论文部分内容阅读
１０ＭＷ高温气冷实验堆（ＨＴＲ１０）堆芯出口冷却剂温度（平均７００℃）径向分布很不均匀，若不使之均匀化，将造成蒸汽发生器部件上过大的热应力。设置在堆底反射层中的堆芯出口热气联箱的作用之一是使冷却剂氦气在其中得到充分的热混合。本文描述了在比例模型上对四种混合元件结构进行的性能对比试验。试验结果表明，热气联箱若只是空腔，则其混合性能很差；置入不同型式的混合元件能在不同程度上提高混合度。加装组合隔板式混合元件，混合度达到９４％以上，能够满足ＨＴＲ１０工程设计的要求。
The radial distribution of the coolant temperature at the outlet of the core of the 10MW HTR-10 reactor (average 700 ℃) is very uneven. If it is not homogenized, it will cause excessive thermal stress on the steam generator components. One of the roles of the core outlet hot gas header disposed in the bottom reflector layer is to achieve sufficient thermal mixing of the coolant helium therein. This article describes a performance comparison test of four hybrid element structures on a proportional model. The experimental results show that, if only the cavity of the hot gas header, the mixing performance is very poor; placing different types of mixing elements can improve the degree of mixing to different extents. The installation of composite baffle mixing elements, the degree of mixing of 94% or more, to meet the HTR 10 engineering design requirements.