摘要
ITER聚变装置在运行过程中会产生大量的灰尘,当发生事故冷却水进入时,与热的灰尘发生反应产生氢气。氢气聚集后可能会燃烧甚至爆炸,对装置产生破坏。运用CFD的方法对"Wet Bypass"事故后反应产生的氢气风险进行了分析评价,得出在事故的初始阶段氢气达到了燃爆的风险,不同流量的冷却水泄漏进入真空室内会带来不同的氢气风险强度,在冷却水进入量十分大的情况下会惰化灰尘产生的氢气风险。并对注入二氧化碳惰化真空室气体空间的措施进行了分析,在事故发生的初期以较大速率充入二氧化碳能够降低氢气带来的风险。
A lot of dust will be generated during ITER operation, and hydrogen will be produced by the interaction of hot dust with water in the case of coolant ingress accident. The accumulated hydrogen will bring risk of combustion and explosion, which will damage the device. CFD method has been used to analyze the produced hydrogen in ＂wet bypass＂ scenario, and come to the results that hydrogen will burn and explode at the beginning of the accident, different hydrogen risk will be brought by different coolant leakage, and hydrogen risk will be inert if the leakage is massive. Injecting CO2 to inert the vacuum vessel has also been discussed, the risk of hydrogen will be suppressed by injecting CO2 with a large rate at the beginning of accident.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
2012年第1期70-75,共6页
Nuclear Fusion and Plasma Physics
基金
国际热核聚变实验堆(ITER)计划专项(2009GB106006)
