1000MW机组凝汽器水侧胶球清洗三维数值模拟及结构优化  

3D Simulation and Structure Optimization on the Condenser Water-side Rubber Ball Cleaning System of a 1000MW Unit

作　　者：付文锋[1] 张娜 刘康[1] 王蓝婧[3] 周兰欣[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,河北保定071003 [2]国电廊坊热电有限公司,河北廊坊065000 [3]华北电力大学控制与计算机工程学院,河北保定071003

出　　处：《动力工程学报》2017年第4期279-284,共6页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51606066);中央高校基本科研业务费专项资金资助项目(2014MS109;2014MS135)

摘　　要：以某1000MW机组凝汽器为研究对象,应用Fluent软件对投运胶球清洗系统时的水室流场和胶球运动轨迹进行了数值模拟.结果表明:胶球的运动轨迹在水室内变化很大,部分管束区的胶球出现汇集,造成管束不通畅,影响了对管束的清洗效果;通过在入口管板上加装弧形凸起扣板,胶球在管束内分布变得均匀;当凸起扣板厚度取0.15m时,凝汽器的总体传热系数可以提高约4.4%.Taking the condenser in a 1 000 MW unit as an object of study, the water chamber flow field and rubber ball trajectories were simulated with the help of software Fluent during operation of the rubber ball cleaning system. Simulation results show that the rubber ball trajectories change a lot in the water cham- ber and the rubber balls agglomerate partly in the tube bundle, which causes blocked water flow and inefficient cleaning effect. The distribution of rubber balls becomes uniform in the tube bundle when curved buckles are added on the inlet tube sheet. When the thickness of curved buckles is 0.15 m, the total heattransfer coefficient of condenser would be increased by 4.4 %.

关 键 词：凝汽器 胶球清洗 数值模拟 传热系数 

分 类 号：TK264.1[动力工程及工程热物理—动力机械及工程]