Annular energy gathering and central super energy gathering composite charging structure

Abstract

The invention discloses an annular shaped charge and central super shaped charge composite charging structure which comprises an upper end shell, a lower end shell, charges, an auxiliary shaped charge cover, an inner shell, an annular shaped charge cover and a supporting body, and detonation waves formed after the charges are detonated are utilized to enable the inner shell and the auxiliary shaped charge cover to be extruded to form central super shaped charge jet flow which is higher in jet flow speed and large in effective mass; and then, the annular shaped charge cover is driven by detonation waves to form a high-temperature and high-speed annular energy-gathered penetration body. According to the method, initial damage of the target is caused by preferential center super energy-gathered penetration, the surface structure of the target is damaged, internal pore channels and cracks are formed, then the cracks of the target are diffused through the annular energy-gathered penetration body, and the effect of enhancing crushing damage of the targets such as concrete and ceramic composite armors is achieved; and the damage effect is better than that of single energy-gathered penetration damage.

Description

Technical Field

[0001] The present invention belongs to the field of high-efficiency damage technology, and specifically relates to a composite charge structure of an annular focused charge and a central super-focused charge. Background Art

[0002] When a central super-focused jet in the prior art acts on a brittle target, although deep penetration holes are formed on the target surface through the high-speed metal jet, the damage effect on layered / composite structures such as ceramic composite armor is limited. The jet energy is concentrated in a single channel, and a large amount of charge is required to induce large-scale interlayer delamination or overall structural collapse. In addition, the high hardness and toughness of the ceramic layer may cause jet deflection or energy dissipation. When a single annular penetrator in the prior art acts on a brittle target, although it can induce large-scale fragmentation of the target surface through annular penetration, the penetration depth is insufficient, and the damage effect on the core area of thick concrete piers or multi-layer ceramic armor is relatively weak. The annular impact energy is easily absorbed by the target surface, making it difficult to cause effective internal damage. Summary of the Invention

[0003] The present invention proposes a composite charge structure of annular focused energy and central super focused energy.

[0004] The technical solution for achieving the purpose of the present invention is: a composite charge structure of an annular focused energy and central super focused energy, comprising: an upper outer shell, a lower outer shell, a charge, an auxiliary charge cover, an inner shell, an annular charge cover and a support body; the upper outer shell and the lower outer shell are fixedly connected to form a first sealed cavity, a support body is provided at the bottom center of the lower outer shell, the height of the support body is consistent with the height of the lower outer shell, the inner shell is fixedly connected to the support body, the auxiliary charge cover is arranged at the end of the inner shell away from the support body, the auxiliary charge cover, the inner shell and the support body form a second sealed cavity on the lower outer shell; the annular charge cover is arranged at the top of the support body and the lower outer shell, and the annular charge cover, the outer side of the support body and the lower outer shell form a third sealed cavity; the charge is arranged in the space outside the second sealed cavity and the third sealed cavity in the first sealed cavity.

[0005] Compared with the prior art, the present invention has the following advantages:

[0006] The overall structure of the present invention can not only break through the high-strength protection of the surface layer, but also achieve directional crushing of the internal structure, and is particularly suitable for brittle targets;

[0007] The present invention adopts complementary physical damage mechanisms (jet penetration + circumferential shear) to achieve "point-surface-volume" multi-level destruction, and the damage efficiency is doubled;

[0008] The present invention improves energy utilization, reduces the charge amount, and optimizes economic efficiency.

[0009] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the composite charge structure of annular focused charge and central super focused charge.

[0011] Figure 2 Schematic diagram of the upper shell.

[0012] Figure 3 Schematic diagram of the lower end shell.

[0013] Figure 4 Schematic diagram of the inner shell.

[0014] Figure 5 Schematic diagram of the auxiliary charge liner.

[0015] Figure 6 Schematic diagram of annular charge liner.

[0016] Figure 7 Schematic diagram of the support body.

[0017] Figure 8 This is a structural diagram of Example 1.

[0018] Figure 9 This is a structural diagram of Example 2.

[0019] Figure 10 Schematic diagram of damage effect. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings.

[0021] Combine Figure 1 and Figure 7 The present invention provides a composite charge structure of annular focused energy and central super focused energy, comprising: an upper outer shell (1), a lower outer shell (2), a charge (3), an auxiliary charge liner (4), an inner shell (5) and an annular charge liner (6). The upper outer shell (1) and the lower outer shell (2) are fixedly connected to form a first sealed cavity, a support body (7) is provided at the bottom center of the lower outer shell (2), and the height of the support body (7) is consistent with the height of the lower outer shell (2), the inner shell (5) and the support body (7) are fixedly connected, the auxiliary charge liner (4) is arranged at one end of the inner shell (5) away from the support body (7), and the auxiliary charge liner (4), the inner shell (5) and the support body (7) form a second sealed cavity on the lower outer shell (2); the cavity formed by the outer side of the annular charge liner (6), the support body (7) and the lower outer shell (2) serves as a third sealed cavity; the charge (3) is arranged in the space outside the second sealed cavity and the third sealed cavity in the first sealed cavity.

[0022] The present invention utilizes the annular detonation charge to detonate and act on the auxiliary charge liner, so that the inner shell forms a jet with high velocity and large effective mass; then, the annular charge liner is driven by the explosion shock wave to form a high-temperature, high-speed annular shaped charge penetrator. The damage effect of the present invention is as follows: Figure 10 As shown, from Figure 10 It can be seen from the figure that the central super-focused jet is continuous and stable, forming an effective jet penetration on the target plate; the annular shaped charge penetrator forms an effective annular expansion hole on the target plate.

[0023] Combine Figure 2 The upper shell (1) of the annular focused energy and central super focused energy composite charge structure of the present invention is in the shape of a hollow cylinder, and a hole can be left at the top to place the detonator. The detonation method is annular detonation or central detonation. The upper shell (1) needs to withstand a large overload, and high-strength aluminum alloy, titanium alloy, magnesium alloy, alloy steel, etc. can be selected according to the overload size.

[0024] Combine Figure 3 The lower end shell (2) is in the shape of a hollow cylinder, with a groove in the center for fixing and connecting the support body (7); the height setting of the lower end shell (2) can ensure the effective blasting height of the annular focused jet; the top end of the lower end shell (2) is provided with a thread for fixing and docking with the upper end shell (1).

[0025] The charge (3) may be 8701 explosive, HMX or TNT.

[0026] Combine Figure 4 The inner shell (5) is in the shape of a hollow cylinder, the upper end of which is fixedly connected to the auxiliary charge cap (4), and the lower end of which is fixedly connected to the support body (7). The material can be selected from homogeneous metal materials such as copper, iron, tungsten alloy, aluminum alloy or tantalum alloy.

[0027] Combine Figure 5 The diameter of the auxiliary charge liner (4) should be larger than the diameter of the cylindrical inner shell (5), and an annular groove should be left to fix the inner shell (5). The material can be iron, tantalum, tungsten, etc.

[0028] Combine Figure 6 The annular liner (6) can be a ring-shaped cone, a ring-shaped notch, or other annular structures when annular detonation is used; when central detonation is used, a corresponding M-shaped liner or other annular structures can be used. The annular liner can be made of copper, iron, tungsten alloy, aluminum alloy, or tantalum alloy.

[0029] This invention uses preferential central super-focused charge penetration to cause initial damage to the target, disrupting the target's surface structure and forming internal channels and cracks. The annular shaped charge penetrator then propagates the target cracks, achieving enhanced damage to targets such as concrete and ceramic composite armor. Its damage effectiveness surpasses that of a single shaped charge penetration. Due to the complementary physical damage mechanisms (jet penetration + annular shear), this invention achieves multi-level "point-surface-volume" destruction, doubling its damage effectiveness. Compared to traditional multiple warheads in series or high-yield single-stage charge schemes, it improves energy utilization, reduces charge volume, and optimizes economic efficiency.

[0030] Due to the complementary physical damage mechanisms (jet penetration + circumferential shear), the present invention achieves "point-surface-volume" multi-level destruction, thereby doubling its damage efficiency; compared with traditional multiple warheads in series or large-equivalent single-stage charging schemes, energy utilization is improved, charging amount is reduced, and economy is optimized.

[0031] Example 1

[0032] like Figure 8 As shown, the upper shell (1) is made of alloy steel, with an inner diameter of 150 mm and a wall thickness of 2 mm. The detonation method is annular detonation, and the detonation point is point O. The lower shell (2) is made of 2A12 aluminum alloy, with a cylindrical shell inner diameter of 141.2 mm and a thickness of 6.4 mm. The charge (3) uses 8701 explosive with a charge density of 1.8 g / cm 3 The auxiliary charge liner (4) is made of alloy steel, with a diameter of 47.2 mm and a thickness of 2 mm; the inner shell (5) is made of copper, with an outer diameter of 39.2 mm and a thickness of 1.5 mm; the annular charge liner (6) is made of copper, with an inner diameter of 39.2 mm, an outer diameter of 147.2 mm, a cone angle of 90°, and a thickness of 2.1 mm; the support body (7) is made of alloy steel, with an inner diameter of the cylindrical shell of 39.2 mm and a thickness of 4.5 mm.

[0033] Example 2

[0034] like Figure 9 As shown, the upper shell (1) is made of alloy steel, with an inner diameter of 150 mm and a wall thickness of 2 mm. The detonation method is central detonation, and the detonation point is point A. The lower shell (2) is made of 2A12 aluminum alloy, with an outer ring inner diameter of 141.2 mm and a thickness of 6.4 mm. The charge (3) is 8701 explosive with a charge density of 1.8 g / cm 3The auxiliary charge liner (4) is made of alloy steel, with a diameter of 27.04 mm and a thickness of 2 mm. The inner shell (5) is made of copper, with an inner diameter of 20.8 mm at the upper end and 36.2 mm at the lower end, and a thickness of 1.5 mm. The annular charge liner (6) is made of copper, with an inner diameter of 39.2 mm, an outer diameter of 147.2 mm, a cone angle of 77.8°, and a thickness of 2.8 mm. The support body (7) is made of alloy steel, with an inner diameter of 39.2 mm and a thickness of 4.5 mm.

[0035] It should be clear to those skilled in the art that the above embodiments are only for the purpose of illustrating the present invention clearly, and are not intended to limit the scope of the present invention. Other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A composite charge structure of annular concentrated charge and central super concentrated charge, characterized in that: The invention comprises: an upper shell (1), a lower shell (2), a charge (3), an auxiliary charge liner (4), an inner shell (5), an annular charge liner (6) and a support body (7); the upper shell (1) and the lower shell (2) are fixedly connected to form a first sealed cavity; a support body (7) is provided at the bottom center of the lower shell (2); the height of the support body (7) is consistent with the height of the lower shell (2); the inner shell (5) and the support body (7) are fixedly connected; the auxiliary charge liner (4) is arranged at one end of the inner shell (5) away from the support body (7); the auxiliary charge liner (4), the inner shell (5) and the support body (7) form a second sealed cavity on the lower shell (2); the annular charge liner (6) is arranged at the top of the support body (7) and the lower shell (2); the outer side of the annular charge liner (6), the support body (7) and the lower shell (2) form a third sealed cavity; the charge (3) is arranged in the space outside the second sealed cavity and the third sealed cavity in the first sealed cavity.

2. The annular focused energy and central super focused energy composite charge structure according to claim 1 is characterized in that: The upper end shell (1) is a hollow cylindrical shell with a hole left on the top for placing the detonator.

3. The annular concentrated energy and central super concentrated energy composite charge structure according to claim 1 is characterized in that: The detonation method is ring detonation or center detonation.

4. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: The material of the upper end shell (1) is any one of aluminum alloy, titanium alloy, magnesium alloy and alloy steel.

5. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: The lower end shell (2) is a hollow cylinder, with a groove at the center of the bottom for fixed connection with the support body (7); the top end of the lower end shell (2) is provided with a thread for fixed docking with the upper end shell (1).

6. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: The charge (3) is selected from any one of 8701 explosive, HMX, and TNT.

7. The annular concentrated charge and central super concentrated charge composite charge structure according to claim 1 is characterized in that: The diameter of the auxiliary medicine-shaped cover (4) is larger than the diameter of the cylindrical inner shell (5), and an annular groove is left to fix the inner shell (5).

8. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: The auxiliary charge liner (4) is made of any one of brass, oxygen-free copper, iron, tantalum alloy and tungsten alloy.

9. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: The inner shell (5) is in the shape of a hollow cylinder or a hollow truncated cone cylindrical shell, and is made of any one of copper, iron, tungsten alloy, aluminum alloy or tantalum alloy homogeneous metal materials.

10. The annular focused charge and central super focused charge composite charge structure according to claim 1 is characterized in that: When annular detonation is adopted, the annular charge liner (6) adopts a ring-cone and a round ball-notch structure; when central detonation is adopted, an M-shaped charge liner is adopted, and the material of the annular charge liner (6) is any one of copper, iron, tungsten alloy, aluminum alloy, and tantalum alloy.

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