GIS下供热管网的设计模型与水力工况分析
[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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