Polyhedral energy-accumulating metal blasting fuse and using method thereof

A technology of detonating cord and metal, which is applied in the production of detonating equipment and in the field of detonation, and can solve the problems that have not yet been reported on metal detonating cord.

Inactive Publication Date: 2011-11-02
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this kind of energy-gathering technology is applied in ammunition design, oil perforation, armor-piercing technology, mining and other fields, but so far there has been no report of it being used in metal detonating cords

Method used

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  • Polyhedral energy-accumulating metal blasting fuse and using method thereof
  • Polyhedral energy-accumulating metal blasting fuse and using method thereof
  • Polyhedral energy-accumulating metal blasting fuse and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , The detonating cord is cylindrical, the outer diameter is 3.0mm, the metal outer layer wrapped on the surface is aluminum, the tube wall thickness is 0.25mm, the drug core charge is RDX, and the drug core linear density is 3.6g / m. On the outer surface of the aluminum tube, there is a through arc groove, the diameter of the arc groove is the same as that of the detonating cord, and the depth of the groove is 1.5mm. figure 2 .

[0023] image 3 , Figure 4 expressed the two figure 1 The metal detonating cord in the method is connected in a side-to-side "1-to-1" detonation transmission method. Wherein, the detonating cord to be detonated is placed in the detonating cord groove which plays the role of detonating. Since the diameter of the two detonating cords is the same as the diameter of the arc groove, the two can be in close contact, and the length of the overlapping part is 3cm, and the detonation can be realized after being bound firmly with adhes...

Embodiment 2

[0026] see Figure 5 , The detonating cord is cylindrical, with an outer diameter of 3.0mm, the metal outer layer wrapped on the surface is aluminum, the tube wall thickness is 0.25mm, the core charge is RDX, and the charge linear density is 3.6g / m. There is a penetrating angular groove on the outer circular surface of the energy-shaping metal detonating cord aluminum tube, the two corners are equal, the apex angle is 110 degrees, and the apex reaches the center of the outer circular surface of the energy-shaping metal detonating cord aluminum tube The distance is 1 / 2 the radius of the metal detonating cord.

[0027] Figure 6 is to combine two Figure 5 Schematic diagram of the parallel method of detonating the metal detonating cord in the sideways "1 pass 1" detonation. When connecting sideways in parallel, place the detonating cord to be detonated in the groove of the detonating cord that plays the role of detonating, so that the two are as close as possible, the length ...

Embodiment 3

[0030] Figure 7 Among them, the detonating cord 1 is an energy-shaping metal detonating cord with one groove, and the detonating cord 2 to be detonated is an ordinary circular metal detonating cord. The outer diameter of 1 is 4.0mm, the metal outer layer is aluminum, and the wall thickness is 0.3mm. There is a groove with a length of 10cm on the surface of the aluminum tube. arc on . 2 is the ordinary metal detonating cord that is circular in shape, and the outer diameter is 4.0mm. The core charge of 1 and 2 is RDX, and the charge linear density is 6.5g / m.

[0031] Figure 7 It is a schematic diagram when the above two metal detonating cords are connected sideways in parallel. Ordinary metal detonating cord 2 is placed in the groove of detonating detonating cord 1, so that the two are as close as possible, and the length of the overlapping part is 8cm. Use adhesive tape to bind the overlapping parts firmly to realize parallel explosion transmission.

[0032] After the a...

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Abstract

The invention belongs to the technical field of manufacturing of ignition and boosting apparatuses. A polyhedral energy-accumulating metal blasting fuse comprises an inner flux core and a circular-tube metal outer layer coated outside, wherein the metal outer layer is provided with one or more groove structures; the cross section of each groove has a circular-arc structure or an angular structure or a stepped structure or other structures of irregular shapes; the depth of each groove is smaller than or equal to a half of the outer diameter of the metal blasting fuse; and the length of each groove is larger than that of a superposed part between two laterally parallel metal blasting fuses. A method for laterally boosting by using the polyhedral energy-accumulating metal blasting fuse comprises the following steps of: arranging the cylindrical surface of a boosted metal blasted fuse in the groove surface of a metal blasting fuse playing a role in boosting; and binding with an adhesive tape and a leg wire, wherein the length of a superposed part between the adhesive tape and the leg wire is more than 1 centimeter. The polyhedral energy-accumulating metal blasting fuse can be directly subjected to lateral parallel boosting without any auxiliary component, has the advantages of reliable ignition, easiness, convenience and rapidness for connection and no need of accessories, and is suitable for lateral direct parallel connection of blasting fuses of different sizes and different explosive charging densities.

Description

Technical field: [0001] The invention belongs to the technical field of making detonation and detonation transfer equipment. Background technique: [0002] Metal detonating cord has been widely used in mining, blasting, military, aviation, space weapons and other fields since its appearance in the late eighteenth and early nineteenth centuries. Metal detonating cord can be divided into ordinary detonating cord (charge linear density>12g / m), low energy detonating cord (charge linear density 3-12g / m), ultra-low energy detonating cord (charge linear density<3g / m / m). No matter what kind of metal detonating cord, it will encounter the problem of lateral connection initiation in practical application. The experiment in the document "Research on Explosion Network and Application Technology of Metal Detonating Cords" (Kang Congcheng, Master's Thesis of Nanjing University of Science and Technology, 2004) shows that when the radial distance between two metal detonating cords ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00
Inventor 马宏昊沈兆武
Owner UNIV OF SCI & TECH OF CHINA
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