Obstacle assembly for vortex type flowmeter

Details Obstacle assembly for vortex type flowmeter Obstacle assembly for vortex type flowmeter

1974-08-01

1978-02-21

Haroian, Harry N.

Measuring and testing

Volume or rate of flow

System

G01F 100

Patent

active

040745716

ABSTRACT:
A flowmeter including a conduit-forming a passage for the liquid to be measured and an obstacle assembly mounted therein capable of generating strong, stabilized fluidic oscillations which cause a deflectable non-streamlined section of the assembly to vibrate at a corresponding rate, the vibrations being sensed to produce a signal whose frequency is proportional to the flow rate of the fluid passing through the conduit. The non-streamlined section is cantilevered from a front section to define a gap therebetween and is provided with a downstream tail whose geometry is such as to reinforce the fluidic oscillations trapped within said gap to thereby improve the signal-to-noise ratio of the signal.

REFERENCES:
patent: 2936619 (1960-05-01), Gibney
patent: 3175398 (1965-03-01), Sundin
patent: 3589185 (1971-06-01), Burgess
patent: 3677067 (1972-07-01), Miller
patent: 3698245 (1972-10-01), McNabb
patent: 3719073 (1973-03-01), Mahon
patent: 3867839 (1975-02-01), Herzl

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