Flow meter for bitumen froth pipelines

Measuring and testing – Volume or rate of flow – Using differential pressure

Reexamination Certificate

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Reexamination Certificate

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07610818

ABSTRACT:
A method and apparatus for measuring the flow rate of bitumen froth through a pipeline is provided. A flow meter device is provided including a conduit comprising an approach section having a diameter less than the diameter of the pipeline and a venturi section having in series a converging section, a throat section and, optionally, a diverging section, the converging section of the venturi section being disposed relative to the approach section, and a means for measuring the pressure difference ΔP between two points that are separate from one another in the flow direction, one point being on the approach section and the other point being on the throat section. In one embodiment, a heating means for heating the conduit is provided.

REFERENCES:
patent: 4165361 (1979-08-01), Milstein
patent: 4165631 (1979-08-01), Boinet et al.
patent: 4644800 (1987-02-01), Kozlak
patent: 4651572 (1987-03-01), Albertz et al.
patent: 4829831 (1989-05-01), Kefer et al.
patent: 4856344 (1989-08-01), Hunt
patent: 5880378 (1999-03-01), Behring, II
patent: 5933574 (1999-08-01), Avansino
patent: 6171025 (2001-01-01), Langner et al.
patent: 0234747 (1991-03-01), None

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