EP0667633B1 - Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement - Google Patents

Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement Download PDF

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Publication number
EP0667633B1
EP0667633B1 EP95400111A EP95400111A EP0667633B1 EP 0667633 B1 EP0667633 B1 EP 0667633B1 EP 95400111 A EP95400111 A EP 95400111A EP 95400111 A EP95400111 A EP 95400111A EP 0667633 B1 EP0667633 B1 EP 0667633B1
Authority
EP
European Patent Office
Prior art keywords
piston
tube
contact assembly
wall
moving contact
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
EP95400111A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0667633A1 (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 EP0667633A1 publication Critical patent/EP0667633A1/fr
Application granted granted Critical
Publication of EP0667633B1 publication Critical patent/EP0667633B1/fr
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 with semi-mobile piston pneumatically locked.
  • 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 between a closed position and a position opening, the mobile contact assembly being constituted by a first tube and a second coaxial tube to the first tube to delimit, on either side of a first crown connecting the first and second tubes, a chamber supply air and a compression chamber communicating with the blowing chamber and closed by a semi-mobile piston.
  • the gas in the compression chamber is compressed because the distance between the piston and the crown separating the chamber compression of the blowing chamber decreases.
  • the dielectric gas is compressed for all movement of the movable contact assembly between the closed position and open position.
  • the moving the moving contact assembly requires certain amount of energy. The amount of energy necessary is all the greater as the gas in the compression chamber is compressed throughout the stroke of the mobile contact assembly.
  • the object of the invention is to reduce consumption of the circuit breaker during an opening operation.
  • 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 movable contact, these means comprising pneumatic means cooperating with mechanical means.
  • pneumatic means are provided in order to cooperate with mechanical means which can thus be lighten and reduced effort. This is important since the efforts of these mechanical means are transmitted in the kinematics of the device and are generally collected by the operating member, generally a connecting rod, and by levers cooperating with the latter.
  • 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 element and an end wall of the piston and a retaining member fixed cooperating with a stop wall of the piston.
  • the pneumatic means is a means of setting depression of the space between the retaining member fixed and the abutment wall, this space being sealed.
  • the pneumatic means consists of a annular element provided with at least one orifice and arranged between the end wall and the stop wall itself provided with at least one orifice, this annular element being stressed by at least one compression spring arranged between this annular element and the end wall, against the abutment wall of which it seals the orifice.
  • the stop element connected to the piston is said element annular, the compression spring of the pneumatic means being compressed during the training of this element by the drive body.
  • the pneumatic means which operates in vacuum during the first part of the movement of the whole movable between closed position and position opening, cooperates in keeping the piston stationary and thus allows the use of a very weak spring. So the force transmitted by this spring is also lower and there is no need to strengthen and weigh down the mobile assembly with its operating member.
  • the reference 1 designates an envelope preferably insulating, for example porcelain, filled a gas with good dielectric properties, for example sulfur hexafluoride under a pressure of a few bars.
  • the circuit breaker includes a fixed assembly and a mobile contact assembly.
  • the fixed assembly includes an arcing contact 3, consisting of a metal tube whose end 3A is made in a material resistant to the effects of the arc, for example a tungsten based alloy.
  • Fixed set includes also a fixed permanent contact 4 consisting of fingers protected by a corona hood 5. Arc contact and the fixed permanent contact are electrically connected to a first socket, not shown.
  • the movable contact assembly includes a operation 6 passing through the chamber in a sealed manner and connected to a mechanism not shown.
  • Room 6 is connected a metal assembly comprising two tubes 7 and 8 coaxial, the tube 8 having a larger diameter than the tube 7.
  • the two tubes 7, 8 are interconnected by a metal crown 9. These tubes and this crown are of preferably made in one piece from machining.
  • the tube 7 constitutes the movable arcing contact. His end 7A is made of a material resistant to effects of the arc and cooperates with contact 3, 3A.
  • Tube 8 has an end 8A carrying a blowing nozzle 10 in insulating material.
  • the tubular portion 8A constitutes the permanent mobile contact of the circuit breaker and cooperates when the circuit breaker is in the on position (position closing) with fingers 4 as shown in Figure 1.
  • the end 8A of the tube 8, the blowing nozzle 10, the tube 7 and the crown 9 define a blowing chamber 17.
  • the crown 9, the tubes 7 and 8 and a piston 11 delimit a compression chamber 18 separate from the blowing chamber 17 by the crown 9.
  • the piston slides axially between the tubes 7 and 8 in a sealed manner.
  • the piston 11 is connected to a tube 12 coaxial with the tubes 7 and 8.
  • the end of the tube 12 is connected to a crown 20 forming a stop wall.
  • the abutment wall 20 cooperates with a crown 14A connected to a fixed tube 14 coaxial with tube 12, the crown 14A forming an end stop member of travel of the tube 12 during a closing maneuver.
  • the tube 14 is electrically connected to a second outlet current not represented by an element fixed 21 also annular.
  • the tube 14 supports by elsewhere a permanent contact formed by fingers 16 in contact electric with tube 8.
  • One or more integral drive members 7B of the tube 7 and extending radially with respect thereto towards the tube 8 are engaged between the tube 7 and the tube 12.
  • One or more springs 15 are arranged between the fixed part 21 and an end wall 22 of the piston 11.
  • the piston 11 is equipped with a one-way valve 11A allowing gas circulation from inside the chamber delimited by envelope 1 towards the chamber compression 18.
  • the crown 9 is equipped with a unidirectional valve 9A allowing gas circulation from the compression chamber 18 to the blowing chamber 17.
  • the first mechanical means to immobilize the piston 11 during a first part of the displacement of the movable contact assembly between the closed position and the open position therefore include the spring 15 disposed between the fixed element 21 and the end wall 22 of the piston 11 and the fixed retaining member 14A cooperating with the abutment wall 20 of the piston 11.
  • the second mechanical means to move axially the piston 11 with the movable contact assembly during a second part of this same displacement of the whole of mobile contact include the drive member 7B integral with the mobile contact assembly which causes a stop element 23 linked to the piston 11 during the second part of the displacement of the movable contact assembly, this abutment element being arranged in the path of the member.
  • This stop element 23 connected to the piston 11 is an element annular which will be specified later.
  • a pneumatic means cooperates with these means mechanical.
  • This pneumatic means consists of the element annular 23 provided with at least one orifice 24 and disposed between the end wall 22 of the piston 11 and the wall of stop 20 of piston 11 itself provided with at least one orifice.
  • This annular element 23 is stressed by at least a compression spring 26 disposed between this element annular 23 and the end wall 22, against the wall of stop 20 which it tightly closes orifice 25 thanks to preferably a rubber washer 27 inserted in the annular element 23.
  • the compression spring 26 of the pneumatic means is compressed when driving the annular element 23 by the drive member 7B.
  • sliding seals 31, 32 are provided for sealing the vacuum chamber 28 visible on the figure 3.
  • the circuit breaker works as follows.
  • the circuit breaker is in the closing.
  • the spring pushes the semi-mobile piston 11 by its end wall 22, its abutment wall 20 being plated against the annular fixed stop member 14A.
  • the bedroom compression 18 is then of maximum volume.
  • the spring of compression 26 pushes the annular element 23 against the wall stop 20 closing its orifice 25.
  • the space filled with gas between this annular element 23 and the fixed stop member 14A being very weak, the pneumatic means then acts by depression as a means of holding the piston 11 against the stop member 14A whose action is added to that of the spring 15 which can thus be chosen of reduced size.
  • the operating member 6 is moved to the right of the Figure 1, moving the first tube 7 and the second tube 8.
  • the volume of the compression chamber 18 is reduced, the piston remains stationary, and the arc is blown by passing the gas contained in this chamber 18 through the valve 9A.
  • the drive member 7B moves freely along the tube 12. This first part of displacement takes place up to the position shown in figure 2.
  • the volume of the compression chamber 18 is substantially zero and the member 7B drive abuts against the annular element 23.
  • the dimensioning of the compression 18, tube 12 and tube 14 as well as the positioning of the drive member 7B are chosen so that this volume of the compression chamber is substantially zero at this time. Possibly, it can be made by choosing other dimensions a volume of non-zero "dead" compression chamber.

Landscapes

  • Circuit Breakers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Massaging Devices (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP95400111A 1994-01-25 1995-01-19 Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement Expired - Lifetime EP0667633B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400762 1994-01-25
FR9400762A FR2715499B1 (fr) 1994-01-25 1994-01-25 Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement.

Publications (2)

Publication Number Publication Date
EP0667633A1 EP0667633A1 (fr) 1995-08-16
EP0667633B1 true EP0667633B1 (fr) 1999-10-06

Family

ID=9459356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400111A Expired - Lifetime EP0667633B1 (fr) 1994-01-25 1995-01-19 Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement

Country Status (11)

Country Link
US (1) US5567923A (zh)
EP (1) EP0667633B1 (zh)
CN (1) CN1071483C (zh)
AT (1) ATE185446T1 (zh)
AU (1) AU687947B2 (zh)
BR (1) BR9500295A (zh)
DE (1) DE69512541T2 (zh)
ES (1) ES2136810T3 (zh)
FR (1) FR2715499B1 (zh)
PL (1) PL175980B1 (zh)
ZA (1) ZA95550B (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753564B1 (fr) * 1996-09-17 1998-11-27 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage et compression reduite
FR2753834B1 (fr) * 1996-09-23 1998-12-04 Disjoncteur a haute tension avec amortisseur
FR2761520B1 (fr) * 1997-03-27 1999-05-14 Gec Alsthom T & D Sa Disjoncteur a moyenne tension a faible energie de manoeuvre
FR2767221B1 (fr) * 1997-08-11 1999-09-10 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage et a compression reduite
DE10353497A1 (de) † 2003-11-11 2005-06-09 Siemens Ag Schalteinrichtung
CN100416724C (zh) * 2006-06-05 2008-09-03 西安交通大学 基于器壁侵蚀提高气动斥力和开断性能的低压灭弧系统
FR2997222B1 (fr) 2012-10-19 2015-01-16 Alstom Technology Ltd Dispositif d'etablissement et/ou de coupure de courant a contacts permanents a usure reduite
EP3264435B1 (en) * 2016-06-27 2019-04-24 ABB Schweiz AG Medium voltage circuit switch or breaker
CN113690093B (zh) * 2021-08-25 2023-01-24 西安西电开关电气有限公司 断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1765153A1 (de) * 1967-04-13 1971-07-01 Magrini Fab Riun Scarpa Selbstloeschender elektrischer Gasdruckschalter mit Schaltkammer mit einer Muendungsoeffnung
US3987262A (en) * 1975-05-12 1976-10-19 Westinghouse Electric Corporation Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure
CH590552A5 (zh) * 1975-09-26 1977-08-15 Sprecher & Schuh Ag
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2639147B1 (fr) * 1988-09-16 1990-12-14 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique utilise pour le soufflage
DE3930548C2 (de) * 1989-09-13 1994-05-19 Licentia Gmbh Druckgasschalter
SE466979B (sv) * 1990-09-11 1992-05-04 Asea Brown Boveri Hoegspaenningsbrytare av sjaelvblaasande typ

Also Published As

Publication number Publication date
ZA95550B (en) 1995-11-14
DE69512541T2 (de) 2000-05-04
AU687947B2 (en) 1998-03-05
ES2136810T3 (es) 1999-12-01
DE69512541D1 (de) 1999-11-11
ATE185446T1 (de) 1999-10-15
EP0667633A1 (fr) 1995-08-16
CN1111031A (zh) 1995-11-01
AU1133095A (en) 1995-08-03
PL175980B1 (pl) 1999-03-31
PL306939A1 (en) 1995-08-07
FR2715499B1 (fr) 1996-03-15
US5567923A (en) 1996-10-22
CN1071483C (zh) 2001-09-19
BR9500295A (pt) 1995-10-17
FR2715499A1 (fr) 1995-07-28

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