某滨海核电厂基于降低取水口卷吸效应的取水方案优化研究  

Optimization of water intake scheme based on reducing entrainment effect of water intake in a coastal nuclear power plant

作　　者：何小奇 HE Xiaoqi(China Nuclear Power Design Co.,Ltd.CI&BOP Engineering,Shengzhen,51800)

机构地区：[1]深圳中广核工程设计有限公司,深圳51800

出　　处：《给水排水》2024年第S1期615-622,共8页Water & Wastewater Engineering

基　　金：国家自然科学基金(52079149)

摘　　要：近年来我国滨海核电厂频繁发生海生物入侵,导致电厂跳机跳堆的冷源事件发生,核电厂对于取水冷源安全重视度已显著提高。本文介绍了某滨海核电厂为了降低取水口海生物卷吸效应对核电厂取水影响,结合厂址潮流特性、海底地形地貌对取水口导流堤及口门朝向布置进行优化,并开展多方案取水口流场卷吸数值模拟专题研究。通过研究,合理统计从取水口进入明渠内的质点流线,进而计算出不同取水口布置方案的卷吸率,最后选择了卷吸效应影响最小的优化方案,从而实现工程方案取水口的避、导功能,降低了该核电厂取水口卷吸效应。本文介绍的降低取水口卷吸效应的研究方法和对取水口导流堤优化思路,可对大多数同类滨海核电厂取水口优化,降低取水口卷吸效应提供重要的参考意义。In recent years,marine biological invasion frequently occurred in China's coastal nuclear power plants,which led to the cold source event of reactor trip.Nuclear power plants have paid more attention to the cold water safety of water intake.In order to reduce the impact of marine organisms entrainment effect on the water intake of coastal nuclear power plant,in the feasibility study phase,the layout of the water intake was compared and selected by multiple schemes,combined with the tidal current characteristics of the plant site,the seabed topography,the diversion dike of the water intake in geomorphology,Analog and the orientation layout of the entrance were optimized,and the entrainment value of the water intake flow field in numerical modelling was studied.After the construction of the Analog scheme in Analog,the sea flow field near the water intake was set up,and the marine biological explosion points at different positions in the sea area were set up.The biological explosion characteristics of Analog and Analog were used to drop particles once and continuously,and then the particles were tracked and counted reasonably.Then,the entrainment rate of different water intake layout schemes is calculated,and finally the optimization scheme with the minimum influence of entrainment effect is selected,so as to realize the avoidance and guidance functions of the water intake of the engineering scheme and reduce the entrainment effect of the water intake of the nuclear power plant.The research method of reducing entrainment effect of water intake and the idea of optimizing diversion dike of water intake introduced in this paper can provide important reference significance for optimizing water intake and reducing entrainment effect of water intake in most similar coastal nuclear power plants.

关 键 词：滨海核电厂 冷源 取水口优化 取水口卷吸 

分 类 号：TU991[建筑科学—市政工程]