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1. 发明专利

JPH08287749A NB3SN COMPOUND SUPERCONDUCTING WIRE MATERIAL 失效
公开(公告)号：JPH08287749A
公开(公告)日：1996-11-01
申请号：JP8568395
申请日：1995-04-11
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： NISHI MASATAKA , TAKAHASHI YOSHIKAZU , TSUJI HIROSHI , YOSHIDA KIYOSHI , IWAKI GENZO , SAKAI SHUJI , KIKUCHI KENICHI , SASAKI KAZUTAKA
IPC分类号： C22F1/00 , H01B12/10 , H01F6/06
摘要： PURPOSE: To provide new Nb3 Sn superconducting wire material which has a low AC loss, a high magnetic field current characteristic, and excellent workability. CONSTITUTION: Cu-Sn alloy is formed into a matrix 1, and between a superconducting complex 3 which is formed by embedding a large number of filaments 2 of Nb or Nb base alloy having a layer of a Nb3 Sn superconducting compound at least on the surface thereof in the matrix 1 and stabilizing material 6 arranged around the superconducting complex 3, a layer 5 of Cu matrix dispersion reinforcing material is arranged on a stabilizing material 6 side and a Ta layer 4 is arranged on a superconducting complex 3 side.

2. 发明专利

JPH0551162B2 失效
公开(公告)号：JPH0551162B2
公开(公告)日：1993-07-30
申请号：JP7193286
申请日：1986-03-28
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： ANDO TOSHINARI , TAKAHASHI YOSHIKAZU , NISHI MASATAKA , SHIMAMOTO SUSUMU , OKA KOICHI , SAKAI SHUJI , KIMURA MORIO
IPC分类号： H01F6/06 , H01F5/08

3. 发明专利

JPS62229806A MANUFACTURE OF SUPERCONDUCTING COIL 失效
公开(公告)号：JPS62229806A
公开(公告)日：1987-10-08
申请号：JP7193286
申请日：1986-03-28
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： ANDO TOSHINARI , TAKAHASHI YOSHIKAZU , NISHI MASATAKA , SHIMAMOTO SUSUMU , OKA KOICHI , SAKAI SHUJI , KIMURA MORIO
IPC分类号： H01F6/06
摘要： PURPOSE:To obtain a superconducting coil having excellent mechanical strength by a method wherein the coil segment, formed by winding a superconducting conductor through an insulating tape on which an epoxy bonding agent is coated on the surface, is stacked through the intermediary of an insulating spacer, a heat treatment is performed thereon in the state wherein compressive force is added from both end faces of the superconducting conductor. CONSTITUTION:Each pancake coil 1 is formed by winding the material 3, obtained by coating an epoxy bonding agent on both surfaces of a polyimide resin tape, in the reguired number of turns on the wide-widthed surface of the superconducting conductor 2 having a plurality of built-in superconducting wires while the material 3 is being adhered temporarily. A plurality of insulated spacers 4 are radially arranged on the substrate 5 of a pressing jig, a pancake coil 1 is placed on one of the spacers 4, and stacking operation is repeated. After the upper plate 6 of the pressing jig has been placed on the insulated spacers 4 located on the top stage, the coil 1 and the insulated spacers 4 are compressed by tightening them until the interval between the substrate 5 and the upper plate 6 becomes the prescribed measurements. When they are heated up under the compressed state, they become hard after the lapse of the prescribed period of time, and the conductor 2 and the insulated tape 3, located in each pancake coil 1, can be adhered firmly and completely.

4. 发明专利

JPH0993800A SUPERCONDUCTING COIL ELECTRIC POWER UNIT 失效
公开(公告)号：JPH0993800A
公开(公告)日：1997-04-04
申请号：JP24296395
申请日：1995-09-21
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： NINOMIYA HIROMASA , TAKAHASHI YOSHIKAZU , KAI TOSHIYA
IPC分类号： G21B1/21 , G21B1/00 , H01F5/00 , H01F6/06 , H02H7/00 , H02J3/28 , H02J15/00 , H02M9/00 , H05H7/04
摘要： PROBLEM TO BE SOLVED: To suppress insulation withstanding voltage low for a superconducting coil by decreasing cut-off voltage at the time of quench protecting action. SOLUTION: In a superconducting coil electric power unit connecting a plurality of superconducting coils 1a to 1f in series to an excitation power supply 2, DC circuit breakers 3a to 3f breaking a circuit at quench time are alternately connected in series to the superconducting coils 1a to 1f, also protection resistors 4a to 4f consuming accumulated energy of the coil are connected in parallel to the DC circuit breakers 3a to 3f, and all the DC circuit breakers are simultaneously actuated at a quench time.

5. 发明专利

JPH06215931A SUPERCONDUCTOR COIL 失效
公开(公告)号：JPH06215931A
公开(公告)日：1994-08-05
申请号：JP435393
申请日：1993-01-13
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： YOSHIDA KIYOSHI , TSUJI HIROSHI , TAKAHASHI YOSHIKAZU , NISHI MASATAKA , ISONO TAKAAKI
IPC分类号： H01F6/00 , H01F6/06 , H01F5/08
摘要： PURPOSE:To enhance electric current density and mechanical strength inside windings by connecting a large number of superconductors In parallel and connecting the connected superconductors to each of mating power sources. CONSTITUTION:A cylinder type is adopted for the shape of a coil while a winding system is designed on a layer winding basis. Four power sources are used for this winding system where four conductors 2 are wound up in the longitudinal direction at the turns of 16, thereby forming a total of 64 turns 16 layers are wound up in the radial direction so that a total number of turns may be 1024 turns. Four conductors 2 are laid out in each layer so that a total of 64 conductors may be used. In this superconductor call designed in this construction, a total 64 superconductors are connected in parallel where an individual power source is connected to each superconductor thus connected. This connection makes it possible to minimize differential potential between the conductors and reduce the number of insulators and enhance the electric current density and mechanical strength of at the winding parts of the superconductor coil.

6. 发明专利

JPH0660747A MULTIPLE STRAND METHOD OF SUPERCONDUCTIVE STRAND 失效
公开(公告)号：JPH0660747A
公开(公告)日：1994-03-04
申请号：JP21306092
申请日：1992-08-10
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： TSUJI HIROSHI , TAKAHASHI YOSHIKAZU , OKUNO KIYOSHI , KOIZUMI NORIKIYO
IPC分类号： D07B3/00 , H01B12/08 , H01B13/00
摘要： PURPOSE:To prevent current distribution unevenness among insulated strands of a large current conductor and improve the critical current density as a whole. CONSTITUTION:To manufacture a large current superconductive conductor by stranding a large number of superconductive strands, the stranding direction is reversed every time one stranding time increases while the times of stranding increase from one to n times.

7. 发明专利

JPH0636627A MANUFACTURE OF NB3AL SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH0636627A
公开(公告)日：1994-02-10
申请号：JP19231992
申请日：1992-07-20
申请人： SUMITOMO ELECTRIC INDUSTRIES , JAPAN ATOMIC ENERGY RES INST
发明人： YAMADA YUICHI , ANDO TOSHINARI , TAKAHASHI YOSHIKAZU , NISHI MASATAKA , TSUJI HIROSHI , NAKAJIMA HIDEO
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To provide a Nb3Al superconducting wire having good characteristics at intense magnetic field. CONSTITUTION:In a manufacturing method of a Nb3Al superconducting wire, the first heat treatment for homogeneously mixing Nb and Al via diffusion applies to a material comprising a complex of Nb or Nb alloy, and Al or Al alloy. After the first heat treatment, the second heat treatment for generating Nb3Al layer, subsequently applies to the material at a higher temperature and in a shorter time than in the first treatment.

8. 发明专利

JPH03274612A MANUFACTURE OF NB3 SN SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH03274612A
公开(公告)日：1991-12-05
申请号：JP7462090
申请日：1990-03-23
申请人： JAPAN ATOMIC ENERGY RES INST , SHOWA ELECTRIC WIRE & CABLE CO
发明人： ANDO TOSHINARI , NISHI MASATAKA , SHIMAMOTO SUSUMU , TAKAHASHI YOSHIKAZU , SUZUKI HIDEMOTO , ICHIHARA MASAMITSU , OGAKI TOSHIHISA , KUMANO TOMOYUKI , NOGUCHI ICHIRO , AOKI NOBUO
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To enable uniform deformation of an Nb group metal tube and improve its characteristic such as critical current density by arranging a copper alloy having big mechanical strength between the Nb group metal tube and a tin group metal in a central part. CONSTITUTION:A plurality of Nb group metal tubes are arranged in a copper or copper alloy matrix, and area reduction processing is applied to a complex body housing a tin group metal wire coated with a copper alloy having big mechanical strength inside said metal tube followed by heat treatment. An Nb radical alloy, to which pure Nb and Ti for improving workability, is used as the material of the Nb group metal tube to be arranged in the matrix. Heat treatment after area reduction is applied within a temperature range from 550 to 755 deg.C. As a copper alloy having big mechanical strength, Ti alloy including (0.1 to 2.0)wt.% of Cu, Sn alloy including (0.1 to 10)wt.% of Cu and Ni alloy including (1.0 to 40)wt. of Cu are used.

9. 发明专利

JPH0225721A THERMOMETER FOR VERY LOW TEMPERATURE 失效
公开(公告)号：JPH0225721A
公开(公告)日：1990-01-29
申请号：JP17666588
申请日：1988-07-15
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： TAKAHASHI YOSHIKAZU
IPC分类号： G01K7/16 , G01K7/36
摘要： PURPOSE:To directly and exactly measure a temperature of a refrigerant by applying a fluctuation magnetic field to a sensor part which is attached to the inside of a very low temperature use refrigerant supply piping, and detecting an eddy current in the sensor part by a pickup coil. CONSTITUTION:A sensor part 1 in which a metal or a semiconductor whose resistivity is varied sensitively in accordance with a temperature is formed in a cylindrical shape is attached to the inside of a very low temperature use refrigerant supply piping 2 by a supporting member 3 consisting of an electrical and thermal insulator. In such a state, the resistivity of the sensor part 1 is measured by applying a fluctuation magnetic field to the sensor part 1 by a fluctuation magnetic field use coil 5 from the outside of the piping 2, and also, detecting an eddy current which is induced in the sensor part 1 by a pickup coil 4, and a temperature is calculated by a processor. In such a way, it is unnecessary to connect a lead wire to the sensor part, it is unnecessary to install a field-through for the lead wire, and danger of a leakage into a vacuum of a refrigerant does not exist.

10. 发明专利

JPS63193409A SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPS63193409A
公开(公告)日：1988-08-10
申请号：JP2255087
申请日：1987-02-04
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： TAKAHASHI YOSHIKAZU , SHIMAMOTO SUSUMU , TSUJI HIROSHI , OKUNO KIYOSHI , HAMASHIMA KOTARO
IPC分类号： H01B12/08
摘要： PURPOSE:To improve stability of a superconductive conductor without increasing AC loss by compressing strand wires for mutually sticking such strand with solder. CONSTITUTION:A surface of a core 1a is applied with a prescribed amount of solder plating 2, and six pieces of surrounding strands are arranged centering about the core 1a for being stranded. Then, the whole is compressed and heated by high-frequency heating or the like to melt solder, with which the core 1a is coated, for sticking the surrounding strands to the core 1a. By compressing each strand 1 including the core 1a in this way, and mutually sticking with the solder 2, a thermal conductive area among respective strands, especially between the core 1a and the surrounding strands 1 is increased so as to sufficiently cool the core 1a also. Further, since the core 1a is electrically connected with the surrounding strands 1, it becomes a flow path of the current even being in a constantly conductive state to be able to reduce calorific value.

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