Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1988-05-11
1989-07-04
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
137826, 137833, G01F 100
Patent
active
048438898
ABSTRACT:
A trapped-vortex pair flowmeter having a body with an inlet and an outlet. The inlet has a nozzle which forms a fluid jet having two primary counter-rotating vortices. The body has a chamber between the inlet and outlet through which the fluid jet flows. Two wedges are secured within the chamber. Each wedge has an inner side and an outer side. The inner sides of both wedges form a converging channel between the upper portions of both wedges. Both wedges have a gap between the inner sides of the wedges through which the converging channel passes. The inlet nozzle directs the fluid jet into the converging channel. A small portion of the fluid jet flows through the gap within the converging channel, but the majority of the fluid jet flows back over the top sections and down the outer sides of the wedges. Pressure sensors located within the chamber detect alternating high and low pressures at various points within the chamber. The fluid flow rate is proportional to the frequency of the oscillation of the two primary counter-rotating vortices within the main fluid jet stream.
REFERENCES:
patent: 3500849 (1970-03-01), McLeod, Jr.
patent: 3589185 (1971-06-01), Burgess
patent: 3640133 (1972-02-01), Adams
patent: 3690171 (1972-09-01), Tippetts et al.
patent: 3855859 (1974-12-01), Adams
patent: 3885434 (1975-05-01), Williamson
patent: 4085615 (1978-04-01), Haefner et al.
patent: 4184636 (1980-01-01), Bauer
patent: 4244230 (1981-01-01), Bauer
patent: 4550614 (1985-11-01), Herzl
patent: 4610162 (1986-09-01), Okabayashi et al.
"Fluidic Flow Measurement and Control Devices", Measurement and Control, vol. V, No. 10, Oct. 1972, R. F. Boucher and J. K. Royle.
"Experimental Investigation of a Fluidic Volume Flowmeter", Journal of Basic Engineering, Mar. 1970, M. P. Wilson, Jr., C. H. Coogan, Jr., K. Southall.
"Gas Measurement, Domestic Gas Meter Adjustment Using Coanda Mastermeters", Australian Gas Journal, Jun. 1982, Dr. P. H. Wright.
"The Coanda Meter-a Fluidic Digital Gas Flow Meter", J. Phys. E: Sci. Instrum., vol. XIII, 1980, P. H. Wright, Great Britain.
"Whither Metering", Institution of Gas Engineers, 123rd Annual General Meeting, Princess Theatre, Torquay, Great Britain, May 13-15, 1986, pp. 25-26.
Mansy Hussein A. E.
Williams David R.
Gas Research Institute
Goldstein Herbert
Pauley Douglas H.
Speckman Thomas W.
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