Igniter without conventional delay mechanism

Abstract

The invention discloses an igniter without a conventional delay mechanism. The igniter comprises a shell, a stab cap, a spring, a firing pin, one-pass ignition powder charge, second-pass ignition powder charge, one-pass nitrocotton (nanoscale metal aluminum powder and nanometer boron powder which are mixed according to a certain proportion), second-pass nitrocotton and the like. The igniter is characterized in that the ignition strength of the nitrocotton is improved by utilizing metal activity of the nanoscale boron powder and aluminum powder, thus the nitrocotton with the low sensitivity, the cap and the like constitute a firing mechanism of the igniter, stability of the firing mechanism is improved (the specially-made nitrocotton has already approached to performance of a traditional priming explosive in an experiment), and ignition powder such as black powder, potassium borate / potassium nitrate, potassium picrate / potassium perchlorate and the like can be stably stimulated; a special charge structure can ensure that the nitrocotton is prone to being subjected to a deflagration reaction; and the combustion time of the second-pass nitrocotton is utilized to serve as the delay timeof the igniter, the delay time and the mass of the adopted second-pass nitrocotton is in direct proportion, and the delay mechanism in a traditional inertial igniter is omitted.

Description

technical field [0001] The invention relates to an igniter in the field of pyrotechnics, in particular to an igniter without a conventional delay mechanism, and belongs to the field of pyrotechnics. Background technique [0002] At this stage, my country's weapon systems generally require igniters with instant or delayed functions. Instant ignition has a relatively mature technology in China. In the field of detonating materials, the delay effect is generally achieved through fuses, detonating cords, mechanical delays, chemical delays, and electronic delays. In a weapon system, a delay mechanism (delay drug) is generally used to achieve a delay effect subject to conditions. With the development of weapon systems, the performance requirements for pyrotechnics are further improved, but as far as pyrotechnics are concerned, their essential instability still exists. [0003] For the delayed drug, although the gas-free delayed drug is used at this stage, there is still gas due...

AI Technical Summary

Problems solved by technology

At present, the traditional priming agent is mostly dinitrodiazophenol (DDNP), which has the advantages of high detonation sensitivity, rapid detonation growth, and high detonation velocity. However, DDNP has high mechanical sensitivity and poor pressure resistance. 3 In addition, the friction sensitivity of DDNP is the lowest among commonly used primary explosives. In addition, every kilogram of DDNP produced produces about 150-250 kilograms of industrial wastewater, and the wastewater also has certain toxicity.

Although there are many problems in the above-mentioned medicaments, there is no better primer to replace the above-mentioned medicaments at present.

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