摘要
建立了燃料棒轴向不同位置偏离泡核沸腾比(Departure from Nucleate Boiling Ratio,DNBR)的计算模型,研究分析了一回路冷却剂温度对DNBR的影响。针对超温、超功率ΔT保护触发安全级仪控系统执行紧急停堆功能,避免发生偏离泡核沸腾(DNB)展开了研究。研究了安全级仪控系统的驱动信号、控制逻辑,明确了安全级仪控系统在避免反应堆偏离泡核沸腾的堆芯保护功能。为进一步分析事故工况下安全级仪控系统的保护作用奠定了基础。
This paper established the model of Departure from Nucleate Boiling(DNB). The impact of the primary coolant temperature on departure from nucleate boiling was analyzed. Over-temperature, over power protection ΔT trigger class 1E instrumentation and control system(class 1E IC) to perform scram to avoid DNB. Then the drive signal and control logic were studied. The protection of 1E IC for reactor to avoid DNB was understanded clearly..
出处
《电气技术》
2015年第10期21-26,共6页
Electrical Engineering
关键词
偏离泡核沸腾
超温、超功率ΔT保护
安全级仪控系统
departure from nucleate boiling(DNB)
ΔT over-temperature/over-power protection
class 1E instrumentation and control systems(1E I&C)