超高速断电装置爆炸桥断电实验观测与分析
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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 break -time 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.
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 break -time 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.
引文
[1]李品德,刘军虎,王永红,等．电力系统故障电流限流 器的应用和研究[J]．高压电器,2000,12(3):31- 37．
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[5]贾乃文．粘塑性力学及工程应用[M]．北京:地震出 版社,2000．
[6]康丽霞,王耀华,史长根．内部爆炸载荷下薄壁柱壳 膨胀断裂的研究[J]．爆破器材,2002,31(1):34- 37．
[2] TAYLOR G I. Science papers of Sir G. I. taylorⅢ (44) [C] . London:Cambridge University Press, 1963. 387.
[3] HOGGATT C R, RECHT R F. Fracture behavior of tubular bombs[J]. J App Phys, 1968,39(3):1856.
[4] SHOCKEY D A, SEAMAN L, et al. Material behavior or under high stress and ultrahigh loading rates[ C]. New York and London: Plenum Press, 1983. 273.
[5]贾乃文．粘塑性力学及工程应用[M]．北京:地震出 版社,2000．
[6]康丽霞,王耀华,史长根．内部爆炸载荷下薄壁柱壳 膨胀断裂的研究[J]．爆破器材,2002,31(1):34- 37．
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