Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1991-10-23
1993-07-06
Goldstein, Herbert
Measuring and testing
Gas content of a liquid or a solid
By vibration
73 1910, G01N 3300
Patent
active
052243729
ABSTRACT:
Multiphase (gas and two liquid phases) fluid flowstreams are measured to determine the total flow rate, fluid density, the fraction of gas, and one liquid in the total liquid mixture by passing the flowstream through a Ceriolis flow meter (16, 40), a densimeter (12) and a meter (14) which measures the fraction of one liquid in the two liquid mixture. The total fluid flow rate may be measured by a single tube flow meter (40) having adjacent loops which provide tube legs (49, 51) positioned adjacent each other and vibrated laterally at a predetermined frequency and amplitude while measuring pressures in the contraflowing streams in the adjacent tube legs. The density and gas fraction of the flowstream may be determined by vibrating a tube containing the flowstream over a range of frequencies and measuring the phase angle and amplitude of the fluctuating fluid pressures compared with acceleration of the tube to determine the sloshing natural frequency of the fluid mixture. The tube may be vibrated at a frequency far from the sloshing natural frequency of the fluid mixture to determine the fluid density.
REFERENCES:
patent: 3927565 (1975-12-01), Pavlin et al.
patent: 4096745 (1978-06-01), Riukin et al.
patent: 5029482 (1991-07-01), Liu et al.
Atlantic Richfield Company
Goldstein Herbert
Martin Michael E.
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