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对华龙一号反应堆堆内构件能量吸收器进行了缓冲性能研究,充分考虑了水力功、堆芯跌落势能、燃料组件压紧弹簧弹性势能和能量吸收器弹塑性变形能间的能量平衡关系,研究了能量吸收器的性能影响因素,推导得出了堆芯跌落高度与能量吸收体长度间的关系、压力容器所受冲击载荷与能量吸收体长度间关系及能量吸收器最大应力与能量吸收体长度间的关系,发现通过减小能量吸收体体积和增大能量吸收体长度能有效降低堆芯跌落对压力容器底封头的冲击。
The energy absorption of energy absorber of Hualong-1 reactor was studied, and the energy balance between hydraulic power, core drop potential, elastic potential energy of the fuel assembly compression spring and elasto-plastic deformation energy absorber was fully considered. The relationship between the height of the core drop and the length of the energy absorber, the relationship between the impact load of the pressure vessel and the length of the energy absorber and the relationship between the maximum stress of the energy absorber and the length of the energy absorber It was found that by reducing the volume of the energy absorber and increasing the energy absorber length, the impact of the core drop on the pressure vessel bottom seal can be effectively reduced.