A thermal destruction device and a control method thereof

Abstract

The application provides a heat destruction device and a control method thereof, wherein the bullet head section, the heat melting section and the gunpowder section are connected in sequence, the gunpowder section is used for generating forward kinetic energy, so that the heat melting section is separated from the gunpowder section; the heat melting section comprises a power supply, an electrode and a graphite felt, one end of the power supply is installed in the bullet head section, a control unit is connected with the power supply, the electrode is installed at two ends of the graphite felt, the electrode is connected with the power supply, the power supply transmits electricity to the electrode so as to heat the graphite felt, the graphite felt generates high temperature and diffuses the temperature to the outside. The application does not simply rely on the kinetic energy of the bullet head for destruction, and the heat melting function is added, so that directional and fixed-point little-loss destruction can be realized, the application has the characteristics of simple structure, low requirement on manufacturing materials, low processing cost and small processing difficulty.

Description

Technical Field

[0001] This invention belongs to the fields of emergency technology and fire protection, and particularly relates to a thermal destruction device and its control method. Background Technology

[0002] In firefighting or other emergency scenarios, specialized breaching devices are often needed to damage targets, such as security doors, safes, windows, and other sturdy building materials, to achieve rescue or demolition objectives. Currently, most breaching devices employ launching, force-based breaching, or explosive methods. Launching devices rely on their own heavy weight or projectiles with excellent armor-piercing capabilities to maintain sufficient flight distance and destructive effect. To achieve the required destructive effect, high requirements are placed on the device's materials, structure, and shape. To ensure heavy weight, lead, depleted uranium alloys, or other composite materials are often used. Lead causes environmental pollution, and depleted uranium alloys are radioactive, both of which have a significant impact on the environment. Composite materials require processing methods such as compression molding, magnetron sputtering, and laser sputtering. Poor processing can lead to a decrease in the performance of the breaching device and is detrimental to the environment. The structural and shape requirements of breaching devices also present problems such as high processing costs and high processing difficulty. Using force-based breaching devices or explosive methods is costly, causes significant damage, and cannot achieve targeted, low-damage destruction. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems. To this end, the present invention proposes a thermal destruction device and its control method. The present invention has a simple structure, low manufacturing cost, and can achieve directional, point-based, and minimally damaging destruction.

[0004] The technical solution of this invention is:

[0005] A thermal destruction device includes a warhead section, a molten section, a propellant section, and a control unit;

[0006] The warhead section, the hot-melt section, and the gunpowder section are connected in sequence. The gunpowder section is used to generate forward kinetic energy, which causes the hot-melt section to separate from the gunpowder section.

[0007] The hot-melting section includes a power source, electrodes, and graphite felt. One end of the power source is installed inside the warhead section, and the control unit is connected to the power source. The electrodes are installed at both ends of the graphite felt and are connected to the power source. The power source transmits electricity to the electrodes to heat the graphite felt, causing the graphite felt to generate high temperature and diffuse the temperature to the outside.

[0008] The control unit includes a controller and an accelerometer;

[0009] The accelerometer is connected to the controller. The accelerometer detects acceleration and transmits it to the controller. When the acceleration increases instantaneously to a preset value, the controller controls the power supply to start turning on the power.

[0010] In the above scheme, the projectile segment includes a projectile and a projectile casing, and the projectile and the projectile casing are connected.

[0011] In the above scheme, the hot-melt section also includes a heat-insulating pad layer;

[0012] The graphite felt is sleeved outside the heat insulation pad, which encloses the power source and is attached to the non-functional surface of the electrode.

[0013] In the above scheme, the hot-melt section further includes a hot-melt outer shell;

[0014] The hot-melt outer shell is fitted over the graphite felt.

[0015] In the above scheme, the hot-melt outer shell material is a low-melting-point, easily ductile material.

[0016] The above scheme also includes a buffer layer;

[0017] The buffer layer comprises rock wool, fiber cement, and metal plate;

[0018] The control unit is installed between the hot-melt section and the gunpowder section, and rock wool, fiber cement and metal plate are wrapped around the control unit from the inside to the outside.

[0019] In the above scheme, the outer surface of the warhead segment is coated with a thermal adhesive layer.

[0020] A method for controlling a thermal destruction device includes the following steps:

[0021] When the accelerometer detects that the acceleration increases instantaneously to a preset value, the controller controls the power supply to start energizing. The power supply transmits current to the graphite felt through the electrodes, the temperature of the graphite felt rises, and the hot-melt outer shell melts after reaching the melting point, allowing the graphite felt to diffuse the temperature to the outside. The graphite felt continues to be heated for a preset time.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the present invention does not rely solely on the kinetic energy destruction of the projectile, but incorporates a thermal melting function, thereby enabling directional and targeted low-damage destruction; the present invention has a simple structure, low requirements for manufacturing materials, and features low processing cost and low processing difficulty. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the thermal destruction device according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic side view of the hot melt section according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic front view of the hot melt section according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the buffer layer structure according to one embodiment of the present invention.

[0027] Figure 5 This is a state diagram of the thermal destruction device after entering the target according to an embodiment of the present invention.

[0028] Figure 6 This is a graph showing the average temperature change of the graphite felt surface according to one embodiment of the present invention.

[0029] In the diagram: 1-Projectile; 2-Projectile casing; 3-Fused outer casing; 4-Powder section casing; 5-Insulating pad; 6-Power supply; 7-Electrode; 8-Graphite felt; 9-Controller; 91-Rock wool; 92-Fiber cement; 93-Metal plate; 10-Accelerometer; 11-Buffer layer; 12-Powder chamber; 13-Detonator. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "front," "rear," "left," "right," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Figure 1 The diagram shows a preferred embodiment of the thermal destruction device, which includes a warhead section, a hot-melt section, a gunpowder section, and a control unit.

[0034] The warhead section, the hot-melt section, and the gunpowder section are connected in sequence. The gunpowder section is used to generate forward kinetic energy, causing the hot-melt section to separate from the gunpowder section. The device generates forward kinetic energy by triggering the propellant in the gunpowder section, causing the hot-melt section to separate from the gunpowder section.

[0035] like Figure 2 , 3 As shown, the hot-melt section includes a power supply 6, an electrode 7, and a graphite felt 8. One end of the power supply 6 is installed inside the projectile section, and the control unit is connected to the power supply 6. The electrode 7 is installed at both ends of the graphite felt 8 and is connected to the power supply 6. The graphite felt 8 is connected to the projectile section so that the position of the graphite felt 8 is relatively fixed. The power supply 6 transmits electricity to the electrode 7 to heat the graphite felt 8, causing the graphite felt 8 to generate high temperature and diffuse the temperature to the outside.

[0036] Preferably, the projectile segment includes a projectile 1 and a projectile casing 2, which are connected. The projectile casing 2 has an installation plate machined inside to facilitate the fixing of the power supply 6 and the graphite felt 8.

[0037] Preferably, the projectile 1 is conical, and the lower surface of the projectile 1 is fixed to the upper surface of the projectile shell 2.

[0038] Preferably, the gunpowder section includes a gunpowder section cartridge case 4, a gunpowder chamber 12, and a detonator 13. The gunpowder chamber 12 is located inside the gunpowder section cartridge case 4, and the detonator 13 is installed at the actuating end of the gunpowder section cartridge case 4. The gunpowder chamber 12 is filled with gunpowder, and the device generates forward kinetic energy by striking the detonator 13 to ignite the gunpowder.

[0039] According to one embodiment of the present invention, preferably, the power stored in the power source 6 can power the graphite felt 8 for at least 60 seconds, thereby increasing the success rate of destroying the target.

[0040] Preferably, the detonator 13, the bullet casing 2, and the gunpowder section casing 4 are all made of common cartridge case materials such as brass or nickel-plated copper.

[0041] According to one embodiment of the present invention, preferably, a graphite felt 8 with dimensions of 45x30x3mm is subjected to a current of 60A and a current density of 6.7. A / m 2 Below, the average temperature change curve of the graphite felt 8 surface measured using an infrared thermometer is shown in the figure. Figure 6 As shown.

[0042] According to one embodiment of the present invention, preferably, the radial thickness of the graphite felt 8 is 0.5 to 1 mm.

[0043] The heating principle of graphite felt 8: During heating, heat is mainly transferred through thermal radiation from the graphite felt 8. As the temperature of the graphite felt 8 increases, the heat flux also increases, and the efficiency of the heat transfer process also increases. Under energized conditions, the temperature of the graphite felt can exceed 2000℃, therefore, the heat flux of the graphite felt can reach 400W / cm². 2 above.

[0044] The most significant feature of graphite felt 8 is its simplicity and efficiency. Graphite felt 8 is a graphite fiber material that inherently possesses the characteristics of graphite, such as high temperature resistance and good electrical conductivity. When a direct current is applied to graphite felt 8, it will generate approximately 10... 3 ~10 4 It heats up rapidly at a rate of ℃ / min, with the core region reaching temperatures as high as 3000℃, creating a high-temperature field in its vicinity. Even after power is cut off, the graphite felt 8 will still heat up at a rate of 10℃ / min. 4 Rapid cooling at a cooling rate of ℃ / min.

[0045] Preferably, the hot-melt section further includes a heat-insulating pad 5, which is a hollow cylinder. The outer surface of the heat-insulating pad 5 is tightly attached to the inner wall of the warhead shell 2 to prevent the device from vibrating during movement.

[0046] The graphite felt 8 is sleeved on the outside of the heat insulation pad 5, which wraps the power supply 6 inside. The heat insulation pad 5 is in contact with the non-active surface of the electrode 7, so that the heat insulation pad 5 protects the power supply 6 from the high temperature generated by the graphite felt 8 and isolates the electrode 7 from other conductors.

[0047] Preferably, the heat insulation pad 5 is made of mullite material to improve heat insulation performance.

[0048] According to one embodiment of the present invention, preferably, the electrode 7 is divided into positive and negative poles and is in the shape of a ring for easy adaptation.

[0049] Preferably, the hot-melt section further includes a hot-melt outer shell 3;

[0050] The hot-melt outer shell 3 is fitted over the graphite felt 8, and the graphite felt 8 is heated to melt the hot-melt outer shell 3.

[0051] Preferably, the hot-melt shell 3 has a certain gap with both the electrode 7 and the graphite felt 8 to prevent current leakage from the electrode 7 or the graphite felt 8, which would cause the hot-melt shell 3 to become conductive, thereby dispersing the power and failing to achieve the intended effect.

[0052] According to one embodiment of the present invention, preferably, the wall thickness of the hot-melt outer shell 3 is thinner than that of the projectile shell 2 and the gunpowder section shell 4, and the wall thickness of the projectile shell 2 and the gunpowder section shell 4 is the same, so that the overall center of gravity of the device is balanced.

[0053] Preferably, the hot-melt outer shell 3 has a protrusion and the projectile shell 2 has a groove, and the protrusion on the hot-melt outer shell 3 cooperates with the groove on the projectile shell 2.

[0054] Preferably, a sealant is applied between the hot-melt outer shell 3 and the gunpowder section cartridge 4, and a sealant is applied between the gunpowder section cartridge 4 and the detonator 13 to improve the stability of the device.

[0055] Preferably, the material of the hot-melt outer shell 3 is a low-melting-point, easily ductile material, such as a tin-lead alloy.

[0056] Preferably, the control unit includes a controller 9 and an accelerometer 10;

[0057] The accelerometer 10 is connected to the controller 9. The accelerometer 10 detects acceleration and transmits it to the controller 9. When the acceleration increases instantaneously to a preset value, the controller 9 controls the power supply 6 to start powering on.

[0058] Preferably, it also includes a buffer layer 11;

[0059] like Figure 4 As shown, the buffer layer 11 includes rock wool 91, fiber cement 92 and metal plate 93;

[0060] The control unit is installed between the hot-melt section and the gunpowder section. Rock wool 91, fiber cement 92 and metal plate 93 are wrapped around the control unit from the inside to the outside to protect the control unit from damage by the gunpowder section.

[0061] Preferably, the metal plate 93 is a galvanized steel plate with high strength, which protects the control unit from damage by the gunpowder section.

[0062] Preferably, the outer surface of the projectile segment is coated with a thermal adhesive layer. The thermal adhesive layer does not produce stickiness at room temperature. When the device is working, the temperature of the projectile segment increases due to friction with the air. When the temperature rises to the activation temperature of the thermal adhesive layer, it produces stickiness, causing the projectile segment to adhere to the target surface and achieve a fixing effect.

[0063] A method for controlling a thermal destruction device includes the following steps:

[0064] When the accelerometer 10 detects that the acceleration increases instantaneously to a preset value, the controller 9 controls the power supply 6 to start powering on. The power supply 6 transmits current to the graphite felt 8 through the electrode 7. The temperature of the graphite felt 8 rises, and the hot-melt outer shell 3 melts after reaching its melting point, causing the graphite felt 8 to diffuse the temperature to the outside. The graphite felt 8 continues to heat for a preset time until the target object reaches its melting point. The target is melted in large quantities and loses its original function, thereby achieving a destructive effect.

[0065] Preferably, the preset duration can be set by pre-selecting a power source 6 with a corresponding battery capacity.

[0066] Example 1

[0067] After the target is identified, detonator 13 ignites the gunpowder in the powder magazine 12. The force generated by the intense combustion of the gunpowder separates the propellant cartridge case from the molten section and propels the projectile towards the target. Under the influence of inertia, the device continues to fly until it hits the target. Accelerometer 10 detects a sudden and sharp increase in acceleration. Controller 9 in buffer layer 11 receives the signal and starts powering on power supply 6. Electrode 7 connected to power supply 6 supplies current to graphite felt 8. The current flows evenly through graphite felt 8 with a current density of 6. A / m 2 ~7 A / m 2 The temperature of the graphite felt 8 reaches 2000℃ within 10 seconds. When the target surface material is relatively soft, the hard projectile 1 penetrates the target surface at a very high speed to complete the fixation. When the target surface material is relatively hard, the destruction device adheres to the target surface through the thermal adhesive layer on the outer surface of the projectile 1. The graphite felt 8 reaches a maximum temperature of over 2000℃, quickly melting the entire thermal molten outer shell 3 and continuously heating the target to its melting point. The target is largely melted and loses its original function, achieving the destruction effect. When the power supply 6 is completely depleted, the device ends its operation.

[0068] Workflow:

[0069] Striking the detonator 13 ignites the gunpowder, thus generating forward kinetic energy for the device, such as... Figure 5 As shown, the gunpowder section of the projectile separates from the hot-melt section. Under the influence of inertia, the device continues to fly until it hits the target. When the accelerometer 10 detects that the acceleration has increased instantaneously to the preset value range, the controller 9 controls the power supply 6 to start powering on. The electrode 7 connected to the power supply 6 supplies current to the graphite felt 8, and the graphite felt 8 begins to heat up. After reaching the preset time, the temperature rises to the maximum, and the hot-melt outer shell 3 is completely melted. The hard projectile 1 penetrates the target surface at a very high speed or adheres to the target surface by relying on the thermal adhesive layer on the outer surface. The graphite felt 8 transfers a large amount of heat energy to the external target through thermal radiation and thermal conduction, causing the target to melt and lose its original function, thereby achieving the destructive effect. When the power supply 6 is completely depleted, the device ends its operation.

[0070] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0071] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A thermal destruction device, characterized in that, Includes the warhead section, the thermal melting section, the propellant section, and the control unit; The warhead section, the hot-melt section, and the gunpowder section are connected in sequence. The gunpowder section is used to generate forward kinetic energy, which causes the hot-melt section to separate from the gunpowder section. The hot-melting section includes a power source (6), an electrode (7), and a graphite felt (8). One end of the power source (6) is installed inside the projectile section. The control unit is connected to the power source (6). The electrode (7) is installed at both ends of the graphite felt (8). The electrode (7) is connected to the power source (6). The power source (6) transmits electricity to the electrode (7) to heat the graphite felt (8), causing the graphite felt (8) to generate high temperature and diffuse the temperature to the outside. The control unit includes a controller (9) and an accelerometer (10); The accelerometer (10) is connected to the controller (9). The accelerometer (10) detects acceleration and transmits it to the controller (9). When the acceleration increases instantaneously to a preset value, the controller (9) controls the power supply (6) to start powering on.

2. The thermal destruction device according to claim 1, characterized in that, The projectile section includes a projectile (1) and a projectile casing (2), and the projectile (1) and the projectile casing (2) are connected.

3. The thermal destruction device according to claim 1, characterized in that, The hot melt section also includes a heat insulation pad layer (5); The graphite felt (8) is sleeved on the outside of the heat insulation pad (5), the heat insulation pad (5) wraps the power source (6) inside, and the heat insulation pad (5) is attached to the non-functional surface of the electrode (7).

4. The thermal destruction device according to claim 3, characterized in that, The hot-melt section also includes a hot-melt outer shell (3); The hot-melt outer shell (3) is fitted over the graphite felt (8).

5. The thermal destruction device according to claim 4, characterized in that, The material of the hot-melt shell (3) is a low-melting-point, easily ductile material.

6. The thermal destruction device according to claim 1, characterized in that, It also includes a buffer layer (11); The buffer layer (11) includes rock wool (91), fiber cement (92) and metal plate (93). The control unit is installed between the hot melt section and the gunpowder section, and rock wool (91), fiber cement (92) and metal plate (93) are wrapped around the control unit from the inside to the outside.

7. The thermal destruction device according to claim 1, characterized in that, The outer surface of the warhead section is coated with a heat-adhesive layer.

8. A control method for a thermal destruction device according to any one of claims 1-7, characterized in that, Includes the following steps: When the accelerometer (10) detects that the acceleration increases instantaneously to a preset value, the controller (9) controls the power supply (6) to start powering on. The power supply (6) transmits current to the graphite felt (8) through the electrode (7). The temperature of the graphite felt (8) rises, and the hot melt shell (3) melts after reaching the melting point, so that the graphite felt (8) diffuses the temperature to the outside. The graphite felt (8) continues to heat for a preset time.

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