核电汽轮机侧齿汽封流动特性的数值研究  

Numerical Simulation of Flow Characteristics about Lateral Tooth Steam Seal on the Turbine of Nuclear Power Plant

作　　者：李子超[1,2,3] 周涛[1,2,3] 马栋梁[1,2,3] 刘亮[1,2,3] 盛伟[4] 

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]华北电力大学核热工安全与标准化研究所,北京102206 [3]非能动核能安全技术北京市重点实验室,北京102206 [4]沈阳工程学院,沈阳110136

出　　处：《汽轮机技术》2017年第4期277-279,共3页Turbine Technology

基　　金：中央高校基本科研业务专项资金项目(项目编号:2014BJ0086);国家重点实验室开发课题(项目编号:2014BJ0041)

摘　　要：核电站汽轮机汽封系统的蒸汽泄漏量对电厂经济性有重要影响,采用数值求解方法,用有限体积法对控制方程进行离散,并求解湍流模型的封闭方程组,分析了核电厂汽轮机上不同形式侧齿汽封的流动特性和泄漏情况。结果表明:在不同的进口压力下,单低齿侧齿汽封的泄漏量低于双低齿侧齿汽封的泄漏量,有底齿的双低齿侧齿汽封和单低齿侧齿汽封的泄漏量都略高于没有底齿的。为优化核电厂二回路汽封系统提供了理论参考。The leakage rate of the turbine steam seal system have an important impact on the economy of the nuclear power plant. Control equations are dissociated by the finite volume method, and the closed turbulence model equations are solved, and the different forms of flow characteristics and leakage condition in lateral tooth seal in turbine of nuclear power plant are analyzed by using numerical methods. The results show that the leakage rate of the lateral tooth steam seal with a single low tooth is less than that of the lateral tooth steam seal with double low teeth under different import pressure. And the leakage rate of the lateral tooth steam seal with a single low tooth or double low teeth and bottom teeth are slightly more than those without bottom teeth. It provides theoretical reference for optimizing the steam system of the second loop on the nuclear power plant.

关 键 词：核电厂 汽轮机 侧齿汽封 泄漏量 经济性 

分 类 号：TK113[动力工程及工程热物理—热能工程]