Double-ball kinetic energy bomb with two-stage high-low pressure system

Abstract

The invention discloses a double-ball kinetic energy projectile with a two-stage high-low pressure system, which comprises a projectile assembly and a launching assembly, and the projectile assembly is composed of two coaxially stacked multifunctional spherical kinetic energy projectiles and a sealing gasket. The bullet is of a multi-layer structure, the outer layer is a polytetrafluoroethylene surface layer, the middle layer is polyurethane foam doped with silicon dioxide nanoparticles, and an interlayer is filled with fragile high-pressure balls. The inner core is divided into four cavities which are filled with OC stimulation powder and fluorescent dyeing powder. The launching assembly comprises a cartridge case element, a launching charge, a boosting element and a pushing disc, and a two-stage high-low pressure system structure is adopted. During launching, gunpowder fuel gas sequentially breaks through the two stages of fire transfer hole diaphragms, the boosting element and the pushing disc are pushed through fuel gas graded expansion, and the initial speed of the projectile is remarkably increased. After the projectile impacts a target, high-pressure nitrogen release is triggered through interlayer compression, powder is driven to be sprayed through directional air holes, and the composite functions of kinetic energy striking, stimulation dispersing and dyeing marking are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of riot control ammunition, in particular to a double-ball kinetic energy bullet with a two-stage high and low pressure system. Background Art

[0002] Riot control ammunition needs to take into account the dual needs of effectively controlling targets and minimizing damage. Traditional riot control kinetic ammunition mostly adopts a single-function design, such as relying only on kinetic impact or chemical stimulation, and has the problem of a single mode of action and insufficient comprehensive effectiveness. For example, some kinetic bullets rely on high-speed impact to achieve suppression, but are prone to accidental injuries due to excessive kinetic energy; and although chemical stimulant bullets can disperse crowds, they lack precise marking functions and are difficult to track targets in complex scenarios. In addition, the existing projectile structures are mostly single-layer or simple composite designs, which make it difficult to effectively release internal loads upon impact, resulting in low diffusion efficiency of irritants or dyes, and an inability to achieve a balance between kinetic energy transfer and load release.

[0003] In terms of the launch system, conventional ammunition mostly uses a single-stage gas propulsion structure. The energy release of gunpowder gas is concentrated and uncontrollable, which can easily lead to large fluctuations in the initial velocity of the projectile and significant recoil, affecting shooting accuracy and operational safety. Although some designs attempt to optimize performance by adjusting the charge, it is difficult to achieve graded buffering and efficient use of gas pressure, which limits the improvement of the overall performance of the projectile. In addition, the integrated design of existing projectiles and launch components often ignores the synergy of multi-stage energy transfer, resulting in system redundancy or excessive structural complexity, which is not conducive to practical application.

[0004] In terms of material and structural innovation, the surface of traditional projectiles is mostly made of hard plastic or rubber materials. Although they have a certain cushioning effect, they are not resistant to deformation and cannot maintain structural integrity in high-speed collisions to achieve effective load release. Existing designs for filling stimulants mostly use simple cavity structures and lack a pressure trigger mechanism, which results in delayed or uneven release of stimulants, affecting actual combat effectiveness.

[0005] Therefore, it is urgent to develop a composite anti-riot ammunition that integrates kinetic strike, rapid stimulation dispersal and long-term marking functions, and through the collaborative design of a graded gas propulsion system and a multi-layer trigger structure, solve the problems of low energy utilization, single function and insufficient reliability in the existing technology, so as to meet the urgent needs for high efficiency, safety and multi-scenario adaptability in modern riot control tasks. Summary of the invention

[0006] The object of the present invention is to provide a double-ball kinetic energy bullet with a two-stage high and low pressure system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a double-ball kinetic energy projectile with a two-stage high and low pressure system, comprising a projectile assembly and a launching assembly, characterized in that: The projectile assembly includes a multifunctional spherical kinetic energy projectile and a sealing pad. The multifunctional spherical kinetic energy projectile is a multilayer spherical structure that wraps an inner core. The number of the multifunctional spherical kinetic energy projectiles is 2, and the 2 multifunctional spherical kinetic energy projectiles are coaxially stacked. The multifunctional spherical kinetic energy projectile includes a projectile skin layer, a projectile middle layer, a projectile interlayer and a projectile inner core. The projectile skin layer, the projectile middle layer, the projectile interlayer and the projectile inner core are concentrically arranged. The projectile skin layer is the outermost layer of the multifunctional spherical kinetic energy projectile. The projectile skin layer is made of polytetrafluoroethylene material. The surface of the projectile skin layer is laser engraved with micron-level grooves. The inner wall surface of the projectile skin layer wraps the projectile middle layer. The projectile middle layer is made of polyurethane foam material. The polyurethane foam material used to make the projectile middle layer is doped with silicon dioxide nanoparticles to improve its strength-density ratio. The projectile skin layer and the projectile middle layer are densely opened to penetrate the wall. The directional micro-pores of the projectile middle layer and the projectile inner core are the projectile interlayer, the projectile interlayer is filled with a fragile high-pressure ball, the fragile high-pressure ball is filled with compressed nitrogen, the storage pressure of the compressed nitrogen inside the fragile high-pressure ball is 1.5Mpa, the projectile inner core is at the center of the multifunctional spherical kinetic energy projectile, the projectile inner core is made of fragile materials, the projectile inner core comprises radial partitions, axial partitions, a first load cavity, a second load cavity, a third load cavity, a fourth load cavity and an inner core ball wall, the radial partitions and the axial partitions are arranged crosswise, the radial partitions, the axial partitions and the inner core ball wall divide the first load cavity, the second load cavity, the third load cavity and the fourth load cavity into four chambers, the first load cavity and the third load cavity are filled with OC stimulation powder, the second load cavity and the fourth load cavity are filled with fluorescent dye powder, and the upper side of the upper multifunctional spherical kinetic energy projectile is against the sealing pad; The two coaxially stacked multifunctional spherical kinetic projectiles are loaded inside the launching assembly, and the launching assembly includes a cartridge case element, a propellant charge, a booster element and a push plate. The cartridge case element is cylindrical and made of stainless steel. The cartridge case element includes a cartridge barrel, a cartridge barrel mouth, a cartridge barrel bottom edge, a cartridge barrel support ring, a cartridge barrel groove, a primer hole, a high-pressure chamber, a first-level fire transfer hole, a first-level low-pressure chamber and a second-level low-pressure chamber 2-1-10. The cartridge barrel is a cup-shaped structure with an open upper end and a closed lower end. The opening at the upper end of the cartridge barrel is the cartridge barrel mouth, and a sealing pad is clamped on the cartridge barrel mouth, and the cartridge barrel mouth is in contact with the sealing pad. The surfaces are fixed with 814 glue to achieve sealing, the protruding side wall surface of the lower end of the cartridge is provided with a cartridge bottom edge, the inner wall surface of the middle part of the cartridge is protrudingly provided with a cartridge support ring, the cartridge support ring is in a circular ring structure, the upper end surface of the bottom of the cartridge is provided with a cartridge groove, the cartridge groove is opened in a circular manner with the central axis of the cartridge as the axis, a cylindrical primer hole is opened at the axis center of the bottom end surface of the cartridge, a cylindrical high-pressure chamber is integrated inside the cartridge and on the upper side of the primer hole, a cylindrical first-level fire transfer hole is opened at the axis center of the upper end surface of the high-pressure chamber, the first-level fire transfer hole is sealed by a brass diaphragm, the inside of the cartridge case element is filled with propellant, the propellant charge pack The invention comprises a primer and a propellant, wherein the primer is a mechanical impact primer, the primer is riveted inside the primer hole, the propellant is loaded inside the high-pressure chamber, the propellant is bulk smokeless powder, the booster element is clamped in the lower cavity of the cartridge, the booster element comprises an upper cylinder of the booster element, a lower cylinder of the booster element, a booster element retaining ring, an upper cavity of the booster element, a lower cavity of the booster element and a secondary fire transfer hole, the upper cylinder of the booster element encloses an upper cavity of the booster element, the lower cylinder of the booster element encloses a lower cavity of the booster element, after the booster element retaining ring is clamped into the groove of the cartridge, the side wall of the lower cylinder of the booster element abuts against the inner wall of the cartridge, The lower end face of the lower cylinder of the booster element abuts against the upper end face of the bottom of the cartridge, and the upper side of the cartridge support ring abuts against a push plate, the push plate is cylindrical, and is made of high-temperature resistant plastic. The contact surfaces between the push plate, the cartridge support ring and the inner wall of the cartridge are sealed with hot-melt adhesive. The cavity inside the lower cavity of the booster element and outside the high-pressure chamber is a primary low-pressure chamber, and the cavity surrounded by the upper cavity of the booster element and the lower end face of the push plate is a secondary low-pressure chamber. Secondary fire transfer holes are provided on the connecting surface between the upper cylinder of the booster element and the lower cylinder of the booster element, and the number of the secondary fire transfer holes is 5, and the 5 secondary fire transfer holes are sealed by a brass diaphragm.

[0008] Preferably, the multifunctional spherical kinetic energy projectile, sealing pad, shell component, booster component and push plate are all axisymmetric structures, and the symmetry axes of the multifunctional spherical kinetic energy projectile, sealing pad, shell component, booster component and push plate coincide with each other.

[0009] Preferably, the high-pressure chamber and the first-level low-pressure chamber constitute a first-level high-low-pressure system, and the first-level low-pressure chamber and the second-level low-pressure chamber constitute a second-level high-low-pressure system.

[0010] Preferably, the primer is ignited by the impact of the firing pin to ignite the propellant, and the combustion of the propellant generates gas that breaks through the brass diaphragm that seals the primary fire transfer hole, and the gas generated by the combustion of the propellant enters the primary low-pressure chamber from the primary fire transfer hole, and the gunpowder gas breaks through the brass diaphragm that seals the secondary fire transfer hole and enters the secondary low-pressure chamber, and the gas pushes the booster element to separate from the shell element, and the booster element completes a stable impact on the push plate, and the push plate pushes the projectile assembly to break through the sealing gasket and enter the secondary low-pressure chamber to continue to apply thrust to the push plate, thereby increasing the multifunctional spherical kinetic energy projectile. Exit speed, after the multifunctional spherical kinetic projectile hits the target, it realizes a kinetic strike on the living target, the projectile surface layer and the projectile middle layer are quickly compressed, absorb part of the impact energy, crush the high-pressure ball in the projectile interlayer, and then crush the inner core of the projectile, the high-pressure nitrogen stored in the high-pressure ball is quickly released, and a blasting sound is emitted, and the high-pressure nitrogen pushes the OC stimulation powder and the fluorescent dyeing powder in the inner core of the projectile, and sprays them at high speed from the directional micro-pores that penetrate the projectile surface layer and the projectile middle layer, thereby realizing the stimulation, dispersal and dyeing marking of the living target.

[0011] Compared with the prior art, the present invention has the following advantages: (1) The present invention achieves precise coordination of kinetic energy and chemical functions through a multi-layer composite projectile design. The projectile adopts a four-layer structure of a skin layer (polytetrafluoroethylene), an intermediate layer (nano-enhanced polyurethane foam), an interlayer (fragile high-pressure ball) and an inner core (cavity load). The micron-scale grooves of the skin layer and the low friction characteristics of polytetrafluoroethylene reduce flight resistance and improve ballistic stability; the middle layer is doped with silica nanoparticles, which significantly improves the material strength-density ratio, absorbs impact energy during impact, and avoids excessive deformation; the interlayer high-pressure ball (1.5MPa compressed nitrogen) and the inner core cavity load (OC stimulation powder + fluorescent dye powder) are triggered by impact, and the high-pressure gas explosion drives the powder to spray at high speed from the directional micro-pores, achieving instantaneous release of stimulation and marking.

[0012] (2) The present invention innovatively designs a two-stage high and low pressure system to optimize energy utilization and significantly improve the stability of the initial velocity of the projectile. The launch assembly includes a high-pressure chamber (filled with smokeless gunpowder), a first-stage low-pressure chamber (cavity below the booster element) and a second-stage low-pressure chamber (cavity above the booster element + push plate), and the gas is released in stages through a brass diaphragm. The gunpowder gas first breaks through the first-stage fire transmission hole and enters the first-stage low-pressure chamber to complete the initial expansion buffer; the gas then enters the second-stage low-pressure chamber through the five second-stage fire transmission holes, pushing the booster element to detach and impact the push plate, forming a first push, and the gunpowder gas in the second-stage low-pressure chamber forms a second push on the push plate. The two-stage pressure gradient design (high pressure → first-stage low pressure → second-stage low pressure) reduces recoil and ensures shooting accuracy. The traditional single-stage propulsion system has concentrated gas release and large initial velocity fluctuations; the present invention realizes step-by-step energy conversion through partial pressure expansion, improving initial velocity consistency and energy utilization.

[0013] (3) The axisymmetric integrated structure of the present invention enhances system reliability and assembly accuracy. The projectile assembly (coaxial stacking of two balls), shell components, booster components and push disk are all axisymmetrically designed, and the symmetry axes coincide. The booster component retaining ring is precisely matched with the cartridge groove, and the axial abutment between the push disk and the cartridge support ring achieves the stability of gas sealing and thrust transmission; the overall axisymmetric structure simplifies the assembly process and reduces tolerance sensitivity.

[0014] (4) The present invention uses a high-pressure nitrogen trigger mechanism to improve the efficiency of load release. The interlayer of the projectile is filled with fragile high-pressure balls (containing 1.5MPa compressed nitrogen), and the load of the inner core chamber is separated by radial / axial partitions. During impact, the epidermis and the middle layer compress and crush the high-pressure balls, and the nitrogen is instantly released to form an explosive force, and the inner core partition is simultaneously crushed, so that the stimulation powder and the dyeing powder are fully mixed; the high-pressure gas drives the powder to diffuse in a jet-like manner from the directional micro-pores, with a wide coverage range and strong penetration, avoiding the problem of uneven diffusion caused by insufficient pressure in traditional projectiles. Traditional projectiles rely on impact inertia to release loads, which is inefficient and relies on high initial velocity; the present invention actively drives through built-in high-pressure gas to achieve efficient load release at low pressure and initial velocity.

[0015] (5) The sealing design and material compatibility of the present invention ensure the reliability in complex environments such as storage and use. The barrel mouth and the sealing gasket are sealed with 814 glue, and the push plate and the inner wall of the barrel are sealed with hot melt glue, which ensures the storage stability of the present invention; the shell element is stainless steel, and the push plate is high-temperature resistant plastic. The stainless steel shell is corrosion-resistant and wear-resistant, and is suitable for multiple loading requirements; the high-temperature resistant push plate does not deform under the impact of gas, ensuring the thrust transmission efficiency.

[0016] In summary, the present invention realizes the composite functions of kinetic strike, stimulation dispersal and dyeing marking through five major innovations: multi-layer projectile structure, two-stage high and low pressure system, axisymmetric integrated design, high-pressure nitrogen trigger and sealing process, while optimizing energy utilization, initial velocity stability and environmental adaptability, which is significantly superior to the single function and inefficient design of traditional riot control ammunition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 The schematic diagram of the structure of the multifunctional spherical kinetic energy projectile 1-1 in the present invention is Figure 4 It is a 3 / 4 stereoscopic schematic diagram of the multifunctional spherical kinetic energy projectile 1-1 of the present invention; Figure 5 It is a structural schematic diagram of the cartridge case element 2-1 in the present invention; Figure 6It is a 3 / 4 stereoscopic schematic diagram of the boosting element 2-3 in the present invention; Figure 7 It is a schematic diagram of the position of the secondary fire transfer hole 2-3-6 in the present invention.

[0018] In the figure: 1, projectile assembly, 1-1, multifunctional spherical kinetic projectile, 1-1-1, projectile skin layer, 1-1-2, projectile middle layer, 1-1-3, projectile interlayer, 1-1-3-1, fragile high-pressure ball, 1-1-4, projectile core, 1-1-4-1, radial partition, 1-1-4-2, axial partition, 1-1-4-3, first load chamber, 1-1-4-4, second load chamber, 1-1-4-5, third load chamber Load chamber, 1-1-4-6, fourth load chamber, 1-1-4-7, inner core ball wall, 1-2, sealing pad, 2, firing assembly, 2-1, cartridge case component, 2-1-1, cartridge cylinder, 2-1-2, cartridge cylinder mouth, 2-1-3, cartridge cylinder bottom edge, 2-1-4, cartridge cylinder support ring, 2-1-5, cartridge cylinder groove, 2-1-6, primer hole, 2-1-7, high pressure chamber, 2-1-8, first stage fire hole, 2-1-9, first stage low pressure chamber, 2-1-10, secondary low-pressure chamber, 2-2, propellant charge, 2-2-1, primer, 2-2-2, propellant, 2-3, booster element, 2-3-1, booster element upper cylinder, 2-3-2, booster element lower cylinder, 2-3-3, booster element retaining ring, 2-3-4, booster element upper cavity, 2-3-5, booster element lower cavity, 2-3-6, secondary fire transfer hole, 2-4, push plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 7 The present invention provides a technical solution: a double-ball kinetic energy projectile with a two-stage high and low pressure system, comprising a projectile assembly 1 and a launching assembly 2.

[0021] Combination Figure 2 , Figure 3 and Figure 4The projectile assembly 1 includes a multifunctional spherical kinetic energy projectile 1-1 and a sealing pad 1-2. The multifunctional spherical kinetic energy projectile 1-1 is a multilayer spherical structure that wraps an inner core. The number of the multifunctional spherical kinetic energy projectiles 1-1 is 2, and the 2 multifunctional spherical kinetic energy projectiles 1-1 are coaxially stacked. The multifunctional spherical kinetic energy projectile 1-1 includes a projectile skin layer 1-1-1, a projectile middle layer 1-1-2, a projectile interlayer 1-1-3 and a projectile inner core 1-1-4. The projectile skin layer 1-1-1, the projectile middle layer 1-1-2, the projectile interlayer 1-1-3 and the projectile inner core 1-1-4 are concentrically arranged. The projectile skin layer 1-1-1 is in the multifunctional spherical kinetic energy projectile 1-1. The outermost layer, the projectile skin layer 1-1-1 is made of polytetrafluoroethylene material, the surface of the projectile skin layer 1-1-1 is laser engraved with micron-level grooves, the inner wall of the projectile skin layer 1-1-1 wraps the projectile middle layer 1-1-2, the projectile middle layer 1-1-2 is made of polyurethane foam material, the polyurethane foam material used to make the projectile middle layer 1-1-2 is doped with silicon dioxide nanoparticles to improve its strength-density ratio, the projectile skin layer 1-1-1 and the projectile middle layer 1-1-2 are densely opened with directional micro pores penetrating the wall, the cavity structure between the projectile middle layer 1-1-2 and the projectile inner core 1-1-4 is the projectile interlayer 1-1-3, The projectile interlayer 1-1-3 is filled with a fragile high-pressure ball 1-1-3-1, and the fragile high-pressure ball 1-1-3-1 is filled with compressed nitrogen. The storage pressure of the compressed nitrogen in the fragile high-pressure ball 1-1-3-1 is 1.5Mpa. The projectile inner core 1-1-4 is located at the center of the multifunctional spherical kinetic energy projectile 1-1. The projectile inner core 1-1-4 is made of fragile materials. The projectile inner core 1-1-4 includes a radial partition 1-1-4-1, an axial partition 1-1-4-2, a first load cavity 1-1-4-3, a second load cavity 1-1-4-4, a third load cavity 1-1-4-5, a fourth load cavity 1-1-4-6 and an inner core ball wall 1-1-4- 7. The radial partitions 1-1-4-1 and the axial partitions 1-1-4-2 are arranged crosswise. The radial partitions 1-1-4-1, the axial partitions 1-1-4-2 and the inner core spherical wall 1-1-4-7 divide the first load chamber 1-1-4-3, the second load chamber 1-1-4-4, the third load chamber 1-1-4-5 and the fourth load chamber 1-1-4-6 into four chambers. The first load chamber 1-1-4-3 and the third load chamber 1-1-4-5 are filled with OC stimulation powder, and the second load chamber 1-1-4-4 and the fourth load chamber 1-1-4-6 are filled with fluorescent dye powder. The upper side of the upper multifunctional spherical kinetic energy projectile 1-1 abuts against the sealing pad 1-2. Combination Figure 2 , Figure 5 , Figure 6 and Figure 7The two coaxially stacked multifunctional spherical kinetic projectiles 1-1 are loaded inside the launching assembly 2, and the launching assembly 2 includes a shell component 2-1, a propellant charge 2-2, a booster component 2-3 and a push plate 2-4. The shell component 2-1 is cylindrical and made of stainless steel. The shell component 2-1 includes a cartridge 2-1-1, a cartridge mouth 2-1-2, a cartridge bottom edge 2-1-3, a cartridge support ring 2-1-4, a cartridge groove 2-1-5, a primer hole 2-1-6, a high pressure chamber 2-1-7, a primary fire hole 2-1-8, a primary low pressure chamber 2-1-9 and a secondary low pressure chamber 2-1-10. The cartridge 2-1-1 is a cup-shaped structure with an upper end open and a lower end closed. -1-1 has an opening at the upper end thereof, which is the barrel opening 2-1-2, on which a sealing gasket 1-2 is clamped, and the contact surfaces of the barrel opening 2-1-2 and the sealing gasket 1-2 are fixed with 814 glue to achieve sealing, a barrel bottom edge 2-1-3 is arranged on the protruding side wall surface at the lower end of the barrel 2-1-1, a barrel support ring 2-1-4 is arranged on the protruding inner wall surface in the middle part of the barrel 2-1-1, and the barrel support ring 2-1-4 is in a circular ring structure, a barrel groove 2-1-5 is arranged on the upper end surface of the bottom of the barrel 2-1-1, and the barrel groove 2-1-5 is arranged in a circle with the central axis of the barrel 2-1-1 as the axis, a cylindrical primer hole 2-1-6 is arranged at the axis center of the bottom end surface of the barrel 2-1-1, and the inside and primer of the barrel 2-1-1 are provided with a cylindrical primer hole 2-1-6. A cylindrical high-pressure chamber 2-1-7 is integrated on the upper side of the hole 2-1-6, and a cylindrical first-level fire transfer hole 2-1-8 is opened at the axis of the upper end surface of the high-pressure chamber 2-1-7, and the first-level fire transfer hole 2-1-8 is sealed by a brass diaphragm. The shell element 2-1 is filled with a propellant charge 2-2, and the propellant charge 2-2 includes a primer 2-2-1 and a propellant 2-2-2. The primer 2-2-1 is a mechanical impact primer, and the primer 2-2-1 is riveted inside the primer hole 2-1-6. The propellant 2-2-2 is filled in the high-pressure chamber 2-1-7. The propellant 2-2-2 is bulk smokeless gunpowder. The booster element 2-3 is mounted in the lower cavity of the cartridge 2-1-1, and the booster element 2-3 includes a booster element upper The cylinder 2-3-1, the lower cylinder 2-3-2 of the booster element, the retaining ring 2-3-3 of the booster element, the upper cavity 2-3-4 of the booster element, the lower cavity 2-3-5 of the booster element and the secondary fire transfer hole 2-3-6, the upper cylinder 2-3-1 of the booster element surrounds the upper cavity 2-3-4 of the booster element, the lower cylinder 2-3-2 of the booster element surrounds the lower cavity 2-3-5 of the booster element, after the retaining ring 2-3-3 of the booster element is inserted into the groove 2-1-5 of the cartridge, the side wall of the lower cylinder 2-3-2 of the booster element abuts against the inner wall of the cartridge 2-1-1, the lower end face of the lower cylinder 2-3-2 of the booster element abuts against the upper end face of the bottom of the cartridge 2-1-1, the upper side of the cartridge support ring 2-1-4 abuts against a push plate 2-4, and the push plate 2-4 is cylindrical,The push plate 2-4 is made of high temperature resistant plastic. The push plate 2-4 and the contact surface with the cartridge ring 2-1-4 and the inner wall of the cartridge 2-1-1 are sealed with hot melt adhesive. The cavity inside the lower cavity 2-3-5 of the booster element and outside the high pressure chamber 2-1-7 is the first-level low pressure chamber 2-1-9. The cavity surrounded by the upper cavity 2-3-4 of the booster element and the lower end surface of the push plate 2-4 is the second-level low pressure chamber 2-1-10. The connecting surface of the upper cylinder 2-3-1 of the booster element and the lower cylinder 2-3-2 of the booster element is provided with a second-level fire transfer hole 2-3-6. The number of the second-level fire transfer holes 2-3-6 is 5, and the 5 second-level fire transfer holes 2-3-6 are sealed by a brass diaphragm.

[0022] like Figure 2 As shown, the multifunctional spherical kinetic energy projectile 1-1, sealing pad 1-2, shell element 2-1, booster element 2-3 and push plate 2-4 are all axially symmetrical structures, and the symmetry axes of the multifunctional spherical kinetic energy projectile 1-1, sealing pad 1-2, shell element 2-1, booster element 2-3 and push plate 2-4 coincide.

[0023] In this embodiment, the high-pressure chamber 2-1-7 and the first-level low-pressure chamber 2-1-9 constitute a first-level high-low pressure system, and the first-level low-pressure chamber 2-1-9 and the second-level low-pressure chamber 2-1-10 constitute a second-level high-low pressure system.

[0024] In this embodiment, the primer 2-2-1 is ignited by the impact of the firing pin to ignite the propellant 2-2-2. The combustion of the propellant 2-2-2 generates fuel gas that breaks through the brass diaphragm that seals the primary fire hole 2-1-8. The fuel gas generated by the combustion of the propellant 2-2-2 enters the primary low-pressure chamber 2-1-9 from the primary fire hole 2-1-8. The gunpowder fuel gas breaks through the brass diaphragm that seals the secondary fire hole 2-3-6 and enters the secondary low-pressure chamber 2-1-10. The fuel gas pushes the booster element 2-3 to detach from the shell element 2-1. The booster element 2-3 completes a stable impact on the push plate 2-4. The push plate 2-4 pushes the projectile assembly 1 to break through the sealing pad 1-2 and enter the secondary low-pressure chamber 2-1-10 to continue to apply thrust to the push plate 2-4, thereby increasing the projectile assembly 1. The multifunctional spherical kinetic energy projectile 1-1 has a high exit velocity. After the multifunctional spherical kinetic energy projectile 1-1 hits the target, a kinetic strike is achieved on the living target. The projectile skin layer 1-1-1 and the projectile middle layer 1-1-2 are quickly compressed to absorb part of the impact energy, crushing the high-pressure ball 1-1-3-1 in the projectile interlayer 1-1-3, and then crushing the projectile core 1-1-4. The high-pressure nitrogen stored in the high-pressure ball 1-1-3-1 is quickly released with a blasting sound. The high-pressure nitrogen pushes the OC stimulating powder and the fluorescent dyeing powder in the projectile core 1-1-4 to be sprayed at high speed from the directional micro-pores penetrating the projectile skin layer 1-1-1 and the projectile middle layer 1-1-2, achieving stimulation, dispersal and dyeing marking of the living target.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-ball kinetic energy projectile with a two-stage high and low pressure system, comprising a projectile assembly (1) and a launching assembly (2), characterized in that: The projectile assembly (1) comprises a multifunctional spherical kinetic energy projectile (1-1) and a sealing pad (1-2); the multifunctional spherical kinetic energy projectile (1-1) is in the form of a multilayer spherical structure wrapping an inner core; the number of the multifunctional spherical kinetic energy projectiles (1-1) is two; the two multifunctional spherical kinetic energy projectiles (1-1) are coaxially stacked; the multifunctional spherical kinetic energy projectile (1-1) comprises a projectile surface layer (1-1-1), a projectile intermediate layer (1-2), and a projectile outer layer (1-1-2). 1-2), a projectile interlayer (1-1-3) and a projectile inner core (1-1-4), the projectile skin layer (1-1-1), the projectile middle layer (1-1-2), the projectile interlayer (1-1-3) and the projectile inner core (1-1-4) are arranged concentrically, the projectile skin layer (1-1-1) is located at the outermost layer of the multifunctional spherical kinetic energy projectile (1-1), the projectile skin layer (1-1-1) is made of polytetrafluoroethylene material, and the projectile skin layer (1-1-1) is made of polytetrafluoroethylene material. The surface of the skin layer (1-1-1) is laser engraved with micron-scale grooves. The inner wall of the projectile skin layer (1-1-1) wraps the projectile middle layer (1-1-2). The projectile middle layer (1-1-2) is made of polyurethane foam material. The polyurethane foam material used to make the projectile middle layer (1-1-2) is doped with silicon dioxide nanoparticles to improve its strength-density ratio. The projectile skin layer (1-1-1) and the projectile middle layer (1-1-2) are densely provided with directional micro-pores penetrating the wall. The cavity structure between the projectile middle layer (1-1-2) and the projectile inner core (1-1-4) is the projectile interlayer (1-1-3). The projectile interlayer (1-1-3) is filled with a fragile high-pressure ball (1-1-3-1). The fragile high-pressure ball (1-1-3-1) is filled with compressed nitrogen. The storage pressure of the compressed nitrogen inside the fragile high-pressure ball (1-1-3-1) is 1.5Mpa, the projectile inner core (1-1-4) is located at the center of the multifunctional spherical kinetic energy projectile (1-1), the projectile inner core (1-1-4) is made of fragile material, the projectile inner core (1-1-4) comprises a radial partition (1-1-4-1), an axial partition (1-1-4-2), a first load cavity (1-1-4-3), a second load cavity (1-1-4-4), a third load cavity (1-1-4-5), a fourth load cavity (1-1-4-6) and an inner core spherical wall (1-1-4-7), the radial partition (1-1-4-1) and the axial partition (1-1-4-2) are arranged in a cross manner, and the radial partition The plate (1-1-4-1), the axial partition (1-1-4-2) and the inner core spherical wall (1-1-4-7) divide the first load chamber (1-1-4-3), the second load chamber (1-1-4-4), the third load chamber (1-1-4-5) and the fourth load chamber (1-1-4-6) into four chambers; the first load chamber (1-1-4-3) and the third load chamber (1-1-4-5) are filled with OC stimulating powder; the second load chamber (1-1-4-4) and the fourth load chamber (1-1-4-6) are filled with fluorescent dye powder; the upper side of the upper multifunctional spherical kinetic energy projectile (1-1) abuts against the sealing pad (1-2);. The two coaxially stacked multifunctional spherical kinetic projectiles (1-1) are loaded inside a firing assembly (2). The firing assembly (2) comprises a cartridge case element (2-1), a propellant charge (2-2), a booster element (2-3) and a push plate (2-4). The cartridge case element (2-1) is cylindrical and is made of stainless steel. The cartridge case element (2-1) comprises a cartridge barrel (2-1-1), a cartridge barrel mouth (2-1-2), a cartridge barrel bottom edge (2-1-3), a cartridge barrel support ring (2-1-4), a cartridge barrel groove (2-1-5), a primer hole (2-1-6), a high pressure chamber (2-1-7), a first stage fire transfer hole (2-1-8), a first stage low pressure chamber (2-1-9) and The secondary low-pressure chamber (2-1-10) is a cup-shaped structure with an upper end open and a lower end closed. The upper end opening of the cartridge (2-1-1) is a cartridge opening (2-1-2). A sealing pad (1-2) is clamped on the cartridge opening (2-1-2). The contact surface between the cartridge opening (2-1-2) and the sealing pad (1-2) is fixed by adhesive bonding using 814 glue to achieve sealing. A cartridge bottom edge (2-1-3) is provided on a protruding side wall surface of the lower end of the cartridge (2-1-1). A cartridge support ring (2-1-4) is protrudingly provided on the inner wall surface of the middle part of the cartridge (2-1-1). The cartridge support ring (2-1-4) is an annular structure. A cartridge groove (2-1-3) is provided on the upper end surface of the bottom of the cartridge (2-1-1). 1-5), the cartridge groove (2-1-5) is opened in a circular manner with the central axis of the cartridge (2-1-1) as the axis, a cylindrical primer hole (2-1-6) is opened at the axis center of the bottom end surface of the cartridge (2-1-1), a cylindrical high-pressure chamber (2-1-7) is integrally arranged inside the cartridge (2-1-1) and on the upper side of the primer hole (2-1-6), a cylindrical first-stage fire transfer hole (2-1-8) is opened at the axis center of the upper end surface of the high-pressure chamber (2-1-7), the first-stage fire transfer hole (2-1-8) is sealed by a brass diaphragm, and a propellant charge (2-2) is loaded inside the cartridge case element (2-1), the propellant charge (2-2) includes a primer (2-2-1) and propellant (2-2-2), the primer (2-2-1) is A mechanical impact primer, wherein the primer (2-2-1) is riveted inside a primer hole (2-1-6), the propellant (2-2-2) is loaded inside a high-pressure chamber (2-1-7), the propellant (2-2-2) is bulk smokeless powder, the booster element (2-3) is clamped in a lower cavity of a cartridge (2-1-1), the booster element (2-3) comprises a booster element upper cylinder (2-3-1), a booster element lower cylinder (2-3-2), a booster element clamping ring (2-3-3), a booster element upper cavity (2-3-4), a booster element lower cavity (2-3-5) and a secondary fire transfer hole (2-3-6), the booster element upper cylinder (2-3-1) enclosing the booster element upper cavity (2-3-4),The booster element lower cylinder (2-3-2) encloses a booster element lower cavity (2-3-5); after the booster element snap ring (2-3-3) is snapped into the cartridge groove (2-1-5), the side wall of the booster element lower cylinder (2-3-2) abuts against the inner side wall of the cartridge (2-1-1); the lower end surface of the booster element lower cylinder (2-3-2) abuts against the upper end surface of the bottom of the cartridge (2-1-1); the upper side of the cartridge support ring (2-1-4) abuts against a push plate (2-4); the push plate (2-4) is cylindrical and made of high temperature resistant plastic; the push plate (2-4) is integrally connected with the cartridge support ring (2-1-4) and the cartridge. The contact surfaces of the inner wall of the cylinder (2-1-1) are sealed with hot melt adhesive, the cavity inside the lower cavity (2-3-5) of the booster element and outside the high-pressure chamber (2-1-7) is a first-level low-pressure chamber (2-1-9), the cavity surrounded by the upper cavity (2-3-4) of the booster element and the lower end surface of the push plate (2-4) is a second-level low-pressure chamber (2-1-10), and the connecting surface between the upper cylinder (2-3-1) of the booster element and the lower cylinder (2-3-2) of the booster element is provided with a second-level fire transfer hole (2-3-6), the number of the second-level fire transfer holes (2-3-6) is 5, and the 5 second-level fire transfer holes (2-3-6) are sealed by a brass diaphragm.

2. A double-ball kinetic energy bullet with a two-stage high and low pressure system according to claim 1, characterized in that: The multifunctional spherical kinetic energy projectile (1-1), the sealing pad (1-2), the shell component (2-1), the booster component (2-3) and the push plate (2-4) are all axisymmetric structures, and the axes of symmetry of the multifunctional spherical kinetic energy projectile (1-1), the sealing pad (1-2), the shell component (2-1), the booster component (2-3) and the push plate (2-4) coincide.

3. The double-ball kinetic energy bullet with a two-stage high and low pressure system according to claim 1, characterized in that: The high-pressure chamber (2-1-7) and the first-level low-pressure chamber (2-1-9) constitute a first-level high-low-pressure system, and the first-level low-pressure chamber (2-1-9) and the second-level low-pressure chamber (2-1-10) constitute a second-level high-low-pressure system.

4. The double-ball kinetic energy bullet with a two-stage high and low pressure system according to claim 1, characterized in that: The primer (2-2-1) is struck by the firing pin to ignite the propellant (2-2-2). The propellant (2-2-2) burns to generate combustion gas that breaks through the brass diaphragm that seals the primary fire hole (2-1-8). The combustion gas of the propellant (2-2-2) enters the primary low-pressure chamber (2-1-9) from the primary fire hole (2-1-8). The propellant gas breaks through the brass diaphragm that seals the secondary fire hole (2-3-6) and enters the secondary low-pressure chamber (2-1-10). The gas pushes the booster element (2-3) to separate from the cartridge case element (2-1). The booster element (2-3) completes a stable impact on the push plate (2-4). The push plate (2-4) pushes the projectile assembly (1) to break through the sealing pad (1-2) and enter the secondary low-pressure chamber (2-1-10) to continue to apply pressure to the push plate (2-4). The multifunctional spherical kinetic energy projectile (1-1) has a thrust force, and increases the exit speed of the multifunctional spherical kinetic energy projectile (1-1). After the multifunctional spherical kinetic energy projectile (1-1) hits the target, a kinetic energy strike on a living target is achieved. The projectile surface layer (1-1-1) and the projectile middle layer (1-1-2) are quickly compressed, absorb part of the impact energy, crush the high-pressure ball (1-1-3-1) in the projectile interlayer (1-1-3), and then crush the projectile inner core (1-1-4). The high-pressure nitrogen stored in the high-pressure ball (1-1-3-1) is quickly released, and a bursting sound is emitted. The high-pressure nitrogen pushes the OC stimulating powder and the fluorescent dyeing powder in the projectile inner core (1-1-4) to be sprayed at high speed from the directional micro air holes penetrating the projectile surface layer (1-1-1) and the projectile middle layer (1-1-2), thereby achieving stimulation, dispersal and dyeing marking of the living target.

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