WO2000034969A1 - Interrupteur de puissance electrique - Google Patents

Interrupteur de puissance electrique Download PDF

Info

Publication number
WO2000034969A1
WO2000034969A1 PCT/DE1999/003958 DE9903958W WO0034969A1 WO 2000034969 A1 WO2000034969 A1 WO 2000034969A1 DE 9903958 W DE9903958 W DE 9903958W WO 0034969 A1 WO0034969 A1 WO 0034969A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
chamber
electrical circuit
extinguishing gas
gas
Prior art date
Application number
PCT/DE1999/003958
Other languages
German (de)
English (en)
Inventor
Ingolf Reiher
Hold Dienemann
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP99964427A priority Critical patent/EP1141984A1/fr
Publication of WO2000034969A1 publication Critical patent/WO2000034969A1/fr

Links

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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/58—Silencers for suppressing noise of switch operation

Definitions

  • the invention relates to an electrical circuit breaker, in particular for high or medium voltage, with two switching contacts located opposite one another in an extinguishing gas-filled housing, between which an arc is drawn in the event of a switch, with the quenching gas heated by the arc on at least one outflow path from the
  • Switch contacts is carried away and a damping device is provided in the outflow path.
  • Such a circuit breaker is known for example from DE 197 07 320 Cl.
  • a second housing part is coupled to a first part of a switch housing containing an interrupter unit by means of an overpressure relief device.
  • the overpressure relief device which has a flying piston which, as a movable body, intercepts at least part of the pressure wave and then releases outflow openings for the extinguishing gas.
  • the present invention has for its object to provide a damping device for an electrical circuit breaker of the type mentioned that cools the extinguishing gas as effectively as possible, deionizes and absorbs the dynamic energy of the extinguishing gas at least in part.
  • the object is achieved in that the damping device has a chamber through which the extinguishing gas can flow, which is only partially filled with a plurality of damping bodies which can be moved by the extinguishing gas.
  • An advantageous embodiment of the invention provides that the chamber is delimited on at least one side by a passage opening for the chamber wall having the extinguishing gas.
  • the invention can also be implemented in that the chamber is delimited on two opposite sides by a chamber wall each having through openings for the extinguishing gas.
  • the chamber walls consist of a metal.
  • the chamber With such a construction of the chamber, it is structurally simple and allows an effective flow of the extinguishing gas.
  • the damping bodies can move freely without damaging the chamber walls.
  • the chamber walls themselves are mechanically and thermally so stably constructed so that they cannot be damaged by the hot extinguishing gas flow.
  • Another advantageous embodiment of the invention provides that the chamber is filled to less than 70 percent of its volume with damping bodies.
  • the invention can advantageously be designed in that the damping bodies are designed as balls.
  • damping bodies are designed as balls, they can be moved particularly well against one another and are particularly easy to produce. In addition, in the resting state, even in the densest packing of the balls, there is a finite one
  • the invention can also be advantageously designed in that the damping body consist of an insulating material, in particular a plastic.
  • the invention can be advantageously designed in that the damping body from one under action of hot extinguishing gas which gives off gas, especially polytetrafluoroethylene (PTFE;).
  • PTFE polytetrafluoroethylene
  • FIG. 1 shows schematically in a longitudinal section a breaker unit of a high-voltage circuit breaker with a damping device in a vertical position
  • FIG. 2 shows a breaker unit in a horizontal position schematically in a longitudinal section.
  • FIG. 1 shows an interrupter unit with a first arcing contact 1, a second pin-shaped arcing contact 2, a first drivable nominal current contact 3 with a second stationary nominal current contact 4.
  • the first arcing contact 1 is firmly connected to the first rated current contact 3 and to a drive (not shown) by means of the switching tube 5.
  • Arcing contact 2 protrudes into the tulip-shaped arcing contact 1 and there is galvanic contact between the arcing contacts and also between the nominal current contacts 3, 4.
  • the switching tube 5 is moved in the direction of arrow 6 by the drive, and first the nominal current contacts 3, 4, and then the arcing contacts 1, 2 are separated from one another.
  • the nozzle 7 is connected to the drivable contact pieces 1, 3 and has an annular channel 10 through which the quenching gas heated by means of the arc can flow out into a heating chamber 11, where it is initially stored.
  • the quenching gas stored in the heating chamber 11 flows back to the arc chamber 8 and blows the switching path there in order to prevent the arc 8 from re-igniting.
  • the extinguishing gas can flow out through the hollow first arcing contact piece 1 on the one hand and past the pin-shaped arcing contact piece 2 on the other hand.
  • the tubular nominal current contact piece 4 has
  • Pressure relief in its end region has openings 12 for the outflow of the extinguishing gas into the housing space of the housing 9.
  • the steaming device 13 which has a first chamber wall 14, a second chamber wall 15 and a chamber 16 delimited by these.
  • the chamber walls 14, 15 have passage openings 17 for the extinguishing gas, through which the extinguishing gas can first enter the chamber 16 and then exit it again.
  • the chamber 16 is filled with damping bodies 18 in the form of PTFE balls about half the volume.
  • the quenching gas can also be different, for example
  • the cooled and braked quenching gas can then escape through the passage openings of the second chamber wall 15 and then through the opening 12.
  • the PTFE bodies preferably have a diameter of 10 to 15 millimeters.
  • FIG. 2 A further embodiment of the invention is shown in FIG. 2 for a horizontally installed interrupter unit.
  • Such an arrangement of an interrupter unit can be found not only in the case of outdoor switches but also in metal-enclosed switchgear or. in dead-tank counters with metal housings.
  • Chamber wall 19 strikes and through the passage openings 23 and m the partial volume filled by vaporization bodies 24 occurs.
  • the steaming bodies 24 move chaotically, so that they are distributed approximately uniformly in the volume of the steaming device 21 and the subsequent stream of extinguishing gas flows uniformly between the steaming bodies 24.
  • the cooled and braked extinguishing gas stream can then flow out through an opening 25 in the tubular stationary second nominal current contact piece 26. Contamination of the inner wall of the housing, which can consist of a composite insulator or porcelain, or corrosion of other parts is thus prevented.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention concerne un interrupteur de puissance électrique, destiné notamment à des tensions élevées ou moyennes. Selon l'invention, une unité d'amortissement (13, 21) présentant un volume rempli seulement partiellement d'éléments d'amortissement (18, 24) est placée dans le flux de gaz d'extinction. Les éléments d'amortissement se déplacent de manière dissipative et refroidissent et freinent ainsi le flux de gaz d'extinction.
PCT/DE1999/003958 1998-12-10 1999-12-07 Interrupteur de puissance electrique WO2000034969A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99964427A EP1141984A1 (fr) 1998-12-10 1999-12-07 Interrupteur de puissance electrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858952.2 1998-12-10
DE1998158952 DE19858952C1 (de) 1998-12-10 1998-12-10 Elektrischer Leistungsschalter

Publications (1)

Publication Number Publication Date
WO2000034969A1 true WO2000034969A1 (fr) 2000-06-15

Family

ID=7891904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003958 WO2000034969A1 (fr) 1998-12-10 1999-12-07 Interrupteur de puissance electrique

Country Status (4)

Country Link
EP (1) EP1141984A1 (fr)
CN (1) CN1328691A (fr)
DE (1) DE19858952C1 (fr)
WO (1) WO2000034969A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313723B3 (de) * 2003-02-21 2004-06-09 Felten & Guilleaume Ag Baueinheit für die Aufnahme von Absorberelementen
US9237663B2 (en) * 2012-04-06 2016-01-12 Rockwell Automation Technologies, Inc. Methods and apparatus for mitigating arc flash incident energy in motor control devices
DE102013210136A1 (de) 2013-05-30 2014-12-04 Siemens Aktiengesellschaft Elektrisches Schaltgerät
CN107706038A (zh) * 2017-12-06 2018-02-16 广东电网有限责任公司江门供电局 一种六氟化硫断路器的静触头座

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984396A (en) * 1931-10-19 1934-12-18 Delle Atel Const Electr Gas cooling device for compressed gas electric circuit breaker silencers
DE19707320C1 (de) * 1997-02-12 1998-05-28 Siemens Ag Hochspannungs-Leistungsschalter mit einer Überdruckentlastungsvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984396A (en) * 1931-10-19 1934-12-18 Delle Atel Const Electr Gas cooling device for compressed gas electric circuit breaker silencers
DE19707320C1 (de) * 1997-02-12 1998-05-28 Siemens Ag Hochspannungs-Leistungsschalter mit einer Überdruckentlastungsvorrichtung

Also Published As

Publication number Publication date
CN1328691A (zh) 2001-12-26
DE19858952C1 (de) 2000-09-07
EP1141984A1 (fr) 2001-10-10

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