阅读说明：本技术 一种可形成嵌接式金属、活性双侵彻体的聚能装药结构 (Energy-gathering charge structure capable of forming scarf joint type metal and active double penetration bodies ) 是由 王海福 郑元枫 葛超 余庆波 汪德武 赵宏伟 王仕鹏 卢冠成 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种可形成嵌接式金属、活性双侵彻体的聚能装药结构。本发明包括起爆机构,壳体,主药柱,复合药型罩和压螺；其中,复合药型罩配合安装在主药柱一端设置的双锥凹槽内,包括金属药型罩和活性药型罩；其中,金属药型罩为圆锥体,活性药型罩为圆台；活性药型罩的内锥角大于金属药型罩；活性药型罩的上底面与金属药型罩的底面重合,下底面与主药柱的端面平齐。本发明聚能装药结构能够产生前驱高密度金属射流和尾随可爆活性杆体,并兼顾金属侵彻体和活性侵彻体两者优势,前驱高密度金属射流利用动能实现对装甲目标的大侵深侵彻,可爆活性杆体随入目标内部并发生爆炸,可大幅提高聚能装药破甲后效。(The invention discloses an energy-gathering charge structure capable of forming an embedded metal and active double penetration body. The invention comprises a detonating mechanism, a shell, a main explosive column, a composite explosive type cover and a pressing screw; the composite shaped charge liner is arranged in a double-cone groove arranged at one end of the main charge column in a matching way and comprises a metal shaped charge liner and an active shaped charge liner; wherein the metal shaped charge liner is a cone, and the active shaped charge liner is a round table; the inner taper angle of the active shaped charge liner is larger than that of the metal shaped charge liner; the upper bottom surface of the active shaped charge cover coincides with the bottom surface of the metal shaped charge cover, and the lower bottom surface is flush with the end surface of the main charge column. The energy-gathering charge structure can generate a precursor high-density metal jet and a trailing explosive active rod body, and takes advantages of a metal penetration body and an active penetration body into consideration, the precursor high-density metal jet realizes large penetration of an armored target by utilizing kinetic energy, the explosive active rod body enters the target along with the inside and explodes, and the energy-gathering charge nail-breaking aftereffect can be greatly improved.)

1. The energy-gathering charge structure capable of forming the embedded metal and active double penetration body is characterized by comprising an initiation mechanism (1), a shell (2), a main explosive column (3) and a composite shaped charge cover; wherein the composite shaped charge liner comprises a metal shaped charge liner (4) and an active shaped charge liner (5);

wherein, the main explosive column (3) is a cylinder, one end is a plane, and the other end is provided with a groove matched with the composite shaped charge liner; the metal shaped charge liner (4) is a hollow cone with an opening at the bottom end, and the active shaped charge liner (5) is a hollow round table with openings at two ends; the taper angle of the active shaped charge cover (5) is larger than that of the metal shaped charge cover (4), the upper bottom surface of the active shaped charge cover (5) is superposed with the bottom surface of the metal shaped charge cover (4), and the lower bottom surface of the active shaped charge cover (5) is flush with the end surface of the main charge column (3);

the initiation mechanism (1) is positioned at the plane end of the main explosive column (3); the shell (2) is wrapped on the outer surfaces of the detonating mechanism (1) and the main explosive column (3).

2. A shaped charge configuration according to claim 1, wherein the active charge liner (5) is compressed against the main charge (3) by a compression screw (6).

3. A shaped charge configuration according to claim 1 or 2, wherein the initiation means (1), the housing (2), the main charge (3), the metal liner (4) and the active liner (5) are all coaxial.

4. The shaped charge configuration as claimed in claim 1, wherein the main charge (3) is produced by compression molding using a high explosive; the length-diameter ratio of the main explosive column (3) is 0.8-1.5, and single-point center detonation is carried out through the detonation mechanism (1).

5. Shaped charge construction according to claim 1, characterised in that the casing (2) is made of a low-density metallic material or a polymeric non-metallic material.

6. Shaped charge construction according to claim 1, characterised in that the active liner (5) is made from an energetic powder by cold press forming, sintering and machining.

7. The shaped charge structure of claim 6, wherein the energetic powder is formed by filling a certain amount of energetic metal powder with high molecular polymer powder as a matrix.

8. The shaped charge configuration of claim 7, wherein the energy-containing powder comprises a PTFE/Ti, PTFE/Al/W, or PTFE/Cu mixed powder material.

9. A shaped charge configuration according to claim 1, wherein the active liner (5) has an internal taper angle equal to its external taper angle, or less than the external taper angle by 1 ° to 5 °.

10. Shaped charge construction according to claim 1, characterised in that the metal liner (4) is made of a high-density inert metal material.

11. Shaped charge construction according to claim 10, characterised in that the metal liner (4) is made of copper, tungsten, iron or tungsten-copper alloy.

12. A shaped charge configuration according to claim 1, wherein the internal taper angle of the metal liner (4) is equal to the external taper angle thereof, or is 1 ° to 3 ° less than the external taper angle.

13. The shaped charge configuration according to claim 1, wherein the configuration parameters of the active liner (5) and the metal liner (4) satisfy the following formula:

wherein, subscripts x and y represent an active liner and a metal liner respectively; beta represents the pressing angle, v₀Represents the stitching speed, alpha represents the liner inside half cone angle, and delta represents the deformation angle.

14. The shaped charge structure according to claim 1, wherein the outer surfaces of the metal liner (4) and the active liner (5) are attached in the groove of the main charge column (3) through shellac paint.

Technical Field

The invention relates to the technical field of shaped charge, in particular to a shaped charge structure capable of forming a scarf joint type metal and active double penetration body.

Background

In the future ground wars, the armored forces still have very important functions, and whether the armored forces can be effectively attacked is still the key to obtain the initiative of the wars. More importantly, the primary goal of effectively striking armor is not just to break through armor protection, but rather to effectively cause subsequent damage to equipment and personnel within the armor. The energy-gathered charging warhead mainly adopted by the prior anti-armor weapon generally uses a high-density inert metal shaped charge cover, the inert metal shaped charge cover forms high-speed jet under the action of explosive detonation waves, and the penetration depth of a target can reach 8-10 times of the charging caliber. However, the inert metal jet flow has a single kinetic energy damage mechanism, the formed penetration aperture is small, and the subsequent damage effect is difficult to exert after penetrating the armor like the end of a strong crossbow. That is, the modern war requires that the anti-armor ammunition energy-gathering warhead not only can penetrate an armored target, but also can effectively strike armored personnel, electronic devices, equipment and the like, which is difficult to realize by the inert metal shaped charge cover energy-gathering warhead.

Meanwhile, the active shaped charge liner technology has been widely concerned and studied by experts at home and abroad for over a decade. The active liner technology is used for armor-breaking energy-gathered ammunition, the weight of a warhead can be reduced, the design structure is simplified, active jet flow formed by the active liner technology can enter a target to explode after penetrating through the armor by utilizing kinetic energy, and a large amount of chemical energy and gas products are released, so that the damage effect on the target in the armor is greatly improved. However, the active liner technology also faces a bottleneck problem, the active liner is prepared from energetic composite materials, and the density, strength and ductility of the active liner are not ideal enough, so that corresponding active jet can generate strong explosion aftereffect, but the penetration capability is seriously insufficient. Specifically, the active liner shaped charge is only suitable for hitting light armored vehicles at small attack angles, and when the attack angle is large or the armor is thick, the active liner shaped charge cannot penetrate through the armor, so that the application of the active liner on an energy gathering warhead is greatly restricted.

Even if the traditional series energy-gathering warhead is used, ideal after-effect damage is difficult to realize after the armor, because the penetration aperture of the front stage warhead of the traditional series energy-gathering warhead is very small, the rear stage warhead is difficult to follow the inside of the armor, and the after-effect damage effect cannot be exerted during anti-armor.

Disclosure of Invention

In view of the above, the invention provides an energy-gathering charge structure capable of forming a scarf joint type metal and active double penetration body, the structure can generate a precursor high-density metal jet and a trailing explosive active rod body, and has the advantages of both the metal penetration body and the active penetration body, the precursor high-density metal jet utilizes kinetic energy to realize large penetration to an armor target, the explosive active rod body penetrates into the target along with the inside of the target and explodes, and the energy-gathering charge after-penetration effect can be greatly improved.

The invention relates to an energy-gathering charge structure capable of forming a scarf joint type metal and active double penetration body, which comprises a detonation mechanism, a shell, a main explosive column, a composite explosive cover and a pressing screw; wherein the composite shaped charge liner comprises a metal shaped charge liner and an active shaped charge liner;

the main explosive column is integrally cylindrical, one end of the main explosive column is provided with a biconical groove matched with the composite shaped charge liner, and the other end of the main explosive column is a plane; the metal shaped charge liner is of a hollow cone structure, the bottom end of the metal shaped charge liner is provided with an opening, and the side surface of the metal shaped charge liner is tightly attached to the small conical pyramid-shaped groove in the main charge column; the active shaped charge liner is in a round table (i.e. a truncated cone) structure, and two ends of the active shaped charge liner are open; the upper bottom surface of the active shaped charge liner is superposed with the bottom surface of the metal shaped charge liner, the lower bottom surface of the active shaped charge liner is flush with the end surface of the main charge column, and the taper angle of the active shaped charge liner is larger than that of the metal shaped charge liner; the side surface of the active shaped charge liner is tightly attached to the big taper pyramid groove in the main charge column;

the shell is in a stepped circular tube shape, two ends of the shell are opened, the main explosive column is coaxially filled in the large end of the shell, the plane end of the main explosive column is tightly attached to the bottom surface in the shell, and the other end of the main explosive column is tightly pressed by a pressing screw through an active explosive type cover; the small end of the shell is internally provided with an initiation mechanism for initiating the main explosive column.

Further, the initiation mechanism, the shell, the main charge, the metal shaped charge liner, the active shaped charge liner and the pressing screw are coaxial.

Furthermore, the main explosive column is made of high-energy explosive and is pressed into the structure through a mold, the length-diameter ratio of the main explosive column is about 0.8-1.5, and single-point center detonation is carried out through a detonation mechanism.

Further, the shell is made of low-density metal materials or high-molecular non-metal materials, such as an aluminum shell, a nylon shell and the like. The shell is used for fixing and protecting the initiation mechanism, the explosive and the shaped charge liner on one hand, and is used for improving the explosive energy utilization rate on the other hand.

Furthermore, the conical active shaped charge liner with openings at two ends is prepared by cold press molding, high-temperature sintering and machining of energetic powder. The energetic powder is prepared by using high molecular polymer (such as PTFE) powder as a matrix, and filling a certain amount of energetic metal powder (such as metal, alloy, intermetallic compound and the like) into the matrix to form an active energetic mixture, wherein commonly used powder materials are mixed powder materials of PTFE/Ti, PTFE/Al/W, PTFE/Cu and the like. The internal taper angle of the active liner is generally equal to the external taper angle, and can be properly smaller than the external taper angle by 1-5 degrees.

Furthermore, the metal shaped charge liner is made of high-density inert metal material, and the density of the material is generally not lower than 7.8g/cm³Typical materials are copper, tungsten, iron, tungsten copper alloys, etc. The internal taper angle of the metal liner is generally equal to the external taper angle thereof, and can be properly smaller than the external taper angle by 1-3 degrees.

Further, the pressing screw is of a circular ring structure, generally adopts No. 45 steel and is used for fixing the main explosive column and the liner, and the main explosive column and the liner are prevented from sliding off from the large end of the shell.

Further, the structural parameters of the active liner and the metal liner are designed to ensure that the two sides of the following formula are basically equal:

in the formula, subscripts x and y represent an active liner and a metal liner respectively. Wherein beta represents the stitching angle, v₀Represents the stitching speed, alpha represents the liner inside half cone angle, and delta represents the deformation angle.

Has the advantages that:

(1) on the basis of not changing the outline structure and size of the existing energy-gathering warhead part, the structure of the double-cone composite shaped-charge liner is adopted, detonation waves generated after the main charge column explodes are utilized to drive the double-cone shaped-charge liner to collapse and deform, the metal shaped-charge liner at the top forms a precursor high-density metal jet flow, the large penetration of the armor is realized, the conical active shaped-charge liner at the bottom forms an explodable active rod body which enters into the hole along with the hole, the explosion is generated in the target of the armor, and therefore the high-efficiency damage to internal devices and personnel is realized by utilizing the release of gas and chemical energy;

(2) the invention has simple structure, better processing technology and lower cost;

(3) the scarf joint type serial penetration body formed by the invention is engaged front and back, and the active material can well enter the inside of a target, so that the problem that the rear stage warhead is difficult to follow when the traditional serial warhead is used for anti-armor is solved.

Drawings

Figure 1 is a schematic of the structure of a shaped charge configuration of the present invention.

Fig. 2 is a schematic structural diagram of the housing of the present invention.

Fig. 3 is a schematic structural view of the main grain of the present invention.

Fig. 4 is a schematic structural view of the pressing screw in the present invention.

Fig. 5 is a schematic structural view of the double-cone composite liner of the present invention.

FIG. 6 is a schematic diagram of an armor target with embedded serial explosion penetration body action formed by collapse and deformation of a biconical composite liner after main explosive columns are driven by explosion. Wherein, FIG. 6(a) is a schematic of a precursor high density metal jet penetration armor; fig. 6(b) is a schematic diagram of the trailing explosible active rod exploding inside the target to produce a strong after-effect damage.

Wherein, the explosive comprises 1-an initiating mechanism, 2-a shell, 3-a main explosive column, 4-a metal shaped charge liner, 5-an active shaped charge liner and 6-a pressing screw.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

The invention provides an energy-gathering charge structure capable of forming an embedded metal and active double penetration body, which can form a series-connection penetration body on the basis of not changing the overall dimension of the existing energy-gathering warhead part, can realize large penetration of an armored target, can explode in the target, and greatly improves the aftereffect damage effect.

The shaped charge structure of the invention is shown in figure 1 and comprises an initiation mechanism 1, a shell 2, a main explosive column 3, a metal shaped charge liner 4, an active shaped charge liner 5 and a pressing screw 6.

As shown in fig. 3, the main grain 3 is cylindrical as a whole, one end is provided with a biconical groove, the metal shaped charge cover 4 is conical, the bottom end is open, and the outer surface of the metal shaped charge cover 4 is tightly attached to the small conical pyramid groove of the main grain 3 through shellac varnish; the active shaped charge cover 5 is in a round table structure, two ends of the active shaped charge cover are opened, and the outer surface of the active shaped charge cover 5 is tightly attached to the large conical pyramid-shaped groove of the main charge column 3 through shellac varnish; wherein, as shown in fig. 5, the end surface of the small end of the active shaped charge liner is tightly attached to the end surface of the opening of the metal shaped charge liner; the shell 2 is in a stepped circular tube shape, two ends of the shell are provided with holes, an initiation mechanism 1 is arranged in the small end of the shell 2 and used for initiating main explosive, a main explosive column 3 is coaxially filled in the large end of the shell 2, the plane end of the main explosive column 3 is attached to the inner bottom surface of the shell 2, the joint of the bottom of the active explosive type cover 5 and the shell 2 is pressed by a circular ring-shaped pressing screw 6 (shown in figure 4), and the shell 2, the main explosive column 3, the metal explosive type cover 4 and the active explosive type cover 5 are tightly matched.

As shown in figure 3, the main grain 3 is pressed by a mature and reliable press-fitting process, and the material has a density of 1.70g/cm³The explosive 8701 has a grain diameter of 120mm and a length of 130 mm.

As shown in FIG. 5, the circular plane at the bottom of the metal liner 4 is connected with the circular plane at the small end of the active liner 5.

The material of the shell 2 adopts a common LY12 aluminum alloy (with the density of 2.78 g/cm)³) The thickness thereof was 5 mm.

The metal shaped charge liner 4 adopts a red copper shaped charge liner with a cone angle of 55 degrees, the caliber and the thickness are respectively 70mm and 2.5mm, and the formed precursor high-density metal jet can effectively realize penetration and damage to an armored target.

The active shaped charge liner 5 is prepared by cold press molding and sintering hardening of polytetrafluoroethylene, aluminum, tungsten and tantalum powder mixture, the taper angle is 90 degrees, the thickness is 8mm, and the diameters of the small end and the large end are 70mm and 120mm respectively.

The material of the pressing screw 6 adopts a common Q235 steel metal material, and the density of the pressing screw is 7.85g/cm³。

The working principle of the shaped charge structure of the invention is shown in fig. 6: the charge structure is mounted on an anti-armor projectile, and when the projectile body reaches a predetermined explosive height, the shaped charge structure ignites and detonates the main explosive column 3 by the initiation mechanism 1. After the main explosive column 3 explodes, under the restraint of the shell 2, part of detonation wave energy firstly acts on the metal shaped charge cover 4 to cause the metal shaped charge cover 4 to axially converge and form a precursor high-density metal jet flow, and then the detonation wave further causes the active shaped charge cover to collapse to form a trailing explosive active rod body. In this embodiment, penetration of a 500mm thick armored target by a precursor high-density metal jet through self kinetic energy is realized to form a through hole (as shown in fig. 6 (a)), and a trailing explosible active rod body enters the inside of the target through the through hole formed before and explodes inside the target (as shown in fig. 6 (b)), and the distance between the leading explosible active rod body and the target is 8m³The explosive overpressure created in the range is about 0.16 MPa.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.