低参数直流蒸汽发生器稳定性实验研究

针对核供热堆的低温、低压运行条件，建立了大盘管直流蒸汽发生器热工水力学实验系统，实验研究了低参数条件下入口流动阻力、运行负荷和蒸汽发生器出口压力对直流蒸汽发生器稳定性的影响。结果表明：入口节流阻力比、运行负荷、系统压力对直流蒸汽发生器稳定性有影响，通过调整入口节流阻力比，直流蒸汽发生器可在低压参数下稳定运行。

Experimental Investigation on Once-Through Steam Generator Stability Under Low Thermal Parameter

According to the operation condition of nuclear heating reactor,the thermal hydraulic experimental system for steam generator instability was set up,and experiments on steam generator instability under low pressure were carried out in this system,including the effect of flow resistance at the steam generator inlet,operation load and the steam pressure at steam generator outlet on the instability of the steam generator.The experimental results show that the thermal resistance ratio at inlet of the system,operation load and the system pressure have affection on the stability of once-through steam generator,and the once-through steam generator can be stably operated under low parameter condition by setting up suitable thermal resistance ratio at inlet of the system.