Explosive foil overpressure chip and detonation device integrated with microfoil switch
A technology of detonating device and detonating foil, which is applied in blasting barrels, offensive equipment, weapon accessories, etc., can solve the problems of insensitive explosives that cannot be directly detonated, low efficiency, and high price, and achieve standardized mass production, reduced process flow, and low cost Effect
Active Publication Date: 2022-01-07
NANJING UNIV OF SCI & TECH
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Problems solved by technology
Explosive foil detonators with traditional structures are assembled by manual assembly of individual components, which have low efficiency, large volume, high energy consumption, and high price; at the same time, the pressure at the output end of the traditional explosive foil detonators is about 5GPa. However, the critical detonation pressure of insensitive explosives such as TATB is usually required to be greater than 18GPa. If there is no detonation and expansion sequence, the detonating foil detonator cannot directly detonate insensitive explosives.
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Embodiment 1
[0057] An explosive foil overpressure chip with integrated microfoil switch, such as figure 1 , figure 2 shown. The chip includes a ceramic substrate 1, a metal TiW / Cu layer 2, a Parylene C layer 3, an upper electrode TiW / Cu / Au4, and an Su8 acceleration chamber 5; the ceramic substrate 1 is provided with a metal TiW / Cu layer 2; the metal The TiW / Cu layer 2 is further divided into the lower electrode area 6, the explosive foil array area 7 and the main circuit high-voltage pad area 8, wherein the lower electrode area 6 and the main circuit high-voltage pad area 8 are rectangular structures, respectively located in the explosive foil array The left and right sides of the area 7 are connected to it; the explosion foil array area 7 is a circular structure, which is divided into an explosion foil 7-1, a transition area 7-2 and a connection area 7-3, wherein the explosion foil 7 -1 is the narrowest part in the explosion foil array area 7, there are four, the connection mode is th...
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The invention belongs to the field of detonation, in particular to an explosive foil overpressure chip integrated with a micro-foil switch and a detonation device. It includes a micro-foil switch unit and an explosive foil overpressure chip unit integrated on the same ceramic substrate. The explosive foil overpressure chip unit includes a plurality of explosive foils, and the multiple explosive foils are connected in series and then in parallel to form a "quincunx" explosive foil array Area. In the chip of the present invention, 4 explosive foils are connected in parallel, and the 4 explosive foils are used to respectively drive 4 flyers to impact and detonate 4 HNS explosive columns, and the detonation waves generated by the HNS explosives collide with each other to form Mach reflection and generate overpressure Detonation exceeds the critical detonation pressure of insensitive explosives, thereby canceling the detonation and expansion sequence to directly detonate insensitive explosives. Moreover, the switch in the chip adopts a micro-foil switch, which separates the trigger circuit of the switch from the main circuit of the explosive foil overpressure chip, thereby reducing the detonation energy of the main circuit.
Description
technical field [0001] The invention belongs to the field of detonation, in particular to an explosive foil overpressure chip integrated with a micro-foil switch and a detonation device. Background technique [0002] High-energy, insensitive detonation is one of the research directions of explosion mechanics. How to achieve high-energy and insensitive detonation has been the direction of efforts of researchers in explosion mechanics at home and abroad. Exploding Foil Initiator (Exploding Foil Initiator, EFI) whose primary charge is in-line permitted HNS explosive, is a typical insensitive detonation method. It mainly includes base plate, explosion bridge foil, flyer, acceleration chamber and agent. Since the detonating foil detonator does not contain sensitive priming charges, the sensitivity of the charges used is equivalent to that of high-density high explosives, so the entire detonating system has high safety and reliability. Widely used in the detonation system of nu...
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IPC IPC(8): F42B3/12F42B3/195
CPCF42B3/121F42B3/195F42B3/124
Inventor 朱朋张秋沈瑞琪叶迎华吴立志张伟胡艳
Owner NANJING UNIV OF SCI & TECH