EP0441292B1 - Disjoncteur à moyenne ou haute tension à autosoufflage - Google Patents
Disjoncteur à moyenne ou haute tension à autosoufflage Download PDFInfo
- Publication number
- EP0441292B1 EP0441292B1 EP91101455A EP91101455A EP0441292B1 EP 0441292 B1 EP0441292 B1 EP 0441292B1 EP 91101455 A EP91101455 A EP 91101455A EP 91101455 A EP91101455 A EP 91101455A EP 0441292 B1 EP0441292 B1 EP 0441292B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- volume
- semi
- cylinder
- circuit breaker
- piston
- 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
Links
Images
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
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
-
- 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
- H01H33/901—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 making use of the energy of the arc or an auxiliary arc
Definitions
- the present invention relates to a medium or high voltage circuit breaker in which the insulation is provided by a gas with good dielectric properties, such as sulfur hexafluoride (SF6), this same gas ensuring by self-blowing the extinction of the 'arc which forms at the separation of the arcing contacts of the circuit breaker.
- a gas with good dielectric properties such as sulfur hexafluoride (SF6)
- thermal volume or blowing volume which contains the arcing contacts and which, when the contacts are separated, is heated by the arcing and therefore undergoes a pressure increase. At the first zero crossing of the current, the gas expands and blows the arc.
- the displacement of the piston is more or less important and correlatively, the blowing volume is more or less large.
- Such a device has a drawback.
- a first object of the invention is to cut the high currents by self-blowing with thermal expansion in a thermal expansion volume dimensioned for this purpose, and the breaking of low currents by self-pneumatic boost blowing with piston in a part only thermal expansion volume.
- a second object of the invention is to provide an apparatus in which the speed and the ascent stroke of the semi-fixed assembly are progressively limited.
- a third object of the invention is to provide an apparatus into which fresh gas is injected into the area of the arcing contacts during an engagement maneuver, which notably improves the operation of the apparatus during the cycles of operation of the aforementioned type.
- circuit breaker of the invention As defined by claim 1. With regard to features of a preferred implementation of this circuit breaker, reference is made to the dependent claims.
- FIG 1 there is a casing 1, made of insulating material, inside which there is a gas with good dielectric properties such as sulfur hexafluoride SF6, under a pressure of one to a few bars.
- a first socket 2 passing through the envelope in a sealed manner, is electrically connected by a braid 3, to a first contact 4 called semi-fixed for reasons explained below.
- the contact 4, produced in tubular form, is terminated by a wearing part 4A made of material resistant to the effects of the electric arc, for example a tungsten-based alloy.
- Rod 7 has an end 7A of material resistant to the effects of the electric arc.
- the semi-fixed contact 4 carries a piston 8 sliding in a fixed cylinder 9; the stroke of the piston 8 is limited by a lower shoulder 11 and an upper ring 12; the semi-fixed contact 4 is pushed by a spring 13 which is compressed when the circuit breaker is in the engaged position, as is the case in FIG. 1.
- the cylinder 9 is fixed by a bottom 14 to a cylinder 15 of larger dimensions; the cylinder 15 is fixed to the casing 1; it carries, at one end, an insulating nozzle 16, through which the rod 7 slides.
- the piston 8 separates the interior of the cylinder into two volumes, V1 at the bottom of the figure and V2 at the top.
- the volumes V1 and V2 can communicate through orifices 18 made through the piston 8; these orifices can be closed simultaneously by a one-way valve made up of a washer 19 retained by a shoulder 21 of the piston 8.
- the volume V2 can communicate with the volume V3 outside the cylinder 9 by orifices 22 made in the bottom of this cylinder; these orifices can be closed simultaneously by a one-way valve constituted by a washer 23 retained by the crown 12.
- Ports 24 made in the cylinder 15 facilitate the circulation of the gas inside the envelope 1.
- V4 denotes the volume between the cylinders 15 and 9; this volume V4, in permanent communication with the volume V1 by a passage between the nozzle 16 and the end of the cylinder 9, constitutes, with the volume V1, a volume V1 + V4 of thermal expansion of the circuit breaker.
- the rod 7 is pulled by the operating mechanism towards the bottom of the figure.
- the semi-fixed contact 4, pushed by the spring 13, accompanies the rod in its movement, until it is stopped by the shoulder 11.
- the rod continues its movement alone, thus causing the separation of the contacts.
- An arc 50 erupts between the contacts ( Figure 2) and heats the surrounding gas.
- the overpressure, generated by the displacement of the piston 8 and the heating of the gas in the volumes V1 and V4 causes a blowing of the arc, through the nozzle 16 and the contact 4A, and its extinction at a zero crossing of the current.
- the tripping process is identical to that just described, until the contacts are separated.
- the arc 51 (FIG. 3) is very large and produces a release of heat which leads to a very strong increase in the pressure in the volumes V1 and V4.
- the contact 4 is pushed up towards the top of the figure, due to the very strong pressure which is exerted on the piston 8 and which produces a force greater than that of the spring 13.
- the volume V1 is thus enlarged, so that the the pressure which reigns there, while being significant, nevertheless retains an acceptable value.
- the overpressure in the volume V1 causes the closure of the valve 19 which isolates the volume V2.
- the latter decreases due to the displacement of the piston 8; he this results in an increase in the pressure in the volume V2 which, on the one hand, closes the valve 23 and on the other hand, limits the speed and the stroke of the piston 8, the gas of the volume V2 acting as a damper.
- the arc 51 does not stretch too much, which makes it possible to limit the heating and pollution of the surrounding gas by the decomposition products of SF6.
- the overpressure generated essentially by thermal expansion in the volumes V1 and V4 causes a blowing of the arc through the nozzle 16 and the contact 4A, and its extinction at a zero crossing of the current.
- the invention applies to medium and high voltage circuit breakers.
Landscapes
- Circuit Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9001406A FR2657998B1 (fr) | 1990-02-07 | 1990-02-07 | Disjoncteur a moyenne ou haute tension a autosoufflage. |
FR9001406 | 1990-02-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0441292A1 EP0441292A1 (fr) | 1991-08-14 |
EP0441292B1 true EP0441292B1 (fr) | 1995-05-10 |
Family
ID=9393462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91101455A Expired - Lifetime EP0441292B1 (fr) | 1990-02-07 | 1991-02-04 | Disjoncteur à moyenne ou haute tension à autosoufflage |
Country Status (11)
Country | Link |
---|---|
US (1) | US5126516A (zh) |
EP (1) | EP0441292B1 (zh) |
JP (1) | JPH0828158B2 (zh) |
CN (1) | CN1023735C (zh) |
AT (1) | ATE122498T1 (zh) |
BR (1) | BR9100493A (zh) |
CA (1) | CA2035688C (zh) |
DE (1) | DE69109508T2 (zh) |
DK (1) | DK0441292T3 (zh) |
ES (1) | ES2072460T3 (zh) |
FR (1) | FR2657998B1 (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2683382B1 (fr) * | 1991-10-31 | 1997-04-30 | Alsthom Gec | Disjoncteur a moyenne ou haute tension a contacts d'arc en bout. |
FR2683383B1 (fr) * | 1991-11-04 | 1993-12-31 | Gec Alsthom Sa | Disjoncteur a haute ou moyenne tension a triple mouvement. |
FR2692716B1 (fr) * | 1992-06-18 | 1994-08-19 | Alsthom Gec | Disjoncteur à haute ou moyenne tension à expansion thermique et soufflage d'appoint. |
US20050045595A1 (en) * | 2003-09-03 | 2005-03-03 | Christian Daehler | Pressure-limiting valve for a puffer interrupter assembly |
ATE544169T1 (de) * | 2008-12-18 | 2012-02-15 | Abb Technology Ag | Kurzschlussvorrichtung für mittel- und hochspannungsschaltvorrichtungen |
FR2949170B1 (fr) | 2009-08-14 | 2011-11-25 | Areva T & D Sas | Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manoeuvre reduite |
KR101309317B1 (ko) * | 2009-09-10 | 2013-09-30 | 엘에스산전 주식회사 | 가스 차단기용 밸브 및 그를 이용한 가스 차단기 |
EP2387057B1 (de) * | 2010-05-12 | 2012-05-23 | ABB Technology AG | Gasisolierter Hochspannungsschalter |
FR2962253B1 (fr) | 2010-07-01 | 2012-08-31 | Areva T & D Sas | Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de man?uvre et dimensions reduites |
JP2012094455A (ja) * | 2010-10-28 | 2012-05-17 | Toshiba Corp | ガス遮断器 |
FR2978597A1 (fr) * | 2011-07-26 | 2013-02-01 | Alstom Grid Sas | Commande d'un interrupteur ou d'un disjoncteur |
CN103280375B (zh) * | 2013-05-24 | 2015-07-01 | 沈阳华德海泰电器有限公司 | 一种用于真空断路器操作机构的油缓冲器 |
JP6987794B2 (ja) * | 2016-06-03 | 2022-01-05 | アーベーベー・シュバイツ・アーゲーABB Schweiz AG | ガス絶縁低電圧または中電圧負荷遮断スイッチ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5535432A (en) * | 1978-09-04 | 1980-03-12 | Mitsubishi Electric Corp | Switch |
EP0041081A1 (de) * | 1980-06-02 | 1981-12-09 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Elektrischer Selbstblasschalter |
DE3438635A1 (de) * | 1984-09-26 | 1986-04-03 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Druckgasschalter |
FR2622737B1 (fr) * | 1987-11-04 | 1995-04-14 | Merlin Gerin | Disjoncteur electrique a auto-expansion a volume de chambre d'extinction variable |
-
1990
- 1990-02-07 FR FR9001406A patent/FR2657998B1/fr not_active Expired - Lifetime
-
1991
- 1991-02-04 DE DE69109508T patent/DE69109508T2/de not_active Expired - Fee Related
- 1991-02-04 AT AT91101455T patent/ATE122498T1/de not_active IP Right Cessation
- 1991-02-04 EP EP91101455A patent/EP0441292B1/fr not_active Expired - Lifetime
- 1991-02-04 ES ES91101455T patent/ES2072460T3/es not_active Expired - Lifetime
- 1991-02-04 DK DK91101455.3T patent/DK0441292T3/da active
- 1991-02-05 CA CA002035688A patent/CA2035688C/fr not_active Expired - Fee Related
- 1991-02-06 JP JP3102166A patent/JPH0828158B2/ja not_active Expired - Lifetime
- 1991-02-06 BR BR919100493A patent/BR9100493A/pt not_active IP Right Cessation
- 1991-02-06 US US07/651,155 patent/US5126516A/en not_active Expired - Fee Related
- 1991-02-07 CN CN91100956.6A patent/CN1023735C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2072460T3 (es) | 1995-07-16 |
JPH065167A (ja) | 1994-01-14 |
FR2657998B1 (fr) | 1992-04-10 |
CN1063966A (zh) | 1992-08-26 |
JPH0828158B2 (ja) | 1996-03-21 |
DK0441292T3 (da) | 1995-08-14 |
ATE122498T1 (de) | 1995-05-15 |
CN1023735C (zh) | 1994-02-09 |
CA2035688C (fr) | 1994-07-26 |
US5126516A (en) | 1992-06-30 |
CA2035688A1 (fr) | 1991-08-08 |
BR9100493A (pt) | 1991-10-29 |
DE69109508D1 (de) | 1995-06-14 |
EP0441292A1 (fr) | 1991-08-14 |
FR2657998A1 (fr) | 1991-08-09 |
DE69109508T2 (de) | 1995-09-14 |
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