摘要
研制了一种超高速断电爆炸桥装置,可以实现对大电网的微秒级切断.重点研究了爆炸桥柱壳结构在内部爆炸载荷下动态破裂的过程,通过SEM实验、闪光X光射线摄影实验以及理论分析,得出了爆炸桥的变形规律和断电机理,并通过分析计算得到了爆炸桥的断电时间,理论计算与实验结果非常吻合.最终通过参数优化,确定了1KA超高速断电爆炸桥的最优结构.研究结果表明此爆炸桥断电时间仅为大约50微秒.此研究为此类断电装置爆炸桥的产品系列化研究奠定了良好的基础.
A type of turn - off installation, explosive bridge, which can break a large power network within microseconds, is studied. The work is focused on the dynamic fracture process of an explosive bridge cylindrical shell under an inner explosion load. The deformation rule and turn - off mechanism of explosive bridge is obtained through SEM fractography, an X ray photography experiment and theoretical analysis. The breaktime of explosive bridge is derived through calculation and the calculation result tallies well with the experiments. Finally, the best structure of a 1KA super - high speed explosive bridge is determined through parameter optimizing. The research results show that the break - time of the bridge is only about 50μs. A good foundation for a product serialization study of this type of explosive bridge is established.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2005年第6期623-626,共4页
Materials Science and Technology
关键词
超高速
爆炸桥
柱壳
爆炸载荷
断电时间
super - high speed
explosive bridge
cylindrical shell
explosion load
break - time