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    Optical bubble sensor
    1.
    发明授权
    Optical bubble sensor 有权

    公开(公告)号：US12130162B2

    公开(公告)日：2024-10-29

    申请号：US17861507

    申请日：2022-07-11

    Applicant: Strain Measurement Devices, Inc.

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

    IPC: G01F1/74 ,  G01F1/7086

    CPC classification number: G01F1/74 ,  G01F1/7086

    Abstract: 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.

    METHOD AND DEVICE FOR MEASURING A FLOW VELOCITY OF A GAS STREAM
    2.
    发明公开
    METHOD AND DEVICE FOR MEASURING A FLOW VELOCITY OF A GAS STREAM 审中-公开

    公开(公告)号：US20240255333A1

    公开(公告)日：2024-08-01

    申请号：US18436714

    申请日：2024-02-08

    Applicant: PROMECON PROCESS MEASUREMENT CONTROL GMBH

    Inventor： Hans-Georg CONRADS

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

    CPC classification number: G01F1/7086 ,  G01F1/7044 ,  G01F1/712

    Abstract: 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.

    Optical fluid detection sensor for detecting flow of immiscible slug flow in a fluid detection device
    4.
    发明授权
    Optical fluid detection sensor for detecting flow of immiscible slug flow in a fluid detection device 有权

    公开(公告)号：US11920967B2

    公开(公告)日：2024-03-05

    申请号：US17293992

    申请日：2019-11-14

    Applicant: KYOCERA Corporation

    Inventor： Katsumi Tsuchida ,  Hiroyuki Okushiba ,  Tetsuya Matsushita

    IPC: G01F1/7086 ,  G02B5/30

    CPC classification number: G01F1/7086 ,  G02B5/30

    Abstract: 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.

    PHASE FRACTION MEASUREMENT USING LIGHT SOURCE ADJUSTED IN DISCRETE STEPS
    8.
    发明申请
    PHASE FRACTION MEASUREMENT USING LIGHT SOURCE ADJUSTED IN DISCRETE STEPS 有权

    公开(公告)号：US20170370896A1

    公开(公告)日：2017-12-28

    申请号：US15194853

    申请日：2016-06-28

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Arifin Arifin ,  Cheng-Gang Xie

    IPC: G01N33/28 ,  G01N21/31 ,  G01F1/74

    CPC classification number: G01N33/2823 ,  G01F1/7086 ,  G01F1/74 ,  G01N21/314 ,  G01N21/359 ,  G01N21/532 ,  G01N2201/0694 ,  G01N2201/1241

    Abstract: Disclosed herein is an apparatus including a structure containing a multiphase fluid and having a transparent window. A collimated light source emits light through the transparent window structure at a wavelength at which a component of a desired phase of the multiphase fluid is absorptive. A photodetector is positioned such that the emitted light passes through the multiphase fluid in the structure and out through the transparent window structure to impinge upon the photodetector. The photodetector has an actual dynamic range for light detection. Processing circuitry adjusts a power of the collimated light source in a series of steps dependent upon a relationship between an output level of the photodetector and a threshold to cause measurement of the emitted light over an effective dynamic range greater than the actual dynamic range. Properties of the multiphase fluid are determined as a function of the measured emitted light.

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