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GIS下供热管网的设计模型与水力工况分析

发布时间:2018-08-06 13:54
【摘要】:当前,我国建筑能耗不断增加,采暖能耗在建筑能耗中的比例也越来越大。集中供热是我国采暖的主要方式,提高集中供热能源利用效率对我国建筑节能意义重大。随着采暖面积的不断增加,供热管网呈现出从单热源支状管网向多热源环状管网发展的趋势。同时,随之产生的供热管网设计不合理、水力失调严重等问题一直得不到解决。地理信息系统(GIS)是近些年飞速发展的新技术,在城市地下管网领域应用越来越广泛。但是地理信息系统在供热管网方面的应用相对较少。目前,国内外关于将地理信息系统应用于其它城市地下管网的研究已经有很多成果。利用其它城市地下管网与地理信息系统结合的应用经验,结合供热管网的特殊性,研究地理信息系统在供热管网中的应用有重要意义。 本文首先通过研究供热管网设计水力计算的理论和方法,应用图论和矩阵理论,建立了供热管网的数学模型。总结了支状管网和环状管网的设计水力计算流程,利用基本回路法对数学模型进行了理论求解。最后通过数值迭代的方法完成了计算机上的求解,并利用Visual C++编程语言编写了程序模块,该模块可以对不同形式的供热管网进行设计水力计算和水力工况分析,如支状和环状管网,单热源和多热源管网。 其次,通过研究地理信息系统二次开发,分析供热管网的结构特点,结合MapGIS地理信息系统的图形操作和空间数据分析功能,利用Microsoft Office Access数据库和MapGIS-SDE空间数据引擎,,建立了供热管网地理信息系统关系数据表和图形文件。之后,研究了GIS的图形操作和空间分析方法,采用遍历算法完成管网的拓扑结构搜索,建立供热管网拓扑矩阵。得到拓扑矩阵后便可以代入水力计算模块进行水力计算。 最后,对比分析供热管网和其他城市地下管网的特殊性,提出在设计水力计算时采用供水管网建立拓扑图进行计算,在工况分析时采用供回水管网建立拓扑图进行计算的方式。在供热管网地理信息系统水力计算功能的基本框架内,进行了其他功能的拓展理论性研究,包括利用GIS对管网进行实时查询、在线监测、管网维护、事故分析等。
[Abstract]:At present, building energy consumption in China is increasing, heating energy consumption in building energy consumption is also increasing. Central heating is the main way of heating in China. It is of great significance to improve the energy efficiency of central heating for building energy conservation in our country. With the increasing of heating area, the heat supply network is developing from single heat source branch network to multi heat source ring pipe network. At the same time, the problems of unreasonable design and serious hydraulic maladjustment have not been solved. Geographic Information system (GIS) is a new technology developed rapidly in recent years, which is widely used in the field of urban underground pipe network. But the application of GIS in heating network is relatively few. At present, there have been a lot of achievements in the application of GIS to underground pipe networks in other cities at home and abroad. It is of great significance to study the application of geographical information system (GIS) in heating pipe network based on the application experience of other cities' underground pipe network and geographic information system (GIS) and the particularity of heating network. Firstly, by studying the theory and method of hydraulic calculation in the design of heating network, the mathematical model of heat supply network is established by using graph theory and matrix theory. The design hydraulic calculation flow of branch pipe network and annular pipe network is summarized, and the mathematical model is solved theoretically by the basic loop method. Finally, the computer solution is completed by numerical iteration method, and the program module is compiled by Visual C programming language. The module can be used to design hydraulic calculation and hydraulic condition analysis for different forms of heating pipe network. Such as branch and ring pipe network, single heat source and multi-heat source pipe network. Secondly, by studying the secondary development of GIS, analyzing the structural characteristics of heating network, combining the graphic operation and spatial data analysis function of MapGIS GIS, using Microsoft Office Access database and MapGIS-SDE spatial data engine, The relation data table and graphic file of the heating network GIS are established. Then, the graph operation and spatial analysis method of GIS are studied, and the topology matrix of heating network is established by using traversal algorithm to search the topology structure of the pipe network. The topological matrix can be replaced by hydraulic calculation module. Finally, by comparing and analyzing the particularity of heating network and underground pipe network in other cities, it is put forward that the topology chart of water supply network should be used in the design of hydraulic calculation, and the topology chart of supply and return water pipe network should be used for calculation in the analysis of working conditions. In the basic framework of hydraulic calculation function of heat supply network geographic information system (GIs), theoretical research on other functions has been carried out, including real-time query, on-line monitoring, pipe network maintenance, accident analysis and so on using GIS.
【学位授予单位】:北京建筑大学
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:P208;TU995.3

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