KR100288558B1 - Without primary explosive detonator - Google Patents

Abstract

The present invention relates to an inorganic explosive detonator, and has an object of providing an inorganic explosive detonator having a simple structure and improved safety by eliminating the use of the detonator.

Inorganic explosive detonator according to the present invention, the metal tube (2) embedded in the tube body (1) of the detonator filled with the lower medicine; A retarder 21 filled in an upper end of the inside of the metal tube to block an upper portion of the metal tube; A complexing agent 22 filled below the retarder in the metal tube; A first full width medicine (23) filled under the complexing agent in the metal tube; And a second full explosive charge 24, which is filled between the first full explosive and the pill. The first full explosive is composed of RDX, PETN, TNT having a surface area of 6,400 to 8,900 cm 2 / g, or those in which a combustion catalyst of metal powder or metal oxide is added, and the second full explosive (24) has a particle surface area. It is preferable that it is 500-2,000 cm <2> / g and consists of the same thing as the primary full width medicine 23. The retarder 21 is made of a metal or a nonmetallic material such as B, Zr, Si, Pb or Fe or a metal-nonmetal oxide, and is preferably filled at a filling pressure in the range of 1,600 to 2,000 kgf / cm 2. The complexing agent 22 is preferably made of the same material as the complexing agent having a combustion amount of 1,600 cal / g or more and filled at a pressure of 1,600 to 2,00 kgf / cm 2.

Description

Weapon Explosive Primer {Without primary explosive detonator}

The present invention relates to an inorganic explosive detonator that does not use an explosive, and is sensitive to heat or impact and easily explodes, thereby deflating the entire explosive having a low gunpowder sensitivity and high pressure instead of a detonated explosive. By inducing detonation and detonation, accidents during manufacture and handling can be prevented, and the structure and manufacturing process are also related to a simple explosive detonator.

Detonators are well-known as dynamite or dynamite embedded in gun shells and so-called composition explosives, which are installed at the tip of the gun shell or on either side to generate shock energy, ie pressure waves, through detonation and detonation when subjected to heat or impact. It is designed to explode the main explosive, which is a mixture of RDXs.

As a general primer, a detonator with a built-in detonator is mainly used. The detonator detonator, as shown in FIG. 7, includes a tube 5 of the detonator, in which a lowering agent 51 is filled in the lower part; A metal tube 52 embedded in an upper portion of the epitaxial medicine 51 of the tube 5; The metal pipe 52 includes a retarder 53, a detonating agent 54, and a full exploding agent (PETN) 55, which are sequentially filled from top to bottom. As the initiator 54, DDNP, LA (lead azide), etc. are usually used. In addition, RDX is mainly used as the extended medicine 51.

Therefore, when heat or shock is applied to the primer by the detonator, the thermal energy generated by the explosion of the detonation agent 54, which is most sensitive to heat or impact, is transmitted to the full explosive drug 55, which is generally insensitive to gunpowder sensitivity. 55) detonation and detonation are induced, and the explosion of the chief explosive embedded in the medicament 51 and the gun shell is induced by the shock waves caused by thermal energy and pressure at this time. The retarder 53 serves to prevent the high-pressure gas expansion pressure generated during the decomposition of the full width medicine 55 from being lost to induce a full width.

Primer embedded with such a detonation agent (54) has the advantage that the structure and manufacturing process is simple, while the detonation agent (54) is very sensitive to heat or impact, there is a risk of a major accident during manufacturing or handling, the safety is reduced Therefore, the inner explosive inner tube has been developed to remove the explosive (54).

Representative inorganic explosive detonators include those developed by NNAB of Sweden. As shown in Fig. 8, the primer is a tube 6 of the detonator with an effervescent medicine 61 filled therein; NPED metal pipe (62) is built in the upper portion of the medicament (61) of the tube (6) and the shimming cup (63) is coupled to the inside of the lower end; A metal tube 64 embedded in an upper portion of the NPED metal tube 62 of the tube body 6; A retarder (65) filled in the metal tube (64); An auxiliary ignition agent (66) filled between the metal tube (64) and the NPED metal tube (62); A complexing agent 67 filled in the upper end of the NPED-only metal tube 62; A first full width medicine (68) filled in the lower complexing agent (67) in the NPED metal pipe (62); And a second full width medicine (69) filled between the NPED metal pipe (62) and the additive medicine (61).

This weapon explosive primer is made safe by additionally using components such as NPED metal tube 62, auxiliary ignition agent 66, complexing agent 67 and shimmering cup 63 to seal the explosive charges 68 and 69. Is increased, but not only is the structure complicated, but also the manufacturing process is complicated, the productivity is lowered and the production cost is increased.

The present invention has been made to solve the conventional problems as described above, it is made of a simple structure and aims to provide an inorganic explosive detonator improved safety by eliminating the use of the detonator.

1 is a schematic structural diagram showing a primer according to the present invention.

2 is an explanatory diagram showing a state in which the deflagration step is progressed by the primer according to the present invention.

3 is an explanatory diagram showing a state in which the transition from deflagration to detonation proceeds by the primer according to the present invention.

4 is a view for explaining the results of the performance expansion test for the primer according to the present invention.

5 and 6 are diagrams for explaining the net width test method for the primer according to the present invention, respectively.

7 is a structural diagram showing an example of a primer using a conventional general initiator.

8 is a structural diagram showing an example of a conventional explosive detonator.

<Explanation of symbols for main parts of drawing>

1: tube of detonator 2: metal tube

3: playing 11: pill

21: Retardant 22: Complexing Agent

23: first full explosion 24: second full explosion

41: detonating primer 42: insensitive primer

In order to achieve the above object, the explosive detonator primer according to the present invention includes a metal tube embedded in the tube body of the detonator filled with a lower medicine; A retarder filled in an upper end of the metal tube; A complexing agent filled under the retarder in the metal tube; A first full explosive charge filled under the complexing agent in the metal tube; And it is characterized in that it comprises a secondary full explosives charged between the first full explosives and the pill.

According to the inorganic explosive primer according to the present invention made as described above, when the complexing agent is ignited by heat or impact, the rapid decomposition of the first full explosive proceeds and the gas generated from the first full explosive is approximately 5305 ° K. In addition, it propagates to the second full explosive at an expansion pressure of 1.5 Kbar to compress and preheat the second full explosive. Compressed and preheated secondary explosives accelerate the decomposition and transition to detonation as shock waves occur, leading to the explosion of medicinal and principal explosives.

Other features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

As shown in Fig. 1, reference numeral 1 denotes a tube body of the detonator, and the lower portion 11 is filled with the medicament 11. As an adjunct (11), it is about 1.6 times more explosive than Trinitrotoluol (TNT) and is commonly known as Hexogen (RDX) or RDX and Penthrite It is preferable that a mixture of abbreviated PETN) is used. When the primer according to the present invention is used as an electric primer, an electric ignition apparatus having a vinyl copper wire attached to the upper end of the tube 1 of the detonator may be coupled, and when used as a non-electric primer, a shock tube and a rubber sleeve may be coupled. Can be.

Inside the tube 1, a metal tube 2 having an upper and lower portion opened therein is inserted. The metal tube 2 is preferably embedded in the tube 1 at a predetermined interval on the upper portion of the medicament 11.

The upper end of the inside of the metal tube 2 is filled with a retarder 21 to block the upper portion of the metal tube 2. The retarder 21 is preferably filled at a high pressure so that no leaching or cracking occurs due to external shock or vibration. The reason for filling the retardant 21 at such a high pressure is that the gas produced by the decomposition of the full width medicines 23 and 24 which will be described later when the strength of the combustion solids of the retardant 21 is weak or cracks occur during the filling. This is because the internal expansion pressure is lost to the outside of the metal tube (2) due to the failure to seal the high expansion pressure of the metal tube (2) and thus cannot induce a complete detonation of the primer. Therefore, the retardant 21 should be filled at a pressure higher than the expansion pressure of the gas produced by the decomposition of the full width medicines 23 and 24. The filling pressure of the retarder 21 is preferably in the range of 1,600 to 2,000 kgf / cm 2.

On the other hand, the complexing agent 22 is filled below the retarder 21 inside the metal tube 2. The complexing agent 22 is used to ignite the full explosive by ignition by heat or impact instead of the detonating agent used in the initiator primer. As the complexing agent 22, it is preferable to use a combustion lead of 1,600 cal / g or more, and the complexing agents 22 may be ignited by the complexing of the complexing agent 22 so that decomposition may proceed well. ) Is preferably filled at a pressure of 1,600 ~ 2,000kgf / ㎠.

As the retarder 21 and the complexing agent 22, a metal or nonmetallic material such as B, Zr, Si, Pb, Fe, or a metal-nonmetal oxide may be used.

In the lower part of the complexing agent 22 inside the metal tube 2, the primary full explosive 23 for defoaming reaction (propagation speed below the speed of sound) is filled, and the metal tube 2 and the extender 11 are interposed therebetween. Is filled with a secondary full explosive 24 for detonation decomposition reactions (propagation speeds above the speed of sound). It is preferable that the primary full explosives 23 and the secondary full explosives 24 are continuously filled without using additional fillers at their boundaries.

The full explosives (23, 24) have a property that the decomposition rate is changed according to the particle surface area and the specific gravity of the charge, and the first full explosives (23) and the second full explosives (24) so that deflagration and detonation can be induced by using the same. ) Is preferably charged with different charging conditions.

The primary full explosives (23) in the group including RDX, PETN, TNT having a surface area of 6,400 to 8,900 cm 2 / g or those in which a metal powder or a combustion catalyst of metal oxide is added thereto to induce a deflagration reaction well It is preferable to use any one selected. The secondary full explosives 24 have a particle surface area of 500 to 2,000 cm 2 / g and are preferably the same as the first full explosives 23 so that the detonation decomposition reaction can be induced well. It is preferable to be filled at a pressure of 200 ~ 500kgf / ㎠ so that the filling ratio.

When the charging conditions of the first full explosive 23 and the second full explosive 24 are different, the deflagration reaction as shown in FIG. 2 is performed by the first full explosive 23 ignited by the ignition of the complexing agent 22. As a result of the decomposition and production gas of high temperature and high pressure (approximately 5305 ° K and an expansion pressure of 1.5 Kbar) generated by the deflagration reaction of the primary full explosive 23, as shown in FIG. The secondary full explosives 24 are preheated and compressed to accelerate decomposition and easily develop into detonation, resulting in the explosives 11 and the main explosives exploding. In the deflagration reaction of the primary full explosive 23, the retarder 21 is filled at a pressure higher than the expansion pressure of the decomposition product gas so that the expansion pressure of the decomposition product gas is not lost.

Next, the results of the test on the performance of the inorganic explosive primer according to the present invention configured as described above will be described.

[Test Example 1]

400 weapon explosive primers according to the present invention were prepared, and the initial test and wanability were evaluated at room temperature, and the results are shown in Table 1 below.

As can be seen from Table 1, the sample is 100% full, so it can be seen that the width is good, just like the detonation primer.

[Test Example 2]

After preparing 200 shots of the explosive detonator primer according to the present invention, the high-temperature and low-temperature treatment was performed for 100 hours at 54 ° C. for 4 hours and at 40 ° C. for 4 hours. Indicated.

As can be seen from Table 2, it can be seen that safety is excellent at the storage at high temperature and low temperature.

[Test Example 3]

Twenty rounds of weapon explosive primers according to the present invention were tested for the penetration force through the plate (the dynamic power of the primer), and the results are shown in Table 3.

As can be seen from Table 3, it can be seen that there is almost no difference in performance between the explosive detonator and the detonator detonator using the conventional detonator according to the present invention.

[Test Example 4]

The explosive detonation of the explosive detonator according to the present invention was evaluated. Two explosives were detonated as a result of evaluating the explosive aeration of the primers five times using emulsion explosives and hydrous explosives, which were relatively insensitive to detonation.

[Test Example 5]

The performance (3) expansion test showing the static power of the primer was performed as shown in FIG. 4 for the inorganic explosive primer and the conventional explosive primer according to the present invention, and the results are shown in Table 5 and compared.

As can be seen from Table 5, the static power of the inorganic explosive primer according to the present invention can be seen to be almost the same as the conventional explosive primer, and in the inorganic explosive primer according to the present invention, It can be seen that with the increase, the static power is slightly increased than the conventional detonator primer.

[Test Example 6]

As shown in FIGS. 5 and 6, the explosive detonator 41 and the desensitizing detonator 42 have a forward width in the X-axis and the Y-axis as shown in FIGS. 5 and 6. The primer net width test was done by varying the distance to, and the results are shown in Table 6.

NPNA net explosive distance X of NNAB is shown to be at a minimum of 3cm on the product catalog, so the explosive primer according to the present invention can be seen that the equivalent of NNAB.

[Test Example 7]

In addition to the inorganic explosive primer according to the present invention, after the temperature cycling and vibration treatment, a soft plate penetration test was performed, and the results are shown in Table 7b. Temperature cycling conditions range from 54 ° C./4 hours to minus 40 ° C./4 hours. The vibration test conditions are shown in Table 7a.

As can be seen in Table 7b, the inorganic explosive primer according to the present invention can be seen that the primer structure and each filler is not affected by vibration at all.

According to the inorganic explosive primer according to the present invention configured as described above, compared to the conventional explosive primer and inorganic explosive primer, the structure is simple and easy to manufacture with little difference in performance, thereby increasing productivity and reducing manufacturing costs. Is promoted.

In addition, by eliminating the use of the detonating agent, it is safe, and accidents during manufacture and handling can be prevented, thereby improving safety.

Claims (2)

A metal tube embedded in the tube body of the detonator in which the medicament is filled in the lower part; A retarder filled in the upper end of the inside of the metal tube and made of any one metal or nonmetallic material or metal-nonmetal oxide selected from the group comprising B, Zr, Si, Pb or Fe; Complexed with any one metal or nonmetallic material or metal-nonmetal oxide selected from the group containing B, Zr, Si, Pb or Fe, which is charged under the retarder in the metal tube and has a combustion lead of 1,600 cal / g or more. Confectionery; The combustion catalyst of hexogen (RDX), penslit (PETN), trinitrotoluol (TNT), or the like, which is filled under the complexing agent inside the metal tube and has a surface area of 6,400 to 8,900 cm 2 / g Primary full explosives consisting of any one selected from the group containing those added; And an inorganic explosive detonator filled between the first full explosive and the medicament, comprising a second full explosive having a particle surface area of 500 to 2,000 cm 2 / g and the same as the first full explosive. The method of claim 1, wherein the first full width is filled with a compression pressure of 400 ~ 1,100kgf / ㎠ so that the filling ratio of 1.4 ~ 1.6g / cc, the second full width of about 0.8 ~ 1.2g / cc Inorganic explosive detonator, characterized in that it is filled at a pressure of 200 ~ 500kgf / ㎠ to be specific gravity.