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介绍了安全壳冷却系统的自然循环能力计算程序,并详细叙述了AC-600安全壳导流板下端空腔的流场特性及阻力特性实验。流场测量采用激光多普勒测速仪。实验分三种工况进行:(1)不加导流片;(2)加月牙形导流片;(3)加圆柱面形导流片。实验结果证明加装导流片后能明显改善流场特性、减小阻力,进而提高整个系统的自然循环能力。
The calculation program of the natural circulation capacity of the containment cooling system is introduced. The flow field characteristics and resistance characteristics of the lower end cavity of the AC-600 containment baffle are also described in detail. Flow field measurement using a laser Doppler velocimeter. The experiment is divided into three working conditions: (1) without deflector; (2) plus crescent-shaped deflector; (3) plus cylinder-shaped deflector. Experimental results show that the installation of the guide plate can significantly improve the flow field characteristics, reduce resistance, and thus improve the natural circulation of the system capacity.