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71. 发明专利

JPS61292095A WATER GAGE FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS61292095A
公开(公告)日：1986-12-22
申请号：JP13290985
申请日：1985-06-20
申请人： TOSHIBA CORP
发明人： YOKOBORI SEIICHI , NARABAYASHI SUNAO
IPC分类号： G21C17/035 , G01F23/00 , G21C17/02

72. 发明专利

JPS6165198A Decontaminating robot for piping 失效
标题翻译：去除机器人管道
公开(公告)号：JPS6165198A
公开(公告)日：1986-04-03
申请号：JP18537384
申请日：1984-09-06
申请人： Toshiba Corp
发明人： NARABAYASHI SUNAO
IPC分类号： G21F9/28 , G21F9/00 , G21F9/30

73. 发明专利

JPS5931438A Measuring device for void content by radiation 失效
标题翻译：通过辐射测量无线内容的设备
公开(公告)号：JPS5931438A
公开(公告)日：1984-02-20
申请号：JP14193882
申请日：1982-08-16
申请人： Toshiba Corp
发明人： KATOU MASARU , NARABAYASHI SUNAO , YASUDA SATOSHI
IPC分类号： G01N23/02 , G01F1/74 , G01N23/12 , G01N35/00
CPC分类号： G01N23/12
摘要： PURPOSE:To enable the reduction in the length of a measuring pipe, by providing an arithmetic circuit which calculates the void content of the two-phase flow in a measuring pipe in accordance with the detection signal of a detector which detects the radiation beam transmitting the two-phase flow in said tube. CONSTITUTION:A radiation source 3, a radiation detector 4 which irradiates a radiation beam 5, a collimator 6 provided to the source 3 and a slit 7 provided to the detector 4 are provided in addition to a flow pipe 101 for two-phase flow in which the two-phase flow 1 to be measured flows. The detection signal of the detector 4 is transmitted through a signal cable 8 to an arithmetic circuit 9, by which void content alpha is calculated. More specifically, the beam 5 of X- rays or gamma-rays irradiated from the source 3 is throttled to a fine parallel beam by the collimator 6 and transmits the two-phase flow including the foam 10 mixed therein then the beam is made incident to the detector 4 past the slit 7 and the void volume alpha is calculated in accordance with the detection signal in the circuit 9.
摘要翻译：目的：为了减少测量管的长度，通过提供一种算术电路，该算术电路根据检测辐射束的检测器的检测信号计算测量管中的两相流的空隙含量所述管中的两相流动。构成：除了用于两相流动的流管101之外，还设置有辐射源3，照射辐射束5的放射线检测器4，设置到源3的准直器6和设置到检测器4的狭缝7。待测量的两相流1流动。检测器4的检测信号通过信号电缆8传输到算术电路9，由此计算空隙内容α。更具体地，从源3照射的X射线束或伽马射线5被准直器6节流到细平行光束，并且透过包含混合在其中的泡沫体10的两相流，然后将光束入射到根据电路9中的检测信号计算经过狭缝7的检测器4和空隙体积α。

74. 发明专利

JP2002106800A FLUID LEAK DETECTION SYSTEM 失效
公开(公告)号：JP2002106800A
公开(公告)日：2002-04-10
申请号：JP2000296609
申请日：2000-09-28
申请人： TOSHIBA CORP
发明人： YAMAMOTO YASUSHI , SHIRAKAWA TAKEETSU , MOROOKA SHINICHI , KUBO SHINJI , MIURA SHIGERU , AKIBA YOSHIYUKI , NARABAYASHI SUNAO
IPC分类号： G21C17/003 , F17D5/02 , F17D5/06 , G21C17/02
摘要： PROBLEM TO BE SOLVED: To provide a fluid leak detection system capable of safely detecting a small amount of fluid leak caused by a small breakage of a pipe body in an early stage and of specifying a breakage position in a stage where a leak fluid stays inside a heat insulating material cover. SOLUTION: On a surface 13 of the heat insulating material cover enclosing a pipe body in which a high-temperature fluid flows, a leak sensor 16 which changes a state or issues a given signal depending on a temperature of the high temperature fluid leaking outside the pipe body, is provided.

75. 发明专利

JP2000162382A BOILING WATER REACTOR 失效
公开(公告)号：JP2000162382A
公开(公告)日：2000-06-16
申请号：JP33285398
申请日：1998-11-24
申请人： TOSHIBA CORP
发明人： WAKAMATSU MITSUO , NARABAYASHI SUNAO , MATSUI HIDEO
IPC分类号： G21D1/00 , B21C1/00 , G21C1/00 , G21D1/02
摘要： PROBLEM TO BE SOLVED: To efficiently absorb non-condensible gas and reduce the concentration of dissolved oxygen by lowering the level of the non-condensible gas such as dissolved oxygen with a water supply system of a boiling water reactor. SOLUTION: In a boiling water reactor in which steam generated in a reactor pressure vessel is sent through a main steam line to a steam turbine and the steam supplied for work is condensed in a condenser into water which is sent with a condensate pump through a heater and a deaerator to a feed water system and returned as reactor feed water through the feed water system into the reactor pressure vessel, a low pressure drain tank 213 for introducing part of steam/water heated with a heater through a steam/water inlet piping 1, extracting non-condensible gas such as oxygen contained in the steam/water and sucking in an offgas extractor 216 is provided and the steam/water inlet piping 1 is penetrated through a tank wall into the low pressure drain tank 213. Around the piping 1 positioned in the tank, a plurality of flow holes 4 for discharging steam/water as droplets are provided with proper intervals.

76. 发明专利

JPH11231090A COOLANT FLOW MEASURING DEVICE FOR NUCLEAR FURNACE 失效
公开(公告)号：JPH11231090A
公开(公告)日：1999-08-27
申请号：JP25809498
申请日：1998-09-11
申请人： TOSHIBA CORP
发明人： KOMITA HIDEO , KUBO SHINJI , MOROOKA SHINICHI , SHIRAKAWA TAKEETSU , NARABAYASHI SUNAO
IPC分类号： G01F1/00 , G01F1/42 , G01F1/44 , G21C17/032
摘要： PROBLEM TO BE SOLVED: To provide a coolant flow measuring device which is improved in measuring precision, without need for correction in a difference between containers, and is not affected by the property change of individual circulation pumps or equipment and instruments. SOLUTION: A motor section M and a pump section P are located at the outside and inside of a nuclear furnace pressure vessel 1 and the motor section M and the pump section P are connected to each other via a shaft S to mount a circulation pump 4 on the nuclear furnace pressure vessel 1. A bell-mouth 17 or a flow measurement pipe passage is provided on a pump deck 13 on the suction side of the circulation pump 4 and a first pressure measurement pipe 18 is provided in the bell mouth 17 and connected through a second pressure measurement pipe 19 to a shroud 2. The first pressure measurement pipe 18 and the second pressure measurement pipe 19 are connected to a differential pressure measuring device. A ultrasonic flow meter is provided as another means outside the nuclear furnace pressure vessel 1 and a flow calculating device is provided to input an output signal from the ultrasonic flow meter.

77. 发明专利

JPH10221480A STEAM SEPARATOR, ATOMIC POWER PLANT AND BOILER DEVICE 失效
公开(公告)号：JPH10221480A
公开(公告)日：1998-08-21
申请号：JP28823897
申请日：1997-10-21
申请人： TOSHIBA CORP
发明人： NARABAYASHI SUNAO , AKIBA YOSHIYUKI , MOROOKA SHINICHI , NAKAMARU MIKIHIDE , YASUOKA MAKOTO
IPC分类号： G21C7/26 , B01D45/00 , B01D45/16 , F22B7/08 , F22B37/26 , F22B37/32 , G21C3/00 , G21C3/34 , G21C15/16 , G21C15/24 , G21D3/00 , G21D5/12
摘要： PROBLEM TO BE SOLVED: To simultaneously attain steam water separation and core forced circulation by introducing a separator injector with high outlet pressure than inlet pressure instead of active components in reactor recirculation system formally necessary. SOLUTION: In the lower part of downcomer 6 in a reactor pressure vessel 5, a jet pump 14 and a recirculation flow control valve 7 are provided. By making the shroud head in dual structure 10a and 10b and accelerating steam water two-phase flow flowing in from the lower part of lower step 10b with an acceleration nozzle of a separator injector 1, and separating fluid into steam and water, the liquid phase is pressurized with a diffuser and introduced via the gap formed with dual shroud heads 10a and 10b to a jet pump 14. Or instead of this separator injector 1, a round pipe shape separator injector formed by spirally placing a steam nozzle and a diffuser in the vicinity of inner wall of the pipe can be arranged.

78. 发明专利

JPH1085634A JET STREAM WORKING DEVICE, JET STREAM WORKING SYSTEM AND JET STREAM WORKING METHOD 失效
公开(公告)号：JPH1085634A
公开(公告)日：1998-04-07
申请号：JP26351996
申请日：1996-09-12
申请人： TOSHIBA CORP
发明人： NARABAYASHI SUNAO
IPC分类号： B01F3/04 , B01F5/00 , B01F5/04 , B05B7/04 , B05B7/06 , B08B3/02 , B08B9/04 , B08B9/08 , B08B9/093 , B22D31/00 , B24C1/10
摘要： PROBLEM TO BE SOLVED: To provide a jet stream working device, a jet stream working system and a jet stream working method in which the removal of material stuck on a surface to be worked, the deburring involved in metal working, and the improvement of stress on a metal surface are effectively performed with simple constitution. SOLUTION: A jet stream working device 17 is provided with a water nozzle 1 for jetting a water jet stream consisting of liquid phase water, a steam nozzle 3 for making a gas phase steam stream 4 supersonic to form a steam jet stream 11 and jet this steam jet stream so that it may be mixed with the water jet stream excessively beyond heat balance, and a mixing nozzle 2 for mixing the water jet stream and the steam jet stream to jet a two-phase jet stream 12 consisting of the water jet stream and the steam jet stream directly toward an object to be worked 5.

79. 发明专利

JPH09257989A FEED WATER HEATER IN BOILING NUCLEAR REACTOR 失效
公开(公告)号：JPH09257989A
公开(公告)日：1997-10-03
申请号：JP6797196
申请日：1996-03-25
申请人： TOSHIBA CORP
发明人： YANO TAKASHI , NARABAYASHI SUNAO , ARAI KENJI , MIYANO HIROSHI
IPC分类号： G21D1/02 , F22D1/32
摘要： PROBLEM TO BE SOLVED: To effectively discharge non-condensation gas remaining in a water chamber and a condensation part in a feed water heater in a boling nuclear reactor to thereby preventing drain water from being blocked, resulting in the stability of water level in the heater. SOLUTION: This heater is provided with a round body 2, tubular plate 3 and a plurality of heating pipes 4 arranged in the body 2. The vapor containing inactive gas such as hydrogen, oxygen generated in a nuclear reactor pressure vessel is led into the body 2 as extraction vapor from a turbine or other parts. In the body, a de-super heating zone, condensing zone, and drain cooling zone 14 are arranged. The zone 14 is provided with a plurality of disturbing plates 17 making the flow toward a drain outlet 13 in a zigzag manner. A vapor condensation part is provided with a gas vent pipe for discharging the inactive gas to the outside of the body 2. The plates 17 are oppositely arranged right and left symmetrically in a staggered form to make condensation water meander in a horizontal plane.

80. 发明专利

JPH08211183A REACTOR RECIRCULATION DRIVING SYSTEM OF BOILING WATER REACTOR 失效
公开(公告)号：JPH08211183A
公开(公告)日：1996-08-20
申请号：JP1620295
申请日：1995-02-02
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： MORI HARUJI , KUDO YOSHIRO , NARABAYASHI SUNAO
IPC分类号： G21C15/25
摘要： PURPOSE: To suppress the occurrence of trouble peculiar to large rotary machines and simplify maintenance works by installing a flow control valve for controlling discharge flow in the discharge side pipe of steam injector provided as driving device for reactor recirculation driving system. CONSTITUTION: A steam injector 29 is provided with an extraction steam piping 30, a driven water piping 31, discharge piping 32 and a drain piping, and the discharge piping 32 is provided with a flow control valve 36. In the case where a plurality of steam injectors 29 are provided, total discharge flow is controlled by operating the openings of the flow control valves 36 individually or in group with a split range method. In this manner, only one or a group of steam injectors 29 remains in the middle of full open and full close of the flow control valve 36, total drain flow from steam injectors 29 is minimized and the rest of the steam injectors 29 can be maintained in optimum range of operation state without drain flow.

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