Measuring and testing – Volume or rate of flow – Tank type
Patent
1981-04-30
1982-12-21
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Tank type
73200, G01F 338
Patent
active
043642691
ABSTRACT:
This invention is a compact, precise, and relatively simple device for use in determining the average rate of flow of a liquid through a conduit. The liquid may be turbulent and contain bubbles of gas. In a preferred embodiment, the flowmeter includes an electrical circuit and a flow vessel which is connected as a segment of the conduit conveying the liquid. The vessel is provided with a valved outlet and is partitioned by a vertical baffle into coaxial chambers whose upper regions are vented to permit the escape of gas. The inner chamber receives turbulent downflowing liquid from the conduit and is sized to operate at a lower pressure than the conduit, thus promoting evolution of gas from the liquid. Lower zones of the two chambers are interconnected so that the downflowing liquid establishes liquid levels in both chambers. The liquid level in the outer chamber is comparatively calm, being to a large extent isolated from the turbulence in the inner chamber once the liquid in the outer chamber has risen above the liquid-introduction zone for that chamber. Lower and upper probes are provided in the outer chamber for sensing the liquid level therein at points above its liquid-introduction zone. An electrical circuit is connected to the probes to display the time required for the liquid level in the outer chamber to successively contact the lower and upper probes. The average rate of flow through the conduit can be determined from the above-mentioned time and the vessel volume filled by the liquid during that time.
REFERENCES:
patent: 2069990 (1937-02-01), Bjork et al.
patent: 2325695 (1943-08-01), McAfee
patent: 3125881 (1964-03-01), Peters et al.
patent: 3177699 (1965-04-01), Lindquist et al.
patent: 3279379 (1966-10-01), Klyce
Kennerly John M.
Lindner Gordon M.
Rowe John C.
Besha Richard G.
Hamel Stephen D.
Lewis Fred O.
Ruehl Charles A.
The United States of America as represented by the United States
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