公开(公告)号：US08524056B2

公开(公告)日：2013-09-03

申请号：US12696355

申请日：2010-01-29

Applicant: Kazushige Ishida ,  Yoichi Wada ,  Masahiko Tachibana ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa ,  Nobuyuki Ota

Inventor： Kazushige Ishida ,  Yoichi Wada ,  Masahiko Tachibana ,  Motomasa Fuse ,  Naoshi Usui ,  Motohiro Aizawa ,  Nobuyuki Ota

IPC: G01N17/00 ,  G01N27/26 ,  G21C9/00

CPC classification number: G21C17/022 ,  G01N17/04

Abstract: An electrochemical corrosion potential sensor (ECP sensor) has an electrode cap, an electrode fixing body, a tubular insulator, a tubular metallic housing, and a conductive wire. Both ends of the tubular insulator are connected to the electrode fixing body and the tubular metallic housing respectively. A conductive wire passes through the tubular insulator and the tubular metallic housing, and is connected to an inner surface of the electrode fixing body. The electrode cap 11 disposed to cover an outer surface of the electrode fixing body. The ECP sensor with such a construction can lengthen the lifetime.

Abstract translation: 电化学腐蚀电位传感器（ECP传感器）具有电极盖，电极固定体，管状绝缘体，管状金属外壳和导线。 管状绝缘体的两端分别与电极固定体和管状金属外壳连接。 导线穿过管状绝缘体和管状金属外壳，并连接到电极固定体的内表面。 设置为覆盖电极固定体的外表面的电极帽11。 具有这种结构的ECP传感器可以延长使用寿命。

公开(公告)号：US20130195236A1

公开(公告)日：2013-08-01

申请号：US13753766

申请日：2013-01-30

Applicant: HITACHI-GE NUCLEAR ENERGY, LTD

Inventor： Takashi SODA ,  Akihiro KANNO ,  Nobuo MURAKAMI ,  Fujio YOSHIKUBO

IPC: G21C17/003

CPC classification number: G21C17/003 ,  C21D7/06 ,  C21D9/08 ,  G21C21/00

Abstract: Disclosed is a water jet peening method that includes the steps of: preparing a water jet peening apparatus having a supporting member, a first divider plate, a nozzle support body, and a second divider plate; inserting the water jet peening apparatus into a piping in which a structure or electronic device is mounted that is susceptible to damage by a jet of water discharged from a jet nozzle or by shock waves; disposing either the first divider plate or the second divider plate between the jet nozzle and the structure or electronic device; filling water into an internal area formed in the piping between the first divider plate and the second divider plate; and subjecting the inner surface of the piping to water jet peening by allowing the jet nozzle to discharge a jet of water into the water in the internal area.

Abstract translation: 本发明公开了一种喷水喷丸处理方法，包括以下步骤：制备具有支撑构件，第一分隔板，喷嘴支撑体和第二分隔板的喷水喷丸处理装置; 将喷水喷丸装置插入到其中安装结构或电子装置的管道中，该结构或电子装置容易受到从喷嘴喷射的水射流或冲击波的损坏; 将第一分隔板或第二分隔板设置在喷嘴和结构或电子装置之间; 将水充填到形成在第一分隔板和第二分隔板之间的管道中的内部区域中; 并且通过允许喷嘴将水射流排放到内部区域中的水中来对管道的内表面进行喷水喷丸处理。

公开(公告)号：US20130193960A1

公开(公告)日：2013-08-01

申请号：US13748165

申请日：2013-01-23

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Akira NISHIMIZU ,  So KITAZAWA ,  Naoyuki KONO ,  Hisashi ENDO ,  Kenichi OTANI ,  Taiichiro YAMADA ,  Hirofumi OUCHI ,  Isao YOSHIDA ,  Yoshio NONAKA ,  Masafumi IMAI

IPC: G01N27/90

CPC classification number: G01N27/9006 ,  G01N27/82 ,  G01N27/902

Abstract: An eddy current flaw detection system includes an eddy current flaw detection probe having a substrate facing an inspection surface, and at least one exciting coil and at least two detecting coils provided on the substrate, a scanning device which scans the probe on the inspection surface, a scan control device which drives and controls the scanning device, an eddy current flaw detection device which acquires results of detection of a plurality of detection points corresponding to combinations of the exciting and detecting coils for each scan position of the probe, and a data processing/display device which processes data from the scan control device and the eddy current flaw detection device and thereby displays a result of flaw detection. The data processing/display device acquires three-dimensional coordinates of the detection points for each scan position of the probe and thereby creates three-dimensional flaw detection data.

Abstract translation: 涡流探伤系统包括具有面向检查面的基板的涡流探伤探头，以及至少一个励磁线圈和设置在基板上的至少两个检测线圈，扫描装置，其在检查面上扫描探头， 驱动和控制扫描装置的扫描控制装置，涡流探伤装置，其检测与探针的每个扫描位置的激励和检测线圈的组合对应的多个检测点的检测结果，以及数据处理 /显示装置，其处理来自扫描控制装置和涡流探伤装置的数据，从而显示缺陷检测的结果。 数据处理/显示装置获取探针的每个扫描位置的检测点的三维坐标，从而创建三维缺陷检测数据。

公开(公告)号：US20130174637A1

公开(公告)日：2013-07-11

申请号：US13728983

申请日：2012-12-27

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Izumi YAMADA ,  Atsushi FUSHIMI ,  Atsushi BABA ,  Akira MURATA ,  Tamotsu ASANO ,  Ryuta HAMA ,  Mikio KOYAMA ,  Hiroaki KATSUYAMA ,  Yoshinori MUSHA

IPC: G01F23/296 ,  G01F25/00

CPC classification number: G01F23/2962 ,  G01F25/0061 ,  G01F25/0076 ,  G21C17/035

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08448439B2

公开(公告)日：2013-05-28

申请号：US12920505

申请日：2009-01-30

Applicant: Koji Namba ,  Shigeo Hatamiya ,  Fumio Takahashi ,  Koji Nishida ,  Susumu Nakano ,  Takanori Shibata

Inventor： Koji Namba ,  Shigeo Hatamiya ,  Fumio Takahashi ,  Koji Nishida ,  Susumu Nakano ,  Takanori Shibata

IPC: F01K3/00 ,  F01K13/02 ,  F01K13/00 ,  F01K17/00 ,  F01K7/34

CPC classification number: F01K17/005

Abstract: An electric power plant supplies steam generated to a high-pressure turbine and a low-pressure turbine. The steam discharged from the low-pressure turbine is condensed with a condenser. Water generated with the condenser is heated with a low-pressure feed water heater and a high-pressure feed water heater. The steam extracted from the high-pressure turbine is supplied to the high-pressure feed water heater. The steam extracted from the low-pressure turbine is compressed with a steam compressor, and the steam whose temperature has been increased is then supplied to the high-pressure feed water heater. The feed water is heated in the high-pressure feed water heater by the steam extracted from the high-pressure turbine and the steam compressed with the steam compressor. Because the feed water is heated by the extracted steam and the compressed steam in the high-pressure feed water heater, the amount of power consumed by the steam compressor can be reduced.

Abstract translation: 电力厂将产生的蒸气供给到高压汽轮机和低压汽轮机。 从低压涡轮机排出的蒸汽与冷凝器一起冷凝。 用冷凝器产生的水用低压给水加热器和高压给水加热器加热。 将从高压涡轮机抽出的蒸汽供给到高压给水加热器。 从低压涡轮机提取的蒸汽用蒸汽压缩机压缩，然后将温度升高的蒸汽供给至高压给水加热器。 供给水在高压给水加热器中被从高压汽轮机抽出的蒸汽和用蒸汽压缩机压缩的蒸汽加热。 由于供水通过提取的蒸汽和高压给水加热器中的压缩蒸汽进行加热，因此可以减少蒸汽压缩机消耗的功率。

公开(公告)号：US20130121451A1

公开(公告)日：2013-05-16

申请号：US13672189

申请日：2012-11-08

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Masahiro HIRATSUKA ,  Atsushi BABA ,  Masahiro KOIKE ,  Taro IKEZUMI ,  Minoru OOTAKA

IPC: G21C17/003

CPC classification number: G21C17/003 ,  G01N29/07 ,  G01N29/46 ,  G01N2291/044 ,  G21C15/25 ,  G21C17/10 ,  Y02E30/31

Abstract: Vibration of a jet pump installed in a reactor pressure vessel of a boiling water reactor is monitored. Ultrasonic waves are transmitted from an ultrasonic sensor installed on an outer surface of the reactor pressure vessel toward a throat and a diffuser of the jet pump. When the ultrasonic waves reach respective outer surfaces of the throat and diffuser, reflected waves are generated at the respective outer surfaces. The ultrasonic sensor receives those reflected waves. The ultrasonic signal process section obtains a distance in the horizontal direction between the throat and the diffuser based on a time difference of the reflected waves reflected from respective reflection surfaces of the throat and diffuser and a sound speed in reactor water in the neighborhood of the throat and diffuser. A relative vibration is obtained based on the change with time of the distance.

Abstract translation: 监测安装在沸水反应器的反应堆压力容器中的喷射泵的振动。 超声波从安装在反应堆压力容器的外表面上的超声波传感器传送到喷射泵的喉部和扩散器。 当超声波到达喉部和扩散器的相应外表面时，在相应的外表面产生反射波。 超声波传感器接收那些反射波。 超声波信号处理部基于从喉部和扩散器的各反射面反射的反射波的时间差和咽喉附近的反应堆水中的声速来获得喉部与扩散器之间的水平方向的距离 和扩散器。 基于距离随时间的变化获得相对振动。

公开(公告)号：US08422617B2

公开(公告)日：2013-04-16

申请号：US12537452

申请日：2009-08-07

Applicant: Renzo Takeda ,  Junichi Miwa ,  Kumiaki Moriya

Inventor： Renzo Takeda ,  Junichi Miwa ,  Kumiaki Moriya

IPC: G21C1/04

CPC classification number: G21C3/326 ,  G21C3/42 ,  G21C2003/3267 ,  Y02E30/38

Abstract: A core of a light water reactor having a plurality of fuel assemblies, which are loaded in said core, having nuclear fuel material containing a plurality of isotopes of transuranium nuclides, an upper blanket zone, a lower blanket zone, and a fissile zone, in which the transuranium nuclides are contained, disposed between the upper blanket zone and the lower blanket zone; wherein a ratio of Pu-239 in all the transuranium nuclides contained in the loaded fuel assembly is in a range of 40 to 60% when burnup of the fuel assembly is 0; sum of a height of the lower blanket zone and a height of the upper blanket zone is in a range of 250 to 600 mm; and the height of said lower blanket zone is in a range of 1.6 to 12 times the height of the upper blanket zone.

Abstract translation: 具有多个燃料组件的轻水反应堆的核心，其装载在所述芯体中，具有含有多个氮氧化物的多个同位素的核燃料材料，上覆层区域，下覆盖区域和裂变区域 其中包含超氧化物核素，设置在上覆盖区域和下覆盖区域之间; 其中，当所述燃料组件的燃耗为0时，包含在所述装载的燃料组件中的所有超铀核素中的Pu-239的比率在40至60％的范围内; 下橡皮布区域的高度和上覆层区域的高度之和在250至600mm的范围内; 并且所述下覆盖带的高度在上毯区的高度的1.6至12倍的范围内。

公开(公告)号：US20120294407A1

公开(公告)日：2012-11-22

申请号：US13455599

申请日：2012-04-25

Applicant: Koji Namba ,  Masaya Ohtsuka ,  Koji Fujimura

Inventor： Koji Namba ,  Masaya Ohtsuka ,  Koji Fujimura

IPC: G21C19/00

CPC classification number: G21C19/07 ,  G21C9/004 ,  G21D3/06 ,  Y02E30/40

Abstract: A nuclear power plant and a fuel pool water cooling facility and method are provided that can suppress the decrease of a water level in a fuel pool with no power supply at the time of malfunction of a circulating water system.The nuclear power plant includes a reactor pressure vessel 2 that encompasses a reactor 1 containing nuclear fuel; a containment vessel 3 for housing the reactor pressure vessel 2; a fuel pool 11 for storing spent fuel 12; a reactor building 10 that houses the reactor pressure vessel 2, the containment vessel 3 and the fuel pool 11; a circulating water system 21 adapted to forced-circulating-cool the fuel pool water 14 in the fuel pool 11; and at least one heat pipe 13 for transferring heat of the fuel pool water 14 in the fuel pool 11 and discharging the heat to the atmosphere.

Abstract translation: 提供一种核电站和燃料池水冷却设备和方法，其能够抑制在循环水系统发生故障时没有电力供应的燃料池中的水位的下降。 核电站包括反应堆压力容器2，其包含含有核燃料的反应器1; 用于容纳反应堆压力容器2的容纳容器3; 用于储存乏燃料12的燃料池11; 容纳反应堆压力容器2的反应堆10，容纳容器3和燃料池11; 适于强制循环冷却燃料池11中的燃料池水14的循环水系统21; 以及至少一个热管13，用于将燃料池11中的燃料池水14的热传递到燃料池11中并将热量排放到大气中。

公开(公告)号：US08213563B1

公开(公告)日：2012-07-03

申请号：US12019103

申请日：2008-01-24

Applicant: Takayuki Arakawa ,  Koichi Machida ,  Norio Kawashima ,  Kazuki Kobayashi ,  Yoshiharu Kikuchi

Inventor： Takayuki Arakawa ,  Koichi Machida ,  Norio Kawashima ,  Kazuki Kobayashi ,  Yoshiharu Kikuchi

IPC: G21C7/00

CPC classification number: G21C7/113 ,  G21C7/10 ,  Y02E30/39

Abstract: A control rod includes a tie-rod, a handle mounted to an upper end portion of the tie-rod, either a connector plate or a fall velocity limiter mounted to a lower end portion of the tie-rod, sheaths having a U-shaped cross-section, welded intermittently to the tie-rod at a plurality of locations in the axial direction of the tie-rod, and having an upper end welded to the handle and a lower end welded to either the connector plate or the fall velocity limiter, and a neutron absorbing member disposed inside each of the sheaths. An upper end of a weld portion located at uppermost position in an axial direction of the tie-rod among a plurality of weld portions between the tie-rod and the sheath is disposed at a position within a range between 0.8 and 13% of total axial length Ls of the sheath below an upper end of the sheath.

Abstract translation: 控制杆包括拉杆，安装到拉杆的上端部分的手柄，安装到拉杆的下端部分的连接板或下落速度限制器，具有U形的护套 横截面，在连杆的轴向方向上的多个位置处间断地焊接到拉杆，并且具有焊接到手柄的上端，以及焊接到连接器板或下落速度限制器的下端 以及设置在每个护套内的中子吸收构件。 位于拉杆和护套之间的多个焊接部分中的位于拉杆的轴向方向上的最上位置处的焊接部分的上端设置在总轴向的0.8和13％之间的范围内的位置 在鞘的上端下方的鞘的长度Ls。

公开(公告)号：US08210043B2

公开(公告)日：2012-07-03

申请号：US12754264

申请日：2010-04-05

Applicant: Hirohisa Mizota ,  Naoyuki Kono ,  Atsushi Baba

Inventor： Hirohisa Mizota ,  Naoyuki Kono ,  Atsushi Baba

IPC: G01N29/04

CPC classification number: G01N29/262 ,  G01N2291/0289 ,  G01N2291/106 ,  G10K11/345

Abstract: An ultrasonic measurement method and an ultrasonic measurement apparatus are capable of performing an inspection for a short time with a high SN ratio and a small variation (that depends on an inspection direction) in sensitivity in a process for detecting a defect in all directions at 360 degrees using a matrix array sensor without performing mechanical scanning in all directions, while reducing noise that is caused by a bottom surface echo. An element selecting circuit selects a group of a plurality of ultrasonic transducer elements for transmission from among ultrasonic transducer elements that constitute a two-dimensional array sensor so that the ultrasonic transducer elements for selected for transmission are arranged in line symmetry with respect to a first line symmetric axis to set the group selected for transmission.

Abstract translation: 超声波测量方法和超声波测量装置能够在360度全方位检测缺陷的处理中以高SN比和小的变化（取决于检查方向）进行短时间的检查 使用矩阵阵列传感器，而不会在所有方向上执行机械扫描，同时减少由底面回波引起的噪声。 元件选择电路从构成二维阵列传感器的超声换能器元件中选择一组用于透射的超声波换能器元件，使得用于选择用于透射的超声波换能器元件相对于第一线线排列成对称 对称轴设置选择的组进行传输。