Highly insensitive small electric exploder

Abstract

The invention relates to a highly insensitive small electric exploder and aims to solve the problem that an electric exploder in the prior art cannot meet the high insensitive demand of not generatinga flame at 1.5 A2.25 W 5 min. The highly insensitive small electric exploder comprises a shell, two polar needles, two glass tubes, a bridge and an insulating ring. A sealing assembly, the glass tubes, a ceramic sheet, the insulating ring and a baffle block are successively mounted from left to right in the shell. The two glass tubes are symmetrically arranged based on the axle wire of the shell;a static channel is arranged between the sealing assembly and the left end surface of each glass tube; one ends of the two polar needles penetrate the sealing assembly first, then penetrate the two static channels and the two glass tubes then, and finally penetrate the ceramic sheet to be connected to the bridge; the bridge clings to the ceramic sheet; a first cavity is formed among the insulating ring, the ceramic sheet and the baffle block, and the first cavity is filled with a primary charge; the primary charge comprises 35-50% by mass of zirconium powder and 65-50% by mass of potassium perchlorate; and a second cavity is formed in the left side of the baffle block in the shell, and the second cavity is filled with an output charge.

Description

technical field [0001] The invention relates to a detonator, in particular to a miniaturized electric detonator with high insensitivity. Background technique [0002] The electric detonator is a kind of electric pyrotechnic product widely used in the aerospace field. After receiving the specified electrical signal, it outputs high-temperature and high-pressure propellant gas, which can be used to actuate the electric explosion valve, and can also be used to ignite or spread the explosive pyrotechnics device. While ensuring reliable operation, the electric detonator should also have certain safety performance to ensure service safety. Currently, it is generally required in relevant professional standards that insensitive pyrotechnic products should meet "1A1W5min non-ignition". However, some existing models are under development. , generally put forward the high insensitivity requirement of "1.5A2.25W5min no ignition", therefore, the existing electric detonator products cann...

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