摘要
工程中广泛应用的多孔式管脚在流动特性调节、加工精度方面存在一定缺陷。本文提出了少孔式管脚替代方案,通过水力实验,对比研究了多孔式与少孔式两类管脚的阻力系数分布、流量与压降对应关系等流动特性。结果显示:φ12.0 mm的少孔式管脚与φ6.2 mm的多孔式管脚具有几乎相同的流动特性,均满足设计需求,本文提出的少孔式管脚替代方案可行;少孔式管脚具有更高的流动特性调节效率。本文给出了管脚阻力系数与其结构尺寸间的经验关系式,可供相关实验或工程参考。
The multi-hole entry tube widely used in engineering has some shortcomings in adjustment of flow characteristics and processing accuracy. In this paper, an alternative method of few-hole entry tube was proposed. By hydraulic experiment, the flow characteristics of multi-hole and few-hole entry tubes, such as the distribution of resistance coefficient, the corresponding relationship between flow rate and pressure drop, were compared and studied. The results show that the flow characteristic of the few-hole entry tube with 12.0 mm in diameter is almost the same as that of the multi-hole entry tube with 6.2 mm in diameter, which all can meet the design requirements. It is verified that the alternative method of few-hole entry tube proposed in this paper is feasible. In addition, the flow characteristics can be more effectively adjusted by the few-hole entry tube. Moreover, the empirical correlation between the resistance coefficient of the entry tube and its structure parameters is formulated, which can be used in relevant experiment or engineering.
作者
秦亥琦
陆道纲
司宇
刘少华
唐甲璇
钟达文
QIN Haiqi;LU Daogang;SI Yu;LIU Shaohua;TANG Jiaxuan;ZHONG Dawen(School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China;Beijing Key Laboratory of Passive Nuclear Safety Technology,North China Electric Power University,Beijing 102206,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2019年第7期1288-1295,共8页
Atomic Energy Science and Technology
关键词
快堆燃料组件
少孔式管脚
水力实验
fast reactor fuel assembly
few-hole entry tube
hydraulic experiment