期刊论文

Liu, Z.-J.

中文

核动力工程

0258-0926

2012

33

6

139-143

10.3969/j.issn.0258-0926.2012.06.031

本校为第一机构

建立改进型快谱超临界水冷堆(SCFR-M)堆芯模型,探讨点火区燃料棒直径和增殖区水棒直径对堆芯转换比的影响,得到合理的燃料组件设计形式。设计计算6种不同堆芯布置下的增殖特性和空泡反应性,分析燃料组分对堆芯转换比和空泡反应性系数的影响。结果表明:减小氢原子数与重金属原子数之比(H/HM),增加堆芯增殖组件数目并采用合理布置可在满足负空泡反应系数的同时提高转换比;降低燃料中PuO_2质量分数可以使转换比大幅增加,同时使堆芯的空泡反应性系数有更大负值;当点火组件采用PuO_2质量分数为20.8%的MOX燃料,增殖组件采用_(235)U富集度为0.2%的UO_2燃料,方案6的设计可以使堆芯的初始转换比达到1.043...

In this paper, the core mode of improved supercritical water cooled fast reactor is established. At first, reasonable fuel assembly design is obtained by studying the influences of seed fuel pin diameter and blanket coolant channel diameter to conversion ratio (CR). Then, viod reactivity coefficient and CR of six different core arrangements are calculated. Finaly, the influences of fuel components to CR and void reactivity coefficient are analysed. The results show that negative void reactivity coefficient can be satisfied and CR can be increased by reducing Hydrogen to Heavy-metal ratio (H/HM...