EP0033355B1 - Disjoncteur à gaz comprimé - Google Patents

Disjoncteur à gaz comprimé Download PDF

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Publication number
EP0033355B1
EP0033355B1 EP80103499A EP80103499A EP0033355B1 EP 0033355 B1 EP0033355 B1 EP 0033355B1 EP 80103499 A EP80103499 A EP 80103499A EP 80103499 A EP80103499 A EP 80103499A EP 0033355 B1 EP0033355 B1 EP 0033355B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure accumulator
chamber
gas
blast circuit
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
EP80103499A
Other languages
German (de)
English (en)
Other versions
EP0033355A1 (fr
Inventor
Adrian W. Dr. Dipl.-Ing. Roth
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 AT80103499T priority Critical patent/ATE4354T1/de
Publication of EP0033355A1 publication Critical patent/EP0033355A1/fr
Application granted granted Critical
Publication of EP0033355B1 publication Critical patent/EP0033355B1/fr
Expired 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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow

Definitions

  • the present invention relates to a gas pressure switch with a fixed and a movable contact piece which can be brought into and out of engagement with one another, with a blowing nozzle which can be released by the movable contact piece in the course of the switch-off movement and which adjoins an arc chamber on the inlet side, the arc chamber having at least one Inlet pressure relief valve is connected to a pressure storage chamber (see, for example, DE-A-2 741 022).
  • a pressure gas switch of the type mentioned at the outset is also known from CH-AS 596 662.
  • the pressure accumulator chamber equipped with a spring-loaded free piston opens into a gap formed between the arc chamber and the blow nozzle.
  • This gas pressure switch is assembled from a relatively large number of parts and is economically disadvantageous.
  • the object of the invention is to provide a gas pressure switch which is economically advantageous and is suitable for the interruption of both small and large currents occurring in practice.
  • the pressure accumulator space connected to the arc space via at least one inlet pressure relief valve has at least one outlet check valve connecting the pressure accumulator space to the arc space and that at least one such pressure accumulator space is present.
  • the pressure storage spaces can be connected pneumatically in parallel or in series, the pressure storage space provided for a smaller pressure value in relation to the adjacent pressure storage space being closer to the arc space in a series connection.
  • the pressure storage spaces can also be connected both in series and in parallel.
  • the outlet check valves adjacent to the arc space are preferably tangential flap valves which cause the gas to flow in tangentially from the pressure storage space into the arc space.
  • the pressure storage spaces and the arc space can be equipped with reinforcement and cooling walls made of metal.
  • the pressure gas switch shown in Fig. 1 has a with an electronegative gas, for. B. with sulfur hexafluoride, filled, consisting of insulating material 1, which carries the fixed contact piece 2 connected to the one terminal of the switch.
  • a burning ring 3 made of graphite is placed in front of the fixed contact piece.
  • the movable contact piece 4 is pulled down during a switch-off movement by a drive, not shown, in the sliding contact 5 connected to the other connection of the switch.
  • the blowing nozzle 6 made of insulating material is fastened in the housing 1.
  • the blowing nozzle 6 is connected to the arc chamber 7 on the inlet side.
  • the pressure storage spaces 8 and 9 can be divided by radial partition walls, not shown in FIG. 1.
  • the segment-shaped partial spaces can be provided for different pressure values.
  • the inlet pressure relief valves of the individual segment-shaped subspaces have different response pressure values.
  • the pressure storage spaces for. B. existing cooling fins made of copper sheets.
  • the mode of operation of the compressed gas switch described with reference to the two figures is as follows: During a switch-off movement, the movable contact piece 4 is pulled downward in the arrangement shown in FIG. 1. Between the fixed contact piece 2, respectively. the erosion ring 3 and the movable contact piece 4, an arc arises after the contact separation. The resulting hot and strongly ionized gases flow into the arc chamber and cause a pressure increase there depending on the current to be interrupted.
  • the inlet pressure relief valves 10 have a lower response pressure than the opposite inlet pressure relief valves 11. Accordingly, up to a first current limit, no inlet pressure relief valve will respond. This current range is intended for the small currents.
  • a pressure can build up in the arc chamber 7, which is kept relatively small, which, after the blowing nozzle 6 has been released by the movable contact piece 4, causes a flow into the blow-out chamber 21 which is sufficient to extinguish the arc. If, in the event of an interruption, the current carried in the arc exceeds this first limit, the pressure in the arc space 7 also rises above the response value of the inlet pressure relief valves 10. In this case, the pressure which is decisive for blowing the arc becomes in the two spaces, in the arc space 7 and built up in the pressure storage chamber 9. The discharge of the pressure storage space 9 takes place practically without pressure drop via the outlet check valve 12 as soon as the opening of the blowing nozzle 6 is free.
  • the response pressure of the inlet pressure relief valves can be adapted to the preselected current values and thus an optimal extinguishing of the switching arc can be achieved in the entire current range.
  • the mode of operation of the compressed gas switch shown in FIG. 2 is similar to that described above.
  • the two pressure storage spaces 14 and 15 are pneumatically connected in series.
  • the inlet pressure relief valve 16 responds via a first current limit and also the inlet pressure relief valve 17 of the second pressure storage space 15 via a second current limit.
  • the discharge of the pressure storage spaces takes place via the outlet check valves 18 and 19 with practically no pressure drop with a free blowing nozzle opening.
  • the latter, adjacent to the arc chamber 7 outlet check valve 18 consists of several tangential flap valves arranged on the circumference, which cause an advantageous for the arc quenching tangential A flow of the gas.
  • the cooling of the hot gas flowing into the pressure storage spaces 14 and 15 is favored by the cast aluminum wall 22.
  • This Aluminiumgußwandung also allows the admission of higher pressure values in the pressure accumulator chambers 14, 15, and Lichtbo g enraum 7, which means leads to smaller switch sizes, and thus economic benefits.

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

Claims (7)

1. Disjoncteur à gaz comprimé comprenant une pièce de contact fixe (2) et une pièce de contact mobile (4) susceptibles d'être amenées en contact l'une avec l'autre, respectivement séparées l'une de l'autre, et une duse de soufflage (6) ouvrable par la pièce de contact mobile (4) lors du mouvement de disjonction, l'espace de formation de l'arc électrique (7) étant en communication par au moins une soupape de surpression, travaillant en soupape d'admission (10, 11; 16, 17) avec une chambre accumulatrice de pression (8, 9; 14, 15), caractérisée par le fait que la chambre accumulatrice de pression (8, 9; 14, 15), en liaison avec l'espace de foramtion de l'arc électrique (7) à travers au moins une soupape de surpression (10, 11; 16, 17), présente au moins une soupape de retenue, travaillant en soupape d'échappement (12, 13; 18, 19) et qu'il est prévu au moins une chambre accumulatrice de pression (8, 9; 14, 15).
2. Disjoncteur à ganz comprimé selon la revendication 1, caractérisé par le fait qu'il est prévu plusieurs chambres accumulatrices de pression (8, 9; 14, 15) pour au moins deux valeurs de pression différentes déterminées par les soupapes de surpression (10, 11; 16,17).
3. Disjoncteur à gaz comprimé selon la revendication 2, caractérisé par le fait que les chambres accumulatrices de pression (8, 9) sont branchées pneumatiquement en parallèle.
4. Disjoncteur à gaz comprimé selon la revendication 2, caractérisé par le fait que les chambres accumulatrices de pression (14, 15) sont branchées pneumatiquement en série, la chambre accumulatrice de pression (14) prévue pour la valeur de pression la plus faible étant plus proche de l'espace de formation de l'arc (7) que l'autre chambre accumulatrice de pression (15).
5. Disjoncteur à gaz comprimé selon les revendications 3 et 4, caractérisé par le fait que les chambres accumulatrices de pression sont branchées aussi bien en série qu'en parallèle.
6. Disjoncteur à gaz comprimé selon l'une des revendications précédentes, caractérisé par le fait que les soupapes de surpression, travaillant en soupape d'échappement (18), jouxtant l'espace de formation de l'arc électrique (7), sont des soupapes flottantes qui assurent un écoulement tangentiel du gaz de la chambre accumulatrice de pression (14) dans l'espace de formation de l'arc (7).
7. Disjoncteur à gaz comprimé selon l'une des revendication précédentes, caractérisé par le fait que les chambres accumulatrices de pression (14, 15) et l'espace de formation de l'arc électrique (7) sont équipés de parois de renforcement et de refroidissement en métal (22).
EP80103499A 1980-01-25 1980-06-23 Disjoncteur à gaz comprimé Expired EP0033355B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103499T ATE4354T1 (de) 1980-01-25 1980-06-23 Druckgasschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH597/80A CH649416A5 (de) 1980-01-25 1980-01-25 Druckgasschalter.
CH597/80 1980-01-25

Publications (2)

Publication Number Publication Date
EP0033355A1 EP0033355A1 (fr) 1981-08-12
EP0033355B1 true EP0033355B1 (fr) 1983-07-27

Family

ID=4190671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103499A Expired EP0033355B1 (fr) 1980-01-25 1980-06-23 Disjoncteur à gaz comprimé

Country Status (4)

Country Link
EP (1) EP0033355B1 (fr)
AT (1) ATE4354T1 (fr)
CH (1) CH649416A5 (fr)
DE (1) DE3064395D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425633A1 (de) * 1984-06-07 1985-12-12 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
DE3440212A1 (de) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
NO855379L (no) * 1985-02-27 1986-08-28 Bbc Brown Boveri & Cie Trykkgassbryter.
FR2651065B1 (fr) * 1989-08-18 1996-07-05 Alsthom Gec Disjoncteur a moyenne tension a autosoufflage
DE4412249A1 (de) * 1994-04-06 1995-10-12 Siemens Ag Elektrischer Hochspannungs-Leistungsschalter mit einem Heizraum und einem Kompressionsraum
DE19816509B4 (de) * 1998-04-14 2006-08-10 Abb Schweiz Ag Abbrandschaltanordnung
US8150543B2 (en) 2007-09-28 2012-04-03 Siemens Aktiengesellschaft Methods, apparatus and articles for an air jet loom

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE689851C (de) * 1934-07-31 1940-04-05 Frida Strauss Geb Ruppel Fluessigkeitsfreier Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
DE2507163A1 (de) * 1974-03-27 1975-10-09 Bbc Brown Boveri & Cie Schalter mit isoliergas
CH571763A5 (en) * 1974-07-24 1976-01-15 Sprecher & Schuh Ag Temperature-compensated piston-operated pressure gas switch - uses heat sink for switching cylinders to equalize temperature conditions
CH596662A5 (en) * 1976-06-24 1978-03-15 Sprecher & Schuh Ag Compressed gas circuit breaker
DE2741022A1 (de) * 1976-10-20 1978-05-03 Bbc Brown Boveri & Cie Gasschalter mit eigenloeschung
DE2801401A1 (de) * 1977-07-26 1979-02-08 Sprecher & Schuh Ag Druckgasschalter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588407A (en) * 1967-07-31 1971-06-28 Westinghouse Electric Corp Puffer piston gas blast circuit interrupter with insulating nozzle member and valve acting hollow contacts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE689851C (de) * 1934-07-31 1940-04-05 Frida Strauss Geb Ruppel Fluessigkeitsfreier Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
DE2507163A1 (de) * 1974-03-27 1975-10-09 Bbc Brown Boveri & Cie Schalter mit isoliergas
CH571763A5 (en) * 1974-07-24 1976-01-15 Sprecher & Schuh Ag Temperature-compensated piston-operated pressure gas switch - uses heat sink for switching cylinders to equalize temperature conditions
CH596662A5 (en) * 1976-06-24 1978-03-15 Sprecher & Schuh Ag Compressed gas circuit breaker
DE2741022A1 (de) * 1976-10-20 1978-05-03 Bbc Brown Boveri & Cie Gasschalter mit eigenloeschung
DE2801401A1 (de) * 1977-07-26 1979-02-08 Sprecher & Schuh Ag Druckgasschalter

Also Published As

Publication number Publication date
ATE4354T1 (de) 1983-08-15
EP0033355A1 (fr) 1981-08-12
CH649416A5 (de) 1985-05-15
DE3064395D1 (en) 1983-09-01

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