Vortex fluid meter including a profiled pipe

Details Vortex fluid meter including a profiled pipe Vortex fluid meter including a profiled pipe

1996-09-19

1998-09-15

Dombroske, George M.

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

058082093

ABSTRACT:
A vortex fluid meter (1) includes a pipe (2) having a maximum inside diameter D in which the fluid flows and having an internal profile comprising from the upstream end to the downstream end: a first pipe portion (4) progressively reducing the inside diameter of said pipe to a value D1 and having an inside wall (4a, 4b, 4c, 4d) at a continuously varying angle to the general direction of flow of the fluid; a second pipe portion (6) of constant diameter D1 in which is disposed at least one obstacle (8) adapted to generate oscillating fluid vortices; and a third pipe portion (20) returning the inside diameter of the pipe (2) to its original value D and adapted to separate the boundary layer of the fluid flow at a downstream end (6a) of said second pipe portion (6), and means (10, 12, 14, 16, 18, 200-221) for detecting the signal corresponding to the oscillations of the vortices and deducing the volume of fluid therefrom.

REFERENCES:
patent: 3927564 (1975-12-01), Ketelsen
patent: 4142407 (1979-03-01), Kuroiwa et al.
patent: 4240293 (1980-12-01), Hughes
patent: 4453416 (1984-06-01), Knudsen
patent: 5398548 (1995-03-01), Ono
patent: 5569859 (1996-10-01), Gatzmanga et al.

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