Video flowmeter

Lord, David E; Carter, Gary W; Petrini, Richard R

Title: Video flowmeter

Full Record
Other Related Research

Abstract

A video flowmeter is described that is capable of specifying flow nature and pattern and, at the same time, the quantitative value of the rate of volumetric flow. An image of a determinable volumetric region within a fluid (10) containing entrained particles (12) is formed and positioned by a rod optic lens assembly (31) on the raster area of a low-light level television camera (20). The particles (12) are illuminated by light transmitted through a bundle of glass fibers (32) surrounding the rod optic lens assembly (31). Only particle images having speeds on the raster area below the raster line scanning speed may be used to form a video picture which is displayed on a video screen (40). The flowmeter is calibrated so that the locus of positions of origin of the video picture gives a determination of the volumetric flow rate of the fluid (10).

Inventors:

Lord, David E ^[1]; Carter, Gary W ^[1]; Petrini, Richard R ^[1]

Livermore, CA

Issue Date:: 1983-01-01

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 864646

Patent Number(s):: 4396943

Assignee:: Lord, David E. (Livermore, CA);Carter, Gary W. (Livermore, CA);Petrini, Richard R. (Livermore, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL

Show more

G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL
G01F1/704 - using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
G01F1/661 - {using light}

Show less

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: video; flowmeter; described; capable; specifying; flow; nature; pattern; time; quantitative; value; rate; volumetric; image; determinable; region; fluid; 10; containing; entrained; particles; 12; formed; positioned; rod; optic; lens; assembly; 31; raster; low-light; level; television; camera; 20; illuminated; light; transmitted; bundle; glass; fibers; 32; surrounding; particle; images; speeds; below; line; scanning; speed; form; picture; displayed; screen; 40; calibrated; locus; positions; origin; determination; glass fibers; rod optic; lens assembly; television camera; flow rate; volumetric flow; glass fiber; light transmitted; particle image; particle images; containing entrained; optic lens; entrained particles; line scan; video flowmeter; light level; /348/356/

Citation Formats


                    Lord, David E, Carter, Gary W, and Petrini, Richard R. Video flowmeter.  United States: N. p., 1983. 
        Web.

Copy to clipboard


                    Lord, David E, Carter, Gary W, & Petrini, Richard R. Video flowmeter.  United States.

Copy to clipboard


                    Lord, David E, Carter, Gary W, and Petrini, Richard R. Sat .  
        "Video flowmeter".  United States.  https://www.osti.gov/servlets/purl/864646.

Copy to clipboard


                    
@article{osti_864646,

  title        = {Video flowmeter},

  author       = {Lord, David E and Carter, Gary W and Petrini, Richard R},

  abstractNote = {A video flowmeter is described that is capable of specifying flow nature and pattern and, at the same time, the quantitative value of the rate of volumetric flow. An image of a determinable volumetric region within a fluid (10) containing entrained particles (12) is formed and positioned by a rod optic lens assembly (31) on the raster area of a low-light level television camera (20). The particles (12) are illuminated by light transmitted through a bundle of glass fibers (32) surrounding the rod optic lens assembly (31). Only particle images having speeds on the raster area below the raster line scanning speed may be used to form a video picture which is displayed on a video screen (40). The flowmeter is calibrated so that the locus of positions of origin of the video picture gives a determination of the volumetric flow rate of the fluid (10).},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1983},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Magnetic transit-time flowmeter

Patent Forster, George A [Westmont, IL]

The flow rate of a conducting fluid in a stream is determined by disposing two permanent-magnet flowmeters in the stream, one downstream of the other. Flow of the conducting fluid causes the generation of both d-c and a-c electrical signals, the a-c comprising flow noise. Measurement of the time delay between similarities in the a-c signals by cross-correlation methods provides a measure of the rate of flow of the fluid.
Full Text Available
Flowmeter for pressure-driven chromatography systems

Patent Paul, Phillip H [Livermore, CA]; Arnold, Don W [Livermore, CA]

A flowmeter for accurately measuring the flowrate of fluids in high pressure chromatography systems. The flowmeter is a porous bed of a material, the porous bed having a porosity in the range of about 0.1 to 0.6 and a pore size in the range of about 50 nm to 1 .mu.m, disposed between a high pressure pumping means and a chromatography column. The flowmeter is provided with pressure measuring means at both the inlet and outlet of the porous bed for measuring the pressure drop through the porous bed. This flowmeter system provides not only the ability to measure accuratelymore »« less
Full Text Available
Flowmeter for determining average rate of flow of liquid in a conduit

Patent Kennerly, John M [Knoxville, TN]; Lindner, Gordon M [Oak Ridge, TN]; Rowe, John C [Oak Ridge, TN]

This invention is a compact, precise, and relatively simple device for use in determining the average rate of flow of a liquid through a conduit. The liquid may be turbulent and contain bubbles of gas. In a preferred embodiment, the flowmeter includes an electrical circuit and a flow vessel which is connected as a segment of the conduit conveying the liquid. The vessel is provided with a valved outlet and is partitioned by a vertical baffle into coaxial chambers whose upper regions are vented to permit the escape of gas. The inner chamber receives turbulent downflowing liquid from the conduitmore »« less
Full Text Available
Doppler radar flowmeter

Patent Petlevich, Walter J [Uniontown, PA]; Sverdrup, Edward F [Adamsburg, PA]

A Doppler radar flowmeter comprises a transceiver which produces an audio frequency output related to the Doppler shift in frequency between radio waves backscattered from particulate matter carried in a fluid and the radiated radio waves. A variable gain amplifier and low pass filter are provided for amplifying and filtering the transceiver output. A frequency counter having a variable triggering level is also provided to determine the magnitude of the Doppler shift. A calibration method is disclosed wherein the amplifier gain and frequency counter trigger level are adjusted to achieve plateaus in the output of the frequency counter and therebymore »« less
Full Text Available
Magnetic flowmeter for electrically conductive liquid

Patent Skladzien, Stanley B [Elmhurst, IL]; Raue, Donald J [Naperville, IL]

A magnetic flowmeter includes first and second tube sections each having ls of non-magnetic material. The first tube is suitably connected to a process for passing a flow of an electrically conductive fluid to be measured. The second tube is established as a reference containing a still medium and is maintained at the same temperature as the first tube. A rotatable magnet assembly is disposed between the two tubes with at least two magnets attached to radially extending arms from a central shaft. Each magnet includes an air gap suitably sized to pass astraddle the diameter along a portion ofmore »« less
Full Text Available

Similar Records