EP0664553B1 - Disjoncteur de puissance haute tension à chambre d'échauffement - Google Patents

Disjoncteur de puissance haute tension à chambre d'échauffement Download PDF

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Publication number
EP0664553B1
EP0664553B1 EP94250299A EP94250299A EP0664553B1 EP 0664553 B1 EP0664553 B1 EP 0664553B1 EP 94250299 A EP94250299 A EP 94250299A EP 94250299 A EP94250299 A EP 94250299A EP 0664553 B1 EP0664553 B1 EP 0664553B1
Authority
EP
European Patent Office
Prior art keywords
channel
heating chamber
bridging contact
arc
space
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
EP94250299A
Other languages
German (de)
English (en)
Other versions
EP0664553A1 (fr
Inventor
Hold Dr. Dienemann
Hartmut Dr. Knobloch
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0664553A1 publication Critical patent/EP0664553A1/fr
Application granted granted Critical
Publication of EP0664553B1 publication Critical patent/EP0664553B1/fr
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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches 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
    • H01H33/90—Switches 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
    • H01H33/901—Switches 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 making use of the energy of the arc or an auxiliary arc

Definitions

  • the invention relates to a high-voltage circuit breaker with two mutually coaxially opposed, hollow for the discharge of extinguishing gas switching contact pieces, between which an arc space is formed and with this coaxially drivable bridging contact piece and with the bridging contact piece in its switch-on position coaxially surrounding the first heating chamber for the extinguishing gas, which is connected to the arc chamber in the switched-off state by means of a first channel which is closed by the bridging contact piece in the switched-on state.
  • Such a high-voltage circuit breaker is known for example from DE-OS 41 03 119.
  • a switch is known with a plurality of heating rooms, some of which are connected to one another and which are successively connected to the arc room.
  • the arrangement of these boiler rooms axially one behind the other requires a large length of the switch and a long switching distance of the drivable contact piece.
  • the invention has for its object that in a high-voltage circuit breaker of the type mentioned To further improve extinguishing behavior while keeping the necessary drive energies as low as possible.
  • a second heating chamber is provided which is connected to the arc chamber in the switched-off state by means of a second channel closed by the bridging contact piece in the switched-on state, in that the second and the first channel are released by the bridging contact piece at different times during the switching-off process be that the bridging contact piece is arranged in the switched-on state substantially within the second heating space and that the first heating space surrounds the second heating space and is essentially limited by elements made of insulating material.
  • the channels can, for example, be formed particularly simply by the arc space and temporarily ring channels coaxially surrounding the bridging contact piece.
  • the invention can also be advantageously configured in that the first heating chamber is connected via a channel to a compression chamber in which the extinguishing gas is mechanically compressed.
  • extinguishing gas can be provided in a manner known per se by a mechanical compression device even in the case in which only a low-current arc is present, so that the heating of the extinguishing gas is not sufficient for a sufficient extinguishing gas flow to occur.
  • the mechanically compressed quenching gas can assist the quenching gas provided by high-pressure arc heating to extinguish the arc.
  • the figure shows a part of a high-voltage circuit breaker with two mutually opposite, hollow switching contact pieces 1, 2 which are bridged by the bridging contact piece 3 in the switched-on state.
  • the figure shows this switch-on state in the lower half-section and the switch-off state in the upper half-section.
  • An arc space 13 is formed between the switch contact pieces 1, 2, in which an arc burns temporarily between the switch contact pieces 1, 2 when the switch is switched off.
  • a first heating space 4 coaxially surrounds the switching contact pieces 1, 2 and the arc space 3. It is delimited by a first insulating element 5, a second insulating element 6 and a cylinder jacket 7 and has an annular channel 8 for the discharge of the quenching gas into the arc space 3.
  • an intermediate space 9 is formed, which the bridging contact piece 3 essentially fills in the switched-on state.
  • the bridging contact piece 3 releases this space 9.
  • the contact fingers 10 of the bridging contact piece 3 have expired from the switching contact piece 2 and the arcing contact 11 of the bridging contact piece 3 is at a distance from the switching contact piece 2, an arc is drawn there and at the same time an annular channel 20 is released, which connects the space 9 with the arcing space 3 .
  • the space 9 filled by the bridging contact piece 3 when it is switched on is thus available as a second heating space for the quenching gas heated by the arc.
  • the second insulating material element 6 is shaped so that the ring channel 8 between the first heating space and the arc space 3 is only released by the bridging contact piece 3 after the bridging contact piece 3 has expired from the switching contact piece 2, i. H. after the connecting channel 20 between the second heating chamber 9 and the arc chamber 3 has been at least partially released by the bridging contact piece 3.
  • the second insulating element 6 has a circumferential web 12, the height of which is designed such that the ring channel 8 is released by the bridging contact piece 3 at a suitable time.
  • a compression space 14 is also provided, in which the extinguishing gas is mechanically compressed.
  • a movable compression piston 15 is mechanically connected to the switch drive via a drive rod 16, which also drives the bridging contact piece 3.
  • the compression space 14 is arranged on the drive side of the switch, so that the compression space 14 is located on the side of the movable compression piston 15 facing the drive. From there, the compressed extinguishing gas is passed via an axially extending channel 17 to the first heating chamber 4, into which it is introduced via a check valve 18.
  • the switch construction as shown in the figure, achieves the following function:
  • the bridging contact piece 3 is driven so far that it runs from the switching contact piece 2. From this point on, depending on the current to be switched, an arc begins to burn between the arcing contact piece 11 and the switching contact piece 2, which is pulled through the bridging contact piece 3 and commutates on the switching contact piece 1. As soon as an annular channel 20 between the arcing contact piece 11 of the bridging contact piece 3 and the switching contact piece 2 is opened, the arc heats up the quenching gas located in the volume 9 and increases its pressure. During the current zero crossing of the current to be switched, the quenching gas located in the second heating chamber 9 can flow into the arc chamber 13 and extinguish the arc there.

Landscapes

  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Breakers (AREA)

Claims (4)

  1. Disjoncteur de puissance haute tension, comprenant deux plots de contact d'interruption (1, 2), disposés de manière coaxiale l'un en face de l'autre, réalisés creux pour l'évacuation du gaz d'extinction et entre lesquels est constitué un espace où jaillit un arc électrique (13), et comportant un plot de contact de court-circuit (3) pouvant être entraîné et entourant les plots de manière coaxiale, ainsi qu'un premier espace de chauffage (4) pour le gaz d'extinction, entourant de manière coaxiale le plot de contact de court-circuit (3) dans la position de fermeture de celui-ci, cet espace communiquant, dans la position d'ouverture, avec l'espace où jaillit l'arc électrique (3), au moyen d'un premier passage (8) , qui est fermé, dans la position de fermeture, par le plot de contact de court-circuit (3),
       caractérisé par le fait qu'il est prévu un deuxième espace de chauffage (9), qui communique avec l'espace où jaillit un arc électrique (3) , dans la position d'ouverture, au moyen d'un deuxième passage (20), qui est fermé, dans la position de fermeture, par le plot de contact de court-circuit (3), que le deuxième passage (20) et le premier passage (8) sont dégagés à des instants différents, lors du processus d'ouverture, par le plot de contact de court-circuit (3), que le plot de contact de court-circuit (3) est, dans la position de fermeture, situé sensiblement à l'intérieur du deuxième espace de chauffage (9) et que le premier espace de chauffage (4) entoure le deuxième espace de chauffage (9) et est sensiblement délimité par des éléments (5, 6, 7) consistant en un matériau isolant.
  2. Disjoncteur de puissance haute tension selon la revendication 1,
       caractérisé par le fait que c'est d'abord le deuxième passage (20) qui est dégagé par le plot de contact de court-circuit (3), et seulement ensuite le premier passage (8).
  3. Disjoncteur de puissance haute tension selon la revendication 1 ou l'une des suivantes,
       caractérisé par le fait qu'au moins l'un des plots de contact d'interruption (1, 2) peut également comporter une pièce rapportée (19) en un matériau isolant, sur son extrémité dirigée vers l'autre plot de contact d'interruption.
    4. Disjoncteur de puissance haute tension selon la revendication 1 ou l'une des suivantes,
       caractérisé par le fait que le premier espace de chauffage (4) communique, par l'intermédiaire d'un passage (17), avec un espace de compression (14), dans lequel le gaz d'extinction est comprimé mécaniquement.
EP94250299A 1994-01-21 1994-12-21 Disjoncteur de puissance haute tension à chambre d'échauffement Expired - Lifetime EP0664553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402123 1994-01-21
DE4402123A DE4402123C2 (de) 1994-01-21 1994-01-21 Hochspannungs-Leistungsschalter mit einem Heizraum

Publications (2)

Publication Number Publication Date
EP0664553A1 EP0664553A1 (fr) 1995-07-26
EP0664553B1 true EP0664553B1 (fr) 1997-05-14

Family

ID=6508651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250299A Expired - Lifetime EP0664553B1 (fr) 1994-01-21 1994-12-21 Disjoncteur de puissance haute tension à chambre d'échauffement

Country Status (3)

Country Link
EP (1) EP0664553B1 (fr)
AT (1) ATE153174T1 (fr)
DE (2) DE4402123C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520809U1 (de) * 1995-12-19 1996-02-15 Siemens AG, 80333 München Hochspannungs-Leistungsschalter mit einem Gasspeicherraum
DE19745550A1 (de) * 1997-10-10 1999-04-15 Siemens Ag Druckgasleistungsschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549863A (en) * 1976-04-27 1979-08-08 Reyrolle Parsons Ltd High voltage circuit interrupters
CH632609A5 (de) * 1977-03-24 1982-10-15 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschendem gas.
FR2520928A1 (fr) * 1982-02-04 1983-08-05 Alsthom Atlantique Disjoncteur a auto-soufflage pneumatique
DE4103119A1 (de) * 1991-01-31 1992-08-06 Siemens Ag Druckgasschalter

Also Published As

Publication number Publication date
EP0664553A1 (fr) 1995-07-26
DE4402123A1 (de) 1995-07-27
DE4402123C2 (de) 1996-02-22
DE59402748D1 (de) 1997-06-19
ATE153174T1 (de) 1997-05-15

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