Destroying device and destroying method for underwater semi-buried explosives

Abstract

The invention discloses a destroying device and destroying method for underwater semi-buried explosives, and belongs to the technical field of explosive destroying. The device comprises an energy-gathered cutting component, a timing detonation fuze component and a positioning component, the energy-gathered cutting part comprises an energy-gathered shell and a metal shaped charge cover, and the metal shaped charge cover divides the interior of the energy-gathered shell into a first space and a second space which are filled with main charge; the timing detonating fuse component is used for igniting the main charge according to a preset duration after the switch is started; the positioning part is a magnetic attraction part and comprises a magnetic attraction shell and a permanent magnet capable of rotating in the magnetic attraction shell, and when the permanent magnet rotates to a designated position, the magnetic attraction part attracts the energy-gathered cutting part to the surface of the explosive in the axis direction of the explosive. The energy-gathered cutting part is attracted to the surface of the exposed side of the explosive in a magnetic attraction mode in the positioning part, the explosive does not need to be moved or extra tools do not need to be used, operation is easy, timing detonation of the underwater semi-buried explosive is achieved, and safety of operators is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of explosive destruction, and particularly relates to a destruction device and a destruction method for underwater semi-buried explosives. Background Art

[0002] Due to reasons such as war, engineering construction, military training or exercises, a large number of ammunitions are left in waters without exploding. These underwater unexploded ammunitions may explode when disturbed, which will not only cause casualties and property losses, but also damage the marine environment.

[0003] In view of the above problems, the prior art usually digs out the unexploded ammunitions completely before destruction. However, since the unexploded ammunitions have been buried in soil or waters for a long time, completely digging out the ammunitions may trigger the fuse, thus increasing the uncontrollable risk. Therefore, how to safely destroy the underwater semi-buried unexploded ammunitions is an urgent problem to be solved at present. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a destruction device and a destruction method for underwater semi-buried explosives. By means of the magnetic attraction method in the positioning component, the shaped charge cutting component is adsorbed on the surface of the exposed side of the explosive, without moving the explosive or using additional tools, with simple operation, realizing the timed detonation of the underwater semi-buried explosive and ensuring the safety of the operators.

[0005] To achieve the above purpose, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a destruction device for underwater semi-buried explosives, including a shaped charge cutting component, a timed detonation fuse component and a positioning component; The shaped charge cutting component includes a shaped charge housing and a metal liner disposed in the shaped charge housing. The metal liner divides the internal space of the shaped charge housing into a first space and a second space, and the first space is filled with main charge; The timed detonation fuse component is disposed on the shaped charge housing and is used for igniting the main charge in the shaped charge housing according to a preset duration after the start switch is turned on; The positioning component is a magnetic attraction component disposed on both sides of the shaped charge housing. The magnetic attraction component includes a magnetic attraction housing and a permanent magnet that can rotate in the magnetic attraction housing. The magnetic attraction component is used for adsorbing the shaped charge cutting component to the surface of the explosive along the axis direction of the semi-buried explosive when the permanent magnet rotates to a specified position.

[0006] In combination with the first aspect, optionally, the magnetic attraction component includes a first magnetic attraction component and a second magnetic attraction component. The first magnetic attraction component is connected to the first end face of the energy concentrating shell along the axis direction of the explosive, and the second magnetic attraction component is connected to the second end face of the energy concentrating shell along the axis direction of the explosive.

[0007] In combination with the first aspect, optionally, a soft iron layer and a brass layer are provided inside the magnetic attraction shell. The soft iron layer is arranged on the inner wall of the magnetic attraction shell, the permanent magnet can rotate within the soft iron layer, and the brass layer is arranged in the direction perpendicular to the surface of the explosive of the magnetic attraction shell.

[0008] In combination with the first aspect, optionally, a knob for connecting with the permanent magnet is provided on the magnetic attraction shell, which is used to control the rotation position of the permanent magnet within the soft iron layer; When the permanent magnet is in the first position, the north and south poles are in a horizontal posture, and the magnetic attraction component can adsorb on the surface of the explosive; when the permanent magnet is in the second position, the north and south poles are in a vertical posture and point to the distribution direction of the brass layer, and the magnetic attraction component can be separated from the surface of the explosive.

[0009] In combination with the first aspect, optionally, the positioning component can also be a support component including a support frame and a plurality of support rods. The support frame is connected to the energy concentrating shell, and the plurality of support rods are all arranged on one side of the support frame. The support component is used to insert the plurality of support rods into the circumferential soil layer of the explosive along the axis direction of the semi-buried explosive, so that the energy concentrating cutting component contacts the surface of the explosive.

[0010] In combination with the first aspect, optionally, a groove is provided on the support frame, and a pressing mechanism is provided in the groove. The pressing mechanism fixes the energy concentrating cutting component on the support frame by connecting with the groove.

[0011] In combination with the first aspect, optionally, the support frame is a rectangular frame body with a pair of long sides and a pair of short sides. The groove is arranged on one long side, and the length of the pair of short sides is not less than the length of the energy concentrating cutting component.

[0012] In combination with the first aspect, optionally, the cross-section of the metal liner is V-shaped or arc-shaped and extends along the axis direction of the semi-buried explosive. The first space is arranged on the convex side of the metal liner, and the second space is arranged on the concave side of the metal liner.

[0013] In the second aspect, the present invention also provides a destruction method for the aforementioned destruction device for underwater semi-buried explosives, including the following steps: Step S1: Use the magnetic attraction component along the axis direction of the underwater semi-buried explosive, and when the permanent magnet rotates to a specified position, fix the energy concentrating cutting component on the surface of the exposed side of the explosive. Step S2: Activate the timed detonation fuse component; Step S3: Wait for the timed detonation fuse component to trigger and ignite the main charge in the shaped charge cutting component, thereby combining with the metal liner to form a metal jet to destroy the underwater semi-buried explosive.

[0014] In a third aspect, the present invention also provides a destruction method for the aforementioned destruction device for underwater semi-buried explosives, including the following steps: Step A1: Fix the shaped charge cutting component on the support frame of the support component, and then insert the support rod into the circumferential soil layer of the explosive along the axis direction of the underwater semi-buried explosive, so that the shaped charge cutting component contacts the surface of the exposed side of the explosive; Step A2: Activate the timed detonation fuse component; Step A3: Wait for the timed detonation fuse component to trigger and ignite the main charge in the shaped charge cutting component, thereby combining with the metal liner to form a metal jet to destroy the underwater semi-buried explosive.

[0015] Compared with the prior art, the present invention can at least achieve the following beneficial effects: 1. For the explosive with a steel shell, the destruction device for underwater semi-buried explosives provided by the present invention adsorbs the shaped charge cutting component on the surface of the exposed side of the explosive through the magnetic adsorption method in the positioning component, without moving the explosive or using additional tools, with simple operation, realizing the timed detonation of underwater semi-buried explosives and ensuring the safety of operators; 2. For the explosive with a non-steel shell, the destruction device for underwater semi-buried explosives provided by the present invention inserts the support component in the positioning component into the circumferential soil layer of the explosive, so that the shaped charge cutting component contacts the surface of the exposed side of the explosive, without moving the explosive or using additional tools, with simple operation, realizing the timed detonation of underwater semi-buried explosives and ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used 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 also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of a destruction device for underwater semi-buried explosives with a magnetic adsorption component as the positioning component provided by an embodiment of the present invention; Figure 2 is a schematic radial cross-sectional structure diagram of a shaped charge cutting component provided by an embodiment of the present invention; Figure 3It is a schematic structural diagram of a magnetic attraction component when a permanent magnet is in the first position provided by an embodiment of the present invention; Figure 4 It is a schematic structural diagram of a magnetic attraction component when a permanent magnet is in the second position provided by an embodiment of the present invention; Figure 5 It is a schematic structural diagram of a destruction device for underwater semi-buried explosives with a positioning component as a support component provided by an embodiment of the present invention; Figure 6 It is a schematic structural diagram of a support frame provided by an embodiment of the present invention; Figure 7 It is a schematic radial cross-sectional structure diagram of a support component provided by an embodiment of the present invention.

[0018] In the figure: 1 - shaped charge cutting component; 11 - shaped charge housing; 12 - metal liner; 13 - main charge; 2 - timed detonation fuse component; 3 - magnetic attraction component; 301 - first magnetic attraction component; 302 - second magnetic attraction component; 31 - magnetic attraction housing; 32 - soft iron layer; 33 - permanent magnet; 34 - brass layer; 4 - support component; 40 - support frame; 401 - groove; 41 - support rod; 42 - pressing mechanism. Specific embodiments

[0019] The present invention will be further described below with reference to the accompanying 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.

[0020] Embodiment 1

[0021] This embodiment provides a destruction device for underwater semi-buried explosives, referring to Figure 1 , including a shaped charge cutting component 1, a timed detonation fuse component 2 and a positioning component. Among them, the shaped charge cutting component 1 is used to generate a metal jet to form an axial linear slit on the surface of the explosive; the timed detonation fuse component 2 is used to ignite the shaped charge cutting component 1 according to a preset duration after the start switch is turned on; the positioning component is used to fix the shaped charge cutting component 1 on the surface of the exposed side of the explosive by means of magnetic attraction or by inserting into the circumferential soil layer of the explosive, so as to avoid digging out the explosive buried in the soil layer and reduce the possible risks during the movement of the explosive.

[0022] In this embodiment, as Figure 2As shown in the figure, the shaped charge cutting component 1 includes a shaped charge housing 11, a metal liner 12 disposed within the shaped charge housing 11, and a main charge 13. Specifically, the shaped charge housing 11 is integrally cast and made of aluminum alloy with a thickness of 3 mm. The connection parts are fixed with screws and sealed with epoxy glue. The cross-section of the metal liner 12 can be set as a V shape or an arc shape. The cone angle of the V-shaped liner can be set as 80º or 120º. By fixedly connecting with the inner wall of the shaped charge housing 11, the internal space of the shaped charge housing 11 is divided into a first space on the convex side of the metal liner 12 and a second space on the concave side of the metal liner 12. Among them, the first space is filled with the main charge 13, and on the side of the second space opposite to the metal liner 12, the shaped charge housing 11 forms a cutting action surface that closely adheres to the surface of the explosive. In addition, the main charge 13 can be Composition B explosive with a pressing density of 1.7 g / cm 3 and a stand-off distance of 32 mm. Since the main charge 13 in the shaped charge cutting component 1 has a sealed air stand-off distance, it avoids the problem that the metal jet formed by the shaped charge effect prematurely contacts the water medium, resulting in a rapid decrease in the jet velocity and temperature and inability to reliably penetrate the thick explosive housing and detonate the explosive.

[0023] It should be noted that the shaped charge housing 11 can also be set as a symmetric split structure, and its inner wall can also be provided with a detachable baffle for supporting and sealing the two ends of the metal liner 12. In actual engineering applications, the structure or material of the shaped charge housing 11, the shape of the metal liner 12, and the composition of the main charge 13 can all be set according to the actual operating conditions to meet different task requirements.

[0024] Furthermore, combined with Figure 1 , the long axis of the shaped charge housing 11 is consistent with the axis direction of the semi-buried explosive. Therefore, the metal liner 12 can be extended along the long axis direction of the shaped charge housing 11. In addition, the metal liner 12 can be made of copper sheet with a thickness of 1.2 mm, and cooperate with the ignited main charge 13 to form an axial linear metal jet, so as to form a linear cut parallel to the axis direction on the surface of the explosive.

[0025] The destruction device for underwater semi-buried explosives provided by this embodiment is arranged along the axis direction of the semi-buried explosive through the shaped charge cutting component 1, and the cutting action surface fits the surface of the exposed side of the explosive, so that the formed linear cut is parallel to the axis direction of the explosive, which is beneficial to reducing the number of fragments and increasing the area of the fragments when causing the sympathetic detonation of the explosive. When the explosive sympathetic detonates, the explosive can be divided into left and right relatively scattered fragments with the linear cut as the boundary. The fragments in each scattered direction have a large area and a small number, and have a large resistance when moving in water. Therefore, it is easy to sink under the action of water resistance, resulting in a limited killing range formed by the fragments, thus improving the safety of destruction.

[0026] In some embodiments, reference Figure 1 The timed detonating fuse component 2 is connected to the energy-gathering shell 11 on the upper side of the energy-gathering cutting component 1, and is used to ignite the main charge 13 in the energy-gathering cutting component 1 according to a predetermined time after the switch is started, which can leave time for the operator to float to a safe area. Specifically, the timed detonating fuse component 2 includes a mechanical fuse, an electronic switch, a delay circuit, a detonating cord, and a battery. Among them, the mechanical fuse and the electronic switch are used to control the on-off state of the delay circuit; the delay circuit is used to delay the triggering of the detonating cord when it is turned on; the detonating cord is used to ignite the main charge when triggered; the battery can be a lithium battery, which supplies power to the detonating cord through the delay circuit.

[0027] As an optional embodiment, the mechanical safety can be a magnetic switch, which switches between the third position and the fourth position by rotating to control the position state of the conductive sheet. When the magnetic switch is switched to the third position, the conductive sheet is in the attracted position, and the delay circuit cannot be turned on by the electronic switch; when the magnetic switch is switched to the fourth position, the conductive sheet is in the released position, and the delay circuit can be turned on by the electronic switch. In addition, a flame detonator can be provided on the detonating tube to facilitate igniting the detonating tube when power is turned on; the delay circuit can also be connected to an indicator light to facilitate indicating the on / off state of the delay circuit.

[0028] Specifically, the timed detonation fuse component 2 is powered by its own battery, and plays a double insurance role through the electronic switch and mechanical insurance. When not in use, the magnetic switch is in the third position, that is, the isolated safety state; when the timed detonation fuse component 2 is combined with the energy-gathering cutting component 1, and the fuse needs to be started, the magnetic switch of the mechanical insurance is switched to the fourth position by rotation to release the first insurance. Then turn on the electronic switch, and it can be observed through the indicator light that the delay circuit is turned on, and after the delay circuit is delayed for a predetermined period of time, the detonation circuit begins to charge, and at this time, the flame detonator is energized to ignite the detonating tube, and finally ignite the main charge 13 in the energy-gathering shell 11.

[0029] It should be noted that when the timed detonation fuse component 2 is in use, its predetermined duration can be adjusted in multiple levels, namely 30 minutes, 1 hour and 2 hours, to be suitable for explosives of different sizes, thereby ensuring that the operator can evacuate to a safe area. In actual engineering applications, the delay duration set by the timed detonation fuse component 2 can be set according to actual operating conditions to adapt to different task requirements.

[0030] In this embodiment, the positioning component is a magnetic attraction component 3 that can adsorb and fix the energy-gathering cutting component 1 by magnetic attraction. Figure 1As shown, the magnetic attraction component 3 includes a first magnetic attraction component 301 and a second magnetic attraction component 302 that are respectively disposed on both sides of the long axis of the energy concentrating housing 11. Among them, the first magnetic attraction component 301 is connected to the first end surface in the long axis direction of the energy concentrating housing 11 by welding or bonding, and the second magnetic attraction component 302 is connected to the second end surface in the long axis direction of the energy concentrating housing 11 by welding or bonding. Therefore, when installing the energy concentrating cutting component 1, by controlling the positions of the first magnetic attraction component 301 and the second magnetic attraction component 302, the direction of the energy concentrating cutting component 1 can be controlled.

[0031] Specifically, in combination with Figure 3 and Figure 4 , the magnetic attraction component 3, that is, the first magnetic attraction component 301 and the second magnetic attraction component 302, both include a magnetic attraction housing 31 and a permanent magnet 33 that can rotate within the magnetic attraction housing 31. Among them, the magnetic attraction housing 31 is made of cast iron, and its inner wall forms a columnar cavity with an axis parallel to the axis direction of the explosive. A soft iron layer 32 is provided on the inner wall of the columnar cavity, and the permanent magnet 33 is arranged on the inner wall of the soft iron layer 32 and can rotate within the soft iron layer 32 so that the permanent magnet 33 is in a first position or a second position. In addition, a brass layer 34 is provided in the direction perpendicular to the surface of the explosive on the magnetic attraction housing 31.

[0032] Furthermore, a knob is provided on the outside of the magnetic attraction housing 31, and the knob is fixedly connected to the permanent magnet 33. By controlling the rotation angle of the knob, the rotation position of the permanent magnet 33 within the soft iron layer 32 can be controlled. As Figure 3 shown, when the permanent magnet 33 is in the first position, its north-south N-S poles are in a horizontal posture, and the magnetic induction lines pass through the magnetic attraction housing 31 from both ends, forming a magnetic attraction force on the surface of the explosive, and the magnetic attraction component 3 can be adsorbed on the surface of the explosive. Referring to Figure 4 , when the permanent magnet 33 is in the second position, its north-south N-S poles are in a vertical posture, the direction of the magnetic induction lines changes, and the magnetic attraction force on the surface of the explosive decreases, and the magnetic attraction component 3 can be separated from the surface of the explosive.

[0033] In some embodiments, referring to Figure 3 and Figure 4 , the permanent magnet 33 can be configured as a flat structure, and the north-south N-S poles can be arranged along the long axis direction. Among them, when the permanent magnet 33 is in the first position, the long axis direction is perpendicular to the distribution direction of the brass layer 34; when the permanent magnet 33 is in the second position, the long axis direction points to the distribution direction of the brass layer 34.

[0034] It should be noted that the explosive in this embodiment refers to a cylindrical explosive with a steel shell, so the cutting action surface on the energy-gathering shell 11 and the adsorption action surface on the magnetic shell 31 that contacts the explosive can both be configured as arc-shaped surfaces to better fit the arc-shaped surface of the cylindrical explosive. In actual engineering applications, the shapes of the cutting action surface and the adsorption action surface can be set according to actual operating conditions to meet different task requirements.

[0035] The destruction device for underwater semi-buried explosives provided in this embodiment, for explosives with steel shells, uses the magnetic suction component 3 in the positioning component to adsorb the energy-gathering cutting component 1 on the surface of the exposed side of the explosive along the axis direction of the semi-buried explosive when the permanent magnet 33 rotates to a specified position. This fixing method is simple and convenient, and the operator does not need to move the explosive underwater or use additional tools. During installation, it only needs to align the position and turn the two knobs on the magnetic suction shell 31 to complete the fixing. It is friendly to underwater operations and improves the safety of destruction.

[0036] Embodiment 2

[0037] This embodiment provides a device for destroying semi-buried explosives underwater, which is different from the first embodiment in that the positioning component can also be a support component 4 that supports and fixes the energy-gathering cutting component 1 by inserting it into the soil layer around the explosive. Figure 5 As shown, the support component 4 includes a support frame 40 connected to the energy-gathering shell 11 of the energy-gathering cutting component 1, wherein the support frame 40 is a rectangular frame having a pair of long sides and a pair of short sides, and the length of the pair of short sides is not less than the length of the energy-gathering cutting component 1, and specifically, the length of the short side is slightly greater than the length of the energy-gathering cutting component 1. In addition, a plurality of support rods 41 are provided at the bottom of the support frame 40, which are used to be inserted into the circumferential soil layer of the explosive so that the energy-gathering cutting component 1 on the support frame 40 contacts the exposed side surface of the explosive. In this embodiment, the number of support rods 41 is four, which are respectively provided at the connection between the long side and the short side of the support frame 40.

[0038] Further, combined with Figure 6 and Figure 7 A groove 401 is provided on one long side of the support frame 40, and a clamping mechanism 42 is provided in the groove 401. The clamping mechanism 42 may be a clamping screw connected to the groove 401 by threads, and the energy-gathering cutting component 1 may be fixed on the support frame 40 by placing the energy-gathering cutting component 1 on the inner side of the support frame 40 and tightening the clamping screw so that the clamping screw is pressed against the energy-gathering cutting component 1.

[0039] It should be noted that the explosives in this embodiment refer to explosives with non-steel shells, such as those with copper shells. In addition, the shaped charge cutting component 1, the support frame 40, and the pressing mechanism 42 can be pre-connected and fixed on the shore to avoid mistakes during underwater operations. In addition, since this device is applicable to underwater work, all components need to be made of waterproof materials.

[0040] For the destruction device for underwater semi-buried explosives provided in this embodiment, for explosives with non-steel shells, by inserting the support rods 41 of the positioning component along the axial direction of the semi-buried explosive into the circumferential soil layer of the explosive, the shaped charge cutting component 1 is brought into contact with the exposed surface of the explosive. This fixing method is simple and convenient, and the operator does not need to move the explosive or use additional tools underwater. During installation, only the positions of the shaped charge cutting component 1 and the exposed side of the explosive need to be aligned, and the support rods 41 are inserted into the soil layer to complete the fixing, which is friendly to underwater operations and improves the safety of destruction.

[0041] Embodiment III

[0042] This embodiment provides a method for destroying underwater semi-buried explosives. Using the destruction device described in Embodiment I, it mainly includes the following steps: Step S1: After the operator dives underwater with the destruction device to the position where the underwater semi-buried explosive is located and finds the exposed side of the target explosive; when the shell of the explosive is made of steel, use the magnetic attraction component 3 in the positioning component to rotate the permanent magnet 33 to a specified position along the axial direction of the explosive to fix the shaped charge cutting component 1 on the exposed surface of the explosive, and at the same time make the long axis direction of the shaped charge cutting component 1 consistent with the axial direction of the explosive; Step S2: After starting the timed detonating fuse component 2, the operator floats to a safe area within a predetermined time length; Step S3: Wait for the timed detonating fuse component 2 to trigger and ignite the main charge 13 in the shaped charge cutting component 1, so as to form a metal jet in combination with the metal liner 12 to destroy the underwater semi-buried explosive.

[0043] Specifically, in Step S1, when fixing the shaped charge cutting component 1 on the exposed surface of the explosive, first attach the cutting surface of the shaped charge cutting component 1 and the adsorption surface of the magnetic attraction housing 31 to the exposed surface of the explosive, and then rotate the knobs on the first magnetic attraction component 301 and the second magnetic attraction component 302 to rotate the permanent magnet 33 in the magnetic attraction housing 31 by ninety degrees from the second position to the first position, and the adsorption and fixing process can be completed.

[0044] Embodiment IV

[0045] This embodiment provides a method for destroying underwater semi-buried explosives. Using the destruction device described in Embodiment II, it mainly includes the following steps: Step A1: After the operator dives underwater with the destruction device to the location of the underwater semi-buried explosive and finds the exposed side of the target explosive; when the outer shell of the explosive is made of non-steel material, use the support member 4 fixedly connected with the shaped charge cutting member 1 in the positioning member to insert the support rod 41 into the circumferential soil layer of the explosive along the axial direction of the explosive, so that the shaped charge cutting member 1 contacts the surface of the exposed side of the explosive, and at the same time, the long axis direction of the shaped charge cutting member 1 is consistent with the axial direction of the explosive; Step A2: After starting the timed detonating fuse member 2, the operator floats to the safe area within the preset time length; Step A3: Wait for the timed detonating fuse member 2 to trigger and then ignite the main charge 13 in the shaped charge cutting member 1, so as to form a metal jet in combination with the metal liner 12 to destroy the underwater semi-buried explosive.

[0046] Specifically, in Step A1, when the shaped charge cutting member 1 contacts the surface of the exposed side of the explosive, first use the pressing mechanism 42 to fixedly connect the shaped charge cutting member 1 with the support frame 40 (this operation can be pre-performed on the shore), then align the long axis of the shaped charge cutting member 1 and the axial direction of the explosive, and insert the support rod 41 at the bottom of the support frame 40 into the soil layer around the explosive along the alignment direction, so that the shaped charge cutting member 1 adheres to the surface of the exposed side of the explosive, and the support and fixation process can be completed.

[0047] The destruction device and method for underwater semi-buried explosives provided by the embodiments of the present invention are different from the traditional conventional destruction methods: using a detonator for detonation and requiring the setting of a detonation circuit, not only the detonator needs to be waterproofed, but also the detonation circuit needs to be set over a long distance to ensure safety, resulting in cumbersome underwater operations, slow speed and low efficiency; even, the detonation circuit may fail to detonate when encountering water, and when the operator reinspects the circuit, it may put him in a dangerous situation. The present invention needs to use different positioning members according to the material type of the underwater explosive outer shell. By means of adsorbing to the surface of the explosive or inserting into the soil layer around the explosive by the positioning member, the shaped charge cutting member is fixed to the surface of the explosive, without moving the explosive or using additional tools, the operation is simple, the timed detonation of the underwater semi-buried explosive is realized, and the safety of the operator is guaranteed. This method is not only applicable to underwater exposed explosives, but also more applicable to underwater semi-buried explosives, thus avoiding digging out the buried explosives during destruction, reducing the possible risks during the movement of the explosive, and improving the safety of destruction.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "radial direction", "axial direction", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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, the 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.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, 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.

[0050] 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 of this technology, 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 device for destroying semi-buried explosives underwater, characterized in that: It includes energy-gathering cutting parts, timed detonating fuse parts and positioning parts; The energy-gathering cutting component comprises an energy-gathering shell and a metal charge liner arranged in the energy-gathering shell, wherein the metal charge liner divides the internal space of the energy-gathering shell into a first space and a second space, and the first space is filled with a main charge; The timed detonation fuse component is arranged on the energy-gathering shell, and is used to ignite the main charge in the energy-gathering shell according to a preset time after the switch is turned on; The positioning component is a magnetic component arranged on both sides of the energy-gathering shell, and the magnetic component includes a magnetic shell and a permanent magnet that can rotate in the magnetic shell. The magnetic component is used to adsorb the energy-gathering cutting component to the surface of the explosive along the axial direction of the semi-buried explosive when the permanent magnet rotates to a specified position.

2. The device for destroying underwater semi-buried explosives according to claim 1, characterized in that: The magnetic attraction component includes a first magnetic attraction component and a second magnetic attraction component. The first magnetic attraction component is connected to a first end surface of the energy gathering shell along the axis direction of the explosive, and the second magnetic attraction component is connected to a second end surface of the energy gathering shell along the axis direction of the explosive.

3. The device for destroying underwater semi-buried explosives according to claim 1, characterized in that: A soft iron layer and a brass layer are provided in the magnetic shell. The soft iron layer is arranged on the inner wall of the magnetic shell. The permanent magnet can rotate in the soft iron layer. The brass layer is arranged in a direction perpendicular to the surface of the explosive.

4. The device for destroying underwater semi-buried explosives according to claim 3, characterized in that: The magnetic shell is provided with a knob connected to the permanent magnet, and is used to control the rotation position of the permanent magnet in the soft iron layer; When the permanent magnet is in the first position, the north and south poles are in a horizontal posture, and the magnetic attraction component can be adsorbed on the surface of the explosive; when the permanent magnet is in the second position, the north and south poles are in a vertical posture and point to the distribution direction of the brass layer, and the magnetic attraction component can be detached from the surface of the explosive.

5. The device for destroying underwater semi-buried explosives according to claim 1, characterized in that: The positioning component can also be a supporting component including a supporting frame and a plurality of supporting rods, the supporting frame is connected to the energy-gathering shell, the plurality of supporting rods are all arranged on one side of the supporting frame, and the supporting component is used to insert the plurality of supporting rods into the circumferential soil layer of the explosive along the axial direction of the semi-buried explosive, so that the energy-gathering cutting component contacts the surface of the explosive.

6. The device for destroying underwater semi-buried explosives according to claim 5, characterized in that: The support frame is provided with a groove, and a clamping mechanism is provided in the groove. The clamping mechanism fixes the energy-focusing cutting component on the support frame by connecting with the groove.

7. The device for destroying underwater semi-buried explosives according to claim 6, characterized in that: The support frame is a rectangular frame having a pair of long sides and a pair of short sides. The groove is arranged on one of the long sides, and the length of the pair of short sides is not less than the length of the energy-concentrating cutting component.

8. The device for destroying underwater semi-buried explosives according to any one of claims 1 to 7, characterized in that: The cross-section of the metal charge liner is V-shaped or arc-shaped, and is extended along the axial direction of the semi-buried explosive. The first space is arranged on the convex side of the metal charge liner, and the second space is arranged on the concave side of the metal charge liner.

9. A method for destroying underwater semi-buried explosives according to any one of claims 1 to 4, characterized in that: The steps include: Step S1: Using a magnetic attraction component, along the axis direction of the underwater semi-buried explosive, when the permanent magnet rotates to a specified position, the energy-focusing cutting component is fixed on the surface of the exposed side of the explosive; Step S2: starting the timed detonation fuse component; Step S3: Wait for the timed detonation fuse component to be triggered and then ignite the main charge in the shaped charge cutting component, thereby forming a metal jet in combination with the metal charge cap to destroy the underwater semi-buried explosive.

10. A method for destroying a device for destroying underwater semi-buried explosives according to any one of claims 5 to 7, characterized in that: The steps include: Step A1: fix the energy-gathering cutting component on the support frame of the support component, and then insert the support rod into the circumferential soil layer of the explosive along the axial direction of the semi-buried underwater explosive, so that the energy-gathering cutting component contacts the surface of the exposed side of the explosive; Step A2: starting the timed detonation fuse component; Step A3: Wait for the timed detonation fuse component to be triggered and then ignite the main charge in the shaped charge cutting component, thereby forming a metal jet in combination with the metal charge cap to destroy the underwater semi-buried explosive.

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