公开(公告)号：US20240120116A1

公开(公告)日：2024-04-11

申请号：US18045562

申请日：2022-10-11

申请人： Westinghouse Electric Company LLC

发明人： Christopher P. MEIER ,  Adam M. LAUBHAM

IPC分类号： G21C7/16 ,  G21C17/108

CPC分类号： G21C7/16 ,  G21C17/108

摘要： A hydraulic control unit (“HCU”) configured to control a control rod drive mechanism (“CRDM”) configured to control the nuclear flux produced by a nuclear reactor is disclosed herein. The HCU can include a plurality of valves configured to attenuate a fluid pressure within the CRDM, wherein the attenuation of the fluid pressure is configured to cause a control rod of the CRDM to be inserted or withdrawn from a reactor vessel of the nuclear reactor, and a control circuit including a plurality of relay interfaces, wherein each relay of the plurality of relay interfaces is electrically coupled to a valve of the plurality of valves, a controller electrically coupled to the plurality of relay interfaces, and a communications circuit communicably coupled to a header controller, wherein the communications circuit is configured to transmit and receive signals between the controller and the header controller.

公开(公告)号：US11721450B2

公开(公告)日：2023-08-08

申请号：US16928831

申请日：2020-07-14

申请人： Westinghouse Electric Company LLC

发明人： Michael D. Heibel ,  Matthew D. McArdle

IPC分类号： G21G1/02 ,  G21C17/108 ,  G21C19/22

CPC分类号： G21G1/02 ,  G21C17/108 ,  G21C19/22

摘要： A device that will enable material to be irradiated as needed to produce a desired transmutation product inside the core of a nuclear reactor. The device provides a means for monitoring neutron flux in the vicinity of the material being irradiated to allow determination of the amount of transmutation product being produced. The device enables the irradiated material to be inserted into the reactor and held in place at desired axial positions and to be withdrawn from the reactor when desired without shutting down the reactor. The majority of the device may be re-used for subsequent irradiations. The device also enables the simple and rapid attachment of unirradiated target material to the portion of the device that transmits the motive force to insert and withdraw the target material into and out of the reactor and the rapid detachment of the irradiated material from the device for processing.

公开(公告)号：US09922738B2

公开(公告)日：2018-03-20

申请号：US13800303

申请日：2013-03-13

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Masataka Yanagisawa ,  Toshifumi Sato ,  Tadashi Miyazaki

IPC分类号： G21C17/108 ,  G21C17/10

CPC分类号： G21C17/108 ,  G21C17/10

摘要： A traveling reactor power monitoring system includes a drive control unit configured to drive a motor and move a traveling probe in a guide tube by driving the motor, a torque sensor configured to measure a drive torque of the motor, and a drive torque monitoring unit that generates an alarm when the measured drive torque exceeds a predefined upper threshold, and that bypasses generating the alarm for a predefined bypass time, the predefined bypass time starting at a time of starting driving the motor.

公开(公告)号：US20170200516A1

公开(公告)日：2017-07-13

申请号：US15104487

申请日：2015-09-04

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Yuki Takemoto ,  Kazuki Kirimura ,  Shinya Kosaka

IPC分类号： G21C17/108

CPC分类号： G21C17/108 ,  G21C17/10 ,  G21D3/001 ,  G21D3/005 ,  G21D3/10 ,  Y02E30/40

摘要： In a device for and a method of reconstructing axial measurement values in a nuclear fuel, which is a device that calculates an axial reaction rate distribution by reconstructing a plurality of measurement values measured by a plurality of neutron flux detectors that are disposed at predetermined intervals in a fuel assembly along the axial direction of the fuel assembly, because a reconstruction parameter generator that generates a reconstruction parameter on the basis of core design data, or core analysis data, and a data adjustment factor; and an axial reaction rate distribution generator that calculates an axial reaction rate distribution on the basis of the measurement values that are measured by the neutron flux detectors and the reconstruction parameter that is generated by the reconstruction parameter generator are provided, an accurate axial measurement distribution in the nuclear fuel is obtained by reconstructing the measurement values.

公开(公告)号：US09613725B2

公开(公告)日：2017-04-04

申请号：US13783430

申请日：2013-03-04

申请人： Kenji Ohsaka

发明人： Kenji Ohsaka

IPC分类号： G21C17/00 ,  G21C17/108

CPC分类号： G21C17/108

摘要： A neutron detector detects a neutron flux distribution of the inside of a reactor. The neutron detector includes a thimble guide tube that is inserted inside of the reactor, for inserting the neutron detector. A drive apparatus is connected to the thimble guide tube for inserting or extracting the neutron detector into or out of the thimble guide tube. A vacuum unit controls the vacuum state in the thimble guide tube. A supply unit supplies carbon dioxide gas. A gas purge unit is connected to the supply unit and conducts gas purge in the thimble guide tube. A gate valve is provided between the thimble guide tube and the drive apparatus, and performs an open/close operation. A control apparatus controls the gate valve, the drive apparatus, the vacuum unit, the supply unit, and the gas purge unit.

公开(公告)号：US09287013B2

公开(公告)日：2016-03-15

申请号：US12377472

申请日：2007-07-30

申请人： Daisuke Sato ,  Makoto Nakano ,  Jun Kimura

发明人： Daisuke Sato ,  Makoto Nakano ,  Jun Kimura

IPC分类号： G21C17/00 ,  G21C7/36 ,  G21C17/10 ,  G21C17/112 ,  G21C17/108

CPC分类号： G21C7/36 ,  G21C17/10 ,  G21C17/108 ,  G21C17/112 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/39

摘要： A moderator temperature coefficient measurement apparatus includes: an input section receiving plant data including a coolant temperature signal being time series data on a temperature of a coolant of a light water reactor, and a reactivity signal indicating time series data on a reactivity calculated based on a detection value of a neutron flux in the light water reactor; a singular value decomposition section decomposing the coolant temperature signal into N components T′1 (t) to T′N (t), and the reactivity signal into M components ρ′1 (t) to ρ′M (t) by a singular value decomposition method; a combination section generating a selected combination being a combination of T′i (t) selected from the N components T′1 (t) to T′N (t) and ρ′j (t) selected from the M components ρ′1 (t) to ρ′M (t); and a temperature coefficient calculation section calculating a moderator temperature coefficient based on auto and cross power spectral density functions obtained by applying a Fourier transformation to the selected combination. The moderator temperature coefficients can be detected at high precision without changing states of the plant.

摘要翻译： 调节器温度系数测量装置包括：输入部分，其接收包括冷却剂温度信号的工厂数据，冷却剂温度信号是关于轻水反应堆的冷却剂的温度的时间序列数据，以及表示基于 轻水反应堆中中子通量的检测值; 一个奇异值分解部分将冷却剂温度信号分解为N个分量T'1（t）至T'N（t），并将反应性信号分解成M个分量“1（t）至”r（M）） 奇异值分解方法; 产生从N个分量T'1（t）到T'N（t）中选择的T'i（t）和从M个分量选择的＆rgr; j（t）的组合的选择组合的组合部分。 '1（t）to＆rgr;'M（t）; 以及温度系数计算部，其基于通过对所选择的组合应用傅立叶变换而获得的自动和交叉功率谱密度函数来计算主持人温度系数。 可以高精度地检测调节剂温度系数，而不改变设备的状态。

公开(公告)号：US20160070009A1

公开(公告)日：2016-03-10

申请号：US14783335

申请日：2014-03-31

申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES

发明人： Mounir BAKKALI ,  Romain COULON ,  Stephane NORMAND

IPC分类号： G01T3/00 ,  G21C7/36

CPC分类号： G01T3/00 ,  G21C7/36 ,  G21C17/108

摘要： A device for processing signals detected by a set of n neutron detectors, the device including: n switches each including an input and an output, each switch receiving, on its input, a detected signal coming from a different detector, outputs of the n switches being linked to each other; and a clock generator including a clock circuit and a sequential counter controlled by the clock circuit and configured to deliver a plurality of pulse series, each pulse series of the plurality of pulse series constituting a control signal of a different switch, the pulses of any two pulse series of the plurality of pulse series being disjointed.

摘要翻译： 一种用于处理由一组n个中子探测器检测的信号的装置，该装置包括：n个开关，每个开关包括输入和输出，每个开关在其输入上接收来自不同检测器的检测信号，n个开关的输出 相互联系; 以及时钟发生器，其包括时钟电路和由时钟电路控制的顺序计数器，并被配置为传送多个脉冲序列，所述多个脉冲序列中的每个脉冲序列构成不同开关的控制信号，任何两个脉冲 多个脉冲序列的脉冲序列不连续。

公开(公告)号：US20150146837A1

公开(公告)日：2015-05-28

申请号：US14541802

申请日：2014-11-14

申请人： Kabushiki Kaisha Toshiba

发明人： Tadashi MIYAZAKI ,  Toshiaki ITO

IPC分类号： G21C17/00 ,  G01T3/00

CPC分类号： G21D3/06 ,  G21C17/108 ,  G21D3/001 ,  Y02E30/40

摘要： According to an embodiment, an oscillation power range monitor system has a plural of OPRM units. Each of the OPRM units has: the receiving cell-output set signals and averaging the cell-output set signals; a time average calculating unit calculating a time average cell value; a normalized cell value calculating unit calculating a normalized cell value; a trip determining unit outputting a reactor trip signal if amplitude or growth rate of oscillation or period of oscillation of the normalized cell value has exceeded a prescribed condition; a signal and prescribed value adjusting unit adjusting the relation between the normalized cell value and the specific value, thereby compensating for the deterioration in the neutron flux sensitivity of any LPRM detector in order to keep outputting the reactor trip signal.

摘要翻译： 根据实施例，振荡功率范围监视系统具有多个OPRM单元。 每个OPRM单元具有：接收单元输出设置信号并对单元输出设置信号进行平均; 计算时间平均单元值的时间平均计算单元; 归一化单元值计算单元，计算归一化单元值; 跳闸确定单元，如果振荡或振荡的增长率或归一化单元值的振荡周期超过规定的条件，则输出电抗器跳闸信号; 信号和规定值调整单元，调整归一化单元值与特定值之间的关系，从而补偿任何LPRM检测器的中子通量灵敏度的劣化，以便保持输出电抗器跳闸信号。

公开(公告)号：US09025719B2

公开(公告)日：2015-05-05

申请号：US14036552

申请日：2013-09-25

申请人： James Edward Fawks, Jr.

发明人： James Edward Fawks, Jr.

IPC分类号： G21C17/108 ,  G01T3/00 ,  G01T7/00

CPC分类号： G21C17/108 ,  G01T3/00 ,  G01T7/005

摘要： A method and apparatus for the calibration of neutron flux monitoring devices used in a nuclear reactor core. The apparatus includes a transverse in-core probe (TIP) cable with a neutron absorber located a fixed distance apart from a TIP detector. The neutron absorber may be passed within close proximity of the neutron flux monitoring device such that a perceived drop in measured neutron flux occurs, whereupon the cable may be repositioned relative to the monitoring device to ensure that the TIP detector is within close proximity of the monitoring device for purposes of calibrating the monitoring device.

摘要翻译： 用于核反应堆核心中使用的中子通量监测装置的校准方法和装置。 该装置包括横向磁芯探针（TIP）电缆，其中中子吸收器位于与TIP检测器相距一定距离处。 中子吸收器可以在中子通量监测装置的非常接近的范围内通过，使得发生测量的中子通量的感知下降，于是可以相对于监测装置重新定位电缆，以确保TIP检测器在监测 设备用于校准监控设备。

公开(公告)号：US08964926B2

公开(公告)日：2015-02-24

申请号：US13233518

申请日：2011-09-15

申请人： Shingo Nakamura ,  Tatsuro Kobayashi

发明人： Shingo Nakamura ,  Tatsuro Kobayashi

IPC分类号： G21C17/108 ,  G01T1/17

CPC分类号： G21C17/108 ,  G01T1/17

摘要： An ex-core nuclear instrumentation system in which the width of measurable neutron detector current can be accurately widened is obtained. In order to output the condition of neutron flux in operation by performing arithmetic processing of a current value measured by a neutron detector by using a detector signal processing circuit, the detector signal processing circuit includes a current/voltage conversion unit which converts the current value converted by the neutron detector into a voltage value corresponding to the current value; and a variable gain amplification unit which has an operational amplifier having a resistance circuit for corresponding to current levels, the resistance circuit being capable of selecting a gain, and a D/A converter that adjusts the gain, and amplifies the voltage value converted by the current/voltage conversion unit.

摘要翻译： 获得可以准确加宽可测量中子探测器电流宽度的核心核仪器系统。 为了通过使用检测器信号处理电路对由中子检测器测量的电流值进行算术处理来输出操作中的中子通量的条件，检测器信号处理电路包括电流/电压转换单元，其将当前值转换 由中子探测器转换成对应于电流值的电压值; 以及可变增益放大单元，其具有运算放大器，该运算放大器具有对应于电流水平的电阻电路，所述电阻电路能够选择增益;以及D / A转换器，其调整所述增益，并放大由所述电压转换器 电流/电压转换单元。