EP1612823B1 - Passive cooling device for an electrical apparatus and apparatus having such a device - Google Patents
Passive cooling device for an electrical apparatus and apparatus having such a device Download PDFInfo
- Publication number
- EP1612823B1 EP1612823B1 EP20050105751 EP05105751A EP1612823B1 EP 1612823 B1 EP1612823 B1 EP 1612823B1 EP 20050105751 EP20050105751 EP 20050105751 EP 05105751 A EP05105751 A EP 05105751A EP 1612823 B1 EP1612823 B1 EP 1612823B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- cooling device
- circulation
- circuit breaker
- outlet end
- 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.)
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- 238000001816 cooling Methods 0.000 title claims description 30
- 239000012212 insulator Substances 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 9
- 239000007789 gas Substances 0.000 description 27
- 239000004020 conductor Substances 0.000 description 5
- 239000000112 cooling gas Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
- H01H2009/526—Cooling of switch parts of the high voltage switches
Definitions
- the invention relates to electrical equipment, including generator circuit breakers, contactors and switches.
- a passive cooling device for electrical equipment in particular a generator circuit breaker arranged vertically inside a protective sheath and having an envelope which delimits an interior volume filled with a dielectric gas, apparatus traversing the protective sheath through an aperture such that a surface of the electrical apparatus is exposed outside an upper portion of the sheath, the cooling device including at least one circulation tube having an end of an inlet and an outlet end for natural convection circulation of the cooling gas contained in the interior volume of the electrical apparatus.
- a generator circuit breaker also called a plant circuit breaker
- a plant circuit breaker is located in a busbar between an alternator and a transformer. It is arranged in a protective metal sheath vis-à-vis the outside air. Sufficient space for electrical insulation is provided between the live housings that constitute the poles of the circuit-breaker and the protective sheath which is at the potential of the earth.
- the sheath is filled with a gas, usually dry air, at atmospheric pressure or at a slightly higher pressure.
- the circuit breaker comprises a breaking chamber filled with an insulating gas at a pressure of several bars, this gas being able to circulate between the breaking chamber and the casings of the circuit-breaker.
- the circuit breaker is completely airtight with respect to the duct air. It is connected to the power plant and the network respectively by an incoming conductor and an output conductor, these conductors through the sheath with a dielectric seal.
- a generator circuit breaker with a passive cooling device that has a hollow insulator in the conduit and a first end of which is connected to the circuit breaker upper housing.
- This insulator is arranged substantially vertically to allow insulating gas to circulate by convection between the circuit breaker breaking chamber and the hollow part of the insulator.
- a second end of the insulator is sealingly connected to an opening in the upper part of the metal sheath.
- the cooling device further comprises a cooling circuit outside the sheath that allows the circuit breaker insulating gas to circulate by natural convection to make a loop from the upper casing to the lower casing of the circuit breaker.
- the circuit breaker is in vertical position in the sheath and is supported by a another hollow insulator that rests on a metal support case grounded.
- This support casing has a passage to allow the cooling circuit to communicate with the circuit breaker so that the loop circulation of the insulating gas is possible.
- This cooling device is very satisfactory from the point of view of the cooling efficiency of the breaking chamber. This makes it possible to substantially increase the rated current that the circuit breaker can withstand during operation. However this device is relatively expensive and bulky.
- the invention specifically relates to a passive cooling device that overcomes these disadvantages.
- This device must be more economical to produce, less bulky while allowing sufficiently efficient cooling to allow a significant gain in nominal current.
- the exchange surface between the dielectric gas and the outside air is increased without substantially increasing the size of the apparatus, in particular in height.
- the footprint is reduced.
- the entire device is located on the same side of the outlet sheath so that disassembly of the device is facilitated.
- the inlet end of the circulation tube is located at an altitude greater than that of its outlet end so as to favor the natural convection circulation of the cooling gas in the internal volume of the circulation tube. 'electrical appliance.
- the inlet end of the circulation tube is located at an altitude greater than that of the outlet end of this tube.
- the inlet end and the outlet end of the circulation tube are separated from each other by a separating plate.
- the circulation tube can be mounted on a plate which closes an opening formed in the upper wall of the protective sheath.
- the circulation tube may also be connected to a cooling casing mounted outside the protective sheath.
- the circuit breaker comprises a hollow insulator arranged substantially vertically in the sheath and having a lower end connected to a casing of the circuit breaker and an upper end sealingly connected to the opening formed in the protective sheath.
- the invention also relates to electrical equipment such as a metal sheath generator circuit breaker comprising a passive cooling device according to the invention.
- a single-phase generator circuit breaker 2 is arranged vertically in a protective metal sheath 4 with respect to the air outside.
- the sheath 4 comprises an upper portion 6 constituting a ceiling, this ceiling being preferably removable.
- the circuit breaker 2 is shown in section along a vertical plane containing the axes of the feed conductors 8 and 10 of the circuit breaker, arranged horizontally. It comprises a breaking chamber 12 disposed in an insulating electrical envelope 14 and which separates an upper casing 16 from a lower casing 18 of the circuit breaker while communicating with these casings.
- An insulating gas, for example SF6 enclosed in the circuit breaker can therefore flow freely between the interrupting chamber 12 and the housings 16 and 18.
- a circuit breaker 2 contacting circuit is electrically connected to the incoming conductor 8 or output 10.
- Each housing is energized, for example when the circuit breaker 2 is closed, which imposes a sufficient electrical insulation distance with the protective sheath 4 which is at the potential of the earth.
- a support isolator 20 disposed under the lower casing 18 keeps the circuit breaker in the center of the sheath.
- a carrier insulator is for example made of a ceramic such as porcelain, cylindrical. It has an outer surface forming fins to extend the creepage of the insulator.
- This insulator further comprises a longitudinal recess to allow the passage of an insulating control rod 22 able to manipulate the contacts of the circuit breaker 2 by a translational movement or rotation of the rod.
- the recess of the support insulator 20 communicates with the interior of the lower housing 18. This recess is filled with dielectric gas under pressure.
- the base of the support insulator is generally connected to a control casing outside the sheath (not shown) in an airtight manner. Conventionally, such a control casing contains at least a portion of the control mechanism immersed in the dielectric gas under pressure.
- an insulator 26 also includes a longitudinal recess.
- the upper insulator 26 may be lighter in structure than the carrier insulator 20. It is arranged vertically above the upper casing 16.
- the upper insulator has virtually no supporting role and its structure is designed to withstand the insulating gas overpressure contained in its longitudinal recess by relative to the air of the protective sheath 4.
- the lower end of the insulator 26 is fixed to the upper casing 16 and communicates with the latter so that insulating gas can circulate in the recess of the insulator.
- the upper end of the insulator is sealingly connected to the plate 36.
- cooling means communicating with the internal volume of the circuit breaker 2 by at least one opening formed in the protective sheath are arranged outside the sheath 4.
- these cooling means are constituted by a circulation tube 30.
- the tube 30 has an inlet end 32 and an outlet end 34 which open into the longitudinal recess 27 of the upper insulator 26.
- the ends 32 and 34 through the closure plate 36.
- the inlet end 32 of the circulation tube 30 is located at an altitude greater than that of the outlet end 34.
- figure 2 represents in perspective the circulation tube 30 and the closure plate 36.
- the circulation tube 30 can be arranged in a vertical plane ( figure 3 ) or ( figure 4 ) it can be arranged in an inclined plane so as to reduce the overall height of the circuit breaker.
- the operation is as follows.
- the insulating gas contained in the internal volume of the circuit breaker heats up in the upper casing 16 and rises towards the highest part of the longitudinal recess 27 of the upper insulator 26 in which the inlet end is located. 32 of the circulation tube 30.
- the insulating gas enters the tube 30 in which it circulates in the direction shown by the arrow 38.
- the dielectric gas cools by exchanging heat with the outside air.
- the cooled gas exits the tube 30 through the outlet end 34 and back down to the upper casing 16. Natural convection circulation is thus established in the upper casing 16, the insulator 26 and the tube 30.
- the breaker chamber 12 of the circuit breaker is therefore permanently cooled. effectively, which allows a significant nominal current gain.
- the tube 30 may be provided with fins (not shown) so as to increase its heat exchange surface with the outside.
- fins not shown
- a forced ventilation system for outdoor air can be installed above the protective sheath to accelerate the heat exchange and improve the cooling of the insulating gas.
- the figure 5 is a perspective view of an alternative embodiment.
- Two circulation tubes 30 are mounted on the closure plate 36 so as to increase the flow of the dielectric gas and therefore the efficiency of cooling by natural convection.
- the inlet ends and the outlet ends of each of the tubes 30 are located at the same altitude.
- the shutter plate 36 is equipped with a separator plate 40 whose function is to separate the hot gases from the cold gases.
- a preferred direction of circulation is given by the fact that one side of the circuit breaker heats up more than the other so that the insulating gas accumulates on this side.
- the separator plate makes it possible to maintain this separation and, consequently, favors the establishment and the stability of the natural convection.
- a metal cooling case 42 disposed outside the upper wall 6 of the protective sheath 4 is sealingly connected to the insulator 26.
- the inner volume 43 of the housing 42 communicates with the longitudinal recess 27 of the upper insulator 26 so as to form a space filled with insulating gas and airtight inside or outside the sheath.
- a circulation tube 30 has an inlet end 32 and an outlet end 34 connected to the housing 42.
- the inlet end 32 is located at an altitude greater than that of the outlet end 34 so as to establish, as explained above, a natural convection circulation in the direction of the arrow 38 of the insulating gas contained in the internal volume of the circuit breaker.
- the gas is cooled by heat exchange with the inner surface of the casing 42, then by the circulation in the tube 30. This allows efficient cooling of the interrupting chamber 12 and, consequently, a significant gain in rated current. circuit breaker.
- the tube 30 has an asymmetrical shape that makes it possible to favor a direction of circulation of the dielectric gas (arrow 38).
- This tube can be mounted on a plate 36 such as that shown in FIG. figure 1 or on a housing such as the housing 42 of the figure 6 .
Landscapes
- Gas-Insulated Switchgears (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
L'invention se rapporte aux appareillages électriques, notamment aux disjoncteurs de générateur, aux contacteurs et aux interrupteurs.The invention relates to electrical equipment, including generator circuit breakers, contactors and switches.
Plus précisément, elle concerne un dispositif de refroidissement passif pour un appareillage électrique, notamment un disjoncteur de générateur disposé verticalement à l'intérieur d'une gaine de protection et présentant une enveloppe qui délimite un volume intérieur rempli d'un gaz diélectrique, l'appareil traversant la gaine de protection par une ouverture de sorte qu'une surface de l'appareil électrique est exposée à l'extérieur d'une partie supérieure de la gaine, le dispositif de refroidissement comprenant au moins un tube de circulation ayant une extrémité d'entrée et une extrémité de sortie afin d'assurer une circulation par convexion naturelle du gaz de refroidissement contenu dans le volume intérieur de l'appareil électrique.More specifically, it relates to a passive cooling device for electrical equipment, in particular a generator circuit breaker arranged vertically inside a protective sheath and having an envelope which delimits an interior volume filled with a dielectric gas, apparatus traversing the protective sheath through an aperture such that a surface of the electrical apparatus is exposed outside an upper portion of the sheath, the cooling device including at least one circulation tube having an end of an inlet and an outlet end for natural convection circulation of the cooling gas contained in the interior volume of the electrical apparatus.
De façon classique, un disjoncteur de générateur, également appelé disjoncteur de centrale, est situé dans un jeu de barres entre un alternateur et un transformateur. Il est disposé dans une gaine métallique de protection vis-à-vis de l'air extérieur. Un espace suffisant pour l'isolation électrique est ménagé entre les carters sous tension qui constituent les pôles du disjoncteur et la gaine de protection qui est au potentiel de la terre. La gaine est remplie d'un gaz, généralement de l'air sec, à la pression atmosphérique ou à une pression légèrement supérieure. Le disjoncteur comprend une chambre de coupure remplie d'un gaz isolant à une pression de plusieurs bars, ce gaz pouvant circuler entre la chambre de coupure et les carters du disjoncteur. Le disjoncteur est complètement étanche vis-à-vis de l'air de la gaine. Il est relié à la centrale électrique et au réseau respectivement par un conducteur d'arrivée et par un conducteur de sortie, ces conducteurs traversant la gaine avec une étanchéité diélectrique.Typically, a generator circuit breaker, also called a plant circuit breaker, is located in a busbar between an alternator and a transformer. It is arranged in a protective metal sheath vis-à-vis the outside air. Sufficient space for electrical insulation is provided between the live housings that constitute the poles of the circuit-breaker and the protective sheath which is at the potential of the earth. The sheath is filled with a gas, usually dry air, at atmospheric pressure or at a slightly higher pressure. The circuit breaker comprises a breaking chamber filled with an insulating gas at a pressure of several bars, this gas being able to circulate between the breaking chamber and the casings of the circuit-breaker. The circuit breaker is completely airtight with respect to the duct air. It is connected to the power plant and the network respectively by an incoming conductor and an output conductor, these conductors through the sheath with a dielectric seal.
On connaît déjà (
Ce dispositif de refroidissement est très satisfaisant du point de vue de l'efficacité du refroidissement de la chambre de coupure. Ceci permet d'augmenter sensiblement le courant nominal que peut supporter le disjoncteur en exploitation. Toutefois ce dispositif est relativement coûteux et encombrant.This cooling device is very satisfactory from the point of view of the cooling efficiency of the breaking chamber. This makes it possible to substantially increase the rated current that the circuit breaker can withstand during operation. However this device is relatively expensive and bulky.
L'invention a précisément pour objet un dispositif passif de refroidissement qui remédie à ces inconvénients. Ce dispositif doit être plus économique à réaliser, moins encombrant tout en permettant un refroidissement suffisamment efficace afin de permettre un gain significatif de courant nominal.The invention specifically relates to a passive cooling device that overcomes these disadvantages. This device must be more economical to produce, less bulky while allowing sufficiently efficient cooling to allow a significant gain in nominal current.
Ces buts sont atteints par le fait que l'extrémité d'entrée et l'extrémité de sortie du tube sont raccordées à la surface de l'appareil électrique exposée à l'extérieur de la partie supérieure de la gaine de protection.These objects are achieved by the fact that the inlet end and the outlet end of the tube are connected to the surface of the electrical apparatus exposed outside the upper part of the protective sheath.
Grâce à ces caractéristiques on augmente la surface d'échange entre le gaz diélectrique et l'air extérieur sans augmenter sensiblement l'encombrement de l'appareil, en particulier en hauteur. L'encombrement au sol est réduit. La totalité du dispositif est située d'un même côté de la gaine de sortie de sorte que le démontage de l'appareil est facilité.Thanks to these characteristics, the exchange surface between the dielectric gas and the outside air is increased without substantially increasing the size of the apparatus, in particular in height. The footprint is reduced. The entire device is located on the same side of the outlet sheath so that disassembly of the device is facilitated.
Conformément à un mode de réalisation préféré, l'extrémité d'entrée du tube de circulation est située à une altitude supérieure à celle de son extrémité de sortie de façon à favoriser la circulation par convexion naturelle du gaz de refroidissement dans le volume intérieur de l'appareil électrique.According to a preferred embodiment, the inlet end of the circulation tube is located at an altitude greater than that of its outlet end so as to favor the natural convection circulation of the cooling gas in the internal volume of the circulation tube. 'electrical appliance.
De préférence, l'extrémité d'entrée du tube de circulation est située à une altitude supérieure à celle de l'extrémité de sortie de ce tube.Preferably, the inlet end of the circulation tube is located at an altitude greater than that of the outlet end of this tube.
Grâce à cette caractéristique, on favorise un sens de circulation du gaz diélectrique et, par suite, on augmente l'efficacité de la convexion naturelle.Thanks to this characteristic, a direction of circulation of the dielectric gas is favored and, consequently, the efficiency of the natural convection is increased.
Dans une réalisation particulière, l'extrémité d'entrée et l'extrémité de sortie du tube de circulation sont séparées l'une de l'autre par une plaque séparatrice.In a particular embodiment, the inlet end and the outlet end of the circulation tube are separated from each other by a separating plate.
Le tube de circulation peut être monté sur une plaque qui obture une ouverture formée dans la paroi supérieure de la gaine de protection. Le tube de circulation peut également être raccordé à un carter de refroidissement monté à l'extérieur de la gaine de protection.The circulation tube can be mounted on a plate which closes an opening formed in the upper wall of the protective sheath. The circulation tube may also be connected to a cooling casing mounted outside the protective sheath.
Selon une réalisation particulière, le disjoncteur comporte un isolateur creux disposé sensiblement verticalement dans la gaine et comportant une extrémité inférieure raccordée à un carter du disjoncteur et une extrémité supérieure raccordée de façon étanche à l'ouverture formée dans la gaine de protection.According to a particular embodiment, the circuit breaker comprises a hollow insulator arranged substantially vertically in the sheath and having a lower end connected to a casing of the circuit breaker and an upper end sealingly connected to the opening formed in the protective sheath.
L'invention concerne également un appareillage électrique tel qu'un disjoncteur de générateur sous gaine métallique comportant un dispositif passif de refroidissement selon l'invention.The invention also relates to electrical equipment such as a metal sheath generator circuit breaker comprising a passive cooling device according to the invention.
D'autres caractéristiques et avantages de l'invention apparaîtront encore à la lecture de la description qui suit d'exemples de réalisation donnés à titre illustratif en référence aux figures annexées. Sur ces figures :
- la
figure 1 est une vue d'un mode de réalisation d'un disjoncteur de l'invention ; - la
figure 2 est une vue en perspective d'un tube de circulation monté sur une plaque ; - les
figures 3 et 4 sont deux vues de profil de détail du tube de circulation du disjoncteur de lafigure 1 ; - la
figure 5 est une vue en perspective montrant deux tubes de circulation montés sur une plaque ; - la
figure 6 est une variante de réalisation d'un disjoncteur comportant un carter de refroidissement extérieur ; - la
figure 7 est une vue de détail d'une variante du mode de réalisation de lafigure 6 comportant un tube de circulation présentant une extrémité coudée ; - la
figure 8 est une variante de forme du tube de refroidissement.
- the
figure 1 is a view of an embodiment of a circuit breaker of the invention; - the
figure 2 is a perspective view of a circulation tube mounted on a plate; - the
Figures 3 and 4 are two detailed profile views of the circuit breaker circulation tube of thefigure 1 ; - the
figure 5 is a perspective view showing two circulation tubes mounted on a plate; - the
figure 6 is an alternative embodiment of a circuit breaker having an external cooling casing; - the
figure 7 is a detailed view of a variant of the embodiment of thefigure 6 having a circulation tube having a bent end; - the
figure 8 is a variant form of the cooling tube.
Sur la
Chaque carter est sous tension, par exemple lorsque le disjoncteur 2 est fermé, ce qui impose une distance d'isolation électrique suffisante avec la gaine de protection 4 qui est au potentiel de la terre. A cet effet, un isolateur support 20 disposé sous le carter inférieur 18 permet de maintenir le disjoncteur au centre de la gaine. Comme connu dans l'état de la technique, un tel isolateur support est par exemple constitué d'une céramique telle qu'une porcelaine, de forme cylindrique. Il présente une surface extérieure formant des ailettes pour allonger la ligne de fuite de l'isolateur. Cet isolateur comprend en outre un évidement longitudinal pour permettre le passage d'une tige de commande isolante 22 apte à manoeuvrer les contacts du disjoncteur 2 par un mouvement de translation ou de rotation de la tige.Each housing is energized, for example when the
De façon connue, l'évidement de l'isolateur support 20 communique avec l'intérieur du carter inférieur 18. Cet évidement est donc rempli de gaz diélectrique sous pression. La base de l'isolateur support est généralement raccordée à un carter de commande extérieur à la gaine (non représentée) de façon étanche à l'air. De façon classique, un tel carter de commande renferme au moins une partie du mécanisme de commande immergé dans le gaz diélectrique sous pression.In known manner, the recess of the
A l'extrémité supérieure du disjoncteur, un isolateur 26 comprend également un évidement longitudinal. L'isolateur supérieur 26 peut être de structure plus légère que l'isolateur support 20. Il est disposé verticalement au-dessus du carter supérieur 16. De la même manière que l'isolateur support 20 et l'enveloppe isolante 14, qui présente de préférence une surface externe formant des ailettes pour allonger la ligne de fuite de l'isolateur, l'isolateur supérieur n'a quasiment pas de rôle de support et sa structure est prévue pour résister à la surpression de gaz isolant contenu dans son évidement longitudinal par rapport à l'air de la gaine de protection 4. L'extrémité inférieure de l'isolateur 26 est fixée au carter supérieur 16 et communique avec ce dernier pour que du gaz isolant puisse circuler dans l'évidement de l'isolateur. L'extrémité supérieure de l'isolateur est raccordée de façon étanche à la plaque 36.At the upper end of the circuit breaker, an
Conformément à l'invention, des moyens de refroidissement communiquant avec le volume intérieur du disjoncteur 2 par au moins une ouverture formée dans la gaine de protection sont disposés à l'extérieur de la gaine 4. Dans l'exemple décrit en référence aux
Le fonctionnement est le suivant. Le gaz isolant contenu dans le volume intérieur du disjoncteur s'échauffe dans le carter supérieur 16 et s'élève vers la partie la plus élevée de l'évidement longitudinal 27 de l'isolateur supérieur 26 dans laquelle est située l'extrémité d'entrée 32 du tube de circulation 30. Le gaz isolant pénètre dans le tube 30 dans lequel il circule selon le sens figuré par la flèche 38. Au cours de son passage dans le tube, le gaz diélectrique se refroidit en échangeant de la chaleur avec l'air extérieur. Le gaz refroidi ressort du tube 30 par l'extrémité de sortie 34 et redescend vers le carter supérieur 16. Une circulation par convexion naturelle s'établit ainsi dans le carter supérieur 16, l'isolateur 26 et le tube 30. La chambre de coupure 12 du disjoncteur est donc refroidie en permanence de manière efficace, ce qui permet un gain de courant nominal significatif.The operation is as follows. The insulating gas contained in the internal volume of the circuit breaker heats up in the
Il est entendu que le tube 30 peut être muni d'ailettes (non représentées) de manière à augmenter sa surface d'échange thermique avec l'extérieur. Autres solutions pour augmenter la performance : augmenter le nombre de tubes et/ou les peindre de couleur sombre de manière à augmenter le rayonnement. En outre, un système de ventilation forcée de l'air extérieur peut être installé au-dessus de la gaine de protection pour accélérer l'échange thermique et améliorer le refroidissement du gaz isolant.It is understood that the
La
On a représenté sur la
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Claims (8)
- A passive cooling device for electrical switchgear such as a generator circuit breaker (2), the switchgear being positioned vertically inside a protective cladding (4) and having a casing which defines an interior volume filled with a dielectric gas, the apparatus running through the protective cladding (4) through an opening (28) so that a surface of the electrical apparatus is exposed to the outside of an upper portion of the cladding, the cooling device including at least one circulation tube (30) having an inlet end (32) and an outlet end (34) so as to ensure circulation by natural convection of the dielectric gas contained in the inner volume of the electrical switchgear, characterized in that the inlet end (32) and the outlet end (34) of the tube are connected to the surface of the electrical switchgear exposed to the outside of the upper portion of the protective cladding (4).
- The cooling device according to Claim 1, characterized in that the inlet end (32) of the circulation tube (30) is located at a higher altitude than its outlet end (34) so as to favor circulation by natural convection of the dielectric gas contained in the inner volume of the electrical switchgear.
- The cooling device according to one of Claims 1 or 2, characterized in that the tube (30) has an shape that is asymmetrical with respect to a vertical plane of symmetry of the switchgear so as to favor circulation of the dielectric gas.
- The cooling device according to one of Claims 1 through 3, characterized in that the inlet end (32) and the outlet end (34) of the circulation tube are separated from one another by a separation plate (40).
- The cooling device according to one of Claims 1 through 4, characterized in that the inlet end (32) and the outlet end (34) of the tube (30) are mounted on a plate (36) which plugs the opening (28) formed in the upper wall (6) of the protective cladding (4).
- The device according to one of Claims 1 through 4, characterized in that the inlet end (32) and the outlet end (34) of the tube (30) are connected to a cooling box (42) mounted inside the protective cladding (4).
- The cooling device according to one of Claims 1 through 6, characterized in that the electrical switchgear comprises a hollow insulator (26) positioned substantially vertically in the cladding (4) and comprising a lower end connected to a box (16) of the switchgear and an upper end connected in a leaktight manner to the opening (28) formed in the protective cladding (4).
- An electrical switchgear housed in metal cladding (4) comprising at least one passive cooling device according to one of Claims 1 through 7.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0451356A FR2872336B1 (en) | 2004-06-29 | 2004-06-29 | PASSIVE COOLING DEVICE FOR ELECTRICAL EQUIPMENT AND ELECTRICAL EQUIPMENT COMPRISING SAID DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1612823A1 EP1612823A1 (en) | 2006-01-04 |
EP1612823B1 true EP1612823B1 (en) | 2013-11-13 |
Family
ID=34940242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20050105751 Active EP1612823B1 (en) | 2004-06-29 | 2005-06-28 | Passive cooling device for an electrical apparatus and apparatus having such a device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1612823B1 (en) |
CN (1) | CN100447920C (en) |
FR (1) | FR2872336B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2951856A1 (en) * | 2009-10-26 | 2011-04-29 | Areva T & D Sas | METHOD AND DEVICE FOR COOLING A MEDIUM VOLTAGE ELECTRICAL INSTALLATION UNDER SINK |
FR3029346B1 (en) * | 2014-12-02 | 2018-03-09 | Alstom Technology Ltd | METAL ENVELOPE FOR ELECTRICAL SWITCHING DEVICE |
CN110767482B (en) * | 2019-11-13 | 2022-01-11 | 许继集团有限公司 | Gas-insulated metal-enclosed switch |
US20220416522A1 (en) * | 2020-03-17 | 2022-12-29 | Abb Schweiz Ag | Switchgear assembly and switchgear |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2199182B2 (en) * | 1972-09-08 | 1976-10-29 | Alsthom Cgee | |
DE3666521D1 (en) * | 1985-05-15 | 1989-11-23 | Alsthom | Switch with sulfur hexafluoride operating in a very low temperature environment |
FR2800905B1 (en) * | 1999-11-08 | 2001-11-30 | Alstom | CENTRAL SWITCH WITH A RADIATOR-EXCHANGER |
FR2845819B1 (en) * | 2002-10-14 | 2004-12-24 | Alstom | COOLING DEVICE FOR APPARATUS FOR SHUTDOWN OF CURRENT CURRENT |
FR2846781B1 (en) * | 2002-10-31 | 2004-12-24 | Alstom | POWER CIRCUIT BREAKER COMPRISING A METAL BASE PART OF THE COOLING CIRCUIT |
-
2004
- 2004-06-29 FR FR0451356A patent/FR2872336B1/en not_active Expired - Fee Related
-
2005
- 2005-06-28 EP EP20050105751 patent/EP1612823B1/en active Active
- 2005-06-29 CN CNB2005100810781A patent/CN100447920C/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR2872336A1 (en) | 2005-12-30 |
FR2872336B1 (en) | 2007-07-20 |
CN100447920C (en) | 2008-12-31 |
CN1710680A (en) | 2005-12-21 |
EP1612823A1 (en) | 2006-01-04 |
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