SF_6示踪检测大型容器的动态泄漏  

Dynamic leakage test of a voluminous container using SF_6 gaseous tracer

作　　者：羊衍秋[1] 杨通在[1] 郝樊华[1] 罗顺忠[1] 何玉晖[1] 姜涛[1] 杨亮[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《核技术》2010年第4期312-315,共4页Nuclear Techniques

摘　　要：SF6示踪技术是大型容器动态密封检测的有效方法。采用SF6示踪技术检测了一个9m3大型容器在内部炸药爆炸后各密封部位的气体泄漏率。介绍了泄漏检测实施技术,采用Kr为第二示踪剂,用以指示SF6示踪剂的爆后燃烧损失。结果表明,各检测部位的气体泄漏主要发生在爆后短时间内,泄漏率随时间的延长呈指数衰减,29h后基本平衡在10–12–10–13L/h的泄漏水平;炸药爆炸冲击波是气体泄漏的主要原因,爆后密封材料和机械密封结构基本未遭到破坏。SF6 gaseous tracer is an effective technology for airtight test of voluminous containers. In this work, with SF6 gaseous tracer, the dynamic leakage of a voluminous inter-explosion container was tested. Kr was selected to indicate the loss of SF6 caused by the explosion-caused high temperature. The results showed that the gas leakage for various airtight points occurred a short time after explosion, and attenuated rapidly with time by exponential order to the stable leavl of 10^-12-10^-13 L/h in 29 hours after the explosion. As a result, the shock wave was considered as the chief matter responsible for gas leak. The material and mechanical structures for airtightness were not damaged.

关 键 词：泄漏检测 示踪技术 气体示踪剂 SF6 

分 类 号：TL281[核科学技术—核燃料循环与材料] N206[自然科学总论]