科技视界
科技視界
과기시계
Science&Technology Vision
2015年
25期
5-7
,共3页
自然循环%流量丧失%冷却驱动压头丧失
自然循環%流量喪失%冷卻驅動壓頭喪失
자연순배%류량상실%냉각구동압두상실
Natural circulation%Loss of flow%Loss of cooling-driven head
在SG二次侧排热减小类事故工况下，若反应堆初始以自然循环状态运行，当破损SG二次侧排热丧失时，受影响环路流量可能完全丧失，对事故缓解及核电厂安全带来不利。本文对上述工况下的环路自然循环特性进行了研究，通过理论分析得到了不同环路自然循环流量的特性及主要影响因素，并通过模拟计算得到了不同冷却速率工况下环路自然循环流量数据，最后对核电厂制定相关应对措施方面提出了建议。
在SG二次側排熱減小類事故工況下，若反應堆初始以自然循環狀態運行，噹破損SG二次側排熱喪失時，受影響環路流量可能完全喪失，對事故緩解及覈電廠安全帶來不利。本文對上述工況下的環路自然循環特性進行瞭研究，通過理論分析得到瞭不同環路自然循環流量的特性及主要影響因素，併通過模擬計算得到瞭不同冷卻速率工況下環路自然循環流量數據，最後對覈電廠製定相關應對措施方麵提齣瞭建議。
재SG이차측배열감소류사고공황하，약반응퇴초시이자연순배상태운행，당파손SG이차측배열상실시，수영향배로류량가능완전상실，대사고완해급핵전엄안전대래불리。본문대상술공황하적배로자연순배특성진행료연구，통과이론분석득도료불동배로자연순배류량적특성급주요영향인소，병통과모의계산득도료불동냉각속솔공황하배로자연순배류량수거，최후대핵전엄제정상관응대조시방면제출료건의。
If the decrease in heat removal by SG secondary side accident occur at the time when the plant is operated at natural circulation condition, the flowrate of the affected loop may be totally lost when losing of the ability that heat removed by secondary side of the broken SG, which will bring disadvantages to the accident mitigation and the plant safety. In present work, the natural circulation characteristics under the condition mentioned above was studied and the disciplinarian and the main impacting factors of the flow evolution of both affected and unaffected loop was gained theoretically. Some calculations had been performed, which given the loop flowrate data for different cooling velocities. Finally, some proposals about the responses should be taken by the plant under such situation was given.
