Unlock instant, AI-driven research and patent intelligence for your innovation.

Large festive firework with micro-pore firework ammunition as depucelation ammunition and preparation method of large festive firework

A technology of opening medicine and micro-pores, which is applied in the directions of fireworks, offensive equipment, weapon types, etc., to achieve the effect of reducing the amount of use, increasing the free volume, increasing the pressure and the explosion diameter

Inactive Publication Date: 2013-06-05
NANJING UNIV OF SCI & TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no relevant report in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Large festive firework with micro-pore firework ammunition as depucelation ammunition and preparation method of large festive firework
  • Large festive firework with micro-pore firework ammunition as depucelation ammunition and preparation method of large festive firework

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] to combine figure 1 , using 3-inch fireworks shells as an example, at this time, one end of the delay fuse is outside the inner shell and is in contact with its outer surface, and the granular micropore fireworks drug is used as the bud opening drug, and the composition quality of the combustible inner spherical shell The percentage content is 75% of nitrocellulose, 0.3% of stabilizer (No. 2 neutralizing agent), and 23% of camphor (plasticizer). The thickness of the combustible inner spherical shell is 0.15mm and the diameter is 20mm. The diameter of the outer spherical shell is 76mm, the thickness is 3mm, and the diameter of the bright beads is 10mm, which is prepared by a general molding process.

[0030] The preparation process of the granular micropore fireworks drug is as follows: use the decommissioned single-base drug containing more than 95% nitrocellulose as the raw material, add ethyl acetate solvent 8 times the mass of the drug particles under stirring, and ...

Embodiment 2

[0033] to combine figure 2 , the charge structure is similar to that of Embodiment 1, and one end of the time-delay fuse extends into the inside of the inner shell.

[0034] The charging method and steps are also the same as in Example 1, except that half of the inner casing is pre-drilled, and during the charging process, one end of the delay fuse is inserted into the hollow structure formed by the combustible inner casing Internal, parallel pack of 10 rounds, fire test. The average residual drug rate is 5%, the burning rate of bright pearls is 100%, the diameter of bud opening is about 50 meters, and the smoke of bud opening is greatly reduced.

[0035] As a comparison, the granular micro-pore fireworks drug is used as the opening drug, and the charge is carried out according to the conventional fireworks shell charging method, that is, there is no combustible inner shell structure and hollow charge structure, and the charge amount of the opening drug is 18g, the diameter...

Embodiment 3

[0038] to combine figure 1 , the charge structure is the same as in Example 1, only the raw materials used to prepare the combustible inner shell are changed, and the mass percentage of its composition is 50% of nitrocellulose, and the stabilizer is 2.0% (No. 2 neutralizing agent), nitrocellulose Glycerin (plasticizer) 25%, camphor (plasticizer) 20%.

[0039]The charging method and steps are also the same as in Example 1, and 10 rounds are packed in parallel, and the ignition test is carried out. The average residual drug rate is 6%, the burning rate of bright pearls is 100%, the diameter of bud opening is about 50 meters, and the smoke of bud opening is greatly reduced.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a large festive firework with micro-pore firework ammunition as depucelation ammunition and a preparation method of the large festive firework. The large festive firework structurally comprises a shell, a delay firing cable, a bright ball, the depucelation ammunition and a combustible inner layer shell. A method for depucelating and feeding the large festive firework comprises the following steps of: arranging the bright ball on the inner side of a large festive firework spherical shell, directly feeding the depucelation ammunition into a semi-spherical shell or packaging the depucelation ammunition particles into thin paper and filling into the spherical shell; pressing a half of the combustible inner layer shell onto the depucelation ammunition, and filling the other half of the large festive firework spherical shell by using the same depucelation ammunition feeding sequence, wherein the length of the delay firing cable in the shell is kept contacted with theinner layer shell or passes through the shell and enters a hollow part; and finally, buckling the two large festive firework half spheres, papering by adopting the conventional ball-pasting method and drying the large festive firework. By the depucelation ammunition feeding structure and the depucelation ammunition feeding method, residual depucelation ammunition particles during firing can be avoided, the burning rate of the bright ball is increased, and the enjoyment effect of setting off of the large festive firework and the environment friendliness are improved.

Description

technical field [0001] The invention belongs to the bud-opening technique of fireworks bombs, in particular to a fireworks bomb using micro-pore fireworks medicine as a bud-opening charge and a preparation method thereof. Background technique [0002] At present, due to its environmental protection and safe use, micropore fireworks powder has become an ideal substitute for black powder for fireworks or other propellant charges, and has been highly valued by the fireworks and firecracker industry. However, if the traditional granules made of black powder and rice husk are used as the charging method and charging structure of the bud opening drug, the excellent performance of the micro-pore fireworks drug cannot be brought into full play, and the firing rate of the bright beads is low. Low, the explosion diameter is too small, and there will be the problem of residual medicine in the bud opening process, which cannot reach the explosive effect of traditional bud opening medici...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F42B4/00F42B4/30
Inventor 潘仁明蔺向阳李生有
Owner NANJING UNIV OF SCI & TECH