核电汽轮机低压缸中平衡和非平衡凝结流动的对比研究  

Comparative Research on Equilibrium and Non-Equilibrium Condensation Flow in Low Pressure Cylinder of Nuclear Turbines

作　　者：杨建道[1,2] 游玮[1] 李亮[1] 吴晓明 程凯[1,2] 王恭义 余德启 彭泽瑛 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]上海汽轮机厂有限公司,上海200240

出　　处：《热力透平》2013年第1期9-14,共6页Thermal Turbine

摘　　要：采用IF97水蒸汽实际气体性质进行计算,对某核电机组低压缸中的平衡和非平衡凝结流动进行研究,对比分析两者的差异和影响。结果表明:与平衡凝结流动相比,非平衡凝结流动中低压缸叶片表面压力分布、湿度分布、反动度、进出口气流角、各透平级焓降以及低压缸内热力过程线均有明显变化。按照非平衡凝结流动规律设计湿蒸汽透平是提高核电汽轮机效率的一个途径。The equilibrium and non-equilibrium condensation flow state in low pressure cylinder is researched and compared by means of IF97steam property. It indicates that the distributions of pressure on blade surface, wetness fraction, reaction degree, inlet and outlet steam flow angle, and the enthalpy drop of stages along the thermodynamic process change obviously in non-equilibrium condensation flow comparing with the equilibrium one. The wet steam stage design according to the condensation non-equilibrium flow is a feasible method to improve the efficiency of nuclear turbines.

关 键 词：核电汽轮机 低压缸 平衡凝结 非平衡凝结 对比研究 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]