EP0897185A1 - Schalter mit Selbstbeblasung mit reduzierter Kompression - Google Patents

Schalter mit Selbstbeblasung mit reduzierter Kompression Download PDF

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Publication number
EP0897185A1
EP0897185A1 EP98402007A EP98402007A EP0897185A1 EP 0897185 A1 EP0897185 A1 EP 0897185A1 EP 98402007 A EP98402007 A EP 98402007A EP 98402007 A EP98402007 A EP 98402007A EP 0897185 A1 EP0897185 A1 EP 0897185A1
Authority
EP
European Patent Office
Prior art keywords
piston
circuit breaker
tube
diameter
contact assembly
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.)
Granted
Application number
EP98402007A
Other languages
English (en)
French (fr)
Other versions
EP0897185B1 (de
Inventor
Edmond Thuries
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 EP0897185A1 publication Critical patent/EP0897185A1/de
Application granted granted Critical
Publication of EP0897185B1 publication Critical patent/EP0897185B1/de
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
    • H01H33/905—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

Definitions

  • the present invention relates to a circuit breaker with self-blowing and reduced compression, especially at high tension.
  • circuit breaker self-blowing type comprising an envelope filled with a pressurized dielectric gas, two arcing contacts cooperating with each other, at least one of which is part of a movable contact assembly integral with a maneuver and adapted to be moved axially in the envelope during an opening operation between a closed position and an open position
  • the mobile contact assembly being constituted by a first tube delimiting with a second tube coaxial with the first tube, on either side of a crown connected to the first tube and in the second tube, a blowing chamber and a compression communicating with the blowing chamber and closed by a semi-mobile piston
  • this circuit breaker comprising first means for immobilizing the piston during a first part of the displacement of the contact assembly movable between closed position and position opening and second means for moving axially the piston with the movable contact assembly for one second part of this same displacement of the whole of mobile contact.
  • said means include pneumatic means cooperating with mechanical means.
  • the second mechanical means for axially moving the piston include a drive member integral with the assembly of mobile contact which causes a stop element linked to the piston during the second part of the displacement of the movable contact assembly, this stop element being arranged on the path of the drive member.
  • the first mechanical means to immobilize the piston include a spring disposed between a fixed member and a piston end wall and a fixed retainer cooperating with a stop wall of the piston. The way pneumatic is a means of vacuuming the space between the fixed retaining member and the abutment wall, this space being sealed.
  • the object of the invention is to provide a circuit breaker with reduced manufacturing compression simpler and therefore less expensive, which does not require actuation energy important.
  • the first means to immobilize the piston include a fixed retainer blocking a linked stopper arrangement to the piston and the second means for axially displacing the piston include a member for unlocking said arrangement stop, integral with the movable contact assembly.
  • the piston is consisting of an annular pressure element and a rear cylinder whose internal diameter is substantially equal to the outer diameter of the second tube over a length greater than said first displacement part.
  • the stop arrangement is consisting of at least one ball housed in a recess made in said rear cylinder and of larger diameter to the thickness of this cylinder.
  • the stop arrangement is consisting of at least one flexible blade secured to one of its ends of said rear cylinder and bearing to its other end a bead-shaped element housed in a recess made in said rear cylinder and thick radial greater than the thickness of this cylinder.
  • the retaining member consists of a fixed cylinder comprising at one of its ends a housing receiving said stopper arrangement.
  • the release member is constituted by a smaller diameter of the second tube in front of said length, i.e. on the contact side, the difference in diameter between this lower diameter and the diameter of said length being such that the stop member releases said housing for receiving the retaining member, when the mobile contact assembly has traversed said first displacement part.
  • Figure 1 is a longitudinal sectional view of a circuit breaker according to the invention in the closed position, according to a first alternative embodiment.
  • Figure 2 is a longitudinal sectional view of this same circuit breaker in open position.
  • Figure 3 is a longitudinal sectional view of a circuit breaker according to the invention in the closed position, according to a second alternative embodiment.
  • Figure 4 is a longitudinal sectional view of this same circuit breaker in open position.
  • the self-blowing type circuit breaker shown in Figures 1 to 4 includes an envelope 1 filled with a gas dielectric under pressure, two arcing contacts 2A, 4A cooperating with each other, at least one 4A being part of a movable contact assembly integral with a operation 3 and adapted to be moved axially in the envelope 1 during an opening maneuver between a closed position and an open position.
  • the mobile contact assembly consists of a first tube 6 delimiting with a second tube 7 coaxial with the first tube, on either side of a crown 8 connected to the first tube 6 and in the second tube 7, a blowing chamber 16 closed by a nozzle 12 and a compression chamber 9 communicating with the blowing chamber 16 and closed by a semi-mobile piston 11 equipped with at least one valve unidirectional 22 preventing gas from leaving the chamber compression 9.
  • the crown 8 is provided with orifices equipped with one-way valves 10 allowing passage gas from the compression chamber 9 to the blowing 16.
  • the first tube 6 slides on a fixed tube 3 via sliding contacts.
  • the circuit breaker also conventionally comprises permanent contacts 2, 4.
  • This circuit breaker includes first means for immobilize the piston during the first part of the displacement of the movable contact assembly between the closed position and open position and second means for axially moving the piston with the moving contact assembly for a second part of this same movement of the mobile contact assembly.
  • the first ways to immobilize the piston include a fixed retainer blocking an arrangement stop linked to the piston 11 and the second means for axially move the piston 11 include a release of said stop arrangement, integral with the assembly mobile contact.
  • the piston 11 consists of an annular element 11A pressure, constituting the face retaining the pressure, equipped with said 10A one-way valves and a cylinder 11B rear (i.e. on the side opposite the 2A contacts, 4A).
  • This rear cylinder 11B is of variable diameter on its length but essentially it's internal diameter substantially equal to the external diameter of part 7A of the second tube 7 of a length greater than said first displacement part.
  • the first ways to immobilize the piston therefore include a fixed retainer blocking a stop arrangement linked to the piston 11.
  • the stop arrangement consists of at least one ball 20 housed in a recess made in said cylinder rear 11B and of diameter greater than the thickness of this cylinder 11B.
  • the stop arrangement consists of at least one flexible blade 21 secured to one of its ends of said rear cylinder 11B and carrying at its other end a bead-shaped element 22 housed in a recess made in said rear cylinder 11B and of thickness radial greater than the thickness of this cylinder 11B.
  • the retaining member 23 is consisting of a fixed cylinder comprising at one of its ends a housing for receiving said arrangement of stop.
  • the second means for axially moving the piston 11 therefore comprise a member for unlocking said arrangement stop, integral with the movable contact assembly.
  • the release member is constituted by a smaller diameter of the second tube 7 outside the part 7A, in front of it, that is to say on the side of contacts.
  • the difference in diameter between this diameter bottom and the diameter of part 7A is such that the abutment member releases said receiving housing from the retainer 23, when the movable contact assembly has traversed said first part of displacement, that is to say the compression stroke.
  • Arc contacts 2A and 4A are in position fully fitted and the piston 11 is in position immobilized, its annular element 11A defining with the crown 8 a maximum compression volume 9.
  • the end of the rear cylinder 11B carrying the stop member, either the balls 20, or the blades 21 provided with their bead 22, is located on the part 7A of larger diameter and the balls 20 or beads 22, in contact on this part 7A, protrude their recess opposite the second tube 7 where they are housed in the receiving housing of the retaining member 23.
  • the stop element (balls 20 or beads 22) can then move to tube 7 of smaller diameter and by this displacement frees the receiving housing from the retainer 23 which then no longer blocks the piston 11 which given the pressure of the gas in the volume of compression moves with the moving contact assembly to reach the open position shown on the figures 2 or 4.
  • the layout can be improved, in particular in the case of the first ball variant 20, by placing in place of a compression spring in the volume of compression between crown 8 and piston 11, ensuring a unilateral stop towards the rear of the balls against the housing for receiving the retaining member 23 and avoiding possible jamming effects of the balls 20.

Landscapes

  • Circuit Breakers (AREA)
  • Push-Button Switches (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP98402007A 1997-08-11 1998-08-06 Schalter mit Selbstbeblasung mit reduzierter Kompression Expired - Lifetime EP0897185B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710260A FR2767221B1 (fr) 1997-08-11 1997-08-11 Disjoncteur a auto-soufflage et a compression reduite
FR9710260 1997-08-11

Publications (2)

Publication Number Publication Date
EP0897185A1 true EP0897185A1 (de) 1999-02-17
EP0897185B1 EP0897185B1 (de) 2004-11-24

Family

ID=9510224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402007A Expired - Lifetime EP0897185B1 (de) 1997-08-11 1998-08-06 Schalter mit Selbstbeblasung mit reduzierter Kompression

Country Status (5)

Country Link
US (1) US6018133A (de)
EP (1) EP0897185B1 (de)
AT (1) ATE283547T1 (de)
DE (1) DE69827711T2 (de)
FR (1) FR2767221B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045827A1 (de) 2007-10-03 2009-04-08 Areva T&D Sa Trennkammer eines Überlastschalters mit doppeltem Kompressionsvolumen
CN101930871A (zh) * 2010-08-25 2010-12-29 中国西电电气股份有限公司 一种高压开关设备用高载流能力灭弧室
US7964816B2 (en) 2005-11-03 2011-06-21 Areva T&T SA Interrupting chamber having two compression chambers

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807870B1 (fr) * 2000-04-18 2002-05-24 Alstom Interrupteur a soufflage d'arc, possedant une chambre de coupure a compression de gaz reduite et un mouvement alternatif du piston
EP1686602B2 (de) * 2005-02-01 2021-04-07 ABB Power Grids Switzerland AG Düsenbefestigung für elektrisches Schaltgerät
EP2249364A1 (de) 2009-05-07 2010-11-10 ABB Research Ltd. Verfahren zur Erzeugung von mechanisch komprimiertem Löschgas in einem gasisolierten Hochspannungs-Leistungsschalter und Vorrichtungen zur Durchführung des Verfahrens
KR101622422B1 (ko) * 2011-07-20 2016-05-18 엘에스산전 주식회사 가스 절연 차단기
DE102011083594A1 (de) * 2011-09-28 2013-03-28 Siemens Aktiengesellschaft Leistungsschalterunterbrechereinheit
US9305726B2 (en) * 2014-08-27 2016-04-05 Eaton Corporation Arc extinguishing contact assembly for a circuit breaker assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939317A (en) * 1973-09-18 1976-02-17 Siemens Aktiengesellschaft Electric compressed-gas circuit breaker
EP0061992A2 (de) * 1981-03-30 1982-10-06 Ernst Slamecka Hochspannungs-Blaskolbenschalter
EP0667633A1 (de) * 1994-01-25 1995-08-16 Gec Alsthom T & D Sa Selbstbeblasener Leistungsschalter mit pneumatisch festlegbarem halbbeweglichem Kolben

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459727A (en) * 1974-09-17 1976-12-31 Siemens Ag Electrical gas-blast circuit breaker
FR2745947B1 (fr) * 1996-03-11 1998-04-10 Gec Alsthom T & D Sa Disjoncteur a autocompression reduite
FR2756413B1 (fr) * 1996-11-28 1998-12-31 Gec Alsthom T & D Sa Disjoncteur a piston semi-mobile

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939317A (en) * 1973-09-18 1976-02-17 Siemens Aktiengesellschaft Electric compressed-gas circuit breaker
EP0061992A2 (de) * 1981-03-30 1982-10-06 Ernst Slamecka Hochspannungs-Blaskolbenschalter
EP0667633A1 (de) * 1994-01-25 1995-08-16 Gec Alsthom T & D Sa Selbstbeblasener Leistungsschalter mit pneumatisch festlegbarem halbbeweglichem Kolben

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7964816B2 (en) 2005-11-03 2011-06-21 Areva T&T SA Interrupting chamber having two compression chambers
EP2045827A1 (de) 2007-10-03 2009-04-08 Areva T&D Sa Trennkammer eines Überlastschalters mit doppeltem Kompressionsvolumen
US8044318B2 (en) 2007-10-03 2011-10-25 Areva T&D Sa Interrupting chamber of a circuit-breaker having two compression volumes
CN101930871A (zh) * 2010-08-25 2010-12-29 中国西电电气股份有限公司 一种高压开关设备用高载流能力灭弧室
CN101930871B (zh) * 2010-08-25 2012-11-21 中国西电电气股份有限公司 一种高压开关设备用高载流能力灭弧室

Also Published As

Publication number Publication date
FR2767221B1 (fr) 1999-09-10
US6018133A (en) 2000-01-25
DE69827711T2 (de) 2005-11-24
ATE283547T1 (de) 2004-12-15
DE69827711D1 (de) 2004-12-30
FR2767221A1 (fr) 1999-02-12
EP0897185B1 (de) 2004-11-24

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