EP0004262A1 - Isoliermaterial für Hochspannungsgeräte oder dergl. - Google Patents

Isoliermaterial für Hochspannungsgeräte oder dergl. Download PDF

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Publication number
EP0004262A1
EP0004262A1 EP78101552A EP78101552A EP0004262A1 EP 0004262 A1 EP0004262 A1 EP 0004262A1 EP 78101552 A EP78101552 A EP 78101552A EP 78101552 A EP78101552 A EP 78101552A EP 0004262 A1 EP0004262 A1 EP 0004262A1
Authority
EP
European Patent Office
Prior art keywords
insulating material
material according
raised portions
raised
longitudinal
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.)
Withdrawn
Application number
EP78101552A
Other languages
German (de)
English (en)
French (fr)
Inventor
Rolf Müller
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.)
AUTHENRIETH PRESSPANFAB
Presspanfabrik Chr Authenrieth
Original Assignee
AUTHENRIETH PRESSPANFAB
Presspanfabrik Chr Authenrieth
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 AUTHENRIETH PRESSPANFAB, Presspanfabrik Chr Authenrieth filed Critical AUTHENRIETH PRESSPANFAB
Publication of EP0004262A1 publication Critical patent/EP0004262A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid

Definitions

  • the invention relates to a flat insulating material for highs annungsowski p or the like. With formed by raised portions extending in a first (longitudinal) direction of the longitudinal cooling channels, suitable for spacing-maintaining in particular the current-carrying parts relative to the bearing core of high-voltage devices or the like
  • Such flat insulating materials with longitudinal or axial channels are used to isolate electrical high-voltage devices or the like. That is, in particular to isolate transformers, choke coils and converters, for example in the case of a transformer between the transfor core and the wound-up transformer windings, a space is to be kept free, through which a cooling liquid flows in the longitudinal direction for cooling the transformer.
  • the coolant in particular cooling oil
  • optimal cooling of the electrical high-voltage devices is disadvantageously not achieved, since the oil required for cooling can inevitably only be guided axially through the individual longitudinal channels. This results in a relatively high flow rate and thus only a short contact time of the cooling oil with the surfaces to be cooled.
  • the invention has for its object the above to avoid disadvantages described and to create an insulating material in which an improved heat dissipation is achieved.
  • this object is achieved in the case of a flat insulating material of the type mentioned at the outset in that the longitudinal channels are connected to one another by means of cross-connections extending in a second (transverse) direction and formed by interruptions of the raised portions arranged in the longitudinal direction at a mutual distance.
  • an improved heat dissipation is achieved in that there is the possibility of cross-compensation of adjacent oil flows.
  • the oil can distribute itself better when it flows through by flowing through the cross-connections between the longitudinal channels Surfaces results.
  • a particularly preferred embodiment of the invention is characterized in that the raised sections are arranged offset to one another in the transverse direction. This ensures that there is no constriction of the oil ducts by the radial windings, even when there are strong forces which arise, for example, when operating a transformer.
  • Another preferred embodiment provides that the individually standing, raised sections under free letting of intermediate spaces serving as longitudinal channels and cross connections are formed by material characteristics, this embodiment being particularly advantageous if pressboard is used as the insulating material.
  • the raised sections are spherical caps, these raised sections with recesses on the back being produced by hot or cold stamping by means of a female and male mold.
  • a piece of insulating material 10 according to the invention made of pressboard as insulation of a transformer is placed around a transformer core 12.
  • transformer windings 14 wound around the insulating material 10 are indicated.
  • the insulating material 10 is provided with embossed, raised sections 16 in the form of domes.
  • the elevations of the domes 16 are directed toward the transformer core 12, that is to say inwards.
  • the domes 16 are included aligned with one another in the longitudinal or axial direction of the transformer core 12, but offset from one another in the circumferential direction. In this way, there is a free passage in the adjacent longitudinal row next to each calotte 16 of a longitudinal row, before another calotte 16 follows at the same height as in the first longitudinal row in the next row of calottes.
  • the individual domes 16 lie firmly against the transformer core and thus keep the remaining parts of the insulating material 10 at a distance from the transformer core 12.
  • longitudinal channels 18 are formed on the inside of the insulating material 10 between the insulating material 10 and the transformer core 12 as cooling channels for a cooling liquid, which are each connected to one another by cross connections 20.
  • a coolant for example oil
  • a coolant for example oil
  • the flowing oil is deflected along the calottes 16 from the longitudinal oil flow 22 to the side, so that tangential flow portions 24 form, wherein in particular flowing oil can emerge from a longitudinal channel 18 into the adjacent longitudinal channels.
  • the transformer insulation 10 shown consists of pressboard into which the domes 16 are pressed.
  • the domes 16 have a center-to-center distance of 50 mm in the longitudinal direction. Adjacent longitudinal rows of calottes are also arranged 50 mm away from the center line to the center line of the longitudinal rows of calottes. Calottes 16 cont bartter rows are each offset by 25 mm to each other in the longitudinal direction.
  • the radius of curvature of the spherical caps 16 is 30 mm, the spherical caps themselves also have a diameter of approximately 30 mm, so that a spherical cap height of approximately 4 mm results.
  • the pressboard has a thickness of 0.8 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Insulating Bodies (AREA)
EP78101552A 1978-03-22 1978-12-04 Isoliermaterial für Hochspannungsgeräte oder dergl. Withdrawn EP0004262A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782812466 DE2812466A1 (de) 1978-03-22 1978-03-22 Isoliermaterial fuer hochspannungsgeraete o.dgl.
DE2812466 1978-03-22

Publications (1)

Publication Number Publication Date
EP0004262A1 true EP0004262A1 (de) 1979-10-03

Family

ID=6035138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101552A Withdrawn EP0004262A1 (de) 1978-03-22 1978-12-04 Isoliermaterial für Hochspannungsgeräte oder dergl.

Country Status (9)

Country Link
EP (1) EP0004262A1 (ro)
JP (1) JPS54139021A (ro)
BR (1) BR7808561A (ro)
DD (1) DD142402A5 (ro)
DE (1) DE2812466A1 (ro)
FR (1) FR2485248A1 (ro)
GB (1) GB2044011A (ro)
RO (1) RO80444A (ro)
SU (1) SU837339A3 (ro)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011118256A1 (de) * 2011-11-11 2013-05-16 Isotek Gmbh Kühlkanal für Leiterplatten

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034716A (en) * 1989-11-08 1991-07-23 Sundstrand Corporation Radial cooled autotransformer assembly
DE4034317C2 (de) * 1990-10-24 1996-07-11 Aeg Tro Transformatoren Gmbh Radiale Abstützanordnung in axialen Kühlkanälen von Transformatoren oder Drosselspulen mit Lagenwicklungen
EP3859760A1 (en) * 2020-01-30 2021-08-04 ABB Power Grids Switzerland AG Method and conductor structure for manufacturing an electric winding of an electromagnetic induction apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1199890A (fr) * 1957-07-16 1959-12-16 Westinghouse Electric Corp Monture de transformateur
US3416110A (en) * 1967-04-14 1968-12-10 Westinghouse Electric Corp Fluid cooled transformer having casing supported coils and core
US3431524A (en) * 1966-06-08 1969-03-04 Westinghouse Electric Corp Polyphase electrical transformer construction having vertically superposed winding structures with cooling ducts
DE1921862A1 (de) * 1968-04-29 1969-11-20 Westinghouse Electric Corp Isolations-Scheibenelement zur Abstuetzung von Scheibenspulen
GB1242401A (en) * 1967-11-07 1971-08-11 Bruce Peebles Ind Ltd Transformer or reactor winding
DE2316830A1 (de) * 1973-04-04 1974-10-17 Transformatoren Union Ag Vorrichtung zur verbesserung der kuehlung von transformatoren mit lagenwicklung
FR2365867A1 (fr) * 1976-09-22 1978-04-21 Alsthom Savoisienne Bobinages en feuilles metalliques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246218B2 (ro) * 1973-09-19 1977-11-22
JPH045749U (ro) * 1990-04-28 1992-01-20

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1199890A (fr) * 1957-07-16 1959-12-16 Westinghouse Electric Corp Monture de transformateur
US3431524A (en) * 1966-06-08 1969-03-04 Westinghouse Electric Corp Polyphase electrical transformer construction having vertically superposed winding structures with cooling ducts
US3416110A (en) * 1967-04-14 1968-12-10 Westinghouse Electric Corp Fluid cooled transformer having casing supported coils and core
GB1242401A (en) * 1967-11-07 1971-08-11 Bruce Peebles Ind Ltd Transformer or reactor winding
DE1921862A1 (de) * 1968-04-29 1969-11-20 Westinghouse Electric Corp Isolations-Scheibenelement zur Abstuetzung von Scheibenspulen
DE2316830A1 (de) * 1973-04-04 1974-10-17 Transformatoren Union Ag Vorrichtung zur verbesserung der kuehlung von transformatoren mit lagenwicklung
FR2365867A1 (fr) * 1976-09-22 1978-04-21 Alsthom Savoisienne Bobinages en feuilles metalliques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011118256A1 (de) * 2011-11-11 2013-05-16 Isotek Gmbh Kühlkanal für Leiterplatten

Also Published As

Publication number Publication date
RO80444A (ro) 1982-12-06
DE2812466A1 (de) 1979-09-27
BR7808561A (pt) 1980-05-20
FR2485248A1 (fr) 1981-12-24
GB2044011A (en) 1980-10-08
JPS54139021A (en) 1979-10-29
DD142402A5 (de) 1980-06-18
SU837339A3 (ru) 1981-06-07

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

110E Request filed for conversion into a national patent application [according to art. 135 epc]
18D Application deemed to be withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: MUELLER, ROLF