Method of winding a conductor in double pancake

Patent metadata

Field	Value
Publication number	US-9828206-B2
Application number	US-201414568778-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 19, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A method of winding a conductor in double pancake, including a first pancake and a second pancake, a reel initially containing the conductor, the method including: a first step in which the reel is placed on a tensioner and a first portion of the conductor is wound around a storage volume; a second step in which a first part of the conductor is inserted in a winding mandrel to change the layer; a third step in which a second portion of the conductor is wound around a first part of the storage volume so as to form a first pancake; a fourth step in which the first portion of the conductor is unwound from the storage volume and is wound around the reel; and a fifth step in which the first portion of the conductor is wound around a second part of the storage volume to form a second pancake.

First claim

The invention claimed is:

1. A method of winding a conductor in double pancake, said double pancake comprising a first pancake and a second pancake, a reel initially containing said conductor, said method comprising:
placing the reel on a tensioner and winding a first portion of the conductor around a storage volume;
inserting a first part of the conductor in a winding mandrel in order to change a layer between the first portion of the conductor and a second portion of the conductor;
winding the second portion of the conductor around a first part of the winding mandrel so as to form the first pancake;
unwinding the first portion of the conductor from the storage volume and winding the first portion of the conductor around the reel, and
winding the first portion of the conductor around a second part of the winding mandrel so as to form the second pancake.

2. The method according to claim 1 , wherein, in said placing of the reel on the tensioner and winding the first portion of the conductor around the storage volume, the reel is placed at a first part of the tensioner, the reel possibly being moved between the first part of the tensioner and a second part of the tensioner; wherein the first portion of the conductor is wound between a first part of the storage volume and a second part of the storage volume in a first rotation direction due to displacement of the reel between the first part of the tensioner and the second part of the tensioner.

3. The method according to claim 2 , wherein the inserting is done once the reel has reached the second part of the tensioner, the winding mandrel being placed at the second part of the storage volume.

4. The method according to claim 2 , wherein in said winding of the second portion of the conductor around the first part of the winding mandrel so as to form the first pancake, the second portion of the conductor is wound in the first rotation direction, the reel remaining fixed at the second part of the tensioner.

5. The method according to claim 2 , wherein in said unwinding of the first portion of the conductor from the storage volume and winding the first portion of the conductor around the reel, the reel is initially put into position on the tensioner at the first part of the tensioner and the first portion of the conductor is unwound from the storage volume in the first rotation direction by displacement of the reel between the first part of the tensioner and the second part of the tensioner.

6. The method according to claim 1 , wherein in said winding of the first portion of the conductor around the second part of the mandrel so as to form the second pancake, the first portion of the conductor is wound in a second rotation direction above the first pancake.

7. The method according to claim 1 , wherein in the inserting, the second part of the conductor is inserted in a groove of the winding mandrel.

8. The method according to claim 1 , wherein in said winding of the second portion of the conductor around the first part of the winding mandrel so as to form the first pancake, the conductor is held in position by means of a system of axial and radial pressure rollers.

9. The method according to claim 1 , wherein in said unwinding of the first portion of the conductor from the storage volume and winding the first portion of the conductor around the reel, the conductor is held in position by means of a system of axial and radial pressure rollers.

10. The method according to claim 1 , wherein in said unwinding of the first portion of the conductor from the storage volume and winding the first portion of the conductor around the reel, the tensioner is offset in the radial direction.

11. The method according to claim 1 , wherein in said unwinding of the first portion of the conductor from the storage volume and winding the first portion of the conductor around the reel, the reel is turned back on a tensioner axis of the tensioner.

12. The method according to claim 1 , wherein in said winding of the second portion of the conductor around the first part of the winding mandrel so as to form the first pancake, the conductor forming the first pancake is clamped once the first pancake has been formed.

13. The method according to claim 1 , further comprising, prior to winding the first portion of the conductor around the second part of the winding mandrel so as to form the second pancake, positioning an insert above the first pancake to be inserted between the first pancake and the second pancake.

Assignees

• Commissariat L Energie Atomique Et Aux Energies Alternatives

Inventors

• Pasquet Raphaël
• Schild Thierry
• Berriaud Christophe
• Scola Loris

Classifications

• H01F41/084

  for forming pancake coils · CPC title

• H01F6/06 Primary

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• H01F27/2871

  Pancake coils · CPC title

• Y10T29/49014

  Superconductor · CPC title

• B65H54/00 Primary

  Winding, coiling, or depositing filamentary material (cores, formers, holders, cans or receptacles B65H75/02) · CPC title