Measuring and testing – Volume or rate of flow – Of selected fluid mixture component
Patent
1984-10-31
1986-03-11
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Of selected fluid mixture component
73195, 73200, 364510, G01F 174, G01F 1508
Patent
active
045746435
ABSTRACT:
The tubular flowmeter is capable of measuring two different physical parameters in a flowing mixture of liquid and gas (such as wet steam). These measurements are such that they can be used to determine the individual gas and liquid flowrates. The flowmeter comprises first means, such as an orifice plate or a twisted tape, for causing an accelerational or frictional pressure drop in the total flow. Suitable means measure such pressure drop. Downstream of the first means, is positioned means for inducing rotational motion of the total flow, to cause the mixture to separate while remaining within the same conduit into discrete liquid and gas flows. Such means may comprise a rib extending helically along the inner surface of the flowmeter. Means, such as a pitot-static tube assembly, measure a pressure head indicative of the velocity of the gas flow. Downstream from this velocity measurement device, the two phases are permitted to mix freely again, all the time remaining within the same conduit. The total flow pressure drop and gas flow velocity head measurements are used to compute or determine the individual gas and liquid flowrates.
REFERENCES:
patent: 1927577 (1933-09-01), Stone
patent: 3386286 (1968-06-01), Moore
patent: 3525258 (1970-08-01), Fowler et al.
patent: 4178801 (1979-12-01), Cassell et al.
patent: 4282760 (1981-08-01), Pitts, Jr. et al.
patent: 4312234 (1982-01-01), Rhodes et al.
patent: 4429581 (1984-02-01), Furmaga
Rhodes Edward
Scott Donald S.
Alberta Oil Sands Technology and Research Authority
Ruehl Charles A.
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