WO1990003039A1 - Procede et dispositif d'enroulement pour la fabrication d'enroulements de formes complexes - Google Patents

Procede et dispositif d'enroulement pour la fabrication d'enroulements de formes complexes Download PDF

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Publication number
WO1990003039A1
WO1990003039A1 PCT/AT1989/000083 AT8900083W WO9003039A1 WO 1990003039 A1 WO1990003039 A1 WO 1990003039A1 AT 8900083 W AT8900083 W AT 8900083W WO 9003039 A1 WO9003039 A1 WO 9003039A1
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WO
WIPO (PCT)
Prior art keywords
winding
windings
cold
polymer
winding device
Prior art date
Application number
PCT/AT1989/000083
Other languages
German (de)
English (en)
Inventor
Stefan GRÜNDORFER
Harald Fillunger
Peter Reichel
Hansjörg KÖFLER
Original Assignee
Elin-Union Aktiengesellschaft Für Elektrische Industrie
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 Elin-Union Aktiengesellschaft Für Elektrische Industrie filed Critical Elin-Union Aktiengesellschaft Für Elektrische Industrie
Publication of WO1990003039A1 publication Critical patent/WO1990003039A1/fr

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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

Definitions

  • the invention relates to a process for the production of complexly shaped, highly stressable and geometrically accurate, preferably self-supporting windings, which optionally consist of several layers with several turns each, preferably superconducting dipole coils, for electrical machines or devices. Furthermore, the invention relates to a winding device for carrying out this method.
  • Windings are non-rotationally symmetrical superconducting coils without an iron core, e.g. Excitation windings of superconducting generators.
  • Other typical applications for superconducting or normally conducting windings can be found e.g. B. in Hochenergie ⁇ physics, in magneto-optics, in electromagnetic acceleration, in air gap windings in machines.
  • the conductors must be positively positioned. If the windings are subjected to high currents and / or high forces after their completion, a non-positive positioning of the conductors must be ensured.
  • winding is divided into individual coil parts which are connected to one another outside the winding space relevant for the magnetic field, such as the z. B. is made in generator coils.
  • the object of the invention is therefore to provide a method and a winding device of the type mentioned at the outset with which these windings can be produced in several simple steps in an undivided manner.
  • REPLACEMENT LEAF A suitable winding tension must be selected when positioning the winding.
  • a multilayer can Winding which is usually constructed in the form of a shell, is reduced by excessive external pressure on the underlying shell or layer, the tension of the inner shell or layer and this inner layer (s) are thereby loosened.
  • the winding tension required for producing a winding that can be subjected to high stresses and is geometrically accurate can be easily adjusted in layers or by windings and can be maintained over the entire winding circumference.
  • the conductor of the winding is subjected to an annealing reaction either before the winding process or after the cold working.
  • conductor shapes for producing the winding according to the invention for. B. solid conductors, both with a round cross section and other profiles, waveguides, stranded conductors or pressed conductors can be used.
  • Various materials such as e.g. Copper, aluminum, superconductors of various types, in the special NbTi or NbTiTa superconductor or Al5 superconductor (such as Nb3Sn or b3Al) can be used.
  • the shape of the windings can be based on the two existing methods of winding production ("wind and react" -
  • the method can be used that the simple winding is carried out with the already reacted conductor, so that the glow reaction of the conductor represents the last step in the manufacture of the conductor. This glow reaction also represents the first step in the production of the winding.
  • the winding can then be further processed as described according to the invention ("react-wind-press-impregnate" method: RWPI method).
  • the method can be used that the simple winding is carried out with the unreacted conductor, then the winding is cold-formed, then the glow reaction of the winding is carried out with the still unreacted conductor and then the impregnation is carried out for shape stabilization ("wind-press-react and impregnate" method: WPRI method).
  • WPRI method shape stabilization
  • additional tensions are built into the winding, which is wound in simple geometry, at the points to be deformed, in addition to the pretensions built in by the winding tension.
  • the winding tension which is required for the production of such a highly stressable and geometrically precise winding, can be adjusted in the simple winding, in layers or windings.
  • the simple winding is cold-deformed into a complicated-shaped winding, additional stresses are built into the winding at the deformed points, the pre-stresses built into the simple winding not being lost. These additional voltages in the winding are installed so that the relative position of the individual turns does not change in an uncontrolled manner.
  • the dimensionally stable consolidation of the winding is carried out with a polymer, preferably with a low-viscosity one.
  • the winding must be impregnated with a polymer which is low enough in viscosity at the processing temperature to penetrate into the interstices between the winding which are present between the individual conductors.
  • the impregnation of the winding must be carried out with a polymer which, after solidification, can absorb the stresses built in during winding and cold forming of the windings through the polymer structure, so that the built-in stresses are maintained, so to speak, in any load state of the winding stay "frozen".
  • the polymer is either a curable plastic, for example an epoxy resin or polyester resin, or a thermoplastic, for example a polyolefin.
  • the interstices between the windings are solidified with fiber materials, e.g. B. glass, polyester or the like. This creates a non-positive conductor-polymer-conductor connection within the winding.
  • the impregnation can be carried out, for example, by either immersing the winding in a preferably liquid, low-viscosity synthetic resin and pulling it out again after or during gelling of the resin and then gelling and curing at a higher temperature (dip impregnation). Or in such a way that the winding is located in a vacuum container which is evacuated and after this evacuation an immersion impregnation is carried out (immersion vacuum impregnation). Or in such a way that the winding is located in a vacuum container which is evacuated and after this evacuation the liquid, low-viscosity resin is slowly fed into the lower-lying winding area and is sucked up into the winding by capillary action.
  • the resin gels at a higher temperature and the resin hardens in the winding at a further elevated temperature (vacuum impregnation). Or so that vacuum impregnation is carried out with the winding, but in such a way that after the resin has been sucked into the winding, the vacuum is broken and the gelling and curing of the resin in the winding is carried out either at normal pressure or at excess pressure (Vacuum pressure impregnation). Or so that the winding is in the vacuum container, which is evacuated and after this evacuation, a liquid, low-viscosity polymer (such as a thermoplastic) is pressed into the winding by another container (pressure impregnation).
  • a liquid, low-viscosity polymer such as a thermoplastic
  • the winding device is designed in such a way that the winding can be grasped or encompassed as completely as possible after the simple winding has been produced, so that during the subsequent deformation the individual conductors cannot shift relative to one another and the shape accuracy of the winding could thus be lost .
  • the cold forming of the winding can be carried out by bending or pressing or a similar operation.
  • the old deformation of the winding is carried out together with the winding form, the winding form being carried out in such a way that during the cold forming the winding remains and is guided on all sides as far as possible and the final geometry of the winding is reached after the cold forming.
  • the end geometry of the winding can either be the winding geometry in the ready-to-install state, or, if a package insulation or similar winding modifications are to be carried out after the winding has been produced, can also be an end geometry reduced by this modification.
  • the parts of the winding form which comprise those parts of the winding that are not to be changed during the cold deformation of the winding, can be made rigid. Those parts of the winding form which comprise the parts of the winding which are to be deformed during the cold forming of the winding must be able to be exchanged in a suitable manner in a flexible or piece-wise manner, so that the shaped parts correspond to the desired final geometry of the winding.
  • the winding device also serves as a solidification form for the cold-formed winding provided with polymers.
  • the shape of the winding is stabilized in such a way that the winding and bending shape is made into an impregnation shape by adding suitable shaped parts.
  • the winding device also serves as an annealing device.
  • the tool which serves as a winding, pressing and impregnating tool, must also serve as an annealing device for the reaction annealing and must be made of a temperature-resistant material, or, in part, by a work suitable for the reaction annealing ⁇ stuff to be replaced.
  • Fig. 1 shows a cranked dipole winding
  • Fig. 2 its simple winding geometry
  • Fig. 3a to d special versions of simple winding geometries.
  • the winding can consist of several layers 1, each with several turns 2.
  • the winding form must be constructed such that the width of the winding window 3 of the flat winding has a suitable oversize over the width of the winding window 3 of the finished winding according to FIG. 1, so that the conductor length of each individual turn in the deformed state is essentially the same is the same as in the undeformed state.
  • the winding form must be constructed in such a way that both the winding core and the outer mounting of the winding can be replaced flexibly or piece by piece over the winding width that is to be deformed in the second step.
  • the parts of the winding shape which enclose the winding length must be strong or solid enough to keep the longitudinal parts of the winding, which should not be changed by the deformation, in their original shape.
  • FIGS. 3a to d special designs of the winding geometry are shown, a non-rotationally symmetrical winding being wound rotationally symmetrically and then being shaped into the final shape.
  • winding geometry is when a three-dimensional winding is wound flat (i.e. two-dimensionally) and then brought into the desired three-dimensional shape.
  • An example of this is the winding of a cranked dipole coil, as shown in FIG. 1.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Abstract

Les procédés actuels de fabrication ne permettent pas de produire maints enroulements de formes complexes, capables d'être soumis à des sollicitations élevées, ayant une géométrie précise et de préférence non soutenus, de sorte qu'il faut subdiviser l'enroulement. Le procédé et le dispositif d'enroulement décrits permettent de produire ces enroulements en une seule pièce par plusieurs étapes simples d'usinage. Selon l'invention, l'enroulement est formé avec une géométrie simple, puis mis dans sa forme définitive par déformation à froid et finalement consolidé par imprégnation de façon à devenir indéformable. L'enroulement dipôle coudé tridimensionnel est par exemple enroulé à plat, c'est-à-dire en deux dimensions, puis mis dans sa forme définitive par déformation à froid et finalement consolidé avec des polymères.
PCT/AT1989/000083 1988-09-12 1989-09-11 Procede et dispositif d'enroulement pour la fabrication d'enroulements de formes complexes WO1990003039A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT222888 1988-09-12
ATA2228/88 1988-09-12

Publications (1)

Publication Number Publication Date
WO1990003039A1 true WO1990003039A1 (fr) 1990-03-22

Family

ID=3530414

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1989/000083 WO1990003039A1 (fr) 1988-09-12 1989-09-11 Procede et dispositif d'enroulement pour la fabrication d'enroulements de formes complexes

Country Status (1)

Country Link
WO (1) WO1990003039A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1455188A (en) * 1919-06-23 1923-05-15 Int Harvester Co Method of forming flat coils
GB1222713A (en) * 1967-10-18 1971-02-17 Ane Coil Ltd Improvements in or relating to method for manufacturing non-circular coils and tool for carrying out this method
US3786353A (en) * 1972-03-30 1974-01-15 J Pun Coil forming apparatus method and galvo-motor product
FR2342548A1 (fr) * 1976-02-24 1977-09-23 Philips Nv Bobine orthocyclique
JPS55162214A (en) * 1979-06-06 1980-12-17 Toshiba Corp Preparation of multiplex winding rectangular coil
JPS5764906A (en) * 1980-10-08 1982-04-20 Toshiba Corp Impregnated superconductive coil
US4554731A (en) * 1983-11-07 1985-11-26 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for making superconductive magnet coils
JPS62111404A (ja) * 1985-11-09 1987-05-22 Sumitomo Electric Ind Ltd シ−ト状コイルの製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1455188A (en) * 1919-06-23 1923-05-15 Int Harvester Co Method of forming flat coils
GB1222713A (en) * 1967-10-18 1971-02-17 Ane Coil Ltd Improvements in or relating to method for manufacturing non-circular coils and tool for carrying out this method
US3786353A (en) * 1972-03-30 1974-01-15 J Pun Coil forming apparatus method and galvo-motor product
FR2342548A1 (fr) * 1976-02-24 1977-09-23 Philips Nv Bobine orthocyclique
JPS55162214A (en) * 1979-06-06 1980-12-17 Toshiba Corp Preparation of multiplex winding rectangular coil
JPS5764906A (en) * 1980-10-08 1982-04-20 Toshiba Corp Impregnated superconductive coil
US4554731A (en) * 1983-11-07 1985-11-26 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for making superconductive magnet coils
JPS62111404A (ja) * 1985-11-09 1987-05-22 Sumitomo Electric Ind Ltd シ−ト状コイルの製造方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 320 (E-550)(2767) 17 Oktober 1987, & JP-A-62 111404 (SUMITOMO ELECTRIC IND. LTD.,) 22 Mai 1987, siehe das ganze Dokument *
PATENT ABSTRACTS OF JAPAN vol. 5, no. 34 (E-48)(706) 04 März 1981, & JP-A-55 162214 (TOKYO SHIBAURA DENKI K.K.) 17 Dezember 1980, siehe das ganze Dokument *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 140 (E-121)(1018) 29 Juli 1982, & JP-A-57 64906 (TOKYO SHIBAURA DENKI K.K.) 20 April 1982, siehe das ganze Dokument *

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