections (8) is complementary to the shape of the slot openings (7) to reduce or eliminate the dead space between the slot openings (7) and the protrusions.
NO01164/70A 1969-04-03 1970-03-31 NO128085B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1503669 1969-04-03

Publications (1)

Publication Number Publication Date
NO128085B true NO128085B (en) 1973-09-24

Family

ID=11146205

Family Applications (1)

Application Number Title Priority Date Filing Date
NO01164/70A NO128085B (en) 1969-04-03 1970-03-31

Country Status (9)

Country Link
US (1) US3602670A (en)
JP (1) JPS505378B1 (en)
BE (1) BE766453Q (en)
BR (1) BR7018011D0 (en)
DE (1) DE2015473B2 (en)
FR (1) FR2042842A5 (en)
GB (1) GB1310906A (en)
NO (1) NO128085B (en)
SE (1) SE360947B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524067A (en) * 1975-05-30 1977-01-12 Mitsubishi Electric Corp Gas breaker
NL7607487A (en) * 1975-08-07 1977-02-09 Westinghouse Electric Corp BREATH TYPE PRESSURE GAS SWITCH.
US4048456A (en) * 1976-04-01 1977-09-13 General Electric Company Puffer-type gas-blast circuit breaker
US4387280A (en) * 1978-05-29 1983-06-07 General Electric Company High speed hydraulically-actuated operating system for an electric circuit breaker
YU218778A (en) * 1978-09-15 1982-06-30 Sour Energoinvest Ro Istraziv High-voltage interruption element of a pushing type with an improved and simplified system of arc contact and nozzle
DE3041801C2 (en) * 1980-11-06 1986-11-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Auto-pneumatic pressure gas switch
DE3127678A1 (en) * 1981-07-14 1983-02-10 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau HIGH VOLTAGE CIRCUIT BREAKERS
DE3430306C2 (en) * 1984-08-15 1987-03-12 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Electrical pressure gas circuit breaker
DE3822410C1 (en) * 1988-07-01 1989-10-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De Sulphur hexa:fluoride compressed gas switch - has thread between nozzle and cylinder to better withstand force and temp. loading without enlargement of actual mass of nozzle
US9035211B2 (en) 2011-07-20 2015-05-19 Pennsylvania Breaker, Llc Gas blast interrupter

Also Published As

Publication number Publication date
DE2015473A1 (en) 1970-10-08
BE766453Q (en) 1971-09-16
BR7018011D0 (en) 1973-01-16
GB1310906A (en) 1973-03-21
SE360947B (en) 1973-10-08
FR2042842A5 (en) 1971-02-12
JPS505378B1 (en) 1975-03-03
US3602670A (en) 1971-08-31
DE2015473B2 (en) 1979-03-08

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