EP0701264B1 - Disjoncteur à auto-soufflage à piston semi-mobile - Google Patents
Disjoncteur à auto-soufflage à piston semi-mobile Download PDFInfo
- Publication number
- EP0701264B1 EP0701264B1 EP95401992A EP95401992A EP0701264B1 EP 0701264 B1 EP0701264 B1 EP 0701264B1 EP 95401992 A EP95401992 A EP 95401992A EP 95401992 A EP95401992 A EP 95401992A EP 0701264 B1 EP0701264 B1 EP 0701264B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- pressure wall
- cylinder
- breaker
- tube
- 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
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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 semi-movable piston.
- a circuit breaker of the type self-blowing comprising an envelope filled with a gas dielectric under pressure, two arcing contacts cooperating between them, at least one of which is part of a set of movable contact secured to an operating member and adapted to be moved axially in the envelope between a closed position and an open position, the mobile contact assembly being constituted by a first tube and a second coaxial tube to the first tube for delimit, on either side of a first crown connecting the first and second tubes, a blowing and a compression chamber communicating with the blowing chamber and closed by a pressure wall a semi-mobile piston biased by a bearing spring on a fixed flange.
- the object of the invention is to reduce consumption of the circuit breaker during an opening operation.
- the piston consists of two parts, a first part comprising a first pressure wall and a second part comprising a second pressure wall, of surface front lower than that of the first wall of pressure, these two adjacent walls forming the wall of pressure of the piston and the first part being supported in the same direction as the opening direction against the second part on an inclined surface, in the closed position of the circuit breaker.
- said first part consists of a sliding cylinder on the first tube and provided at its end opposite the contacts with a annular flange intended to abut against said fixed flange in the closed position of the circuit breaker, of said annular pressure wall integral with said cylinder at its other end and a cylindrical part coaxial with said cylinder, integral with said pressure wall by one of its ends and having a surface inclined to its other end.
- said second part is made up a cylinder section coaxial with said cylinder and provided with its end opposite to the contacts of an inclined surface complementary to the inclined surface of the first part and said second pressure wall integral with the other end of said cylinder section.
- said cylinder section is consisting of a tulip of fingers and the second wall of pressure protrudes into the compression chamber by relative to the first pressure wall, in the closed position of the circuit breaker.
- said second part is requested by a spring supported by its end opposite the contacts on said fixed flange and, preferably, said first part is also stressed by a spring supported by its end opposite the contacts on said fixed flange.
- Figure 1 is a longitudinal sectional view of a circuit breaker according to the invention in the closed position.
- Figure 2 is a longitudinal sectional view of a circuit breaker according to the invention being opened.
- Figure 3 is a longitudinal sectional view of a circuit breaker according to the invention in the open position.
- 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 permanent fixed contact 4 consisting of fingers. The arcing contact and the fixed permanent contact are connected electrically to a first outlet, not represented.
- 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 tube 8 slides on a fixed cylinder 10 comprising an inner annular flange 10A.
- the piston 11 consists of two parts 12, 13, a first part 12 comprising a large pressure wall 12A, called the first pressure wall, and a second part 13 comprising a small wall of pressure 13A, called the second pressure wall, these two adjacent walls forming the pressure wall of the piston 11.
- These two parts 12, 13 are in mutual support one against the other on an inclined surface, in the closed position of the circuit breaker, the first part 12 being in abutment against the second part 13 in the same direction as the opening direction.
- the first part 12 consists of a cylinder 12B sliding on the first tube 7 and provided at its end opposite the contacts of an annular flange 12C intended for come into abutment against the fixed flange 10A in the closed position of the circuit breaker, of said annular pressure wall 12A integral with said cylinder 12B at its other end and with a cylindrical part 12D coaxial with cylinder 12B, integral of the pressure wall 12A by one of its ends and having an inclined surface 12E at its other end.
- This first part 12 is biased by a spring 15 in support at its end opposite the contacts on the flange fixed 10A and slides on tube 7.
- the second part 13 consists of a section of cylinder 13B coaxial with said cylinder and provided with its end opposite to the contacts of an inclined surface 13C complementary to the inclined surface 12E of the first part 12 and said second pressure wall 12A secured to the other end of the cylinder section 13B.
- the cylinder section 13B preferably consists of a arm tulip. This second part 13 is requested by a spring 14 supported by its end opposite to contacts on the fixed flange 10A and slides on the tube 8 and on cylinder 10.
- the angle inclination with respect to the horizontal of the surfaces inclined is less than 30 °.
- the pressure force R exerted by the compressed gas in the compression chamber 18 on the pressure wall 12A of the first part 12 of the piston 11 breaks down on the inclined surface 13C in a horizontal component F reduced collected by the springs 14 and 15.
- the wall of pressure 13A of the second part 13 being small, the effort pressure exerted by the compressed gas in the compression 18 on this pressure wall 13A is reduced and is received by the spring 14.
- the two springs 14 and 15 can therefore be weak positioning springs, much less force than the springs of art anterior to semi-movable one-piece piston.
- the vertical component N on the surface 13C on the other hand is important and tends to press the fingers of the cylindrical section 13B against the fixed cylinder 10 and therefore at block the second part 13 in a fixed position, which immobilizes the piston 11.
- the pressure wall 13A is by elsewhere projecting into the compression chamber 18 by compared to the pressure wall 12A. When the crown 9 reaches the wall 13A, as shown in FIG. 2, it pushes this wall 13A which separates the surfaces inclined 12E and 13C and cancels the vertical component N and the piston 11 as a whole is easily driven in the end of the opening movement.
- the gas is not compressed in the compression chamber 18 during the entire movement of the movable contact assembly. From the moment the piston moves with the movable contact assembly, its pressure wall coming in stop against crown 9, the amount of energy required to operate the moving contact assembly is very reduced because there is no more gas compression.
Landscapes
- Circuit Breakers (AREA)
- Switches With Compound Operations (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Reciprocating Pumps (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
Claims (7)
- Disjoncteur du type à auto-soufflage, comprenant une enveloppe (1) remplie d'un gaz diélectrique sous pression, deux contacts d'arc (3A, 7A) coopérant entre eux, l'un au moins faisant partie d'un ensemble de contact mobile solidaire d'un organe de manoeuvre (6) et adapté pour être déplacé axialement dans l'enveloppe (1) entre une position de fermeture et une position d'ouverture, l'ensemble de contact mobile étant constitué par un premier tube (7) et un second tube (8) coaxial au premier tube pour délimiter, de part et d'autre d'une première couronne (9) reliant le premier et le second tubes, une chambre de soufflage (17) et une chambre de compression (18) communiquant avec la chambre de soufflage (17) et fermée par une paroi de pression d'un piston (11) semi-mobile sollicité par au moins un ressort en appui sur une bride fixe, caractérisé en ce que le piston (11) est constitué de deux parties (12, 13), une première partie (12) comportant une première paroi de pression (12A) et une seconde partie (13) comportant une seconde paroi de pression (13A), de surface frontale inférieure à celle de la première paroi de pression, ces deux parois adjacentes formant la paroi de pression du piston (11) et la première partie (12) étant en appui dans le même sens que le sens d'ouverture contre la seconde partie (13) selon une surface inclinée, en position fermée du disjoncteur.
- Disjoncteur selon la revendication 1, caractérisé en ce que ladite première partie (12) est constituée d'un cylindre (12B) coulissant sur le premier tube (7) et pourvu à son extrémité opposé aux contacts d'une bride annulaire (12C) destinée à venir en butée contre ladite bride fixe (10A) en position fermée du disjoncteur, de ladite paroi de pression (12A) annulaire solidaire dudit cylindre (12B) à son autre extrémité et d'une partie cylindrique (12D) coaxiale audit cylindre (12B), solidaire de ladite paroi de pression (12A) par une de ses extrémités et comportant une surface inclinée (12E) à son autre extrémité.
- Disjoncteur selon la revendication 2, caractérisé en ce que ladite seconde partie (13) est constituée d'un tronçon de cylindre (13B) coaxial audit cylindre et pourvu à son extrémité opposée aux contacts d'une surface inclinée (13C) complémentaire à la surface inclinée (12E) de la première partie (12) et de ladite seconde paroi de pression (12A) solidaire de l'autre extrémité dudit tronçon de cylindre (13B).
- Disjoncteur selon la revendication 3, caractérisé en ce que ledit tronçon de cylindre (13B) est constitué d'une tulipe de doigts.
- Disjoncteur selon l'une des revendications précédentes, caractérisé en ce que la seconde paroi de pression (13A) est en saillie dans la chambre de compression (18) par rapport à la première paroi de pression (12A), en position fermée du disjoncteur.
- Disjoncteur selon l'une des revendications précédentes, caractérisé en ce que ladite seconde partie (13) est sollicitée par un ressort (14) en appui par son extrémité opposée aux contacts sur ladite bride fixe (10A).
- Disjoncteur selon la revendication 6, caractérisé en ce que ladite première partie (12) est sollicitée par un ressort (15) en appui par son extrémité opposée aux contacts sur ladite bride fixe (10A).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9410659A FR2724259B1 (fr) | 1994-09-06 | 1994-09-06 | Disjoncteur a auto-soufflage a piston semi-mobile |
FR9410659 | 1994-09-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0701264A1 EP0701264A1 (fr) | 1996-03-13 |
EP0701264B1 true EP0701264B1 (fr) | 1999-10-20 |
Family
ID=9466725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95401992A Expired - Lifetime EP0701264B1 (fr) | 1994-09-06 | 1995-09-01 | Disjoncteur à auto-soufflage à piston semi-mobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0701264B1 (fr) |
AT (1) | ATE185924T1 (fr) |
DE (1) | DE69512858T2 (fr) |
ES (1) | ES2138168T3 (fr) |
FR (1) | FR2724259B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2756413B1 (fr) * | 1996-11-28 | 1998-12-31 | Gec Alsthom T & D Sa | Disjoncteur a piston semi-mobile |
EP3503152B1 (fr) * | 2017-12-22 | 2020-10-14 | ABB Power Grids Switzerland AG | Disjoncteur haute ou moyenne tension isolé au gaz |
EP3503153B1 (fr) | 2017-12-22 | 2021-09-01 | ABB Power Grids Switzerland AG | Disjoncteur haute ou moyenne tension isolé au gaz |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2014101C2 (de) * | 1970-03-19 | 1982-06-03 | Siemens AG, 1000 Berlin und 8000 München | Hochspannungs-Leistungsschalter |
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. |
-
1994
- 1994-09-06 FR FR9410659A patent/FR2724259B1/fr not_active Expired - Fee Related
-
1995
- 1995-09-01 AT AT95401992T patent/ATE185924T1/de not_active IP Right Cessation
- 1995-09-01 DE DE69512858T patent/DE69512858T2/de not_active Expired - Fee Related
- 1995-09-01 EP EP95401992A patent/EP0701264B1/fr not_active Expired - Lifetime
- 1995-09-01 ES ES95401992T patent/ES2138168T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE185924T1 (de) | 1999-11-15 |
FR2724259A1 (fr) | 1996-03-08 |
DE69512858T2 (de) | 2000-05-04 |
ES2138168T3 (es) | 2000-01-01 |
DE69512858D1 (de) | 1999-11-25 |
EP0701264A1 (fr) | 1996-03-13 |
FR2724259B1 (fr) | 1996-11-22 |
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