Self-driven ignition device without external power supply and preparing method of self-driven ignition device

Abstract

The invention discloses a self-driven ignition device without external power supply and a preparing method of the self-driven ignition device. Two opposite electret electrodes are adopted, one electret electrode is fixed, and the other electret electrode is limited in an ignition device shell through a limiting device. A positive charge and a negative charge are arranged on the opposite surfaces respectively, an electric field is formed, and an initiating fire work chemical and an ignition sharp end are arranged on the opposite surfaces respectively. When the stress of the ignition device in the axial direction exceeds the overload force threshold value of the limiting device, the limiting device releases the limited electret electrode, the electret electrode released is close to the other electret electrode, strong charge transferring is generated between the ignition sharp end and the other electret electrode, and spark discharge is formed. The initiating fire work chemical is ignited or detonated, and chemical output is achieved. By means of electrets with charges of different polarities, energy exchanging output without depending on external energy is achieved, the self-driven characteristic is achieved, and the size and the power consumption of initiating explosive device support devices can be obviously reduced.

Description

technical field [0001] The invention relates to pyrotechnics technology, in particular to a self-driven ignition device without external power supply and a preparation method thereof. Background technique [0002] Pyrotechnics are a type of transducing device used to convert external stimuli such as mechanical and electrical into heat or other forms of energy output. At present, most pyrotechnic products are electric pyrotechnic products, which are characterized by converting external electric energy into heat energy, or forming a form of high-temperature plasma energy output to burn the starting agent. This type of pyrotechnic device needs to rely on external energy input when it works, and usually needs to be equipped with energy storage devices such as capacitors and batteries, and also needs to be equipped with auxiliary devices such as control switch tubes, so the driving circuit is complicated and the reliability of the action is poor. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

When this kind of pyrotechnic product works, it needs to rely on external energy input. It usually needs to be equipped with energy storage devices such as capacitors and batteries, and also needs to be equipped with auxiliary devices such as control switch tubes. Therefore, the driving circuit is complicated and the reliability of the action is poor.

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