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在核反应堆中 ,防止放射性尘埃随空气泄漏的核空气净化系统的小室内气流如果不均匀 ,会导致系统效率检测失效 ,造成严重后果。该文介绍了小室内气流流场均匀性的实验研究过程 :实验台的搭建、所研究的工况及测量手段等。针对有 3台过滤器的过滤小室 ,对不同工况和整流器整流角下的流场均匀性进行了分析 ,得出如下结论 :1 )没有整流器时 ,过滤器的整流效果很好 :没有过滤器的小室气流很不均匀 ,仅有一级过滤器的气流均匀性已有明显改观 ,经两级过滤器后的气流则很均匀 ;2 )整流器对流场的整流作用明显 ,而且必然能找到满足气流均匀性的整流角 ;3)整流器对有两级过滤器的气流影响很小。
In nuclear reactors, non-uniform airflow in a small interior of a nuclear air purification system that prevents radioactive dust from leaking with air can lead to inefficiencies in system efficiency testing with serious consequences. In this paper, the experimental research process of uniformity of flow field in indoor air is introduced: the construction of the test bench, working conditions and measurement methods studied. Aiming at the filter chamber with 3 filters, the flow field uniformity under different working conditions and rectification angle of the rectifier is analyzed. The conclusions are as follows: 1) Without the rectifier, the rectification of the filter is very good: no filter Of the chamber air flow is very uneven, only a filter air flow uniformity has been significantly improved, after two filters after the air flow is very uniform; 2) rectifier rectification of the flow field is obvious, and will inevitably find to meet the air flow Rectifier angle of uniformity; 3) Rectifier has little effect on airflow with two stages of filters.