EP0664552A1 - Autopneumatischer Druckgasschalter mit Doppelbewegung - Google Patents

Autopneumatischer Druckgasschalter mit Doppelbewegung Download PDF

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Publication number
EP0664552A1
EP0664552A1 EP95400112A EP95400112A EP0664552A1 EP 0664552 A1 EP0664552 A1 EP 0664552A1 EP 95400112 A EP95400112 A EP 95400112A EP 95400112 A EP95400112 A EP 95400112A EP 0664552 A1 EP0664552 A1 EP 0664552A1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
tube
piston
groove
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.)
Withdrawn
Application number
EP95400112A
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English (en)
French (fr)
Inventor
Michel Perret
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0664552A1 publication Critical patent/EP0664552A1/de
Withdrawn legal-status Critical Current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
    • H01H33/905—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 the compression volume being formed by a movable cylinder and a semi-mobile piston
    • 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
    • H01H33/904—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 characterised by the transmission between operating mechanism and piston or movable contact

Definitions

  • the present invention relates to a self-blowing circuit breaker with double movement.
  • Document FR-2 683 383 discloses a circuit breaker comprising, in an envelope filled with dielectric gas, in particular SF6, a first arcing contact connected to a first socket, a second arcing contact having the same longitudinal axis as the first contact and connected to a second outlet and movable in a fixed cylinder and forming with a movable piston a compression chamber, the circuit breaker comprising means for driving the piston in a direction opposite to that of displacement of the second contact.
  • dielectric gas in particular SF6
  • a first arcing contact connected to a first socket
  • a second arcing contact having the same longitudinal axis as the first contact and connected to a second outlet and movable in a fixed cylinder and forming with a movable piston a compression chamber
  • the circuit breaker comprising means for driving the piston in a direction opposite to that of displacement of the second contact.
  • the gas in the compression chamber is compressed because the distance between the piston and the ring separating the compression chamber from the blowing chamber decreases.
  • the dielectric gas is compressed during the entire movement of the movable contact assembly between the closed position and the open position. Moving the movable contact assembly requires a certain amount of energy. The amount of energy required is greater the greater the gas in the compression chamber is compressed during the entire stroke of the movable contact assembly.
  • the object of the invention is to reduce the energy consumption of the circuit breaker during an opening operation and also to have the highest possible pressure in the separation of the arcing contacts in the expansion volume connected to the compression chamber.
  • these drive means act during a first part of the movement of the movable contact between the closed position and the open position and the circuit breaker comprises means for immobilizing the piston relative to the contact mobile during a second part of this same movement of the mobile contact.
  • the drive means consist of at least two links, one end of which is articulated on a guide element and the other end of which is articulated for the first link on the piston and for the second link.
  • the guide element moving freely in a first groove perpendicular to the longitudinal axis of the second contact and arranged on a fixed part and the two links being arranged on either side of a passing vertical plane by the longitudinal axis of the first groove.
  • the immobilization means consist of said rods and said guide element moving in at least a second groove parallel to the longitudinal axis of the second contact connected to the first groove.
  • said fixed part is the fixed cylinder.
  • FIG. 5 is a sectional view along V-V of FIG. 4.
  • Figure 6 is a sectional view along VI-VI of Figure 1.
  • a cutout chamber with a horizontal longitudinal axis will be described, it being understood that a high-voltage circuit breaker, may, for each phase, have several cutoff chambers of the type which will be described and with a vertical longitudinal axis or horizontal.
  • the same references designate identical elements.
  • the reference 1 designates an insulating envelope, for example made of porcelain, or metallic in the case of a circuit breaker of the shielded type, filled with a gas with good dielectric properties, for example sulfur hexafluoride under pressure from a few bars.
  • a gas with good dielectric properties for example sulfur hexafluoride under pressure from a few bars.
  • the circuit breaker includes a fixed assembly and a movable contact assembly.
  • the fixed assembly comprises an arcing contact 2, consisting of a metal tube, the end 2A of which is made of a material resistant to the effects of the arcing, for example an alloy based on tungsten.
  • the fixed assembly also includes a fixed permanent contact 5 consisting of fingers. The fixed arcing contact and the permanent contact are electrically connected to a first socket, not shown.
  • the movable contact assembly comprises an operating part passing through the interrupting chamber in a sealed manner and connected to a mechanism not shown.
  • a metal assembly comprising two coaxial tubes 4 and 13 is connected to this part or operating rod, the tube 13 having a diameter greater than the tube 4.
  • the two tubes 4, 13 are connected together by a metal crown 15. These tubes and this ring are preferably made in one piece from machining.
  • the tube 4 constitutes the movable arcing contact and is actuated axially by the operating rod in a known manner. Its end 4A is made of a material resistant to the effects of the arc and cooperates with the contact 2.
  • the tube 13 has an end 13A, of reduced diameter and carrying a blowing nozzle 14 made of insulating material.
  • the tubular portion 13A constitutes the permanent movable contact of the circuit breaker and cooperates, when the circuit breaker is in the closed position with the fingers 5 as shown in FIG. 1.
  • the crown 15, the tubes 4 and 13 and a piston 7 define a compression chamber 3 separated from the blowing chamber 16 by the crown 15.
  • the piston 7 slides axially between the tubes 4 and 13 in a sealed manner.
  • the piston 7 comprises a tube 17 coaxial with the tubes 4 and 13 and sliding on the tube 4 inside a fixed cylinder 6 coaxial with the previous ones.
  • the cylinder 6 is electrically connected to a second outlet not shown.
  • the cylinder 6 also supports a permanent contact formed by fingers 18 in electrical contact with the tube 13.
  • the piston 7 is equipped with a unidirectional valve 7A allowing gas to flow from the interior of the interrupting chamber to the compression chamber 3.
  • the crown 15 is equipped with a single orifice 15A.
  • the circuit breaker comprises means for driving the piston 7 in a direction opposite to that of the displacement of the second contact 4 acting during a first part of the displacement of the movable contact 4 between the closed position and the open position and means of immobilization of the piston 7 relative to the movable contact 4 during a second part of this same movement of the movable contact 4.
  • These drive means consist of at least two links 8, 9 one end of which is articulated on a guide element 10 and the other end of which is articulated for the first link 8 on the tube 17 of the piston 7 and for the second link 9 on the movable contact 4.
  • This guide element 10 moves freely in at least a first groove 11 perpendicular to the longitudinal axis of the movable contact 4, vertical in the case shown, arranged on a fixed part 6A forming part of the fixed cylinder 6 and the two links 8, 9 are arranged on both sides other of a vertical plane passing through the longitudinal axis of this first groove 11.
  • the immobilization means consist of said links 8, 9 and of said guide element 10 moving in at least one second groove 12 parallel to the longitudinal axis of the movable contact, horizontal in the case shown, connected to the first groove 11.
  • FIGS. 5 and 6 These means are shown in more detail in FIGS. 5 and 6.
  • the links 9, 9 ′ are at their other end pivoting on another axis 20 passing through the tube 4 constituting the movable contact.
  • the links 8, 8 ′ are at their other pivoting end on lugs 21, 21 ′ connected to the tube 17 of the piston 7.
  • FIG. 1 the circuit breaker is shown in the closed position.
  • the movable contact 2 is pushed by the operating rod in its extreme position to the left.
  • the rollers 10, 10 ' are in their highest highest position in the vertical groove 11 (in the case of a general horizontal positioning of the circuit breaker) and in this position the piston 7 is in its most remote from the crown 15, the volume of the compression chamber 3 being maximum.
  • This double movement is particularly advantageous in order to obtain a high blowing pressure and to avoid re-priming, in circuit breakers with low dielectric gas pressure, for example on networks operating under temperatures which may be very low.
  • the arc forms and causes a strong pressure rise in the blowing and expansion chamber 16 where the pressure is already high and the arc is thus easily blown.
  • the rollers 10, 10 'have then reached their lowest position at the entrance to the horizontal groove 12.
  • the dimensions are chosen so that at this moment the piston 7 abuts against the crown 15 and the volume of the compression chamber 3 is substantially zero.
  • it can be different and a non-zero "dead" volume of the compression chamber 3 can be provided.
  • the piston 7 and the contact 4 have, thanks to this arrangement, the same speed of movement and it is therefore unnecessary to provide a one-way valve in the orifice 15A of the crown 15.
  • the circuit breaker is closed again by the same movements in the opposite direction.
EP95400112A 1994-01-25 1995-01-19 Autopneumatischer Druckgasschalter mit Doppelbewegung Withdrawn EP0664552A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400764A FR2715500B1 (fr) 1994-01-25 1994-01-25 Disjoncteur à auto-soufflage et à double mouvement.
FR9400764 1994-01-25

Publications (1)

Publication Number Publication Date
EP0664552A1 true EP0664552A1 (de) 1995-07-26

Family

ID=9459358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400112A Withdrawn EP0664552A1 (de) 1994-01-25 1995-01-19 Autopneumatischer Druckgasschalter mit Doppelbewegung

Country Status (3)

Country Link
US (1) US5587571A (de)
EP (1) EP0664552A1 (de)
FR (1) FR2715500B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0766278A2 (de) * 1995-09-30 1997-04-02 Asea Brown Boveri Ag Leistungsschalter
EP0780859A1 (de) * 1995-12-21 1997-06-25 Gec Alsthom T&D Ag Druckgasschalter mit einer Ausschalt-Bremsanordnung
EP0785562A1 (de) * 1996-01-22 1997-07-23 Gec Alsthom T & D Sa Lastschalter mit Kontakten mit Doppelbewegung
FR2756413A1 (fr) * 1996-11-28 1998-05-29 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
WO2022204996A1 (zh) * 2021-03-30 2022-10-06 华为数字能源技术有限公司 断路器和供电系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006164673A (ja) * 2004-12-06 2006-06-22 Hitachi Ltd パッファ形ガス遮断器の電流遮断方法およびそれに用いるパッファ形ガス遮断器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354625A1 (fr) * 1976-06-10 1978-01-06 Merlin Gerin Interrupteur a autosoufflage
DE3127678A1 (de) * 1981-07-14 1983-02-10 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungs-leistungsschalter
CH667943A5 (en) * 1985-07-16 1988-11-15 Sprecher Energie Ag Pressurised gas switch mechanism - has non-linear drive coupling between drive rod and piston-cylinder device for arc extinction gas jet
DE3942489A1 (de) * 1989-12-22 1991-06-27 Licentia Gmbh Druckgasschalter mit selbsterzeugter loeschgasstroemung
FR2683383A1 (fr) * 1991-11-04 1993-05-07 Alsthom Gec Disjoncteur a haute ou moyenne tension a triple mouvement.
EP0591039A1 (de) * 1992-09-29 1994-04-06 Gec Alsthom T Et D Sa Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH590552A5 (de) * 1975-09-26 1977-08-15 Sprecher & Schuh Ag

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354625A1 (fr) * 1976-06-10 1978-01-06 Merlin Gerin Interrupteur a autosoufflage
DE3127678A1 (de) * 1981-07-14 1983-02-10 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungs-leistungsschalter
CH667943A5 (en) * 1985-07-16 1988-11-15 Sprecher Energie Ag Pressurised gas switch mechanism - has non-linear drive coupling between drive rod and piston-cylinder device for arc extinction gas jet
DE3942489A1 (de) * 1989-12-22 1991-06-27 Licentia Gmbh Druckgasschalter mit selbsterzeugter loeschgasstroemung
FR2683383A1 (fr) * 1991-11-04 1993-05-07 Alsthom Gec Disjoncteur a haute ou moyenne tension a triple mouvement.
EP0540971A1 (de) * 1991-11-04 1993-05-12 Gec Alsthom Sa Hoch- oder Mittelspannungsschalter mit Dreifachbewegung
EP0591039A1 (de) * 1992-09-29 1994-04-06 Gec Alsthom T Et D Sa Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0766278A3 (de) * 1995-09-30 1998-11-04 Asea Brown Boveri Ag Leistungsschalter
EP0766278A2 (de) * 1995-09-30 1997-04-02 Asea Brown Boveri Ag Leistungsschalter
US5767471A (en) * 1995-12-21 1998-06-16 Gec Alsthom T & D Ag Pressurized gas circuit-breaker
EP0780859A1 (de) * 1995-12-21 1997-06-25 Gec Alsthom T&D Ag Druckgasschalter mit einer Ausschalt-Bremsanordnung
FR2743936A1 (fr) * 1996-01-22 1997-07-25 Gec Alsthom T & D Sa Disjonteur a double mouvement des contacts
EP0785562A1 (de) * 1996-01-22 1997-07-23 Gec Alsthom T & D Sa Lastschalter mit Kontakten mit Doppelbewegung
EP0845796A1 (de) * 1996-11-28 1998-06-03 Gec Alsthom T & D Sa Leistungsschalter mit halbbeweglischem Kolben
FR2756413A1 (fr) * 1996-11-28 1998-05-29 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile
US5859399A (en) * 1996-11-28 1999-01-12 Gec Alsthom T & D Sa Circuit breaker having semi-moving piston
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
EP0895262A1 (de) * 1997-07-24 1999-02-03 Gec Alsthom T & D Sa Gasschalter mit komprimierbaren Volum und Wärmeausdehnung
US5939692A (en) * 1997-07-24 1999-08-17 Gec Alsthom T & D Sa Gas-filled interrupter with compressible thermal expansion chamber
WO2022204996A1 (zh) * 2021-03-30 2022-10-06 华为数字能源技术有限公司 断路器和供电系统

Also Published As

Publication number Publication date
FR2715500B1 (fr) 1996-02-16
US5587571A (en) 1996-12-24
FR2715500A1 (fr) 1995-07-28

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