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 purpose Download PDF

Info

Publication number
EP0374062A3
EP0374062A3 EP89420493A EP89420493A EP0374062A3 EP 0374062 A3 EP0374062 A3 EP 0374062A3 EP 89420493 A EP89420493 A EP 89420493A EP 89420493 A EP89420493 A EP 89420493A EP 0374062 A3 EP0374062 A3 EP 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 Quebec filed Critical Hydro Quebec
Priority to AT89420493T priority Critical patent/ATE73921T1/en
Publication of EP0374062A2 publication Critical patent/EP0374062A2/en
Publication of EP0374062A3 publication Critical patent/EP0374062A3/en
Application granted granted Critical
Publication of EP0374062B1 publication Critical patent/EP0374062B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/046—Microwave drying of wood, ink, food, ceramic, sintering of ceramic, clothes, hair

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Drying Of Solid Materials (AREA)
  • Insulating Bodies (AREA)
  • Paper (AREA)

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.
EP89420493A 1988-12-15 1989-12-14 Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purpose Expired - Lifetime EP0374062B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420493T ATE73921T1 (en) 1988-12-15 1989-12-14 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 Number Priority Date Filing Date Title
US284732 1988-12-15
US07/284,732 US4889965A (en) 1988-12-15 1988-12-15 Microwave drying of the paper insulation of high voltage electrotechnical equipments

Publications (3)

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

Family

ID=23091319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420493A Expired - Lifetime EP0374062B1 (en) 1988-12-15 1989-12-14 Process and apparatus for drying the paper insulation of a high-tension electrotechnical device, and microwave energy applicator for this purpose

Country Status (8)

Country Link
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 number Priority date Publication date Assignee Title
SE9002117L (en) * 1990-06-14 1991-08-26 Nils Elander MICROWAVE DEVICE FOR TREATMENT OF PRECESSIVE LIQUID
US5262610A (en) * 1991-03-29 1993-11-16 The United States Of America As Represented By The Air Force Low particulate reliability enhanced remote microwave plasma discharge device
GB9309202D0 (en) * 1993-05-05 1993-06-16 Apv Corp Ltd Microwave ovens
US5423260A (en) * 1993-09-22 1995-06-13 Rockwell International Corporation Device for heating a printed web for a printing press
US6244056B1 (en) 1995-09-20 2001-06-12 Sun Microsystems, Inc. Controlled production of ammonia and other gases
US5873258A (en) * 1995-09-20 1999-02-23 Sun Microsystems, Inc Sorption refrigeration appliance
US5916259A (en) 1995-09-20 1999-06-29 Sun Microsystems, Inc. Coaxial waveguide applicator for an electromagnetic wave-activated sorption system
AU707643B2 (en) * 1995-09-20 1999-07-15 Sun Microsystems, Inc. Absorbent pair refrigeration system
US5842356A (en) * 1995-09-20 1998-12-01 Sun Microsystems, Inc. Electromagnetic wave-activated sorption refrigeration system
US5855119A (en) 1995-09-20 1999-01-05 Sun Microsystems, Inc. Method and apparatus for cooling electrical components
US5869817A (en) * 1997-03-06 1999-02-09 General Mills, Inc. Tunable cavity microwave applicator
US7003979B1 (en) 2000-03-13 2006-02-28 Sun Microsystems, Inc. Method and apparatus for making a sorber
US6630654B2 (en) * 2001-10-19 2003-10-07 Personal Chemistry I Uppsala Ab Microwave heating apparatus
WO2007046085A2 (en) * 2005-10-19 2007-04-26 Clear Wave Ltd. Microwave oven window
ES2342958B2 (en) * 2008-09-03 2011-07-04 Emite Ingenieria Slne ANALYZER OF MULTIPLE INPUTS AND MULTIPLE OUTPUTS.
CN111854375A (en) * 2020-07-27 2020-10-30 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 number Priority date Publication date Assignee Title
DE867670C (en) * 1950-11-30 1953-02-19 Siemens Ag Device for vacuum treatment, in particular drying
US2740756A (en) * 1951-04-19 1956-04-03 Albert G Thomas Electrical drying system
DE1278948B (en) * 1965-01-26 1968-09-26 Licentia Gmbh Vacuum drying process for porous drying goods
US3430351A (en) * 1966-06-14 1969-03-04 Asea Ab Method of drying objects such as electrical machines and electrical insulating material
FR2448699A1 (en) * 1979-02-06 1980-09-05 Ciba Geigy Ag PROCESS FOR DRYING A CONTINUOUS WEB OF MATERIAL BY MICROWAVE AND APPARATUS FOR CARRYING OUT SAID METHOD
DE3630567A1 (en) * 1986-09-09 1988-03-10 Kurt Dipl Ing Zeppenfeld Cyclone pressure filter with microwave dryer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452176A (en) * 1967-05-24 1969-06-24 Melvin L Levinson Heating a moving conductor by electromagnetic wave irradiation in the microwave region
US3590202A (en) * 1970-02-24 1971-06-29 Bechtel Corp Construction for tuning microwave heating applicator
US3887722A (en) * 1973-08-31 1975-06-03 United Aircraft Corp Method for producing a plurality of filaments in a radio frequency reactor
US4259560A (en) * 1977-09-21 1981-03-31 Rhodes George W Process for drying coal and other conductive materials using microwaves
SE417780B (en) * 1980-01-22 1981-04-06 Por Microtrans Ab DIELECTRIC HEATING DEVICE
FR2584258B1 (en) * 1985-06-28 1995-04-14 Elf Aquitaine METHOD AND DEVICE FOR THE HEAT TREATMENT OF A CONDUCTIVE ELEMENT AT LEAST PARTIALLY CONSISTING OF A CONDUCTIVE MATERIAL
US4771156A (en) * 1986-10-20 1988-09-13 Micro Dry Incorporated Method and apparatus for heating and drying moist articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE867670C (en) * 1950-11-30 1953-02-19 Siemens Ag Device for vacuum treatment, in particular drying
US2740756A (en) * 1951-04-19 1956-04-03 Albert G Thomas Electrical drying system
DE1278948B (en) * 1965-01-26 1968-09-26 Licentia Gmbh Vacuum drying process for porous drying goods
US3430351A (en) * 1966-06-14 1969-03-04 Asea Ab Method of drying objects such as electrical machines and electrical insulating material
FR2448699A1 (en) * 1979-02-06 1980-09-05 Ciba Geigy Ag PROCESS FOR DRYING A CONTINUOUS WEB OF MATERIAL BY MICROWAVE AND APPARATUS FOR CARRYING OUT SAID METHOD
DE3630567A1 (en) * 1986-09-09 1988-03-10 Kurt Dipl Ing Zeppenfeld Cyclone pressure filter with microwave dryer

Also Published As

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

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