内陆核电站汽轮机选型及冷端优化  

Type Selection and Cold-end Optimization of a Steam Turbine in an Inland Nuclear Power Plant

作　　者：罗必雄[1] 陈娟[1] 朱光宇[1] 龙国庆[1] 

机构地区：[1]广东省电力设计研究院,广东广州510663

出　　处：《热能动力工程》2011年第2期158-161,251,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：电站冷端优化的目的是从成本与收益方面综合考虑,确保在机组整个寿命期内获得最大效益。汽轮机、凝汽器、冷却塔及相关系统的设置影响成本,不同汽轮机排汽面积、凝汽器换热面积、冷却塔面积对应着不同的年发电量,只有合适的设计背压才能确保机组在电站整个寿命期内效益最大化。本研究根据内陆某核电站的厂址条件,通过对汽轮机排汽面积的计算、凝汽器换热面积的选择、冷却塔及循环水系统的设计,对该核电站汽轮机进行选型,并对冷端进行全面优化设计,最后确定凝汽器的最佳设计背压及冷却塔面积,确保机组在计算寿命期内获得最佳效益,可供同类型电站设计参考。Cold-end optimization of power plants has its intentions to secure a maximal profit in the whole service life of the units.The cost and income should be taken into account comprehensively.The configuration of steam turbines,condensers,cooling towers and related systems exercise an influence on the cost.Different steam turbine exhaust areas,condenser heat exchange surface areas and cooling tower surface areas correspond to different annual power generation capacities.Only a properly designed back-pressure can guarantee the units to obtain a maximal benefit in the whole service life of a power plant.According to the plant site conditions of an inland nuclear power plant,through a calculation of exhaust areas of steam turbines,selection of heat exchange surface areas of condensers and design of cooling towers and circulating water systems,the types of the steam turbines were chosen and a comprehensively optimized design of the cold end was performed of the above-mentioned nuclear power plant.The optimum design back-pressure of the condensers and the cooling tower area were finalized to guarantee the units to obtain an optimum benefit in the calculated service life period.The foregoing can offer reference for design of power plants of the same type.

关 键 词：核电站 汽轮机选型 冷端优化 

分 类 号：TK26[动力工程及工程热物理—动力机械及工程]