EP0734035B1 - Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant - Google Patents
Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant Download PDFInfo
- Publication number
- EP0734035B1 EP0734035B1 EP19960103750 EP96103750A EP0734035B1 EP 0734035 B1 EP0734035 B1 EP 0734035B1 EP 19960103750 EP19960103750 EP 19960103750 EP 96103750 A EP96103750 A EP 96103750A EP 0734035 B1 EP0734035 B1 EP 0734035B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arcing contact
- circuit breaker
- self
- coil
- arc
- 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
- H01H33/982—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 in which the pressure-generating arc is rotated by a magnetic field
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
-
- 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
- H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted
Definitions
- Such a circuit breaker is known from document EP-A-0 240 397.
- the object of the invention is to improve the breaking of a self-expanding circuit breaker, regardless of the intensity of the current to be interrupted.
- the circuit breaker according to the invention is characterized in that the breaking chamber contains in addition a cooling member arranged inside the coil to cool the gases hot in the vicinity of the fixed arcing contact, said cooling member being formed by a metal radiator subject to fixed arcing contact.
- the radiator is attached to the internal wall of a tubular sleeve separated from the coil by an insulating coating, said sleeve being made of magnetic material to strengthen the magnetic field in the area of arc formation.
- the presence of the radiator inside the coil limits any stagnation hot gas near the fixed arcing contact.
- the radiator is equipped with a plurality of fins to optimize the heat exchange surface with the current supply socket at the coil.
- a breaking chamber 10 of an autoexpansion and arc circuit breaker rotating is housed inside a sealed envelope (not shown) filled with gas insulator, with high dielectric strength, in particular sulfur hexafluoride.
- the breaking chamber 10 contains a fixed annular arcing contact 12 mounted on the side internal of the front end face 14 of an electromagnetic coil 16.
- the face rear 18 of the cylindrical coil 16 is electrically connected to a socket 20 current supply conductor passing through sealing the upper wall 22 of the chamber 10.
- An insulating coating 24 is interposed radially between the side wall internal of the coil 16, and a tubular sleeve 26 of magnetic material, intended to strengthen the magnetic field in the arc formation area.
- the fixed arcing contact 12 is formed by an annular track cooperating by abutment with a movable arcing contact 28 carried by the upper end of a tubular sleeve 30 in conductive material.
- a compression spring 32 is coaxially associated with the end lower of the sleeve 30, which is additionally equipped with a control lug 34 likely to be driven in translation by a sliding contact 36 subject to a tube 38 mobile driver.
- the movable tube 38 passes through a sealing hole 40 formed in an insulator 42 for closing the chamber 10.
- the interior of the interrupting chamber 10 communicates with the volume of expansion of the casing of the circuit breaker through an exhaust channel 43 delimited by the hollow sleeve 30, so as to generate a gas flow in the event pressure increase caused by the rotation of the arc.
- the cooling member 44 preferably metallic, is shaped as radiator 46 attached in thermal contact with the internal cylindrical wall of the sleeve 26, and bearing on the fixed arcing contact 12.
- the radiator 46 is advantageously equipped 48 annular fins to optimize the heat exchange surface with the gaseous medium surrounding.
- the presence of the radiator 46 inside the coil 16 limits any stagnation of gas hot near the fixed arcing contact 12, i.e. in the first part of the arc formation which is not traversed by the gas flow.
- the arc is extinguished normally by the gas flow established through the tubular sleeve 30 of support of the movable arcing contact 28, constituting the second part of the formation zone arc.
- the efficient cooling of the hot gases in the vicinity of the fixed arcing contact 12 contributes to improve the arc extinction and obtain excellent dielectric strength, avoiding any possibility of re-plating at zero current crossing.
- Such an arrangement of the radiator 46 is particularly effective for breaking the currents low intensities.
- the gas flow through the tubular movable arcing contact 28 can be improved by incorporating a nozzle with convergent / divergent inside the sleeve 30.
- the radiator of the cooling member 44 inside the coil 16 may well heard in various forms, as defined in the revendications.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Description
- un contact d'arc fixe annulaire associé à une bobine électromagnétique de mise en rotation de l'arc, ladite bobine cylindrique étant agencée coaxialement autour du contact d'arc fixe,
- un contact d'arc mobile creux coopérant avec le contact d'arc fixe de manière à occuper une position de fermeture, et une position d'ouverture,
- et un canal d'échappement disposé entre le contact d'arc mobile creux, et l'enveloppe du disjoncteur.
Claims (4)
- Disjoncteur à autoexpansion et à arc tournant logé à l'intérieur d'une enveloppe étanche remplie de gaz isolant à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre, ladite enveloppe renfermant une chambre de coupure (10) comportant :un contact d'arc fixe (12) annulaire associé à une bobine (16) électromagnétique de mise en rotation de l'arc, ladite bobine cylindrique étant agencée coaxialement autour du contact d'arc fixe (12),un contact d'arc mobile (28) creux coopérant avec le contact d'arc fixe (12) de manière à occuper une position de fermeture, et une position d'ouverture,et un canal (43) d'échappement disposé entre le contact d'arc mobile (28) creux, et l'enveloppe du disjoncteur,
- Disjoncteur à autoexpansion selon la revendication 1, caractérisé en ce que le radiateur (46) est accolé à la paroi interne d'un manchon (26) tubulaire séparé de la bobine (16) par un revêtement (24) isolant, ledit manchon (22) étant réalisé en matériau magnétique pour renforcer le champ magnétique dans la zone de formation de l'arc.
- Disjoncteur à autoexpansion selon la revendication 1 ou 2, caractérisé en ce que le radiateur (46) est équipé d'une pluralité d'ailettes (48) pour optimiser la surface d'échange thermique avec le milieu gazeux environnant.
- Disjoncteur à autoexpansion selon la revendication 1 ou 2, caractérisé en ce que le contact d'arc fixe (12) est formé par une piste annulaire située sur le bord interne de la face frontale (14) de la bobine (16), et que le contact d'arc mobile (28) est sollicité par un ressort (32) en aboutement contre le contact d'arc fixe (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9503569A FR2732157B1 (fr) | 1995-03-22 | 1995-03-22 | Disjoncteur a gaz equipe d'une chambre a autoexpansion et a arc tournant |
FR9503569 | 1995-03-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0734035A1 EP0734035A1 (fr) | 1996-09-25 |
EP0734035B1 true EP0734035B1 (fr) | 2001-08-29 |
Family
ID=9477450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960103750 Expired - Lifetime EP0734035B1 (fr) | 1995-03-22 | 1996-03-10 | Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0734035B1 (fr) |
CN (1) | CN1068962C (fr) |
DE (1) | DE69614738T2 (fr) |
ES (1) | ES2161933T3 (fr) |
FR (1) | FR2732157B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2774213B1 (fr) * | 1998-01-27 | 2000-03-10 | Schneider Electric Ind Sa | Chambre de coupure d'un disjoncteur a auto-expansion et a enveloppe a resine thermoplastique |
DE10221576B4 (de) * | 2002-05-08 | 2006-06-01 | Siemens Ag | Elektrisches Schaltgerät mit einer Kühleinrichtung |
EP1675145A1 (fr) * | 2004-12-23 | 2006-06-28 | ABB Technology AG | Disjoncteur à haute puissance avec joint contre les gaz d'arc |
ATE389943T1 (de) * | 2004-12-24 | 2008-04-15 | Abb Technology Ag | Generatorschalter mit verbesserter schaltleistung |
CN102543553A (zh) * | 2011-12-09 | 2012-07-04 | 沈阳工业大学 | Sf6断路器旋磁压气式灭弧室结构 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE906236C (de) * | 1943-08-10 | 1954-03-11 | Voigt & Haeffner Ag | Hochspannungsschalter |
JPS57170233U (fr) * | 1981-04-20 | 1982-10-26 | ||
FR2596578B1 (fr) * | 1986-03-28 | 1994-05-06 | Merlin Et Gerin | Disjoncteur electrique a autoexpansion et a arc tournant |
CN2055987U (zh) * | 1989-01-03 | 1990-04-11 | 航空航天工业部国营燎原机械厂 | 户内高压真空断路器 |
FR2977170B1 (fr) * | 2011-06-29 | 2013-08-09 | Cie Engrenages Et Reducteurs Messian Durand | Dispositif d'entrainement pour broyeur, et broyeur correspondant |
-
1995
- 1995-03-22 FR FR9503569A patent/FR2732157B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-10 EP EP19960103750 patent/EP0734035B1/fr not_active Expired - Lifetime
- 1996-03-10 ES ES96103750T patent/ES2161933T3/es not_active Expired - Lifetime
- 1996-03-10 DE DE1996614738 patent/DE69614738T2/de not_active Expired - Fee Related
- 1996-03-22 CN CN96105955A patent/CN1068962C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2161933T3 (es) | 2001-12-16 |
EP0734035A1 (fr) | 1996-09-25 |
FR2732157B1 (fr) | 1997-05-09 |
CN1138207A (zh) | 1996-12-18 |
FR2732157A1 (fr) | 1996-09-27 |
DE69614738T2 (de) | 2002-07-04 |
CN1068962C (zh) | 2001-07-25 |
DE69614738D1 (de) | 2001-10-04 |
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