公开(公告)号：US4696789A

公开(公告)日：1987-09-29

申请号：US790625

申请日：1985-10-23

申请人： Minoru Oda ,  Kunio Oba

发明人： Minoru Oda ,  Kunio Oba

IPC分类号： G01T1/167 ,  G21C17/022 ,  G21C17/10 ,  G21C17/108 ,  G21C17/00

CPC分类号： G21C17/022

摘要： A nuclear reactor output power meter for measuring the output of a nuclear reactor from the concentration signal of radioisotope .sup.16 N in a primary coolant loop, having a transient response correction circuit. This correction circuit includes an approximated normal distribution response filter. This filter has a group delay time substantially corresponding to a single circulation time necessary for the primary coolant loop of the nuclear reactor. This filter also has a rise time in the step response substantially corresponding to a spread in the rise time of the .sup.16 N concentration signal due to agitation occurring during the single circulation time.

摘要翻译： 一种核反应堆输出功率计，用于从主冷却剂回路中的放射性同位素16N的浓度信号测量核反应堆的输出，具有瞬态响应校正电路。 该校正电路包括近似正态分布响应滤波器。 该过滤器具有基本上对应于核反应堆的一次冷却剂回路所需的单个循环时间的组延迟时间。 该滤波器也具有基本对应于在单次循环时间期间发生搅拌而在16N浓度信号的上升时间内的扩展的阶跃响应中的上升时间。

公开(公告)号：US3098023A

公开(公告)日：1963-07-16

申请号：US76107458

申请日：1958-09-15

申请人： BABCOCK & WILCOX CO

发明人： SCHLUDERBERG DONALD C

IPC分类号： G21C13/02 ,  G21C17/02 ,  G21C17/022 ,  G21C17/04

CPC分类号： G21C17/02 ,  G21C13/02 ,  G21C17/022 ,  G21C17/04 ,  Y02E30/40

公开(公告)号：US2961543A

公开(公告)日：1960-11-22

申请号：US65142157

申请日：1957-04-08

申请人： ALLIS CHALMERS MFG CO

发明人： HAUCK JON F

IPC分类号： G01T7/02 ,  G21C17/022 ,  G21C17/04 ,  H01J47/08

CPC分类号： G01T7/02 ,  G21C17/022 ,  G21C17/04 ,  G21C17/044 ,  H01J47/08

公开(公告)号：US20240304348A1

公开(公告)日：2024-09-12

申请号：US18668531

申请日：2024-05-20

申请人： GE-Hitachi Nuclear Energy Americas LLC

发明人： Eric Paul LOEWEN ,  Hanying LIU

IPC分类号： G21C17/022 ,  G01F1/68 ,  G21C17/032 ,  G21C17/10 ,  G21C17/112

CPC分类号： G21C17/022 ,  G01F1/68 ,  G21C17/032 ,  G21C17/10 ,  G21C17/112

摘要： The method includes generating first temperature data at a first temperature sensor based on a temperature of a first flowstream of a coolant fluid in a flow channel and heat transfer to the first temperature sensor from a heating element, the heating element being coupled to the first temperature sensor at an interface, the first temperature data indicating a first temperature measured by the first temperature sensor, generating second temperature data at a second temperature sensor based on a temperature of a second flowstream of the coolant fluid in the flow channel and independently of heat generated by the heating element, the first flowstream and the second flowstream running parallel to each other, the second temperature sensor being insulated from the heating element, the second temperature data indicating a second temperature measured by the second temperature sensor.

公开(公告)号：US20240060910A1

公开(公告)日：2024-02-22

申请号：US18260439

申请日：2022-01-03

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Adrien SARI ,  Nouhaila TABTI

IPC分类号： G01N23/09 ,  G01N23/02 ,  G01N23/12 ,  G01T7/00 ,  G01T3/00

CPC分类号： G01N23/09 ,  G01N23/025 ,  G01N23/12 ,  G01T7/005 ,  G01T3/00 ,  G21C17/022

摘要： A method for determining a concentration of an isotope in a fluid, the isotope absorbing neutrons, the method comprising placing a plurality of neutron detectors at various distances from the fluid; irradiating the fluid by a neutron-emitting source, the latter being placed so that emitted neutrons pass through the fluid before reaching the detectors; measuring, by each detector, a quantity representative of an amount of neutrons reaching the detector; and based on the measurements resulting from the measuring, estimating a concentration of the isotope in the fluid. Further, the estimating step includes taking into account a database containing an estimate of the quantity measured by each detector and based on the database, and on the measurements resulting from the measuring step, estimating the concentration of the isotope in the fluid.

公开(公告)号：US11674832B2

公开(公告)日：2023-06-13

申请号：US16952192

申请日：2020-11-19

申请人： Abilene Christian University

发明人： Timothy Lawrence Head ,  Rusty Towell

IPC分类号： G01F1/66 ,  G01F1/667 ,  G21C17/022 ,  G01K1/143 ,  C04B28/18 ,  G01P5/24

CPC分类号： G01F1/667 ,  C04B28/18 ,  G01F1/662 ,  G01K1/143 ,  G01P5/245 ,  G21C17/022 ,  G01N2291/02836

摘要： A method, apparatus, and system according to which first and second waveguides are adapted to be connected to a pipe and first and second transducers are adapted to be connected to the first and second waveguides, respectively, and to exchange ultrasonic wave signals through the first and second waveguides, the pipe, and a fluid flowing in the pipe. A temperature of the fluid flowing in the pipe exceeds 600° C. The first and second waveguides are configured to, and each have a shape to: (i) insulate the first and second transducers from the pipe, and (ii) permit propagation of the ultrasonic wave signals between the pipe and the first and second transducers, respectively, while maintaining an acoustic attenuation through the first and second waveguides at an acceptable level.

公开(公告)号：US20170358374A1

公开(公告)日：2017-12-14

申请号：US15178020

申请日：2016-06-09

申请人： GE-Hitachi Nuclear Energy Americas LLC

发明人： Eric Paul Loewen ,  Hanying Liu

IPC分类号： G21C17/022

CPC分类号： G21C17/022 ,  G01F1/68 ,  G21C17/032 ,  G21C17/10 ,  G21C17/112

摘要： A nuclear reactor includes a coolant fluid thermal monitoring array configured to monitor coolant fluid circulation in a downcomer flow channel of a nuclear reactor. The thermal monitoring array includes one or more flowmeter assemblies configured to monitor coolant fluid flow through separate flow channel portions. Each flowmeter assembly includes a first sensor coupled to a heating element and at least one second sensor at least partially insulated from the heating element. The first and second sensors may measure temperatures of separate flowstreams of coolant fluid through a downcomer flow channel portion. Temperature data generated by the first and second sensors of the flowmeter assemblies may be processed to monitor coolant fluid flow through the downcomer flow channel portions. The temperature data may be processed to monitor coolant fluid temperature. The temperature data may be processed to monitor a location of a fluid two-phase interface in the downcomer flow channel.

公开(公告)号：US09761335B2

公开(公告)日：2017-09-12

申请号：US14058324

申请日：2013-10-21

申请人： Westinghouse Electric Company LLC

发明人： Michael C. Prible ,  Andrew M. Bunker ,  Michael D. Heibel

IPC分类号： G21C17/00 ,  G21C17/022 ,  G01N23/09 ,  G21C17/108 ,  G21C17/112

CPC分类号： G21C17/022 ,  G01N23/005 ,  G01N23/09 ,  G21C17/108 ,  G21C17/112

摘要： A method for monitoring changes in the boron concentration in the coolant of a reactor during a nuclear plant outage that applies temperature compensation to the source range detector output. The method then monitors the compensated output signal to identify changes in the detector count rate above a preselected value.

公开(公告)号：US09607721B2

公开(公告)日：2017-03-28

申请号：US13869274

申请日：2013-04-24

申请人： Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C.

发明人： Yu-Hung Shih ,  Tung-Jen Wen ,  Dah-Yu Kao ,  Yu-Te Tsai

IPC分类号： G21C17/00 ,  G21C17/022 ,  G21F9/06

CPC分类号： G21C17/00 ,  G21C17/022 ,  G21F9/06

摘要： A method for separating amorphous iron oxides is provided. The method includes steps of sampling, filtering, dissolving and separating, analyzing the solution containing amorphous radioactive iron oxides and analyzing granules containing crystalline radioactive iron oxides. Characteristics of the radioactive iron oxides during various periods are acquired to solve the radiation buildup problem. Parameters for improving water quality and chemistry performance indicator are thus provided. Crystalline deposits are separated while the dissolving rate of radioactive iron oxides reaches more than 90%. The present invention does not use complex utilities, is easy to use and has a low operation cost for fast analysis.

公开(公告)号：US20160351280A1

公开(公告)日：2016-12-01

申请号：US15115676

申请日：2014-01-31

申请人： Nuccorp, Inc.

发明人： Willie Turner WOOD, JR. ,  Scott J. ECHERER

IPC分类号： G21C19/28 ,  G21C17/022 ,  G21D1/02

CPC分类号： G21C19/28 ,  F16K24/044 ,  F16K37/0016 ,  G21C17/022 ,  G21D1/02 ,  G21Y2002/50 ,  G21Y2004/30 ,  Y02E30/40

摘要： A device for isolating, accumulating, indicating and venting gas in a fluid system pipe includes a coupling affixed to a sys tem pipe. The coupling includes an isolation valve. A standpipe is attached to the coupling. The standpipe holds a float trapped between a flow retaining orifice and a closed upper end save for an angled hole therein that allows gas to flow around the float. An indicator exterior to the pipe indicates the float's level in the standpipe regardless of system pressure changes. A vent valve attached above the standpipe allows controlled ventilation of the gas flowing from the system pipe through the standpipe and through the vent valve. Accumulation of gas from the system pipe lowers the float in the standpipe, at which point the user vents the gas, causing the float to rise with the rising fluid level.

摘要翻译： 用于在流体系统管道中隔离，积聚，指示和排出气体的装置包括固定在系统管道上的联接件。 联轴器包括隔离阀。 立管连接在联轴器上。 立管保持在流动保持孔和闭合的上端之间的浮子，除了其中的倾斜孔之外，还允许气体围绕浮子流动。 管道外部的指示器表示立管中的浮子水平，无论系统压力如何变化。 连接在立管上方的排气阀允许从系统管道流过立管并通过排气阀的气体的受控通风。 系统管道中的气体积聚会降低立管中的浮子，此时用户排出气体，导致浮子随液面上升而上升。