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在室温下,对钠在氮气-水雾混合气氛中的反应作了实验研究。在氮气中水雾含量为0.06g/L,流速为0.5m/s时,其反应速率在0.1～1mm/h内可控;对模拟燃料元件组件及某些不锈钢试样在高达430℃的钠中进行了浸润实验,表明在250℃以下基本不浸润。建立了一个多功能的清洗装置,它由清洗容器、水雾发生循环回路、水冲刷回路、清洗液和真空-气体排放系统组成,对主要参数采用微机采集并实行控制。对CEFR(中国实验快堆)燃料元件组件的模拟件进行清洗获得了满意的清洗效果。
At room temperature, the reaction of sodium in a nitrogen-water mist mixture was investigated. The reaction rate is controlled within 0.1 ~ 1mm / h when the water mist content is 0.06g / L and the flow rate is 0.5m / s in nitrogen gas. For the simulated fuel element assembly and some stainless steel samples, sodium In infiltration experiments showed that the basic non-infiltration below 250 ℃. A multi-functional cleaning device was set up which consisted of a cleaning container, a water mist circulation circuit, a water flushing circuit, a cleaning liquid and a vacuum-gas discharge system. The main parameters were collected and controlled by a microcomputer. The CEFR (China Experimental Fast Reactor) fuel components of the simulation of components to obtain a satisfactory cleaning effect.