EP0025833B1 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

Info

Publication number
EP0025833B1
EP0025833B1 EP80104262A EP80104262A EP0025833B1 EP 0025833 B1 EP0025833 B1 EP 0025833B1 EP 80104262 A EP80104262 A EP 80104262A EP 80104262 A EP80104262 A EP 80104262A EP 0025833 B1 EP0025833 B1 EP 0025833B1
Authority
EP
European Patent Office
Prior art keywords
contact element
gas
blast
switch
contact
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
Application number
EP80104262A
Other languages
German (de)
English (en)
Other versions
EP0025833A1 (fr
Inventor
Rudolf Graf
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh AG
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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Priority to AT80104262T priority Critical patent/ATE1400T1/de
Publication of EP0025833A1 publication Critical patent/EP0025833A1/fr
Application granted granted Critical
Publication of EP0025833B1 publication Critical patent/EP0025833B1/fr
Expired legal-status Critical Current

Links

Images

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
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions

Definitions

  • the invention relates to a gas pressure switch of the type mentioned in the preamble of claim 1.
  • gas pressure switches are known, for example, from CH-A 554597 or from DE-A 2140284.
  • the shielding body has the function during a switch-off stroke to make the electrical field that emanates from the end of the second (usually tubular) contact piece more uniform, so that - after the switching arc has been extinguished - no extreme values of the field strength have arisen.
  • the spring under the action of which the shielding body is located, also has the advantage that the parts of the switch that are moved are effectively decelerated towards the end of a switch-on stroke.
  • the second contact piece, to which the shielding body is assigned is arranged in a stationary manner, from which it follows that the distance to be covered by the first contact piece during a switch-off stroke has to correspond exactly to the switching distance between the contact pieces in the switch-off position.
  • the separation distance between the contact pieces i.e. the minimum distance that the contact pieces have to have from one another so that the switching arc is extinguished at all, the greater the currents to be interrupted. It is of course desirable that this separation distance is achieved as quickly as possible with a switch-off stroke. In the case of the known switches, this requires a long-stroke drive mechanism which, moreover, is sufficiently powerful to bring about the desired separation distance within a useful period.
  • one purpose of the invention is to provide a switch of the type mentioned in which, while maintaining the advantages mentioned, which the shielding body and its spring offer, and using only one and only relatively short-stroke drive the separation distance is reached much faster, and in which the switching distance between the contact pieces in the off position exceeds the length of the stroke of the drive.
  • This purpose is achieved in the proposed pressure gas switch in that the shielding body and the second contact piece are coupled to one another for opposite movement.
  • the blowing nozzle moves the shielding body back in the course of a switch-on stroke, the second contact piece pushes through the blowing nozzle in the direction of the first contact piece. Conversely, if the shielding body can move into its advanced position due to the retracting blowing nozzle during a switch-off stroke, then the second contact piece also moves away from the first contact piece at the same time.
  • a compressed gas switch 10 is shown in the switched-on position in FIG. 1, in the switched-off position in FIG. 3 and in an intermediate position in FIG. 2.
  • This gas pressure switch has two sets of contact pieces.
  • the first set is connected to a switch drive 11, which is only shown schematically, and comprises a first, tubular contact piece 12 and a first, also tubular nominal current contact 13, these two contacts - as will be shown later - are mechanically connected to one another so that they move in the same direction and the same way.
  • the first rated current contact 13 is closed by a flange 14 in the region of its free end.
  • the first rated current contact is slidably mounted on a fixedly supported pump piston 15.
  • This pump piston 15 is provided with a central passage 16, in which the first contact piece 12 is slidably mounted. At least in the switched-on position, a pump chamber 17, which contains an extinguishing gas, is thus enclosed by the flange 14, the inside of the first rated current contact 13, the outside of the first contact piece 12 and the pump piston.
  • a cylindrical extension 19 which extends into the pump chamber 17 and is fixed in the region of its free end via further webs 20 on the outside of the first contact piece 12, is fastened via webs 18.
  • the pump piston 15 there is a recess 21 shaped in the same way as the extension 19, which is intended to receive the extension 19 in the course of the switch-off stroke, as a result of which, as can be seen from FIG "is divided.
  • an overall blowing nozzle 22, made of an electrical insulating material, is attached on the flange 14.
  • This has a nozzle body 23 which has an inlet area 24 starting from the spaces between the struts 18, a narrowest point 25 and an outlet area 26 which widens in the manner of a diffuser.
  • a partition wall 27 in the form of a hollow truncated cone which divides the inlet region 24 into two mutually separate, but coaxial and converging towards the narrowest point 25, shell-shaped inlet channels 24 'and 24 "(FIG. 2), whereby the inlet channel 24 'is always in communication with the pump chamber 17' and the inlet channel 24 "is always in communication with the pump chamber 17 " .
  • the passage cross section of the inlet channel 24 ' is significantly smaller than that of the inlet channel 24 ". This has the consequence that as soon as the extension 19 begins to penetrate into the depression 21 in the course of a switch-off stroke, the pressure increase in the pump chamber 17 'is currently greater than in the pump chamber 17 "because of the lower outflow possibility Area of the narrowest point 25 caused by the heating, high-pressure quenching gases - as far as they cannot escape through the outlet area 26 - at most only and also only temporarily pushed back into the pump chamber 17 " , while the switching arc is blown with fresh quenching gas from the Pump chamber 17 'is continued.
  • first nominal current contact 13 interacts with a second, stationary and also tubular, second nominal current contact 28.
  • a likewise metallic ring 30 is held via metallic struts 29, in which a second, likewise tubular contact piece 31 is mounted so as to be longitudinally displaceable. 1 that this second contact piece 31 practically closes the blowing nozzle 22 at its narrowest point 25 in the switched-on position and at the same time engages in the free end of the first contact piece 12.
  • a tension spring 32 is fastened (only shown schematically in FIG. 1), the other end of which is fastened at a fixed location 33 in the switch. The tension spring 32 tends to pull the second contact piece 31 upwards in FIG. 1.
  • each bearing eye 34 On the lateral surface of the second contact piece 31 there are a plurality of bearing eyes 34 distributed at uniform angular intervals.
  • a two-armed lever 35 On each bearing eye 34, one end of a two-armed lever 35 is articulated, which in turn can be pivoted about a pivot pin 36 in a bearing eye 37 formed in each case on a strut 29.
  • the other end of each of the two-armed levers 35 is articulated at 38 to one end of a rocker 39.
  • the other end of each rocker 39 is articulated on a bearing eye 40 which is anchored on the side of a shielding body 41 made of sheet metal facing away from the blowing nozzle.
  • This shielding body 41 has on its circumference an edge 42 bent towards the lever 35, which - at least in its advanced position according to FIGS. 2 and 3 - is in electrical contact with the contact surfaces of the second nominal current contact 28.
  • this shielding body 41 has in its center an approximately funnel-shaped passage 43 which, as can be seen in FIG. 1, is practically closed in the switched-on position by the area of the nozzle body 23 on the outlet side.
  • a shoulder 44 is also formed, which is used during the switch-on stroke, i.e. during the transition from the position shown in FIG. 3 to the position shown in FIG. 1, to cooperate with the end face 45 (FIG. 2, 3) of the shielding body 41 facing the blowing nozzle 22 and thus to move the shielding body 41 back along the second contact piece 31.
  • the shielding body 41 runs under the action of the tension spring 32 acting on the lever 35 of the second contact piece 31, and at the same time the second contact piece also pulls 31 from its position advanced in relation to the second rated current contact 28.
  • 2 shows the advanced end position of the shielding body 41 and, at the same time, the retracted end position of the second contact piece 31, which end position can be defined by stops, not shown in detail.
  • the ratio of the displacement path of the shielding body 41 and the (opposite) path of the second contact piece 31 depends on the “transmission ratio” of the levers 35.
  • the shielding body 41 which primarily has the function of making the electrical field at the end of the contact pieces 28 and 31 as uniform as possible, i.e. in the position acc. 2, a comparatively small displacement path can be sufficient.

Landscapes

  • Circuit Breakers (AREA)
  • Vehicle Body Suspensions (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Glass Compositions (AREA)
  • Control Of Combustion (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Coloring (AREA)

Claims (8)

1. Disjoncteur à gaz sous pression comprenant deux éléments de contact disposés coaxialement et pouvant être amenés en prise mutuelle, et en être dégagés, par mouvement axial, le premier élément de contact relié à une commande étant placé en position fixe en avant d'une buse de soufflage d'un gaz d'extinction reliée du côté admission à un volume de compression pouvant être mis sous pression lors d'une course de coupure, buse dans laquelle pénètre le second élément de contact en position de mise en circuit, le second élément de contact étant entouré par un corps de blindage qui peut être ramené, lors d'une course de mise en circuit, grâce à la buse de soufflage, à partir de sa position avancée en position de coupure, à l'encontre de l'action d'un ressort et le long du second élément de contact, caractérisé en ce que le corps de blindage (41) et le second élément de contact (31) sont accouplés l'un à l'autre de manière à se déplacer en sens inverses.
2. Disjonteur à gaz sous pression selon la revendication 1, caractérisé en ce que le corps de blindage (41) et le second élément de contact (31) sont accouplés l'un à l'autre par un dispositif à leviers (35,38).
3. Disjoncteur à gaz sous pression selon la revendication 2, caractérisé en ce que le rapport de transmission du dispositif à leviers (35, 38) est choisi de telle manière que le trajet de déplacement du corps de blindage (41) est plus faible que celui du second élément de contact (31
4. Disjoncteur à gaz sous pression selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit ressort (32) agit sur le second élément de contact (31).
5. Disjoncteur à gaz sous pression selon la revendication 4, caractérisé en ce que le ressort est un ressort de traction (32) qui agit sur l'extrémité du second élément de contact (31) distante du premier élément de contact (12).
6. Disjoncteur à gaz sous pression selon la revendication 2 ou la revendication 3, caractérisé en ce que le dispositif à leviers (35, 38) comprend au moins un levier (35) à deux bras monté sur un tourillon oscillant (36) à emplacement fixe, et qui est articulé à une extrémité au second élément de contact (31 ) et à l'autre extrémité, à une bielle oscillante (39) qui est à son tour articulée au corps de blindage (41
7. Disjoncteur à gaz sous pression selon la revendication 1, caractérisé en ce que l'ouverture centrale (43) du corps de blindage (41) a la forme d'un diffuseur divergent à l'éloignement de la buse de soufflage (22), dans lequel pénètre, en position de mise en circuit, la partie côté échappement de la buse de soufflage (22).
8. Disjoncteur à gaz sous pression selon la revendication 1, dans lequel aussi bien le premier que le second élément de contact (12 ou 31) sont chacun entourés par un contact de puissance (13 ou 28) disposés coaxialement, ces contacts de puissance moninale pouvant être amenés en coopération mutuelle, et être dégagés l'un de l'autre, caractérisé en ce que le corps de blindage (41) est en contact électrique glissant avec le contact de puissance nominale (28) qui entoure le second élément de contact (31).
EP80104262A 1979-09-25 1980-07-19 Interrupteur à gaz comprimé Expired EP0025833B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104262T ATE1400T1 (de) 1979-09-25 1980-07-19 Druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8626/79 1979-09-25
CH862679A CH644969A5 (de) 1979-09-25 1979-09-25 Druckgasschalter.

Publications (2)

Publication Number Publication Date
EP0025833A1 EP0025833A1 (fr) 1981-04-01
EP0025833B1 true EP0025833B1 (fr) 1982-07-28

Family

ID=4342812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104262A Expired EP0025833B1 (fr) 1979-09-25 1980-07-19 Interrupteur à gaz comprimé

Country Status (8)

Country Link
US (1) US4378477A (fr)
EP (1) EP0025833B1 (fr)
JP (1) JPS5654723A (fr)
AT (1) ATE1400T1 (fr)
CA (1) CA1140190A (fr)
CH (1) CH644969A5 (fr)
DE (1) DE3060707D1 (fr)
ZA (1) ZA805055B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613569A1 (de) * 1996-04-04 1997-10-09 Asea Brown Boveri Leistungsschalter
DE19644624C1 (de) * 1996-10-18 1998-03-26 Siemens Ag Hochspannungsdruckgasschalter
DE59802323D1 (de) 1997-01-17 2002-01-17 Siemens Ag Hochspannungs-leistungsschalter mit einer axial verschiebbaren feldelektrode
DE19738697C1 (de) * 1997-08-29 1998-11-26 Siemens Ag Hochspannungsleistungsschalter mit antreibbarem Gegenkontaktstück
DE19809088C1 (de) * 1998-02-25 1999-09-30 Siemens Ag Hochspannungsleistungsschalter mit einer Isolierstoffdüse
FR2915310B1 (fr) * 2007-04-17 2009-07-10 Areva T & D Sa Disjoncteur avec chambre de coupure a double mouvement et a structure inversee.
FR2953639B1 (fr) 2009-12-09 2012-01-13 Areva T & D Sas Disjoncteur a haute tension a ecran amovible pour l'amelioration du gradient de champ
DE102019214432B4 (de) * 2019-09-23 2024-02-08 Siemens Energy Global GmbH & Co. KG Baugruppe für einen Hochspannungs-Leistungsschalter und entsprechender Hochspannungs-Leistungsschalter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196008A (en) * 1937-07-06 1940-04-02 Gen Electric Shielded contact construction for circuit breakers
FR948434A (fr) * 1947-06-09 1949-08-01 Forges Ateliers Const Electr Disjoncteurs pneumatiques auto-compresseurs
DE2140284A1 (de) * 1971-08-06 1973-02-15 Siemens Ag Elektrischer druckgasschalter
CH554597A (de) * 1973-06-04 1974-09-30 Sprecher & Schuh Ag Druckgasschalter.
FR2273362A1 (en) * 1974-05-31 1975-12-26 Alsthom Cgee High voltage circuit breaker - has fixed contact with semi-mobile contact movable from mobile contact by spring
JPS5185473A (ja) * 1975-01-16 1976-07-27 Hitachi Ltd Patsufuaagatagasushadanki
JPS5238173A (en) * 1975-09-22 1977-03-24 Hitachi Ltd Buffer gas breaker
FR2327626A1 (fr) * 1975-10-09 1977-05-06 Alsthom Cgee Appareil de coupure electrique a soufflage d'arc
FR2344987A1 (fr) * 1976-03-15 1977-10-14 Merlin Gerin Sectionneur de mise a la terre pour poste blinde a haute tension
DE2831134C2 (de) * 1978-07-13 1980-08-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Metallgekapseltes, druckgasisoliertes Hochspannungsschaltgerät
JPS5559613A (en) * 1978-10-30 1980-05-06 Tokyo Shibaura Electric Co Gas breaker

Also Published As

Publication number Publication date
ATE1400T1 (de) 1982-08-15
EP0025833A1 (fr) 1981-04-01
US4378477A (en) 1983-03-29
CH644969A5 (de) 1984-08-31
CA1140190A (fr) 1983-01-25
DE3060707D1 (en) 1982-09-16
JPS5654723A (en) 1981-05-14
ZA805055B (en) 1981-08-26

Similar Documents

Publication Publication Date Title
DE69205069T2 (de) Mittelspannungslastschalter mit reduzierter Steuerenergie.
DE2209287C3 (de) Elektrischer Druckgasschalter
EP2686859B1 (fr) Disjoncteur haute tension à isolation dans le gaz
DE2039240B2 (de) Druckgasschalter mit einer Einrichtung zur Erzeugung eines Löschgasstromes
DE3247121C2 (fr)
EP0126929B2 (fr) Interrupteur à gaz comprimé
EP0146671A1 (fr) Interrupteur à gaz comprimé
EP0025833B1 (fr) Interrupteur à gaz comprimé
DE69303568T2 (de) Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression
DE3915700C2 (fr)
EP0296363B1 (fr) Interrupteur à écoulement de gaz d'extinction autoengendré
DE102005002139A1 (de) Dreistellungsschalter mit Kurvenscheibe
DE2319836C3 (de) Leistungsschalter
DE7614806U1 (de) Elektrischer Kompressionsschalter
EP0290950B1 (fr) Disjoncteur à gaz comprimé
DE2404721A1 (de) Elektrischer schalter
DE69112568T2 (de) Hochspannungslastschalter.
EP0070248B1 (fr) Sectionneur
EP0308626B1 (fr) Interrupteur à autosoufflage
DE3930548C2 (de) Druckgasschalter
CH640977A5 (de) Stromkreisunterbrecher.
DE2801979A1 (de) Trennschalter mit selbstbeblasung
EP0028039A1 (fr) Disjoncteur à gaz comprimé
DE69106436T2 (de) Mittelspannungsschalter.
DE4015179C2 (de) Druckgasschalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB NL

17P Request for examination filed

Effective date: 19810224

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE DE FR GB NL

REF Corresponds to:

Ref document number: 1400

Country of ref document: AT

Date of ref document: 19820815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3060707

Country of ref document: DE

Date of ref document: 19820916

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19831020

Year of fee payment: 2

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840628

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19840630

Year of fee payment: 5

REG Reference to a national code

Ref country code: FR

Ref legal event code: RC

REG Reference to a national code

Ref country code: FR

Ref legal event code: DA

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860627

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870731

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19880719

Ref country code: AT

Effective date: 19880719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19880731

BERE Be: lapsed

Owner name: SPRECHER & SCHUH A.G.

Effective date: 19880731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19890201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT