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研究了发生静态流量漂移时自然循环系统中流量和加热段进出口温度的变化规律及静态流量漂移过程中发生的动态流量振荡现象。研究结果表明 :在发生静态流量漂移时 ,系统循环流量下降、加热段的进口温度下降而出口温度上升 ;当静态流量漂移一段时间后 ,伴随着静态流量漂移 ,系统内同时发生动态流量振荡。在对现象描述的基础上 ,阐述了静态流量漂移发生的机理
The variation of the flow rate in the natural circulation system and the temperature of the inlet and outlet of the heating section when the static flow rate drift occurs and the dynamic flow oscillation phenomenon occurred during the drift of the static flow rate are studied. The results show that when the static flow drift occurs, the system circulation flow rate decreases and the inlet temperature of the heating section decreases and the outlet temperature rises. When the static flow rate drifts for some time, the dynamic flow oscillation occurs simultaneously with the static flow rate drift. Based on the description of the phenomenon, the mechanism of static flow drift is expounded