Flow meters

Details Flow meters Flow meters

1979-08-03

1981-03-10

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Using differential pressure

G01F 122

Patent

active

042546648

ABSTRACT:
A fluid flow meter that includes a flow tube having a fluid flow input and a fluid flow output, the tube also having a peripheral wall that defines a generally circular flow cross-section. A round measuring orifice is provided in the tube and between the input and the output. A contoured plug is slidably mounted in the orifice on an axial slide, the plug being normally biased toward the inlet so as to close the orifice. The plug is of a curvilinear tapering cross-section, the curvature of which is such as to produce a linear relationship between differential pressure across an annulus formed by the coincidence of the plug and the orifice and between the flow through the annulus. A fluid flow indicator serves to indicate the fluid flow through the flow tube.

REFERENCES:
patent: 599746 (1898-03-01), St. John
patent: 2816441 (1957-12-01), Ezekiel
patent: 2941401 (1960-06-01), Streeter
patent: 3182501 (1965-05-01), Haase
patent: 3528288 (1970-09-01), Scourtes

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