A tvs tube type high-efficiency electrostatic protection bridge wire electric detonator

Abstract

The invention relates to a TVS tube-type high-efficiency electrostatic protection bridge-wire electric detonator, which includes an electrode plug, a bridge wire, a propellant, a primer, a high explosive, a reinforcing cap, a detonator shell, and a disc-shaped high-efficiency anti-static component. The high-efficiency electrostatic protection component connects the circuit board of the disc-shaped electrostatic protection PCB with the double-leg wire circuit of the electric detonator to form a foot-foot static discharge channel, and connects with the shell circuit to form a foot-shell static discharge channel. The high-efficiency electrostatic protection component of the present invention constitutes a dual-safety discharge channel for electrostatic protection through the foot-foot electrostatic protection device and the foot-shell electrostatic protection device, as well as the foot-shell static discharge channel formed by a plurality of pointed air gaps. The electrostatic protection component of the present invention adopts TVS tube, which can realize the electrostatic protection of the foot-shell and the foot-foot to be greater than 50kV, and can withstand multiple impacts of electrostatic discharge no matter on the foot-shell protection or the foot-foot protection. Any performance changes will occur.

Description

Technical field [0001] The patent of the present invention belongs to the electric detonator protection technology, in particular to a high-efficiency electrostatic protection technology of the electric detonator against the extreme electrostatic environment of the human body. Background technique [0002] The electric detonator is an important detonating element for the detonation of explosive devices or the detonation of weapons and ammunition in engineering blasting. The glowing bridge wire element is often used as the electrothermal transducer element in the electric detonator. The bridge wire is welded between the ends of the two metal wires of the electric detonator. When the ignition current is passed through, the bridge wire realizes the electrothermal conversion of the electric detonation control signal (ignition current), and the heat generated by the bridge wire generates high temperature, which ignites the explosive powder in contact After the propellant is ignit...

AI Technical Summary

Problems solved by technology

[0005] The anti-static structure disclosed in Chinese patent CN201210540239.9 is to insert a horizontal discharge metal connector at the rear end of the detonator. The size is relatively large, and it is not suitable for long legs or small-sized detonators.

The connection between the metal connector and the leg wire of the detonator is connected by crimping, which may easily cause the electrode to fall off and the protection circuit to be disconnected, making the electrostatic protection circuit invalid

The external plug-in discharge metal connector increases the difficulty of the detonator manufacturing process. If the detonator is inserted after the detonator is formed, it will easily cause accidental ignition and cause danger. However, the external insertion of the detonator before the detonator is formed will bring great inconvenience and trouble to the detonator manufacturing process. At the same time, the external insertion of the horizontal discharge metal connector will limit the use of the detonator. In the case of high overload of the missile, the external large horizontal circuit board is easy to fall off and pose a danger to the system. When there is no extra space for use, the external large horizontal circuit board is inserted. board will bring danger to the entire system

And the patent does not explain the protective effect of static electricity

[0006] The anti-static structure disclosed in Chinese patent CN201220055188.6 is only used in the semiconductor bridge detonator, and only one sharp corner discharge is used to protect the foot-shell static electricity, because the product will pass at least 3 to 5 people during the transportation and assembly process Discharging the product may cause melting and deformation of the sawtooth after one discharge, thus losing the electrostatic protection effect, and danger will occur after multiple discharge impacts; at the same time, the patent does not give a protective effect, nor does it propose anti-static protection for multiple times. Shock, more did not raise the size of the product size

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