摘要
针对基于回路热管技术的非能动安全壳冷却系统开展瞬态特性试验,根据试验数据分析系统在液柱启动方式下自然循环流量、安全壳压力、流动不稳定性等过渡特性。结果表明:基于回路热管技术的非能动安全壳冷却系统具有良好的启动特性,可实现事故工况下安全壳内热量的顺利导出,且能够在启动阶段实现安全壳压力的快速下降。系统具有流动不稳定性工况区域,其影响因素与冷却水箱温度、安全壳压力及系统输入功率有关,流动不稳定性未对安全壳内压力趋势造成明显影响。
The transient characteristics of containment loop heat pipe cooling system are studied, and the characteristics of natural circulation flow rate, containment pressure and flow instability of the heat pipe cooling systems are analyzed by liquid head start-up based on the experimental data. The results show that the start-up of containment cooling system works well. In accident conditions, such as LOCA or MSLB, the heat of the containment vessel can be successfully transferred out. In the start-up stage, containment pressure drops rapidly, which is good for containment pressure inhibition. Flow instability of the containment cooling system happens under some conditions, which relevant to cooling-tank temperature, containment pressure and input heat power. Flow instability has no obvious effect on the trend of pressure in the containment.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第1期6-9,共4页
Nuclear Power Engineering
关键词
非能动
安全壳冷却系统
液柱启动
瞬态特性
自然循环
Passive, Containment cooling system, Liquid head start-up, Transient characteristic, Natural circulation
