US3614301A - Superconducting conductor - Google Patents
Superconducting conductor Download PDFInfo
- Publication number
- US3614301A US3614301A US3663A US3614301DA US3614301A US 3614301 A US3614301 A US 3614301A US 3663 A US3663 A US 3663A US 3614301D A US3614301D A US 3614301DA US 3614301 A US3614301 A US 3614301A
- Authority
- US
- United States
- Prior art keywords
- tube
- conductor
- superconducting
- superconducting conductor
- aluminum
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/20—Permanent superconducting devices
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/825—Apparatus per se, device per se, or process of making or operating same
- Y10S505/884—Conductor
- Y10S505/887—Conductor structure
-
- 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
- Y10T29/49014—Superconductor
Definitions
- ABSTRACT A stabilized superconducting conductor formed Int. Cl H011) 5/00, of a tube of aluminum alloy having at least one wire of super- H01b 7/34 conductive material disposed therein and a sheath of high- Field of Search 174/126, strength material covering the outside of the tube in good 128,128 SC, l5, 15 C; 335/216 thermal and electrical contact with the tube.
- the present invention relates to a stabilized tubular superconducting conductor, preferably consisting of aluminum and having a high-mechanical strength.
- a superconducting conductor consisting of a metal tube having good electrical conductivity at normal temperature, such as aluminum, and in which there are inserted wires or strips of superconducting material, are already known.
- the conductor is kept at a low temperature by circulation of a cryogenic fluid within the tube.
- tubular conductors of the prior art were formed of elements of given lengths which are then joined together.
- the danger of leakage at the connecting joints is considerable and this is totally unacceptable where the conductors are placed in a vacuum while being subjected to an internal pressure.
- the present invention has for its object the provision of a stabilized superconducting conductor having good mechanical strength in the transverse direction and which can be entirely produced by extrusion in lengths as great as a number of kilometers.
- the present invention concerns a superconducting conductor consisting of at least one wire or strip of superconducting material which is disposed within a tube consisting of a material having good electrical conductivity at normal temperature and which wire or strip is substantially parallel to the axis of the tube.
- the conductor is distinguishable in that it is provided with a sheath of high strength material which covers the external surface of the tube and is in good contact with the surface.
- the sheathing preferably consists of an aluminum alloy which can be applied around the tube by a method of extrusion.
- F IG. 1 illustrates a superconducting conductor according to the invention, as seen in transverse section, and
- FIG. 2 illustrates a superconducting conductor as seen in transverse section, in accordance with another embodiment.
- numeral 1 designates a tubular element which preferably consists of aluminum, but which may also consist of any material having, at normal temperature, an electrical conductivity similar to that of aluminum, for example, copper or silver.
- Tube 1 has a substantially square external cross section and a circular internal cross section. It would be possible, without departing from the scope of the invention, to employ a tube 1 having external and internal cross sections of difl'erent form.
- Wires 2 are embedded within the tube 1 substantially parallel to the axis of the tube 1, or the wires 2 may be disposed helically.
- the wires 2 consist of superconducting material such as niobium-zirconium, niobium, tin, lead, niobium-titanium, etc.
- the wires may be replaced by tapes or strips, or all three (wires, tapes and strips) may be used at the same time.
- the wires 2 may also be coated with a thin layer of metal such as indium or copper.
- the superconducting tube 1 and wire 2 assembly is preferably produced by a method of extrusion.
- the central passage 3 within the tube I permits the circulation of a cooling fluid such as liquid helium.
- the tube 1 consists of metals which have a high degree of purity in order to ensure stabilization of the conductor when it operates in the superconductive state.
- the tube 1 is covered by a sheathing 4 consisting of a material having high-mechanical strength.
- the material is preferably metallic and consists of, for example, aluminum alloys of the following types, Au 4, G, AZ 5 G, AZ 8 Gu, etc.
- the aluminum alloy sheathing 4 is positioned around the tube 1 by a method of extrusion, which ensures good thermal and electrical contact with the tube 1.
- Conductors may therefore be constructed of great length, such as, for example, a number of kilometers, without requiring a joint of any form.
- FIG. 2 illustrates the transverse section of a composite conductor formed of six conductors, each of which is similar to that described in FIG. 1, and disposed adjacent one another to form a conductor of rectangular cross section.
- a superconducting conductor consisting of:
Abstract
A stabilized superconducting conductor formed of a tube of aluminum alloy having at least one wire of superconductive material disposed therein and a sheath of high-strength material covering the outside of the tube in good thermal and electrical contact with the tube.
Description
United States Patent Inventor Jean Royet Orsay, France Appl. No. 3,663
Filed Jan. 19, 1970 Patented Oct. 19, 1971 Assignee Compagnie Generale DElectricite Paris, France SUPERCONDUCTING CONDUCTOR Primary Examiner-Lewis H. Myers Assistant Examiner-A. T. Grimley 3 Claims, 2 Drawing Figs Attorney-Sughrue, Rothwell, Mion, Zinn & Macpeak US. Cl 174/126,
174/15, 174/ 128, 174/DIG. 6, 335/216 ABSTRACT: A stabilized superconducting conductor formed Int. Cl H011) 5/00, of a tube of aluminum alloy having at least one wire of super- H01b 7/34 conductive material disposed therein and a sheath of high- Field of Search 174/126, strength material covering the outside of the tube in good 128,128 SC, l5, 15 C; 335/216 thermal and electrical contact with the tube.
ALUMINUM uoum HELIUM HIGH STRENGTH ALUMINUM ALLOY BACKGROUND OF THE INVENTION l. Field of the Invention The present invention relates to a stabilized tubular superconducting conductor, preferably consisting of aluminum and having a high-mechanical strength.
2. Description of the Prior Art A superconducting conductor consisting of a metal tube having good electrical conductivity at normal temperature, such as aluminum, and in which there are inserted wires or strips of superconducting material, are already known. The conductor is kept at a low temperature by circulation of a cryogenic fluid within the tube.
Also known are superconducting conductors of a similar type wherein good mechanical strength is achieved by introducing into the tube strips or wires of material having high mechanical strength, such as steel.
These prior art conductors have the disadvantage that they have poor resistance to mechanical forces developed transverse to the axis of the conductor, because the conductor is reinforced by wires or strips, whose mean direction is perpendicular to the forces.
It has been suggested to substitute a copper or iron tube for the aluminum tube in order to achieve greater strength, however, considerable difficulties are then encountered in the fabrication of the conductor, for example, it becomes very difficult to produce the conductor by the method of extrusion.
In addition, tubular conductors of the prior art were formed of elements of given lengths which are then joined together. The danger of leakage at the connecting joints is considerable and this is totally unacceptable where the conductors are placed in a vacuum while being subjected to an internal pressure.
SUMMARY OF THE INVENTION The present invention has for its object the provision of a stabilized superconducting conductor having good mechanical strength in the transverse direction and which can be entirely produced by extrusion in lengths as great as a number of kilometers.
The present invention concerns a superconducting conductor consisting of at least one wire or strip of superconducting material which is disposed within a tube consisting of a material having good electrical conductivity at normal temperature and which wire or strip is substantially parallel to the axis of the tube. The conductor is distinguishable in that it is provided with a sheath of high strength material which covers the external surface of the tube and is in good contact with the surface. The sheathing preferably consists of an aluminum alloy which can be applied around the tube by a method of extrusion.
BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments are set forth in the following description by way of nonlimiting example and with reference to the accompanying drawings, in which:
F IG. 1 illustrates a superconducting conductor according to the invention, as seen in transverse section, and
FIG. 2 illustrates a superconducting conductor as seen in transverse section, in accordance with another embodiment.
DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings, numeral 1 designates a tubular element which preferably consists of aluminum, but which may also consist of any material having, at normal temperature, an electrical conductivity similar to that of aluminum, for example, copper or silver.
Tube 1 has a substantially square external cross section and a circular internal cross section. It would be possible, without departing from the scope of the invention, to employ a tube 1 having external and internal cross sections of difl'erent form.
As a variant, the wires may be replaced by tapes or strips, or all three (wires, tapes and strips) may be used at the same time. The wires 2 may also be coated with a thin layer of metal such as indium or copper.
The superconducting tube 1 and wire 2 assembly is preferably produced by a method of extrusion. The central passage 3 within the tube I permits the circulation of a cooling fluid such as liquid helium.
The tube 1 consists of metals which have a high degree of purity in order to ensure stabilization of the conductor when it operates in the superconductive state.
In order to ensure that the conductor has good mechanical strength in the transverse direction, the tube 1 is covered by a sheathing 4 consisting of a material having high-mechanical strength. The material is preferably metallic and consists of, for example, aluminum alloys of the following types, Au 4, G, AZ 5 G, AZ 8 Gu, etc.
The aluminum alloy sheathing 4 is positioned around the tube 1 by a method of extrusion, which ensures good thermal and electrical contact with the tube 1. Conductors may therefore be constructed of great length, such as, for example, a number of kilometers, without requiring a joint of any form.
FIG. 2 illustrates the transverse section of a composite conductor formed of six conductors, each of which is similar to that described in FIG. 1, and disposed adjacent one another to form a conductor of rectangular cross section.
What is claimed is:
l. A superconducting conductor consisting of:
a. a tube of a material having an electrical conductivity similar to that of aluminum at normal temperature,
b. at least one wire of superconducting material disposed within and substantially parallel to said tube, and
c. a sheathing of high-strength material covering the external surface of said tube in thermal and electrical contact with said surface.
2. A conductor according to claim 1 wherein said sheathing consists of an aluminum alloy.
3. A conductor according to claim 2 wherein said sheathing is extruded around said tube.
Claims (2)
- 2. A conductor according to claim 1 wherein said sheathing consists of an aluminum alloy.
- 3. A conductor according to claim 2 wherein said sheathing is extruded around said tube.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US366370A | 1970-01-19 | 1970-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3614301A true US3614301A (en) | 1971-10-19 |
Family
ID=21706962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3663A Expired - Lifetime US3614301A (en) | 1970-01-19 | 1970-01-19 | Superconducting conductor |
Country Status (1)
Country | Link |
---|---|
US (1) | US3614301A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767842A (en) * | 1972-02-25 | 1973-10-23 | Commissariat Energie Atomique | Super conducting cable of elemental conductors in a metal matrix within a metallic jacket |
US3890700A (en) * | 1972-08-03 | 1975-06-24 | Siemens Ag | Method for the manufacture of a composite wire with an aluminum core and niobium cladding |
US3946348A (en) * | 1971-03-22 | 1976-03-23 | Bbc Aktiengesellschaft Brown, Boveri & Cie. | Radiation resistant ducted superconductive coil |
US4148129A (en) * | 1976-11-01 | 1979-04-10 | Airco, Inc. | Aluminum-stabilized multifilamentary superconductor and method of its manufacture |
US4711825A (en) * | 1986-04-10 | 1987-12-08 | The United States Of America As Represented By The Secretary Of The Air Force | Composite aluminum conductor for pulsed power applications at cryogenic temperatures |
US4927985A (en) * | 1988-08-12 | 1990-05-22 | Westinghouse Electric Corp. | Cryogenic conductor |
EP0487353A2 (en) * | 1990-11-22 | 1992-05-27 | Kabushiki Kaisha Toshiba | Superconductor wire and method of manufacturing the same |
US20110227677A1 (en) * | 2008-12-16 | 2011-09-22 | Magnifye Limited | Superconducting systems |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3366728A (en) * | 1962-09-10 | 1968-01-30 | Ibm | Superconductor wires |
GB1130464A (en) * | 1966-01-13 | 1968-10-16 | Oerlikon Maschf | Improvements in or relating to superconducting cables |
US3427391A (en) * | 1967-09-20 | 1969-02-11 | Avco Corp | Composite superconductive conductor |
US3440336A (en) * | 1965-10-16 | 1969-04-22 | Siemens Ag | Web-shaped superconductor |
US3472944A (en) * | 1966-05-20 | 1969-10-14 | Imp Metal Ind Kynoch Ltd | Assemblies of superconductor elements |
US3502789A (en) * | 1966-12-02 | 1970-03-24 | Imp Metal Ind Kynoch Ltd | Superconductor cable |
US3527873A (en) * | 1968-12-27 | 1970-09-08 | Atomic Energy Commission | Composite superconducting cable having a porous matrix |
-
1970
- 1970-01-19 US US3663A patent/US3614301A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3366728A (en) * | 1962-09-10 | 1968-01-30 | Ibm | Superconductor wires |
US3440336A (en) * | 1965-10-16 | 1969-04-22 | Siemens Ag | Web-shaped superconductor |
GB1130464A (en) * | 1966-01-13 | 1968-10-16 | Oerlikon Maschf | Improvements in or relating to superconducting cables |
US3472944A (en) * | 1966-05-20 | 1969-10-14 | Imp Metal Ind Kynoch Ltd | Assemblies of superconductor elements |
US3502789A (en) * | 1966-12-02 | 1970-03-24 | Imp Metal Ind Kynoch Ltd | Superconductor cable |
US3427391A (en) * | 1967-09-20 | 1969-02-11 | Avco Corp | Composite superconductive conductor |
US3527873A (en) * | 1968-12-27 | 1970-09-08 | Atomic Energy Commission | Composite superconducting cable having a porous matrix |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3946348A (en) * | 1971-03-22 | 1976-03-23 | Bbc Aktiengesellschaft Brown, Boveri & Cie. | Radiation resistant ducted superconductive coil |
US3767842A (en) * | 1972-02-25 | 1973-10-23 | Commissariat Energie Atomique | Super conducting cable of elemental conductors in a metal matrix within a metallic jacket |
US3890700A (en) * | 1972-08-03 | 1975-06-24 | Siemens Ag | Method for the manufacture of a composite wire with an aluminum core and niobium cladding |
US4148129A (en) * | 1976-11-01 | 1979-04-10 | Airco, Inc. | Aluminum-stabilized multifilamentary superconductor and method of its manufacture |
US4711825A (en) * | 1986-04-10 | 1987-12-08 | The United States Of America As Represented By The Secretary Of The Air Force | Composite aluminum conductor for pulsed power applications at cryogenic temperatures |
US4927985A (en) * | 1988-08-12 | 1990-05-22 | Westinghouse Electric Corp. | Cryogenic conductor |
EP0487353A2 (en) * | 1990-11-22 | 1992-05-27 | Kabushiki Kaisha Toshiba | Superconductor wire and method of manufacturing the same |
EP0487353A3 (en) * | 1990-11-22 | 1992-09-09 | Kabushiki Kaisha Toshiba | Superconductor wire and method of manufacturing the same |
US5442137A (en) * | 1990-11-22 | 1995-08-15 | Kabushiki Kaisha Toshiba | Superconductor wire and method of manufacturing the same |
US20110227677A1 (en) * | 2008-12-16 | 2011-09-22 | Magnifye Limited | Superconducting systems |
US8736407B2 (en) * | 2008-12-16 | 2014-05-27 | Magnifye Limited | Superconducting systems |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3902000A (en) | Termination for superconducting power transmission systems | |
US3754095A (en) | Superconductive cable for carrying either alternating or direct current | |
JP6155195B2 (en) | Superconducting cable connection structure | |
US4103075A (en) | Composite monolithic low-loss superconductor for power transmission line | |
GB1227889A (en) | ||
US3619479A (en) | Electrical conductor of electrically normal conducting metal and superconducting material | |
US3527873A (en) | Composite superconducting cable having a porous matrix | |
CA2122685A1 (en) | High Tc Superconducting Cable Conductor Employing Oxide Superconductor | |
US3614301A (en) | Superconducting conductor | |
US3515793A (en) | Cryogenic polyphase cable | |
US3502783A (en) | Electric cable for polyphase current | |
US3634597A (en) | Conductor system for superconducting cables | |
US3474187A (en) | Superconductive cable construction | |
US3537827A (en) | Flexible superconductive laminates | |
US3643001A (en) | Composite superconductor | |
AU702118B2 (en) | Electric conductors and cables | |
DE1665599B2 (en) | Cryogenic cables for power transmission | |
US3715453A (en) | Cryogenic connection enclosure | |
GB1181449A (en) | Improvements in or relating to thermo compensating electrical conductors. | |
US3736365A (en) | Cryogenic cable | |
US3736656A (en) | Method of manufacturing asymmetrical superconductive cables for carrying either alternating or direct current | |
US3440336A (en) | Web-shaped superconductor | |
US3514524A (en) | Transposed low temperature strip electric cable | |
US3876823A (en) | Electrical conductor made up of individual superconducting conductors | |
US3726985A (en) | Cryogenic cable construction |