庆哈输气管线输差计算及影响因素分析

发布时间：2018-03-19 10:42

本文选题：管道输差　切入点：超声波计量　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：因天然气长输管道的首末端计量、管道存气计算等因素的影响会产生输差,输差是控制管道的运行、权衡输气的成本的一个关键参数与指标。针对输气系统的输差问题,从误差理论出发,以输气干线系统为研究对象。首先,以超声波流量计的工作原理为重点。通过对超声波流量计时差法的研究,了解流量计最常用的计量方式与方法。然后,以天然气组分为基础,追溯、研究天然气压缩因子的解法,并予以改进。最后,以BWRS方程为基础,通过Excel求得方程系数,然后从中解出气体密度,代入气体状态方程中求得压缩因子,再由VB、C语言编程求解气体密度。通过对天然气压缩因子的求解,找到影响压缩因子的主要因素,从而修正天然气输量,以便减少输差。
[Abstract]:Because of the influence of the first and end metering of natural gas pipeline and the calculation of gas storage in pipeline, the transportation difference is a key parameter and index to control the operation of pipeline and weigh the cost of gas transmission. Starting from the error theory, taking the gas transmission trunk line system as the research object. Firstly, focusing on the working principle of the ultrasonic Flowmeter. Through the study of the ultrasonic Flowmeter time difference method, we know the most commonly used metering methods and methods of the Flowmeter. Based on natural gas components, the solution of natural gas compression factor is studied and improved. Finally, based on the BWRS equation, the coefficient of the equation is obtained by Excel, and the gas density is obtained from the solution. The compressibility factor is obtained from the equation of state of gas, and then the gas density is solved by VBU C language. By solving the compressibility factor of natural gas, the main factors affecting the compressibility factor are found, and the quantity of natural gas is corrected so as to reduce the transportation difference.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE973.1

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