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一、雷管的一些重要特性在开路情况下(即在雷管的桥丝断开之后),通过雷管引火头的电压不得大于50伏(该数字考虑了安全系数。有限的试验表明,雷管承受电压约大于80伏时,弧击穿时而发生,大于90伏时,弧击穿连续发生)。大于该值时,在雷管管体和桥丝或引火装置的金属片之间就很可能出现电弧。若电源有一限时断电装置,譬如4毫秒,该现象就不会发生。否则,电弧将在延期雷管管壁上穿孔,导致雷管拒爆或原定延发期不起作用。应该注意到:在引火头附近,延发药燃烧期间产生的离子态气体促成了弧击穿的发生;雷管管壁在延发药燃烧期间击穿会使得燃烧压力突然降低,从而影响燃烧速度或完全使燃烧停止。标准的1类雷管,如诺贝尔炸药有限公司所制
First, some important characteristics of the detonator In the open case (that is, after the detonator of the bridge broken wire), through the detonator head voltage should not exceed 50 volts (the figure to consider the safety factor. Limited test shows that the detonator withstand voltage about Above 80 volts, arc breaks occur from time to time, with arc breaks occurring more than 90 volts). Above this value, arcing is most likely to occur between the torch body and the bridge or wire piece of the igniter. If the power has a limited time power-off device, such as 4 milliseconds, the phenomenon will not happen. Otherwise, the arc will perforate the wall of the detonator, detonating or detonating the detonator will not work. It should be noted that near the pilot burner, the ionic gas generated during the combustion of the extension drug causes the occurrence of arc breakdown; the breakdown of the tube wall of the reactor during combustion of the primer causes a sudden drop in the combustion pressure, which in turn affects the rate of combustion or Completely stop burning. Standard Class 1 detonators, such as Nobel Explosives Co., Ltd. made