EP1612823A1 - Passive Kühlvorrichtung für ein elektrisches Gerät und elektrisches Gerät mit einer solchen Vorrichtung - Google Patents

Passive Kühlvorrichtung für ein elektrisches Gerät und elektrisches Gerät mit einer solchen Vorrichtung Download PDF

Info

Publication number: EP1612823A1
Authority: EP; European Patent Office
Prior art keywords: tube; cooling device; sheath; circulation; protective sheath
Prior art date: 2004-06-29
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

Application number

EP05105751A

Other languages

English (en)

French (fr)

Other versions

EP1612823B1 (de

Inventor

Joël Ozil

Jean-Marc Willieme

Yves Astic

Denis Frigiere

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

General Electric Technology GmbH

Original Assignee

Areva T&D SAS

Priority date (The priority date 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 date listed.)

2004-06-29

Filing date

2005-06-28

Publication date

2006-01-04

2005-06-28 Application filed by Areva T&D SAS filed Critical Areva T&D SAS

2006-01-04 Publication of EP1612823A1 publication Critical patent/EP1612823A1/de

2013-11-13 Application granted granted Critical

2013-11-13 Publication of EP1612823B1 publication Critical patent/EP1612823B1/de

Status Active legal-status Critical Current

2025-06-28 Anticipated expiration legal-status Critical

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 provided with a passive cooling device which comprises a hollow insulator located in the sheath and a first end is connected to the upper housing of the circuit breaker.
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 interior volume of the '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 vis-à-vis 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 pass through the closure plate 36. It will be observed that the inlet end 32 of the circulation tube 30 is located at an altitude higher than that of the outlet end 34.
FIG. 30 and the shutter plate 36 As can be seen in FIGS. 3 and 4, the circulation tube 30 can be arranged in a vertical plane (FIG. 3) or else (FIG. ns 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.
FIG. 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.
FIG. 6 shows an alternative embodiment of the circuit breaker of FIGS. 1 to 5.
a metal cooling case 42 disposed outside the upper wall 6 of the protective sheath 4, is sealingly connected to the isolator 26.
the interior 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 higher 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 interior 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.
FIG. 7 shows a detail of a variant of an embodiment.
the outlet end 34 of the circulation tube 30 is bent downwards so as to further increase the difference in altitude. with the inlet end 32.
FIG. 8 shows another variant embodiment.
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 may be mounted on a plate 36 such as that shown in Figure 1 or on a housing such as the housing 42 of Figure 6.

Landscapes

Gas-Insulated Switchgears (AREA)
Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

EP20050105751 2004-06-29 2005-06-28 Passive Kühlvorrichtung für ein elektrisches Gerät und elektrisches Gerät mit einer solchen Vorrichtung Active EP1612823B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR0451356A FR2872336B1 (fr)	2004-06-29	2004-06-29	Dispositif de refroidissement passif pour un appareillage electrique et appareillage electrique comprenant ce dispositif

Publications (2)

Publication Number	Publication Date
EP1612823A1 true EP1612823A1 (de)	2006-01-04
EP1612823B1 EP1612823B1 (de)	2013-11-13

Family

ID=34940242

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20050105751 Active EP1612823B1 (de)	2004-06-29	2005-06-28	Passive Kühlvorrichtung für ein elektrisches Gerät und elektrisches Gerät mit einer solchen Vorrichtung

Country Status (3)

Country	Link
EP (1)	EP1612823B1 (de)
CN (1)	CN100447920C (de)
FR (1)	FR2872336B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110767482A (zh) *	2019-11-13	2020-02-07	许继集团有限公司	一种气体绝缘金属封闭开关
CN114556726A (zh) *	2020-03-17	2022-05-27	Abb瑞士股份有限公司	开关设备组件和开关设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2951856A1 (fr) *	2009-10-26	2011-04-29	Areva T & D Sas	Procede et dispositif de refroidissement d'une installation electrique moyenne tension sous gaine
FR3029346B1 (fr) *	2014-12-02	2018-03-09	Alstom Technology Ltd	Enveloppe metallique pour dispositif de commutation electrique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2845819A1 (fr) *	2002-10-14	2004-04-16	Alstom	Dispositif de refroidissement pour appareil de coupure de courant sous gaine
FR2846781A1 (fr) *	2002-10-31	2004-05-07	Alstom	Disjoncteur de puissance comprenant un pied metallique faisant partie du circuit de refroidissement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2199182B2 (de) *	1972-09-08	1976-10-29	Alsthom Cgee
JPH0610949B2 (ja) *	1985-05-15	1994-02-09	アルストム	高電圧用遮断器
FR2800905B1 (fr) *	1999-11-08	2001-11-30	Alstom	Interrupteur de centrale avec un echangeur-radiateur

2004
- 2004-06-29 FR FR0451356A patent/FR2872336B1/fr not_active Expired - Fee Related
2005
- 2005-06-28 EP EP20050105751 patent/EP1612823B1/de active Active
- 2005-06-29 CN CNB2005100810781A patent/CN100447920C/zh active Active

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2845819A1 (fr) *	2002-10-14	2004-04-16	Alstom	Dispositif de refroidissement pour appareil de coupure de courant sous gaine
FR2846781A1 (fr) *	2002-10-31	2004-05-07	Alstom	Disjoncteur de puissance comprenant un pied metallique faisant partie du circuit de refroidissement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110767482A (zh) *	2019-11-13	2020-02-07	许继集团有限公司	一种气体绝缘金属封闭开关
CN110767482B (zh) *	2019-11-13	2022-01-11	许继集团有限公司	一种气体绝缘金属封闭开关
CN114556726A (zh) *	2020-03-17	2022-05-27	Abb瑞士股份有限公司	开关设备组件和开关设备
CN114556726B (zh) *	2020-03-17	2024-07-09	Abb瑞士股份有限公司	开关设备组件和开关设备

Also Published As

Publication number	Publication date
FR2872336A1 (fr)	2005-12-30
EP1612823B1 (de)	2013-11-13
CN100447920C (zh)	2008-12-31
CN1710680A (zh)	2005-12-21
FR2872336B1 (fr)	2007-07-20

Publication	Publication Date	Title
EP0470014A1 (de)	1992-02-05	Elektrischer Lastschalter mit rotierendem Lichtbogen und Selbstbeblasung
EP0538157B1 (de)	1996-04-17	Hybridschalter mit Axialblasspule
EP1115132B1 (de)	2006-08-09	Pol für elektrischen Lastschalter mit Lichtbogenlöschkammer, versehen mit dielektrischen Schirmen
EP1612823B1 (de)	2013-11-13	Passive Kühlvorrichtung für ein elektrisches Gerät und elektrisches Gerät mit einer solchen Vorrichtung
CA2054509C (fr)	2002-01-01	Interrupteur rotatif multipolaire
FR2512267A1 (fr)	1983-03-04	Disjoncteur a gaz comprime muni de resistances d'ouverture et de fermeture
CA2325723A1 (fr)	2001-05-08	Interrupteur de centrale avec echangeur-radiateur
FR2461349A1 (fr)	1981-01-30	Chambre de coupure perfectionnee pour disjoncteur basse tension multipolaire a boitier moule
EP3182538B1 (de)	2021-02-03	Kühlvorrichtung für heisse gase in einem hochspannungsgerät
EP2417680B1 (de)	2017-06-07	Elektrischer leiter mit verbesserter kühlung und elektrisches gerät in einem versiegelten gehäuse, das mindestens einen solchen leiter umfasst
EP0458236B1 (de)	1995-01-04	Mittelspannungsschalter
EP3230997A1 (de)	2017-10-18	Elektrische hochspannungsschutzschaltervorrichtung mit optimierter automatischer löschung
WO2012055923A1 (fr)	2012-05-03	Appareillage electrique sous enveloppe metallique comportant au moins un capot pare-effluve assurant des echanges convectifs
EP0415098A1 (de)	1991-03-06	Selbstblasschalter für Mittelspannung
CA2286416C (fr)	2006-12-12	Montage de resistance de fermeture pour appareillage electrique a haute tension
FR2525807A1 (fr)	1983-10-28	Disjoncteur avec transformateur de courant incorpore
CA1273043A (fr)	1990-08-21	Disjoncteur a haute tension a gaz dielectrique a resistance de fermeture
FR2735914A1 (fr)	1996-12-27	Equipement de distribution a moyenne tension
EP0644567B1 (de)	1999-07-28	Gasisolierter Hochspannungsschalter mit rotierendem Lichtbogen
FR2815185A1 (fr)	2002-04-12	Ligne polyphasee a isolation gazeuse et module de raccordement pour un passage polyophase/monophase dans une telle ligne
FR2558301A1 (fr)	1985-07-19	Sectionneur de poste blinde a haute tension equipe d'ecrans para-effluves perfores
EP1018756A2 (de)	2000-07-12	Mittle oder Hochspannungsschaltvorrichtung
FR2846781A1 (fr)	2004-05-07	Disjoncteur de puissance comprenant un pied metallique faisant partie du circuit de refroidissement
FR2751462A1 (fr)	1998-01-23	Disjoncteur a haute tension a auto-soufflage d'arc
CH143143A (fr)	1930-10-31	Interrupteur électrique.

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