Dual-body vortex-shedding flowmeter

Details Dual-body vortex-shedding flowmeter Dual-body vortex-shedding flowmeter

1982-06-28

1984-05-01

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

044453884

ABSTRACT:
A vortex-shedding flowmeter for accurately measuring the flow rate of gases and liquid conducted through a flow tube provided with a dual-body shedder having a front section fixedly mounted across the tube, behind which is a pivotally mounted rear section separated from the front section by a gap configured to produce a fluidic feedback path so that a strong hydraulic interaction takes place between the sections and both actively contribute to the formation of periodic vortices which are alternately shed on either side of the shedder. The rear section is mounted on a pivot shaft extending along an axis normal to the flow axis of the tube, whereby the vortices which appear on either side of the rear section induce the rear section to oscillate. These oscillations are sensed to produce a signal representing the flow rate.

REFERENCES:
patent: 3116639 (1964-01-01), Bird
patent: 3888120 (1975-06-01), Burgess
patent: 4033188 (1977-07-01), Herzl
patent: 4033189 (1977-07-01), Herzl et al.
patent: 4226117 (1980-10-01), Herzl
patent: 4262544 (1981-04-01), Herzl

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