Torsional vortex sensor

Details Torsional vortex sensor Torsional vortex sensor

1990-12-31

1992-04-07

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

051016680

ABSTRACT:
A vortex sensor comprises a pressure sensing planar member disposed within a flow passage parallel to a vortex generating bluff body and the central axis of the flow passage and supported by a supporting body in an arrangement allowing at least a minute amount of pivoting movement of the pressure sensing planar member about a torsion axis disposed parallel to the pressure sensing planar member and perpendicular to the central axis of the flow passage adjacent to one of the leading and trailing edges of the pressure sensing planar member, and a lateral extension extending from the pressure sensing planar member in a direction perpendicular to the torsion axis and to the central axis of the flow passage and connected to a transducer at an extremity thereof, whereby the transducer converts an alternating torque about the torsion axis exerted on the pressure sensing planar member by the vortices in the fluid stream to an alternating electrical signal, wherein the pressure sensing planar member is disposed downstream of the vortex generating bluff body or within a planar cavity included in the vortex generating bluff body.

REFERENCES:
patent: 4181020 (1980-01-01), Herzl
patent: 4380935 (1983-04-01), Sgourakes

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