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1. 发明专利

JP2006023215A Ultrasonic inspection method, ultrasonic inspection device and guide wave transducer for the ultrasonic inspection device 有权
标题翻译：超声波检查方法，超声波检查装置和超声波检测装置的导波变换器
公开(公告)号：JP2006023215A
公开(公告)日：2006-01-26
申请号：JP2004202591
申请日：2004-07-09
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリングサービス , 株式会社日立製作所
发明人： NAGASHIMA YOSHIAKI , ENDO MASAO , KOIKE MASAHIRO , NARUSHIGE MASASHI , KOGA ISAO
IPC分类号： G01N29/04 , G01N29/24
摘要： PROBLEM TO BE SOLVED: To ultrasonically inspect an inspection target at least a part of which is embedded, while suppressing the attenuation of guide waves.
SOLUTION: A guide wave transmitter/receiver 2 for receiving the trigger of transmission from a computer 4 applies a signal for driving the guide wave to a guide wave transducer 1 and the guide wave transducer 1 excites the guide wave 13 slower than concrete in sonic velocity to propagate the same to piping 11. The guide wave 13 axially propagates through the piping 11 and the component of the guide wave reflected from a discontinuous point due to cracks or reduced wall thickness is received by the guide wave transducer 1; and the receiving signal in which receiving waveform data is contained is inputted to the guide wave transmitter-receiver 2 to be amplified and the amplified receiving signal is converted into a digital signal, by an A/D converter 3 to be transmitted to the computer 4. Next, the computer 4 analyzes the receiving waveform data of the guide wave contained in the digital signal and calculates the position, in the axial direction of flaw from the appearance time of the signal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在抑制引导波的衰减的同时，对其至少一部分被嵌入的检查对象进行超声波检查。解决方案：用于从计算机4接收传输触发的引导波发射器/接收器2将用于驱动引导波的信号施加到引导波传感器1，并且引导波换能器1激励导波13比混凝土慢引导波13轴向传播通过管道11，引导波传感器1接收由于裂纹或壁厚减小而从不连续点反射的引导波的分量; 并且其中包含接收波形数据的接收信号被输入到引导波发射器 - 接收器2以被放大，并且放大的接收信号被A / D转换器3转换成数字信号以传送到计算机4 接下来，计算机4分析数字信号中包含的引导波的接收波形数据，并根据信号的出现时间计算出缺陷轴向的位置。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2008064540A Piping inspection method using guide wave and piping inspection device 有权
标题翻译：使用导波和管道检查装置的管道检查方法
公开(公告)号：JP2008064540A
公开(公告)日：2008-03-21
申请号：JP2006241401
申请日：2006-09-06
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリング・アンド・サービス , 株式会社日立製作所
发明人： NAGASHIMA YOSHIAKI , ENDO MASAO
IPC分类号： G01N29/04 , G01N29/44
摘要： PROBLEM TO BE SOLVED: To provide a piping inspection method using a guide wave capable of more shortening the time required in inspection and capable of detecting the depth of a reduced wall thick part and the piping circumferential length of the reduced wall thick part.
SOLUTION: The probes 1a-1d of an ultrasonic probe group 1 and the probes 2a-2d of an ultrasonic probe group 2 are arranged on the piping 7 in the circumference. The probes 1a-1d and 2a-2d transmit the guide wave 6 to the piping 7 and receive the reflected signals from the reduced wall thick part 7b. These reflected signals are inputted to a signal processor 5B through an A/D converter 4. The signal processor 5B is constituted so as to calculate the waveform of a plurality of the circumferential modes of the circumferential guide wave of the piping the area of the reduced wall thick part formed in the piping on the basis of the amplitude of the waveform of a zero-order circumferential mode, the circumferential length of the reduced wall thickness part and the area of the reduced wall thick part the depth of the reduced wall thick part on the basis of the area of the reduced wall thick part and the circumferential length.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种使用能够更加缩短检查所需时间并且能够检测减壁部的深度和缩小壁厚部的配管周长的引导波的管道检查方法。解决方案：超声波探针组1的探针1a-1d和超声波探针组2的探针2a-2d在周边配置在配管7上。探针1a-1d和2a-2d将引导波6传送到配管7，并从减壁厚部7b接收反射信号。这些反射信号通过A / D转换器4输入到信号处理器5B中。信号处理器5B被构成为计算出管道周向引导波的多个周向模式的波形，基于零阶圆周模式的波形的振幅，减薄的壁厚部分的圆周长度和减壁的厚部分的面积减小的壁厚部分的深度，形成在管道中的壁厚部分基于减壁厚部分的面积和圆周长度。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007107885A Piping inspection device and method therefor 有权
标题翻译：管道检查装置及其方法
公开(公告)号：JP2007107885A
公开(公告)日：2007-04-26
申请号：JP2005295827
申请日：2005-10-11
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリング・アンド・サービス , 株式会社日立製作所
发明人： NAGASHIMA YOSHIAKI , ENDO MASAO , KOGA ISAO
IPC分类号： G01N29/04 , G01N29/44
摘要： PROBLEM TO BE SOLVED: To well perform the non-destructive inspection of piping in a good S/N ratio using an ultrasonic wave.
SOLUTION: A computer 5 is constituted so as to produce a guide wave 6 in piping 7 by individually applying a transmission signal to respective first ultrasonic probes 1a-1d and second ultrasonic probes 2a-2d to calculate the transmitting and receiving amplitude correction factor on the basis of the data of the reflected waves thereof. Next, a set of the first ultrasonic probe 1a and the second ultrasonic probe 2a, both of which adjacent to each other in the axial direction of the piping, is selected to apply the transmission signal, which is corrected in voltage by the transmitting and receiving amplitude correction factor, to the set of the respective ultrasonic proves so as to impart time delay becoming the same phase in an inspection direction and becoming an inverse phase mutually in an inverse inspection phase and the reflected waves are received by the respective ultrasonic probes to store the receiving signals as the data. This operation is performed with respect to the set of all of the ultrasonic probes. Subsequently, the amplitudes of the receiving signal data of the respective ultrasonic probes are corrected from the transmitting and receiving amplitude correction factor and time delay is imparted to the receiving signal data of the respective ultrasonic probes so as to become a phase matching direction and all of the receiving signals after correction are synthesized.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：使用超声波以良好的S / N比良好地执行管道的无损检测。解决方案：计算机5构成为通过分别向各自的第一超声波探头1a-1d和第二超声波探头2a-2d施加发送信号，从而在配管7中产生引导波6，以计算发送和接收振幅校正基于其反射波的数据的因子。接下来，选择在配管的轴向彼此相邻的一组第一超声波探头1a和第二超声波探头2a，以通过发送和接收来施加在电压中校正的发送信号振幅校正因子到各个超声波检测的结果证明，以便在检查方向上使时间延迟成为相同的相位，并且在反向检查阶段中相互成为相位，反射波被各个超声波探头接收以存储接收信号作为数据。相对于所有超声波探头的一组进行该操作。随后，从发送和接收振幅校正因子校正各个超声波探头的接收信号数据的振幅，并将时间延迟赋予各个超声波探头的接收信号数据，以便成为相位匹配方向合成校正后的接收信号。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2005043051A Method for mitigating stress corrosion cracking in structural material for nuclear power plant 有权
标题翻译：用于减轻核电厂结构材料应力腐蚀开裂的方法
公开(公告)号：JP2005043051A
公开(公告)日：2005-02-17
申请号：JP2003199572
申请日：2003-07-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIDA KAZUNARI , WADA YOICHI , NAGASE MAKOTO , TACHIBANA MASAHIKO , ENDO MASAO , FUSE MOTOMASA , USUI NAOSHI , AIZAWA MOTOHIRO
IPC分类号： G21D3/08 , G21C17/00 , G21D1/00
CPC分类号： G21C17/0225
摘要： PROBLEM TO BE SOLVED: To provide a method for mitigating stress corrosion cracking in a structural material for a nuclear reactor which makes it possible to restrain the dose rate of a main steam pipe from rising without causing such side effects as a rise in the concentration of radioactive cobalt (Co-60) in cooling water for the reactor.
SOLUTION: Reducing nitride containing the nitrogen whose number of oxidations is negative is injected into reactor water in a nuclear power generation plant with a boiling water reactor. The injection of the reducing nitride containing the nitrogen whose number of oxidations is negative into the reactor water makes it possible to mitigate the stress corrosion cracking in the structural material for the reactor without causing such side effects as the rise in the concentration of the cobalt (Co-60).
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种减轻核反应堆结构材料中的应力腐蚀开裂的方法，其使得可以抑制主蒸汽管的剂量率上升而不会引起副产物的升高反应堆冷却水中放射性钴（Co-60）的浓度。解决方案：将具有氧化数为负的氮的氮化物还原为具有沸水反应器的核发电厂的反应器水中。将含有氧数为负的氮的还原氮氧化物注入反应器水中使得可以减轻反应器的结构材料中的应力腐蚀开裂，而不会引起钴的浓度升高所引起的副作用（钴60）。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

SE503285C2 未知
公开(公告)号：SE503285C2
公开(公告)日：1996-05-13
申请号：SE8701033
申请日：1987-03-12
申请人： HITACHI LTD
发明人： ASAKURA YAMATO , ENDO MASAO , UCHIDA SHUNSUKE , MATSUDA MASAMI , SUZUKI KAZUMICHI
IPC分类号： G01N27/06 , C23C14/56 , G01R27/22 , G01N27/02
摘要： A method and apparatus for analyzing the electrode impedance, in which an a.c. voltage with its frequency varied at intervals is applied between a pair of measuring electrodes dipped in the sample liquid, the complex a.c. impedance between the electrodes is measured at each frequency, the maximum value among absolute values of imaginary part of the measured impedance values is detected as the electrode polarization resistance, and the solution resistance of the liquid is calculated by subtracting the detected maximum value from the real part of the impedance corresponding to the maximum imaginary part.

6. 发明专利

JP2000105290A FUEL ASSEMBLY, FUEL ROD SUPPORT MEANS AND MANUFACTURE THEREFOR 失效
公开(公告)号：JP2000105290A
公开(公告)日：2000-04-11
申请号：JP19978099
申请日：1999-07-14
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： NISHINO YOSHITAKA , ENDO MASAO , KUBO TOSHIO , YASUDA TAKAYOSHI
IPC分类号： G21C3/34 , G21C3/00 , G21C3/30
摘要： PROBLEM TO BE SOLVED: To restrain hydrogen absorption even when a fuel rod support means is thinned and to cope with high burn-up performance of fuel. SOLUTION: This fuel assembly is mainly composed of a fuel rod 1, a water rod 2, a fuel spacer 3 as a fuel support means, and an upper tie plate 4 and a lower tie plate 5 as end support means. A metal oxide coat is formed on the most part of the surface of the fuel spacer 3. The thickness of the metal oxide coat is 0.02-1 μm, preferably 0.02-0.3 μm. The metal oxide coat includes 50 wt.% of Zr(zirconium), and one kind selected from titanium, niobium, iron, and chrome may be included.

7. 发明专利

JPH1123757A FUEL CLADDING PIPE AND METHOD AND DEVICE FOR ITS ANODIZATION TREATMENT 失效
公开(公告)号：JPH1123757A
公开(公告)日：1999-01-29
申请号：JP18137197
申请日：1997-07-07
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： KUBO TOSHIO , FUJIWARA KENICHI , YASUDA TAKAYOSHI , NISHINO YOSHITAKA , ENDO MASAO
IPC分类号： G21C3/06 , C25D11/00 , C25D11/34 , C25D21/02
摘要： PROBLEM TO BE SOLVED: To improve resistance to corrosion and wear and at the same time reduce the radioactivity level in a nuclear power plant by making specific the thickness of an oxide film being provided on an outer-periphery surface by anodization in an electrolyte. SOLUTION: A fuel rod arranged in a fuel assembly for boiling water nuclear reactor has a fuel cladding pipe 2 that is made of, for example, zirconium alloy where, for example, an uranium pellet 3 is loaded, and an oxide film 9 is formed on the outer-periphery surface by anode oxidation with ammonium borate or caustic potash solution as electrolyte. When the thickness of the oxide film 9 exceeds 0.6 μm, film quality becomes porous, which is not preferable in terms of the corrosion resistance and wear resistance of the cladding pipe 2, so that the thickness is preferably 0.3 μm or more in terms of influence to the radiation level in a nuclear power plant due to, for example, Co in furnace water. The oxide film 9 with a suitable film thickness can be formed by performing anodization treatment with an electrolyte concentration and its conductivity, arrival voltage, and electrolyte temperature within a specific range.

8. 发明专利

JPH08179067A NUCLEAR FUEL CLADDING PIPE 失效
公开(公告)号：JPH08179067A
公开(公告)日：1996-07-12
申请号：JP31976094
申请日：1994-12-22
申请人： HITACHI LTD
发明人： ENDO MASAO , NISHINO YOSHITAKA , IBE HIDEFUMI
IPC分类号： G21C3/06
摘要： PURPOSE: To suppress the corrosion of a cladding pipe by adding a catalyst element accelerating the re-coupling of a radioactive ray decomposition product of water and extinguishing an oxidizing component to the surface of the boiling water reactor fuel rod cladding pipe on in the material or to the surface layer. CONSTITUTION: A catalyst element accelerating the re-coupling of a radioactive ray decomposition product of water and extinguishing an oxidizing component is added to the surface of a boiling water reactor fuel rod cladding pipe or in the material or to the surface layer. The distribution of the catalyst element accelerating the re-coupling is preferably made higher in the peripheral direction of the cladding pipe 4. When the cladding pipe 4 having the concentration distribution of the catalyst element is to be manufactured, a Zircaloy cladding pipe 7 is made of a zirconium alloy, the re-coupling catalyst element is ionized by an accelerator 9, it is applied with a potential for electrostatic acceleration, and it is injected to the surface of the cladding pipe 4 installed on a fuel rod sheath pipe surface treating device 10 evacuated by an exhausting device 11 in advance. A fuel rod cladding pipe driving device 12 and the accelerator 9 are synchronously controlled by a surface treatment operation control system 13 for uniform injection.

9. 发明专利

JPH0375598A VENTILATOR FOR NUCLEAR REACTOR CONTAINMENT VESSEL 失效
公开(公告)号：JPH0375598A
公开(公告)日：1991-03-29
申请号：JP21261189
申请日：1989-08-18
申请人： HITACHI LTD
发明人： KARASAWA HIDETOSHI , ENDO MASAO , UTAMURA MOTOAKI , BABA TSUTOMU
IPC分类号： G21F9/02
摘要： PURPOSE:To remove a plenty of particles and to reduce the size of device by making steam and large diameter aerosol particles (particles) collide with a trap board and removing them at a pre-stage pat, and by removing small diameter particles through a filter placed at a post-stage part. CONSTITUTION:Upon failure of nuclear reactor, a pat of steam that spouting into a suppression pool 5 from a nuclear reactor containment vessel 1 via a vent tube 4, is condensated, and a part of particles is transferred to water and roved. Moreover, when pressure in the vessel 1 increases, an isolation valve 6 is opened and the pressure in the vessel 1 is released through a containment vessel ventilator A, and, at that tie, flow of the steam and the particles entering into a pre-stage 7 through a piping 11, produces a turbulent flow within a trap board 9 and therewith the steam becomes water droplets, the particles stick to the trap board 9 by colliding inertia, soluble substances dissolve into the water droplets and insoluble substances are discharged together with the water stream and collected in a central pipe 10 and returned to the vessel 1 through piping 13. Furthermore, particles which are not caught 9 at the pre-stage 7 are removed through a filter 12 at a post-stage 8, and remaining gases are discharged out to the environment through piping 11b, a valve 6 and an offgas treatment system.

10. 发明专利

JPS6352092A FUEL ROD FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS6352092A
公开(公告)日：1988-03-05
申请号：JP19541486
申请日：1986-08-22
申请人： HITACHI LTD
发明人： NAGASE MAKOTO , ASAKURA YAMATO , KARASAWA HIDETOSHI , ENDO MASAO , SAKAGAMI MASAHARU , YUSA HIDEO
IPC分类号： G21C3/06

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