EP0807946B1 - Hochspannungs-Blaskolbenschalter - Google Patents

Hochspannungs-Blaskolbenschalter Download PDF

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Publication number
EP0807946B1
EP0807946B1 EP97401034A EP97401034A EP0807946B1 EP 0807946 B1 EP0807946 B1 EP 0807946B1 EP 97401034 A EP97401034 A EP 97401034A EP 97401034 A EP97401034 A EP 97401034A EP 0807946 B1 EP0807946 B1 EP 0807946B1
Authority
EP
European Patent Office
Prior art keywords
piston
gas
fixed
tube
ring
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
EP97401034A
Other languages
English (en)
French (fr)
Other versions
EP0807946A1 (de
Inventor
Bernard Gallix
Roger Ledru
Antoine Tolossi
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 EP0807946A1 publication Critical patent/EP0807946A1/de
Application granted granted Critical
Publication of EP0807946B1 publication Critical patent/EP0807946B1/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 self-blowing circuit breaker comprising an envelope filled with a pressurized dielectric gas, two cooperating arcing contacts, one of which is part of a contact assembly mobile secured to an operating member and adapted to be moved axially in the envelope between a closed position and a position opening, the movable contact assembly comprising a first tube carrying its end the movable arcing contact and a second tube coaxial with the first tube, carrying at the end a permanent movable and delimiting contact, on both sides a crown connecting the first tube and the second tube, a blowing closed by a blowing nozzle and a compression chamber communicating with the blowing chamber and closed by a piston.
  • Patent application FR 2 696 274 describes such a circuit breaker.
  • the piston is semi-mobile and there is provided a means for immobilizing the piston during a first part of the movement of the movable contact assembly when the circuit breaker opens and a means to, on the contrary, drive axially this same piston during a second part of the displacement of this set.
  • the means for axially driving the movable contact assembly to during this second part of the displacement is constituted by an organ drive integral with the movable contact assembly which causes a stop secured to the piston.
  • This stop is arranged on the path of the organ training.
  • the piston is held in a fixed position by a spring placed between the piston and the drive member and pushing the piston which is retained by a crown in abutment against a fixed member, the crown being integral with a tube itself secured to the piston.
  • the organ drive slides in a lumen of the tube connecting the piston to the crown until it comes to a stop at the end of the resulting light, then the piston in the second part of the trip.
  • the spring urging the semi-mobile piston causes a permanent effort on the control rod and causes a increase in the operating energy required.
  • EP 0 126 929 describes a compressed gas switch according to the preamble of claim 1 having a slightly different structure in the sense that there is no second tube but an annular piston 12, linked to a tube 8, carrying a nominal current contact 5 and sliding directly into an external cylindrical housing 14.
  • This arrangement ensures the automatic recoil of the free piston under the effect increase in pressure in the compression chamber at the time of the opening maneuver and thereby limits the increase in pressure, it thus brings the advantages of the semi-mobile piston of the first document cited in the introduction but without the control rod being subject to additional effort.
  • the object of the invention is therefore to propose a circuit breaker having a structure as defined in the introduction, incorporating a free piston with its advantages but overcoming the drawback mentioned above.
  • the subject of the invention is therefore a self-blowing circuit breaker comprising an envelope filled with a dielectric gas under pressure, two arcing contacts cooperating with each other, one of which is part of a fixed mobile contact assembly an actuator and adapted to be moved axially in the envelope between a closed position and an open position, the movable contact assembly comprising a first tube carrying to its end of the movable arcing contact and a second tube coaxial with the first tube, carrying at the end a permanent movable and delimiting contact, on both sides a crown connecting the first tube and the second tube, a blowing closed by a blowing nozzle and a compression chamber communicating with the blowing chamber and closed by a piston, characterized in that said annular piston located between the two said tubes is mounted at free sliding between a fixed front stop and a thrust spring, one of which end is supported on the piston and whose other end is in fixed support, this fixed support 18 being located on the other side of said front stop fixed relative to said arcing contacts, said piston comprising on the side
  • Figures 1 to 6 partially show a circuit breaker according to the invention in its different positions during an opening maneuver, from the closed state in figure 1 to the complete opening in figure 6.
  • Figure 7 is an enlarged view of a detail of the previous figures showing the piston with its recess and the ring, allowing damping when the piston returns.
  • circuit breaker comprising an example is described.
  • for each phase an insulating envelope.
  • the invention applies also to earthed metal casing circuit breakers comprising a separate envelope for each phase or a single envelope for all three phases.
  • reference 1 designates an envelope insulating, preferably porcelain, delimiting an expansion chamber 2 filled with a gas having good dielectric properties, for example hexafluoride of sulfur under a pressure of a few bars.
  • the circuit breaker includes a fixed assembly and a contact assembly mobile.
  • the fixed assembly includes an arcing contact 3 and a permanent contact fixed consisting of a circular series of fingers 4. These fixed arcing contacts 3 and permanent 4 are linked to a first socket 5.
  • the movable contact assembly includes an operating part 6 insulation passing through chamber 2 and connected, at one of its ends, to a mechanism not shown. Its other end is linked to a whole metal of movable contacts comprising two coaxial tubes 7 and 8. These two tubes 7 and 8 are interconnected by a metal crown 9.
  • the tube internal 7 carries the movable arcing contact 10 and the external tube 8 carries the contact mobile permanent 11 which cooperates, in the closed position of the circuit breaker such that shown in Figure 1, by its outer periphery with the fingers 4 of the contact permanent fixed.
  • a nozzle blowing 12 made of insulating material.
  • the space between the permanent movable contact 11, the arcing contact mobile 10, the crown 9 and the blowing nozzle 12 constitutes a blowing 13. Furthermore, the tubes 7 and 8, an annular piston 14 located between the two tubes, and the metal crown 9 define a compression chamber 15. This compression chamber 15 is separated from the blowing chamber 13 by the metal crown 9 fitted with one-way valves 16 authorizing the passage of gas from the compression chamber 15 to the blowing 13.
  • Permanent contact fingers 17, linked to a bottom plate 18 connected to a second outlet not shown, are in electrical contact sliding with the outer tube 8.
  • the annular piston 14 is mounted to slide freely between a stop fixed front and a thrust spring 19, one end of which bears on the piston and the other against the fixed bottom plate 18.
  • the annular piston 14 also slides along three fixed tie rods 20 (only one is visible in the figures) whose head 21 serves as a fixed front stop for the piston 14.
  • the fixed tie rods 20 are fixed to a fixed sleeve 22 linked to the plate bottom 18. This sleeve 22 guides the spring 19.
  • the piston 14 is equipped with a valve 23 allowing the passage of the gas from the expansion chamber 2 towards the compression chamber 15 and not in the reverse. It also includes an annular recess 24 clearly visible on the Figures 3, 4 and 5.
  • a floating ring 25 is housed at the bottom of this recess 24, pushed by the piston against a washer fixed 26, itself pressing against the head 21 of the tie rods 20.
  • the floating ring 25 is pierced with three 120 ° holes for the passage tie rods and also orifices 27 interposed between the through holes of the tie rods 20.
  • the floating ring 25 is mounted between the fixed washer 26 and a member rear retainer 28 constituting a flange of a barrel 29.
  • This barrel 29 is immobilized axially on the tie rod 20 by a shoulder 30 of the tie rod and by the head 21 of the tie rod 20.
  • the head 21 is actually a screw head tightening the fixed washer 26 and barrel 29 against the shoulder 30 of the tie rod 20.

Landscapes

  • Circuit Breakers (AREA)

Claims (2)

  1. Selbstlöschender Lastschalter, mit einer mit einem dielektrischen Gas unter Druck gefüllten Hülle (1), zwei zusammenwirkenden Lichtbogenkontakten (3, 10), von denen einer (10) Teil einer mobilen Kontaktanordnung ist, die mit einem Betätigungsmittel (6) verbunden und geeignet ist, zwischen einer Schließstellung und einer Öffnungsstellung in der Hülle axial versetzt zu werden, wobei die mobile Kontaktanordnung ein erstes Rohr (7), das an einem Ende den mobilen Lichtbogenkontakt (10) trägt, und ein zum ersten Rohr koaxiales zweites Rohr (8), das am Ende einen mobilen Permanentkontakt (11) trägt, umfasst, und wobei beiderseits einer das erste Rohr (7) und das zweite Rohr (8) verbindenden Krone (9) eine von einer Blasdüse (12) verschlossene Funkenlöschkammer (13) und eine mit der Funkenlöschkammer (13) kommunizierende, von einem Kolben (14) verschlossene Kompressionskammer (15) abgegrenzt ist, welcher dadurch gekennzeichnet ist, dass der ringförmige, sich zwischen den beiden Rohren (7, 8) befindliche Kolben (14) zwischen einem festen vorderen Anschlag (21) und einer Druckfeder (19), deren eines Ende gegen den Kolben (14) und deren anderes Ende gegen einen festen Halt gestützt ist, frei verschiebbar montiert ist, wobei sich dieser feste Halt (18) in Bezug auf die Lichtbogenkontakte (3, 10) auf der anderen Seite des genannte festen vorderen Anschlags (21) befindet, und der Kolben auf der dem Anschlag der Druckfeder (19) gegenüberliegenden Seite eine ringförmige Aussparung (24) aufweist, in der sich, in Anschlagsposition des Kolbens gegen den vorderen Anschlag, ein Ring (25) befindet, welcher Ring zwischen einer mit dem vorderen Anschlag (21) verbundenen festen Scheibe (26) und einem hinteren Rückhaltemittel (28) lose montiert ist und von wenigstens einer Öffnung (27) durchbohrt ist, die von der festen Scheibe (26) verschlossen ist, wenn er in Position des vorderen Anschlags ist, welche eine Rückschlagsklappe bildet, die das Einströmen des Gases in die Aussparung (24) während des Zurückspringens des Kolbens unter dem Druck des Gases in der Kompressionskammer (15) bei einer Öffnung des Lastschalters ermöglicht, wobei die Bewegung des Kolbens nach vorne zu dessen Rückkehr aufgrund der Druckkraft der Druckfeder (19) durch das Polster des Gases, das durch den in die Aussparung eindringenden Ring (25) komprimiert ist, gedämpft wird.
  2. Lastschalter nach Anspruch 1, dadurch gekennzeichnet, dass der Kolben (14) auf den mit dem festen Halt (18) der Druckfeder (19) verbundenen festen Streben (20) verschiebbar montiert ist, und deren Kopf (21) als fester vorderer Anschlag für den Kolben (14) dient, und dass sich das hintere Rückhaltemittel (28) des losen Rings (25) auf jeder Strebe (20) befindet.
EP97401034A 1996-05-13 1997-05-07 Hochspannungs-Blaskolbenschalter Expired - Lifetime EP0807946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605912 1996-05-13
FR9605912A FR2748598B1 (fr) 1996-05-13 1996-05-13 Disjoncteur a haute tension a auto-soufflage

Publications (2)

Publication Number Publication Date
EP0807946A1 EP0807946A1 (de) 1997-11-19
EP0807946B1 true EP0807946B1 (de) 2001-12-12

Family

ID=9492067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97401034A Expired - Lifetime EP0807946B1 (de) 1996-05-13 1997-05-07 Hochspannungs-Blaskolbenschalter

Country Status (7)

Country Link
US (1) US5898150A (de)
EP (1) EP0807946B1 (de)
DE (1) DE69708966T2 (de)
EG (1) EG21480A (de)
ES (1) ES2167691T3 (de)
FR (1) FR2748598B1 (de)
PT (1) PT807946E (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4174094B2 (ja) * 1998-01-29 2008-10-29 株式会社東芝 ガス遮断器
US6310311B1 (en) * 1999-08-05 2001-10-30 Gary Hakes Integrated bushing component
FR2799571B1 (fr) * 1999-10-07 2001-12-21 Schneider Electric High Voltag Disjoncteur a autoexpansion a clapet de surpression et de remplissage
FR2808618B1 (fr) * 2000-05-03 2002-06-14 Alstom Disjoncteur comportant, dans une enveloppe remplie d'un gaz dielectrique sous pression, un ensemble mobile
EP1675145A1 (de) * 2004-12-23 2006-06-28 ABB Technology AG Hochleistungsschalter mit Dichtung gegen Heissgas
FR2892851B1 (fr) * 2005-11-03 2013-12-06 Areva T & D Sa Chambre de coupure de courant a double chambre de compression
FR2922043B1 (fr) 2007-10-03 2009-12-11 Areva T & D Sa Chambre de coupure de disjoncteur a double volume de compression
KR101013709B1 (ko) * 2008-12-03 2011-02-10 엘에스산전 주식회사 수배전반의 고속 투입 스위치
KR101309317B1 (ko) * 2009-09-10 2013-09-30 엘에스산전 주식회사 가스 차단기용 밸브 및 그를 이용한 가스 차단기
EP2343721A1 (de) * 2010-01-06 2011-07-13 ABB Research Ltd. Gasisolierter Hochspannungsschalter
CN102592876B (zh) * 2012-03-01 2014-10-01 广东金晖隆开关有限公司 吹气灭弧负荷开关
HUE052765T2 (hu) * 2016-08-26 2021-05-28 Abb Power Grids Switzerland Ag Kapcsoló és eljárás a kapcsoló megszakítására
CN111199849B (zh) * 2019-12-26 2021-12-17 河南平高电气股份有限公司 灭弧室的动触头组件及使用该动触头组件的动触头装配

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696274A (en) * 1953-06-15 1954-12-07 Southern Lightweight Aggregate Air and gas treatment system
DE3127678A1 (de) * 1981-07-14 1983-02-10 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungs-leistungsschalter
DE3141324C2 (de) * 1981-10-17 1986-02-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Leistungsschalter
SE432321B (sv) * 1982-08-16 1984-03-26 Asea Ab Elektrisk brytare med gasformigt sleckmedel
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
US4609798A (en) * 1984-07-27 1986-09-02 Alsthom Means for assembling two enclosures of an electrical cutout apparatus
FR2638564B1 (fr) * 1988-11-02 1990-11-30 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique sous pression
SE466979B (sv) * 1990-09-11 1992-05-04 Asea Brown Boveri Hoegspaenningsbrytare av sjaelvblaasande typ
FR2696274B1 (fr) * 1992-09-29 1994-11-04 Alsthom Gec Disjoncteur à haute tension à auto-soufflage ayant une chambre de coupure à compression de gaz réduite.
CA2404251A1 (en) * 2000-04-05 2001-10-18 Ods Properties, Inc. Systems and methods for recognizing preferred wagerers

Also Published As

Publication number Publication date
EG21480A (fr) 2001-11-28
FR2748598B1 (fr) 1998-06-05
PT807946E (pt) 2002-05-31
US5898150A (en) 1999-04-27
FR2748598A1 (fr) 1997-11-14
DE69708966D1 (de) 2002-01-24
DE69708966T2 (de) 2002-08-01
EP0807946A1 (de) 1997-11-19
ES2167691T3 (es) 2002-05-16

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