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US 4,393,451 AGranted
Method and apparatus for measuring total liquid volume flow
AssigneeEastman Kodak Company
InventorLeland W. Barker
Life of this patent
Estimating the term…
Abstract
Method for measuring total liquid volume flow in partially full cylindrical pipes, and apparatus for practicing the method.
Claims8
The method of determining total volume flow of a liquid in a partially full cylindrical pipe, the method comprising
- measuring at a predetermined location along the length of said cylindrical pipe the average fluid velocity of the liquid flowing through said cylindrical pipe by making measurements at intervals transversely across the flow of liquid in the cylindrical pipe and determining therefrom said average fluid velocity and generating an electrical output signal representative of this measurement;
- measuring the depth of liquid at said predetermined location in said cylindrical pipe and generating an electrical signal representative of this measurement;
- and
- feeding the electrical output signals from said average fluid velocity and from said depth of liquid measurements to a programmable digital microcomputer and thereby calculating the total volume flow of said liquid by solving the following equation:
- ##EQU21## wherein the terms are defined as dp=proportional to the average velocity of flowing fluid
- R=radius of pipe
- D=depth of the liquid.
4 more elements
Apparatus for determining total volume flow of a liquid in a partially full cylindrical pipe, said apparatus comprising
- a first means positioned at a predetermined location within a cylindrical pipe for measuring the average fluid velocity of liquid flowing through said cylindrical pipe by making measurements at intervals transversely across the flow of liquid in the cylindrical pipe and determining therefrom said average fluid velocity and for generating a first electrical output signal representative of this measurement;
- a second means at said predetermined location for measuring the depth of liquid at said predetermined location and for generating a second electrical signal representative of this measurement;
- a programmable computer means;
- means for feeding said first and second electrical output signals to said programmable computer means;
- said programmable computer means being programmed to receive said first and second electrical output signals and to calculate and give the total volume flow of said liquid in accordance with the following equation:
- ##EQU22## wherein the terms are defined as dp=proportional to the average velocity of flowing fluid
- R=radius of pipe
- D=depth of the liquid.
5 more elements
Dependencies are inferred from the claim text.