Dual chamber post injection air guided self-locking control and water-air mixing post injection device

Abstract

The present application relates to the technical field of micro-recoil launching, and particularly relates to a double-chamber rear ejection passage air guide self-locking control and water-gas mixed rear ejection device. The device comprises a launching cylinder, a control body, a piston, a return spring, a lock pin, a control spring, a rear ejection pipeline, a nozzle clamp, an air guide pipe, a valve, a valve spring and a double-chamber structure. The present application adopts the method of air guide control lock pin self-locking, and the lock pin is moved by high-pressure gas to serve as a piston starting switch, and the lock pin is locked by the piston after being moved to the position, so that the piston cannot be returned during the continuous rear ejection process of the gas. At the same time, a water tank is arranged outside the rear ejection passage, and the water tank is in full contact with the contraction section of the rear ejection passage through a water guide hole to generate a water-gas mixture with high density for rear ejection, so that the rear ejection impulse of the launcher is greatly improved, and the purpose of greatly reducing the recoil force to realize micro-recoil launching is achieved. The present application can solve the problems that the rear ejection passage is difficult to be continuously conducted and the rear ejection impulse of the gas is small in the current double-chamber launching method.

Description

Technical Field

[0001] The invention belongs to the technical field of solid propellant launch recoil reduction, in particular to a double-chamber post-spray channel gas-guiding self-locking control and water-gas mixing post-spray device. Background Art

[0002] When firing conventional barreled weapons, the gunpowder gases propel the projectile, generating a significant recoil impulse and force. Excessive recoil can render high-powered infantry-carried weapons unusable for shoulder-fired fire. It can also cause vehicles and helicopters carrying small-caliber artillery to violently bounce or vibrate, compromising firing accuracy and severely restricting the loading of high-powered conventional weapons onto advanced vehicles such as aircraft, ships, and light wheeled vehicles. Therefore, reducing recoil in barreled weapons directly impacts the performance of conventional weapons and represents a key bottleneck in balancing the balance between firepower and maneuverability.

[0003] The dual-chamber firing structure is a relatively new recoil-reducing mechanism that directly utilizes the energy of the propellant gases within the rear chamber for back-blasting, significantly reducing recoil. However, in current dual-chamber technology, the valve in the constant-pressure opening mechanism must open at relatively low pressure, which prevents the solid propellant from fully burning and inefficiently utilizes the propellant's energy. If the valve is set to open at a higher pressure, the pressure required to return to the chamber will also be higher, causing the back-blast channel to close prematurely. This will result in a large amount of propellant gases remaining in the chamber, preventing the continued back-blasting to reduce recoil. Furthermore, the current back-blasting process solely utilizes propellant gases, without involving other denser media, which also limits the back-blast impulse. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-recoil launch technology with controllable opening pressure of the post-jet valve, which can realize high-pressure opening and low-pressure recovery, and add water-gas mixing into the post-jet channel to increase the post-jet impulse, so as to realize continuous post-jet throughout the launch process, increase the density of post-jet material, and have a reliable control device, a dual-chamber post-jet channel gas self-locking control and a water-gas mixing post-jet device.

[0005] The technical solutions for achieving the purpose of the present invention are:

[0006] A dual-chamber rear-jet channel gas-guided self-locking control and water-gas mixed rear-jet device, comprising a launch tube, a control body, a piston, a return spring, a locking pin, a control spring, a rear-jet pipe, a nozzle clamp, a gas guide pipe, a valve, a valve spring, and a dual-chamber structure. The control body is fixedly mounted on the launch tube, and the dual-chamber structure is disposed within the launch tube. A main gas chamber is disposed within the control body, and the main gas chamber is communicated with the interior of the dual-chamber structure for introducing the gas generated by the dual-chamber structure. A partition is disposed within the dual-chamber structure for blocking the main gas chamber.

[0007] The rear spray pipe is inserted and fixed in the control body, and the piston is arranged in the control body to control the opening and closing of the rear spray pipe;

[0008] The lock pin is provided between the control body and the piston as a movement switch of the piston. An air guide channel is provided between the lock pin and the main air chamber for introducing gas to push the lock pin to move, thereby unlocking the piston. The control body is provided with the return spring for resetting the piston. The control body is provided with the control spring for adjusting the starting pressure of the lock pin.

[0009] A plurality of water guide holes are provided on the side wall of the rear spray pipe, and a nozzle clamp and a water tank are provided on the periphery of the rear spray pipe, and the nozzle clamp covers the water guide holes; a valve is provided on the pipe between the nozzle clamp and the water tank for controlling the opening and closing between the nozzle clamp and the water tank; an air guide pipe is provided between the main air chamber and the valve for introducing gas to push the valve to move, and the valve spring is provided in the nozzle clamp for resetting the valve.

[0010] Compared with the prior art, the present invention has the following significant advantages:

[0011] (1) The present invention uses a gas-guided control lock pin to self-lock. High-pressure gas is used to push the lock pin to move as a piston start switch. After the lock pin moves into position, it is locked by the piston, achieving a self-locking effect. This achieves the effect of high-pressure opening and low-pressure return of the post-spray valve, continuous post-spray of high-pressure gunpowder gas, and controllable valve opening pressure. This achieves the purpose of full combustion of gunpowder, continuous post-spray, and full utilization of gunpowder gas energy to reduce recoil.

[0012] (2) A new type of water-gas mixing control device is proposed. A water tank is set outside the rear spray channel. The water tank is in full contact with the contraction section of the rear spray channel through the water guide hole to produce a water-gas mixture with a higher density. Finally, the spray is further accelerated through the expansion nozzle, thereby greatly improving the rear spray impulse of the launcher and achieving the purpose of greatly reducing the recoil and realizing micro-recoil launch.

[0013] (3) The valve, lock pin and water-gas mixing control device in the present invention can be automatically reset and reused, thereby enabling continuous shooting.

[0014] (4) The maximum pressure in the weapon chamber does not increase, the weapon's existing ammunition does not need to be changed, and the weapon's maneuverability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the system of the dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to an embodiment of the present invention.

[0016] Figure 2It is a detailed structural diagram of the system initial state of the dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to an embodiment of the present invention.

[0017] Figure 3 It is a detailed structural diagram of the dual-chamber rear-spray channel air guide self-locking control and water-gas mixing rear-spray device of an embodiment of the present invention when the rear-spray channel of the system is opened.

[0018] Figure 4 It is a detailed structural diagram of the water-gas mixing device of the system of the dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to an embodiment of the present invention.

[0019] Figure 5 It is a detailed structural diagram of the control body of the system of the dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to an embodiment of the present invention.

[0020] Figure 6 It is a detailed structural diagram of the nozzle clamp of the system of the dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited in any way.

[0023] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6The invention discloses a high-initial-velocity 25mm sniper grenade launcher with a dual-chamber rear-jet channel gas-guiding self-locking control and a water-gas mixing rear-jet device, comprising a launch tube 1, a control body 2, a piston 3, a return spring 4, a locking pin 5, a control spring 6, a rear-jet pipe 7, a nozzle clamp 8, a gas pipe 9, a valve 10, a valve spring 11, and a dual-chamber structure. The control body 2 is fixed to the launch tube 1, and the dual-chamber structure is arranged in the launch tube 1. Solid fuel is arranged in the dual-chamber structure for generating high-pressure gas. The dual-chamber structure includes a projectile 13, a front chamber 14, a partition 15, and a rear chamber 16. Both the front chamber 14 and the rear chamber 16 are filled with solid fuel. A connecting hole 1401 is opened between the front chamber 14 and the rear chamber 16, and a rear-chamber gas hole 160 is opened on the side wall of the rear chamber 16. 1. A launch tube gas guide hole 101 is opened on the side wall of the launch tube 1, and a main air chamber 201 is set in the control body 2. The main air chamber 201, the launch tube gas guide hole 101 and the rear chamber gas guide hole 1601 are connected. The rear chamber 16 is provided with a partition 15 to block the rear chamber gas guide hole 1601 and the communicating hole 1401. The partition 15 is made of flammable material. A piston cavity hole 203, a return spring hole 204, a lock pin hole 205, a rear nozzle pipe hole 206, a gas guide pipe hole 207 and a launch tube hole 208 are set in the control body 2. The diameter of the piston cavity hole 203 is 10mm. The piston cavity hole 203 is connected with the main air chamber 201 and the return spring hole 204. The aperture of the piston cavity hole 203 is larger than the aperture of the return spring hole 204. The lock pin hole 205 is opened at the piston cavity hole 20 3, the air guide channel 202 is opened between the main air chamber 201 and the lock pin hole 205, the diameter of the lock pin hole 205 is 3mm, the aperture of the lock pin hole 205 is larger than the aperture of the air guide channel 202, the rear nozzle pipe hole 206 is opened on the side wall of the piston cavity hole 203, the air guide pipe hole 207 is opened on the side wall of the main air chamber 201, the piston 3 is inserted in the piston cavity hole 203 and meets the sliding fit, the return spring 4 is arranged between the bottom surface of the piston 3 and the return spring hole 204, the lock pin 5 is inserted in the lock pin hole 205 and meets the sliding fit, the control spring 6 is arranged between the lock pin 5 and the bottom surface of the lock pin hole 205, the rear nozzle pipe 7 is inserted and fixed in the rear nozzle pipe hole 206, and the length of the rear nozzle pipe 7 must be able to guide the gas to the rear of the shoulder of the weapon. At 300mm, the air guide tube 9 is inserted and fixed in the air guide tube hole 207, the launch tube 1 is inserted and fixed in the launch tube hole 208, the piston 3 is arranged in the control body 2, and the high-pressure gas in the main air chamber 201 can push the piston 3 to move and control the opening and closing of the channel between the main air chamber 201 and the rear nozzle pipe 7. The lock pin 5 is arranged between the control body 2 and the piston 3 as a movement switch of the piston 3. A piston lock pin hole 301 is opened on the piston 3. The aperture of the piston lock pin hole 301 is equal to the aperture of the lock pin hole 205. In the initial state, the lock pin 5 is inserted in the piston lock pin hole 301 and the lock pin hole 205 at the same time. The distance between the bottom surface of the piston 3 and the axis of the piston lock pin hole 301 is 30mm, which is equal to the distance between the axis of the lock pin hole 205 and the bottom surface of the piston cavity hole 203.An air guide channel 202 is provided between the lock pin 5 and the main air chamber 201 for introducing high-pressure gas to push the lock pin 5 to move, a return spring 4 is provided in the control body 2 for resetting the piston 3, a control spring 6 is provided in the control body 2 for adjusting the starting pressure of the lock pin 5, a contraction channel 701 is provided on the rear spray pipe 7, and a water guide hole 702 is provided on the side wall of the contraction channel 701. The water guide holes 702 are evenly distributed along the axial direction and circumferential direction of the side wall of the contraction channel 701, a nozzle clamp 8 and a water tank 12 are provided on the periphery of the contraction channel 701, the rear spray pipe 7 and the nozzle clamp 8 form a water storage chamber 801, an expansion nozzle 703 is provided at the end of the rear spray pipe 7, a water inlet hole 802 is provided between the nozzle clamp 8 and the water tank 12, a valve 10 is provided in the nozzle clamp 8 for controlling the opening and closing of the channel between the nozzle clamp 8 and the water tank 12, a valve hole 803 and a valve spring hole 804 are provided in the nozzle clamp 8, and the diameter of the valve hole 803 is 3m m, the aperture of the valve hole 803 is larger than the aperture of the valve spring hole 804, the valve 10 is inserted into the valve hole 803 and meets the sliding fit, the valve spring 11 is set between the valve 10 and the bottom surface of the valve spring hole 804, the valve 10 is provided with a valve air guide hole 1001, the aperture of the valve air guide hole 1001 is equal to the aperture of the water inlet hole 802, which is 4mm. In the initial state, the valve 10 blocks the water inlet hole 802. When the end face of the valve 10 is aligned with the valve When the bottom surfaces of hole 803 overlap, valve air guide hole 1001 aligns and connects with water inlet hole 802. A valve spring 11 is provided within nozzle clamp 8 to reset valve 10. After adopting the present invention, simulation calculations show that the projectile's initial velocity reaches 750 m / s in a high-velocity 25mm sniper grenade launcher, which is 3.1 times the initial velocity of the US MK47 40mm grenade launcher (240 m / s). The recoil is relatively small, enabling shoulder-fired launch.

[0024] The working principle of the present invention is as follows: when the projectile 13 is launched, the firing pin 18 strikes the fuel primer at the bottom of the rear chamber 16, igniting the solid fuel 17 in the rear chamber 16, and the high-temperature and high-pressure gas in the rear chamber 16 burns the partition 15. The rear chamber gas guide hole 1601 and the connecting hole 1401 are opened, and the rear chamber 16 is connected with the main gas chamber 201 in the control body 2. The gas in the rear chamber 16 flows into the front chamber 14 through the connecting hole 1401 to ignite the solid fuel 16 in the front chamber 14. In the initial stage, the fuel gas pressure in the rear chamber 16 is greater than the fuel gas pressure in the front chamber 14. The gas in the rear chamber 16 continuously flows into the front chamber 14, and after overcoming the squeezing pressure of the projectile 13, it pushes the projectile 13 forward. The gas in the main gas chamber 201 The gas flows into the air guide channel 202 and the air guide pipe 9 respectively. When the pressure of the rear chamber 16 increases to the point where the pressure acting on the lock pin 5 is greater than the elastic force of the control spring 6 acting on the lock pin 5, the high-pressure gas pushes the lock pin 5 to the right along the lock pin hole 205. When the lock pin 5 completely slides away from the piston lock pin hole 205, since the rigidity of the designed return spring 4 is much smaller than that of the control spring 6, the pressure of the rear chamber 16 acting on the piston 3 is much greater than the elastic force of the return spring 4 acting on the piston. The high-pressure gas pushes the piston 3 to move upward along the piston cavity hole 203 until the end face of the piston 3 coincides with the upper end face of the piston cavity hole 203 and then stops. The gas in the main air chamber 201 flows into the rear injection pipe 7 through the rear injection pipe hole 206, and the piston 3 blocks the lock pin hole 205, thereby locking The pin 5 is locked, playing a role similar to self-locking. At the same time, when the pressure in the rear chamber 16 increases to the point where the pressure acting on the valve 10 is greater than the elastic force of the valve spring 11 acting on the valve 10, the valve 10 moves to the right along the valve hole 803 until the end face of the valve 10 coincides with the bottom face of the valve hole 803 and stops. The valve air guide hole 1001 is aligned and connected with the water inlet hole 802. The water in the water storage tank 12 flows into the water storage chamber 801 of the nozzle clamp 8 through the water inlet hole 802. The fuel gas in the rear chamber 16 is compressed when passing through the contraction channel 701 of the rear nozzle pipe 7. The water in the water storage chamber 801 enters the water guide holes 702 on the circumferential side wall of the contraction channel 701 and is fully mixed with the fuel gas to produce a water-gas mixture with a higher density. The water-gas mixture is finally further accelerated and ejected through the expansion nozzle 703, and the pressure in the rear chamber 16 continues to decrease. When the pressure in the rear chamber 16 is lower than the pressure at the bottom of the front chamber 14, the gas in the front chamber 14 begins to flow into the rear chamber 16 through the connecting hole 1401, and is finally ejected backward at high speed together with the gas in the rear chamber 16, generating a huge forward impulse, thereby offsetting the recoil impulse of the launcher. When the pressure in the chamber drops, the pressure acting on the bottom of the piston 3 and the valve 10 is less than the elastic force of the return spring 4 and the valve spring 11, the piston 3 moves down and resets, and the valve 10 moves to the left. When the bottom surface of the piston 3 coincides with the bottom surface of the piston cavity hole 203, the piston lock pin hole 301 is aligned and connected with the lock pin hole 205, and the lock pin 5 moves to the left to its initial state.

Claims

1. A dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device, characterized by: The invention comprises a launch tube (1), a control body (2), a piston (3), a return spring (4), a lock pin (5), a control spring (6), a rear nozzle pipe (7), a nozzle hoop (8), an air guide pipe (9), a valve (10), a valve spring (11) and a double-chamber structure, wherein the control body (2) is fixedly mounted on the launch tube (1), the double-chamber structure is arranged in the launch tube (1), a main air chamber (201) is arranged in the control body (2), and the main air chamber (201) is communicated with the interior of the double-chamber structure for introducing the combustion gas generated by the double-chamber structure; a partition is arranged in the double-chamber structure for blocking the main air chamber (201); The rear spray pipe (7) is inserted and fixed in the control body (2), and the piston (3) is arranged in the control body (2) to control the opening and closing of the rear spray pipe (7); The lock pin (5) is arranged between the control body (2) and the piston (3) and serves as a movement switch for the piston (3); an air guide channel (202) is provided between the lock pin (5) and the main air chamber (201) for introducing gas to push the lock pin (5) to move, thereby unlocking the piston (3); the return spring (4) is provided in the control body (2) for resetting the piston (3); and a control spring (6) is provided in the control body (2) for adjusting the starting pressure of the lock pin (5); A plurality of water guide holes (702) are provided on the side wall of the rear spray pipe (7); a nozzle hoop (8) and a water tank (12) are provided on the periphery of the rear spray pipe (7); the nozzle hoop (8) covers the water guide holes (702); a valve (10) is provided on the pipe between the nozzle hoop (8) and the water tank (12) for controlling the opening and closing between the nozzle hoop (8) and the water tank (12); an air guide pipe (9) is provided between the main air chamber (201) and the valve (10) for introducing gas to push the valve (10) to move; and a valve spring (11) is provided in the nozzle hoop (8) for resetting the valve (10).

2. The dual-chamber post-spray channel air-guiding self-locking control and water-gas mixing post-spray device according to claim 1, characterized in that: The dual-chamber structure comprises a projectile (13), a front chamber (14), a partition (15) and a rear chamber (16); the front chamber (14) and the rear chamber (16) are both filled with solid fuel (17); a connecting hole (1401) is provided between the front chamber (14) and the rear chamber (16); a rear chamber air guide hole (1601) is provided on the side wall of the rear chamber (16); a launch tube air guide hole (101) is provided on the side wall of the launch tube (1); the main air chamber (201), the launch tube air guide hole (101) and the rear chamber air guide hole (1601) are connected; the rear chamber (16) is provided with a partition (15) to block the rear chamber air guide hole (1601) and the connecting hole (1401).

3. The dual-chamber post-spray channel air-guiding self-locking control and water-gas mixing post-spray device according to claim 1, characterized in that: The control body (2) is provided with a piston cavity hole (203), a return spring hole (204), a lock pin hole (205), a rear nozzle pipe hole (206), a gas pipe hole (207) and a launch tube hole (208); the piston cavity hole (203) is communicated with the main air chamber (201) and the return spring hole (204); the aperture of the piston cavity hole (203) is larger than the aperture of the return spring hole (204); the lock pin hole (205) is opened on the side wall of the piston cavity hole (203); the gas guide channel (202) is opened between the main air chamber (201) and the lock pin hole (205); the aperture of the lock pin hole (205) is larger than the aperture of the gas guide channel (202); the rear nozzle pipe hole (206) is opened. On the side wall of the piston cavity (203); the air guide pipe hole (207) is opened on the side wall of the main air chamber (201); the piston (3) is inserted into the piston cavity (203) and meets the sliding fit; the return spring (4) is arranged between the piston (3) and the bottom surface of the return spring hole (204); the lock pin (5) is inserted into the lock pin hole (205) and meets the sliding fit; the control spring (6) is arranged between the lock pin (5) and the bottom surface of the lock pin hole (205); the rear nozzle pipe (7) is inserted and fixed in the rear nozzle pipe hole (206); the air guide pipe (9) is inserted and fixed in the air guide pipe hole (207), and the launch tube (1) is inserted and fixed in the launch tube hole (208).

4. The dual-chamber post-spray channel air-guiding self-locking control and water-gas mixing post-spray device according to claim 3, characterized in that: The piston (3) is provided with a piston lock pin hole (301), the diameter of the piston lock pin hole (301) is equal to the diameter of the lock pin hole (205), and in an initial state, the lock pin (5) is simultaneously inserted into the piston lock pin hole (301) and the lock pin hole (205), and the distance between the bottom surface of the piston (3) and the axis of the piston lock pin hole (301) is equal to the distance between the axis of the lock pin hole (205) and the bottom surface of the piston cavity hole (203).

5. The dual-chamber post-spray channel air guide self-locking control and water-gas mixing post-spray device according to claim 1, characterized in that: The water guide hole (702) is provided on the contraction channel (701) of the rear spray pipe (7).

6. The dual-chamber post-spray channel air-guiding self-locking control and water-gas mixing post-spray device according to claim 5, characterized in that: The water guide holes (702) are evenly distributed along the axial direction and circumferential direction of the side wall of the contraction channel (701); the rear spray pipe (7) and the nozzle hoop (8) form a water storage chamber (801); and an expansion nozzle (703) is provided at the end of the rear spray pipe (7).

7. The dual-chamber post-spray channel air-guiding self-locking control and water-gas mixing post-spray device according to claim 1, characterized in that: The nozzle clamp (8) is provided with a valve hole (803) and a valve spring hole (804), the aperture of the valve hole (803) is larger than the aperture of the valve spring hole (804), the valve (10) is inserted into the valve hole (803) and meets the sliding fit, the valve spring (11) is provided between the valve (10) and the bottom surface of the valve spring hole (804), and the valve (10) is provided with a valve air guide hole (100 1); a water inlet hole (802) is opened between the nozzle clamp (8) and the water tank (12); the aperture of the valve air guide hole (1001) is equal to the aperture of the water inlet hole (802); in the initial state, the valve (10) blocks the water inlet hole (802); when the end surface of the valve (10) coincides with the bottom surface of the valve hole (803), the valve air guide hole (1001) and the water inlet hole (802) are aligned and connected.

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