Abstract
Based on a hybrid flowmeter and a dominant phase identifier, a new system is proposed for oil-water two-phase flow measurement. The hybrid flowmeter consists of an oval gear flowmeter and a Venturi meter. The dominant phase identifier is utilized to overcome the influence of oil fraction on the measurement results. In the practical measurement process, the total volume flowrate and the differential pressure of the two-phase flow are firstly obtained by the oval gear flowmeter and the Venturi meter, respectively. Meanwhile, the dominant phase of the oil-water two-phase flow is identified. Then the meter coefficient of the Venturi meter is selected according to the dominant phase identification result. Finally, the total volume flowrate and the total mass flowrate of the two-phase flow are obtained. The preliminary research results show that the proposed system is effective in measuring oil-water two-phase flow.
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