燃气管道论文：燃气管道泄漏定位与报警系统研究.doc

燃气管道论文：燃气管道泄漏定位与报警系统研究———————————————————————————————— 作者：———————————————————————————————— 日期： 燃气管道论文：燃气管道泄漏定位与报警系统研究【中文摘要】管道运输作为与铁路、公路、航空、水运并行的五大运输手段之一,是城市公用根底设施的重要组成局部,在国民经济中的地位越来越重要但由于管道老化腐蚀以及人为损坏等原因,管道泄漏事故频发,造成资源严重浪费且污染了大气环境,给人民的生命财产带来了严重的威胁因此,建立一套有效的管道泄漏检测及定位报警系统,具有极其重要的意义与此同时, GIS作为一种新的计算机管理系统应运而生,它具有空间关系与实物对应明确的特点,而WebGIS是将地理信息系统和互联网技术相结合,对管网信息进展共享于是,本文将WebGIS与管网的泄漏定位相结合,能够在有危险情况发生时,准确定位泄漏点的位置,为采取有效措施应对突发事件提供了可靠的参考信息本文从管道中气体运动的根本规律出发,建立管道动态仿真模型,并利用准确度较高、稳定性较好的特征线方法对瞬态模型进展计算机数值求解根据特征线方法,以C#为开发工具,编制管道动态仿真模拟软件,对真实天然气管道进展动态仿真模拟,验证了动态仿真软件的准确性。

其次,作者提出了管道泄漏报警及定位理论,采用管段两端双向同时仿真进展检漏与定位的方法,并详细表达了三色报警理论以及如何排除误报情况,该理论使泄漏报警精度提高,结果更加可靠在理论分析的根底上,本文设计了室内管道泄漏定位及报警实验装置,模拟实际应用管道输送气体正常运行以及发生泄漏时的情况,对整套实验系统的构造设计及软硬件的设计与开发进展了详细的阐述并利用该实验监测系统进展了屡次泄漏定位实验及数据分析,为管道泄漏检测的实际应用提供了实验根底最后,以.Net为开发工具,以Arcgis9.3为开发平台,以重庆市长寿区燃气管网为例,基于WebGIS开发出燃气管网状态监控系统,实现燃气管道内流体运行状况的查询、管理和分析等功能,将管段信息与空间地理信息结合起来,将所确定的泄漏管段的信息与位置在地图中显示英文摘要】Pipeline Transport is one of five transportation means, parallels to railway, highway, aviation and water transport, which is also an important part of urban public basic facilities. It is becoming increasingly important in national economy. However, because of the reasons of pipeline’s ageing, corrosion and man-made damage, the pipeline leakage accidents occur frequently, which results in hazardous material leakage, resources serious waste and atmospheric environmental pollution, huge life and property losses both for the people. Therefore, it is particularly significant for establishing a set of effective pipeline leakage detection and location system. Meanwhile, after the gas leakage of pipeline, under the action of exterior airflow and interior concentration gradient, hazardous gas diffusion will form dangerous area along the earth’s surface. Therefore, definiting the diffusion scope and concentration of hazardous gas at the point of leakage is important for evacuation and rescue after the accident. Moreover, GIS is born at the right moment as a kind of new computer management system, with the characteristic that space relation corresponds to material object definitely. GIS is integrated with leakage location and diffusion of pipeline, when the dangerous conditions occurs, locating the leak point exactly provide riable bibliography information for adopting effective measures to emergency.In this article, start from the gas kinetic basic regularity in the pipeline and establish dynamic simulation model of pipeline, use characteristic method with high accuracy and better stability to solve transient model using computer. Based on characteristic method, by C# development tools, compile the dynamic simulation software of pipeline and simulate the real gas pipeline, the accuracy of dynamic simulation software is verified. Then, the theory of leakage caution and location of pipeline is proposed by author, the three-colour alarm and how to exclude false alarm are narrate in detail, and based on the dynamic simulation software the module of leakage location and caution is added, making the software more perfect.Based on the theoretical analysis, the experimental system of leakage location and caution of indoor pipeline is designed in this article, simulating the statement of gas normal operation and leakage in actual application pipeline, the configuration design and the design and development of system software and hardware of the whole set of experimental system is narrated in detail. Leakage experiment and data analysis are made in the experimental monitoring system, in order to provide experimental base for practical application of pipeline leakage detection.Finally, by C# development tool, by the Arcgis 9.3 development platform, realize the inquiring, management and analysis functions, and combine the pipeline imformation with spatial geographic information, definite the point of leakage pipeline.【关键词】燃气管道 泄漏定位 动态仿真 模型实验 模拟软件 GIS【英文关键词】gas pipeline leakage location dynamic simulation model experiment simulating software GIS【目录】燃气管道泄漏定位与报警系统研究摘要3-4ABSTRACT4-5第一章 绪论8-181.1 研究背景8-101.2 国内外研究现状10-151.2.1 燃气管网泄漏检测与定位方法研究及开展现状10-141.2.2 燃气管网GIS 的研究与开展现状14-151.3 本文拟解决的问题151.4 本文的主要研究内容、方法及意义15-171.4.1 主要研究内容和方法15-161.4.2 本课题研究的意义16-171.5 本章小结17-18第二章 天然气管道泄漏定位及报警理论研究18-422.1 动态分析理论根底18-212.1.1 流体流动根本定律182.1.2 根本假设182.1.3 连续性方程18-192.1.4 动量方程19-212.2 动态仿真模型的建立21-272.2.1 初始条件和边界条件21-222.2.2 压力分级22-232.2.3 摩阻系数23-242.2.4 动态非管元件模型24-252.2.5 动态仿真模型的建立及分析25-272.3 动态仿真模型的数值模拟27-372.3.1 数值模拟方法272.3.2 特征线方程的建立27-282.3.3 特征线解法28-332.3.4 动态模拟仿真程序的编制332.3.5 天然气管道动态仿真模拟实例33-372.4 燃气管道泄漏报警定位理论及其程序的编制37-402.4.1 泄漏黄色警报37-382.4.2 黄色误报排除及泄漏橙色警报382.4.3 橙色误报排除及泄漏红色警报。