低含液管线内液膜厚度分布特性的试验研究

发布时间：2018-01-12 14:40

本文关键词：低含液管线内液膜厚度分布特性的试验研究　出处：《流体机械》2017年02期 　论文类型：期刊论文

【摘要】：湿气集输管线内存在低含液气液两相流动。利用相似准则建立试验管道,结合螺旋测微器设计出瞬时液膜厚度测量装置,对低含液管线内液膜厚度分布特性进行研究。结果表明:液膜具有波动性,水平管内液膜主要集中在底部,两侧存在薄液膜。同一表观气速下,随着表观液速的增加,液膜分布范围变大,最厚值先变小后增大;同一表观液速下,随着表观气速的增加,弯头下竖直管周向液膜最厚值和最薄值变小,周向等效均匀液膜厚度变小。
[Abstract]:There is a low liquid gas-liquid two-phase flow in the wet gas gathering pipeline. The test pipe is established by using the similarity criterion, and the instantaneous liquid film thickness measuring device is designed by combining with the spiral micrometer. The characteristics of the liquid film thickness distribution in the low liquid content pipeline are studied. The results show that the liquid film is fluctuating, the liquid film in the horizontal pipe is mainly concentrated at the bottom, there are thin liquid films on both sides, and the same apparent gas velocity. With the increase of apparent liquid velocity, the range of liquid film distribution becomes larger, and the thickest value decreases first and then increases. At the same apparent liquid velocity, with the increase of the apparent gas velocity, the maximum and thinnest values of the circumferential liquid film of the vertical tube under the elbow become smaller, and the thickness of the circumferential equivalent uniform liquid film becomes smaller.
【作者单位】：中国石油大学(华东);广西天然气管道有限责任公司;
【基金】：国家自然科学基金资助项目(51276200;41106068) 青岛市科技计划项目(14-2-4-63-jch) 中央高校基本科研业务费专项资金资助项目(15CX06045A;16CX05011A)
【分类号】：TE86
【正文快照】： 1前言低含液率是指每百万标准立方米(MMsm3,101.3 k Pa、15℃)气相中液相体积小于1100m3,或者表观液速小于0.02 m/s的工况[1]。在湿天然气集输过程中,温度、压力的变化导致饱和水蒸气发生相变生成凝析水,进而形成低含液气液两相流动[2]。管壁就会产生液膜分布[3],CO2、H2S等腐

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