EP0785562A1 - Lastschalter mit Kontakten mit Doppelbewegung - Google Patents

Lastschalter mit Kontakten mit Doppelbewegung Download PDF

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Publication number
EP0785562A1
EP0785562A1 EP97400084A EP97400084A EP0785562A1 EP 0785562 A1 EP0785562 A1 EP 0785562A1 EP 97400084 A EP97400084 A EP 97400084A EP 97400084 A EP97400084 A EP 97400084A EP 0785562 A1 EP0785562 A1 EP 0785562A1
Authority
EP
European Patent Office
Prior art keywords
tube
piston
contacts
semi
mobile
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
EP97400084A
Other languages
English (en)
French (fr)
Other versions
EP0785562B1 (de
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 EP0785562A1 publication Critical patent/EP0785562A1/de
Application granted granted Critical
Publication of EP0785562B1 publication Critical patent/EP0785562B1/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
    • H01H33/904—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
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions

Definitions

  • the present invention relates to a high voltage circuit breaker with double movement of the contacts.
  • An object of the present invention is to design a circuit breaker with double movement of the contacts not comprising crankshaft, so that the internal diameter of the breaking chamber is reduced as much as possible.
  • Another object of the invention is to provide a circuit breaker with double movement of the contacts, in which the operating energy, upon opening, is as reduced as possible.
  • circuit breaker of the invention which relates to a high voltage circuit breaker with double movement of the contacts, comprising, for each pole, an insulating envelope filled with insulating gas and containing a mobile assembly comprising permanent contacts , arcing contacts, and a blowing cylinder cooperating with a fixed blowing piston, and a semi-mobile assembly comprising permanent contacts and arcing contacts, characterized in that the movement of the semi-mobile assembly is obtained by a vacuum system comprising a vacuum cylinder inside which can move a first piston secured to the mobile assembly and a second piston connected to the semi-mobile assembly.
  • the vacuum cylinder is constituted by a fixed cylindrical portion arranged coaxially and around a tube constituting the semi-mobile permanent contact.
  • the second piston comprises a tubular rod internally containing at least one rack element cooperating with at least one fixed pinion itself cooperating with a rack element fixed internally to said tube constituting the semi-mobile permanent contact.
  • the second piston comprises a rod integral with said tube constituting the semi-movable permanent contact and provided at its end with a shoulder serving to support a first end of a spring whose second end comes in support on a stop integral with said cylindrical portion forming with said tube said vacuum cylinder.
  • circuit breakers of the open type that is to say intended to be placed outdoors.
  • These circuit breakers have a ceramic or synthetic material casing.
  • circuit breakers of the type with a metal shell to the ground also known under the terminology of shielded circuit breakers.
  • the reference 1 designates an envelope, partially shown, for example made of ceramic. This envelope is sealed and closed by metal flanges not shown and carrying sockets not shown.
  • the envelope is filled with an insulating gas, for example sulfur hexafluoride SF6, under a pressure of a few bars.
  • the set of semi-mobile contacts includes a contact for the passage of permanent current, consisting of a metal tube 2; this tube is guided in a bore of a fixed metal part 3 electrically connected to the first socket not shown.
  • Sliding contacts 4 for example of the "accordion" type, ensure the passage of current between the part 3 and the tube 2.
  • the tube 2 is integral with a tube 6, disposed internally and coaxially with the tube 2, and constituting the arcing contact of the set of semi-mobile contacts.
  • the tube 2 and the tube 6 constitute a single piece from the foundry and are connected by a ring 7 provided with holes 7A for the passage of gas.
  • the end of the tube 6 is provided with a tip 6A made of an alloy resistant to the effects of the electric arc.
  • the movable assembly comprises a tube 9 extended at one end by a ring of contact fingers 10; the tube 9 slides in a bore of a fixed metal part 12 electrically connected to the second outlet not shown.
  • Sliding contacts 14, for example of the "accordion" type, ensure the passage of current between the part 12 and the tube 9.
  • the tube 9 is integral with a tube 16, disposed internally and coaxially with the tube 9, and constituting the arcing contact of the set of movable contacts.
  • the tube 9 and the tube 16 are connected by a ring 17 provided with holes 17A for the passage of gas.
  • the end of the tube 16 is provided with a tip 16A made of an alloy resistant to the effects of the electric arc.
  • the tube 16 passes through a fixed blowing piston 18, of annular section, placed in the movable cylinder of annular section constituted by the tubes 9 and 16.
  • the tubes 9 and 16, the piston 18 and the crown 17 define a blowing volume; the compressed gas during a tripping operation is pushed towards the end of the movable arcing contact 16A and passes through a blowing nozzle 20 made of insulating material.
  • the tube 16 is connected to the end of an operating rod (not shown) actuated by a control (not shown).
  • pistons 23 and 26 are provided with seals, not referenced, to create a seal with the cylinder in which they slide.
  • Interlocking is achieved by moving the moving assembly, under the action of the control, to the left of the figures. It is possible to provide, in the piston 26, a unidirectional valve 26A which makes it possible to avoid an overpressure in the volume comprised between the pistons 23 and 26.
  • the system performing the double movement which has just been described is economical, can be placed on existing circuit breakers and occupies a small volume since its diameter does not exceed that of the metal parts 3 and 12.
  • Figs. 4 to 6 relate to an alternative embodiment in which the movement of the movable assembly in the opposite direction to that of the movable assembly only occurs after a phase of compression of the blowing gas; this precompression of the gas ensures an increase in the breaking capacity of the circuit breaker.
  • the elements common to Figs. 1 to 3 and in Figs. 4 to 6 received the same reference numbers.
  • the piston rod 26 is modified.
  • This rod, referenced 40 is a tubular portion secured to the tube 2 and includes a terminal shoulder 40A.
  • a first end of a spring 42 bears against the shoulder 40A; the second end of the spring 42 comes to bear against an annular stop 43 bearing on the cylinder 21.
  • the stop 43 is provided with holes 43A for the passage of gas.
  • the device described in this variant has the same advantages as that described above.
  • the precompression of the gas before contact separation promotes the breaking of the current, in particular of the capacitive currents.
  • the invention applies to high-voltage circuit breakers, of the open type or of the type with a metal shell to the ground.
EP97400084A 1996-01-22 1997-01-16 Lastschalter mit Kontakten mit Doppelbewegung Expired - Lifetime EP0785562B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9600664A FR2743936B1 (fr) 1996-01-22 1996-01-22 Disjonteur a double mouvement des contacts
FR9600664 1996-01-22

Publications (2)

Publication Number Publication Date
EP0785562A1 true EP0785562A1 (de) 1997-07-23
EP0785562B1 EP0785562B1 (de) 2001-11-28

Family

ID=9488317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400084A Expired - Lifetime EP0785562B1 (de) 1996-01-22 1997-01-16 Lastschalter mit Kontakten mit Doppelbewegung

Country Status (4)

Country Link
EP (1) EP0785562B1 (de)
AT (1) ATE209827T1 (de)
DE (1) DE69708466T2 (de)
FR (1) FR2743936B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907195A1 (de) * 1997-10-02 1999-04-07 Gec Alsthom T & D Sa Druckgasschalter mit Zahnstange-getriebe
WO2000077809A1 (de) * 1999-06-11 2000-12-21 Siemens Aktiengesellschaft Hochspannungsleistungsschalter mit einem abströmkanal
EP1879207A1 (de) * 2006-07-12 2008-01-16 ABB Technology AG Zahnstangengetriebe für elektrisches Schaltgerät
WO2012011119A1 (en) * 2010-07-20 2012-01-26 Bharat Heavy Electricals Limited Pressure propelled contact system for gas circuit breaker interrupter
CN105551883A (zh) * 2016-02-19 2016-05-04 浙江开关厂有限公司 双向吹气灭弧方法及灭弧室
CN109791852A (zh) * 2016-09-27 2019-05-21 西门子股份公司 用于高压功率开关的接触件以及制造接触件的方法
CN114420480A (zh) * 2022-01-06 2022-04-29 平高集团有限公司 具有隔离断口的高压开关设备及其动触头组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626435A1 (de) * 1976-06-12 1977-12-22 Merlin Gerin Druckgasschalter
FR2696316A1 (fr) * 1992-10-06 1994-04-08 Alsthom Gec Disjoncteur à haute ou moyenne tension à expansion thermique et soufflage additionnel par aspiration.
EP0664552A1 (de) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Autopneumatischer Druckgasschalter mit Doppelbewegung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626435A1 (de) * 1976-06-12 1977-12-22 Merlin Gerin Druckgasschalter
FR2696316A1 (fr) * 1992-10-06 1994-04-08 Alsthom Gec Disjoncteur à haute ou moyenne tension à expansion thermique et soufflage additionnel par aspiration.
EP0664552A1 (de) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Autopneumatischer Druckgasschalter mit Doppelbewegung

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907195A1 (de) * 1997-10-02 1999-04-07 Gec Alsthom T & D Sa Druckgasschalter mit Zahnstange-getriebe
FR2769403A1 (fr) * 1997-10-02 1999-04-09 Gec Alsthom T & D Sa Interrupteur a gaz comprime avec un engrenage a cremailleres
US6015960A (en) * 1997-10-02 2000-01-18 Gec Alsthom T&D Sa Compressed gas interrupter with a rack mechanism
WO2000077809A1 (de) * 1999-06-11 2000-12-21 Siemens Aktiengesellschaft Hochspannungsleistungsschalter mit einem abströmkanal
US6646850B1 (en) 1999-06-11 2003-11-11 Siemens Aktiengesellschaft High-voltage power breaker having an outlet flow channel
DE19928080C5 (de) * 1999-06-11 2006-11-16 Siemens Ag Hochspannungsleistungsschalter mit einem Abströmkanal
EP1879207A1 (de) * 2006-07-12 2008-01-16 ABB Technology AG Zahnstangengetriebe für elektrisches Schaltgerät
US7994442B2 (en) 2006-07-12 2011-08-09 Abb Technology Ag Rack gear for electrical circuit breaker
WO2012011119A1 (en) * 2010-07-20 2012-01-26 Bharat Heavy Electricals Limited Pressure propelled contact system for gas circuit breaker interrupter
CN105551883A (zh) * 2016-02-19 2016-05-04 浙江开关厂有限公司 双向吹气灭弧方法及灭弧室
CN105551883B (zh) * 2016-02-19 2018-06-12 浙江开关厂有限公司 双向吹气灭弧室
CN109791852A (zh) * 2016-09-27 2019-05-21 西门子股份公司 用于高压功率开关的接触件以及制造接触件的方法
CN114420480A (zh) * 2022-01-06 2022-04-29 平高集团有限公司 具有隔离断口的高压开关设备及其动触头组件
CN114420480B (zh) * 2022-01-06 2023-12-08 平高集团有限公司 具有隔离断口的高压开关设备及其动触头组件

Also Published As

Publication number Publication date
DE69708466T2 (de) 2002-07-04
EP0785562B1 (de) 2001-11-28
DE69708466D1 (de) 2002-01-10
FR2743936B1 (fr) 1998-02-20
ATE209827T1 (de) 2001-12-15
FR2743936A1 (fr) 1997-07-25

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