EP0472197A1 - Bobine supra-conductrice à haute température - Google Patents

Bobine supra-conductrice à haute température Download PDF

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Publication number
EP0472197A1
EP0472197A1 EP91114090A EP91114090A EP0472197A1 EP 0472197 A1 EP0472197 A1 EP 0472197A1 EP 91114090 A EP91114090 A EP 91114090A EP 91114090 A EP91114090 A EP 91114090A EP 0472197 A1 EP0472197 A1 EP 0472197A1
Authority
EP
European Patent Office
Prior art keywords
temperature
superconducting wire
tape
conductor winding
superconductive conductor
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.)
Granted
Application number
EP91114090A
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German (de)
English (en)
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EP0472197B1 (fr
Inventor
Kenichi C/O Osaka Works Sato
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.)
Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of EP0472197A1 publication Critical patent/EP0472197A1/fr
Application granted granted Critical
Publication of EP0472197B1 publication Critical patent/EP0472197B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 present invention relates to a high-temperature superconductive conductor winding, and more specifically, it relates to improvement of properties, particularly the critical current property, of such a high-temperature superconductive conductor winding.
  • a high-temperature superconductive material which is known as a ceramic superconductor, is coated with a metal and strongly worked into a thin tape by deformation processing. It has been recognized possible to attain a high critical current density by combining such deformation processing with heat treatment.
  • a single high-temperature wire is adapted to form two coil portions. Therefore, a throughout portion extending from one coil portion to the other coil portion is required.
  • the critical current density is reduced due to shearing stress which is applied to the throughout portion, since the wire is necessarily twisted at the throughout portion.
  • an object of the present invention is to provide a high-temperature superconductive conductor winding obtained by winding a tape-type high-temperature superconducting wire into the form of a double pancake coil, which can suppress generation of shearing stress in a throughout portion, thereby preventing reduction of the critical current density.
  • the present invention is directed to a high-temperature superconductive conductor winding obtained by winding a tape-type high-temperature superconducting wire, which is combined with a metal, into the form of a double pancake coil. According to the present invention, it is noted that the length of a throughout portion is deeply concerned with the aforementioned shearing stress, as well as the critical current density.
  • the present invention is characterized in that the length of a throughout portion which is provided between pancakes is selected to be at least four times the width of the tape-type high-temperature superconducting wire, in order to solve the aforementioned technical problem.
  • the high-temperature superconducting wire may be covered with an insulating material of an inorganic substance such as mica, glass fiber or quartz fiber, or an organic substance such as tetrafluoroethylene, polyimde resin or formal resin.
  • the inventive high-temperature superconductive conductor winding is preferably impregnated with epoxy resin. More preferably, the epoxy resin contains fiber and/or powder.
  • a high-temperature superconductor contained in the high-temperature superconducting wire may be divided in a multicore state.
  • the length of the throughout portion is selected to be at least four times the width of the tape-type high-temperature superconducting wire, whereby it is possible to suppress generation of shearing stress at the throughout portion, thereby preventing reduction of the critical current density caused by such shearing stress.
  • the high-temperature superconducting wire is preferably provided with an insulating coat, so that the same can be directly wound into a coil with no specific insulating material.
  • the high-temperature superconductive conductor winding according to the present invention is preferably impregnated with epoxy resin, so that the winding is resistant against stress which may be applied thereto in preparation of such a winding or during excitation.
  • the epoxy resin contains fiber and/or powder, so that the winding is further resistant against the aforementioned stress.
  • the high-temperature superconductor which is contained in the high-temperature superconducting wire is preferably divided in a multicore state, so that the high-temperature superconductor is improved in strain resistance and can be wound with no problem after sintering.
  • Figs. 1 and 2 illustrate a high-temperature superconductive conductor winding 1 according to an embodiment of the present invention.
  • Fig. 1 is a front elevational view
  • Fig. 2 is a top plan view.
  • This high-temperature superconductive conductor winding 1 is formed by winding a tape-type high-temperature superconducting wire 2, which is combined with a metal, on a cylindrical spool 3 into the form of a double pancake coil.
  • the single tape-type high-temperature superconducting wire 2 is wound on the spool 3 from its inner peripheral side to form an upper pancake, i.e., a first coil portion 4.
  • a throughout portion 5, which is connected with the beginning end of the first coil portion 4, is guided to obliquely downwardly extend on the spool 3.
  • the high-temperature superconducting wire 2 is then wound on the outer peripheral surface of the spool 3 from the inner peripheral side inversely to the first coil portion 4, thereby forming a lower pancake, i.e., a second coil portion 6.
  • clearances are defined along the first and second coil portions 4 and 6 due to formation of the throughout portion 5, while spacers 7 and 8 are inserted to absorb such clearances.
  • flanges are generally formed on both end portions thereof.
  • length of the throughout portion indicates the length of the center line of the throughout portion 5, shown in Fig. 1, in a part exposed from the first and second coil portions 4 and 6.
  • Oxides or carbonates containing Bi, Pb, Sr, Ca and Cu were so mixed that these elements were in composition ratios of 1.82:0.43:2.01:2.22:3.03, and this mixture was heat treated to prepare powder having a 2212 phase being composed of Bi, Pb, Sr, Ca and Cu substantially in the ratios of 2:2:1:2, and non-superconducting phases.
  • This powder was degassed under a decompressed atmosphere of 2 Torr at 700°C for 3 hours.
  • the as-formed powder was filled into silver pipes. 1296 such silver pipes were charged into a large silver pipe of 12 mm in outer diameter and 10 mm in inner diameter, which in turn was drawn into an outer diameter of 1 mm and then rolled into a thickness of 0.18 mm.
  • the as-formed tape-type wire was heat treated at 840°C for 50 hours, and then rolled into a tape-type wire of 4 mm in width and 0.15 mm in thickness. This tape-type wire was then heat treated at 840°C for 50 hours.
  • This tape-type wire was coated with a formal resin film of 0.1 mm in thickness and wound on a bobbin of 15 mm in outer diameter, to prepare a double pancake coil so that each pancake had ten turns.
  • Some samples of such double pancake coils were prepared with throughout portions of various lengths, to measure J C,coil /J CO (critical current density in the coil form/critical current density of the wire itself).
  • Table 1 shows the results. Table 1 Length of Throughout J C,coil /J CO 2.7 x width 0.57 3.5 x width 0.74 4.3 x width 0.93 6.1 x width 0.95
  • a tape-type wire of 4.3 mm in width and 0.14 mm in thickness was prepared in a similar manner to Example 1, and coated with a polyimide resin film in place of the formal resin film, to prepare a double pancake coil which was similar to Example 1. According to Example 2, the coil was impregnated with epoxy resin containing glass fiber.
  • Table 2 shows results of evaluation of the as-formed samples. Table 2 Length of Throughout J C,coil /J CO 2.6 x width 0.59 3.4 x width 0.77 4.5 x width 0.97 6.0 x width 0.98
  • a single-core wire was prepared through steps similar to those of Example 1. This wire was rolled into a thickness of 0.18 mm, coated with quartz fiber, and worked into a double pancake coil, which was heat treated at 840°C for 50 hours.
  • the coil exhibited an excellent critical current density exceeding 90 % of that of the wire itself when the length of the throughout portion was set to be at least four times the width of the wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP19910114090 1990-08-24 1991-08-22 Bobine supra-conductrice à haute température Expired - Lifetime EP0472197B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP223481/91 1990-08-24
JP22348190A JP3309390B2 (ja) 1990-08-24 1990-08-24 高温超電導導体巻線

Publications (2)

Publication Number Publication Date
EP0472197A1 true EP0472197A1 (fr) 1992-02-26
EP0472197B1 EP0472197B1 (fr) 1994-12-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910114090 Expired - Lifetime EP0472197B1 (fr) 1990-08-24 1991-08-22 Bobine supra-conductrice à haute température

Country Status (3)

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EP (1) EP0472197B1 (fr)
JP (1) JP3309390B2 (fr)
DE (1) DE69106080T2 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724273A2 (fr) * 1995-01-27 1996-07-31 Siemens Aktiengesellschaft Dispositif magnétique avec enroulement supraconducteur à refroidissement forcé
US5581220A (en) * 1994-10-13 1996-12-03 American Superconductor Corporation Variable profile superconducting magnetic coil
US5604473A (en) * 1994-10-13 1997-02-18 American Superconductor Corporation Shaped superconducting magnetic coil
EP0786141A1 (fr) † 1994-10-13 1997-07-30 American Superconductor Corporation Bobine magnetique supraconductrice a profil variable
WO2000052781A1 (fr) * 1999-02-26 2000-09-08 Sumitomo Electric Industries, Ltd. Fil supraconducteur a base d'oxyde dote d'un revetement isolant et procede de fabrication
WO2001057888A1 (fr) * 1998-07-23 2001-08-09 Iwate Tokyo Wire Works, Ltd. Cable supraconducteur recouvert
WO2005087532A1 (fr) * 2004-03-09 2005-09-22 Thyssenkrupp Transrapid Gmbh Pole magnetique de vehicules a sustentation magnetique
FR2895802A1 (fr) * 2005-12-30 2007-07-06 Commissariat Energie Atomique Procede et dispositif de creation d'un champ magnetique homogene dans une zone d'interet, notamment pour l'imagerie rmn
EP1829062B1 (fr) * 2005-11-02 2011-02-09 Zenergy Power GmbH Bobine pour creer un champ magnetique
WO2012031790A1 (fr) * 2010-09-06 2012-03-15 Siemens Aktiengesellschaft Bobine supraconductrice à haute température

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008026234A (ja) * 2006-07-24 2008-02-07 Sumitomo Electric Ind Ltd 絶縁不良検出方法および装置
JP2008130785A (ja) * 2006-11-21 2008-06-05 Sumitomo Electric Ind Ltd 超電導コイルおよび該超電導コイルを備えた超電導機器
JP4893301B2 (ja) * 2006-12-28 2012-03-07 住友電気工業株式会社 超電導コイルの製造方法
JP2010093036A (ja) * 2008-10-08 2010-04-22 Sumitomo Electric Ind Ltd 超電導コイル、超電導マグネット、エポキシ樹脂ワニスおよびその製造方法
DE102011079323B3 (de) * 2011-07-18 2013-01-03 Siemens Aktiengesellschaft Supraleitende Spulenanordnung und Verfahren zu deren Herstellung
JP6539024B2 (ja) * 2014-08-08 2019-07-03 住友電気工業株式会社 コイル、及びコイル部品
JP2020047739A (ja) * 2018-09-18 2020-03-26 株式会社東芝 超電導コイル、及び、超電導機器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281737A (en) * 1963-09-26 1966-10-25 Gen Electric Superconductive solenoid
US3813764A (en) * 1969-06-09 1974-06-04 Res Inst Iron Steel Method of producing laminated pancake type superconductive magnets
EP0045604A2 (fr) * 1980-08-05 1982-02-10 Mitsubishi Denki Kabushiki Kaisha Méthode de fabrication d'une bobine superconductrice
US4499443A (en) * 1984-01-31 1985-02-12 The United States Of America As Represented By The United States Department Of Energy High-field double-pancake superconducting coils and a method of winding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281737A (en) * 1963-09-26 1966-10-25 Gen Electric Superconductive solenoid
US3813764A (en) * 1969-06-09 1974-06-04 Res Inst Iron Steel Method of producing laminated pancake type superconductive magnets
EP0045604A2 (fr) * 1980-08-05 1982-02-10 Mitsubishi Denki Kabushiki Kaisha Méthode de fabrication d'une bobine superconductrice
US4499443A (en) * 1984-01-31 1985-02-12 The United States Of America As Represented By The United States Department Of Energy High-field double-pancake superconducting coils and a method of winding

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0786141B2 (fr) † 1994-10-13 2013-10-23 American Superconductor Corporation Bobine magnetique supraconductrice a profil variable
US5581220A (en) * 1994-10-13 1996-12-03 American Superconductor Corporation Variable profile superconducting magnetic coil
US5604473A (en) * 1994-10-13 1997-02-18 American Superconductor Corporation Shaped superconducting magnetic coil
EP0786141A1 (fr) † 1994-10-13 1997-07-30 American Superconductor Corporation Bobine magnetique supraconductrice a profil variable
EP0724273A3 (fr) * 1995-01-27 1996-10-16 Siemens Ag Dispositif magnétique avec enroulement supraconducteur à refroidissement forcé
EP0724273A2 (fr) * 1995-01-27 1996-07-31 Siemens Aktiengesellschaft Dispositif magnétique avec enroulement supraconducteur à refroidissement forcé
WO2001057888A1 (fr) * 1998-07-23 2001-08-09 Iwate Tokyo Wire Works, Ltd. Cable supraconducteur recouvert
WO2000052781A1 (fr) * 1999-02-26 2000-09-08 Sumitomo Electric Industries, Ltd. Fil supraconducteur a base d'oxyde dote d'un revetement isolant et procede de fabrication
EP1096580A1 (fr) * 1999-02-26 2001-05-02 Sumitomo Electric Industries, Ltd. Fil supraconducteur a base d'oxyde dote d'un revetement isolant et procede de fabrication
EP1096580A4 (fr) * 1999-02-26 2006-04-05 Sumitomo Electric Industries Fil supraconducteur a base d'oxyde dote d'un revetement isolant et procede de fabrication
WO2005087532A1 (fr) * 2004-03-09 2005-09-22 Thyssenkrupp Transrapid Gmbh Pole magnetique de vehicules a sustentation magnetique
US7855628B2 (en) 2004-03-09 2010-12-21 Thyssenkrupp Transrapid Gmbh Magnet pole for magnetic levitation vehicles
EP1829062B1 (fr) * 2005-11-02 2011-02-09 Zenergy Power GmbH Bobine pour creer un champ magnetique
WO2007077383A1 (fr) * 2005-12-30 2007-07-12 Commissariat A L'energie Atomique Bobine supraconductrice sous la forme de double galettes pour la creation d ' un champ magnetique homogene dans une zone d ' interet , notamment pour l ' imagerie par rmn
US7952454B2 (en) 2005-12-30 2011-05-31 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and device for generating a homogeneous magnetic field in an area of interest, especially for NMR imaging
FR2895802A1 (fr) * 2005-12-30 2007-07-06 Commissariat Energie Atomique Procede et dispositif de creation d'un champ magnetique homogene dans une zone d'interet, notamment pour l'imagerie rmn
WO2012031790A1 (fr) * 2010-09-06 2012-03-15 Siemens Aktiengesellschaft Bobine supraconductrice à haute température
US20130172196A1 (en) * 2010-09-06 2013-07-04 Wolfgang Nick High-temperature superconductor (hts) coil
US9048015B2 (en) * 2010-09-06 2015-06-02 Siemens Aktiengesellschaft High-temperature superconductor (HTS) coil

Also Published As

Publication number Publication date
JP3309390B2 (ja) 2002-07-29
EP0472197B1 (fr) 1994-12-21
JPH04106906A (ja) 1992-04-08
DE69106080D1 (de) 1995-02-02
DE69106080T2 (de) 1995-05-18

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