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EP0374062A3 - Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purpose - Google Patents

Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purposeDownload PDF

Info

Publication number
EP0374062A3
EP0374062A3EP89420493AEP89420493AEP0374062A3EP 0374062 A3EP0374062 A3EP 0374062A3EP 89420493 AEP89420493 AEP 89420493AEP 89420493 AEP89420493 AEP 89420493AEP 0374062 A3EP0374062 A3EP 0374062A3
Authority
EP
European Patent Office
Prior art keywords
insulation
tension
drying
transmission line
electrotechnical
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
Application number
EP89420493A
Other languages
French (fr)
Other versions
EP0374062A2 (en
EP0374062B1 (en
Inventor
Pierre Gervais
Michel Duval
Marcel Giroux
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.)
Hydro Quebec
Original Assignee
Hydro Quebec
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.)
Filing date
Publication date
Application filed by Hydro QuebecfiledCriticalHydro Quebec
Priority to AT89420493TpriorityCriticalpatent/ATE73921T1/en
Publication of EP0374062A2publicationCriticalpatent/EP0374062A2/en
Publication of EP0374062A3publicationCriticalpatent/EP0374062A3/en
Application grantedgrantedCritical
Publication of EP0374062B1publicationCriticalpatent/EP0374062B1/en
Anticipated expirationlegal-statusCritical
Expired - Lifetimelegal-statusCriticalCurrent

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Abstract

The water and microwave permeable dielectric insulation in an electrotechnical high voltage equipment is dried by means of microwaves. The electrotechnical equipment has a central conductor on which the insulation is wrapped, and it is disposed within an electrically conducting hollow cylinder with its central conductor coaxial with the latter cylinder to form a coaxial, microwave transmission line. Microwaves are propagated through the coaxial transmission line to heat the water in the dielectric insulation, to transform it into water vapor, and to thereby dry the insulation. The microwave transmission line is air-tight and the water vapor is evacuated through a vacuum pump or cold trap.
EP89420493A1988-12-151989-12-14Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purposeExpired - LifetimeEP0374062B1 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
AT89420493TATE73921T1 (en)1988-12-151989-12-14 METHOD AND DEVICE FOR DRYING THE PAPER INSULATION OF A HIGH VOLTAGE ELECTRICAL APPARATUS AND MICROWAVE ENERGY APPLICATION DEVICE FOR THAT PURPOSE.

Applications Claiming Priority (2)

Application NumberPriority DateFiling DateTitle
US2847321988-12-15
US07/284,732US4889965A (en)1988-12-151988-12-15Microwave drying of the paper insulation of high voltage electrotechnical equipments

Publications (3)

Publication NumberPublication Date
EP0374062A2 EP0374062A2 (en)1990-06-20
EP0374062A3true EP0374062A3 (en)1990-08-08
EP0374062B1 EP0374062B1 (en)1992-03-18

Family

ID=23091319

Family Applications (1)

Application NumberTitlePriority DateFiling Date
EP89420493AExpired - LifetimeEP0374062B1 (en)1988-12-151989-12-14Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purpose

Country Status (8)

CountryLink
US (1)US4889965A (en)
EP (1)EP0374062B1 (en)
JP (1)JPH0610939B2 (en)
AT (1)ATE73921T1 (en)
CA (1)CA1317643C (en)
DE (1)DE68901033D1 (en)
ES (1)ES2030999T3 (en)
GR (1)GR3004093T3 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
SE9002117L (en)*1990-06-141991-08-26Nils Elander MICROWAVE DEVICE FOR TREATMENT OF PRECESSIVE LIQUID
US5262610A (en)*1991-03-291993-11-16The United States Of America As Represented By The Air ForceLow particulate reliability enhanced remote microwave plasma discharge device
GB9309202D0 (en)*1993-05-051993-06-16Apv Corp LtdMicrowave ovens
US5423260A (en)*1993-09-221995-06-13Rockwell International CorporationDevice for heating a printed web for a printing press
AU707643B2 (en)*1995-09-201999-07-15Sun Microsystems, Inc.Absorbent pair refrigeration system
US5842356A (en)*1995-09-201998-12-01Sun Microsystems, Inc.Electromagnetic wave-activated sorption refrigeration system
US5855119A (en)1995-09-201999-01-05Sun Microsystems, Inc.Method and apparatus for cooling electrical components
US6244056B1 (en)1995-09-202001-06-12Sun Microsystems, Inc.Controlled production of ammonia and other gases
US5916259A (en)1995-09-201999-06-29Sun Microsystems, Inc.Coaxial waveguide applicator for an electromagnetic wave-activated sorption system
US5873258A (en)*1995-09-201999-02-23Sun Microsystems, IncSorption refrigeration appliance
US5869817A (en)*1997-03-061999-02-09General Mills, Inc.Tunable cavity microwave applicator
US7003979B1 (en)2000-03-132006-02-28Sun Microsystems, Inc.Method and apparatus for making a sorber
US6630654B2 (en)*2001-10-192003-10-07Personal Chemistry I Uppsala AbMicrowave heating apparatus
WO2007046085A2 (en)*2005-10-192007-04-26Clear Wave Ltd.Microwave oven window
ES2342958B2 (en)*2008-09-032011-07-04Emite Ingenieria Slne ANALYZER OF MULTIPLE INPUTS AND MULTIPLE OUTPUTS.
CN111854375A (en)*2020-07-272020-10-30北京金辉景新节能科技有限公司Vacuum microwave dewatering equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
DE867670C (en)*1950-11-301953-02-19Siemens Ag Device for vacuum treatment, in particular drying
US2740756A (en)*1951-04-191956-04-03Albert G ThomasElectrical drying system
DE1278948B (en)*1965-01-261968-09-26Licentia Gmbh Vacuum drying process for porous drying goods
US3430351A (en)*1966-06-141969-03-04Asea AbMethod of drying objects such as electrical machines and electrical insulating material
FR2448699A1 (en)*1979-02-061980-09-05Ciba Geigy Ag PROCESS FOR DRYING A CONTINUOUS WEB OF MATERIAL BY MICROWAVE AND APPARATUS FOR CARRYING OUT SAID METHOD
DE3630567A1 (en)*1986-09-091988-03-10Kurt Dipl Ing ZeppenfeldCyclone pressure filter with microwave dryer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US3452176A (en)*1967-05-241969-06-24Melvin L LevinsonHeating a moving conductor by electromagnetic wave irradiation in the microwave region
US3590202A (en)*1970-02-241971-06-29Bechtel CorpConstruction for tuning microwave heating applicator
US3887722A (en)*1973-08-311975-06-03United Aircraft CorpMethod for producing a plurality of filaments in a radio frequency reactor
US4259560A (en)*1977-09-211981-03-31Rhodes George WProcess for drying coal and other conductive materials using microwaves
SE417780B (en)*1980-01-221981-04-06Por Microtrans Ab DIELECTRIC HEATING DEVICE
FR2584258B1 (en)*1985-06-281995-04-14Elf Aquitaine METHOD AND DEVICE FOR THE HEAT TREATMENT OF A CONDUCTIVE ELEMENT AT LEAST PARTIALLY CONSISTING OF A CONDUCTIVE MATERIAL
US4771156A (en)*1986-10-201988-09-13Micro Dry IncorporatedMethod and apparatus for heating and drying moist articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
DE867670C (en)*1950-11-301953-02-19Siemens Ag Device for vacuum treatment, in particular drying
US2740756A (en)*1951-04-191956-04-03Albert G ThomasElectrical drying system
DE1278948B (en)*1965-01-261968-09-26Licentia Gmbh Vacuum drying process for porous drying goods
US3430351A (en)*1966-06-141969-03-04Asea AbMethod of drying objects such as electrical machines and electrical insulating material
FR2448699A1 (en)*1979-02-061980-09-05Ciba Geigy Ag PROCESS FOR DRYING A CONTINUOUS WEB OF MATERIAL BY MICROWAVE AND APPARATUS FOR CARRYING OUT SAID METHOD
DE3630567A1 (en)*1986-09-091988-03-10Kurt Dipl Ing ZeppenfeldCyclone pressure filter with microwave dryer

Also Published As

Publication numberPublication date
ES2030999T3 (en)1992-11-16
EP0374062A2 (en)1990-06-20
JPH0610939B2 (en)1994-02-09
ATE73921T1 (en)1992-04-15
CA1317643C (en)1993-05-11
EP0374062B1 (en)1992-03-18
US4889965A (en)1989-12-26
GR3004093T3 (en)1993-03-31
JPH02201824A (en)1990-08-10
DE68901033D1 (en)1992-04-23

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