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21. 发明专利

JPH01136317A SUPERCONDUCTIVE WIRE FOR PERMANENT CURRENT SWITCH AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH01136317A
公开(公告)日：1989-05-29
申请号：JP29576587
申请日：1987-11-24
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , INABA SHOJI , SAWADA YOICHI , OIZUMI KIYOSHI
IPC分类号： H01B12/02 , H01B13/00 , H01F6/00 , H01H33/00 , H01L39/16
摘要： PURPOSE:To perform sending and receiving of current between a matrix and a filament smoothly and to ensure cutting of the current with high resistance, by alternately arranging a part having small electric resistance and a part having large electric resistance in the matrix. CONSTITUTION:Oxygen-free copper is used for a matrix 3. Many pieces of filaments 2 are embedded in the longitudinal direction of a wire rod. Thus a superconductive wire 1 is formed. Low melting point metal (e.g., In), which is to become a plated part 4, is fused and plated on the superconductive wire. After the fusing and plating, the wire is heated, and In is diffused into Cu in the matrix 3. A high resistance Cu-In alloy part 5 is formed at the part, where In is fused and plated. With this machining steps, the superconductive wire for a permanent current switch, in which the matrixes 3 comprising the oxygen-free copper, whose electric resistance is small, and the Cu-In alloy parts 5 having large electric resistance are alternately formed in the longitudinal direction of the wire, is obtained.

22. 发明专利

JPH01134180A HEAT TRANSFER TUBE FOR ABSORBER 失效
公开(公告)号：JPH01134180A
公开(公告)日：1989-05-26
申请号：JP29126887
申请日：1987-11-18
申请人： HITACHI CABLE
发明人： KAWAMATA OSAMU , OTANI TADAO , MIYAUCHI TOKUO , OIZUMI KIYOSHI
IPC分类号： F25B37/00
摘要： PURPOSE: To form a plurality of grooves extending longitudinally at the exterior of a heat transfer pipe, and many fins at fine pitches among these grooves, and specifying the constitution of these grooves and fins under optimum conditions. CONSTITUTION: When a convection is generated in absorptive liquid over a heat conductive pipe 1, the agitation within a liquid film occurs, and a refrigerant progresses in the depth direction, and the substance shifting capacity improves. On the other hand, in the case of using water - LiBr or the like as a refrigerant - an absorber, an interface activator is added into the absorptive solution, but in case that steam is absorbed hereby, a change occurs in the interface tension of the liquid surface, and a violent marangoni convection occurs. Hereby, absorption capacity improves sharply. From these matters, this heat conductive pipe is provided with a plurality of grooves 2 extending in the longitudinal direction at the long face of itself 1, and many fins 3 at micropitch among these grooves 2, and the height of the fin 3 is made 0.5-1.5 mm, and the pitch of the fin 3 is 0.4-1.5 mm, and the depth of the groove 2 is 0.5-2 mm, and the circumferential interval between the grooves is 3-6 mm.

23. 发明专利

JPS61213495A THERMAL CONDUCTING WALL FOR SINGLE PHASE FLOW 失效
公开(公告)号：JPS61213495A
公开(公告)日：1986-09-22
申请号：JP5500685
申请日：1985-03-19
申请人： HITACHI CABLE
发明人： KAWAMATA OSAMU , SEKI KUNIAKI , NISHIYAMA SHINICHI , OTANI TADAO , OIZUMI KIYOSHI
IPC分类号： F28F1/08 , F28F1/36 , F28F1/40 , F28F1/42
摘要： PURPOSE:To enable a thermal conducting wall having a superior thermal conducting performance and a substantial durability while a pressure loss being restricted by a method wherein several projections having stream lined shape in respect to the flow are regularly arranged as the thermal conducting wall for a single phase flow. CONSTITUTION:A thermal conducting pipe 1 is utilized as a thermal conducting form, a disk 5 having gears at its extremity end is pushed against the pipe from outside so as to align projections 2 along one helical curved line within the pipe. A plurality of helical curved lines may also be provided. In this case, the projection part at the circumferential edge of the gear-like disk 5 has a triangular section and in case of pushing machining operation, the projections 2 formed at the inner wall of the pipe are projected by plastic deformation form the pipe wall having a certain wall thickness under an external force applied from outside of the pipe, so that the inner wall of the pipe is constituted by a smooth curved line. Each of the projections 2 is constituted by the curved line having a large curvature of the cross section upstream side and forms a stream line constituted by the curved line having a low curvature downstream side, and the cross sectional area is decreased keeping the same shape as that of the bottom surface in respect to its direction of height.

24. 发明专利

JPS61208496A EVAPORATION HEAT TRANSFER WALL 失效
公开(公告)号：JPS61208496A
公开(公告)日：1986-09-16
申请号：JP4897085
申请日：1985-03-12
申请人： HITACHI CABLE
发明人： KAWAMATA OSAMU , OTANI TADAO , YOSHIDA HIROMICHI , SASAKI SATOSHI , OIZUMI KIYOSHI
IPC分类号： F28F1/10 , F28F13/18
摘要： PURPOSE:To obtain a heat transfer wall displaying an excellent heat transfer performance even at the time of a low thermal load by providing a large number of minute, thin and long cavities continuous to each other at a minute interval under the surface of a heat transfer wall, and dividing the cavities by a plurality of grooves intersecting the cavities each having a depth which is at least identical with the bottom surface of each cavity, and opening the cavities by openings different from holes. CONSTITUTION:In a case where a thermal load is small, growth and separation of a vapor foam is suppressed and hence the pressure variation quantity of the vapor within cavities 2 is small. With holes 5 having a large wave path resistance, the suction of liquid is suppressed. for this reason, large and small holes 5 are formed, and as if suction of the liquid 8, and growth and separation of the vapor foam 7 were allotted in roles, heating is actively carried out at the time of a low load. As for the above-mentioned heat transfer wall, it has holes 5 formed at the cavity ceiling part and large holes 6 used as outlet and inlet ports.

25. 发明专利

JPH02301912A ALLOY SUPERCONDUCTOR WIRE 失效
公开(公告)号：JPH02301912A
公开(公告)日：1990-12-14
申请号：JP12328189
申请日：1989-05-17
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , INABA SHOJI , SAWADA YOICHI , KURUMISAWA YASUHIRO , OIZUMI KIYOSHI
IPC分类号： B22D19/00 , C22F1/00 , H01B12/10
摘要： PURPOSE:To improve stability without degrading complex machinability by inserting a highly pure aluminum, silver, etc., in the inside of a core of such as NbTi, etc., so as to prevent direct contact with copper. CONSTITUTION:A primary billet prepared by inserting a NbTi alloy tube 2 in a highly pure oxygen-free copper 1 and further inserting a highly pure aluminum 3 in the inside of the tube is drawing-processed in isostatic extrusion to give a NbTi core wire 4. Then, a plurality of NbTi core wires 4 are bond and inserted into a highly pure oxygen-free tube 5 to form a secondary extruded billet and the billet is formed into an alloy superconductor wire by extrusion, drawing-process, and thermal treatment. In the alloy superconductor wire, the highly pure oxygen-free copper 1 composing the NbTi element wire 4 and the highly pure oxygen-free copper tube 5 are contacted with each other and integrated like a matrix 6 and a plurality of NbTi super thin wires 7 in which the highly pure aluminum 3 is inserted are buried in the matrix 6.

26. 发明专利

JPH02174017A CRITICAL CURRENT IMPROVING METHOD FOR COMPOUND SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH02174017A
公开(公告)日：1990-07-05
申请号：JP33069288
申请日：1988-12-27
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , INABA SHOJI , SAWADA YOICHI , KURUMIZAWA YASUHIRO , OIZUMI KIYOSHI
IPC分类号： H01B12/10 , H01B13/00 , H01L39/00
摘要： PURPOSE:To sharply increase the whole current capacity by arranging the first raw material inside the second raw material and heating and diffusing it when two raw materials are combined and heated and diffused to generate a superconducting compound on the boundary area of both raw materials. CONSTITUTION:When a single-core billet 10 is to be formed, the second raw material (Nb) pipe 2A is inserted into a Cu-Sn-Ti alloy pipe 1A, for example, and the first raw material 1B is inserted into the second raw material pipe 2A to form a composite billet. When the first raw material exists not only on the outer periphery 1A of the second raw material 2A but also in its inside 1B, the compression distortion at the time of thermal shrinkage is increased, and the effect that the bending and tensile distortion are offset and mitigated when wound into a coil is increased. A superconducting compound is also generated in the boundary area between the inside first raw material 1B and the second raw material 2A, and the effective cross section area of the superconducting compound in a superconducting wire is increased. The critical current value and the current capacity resulting therefrom can be sharply improved as a whole.

27. 发明专利

JPH01130424A MANUFACTURE OF SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH01130424A
公开(公告)日：1989-05-23
申请号：JP28899587
申请日：1987-11-16
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , INABA SHOJI , SAWADA YOICHI , OIZUMI KIYOSHI
IPC分类号： H01B12/02 , H01B13/00
摘要： PURPOSE:To prevent production of diffusion products by mutual diffusion of superconductive wires and stabilizer, breakage of a NbTi filament, and necking by forming a thin diffusion preventing layer on the surface of the stabilizer contacting the superconductive wire. CONSTITUTION:A thin layer 8 of diffusion preventing material of Nb, for example, is formed on the inner side of a tube 7 of stabilizer of high purity oxygen free copper, for example, by electroplating, flame coating, or deposition. Into the tube 7 of high purity oxygen free copper having the thin layer 8 of Nb formed inside is inserted a rod 5 of superconductive material of NbTi alloy, for example, and the diameter is reduced to a predetermined size by static water pressure extrusion or the like to form a single wire. A predetermined number of such single wires are embedded in oxygen free copper and the diameter is reduced to a predetermined size to form a superconductive wire. Production of a diffusion layer of both materials through the extrusion work and heat processes in the middle can thus be securely prevented.

28. 发明专利

JPS645944A PRODUCTION OF HIGH TEMPERATURE SUPERCONDUCTOR 失效
公开(公告)号：JPS645944A
公开(公告)日：1989-01-10
申请号：JP15939287
申请日：1987-06-26
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , INABA SHOJI , SAWADA YOICHI , TAZAKI YOSHIO , OIZUMI KIYOSHI
IPC分类号： C04B35/00 , C01G1/00 , C04B35/45 , H01B12/00 , H01B13/00 , H01L39/12
摘要： PURPOSE:To obtain a high temperature superconductor having a great current capacity by orienting superconducting powder in a direction exhibiting superconductivity by allowing the superconducting powder to be present in a magnetic field at a temp. where said powder exhibits superconductivity, then subjecting the powder to compression-molding, sintering, etc. CONSTITUTION:A compound body obtd. by mixing components for forming a perovskite type superconductor, for example, powder of Y, Ba, CuO, in specified proportions is sintered, and a superconductor is produced by pulverizing the sintered product, mixing the pulverized product, followed by compression and sintering, etc. Superconducting powder obtd. by pulverizing said superconductor, is then oriented in a direction exhibiting superconductivity by allowing the powder to be present in an appropriate magnetic field at a temp. where the superconducting powder exhibits superconductivity, for example, at the temp. of the b.p. of liquid N2. The obtd. superconductor treated by this process is discharged from the magnetic field as it is to obtain thus a desired high temp. superconductor after compression-molding, sintering, etc. the discharged material.

29. 发明专利

JPS63306370A HEAT TRANSFER TUBE FOR ABSORBER 失效
公开(公告)号：JPS63306370A
公开(公告)日：1988-12-14
申请号：JP13936287
申请日：1987-06-03
申请人： HITACHI CABLE
发明人： KAWAMATA OSAMU , OTANI TADAO , SAWADA ATSUSHI , OIZUMI KIYOSHI
IPC分类号： F28F1/12 , F25B37/00

30. 发明专利

JPS62263821A MANUFACTURE OF INNER SURFACE GROOVED TUBE 失效
公开(公告)号：JPS62263821A
公开(公告)日：1987-11-16
申请号：JP10811486
申请日：1986-05-12
申请人： HITACHI CABLE
发明人： KAWAMATA OSAMU , OTANI TADAO , KAGAWA MANABU , OIZUMI KIYOSHI , SHINOHARA YOSHIHIRO , TANNO YUKITERU
IPC分类号： B21C1/22 , B21D53/06
摘要： PURPOSE:To stabilize the manufacturing conditions and to reduce the product cost by rotating rolls or balls in the reverse direction against the rotating direction of a plug for the manufacture of inner surface grooved tubes having specific shaped and sized fins formed on the inner surface. CONSTITUTION:As for manufacture of inner surface grooved tubes having fins whose height hf is more than 0.8 times the bottom width W1 and the top angle alphais less than 50 deg., the rotating direction of rolls or balls 1 is reversely set against the rotating direction of a working plug 4 during working and a tube stock 6 is drawn. In that time, the plug 4 is rotated in the direction of the arrow by the deformation resistance of the tube stock 6 and rolls or balls 1 are rotated in the reverse direction against that of the plug 4 to reduce a strong shear force acting on the fins. In that method, the manufacturing conditions are stabilized and the product cost is reduced because wear of the plug 4 and occurrence of frictional heat are restrained.

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