长管道中脉冲压力波传播特性实验研究  

Experimental Investigation on Propagation Characteristics of Pulse Pressure Wave in a Long Pipeline

作　　者：曹业奇 徐强[1] 黄博 于海洋 郭烈锦[1] CAO Yeqi;XU Qiang;HUANG Bo;YU Haiyang;GUO Liejin(Xi’an Jiaotong University,State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an 710049)

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《工程热物理学报》2024年第11期3375-3382,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51888103,No.52076175)。

摘　　要：在海洋油气输运管道中,存在诸多瞬态行为会引起局部的压力波。大幅度压力波的传播会引起井口压力的大幅波动,严重威胁下游处理设施的平稳运行。本文在管径为46 mm、长1657 m的水平管道,使用高频压力信号获取了脉冲压力波在段塞流中的传播特性数据。研究发现脉冲压力波的传播遵循幂律衰减,沿管道长度呈现出非线性、色散性特征。气相的可压缩性严重阻碍了脉冲压力波的传播,随着表观气速的增大,压力波传播速度减小,衰减程度进一步增大。水平管段塞流中脉冲压力波的整体平均传播速度和衰减系数的范围分别为45∼351 m/s和0.921∼2.137×10^(−3)dB/m。基于长管道脉冲压力波数据,建立了段塞流中脉冲压力波传播速度及衰减系数的预测关联式。In offshore oil and gas pipelines,there are many transient behaviors that can cause local pressure waves.The propagation of large amplitude pressure waves will cause large fluctuations in wellhead pressure,which seriously threatens the stable operation of downstream treatment facilities.In this paper,the propagation characteristics of pulse pressure wave in slug flow are obtained by using high-frequency pressure signals in a 46 mm ID,1657 m long pipeline.It is found that the propagation of pulse pressure waves follows power-law attenuation and presents nonlinear and dispersive characteristics along the length of the pipeline.The compressibility of the gas phase seriously hinders the propagation of pulse pressure waves.With the increase of superficial gas velocity,the propagation velocity decreases and the attenuation coefficient increases.The overall average propagation velocity and attenuation coefficient of the pulse pressure wave in the horizontal slug flow is 45∼351 m/s and 0.921∼2.137×10^(−3)dB/m,respectively.The prediction correlations of pulse pressure wave propagation velocity and attenuation coefficient in slug flow are established based on the pulse pressure wave data in long pipeline.

关 键 词：段塞流 脉冲压力波 传播速度 衰减系数 长管道 

分 类 号：TF19[冶金工程—冶金物理化学] TK91[动力工程及工程热物理]