EP0921535A2 - Supraleitende Spule mit höhem kritischen Temperatur und Herstellungsverfahren solcher Spule - Google Patents

Supraleitende Spule mit höhem kritischen Temperatur und Herstellungsverfahren solcher Spule Download PDF

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Publication number
EP0921535A2
EP0921535A2 EP98402909A EP98402909A EP0921535A2 EP 0921535 A2 EP0921535 A2 EP 0921535A2 EP 98402909 A EP98402909 A EP 98402909A EP 98402909 A EP98402909 A EP 98402909A EP 0921535 A2 EP0921535 A2 EP 0921535A2
Authority
EP
European Patent Office
Prior art keywords
htc
metallic material
oxidized
coil
strand
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Withdrawn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
EP98402909A
Other languages
English (en)
French (fr)
Other versions
EP0921535A3 (de
Inventor
Gérard Duperray
Denis Legat
Albert Leriche
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.)
Alcatel Lucent SAS
Nokia Inc
Original Assignee
Alcatel SA
Nokia Inc
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 Alcatel SA, Nokia Inc filed Critical Alcatel SA
Publication of EP0921535A2 publication Critical patent/EP0921535A2/de
Publication of EP0921535A3 publication Critical patent/EP0921535A3/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Withdrawn legal-status Critical Current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
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor

Definitions

  • the invention relates to a high superconductive coil. critical temperature, and a method for manufacturing of such a coil.
  • a high temperature superconductive coil critical includes at least one strand winding HTc superconducting multifilament.
  • the HTc superconducting multifilament strand includes a plurality of HTc superconductive ceramic filaments drowned in a silver matrix.
  • the HTc superconducting multifilament strand is produced using "Powder In Tube” technology Tube, PIT). This consists of filling a billet of reagents powdery likely, after heat treatment, to transform into ceramic-type superconductive material HTc. This billet is then closed under vacuum and stretched, bundled in a new billet itself closed vacuum and stretched in turn. The multifilament strand resulting can undergo the same steps, and so on up to the number of filaments per unit area desired.
  • the strand thus produced is then shaped final then heat treated for processing powdery reagents in HTc superconductive ceramic.
  • the HTc superconducting multifilament strand is first heat treated then the coil and made from the superconducting multifilament strand in phase superconductive.
  • This manufacturing method makes it possible to get rid of insulation problems of the constituent turns of the winding. Indeed the insulation can be related to cold when building the coil.
  • this manufacturing method induces mechanical stresses in the multifilament strand HTc superconductor in superconductive phase, harmful to electrical performance of the coil thus produced.
  • the coil is made with a strand HTc superconducting multifilament in non-phase superconductive, then the coil thus produced is processed thermally in order to synthesize the powdery reagents in HTc superconductive ceramic.
  • This second embodiment makes it possible to overcome of a large part of the mechanical stress problems in the coil and therefore improve performance intrinsic electrical components of the coil.
  • the ceramic paper is no longer self-supporting and therefore the coil is very difficult to handle, especially during the stages consolidation and reinforcement, for example by resin injection.
  • EP-A-0772208 describes a coil and a method of "react and wind” manufacturing of a superconductive coil HTc.
  • the HTc multifilament strand is co-wound with a solid sheet of metallic material whose surface has been previously oxidized.
  • EP-A-0772208 improves the mechanical strength of the coil while reducing the thicknesses required for the insulation (of the order of 0.03 mm).
  • the fraction of the liquid phase precursors flows through capillarity between the oxidized metal sheet and the matrix of silver, thereby inducing pollution of the precursors by metal oxide, and a variation in the composition stoichiometric of the precursors which can affect substantially synthesis in the superconducting phase.
  • the purpose of the present invention is to provide a process for manufacturing a multifilament strand coil HTc overcoming the drawbacks resulting from the above process, and a coil thus produced.
  • the oxidized metallic material is a ventilated material.
  • the metallic material oxidized aerated consists of a plurality of metallic wires oxidized woven fabrics.
  • the material aerated oxidized metal is an expanded oxidized metal.
  • the oxidized metallic material is chosen from Fe, Ni, Al, Cu, or a mixture thereof.
  • the material aerated metal can be pretreated pre-oxidation.
  • Oxidation of aerated metallic material can be done together with synthetic heat treatment.
  • aerated oxidized metallic material is meant a metallic material at least surface non-oxidized, with through holes.
  • the multifilament strand is made according to any known method, in particular the PIT (Powder In Tube) methods.
  • the material aerated oxidized metallic 6 consists of a plurality of oxidized metal wires 7 woven together.
  • the fabric as well performed allows oxygen circulation between the coil turns during synthetic heat treatment and oxidation.
  • the material ventilated oxidized metal 6 is an expanded oxidized metal 8.
  • the expanded metal mesh allows circulation of oxygen between the turns of the coil during processing thermal synthesis and oxidation.
  • the metallic material intended to be oxidized is chosen among the most oxidizable metals, especially among Fe, Ni, Al, Cu, or a mixture thereof.
  • the invention also relates to a manufacturing method of a HTc superconducting multifilament strand coil as described above.
  • the material aerated metallic 6 undergoes a preliminary heat treatment of pre-oxidation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP98402909A 1997-12-04 1998-11-23 Supraleitende Spule mit höhem kritischen Temperatur und Herstellungsverfahren solcher Spule Withdrawn EP0921535A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715293 1997-12-04
FR9715293A FR2772180B1 (fr) 1997-12-04 1997-12-04 Bobine supraconductrice haute temperature critique, et procede pour la fabrication d'une telle bobine

Publications (2)

Publication Number Publication Date
EP0921535A2 true EP0921535A2 (de) 1999-06-09
EP0921535A3 EP0921535A3 (de) 1999-06-23

Family

ID=9514153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402909A Withdrawn EP0921535A3 (de) 1997-12-04 1998-11-23 Supraleitende Spule mit höhem kritischen Temperatur und Herstellungsverfahren solcher Spule

Country Status (5)

Country Link
EP (1) EP0921535A3 (de)
JP (1) JPH11260628A (de)
CA (1) CA2253682A1 (de)
FR (1) FR2772180B1 (de)
NO (1) NO985654L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019150123A1 (en) * 2018-02-01 2019-08-08 Tokamak Energy Ltd Partially-insulated hts coils
EA039430B1 (ru) * 2018-11-19 2022-01-26 Токемек Энерджи Лтд Высокотемпературная сверхпроводящая обмотка возбуждения

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2254633C1 (ru) * 2003-10-27 2005-06-20 Российский научный центр "Курчатовский институт" Способ изготовления сверхпроводящих обмоток (варианты)
GB2590633A (en) * 2019-12-20 2021-07-07 Tokamak Energy Ltd HTS linked partial insulation for HTS field coils

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01321605A (ja) * 1988-06-23 1989-12-27 Furukawa Electric Co Ltd:The 酸化物系セラミックス超電導体コイルの製造方法
JPH0221512A (ja) * 1988-07-08 1990-01-24 Sumitomo Electric Ind Ltd 酸化物超電導体
JP3386942B2 (ja) * 1995-10-30 2003-03-17 株式会社日立製作所 酸化物超電導コイル及びその製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019150123A1 (en) * 2018-02-01 2019-08-08 Tokamak Energy Ltd Partially-insulated hts coils
CN112041947A (zh) * 2018-02-01 2020-12-04 托卡马克能量有限公司 部分绝缘hts线圈
AU2019214510B2 (en) * 2018-02-01 2021-04-08 Tokamak Energy Ltd Partially-insulated HTS coils
US11101060B2 (en) 2018-02-01 2021-08-24 Tokamak Energy Ltd Partially-insulated HTS coils
EA039430B1 (ru) * 2018-11-19 2022-01-26 Токемек Энерджи Лтд Высокотемпературная сверхпроводящая обмотка возбуждения

Also Published As

Publication number Publication date
CA2253682A1 (fr) 1999-06-04
FR2772180B1 (fr) 2000-01-14
NO985654L (no) 1999-06-07
FR2772180A1 (fr) 1999-06-11
NO985654D0 (no) 1998-12-03
JPH11260628A (ja) 1999-09-24
EP0921535A3 (de) 1999-06-23

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