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1. 发明专利

JPH09304569A FUEL SPACER, LOWER TIE-PLATE, AND FUEL ASSEMBLY 失效
公开(公告)号：JPH09304569A
公开(公告)日：1997-11-28
申请号：JP12546296
申请日：1996-05-21
申请人： TOSHIBA CORP
发明人： YAMAMOTO YASUSHI , YANO TAKASHI , MITSUTAKE TORU
IPC分类号： G21C3/33 , G21C3/322 , G21C3/344
摘要： PROBLEM TO BE SOLVED: To reduce the flow resistance of a coolant flowing through a fuel assembly and improve the critical power of fuel by properly constituting and arranging fuel spaces and a lower tie-plate. SOLUTION: The fuel spacers 27 are arranged so that a plurality of cells independently forming fuel insertion part for inserting fuel rods 2 and a water rod with almost even pitches are arranged in a grid. The rod insertion part 30 is formed between a plurality of cells 28 of which centers are adjusted to the center of flow paths of 4 fuel rods 2 and support bands 29 arranged around the plurality of cells. At the downstream end of the cells 28, vanes 39 guiding the coolant are provided and the downstream end of the band 29, flow tabs 42 are provided in one.

2. 发明专利

JPH09243779A NUCLEAR REACTOR 失效
公开(公告)号：JPH09243779A
公开(公告)日：1997-09-19
申请号：JP5213196
申请日：1996-03-08
申请人： JAPAN ATOMIC POWER , TOSHIBA CORP
发明人： YOSHIOKA YUZURU , KADOTANI MITSUTO , TABATA HIROAKI , SUGANO MINORU , YOSHIHISA YASUMASA , NARABAYASHI SUNAO , ARAI KENJI , YANO TAKASHI , SHIOIRI AKIO , OIKAWA HIROHIDE , MIZUMACHI WATARU , YASUOKA MAKOTO
IPC分类号： G21C15/18
摘要： PROBLEM TO BE SOLVED: To properly cope with a minor rupture accident and improve the safety and economic property of a nuclear reactor by injecting water into a reactor vessel by a steam injector. SOLUTION: When a minor rupture accident occurs, an automatic pressure reducing system 5 or an isolation condenser is operated to reduce the internal pressure of a reactor pressure vessel 2. When the internal pressure of the vessel 2 is lowered to a prescribed value, a low pressure core water injecting system 16 is operated. After several minutes from operation start, combining water from a steam injector 17 is injected into the vessel 2. The internal pressure of the vessel 2 is lowered by water injection of the water injecting system 16, and when the downstream side pressure of a check valve 14 becomes lower than the head pressure of a pool 11, the valve 14 is opened to inject water in the pool 1 into the vessel 2 through a piping 12. Just after the occurrence of the minor rupture accident, the level in the vessel is recovered and kept by water injection of the water injecting systems 16, 10 to ensure the cooling of a core 3. The steam in the vessel 2 is released into the dry well DW of a reactor container 1 to ensure a long-term cooling.

3. 发明专利

JPH08166480A FUEL ASSEMBLY 失效
公开(公告)号：JPH08166480A
公开(公告)日：1996-06-25
申请号：JP31042694
申请日：1994-12-14
申请人： TOSHIBA CORP
发明人： YANO TAKASHI , YAMAMOTO YASUSHI , TSUKUMO YOSHIAKI , MOROOKA SHINICHI
IPC分类号： G21C3/322 , G21C3/33
摘要： PURPOSE: To facilitate the loading of a channel box and prevent aging change of the leakage of coolant. CONSTITUTION: A rectangle dent 13 is provided at the lower part of a channel box 2 and the lower part of the channel box 2 is loaded on a lower tie-plate 7 so that the dent 13 pushes the side of the lower tie-plate 7. Spring force is given to the dent 13. Due to the pressure difference between the lower part of the lower tie-plate 7 and the channel box 2, the dent 13 is pushed and follows to contact even with the swelling of the channel box 2. By this, the leakage rate of the cooling water flowing from below outside of the channel box 2 is kept low and the cooling water can be efficiently supplied for cooling of fuel rods, which lead to preventing failure accidents in loading the channel box 2.

4. 发明专利

JPH0774719A INTERMEDIATE REPEATER 失效
公开(公告)号：JPH0774719A
公开(公告)日：1995-03-17
申请号：JP15838593
申请日：1993-06-29
申请人： TOSHIBA CORP
发明人： YANO TAKASHI , OTANI MITSURU
IPC分类号： H04J3/00 , H04J3/08
摘要： PURPOSE:To process an overhead with simple configuration, thereby reducing a circuit scale and power consumption. CONSTITUTION:A latch circuit 3 extracts overhead data from main signal data not unscrambled. The overhead data are exclusively ORed with a descramble pattern corresponding to the overhead outputted from a ROM 5 at a logic circuit 4 and then descrambled. On the other hand, the overhead data outputted from a processing unit are exclusively ORed with a descramble pattern corresponding to the overhead outputted from a ROM 10 at a logic circuit 9 and then scrambled. The scrambled overhead data are inserted into main signal data by a selector 12.

5. 发明专利

JPH09237113A CIRCUIT FOR DETECTING PARALLEL SIGNAL INPUT DISCONNECTION 失效
公开(公告)号：JPH09237113A
公开(公告)日：1997-09-09
申请号：JP4611696
申请日：1996-03-04
申请人： TOSHIBA CORP
发明人： YANO TAKASHI
IPC分类号： G05B9/03 , G05B23/02 , H03M9/00 , H04B17/00
摘要： PROBLEM TO BE SOLVED: To prevent erroneous detection even if a signal where a specified cycle pattern is parallel expanded is inputted. SOLUTION: Parallel signal lines are monitored by change point detecting circuits 210-213, input disconnection is detected so as to adopt the output to be active unless an input signal changes to be high or low for a fixed period and a state is adopted as the sleep one after a fixed time elapses when a change point appears in an active state. It is judged whether signal input disconnection or not from the pieces of change point detecting information by a pattern identifying circuit 22. The logical level of the respective signal lines is discriminated at the time of detecting input disconnection concerning the whole signal lines. Signal input disconnection is judged and the output is made to be active at the time of only a specified pattern of data. Thus, the outputs of the change point detecting circuits 210-213 of the respective lines and logical level information of the respective signal lines are coupled so that a transmission pattern at the time of serial transmission is presumed and disconnection is judged.

6. 发明专利

JPH08122474A FUEL SPACER AND FUEL ASSEMBLY 失效
公开(公告)号：JPH08122474A
公开(公告)日：1996-05-17
申请号：JP26567694
申请日：1994-10-28
申请人： TOSHIBA CORP
发明人： MOROOKA SHINICHI , TSUKUMO YOSHIAKI , YAMAMOTO YASUSHI , SHIRAKAWA TAKEETSU , YANO TAKASHI
IPC分类号： G21C3/322 , G21C3/326 , G21C3/344
摘要： PURPOSE: To provide a fuel spacer and a fuel assembly that can efficiently apply liquid drops to fuel rods, many of which exist beside the inner face of a channel box, has a simple structure and can contribute greatly to the improvement of the limit output. CONSTITUTION: This fuel spacer has a supporting band 11 formed like a square frame to support a bundle of fuel rods 3 from the direction of the outer circumference and a fuel holding part 16 placed in connection with the inside of the supporting band 11 to hold each of the fuel rods 3 arranged in a lattice at some intervals. In a channel box whose section is square, coolant passages are longitudinally formed between the channel box and the fuel rods and between fuel rods. An inclining flow tub 12 for turning the coolant flow toward the fuel rods 3 is placed at the edge at least on the downstream side of the coolant flow in a supporting band 11. A section has a shape equipped with an edge 17 for controlling the inflow from the direction intersecting that of the coolant flow to a face 12a on the downstream side of the coolant flow in the flow tub 12.

7. 发明专利

JPH0666974A FUEL ASSEMBLY 失效
公开(公告)号：JPH0666974A
公开(公告)日：1994-03-11
申请号：JP22312492
申请日：1992-08-24
申请人： TOSHIBA CORP
发明人： YANO TAKASHI
IPC分类号： G21C3/30
摘要： PURPOSE:To improve the limit power of peripheral fuel rods and increase the thermal margin of the whole fuel assembly by increasing the coolant flow in the flow path surrounded by the peripheral fuel rods and a channel box. CONSTITUTION:In the lower tie-plate 28, a coolant guide inlet 30 is provided to introduce coolant between each fuel rod 23 and a water rod 24. The shape of the lower tie-plate 28 is so made that the center of fuel holding part 28a projects more than the peripheral part. The fuel rods 23 supported by the fuel support part 28a and arranged in the center is made longer than those arranged in the periphery. And the lower end of the fuel rods arranged in the center is supported by the fuel support part 28a of the lower tie-plate 28 at lower position than the lower end of the peripheral fuel rods.

8. 发明专利

JP2003298528A Control circuit for optical amplifier and optical transmission device 审中-公开
标题翻译：光放大器和光传输装置的控制电路
公开(公告)号：JP2003298528A
公开(公告)日：2003-10-17
申请号：JP2002101558
申请日：2002-04-03
申请人： Toshiba Corp , 株式会社東芝
发明人： YANO TAKASHI , SUGAWARA MITSURU
IPC分类号： H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H04B10/2507 , H04B10/29 , H04B10/291 , H04B10/293 , H04B10/564 , H04B10/572 , H04Q3/52 , H04B10/16 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/17
摘要： PROBLEM TO BE SOLVED: To provide a control circuit for an optical amplifier and an optical transmission device for preventing occurrence of a light surge independently of a fluctuation in an input optical level. SOLUTION: This invention aims at an optical amplifier 4 the input optical level of which is dynamically changed by placing an optical switch 2 at a pre- stage of a transmission path of an optical signal. Further, the optical amplifier 4 is provided with a control loop to make an output optical level constant using an output constant control section 7. Through the configuration above, a stimulated LD shut-down signal is given to the output constant control section 7 only for a period of τ1+τ2 including a point of time when a switching state of the optical switch 2 is changed synchronously with a switching control signal to control the switching state of the optical switch 2 so as to stop driving of the stimulated LD of the optical amplifier 4. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于光放大器的控制电路和用于防止光浪涌发生而与输入光学水平波动无关的光传输装置。解决方案：本发明旨在通过将光开关2放置在光信号的传输路径的前级来动态地改变其输入光级的光放大器4。此外，光放大器4设置有使用输出常数控制部分7使输出光电平恒定的控制回路。通过上述配置，激励的LD关闭信号仅被给予输出常数控制部分7，用于包括光开关2的开关状态与切换控制信号同步变化的时间点的τ1+τ2的周期，以控制光开关2的切换状态，以停止光学的激发的LD的驱动放大器4.版权所有（C）2004，JPO

9. 发明专利

JP2002344072A DETERIORATION STATE DETECTING CIRCUIT OF LIGHT SOURCE, AND OPTICAL FIBER AMPLIFIER 失效
公开(公告)号：JP2002344072A
公开(公告)日：2002-11-29
申请号：JP2001149565
申请日：2001-05-18
申请人： TOSHIBA CORP
发明人： MATSUMOTO KENICHIRO , YANO TAKASHI , SUGAWARA MITSURU
IPC分类号： H01S3/06 , H01S3/094 , H01S3/10 , H01S5/042
摘要： PROBLEM TO BE SOLVED: To enable deteriorated state of an excitation light source to be monitored in a state, in which the amplification gain of an optical fiber amplifier is lowered. SOLUTION: A deterioration state detecting circuit of the light source comprises a pulse generator 103 for imparting pulse signal to a semiconductor laser drive circuit 102 for driving a semiconductor laser 101. As a result, the detecting circuit makes the laser 101 emit a laser beam in pulse state, while it is in standby state. The generator 103 generates pulses, having a short pulse width of the degree which cannot respond by the optical fiber amplifier which operates by an excitation light from the laser 101 and which has a small duty ratio, to the extent which will not generate amplification gain of the amplifier. Thus, the laser 101 is made to emit light at a normal level, while suppressing the gain to substantially '0', and to detect the deteriorated state of the laser 101 by monitoring its intensity.

10. 发明专利

JP2002135817A OPTICAL SWITCH DEVICE AND OPTICAL TRANSMITTER 失效
公开(公告)号：JP2002135817A
公开(公告)日：2002-05-10
申请号：JP2000318486
申请日：2000-10-18
申请人： TOSHIBA CORP
发明人： SUGAWARA MITSURU , YANO TAKASHI , DOBASHI KYOSUKE , KUSAMA KATSUMI , TANIKOSHI SADAO , IDE KAZUHIKO , OTANI MITSURU , TAKAMI MASAYUKI , KITAJIMA MOTOTAKA
IPC分类号： H04B10/03 , H04B10/032 , H04B10/035 , H04B10/07 , H04B10/27 , H04B10/275 , H04B10/29 , H04B10/291 , H04J3/00 , H04J14/00 , H04J14/02 , H04L12/931 , H04Q3/52 , H04Q11/00 , H04Q11/04 , H04B10/02 , H04L12/28
摘要： PROBLEM TO BE SOLVED: To provide an optical switch device and an optical transmitter capable of easily performing redundant switching. SOLUTION: Optical signals inputted to input ports 101a-101f are respectively branched into two by 1×2 light splitters 102a-102f and inputted to twelve input terminals of an optical matrix switch 103 later. Then, these optical signals are outputted from any arbitrary output port of six output ports 104a-104f corresponding to switching setting of the optical matrix switch 103 as a route and optical signals from the same input port can be outputted from two different output ports so that bridging can be performed in the case of redundant switching.

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