1000MW级空冷机组给水泵配置选型探讨  

Discussion about Feed Pump Configuration and Selection of 1 000 MW Class Air-Cooled Unit

作　　者：王坚[1] 

机构地区：[1]中南电力设计院,武汉市430071

出　　处：《电力建设》2007年第6期41-44,共4页Electric Power Construction

摘　　要：通过年费用法比较了汽动给水泵和电动给水泵方案的经济性,对于建设2×1000MW超超临界空冷机组,汽动给水泵方案比电动给水泵方案的年费用低4592万元,热经济性更好;厂用电比电泵方案少90270kW,能增加电厂的供电量。推荐采用2×50%容量的汽动给水泵+1×25%容量电动定速启动泵;给水泵小汽机设置单独的湿冷凝汽器。In this paper, the economy of turbine-driven feed pump and electric feed pump are compared using annual cost method. Results show that for 2×1 000 MW air-cooled ultra supercritical units, the annual cost of turbine-driven feed pump is 45.92 million Yuan cheaper than that of electric feed pump resulting in better thermal economy, and the auxiliary power consumption is 90 270 kW less than that of electric feed pump meaning higher electric power output. It also recommends that 2×50% turbine-driven feed pump plus 1×25% capacity constant speed electric startup pump should be used, and a small steam turbine for feed pump should be equipped with a separate wet condenser.

关 键 词：1 000 MW级空冷机组 汽动给水泵 电动给水泵 技术经济比较 年费用 

分 类 号：TK223.52[动力工程及工程热物理—动力机械及工程]