Apparatus for measuring liquid flow

Details Apparatus for measuring liquid flow Apparatus for measuring liquid flow

1980-06-04

1982-04-20

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 166

Patent

active

043252621

ABSTRACT:
An apparatus for ultrasonically determining fluid flow passing through a measurement section includes a tube which has two ends and an average predetermined inner cross-sectional area; the tube constitutes the measurement section. A sound-emitting transducer is disposed near one end of the tube, which has a first sound-transfer surface, and a sound-receiving transducer disposed near the other end of the tube, which has a second sound transfer surface. Each sound transfer surface is disposed at a sufficiently large predetermined distance from a corresponding end of the tube, so as to permit the fluid flowing through the tube. A fluid-receiving chamber communicates with the one end of the tube, and has a first average cross-sectional area, and a fluid-discharge chamber communicates with the other end of the tube, and has a second average cross-sectional area. The tube extends through the chambers, and each of the first and second cross-sectional areas exceeds the inner cross-sectional area by a factor of at least two. At least one of the chambers surrounds a corresponding end of the tube along at least a portion of the tube exceeding the average inner width thereof.

REFERENCES:
patent: 3817098 (1974-06-01), Brown
patent: 3964309 (1976-06-01), Husse et al.
patent: 4140012 (1979-02-01), Hendriks
patent: 4144752 (1979-03-01), Lolk

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