依据流型修正两相流组分含率的方法

两相流参数测量中,电容式组分含率传感器,受流型影响很大·仿真实验表明,该种传感器在测量管道气／油两相流截面含油率时,其误差高达１５％以上·流动成象可重建被测两相流体分布情况的图象,采用此处所述的依据流型修正浓度的方法,修正后的含油率误差降至５％以下·分析流型对测量的影响,导出了一个修正公式,并通过典型流型验证该修正方法的正确可行性·此修正方法同样适合其它气／液及液／液两相流·

A Correction Method of Component Fraction Relying on Two Phase Flow Regime

Flow regimes have great influences on component fraction measurements of two phase flows by capacitance transducers. The errors can be as high as 15% when oil fraction of gas/oil two phase flow is measured in a pipeline by simulations. Because the process tomographic methods can reconstruct the images of two phase flows, the proposed correction method can be used to reduce the errors to less than 5%. The influences of flow regimes were analyzed and a correction formula was derived. Typical regimes were used to verify the feasibility of the method. This correction method can also be applied to other gas/liquid or liquid/liquid two phase flows.