凝汽器喉部流场数值模拟  

Numerical Simulation of the Flow Field in a Condenser Throat

作　　者：张勇[1] 贾昌盛 许衍军[1] Zhang Yong;Jia Changsheng;Xu Yanjun(School of Electrical and Mechanical Engineering,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China)

机构地区：[1]陕西科技大学机电工程学院,西安710021

出　　处：《发电设备》2018年第6期383-386,共4页Power Equipment

摘　　要：对660MW火电机组凝汽器喉部流场进行了研究,分析了低压加热器布置在不同高度和给水泵汽轮机排汽口布置在不同位置对流场的影响。结果表明:凝汽器喉部布置低压加热器及给水泵汽轮机排汽口会造成喉部出口速度分布的不均匀性增加;低压加热器布置在不同高度和给水泵汽轮机布置在不同位置,对喉部出口速度分布的均匀性影响不同。A study was conducted on the flow field in the condenser throat of a 600 MW thermal power unit, together with an analysis on the factors influencing the flow field, such as the height of the low-pressure heater and the location of the steam outlet of boiler feed pump turbine （BFPT）. Results show that when the low-pressure heater and BFPT’s steam outlet are arranged at condenser throat, the non-uniformity of the outlet velocity distribution at that area would be increased. Besides, the uniformity of the outlet velocity distribution could be influenced by both the low-pressure heater arranged at different heights and the BFPT arranged at different locations.

关 键 词：凝汽器 喉部 低压加热器 给水泵汽轮机 排汽口 均匀性 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]