High sensitivity vortex shedding flowmeter
This patent describes an apparatus for measuring fluid flows. It comprises: a flowmeter body including a flow passage; a vortex generator of an elongated cylindrical shape disposed across a cross section of the flow passage, wherein at lest one extremity of the vortex generator is secured to the flowmeter body; a transducer contained in a container vessel secured to the flowmeter body, wherein the transducer is pressed onto a thin wall of the container vessel; and a flexible coupling connecting the thin wall of the container vessel to a deflective portion of the vortex generating, wherein the flexible coupling enhances relative deflection between the vortex generator and the container vessel. Wherein fluctuating fluid dynamic forces resulting from vortices shed from the vortex generator and experienced by vortex generator generate fluctuating electrical signals from the transducer as a measure of fluid flow through the flow passage.
- Assignee:
- NOV; EDB-90-075697; NOV-90-006374
- Patent Number(s):
- A; US 4884458
- Application Number:
- PPN: US 7-147812A
- OSTI ID:
- 7180109
- Country of Publication:
- United States
- Language:
- English
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