青岛市某小区的供暖系统 毕业设计说明书.doc

摘 要 本次毕业设计的课题为青岛市某小区的供暖系统，包括供热外网和换热站的设计。3741.3kW。小区换热站以饱和蒸汽为一次热媒，采暖供回水温度为95/70℃。首先，根据设计题目搜集资料，供热系统的相关集中供热系统枝状管网的、热负荷的计算、热媒的选择及其参数的确定。，供暖系统的特点提出合理有效的运行调节方法关键词：换热站运行调节Abstract This is a heating system design about one district in Qing Dao Caty, which includes outdoor heating pipe network and heat transfer station. The district contents residence building and business building, the total constructiong area is about 78730 m2 and heat load is about 3741.3kW. In the heating system, the heat transfer station which takes staturation Steam as high temperature heat medium and 95/70 ℃water circulating water as heat-supplying-medium. Firstly, needing to collect some information basis the design subject, and confirming the correlation scheme about the heating system. It contents the option of the concentrate heating system, the confirming of branch pipeline network, the calculate of the heating system, the choosing of heat medium and its parameter. Secondly, putting up the design about the outdoor heating pipe network. It contents the laying of pipe, defining the position and number of the accessories such as fixed supports, valve wells and compensators, the defining of the pipeline, the hydraulic computation of the pipeline . Through the hydraulic computation, we can confirm the diameter of the pipling and the pressure lossing, computing the hydraulic unbalance rate in order to make the hydraulic balance on every pipling. Then, the process of heating medium flow is determined. After the type of heat exchanger, water circulating pumps and make-up water pumps are chosen; they and the pipelines among them are arranged rationally. Also, the hydraulic computation of internal heat transfer station shouid be workouted to meet the need of every pipling. Finally, according to the characteristic of the heating system, a reasonable and effective operation and regulation method should be proposed. Keywords: outdoor heating pipe network; heat transfer station; hydraulic calculation; opera