NO115590B - - Google Patents
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- Publication number
- NO115590B NO115590B NO161225A NO16122564A NO115590B NO 115590 B NO115590 B NO 115590B NO 161225 A NO161225 A NO 161225A NO 16122564 A NO16122564 A NO 16122564A NO 115590 B NO115590 B NO 115590B
- Authority
- NO
- Norway
- Prior art keywords
- electrical
- insulation
- cellulose
- winding
- cellulosic
- Prior art date
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- 238000004804 winding Methods 0.000 claims description 24
- 229920002678 cellulose Polymers 0.000 claims description 20
- 239000001913 cellulose Substances 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 6
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 4
- RAIPHJJURHTUIC-UHFFFAOYSA-N 1,3-thiazol-2-amine Chemical compound NC1=NC=CS1 RAIPHJJURHTUIC-UHFFFAOYSA-N 0.000 claims description 3
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 claims description 3
- QPQKUYVSJWQSDY-UHFFFAOYSA-N 4-phenyldiazenylaniline Chemical compound C1=CC(N)=CC=C1N=NC1=CC=CC=C1 QPQKUYVSJWQSDY-UHFFFAOYSA-N 0.000 claims description 3
- YSKUZVBSHIWEFK-UHFFFAOYSA-N ammelide Chemical compound NC1=NC(O)=NC(O)=N1 YSKUZVBSHIWEFK-UHFFFAOYSA-N 0.000 claims description 3
- JPICKYUTICNNNJ-UHFFFAOYSA-N anthrarufin Chemical compound O=C1C2=C(O)C=CC=C2C(=O)C2=C1C=CC=C2O JPICKYUTICNNNJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000002320 enamel (paints) Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003209 petroleum derivative Substances 0.000 claims description 2
- YTAILAZJMHRYOR-UHFFFAOYSA-N 1,3-dimorpholin-4-ylpropan-2-ol Chemical compound C1COCCN1CC(O)CN1CCOCC1 YTAILAZJMHRYOR-UHFFFAOYSA-N 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 17
- 239000000123 paper Substances 0.000 description 9
- 210000003298 dental enamel Anatomy 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 6
- 239000012774 insulation material Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 4
- 239000002655 kraft paper Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- RYHBHLBNLIPXBB-UHFFFAOYSA-N 1,1-dimorpholin-4-ylpropan-2-ol Chemical compound CC(O)C(N1CCOCC1)N1CCOCC1 RYHBHLBNLIPXBB-UHFFFAOYSA-N 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- QHPQWRBYOIRBIT-UHFFFAOYSA-N 4-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C=C1 QHPQWRBYOIRBIT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/185—Substances or derivates of cellulose
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Insulating Of Coils (AREA)
- Paper (AREA)
Description
Elektrisk apparatur. Electrical equipment.
Foreliggende oppfinnelse angår elektrisk apparatur som omfatter stabilisert celluloseholdig isolasj onsmateriale som har sterkt forbedret termisk stabilitet og elektriske isolasj onsegenska-per. The present invention relates to electrical equipment which comprises stabilized cellulose-containing insulation material which has greatly improved thermal stability and electrical insulation properties.
Celluloseholdig materiale, slik som papir, bomullstøy, bomullsbånd, pressplater og tre er lenge blitt anvendt for mange formål. En anvendelse har vært i den elektriske industri som isolasjon for forskjellige typer elektrisk apparatur. Slike materialer utgjør en ønsket kilde for elektrisk isolasjon på grunn av de økono-miske fordeler som oppnås med disse like overfor tilgjengelige typer isolasjon. Dessuten har celluloseholdig isolasjon gode fysikalske egenskaper, generelt talt, og tilfredsstillende opprinnelig dielektrisk styrke! Cellulosic material, such as paper, cotton cloth, cotton tape, press plates and wood have long been used for many purposes. One application has been in the electrical industry as insulation for various types of electrical equipment. Such materials constitute a desired source of electrical insulation because of the economic advantages obtained with them over other available types of insulation. Also, cellulosic insulation has good physical properties, generally speaking, and satisfactory initial dielectric strength!
Celluloseholdig materiale ødelegges imidlertid hurtig ved temperaturer som stiger over 100° C når det er i kontakt med luft eller i kontakt med flytende dielektrika, slike som anvendes i elektriske transformatorer, f. eks. olje, hvor oksydasjonsproduktene omfatter syrer som vil angripe det celluloseholdige materiale.'Både de fysikalske og elektriske egenskaper påvirkes ved denne ødeleggelse med det resultat at isolasjonen gradvis taper sin elektriske isolasj onsstyrke og dets mekaniske styrke ødelegges hurtig. However, cellulose-containing material is quickly destroyed at temperatures that rise above 100° C when it is in contact with air or in contact with liquid dielectrics, such as are used in electrical transformers, e.g. oil, where the oxidation products include acids that will attack the cellulosic material.'Both the physical and electrical properties are affected by this destruction, with the result that the insulation gradually loses its electrical insulating strength and its mechanical strength is rapidly destroyed.
De elektriske og fysikalske egenskaper før celluloseholdig materiale, slik som papir, bom-ullstøy, bomullsbånd, pressplater og tre ødelegges ved økende hastighet når temperaturen økes over 100° C, enten det utsettes for luft eller i kontakt med flytende dielektrisk blanding. Etter således å ha vært neddyppet bare i noen få uker i raffinert petroleum transformatorolj e ved 120 The electrical and physical properties of cellulosic material, such as paper, boom-wool noise, cotton tape, press plates and wood are destroyed at increasing speed when the temperature is increased above 100° C, whether exposed to air or in contact with liquid dielectric mixture. After thus having been immersed for only a few weeks in refined petroleum transformer oil at 120
—150 9 C, vil papir praktisk talt ikke ha tilbake noe av sin opprinnelige strekkstyrke. Generelt kan en lengde av friskt kraftpapir for elektrisk formål bøyes eller foldes flere hundre ganger -150 9 C, paper will practically not have any of its original tensile strength back. In general, a length of fresh kraft paper for electrical purposes can be bent or folded several hundred times
før det vil brytes istykker. Imidlertid vil det, etter bare en ukes neddypning i transformator-olje ved 120—150° C, ødelegges eller gå istykker ved dobbeltbretting en gang. before it will break into pieces. However, after only a week's immersion in transformer oil at 120-150°C, it will be destroyed or broken by double folding once.
Denne ødeleggelse i fysikalske egenskaper ledsages av tilsvarende reduksj on i elektriske isolasj onsegenskaper. Av disse grunner er det blitt spesifisert i industrien at i elektriske appara-turer som anvender celluloseholdig isolasjon, må temperaturene for kontinuerlig drift ikke over-skride ca. 105° C. This destruction in physical properties is accompanied by a corresponding reduction in electrical insulation properties. For these reasons, it has been specified in the industry that in electrical equipment that uses cellulose-containing insulation, the temperatures for continuous operation must not exceed approx. 105°C.
Det er nå blitt funnet at det er visse forbindelser som i høy grad forbedrer celluloseholdig isolasjons termiske stabilitet og gir dets dielektriske egenskaper en vesentlig øket varighet ved temperaturer på opp til 140° C, og endog høyere. Forbedringene i disse egenskaper er ikke bare synlig i nærvær av flytende dielektrika, men oppnås også når isolasjonen anvendes i en at-mosfære av luft eller annen gass. It has now been found that there are certain compounds which greatly improve the thermal stability of cellulosic insulation and give its dielectric properties a significantly increased duration at temperatures of up to 140° C, and even higher. The improvements in these properties are not only visible in the presence of liquid dielectrics, but are also achieved when the insulation is used in an atmosphere of air or other gas.
Følgelig er hovedhensikten med foreliggende oppfinnelse å skaffe stabilisert celluloseholdig elektrisk isolasjon, som karaktériseres både ved forbedret termisk stabilitet og ved forbedret dielektrisk integritet. Accordingly, the main purpose of the present invention is to provide stabilized cellulosic electrical insulation, which is characterized both by improved thermal stability and by improved dielectric integrity.
Hensikten med foreliggende oppfinnelse blir således å tilveiebringe en elektrisk apparatur som ved kontinuerlig drift kan tillates å arbeide ved en høyere temperatur enn tidligere foreskre-vet, ved at det nyttes en stabilisert celluloseholdig elektrisk isolasjon som angitt i patenthaverens norske patent nr. 110 741, og som karakte-riseres både ved forbedret termisk stabilitet og ved forbedret dielektrisk integritet. The purpose of the present invention is thus to provide an electrical apparatus which, during continuous operation, can be allowed to work at a higher temperature than previously prescribed, by using a stabilized cellulose-containing electrical insulation as stated in the patent holder's Norwegian patent no. 110 741, and which is characterized both by improved thermal stability and by improved dielectric integrity.
Oppfinnelsen angår således elektrisk apparatur omfattende i kombinasjon en beholder, en elektrisk ledervikling anbragt inne i et hus og forsynt med et hardt, seigt fleksibelt emaljebelegg som motstår mykgj øring ved temperaturer opptil 250° C, et flytende dielektrikum bestående i det vesentlige av en petroleum-hydrokarbon-olje i den nevnte beholder, hvilken omgir i det minste en del av den nevnte elektriske ledningsvikling, og et celluloseholdig elektrisk isolasjonsmateriale i forbindelse med nevnte elektriske ledningsvikling, i hvilket isolasjonsmateriale det for øket stabilitet og. motstandsevne mot termisk ødeleggelse når det er i kontakt med et flytende dielektrisk impregneringsmiddel, er ensartet fordelt fra 0,02—10, fortrinnsvis 0,05—5 vekt-% beregnet på vekten av de celluloseholdige fibre i materialet, av minst en stabiliseringsforbindelse, og hvor det karakteristiske er at forbindelsen er 1,5-dihydroksyantrakinon, p-fenylazoanilin, ammelid, 1—3 dimorfolino-2-propanol, triallylcyanurat, 2-aminotiazol, piperidin, polyvinylpyrrolidon eller piperazin. Det elektriske isola-sjonsmaterialet som i det vesentlige er fullstendig gjennomtrengt av det flytende dielektrikum er anbragt omkring viklingen. Det nevnte flytende dielektrikum som inneholdes i det nevnte elektriske apparat, inneholder en oksydasjonsinhibitor. The invention thus relates to electrical apparatus comprising in combination a container, an electrical conductor winding placed inside a housing and provided with a hard, tough flexible enamel coating which resists softening at temperatures up to 250° C, a liquid dielectric consisting essentially of a petroleum hydrocarbon oil in the said container, which surrounds at least a part of the said electric wire winding, and a cellulose-containing electrical insulation material in connection with the said electrical wire winding, in which insulation material there is increased stability and. resistance to thermal destruction when in contact with a liquid dielectric impregnating agent, is uniformly distributed from 0.02-10, preferably 0.05-5% by weight calculated on the weight of the cellulosic fibers in the material, of at least one stabilizing compound, and where the characteristic is that the compound is 1,5-dihydroxyanthraquinone, p-phenylazoaniline, ammelide, 1-3 dimorpholino-2-propanol, triallyl cyanurate, 2-aminothiazole, piperidine, polyvinylpyrrolidone or piperazine. The electrical insulating material which is essentially completely permeated by the liquid dielectric is arranged around the winding. The aforementioned liquid dielectric contained in the aforementioned electrical apparatus contains an oxidation inhibitor.
For at oppfinnelsen lett skal kunne forstås vises til tegningen hvori:.fig. 1 er et perspektivriss, delvis i snitt, av en transformatorkj erne som er isolert med den nye celluloseholdige isolasjon ifølge patenthaverens ovennevnte patent. In order for the invention to be easily understood, reference is made to the drawing in which:.fig. 1 is a perspective view, partly in section, of a transformer core which is insulated with the new cellulose-containing insulation according to the patentee's above-mentioned patent.
Fig. 2 er et oppriss delvis i snitt av en transformator, og Fig. 2 is an elevation, partially in section, of a transformer, and
fig. 3 er et oppriss delvis i tverrsnitt, som fig. 3 is an elevation partially in cross-section, which
viser en isolert kabel.shows an insulated cable.
I elektrisk apparatur som erkarakterisert vedat det nyttes et celluloseholdig isolasjonsmateriale som angitt i patenthaverens patent nr. 110 741, er det nå mulig å øke den elektriske ap-paraturs driftstemperatur ved at en i høy grad kan øke bibeholdelsen av både dielektrisk styrke og mekanisk styrke for celluloseholdig isolasjon ved forhøyde temperaturer ved i hele isolasjonen å fordele praktisk talt ensartet effektive mengder av visse kjemisk stabiliserende blandinger. De mengder av forbindelsene som skal anvendes, kan være små, men disse små mengder gir en i høy grad gunstig stabiliseringsvirkning for den elektriske isolasjon. De kjemiske forbindelser som er blitt funnet å gi disse forbedringer er 1,5-dihydroksyantrakinon, og nitrogenholdige forbindelser p-fenylazoanilin, ammelid, 1—3 di-morfolino-2-propanol, triallylcyanurat, 2-aminotiazol, piperidin, polyvinylpyrrolidon og piperazin. To eller flere av disse forbindelser kan anvendes samtidig for stabilisering av cellulose. In electrical equipment which is characterized by the use of a cellulose-containing insulation material as stated in the patent holder's patent no. 110 741, it is now possible to increase the operating temperature of the electrical equipment by greatly increasing the retention of both dielectric strength and mechanical strength for cellulosic insulation at elevated temperatures by distributing practically uniformly effective amounts of certain chemical stabilizing compounds throughout the insulation. The amounts of the compounds to be used can be small, but these small amounts provide a highly favorable stabilizing effect for the electrical insulation. The chemical compounds which have been found to give these improvements are 1,5-dihydroxyanthraquinone, and nitrogenous compounds p-phenylazoaniline, ammelide, 1-3 di-morpholino-2-propanol, triallyl cyanurate, 2-aminothiazole, piperidine, polyvinylpyrrolidone and piperazine. Two or more of these compounds can be used simultaneously to stabilize cellulose.
For anvendelse av de ovennevnte stabiliserende forbindelser i celluloseholdig isolasjonsmateriale samt framstilling åv celluloseholdig isolasjonsmateriale og spesielt celluloseholdig isolasjonsmateriale i arkform hvori de stabiliserende forbindelser er inkorporert, vises til patenthaverens ovennevnte patent. For the use of the above-mentioned stabilizing compounds in cellulose-containing insulation material as well as the production of cellulose-containing insulation material and especially cellulose-containing insulation material in sheet form in which the stabilizing compounds are incorporated, reference is made to the patentee's above-mentioned patent.
Som et illustrerende eksempel på anvendel-sen av et stabilisert celluloseholdig isolasjonsmateriale ifølge ovennevnte patent i et elektrisk apparat, vikles en transformator på en måte som er vist på fig. 1, idet det anvendes papir behandlet ifølge nevnte patent og inneholdende 3 vekts-% av en eller flere av stabiliserings-midlene som er beskrevet deri. As an illustrative example of the use of a stabilized cellulosic insulating material according to the above-mentioned patent in an electrical apparatus, a transformer is wound in a manner shown in fig. 1, using paper treated according to said patent and containing 3% by weight of one or more of the stabilizers described therein.
På fig. 1 betyr 10 det behandlende kraftpapir som vikles omkring de enkelte viklinger og som er viklet mellom høy- og lavspennings-viklingene på transformatoren. Transformator - viklingen omfatter således låvspenningsviklinger 14 og 16, samt høyspenningsviklinger 18, 20 og In fig. 1 means 10 the treating kraft paper which is wound around the individual windings and which is wound between the high and low voltage windings on the transformer. The transformer winding thus comprises low-voltage windings 14 and 16, as well as high-voltage windings 18, 20 and
22, isolert av lag-på-lag anvendelse av det behandlede papir. I tillegg er lavspenningsviklin-gen 14 isolert fra den behandlede vinning-mot-vinning ved isolasjon 24. De elektriske ledere som anvendes kan omfatte emaljert tråd som motstår mykning ved temperaturer på opp til 250° C. Egnede emaljer er epoksyharpiks-emaljer, poly-ester-harpiks-emaljer, slik som isoftalat-glykol-maleat-harpikser, silikonmodifiserte emaljer og polyvinyl-formal-fenoliske harpiksemaljer. Således kan emaljer anvendes direkte på toppen av tråden, eller kan anvendes med asbest eller glass-fiberpakning eller annet fiberholdig materiale. I den ferdige transformator vil et flytende dielektrikum, slik som olje eller klorert aromatisk dielektrikum, fylle kanalene 26 og vil samtidig fullstendig trenge gjennom papirisolasjonen. Etter å være viklet og satt sammen, behandles hele enheten i vakuum for å fjerne luft og fuktighet fra papiret, og viklingen blir deretter brent for å 22, isolated by layer-by-layer application of the treated paper. In addition, the low-voltage winding 14 is isolated from the treated turn-to-turn by insulation 24. The electrical conductors used may comprise enamelled wire which resists softening at temperatures of up to 250° C. Suitable enamels are epoxy resin enamels, poly- ester-resin enamels, such as isophthalate-glycol-maleate resins, silicone-modified enamels and polyvinyl-formal-phenolic resin enamels. Thus, enamels can be used directly on top of the wire, or can be used with asbestos or glass fiber packing or other fibrous material. In the finished transformer, a liquid dielectric, such as oil or chlorinated aromatic dielectric, will fill the channels 26 and will at the same time completely penetrate the paper insulation. After being wound and assembled, the entire assembly is vacuum-treated to remove air and moisture from the paper, and the winding is then fired to
eliminere fullstendig ethvert spor av fuktighet. completely eliminate any trace of moisture.
På fig. 2 er vist en transformator fremstilt ifølge foreliggende oppfinnelse. Transformatoren omfatter en tank 28 som holder en holder 30 og innvendig på denne anbragt magnetisk kjerne 32 og en vikling 34. Viklingen 34 omfatter en høy-spennings vikling 36 og lav-spennings vikling 38, hver isolert med en tråd-emaljeblanding som motstår mykgj øring ved temperaturer opptil 250° C. Vindingene for viklingene 36 og 38 er isolert ved pakninger omfattende stabilisert celluloseholdig isolasjon som nevnt i ovennevnte patent. Viklingene er også isolert fra hverandre ved hjelp av stabilisert celluloseholdig isolasjon 40, framstilt ifølge nevnte patent, hvilket omfatter papir, bomull eller annen celluloseholdig isolasjon. En ytre celluloseholdig pakning 42 av tøy eller papir kan påføres viklingen 34. I noen tilfeller kan det anvendes pressplater, tre eller papp avstandsholdere eller forskjellige andre celluloseholdige produkter på de elektriske viklinger. Det er anbragt et flytende dielektrikum 44 inne i tanken 28 for å dekke kjernen 32 og en vikling 43 for å isolere dem og skaffe avløp for den varme som fremstilles ved drift av transformatoren. Det behandlede celluloseholdige materiale ifølge ovennevnte patent bi-holder sine dielektriske egenskaper og mekaniske styrke når det er i kontakt med et flytende dielektrikum som inneholder en liten mengde av en oksydasjonsinhibitor, slik som p-tert.-butyl-fenol. In fig. 2 shows a transformer manufactured according to the present invention. The transformer comprises a tank 28 which holds a holder 30 and internally placed on this magnetic core 32 and a winding 34. The winding 34 comprises a high-voltage winding 36 and low-voltage winding 38, each insulated with a wire-enamel compound which resists softening at temperatures up to 250° C. The windings for the windings 36 and 38 are insulated by gaskets comprising stabilized cellulose-containing insulation as mentioned in the above-mentioned patent. The windings are also insulated from each other by means of stabilized cellulose-containing insulation 40, manufactured according to the aforementioned patent, which includes paper, cotton or other cellulose-containing insulation. An outer cellulose-containing packing 42 of cloth or paper can be applied to the winding 34. In some cases, pressure plates, wooden or cardboard spacers or various other cellulose-containing products can be used on the electrical windings. A liquid dielectric 44 is placed inside the tank 28 to cover the core 32 and a winding 43 to insulate them and provide drainage for the heat produced during operation of the transformer. The treated cellulosic material according to the above-mentioned patent retains its dielectric properties and mechanical strength when in contact with a liquid dielectric containing a small amount of an oxidation inhibitor, such as p-tert-butyl-phenol.
På fig. 3 vises en elektrisk ledende kabel omfattende en elektrisk leder 50, hvorpå det er pakket celluloseholdig isolasjon 52, og en ytre metallisk strømpe 54. Celluloseisolasjonen 52 er stabilisert materiale som er blitt behandlet ifølge nevnte patent. In fig. 3 shows an electrically conductive cable comprising an electrical conductor 50, on which cellulose-containing insulation 52 is packed, and an outer metallic stocking 54. The cellulose insulation 52 is stabilized material which has been treated according to the aforementioned patent.
Det skal bemerkes med hensyn til anvendel- It should be noted with regard to applicability
sen av det stabiliserte celluloseholdige isolasjonsmateriale ifølge ovennevnte patent for transformatorer at transformatorkonstruksjonen kan være mere fast og tettere på grunn av at de be- <-handlede celluloseholdige avstandsholdere og andre bestanddeler vil tape mindre enn halvpar-ten av det tykkelsestap som fås ved termisk ald-ring av ubehandlet pressplate, kraftpapir eller annet celluloseholdig materiale. of the stabilized cellulosic insulating material according to the above-mentioned patent for transformers that the transformer construction can be firmer and tighter due to the fact that the treated cellulosic spacers and other components will lose less than half of the thickness loss obtained by thermal aging ring of untreated pressboard, kraft paper or other cellulose-containing material.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US319174A US3324222A (en) | 1963-10-28 | 1963-10-28 | Treated cellulosic material and electrical apparatus embodying the same |
Publications (1)
Publication Number | Publication Date |
---|---|
NO115590B true NO115590B (en) | 1968-10-28 |
Family
ID=23241165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO161225A NO115590B (en) | 1963-10-28 | 1964-10-21 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3324222A (en) |
ES (1) | ES304908A1 (en) |
GB (1) | GB1082614A (en) |
NO (1) | NO115590B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3469219A (en) * | 1966-06-16 | 1969-09-23 | Westinghouse Electric Corp | Thermally stabilized cellulose in electrical apparatus and method for making same |
DE2927400A1 (en) * | 1979-07-06 | 1981-01-08 | Siemens Ag | HIGH VOLTAGE INSULATION, ESPECIALLY FOR ELECTRIC COILS, AND METHOD FOR PRODUCING THE HIGH VOLTAGE INSULATION |
CN106812020B (en) * | 2015-11-27 | 2018-04-17 | 中国制浆造纸研究院有限公司 | A kind of transformer insulating paper heat resistance accessory, preparation method and applications |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2050196A (en) * | 1932-03-01 | 1936-08-04 | Wingfoot Corp | Prevention of deterioration of cotton cord by heat |
US2086418A (en) * | 1934-09-04 | 1937-07-06 | Du Pont | Treatment of cellulosic bodies |
US2627504A (en) * | 1948-07-14 | 1953-02-03 | Monsanto Chemicals | Dielectric containing halogenated aromatic hydrocarbon and mono ortho tolyl biguanide as corrosion inhibitor |
US2665733A (en) * | 1949-09-20 | 1954-01-12 | Us Rubber Co | Cellulose fiber tire casing protected against heat aging |
US2806190A (en) * | 1952-11-06 | 1957-09-10 | Sprague Electric Co | Low power factor capacitor |
US2991326A (en) * | 1957-12-24 | 1961-07-04 | Westinghouse Electric Corp | Insulation system for electrical apparatus containing liquid dielectrics |
NL126810C (en) * | 1962-03-23 |
-
1963
- 1963-10-28 US US319174A patent/US3324222A/en not_active Expired - Lifetime
-
1964
- 1964-09-02 GB GB40211/64A patent/GB1082614A/en not_active Expired
- 1964-10-14 ES ES0304908A patent/ES304908A1/en not_active Expired
- 1964-10-21 NO NO161225A patent/NO115590B/no unknown
Also Published As
Publication number | Publication date |
---|---|
US3324222A (en) | 1967-06-06 |
ES304908A1 (en) | 1965-04-01 |
GB1082614A (en) | 1967-09-06 |
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