Schlumberger Industries, Sa

Flonic

Henri Oszajca

Charles Brunson

Alain Marlier

A single-jet liquid meter comprises a body in which a measurement chamber of substantially cylindrical shape is disposed. The chamber is fitted with a spinner having a longitudinal axis XX' and provided with blades, a liquid feed tube and a liquid discharge tube connected to the body and in alignment on an axis YY' that intersects axis XX' perpendicularly. A housing is disposed in the body around the periphery of the spinner and includes at least two slots respectively facing the feed tube and the discharge tube. The slots are designed to inject and eject the liquid flow in an inclined manner relative to the alignment axis of the tubes. At least one slot faces the feed tube and presents, to the flow of liquid coming from said tube, a shaped surface that progressively increases the speed of the flow.

Single-jet liquid meter with improved driving torque

A single jet liquid meter comprises a cylindrical measuring chamber having first and second end walls perpendicular to the axis of the chamber, an injector and an ejector in communication with the measuring chamber, and a turbine having a hub and plurality of blades fixed to the hub. The hub has first and second end faces disposed opposite the first and second end walls, respectively. A pivot and shaft guide the turbine in rotation about the axis of the chamber. A set of radiating ribs are fixed to the first end wall and project into the chamber. The meter further includes an assembly consisting of an axial stop disposed adjacent the first end face and includes a pivot having a tapering point and an abutment which is in contact with the point when the liquid flow rate is zero. The meter is arranged such that the second end face is subjected to a pressure reduction effect produced by rotation of the liquid in the chamber. A collar and annular zone are provided for protecting the first end face from the reduced pressure effect at low speeds of rotation of the turbine, in such a manner that the turbine moves axially to take the point out of contact with the abutment, and to subject the first end face to the pressure reduction phenomenon from a given axial displacement of the turbine, such that the turbine is fixed axially under the reduced pressure effect which is applied to both of the end faces.

Growing community of inventors

Macon, France

Henri Oszajca