Destroying system and destroying method for explosives with shells

Abstract

The invention discloses a destroying system and destroying method for explosives with shells. The destroying system comprises a combustion device, a cutting device and an ignition exploder. Wherein the combustion part comprises a medicine charging barrel and a combustion agent arranged in the medicine charging barrel, and a fire spraying opening is formed in the lower portion of the medicine charging barrel; the electric ignition element comprises a wire, a transduction element and ignition powder, the supporting part is used for clamping the combustion part and controlling the height and angle of the fire spraying opening. The cutting device comprises a fixed seat, a flexible cutting rope, a magnet and a detonator seat, and the ignition exploder is used for starting the detonator seat and the electric ignition element. According to the invention, the explosive with the shell is ignited by using the combustion agent, and then the shell is decomposed in a cutting mode of the cutting device, so that the charge in the explosive is combusted in an open space, and the combustion safety is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of explosive destruction, and particularly relates to a destruction system and a destruction method for cased explosives. Background Art

[0002] During military training, large-scale exercise activities or post-war mine clearance, it is often necessary to destroy landmines or unexploded ordnance, and the destruction is usually dangerous, so professional bomb disposal personnel are required to operate.

[0003] Currently, the explosion destruction method or the combustion destruction method is usually adopted. The explosion destruction method uses a shaped charge jet to impact the casing of the unexploded ordnance to detonate and destroy the unexploded ordnance, but this destruction method has high requirements for the site. The combustion destruction method ignites the charge in the unexploded ordnance through certain technical means, and has low requirements for the site, belonging to a safe destruction method. However, for cased charges, especially ammunition with a metal casing, when using the combustion destruction method, if the gas pressure in the casing rises sharply during the combustion process, there may be a combustion-to-detonation transition.

[0004] Therefore, in the case of adopting the combustion destruction method, how to improve the safety of detonating cased explosives is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a destruction system and a destruction method for cased explosives. The present invention uses a combustion agent to ignite the cased explosives, and then decomposes the casing through the cutting method of the cutting device, so that the charge in the explosives burns in an open space, improving the combustion safety. The combustion agent used in the combustion device has a high heat release, and the decomposition of the casing can enable the gunpowder in the explosives to burn stably, with a high safety factor; and the upper buckle and the lower buckle can fix and adjust the distance between the combustion component and the explosives, without moving or contacting the explosives, being suitable for the destruction of different types of explosives, and having a wide application range.

[0006] To achieve the above purpose, the present invention is implemented by adopting the following technical solutions:

[0007] In a first aspect, the present invention provides a destruction system for cased explosives, including a combustion device, a cutting device, and an ignition initiator.

[0008] The combustion device includes: a combustion component, an electric ignition element, and a support component.

[0009] Among them, the combustion component includes: a cartridge case and a combustion agent disposed within the cartridge case, and a spout is provided below the cartridge case. The electric ignition element includes: a wire, a transducer element, and ignition powder. One end of the wire is connected to the transducer element, and the transducer element is buried in or in contact with the ignition powder. The other end of the wire extends out of the cartridge case, and the ignition powder is in contact with the combustion agent. The transducer element is used to convert the current input by the wire into heat to ignite the ignition powder. The ignition powder is used to ignite the combustion agent. The support component is used to clamp the combustion component and control the height and angle of the spout.

[0010] The cutting device includes: a fixed seat, a flexible cutting cable, a magnet, and a detonator seat. A flexible cutting cable is provided on the fixed seat, and a connecting seat is also provided on the fixed seat. A magnet is provided on the connecting seat, and a detonator seat is also provided on the fixed seat. The detonator seat is connected to the flexible cutting cable.

[0011] The ignition initiator is used to activate the detonator seat and the electric ignition element.

[0012] Optionally, the combustion agent includes iron oxide, aluminum powder, and barium nitrate. Among them, the barium nitrate accounts for 10% - 12% of the total mass of the iron oxide and aluminum powder, and the mass ratio of the iron oxide to the aluminum powder is 3:1.

[0013] Optionally, the flexible cutting cable includes a flexible housing, and a charge is provided within the flexible housing. The charge uses a high - strength explosive with a detonation velocity not lower than 8000 m / s, and the flexible housing is set as a lead - antimony alloy charge - carrying liner structure.

[0014] Optionally, the cartridge case includes a combustion housing. An upper cover is provided at the top of the combustion housing, a spout head is provided at the bottom of the combustion housing, and a sealing head is provided at the free end of the spout head.

[0015] Optionally, the sealing head is provided with an O - ring for further enhancing the sealing performance of the cartridge case.

[0016] Optionally, the magnet uses a magnet with switchable magnetism.

[0017] Optionally, the ignition powder includes black powder and nitrocellulose sheets coated with black powder.

[0018] Optionally, the transducer element uses nickel - chromium wire, constantan wire, or tungsten wire, nickel - chromium thin film, or semiconductor thin film. The two poles of the transducer element are respectively led out with wires.

[0019] Optionally, the charge uses cyclotrimethylenetrinitramine, octogen, or hexanitrostilbene; the angle of the liner structure is 45 - 60 degrees.

[0020] In a second aspect, a method for destroying a sheathed explosive includes the following steps:

[0021] Step S1: Set the support component on one side of the explosive to be destroyed, and adjust the distance between the upper buckle and the lower buckle to match the size of the combustion component.

[0022] Step S2: Install the combustion component on the upper buckle and the lower buckle, and adjust the angle of the flame ejection port to align with the casing of the explosive.

[0023] Step S3: Connect the ignition initiator to the detonator seat and the wire respectively to form a control circuit.

[0024] Step S4: Set the cutting device on the explosive through the fixing seat and further adsorb it on the explosive through a magnet.

[0025] Step S5: Press the detonation button of the ignition initiator. The ignition initiator discharges electricity to the electric ignition element and the detonator seat at the same time. When the current passes through the electric ignition element, the energy conversion element converts electrical energy into heat energy, igniting the ignition agent, and then igniting the combustion agent. The flame generated by the combustion agent will be ejected through the flame ejection port and burn through the casing of the explosive, thereby igniting the explosive inside; when the current passes through the detonator seat after a certain time delay, the detonator seat explodes, detonating the flexible cutting cable. The flexible cutting cable generates a shaped charge jet to decompose the casing of the explosive, and the high-pressure gas generated by the explosive is released to complete the safe destruction of the explosive.

[0026] Compared with the prior art, the present invention can at least achieve the following beneficial effects:

[0027] 1. The destruction system for the explosive with a casing provided by the present invention uses high-energy combustion to destroy the explosive, without using dangerous goods such as detonators and explosives, improving the safety of destruction; among them, the combustion agent has a high heat release and strong melting-through ability after ignition; during destruction, the controllable high-temperature flame generated by the combustion of the combustion agent is used to burn the outer shell of the explosive, which can not only melt the outer shell of the explosive at high temperature, but also make the gunpowder inside the explosive burn at high temperature. The outer shell is decomposed by the cutting device, and the gunpowder will burn stably without explosion, with relatively small destructiveness and no secondary pollution to the environment.

[0028] 2. The destruction system for the explosive with a casing provided by the present invention destroys landmines or unexploded ordnance by fixing the combustion component on the support component, without moving or contacting the explosive, with simple operation, low environmental requirements and high safety factor; moreover, the upper buckle and the lower buckle can flexibly adjust the distance between the combustion component and the explosive by adjusting the height and angle of the combustion component, supporting the combustion destruction of different types of explosives and expanding the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a destruction system for shelled explosives provided by an embodiment of the present invention.

[0031] Figure 2 It is a schematic structural diagram of a combustion device.

[0032] Figure 3 It is a schematic structural diagram of a fixed seat. Specific embodiments

[0033] The following further describes the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0034] Embodiment 1:

[0035] This embodiment introduces a destruction system for shelled explosives, as shown in Figure 1 、 Figure 2 , which includes a combustion device 1, a cutting device 2, and an ignition initiator 3.

[0036] The combustion device 1 includes: a combustion component 10, an electric ignition element 11, and a support component 12.

[0037] Among them, the combustion component 10 includes: a charge cartridge and a combustion agent 101 disposed in the charge cartridge. A spout 102 is provided below the charge cartridge, and the spout 102 is used to eject flames after the combustion agent is ignited. The electric ignition element 11 includes: a wire 111, a transducer 112, and an ignition charge 113. One end of the wire 111 is connected to the transducer 112, and the transducer 112 is buried in or in contact with the ignition charge 113. The other end of the wire 111 extends out of the charge cartridge, and the ignition charge 113 is disposed on the end face of the combustion agent 101 facing the spout direction. The transducer 112 is used to convert the current input by the wire into heat to ignite the ignition charge. The ignition charge is used to ignite the combustion agent. The support component 12 is used to clamp the combustion component 10 and control the height and angle of the spout.

[0038] The cutting device 2, as shown in Figure 3As shown in the figure, it includes: a fixed seat 20, a flexible cutting cable 21, a magnet 22, and a detonator seat 23. A flexible cutting cable 21 is arranged on the fixed seat 20. A connecting seat 24 is also arranged on the fixed seat 20. A magnet 22 is arranged on the connecting seat 24. A detonator seat 23 is also arranged on the fixed seat 20. The detonator seat 23 is connected to the flexible cutting cable 21.

[0039] The ignition initiator 3 is used to start the detonator seat 23 and the electric ignition element 11.

[0040] Further, optionally, the fuel agent 101 includes iron oxide, aluminum powder, and barium nitrate. Among them, the barium nitrate accounts for 10% - 12% of the total mass of the iron oxide and aluminum powder, and the mass ratio of the iron oxide to the aluminum powder is 3:1.

[0041] Further, optionally, the flexible cutting cable 21 includes a flexible housing. An explosive charge is arranged inside the flexible housing. The explosive charge uses a high - power explosive with a detonation velocity not lower than 8000 m / s. The flexible housing is set as a lead - antimony alloy drug - carrying liner structure.

[0042] Further, optionally, the charge cartridge includes a combustion housing 103. An upper cover 104 is arranged at the top of the combustion housing 103. A flame - spraying head 102 is arranged at the bottom of the combustion housing 103. A sealing head 105 is arranged at the free end of the flame - spraying head 102.

[0043] Further, optionally, the sealing head 105 is provided with an O - ring 106 to further enhance the sealing performance of the charge cartridge.

[0044] Further, optionally, a connecting part 107 is arranged on the charge cartridge.

[0045] Further, optionally, the magnet 22 uses a magnet with switchable magnetism.

[0046] Further, optionally, the support component 12 includes: a support rod 121. A base 122 is arranged at the bottom of the support rod 121. An upper buckle 123 and a lower buckle 124 are arranged on the support rod 121. The upper buckle 123 is used to connect with the connecting part 107 on the charge cartridge, and the lower buckle 124 is used to clamp the flame - spraying head 102 of the charge cartridge.

[0047] Further, optionally, the ignition powder 113 includes black powder and a nitrocotton sheet 1131 coated with black powder.

[0048] Further, optionally, the transducer element 112 uses nickel - chromium wire, constantan wire, or tungsten wire, nickel - chromium thin film, or semiconductor thin film. Two poles of the transducer element are respectively led out with wires 111.

[0049] Further, optionally, the charge uses cyclonite, octogen or hexanitrostilbene; the angle of the liner structure is 45 to 60 degrees.

[0050] Further, optionally, the spout 102 has a frustum structure with a trapezoidal axial cross-section.

[0051] Embodiment 2:

[0052] This embodiment introduces the working principle of a destruction system for a sheathed explosive. A sealing paper is provided on the inner wall of the combustion casing 103. By wrapping the combustion agent, the combustion agent is constrained within the combustion casing, which can keep the combustion agent dry and maintain the reliability of the performance of the combustion agent under suitable storage conditions.

[0053] A head is detachably connected to the spout head, and an O-ring is provided on the head. The head can be disassembled only when the destruction system is used.

[0054] The transducer element is made of a nickel-chromium alloy heating resistance wire. This kind of resistance wire has a high resistivity, good surface oxidation resistance, and a high temperature grade. It can have high strength, good workability and weldability at high temperatures. Therefore, when in use, a current is set between 2200 mA and 3300 mA, and after a few seconds of power-on, the bare resistance wire can be heated to a high temperature, which is sufficient to ignite black powder and thus ignite the combustion agent 25. Among them, the wire diameter of the bare resistance wire can be set to 0.55 mm, the resistance per meter is 6 ohms, and it is wound 5 times around a cylinder with a diameter of 5 mm.

[0055] In this embodiment, the explosive refers to various sheathed explosives such as landmines. Since the casing of the landmine is made of steel and usually has a thickness of 2 mm, the combustion agent filled in the combustion component is the key in the combustion destruction process. Through appropriate materials and ratios, the flame temperature generated after the combustion agent is ignited should be higher than the melting temperature of steel, so as to burn through the 2-mm-thick steel material. Specifically, in order to ensure reaching the corresponding technical indicators, the composition of the combustion agent 25 includes iron oxide with a mass ratio of 67.5%, aluminum with a mass ratio of 22.5%, and barium nitrate with a mass ratio of 10%. And the combustion agent 25 is extruded into a columnar structure with a diameter of 35 mm, a height of 70 mm, and a pressing density of 1.26 g / cm 3 in the cartridge case; such a filling amount of the combustion agent in the cartridge case not only has a high heat release, can generate effective slag to burn through the metal casing, thus meeting the requirement of burning through the 2-mm-thick steel material; but also has a suitable pressing density, a mild reaction rate, and a more gentle heat transfer, and will not produce detonation.

[0056] The destruction system for shelled explosives provided in this embodiment uses high-energy combustion to destroy explosives, eliminating the need to use dangerous goods such as detonators and explosives, thereby improving the safety of destruction. Among them, the combustion agent generates a high amount of heat and has strong melting-through ability after ignition. During destruction, the controllable high-temperature flame generated by the combustion of the combustion agent is used to burn the shell of the explosive through the flame nozzle. This not only causes the shell of the explosive to melt at high temperature but also makes the gunpowder inside the explosive burn due to the high temperature. Additionally, the shelled explosive is cracked by the flexible cutting cable of the cutting device, and the gunpowder will burn stably without explosion, with relatively less destructiveness and no secondary pollution to the environment.

[0057] Embodiment 3:

[0058] This embodiment introduces a destruction method for a destruction system of shelled explosives, including the following steps:

[0059] Step S1: Set the support component on one side of the explosive to be destroyed, and adjust the distance between the upper buckle and the lower buckle to match the size of the combustion component.

[0060] Step S2: Install the combustion component on the upper buckle and the lower buckle, and adjust the angle of the flame nozzle to align with the shell of the explosive.

[0061] Step S3: Connect the ignition initiator to the detonator seat and the wire respectively to form a control circuit.

[0062] Step S4: Set the cutting device on the explosive through the fixing seat and further adsorb it on the explosive by a magnet.

[0063] Step S5: After pressing the detonation button of the ignition initiator, the ignition initiator discharges electricity to the electric ignition element and the detonator seat simultaneously. When the current passes through the electric ignition element, the energy conversion element converts electrical energy into heat energy, igniting the ignition agent, and then igniting the combustion agent. The flame generated by the combustion agent is sprayed through the flame nozzle and burns through the shell of the explosive, thus igniting the explosive inside. When the current passes through the detonator seat after a certain time delay, the detonator seat explodes, detonating the flexible cutting cable. The flexible cutting cable generates a shaped charge jet to decompose the shell of the explosive, and the high-pressure gas generated by the explosive is released to complete the safe destruction of the explosive.

[0064] It should be noted that before performing step S2, the support component and the combustion component need to be prepared in advance, and the head at the bottom of the combustion component needs to be opened. In addition, the distance between the flame nozzle and the shell of the explosive can be set to 10 millimeters to 20 millimeters to burn the shell of the explosive with the outermost flame with the highest temperature.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0066] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0067] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A destruction system for shelled explosives, characterized in that, It includes a combustion device, a cutting device and an ignition initiator; The combustion device includes: a combustion component, an electric ignition element and a support component; Among them, the combustion component includes: a charge cartridge and a combustion agent arranged in the charge cartridge, and a spout is arranged below the charge cartridge; the electric ignition element includes: a wire, a transducer and ignition powder, one end of the wire is connected to the transducer, the transducer is buried in or in contact with the ignition powder, the other end of the wire extends out of the charge cartridge, and the ignition powder is in contact with the combustion agent; the transducer is used to convert the current input by the wire into heat to ignite the ignition powder; the ignition powder is used to ignite the combustion agent; the support component is used to clamp the combustion component and control the height and angle of the spout; The cutting device includes: a fixed seat, a flexible cutting cable, a magnet and a detonator seat, a flexible cutting cable is arranged on the fixed seat, a connecting seat is also arranged on the fixed seat, a magnet is arranged on the connecting seat, and a detonator seat is also arranged on the fixed seat, and the detonator seat is connected to the flexible cutting cable; The ignition initiator is used to start the detonator seat and the electric ignition element.

2. The destruction system for shelled explosives according to claim 1, characterized in that, The combustion agent includes iron oxide, aluminum powder and barium nitrate. Among them, barium nitrate accounts for 10% - 12% of the total mass of iron oxide and aluminum powder, and the mass ratio of iron oxide to aluminum powder is 3:

1.

3. The destruction system for shelled explosives according to claim 1, characterized in that, The flexible cutting cable includes a flexible housing, and a charge is arranged in the flexible housing. The charge uses a high explosive with a detonation velocity not lower than 8000 m / s, and the flexible housing is arranged as a lead-antimony alloy charge-containing liner structure.

4. The destruction system for shelled explosives according to claim 1, characterized in that, The charge cartridge includes a combustion housing, an upper cover is arranged at the top of the combustion housing, a spout head is arranged at the bottom of the combustion housing, and a sealing head is arranged at the free end of the spout head.

5. The destruction system for shelled explosives according to claim 4, characterized in that, The sealing head is provided with an O-ring to further enhance the sealing of the charge cartridge.

6. The destruction system for shelled explosives according to claim 1, characterized in that, The magnet uses a magnet with switchable magnetism.

7. The destruction system for shelled explosives according to claim 1, characterized in that, The ignition powder includes black powder and a nitrocellulose sheet coated with black powder.

8. The destruction system for shelled explosives according to claim 1, characterized in that, The transducer uses nickel-chromium wire, constantan wire or tungsten wire, nickel-chromium thin film or semiconductor thin film; two poles of the transducer are respectively led out with wires.

9. The destruction system for the in-shell explosive according to claim 3, characterized in that, The charge uses cyclotrimethylenetrinitramine, octogen or hexanitrostilbene; the angle of the liner structure is 45 - 60 degrees.

10. The destruction method of the destruction system for shelled explosives according to any one of claims 1 to 9, characterized in that, It includes the following steps: Step S1: Set the support component on one side of the explosive to be destroyed, and adjust the distance between the upper buckle and the lower buckle to cooperate with the size of the combustion component; Step S2: Install the combustion component on the upper buckle and the lower buckle, and adjust the spout angle to align with the shell of the explosive; Step S3: Connect the ignition initiator to the detonator seat and the wire respectively to form a control circuit; Step S4: Set the cutting device on the explosive through the fixed seat and further adsorb it on the explosive through the magnet; Step S5: Press the ignition detonator's detonation button. The ignition detonator discharges electricity to both the electric ignition element and the detonator socket simultaneously. When the current passes through the electric ignition element, the transducer converts electrical energy into heat energy to ignite the ignition agent, and then the combustion agent is ignited. The flame generated by the combustion agent is ejected through the spout and burns through the casing of the explosive, thus igniting the explosive inside. When the current passes through the detonator socket after a time delay, the detonator socket explodes, detonating the flexible cutting cable. The flexible cutting cable generates a shaped charge jet to decompose the casing of the explosive, and the high-pressure gas generated by the explosive is released to complete the safe destruction of the explosive.

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