公开(公告)号：US5265478A

公开(公告)日：1993-11-30

申请号：US664717

申请日：1991-03-05

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

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

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

CPC classification number: G21C17/032 ,  G01F1/44 ,  G21C17/112 ,  G21Y2002/204 ,  G21Y2002/301 ,  G21Y2004/30

Abstract: 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.

Abstract translation: 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：US4780834A

公开(公告)日：1988-10-25

申请号：US850264

申请日：1986-04-10

Applicant: Bernhard Craemer ,  Ralf Wehrlein ,  Josef Lambrecht

Inventor： Bernhard Craemer ,  Ralf Wehrlein ,  Josef Lambrecht

IPC: G21C17/032 ,  G01F1/34 ,  G01F1/76 ,  G01F1/86

CPC classification number: G01F1/76

Abstract: An apparatus for measuring and indicating mass throughput of a fluid moved in a channel by a processing machine includes first to fourth measurement value pickups, first to third divider stages, first to fourth resistances, first to fifth multiplier stages, an adder for forming a difference ##EQU1## between an output signal of the first divider stage which is weighted with the first resistance, a memory of characteristics of the processing machine which has stored therein an appertaining volume number as a function of a magnitude of an output of the second divider stage and of the fourth measurement value pickup, and a measurement value indicator for indicating an output of the third divider stage weighted by the fourth resistance which is the mass throughput ##EQU2##

Abstract translation: 一种用于测量和指示由处理机在通道中移动的流体的质量通过量的装置包括第一至第四测量值拾取，第一至第三除法器级，第一至第四电阻，第一至第五乘法器级，用于形成差分的加法器 在由第一电阻加权的第一分频器级的输出信号之间的图像存储器，其中存储有作为第二分频器级的输出的幅度的函数的存储体积数的处理机器的特性的存储器 和第四测量值拾取的测量值指示器，以及用于指示由第四电阻加权的第三除法器级的输出的测量值指示符，其是质量吞吐量

公开(公告)号：US4380924A

公开(公告)日：1983-04-26

申请号：US254664

申请日：1981-04-16

Applicant: Koichiro Nakamoto ,  Kiyokazu Ishii ,  Nobumi Ohyama

Inventor： Koichiro Nakamoto ,  Kiyokazu Ishii ,  Nobumi Ohyama

IPC: G01F1/708 ,  G01F1/00 ,  G01F1/56 ,  G01F1/58 ,  G01F1/712 ,  G01F1/74 ,  G01P5/08 ,  G01P5/18 ,  G21C17/032 ,  G01N27/74

CPC classification number: G01P5/08 ,  G01F1/56 ,  G01F1/712 ,  G01F1/74 ,  G01P5/083 ,  G01P5/18

Abstract: A method for monitoring flow condition of a liquid metal which employs a detector consisting of an excitation coil applied with an a.c. current and at least two detection coils disposed on both sides of said excitation coil. The detector is disposed in the flowing direction of the liquid metal and a peak point of the cross-correlation function of fluctuation signals occurring in said detection coils is examined. By detecting the moving direction, the polarity and the magnitude of the peak point, the flow condition can be comprehensively ascertained, such as a change in flow velocity, a change in void fraction, the presence of voids and transit velocity of void.

Abstract translation: 一种用于监测液态金属的流动状态的方法，该方法采用由施加有交流电的励磁线圈组成的检测器。 电流和至少两个设置在所述励磁线圈两侧的检测线圈。 检测器沿着液态金属的流动方向设置，并且检查在所述检测线圈中发生的波动信号的互相关函数的峰值点。 通过检测移动方向，峰值的极性和大小，可以综合确定流速的变化，空隙率的变化，空隙的存在和空隙的转移速度等的流动状态。

公开(公告)号：US20240296966A1

公开(公告)日：2024-09-05

申请号：US18444473

申请日：2024-02-16

Applicant: Fred Donald Lang

Inventor： Fred Donald Lang

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

CPC classification number: G21C17/032 ,  G21C7/32 ,  G21C17/022

Abstract: 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.

公开(公告)号：US20220223305A1

公开(公告)日：2022-07-14

申请号：US17225467

申请日：2021-04-08

Applicant: Xi'an Jiaotong University

Inventor： Kui Zhang ,  Zhixian Lai ,  Mingjun Wang ,  Chong Chen ,  Zhiming Zhu ,  Jing Zhang ,  Wenxi Tian ,  Suizheng Qiu ,  Guanghui Su

IPC: G21C17/032 ,  G01K7/02 ,  G01K1/14 ,  G21C17/038 ,  H04N5/232 ,  H04N13/239

Abstract: The present disclosure relates to a narrow slit channel visualization experimental device and method under a six-degree-of-freedom motion condition. The system comprises a six-degree-of-freedom motion simulation platform, a main circulation loop, a cooling water system, an electric heating system and a bubble monitoring system, wherein the main circulation loop is composed of an S-shaped preheater, a three-surface visualization experimental section, a double-pipe condenser, a pressurizing circulating pump, a voltage stabilizer and related equipment, wherein the cooling water system is composed of the double-pipe condenser, a plate heat exchanger, a cooling tower, a cooling fan, a cooling water tank and related equipment, wherein the electric heating system is composed of a direct-current power supply, a low-voltage power controller and a transformer, and wherein the bubble monitoring system is composed of two high-speed cameras, a PIV measuring system and an electric servo module.

公开(公告)号：US11289221B2

公开(公告)日：2022-03-29

申请号：US16561472

申请日：2019-09-05

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： Michael D. Heibel

IPC: G21C17/032 ,  G01F1/712 ,  G21C17/10 ,  G21C17/112 ,  G01F1/86

Abstract: A detection apparatus is a flow and temperature measuring device in the form of a tube having a channel positioned parallel to a coolant flow stream and contains a drogue that is firmly attached to a mount within the channel. The mount has a load detection apparatus firmly imbedded near the flow inlet to the tube. The drogue has at least neutral buoyancy in the fluid at the minimum fluid temperature of interest. A change in the buoyancy of the drogue as a function of temperature and a corresponding change in the strain detection apparatus output in the fluid is determined by a combination of simple physics and calibration measurements. The relationship between changes in strain detection apparatus signal output and flow-rate-induced forces applied to the drogue surface are also determined using a combination of simple physics and calibration measurements. A system and method are also described.

公开(公告)号：US20220084702A1

公开(公告)日：2022-03-17

申请号：US17535069

申请日：2021-11-24

Applicant: GE-Hitachi Nuclear Energy Americas LLC

Inventor： Eric Paul LOEWEN ,  Hanying LIU

IPC: G21C17/022 ,  G21C17/10 ,  G01F1/68 ,  G21C17/032

Abstract: 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：US20210074440A1

公开(公告)日：2021-03-11

申请号：US16561472

申请日：2019-09-05

Applicant: WESTINGHOUSE ELECTRIC COMPANY LLC

Inventor： MICHAEL D. HEIBEL

IPC: G21C17/032 ,  G01F1/712 ,  G21C17/10

Abstract: A detection apparatus is a flow and temperature measuring device in the form of a tube having a channel positioned parallel to a coolant flow stream and contains a drogue that is firmly attached to a mount within the channel. The mount has a load detection apparatus firmly imbedded near the flow inlet to the tube. The drogue has at least neutral buoyancy in the fluid at the minimum fluid temperature of interest. A change in the buoyancy of the drogue as a function of temperature and a corresponding change in the strain detection apparatus output in the fluid is determined by a combination of simple physics and calibration measurements. The relationship between changes in strain detection apparatus signal output and flow-rate-induced forces applied to the drogue surface are also determined using a combination of simple physics and calibration measurements. A system and method are also described.

公开(公告)号：US20180252561A1

公开(公告)日：2018-09-06

申请号：US15899251

申请日：2018-02-19

Applicant: NuScale Power, LLC

Inventor： Cristhian GALVEZ

IPC: G01F1/66 ,  G21C17/032

CPC classification number: G01F1/66 ,  G01F1/667 ,  G21C17/032

Abstract: A system for measuring flow rate within a volume includes one or more transmission devices that transmit one or more signals through fluid contained within the volume. The volume may be bounded, at least in part, by an outer structure and by an object at least partially contained within the outer structure. A transmission device located at a first location of the outer structure transmits a first signal to a second location of the outer structure. A second signal is transmitted through the fluid from the second location to a third location of the outer structure. The flow rate of the fluid within the volume may be determined based, at least in part, on the time of flight of both the first signal and the second signal.

公开(公告)号：US5615239A

公开(公告)日：1997-03-25

申请号：US560100

申请日：1995-11-17

Applicant: Gerald A. Deaver ,  James W. Pyron ,  Anh N. Nguyen

Inventor： Gerald A. Deaver ,  James W. Pyron ,  Anh N. Nguyen

IPC: G21C9/033 ,  G21C7/22 ,  G21C17/02 ,  G21C17/032 ,  G21D1/00 ,  G21C17/00

CPC classification number: G21C17/032 ,  G21Y2002/204 ,  G21Y2004/30

Abstract: A core differential pressure and liquid control line apparatus for a nuclear reactor is described. The apparatus includes a first portion configured to be positioned within and extend through an opening in the pressure vessel wall. At least the first tube portion has a diameter less than the diameter of the opening in the pressure vessel wall. An annulus is formed between the exterior surface of the first tube portion and the pressure vessel wall so that a neutron absorbent can be injected into the pressure vessel at the location of the annulus. The apparatus further includes a second L-shaped tube portion configured to be coupled to the first tube portion, and a third tube portion configured to be coupled to the second tube portion. The open end of the third tube portion extends to an elevation above the core plate.

Abstract translation: 描述了用于核反应堆的核心差压和液体控制线装置。 该装置包括构造成定位在压力容器壁内的开口中并延伸穿过压力容器壁中的开口的第一部分。 至少第一管部分的直径小于压力容器壁中开口的直径。 在第一管部分的外表面和压力容器壁之间形成环形空间，使得中空吸收剂能够在环形空间的位置处注入压力容器中。 该装置还包括被配置为联接到第一管部分的第二L形管部分和被配置为联接到第二管部分的第三管部分。 第三管部分的开口端延伸到芯板上方的高度。