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1. 发明专利

JPH08334585A REACTOR EQUIPMENT AND ITS OPERATION METHOD 失效
公开(公告)号：JPH08334585A
公开(公告)日：1996-12-17
申请号：JP14041595
申请日：1995-06-07
申请人： HITACHI LTD
发明人： FUJIMOTO KIYOSHI , KATAOKA YOSHIYUKI , YOSHIOKA SENJI , KASHIWAI SHINICHI
IPC分类号： G21C9/04 , G21C13/00 , G21D3/04
摘要： PURPOSE: To provide a reactor equipment capable of preventing the breakage of a reactor containment and the internal equipment of the containment and maintaining the integrity of the reactor containment and its operational method. CONSTITUTION: The reactor equipment is provided with a reactor containment 33, a reactor pressure vessel 2 arranged in the reactor containment and containing a core 1, a drywell 3 and a wetwell 6 containing the reactor pressure vessel 2, an operation floor 8 formed at the upper part of the reactor containment 2 and a rupture disk 9 placed in between the operation floor 8 and the wetwell 6. Also, it is provided with, on the operation floor 8, a gas reaction suppression device 12 for injecting material suppressing the reaction of hydrogen and oxygen upon receiving an accident occurrence signal.

2. 发明专利

JPS593402A Optical connector of single cored optical fiber cable 失效
标题翻译：单根光纤光缆的光学连接器
公开(公告)号：JPS593402A
公开(公告)日：1984-01-10
申请号：JP11161582
申请日：1982-06-30
申请人： Hitachi Ltd
发明人： YOSHIOKA SENJI , SADAKANE KENICHIROU
IPC分类号： G02B6/00 , G02B6/36 , H04B10/25 , H04B10/2581
CPC分类号： G02B6/3604
摘要： PURPOSE:To obtain an optical connector wherein the core shafts of two single- cored optical fiber cables can rotate independently and freely by incorporating two short-sized optical fiber single cores and a bearing. CONSTITUTION:The end faces of the optical fiber cores 3, 4 of the single-cored optical fiber cables to be connected are brought into contact with the end faces of the short-sized optical fiber single cores 13, 14 contained in an adapter part 300 and are coupled thereto; further, the cores 13, 14 are optically connected with a gap 21. A bearing construction consisting of a cylindrical outer race 17, an inner race 18, a rolling body 19, and a stop ring 20 for the rolling body is adapted in the part 300, so that the plug parts 100, 200 of the respective optical connectors are rotated around the revolving axis of the bearing with less rotating friction.
摘要翻译：目的：为了获得光纤连接器，其中两根单芯光纤电缆的芯轴可以通过并入两根短尺寸光纤单芯和一个轴承而独立自由地旋转。构成：要连接的单芯光纤电缆的光纤芯3,4的端面与容纳在适配器部件300中的短尺寸光纤单芯13,14的端面接触并耦合到其上; 此外，芯13,14与间隙21光学连接。由圆筒形外圈17，内圈18，滚动体19和用于滚动体的止动环20组成的轴承结构适用于该部分 300，使得各个光学连接器的插头部分100,200以较少的旋转摩擦力绕着轴承的旋转轴线旋转。

3. 发明专利

JPH04291129A DEVICE FOR DETECTING CAVITATION OF ELECTROMAGNETIC PUMP 失效
公开(公告)号：JPH04291129A
公开(公告)日：1992-10-15
申请号：JP5632991
申请日：1991-03-20
申请人： HITACHI LTD
发明人： OZAWA KAZUMASA , YOSHIOKA SENJI , YOKOTA NORIKATSU , SATO YOSHIHIKO
IPC分类号： G01M99/00 , G21C17/003 , H02K44/06
摘要： PURPOSE:To quickly and accurately detect the cavitation of an electromagnetic pump used for fast bleeder reactors, etc. CONSTITUTION:By providing an electrode 10 so that the electrode 10 can be brought into contact with a working fluid 5 through the duct 8 of an electromagnetic pump and connecting a high-frequency signal source 11 to the electrode 10 so that most of a high-frequency current can be made to flow near the interface between the fluid 5 and duct 8, the generation and collapse of a cavitation are detected from changes in electrical admittance. Since the electromagnetic pump can be operated within the extent within which no cavitation is generated by accurately and quickly detecting a generated and collapsing cavitation, the damage to the duct by cavitations can be prevented and the service life of the material used for the duct can be prolonged.

4. 发明专利

JPH01311857A INDUCTION TYPE ELECTROMAGNETIC PUMP 失效
公开(公告)号：JPH01311857A
公开(公告)日：1989-12-15
申请号：JP13930888
申请日：1988-06-08
申请人： HITACHI LTD
发明人： YOSHIOKA SENJI , SHIMOYASHIKI SHIGEHIRO , ISHIDA TOMIO
IPC分类号： H02K44/06 , H02K44/04
摘要： PURPOSE:To improve pump efficiency by using a flat pump duct to an electromagnetic pump, around which an inlet of conductive fluid is provided and in the center of the flat surface of which an outlet is provided, etc. CONSTITUTION:A pump duct 1 of an electromagnetic pump is shaped flat, provided respectively are an inlet piping 4 surrounding its flat surface into which conductive fluid flows and an outlet piping 5 in the center of its flat surface from which the conductive fluid flows. Stator yokes 2 are arranged around the outlet piping 5 facing the flat surface of the pump duct 1. Stator coils 3 are wound around the yokes 2 and excited by an excitation circuit with an AC current source 9, etc. Exciting current thereby flows to the stator coils 3 and alternating field is generated across stator yokes 2. With this alternating field the induction eddy current I flows to the conductive fluid and in compliance with Lenz's law electromagnetic force will work. With this electromagnetic force the fluid points to the outlet piping 5 in compliance with Fleming's left hand rule and is forcibly pushed out.

5. 发明专利

JPS6046065A RADIATION RESISTANT SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE 失效
公开(公告)号：JPS6046065A
公开(公告)日：1985-03-12
申请号：JP15320283
申请日：1983-08-24
申请人： HITACHI LTD
发明人： YOSHIOKA SENJI , TOMIZAWA FUMIO , IWATSUKA NOBUYOSHI
IPC分类号： H01L21/8222 , H01L23/552 , H01L27/06
摘要： PURPOSE:To improve the radiation resistance performance by compensating a decrease in the current amplification due to radiation absorption to the prescribed degree by the regulation of the junction temperature of a semiconductor device. CONSTITUTION:A decrease in a current amplification foctor occurred by the fact that radiation dosage is absorbed to a semiconductor integrated circuit is detected by a detector, and expressed as vC/vB of the voltage drops of external resistors 23, 24, i.e., a signal voltage 30. If the voltage 30 decreases to a threshold voltage 31 or lower, a gate 29 is opened by an output signal of a comparator 28, and a supply current of a power source 36 is supplied to a Peltier element 10. The element 10 supplies thermal energy to a bipolar transistor for the integrated circuit, and the current amplification factor decreased due to the increase in the junction temperature Tj is increased and recovered. When it is recovered to the original value of the current amplification factor, thermal energy supply due to the element 10 is stopped, and the rise of the temperature Tj is stopped. The junction temperature Tj of the transistor can be controlled from this repeated regulation, thereby compensating the decrease in the current amplification factor due to the radiation absorption.

6. 发明专利

JPS5985150A OPTICAL COMMUNICATION DEVICE FOR MOBILE CONTROL 失效
公开(公告)号：JPS5985150A
公开(公告)日：1984-05-17
申请号：JP19451582
申请日：1982-11-08
申请人： HITACHI LTD
发明人： TOMIZAWA FUMIO , SATOU CHIKARA , OZAKI NORIHIKO , SADAKANE KENICHIROU , SUZUKI MASANORI , ICHIKAWA YOSHIAKI , YOSHIOKA SENJI , IWATSUKA NOBUYOSHI
IPC分类号： H04B10/11 , G05D1/00 , G05D1/02 , H04B10/07 , H04B10/112
摘要： PURPOSE:To obtain a controlling communicating device which does not limit the function of a mobile body by restricting a photo transmitter and detector so that bidirectional optical communication is attained at all times between plural satellite stations connected to a console by a cable communication means and mobile bodies. CONSTITUTION:A mobile car 2 used for the inspection in an atomic reactor container is connected with an optical radio system using an optical transmission line 10 among plural satellite stations 5 allocated in a running space and a wired transmission line 6 is connected between the satellite stations 5 and a central station 3 in the console 1. Universal heads 9l, 9s are controlled so that the photo transmitter/detector 7l, 7s for optical radio system are opposed to each other at all times in following to the running of the mobile body 2. The position of the mobile body 2 is calculated from the up/down, left/right turning angle of the transmitter/detector 7l, 7s, and the central station 3 selects sequentially the satellite stations 5 in communication with the mobile station 4 in response to the position of the mobile body 2.

7. 发明专利

JPS58150829A ABNORMALITY DIAGNOSIS APPARATUS FOR SOUND 失效
公开(公告)号：JPS58150829A
公开(公告)日：1983-09-07
申请号：JP1481782
申请日：1982-02-03
申请人： NIPPON GENSHIRYOKU HATSUDEN , TOKYO ELECTRIC POWER CO , CHUBU ELECTRIC POWER , CHUGOKU ELECTRIC POWER , HITACHI LTD
发明人： SHIMIZU KATSUTOSHI , WATARAI TEISUKE , ITOU TAKAHIKO , HASHIMOTO YUUJI , YOSHIOKA SENJI , TOMIZAWA FUMIO
IPC分类号： G01M99/00 , G01H3/00 , G01H17/00
摘要： PURPOSE:To enable remote diagnosis of abnormality of equipment with a simple structure by collecting a normal sound of a sound source for diagnosis in a rotary machine or the like to be memorized into a data recorder as necessary comparison signal for the diagnosis. CONSTITUTION:When an operator 100 operates a console 13 before the start of a diagnosis, a normal acoustic signal from a sound source 50 as collected with a microphone 1 is recorded into a data recorder 3 as diagnostic comparison signal based on a control signal 8 of a controller 12. Then, when the sound source 50 is diagnosed, an acoustic signal form the sound source 50 is applied to a speaker 5 through a gate 6 and at the same time, a reproduced signal from the record 3 is applied to a speaker 4. Therefore, the operator can catch the two acoustic signals as audio information simultaneosuly thereby enabling the extraction of abnormal sounds of the sound source at a remote point.

8. 发明专利

JPH11141449A GUIDE VANE OF PUMP HYDRAULIC TURBINE AND ITS MANUFACTURE 失效
公开(公告)号：JPH11141449A
公开(公告)日：1999-05-25
申请号：JP30525497
申请日：1997-11-07
申请人： HITACHI LTD
发明人： TANAKA YUJI , MIURA SEIJI , YOSHIOKA SENJI , HARAGUCHI YUKIKADO , NARISAWA SATOSHI
IPC分类号： F03B3/18
摘要： PROBLEM TO BE SOLVED: To prevent the interference between a stay vane and a guide vane in an operating point having a large flow rate by rotating and moving the blade of the guide vane of a pump hydraulic turbine. SOLUTION: An axial center of a shaft 2 is provided so as to be on the outside of the form of a blade 1, and when a guide vane is rotated according to operating state, the blade 1 is not only rotated but also moved. Thus, the space L between the stay vane-side blade end of the blade 1 and the guide vane-side blade end of a stay vane 4 is minimized. For the flowing state at this time, the flowing-out direction of the water flow from the blade 1 is moved since the blade 1 is moved in the guide vane arrangement direction, and the slip stream of the guide vane never reaches the negative pressure surface 4S of the stay vane 4. Thus, since the slip stream of the guide vane is never interfered with the boundary layer of the negative pressure surface 4S, the pump efficiency can be improved without increasing the loss, and a high pump efficiency can be kept even in a large flow rate.

9. 发明专利

JPH03176652A HEAT CONDUCTIVITY DISTRIBUTION MEASURING INSTRUMENT 失效
公开(公告)号：JPH03176652A
公开(公告)日：1991-07-31
申请号：JP31527589
申请日：1989-12-06
申请人： HITACHI LTD
发明人： YOSHIOKA SENJI , IKEDA TAKASHI , HAYASHIBARA MITSUO , INOUE HISAMICHI
IPC分类号： G01N25/18
摘要： PURPOSE:To easily measure a distribution of heat conductivity by supplying the heat from a heat source to a solid sample and measuring the temperature difference of a sample by a thermoelectric element, taking a numerical analysis while the heat source is regarded as a border condition, and matching the analytic result with the measurement result. CONSTITUTION:A heat absorption source -q consisting of a Peltier element is arranged at a connection position P1 of the solid sample 1 and a heat generation source +q is arranged at connection points, e.g. P2-P4 in order; and temperature differences at positions P2-P4 based upon the position P1 are measured every heat sources. Measurement data are gathered by a gathering device 12. The heating value q of the heat source 2 is read in the device 12 as the converted value of the current of a current source 9 and the temperature difference by thermocouples 4a and 4b (e.g. connection positions P1 and P4) is read in as the converted value of the potential difference V of an electrometer 11. The data gathered by the device 12 are sent to a CT image reconstitution device 14. Assuming the distribution of heat conductivity (k) in the sample 1, the temperature distribution is calculated numerically according to the heat source q as the border condition and when the calculated value is not equal to the measured value, the distribution of the assumed rate (k) is corrected and the calculation is repeated, so that when the calculated value becomes equal, the distribution of the rate (k) is outputted.

10. 发明专利

JPH01243842A ELECTRODE STRUCTURE OF ELECTROMAGNETIC PUMP 失效
公开(公告)号：JPH01243842A
公开(公告)日：1989-09-28
申请号：JP6743488
申请日：1988-03-23
申请人： HITACHI LTD
发明人： SHIMOYASHIKI SHIGEHIRO , ISHIDA TOMIO , YOSHIOKA SENJI
IPC分类号： H02K44/02
摘要： PURPOSE:To prevent an electromagnetic pump from generating thermal stress to its duct wall, by providing an electrode fitting nozzle integrally machined to the duct at the spot where the electrode of the electromagnetic pump duct is jointed, and by jointing the electrode to the tip of the nozzle. CONSTITUTION:An electrode fitting nozzle 5 is cut out to a duct 1 by machining in integral structure with stainless steel material, to the tip of the nozzle of which an electrode 2 is welded. Usually, the thickness of the duct 1 is about several mm, so that the length of the nozzle 5 will do in twice or three times as thick as its thickness. The thermal stress caused by the welding of the electrode is thereby generated between the electrode and the electrode fitting nozzle 5 and no influence is effected directly to the duct wall.

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