EP0806049B1 - Disjoncteur a haute tension - Google Patents
Disjoncteur a haute tension Download PDFInfo
- Publication number
- EP0806049B1 EP0806049B1 EP95942364A EP95942364A EP0806049B1 EP 0806049 B1 EP0806049 B1 EP 0806049B1 EP 95942364 A EP95942364 A EP 95942364A EP 95942364 A EP95942364 A EP 95942364A EP 0806049 B1 EP0806049 B1 EP 0806049B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- metal tube
- tube
- breaker according
- end portion
- 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
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims 2
- 238000005422 blasting Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
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
- H01H33/88—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
- H01H33/91—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 arc-extinguishing fluid being air or gas
-
- 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
- H01H33/025—Terminal arrangements
Definitions
- the present invention relates to a high-voltage circuit breaker of the kind described in the preamble to claim 1.
- the invention is primarily intended for circuit breakers with rated operating voltages of the order of magnitude of 100-300 kV, but it may also be used to advantage in circuit breakers for voltages both above and below this range, for example in medium-voltage circuit breakers.
- Circuit breakers of the above-mentioned kind are previously known, for example from the ABB pamphlet SESWG/B 2330 E "SF 6 Circuit-Breaker Type LTB", published in 1990.
- the blast piston and an annular guide means for the operating rod are fixed to the lower connection flange of the circuit breaker via rods arranged parallel to the operating rod.
- the other components included in the circuit breaker such as the movable arcing contact, the intermediate flange between the compression space (the puffer volume) and the pressure-collecting space (the self-blasting volume) etc., are fixed to the respective current path section (metal tube) by means of screw joints.
- the invention aims to provide a circuit breaker of the above-mentioned kind which is simpler to manufacture, contains a smaller number of components, and has a lower contact resistance between the current path sections of the circuit breaker than comparable prior art circuit breakers. This is achieved according to the invention with a design which exhibits the characteristic features described in the claims.
- the circuit breaker shown in Figure 1 has an elongated casing 10 which is made of insulating material and which is provided with an upper and a lower connection flange 11 and 12, respectively.
- the casing contains insulating gas, for example SF 6 .
- the contact device of the circuit breaker comprises a fixed main contact 13 which cooperates with an axially movable main contact 14, as well as a fixed plug-shaped arcing contact 15 which cooperates with an axially movable sleeve-shaped arcing contact 16.
- the circuit breaker has a stationary upper current path section 17 in the form of a copper tube with a thickness of one or a few millimetres.
- the lower end portion of the tube is compression-moulded and slotted so as to form a large number of contact fingers which are integrated with the tube and which constitute the fixed main contact 13 of the circuit breaker.
- the fixed arcing contact 15 of the circuit breaker is arranged coaxially in the tube 17 and is electrically and mechanically connected thereto by means of a holder 18.
- the movable main contact 14 of the circuit breaker consists of the upper end portion of a hollow cylinder 19 (puffer-type cylinder) in the form of a copper tube, which may have the same cross-section dimension as the copper tube 17.
- the movable arcing contact 16 is arranged coaxially in the cylinder 19 and is electrically and mechanically connected thereto.
- the hollow cylinder 19 encloses a pressure-collecting space 20 (the self-blasting volume), the volume of which is constant, and a compression space 21 (the puffer volume).
- the spaces 20 and 21 are separated by an intermediate flange 22 with openings which are covered by an annular plate serving as a nonreturn valve.
- the hollow cylinder 19 supports an electrically insulating blast nozzle 23 with an annular channel 24, which connects the pressure-collecting space 20 to the area where the arc is burning during an opening operation.
- the hollow cylinder 19 with the movable contacts 14, 16 is connected, via an operating rod 25, to an operating device and can be displaced by means of this device between a closed position and the open position shown in Figure 1.
- the hollow cylinder 19 surrounds the upper portion of a lower current path section 26 which is secured to the lower connection flange 12 and which consists of a copper tube with substantially the same cross-section dimension as the copper tube 17. Via sliding contact means 27, for example in the form of spiral springs of contact material, the hollow cylinder 19 is electrically connected to the lower current path section 26.
- the compression space 21 is limited downwards by an annular blast piston 28 which surrounds the operating rod 25.
- This piston is fixed by being pressed to the upper end portion of the copper tube 26.
- an annular guide washer for the operating rod 25 is pressed to the tube 26.
- the circuit breaker according to Figure 1 operates as follows:
- the operating rod 25 is pulled downwards with the aid of the operating device, whereby the main contacts 13 and 14 are first separated.
- the current thereby commutates over to the arcing contacts 15, 16 which, when separated, generate an arc between them.
- the arc heats the gas in the arcing region, whereby the gas pressure increases and a gas flow through the channel 24 into the pressure-collecting space 20 is started.
- the arc current follows the power-frequency sine curve, and when the current value approaches the zero crossing, the pressure in the arc region starts decreasing.
- the pressure increase in the pressure-collecting space 20, generated by the arc is insufficient to achieve an efficient flow of arc-extinguishing gas.
- the arc extinction is performed with the aid of the compression space 21, in which a pressure build-up takes place during the opening process because of the downward movement of the intermediate flange 22.
- the pressure in the compression space 21 then becomes higher than in the pressure-collecting space 20, which causes the nonreturn valve in the intermediate flange to open and cold arc-extinguishing gas to flow from the compression space 21 via the pressure-collecting space 20 and the channel 24 to the blast nozzle 23, where the arc is cooled and extinguished.
- Figure 2 shows separately the lower current path section 26 with a piston 28 and a guide washer 29 pressed to the section 26.
- the pressing has been accomplished by pressing the plastically machinable material in the tube 26, for example by so-called pressure turning, into prepared grooves 31 and 32, respectively, in the piston 28 and the guide washer 29.
- the piston 28 is also provided with grooves 33 into which tube material is pressed for forming a seat for the sliding contact means 27.
- Figures 3 and 4 show examples of puffer-type circuit breakers where the blast piston 28 is directly integrated into the tubular lower current path 26.
- the blast piston is here formed by inwardly arching the upper end portion of the tube 26 so as to create an annular bottom with a U-shaped profile, which may be semicircular according to Figure 3 or substantially perpendicular according to Figure 4.
- the arched curvature imparts enormous mechanical strength to the end portion of the tube. This is particularly true of the embodiment according to Figure 3, which may be used at high pressures in the compression chamber 21.
- the embodiment according to Figure 4 has lower strength and is therefore intended for circuit breakers dimensioned for medium-high pressures in the chamber 21.
- the blast piston 28 is provided with openings 34 covered by an annular washer 35 which serves as a nonreturn valve and has a profile adapted to the shape of the blast piston 28.
- an annular washer 35 which serves as a nonreturn valve and has a profile adapted to the shape of the blast piston 28.
- the end portion of the tube is also shaped with grooves for seals 36 and 37 against the hollow cylinder 19 and the operating rod 25, respectively.
- the embodiment of the blast piston shown in Figures 3 and 4 is not limited to use only in connection with puffer-type circuit breakers, but may be used for all types of SF 6 circuit breakers.
Landscapes
- Circuit Breakers (AREA)
- Fuses (AREA)
Claims (9)
- Disjoncteur à haute tension, comportant un boítier (10) oblong qui est empli d'un fluide gazeux extincteur d'arc et qui est muni de rebords (11, 12) de connexion, le boítier comportant un dispositif de contact ayant des contacts (13-16) coopérant fixes et mobiles de formation d'arcs et principaux, les contacts (13, 15) fixes étant disposés à une partie d'extrémité d'un premier tube (17) métallique fixé à un rebord (11) de connexion du disjoncteur, tandis que les contacts (14, 16) mobiles sont disposés à une partie d'extrémité d'un second tube (19) métallique, qui est connectée par l'intermédiaire d'une tige (25) d'actionnement à un dispositif d'actionnement et à l'aide de ce dispositif peut être déplacée axialement dans le boítier entre une position fermée et une position ouverte, dans lequel le second tube (19) métallique, par l'intermédiaire de moyens (27) de contact coulissant, est relié de manière permanente à un troisième tube (26) métallique fixé à l'autre rebord (12) de connexion du disjoncteur, et dans lequel le second tube (19) métallique, définit ensemble avec un piston (28) de soufflage, un espace (21) de compression, caractérisé en ce que les tubes (17, 19, 26) métalliques sont réalisés en un matériau en feuille usinable plastiquement et en ce que le piston (28) de soufflage est intégré dans le troisième tube (26) métallique par usinage plastique de celui-ci.
- Disjoncteur suivant la revendication 1, caractérisé en ce que le piston (28) d'échappement est constitué d'un corps sensiblement symétrique de révolution, qui est muni d'au moins une rainure (31) disposée à la périphérie du corps et qui est fixé à une partie d'extrémité du troisième tube (26) métallique par pressage du matériau usinable plastiquement du tube dans la rainure.
- Disjoncteur suivant la revendication 1, caractérisé en ce que le piston (28) de soufflage est constitué d'un rebord dirigé vers l'intérieur d'une partie d'extrémité du troisième tube (26) métallique, formée par usinage plastique.
- Disjoncteur suivant la revendication 1, 2 ou 3, caractérisé en ce qu'une rondelle (29) de guidage annulaire destinée à guider la tige (25) d'actionnement est fixée au troisième tube (26) métallique par pressage du matériau usinable plastiquement du tube dans une rainure (30) préparée et qui l'entoure de la rondelle (29).
- Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le contact (16) mobile de formation d'arc du disjoncteur est supporté par un corps annulaire qui, avec une buse (23) de soufflage, est fixé à une partie d'extrémité du second tube (19) métallique en pressant une partie de la paroi de tube dans une rainure l'entourant et préparée du corps.
- Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que dans le second tube (19) métallique, il est prévu un rebord (22) annulaire intermédiaire entre un espace (20) collecteur de pression et l'espace (21) de compression, le rebord intermédiaire étant fixé au tube (19) par pressage d'une partie de la paroi de tube dans une rainure entourante et préparée du rebord.
- Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le matériau des tubes (17, 19, 26) métalliques est du cuivre ou un alliage à base de cuivre.
- Disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que les tubes (17, 19, 26) métalliques sont réalisés à partir de feuille ayant une épaisseur d'au plus 4 mm.
- Procédé pour fabriquer un disjoncteur suivant l'une quelconque des revendications précédentes, caractérisé en ce que le trajet de courant principal du disjoncteur est constitué d'un certain nombre de tubes (17,19, 26) métalliques cylindro-circulaires et usinables plastiquement, de préférence en cuivre ou en alliage à base de cuivre, et en ce que le piston (28) de soufflage et tous autres éléments inclus dans le disjoncteur sont intégrés dans le tube métallique respectif par l'usinage plastique de celui-ci, par exemple par ce que l'on appelle un usinage au tour sous pression.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9404549A SE514917C2 (sv) | 1994-12-29 | 1994-12-29 | Högspänningsbrytare samt förfarande för tillverkning av en sådan brytare |
SE9404549 | 1994-12-29 | ||
PCT/SE1995/001574 WO1996021234A1 (fr) | 1994-12-29 | 1995-12-22 | Disjoncteur a haute tension |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0806049A1 EP0806049A1 (fr) | 1997-11-12 |
EP0806049B1 true EP0806049B1 (fr) | 2000-03-15 |
Family
ID=20396505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95942364A Expired - Lifetime EP0806049B1 (fr) | 1994-12-29 | 1995-12-22 | Disjoncteur a haute tension |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0806049B1 (fr) |
DE (1) | DE69515701T2 (fr) |
ES (1) | ES2146793T3 (fr) |
SE (1) | SE514917C2 (fr) |
WO (1) | WO1996021234A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1686602A1 (fr) * | 2005-02-01 | 2006-08-02 | ABB Technology AG | Dispositif de montage d'un buse pour un disjoncteur électrique |
EP1814132A1 (fr) | 2006-01-31 | 2007-08-01 | ABB Technology AG | Chambre de coupure pour un interrupteur à isolement gazeux |
CN102856114A (zh) * | 2011-06-29 | 2013-01-02 | Abb技术有限公司 | 用于高额定电流的双电流路径 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2821482B1 (fr) | 2001-02-27 | 2003-04-04 | Alstom | Disjoncteur incluant un canal de vidange de la chambre de compression par piston |
DE102009009452A1 (de) | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Schaltgeräteanordnung mit einer Schaltstrecke |
CN104143466B (zh) * | 2013-09-24 | 2017-06-30 | 国家电网公司 | 一种接地开关装配单元及其高速接地开关 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3808676A (en) * | 1973-02-16 | 1974-05-07 | Black & Decker Mfg Co | Process of manufacturing an armature-piston sub-assembly |
CH622377A5 (fr) * | 1977-12-12 | 1981-03-31 | Sprecher & Schuh Ag | |
SE452924B (sv) * | 1986-04-22 | 1987-12-21 | Asea Ab | Elektrisk brytare med gasformigt sleckmedel |
DE3763329D1 (de) * | 1986-09-02 | 1990-07-26 | Gen Motors Corp | Verfahren zur herstellung eines einheitsmoduls mit kolben und kolbenstange. |
-
1994
- 1994-12-29 SE SE9404549A patent/SE514917C2/sv not_active IP Right Cessation
-
1995
- 1995-12-22 DE DE69515701T patent/DE69515701T2/de not_active Expired - Lifetime
- 1995-12-22 WO PCT/SE1995/001574 patent/WO1996021234A1/fr active IP Right Grant
- 1995-12-22 ES ES95942364T patent/ES2146793T3/es not_active Expired - Lifetime
- 1995-12-22 EP EP95942364A patent/EP0806049B1/fr not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1686602A1 (fr) * | 2005-02-01 | 2006-08-02 | ABB Technology AG | Dispositif de montage d'un buse pour un disjoncteur électrique |
WO2006081697A1 (fr) * | 2005-02-01 | 2006-08-10 | Abb Technology Ag | Fixation de tuyere pour un appareil de coupure electrique |
US7619177B2 (en) | 2005-02-01 | 2009-11-17 | Abb Technology Ag | Nozzle fastening for electrical switching apparatus |
EP1814132A1 (fr) | 2006-01-31 | 2007-08-01 | ABB Technology AG | Chambre de coupure pour un interrupteur à isolement gazeux |
WO2007087733A1 (fr) * | 2006-01-31 | 2007-08-09 | Abb Technology Ag | Chambre de commutation pour un interrupteur à haute tension isolé au gaz |
US7902478B2 (en) | 2006-01-31 | 2011-03-08 | Abb Technology Ag | Switching chamber for a gas-insulated high-voltage switch |
CN101385109B (zh) * | 2006-01-31 | 2011-09-28 | Abb技术有限公司 | 气体绝缘高压开关的灭弧室 |
CN102856114A (zh) * | 2011-06-29 | 2013-01-02 | Abb技术有限公司 | 用于高额定电流的双电流路径 |
CN102856114B (zh) * | 2011-06-29 | 2016-10-05 | Abb技术有限公司 | 用于高额定电流的双电流路径 |
Also Published As
Publication number | Publication date |
---|---|
ES2146793T3 (es) | 2000-08-16 |
DE69515701D1 (de) | 2000-04-20 |
SE9404549D0 (sv) | 1994-12-29 |
DE69515701T2 (de) | 2000-11-02 |
EP0806049A1 (fr) | 1997-11-12 |
WO1996021234A1 (fr) | 1996-07-11 |
SE9404549L (sv) | 1996-06-30 |
SE514917C2 (sv) | 2001-05-14 |
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