Vortex-shedding flowmeter with torsional sensor mounted on torqu

Details Vortex-shedding flowmeter with torsional sensor mounted on torqu Vortex-shedding flowmeter with torsional sensor mounted on torqu

1980-08-14

1982-05-18

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

043298800

ABSTRACT:
A vortex-shedding flowmeter capable of accurately measuring the flow rate of a liquid or gas even under extreme operating conditions. The fluid to be metered is conducted though a flow pipe having a shedder fixedly mounted therein. A sensor which is caused to oscillate at a rate proportionate to the flow rate of the fluid is torsionally supported downstream behind the shedder on a pivot axis normal to the flow axis of the pipe, the torsional support including a torque tube whose base is received within a bore in the pipe and is welded thereto and whose tip is welded to one end of the sensor to provide a closed structure preventing leakage of fluid from the pipe. The sensor oscillations are converted into corresponding electrical signals by an external torque transducer operatively coupled to the sensor by a sensor link assembly including a rod which extends coaxially into the torque tube and is welded to the tip thereof.

REFERENCES:
patent: 1215135 (1917-02-01), Fisher
patent: 3796096 (1974-03-01), Sielaff
patent: 3927566 (1975-12-01), Zanker

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