1、山东科技大学学生毕业设计（论文） 1 摘摘 要要 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。该小区包括住宅楼与商业用楼，总建筑面积为 78730m2，热用 户计算热负荷为 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，确定供热系统的相关方 案。包括集中供热系统的选择、枝状管网的确定、热负荷的计算、热媒的 选择及其参数的确定。然后，进行小区供热外网的设计。包括管道的敷设、 管网中固定支架、阀门井、补偿器等附件的位置与数量的确定，管道的保 温，管网的水力计算。通过水力计算确定管网的管径以及压力损失，并进
2、 行不平衡率的计算，尽量使每段管线都能达到水力平衡。接着，确定换热 站系统流程；对换热器、循环水泵、定压水泵等主要设备进行选型计算； 合理布置所有的设备以及它们之间的管道。同样，还要对换热站内部进行 水力计算以求得各种管路的管径。最后，根据设计的供暖系统的特点提出 合理有效的运行调节方法。 关键词关键词： 供热外网；换热站；水力计算；运行调节 山东科技大学学生毕业设计（论文） 2 Abstract This is a heating system design about one district in Qing Dao Caty, which includes outdoor heating
3、 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
4、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 pos
