倾斜管气水两相段塞流特性实验研究

发布时间：2018-03-31 04:26

本文选题：段塞流　切入点：倾斜管　出处：《西安石油大学》2017年硕士论文

【摘要】：油气的混合输送技术在当今的石油工业中日益重要,因其具有高效率、低成本、环境适应性强等特点,而受到世界各国石油工作者的普遍重视。为保证管线和下游油气处理设备的最优设计和安全操作,对段塞流的特性研究和分析至关重要。经过对国内外文献的调查研究发现,目前对段塞流的研究对象多数都是水平管路,缺乏对倾斜管路的研究,但实际输送中由于地形的起伏,管路多数都是倾斜的,所以对倾斜管段塞流的研究具有重要的实际意义。本实验依托西安石油大学多相流实验室,通过运用空气压缩机和多级离心泵等设备搭建实验管路,以水和空气为介质,在管道内径为25mm,倾斜角度分别为2.5°、5°、7.5°的倾斜管路中进行气水两相段塞流的特性实验研究。主要结论如下:(1)混合速度增大,段塞流液塞的平均速度会随着上倾幅度的增大而增大。(2)上倾角增大,同种工况下段塞流的液塞长度增大。(3)管道中表观液速一定时,水平管中的液塞频率大于倾斜管;表观气速一定时,水平管的液塞频率在表观液速较低时小于倾斜管。(4)段塞流的形成不仅与表观气速和表观液速有关,还与管道的倾斜角度有关。
[Abstract]:The mixed transportation technology of oil and gas is becoming more and more important in today's petroleum industry. Because of its high efficiency, low cost and strong environmental adaptability, oil workers all over the world pay more attention to it.In order to ensure the optimal design and safe operation of pipeline and downstream oil and gas treatment equipment, it is very important to study and analyze the characteristics of slug flow.Through the investigation and study of domestic and foreign literature, it is found that most of the research objects of slug flow are horizontal pipe lines at present, but most of the pipelines are inclined because of the topography fluctuation in the actual transportation.Therefore, the study of slug flow in inclined pipe section is of great practical significance.This experiment relies on the laboratory of multiphase flow of Xi'an University of Petroleum, through the use of air compressor and multi-stage centrifugal pump and other equipment to build the experimental pipeline, with water and air as the medium,The characteristics of gas-water two-phase slug flow in an inclined pipeline with an internal diameter of 25 mm and a slope angle of 2.5 掳~ 5 掳~ 7.5 掳are studied experimentally.The main conclusions are as follows: (1) when the mixing velocity increases, the average velocity of slug will increase with the increase of updip amplitude.The frequency of liquid slug in horizontal pipe is higher than that in inclined tube, and when the apparent gas velocity is constant, the frequency of liquid plug in horizontal pipe is smaller than that in inclined tube when the apparent liquid velocity is low. The formation of slug flow in horizontal pipe is not only related to the apparent gas velocity and apparent liquid velocity.It is also related to the inclined angle of the pipe.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE83

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