文丘里管内湿天然气流动特性研究进展

The study of the wet gas flow characteristics in venture

湿天然气计量对于石油天然气工业越来越重要,文丘里流量计由于压力损失小,直管段短,受流型的影响小等优势广泛应用于湿天然气的测量。然而,湿天然气通过文丘里管时,由于液相的存在,使得通过文丘里管时产生的压差值会比等量的气相单独流过时偏高,这种现象称为"虚高"。近几年来国内外研究者对文丘里管湿气测量的虚高进行了大量研究,下面将从实验研究、机理模型研究、数值研究三方面作以简要概述。

The measurement of wet gas is increasingly important for the oil and gas industry.Due to the small pressure loss, short straight sections, little effects by flow patterns and other advantages, venturi meters are widely used in the measurement of wet gas.However,when the wet gas through the venturi, due to the presence of the liquid phase, the differential pressure generated more than the dry gas flow alone,this phenomenon called over-reading.In recent years,domestic and foreign researchers studied the venturi measurements over-reading,following will summarize these researches from the experimental, mechanism model and numerical study.