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1. 发明专利

JP2511942B2 失效
公开(公告)号：JP2511942B2
公开(公告)日：1996-07-03
申请号：JP6383787
申请日：1987-03-20
申请人： HITACHI LTD
发明人： OGATA HISANAO , NEMOTO TAKEO , SAEKI MITSURU
IPC分类号： H01L39/04 , A61B5/055 , A61B10/00 , F25D3/10 , G01R33/20 , H01F6/04

2. 发明专利

JPH0574225B2 失效
公开(公告)号：JPH0574225B2
公开(公告)日：1993-10-18
申请号：JP6419290
申请日：1990-03-16
申请人： HITACHI LTD
发明人： NEMOTO TAKEO , OGATA HISANAO , FUJIOKA KAZUMASA , TAMURA NAOYUKI
IPC分类号： G01N25/00 , G01R31/26 , H01L21/66

3. 发明专利

JPH04362283A CRYOPUMP 失效
公开(公告)号：JPH04362283A
公开(公告)日：1992-12-15
申请号：JP13880991
申请日：1991-06-11
申请人： HITACHI LTD
发明人： SAHO NORIHIDE , NEMOTO TAKEO , OGATA HISANAO , KAMIIDE YASUO , YAMASHITA YASUO
IPC分类号： F04B37/08
摘要： PURPOSE:To secure proper regenerative operation and reduce the arrangement space of a shutter mechanism by installing a shutter which is shiftble between a gas inlet surface and the inner-most wall surface, in a cryopump equipped with a cryopanel and a radiation heat shielding body. CONSTITUTION:A cryopump is arranged in a vacuum container, and a front surface frame 38 forms an inlet surface 37 for exhaust gas. A cryopanel 22 which condenses exhaust gas and traps it is cooled by the liquid helium which naturally circulates inside. Further, a louver 29, front surface heat sealing plates 30 and 31, back surface heat shield plate 31, and a side surface heat shielding plate 34 are cooled by the liquid nitrogen which naturally circulates in a pipe 7. In this case, the back surface heat shielding plate 33 and the back surface wall of the vacuum container are connected by a cylindrical pipe 39 having a small heat conductivity, and the held heat shielding pipe 41 of a shutter 40 is shifted in the cylindrical pipe 39. The shutter 40 is retreated to the innermost part in the exhaust of the cryopump, and closes an inlet surface 37 in regeneration.

4. 发明专利

JPH04294506A DEVICE ADAPTING SUPERCONDUCTING MAGNET 失效
公开(公告)号：JPH04294506A
公开(公告)日：1992-10-19
申请号：JP5996191
申请日：1991-03-25
申请人： HITACHI LTD
发明人： HATTORI TOSHIO , AOYAMA HIROSHI , FUKUSHI YOSHISHIGE , SHIMIZU TOSHIO , OGATA HISANAO , NEMOTO TAKEO , KAWAI SUEO , SUZUKI FUMIO , SONOBE TADASHI
IPC分类号： H01F6/00
摘要： PURPOSE:To form the load supporting body of a device adapting a superconducting magnet to a shape which is balanced in rigidity against loads applied in each direction. CONSTITUTION:A load supporting body 3 is fitted to a fitting pedestal 19 fitted to a helium container 2 and the pedestal 20 is coupled with an outer tank 6. A liquid nitrogen container 21 which is also used as a radiation shield is coupled with the nitrogen temperature section 4 of the supporting body 3.

5. 发明专利

JPH04161770A LIQUEFACTION MACHINE 失效
公开(公告)号：JPH04161770A
公开(公告)日：1992-06-05
申请号：JP28426790
申请日：1990-10-24
申请人： HITACHI LTD
发明人： SAHO NORIHIDE , NEMOTO TAKEO , OGATA HISANAO
IPC分类号： F25B9/00 , F25B43/04
摘要： PURPOSE:To prevent an amount of liquefaction in a liquefaction machine and an amount of freezing from being reduced by a method wherein an impurity gas adsorption means is disposed in a low pressure circuit in the liquefaction machine. CONSTITUTION:Impurity gas released form a liquid helium tank 14 and an ultra-conductive magnet 15, for example, remaining water in the liquid helium tank, hydrogen gas from within wall, organic gas from adhesive agent used or CO2 gas from within the magnet flow within a low pressure pipe and are heated by the fifth, third and first heat exchangers 12, 9 and 6, gasified and further adsorbed at the adsorption agent, for example, an active carbon in the adsorption devices 17, 18 and 18a disposed at each of the outlets, resulting in that these impurity gases are not condensed or adhered to a high pressure pipe and a heat exchanger and a Jule-Thomson valve. Accordingly, it is possible to prevent a reduction of an amount of liquefaction and a freezing volume of the liquefaction machine without contaminating the heat exchanger and the Jule-Thomson valve.

6. 发明专利

JPH04256A REFRIGERANT SUPPLY DEVICE 失效
公开(公告)号：JPH04256A
公开(公告)日：1992-01-06
申请号：JP28407890
申请日：1990-10-22
申请人： HITACHI LTD
发明人： MIZUMOTO MUNEO , OGATA HISANAO , SONOBE TADASHI
IPC分类号： H02K9/00 , H02K55/04
摘要： PURPOSE:To obtain a refrigerant supply device for a superconducting generator of high reliability by overhanging a rotor point end part, having a hole drilled in the axial center, to it and providing a fold back part, parallel to a center shaft, in an outer jacket of an injection double pipe to coat an overhung part at the point end of a rotor. CONSTITUTION:An overhung part 10, formed of a double pipe enclosed between an inner side pipe and an outer jacket pipe, is provided at the point end of a rotor 6, and the inside is heat-insulated by a vacuum layer. A liquid helium injection pipe 1 is inserted to a center hole 19 of the overhung part 10. A fold back part 9 is provided in the outer jacket part so as to cover the overhung part 10 of the rotor through a gap. Liquid helium injected into the rotor from the injection pipe 1, cools a superconductive winding, and then the helium is divided into two or more parts to be discharged to the outside of a supply/ discharge part.

7. 发明专利

JPH0370960A REFRIGERANT PUMPING MACHINE 失效
公开(公告)号：JPH0370960A
公开(公告)日：1991-03-26
申请号：JP20466789
申请日：1989-08-09
申请人： HITACHI LTD
发明人： MIZUMOTO MUNEO , OGATA HISANAO , OOTAKE SEIJI , SONOBE TADASHI
IPC分类号： F25D3/10
摘要： PURPOSE:To eliminate the need of providing additionally a heat insulation vacuum circular tube and thereby simplifying the structure of a refrigerant pumping machine by constructing helium return flow passages of tubular structures the number of which is equal to the number of systems, and evacuating the interior of a helium pumping machine to which the tubular structures are provided. CONSTITUTION:Liquid helium introduced into a helium pumping machine from a rotary shaft center cools and vaporizes a superconductor coil of a rotor body and thereafter returns back to the helium pumping machine. The returned helium gas passes through a tubular structure 4 and is exhausted to the outside of the helium pumping machine. The respective return gas tubular structures 4 are made equal to each other in their axial lengths to prevent any unbalanced rotation from being produced. Additionally, the interior of a helium pumping machine rotor 2 is evacuated into a heat insulation layer 7, so that the liquid helium is prevented from being vaporized when it is introduced from a shaft center and further a pumping rotor can be prevented from being supercooled by the helium gas when the return helium gas is at a lower temperature than room temperature. The liquid helium flows through the interior of the pipe and is fed to the interior of the rotor. Since a circular tube structure 4 for the helium gas return flow passage is provided in the heat insulator vacuum layer 7, the structure is simple and manufacture of the machine is facilitated.

8. 发明专利

JPH02269954A SELF-RUNNING TYPE INSPECTING DEVICE 失效
公开(公告)号：JPH02269954A
公开(公告)日：1990-11-05
申请号：JP9072189
申请日：1989-04-12
申请人： HITACHI LTD
发明人： OGATA HISANAO , SAHO NORIHIDE , SHIMIZU TASUKU
IPC分类号： G01N29/26 , G01N27/72
摘要： PURPOSE:To detect the material of a underwater partition wall efficiently by remote inspection by mounting or anchoring a detecting device which contains a cooling agent on or to a running body which moves along the underwater partition wall forming a narrow interval. CONSTITUTION:This detecting device consists of the detecting device 4 which contains the cooling agent 26 such as liquid helium and operates underwater and the self-running type running body 5. The running body 5 is equipped with a wheel 8 and wheels 7a and 7b having springs 9a and 9b as pressing mechanisms on both the opposite wall surfaces of a water tank having narrow vertical partition walls 1 and 2, and the detecting device 4 is mounted or anchored. Then the wheels 7a, 7b, and 8 are pressed against both the vertical opposite partition walls by the springs 9a and 9b to an extent where the running body does not fall by gravitation, so the running body 5 can moves freely in the water tank having the narrow vertical partition walls 1 and 2. Further, when the detecting device 4 is anchored to the running body 5, a cable for anchoring is taken up to adjust the floating and sinking state of the detecting device 4, and the running body 5 only moves horizontally.

9. 发明专利

JPH01292644A INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH01292644A
公开(公告)日：1989-11-24
申请号：JP12178788
申请日：1988-05-20
申请人： HITACHI LTD
发明人： MORI HIDEAKI , NAKAJIMA TADAKATSU , OGATA HISANAO
IPC分类号： G11B11/00
摘要： PURPOSE:To enable semipermanent preservation of information by recording the information by drawing patterns with a superconductor and normal conductor of an ordinary temp. and reading the same by an information reader having a means of generating magnetic fields and means of detecting the microchange in the magnetic fields. CONSTITUTION:The superconductor 3 in the irradiated position is broken down and is converted to the normal conductor 4 and the arbitrary information is written if the superconductor 3 which attains a superconducting state at the ordinary temp. or above is used for an information recording medium 1 and when an energy beam such as laser is scanned in compliance with the patterns to be recorded. The superconductor 3 operates to prohibit the passage of the magnetic fields by its Meissner effect and the normal conductor 4 allows the passage of the magnetic fields and, therefore, the change in the magnetic fields is detected by a detector according to the information patterns 2 constituted of the superconductor 3 and the normal conductor 4 if the information reader constituted of the means of generating the magnetic fields and the means of detecting the microchange in the magnetic fields scans on the recording medium 1. The reading of the records is enabled by executing signal processing thereafter. The semipermanent preservation of the information is thus enabled.

10. 发明专利

JPH01164263A ROTOR FOR SUPERCONDUCTIVE ROTATING MACHINE 失效
公开(公告)号：JPH01164263A
公开(公告)日：1989-06-28
申请号：JP31886787
申请日：1987-12-18
申请人： HITACHI LTD
发明人： OGATA HISANAO , MORI HIDEAKI
IPC分类号： H02K9/00 , H02K55/04
摘要： PURPOSE:To improve cooling characteristics by providing a heat exchange fin inside a heat exchange tube and by connecting a heatdissipating mechanism and said heat exchange tube. CONSTITUTION:A rotor for superconductive rotating machine is fitted with a winding support cylinder 1 for housing a winding 2 composed of a superconductive wire in a groove and introduces a refrigerant 3 for making said winding 2 superconductive by a supply pipe 4 from the outside through over a rotating shaft 5. In the inner part of a heat exchange tube 6 connecting the inside and outside of said cylinder 1, a wire gauze 7 is laminated and the outside of said tube is surrounded by an insulating machine 8. Inside said cylinder 1, a heat-dissipating tank 10 with a fin 9 is thermally connected with the heat exchange tube 6, and the outside end of said heat exchange tube 6 is positioned at the protrusion 11 of radial position larger than that of the winding 2 part. Further, a refrigerant passage 13 is formed between an external wall 12 and the winding support cylinder 1, and a pin-hole 14 connects the groove of said winding 2 and the inside of said cylinder 1. Thus, said heat exchange fin 9 exchanges heat with the refrigerant 3, of which temperature has risen, and transmits said heat to the radial center side.

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