Fluid flow measurement system for pipes
AssigneeWestinghouse Electric Corp.
InventorJohn S. Wyler
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Abstract
A plurality of transducers are positioned in the walls of a pipe conveying a fluid, the volumetric flow rate of which is to be measured. Opposed upstream and downstream transducers project acoustic energy toward one another through the fluid, along a plurality of parallel paths. Electronic circuitry coupled to the transducers provides an indication of the fluid velocity component along these paths and the values are modified by predetermined weighting factors. The transducers are placed in the pipe such that the acoustic paths are positioned at certain distances with respect to a reference.
Claims5
Flowmeter apparatus for measuring volumetric flow rate in a pipe of radius R, comprising:
- a. means for obtaining measurements indicative of average fluid velocity along n paths in said pipe;
- b. means for modifying said measurements including the application of weighting factors w.sub.i ;
- c. means for summing said modified measurements;
- d. each said path being positioned such that the projection of the path onto a reference plane perpendicular to fluid flow in said pipe is located at a distance of Rx.sub.i from the center of said pipe;
- e. where:
- i is a particular path number, ##EQU25##
Dependencies are inferred from the claim text.