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EP0049375B1 - Interrupteur autopneumatique à SF6 comprimé à commande pneumatique - Google Patents

Interrupteur autopneumatique à SF6 comprimé à commande pneumatique Download PDF

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Publication number
EP0049375B1
EP0049375B1 EP19810106983 EP81106983A EP0049375B1 EP 0049375 B1 EP0049375 B1 EP 0049375B1 EP 19810106983 EP19810106983 EP 19810106983 EP 81106983 A EP81106983 A EP 81106983A EP 0049375 B1 EP0049375 B1 EP 0049375B1
Authority
EP
European Patent Office
Prior art keywords
damping
piston
cylinder
pressure
stroke
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
EP19810106983
Other languages
German (de)
English (en)
Other versions
EP0049375A1 (fr
Inventor
Karl Dr.Ing. Kriechbaum
Hans-Erich Ing.Grad. Zyriax
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0049375A1 publication Critical patent/EP0049375A1/fr
Application granted granted Critical
Publication of EP0049375B1 publication Critical patent/EP0049375B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Definitions

  • the invention relates to an autopneumatic SF 6 pressure gas switch according to the first part of claim 1.
  • a pressure drive for electrical switches is already known, in which the moving masses are braked by means of air damping before reaching the end positions, with a piston guided in a cylinder for switching on the one and switching off the one compressed air is applied to the other side and the cylinder space located on the opposite side serves as a damping space.
  • the piston is connected to a continuously hollow piston rod having at least two transverse holes, which slidably comprises a fixed mandrel provided with recesses, such that the respective damping space is at least partially filled with compressed air during part of the piston movement.
  • This known damping arrangement is disadvantageous in terms of structure and mode of operation because it withdraws energy from the system at an early stage, ie the movement of the contact piece is restricted and energy is withdrawn from the SF s cylinder, which is not available for switching off.
  • the known switch is relatively complex in terms of the structure and mode of operation of its damping device.
  • the invention is therefore based on the object of providing an autopneumatic SF 6 gas pressure switch of the type mentioned at the outset, which is simple in construction and in which energy from the SF s compression cylinder is not removed for damping.
  • FIG. 1 shows an autopneumatic high-voltage circuit breaker with two switching chambers 1, 2, each of which contains an unspecified switching contact system in connection with devices for blowing the arc and for generating the necessary blowing pressure.
  • the two switching chambers rest on a pole column consisting of two supports 3, in the interior of which there is a switching rod 4, which is connected on the head side via deflection elements 5 to the moving contact pieces of the contact system and on the foot side with a pressure piston 7 of a pneumatic drive which is slidably arranged in a compressed air cylinder 6 .
  • the compressed air cylinder 6 is fixedly connected to a base frame or base frame 8.
  • the switch shown in FIG. 1 is in the “off” position (bottom dead center of the compressed air piston 7).
  • the movement of the compressed air piston or the shift rod 4 firmly connected to it must be braked or damped.
  • the invention provides a pneumatic damping device.
  • FIG. 2 An embodiment of such a pneumatic damping device 9 is shown in FIG. 2.
  • the damping device 9 shown consists of an upward, ie. H. to the switching chambers 1, 2 open damping cylinder 10, which is arranged with its closed side 10a at the foot of the support 3 forming the pole column.
  • the damping cylinder 10 is arranged coaxially to the support 3 and the drive rod 4, the latter being passed through the damping cylinder.
  • a damping piston 11, which cooperates with the damping cylinder 10, is firmly connected to the shift rod 4.
  • the height of the damping cylinder is approximately one third of the stroke of the compressed air piston 7.
  • the damping device 9 can expediently be used with a further damping (not shown) arranged in the drive cylinder 6.
  • This further damping advantageously consists of a damping ring made of polymer material, in particular polyurethane, which acts as a stop for the compressed air piston 7 in the lower reversing area. Since the damping properties of the further damping z. B. become worse at low temperatures and eventually go to zero, but the damping device 9 is largely independent of temperature, it has z. B. in the case of low temperatures.

Landscapes

  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Circuit Breakers (AREA)

Claims (4)

1. Disjoncteur autopneumatique à gaz comprimé et SF6, avec une commande pneumatique comprenant un cylindre et un piston à air comprimé (6, 7), avec une tige de commutation (4) reliée au piston à air comprimé (7) et guidée dans une colonne polaire (3) contenant du SF6 gazeux, et avec un dispositif (9) amortissant le mouvement de commutation du piston à air comprimé (7) et des pièces dont il est solidaire, le dispositif amortisseur (9) étant logé dans la colonne polaire (3) et comportant un vérin (10, 11), ledit disjoncteur étant caractérisé en ce que le cylindre amortisseur (10) est ouvert d'un côté et présente une longueur inférieure à la course du piston à air comprimé (7), de sorte que la course utile entre le piston amortisseur (11) et le cylindre amortisseur (10) est inférieure à la course du piston à air comprimé (7).
2. Disjoncteur autopneumatique à gaz comprimé et SF6 selon revendication 1, caractérisé en ce que la course utile entre le piston amortisseur (11) et le cylindre amortisseur (10) est égale au tiers environ de la course du piston à air comprimé (7).
3. Disjoncteur autopneumatique à air comprimé et SF6 selon une des revendications 1 ou 2, caractérisé en ce que le vérin amortisseur (10, 11) est monté coaxialement à la tige de commutation (4).
4. Disjoncteur autopneumatique à gaz comprimé et SF6 selon une quelconque des revendications 1 à 3, caractérisé en ce que le vérin amortisseur (10, 11) est fixé au pied de ia colonne polaire (3) pour le freinage du mouvement d'ouverture.
EP19810106983 1980-10-06 1981-09-05 Interrupteur autopneumatique à SF6 comprimé à commande pneumatique Expired EP0049375B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803037740 DE3037740C2 (de) 1980-10-06 1980-10-06 Autopneumatischer SF↓6↓-Druckgasschalter mit pneumatischem Antrieb
DE3037740 1980-10-06

Publications (2)

Publication Number Publication Date
EP0049375A1 EP0049375A1 (fr) 1982-04-14
EP0049375B1 true EP0049375B1 (fr) 1984-06-13

Family

ID=6113749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810106983 Expired EP0049375B1 (fr) 1980-10-06 1981-09-05 Interrupteur autopneumatique à SF6 comprimé à commande pneumatique

Country Status (3)

Country Link
EP (1) EP0049375B1 (fr)
JP (1) JPS5792725A (fr)
DE (1) DE3037740C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445359A1 (de) * 1984-12-12 1986-06-12 Brown, Boveri & Cie Ag, 6800 Mannheim Mit einer pneumatischen daempfungsvorrichtung ausgestatteter mechanischer kraftspeicherantrieb fuer einen leistungsschalter einer mittelspannungs- oder hochspannungsschaltanlage
DE4023237A1 (de) * 1990-04-14 1991-10-17 Sachsenwerk Ag Schalteinrichtung mit einem lastschalter oder lasttrennschalter und einer sicherung
DE4402087C2 (de) * 1994-01-25 1995-11-16 Reinhausen Maschf Scheubeck Dämpfungseinrichtung für linear betätigte Schalter, vorzugsweise Stufenschalter von Stufentransformatoren
ATE216531T1 (de) * 1995-12-21 2002-05-15 Alstom Ag Druckgasschalter mit einer ausschalt- bremsanordnung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1178324A (en) * 1915-10-04 1916-04-04 Charles J Kyle Rail-anchor.
BE363623A (fr) * 1928-10-02
DE596874C (de) * 1928-10-03 1934-05-11 Sigwart Ruppel Dipl Ing Steuerung fuer Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
DE1205607B (de) * 1961-05-02 1965-11-25 Licentia Gmbh In beiden Schaltrichtungen wirkender pneumatischer Antrieb fuer Schaltkontakte eines Hochspannungsschalters, insbesondere Druckluftschalters
BE634063A (fr) * 1962-06-27
CH456730A (de) * 1967-05-31 1968-07-31 Bbc Brown Boveri & Cie Dämpfungseinrichtung zum Abbremsen der beim Schalten bewegten Massen eines Schaltgerätes
SE346050B (fr) * 1970-10-02 1972-06-19 Asea Ab
FR2462012A1 (fr) * 1979-07-16 1981-02-06 Alsthom Cgee Dispositif de manoeuvre d'un disjoncteur

Also Published As

Publication number Publication date
DE3037740C2 (de) 1982-08-26
JPS5792725A (en) 1982-06-09
DE3037740A1 (de) 1982-04-08
EP0049375A1 (fr) 1982-04-14

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