Fire channel area gas guide control double chamber device

Abstract

The present invention relates to the technical field of reducing recoil, and in particular to a dual-chamber device for controlling the area of ​​a fire transmission channel and a gas guide. The device comprises a barrel, a movable dual-chamber, and a rear spray module. The present invention controls the unlocking of the movable block in the channel between the dual-chamber by introducing gunpowder gas from the front of the barrel, thereby increasing the area of ​​the fire transmission channel at the appropriate time, producing a "small at first and small later" effect, so that a small amount of gunpowder gas flows from the rear chamber into the rear chamber in the early stage, while a large amount of gunpowder gas flows from the front chamber into the rear chamber in the later stage, thereby increasing the total mass of gunpowder gas sprayed from the side rear spray channel; at the same time, a section of a smaller cross-sectional area channel is provided in the rear spray pipe, thereby controlling the flow rate of the rear spray gas and extending the total rear spray time, ultimately achieving the purpose of increasing the total impulse of the gas rear spray and significantly reducing the recoil. The present invention can solve the problem that the area of ​​the fire transmission channel in the current dual-chamber low-recoil firing method is immutable and the energy of the gunpowder gas in the front chamber cannot be fully utilized to reduce the recoil.

Description

Technical Field

[0001] The invention relates to the technical field of solid gunpowder launch recoil reduction, in particular to a double-chamber device for controlling the area of ​​a fire transmission channel and a gas guide. 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 propellant gas energy within the rear chamber for back-spray, significantly reducing recoil. However, in current dual-chamber firing methods, to prevent excessive back-chamber propellant gas from flowing into the front chamber during the early stages of firing, the fire channel area is typically small and unchangeable. This results in the front chamber propellant gas being unable to flow into the rear chamber in a timely manner due to the small fire channel area. Consequently, a large amount of front chamber propellant gas is wasted as it flows out of the muzzle with the projectile, failing to fully utilize the propellant gas energy within the rear chamber to reduce recoil impulse, resulting in low propellant gas energy utilization efficiency. Furthermore, to suppress the maximum pressure within the rear chamber, the cross-sectional area of ​​the back-spray channel is typically large and fixed. While this facilitates timely introduction of propellant gas into the rear chamber to mitigate its peak pressure, it also results in a shorter duration of high-pressure back-spray, hindering the improvement of the total back-spray gas impulse. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-recoil firing technology with a controllable fire transfer channel and a channel area that is "small at first and then large", so as to achieve a high energy utilization rate of gunpowder gas, a large total impulse of the after-spray gas, and a double-chamber device for controlling the fire transfer channel area and gas conduction for continuous shooting.

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

[0006] A double-chamber device for controlling the area of ​​a fire transmission channel comprises a barrel, a movable double-chamber and a rear spray module. The movable double-chamber is arranged in the barrel.

[0007] The movable double chamber comprises a front chamber and a rear chamber, wherein the rear chamber is fixed to the rear of the front chamber;

[0008] The front chamber is provided with a movable block for controlling the area of ​​the fire transmission channel; the rear chamber is provided with a partition for blocking the initial fire transmission hole of the movable block and the air guide channel of the rear spray module;

[0009] The movable block is provided with an initial fire transfer hole, which serves as a fire transfer channel for the gas in the rear chamber to flow into the front chamber in the early stage; when the gas pressure in the front chamber increases to a certain value, the movable block separates from the front chamber to increase the area of ​​the fire transfer channel;

[0010] The movable dual chamber further comprises a projectile, which is arranged in the front chamber, and the front chamber and the rear chamber are both filled with solid gunpowder;

[0011] The rear nozzle module is mounted on the barrel and includes a connecting block, a piston, a return spring, and a rear nozzle. The connecting block includes a gas channel that communicates with the interior of the rear chamber. The rear nozzle is inserted into the connecting block and is used to guide high-pressure gas from the rear chamber and eject it rearward from the side of the barrel. The piston is disposed between the gas channel and the rear nozzle and can slide along the gas channel to control the opening and closing of the rear nozzle.

[0012] The return spring is arranged between the piston and the connecting block. When the pressure of the gas guide channel increases to a certain value, the piston slides, so that the rear nozzle is connected to the gas guide channel, and the gunpowder gas is ejected backward.

[0013] Compared with the prior art, the present invention has the following significant advantages:

[0014] (1) The present invention can realize precise control of the area of ​​the fire transmission channel: the movable block is unlocked by introducing high-pressure gas from an appropriate position in front of the barrel to push the clamping shaft to move, thereby realizing the change of the fire transmission channel at the appropriate time, and the channel area produces the effect of "small at first and then large", so that a small amount of gunpowder gas flows from the rear chamber into the rear chamber in the early stage, and a large amount of gunpowder gas flows from the front chamber into the rear chamber in the later stage, thereby increasing the total mass of gunpowder gas sprayed from the side rear spray channel and improving the energy utilization rate of gunpowder gas.

[0015] (2) The present invention utilizes a conical movable block with unequal areas on both sides. When a certain pressure difference is generated between the front and rear chambers, the conical movable block is pushed into the rear chamber to increase the area of ​​the fire transmission channel. This design is relatively simple to achieve a "smaller at first, larger later" fire transmission channel area. However, its disadvantage is that precise control is more difficult.

[0016] (3) The rear jet pipe is designed in three sections. When the gas flows into the second channel, the cross-sectional area of ​​the pipe is reduced to prolong the rear jet time. Finally, the jet is further accelerated by expanding the nozzle, thereby greatly increasing the total impulse of the gunpowder gas when it is ejected to the rear, thereby greatly reducing the recoil and achieving the purpose of micro-recoil launch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the system of the double-chamber device for controlling the area of ​​the fire transmission channel and the gas conduction according to Example 1 of the present invention.

[0018] Figure 2 This is a detailed structural diagram of the initial state of the system of the dual-chamber device for controlling the area of ​​the fire transmission channel and the gas conduction according to Example 1 of the present invention.

[0019] Figure 3 This is a detailed structural diagram of the fire transfer channel area gas guide control dual-chamber device of Example 1 of the present invention when the system rear spray channel is opened.

[0020] Figure 4 It is a schematic diagram of the detailed cross-sectional structure of the front chamber of the dual-chamber device for controlling the area of ​​the fire transfer channel in Example 1 of the present invention.

[0021] Figure 5 It is a schematic diagram of the detailed three-dimensional cross-section of the front chamber of the dual-chamber device for controlling the area of ​​the fire transfer channel in Example 1 of the present invention.

[0022] Figure 6 It is a schematic diagram of the detailed three-dimensional cross-section of the movable block of the dual-chamber device for controlling the area of ​​the fire transmission channel in Example 1 of the present invention.

[0023] Figure 7 Schematic diagram of the detailed structure of a simple dual-chamber dual-chamber device for controlling the area of ​​the fire transfer channel and the air guide according to Example 1 of the present invention.

[0024] Figure 8 It is a schematic cross-sectional view of the detailed structure of a simple front chamber of a system of a dual-chamber device for controlling the area of ​​a fire transfer channel according to Example 1 of the present invention.

[0025] Figure 9 This is a simulation comparison diagram of the recoil impulse of the fire transmission channel area and gas guide control dual-chamber device of Example 1 of the present invention and ordinary weapons. DETAILED DESCRIPTION

[0026] 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.

[0027] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited in any way.

[0028] Example 1:

[0029] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The high initial velocity 35mm sniper grenade launcher adopts a double-chamber device for controlling the area of ​​the fire transmission channel, including a barrel 1, a movable double chamber and a rear spray module. The movable double chamber is arranged in the barrel 1; the movable double chamber includes a front chamber 3 and a rear chamber 11. A movable block 4 is arranged in the front chamber 3 and a movable block hole 304 is opened to control the area of ​​the fire transmission channel. The movable block 4 is installed in the movable block hole 304 and meets the sliding fit. The movable block hole length is 30mm; the movable block 4 is a conical frustum, and the front surface area is smaller than the rear surface area. An initial fire transfer hole 402 is opened, and the initial fire transfer hole 402 is located in the center of the movable block 4, serving as a fire transfer channel for the gas in the rear chamber 11 to flow into the front chamber 3 in the early stage; when the gas pressure in the front chamber 3 increases to a certain value, the movable block 4 is separated from the front chamber 3, increasing the area of ​​the fire transfer channel; the rear chamber 11 is fixed to the rear of the front chamber 3, and a rear chamber gas hole 1101 is opened on the side wall of the rear chamber 11, and a barrel gas hole 103 is opened on the side wall of the barrel 1, and the barrel gas hole 103 and the rear chamber gas hole 1101 are connected, and the rear chamber 11 is provided with a partition 12 blocks the rear chamber air guide hole 1101 and the initial fire transmission hole 402, and the partition 12 is made of flammable material; the movable double chamber also includes a projectile 13, which is arranged in the front chamber 3, and the front chamber 3 and the rear chamber 11 are both filled with solid gunpowder; the rear spray module is arranged on the barrel 1 and communicates with the interior of the rear chamber 11 in the movable double chamber; the rear spray module includes a connecting block 7, a piston 8, a return spring 9 and a rear nozzle 10, and a gas guide channel 701 is opened in the connecting block 7, and the gas guide channel 701 is communicated with the rear chamber air guide hole 1101, and the movable The plug 8 is slidably disposed between the gas channel 701 and the rear nozzle 10. The return spring 9 is disposed between the piston 8 and the connecting block 7. The rear nozzle 10 is inserted into the connecting block 7 and is used to guide the gas in the rear chamber 11 and spray it backward from the side of the barrel 1. The length of the gas pipe 10 must be able to guide the gas to a point more than 350 mm behind the rear shoulder of the weapon; the rear nozzle 10 is sequentially provided with a first channel 1001, a second channel 1002 and an expansion nozzle 1003. The area of ​​the first channel 1001 is larger than that of the second channel 1002.

[0030] The working principle of this embodiment is as follows: when the projectile is fired, the firing pin 15 strikes the solid gunpowder 14 at the bottom of the rear chamber 11, igniting the solid gunpowder 14 in the rear chamber 11. The high-temperature and high-pressure gas in the rear chamber 11 burns the partition 12, the rear chamber air guide hole and the initial fire transfer hole 402 are opened, the rear chamber 11 is connected to the air guide channel 701, and the gunpowder gas in the rear chamber 11 flows into the front chamber 3 through the initial fire transfer hole 402 of the movable block 4 to ignite the gunpowder in the front chamber 3. In the initial stage, the gunpowder gas pressure in the rear chamber 11 is The gunpowder gas in the rear chamber 11 flows into the front chamber 3 continuously, and pushes the projectile 13 forward after overcoming the squeezing pressure of the projectile 13. When the pressure in the rear chamber 11 increases to the point where the pressure acting on the return spring 9 is greater than the elastic force of the return spring 9 acting on the piston 8, the piston 8 moves upward, and the rear nozzle 10 opens. The gunpowder gas in the rear chamber 11 flows into the rear nozzle 10 through the rear chamber gas guide hole 1101, the barrel gas guide hole 103, and the gas guide channel 701 in turn. The gas first flows into the first channel 1001 in the rear nozzle 10. When passing through the second channel 1002, the cross-sectional area of ​​the pipe is reduced, and the gunpowder gas post-spray time is increased, further increasing the gas impulse. Finally, it is ejected from the expansion nozzle 1003 at high speed, and the pressure in the rear chamber 11 is continuously reduced. At the same time, due to the unequal areas on both sides of the conical frustum movable block 4, a certain pressure difference is generated between the front and rear chambers. The movable block 4 is pushed into the rear chamber 11 by the gunpowder gas to increase the area of ​​the fire transmission channel. The gunpowder gas in the front chamber 3 passes through the expansion nozzle 1003. The movable block hole 304 continuously flows into the rear chamber 11, and is eventually ejected rearward at high speed together with the gunpowder gas in the rear chamber 11 to generate a huge forward impulse, thereby offsetting the recoil impulse of the barrel 1; by reasonably designing the double chambers, the initial fire transfer hole 402, the charge of the two chambers, the opening pressure of the piston 8, etc., the flow of gunpowder gas in the double chambers is controlled, so that the sum of the forward gunpowder gas impulse and the impulse of the projectile 13 can be made basically equal to the total impulse of the backward flowing gunpowder gas, thereby achieving the effect of almost completely eliminating recoil.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that a front gas hole 101 and a rear gas hole 102 are respectively opened on the side wall of the barrel 1 from front to back, the gas pipe 2 is connected to the front gas hole 101 and the rear gas hole 102, two card shafts 5 are symmetrically arranged between the front chamber 3 and the movable block 4, which are used to lock the position of the movable block 4. The movable block 4 is a cylindrical structure, and multiple initial fire holes 402 are evenly distributed along the axial direction of the movable block 4 for communicating with the rear chamber 11 and the front chamber 3 in the initial state. A card shaft sliding hole 401 with a through diameter of 5 mm is opened radially in the movable block 4, and an elastic material 6 is provided in the card shaft sliding hole 401. , used to limit the position of the card shaft 5, the elastic material 6 is set between the two card shafts 5, the card shaft 5 is inserted into the card shaft hole 303 and the card shaft sliding hole 401 at the same time and meets the sliding fit, and the barrel 1 is provided with a gas tube 2, and a card shaft hole 303 is opened on the side wall of the movable block hole 304. A flow channel 302 is opened between the gas guide groove 301 and the card shaft hole 303. The gas guide groove 301 and the flow channel 302 are used to introduce the high-pressure gas in the gas guide tube 2 to control the movement of the card shaft 5. After the projectile is fired, the high-pressure gas in the front of the barrel 1 is introduced into the front chamber 3 and pushes the card shaft 5 to move and compress the elastic material 6 to achieve unlocking and combination of the movable block 4. Figure 9 After the high initial velocity 35mm sniper grenade launcher adopts the present invention, it can be seen through simulation calculation that, compared with ordinary weapons, the recoil impulse of the double-chamber diaphragm controlled recoil reduction weapon begins to decrease when the inner ballistic time is 0.510ms, and reaches -0.446N·s at the time of 0.529ms, and then begins to increase. When the inner ballistic time is 0.550ms, the recoil impulse is 0.0598N·s, which can achieve shoulder firing.

[0033] The working principle of this embodiment is: when the projectile is fired, the firing pin 15 hits the solid gunpowder 14 at the bottom of the rear chamber, igniting the solid gunpowder 14 in the rear chamber 11, and the high-temperature and high-pressure gas in the rear chamber 11 burns the partition 12, the rear chamber gas guide hole 1101 and the initial fire transfer hole 402 are opened, the rear chamber 11 is connected to the gas guide channel 701, and the gunpowder gas in the rear chamber 11 flows into the front chamber 3 through the initial fire transfer hole 402 of the movable block 4 to ignite the gunpowder in the front chamber 3. In the initial stage, the gunpowder gas pressure in the rear chamber 11 is greater than the gunpowder gas pressure in the front chamber 3, and the rear chamber 11 fire The powder gas continuously flows into the front chamber 3, and after overcoming the squeezing pressure of the projectile 13, it pushes the projectile 13 forward. When the pressure in the rear chamber 11 increases to the point where the pressure acting on the return spring 9 is greater than the elastic force of the return spring 9 acting on the piston 8, the piston 8 moves upward, and the rear nozzle 10 opens. The powder gas in the rear chamber 11 flows into the rear nozzle 10 through the rear chamber gas guide hole 1101, the barrel gas guide hole 103, and the gas guide channel 701 in turn. The powder gas first flows into the first channel 1001 in the rear nozzle 10, and when passing through the second channel 1002, due to the reduction of the pipe cross-sectional area, the powder gas flows into the first channel 1001. The gunpowder gas is small, and the increase in the after-spray time further increases the impulse of the gas, and finally it is ejected at a high speed from the expansion nozzle 1003, and the pressure in the rear chamber 11 continues to decrease. At the same time, after the projectile 13 passes through the front air guide hole 101, the gunpowder gas passes through the front air guide hole 101 in turn through the air guide pipe 2, the rear air guide hole 102, the air guide groove 301, and the flow channel 302. The pressure in the front chamber 3 increases to the point where the pressure acting on the card shaft 5 causes the elastic material to be continuously compressed until the card shaft 5 completely enters the card shaft sliding hole 401, and the movable block 4 is unlocked and pushed into the rear chamber 11 by the gunpowder gas in the front chamber 3. In order to increase the area of ​​the fire transfer channel, the gunpowder gas in the front chamber continuously flows into the rear chamber 11 through the movable block hole 304, and is finally ejected backward at high speed together with the gunpowder gas in the rear chamber 11 to generate a huge forward impulse, thereby offsetting the recoil impulse of the barrel; by reasonably designing the double chambers, the initial fire transfer hole 402, the amount of powder in the two chambers, the opening pressure of the piston 8, etc., the flow of gunpowder gas in the double chambers is controlled, so that the sum of the forward gunpowder gas impulse and the impulse of the projectile 13 can be made basically equal to the total impulse of the backward flowing gunpowder gas, thereby achieving the effect of almost completely eliminating recoil.

Claims

1. A dual-chamber device for controlling the area of ​​a fire transmission channel and air conduction, characterized in that: It comprises a barrel (1), a movable double chamber and a rear spray module, wherein the movable double chamber is arranged in the barrel (1); The movable double chamber comprises a front chamber (3) and a rear chamber (11), wherein the rear chamber (11) is fixedly mounted on the rear portion of the front chamber (3); A movable block (4) is provided in the front chamber (3) for controlling the area of ​​the fire transmission channel; a partition (12) is provided in the rear chamber (11) for blocking the initial fire transmission hole (402) of the movable block (4) and the air guide channel (701) of the rear spray module; The movable block (4) is provided with an initial fire transfer hole (402) serving as a fire transfer passage for the gas from the rear chamber (11) to flow into the front chamber (3); when the gas pressure in the front chamber (3) increases to a certain value, the movable block (4) is separated from the front chamber (3) to increase the area of ​​the fire transfer passage; The movable double chamber further comprises a projectile (13), the projectile (13) being arranged in the front chamber (3), and the front chamber (3) and the rear chamber (11) are both filled with solid gunpowder (14); The rear spray module is arranged on the barrel (1), and comprises a connecting block (7), a piston (8), a return spring (9) and a rear spray pipe (10); a gas guide channel (701) is provided in the connecting block (7), and the gas guide channel (701) is communicated with the interior of the rear chamber (11); the rear spray pipe (10) is inserted into the connecting block (7) and is used to guide the high-pressure gas in the rear chamber (11) and spray it backward from the side of the barrel (1); the piston (8) is arranged between the gas guide channel (701) and the rear spray pipe (10) and can slide along the gas guide channel (701) to control the opening and closing of the rear spray pipe (10); The return spring (9) is arranged between the piston (8) and the connecting block (7). When the pressure of the air guide channel (701) increases to a certain value, the piston slides, so that the rear nozzle (10) is connected to the air guide channel (701), and the gunpowder gas is ejected backward.

2. The double-chamber device for controlling the area of ​​the fire transmission channel according to claim 1, characterized in that: The movable block (4) is a conical cone, and the area of ​​the front end surface is smaller than the area of ​​the rear end surface. The initial fire transmission hole (402) is located at the center of the movable block (4).

3. The double-chamber device for controlling the area of ​​the fire transmission channel according to claim 1, characterized in that: It also includes an air guide tube (2), a clamping shaft (5), and an elastic material (6); Two clamping shafts (5) are symmetrically arranged between the front chamber (3) and the movable block (4) for locking the position of the movable block (4); an elastic material (6) is provided between the two clamping shafts (5), and the elastic material (6) is located inside the movable block (4) for limiting the position of the clamping shaft (5); The barrel (1) is provided with a gas guide tube (2) for introducing high-pressure gas in the front part of the barrel (1) into the front chamber (3) after the projectile is fired, thereby pushing the clamping shaft (5) to move and compressing the elastic material (6) to unlock the movable block (4).

4. The double-chamber device for controlling the area of ​​the fire transmission channel according to claim 1, characterized in that: The movable block (4) is a cylindrical structure, and a plurality of initial fire transmission holes (402) are evenly distributed along the axial direction of the movable block (4).

5. The double-chamber device for controlling the area of ​​the fire transmission channel according to claim 1, characterized in that: A first channel (1001), a second channel (1002) and an expansion nozzle (1003) are sequentially provided in the rear nozzle (10), and the area of ​​the first channel (1001) is larger than the area of ​​the second channel (1002).

6. The double-chamber device for controlling the area of ​​the fire transmission channel according to claim 3, characterized in that: The side wall of the barrel (1) is provided with a front air guide hole (101) and a rear air guide hole (102) from front to rear, respectively, and the air guide pipe (2) is communicated with the front air guide hole (101) and the rear air guide hole (102); An annular air guide groove (301) is provided on the outer side of the front chamber (3), and the air guide groove (301) is communicated with the rear air guide hole (102); a movable block hole (304) is provided in the front chamber (3), and the movable block (4) is installed in the movable block hole (304) and meets the sliding fit; a clamping shaft hole (303) is provided on the side wall of the movable block hole (304), and a flow channel (302) is provided between the air guide groove (301) and the clamping shaft hole (303).

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