AP1000波动管内空气-水液泛特性试验研究

Experimental Investigation on Flooding of AP1000 Pressurizer Surge Line

在室温及常压条件下以空气-水为工质,对AP1000稳压器不同液位下的波动管内液泛过程及液泛特征点进行了试验现象研究、机理分析和数据分析,得到两相逆流液泛动态特性。研究结果表明:波动管竖直管部分是最容易发生液泛现象的位置;波动管内液泛特性符合Kutateladze关系式;当气体流量较小时,液相流量随着稳压器液位的增高而减小;当气体流量较大时,液相流量随着稳压器液位的增高而增大;液体完全滞止点基本与稳压器液位高度无关。

With air-water as working fluid, the tests of flooding in AP1000 surge line are conducted at atmospheric pressure and room temperature with different dimensional water levels in the pressurizer simulator. Mechanism analysis is performed on the flooding phenomena and data, and their dynamic nature has been captured. The research result shows that, flooding is most likely to transpire on the vertical part of the surge line, flooding characteristic coincides with the Kutateladze relation, the water flow rate decreases as the pressurizer simulator water level increasing in small gas flow conditions, the water flow rate increases as the pressurizer simulator water level increasing in large gas flow conditions, and zero water penetration point is almost independent of the pressurizer simulator water level.