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公开(公告)号：US11002709B2
公开(公告)日：2021-05-11
申请号：US16202794
申请日：2018-11-28
发明人： Akinori Tamura , Naoyuki Kouno , Tetsuya Matsui , Masahiro Koike
摘要： An ultrasonic inspection system includes an ultrasonic sensor and a control device. The ultrasonic sensor has a piezoelectric element that transmits and receives ultrasonic waves and plate portions and that are arranged so as to contact an upper surface of the piezoelectric element and have different thicknesses. The control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, calculates a sound velocity of the plate portion using the propagation time of the reflected wave and a thickness of the plate portion, and corrects a sound velocity of a pipe and acquires a sound velocity of the plate portion based on the calculated sound velocity. In addition, the control device acquires a propagation time of a reflected wave reflected on an upper surface of the plate portion, and calibrates a time axis based on the propagation time of the reflected wave, a thickness of the plate portion, and the sound velocity of the plate portion.
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公开(公告)号：US10954671B2
公开(公告)日：2021-03-23
申请号：US16633329
申请日：2018-07-05
发明人： Yoshihiko Iga , Hirokuni Ishigaki
摘要： A vibration isolation supporting structure and a vibration isolation system that can prevent a high-frequency vibration and a low-frequency vibration generated on a floor of a building. The vibration isolation supporting structure includes a plurality of supporting portions erected facing each other in a predetermined area near a wall of a floor of a building, a supporting structure supported on the floor by the supporting portions, and a fixing device configured to fix the supporting structure to the floor, and when receiving a release command, the fixing device releases fixing of the supporting structure to the floor.
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公开(公告)号：US10446279B2
公开(公告)日：2019-10-15
申请号：US14831232
申请日：2015-08-20
摘要： To more reliably supply cooling water to a reactor pressure vessel and a reactor containment vessel using a back-up building if a severe accident should occur, a boiling water type nuclear power plant includes a nuclear reactor building including a reactor containment vessel, and an external building, which is installed independently outside the nuclear reactor building and which has an anti-hazard property. The external building has a power source and an operating panel independent of the nuclear reactor building. The boiling water type nuclear power plant includes a water injection pump installed inside the external building, an alternative water injection pipe performing water injection at least on a reactor pressure vessel or the reactor containment vessel in the nuclear reactor building from the water injection pump, and a valve connected to the alternative water injection pipe, making it possible to perform alternative water injection if a severe accident occurs.
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公开(公告)号：US09666312B2
公开(公告)日：2017-05-30
申请号：US14442934
申请日：2012-11-16
摘要： A chimney arranged inside of a reactor pressure vessel of a natural-circulation boiling water reactor is provided. The chimney includes plural flow channels which guide a steam-water two-phase flow generated in a reactor core to the upper part of the reactor pressure vessel. Each of the flow channels is formed by plural flow channel separation walls whose lower-most part is supported by a chimney lattice plate. Chimney spacers that support a horizontal load are arranged between the flow channel separation walls of the adjacent flow channels. Chimney support rings that support the horizontal load are arranged at the outermost periphery of the plural flow channels that are supported by the chimney lattice plate.
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公开(公告)号：US09442203B2
公开(公告)日：2016-09-13
申请号：US14299868
申请日：2014-06-09
发明人： Atsushi Fushimi
IPC分类号： G21C17/108 , G01T3/00 , G21C17/10
CPC分类号： G01T3/006 , G21C17/10 , G21C17/108
摘要： A neutron monitoring system for a nuclear reactor can correct measured neutron flux by taking into consideration neutron moderation based on whether a neutron detector is fully immersed in coolant water or exposed above the water level. The neutron detector and a water detection sensor are mounted at the same height in the nuclear reactor. The water detection sensor includes a thermocouple and a heating element positioned to heat the thermocouple. A temperature measuring component is connected to the thermocouple. A water existence determining component can determine, based on temperature measured by the temperature measuring component, whether the water detection sensor (and thus the neutron detector) is underwater. A correction component can correct a neutron detection signal from the neutron detector in accordance with whether the neutron detector is below or above the water level.
摘要翻译： 核反应堆的中子监测系统可以根据中子探测器是完全浸入冷却水中还是暴露在水位以上，考虑中子调节来校正测得的中子通量。 中子检测器和水检测传感器安装在核反应堆中相同的高度。 水检测传感器包括热电偶和定位成加热热电偶的加热元件。 温度测量部件连接到热电偶。 水存在确定部件可以基于由温度测量部件测量的温度来确定水检测传感器（以及因此中子探测器）是否在水下。 根据中子探测器是否低于或高于水位，校正组件可以校正来自中子探测器的中子检测信号。
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公开(公告)号：US09336913B2
公开(公告)日：2016-05-10
申请号：US14309164
申请日：2014-06-19
发明人： Takako Sumiya , Kenji Noshita , Kazushige Ishida , Nozomu Nagayama , Mamoru Kamoshida , Atsushi Yukita
摘要： Disclosed is a method for treating a radioactive organic waste, the radioactive organic waste including a cation exchange resin adsorbing radionuclide ions, the method including the step of bringing the radioactive organic waste into contact with an organic acid salt aqueous solution containing an organic acid salt and whereby desorbing the radionuclide ions from the cation exchange resin, in which the organic acid salt contained in the organic acid salt aqueous solution includes a cation that is more readily adsorbable by the cation exchange resin than hydrogen ion is. This enables reduction in concentration of a radioactive substance in the radioactive organic waste and reduction in amount of a high-dose radioactive waste.
摘要翻译： 公开了一种处理放射性有机废物的方法，该放射性有机废弃物包括吸附放射性核素离子的阳离子交换树脂，该方法包括使放射性有机废物与含有机酸盐的有机酸盐水溶液接触的步骤，以及 从而从阳离子交换树脂中除去有机酸盐水溶液中含有的有机酸盐的放射性核素离子含有比氢离子更容易被阳离子交换树脂吸附的阳离子。 这样可以减少放射性有机废物中放射性物质的浓度，减少高剂量放射性废物的量。
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117.发明授权公开(公告)号：US09212943B2
公开(公告)日：2015-12-15
申请号：US13728983
申请日：2012-12-27
发明人： Izumi Yamada , Atsushi Fushimi , Atsushi Baba , Akira Murata , Tamotsu Asano , Ryuta Hama , Mikio Koyama , Hiroaki Katsuyama , Yoshinori Musha
IPC分类号： G01F25/00 , G01F23/296 , G21C17/035
CPC分类号： G01F23/2962 , G01F25/0061 , G01F25/0076 , G21C17/035
摘要： An ultrasonic reactor water level measuring device and an evaluation method are provided and prevent a reduction in the measurement accuracy of a water level that is in a wide measurement range. The ultrasonic reactor water level measuring device includes an upper tube extending from a gas phase portion in a reactor, a lower tube extending from a liquid phase portion in the reactor, measurement tubes connected to each other and arranged at multiple stages between the upper tube and the lower tube, and units for generating and receiving ultrasonic waves, the units being arranged at bottom portions of the measurement tubes. The ultrasonic reactor water level measuring device measures levels of water within the measurement tubes and calculates a water level within the reactor from the sum of the measured water levels, the sum excluding an overlapped part of the measurement tubes.
摘要翻译： 提供了一种超声波反应器水位测量装置和评估方法，并且防止了在宽的测量范围内的水位的测量精度的降低。 超声波反应器水位测量装置包括从反应器中的气相部分延伸的上管，从反应器中的液相部分延伸的下管，测量管彼此连接并布置在上管和 下管和用于产生和接收超声波的单元，所述单元布置在测量管的底部。 超声波反应器水位测量装置测量测量管内的水位，并根据测量水位的总和，除了测量管的重叠部分之和计算反应器内的水位。
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公开(公告)号：US09140670B2
公开(公告)日：2015-09-22
申请号：US12975414
申请日：2010-12-22
申请人： So Kitazawa , Naoyuki Kono , Atsushi Baba
发明人： So Kitazawa , Naoyuki Kono , Atsushi Baba
CPC分类号： G01N29/0663 , G01N29/262 , G01N29/4409 , G01N2291/105
摘要： An ultrasonic inspection method and an ultrasonic inspection device allow three-dimensional inspection data and three-dimensional shape data to be appropriately positioned on a display screen and allow a defect echo and a shape echo to be quickly identified even when information on the relative positions of a probe and an object to be inspected is not provided. The ultrasonic inspection data that is generated from the waveforms of ultrasonic waves received by an ultrasonic probe is compared with a plurality of ultrasonic propagation data pieces calculated by a ray tracing method on the basis of the three-dimensional shape data on an object to be inspected. The position of the three-dimensional inspection data or the three-dimensional shape data is moved relative to the other data position on the basis of the comparison results, thereby displaying the three-dimensional inspection data and the three-dimensional shape data while overlapping each other.
摘要翻译： 超声波检查方法和超声波检查装置允许三维检查数据和三维形状数据适当地定位在显示屏幕上，并且即使当关于相对位置的信息的信息也可以快速识别缺陷回波和形状回波 不提供探针和被检查物体。 将由超声波探头接收的超声波的波形产生的超声波检查数据与通过光线追踪方法计算出的多个超声波传播数据进行比较，并根据对被检体的三维形状数据 。 基于比较结果，三维检查数据或三维形状数据的位置相对于其他数据位置移动，从而显示三维检查数据和三维形状数据，同时重叠每个 其他。
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公开(公告)号：US20150228362A1
公开(公告)日：2015-08-13
申请号：US14695214
申请日：2015-04-24
发明人： Renzo Takeda , Junichi Miwa , Kumiaki Moriya
摘要： A core of a light water reactor has a plurality of fuel assemblies. The fuel assemblies include a plurality of fuel rods in which a lower end is supported by a lower tie-plate and an upper end is supported by an upper tie-plate. The fuel rods form plenums above a nuclear fuel material zone and have a neutron absorbing material filling zone under the nuclear fuel material zone. Neutron absorbing members attached to the upper tie-plate are disposed between mutual plenums of the neighboring fuel rods above the nuclear fuel material zone. The neutron absorbing members have a length of 500 mm and are positioned at a distance of 300 mm from the nuclear fuel material zone. Even if the overall core is assumed to become a state of 100% void, no positive reactivity is inserted to the core.
摘要翻译： 轻水反应堆的核心具有多个燃料组件。 燃料组件包括多个燃料棒，其中下端由下连接板支撑，并且上端由上连接板支撑。 燃料棒在核燃料材料区之上形成集气室，并在核燃料材料区下方具有中子吸收材料填充区。 附接到上连接板的中子吸收构件设置在核燃料材料区域上方的相邻燃料棒的相互增压室之间。 中子吸收构件具有500mm的长度并且位于与核燃料材料区300mm的距离处。 即使假设整个核心成为100％空白的状态，也不会向核心插入积极的反应性。
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公开(公告)号：US08888069B2
公开(公告)日：2014-11-18
申请号：US13075228
申请日：2011-03-30
CPC分类号： G21D1/02 , B23K20/122 , B23K20/1275 , B23K2101/006 , B23K2101/34 , B23K2103/02 , B23K2103/08 , B23K2103/12 , B23K2103/14 , B23K2103/15 , B23K2103/18 , B23K2103/26 , C21D2251/04 , C21D2261/00 , C22F1/10 , F16K3/12 , F16K15/03 , F16K25/005 , Y02E30/40 , Y10T29/49425 , Y10T428/12861
摘要： The invention provides a valve which suppresses a continuous corrosion of a chemical compound phase such as an eutectic carbide or the like in a valve seat, and improves a corrosion resistance, an impact resistance and an erosion resistance of the valve seat. The invention disperses a chemical compound phase such as the eutectic carbide or the like crystallizing in a dendrite gap as a granular shape or a blocky shape which is equal to or less than about 100 μm, by moving a tool rotating in a crimped state by a load application to a vertical direction to a surface of the valve seat so as to carry out a friction stir processing, and forming a weld metallographic structure of a surface layer portion of the valve seat as a cubic.
摘要翻译： 本发明提供一种阀，其抑制阀座中的共晶碳化物等化合物相的连续腐蚀，提高阀座的耐腐蚀性，耐冲击性和耐冲蚀性。 本发明通过将以卷曲状态旋转的工具移动到通过将卷曲状态旋转的工具移动到等于或小于约100μm的颗粒形状或块状形状的枝晶间隙中，将诸如共晶碳化物等的化合物相分散在 负载施加到阀座的表面的垂直方向，以进行摩擦搅拌处理，并且将阀座的表面层部分的焊接金相组织形成为立方体。
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