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1. 发明专利

JPS6022497A POWER SOURCE 失效
公开(公告)号：JPS6022497A
公开(公告)日：1985-02-04
申请号：JP12794683
申请日：1983-07-15
申请人： HITACHI LTD
发明人： KINOSHITA MITSUO , ARITA SETSUO , MIKAWA KOUJI , ITOU TETSUO , SHIROICHI HISATOKU
IPC分类号： H02P27/06 , G21D3/04 , H02J9/06 , H02P5/74
摘要： PURPOSE:To continuously supply a voltage in response to a load even when a main power source is failed by connecting the first voltage controller to a main power source and the second voltage controller to a spare power source, and selecting them via a switch having diodes. CONSTITUTION:Rectifiers 41A, 41B of the first voltage controller are connected to a bus W, inverters 42A, 42B are connected via diodes 70A, 70B, a DC/DC converter 51 is connected to a storage battery 50, the output is connected via diodes 52A, 52B to inverters 42A, 42B, thereby driving motors 8A, 8B. Only a main power source W is used at the normal time and only the storage battery 50 to is used at the main power failure time by the switching operations of diodes 52A, 52B, 70A, 70B. Accordingly, the power source can be automatically switched at the power interruption time without almost varying the frequency and voltage level in a simple construction.

2. 发明专利

JPS5814938A METHOD FOR CONTROLLING GRANULATING MACHINE 失效
公开(公告)号：JPS5814938A
公开(公告)日：1983-01-28
申请号：JP11217781
申请日：1981-07-20
申请人： HITACHI LTD
发明人： KINOSHITA MITSUO , MIKAWA KOUJI , CHINO KOUICHI
IPC分类号： B01J2/22 , B30B11/16 , C30B15/26
摘要： PURPOSE:To eliminate the irregularity of strength of a pellet, in granulation due to a screw feeder, by regulating the rotary number of the screw feeder by operating compression molding force form the number of the rotations of a roll to maintain compression molding force constant. CONSTITUTION:In a granulating machine for subjecting a powder to compression molding, the rotary number N of a roll 2 is applied to a function generator 20 to issue a value Wo/N during idle operation. On the other hand, power W of a roll motor 6, the roll rotary number N and the output from the function generator 20 are applied to a net molding force operator 21 to operate (W-Wo)/N. This value is applied to a feeder rotary number operator 23 to determine the rotary number of the screw feeder 4 so as to be coincided with the objective value of a net molding force setting instrument 23. By this control method, the value (W-Wo)/N can be controlled so as to be coincided with the objective value enen if the roll rotation number is varied and, therefore, the molding force of the powder is made constant and the strength lowering of a pellet can be prevented.

3. 发明专利

JPS56120995A CONTROL METHOD OF RADIOACTIVE WASTE PROCESSING SYSTEM 失效
公开(公告)号：JPS56120995A
公开(公告)日：1981-09-22
申请号：JP2398180
申请日：1980-02-29
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , SATOU TAKAO
IPC分类号： G21F9/06 , G21F9/00 , G21F9/04 , G21F9/08 , G21F9/30

4. 发明专利

JPS5388779A REDIOACTIVITY MONITORING DEVICE 失效
公开(公告)号：JPS5388779A
公开(公告)日：1978-08-04
申请号：JP241877
申请日：1977-01-14
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , KAJIYAMA SHIGERU
IPC分类号： G01T1/167 , G01T7/10
摘要： PURPOSE:To reduce the size of a radioactive monitoring device by reducing the size of a turntable without lowering the detecting sensitivity by using odd number of collectors at every other internal in means for measuring the radioactive density of radioactive iodine or the like automatically.

5. 发明专利

JPS5330985A CONTROLLER FOR LIQUIDIZING AND DISTILLING APPARATUS 失效
公开(公告)号：JPS5330985A
公开(公告)日：1978-03-23
申请号：JP10485976
申请日：1976-09-03
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MIKAWA KOUJI , HIRABAYASHI SABUROU
IPC分类号： F25J3/04
摘要： PURPOSE:To decrease impurity concentration of cleaned gas in an emergency by installing control means for increasing or decreasing heat quantity which is added to condensed liquid at the bottom of distilling column correspondingly to the rise or fall of liquid level of cooling medium contained in a condensing means set in the distilling column.

6. 发明专利

JPS525047A CONTROL DEVICE OF CENTRIFUGAL THIM FILM DRYER 失效
公开(公告)号：JPS525047A
公开(公告)日：1977-01-14
申请号：JP8079175
申请日：1975-07-02
申请人： HITACHI LTD
发明人： MIKAWA KOUJI
IPC分类号： B01D1/22 , F26B5/08 , G21F9/00 , G21F9/08
摘要： PURPOSE:To minimize contamination of solid part of material or ion and prevent finished goods from liquidying,to improve efficiency.

7. 发明专利

JPS58166671A PRESSURE CONTROL METHOD OF FUEL CELL POWER GENERATING SYSTEM 失效
公开(公告)号：JPS58166671A
公开(公告)日：1983-10-01
申请号：JP4951282
申请日：1982-03-27
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： OOSHITA IKUTO , MIKAWA KOUJI
IPC分类号： H01M8/04
摘要： PURPOSE:To stabilize the operation of a compressor and prevent the generation of surging by detecting load current of a fuel cell and decreasing the number of rotations and discharge pressure of a compressor which supplies oxidizing gas when the load current was decreased. CONSTITUTION:Fuel supplied to a reaction part 22 of a fuel reformer 20 is reformed with heat of a combustion room 21, and supplied to a fuel room 12 of a fuel cell, and air from a compressor 31 is supplied to an air room 11 to react, and the electric power is supplied to a load 20. Unreacting fuel is burned in the combustion room 21 and part of it is supplied to a gas turbine. The current detecting value of a load 40 is inputted to a control system 120, and to control flow rate setting values B1-B4 by following the load, and to control pressure setting values C1-C3. By this process, when the load current was decreased, the number of rotations and discharge pressure of the compressor are decreased. Therefore, when the load was decreased, the generation of surging in the compressor is prevented, and operation is stabilized.

8. 发明专利

JPS58137974A SODIUM-SULPHUR CELL SYSTEM 失效
公开(公告)号：JPS58137974A
公开(公告)日：1983-08-16
申请号：JP1963582
申请日：1982-02-12
申请人： HITACHI LTD
发明人： KIKUCHI JIYUN , KAWAMURA FUMIO , IZUMIDA TATSUO , MIKAWA KOUJI , YUSA HIDEO
IPC分类号： H01M10/39
摘要： PURPOSE:To facilitate taking out and cleaning of active masses in both electrodes by making a cell an a loop construction and transferring active masses by using an inactive gas, and installing cleaning systems in between. CONSTITUTION:When power is decreased during charge-discharge cycling, a valve 33 is opend, and argon gas is fed to a unit cell 35 from a bomb 31 to recover molten sodium 34 and a sulphur mixture 37 in a sodium tank 26 and a sulphur tank 30 respectively. Then the sodium tank 26 and the sulphur tank 30 are pressurized with argon gas 31 through a valve 32, and thereby impurities in molten sodium which is an anode active mass are removed with a cold trap 38 and the molten sodium is fed to the unit cell 35 again, and impurities in sulphur mixture which is a cathode active mass are removed with a zirconium filter 38 and the molten sulphur is returned to the unit cell 35. By this process, since active masses in both electrodes are purified, almost same electric power as an initial stage is obtained.

9. 发明专利

JPS5834575A FUEL-CELL GENERATION SYSTEM 失效
公开(公告)号：JPS5834575A
公开(公告)日：1983-03-01
申请号：JP13030081
申请日：1981-08-21
申请人： HITACHI LTD
发明人： MIKAWA KOUJI
IPC分类号： H01M8/04 , F24D11/00 , H01M8/06
摘要： PURPOSE:To control the discrepancy between an electric-power load pattern and a hot- water-supply load pattern by temporarily storing heat generated in a fuel cell so as to absorb the variation of the generated heat which accompanies the load variation of a fuel cell, and warming supply water with the accumulated heat. CONSTITUTION:A fuel such as naphtha or methane, and steam used for reformation are supplied from 92 and 114 and sent into the reaction chamber 32 of a reformer 30. In a shift converter 40, carbon monoxide produced in the reformer 30 reacts with steam to be converted into hydrogen and carbon dioxide gas, which are supplied through 95 into the anodic chamber 15 of a fuel cell 10. On the other hand, air is compressed to a given pressure by means of a compressor 21, and supplied through 81 into the cathodic chamber 11 of the fuel cell 10. In the fuel call 10, voltage develops between a cathode 12 and an anode 14 due to electrochemical reaction, and electric power is released through electric-power lines 71. Since the the temperature of the fuel cell 10 tends to increase due to Joule heat, which develops in the cell 10 when a current is fed to the cell 10 by connecting a load to the cell 10, the heat of the cell 10 is taken out and delivered into a regenerator container 50 by supplying a heat medium 121 into a cooling part 16.

10. 发明专利

JPS5823169A FUEL CELL POWER GENERATING EQUIPMENT AND ITS OPERATION 失效
公开(公告)号：JPS5823169A
公开(公告)日：1983-02-10
申请号：JP12078681
申请日：1981-08-03
申请人： HITACHI LTD
发明人： MIKAWA KOUJI
IPC分类号： H01M8/04 , H01M8/06
摘要： PURPOSE:To absorb variation of generated heat causing load variation of a fuel cell and heat with stored heat to generate quickly power when required by storing temporarily the heat generating with the fuel cell or hydrogen generating equipment. CONSTITUTION:Exhausted gases 72, 85 from a fuel cell 10 are supplied to condensers 60, 61, wherein moisture is condensed, then the gases are led to a burner 31 of a reformer 30 through pathes 86, 73 to burn. A part of combustion gas 90 is supplied to a heat exchanger of a heat storing tank 50, exhaust energy is stored in the heat storing tank 50. Reaction heat in a shift convertor 40 is taken out with a heat medium which is circulated with a pump 53, and stored in the heat storing tank 50. The heat generated in the fuel cell is taken out with a heat medium in a cooling place 16 to store in the heat storing tank. When heat generating amount in the fuel cell is small for example, in a low load or in waiting time, the heat stored in the heat storing tank 50 is given to the fuel cell with the heat medium 110 to heat the fuel cell.

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