公开(公告)号：US12062460B2

公开(公告)日：2024-08-13

申请号：US17535069

申请日：2021-11-24

申请人： GE-Hitachi Nuclear Energy Americas LLC

发明人： Eric Paul Loewen ,  Hanying Liu

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

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

摘要： The apparatus includes a flowmeter coupled a surface exposed to a flow channel. The flowmeter monitors a flow of coolant. The flowmeter includes a first temperature sensor that generates first temperature data based on measuring a first temperature of a first flowstream, a heating element coupled to the first temperature sensor where the heating element applies heat to the first temperature sensor through an interface, a second temperature sensor generates second temperature data based on measuring a second temperature of a second flowstream, the second temperature sensor being spaced apart from the heating element, and the second temperature sensor being at least partially insulated from the heating element so the second temperature data generated by the second temperature sensor is independent of heat generated by the heating element. A processor calculates a flowrate of the coolant based on the second temperature data and a temperature of the coolant fluid.

公开(公告)号：US20230223160A1

公开(公告)日：2023-07-13

申请号：US17996528

申请日：2021-04-21

申请人： SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO., LTD.

发明人： Zhan LIU ,  Di LIU ,  Haitao WANG ,  Bo YANG ,  Kemei CAO ,  Zhanfei QI

IPC分类号： G21C15/12 ,  G21C15/243 ,  G21C17/032

CPC分类号： G21C15/12 ,  G21C15/243 ,  G21C17/032

摘要： Provided is a reactor secondary side passive residual heat removal system, comprising: a containment vessel; a steam generator provided with a steam outlet and a water supply inlet; a water tank, the water tank being internally provided with a heat exchanger, the heat exchanger having a heat exchanger inlet and a heat exchanger outlet; and a steam driven pump provided with a steam port, a water inlet and a water outlet, wherein the steam generator, the water tank and the steam driven pump are arranged in the containment vessel, the heat exchanger inlet is in communication with the steam outlet of the steam generator by means of a first pipeline, the heat exchanger outlet is in communication with the water inlet of the steam driven pump by means of a second pipeline, the water outlet of the steam driven pump is in communication with the water supply inlet of the steam generator by means of a third pipeline, and the steam port of the steam driven pump is in communication with the first pipeline by means of a fourth pipeline. The present invention does not rely on an external driving force, thereby greatly reducing the failure probability of the system and improving the safety of the system.

公开(公告)号：US20230154635A1

公开(公告)日：2023-05-18

申请号：US17454920

申请日：2021-11-15

申请人： Westinghouse Electric Company LLC

发明人： Jeffrey L. ARNDT ,  Paolo FERRONI ,  Cory A. STANSBURY

IPC分类号： G21C17/032 ,  H05K9/00 ,  G01F1/58

CPC分类号： G21C17/032 ,  H05K9/0081 ,  G01F1/588

摘要： A non-invasive eddy current flow meter embedded into a coolant channel for measuring the coolant flow velocity of liquid metal coolant in a nuclear reactor. The eddy current flow meter measures the coolant flow velocity in pool-type nuclear reactors and narrow coolant channels without creating bottlenecks that impede the coolant flow within the nuclear reactors.

公开(公告)号：US09157777B2

公开(公告)日：2015-10-13

申请号：US14004571

申请日：2012-03-23

申请人： Daigo Kittaka ,  Ryoichi Sugawara ,  Noriyuki Takeshima ,  Masafumi Komai ,  Mitsuhiro Enomoto

发明人： Daigo Kittaka ,  Ryoichi Sugawara ,  Noriyuki Takeshima ,  Masafumi Komai ,  Mitsuhiro Enomoto

IPC分类号： G01F1/58 ,  G21C17/032 ,  G01F1/60

CPC分类号： G01F1/588 ,  G01F1/60 ,  G21C17/032

摘要： An electromagnetic flow meter comprises: an excitation member (5) in which a plurality of magnets (5a, 5b, 5c) are arranged spaced apart from one another along an outer circumferential surface of a flow channel (1) through which liquid metal flows, and in which a magnetic field is formed in a direction perpendicular to the outer circumferential surface of the flow channel (1); and electrodes (6a, 6b) provided between the magnets (5a, 5b, 5c) of the excitation member (5), for measuring the voltage generated when the liquid metal crosses the magnetic field. A pulse excitation electric-current supply device (7a) for supplying a pulsed excitation current to the excitation member (5) is provided, whereby a flow speed distribution can be suppressed from being generated in the circumferential direction of the channel (1) even when the flow speed of the liquid metal is low, and the flow rate can be accurately measured.

摘要翻译： 电磁流量计包括：激励构件（5），其中多个磁体（5a，5b，5c）沿着流动通道（1）的外周表面彼此间隔开，液态金属流过该激励构件， 并且在垂直于所述流动通道（1）的外周表面的方向上形成磁场; 以及设置在激励构件（5）的磁体（5a，5b，5c）之间的用于测量当液体金属穿过磁场时产生的电压的电极（6a，6b）。 提供了一种用于向激励部件（5）提供脉冲激励电流的脉冲激励电流供给装置（7a），由此即使当通道（1）的周向方向上也可以抑制流速分布， 液体金属的流动速度低，可以精确地测量流量。

公开(公告)号：US20150063519A1

公开(公告)日：2015-03-05

申请号：US14012231

申请日：2013-08-28

申请人： UT-Battelle, LLC

发明人： David E. Holcomb

IPC分类号： G21C17/032

CPC分类号： G21C17/032

摘要： This invention relates to the field of coolant flow in a fluoride salt cooled high temperature reactor. In particular, the invention relates to the discovery of use of nitrogen-16 and/or fluoride-20 decay signature to measure coolant flow. The method of the invention comprises detecting gamma radiation emanating from nitrogen-16 activity and/or fluorine-20 activity within the reactor coolant at a first position along the reactor coolant loop; detecting the gamma radiation emanating from the nitrogen-16 activity and/or fluorine-20 activity within the reactor coolant at a second position along the reactor coolant loop downstream of said first position. The gamma radiation detected from the first position and second position are then cross-correlated, thereby determining the transit time of corresponding gamma activity perturbations viewed at the two detector locations.

摘要翻译： 本发明涉及氟化盐冷却的高温反应器中的冷却剂流动领域。 特别地，本发明涉及发现使用氮-16和/或氟化物-20衰减特征来测量冷却剂流。 本发明的方法包括在沿反应堆冷却剂回路的第一位置检测反应堆冷却剂内的氮-16活性和/或氟-20活性发出的γ辐射; 在沿着所述第一位置下游的反应堆冷却剂回路的第二位置处检测在反应堆冷却剂内从氮-16活性和/或氟-20活性发出的γ辐射。 然后从第一位置和第二位置检测到的伽马辐射是交叉相关的，从而确定在两个检测器位置处观察到的相应伽马活动扰动的渡越时间。

公开(公告)号：US08397760B2

公开(公告)日：2013-03-19

申请号：US12924914

申请日：2010-10-06

申请人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Jon D. McWhirter ,  Ashok Odedra ,  Joshua C. Walter ,  Kevan D. Weaver ,  Lowell L. Wood, Jr.

发明人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Jon D. McWhirter ,  Ashok Odedra ,  Joshua C. Walter ,  Kevan D. Weaver ,  Lowell L. Wood, Jr.

IPC分类号： F15B21/06

CPC分类号： G05D7/0635 ,  G21C1/026 ,  G21C15/247 ,  G21C17/032 ,  G21C17/10 ,  H02K44/02 ,  Y02E30/34 ,  Y10T137/2082 ,  Y10T137/2191 ,  Y10T137/2224 ,  Y10T137/86718 ,  Y10T137/87507

摘要： Disclosed embodiments include electromagnetic flow regulators for regulating flow of an electrically conductive fluid, systems for regulating flow of an electrically conductive fluid, methods of regulating flow of an electrically conductive fluid, nuclear fission reactors, systems for regulating flow of an electrically conductive reactor coolant, and methods of regulating flow of an electrically conductive reactor coolant in a nuclear fission reactor.

公开(公告)号：US06480793B1

公开(公告)日：2002-11-12

申请号：US09697725

申请日：2000-10-27

申请人： Clifford B. Martin

发明人： Clifford B. Martin

IPC分类号： G01F100

CPC分类号： G01F1/704 ,  G01N2291/02836 ,  G21C17/032

摘要： A system and method of detecting and monitoring flow conditions in the coolant of a nuclear reactor that relies upon acoustic or optical differences in the various flow conditions. The system uses a database of acoustic or optical characteristics of the various known flow conditions being monitored, and a processor that compares the detected acoustic signals with the known acoustic characteristics. The processor uses various methods of discrimination, such as altering or decaying the transmitted signal, to aid in the interpretation and comparison of the signals. The acoustic detection is provided by a pair of sensor assemblies positioned a distance from each other to detect variations in the acoustic patterns associated with the coolant flow. A transmitter and receiver of each sensor assembly can be positioned on opposite sides of the pipe in which the coolant is flowing, or on the same side of the pipe, depending upon which configuration provides the best discrimination between the flow conditions being monitored. The monitoring system is effective for determining, among other things, the existence of bubbles entrained in the coolant, the existence and level of a free surface, the existence of vortex or whirlpool formations, and the existence of entrained solid particulates.

摘要翻译： 检测和监测依赖于各种流动条件下的声学或光学差异的核反应堆冷却剂中的流动状况的系统和方法。 该系统使用正在监测的各种已知流量条件的声学或光学特性的数据库，以及将检测到的声学信号与已知的声学特性进行比较的处理器。 处理器使用各种鉴别方法，例如改变或衰减发送的信号，以帮助信号的解释和比较。 声学检测由彼此间隔一定距离的一对传感器组件提供，以检测与冷却剂流相关联的声学图形的变化。 每个传感器组件的发射器和接收器可以位于冷却剂流动的管道的相对侧上，或者位于管道的同一侧上，这取决于哪个配置提供被监测的流动条件之间的最佳区分。 监测系统有效地确定冷却剂中携带的气泡的存在，自由表面的存在和水平，涡旋或漩涡形成的存在以及夹带的固体颗粒的存在。

公开(公告)号：US5396524A

公开(公告)日：1995-03-07

申请号：US182317

申请日：1994-01-14

申请人： Walter G. Lyman

发明人： Walter G. Lyman

IPC分类号： G01F1/46 ,  G01F1/34 ,  G01P5/16 ,  G01P5/165 ,  G21C17/032 ,  G21C17/00

CPC分类号： G21C17/032 ,  G21Y2002/304

摘要： A flow measurement probe measures reactor coolant water flow in a cold leg pipe of a nuclear reactor system wherein a lack of elbows precludes the use of elbow tap flow measurements. An elongated probe body disposed in the pipe includes a common dynamic pressure tap in the peripheral wall of the probe body facing about into the direction of coolant water flow. A plurality of static pressure taps are oriented about normal to the direction of coolant water flow. Each of the static pressure taps is operatively connected witch one input of a different differential pressure transmitter. The other input of each of the transmitters is operatively connected with the common dynamic pressure tap. The differential pressure measured by each transmitter is proportional to the square of the magnitude of reactor coolant water flow. The multiple taps in the probe allow multiple redundant flow measurements to be made with a single device, thus avoiding the need for multiple penetrations in the pipe.

摘要翻译： 流量测量探头测量核反应堆系统的冷腿管中的反应堆冷却水流量，其中缺乏弯头排除了使用弯管抽头流量测量。 设置在管中的细长的探针主体包括在探针主体的周壁中面向大致朝向冷却水流动方向的公共动压抽头。 多个静压抽头大致垂直于冷却水流动的方向。 每个静压分接头与不同差压变送器的一个输入端可操作地连接。 每个发射器的另一个输入端与公共动压抽头可操作地连接。 每个变送器测量的压差与反应堆冷却水流量的平方成正比。 探头中的多个水龙头允许使用单个设备进行多个冗余流量测量，从而避免了管道中多次穿透的需要。

公开(公告)号：US5265478A

公开(公告)日：1993-11-30

申请号：US664717

申请日：1991-03-05

申请人： Mark D. McKay ,  Chad E. Sweeney ,  B. Samuel Spangler, Jr.

发明人： Mark D. McKay ,  Chad E. Sweeney ,  B. Samuel Spangler, Jr.

IPC分类号： G01F1/44 ,  G21C17/032 ,  G21C17/112

CPC分类号： G21C17/032 ,  G01F1/44 ,  G21C17/112 ,  G21Y2002/204 ,  G21Y2002/301 ,  G21Y2004/30

摘要： A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

摘要翻译： 一种流量计和温度测量装置，其包括管体，其中心在其中用于限制流动的管体和在管的上端处的套筒，以承载在套筒中纵向形成的多个通道到适当的轴向位置，其中它们穿透管以允许压力 用热电偶进行测量和温度测量。 使用穿过管远离身体的通道进行高压测量，并且在身体最宽部分的位置进行低压测量。 端塞密封装置的端部，并且其上端的孔允许流体从管的内部进入通风室。 通道是通过在套管中切割凹槽制成的，凹槽在套筒的表面加宽，然后将一条套筒材料焊接到封闭通道的凹槽上。 优选地，在切割凹槽并焊接条之前，套筒装有粉状石墨。

公开(公告)号：US20240296966A1

公开(公告)日：2024-09-05

申请号：US18444473

申请日：2024-02-16

申请人： Fred Donald Lang

发明人： Fred Donald Lang

IPC分类号： G21C17/032 ,  G21C7/32 ,  G21C17/022

CPC分类号： G21C17/032 ,  G21C7/32 ,  G21C17/022

摘要： This invention relates to the monitoring and diagnosing of nuclear power plants for its thermal performance using the NCV Method. Its applicability comprises any nuclear reactor such as used for research producing a useful output. Its greatest applicability lies with conventional Pressurized Water Reactor and Boiling Water Reactor nuclear plants generating an electric power. Its teachings of treating fission as an inertial process, a phenomena which is self-contained following incident neutron capture, allows the determination of an absolute neutron flux. This process is best treated by Second Law principles producing a total fission exergy. This invention also applies to the design of fusion thermal systems regards the determination of its Second Law viability and absolute plasma flux.