EP0058905B1 - Transformateur ou inductance refroidi par liquide isolant, procédé et dispositif de fabrication - Google Patents

Transformateur ou inductance refroidi par liquide isolant, procédé et dispositif de fabrication Download PDF

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Publication number
EP0058905B1
EP0058905B1 EP82101098A EP82101098A EP0058905B1 EP 0058905 B1 EP0058905 B1 EP 0058905B1 EP 82101098 A EP82101098 A EP 82101098A EP 82101098 A EP82101098 A EP 82101098A EP 0058905 B1 EP0058905 B1 EP 0058905B1
Authority
EP
European Patent Office
Prior art keywords
turns
winding
sheet
transformer
cooling channel
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.)
Expired
Application number
EP82101098A
Other languages
German (de)
English (en)
Other versions
EP0058905A1 (fr
Inventor
Bertil Dipl.-Ing. Moritz
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0058905A1 publication Critical patent/EP0058905A1/fr
Application granted granted Critical
Publication of EP0058905B1 publication Critical patent/EP0058905B1/fr
Expired 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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the invention relates to a transformer cooled with insulating liquid or a correspondingly cooled choke according to the preamble of claim 1, a manufacturing method for the transformer or the choke and an arrangement for carrying out such a method.
  • the radial distance of the conductor strip from the geometric axis of the winding varies in the axial direction in the case of such windings and, at least for the radially outer part of the winding, is greatest at the axial winding ends.
  • filling is required in order to obtain the desired funnel-shaped shape at the axial winding ends. It is desirable, inter alia for dielectric reasons, that this fill be made of an electrically insulating material. Since such a material has poor thermal conductivity, the fill must lie in thermal planes of symmetry, i. H. either in the middle of the cooling channels or in the middle between two adjacent cooling channels, so that the heat conduction in the radial direction is not hindered.
  • the invention has for its object to develop a transformer or a choke of the type mentioned so that the problem shown in the application of filler in the axial end regions of the winding is solved in a simple manner.
  • a transformer or a choke is provided according to the preamble of claim 1 with the features mentioned in the characterizing part of claim 1.
  • the invention is based on the idea of integrating the filler mentioned at the beginning into the cooling channel elements.
  • the cooling duct element is preferably made from an initially flat, rectangular compression washer, which is provided on one broad side with such a profile that the washer in the areas along two opposite parallel narrow sides has an increasing thickness towards these narrow sides, which is so dimensioned that the edge sections of the conductor strip get the desired bent shape.
  • the cooling duct elements are preferably produced by means of a sawing machine which works with a plurality of saw blades with two different diameters.
  • the saw blades are arranged alternately with the two existing diameters coaxially next to one another on a shaft which can be raised and lowered in relation to a support plane on which the insulating material disks for the cooling channel elements are advanced.
  • the height of the shaft is controlled depending on the position of the insulating material disc on the support level. This control is preferably carried out with the aid of a processor.
  • the profile of the cooling channel element can be changed as desired and can be adapted to all desired shapes. When winding the winding, one only needs to take into account the sequence of the cooling channel elements in order to obtain the desired shape of the winding.
  • Figure 1 shows part of a transformer core with leg 1 and upper and lower yoke 2 and 3. Concentrically around the leg 1, an inner winding 4 and an outer winding 5 are arranged.
  • the windings consist of aluminum or copper foil 6 or 7 wound in many turns, the thickness of which can be between 0.01 and 3 mm. Between the turns there is a film of suitable insulating material, for example polyethylene glycol terephthalate, the thickness of which can be, for example, between 0.01 and 0.1 mm.
  • the inner winding 4 is wound on a winding cylinder 8, for example made of glass fiber reinforced polyester or metallic material such as. B. aluminum.
  • the outer winding 5 is wound on the inner winding with an intermediate insulation gap in which ribs 9 made of pressboard, bakelite or glass fiber reinforced polyester are arranged parallel to the axis of the windings.
  • the iron core of the transformer with the windings is in a with insulating liquid, for. B. oil, filled transformer tank.
  • the windings are cooled in that the insulating liquid circulates through cooling channels in the windings, which are formed by cooling channel elements which are arranged between two adjacent turns of the conductor strip at different radial distances from the geometric axis of the windings. In Figure 1, only the cooling channel elements 10 to 14 are shown in the outer winding 5.
  • FIGS 2 to 5 show the structure of the cooling duct element 13.
  • the other cooling duct elements in the outer winding are constructed in the same way.
  • the cooling duct element 13 shown is produced from a rectangular, originally flat clamping chip with a thickness h of, for example, 8 mm, a width of, for example, 0.5 m and a length which has at least the width of the conductor foil, for example 2 m.
  • One broadside of the press washer is worked on profile, z. B. sawn that the disk gets a thickness increasing towards its two narrow sides 15, 16.
  • Parallel grooves 17 are formed on both broad sides of the disk and form cooling channels.
  • the grooves 17 on the two broad sides of the disk lie exactly opposite one another in pairs and extend from one narrow side 15, 16 of the disk to the other.
  • the remaining material on the sides of the grooves 17 forms the spacer elements 18, while the remaining material on the bottom of the grooves forms the connecting pieces 19.
  • the thicker edge regions of the elements are frayed by the provision of continuous grooves 20 at the ends of each second connecting piece 19. These edge areas are also softened by pushing them through softening rollers, after which they can easily assume the shape shown in FIG.
  • FIGS. 6 and 7 schematically show a saw for sawing cooling duct elements of the type shown in FIGS. 2 to 5.
  • the saw has a fixed stand with a horizontal stand part 21 and a vertical stand part 22 arranged thereon.
  • the horizontal stand part 21 there are several support rollers 23 mounted on which the insulating disks provided for the production of cooling channel elements are pushed forward during sawing.
  • the saw is provided with a large number of saw blades 24, 25, which have two different diameters.
  • the saw blades are fastened coaxially next to one another on a shaft 26, on which a pulley 27 is also seated, via which the shaft is driven by a motor 29 by means of a V-belt 28.
  • the one of two diameters saw blades are alternately attached to the shaft 26, so that adjacent saw blades 24, 25 always have different diameters.
  • the shaft 26 is mounted in a holder which is vertically displaceable on the vertical stand part 22.
  • This holder comprises two vertical supports 30, 31 and a sheet 32 holding the supports together.
  • Each support 30, 31 carries on one side one of the bearings for the shaft 26 with the saw blades.
  • On its other side, each support is provided with a round shaft 33 or 34, which extends along the associated support and is fixedly attached to this support.
  • These shafts are supported at their two ends in ball bushings 35, 36 and 37, 38, which are firmly fixed to the vertical stand part 22.
  • the movable plate 32 is connected via a set screw 39 to a disc motor 40, which is controlled by connecting lines 41 by a processor in such a way that the height of the saw blades is automatically changed in a predetermined manner depending on the position of the insulating material disc to be processed on the support rollers 23 .
  • a processor in which the shaft with the saw blades can be raised and lowered in the manner mentioned, the profile of the cooling duct elements can be changed as desired and adapted to the customer's requirements. This makes it possible to obtain the correct shape for a transformer winding with bent-out end sections in a relatively simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Transformer Cooling (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Coil Winding Methods And Apparatuses (AREA)

Claims (6)

1. Transformateur ou inductance refroidi par un liquide isolant, constitué par un noyau fabriqué avec un matériau magnétique avec au moins une branche (11) et des culasses (2, 3), par au moins un enroulement (5) disposé, pour l'essentiel, concentriquement sur la branche et constitué par plusieurs spires d'un ruban bobinées les unes sur les autres, lequel ruban est constitué par une feuille métallique et par une feuille isolante prévue au moins sur un côté de la feuille métallique et étant conformé, au moins pour une partie des spires, de manière que les zones marginales du ruban possèdent une autre distance par rapport à l'axe géométrique de l'enroulement que la zone médiane du ruban des spires concernées, et par au moins un élément de canal de refroidissement (13) qui est disposé entre deux spires ou partie de spires successives du ruban ou à l'intérieur de la spire la plus intérieure du ruban de l'enroulement, l'élément de canal de refroidissement (13) comportant plusieurs éléments d'entretoise (18) reliés entre eux, allongés, parallèles et disposés à distance entre eux en direction latérale (sens périphérique), lesquels éléments d'entretoise maintiennent écartés entre elles les deux spires ou partie de spires du ruban de manière qu'entre ces spires ou à l'intérieur de la spire la plus intérieure du ruban, des canaux (17) sont formés pour le transport du liquide de refroidissement de l'une à l'autre des surfaces axiales d'extrémité de l'enroulement en ruban, caractérisé par le fait que les éléments d'entretoise (18) de l'élément de canal de refroidissement (13) possèdent une épaisseur qui croît en direction des surfaces axiales d'extrémité de l'enroulement.
2. Transformateur ou inductance selon la revendication 1, caractérisé par le fait que les éléments d'entretoise (18) sont reliés entre eux, en direction latérale (sens périphérique), par des pièces de liaison (19) qui sont disposées à distance par des spires voisines, et de préférence au milieu des deux spires voisines.
3. Transformateur ou inductance selon la revendication 1 ou 2, caractérisé par le fait que l'élément de canal de refroidissement (13) est constitué par une plaquette d'un matériau isolant flexible, dans laquelle sont ménagées, sur les deux côtés larges, des gorges (17), alors que le matériau qui subsiste latéralement par rapport aux gorges, forme les éléments d'entretoise (18) et que le matériau qui subsiste dans le fond des gorges constitue les pièces de liaison (19).
4. Procédé pour la fabrication d'un transformateur ou d'une inductance selon l'une des revendications 1 à 3, caractérisé par le fait que les éléments de canaux de refroidissement (13) sont fabriqués avec une plaquette rectangulaire de presspahn de telle manière que le côté large de la plaquette est munie, par exemple par sciage, d'un profil tel que la plaquette est pourvue, dans la région qui se situe le long des deux côtés étroits parallèles et se situant l'un en face de l'autre, d'une épaisseur qui croît en direction desdits côtés étroits, que des gorges parallèles (17) pour des canaux de refroidissement qui s'étendent de l'un à l'autre desdits côtés étroits, sont ménagés des deux côtés de la plaquette, par exemple par sciage et que les deux sections marginales plus épaisses de la plaquette, sont ramollies par un traitement mécanique.
5. Dispositif pour la mise en oeuvre du procédé selon la revendication 4, caractérisé par le fait que sur un arbre (26) sont montées coaxialement les unes à côté des autres et suivant une disposition alternée, plusieurs lames de scies circulaires (24, 25) ayant deux diamètres différents et servant à façonner les plaquettes de matériau isolant en élément de canaux de refroidissement, que l'arbre (26) peut être soulevé et être abaissé par rapport à un plan d'appui sur lequel sont transportées les plaquettes de matériau isolant, et qu'il est prévu des organes pour la commande automatique de la position en hauteur de l'arbre (26), d'une manière prédéterminée, en fonction de la position des plaquettes de matériau isolant sur le plan d'appui.
6. Dispositif suivant la revendication 5, caractérisé par le fait que l'arbre (26) avec les lames de scies circulaires (24, 25) sont montés dans un support (30, 31, 32) déplaçable au niveau d'un statif, lequel support est relié à une vis de réglage (39) commandée à l'aide d'un processeur.
EP82101098A 1981-02-24 1982-02-15 Transformateur ou inductance refroidi par liquide isolant, procédé et dispositif de fabrication Expired EP0058905B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8101197A SE428979B (sv) 1981-02-24 1981-02-24 Med isolervetska kyld transformator eller reaktor
SE8101197 1981-02-24

Publications (2)

Publication Number Publication Date
EP0058905A1 EP0058905A1 (fr) 1982-09-01
EP0058905B1 true EP0058905B1 (fr) 1984-10-17

Family

ID=20343203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101098A Expired EP0058905B1 (fr) 1981-02-24 1982-02-15 Transformateur ou inductance refroidi par liquide isolant, procédé et dispositif de fabrication

Country Status (8)

Country Link
US (1) US4477790A (fr)
EP (1) EP0058905B1 (fr)
JP (1) JPS57155711A (fr)
CA (1) CA1182876A (fr)
DE (1) DE3260979D1 (fr)
NO (1) NO820539L (fr)
SE (1) SE428979B (fr)
ZA (1) ZA821169B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469301B (sv) * 1991-10-23 1993-06-14 Asea Brown Boveri Transformator eller reaktor
US6103359A (en) * 1996-05-22 2000-08-15 Jsr Corporation Process and apparatus for manufacturing an anisotropic conductor sheet and a magnetic mold piece for the same
US6163241A (en) * 1999-08-31 2000-12-19 Stupak, Jr.; Joseph J. Coil and method for magnetizing an article
JP4728015B2 (ja) * 2005-03-02 2011-07-20 鈴野化成株式会社 棒状化粧材繰出容器
US9514878B2 (en) * 2013-11-22 2016-12-06 Tamura Corporation Coil and manufacturing method for same, and reactor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029416A1 (de) * 1979-08-14 1981-03-26 ASEA AB, Västerås Starkstromtransformator oder -drossel

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056071A (en) * 1959-02-12 1962-09-25 William R Baker Electrical coil structure
GB962222A (en) * 1959-10-29 1964-07-01 English Electric Co Ltd Improvements in or relating to inductive windings
FR1411081A (fr) * 1964-07-08 1965-09-17 Comp Generale Electricite Perfectionnements aux bobinages alternatifs
DE1948848A1 (de) * 1969-09-26 1971-04-01 Siemens Ag Spulenwicklung
US3748616A (en) * 1972-03-24 1973-07-24 Ite Imperial Corp Transformer winding structure using corrugated spacers
CH598679A5 (fr) * 1976-10-29 1978-05-12 Bbc Brown Boveri & Cie
DE2753055C3 (de) * 1977-11-28 1980-09-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Aufbau einer supraleitenden Magnetwicklung
SE417466B (sv) * 1978-11-09 1981-03-16 Asea Ab Krafttransformator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029416A1 (de) * 1979-08-14 1981-03-26 ASEA AB, Västerås Starkstromtransformator oder -drossel

Also Published As

Publication number Publication date
EP0058905A1 (fr) 1982-09-01
CA1182876A (fr) 1985-02-19
ZA821169B (en) 1983-01-26
US4477790A (en) 1984-10-16
DE3260979D1 (en) 1984-11-22
SE8101197L (sv) 1982-08-25
SE428979B (sv) 1983-08-01
NO820539L (no) 1982-08-25
JPS57155711A (en) 1982-09-25

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