摘要
某330 MW火电机组2台机组的凝汽器管束布置结构不同,对凝汽器水侧进行流场模拟。结果表明:4号机组的管束布置方式使得管束入口流场更均匀,实际使用中也发现其胶球系统收球率更好;通过给3号机凝汽器入口水室增加导流板,大幅度提高了3号机凝汽器管束入口截面流体分布均匀程度,降低堵球概率,为仿生双连树型凝汽器改进提供了一定参考。
The two units of a 330 MW thermal power unit have different condenser tube bundles arrangements, and the flow field simulation on the water side of the condenser is carried out. The results show that the tube bundle arrangement of No.4 unit makes the flow field at the inlet of the tube bundle more uniform. It is also found that the ball collection rate of its rubber ball system is better. By adding a deflector to the inlet water chamber of the condenser of the No.3 unit, the uniformity of the fluid distribution in the inlet section of the condenser tube bundle of the No.3 unit is greatly improved,and the probability of ball blocking is reduced. It provides a certain reference for the improvement of the bionic doubleconnected tree condenser.
出处
《节能》
2022年第8期11-13,共3页
Energy Conservation
关键词
凝汽器
数值模拟
传热性能
管束
condenser
numerical simulation
heat transfer performance
tube bundle
