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31. 发明专利

JPS5281065A REGULATION FOR LIQUID CONCENTRATION APPARATUS 失效
公开(公告)号：JPS5281065A
公开(公告)日：1977-07-07
申请号：JP15777775
申请日：1975-12-29
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , JIYOUGE TOSHIO
IPC分类号： B01D1/00 , C02F1/04 , G21F9/00 , G21F9/08
摘要： PURPOSE:To prevent the lowering of liquid surface, the abnormal rise of concentration and the overload of pump, by equipping apparatus to detect the lowering of liquid surface and the rise tendency of concentration degree of concentrator, at the liquid waste treatment system of atomic power plant.

32. 发明专利

JPS51117172A METHOD OF NEUTRALIZATION OF LIQUID WASTE 失效
公开(公告)号：JPS51117172A
公开(公告)日：1976-10-15
申请号：JP4126575
申请日：1975-04-07
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： SASAKI SADAAKI , MIKAWA KOUJI
IPC分类号： C02F1/66 , B01J49/00 , G21F9/06
摘要： PURPOSE:To neutralize correctly and in a short time, the waste from the reactivation of ion exchange resin used in the desalinator of neuclear power reactors.

33. 发明专利

JPS60133305A OPTICAL POSITION DETECTING DEVICE 失效
公开(公告)号：JPS60133305A
公开(公告)日：1985-07-16
申请号：JP24155783
申请日：1983-12-21
申请人： HITACHI LTD
发明人： NAKAHARA MITSUGI , ITOU TETSUO , MIKAWA KOUJI
IPC分类号： G01B11/00 , G01D5/353
摘要： PURPOSE:To improve reliability in remote position detecting, by providing a material, which generates spatial action, in a movable part, and detecting the position of the movable part based on the degree of modulation of inputted light in an optical fiber part, to which a material receiving the spatial action is attached. CONSTITUTION:Light is modulated as increase or decrease in transmission loss due to the distortion of an optical fiber 9 based on the magnetostriction effect of a magnetostriction material 16 caused by the relative position relationship between a magnet 15 and the magnetostriction material 16. The modulated position detecting signal light 13 is detected by a position detecting circuit 12. The relative position relationship between the magnet 15 and the magnetostriction material 16 with respect to the intensity of the position detecting signal light 13 is determined uniquely. Therefore, the intensity of the position detecting signal 13 is detected by the position detecting circuit 12 and the position of the magnet 15 can be detected by a graph, which is prepared beforehand. Thus the position state of a movable member 2 can be detected in optically high reliability.

34. 发明专利

JPS6086436A WAVEGUIDE TYPE TEMPERATURE DISTRIBUTION METER 失效
公开(公告)号：JPS6086436A
公开(公告)日：1985-05-16
申请号：JP19414783
申请日：1983-10-19
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , KITAURA WATARU
IPC分类号： G01K1/02 , G01K7/36
摘要： PURPOSE:To measure the temperatures of plural positions only by one waveguide by measuring the temperatures of plural magnet setting parts in accordance with the level of a magnetostriction signal. CONSTITUTION:When pulse current is applied to a core in the magnetostriction waveguide 1, magnetostriction is generated by Wiedemann effect of magnets M1-Mn to their magnetic fields, transmitted through the waveguide 1 and reaches to a signal processing circuit part 2. The magnetostriction signal 27 from the waveguide 1 is inputted to a synchronization detecting part 26 in a processing circuit 2 and a storage part 20. A detecting part 26 detects signals S1, S2 and outputs the signals at the time Ts. The storage part 20 stores the magnetostriction signal only for the period Ts. After the completion of the storage, the peaks of the magnetostriction signals S1-Sn are detected by an arithmetic circuit 21 to find out the temperatures. The found temperatures are stored in a storage device 23 and the waveforms are smoothed to find out the temperature distribution along the waveguide 1. Thus, the temperatures of plural positions can be measured only by one waveguide.

35. 发明专利

JPS6082921A POSITION DETECTOR 失效
公开(公告)号：JPS6082921A
公开(公告)日：1985-05-11
申请号：JP19079583
申请日：1983-10-14
申请人： HITACHI LTD
发明人： KITAURA WATARU , MIKAWA KOUJI
IPC分类号： G01D5/48 , G01B17/00
摘要： PURPOSE:To raise a detecting accuracy by changing a level of an ultrasonic signal generated by a fixed permanent magnet and a movable permanent magnet, and discriminating easily between an ultrasonic wave by the fixed permanent magnet and an ultrasonic wave by the movable permanent magnet. CONSTITUTION:The number of movable permanent magnets 7 provided on a movable object 6 is made one, and a level of an ultrasonic signal by the magnet 7 is made larger than a level of an ultrasonic signal by a magnet 4. As a result, when a pulse current is applied from a pulse generator 8, a magnetic strain ultrasonic wave is generated in a position where a fixed permanent magnet and the movalbe permanent magnet exist. Accordingly, only one ultrasonic signal whose level is large can be detected among plural ultrasonic signals whose levels are small.

36. 发明专利

JPS5918577A Control system of fuel cell power generating plant 失效
标题翻译：燃料电池发电厂控制系统
公开(公告)号：JPS5918577A
公开(公告)日：1984-01-30
申请号：JP12767682
申请日：1982-07-23
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The
发明人： TAKEUCHI YASUO , MIKAWA KOUJI
IPC分类号： H01M8/04 , H01M8/06
CPC分类号： H01M8/04776 , H01M8/04089 , H01M8/0438 , H01M8/0441 , H01M8/04731 , H01M8/04738 , H01M8/04992 , H01M8/0612
摘要： PURPOSE:To improve dynamic characteristics and decrease by-pass energy loss to increase heat efficiency by controlling an air supply apparatus which supplies air to a fuel cell by installing a heat balance controller. CONSTITUTION:A heat balance controller 8 is installed, and a detected pressure P and a setting pressure Po of discharge air are inputted to a signal converter 9. Its output and the output obtained by giving an added value of a detected value F and a reference value Fo of by-pass flow rate to a PI controller 11 are added and inputted to signal converters 13 and 14, and flow rate of auxiliary burner is controlled with output of the converter 13. Output of the converter 14 is inputted to a signal converter 16 with hydrogen gas temperature T and setting value T1. Fuel flow rate correction signal of a reformer is outputted through an adder 17 and an adder 19 which adds output LD3 of a PI controller 18 and a load follow- up controller. Dynamic characteristics of an air supply apparatus is improved and power generating efficiency is increased.
摘要翻译：目的：通过控制通过安装热平衡控制器向燃料电池供应空气的空气供应装置，来改善动态特性并减少旁路能量损失以提高热效率。构成：安装热平衡控制器8，将检测压力P和排出空气的设定压力Po输入到信号转换器9.其输出和通过给出检测值F和参考值的相加值得到的输出将附加到PI控制器11的旁路流量的值Fo相加并输入到信号转换器13和14，并且通过转换器13的输出来控制辅助燃烧器的流量。转换器14的输出被输入到信号转换器 16，氢气温度T和设定值T1。重整器的燃料流量校正信号通过加法器17和加法器19输出，加法器19将PI控制器18的输出LD3和负载跟踪控制器相加。提高空气供给装置的动态特性，提高发电效率。

37. 发明专利

JPS58166675A COMBUSTION CONTROL METHOD OF REFORMER 失效
公开(公告)号：JPS58166675A
公开(公告)日：1983-10-01
申请号：JP4951182
申请日：1982-03-27
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KAMITSUJI KIYOSHI , MIKAWA KOUJI
IPC分类号： H01M8/06
摘要： PURPOSE:To automatically perform the optimum control by finding supply and flow out energy to a reformer based on measured values of flow rate and temperature of gas, and separating the amounts of operation loss and of ordinary loss, to compensate the variation of operating conditions. CONSTITUTION:Fuel is supplied to an anode room 12 of a fuel cell 10 from a reaction part 22 of a reformer 20. Unreacting fuel 80, unreacting air 100 from a cathode room 11, air 110 from a compressor, and fuel gas-for-combustion 40 are supplied to a combustion room 21 of the reformer 20 to operate. A signal proportional to flow rate and temperature of flow in and flow out materials to and from the reformer 20 and to a load is inputted to a control apparatus 130. The heat in the reformer 20 is separated to the amount of operating loss proportional to operating conditions and the amount of ordinary loss which is not varied by operating conditions and calculated, and a control valve 43 is controlled so as to correct the amount of operating loss when operating conditions were varied. Therefore, control of fuel flow rate corresponding to the change of operating conditions is automated.

38. 发明专利

JPS5812268A GAS PRESSURE CONTROL METHOD OF FUEL CELL 失效
公开(公告)号：JPS5812268A
公开(公告)日：1983-01-24
申请号：JP10938081
申请日：1981-07-15
申请人： HITACHI LTD
发明人： MIKAWA KOUJI
IPC分类号： H01M8/04
摘要： PURPOSE:To prevent the output voltage drop of an air supply source caused by load variation when the pressure of the source changes by varying the air pressure of a fuel cell through the exhaust pressure of the air supply device or varying the fuel pressure through the air pressure of the cell. CONSTITUTION:A fuel obtained by converting naphtha or the like into hydrogen rich gas by means of a reforming device 2 and an air from an air compressor 3 are supplied to a fuel cell 1, while unreacted fuel is returned to the reforming device 2 and are burnt. A part of thus generated energy is applied to a turbine 4 and the compressor 3 is driven. In this case, the differential pressure of (P1-P2) is always retained by means of the control valve of an air flow control system 9 by varying the pressure set points of the air and fuel pressure control systems 7 and 8 of the cell 1 through the exhaust pressure P1 of the compressor 3, and cell air pressure P2 respectively. As a result, any output voltage drop can be prevented even when the pressure of the air supply source changes due to the load and the intra-cell gas crossover can also be prevented.

39. 发明专利

JPS57135001A APPARATUS FOR CONTROLLING CENTRIFUGAL THIN FILM DRYER 失效
公开(公告)号：JPS57135001A
公开(公告)日：1982-08-20
申请号：JP2006081
申请日：1981-02-16
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , KINOSHITA MITSUO
IPC分类号： B01D1/22 , G21F9/00 , G21F9/08
摘要： PURPOSE:To prevent the generation of scale, to widen the operational range of an apparatus and to enhance reliability by a method wherein plural stock material supply places are provided in a vertical direction as well as the supply amount of the stock liquid is controlled so as to set the drying place of the stock liquid to a predetermined position. CONSTITUTION:Stock material supply pipes 9, 9' have control valves 3, 3', flow amount detectors 4, 4' and flow meters 15, 15' and an evaporated substance is flowed out from a line 12 and powder from a line 13. Signals from a densitometer 14, flow meters 15, 15', and thermometers T1-T6 are sent to a controller 16 through signal lines 17-19 and the signal therefrom is sent to signal lines 20, 20' so as to set the drying place of a stock liquid to a predetermined place and the control valves 3, 3' are operated. As the result, influence of solid concn. in the stock liquid is made min. and the generation of scale can be prevented without reducing a stock material supply amount. By this method, the treatment of a stock liquid with high solid concn. is enabled and the operational range of the apparatus is wid ened as well as reliability is enhanced.

40. 发明专利

JPS57114844A ON-LINE MEASURING METHOD FOR PELLET STRENGTH AND ITS DEVICE 失效
公开(公告)号：JPS57114844A
公开(公告)日：1982-07-16
申请号：JP46281
申请日：1981-01-07
申请人： HITACHI LTD
发明人： MIKAWA KOUJI , SATOU TAKAO
IPC分类号： G01N29/00 , G01N29/11
摘要： PURPOSE:To measure strength of pellets by transmitting an ultrasonic wave onto the pellets in granulating and receiving the wave generating from the pellets. CONSTITUTION:By a briquet machine type granulator, the raw material powders 8 supplying from the (a) side in the arrow are precompressed by a screw feeder 2 and are sent pressurized to compression molding rollers 3, 4 and then the powders 8 are compressed between the pockets 5, 6 of a granulating position 7 at the molding rollers 3, 4 to mold pellets 9. The ultrasonic waves are transmitted from an oscillator 10 for transmission to the pellets 9 in the granulating process and the waves passing through the pellets 9 are recieved by an oscillator 11 for reception and are transmitted to an arithmetic device 19 after converting into electric signals. The signal amplitude of the ultrasonic waves passing through the pellets 9 corresponds to the strength of the pellets and therefore the strength of the granulating pellets is measured with on-line.

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