Annular explosion propagation device for compact explosion forming bullet warhead

Abstract

The invention discloses an annular explosion propagation device for a compact explosion-formed bullet warhead, which is characterized in that the interior of an upper explosion propagation shell is concave upwards to form a circular inner cavity for assembling an explosion propagation grain, a lower explosion propagation shell is of a hollow columnar structure, and the upper explosion propagation shell is fixed at the upper end of the lower explosion propagation shell; the booster explosive ring is assembled in an inner cavity of the lower booster shell, and the explosion suppression body is assembled in an inner hole of the booster explosive ring; wherein the lower end face of the booster column is in contact with the upper end face of the booster ring; the booster explosive column is used for receiving detonation signals output by a fuze detonation point located in the center of the exterior of the upper booster shell, and the booster explosive ring is used for transmitting detonation waves of the booster explosive column to a main explosive column of a warhead to form annular detonation; a mounting hole is formed in the axis of the explosion-proof body and is used for mounting and fixing the bottom of the millimeter wave assembly; and a plurality of semicircular through holes which are uniformly distributed are processed from the top of the mounting hole to the outside of the annular explosion propagation device along the radial direction, and millimeter wave wires of the millimeter wave assembly can penetrate out of the semicircular through holes.

Description

Technical Field

[0001] The invention belongs to the technical field of ammunition warheads, and in particular relates to an annular explosion transmission device for a compact explosively formed projectile warhead. Background Art

[0002] The Explosively Formed Projectile (EFP) warhead mainly uses explosives to detonate to form a detonation wave, which crushes the liner to form a high-speed flying projectile, hits and penetrates the armored target. The traditional EFP warhead structure is mainly composed of the liner, main charge column, pressure screw, shell, and explosive transmission device.

[0003] The improvement of modern tank armor protection technology requires that the destructive capabilities of weapon systems such as terminal-sensitive projectiles and cruise missiles must be improved accordingly. As a destructive mechanism, in order to adapt to modern terminal-sensitive projectiles and cruise missiles, the EFP warhead must be compact and lightweight. The EFP warhead is a high-speed EFP projectile with a good aerodynamic shape formed by the explosive loading of the charge, which causes the charge liner to collapse, close or flip. The kinetic energy of the EFP is used to penetrate the armored target. The higher the speed of the EFP, the greater its kinetic energy and the greater its destructive power to the target. How to maximize the compactness and structural utilization of the EFP warhead design while meeting the high-power requirements of the EFP warhead is a challenging problem. Summary of the invention

[0004] The object of the present invention is to provide an annular explosive transmission device for a compact explosively formed projectile warhead, so as to enhance the damaging effect of the EFP warhead and improve the structural efficiency of the warhead.

[0005] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0006] A compact annular explosive transfer device for an explosively formed projectile warhead comprises an upper explosive transfer shell, an explosive charge column, an explosive charge ring, an explosive transfer lower shell and an explosion-proof body arranged coaxially, wherein:

[0007] The explosive upper shell is a round cover structure, the interior of the explosive upper shell is concave to form a circular inner cavity for assembling the explosive column, the explosive lower shell is a hollow columnar structure, the explosive upper shell is fixed to the upper end of the explosive lower shell; the explosive ring is assembled in the inner cavity of the explosive lower shell, and the explosion-proof body is assembled in the inner hole of the explosive ring; wherein, the lower end face of the explosive column contacts the upper end face of the explosive ring, the diameter of the explosive column is larger than the inner diameter of the explosive ring, but smaller than the outer diameter of the explosive ring; the explosive column is used to receive the detonation signal output by the fuze detonation point located at the outer center of the explosive upper shell, and the explosive ring is used to transmit the detonation wave of the explosive column to the main explosive column of the warhead to form an annular detonation;

[0008] A mounting hole is provided at the axis of the explosion-proof body for mounting and fixing the bottom of the millimeter wave component; a plurality of evenly distributed semicircular through holes are processed radially from the top of the mounting hole to the outside of the annular explosion-transmitting device, and the semicircular through holes pass through the explosion-proof body, the explosion-transmitting charge ring, the explosion-transmitting lower shell and the explosion-transmitting upper shell, and are used for the millimeter wave conductors of the millimeter wave component to pass through.

[0009] Furthermore, the explosive upper shell and the explosive lower shell are made of steel, the explosive column and the explosive ring are made of JH-14 explosive, and the explosion-proof body is made of bakelite or aluminum.

[0010] Furthermore, the explosive charge column adopts a round cake structure with a height of 5mm to 12mm; the explosive charge ring 3 has a height of 6mm to 15mm, and the end surface wall thickness of the explosive upper shell is 0.5mm to 1mm.

[0011] Furthermore, the diameter of the mounting hole is 8mm-12mm, and the diameter of the semicircular through hole is 6mm.

[0012] Furthermore, the millimeter wave radar is used to detect and identify targets.

[0013] A compact explosively formed projectile warhead comprises a charge liner, a main charge column, a millimeter wave assembly, a pressure screw, a shell, an annular detonator and a millimeter wave conductor, wherein:

[0014] The main charge is assembled in the shell, the charge liner is installed at the upper end of the main charge and fixed in the shell by a compression screw; an explosion hole is opened at the center of the bottom of the shell, and the annular explosion device is assembled to the explosion hole by means of an external thread or screw on the outer wall of the lower shell of the explosion device, the annular explosion device is coaxially arranged with the main charge, and the explosion ring faces the main charge; a detonating fuse is arranged at the outer center of the upper shell of the annular explosion device;

[0015] The main explosive column has an installation cavity for the millimeter wave assembly formed axially inside, the millimeter wave assembly is assembled into the installation cavity, and the upper end of the millimeter wave assembly passes through the charge liner; the lower end of the millimeter wave assembly is assembled into an installation hole arranged at the axis of the explosion-proof body of the annular explosion-transmitting device, and the millimeter wave conductor of the millimeter wave assembly is led out of the warhead from the semicircular through holes provided on the explosion-proof body of the annular explosion-transmitting device, the explosion-transmitting charge ring, the explosion-transmitting lower shell and the explosion-transmitting upper shell;

[0016] During the detonation process, the detonation signal generated by the detonating fuze penetrates the upper shell of the explosive transfer device and is transmitted to the explosive column. The detonation wave generated after the explosive column is ignited is transmitted to the explosive ring, forming an annular detonation of the main explosive column in the warhead.

[0017] A method for assembling a compact explosively formed projectile warhead, comprising:

[0018] First, apply shellac to the inner surface of the upper shell and lower shell of the explosive transmitter, as well as the outer surface of the explosive column, explosive ring and explosion-proof body. After standing for 5 to 15 minutes, glue the explosive column. Into the circular inner cavity of the upper shell of the transmission explosion, forming the upper assembly of the transmission explosion, the upper assembly of the transmission explosion is placed statically for more than 24 hours to ensure that the shellac paint is completely cured;

[0019] After the explosive ring is bonded and fixed to the lower shell of the explosive transmission to form the lower assembly of the explosive transmission, the explosion-proof body is installed into the inner hole of the explosive ring, and the explosion-proof body is placed still with the lower assembly of the explosive transmission for more than 24 hours to ensure that the shellac paint is completely cured;

[0020] After the main charge column and charge cap are installed into the shell by pressing screws, the bottom of the millimeter wave component is fixed to the mounting hole of the explosion-proof body and the millimeter wave wire is passed through the mounting hole in the middle of the explosion-proof body. The upper part of the millimeter wave component is assembled into the mounting cavity formed axially inside the main charge column and its upper end is passed through the charge cap. The lower explosion-transmitting component is then screwed into the explosion-transmitting hole of the shell by means of threaded fittings using tooling. The upper explosion-transmitting component is then placed outside the lower explosion-transmitting component. After the semicircular through holes at corresponding positions in the two components are aligned, the millimeter wave wire is led out of the semicircular through hole. The upper explosion-transmitting component and the lower explosion-transmitting component are fixedly connected using screws to complete the assembly.

[0021] Compared with the prior art, the present invention has the following technical features:

[0022] After the explosive transmission device is detonated, the device of the present invention is transformed from single-point detonation to annular detonation, achieving the purpose of expanding the detonation radius of the explosive transmission in a compact space, better exerting the power of the explosive, and increasing the speed and aspect ratio of the projectile, thereby increasing the destructive power of the EFP warhead. In addition, the annular explosive transmission device has a compact structure and is easy to install. The millimeter wave wire can be led out of the explosive transmission device without affecting detection. It can be well matched with the compact EFP warhead, effectively improving the structural efficiency of the warhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the annular explosion transmission device of the present invention;

[0024] Figure 2 A schematic diagram of the structure of a compact explosively formed projectile warhead proposed by the present invention;

[0025] Figure 3 (a), (b) and (c) are three-dimensional model diagrams of the front view, top view and bottom view of the annular explosive transmission device respectively;

[0026] Figure 4 (a), (b), (c), (d) and (e) are three-dimensional model diagrams of the explosive upper shell, explosive charge column, explosive lower shell, explosive charge ring and explosion-proof body respectively.

[0027] Explanation of the numbers in the figure: 1 explosive upper shell, 2 explosive charge column, 3 explosive lower shell, 4 explosive charge ring, 5 explosion-proof body, 6 mounting hole, 7 semicircular through hole. DETAILED DESCRIPTION

[0028] In order to solve the problems existing in the background technology, the present invention adopts an annular detonation layout structure on the one hand, and realizes the conversion from single-point detonation to annular detonation when the detonation device is detonated by the fuze or the safety device of the EFP warhead; on the other hand, the present invention embeds the millimeter wave component of the weapon equipment equipped with the EFP warhead into the main charge column of the EFP warhead, thereby improving the structural utilization rate of the warhead, realizing the compactness of the warhead, and thus reducing the volume and weight of the weapon equipment.

[0029] Studies have shown that the detonation method has a great influence on the formation of the EFP warhead. Several commonly used detonation methods include end face center point detonation, end face annular detonation and end face plane detonation, among which annular detonation has the best effect on the formation of EFP. The annular explosive transmission device of the present invention can expand the detonation radius to obtain a trumpet-shaped detonation wave. The trumpet-shaped detonation wave can increase the detonation pressure of the main charge, form a CJ detonation, and increase the speed of the EFP; at the same time, the annular detonation with an expanded detonation radius can adjust the pressure distribution of the charge liner, so that the detonation wave crushing speed at the top of the charge liner is higher than that at the edge of the charge liner, so that the EFP can be continuously lengthened, the aspect ratio of the EFP is improved, and the armor-piercing power of the EFP warhead will be significantly improved in the end.

[0030] Referring to the accompanying drawings, the present invention provides a compact annular explosive transfer device for an explosively formed projectile warhead, comprising a coaxially arranged explosive transfer upper shell 1, explosive charge column 2, explosive charge ring 4, explosive transfer lower shell 3 and explosion-proof body 5, wherein:

[0031] The inner cavity diameter of the explosive column 2 matches that of the explosive upper shell 1, and the diameter of the explosive ring 4 matches that of the explosive lower shell 5. The explosive upper shell 1 is a round cover structure, and the interior of the explosive upper shell 1 is concave to form a circular inner cavity for assembling the explosive column 2. The explosive lower shell 3 is a hollow columnar structure, and the explosive upper shell 1 is fixed to the upper end of the explosive lower shell 3 by screws; the explosive ring 4 is assembled in the inner cavity of the explosive lower shell 3, and the explosion-proof body 5 is assembled in the inner hole of the explosive ring 4; wherein, the lower end face of the explosive column 2 contacts the upper end face of the explosive ring 4, and the diameter of the explosive column 2 is larger than the inner diameter of the explosive ring 3, but smaller than the outer diameter of the explosive ring 3;

[0032] A mounting hole 6 is provided at the axis center of the explosion-proof body 5 for mounting and fixing the bottom of the millimeter wave component; semicircular through holes 7 are evenly distributed radially from the top of the mounting hole 6 to the outside of the explosion-transmitting device, and the semicircular through holes 7 pass through the explosion-proof body 5, the explosion-transmitting charge ring 4, the explosion-transmitting lower shell 3 and the explosion-transmitting upper shell 1, and are used for the millimeter wave conductors of the millimeter wave component to pass through.

[0033] In this scheme, the booster column 2 generally adopts a round cake-shaped structure, which is used to receive the detonation signal output by the fuze detonation point located at the center of the outer side of the booster upper shell, and the height is generally 5mm to 12mm; the booster ring 3 is generally 6mm to 15mm high, which is used to transmit the detonation wave of the booster column 2 to the main charge column of the warhead to form an annular detonation; the specific amount of explosives should be determined according to the minimum amount of explosives for detonating the EFP warhead. The end wall thickness of the booster upper shell 1 is generally 0.5mm to 1mm; the explosives used in the booster column 2 and the booster ring 3 are generally selected from high-sensitivity boosters, such as polyblack-14 explosives. The explosive transmission upper shell 1 and the explosive transmission lower shell 4 are generally made of steel, and the explosion-proof body 5 is generally made of bakelite or aluminum. The explosion-proof body 5 has a mounting hole with a diameter of 8mm-12mm along the axial direction, which is convenient for the insertion of the millimeter wave bottom, making the axial direction of the entire warhead more compact; the semicircular through holes 7 with a diameter of 6mm are radially distributed at corresponding positions on the explosive transmission upper shell 1, the explosive transmission lower shell 3, the explosive ring 4, and the explosion-proof body 5, which are used for the millimeter wave conductors to pass through.

[0034] Among them, the millimeter-wave radar, EFP warhead, etc. described in this scheme are all basic components of weapons and equipment. The millimeter-wave radar is used to detect and identify targets. Since its separate arrangement requires a large space and is not conducive to a compact structure, this scheme integrates it into the warhead and passes the millimeter-wave wire through the annular explosive transmission device.

[0035] See also Figure 2 A compact explosively formed projectile warhead comprises a liner, a main charge column, a millimeter wave assembly, a pressure screw, a shell, an annular detonator and a millimeter wave conductor, wherein:

[0036] The main charge is assembled in the shell, the charge cap is installed at the upper end of the main charge and fixed in the shell by a compression screw; an explosion hole is opened at the center of the bottom of the shell, and the annular explosion device is assembled to the explosion hole by means of an external thread or screw on the outer wall of the lower explosion shell, the annular explosion device is coaxially arranged with the main charge, and the explosion ring 4 faces the main charge; a detonating fuse is arranged at the outer center of the upper explosion shell 1 of the annular explosion device;

[0037] The interior of the main explosive column is formed with a mounting cavity for the millimeter wave component along the axial direction, the millimeter wave component is assembled into the mounting cavity, and the upper end of the millimeter wave component passes through the charge liner; the lower end of the millimeter wave component is assembled in the mounting hole 6 set at the axis of the annular explosion-transmitting device explosion-proof body 5, and the millimeter wave conductor of the millimeter wave component is led out of the warhead from the semicircular through hole 7 provided on the annular explosion-transmitting device explosion-proof body 5, the explosion-transmitting charge ring 4, the explosion-transmitting lower shell 3 and the explosion-transmitting upper shell 1;

[0038] During the detonation process, the detonation signal generated by the detonating fuse penetrates the explosive upper shell 1 and is transmitted to the explosive column 2. The detonation wave generated by the ignition of the explosive column 2 is transmitted to the explosive ring 3, forming an annular detonation of the main explosive column in the warhead.

[0039] Another aspect of the present invention provides a method for assembling a compact explosively formed projectile warhead, comprising:

[0040] First, apply shellac to the inner surface of the upper shell 1 and the lower shell 3, as well as the outer surface of the explosive column 2, the explosive ring 4 and the explosion-proof body 5. After standing for 5 to 15 minutes, glue the explosive column 2 Into the circular inner cavity of the upper shell 1 of the transmission explosion, forming the upper assembly of the transmission explosion, the upper assembly of the transmission explosion is placed statically for more than 24 hours to ensure that the shellac paint is completely cured;

[0041] After the explosive charge ring 4 is bonded and fixed to the explosive lower shell 3 to form the explosive lower assembly, the explosion-proof body 5 is installed into the inner hole of the explosive charge ring 4. The explosion-proof body 5 is placed statically with the explosive lower assembly for more than 24 hours to ensure that the shellac paint is completely cured;

[0042] After the main charge column and the charge cap are installed into the shell by pressing screws, the bottom of the millimeter wave component is fixed to the mounting hole 6 of the explosion-proof body 5 and the millimeter wave wire is passed through the mounting hole 6 in the middle of the explosion-proof body 5. The upper part of the millimeter wave component is assembled into the mounting cavity formed axially inside the main charge column and its upper end is passed through the charge cap. The lower explosion-transmitting component is then screwed into the explosion-transmitting hole of the shell by means of threaded fittings. The upper explosion-transmitting component is then placed outside the lower explosion-transmitting component. After the semicircular through holes 7 at corresponding positions in the two components are aligned, the millimeter wave wire is led out from the semicircular through hole. The upper explosion-transmitting component and the lower explosion-transmitting component are fixedly connected by 8 M3 screws to complete the assembly.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An annular explosive transmission device for a compact explosively formed projectile warhead, characterized in that: The invention comprises a coaxially arranged explosive upper shell (1), an explosive charge column (2), an explosive charge ring (4), an explosive lower shell (3) and an explosion-proof body (5), wherein: The explosive upper shell (1) is a round cover structure. The interior of the explosive upper shell (1) is concave to form a circular inner cavity for assembling an explosive column (2). The explosive lower shell (3) is a hollow columnar structure. The explosive upper shell (1) is fixed to the upper end of the explosive lower shell (3). The explosive ring (4) is assembled in the inner cavity of the explosive lower shell (3), and the explosion-proof body (5) is assembled in the inner hole of the explosive ring (4). The lower end surface of the explosive column (2) contacts the upper end surface of the explosive ring (4). The diameter of the explosive column (2) is larger than the inner diameter of the explosive ring (3), but smaller than the outer diameter of the explosive ring (3). The explosive column (2) is used to receive the detonation signal output by the fuze detonation point located at the outer center of the explosive upper shell (1). The explosive ring (3) is used to transmit the detonation wave of the explosive column (2) to the main explosive column of the warhead to form an annular detonation. A mounting hole (6) is provided at the axis of the explosion-proof body (5) for mounting and fixing the bottom of the millimeter wave component; a plurality of semicircular through holes (7) are evenly distributed and processed radially from the top of the mounting hole (6) to the outside of the annular explosion-transmitting device; the semicircular through holes (7) pass through the explosion-proof body (5), the explosion-transmitting charge ring (4), the explosion-transmitting lower shell (3) and the explosion-transmitting upper shell (1) and are used for the millimeter wave conductors of the millimeter wave component to pass through.

2. The annular explosive transmission device for compact explosively formed projectile warhead according to claim 1 is characterized in that: The explosive upper shell (1) and the explosive lower shell (4) are made of steel, the explosive column (2) and the explosive ring (3) are made of JH-14 explosive, and the explosion-proof body (5) is made of bakelite or aluminum.

3. The annular explosive transmission device for compact explosively formed projectile warhead according to claim 1 is characterized in that: The explosive charge column (2) adopts a round cake-shaped structure with a height of 5 mm to 12 mm; the explosive charge ring 3 has a height of 6 mm to 15 mm, and the end surface wall thickness of the explosive upper shell (1) is 0.5 mm to 1 mm.

4. The annular explosive transmission device for compact explosively formed projectile warhead according to claim 1, characterized in that: The diameter of the mounting hole (6) is 8 mm to 12 mm, and the diameter of the semicircular through hole (7) is 6 mm.

5. The annular explosive transmission device for compact explosively formed projectile warhead according to claim 1, characterized in that: The millimeter wave radar is used for detecting and identifying targets.

6. A compact explosively formed projectile warhead, characterized in that: It includes a charge liner, a main charge column, a millimeter wave assembly, a pressure screw, a shell, an annular detonator and a millimeter wave conductor, wherein: The main explosive column is assembled in the shell, and the charge cap is installed at the upper end of the main explosive column and fixed in the shell by a compression screw; an explosion hole is opened at the center of the bottom of the shell, and the annular explosion device according to any one of claims 1 to 5 is assembled to the explosion hole by means of an external thread or screw on the outer wall of the explosion lower shell, the annular explosion device is coaxially arranged with the main explosive column, and the explosion ring (4) faces the main explosive column; a detonating fuse is arranged at the outer center of the explosion upper shell (1) of the annular explosion device; The main explosive column has an installation cavity for the millimeter wave component formed axially inside, the millimeter wave component is assembled into the installation cavity, and the upper end of the millimeter wave component passes through the charge liner; the lower end of the millimeter wave component is assembled in an installation hole (6) arranged at the axis of the annular explosion-transmitting device explosion-proof body (5), and the millimeter wave conductor of the millimeter wave component is led out of the warhead from a semicircular through hole (7) provided on the annular explosion-transmitting device explosion-proof body (5), the explosion-transmitting charge ring (4), the explosion-transmitting lower shell (3) and the explosion-transmitting upper shell (1); During the detonation process, the detonation signal generated by the detonating fuse penetrates the explosive upper shell (1) and is transmitted to the explosive column (2). The detonation wave generated after the explosive column (2) is ignited is transmitted to the explosive ring (3), forming an annular detonation of the main explosive column in the warhead.

7. A method for assembling a compact explosively formed projectile warhead, characterized in that: include: First, shellac is applied to the inner surfaces of the upper shell (1) and the lower shell (3) of the explosive transmission device, as well as the outer surfaces of the explosive column (2), the explosive ring (4) and the explosion-proof body (5). After being left to stand for 5 to 15 minutes, the explosive column (2) is bonded to the explosive transmission device. into the circular inner cavity of the upper shell (1) of the transmission explosion to form an upper assembly of the transmission explosion, and the upper assembly of the transmission explosion is left to stand for more than 24 hours to ensure that the shellac paint is completely cured; The explosive charge ring (4) is bonded and fixed to the explosive charge lower shell (3) to form the explosive charge lower assembly, and then the explosion-proof body (5) is installed into the inner hole of the explosive charge ring (4). The explosion-proof body (5) is placed together with the explosive charge lower assembly for more than 24 hours to ensure that the shellac paint is completely cured; After the main explosive column and the charge cap are installed into the shell by means of screw pressing, the bottom of the millimeter wave assembly is fixed to the mounting hole (6) of the explosion-proof body (5) and the millimeter wave wire is passed through the mounting hole (6) in the middle of the explosion-proof body (5). The upper part of the millimeter wave assembly is assembled into the mounting cavity formed along the axial direction inside the main explosive column and the upper end of the millimeter wave assembly is passed through the charge cap. Then, the lower explosive transmission assembly is screwed into the explosion transmission hole of the shell by means of threaded fitting using a tool. Then, the upper explosive transmission assembly is placed outside the lower explosive transmission assembly. After the semicircular through holes (7) at corresponding positions in the two assemblies are aligned, the millimeter wave wire is led out from the semicircular through hole. The upper explosive transmission assembly and the lower explosive transmission assembly are fixedly connected using screws to complete the assembly.

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