Mass Flow Rate Measurement of Oil-Water Two-Phase Flow by a Long-Waist Cone Meter
Mass Flow Rate Measurement of Oil-Water Two-Phase Flow by a Long-Waist Cone Meter
复制标题
长腰锥体流量计测量油水两相流质量流量
DOI：
10.1109/tim.2013.2263660
复制
发表时间：
2013-10-01
影响因子：
5.6
通讯作者：
Dong, Feng
中科院分区：
文献类型：
--
作者：
Tan, Chao;Wu, Hao;Dong, Feng
提出了一种用于水平油水两相流量测量的长腰锥流量计。流量测量采用收缩差压增量p和总压差增量p。通过伯努利方程，βp与流量有关。通过物理分析，给出了用总压差增量p预测质量流量的关联式。在分离流模型的基础上，将增量p和增量p的关联式推广到预测两相流的质量流量。然后结合增量p(Tp)和增量p(Tp)的两个关联式，提出了双重差压模型。实验中的流态有水连续流态和油连续流态。对于水连续流和油连续流，采用双压差模型预测总质量流量，相对误差分别为2.7%和4.1%。本文指出，用长腰圆锥计和双差压模型测量油水两相流的总质量流量时，不需要二次测量相分数的仪器，测量精度可达+/-5%以内，且受反相影响较小。
A long-waist cone meter is proposed for horizontal oil-water two-phase flow rate measurement. A constricting differential pressure Delta p and an overall differential pressure delta p were tapped for flow rate measurement. Delta p is related to flow rate through Bernoulli's equation. A correlation for predicting the mass flow rate by using the overall differential pressure delta p is presented through physical analysis. Correlations of Delta p and delta p are then extended to predict the mass flow rate of two-phase flow based on the separated flow model. A dual differential pressure model is then proposed by combining the two correlations of Delta p(tp) and delta p(tp). The flow regimes in the experiments include water continuous and oil continuous. Prediction on overall mass flow rate is improved by using the dual differential pressure model at an associated error of 2.7% and 4.1%, respectively, for water-continuous flow and oil-continuous flow. This paper indicates that the overall mass flow rate of oil-water two-phase flow can be determined at an accuracy within +/- 5% with a long-waist cone meter and the dual differential pressure models without the aid of a secondary instrument for the phase fraction measurement, and the results are less affected by phase inversion.