Flexible membrane variable orifice fluid flow meter

Details Flexible membrane variable orifice fluid flow meter Flexible membrane variable orifice fluid flow meter

1995-06-09

1997-08-05

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Using differential pressure

73715, G01F 134

Patent

active

056545126

ABSTRACT:
A flexible membrane variable orifice fluid flow meter which comprises a body, having a fluid conducting passageway therethrough, where the passageway has a first lateral width and second lateral width, and where the second lateral width is greater than the first, a backing bracket having a flat underside disposed within the second lateral width portion of the passageway perpendicularly to the direction of fluid flow and positioned so as to be superimposed over the first lateral width portion of the passageway, where the backing bracket has a lateral width less than the second lateral width but greater than the first lateral width of the passageway, a flexible membrane having head and toe ends, disposed between the flat underside of the backing bracket and the first lateral width portion of the passageway, and secured at its head end between the backing bracket and the body so that under conditions of zero fluid flow rate, the membrane obstructs the passageway across the second lateral width thereof, and differential pressure sensing ports disposed respectively in the first and second width portions of the passageway.

REFERENCES:
patent: 3485104 (1969-12-01), Sanford
patent: 4729244 (1988-03-01), Furuse
patent: 5033312 (1991-07-01), Stupecky
patent: 5038621 (1991-08-01), Stupecky

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