Karman's vortex flow metering apparatus

Details Karman's vortex flow metering apparatus Karman's vortex flow metering apparatus

1982-06-15

1984-09-11

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

044703104

ABSTRACT:
In the particular embodiments of the invention described herein, a Karman's vortex flow metering apparatus has an oscillating plate magnetically held at the vertex of a triangular chamber located outside a flow line. Within the flow line a Karman's vortex generator is mounted transverse to the flow direction and has vortex generating slits extending along its length. Pressure detecting slits located at the end of the generator near the detector communicate through short pressure transmitting lines with opposite sides of the chamber. The resulting oscillation of the plate is detected optically or magnetically to provide signals corresponding to the flow rate.

REFERENCES:
patent: 2453376 (1948-11-01), Lagasse
patent: 3722273 (1973-03-01), Yamasaki et al.
patent: 3796095 (1974-03-01), Fussell, Jr.
patent: 4161878 (1979-07-01), Fussell, Jr.
patent: 4206642 (1980-06-01), Bearcroft
Yamasaki et al., "The Karman Vortex Flowmeter" in J. Soc. Inst. Cont. Eng.. (Japan), vol. 10, No. 3, 3/71, pp. 173-188.

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