600mw机组热力部分局部初步设计毕业论文.doc

沈阳工程学院毕业设计（论文）  PAGE 49 摘要 本次设计为装有中间在热机组凝汽式600MW火力发电厂热力系统局部初步设计，其主要内容包括了电厂原则性热力系统的计算、拟定、热力系统辅助设备的选择；锅炉燃烧系统及其设备的选择；供水方式的确定和水泵的选择等。电厂原则性热力系统的计算为本次设计的设备选型提供了数据，其汽水流量的计算是选择给水泵、凝结水泵、除氧器等设备的台数和容量的依据。而对于热力系统设备的选型则是火电厂可行性研究及初步设计中热机部分的主要内容，又是运行电厂中组织经济运行的主要技术依据。热力系统设备的选型提供了全厂热力系统的基本结构，提供了全厂主要的主、辅热力设备规格。通过本次设计应达到能够熟练并掌握电厂的热力系统及系统设备的连接方式和运行特性，能把书本知识和现场实际结合起来，能培养独立思考和查阅文献资料及综合运用所学知识的能力。本次设计以安全经济为原则，最终选择出合适的电厂设备 [关键词] 600MW火力发电厂 初步设计 原则性热力计算 设备选型 Abstract This preliminary design is for the portion of thermal power plant of 600MW condensing intermediate reheat unit, the main content include the calculation and drawing of the principle thermal system and the selecting of the water supplying and the selecting of the water supplying and the choice of water pump,ect. This calculation of thermal system provide the date for the equipment selecting in this design . The calculation of the steam flow is prepared for selection of the account and capacity to the feedwater pump, condensate pump deoxidize device . The selection of the thermal system equpment is the mian content of the feasibility research of power palant and heat engine in oreliminnary designing and it’s also the main technipue base of economic in the power plant.The composition of thermal system and standards of the main and auxiliary thermal equipment is decided by the selecting of thermal. It is requseted that we should master the designed prograne of thremal system in the power plane and master the content of designed calculating and equpment selecting in this design.And can be familiar with conbine book knowledge and scene together actually,can train the ablity to think independently and consulting the documents and materials and using the knowledge studied synthetically. This Design take safe economy as the principle, choose to offer the suitable power plant equipment finally. [Keywords] 600MW thermal power plant preliminary design principle calcuation of thermal system Selecting type of the equipment 引言 本次设计