公开(公告)号：US12130162B2

公开(公告)日：2024-10-29

申请号：US17861507

申请日：2022-07-11

申请人： Strain Measurement Devices, Inc.

发明人： Kristin N. Rheault ,  Samuel A. Matus ,  Frederick E. Jackson

IPC分类号： G01F1/74 ,  G01F1/7086

CPC分类号： G01F1/74 ,  G01F1/7086

摘要： An optical sensor includes: a sensor portion, having a transmitter and at least one receiver, configured to couple to a wettable component having a fluid flow channel, wherein the transmitter is disposed to emit a light that travels from the sensor portion to the wettable component where a majority of the light is directed towards the fluid flow channel at an angle between a first critical angle and a second critical angle; wherein with liquid filling the fluid flow channel, the majority of the light refracts at a liquid interface and travels through the entirety of the fluid flow channel; wherein with gas in the fluid flow channel, the majority of the light reflects at a gas interface and does not travel through the entirety of the fluid flow channel; wherein the amount of the light refracted and/or reflected and received by the at least one receiver, is used to determine if there is liquid or gas in the fluid flow channel.

公开(公告)号：US20240255333A1

公开(公告)日：2024-08-01

申请号：US18436714

申请日：2024-02-08

申请人： PROMECON PROCESS MEASUREMENT CONTROL GMBH

发明人： Hans-Georg CONRADS

IPC分类号： G01F1/7086 ,  G01F1/704 ,  G01F1/712

CPC分类号： G01F1/7086 ,  G01F1/7044 ,  G01F1/712

摘要： The invention relates to a method for measuring a flow velocity (v) of a gas stream (14) featuring the steps: (a) time-resolved measurement of an IR radiation parameter (E) of IR radiation of the gas stream (14) at a first measurement point (P1) outside of the gas stream (14), thereby obtaining a first IR radiation parameter curve (Eg1,1(t)), (b) time-resolved measurement of an IR radiation parameter (E) at a second measurement point (P2) outside of the gas stream (14), thereby obtaining a second IR radiation parameter curve (Eg1,2(t)), (c) calculation of a transit time (τ1) from the first IR radiation parameter curve (Eg1,1(t)) and the second IR radiation parameter curve (Eg1,2(t)), in particular by means of cross-correlation, and (d) calculation of the flow velocity (vG) from the transit time (τ1), (e) wherein the IR radiation parameter (Eg1) is measured photoelectrically at a wavelength (g1) of at least 780 nm, and (f) a measurement frequency (f) is at least 1 kilohertz.

公开(公告)号：US20240125636A1

公开(公告)日：2024-04-18

申请号：US18546420

申请日：2022-03-25

申请人： CALIFORNIA INSTITUTE OF TECHNOLOGY

发明人： Mathieu FRADET ,  Luis Phillipe C.F. TOSI ,  Mina RAIS-ZADEH ,  Kristopher V SHERRILL ,  Darius MODARRESS ,  Pavel SVITEK ,  Katayoon MODARRESS RUBY

IPC分类号： G01F1/7086 ,  E21B47/01 ,  E21B47/113 ,  G01F1/74

CPC分类号： G01F1/7086 ,  E21B47/01 ,  E21B47/114 ,  G01F1/74

摘要： Systems and methods for measuring flow velocity of a fluid mixture in a lateral section of an oil/gas/water well with a dual beam laser doppler velocimetry (LVD) based flow sensor are presented. According to one aspect, the flow velocity is measured by tracking movement of particles and/or features in the fluid mixture while traversing an interference pattern generated by the intersection of two separate coherent beams that are perpendicular to a direction of the flow. Flow velocity is derived based on a time it takes the particles to traverse consecutive fringes of the interference pattern as indicated by intensity peaks detected at the photodetector. The LDV-based flow sensor may be rotatable to measure flow velocities at different angular positions of a pipe in a lateral section of an oil well, rotation provided by rotation of an element of a mobile vessel to which the flow sensor is rigidly coupled.

公开(公告)号：US11920967B2

公开(公告)日：2024-03-05

申请号：US17293992

申请日：2019-11-14

申请人： KYOCERA Corporation

发明人： Katsumi Tsuchida ,  Hiroyuki Okushiba ,  Tetsuya Matsushita

IPC分类号： G01F1/7086 ,  G02B5/30

CPC分类号： G01F1/7086 ,  G02B5/30

摘要： A fluid detection sensor includes: an optical sensor including a light emitting element array and a light receiving element array which are arranged on a substrate along a longitudinal direction thereof; a flow path member which includes a tubular body which is transparent and is arranged along the longitudinal direction facing the optical sensor, an inside of the tubular body constituting a flow path through which a plurality of substantially immiscible fluids flow as a slug flow; and a reflecting member placed on a side opposite to the optical sensor with respect to the flow path. The fluid detection sensor detects changes in light which occur in accordance with a movement of the plurality of fluids by the light receiving element array receiving light which is emitted by the light emitting element array toward the slug flow in the flow path and is reflected by the reflecting member.

公开(公告)号：US11680957B2

公开(公告)日：2023-06-20

申请号：US16772390

申请日：2018-02-12

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Alexander N. Govyadinov ,  Pavel Kornilovich ,  Diane R. Hammerstad

IPC分类号： G05D7/06 ,  G01P5/20 ,  B01L3/00 ,  G01F1/7082 ,  G01F1/7084 ,  G01F1/7086

CPC分类号： G01P5/20 ,  B01L3/502715 ,  G01F1/7082 ,  G05D7/0676 ,  B01L2300/0627 ,  G01F1/7084 ,  G01F1/7086

摘要： A microfluidic flow sensor may include a substrate having a microfluidic channel, an inert particle source to supply a fluid carrying an inert particle to the microfluidic channel and a sensor element along the microfluidic channel and spaced from the inert particle source. The sensor element outputs a signal based upon a sensed passage of the inert particle with respect to the sensor element. Portions of the microfluidic channel proximate the sensor element have a first size and wherein the inert particle provided by the inert particle source is to have a second size greater than one half the first size.

公开(公告)号：US20220396918A1

公开(公告)日：2022-12-15

申请号：US17623236

申请日：2020-06-25

申请人： ANDRITZ OY

发明人： Heikki LAPPALAINEN

IPC分类号： D21C11/12 ,  F23G7/04 ,  F27D21/00 ,  G01F1/002 ,  G01F1/7086 ,  G01F1/86

摘要： A system for automatic monitoring of smelt flow exiting a recovery boiler based on optical information. A processor is used to read at least one stationarily imaged video sequence, comprising digital image frames, including an area under examination representing at least part of the smelt flow exiting the recovery boiler. The processor is used to identify, in the area under examination, an area distinguishable based on colour and/or intensity information. The processor is used to determine, based on the identified distinguishable area, a monitored flow property of the smelt flow.

公开(公告)号：US11492897B2

公开(公告)日：2022-11-08

申请号：US16483359

申请日：2017-02-03

申请人： RESMAN AS

发明人： Anton Kulyakhtin ,  Christian Andresen ,  Thomas Sperle

IPC分类号： E21B47/11 ,  E21B43/14 ,  G01F1/7086 ,  G01F1/74 ,  G01N21/64

摘要： A method, a system, tools for use by the system, and an interpretation method for injecting and detecting tracers and conducting flow characterizing of a petroleum well are disclosed. The method describes monitoring of travel time and slip velocity between two/three different phases (oil/water and possibly gas) in the well. The travel time and slip velocity are determined using an injection too for injection of an over pressurized injection of the partitioning tracers each of which would follow certain phase. The tracers are detected by an optical detection probe in the pipe. The slip velocity is obtained from the difference of travel time of two tracers which partition to two different phases.

公开(公告)号：US20220163361A1

公开(公告)日：2022-05-26

申请号：US17602384

申请日：2020-04-09

申请人： CiTEX Holding GmbH

发明人： Marius THIEL

IPC分类号： G01F1/7086 ,  G01F1/712 ,  G01F1/74 ,  G01N21/85

摘要： The invention relates to a method for detecting a material flow (10), comprising the following steps: generating a transmitted THz beam (3) by means of a THz sensor (2), guiding the transmitted THz beam (3, 3-1, 3-2) through a material flow (10) along at least one first optical axis (A1), reflecting the transmitted THz beam (3, 3-1, 3-2) which has passed through the material flow (10) by means of at least one reflector mirror (8, 9) detecting the reflected THz reflection beam (4) and generating a signal amplitude (Sa), determining a reflector peak in the signal amplitude (Sa) corresponding to the reflector mirror, evaluating (analyzing) the determined reflector peak in an evaluating step and determining material properties of the material flow (10) depending on the evaluating step. Hereby, in particular, it is possible to first carry out a calibration measurement of a guiding device without any material flow (10), while storing the signal amplitude and/or a determined reflector peak of the signal amplitude, and subsequently guiding the material flow (10) through the guiding device (5) and acquiring the signal amplitude, so as to determine differences of the signal amplitude of the calibration measurement and the subsequent measurement with the material flow (10).

公开(公告)号：US11280652B2

公开(公告)日：2022-03-22

申请号：US16466696

申请日：2017-12-05

申请人： NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

发明人： Haruhisa Kato ,  Yusuke Matsuura ,  Ayako Nakamura

IPC分类号： G01F1/708 ,  G01F1/7086 ,  G01N15/02 ,  G01N15/00

摘要： A measuring method enabling simple and accurate measurement of a flow velocity distribution in a flow field inside a flow passage of an optical cell and a particle size-measuring method using the measuring method are provided. Providing a tracer particle of a smaller size than wavelength λ of laser light into the flow passage and capturing a bright spot attributed to light scattering from tracer particles by camera, and obtaining the flow velocity distribution by the analysis unit by obtaining an amount of movement of each tracer particle from movement of the bright spot and correcting a Brownian motion component from a correlation between an average value of variations of the amount of movement and Brownian motion are performed.

公开(公告)号：US11263746B2

公开(公告)日：2022-03-01

申请号：US16827557

申请日：2020-03-23

申请人： Alverix, Inc.

发明人： Scott Dylewski

IPC分类号： G06T7/00 ,  G01F1/708 ,  G01N21/84 ,  G01N21/78 ,  G01F1/7086

摘要： The present disclosure relates to methods for determining a liquid front position of a liquid on a surface of an assay test strip placing a liquid on the surface of the test strip; and acquiring one or more signals from the surface of the test strip at one or more times, comparing the one or more acquired signals to a threshold, wherein the liquid front position is a position on the surface of the test strip where a signal is greater than or less than a threshold (e.g., fixed or dynamic threshold). Such methods may be used to determine the liquid front velocity of a liquid on a surface of an assay test strip and the transit time of a liquid sample to traverse the one or more positions on the surface of the assay test strip.