1、 - I - 青海西宁青海西宁地区地区 2.8MW2.8MW 燃煤燃煤热水锅炉设计热水锅炉设计 摘要摘要 锅炉作为一种能源转换装置被广泛地研究和运用,本次设计任务是设计 一台型号为 SHL2.8-1.0/95/70-A的热水锅炉,适用于在海拔海拔 20200000 米米西宁西宁地地 区区的区域性供暖和供热。 在锅炉设计过程中主要进行了锅炉的技术、经济分析,锅炉整体结构 布置,热力计算,强度计算和烟风阻力计算,相应的设计图纸,以及英文 文献翻译。 该锅炉为双锅筒横置式自然循环锅炉,炉膛四周布置水冷壁。由于锅炉 在高海拔地区运行,为了保证炉膛中持续和稳定地燃烧,采用高而短的前拱 和低而长的后拱。加
2、高炉膛,以适应海拔 2000 米地区的运行。在炉膛之后 设有燃尽室。上下锅筒之间布置密集的对流锅炉管束,为主要受热面。尾部 烟道布置省煤器,以利用锅炉尾部烟气的热量加热给水降低排烟温度,提高 锅炉效率。燃烧设备为链条炉排,燃料为三类烟煤,其低位发热量为 22211KJ/kg。 锅炉主要数据如下: 锅炉效率 75.91% 排烟温度 165 燃料耗量 0.1461kg/s 辐射受热面积 18.02m 2 对流受热面积 171.74m 2 额定供热量 2.8MW 炉排面积 6.36m 2 关键词关键词 热水锅炉;海拔 2000 米;双锅筒横置式自然循环 - II - Design for the w
3、ater boiler operating at xining Abstract Boiler used as one of the important facilities that transform one form of energy into another is studied extensively and used widely. The theme of this document is to design a water boiler used in lanzhou, whose type is SHL4.2- 1.0/95/70-A. This kind of boile
4、r is suitable for the regional heating and heating of the area that suitable for having an elevation of 2000 metrs. In the process of boiler design,i chiefly carried the feasible analyses of technology、economic、the overall structure collocation of boiler、heating power calculation、intensity calculation 、 gas-air resistance calculation、the design for drawing paper as well as English translation. This boiler is double-drum natural circulation boiler, around the furnace are fixed