A segmented anti-impact shaped charge structure

Abstract

The application discloses a segmented anti-impact shaped charge structure, which optimizes a traditional shaped charge structure, changes the structures of a partition plate, a liner and a main charge, additionally arranges a booster shell and a center screw plug, thereby forms a center rigid support structure through an initiating mechanism, the booster shell, the center screw plug and the liner at the axis of a shell body, combines a gap between the main charge and a secondary charge, cooperates with the partition plate to directly transfer most of inertial forces to the shell body through the center rigid support structure, thereby greatly reduces the dangerous interface stress of the main charge and the secondary charge, effectively reduces the actual stress peak value of internal explosives under the condition of receiving an axial load from a bottom surface, and guarantees the safety of the system under the condition of receiving external impact.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering blasting, in particular to a segmented anti-impact shaped charge structure. BACKGROUND

[0002] The shaped charge structure is a device for destroying a hard target with a certain thickness, and is widely used in various engineering blasting technical fields such as oil perforating bullets, rock and soil drilling, directional blasting, etc. The traditional shaped charge structure, as shown in the figure, mainly includes a detonating mechanism 101, a booster 102, a sub-charge 103, a baffle 104, a main charge 105, a liner 106, a shell 107, a pressure ring 108, etc. Its working mode is as follows: the detonating mechanism sends a signal to detonate the explosive, and uses the energy concentration effect of the explosive to crush the liner, gather high-temperature and high-speed metal jet, and then perform hole opening destruction on the predetermined target. In this process, the main function of the baffle is to control the propagation direction of the detonation and adjust the detonation wave shape acting on the liner; and the main function of the shell is to provide certain circumferential constraint and improve the destruction power, and at the same time provide structural support for the components of the shaped charge in storage, transportation and use environment. Figure 1 Generally, the research on the shaped charge structure often focuses on its destructive power, and engineers use methods such as improving the structure, increasing the charge, and replacing high-power explosives to increase the hole opening depth or diameter of the shaped charge. However, at the same time, the shaped charge structure as a dangerous device containing explosives also has certain safety hazards under severe impact, impact and overload environment, so special care is needed during transportation, service and use of the shaped charge structure itself or the system it is in, which also restricts its application in more severe conditions.

[0003] For the impact safety of explosives, the traditional solution is mainly focused on the explosive itself: such as the desensitization of the explosive, the modification, coating of the explosive particles and the research on the explosive charging process technology. However, a highly insensitive explosive itself often means that the initiation and function are not ideal, which seriously affects the fundamental purpose of the shaped charge structure. Therefore, the inventors consider starting from the design of the shaped charge structure and optimizing and improving the traditional shaped charge structure to solve the impact safety problem of the explosive.

[0004]

[0005] ​Under external impact load, all components inside the shell of the shaped charge are pressed in the direction opposite to the acceleration under the action of inertial force, and finally the pressure is all concentrated on the contact surface between the charge and the shell in the direction of the impact load. According to the principle of impact dynamics, the stress of the dangerous section of an object under pressure is negatively correlated with the pressure area, so the impact stress of the explosive in the structure of the shaped charge is also related to the direction of the impact force. In the traditional structure of the shaped charge, due to the relationship between the overall length-diameter ratio and the shape of the liner, the bottom surface of the charge with a smaller contact area, i.e. the upper surface of the sub-charge shown in Figure 1 is usually identified as the most dangerous bottom surface, i.e. in the same process of external impact, the impact load acting on the upper end surface of the shell shown in Figure 1 will cause the most serious damage to the explosive charge. SUMMARY

[0006] In view of the safety problem of the explosive in the existing structure of the shaped charge when facing the impact and shock in the direction of the bottom surface of the charge, the application provides a segmented anti-impact shaped charge structure, which can effectively reduce the actual stress peak value of the internal explosive under the condition of the bottom surface axial load, thereby ensuring the safety of the system under the condition of external impact.

[0007] The application adopts the following specific technical solutions:

[0008] A segmented anti-impact shaped charge structure, which comprises an initiating mechanism, a booster shell, a sub-charge, a partition plate, a main charge, a pressure ring, a booster explosive, a center plug and a liner installed in a shell.

[0009] The shell is a cylindrical structure, an installation plate with a central hole is arranged on the upper side of the inside of the shell, and an installation groove is arranged on the bottom end side wall of the inside of the shell.

[0010] The initiating mechanism is a “T” shaped convolute structure, which is composed of an upper large diameter part and a lower small diameter part; the large diameter part is fixedly connected to the top surface of the installation plate; the small diameter part penetrates through the central hole of the installation plate.

[0011] The booster shell is a cylindrical structure with an open upper end, a closed lower end and a protruding stud, the inner wall of the upper end is closely attached to the initiating mechanism, and the outer wall of the upper end is closely attached to the inner wall of the central hole of the installation plate; a plurality of openings are distributed on the circumferential side wall of the booster shell, so that the booster explosive can uniformly initiate the sub-charge after detonation.

[0012] The booster explosive is a cylindrical structure, which is inserted into the booster shell as a whole, the top surface is closely attached to the bottom surface of the small diameter part of the initiating mechanism, and is bonded and matched with the booster shell.

[0013] The partition plate is a cylindrical structure with a central mounting hole, the upper end surface is bonded to the sub-charges and the lower end surface is bonded to the main charges, and the circumferential surface is matched with the gap between the sub-charges and the main charges and is coated with an inert lubricating coating.

[0014] The central screw plug is inserted into the central mounting hole of the partition plate in a shape matching manner, the top surface is tightly combined with the bottom surface of the booster shell, and the central screw plug is provided with a blind hole with internal threads at the center of the top surface and the bottom surface, the blind hole of the top surface is threadedly connected with the threaded rod, and the blind hole of the bottom surface is threadedly connected with the top end of the shell.

[0015] The bottom end of the shell is provided with an annular flange extending into the limiting groove, and the outer side surface is bonded to the main charges;

[0016] The pressing ring is fixedly connected in the mounting groove of the shell and tightly presses the annular flange;

[0017] The main charges are installed between the shell, the shell and the partition plate, and are bonded to the bottom surface of the partition plate and the outer side surface of the shell; the top surface of the main charges has a gap with the bottom surface of the sub-charges;

[0018] The sub-charges are installed between the shell, the mounting plate, the partition plate and the booster shell, and are bonded to the mounting plate and the partition plate;

[0019] The circumferential outer side surfaces of the main charges and the sub-charges are matched with the gap between the shell and are coated with an inert lubricating coating;

[0020] The initiation mechanism, the booster shell, the central screw plug and the shell jointly form a central rigid support structure.

[0021] Further, the sub-charges are a reverse "concave" shaped rotary body structure with a central hole, and the bottom end inner plane of the concave pit is bonded to the top surface of the partition plate.

[0022] Further, the main charges are a cylindrical structure with a central hole, the top surface is provided with a central pit, the top end central pit plane is bonded to the bottom surface of the partition plate, and the inner wall surface of the central hole is bonded to the shell.

[0023] Further, the lower end of the central screw plug is provided with a stepped outer edge;

[0024] The bottom end of the partition plate is provided with a stepped hole;

[0025] The stepped outer edge is in a trapezoidal shape cooperation with the stepped hole, for limiting the diaphragm in the circumferential and axial directions.

[0026] Further, the shell is made of high-strength metal material.

[0027] The booster shell, the press ring and the center plug are all made of metal material.

[0028] The diaphragm is made of inert high polymer material with high acoustic impedance and higher elastic modulus than that of the explosive, so as to bear stress and control the explosive detonation sequence to enhance the shaped charge effect.

[0029] The liner is made of metal material with high acoustic velocity and good plasticity.

[0030] The adhesive cooperation uses adhesive with good compatibility with the explosive.

[0031] The inert lubricating coating uses lubricant with good compatibility with the explosive, so as to alleviate the possible process gap friction in the high overload impact process, which may cause the local temperature of the explosive column to rise significantly in a short time.

[0032] Further, the booster shell, the press ring and the center plug are all made of high-strength aluminum alloy, for reducing the mass while ensuring the structural strength.

[0033] The diaphragm is made of modified nylon, polycarbonate, high-density polyethylene or polytetrafluoroethylene.

[0034] The shell is made of 35CrMnSi steel or 40CrMnVB steel.

[0035] The liner is made of red copper, tantalum alloy, nickel alloy or titanium alloy.

[0036] The adhesive is shellac paint.

[0037] The lubricant is paraffin.

[0038] Further, the booster explosive is pressed from booster explosive.

[0039] The sub-charge and the main charge are both pressed from high-energy explosive.

[0040] Further, the initiating mechanism and the mounting plate are connected by screws.

[0041] The booster explosive is bonded and cooperated with the booster shell by glue injection.

[0042] Further, the upper and lower end faces of the diaphragm and each corner of the sub-charge and the main charge are all provided with rounded corners, for reducing the occurrence of local stress concentration points.

[0043] Further, the partition plate is a conical, circular table or cylindrical structure.

[0044] The shaped charge is a kind of horn-shaped structure, a combination of curved and straight, a combination of straight and cone or a bell shape.

[0045] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0046] 1. The segmented anti-impact shaped charge structure of the present application optimizes the traditional shaped charge structure. By changing the structure of the partition plate, the shaped charge and the main charge, and additionally providing a booster shell and a center plug, a central rigid support structure is formed by the initiation mechanism, the booster shell, the center plug and the shaped charge at the center of the shell, and most of the inertial force is transmitted to the shell through the central rigid support structure, thereby greatly reducing the dangerous interface stress of the main charge and the auxiliary charge, effectively reducing the actual stress peak of the internal explosive under the condition of receiving the bottom axial load, and ensuring the safety of the system under the condition of receiving external impact.

[0047] 2. The segmented anti-impact shaped charge structure of the present application adopts a gap design between the main charge and the auxiliary charge, and in combination with the central rigid support structure design, the internal stress of the shaped charge structure can be segmented, and the cumulative effect of the inertial force can be reduced.

[0048] 3. In the segmented anti-impact shaped charge structure of the present application, the booster shell is made of metal material, which can meet the strength requirement of the central rigid support structure, and a plurality of openings are distributed on the circumferential side wall, which is convenient for stable and uniform initiation of the auxiliary charge.

[0049] 4. In the segmented anti-impact shaped charge structure of the present application, the bottom end of the shaped charge is provided with an annular flange, and the annular flange is pressed into the limiting groove of the shell by a press ring, the upper end of the shaped charge is threadedly connected with the center plug, the fixing of the shaped charge and the shell is realized, and the pressure of the shaped charge on the main charge is greatly reduced.

[0050] 5. In the segmented anti-impact shaped charge structure of the present application, an inert lubricating coating is applied to the circumferential outer side of the main charge and the auxiliary charge. Through the inert lubricating coating technology, the safety problem caused by the significant increase of the local temperature of the explosive column in a short time due to the deformation, displacement and friction of each component during high overload impact can be alleviated.

[0051] 6. The segmented anti-impact shaped charge structure of the present application adopts the above structure, which does not affect the damage capacity of the shaped charge structure. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is a sectional view of the shaped charge structure in the prior art;

[0053] Figure 2 A sectional view of the segmented anti-impact shaped charge structure of the present application;

[0054] Figure 3 A perspective view of the booster shell and booster.

[0055] Prior art: 101 - initiating mechanism, 102 - booster, 103 - subcharge, 104 - partition, 105 - main charge, 106 - liner, 107 - shell, 108 - press ring.

[0056] The present application: 1 - initiating mechanism, 2 - booster shell, 3 - subcharge, 4 - partition, 5 - main charge, 6 - press ring, 7 - shell, 8 - booster, 9 - center plug, 10 - liner. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0058] As Figure 2 As shown in the structure, the embodiment provides a segmented anti-impact shaped charge structure, the shaped charge structure is a rotary body structure, and comprises a shell 7 and an initiating mechanism 1, a booster shell 2, a subcharge 3, a partition 4, a main charge 5, a press ring 6, a booster 8, a center plug 9 and a liner 10 installed in the shell.

[0059] The shell is a cylindrical structure, an installation plate with a center hole is arranged on the upper side of the inside, and an installation groove is arranged on the bottom end side wall of the inside; the shell is made of high-strength metal material, such as 35CrMnSi steel or 40CrMnVB steel.

[0060] The initiating mechanism is a "T" shaped rotary body structure, which is composed of an upper large-diameter part and a lower small-diameter part; the large-diameter part is fixedly connected to the top surface of the installation plate; the initiating mechanism and the installation plate can be connected through a screw; the small-diameter part passes through the center hole of the installation plate. The initiating mechanism is a conventional initiating mechanism, which ensures reliable structure and reliable initiation.

[0061] As Figure 2 and Figure 3As shown in the structure, the booster shell is a cylindrical structure with an open upper end and a closed lower end, and has a stud protruding from the lower end. The inner wall of the upper end is tightly fitted with the initiating mechanism, and the outer wall of the upper end is tightly fitted with the inner wall of the central hole of the mounting plate. The circumferential side wall of the booster shell is provided with a plurality of openings to enable uniform initiation of the secondary charge after the booster charge explodes. The diameter of the stud is smaller than the outer diameter of the booster shell. The opening form, number and shape of the booster shell can be selected as long as the structural strength is ensured and reliable and uniform transmission of the explosion is achieved.

[0062] The booster charge is in the form of a cylinder and is inserted into the booster shell as a whole. The top surface is tightly fitted with the bottom surface of the small-diameter portion of the initiating mechanism and is adhesively connected to the booster shell. The booster charge can be adhesively connected to the booster shell by means of glue injection.

[0063] The partition plate is in the form of a cylinder with a central mounting hole. The upper end surface is adhesively connected to the secondary charge, and the lower end surface is adhesively connected to the main charge. The circumferential surface is in gap cooperation with the secondary charge and the main charge and is coated with an inert lubricating coating.

[0064] The central screw plug is in the form of a cylinder and is inserted into the central mounting hole of the partition plate in a shape-fitting manner. The top surface is tightly fitted with the bottom surface of the booster shell, and the partition plate is pressed against the bottom surface of the booster shell. The lower end of the central screw plug is provided with a stepped outer edge with a diameter larger than the outer diameter of the upper end of the central screw plug. The bottom end of the partition plate is provided with a stepped hole. The stepped outer edge and the stepped hole are in shape cooperation for circumferential and axial positioning of the partition plate. The stepped outer edge of the central screw plug and the stepped hole of the partition plate are in shape cooperation to fix the partition plate between the central screw plug and the booster shell. The central screw plug is provided with a blind hole with internal threads at the center of the top surface and the bottom surface. The blind hole at the top surface is threadedly connected with the stud of the booster shell, and the blind hole at the bottom surface is threadedly connected with the top end of the shaped charge liner, so that the central screw plug integrally connects the booster shell and the shaped charge liner.

[0065] The bottom end of the shaped charge liner is provided with an annular flange extending into the limiting groove, and the outer side surface is adhesively connected to the main charge. The annular flange can be formed by flanging.

[0066] The compression ring is fixedly connected in the mounting groove of the shell and tightly presses the annular flange. The compression ring is in the form of a circular ring with external threads and is threadedly connected with the internal threads of the mounting groove of the shell to tightly press the annular flange of the shaped charge liner.

[0067] The main charge is installed between the shell, the liner and the partition plate, and is bonded to the bottom surface of the partition plate and the outer surface of the liner; the top surface of the main charge has a gap with the bottom surface of the secondary charge; the main charge is a cylindrical structure with a center hole, the center hole is matched with the outer surface of the liner, the outer diameter of the main charge is smaller than the inner diameter of the shell, and the circumferential direction of the main charge is matched with the shell with a gap and is coated with an inert lubricating coating; the top surface of the main charge is provided with a central pit, and the plane of the central pit at the top end is used as a process reference to bond the partition plate, and the inner wall surface of the center hole is used as a process reference to bond the liner.

[0068] The secondary charge is installed between the shell, the mounting plate, the partition plate and the booster shell, and is bonded to the mounting plate and the partition plate; the circumferential direction of the secondary charge is matched with the shell with a gap and is coated with an inert lubricating coating. The secondary charge is a reverse "concave" shaped rotary body structure with a center hole, and a pit communicating with the center hole is provided on the bottom surface of the secondary charge, and the secondary charge is matched with the outer surface of the booster shell and the partition plate through the center hole and the pit; the inner plane of the pit at the bottom end of the secondary charge is used as a process reference to bond the top surface of the partition plate.

[0069] The initiation mechanism, the booster shell, the center plug and the liner jointly form a center rigid support structure.

[0070] In the above energy-gathering charge structure, the booster shell, the compression ring and the center plug are all made of metal materials, such as high-strength aluminum alloy, to ensure the structural strength while reducing the mass; the partition plate is made of an inert high-molecular material with high acoustic impedance and high elastic modulus than the explosive, to facilitate bearing stress and controlling the explosive detonation sequence to enhance the energy-gathering effect, such as modified nylon, polycarbonate, high-density polyethylene, polytetrafluoroethylene, etc.; the liner is made of a metal material with high sound speed and good plasticity, such as red copper, tantalum alloy, nickel alloy, titanium alloy, etc.; the bonding between the components uses a bonding agent with good compatibility with the explosive, such as shellac paint; the inert lubricating coating uses a lubricant with good compatibility with the explosive, such as paraffin, to facilitate relieving the possible process gap friction between the explosive column and the liner during the high-overload impact process; the booster explosive is pressed from booster explosive; the secondary charge and the main charge are both pressed from high-energy explosive, and are provided with rounded corners at each edge and corner to minimize the occurrence of local stress concentration points.

[0071] Further, the upper and lower end surfaces of the partition plate and the edges and corners of the secondary charge and the main charge are all provided with rounded corners to reduce the occurrence of local stress concentration points; the partition plate can be a conical, circular truncated cone or cylindrical structure; the liner is a horn-like structure, a combination of curved and straight shapes, a combination of straight and conical shapes, or a bell shape; when the liner is a horn-like structure, the outer conical surface of the liner is used as a process reference to bond the main charge.

[0072] The working principle of the above-mentioned shaped charge structure is divided into two parts: the working principle of segmented impact protection and the working principle of shaped charge destruction:

[0073] 1. The working principle of segmented impact protection is:

[0074] The rigidly connected detonator mechanism 1, booster charge case 2, center screw plug 9, and liner 10 together form the central rigid support structure. Both ends of the central rigid support structure are rigidly fixed directly to the shell 7. Furthermore, the initial gap between the main charge 5 and the secondary charge 3 requires that force transmission between the main and secondary charges pass through the partition 4. The partition 4 is fixed in place by the booster charge case 2 and the center screw plug 9. The elastic modulus of the partition 4 material and the components of the central rigid support structure are higher than that of the explosive. Therefore, during an axial impact, most of the pressure transmitted through the partition 4 acts directly on the shell 7 through the central rigid support structure, effectively dissipating the actual stress within the explosive.

[0075] When the axial force Figure 2 When the upper force acts on the shell 7 as shown, the components enclosed within the shell 7 generate upward pressure due to inertia. Among them, the detonator 1 and the pressure ring 6 are directly rigidly connected to the shell 7 and do not directly contact the explosive, so they cannot affect the explosive. The inertial force of the liner 10 acts on the shell 7, the main charge 5, and the center plug 9. Since the shell 7 and the center plug 9 are both metal components, the vast majority of the pressure is transmitted to the shell 7 directly or indirectly through the central rigid support structure, and the main charge 5 bears relatively low pressure during this process. Similarly, the inertial force of the main charge 5 and the small amount of pressure transmitted by the liner 10 continue to act upward. Due to the initial gap between the main charge 5 and the secondary charge 3, the accumulated pressure can only act on the partition 4 and is further distributed through the partition 4. The vast majority of the accumulated pressure is once again directly transmitted to the shell 7 by the central rigid support structure. At this point, the maximum stress on the main charge 5 occurs at the interface between the main charge 5 and the partition 4. This maximum stress is equal to the inertial force of the main charge 5 plus the accumulated pressure from the small amount of liner 10, which is significantly lower than that of a conventional shaped charge structure. At this point, the maximum stress on the secondary charge 3 occurs at the interface between the secondary charge 3 and the shell 7. This maximum stress is equal to the inertial force of the secondary charge 3 plus the accumulated pressure from the partition 4 and the small amount of pressure from the liner 10, the main charge 5, and the partition 4 itself. In a conventional shaped charge structure, the pressure caused by the inertia of the internal components is completely superimposed on the interface between the secondary charge 3 and the shell 7.

[0076] Obviously, compared with the traditional shaped charge structure, the actual stress inside the explosive in the above shaped charge structure is significantly reduced.

[0077] 2. The working principle of shaped energy destruction is:

[0078] Similar to the shaped charge structure, the segmented anti-impact shaped charge structure also sends the detonation signal to the booster 8 by the detonator 1, the booster 8 is detonated and detonates the sub-charge 3 through the booster shell 2 circumferential opening. The sub-charge 3 completes the transmission of explosion with the help of the baffle 4, and transmits the explosion to the main charge 5. The main charge 5 is detonated and uses the shaped effect to collapse the liner 10, gather to form a high-temperature, high-speed metal jet, and then damage the target.

[0079] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A segmented anti-collision shaped charge structure, characterized in that: It includes an initiating mechanism, a booster charge case, an auxiliary charge, a partition, a main charge, a pressure ring, a booster charge, a center screw plug and a charge liner installed in the shell; The housing is a cylindrical structure, with a mounting plate with a center hole provided on the upper side thereof and a mounting groove provided on the side wall of the bottom end thereof; The detonating mechanism is a "T"-shaped gyroscopic structure, consisting of a large diameter portion at the top and a small diameter portion at the bottom; the large diameter portion is fixedly connected to the top surface of the mounting plate; the small diameter portion passes through the center hole of the mounting plate; The booster charge case is a cylindrical structure with an open upper end, a closed lower end, and a protruding stud. The inner wall of the upper end is tightly fitted with the detonating mechanism, and the outer wall of the upper end is tightly fitted with the inner wall of the central hole of the mounting plate. The circumferential side wall of the booster charge case is distributed with multiple openings to ensure that the auxiliary charge can be evenly detonated after the booster charge detonates. The booster charge is a cylindrical structure, which is inserted into the booster charge shell as a whole, with the top surface tightly fitting the bottom surface of the small diameter portion of the detonator mechanism and bonding with the booster charge shell; The partition is a cylindrical structure with a central mounting hole. The upper end surface is a process reference for bonding with the auxiliary charge, and the lower end surface is a process reference for bonding with the main charge. The circumference is clearance-matched with the auxiliary charge and the main charge, and an inert lubricating coating is applied. The central screw plug is inserted into the central mounting hole of the partition in a form-fitting manner, and the top surface is tightly fitted with the bottom surface of the explosive shell, so as to press the partition against the explosive shell; the central screw plug is provided with blind holes with internal threads at the center of the top and bottom surfaces, the blind hole on the top surface is threadedly connected to the stud, and the blind hole on the bottom surface is threadedly connected to the top end of the liner; The bottom end of the liner is provided with an annular flange extending into the mounting groove, and is bonded to the main charge with the outer surface as a process reference; The pressure ring is fixedly connected to the mounting groove of the housing and presses the annular flange tightly; The main charge is installed between the liner, the shell and the partition, and is bonded to the bottom surface of the partition and the outer surface of the liner; a gap is formed between the top surface of the main charge and the bottom surface of the secondary charge; The auxiliary charge is installed between the housing, the mounting plate, the partition and the booster charge, and is bonded to the mounting plate and the partition; The circumferential outer side surfaces of the main charge and the auxiliary charge are both clearance-matched with the shell and coated with an inert lubricating coating; The detonating mechanism, the explosive shell, the central screw plug and the charge liner together form a central rigid support structure.

2. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The auxiliary charge is an inverted "concave" rotatory structure with a central hole, and is bonded to the top surface of the partition with the inner plane of the pit at the bottom as the process reference.

3. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The main charge is a cylindrical structure with a center hole, and a center pit is provided on the top surface. The center pit plane at the top is used as the process reference for bonding with the bottom surface of the partition, and the inner wall surface of the center hole is used as the process reference for bonding with the charge liner.

4. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The lower end of the center screw plug is provided with a stepped outer edge; The bottom end of the partition is provided with a stepped hole; The stepped outer edge matches the shape of the stepped hole and is used to limit the partition in the circumferential and axial directions.

5. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The shell is made of high-strength metal material; The explosive shell, the pressure ring and the center screw plug are all made of metal materials; The partition is made of an inert polymer material with high acoustic impedance and higher elastic modulus than the explosive, so as to bear the force and control the explosive detonation sequence to enhance the energy gathering effect; The liner is made of metal material with high sonic velocity and good plasticity; The bonding agent used is a good binder compatible with the explosive; The inert lubricating coating adopts a lubricant with good compatibility with explosives.

6. The segmented anti-collision shaped charge structure according to claim 5, characterized in that: The explosive charge shell, the pressure ring and the center screw plug are all made of high-strength aluminum alloy to ensure structural strength while reducing weight; The partition is made of modified nylon, polycarbonate, high-density polyethylene or polytetrafluoroethylene; The shell is made of 35CrMnSi steel or 40CrMnVB steel; The liner is made of copper, tantalum alloy, nickel alloy or titanium alloy; The binder is shellac; The lubricant is paraffin.

7. The segmented impact-resistant shaped charge structure according to claim 1, wherein: The booster explosive is formed by compressing the booster explosive; The auxiliary charge and the main charge are both formed by pressing high-energy explosives.

8. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The detonating mechanism is connected to the mounting plate via screws; The booster charge is bonded to the booster charge shell by means of glue injection.

9. The segmented anti-collision shaped charge structure according to claim 1, characterized in that: The outer edges of the upper and lower end surfaces of the partition and the corners of the auxiliary charge and the main charge are all provided with chamfers to reduce the occurrence of local stress concentration points.

10. The segmented impact-resistant shaped charge structure according to claim 1, wherein: The partition is a conical, truncated cone or cylindrical structure; The liner is in the shape of a trumpet, a combination of straight and curved shapes, a combination of straight and conical shapes, or a bell shape.

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