Electric detonator ignition device without sensitive initiating explosive device drug

Abstract

The invention provides an electric detonator ignition device without a sensitive initiating explosive device drug. The electric detonator ignition device comprises a shell and an inner core covered in the shell, wherein the inner core is a tantalum metal block with a spongy porous structure and is internally filled with irregular pores which are communicated with one another; a unilateral conducting layer, a negative main body layer, a graphite conducting layer and a silver conducting layer sequentially cover the surfaces of the porous structure and the geometric profile of the tantalum metal block; a positive input end penetrates through the negative main body layer and the unilateral conducting layer to be connected with the tantalum metal block; the shell is a semi-closed rectangular box body, the middle part of the front face of the shell is provided with a groove from top to bottom, and the inner core is partially exposed out of the groove; the groove aligns to a connection part of a negative end electrode pin and the silver conducting layer; insulating fillers are filled between the shell and the inner core. The ignition device disclosed by the invention is large in working temperature range, high in ignition spraying temperature, great in pressure, long in duration time, far in acting distance, high in high-temperature resistance and anti-jamming capability, small in size and safe and convenient in storage and transportation, and is suitable for application of an electronic digital detonator with automatic delaying function.

Description

technical field [0001] The invention relates to a pyrotechnic product, in particular to an electric detonator ignition device without sensitive pyrotechnic agent. Background technique [0002] Most of the existing electric detonators use a thermal bridge wire ignition device. When a large current flows through the thermal bridge wire, the thermal bridge wire generates heat and ignites the sensitive pyrotechnic agent attached to the surface of the thermal bridge wire to detonate the detonator. There are following problems in this type of firing device: [0003] 1. Due to the high sensitivity of the pyrotechnic agent coated on the surface of the thermal bridge wire, it is easy to accidentally explode when placed in a high temperature and high pressure environment, and it is also very sensitive to vibration and friction, which brings great difficulties to production, storage, transportation and use. There are many security issues; [0004] 2. Because the coating often relie...

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide an electric detonator ignition device without sensitive pyrotechnics agent, to overcome the above-mentioned thermal bridge wire ignition device relying on highly sensitive pyrotechnics ignition agent to ignite, which is relatively safe in production, storage, transportation and use. Poor, and the plasma ignition device has too high requirements on the driving power, it is difficult to apply to the problem of high-precision time-delay digital electronic detonator

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