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公开(公告)号：JPH09283320A
公开(公告)日：1997-10-31
申请号：JP8789696
申请日：1996-04-10
申请人： FUJI ELECTRIC CO LTD
发明人： YAMADA HISAO , TAKITA KIYOSHI
摘要： PROBLEM TO BE SOLVED: To reduce the electric resistance of a current lead and to reduce also variations of the electric resistance even when the current lead is supplied with alternating current. SOLUTION: A superconducting electromagnet is housed in a thermal insulating container with refrigerant liquid. Ends of one side of several powder feeders 10 are connected as a set to the superconducting electromagnet. Ends of the other side of the powder feeders 10 are drawn out of the contained. Several wires which exhibit lower thermal conductivity than the power feeders 10 are placed in parallel to the powder feeders to from a current lead 6. The several wires 12 are all tied to form a wire bundle 14, The power feeders 10 are placed on the side of the perimeter of the wire bundle 14.
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公开(公告)号：JPH09260133A
公开(公告)日：1997-10-03
申请号：JP7160696
申请日：1996-03-27
申请人： FUJI ELECTRIC CO LTD
发明人： IGA GORO
摘要： PROBLEM TO BE SOLVED: To provide a current lead with a simple set-up and an excellent cooling characteristic. SOLUTION: In a superconductive current lead with a current-carrying part consisting of a cylindrical oxide superconductor 14 reinforced with an insulated cylinder 17 and being arranged in a refrigerant gas, an outer diameter of the insulated cylinder 17 in formed slightly larger than inner diameter of the oxide superconductor 14 and the insulated cylinder 17 is provided with a slit 19 making a C-shaped cross section of the insulated cylinder 17, further grooves 18 are formed on the perimeter of the insulated cylinder 17 and the insulated cylinder 17 is fitted into the inside of the oxide superconductor 14. Also, refrigerant gas in made to flow in the arrow direction 21 into the grooves 18.
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105.发明专利
公开(公告)号：JPH09231840A
公开(公告)日：1997-09-05
申请号：JP3667796
申请日：1996-02-23
申请人： HITACHI CABLE
发明人： SATO JUNICHI , SASAOKA TAKAAKI , KUMA SHOJI
摘要： PROBLEM TO BE SOLVED: To provide selectability for the mechanical and thermal properties and lessen the electric loss by forming an intended electroconductive member so that it contains at least a sort of oxide superconductor, and using it within a specified range of resistance. SOLUTION: An electrocinductive member using an oxide superconductive material should favorably be used in the resistance range 10 -10 Ω.m as the low resistance-superconductive condition, but it is still more preferably to be used in the range 10 -10 Ω.m to exhibit a smaller resistance than that of non-oxygen copper at room temp. (300K), or in the range 10 -10 Ω.m to exhibit a smaller resistance than that of oxygen-free copper at 77K. The discussion does not destructively apply to such an oxide superconductive material of Cu series containing Bi, but to any which has a high crystal current density and whose amperage able to achieve the low resistance condition is large.
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公开(公告)号：JP2647391B2
公开(公告)日：1997-08-27
申请号：JP23300487
申请日：1987-09-17
申请人： FUJITSU KK
发明人： TAMURA YASUTAKA
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公开(公告)号：JPH09219118A
公开(公告)日：1997-08-19
申请号：JP2366196
申请日：1996-02-09
申请人： HITACHI LTD
发明人： KOMINAMI SHINYA , MITA REEKO
摘要： PROBLEM TO BE SOLVED: To suppress the reduction of the critical current value owing to the oxidation of a superconducting wiring in a high temperature processing, by providing one of an aluminum oxide film, a magnecium oxide film, a zirconium oxide, and the like, on the upper surface of a superconductor. SOLUTION: An insulating liner layer 2 is formed by laminating a silicon dioxide on a silicon substrate 1. Then, a two-layer membrane of niobium and aluminum oxide is formed on the layer 2. Then, a part of the aluminum oxide and the niobium is etched to form the first wiring protective layer 4, and the niobium is etched by making the layer 4 as the mask, so as to form the first superconducting wiring 3. Then, a layer-to-layer insulating layer 5 is formed. After that, the second wiring protective layer 7 which consists of an aluminum oxide is formed. Then, the niobium is etched by making the layer 7 as the mask to form the second superconducting wiring 6. And after that, the silicon dioxide is laminated so as to make into a protective insulating layer 8.
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公开(公告)号：JPH09214008A
公开(公告)日：1997-08-15
申请号：JP1746996
申请日：1996-02-02
发明人： SHIBUYA SHINICHI , MUKOYAMA SUMIO , ISHIKAWA NOBORU , KAJIWARA AKIRA , MORINO HITOO , YOSHIZAWA HIDEJI , HASEYAMA HIDEETSU , KOJIMA MASAHIRO , SATO MAMORU
摘要： PROBLEM TO BE SOLVED: To ensure miniaturization and light weight, ensuring cooling performance by constructing a structure with a superconductor film coated on one side of a substrate and a flow passage member fixed to the other side, and forming a refrigerant flow passage between the substrate and the flow passage member. SOLUTION: A superconductor panel 10 includes a substrate 11, a superconductor film 12 coated on one surface of the substrate 11, and an uneven or corrugated flow passage member 13 fixed to the other surface of the substrate 11 with welding, and a refrigerant flow passage 14 is formed between the substrate 11 and the flow passage member 13. Hereby, the present system is one where the superconductor film 12 is indirectly cooled by a refrigerant flowing in the refrigerant flow passage 14 so that there is no need of a cooling container as in a conventional direct cooling system, and hence a magnetic shielding structure can be made thinner together with miniaturization and light weight. Further, the uneven or corrugated refrigerant flow passage 13 and the substrate 11 are integrally formed so that rigidity is improved and hence the thickness of a material of part serving as the substrate is reduced to improve cooling efficiency.
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公开(公告)号：JPH09162020A
公开(公告)日：1997-06-20
申请号：JP15524896
申请日：1996-06-17
申请人： SEIKO EPSON CORP
发明人： NATORI EIJI
摘要： PROBLEM TO BE SOLVED: To lessen defects in superconductor powder and the internal stress of the powder, to inhibit the reduction in the critical temperature of the powder and at the same time, to enhance the stability of the powder by a method wherein the superconductor powder is manufactured by a melt spray method and this superconductor powder is subjected to heat treatment. SOLUTION: Gd2 O3 fine powder, BaLO3 X fine powder and CuO fine powder are mixed with each other and are dispersed and thereafter, the fine powder is melted in a platinum crucible. Then, a centrifugal spray device is rotated to make a molten material fall on a disc, the molten material is formed into spray and fine powder is obtained. A rationalization of the gain size and gain size distribution of the obtainable powder is easily contrived by adjusting the number of revolutions of the disc. The shape of the powder obtained at this time is formed into roughly a globular shape. Then, in a powdering, which is conducted by a centrifugal spray method, oxygen in the powder is not proper and moreover, as the structure of the powder is not stable, this powder is subjected to annealing treatment in an oxygen atmosphere and superconductor powder is obtained.
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公开(公告)号：JPH09116200A
公开(公告)日：1997-05-02
申请号：JP26964995
申请日：1995-10-18
申请人： FUJI ELECTRIC CO LTD
发明人： TAKITA KIYOSHI
摘要： PROBLEM TO BE SOLVED: To provide a current lead for a superconductive device where the quantity of penetrated heat is reduced effectively by increasing the effective length of a conductor on low temperature side using an oxide superconductor. SOLUTION: A conductor on low temperature side connected conductively through a middle connector 15 to the conductor on high temperature side consisting of well conductive metal is made a long conductor composed of conductor elements 20A and 20B consisting of two pieces of oxide superconductors connected conductively in series through the connecting conductor 21 supported by an outer cylinder. And, as for the connecting conductor 21, a bundle of superconductive lead wires consisting of oxide superconductors are arranged for the conductive member 21A consisting of well conductive metal so as to minimize the generated joule's heat.
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