EP0932177A1 - Chambre de coupure d'un disjoncteur à auto-expansion, et à enveloppe interne à résine thermoplastique - Google Patents
Chambre de coupure d'un disjoncteur à auto-expansion, et à enveloppe interne à résine thermoplastique Download PDFInfo
- Publication number
- EP0932177A1 EP0932177A1 EP98410149A EP98410149A EP0932177A1 EP 0932177 A1 EP0932177 A1 EP 0932177A1 EP 98410149 A EP98410149 A EP 98410149A EP 98410149 A EP98410149 A EP 98410149A EP 0932177 A1 EP0932177 A1 EP 0932177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shells
- cut
- envelope
- chamber according
- 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.)
- Granted
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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/185—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- the appearance of the arc during separation of contacts causes a rapid rise in pressure of the sulfur hexafluoride gas SF6 contained inside the envelope, with the formation of a gas flow at through the tubular channel of the movable contact.
- the internal volume of the envelope, and the diameter of the communication channel are calculated to obtain a gas flow optimum allowing rapid extinction of the arc.
- the insulating jacket is generally produced by means of a thermosetting resin, for example based epoxy resin, preferably with fillers or reinforcements in the form of particles or free, and hardening agents.
- the nature of the resin, and the weight composition must meet specific behavioral requirements SF6 gas in the presence of an arc.
- the envelope must in particular resist the influence arc and SF6 decomposition products to avoid deterioration or premature wear.
- thermosetting resin envelope The manufacture of a thermosetting resin envelope is carried out by pouring the resin and fillers mixture.
- the cost of such a molding operation is very high
- the object of the invention is to provide a breaking chamber for a circuit breaker self-expanding, using an insulating jacket having a reduced manufacturing cost.
- the interrupting chamber according to the invention is characterized in that the device for protection is formed by two plastic screens, and that means of link cooperate with the opposite ends of the two screens (100, 102) to ensure their centering with respect to the longitudinal axis of the envelope (12), and improve the mechanical rigidity of the coupling, said connecting means comprising a centering element (104) in the form of a frame (106) arranged inside the casing (12) in the median plane of the interface between the half-shells (12A, 12B).
- the thermoplastic resin of the half-shells is based on polycarbonate.
- the protective screen is formed by a plate of polytetrafluoroethylene PTFE previously cut and folded.
- the frame of the element centering is made of rigid plastic, and has a pair of grooves positioning of the two screens.
- the polytetrafluoroethylene plate of the screen has a uniform thickness chosen between 0.5 mm and 3 mm, and has a base connected to four side surfaces by fold lines.
- the base of the plate is provided with a circular hole for the operation of the screen on a boss formed on the bottom half shells.
- a breaking chamber 10 for a pole of a high circuit breaker tension of the autoexpansion type comprises a casing 12 of insulating material, and filled with a gas with high dielectric strength, in particular hexafluoride sulfur SF6.
- the internal volume of the interrupting chamber 10 contains a contact tubular mobile 14 cooperating with a fixed contact device 16 associated with a electromagnetic coil 18 for rotating the arc.
- the mobile contact 14 is disposed at the end of an elongated tube 20 of conductive material, which is capable of sliding tightly through one of the bottoms 22 of the casing 12 insulating.
- the outer end of the tube 20 is coupled to a control mechanism (not shown) intended to move the movable contact 14 between a position of closure (Figure 1) and an open position ( Figure 2).
- the fixed contact device 16 is extended by a form conductive stud 24 cylindrical crossing the opposite bottom 26 in the longitudinal direction of the casing 12, and connected to the outside by the connection pad 28 of the pole.
- the hollow tube 20 allows the switching chamber 10 to communicate with the outer volume of the casing 12 as soon as the contacts 14, 16 are separated for authorize gas self-expansion.
- the insulating casing 12 is formed by the abutment of two half-shells 12A, 12B each made by molding from a polymer resin, having good mechanical resistance.
- the electromagnetic coil 18 used for extinguishing the arc comprises a axial stack of conductive copper turns joined against each other, and electrically connected in series by means of fixing screws 30 with interposition insulating material inserts.
- the front face of the coil 18 is provided with a arc migration track 32, said annular track 32 having a diameter internal slightly greater than the diameter of the movable contact 14.
- the spire posterior to the opposite of the front face is connected to the conductive pad 24 by support arms 34 constituting copper spacers which are separated from the contact device fixed internal 16 by insulating plates 36.
- Two steel washers 38, 40 are fixed by screws 30 on the rear face of the coil 18, after interposition of insulating washers 41.
- the fixed contact device 16 of the autoexpansion circuit breaker has three fingers contact in the form of circular sectors, distributed circumferentially for constitute a hollow cylindrical contact.
- the internal diameter of this hollow contact substantially corresponds to the outside diameter of the movable contact 14, so that allow telescopic sliding, respectively at the start of the race opening, and at the end of closing stroke of the movable contact 14.
- the two shells 12A, 12B of square sections of the envelope 12 are produced at using a thermoplastic resin, in particular based on polycarbonate.
- a protective screen 100, 102 made of plastic resistant to heat.
- the screen 100, 102 is preferably formed by a plate of polytetrafluoroethylene PTFE, previously cut and folded to present a form combined with the section of the shells 12A, 12B.
- a centering element 104 is used to the end-to-end assembly of the two screens 100, 102 inside the envelope 12.
- the centering element 104 consists of a frame 106 of rigid plastic material square section, with two positioning grooves 108, 110, staggered on along both sides of the periphery of the frame 106.
- the section of the frame 106 is less than the square section of the envelope 12.
- the plate 111 of polytetrafluoroethylene PTFE of each screen protective 100, 102 has a uniform thickness of the order of 1 mm, and has a base 112 of square section, to which four surfaces are connected side 114, 116, 118, 120 by fold lines 122.
- the base 112 of the plate 111 precut is provided with a circular orifice 124 allowing to weigh the screen 100, 102 on a boss 126, 128 (FIG. 1) provided on the internal faces of the funds 22, 26 of envelope 12.
- the first is introduced screen 100, the base 112 of which rests on the bottom 22.
- the boss 126 then penetrates in the orifice 124, and ensures the axial positioning of the screen 100.
- the four lateral surfaces 114, 116, 118, 120 of the screen 100 extend along the faces interns delimiting the square section of the half-shell 12A.
- the two screens 100, 102 are interconnected by means of the centering element 104 disposed inside the interrupting chamber 10 in the median plane of the interface between the two half-shells 12A, 12B in the abutting position. Then just fix permanently the two half-shells 12A, 12B by assembly screws (not shown) to form effective continuous protection on all sides internal of the switching chamber 10.
- the presence of the centering frame 106 allows in addition to stiffening the connection between the two screens 100, 102.
- the thickness of the plate 111 of polytetrafluoroethylene PTFE can also be adapted to the breaking capacity of the circuit breaker, and be between 0.5 mm and 3 mm.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
- des contacts séparables,
- un dispositif d'extinction d'arc par autoexpansion du gaz après mise en rotation de l'arc sous l'effet d'un champ magnétique engendré par une bobine électromagnétique,
- des moyens de communication de la chambre avec l'extérieur de l'enveloppe lors de la phase d'autoexpansion après séparation des contacts,
- l'enveloppe isolante étant formée par l'assemblage bout à bout de deux demicoquilles réalisées par moulage d'une résine thermoplastique,
- et un dispositif de protection en matière plastique rapporté sur la face interne de l'enveloppe pour la protéger contre les effets de l'arc, le matériau plastique du dispositif de protection ayant une tenue thermique supérieure à celle de la résine thermoplastique des demi-coquilles.
- la figure 1 est une vue en coupe de la chambre de coupure équipée de l'enveloppe selon l'invention ;
- la figure 2 est une vue en perspective du cadre de centrage des écrans de protection ;
- la figure 3 est une vue en élévation du cadre de la figure 2 ;
- la figure 4 est une vue en coupe selon la ligne 4-4 de la figure 3 ;
- la figure 5 montre une plaque découpée de polytétrafluoréthylène pour constituer un écran de protection ;
- la figure 6 est une vue en coupe selon la ligne 6-6 de la figure 5 ;
- la figure 7 est une vue de détail, à échelle agrandie de la figure 6, représentant les lignes de pliage de la plaque.
Claims (7)
- Chambre de coupure peur un disjoncteur à haute tension, logée dans une enveloppe (12) remplie de gaz à rigidité diélectrique élevée, et renfermant :des contacts séparables (14, 16),un dispositif d'extinction d'arc par autoexpansion du gaz après mise en rotation de l'arc sous l'effet d'un champ magnétique engendré par une bobine électromagnétique (18),des moyens de communication de la chambre (10) avec l'extérieur de l'enveloppe (12) lors de la phase d'autoexpansion après séparation des contacts (14, 16),l'enveloppe (12) isolante étant formée par l'assemblage bout à bout de deux demi-coquilles (12A, 12B) réalisées par moulage d'une résine thermoplastique,et un dispositif de protection en matière plastique rapporté sur la face interne de l'enveloppe (12) peur la protéger contre les effets de l'arc, le matériau plastique du dispositif de protection ayant une tenue thermique supérieure à celle de la résine thermoplastique des demi-coquilles (12A, 12B),
caractérisée en ce que le dispositif de protection est formé par deux écrans (100, 102) en matière plastique, et que des moyens de liaison coopèrent avec les extrémités en regard des deux écrans (100, 102) pour assurer leur centrage par rapport à l'axe longitudinal de l'enveloppe (12), et améliorer la rigidité mécanique de l'accouplement, lesdits moyens de liaison comportant un élément de centrage (104) en forme de cadre (106) disposé à l'intérieur de l'enveloppe (12) dans le plan médian de l'interface entre les demi-coquilles (12A, 12B). - Chambre de coupure selon la revendication 1, caractérisée en ce que la résine thermoplastique des demi-coquilles (12A, 12B) est à base de polycarbonate.
- Chambre de coupure selon la revendication 1 ou 2, caractérisée en ce que l'écran de protection (100, 102) est formé par une plaque (111) de polytétrafluoréthylène PTFE préalablement découpée et pliée.
- Chambre de coupure selon l'une des revendications 1 à 3, caractérisée en ce que le cadre ( 106) possède une forme conjuguée à celle de l'enveloppe (12).
- Chambre de coupure selon la revendication 4, caractérisée en ce que le cadre (106) de l'élément de centrage (104) est en matière plastique rigide, et comporte une paire de rainures (108, 110) de positionnement des deux écrans (100,102).
- Chambre de coupure selon la revendication 3, caractérisée en ce que la plaque (111) de polytétrafluoréthylène de l'écran (100, 102) possède une épaisseur uniforme choisie entre 0,5 mm et 3 mm, et comporte une base (112) reliée à quatre surfaces latérales (114, 116, 118, 120) par des lignes de pliage (122).
- Chambre de coupure selon la revendication 6, caractérisée en ce que la base (112) de la plaque (111) est munie d'un orifice (124) circulaire pour le fonctionnement de l'écran (100, 102) sur un bossage (126, 128) ménagé sur le fond (22, 26) des demi-coquilles (12A, 12B).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9801104 | 1998-01-27 | ||
FR9801104A FR2774213B1 (fr) | 1998-01-27 | 1998-01-27 | Chambre de coupure d'un disjoncteur a auto-expansion et a enveloppe a resine thermoplastique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0932177A1 true EP0932177A1 (fr) | 1999-07-28 |
EP0932177B1 EP0932177B1 (fr) | 2006-03-01 |
Family
ID=9522423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980410149 Expired - Lifetime EP0932177B1 (fr) | 1998-01-27 | 1998-12-15 | Chambre de coupure d'un disjoncteur à auto-expansion, et à enveloppe interne à résine thermoplastique |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0932177B1 (fr) |
CN (1) | CN1094639C (fr) |
AU (1) | AU738593B2 (fr) |
BR (1) | BR9900175B1 (fr) |
DE (1) | DE69833639T2 (fr) |
EA (1) | EA001489B1 (fr) |
ES (1) | ES2259203T3 (fr) |
FR (1) | FR2774213B1 (fr) |
ID (1) | ID21805A (fr) |
NO (1) | NO316005B1 (fr) |
TW (1) | TW418413B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005101438A2 (fr) * | 2004-04-07 | 2005-10-27 | Areva T & D Sa | Appareil electrique a gaz isolant sous pression comprenant un isolateur composite muni d'une fenetre d'observation des contacts |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2509223T3 (es) | 2010-05-31 | 2014-10-17 | Ormazabal Y Cia., S.L.U. | Interruptor de corte en gas |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4431886A (en) * | 1981-08-12 | 1984-02-14 | Northern Engineering Industries Plc | Circuit-breaker |
US4697055A (en) * | 1984-06-08 | 1987-09-29 | Merlin Gerin | Arc extinction device for gas insulation electrical switchgear |
US5166483A (en) * | 1990-06-14 | 1992-11-24 | Merlin Gerin | Electrical circuit breaker with rotating arc and self-extinguishing expansion |
EP0734035A1 (fr) * | 1995-03-22 | 1996-09-25 | Schneider Electric Sa | Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant |
EP0768692A1 (fr) * | 1995-10-16 | 1997-04-16 | Schneider Electric Sa | Dispositif électrique à gaz isolant et à autoexpansion |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1007486A (en) * | 1960-06-28 | 1965-10-13 | English Electric Co Ltd | Improvements in or relating to electric switchgear |
GB1022291A (en) * | 1961-03-22 | 1966-03-09 | English Electric Co Ltd | Improvements in or relating to gas-blast electric circuit-breakers |
RU2064703C1 (ru) * | 1995-01-25 | 1996-07-27 | Товарищество с ограниченной ответственностью "КАНПАК" | Вакуумная дугогасительная камера |
-
1998
- 1998-01-27 FR FR9801104A patent/FR2774213B1/fr not_active Expired - Fee Related
- 1998-12-15 EP EP19980410149 patent/EP0932177B1/fr not_active Expired - Lifetime
- 1998-12-15 DE DE69833639T patent/DE69833639T2/de not_active Expired - Lifetime
- 1998-12-15 ES ES98410149T patent/ES2259203T3/es not_active Expired - Lifetime
- 1998-12-22 TW TW87121395A patent/TW418413B/zh not_active IP Right Cessation
-
1999
- 1999-01-07 ID IDP990010Q patent/ID21805A/id unknown
- 1999-01-19 CN CN 99101319 patent/CN1094639C/zh not_active Expired - Fee Related
- 1999-01-25 AU AU13229/99A patent/AU738593B2/en not_active Ceased
- 1999-01-26 EA EA199900062A patent/EA001489B1/ru not_active IP Right Cessation
- 1999-01-27 BR BR9900175A patent/BR9900175B1/pt not_active IP Right Cessation
- 1999-01-27 NO NO19990380A patent/NO316005B1/no not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4431886A (en) * | 1981-08-12 | 1984-02-14 | Northern Engineering Industries Plc | Circuit-breaker |
US4697055A (en) * | 1984-06-08 | 1987-09-29 | Merlin Gerin | Arc extinction device for gas insulation electrical switchgear |
US5166483A (en) * | 1990-06-14 | 1992-11-24 | Merlin Gerin | Electrical circuit breaker with rotating arc and self-extinguishing expansion |
EP0734035A1 (fr) * | 1995-03-22 | 1996-09-25 | Schneider Electric Sa | Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant |
EP0768692A1 (fr) * | 1995-10-16 | 1997-04-16 | Schneider Electric Sa | Dispositif électrique à gaz isolant et à autoexpansion |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005101438A2 (fr) * | 2004-04-07 | 2005-10-27 | Areva T & D Sa | Appareil electrique a gaz isolant sous pression comprenant un isolateur composite muni d'une fenetre d'observation des contacts |
WO2005101438A3 (fr) * | 2004-04-07 | 2006-01-19 | Areva T & D Sa | Appareil electrique a gaz isolant sous pression comprenant un isolateur composite muni d'une fenetre d'observation des contacts |
US7989726B2 (en) | 2004-04-07 | 2011-08-02 | Areva T & D Sa | Electrical device containing insulating gas under pressure and including a composite insulator provided with a window for observing contacts |
Also Published As
Publication number | Publication date |
---|---|
CN1094639C (zh) | 2002-11-20 |
EA199900062A3 (ru) | 1999-12-29 |
BR9900175A (pt) | 2000-01-04 |
TW418413B (en) | 2001-01-11 |
AU738593B2 (en) | 2001-09-20 |
EA001489B1 (ru) | 2001-04-23 |
BR9900175B1 (pt) | 2010-12-14 |
NO990380L (no) | 1999-07-28 |
EA199900062A2 (ru) | 1999-08-26 |
DE69833639T2 (de) | 2006-11-09 |
NO316005B1 (no) | 2003-11-24 |
DE69833639D1 (de) | 2006-04-27 |
ID21805A (id) | 1999-07-29 |
ES2259203T3 (es) | 2006-09-16 |
EP0932177B1 (fr) | 2006-03-01 |
NO990380D0 (no) | 1999-01-27 |
FR2774213A1 (fr) | 1999-07-30 |
FR2774213B1 (fr) | 2000-03-10 |
AU1322999A (en) | 1999-08-19 |
CN1224903A (zh) | 1999-08-04 |
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