Novel fire extinguishing bomb and use method thereof

Abstract

The invention relates to a novel fire extinguishing bomb and a using method thereof, and belongs to the technical field of fire fighting equipment. Comprising a cartridge case, a baffle is connected to the top end of the cartridge case, a cartridge top is connected to the top end of the baffle, a plurality of parallel longitudinal notch grooves, a plurality of parallel transverse notch grooves, a cartridge band groove and four empennage grooves are formed in the outer wall of the cartridge case, a cartridge band is placed in the cartridge band groove, and an open empennage is located in the empennage grooves. A position sensor is connected to the middle of the bottom of the cartridge top, a cartridge bottom is connected to the bottom end of the cartridge case, the explosion cavity is connected with the middle of the baffle, an electronic detonator is placed in the explosion cavity, the explosion cavity is filled with explosives, the periphery of the electronic detonator is filled with the explosives, and the cartridge case is filled with a dry powder extinguishing agent. Through the design of the longitudinal notch grooves and the transverse notch grooves, the size and the shape of shell fragments can be controlled, and the internal dry powder extinguishing agent can be scattered more evenly and fully; due to the design of the open empennage, the stability of the novel fire extinguishing bomb in the flying process is improved, and long-distance accurate fire extinguishing can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting equipment, and in particular to a novel fire extinguishing bomb and a use method thereof. Background Art

[0002] In order to speed up or facilitate fire extinguishing, fire extinguishing bombs are used in some scenarios. The fire extinguishing principle of fire extinguishing bombs is: the fire extinguishing agent inside the fire extinguishing bomb is thrown into the fire scene under the action of driving force. Existing fire extinguishing bombs have the following problems:

[0003] (1) The fire extinguishing agent is spread through the internal explosives. The explosion shock wave directly acts on the shell. This method causes the shell of the fire extinguishing bomb to produce fragments of random size and shape when it explodes, resulting in unstable coverage and effect of the fire extinguishing agent, and the fire extinguishing agent cannot be spread evenly. In addition, larger irregular fragments have higher speeds, which also increases the risk of injury to personnel at the fire scene.

[0004] (2) Existing fire-extinguishing bombs have poor stability during flight and are severely affected by the environment. They are prone to trajectory deviation and cannot achieve long-distance and accurate fire extinguishing. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a new type of fire extinguishing bomb and its use method. The technical solution of the present invention is as follows:

[0006] The invention provides a novel fire extinguishing bomb, which comprises a shell, a baffle is connected to the top of the shell, a bomb top is connected to the top of the baffle, a plurality of mutually parallel longitudinal grooves, a plurality of mutually parallel transverse grooves, a band groove and four tail grooves are provided on the outer wall of the shell, the band groove and the four tail grooves are located at the bottom of the shell, the four tail grooves are evenly distributed along the circumference of the bottom of the shell, a band is placed in the band groove, the inner diameter of the band matches the outer diameter of the band groove, a first protrusion is connected to the position where the tail groove on the shell is located, an open tail is located in the tail groove, and the open tail The wing includes a tail base and a wing piece, a first protrusion is connected with a rotating shaft, the first protrusion is also connected with the tail base, the wing piece is rotatably connected with the rotating shaft, the top of the wing piece is higher than the elastic belt so that the wing piece is limited by the elastic belt, the tail base is L-shaped, the side of the vertical part and the top surface of the horizontal part of the tail base are connected with connecting rods, the two connecting rods are connected with tension springs, the side of the horizontal part of the tail base is connected with a buckle, the bottom end of the wing piece is provided with a slot, the buckle can be inserted into the slot, the middle of the top of the baffle is connected with a position sensor, the inside of the shell is connected with a fire extinguishing drive device, and the bottom of the shell is connected with a shell bottom;

[0007] The fire extinguishing drive device includes an explosion cavity, which is connected to the middle part of the baffle, an electronic detonator is placed in the explosion cavity, the explosion cavity is filled with explosives, the explosives are filled around the electronic detonator, the shell is filled with dry powder fire extinguishing agent and the dry powder fire extinguishing agent is located outside the explosion cavity, and the position sensor and the electronic detonator are electrically connected to the controller.

[0008] Optionally, the spring top is a truncated cone structure.

[0009] Optionally, the longitudinal groove and the transverse groove are both V-shaped grooves.

[0010] Optionally, the materials of the missile base and the open tail fin are both aluminum alloy.

[0011] Optionally, the rotating shaft includes an inner ring and an outer ring, the first protrusion is connected to the inner ring of the rotating shaft, the outer ring of the rotating shaft is provided with a groove, the wing is connected to the second protrusion, and the second protrusion is stuck in the groove of the rotating shaft.

[0012] Optionally, a battery is connected to the baffle, the battery is connected to an electronic detonator via a wire, the wire is connected to an electromagnetic valve, and the electromagnetic valve is electrically connected to a controller.

[0013] Optionally, the materials of the bullet top, baffle and shell are all ABS plastic, and the material of the bullet belt is plastic.

[0014] The present invention also provides a method for using a novel fire extinguishing bomb, which uses the novel fire extinguishing bomb and comprises:

[0015] S1, during the barrel movement stage of the projectile launcher, the fins of the open tail fin are connected to the tail fin grooves through the rotating shaft, and the fins are limited by the belt;

[0016] S2, when the new type of fire extinguisher is ejected from the muzzle of the artillery shell launching device, the band expands so that a gap is formed between the band and the band groove, and the launch gas in the gap suddenly expands to instantly destroy the band, and the band flies away from the shell under the action of the launch gas pressure; when the band flies away, the constraint on the open tail fin disappears, and under the action of the tension spring, the wing rotates with the shaft, and when the slot rotates to the position of the buckle, the slot and the buckle cooperate to fix the open tail fin;

[0017] S3, the position sensor monitors the position of the new fire extinguishing bomb in real time and sends the position data to the controller. When the controller determines that the new fire extinguishing bomb has reached the specified position based on the position data, the controller transmits the detonation signal to the electronic detonator, and the electronic detonator detonates the explosive. The shock wave generated by the explosion is transmitted to the shell through the dry powder fire extinguishing agent. The shell is exploded and ruptured along the longitudinal and transverse grooves on the outer wall of the shell under the action of the shock wave, and the dry powder fire extinguishing agent is scattered outward.

[0018] All the above optional technical solutions can be combined arbitrarily, and the present invention does not provide detailed descriptions of the structures after the combinations.

[0019] By means of the above scheme, the beneficial effects of the present invention are as follows:

[0020] By providing longitudinal and transverse grooves on the outer wall of the shell, the shell can explode and rupture along the longitudinal and transverse grooves when it is affected by the gunpowder shock wave, thereby controlling the size and shape of the shell fragments, allowing the internal dry powder fire extinguishing agent to be more evenly and fully scattered, thereby improving the fire extinguishing efficiency of the new fire extinguishing bomb; at the same time, the controllability of the shell rupture fragments of the new fire extinguishing bomb is enhanced, reducing the risk of shell fragments causing harm to the environment and personnel around the fire scene, making the action process of the new fire extinguishing bomb safer. By setting up an open tail wing, the stability of the new fire extinguishing bomb during flight is improved, and it can achieve long-distance accurate arrival at the fire scene and carry out fire extinguishing work, quickly achieving the purpose of effectively controlling the fire, thereby reducing the casualties rate in the fire.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The diagram is a structural diagram of a novel fire extinguishing bomb provided by the present invention.

[0023] Figure 2 It is a cross-sectional view of the novel fire extinguishing bomb provided by the present invention.

[0024] Figure 3 The invention discloses a schematic diagram of the connection relationship between the open tail wing and the surrounding components in the novel fire extinguishing bomb provided by the invention.

[0025] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0026] The accompanying drawings are marked as follows:

[0027] 1-bullet top, 2-baffle, 3-bullet case, 4-longitudinal groove, 5-transverse groove, 6-bullet belt, 7-bullet belt groove, 8-tail groove, 9-tail base, 10-bullet base, 11-wing, 12-rotating shaft, 13-buckle, 14-tension spring, 15-position sensor, 16-slot, 17-dry powder fire extinguishing agent, 18-electronic detonator, 19-explosive, 20-explosion chamber. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figures 1 to 4 As shown, the novel fire extinguishing bomb provided by the present invention comprises a shell 3, the top end of the shell 3 is threadedly connected with a baffle 2, the top end of the baffle 2 is threadedly connected with a bomb top 1, the outer wall of the shell 3 is provided with a plurality of mutually parallel longitudinal grooves 4, a plurality of mutually parallel transverse grooves 5, an elastic belt groove 7 and four tail wing grooves 8, the elastic belt groove 7 and the four tail wing grooves 8 are located at the bottom of the shell 3, the four tail wing grooves 8 are evenly distributed along the circumference of the bottom of the shell 3, an elastic belt 6 is placed in the elastic belt groove 7, the inner diameter of the elastic belt 6 matches the outer diameter of the elastic belt groove 7, a first protrusion is connected to the position where the tail wing groove 8 is located on the shell 3, an open tail wing is located in the tail wing groove 8, the open tail wing includes a tail wing base 9 and a wing 11, and the first The protrusion is threadedly connected with a rotating shaft 12, the first protrusion is also threadedly connected with the tail base 9, the wing 11 is rotatably connected with the rotating shaft 12, the rotating shaft 12 is connected with the wing 11, the top of the wing 11 is higher than the elastic belt 6 so that the wing 11 is limited by the elastic belt 6, the tail base 9 is L-shaped, the side of the vertical part and the top surface of the horizontal part of the tail base 9 are fixedly connected with connecting rods, and the two connecting rods are connected with tension springs 14. The side of the horizontal part of the tail base 9 is connected with a buckle 13, and the bottom end of the wing 11 is provided with a slot 16, and the buckle 13 can be inserted into the slot 16. The middle of the top of the baffle 2 is threadedly connected with a position sensor 15, the inside of the shell 3 is connected with a fire extinguishing drive device, and the bottom of the shell 3 is threadedly connected with a shell bottom 10;

[0030] The fire extinguishing drive device includes an explosion cavity 20, which is threadedly connected to the middle part of the baffle 2. An electronic detonator 18 is placed in the explosion cavity 20, and the explosion cavity 20 is filled with explosives 19, which are filled around the electronic detonator 18. The shell 3 is filled with dry powder fire extinguishing agent 17, and the dry powder fire extinguishing agent 17 is located outside the explosion cavity 20. The position sensor 15 and the electronic detonator 18 are electrically connected to the controller.

[0031] The thread profile of the threaded connection can be triangular, and the direction of rotation is right-handed. The baffle 2 is used to separate the bullet top 1 from the bullet shell 3. The tension spring 14 is initially in an elongated state. The controller can be a single chip microcomputer, a PLC, etc.

[0032] The inner diameter of the elastic band 6 matches the outer diameter of the elastic band groove 7, which means that there is a gap between the inner diameter of the elastic band 6 and the outer diameter of the elastic band groove 7 when not assembled, providing space for the mutual assembly of the plastic elastic band 6 and the elastic band groove 7. The assembly is achieved by using a heat shrinking method, and the prestress generated by the shrinkage of the plastic elastic band 6 assembled by the heat shrinking method makes the elastic band 6 tightly hold the elastic band groove 7, and at this time there is no gap between the outer diameter of the elastic band groove 7 and the inner diameter of the elastic band 6.

[0033] In another specific embodiment, the bomb top 1 is a truncated cone structure to effectively reduce wind resistance.

[0034] In another specific embodiment, the longitudinal groove 4 and the transverse groove 5 are both V-shaped grooves.

[0035] In another specific embodiment, the material of the bomb base 10 and the open tail fins are both aluminum alloy. The material of the bomb base 10 is aluminum alloy, the purpose is to enable the new fire extinguishing bomb to withstand higher launch pressure during launch, thereby increasing the launch distance of the new fire extinguishing bomb.

[0036] In another specific embodiment, the rotating shaft 12 includes an inner ring and an outer ring, the first protrusion is threadedly connected to the inner ring of the rotating shaft 12, the outer ring of the rotating shaft 12 is provided with a groove, the wing 11 is connected with a second protrusion, and the second protrusion is clamped in the groove of the rotating shaft 12. When the tension spring 14 is reset, the wing 11 and the outer ring of the rotating shaft 12 are driven to rotate toward the position of the buckle 13.

[0037] In another specific embodiment, a battery is connected to the baffle 2, and the battery is connected to the electronic detonator 18 through a wire, and the wire is connected to an electromagnetic valve, and the electromagnetic valve is electrically connected to a controller. When the fire extinguishing agent is triggered to be dispersed, the controller controls the electromagnetic valve to open, so that the battery supplies power to the electronic detonator 18, and the electronic detonator 18 is detonated.

[0038] In another specific embodiment, the materials of the bullet top 1, the baffle 2, and the shell 3 are all ABS plastic, which not only makes the overall weight of the new fire extinguishing bomb relatively light, but also has good impact resistance, which can ensure that the shell 3 will not break during flight. In addition, ABS also has the characteristics of being easy to process, and the shell 3 that meets the requirements can be designed and processed as needed, and compared with metal materials, ABS plastic is relatively low in price, which reduces the production cost of the new fire extinguishing bomb. The material of the bullet belt 6 is plastic.

[0039] Furthermore, in order to ensure that the new fire extinguishing bomb can meet the strength requirements during launch and action, the embodiment of the present invention also specifically designs the wall thickness of the shell 3, the shell bottom 10 and the shell top 1, the open tail fins, the longitudinal grooves 4 and the transverse grooves 5, and the specific contents are as follows.

[0040] 1. Thickness of cartridge case 3:

[0041] First, the loading pressure caused by the axial inertial force when the new fire extinguishing bomb is launched is calculated using formula (1):

[0042]

[0043] In formula (1), P c Indicates the filling pressure of the new fire extinguishing bomb when it is launched; μc is the Poisson coefficient of the pressurized dry powder fire extinguishing agent 17; d is the diameter of the cartridge case 3; r an is the inner diameter of the cartridge case 3, m wn is the mass of the filling material at the upper part of the cross section (the mass of the internal components of the shell 3), m is the total mass of the new fire extinguishing bomb; P represents the launch pressure of the new fire extinguishing bomb, which is related to the launch pressure at the bottom of the shell launching device.

[0044] 2) For the shell 3 rupture model, according to the mass and momentum conservation conditions and the Mises yield criterion, the formula (2) for calculating the minimum wall thickness of the shell 3 is derived.

[0045]

[0046] In formula (2), δ is the minimum wall thickness of the shell 3, p2 is the bursting pressure of the shell 3, and p′ is the atmospheric pressure; is the yield strength of the shell material; c is the outer radius of the shell 3; b is the inner radius of the shell 3.

[0047] 3) For the bursting pressure of the cartridge case 3, the shell bursting value needs to be greater than the filling pressure. In the embodiment of the present invention, the bursting pressure of the cartridge case 3 is set equal to the filling pressure (i.e., P c =p2) to find the minimum wall thickness of the cartridge case 3.

[0048] 2. Wall thickness of bullet base 10 and bullet top 1:

[0049] Specifically, the thickness of the bullet base 10 and the bullet top 1 is calculated by formula (3):

[0050]

[0051] In formula (3), d is the diameter of the cartridge case 3; p is the maximum pressure in the warhead; and [σ] is the allowable stress of the cartridge case material.

[0052] p=p1+p2-p'(4)

[0053] In formula (4), p1 is the maximum pressure of the filling material on the side wall of the shell 3, and p1 = ρaλd, where ρ is the filling material density, a is the maximum acceleration of the new fire extinguishing bomb in the barrel, and λ is the aspect ratio of the new fire extinguishing bomb; p2 is the fuel vapor pressure (the fuel vapor pressure is a constant at a certain temperature); and p' is the atmospheric pressure.

[0054] 3. Open tail:

[0055] Specifically, the design of the open tail fin should satisfy the requirement that the belt 6 can ensure that the open tail fin does not open when in the chamber, but can open after exiting the muzzle and quickly reach the position. The condition that the open tail fin does not open before exiting the muzzle must satisfy formula (5):

[0056]

[0057] In formula (5), p3 is the pressure during the aftereffect period, p3 = p g e -αt , p g is the muzzle pressure, t represents the duration of the muzzle as the starting point, α is the empirical index, α=0.0263ln(p g / 0.101)V g / d,V g is the muzzle velocity of the new fire-extinguishing bomb, d is the diameter of the shell 3; m is the total mass of the new fire-extinguishing bomb; r e ω is the distance between the center of mass of the wing 11 and the axis of the projectile; g is the rotation speed of the new fire extinguishing bomb at the muzzle; r cp is the conversion radius of the gun bore section when the rifling is considered (constant, the specific value is the distance between the axis of the new fire-extinguishing bomb and the rifling); x e ,y e They are respectively the longitudinal and axial distances from the center of mass of the open tail wing to the rotation axis when the wing is in the closed state.

[0058] The stability reserve of the open tail wing also needs to be calculated. The formula for calculating the stability reserve of the open tail wing is formula (6):

[0059]

[0060] In formula (6), x p is the absolute distance from the resistance center of the new fire-extinguishing bomb to the bomb top 1; x s is the absolute distance from the center of mass of the new fire-extinguishing bomb to the bomb top 1; C p C is the relative distance from the resistance center of the new fire extinguishing bomb to the bomb top 1; s is the relative distance from the center of mass of the new fire extinguishing bomb to the bomb top 1; l is the total length of the new fire extinguishing bomb.

[0061] Among them, C p =(C pk ·C yk +C pw ·C yw ) / (C yk +C yw ), C yk is the lift coefficient of the new fire-extinguishing bomb, in the subsonic range C yk ≈δ1, δ1 is the projectile flight angle of attack. pk is the lift coefficient of the new fire-extinguishing bomb, C in the subsonic stage yk ≈0.5. C pw is the pressure center coefficient of the open tail, C pw =(x w +0.5bcp ) / l,x w is the distance from the leading edge of the average aerodynamic chord length of the open tail to the top of the missile 1, b cp is the average chord length of the open tail. yw is the lift coefficient of the open tail, λ w is the aspect ratio of the open tail, λ w =2l w / b cp , l w is the wingspan, S w is the area of ​​the wing 11, S is the maximum cross-sectional area of ​​the new fire extinguishing bomb, Ma is the flight Mach number of the new fire extinguishing bomb, Ma=v0 / a', v0 is the flight speed of the new fire extinguishing bomb, and a' is the speed of sound.

[0062] In order to make the new fire-extinguishing bomb stable in flight, B>0 must be achieved. When a good open tail stabilizes the new fire-extinguishing bomb, its stable reserve must be at least 15% to 28%.

[0063] The embodiment of the present invention also calculates the resonant instability of the open tail wing, and the calculation formula is formula (7):

[0064]

[0065] In formula (7), n r is the actual rotation speed of the new fire extinguishing bomb, n ro is the resonant speed, χ is the rotational angular velocity ω of the new fire extinguishing bomb r Ratio to linear velocity v, k z is a constant related to the aerodynamics of the new fire-extinguishing bomb.

[0066] According to experience, in order to avoid resonance instability, the actual equilibrium speed η of the open tail should be at least L and resonance speed n ro The ratio η reaches η≥1.4~4. The η value should not be too large, otherwise it will cause excessive dynamic unbalanced torque and have an adverse effect on the density.

[0067] 4. Longitudinal groove 4 and transverse groove 5:

[0068] Specifically, the pressure p1″ of the shell 2 breaking after stress concentration is calculated by formula (8):

[0069] p1″=p1′ / K(8)

[0070] In formula (8), p1′ is the force on the inner wall of the cartridge case 3; K is the stress concentration factor, and the stress concentration factors of the longitudinal groove 4 and the transverse groove 5 are calculated using finite element software.

[0071] Specifically, the stress concentration factor is related to the depth and width of the longitudinal groove 4 and the transverse groove 5. After the new fire extinguishing bomb is designed, the depth and width of the longitudinal groove 4 and the transverse groove 5 are determined according to the above formula.

[0072] The embodiment of the present invention also provides a method for using a new type of fire extinguishing bomb, which has been described in detail in the above embodiment and will not be repeated here. The method for using the new type of fire extinguishing bomb includes:

[0073] S1, when the new fire-extinguishing bomb is in the barrel movement stage of the artillery shell launching device, the wing 11 of the open tail wing is connected to the tail wing groove 8 through the rotating shaft 12, and the wing 11 is limited by the bomb belt 6.

[0074] S2, when the new fire extinguishing bullet is ejected from the muzzle of the artillery shell launcher, the band 6 expands so that a gap is formed between the band 6 and the band groove 7, and the emission gas in the gap (the emission gas here is generated when the artillery shell launcher launches the new fire extinguishing bullet) suddenly expands to instantly destroy the band 6, and the band 6 flies away from the shell case 3 under the action of the emission gas pressure; when the band 6 flies away, the constraint on the open tail fin disappears, and under the action of the tension spring 14, the wing 11 rotates with the rotating shaft 12, and when the slot 16 rotates to the position of the buckle 13, the slot 16 cooperates with the buckle 13 to fix the open tail fin. Among them, the reason for the expansion of the band 6 is the relative rotation between the barrel and the new fire extinguishing bullet, which causes the inner diameter of the plastic band 6 to produce slight wear and centrifugal inertia, so that the band 6 has a tendency to expand, so that a gap is generated between the outer diameter of the band groove 7 and the inner diameter of the band 6.

[0075] S3, the position sensor 15 monitors the position of the new fire extinguishing bomb in real time and sends the position data to the controller. When the controller determines that the new fire extinguishing bomb has reached the specified position according to the position data, the controller transmits the detonation signal to the electronic detonator 18, and the electronic detonator 18 detonates the explosive 19. The shock wave generated by the explosion is transmitted to the shell 3 through the dry powder fire extinguishing agent 17. The shell 3 is exploded and ruptured along the longitudinal grooves 4 and the transverse grooves 5 on the outer wall of the shell 3 by the shock wave, and the dry powder fire extinguishing agent 17 is scattered outward.

[0076] The novel fire extinguishing bomb and the use method thereof provided by the embodiment of the present invention have the following characteristics:

[0077] (1) The outer wall of the shell 3 is designed with longitudinal grooves 4 and transverse grooves 5. When the shell 3 is subjected to the shock wave of gunpowder, it can explode and rupture along the longitudinal grooves 4 and transverse grooves 5 on the outer wall of the shell 3, thereby controlling the size and shape of the fragments of the shell 3, so that the internal dry powder fire extinguishing agent can be more evenly and fully scattered, ensuring the uniformity of the extinguishing agent spreading, and improving the fire extinguishing efficiency of the new fire extinguishing bomb. At the same time, the controllability of the fragments of the shell 3 of the new fire extinguishing bomb is enhanced, reducing the risk of damage to the environment and personnel around the fire scene by the fragments of the shell 3, making the action process of the new fire extinguishing bomb safer.

[0078] (2) The design of the open tail fin improves the stability of the new fire-extinguishing bomb during flight, and can accurately reach the fire scene from a long distance to carry out fire extinguishing work, quickly and effectively controlling the fire, thereby reducing the casualties in the fire. In addition, the precise and efficient fire-extinguishing capability helps reduce the loss of forests, property and the environment caused by fire, and has a significant protective effect on social resources.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A new type of fire extinguishing bomb, characterized in that: The invention comprises a cartridge case (3), the top of which is connected to a baffle plate (2), the top of which is connected to a cartridge top (1), the outer wall of which is provided with a plurality of mutually parallel longitudinal grooves (4), a plurality of mutually parallel transverse grooves (5), an elastic belt groove (7) and four tail wing grooves (8), the elastic belt groove (7) and the four tail wing grooves (8) are located at the bottom of the cartridge case (3), the four tail wing grooves (8) are evenly distributed along the circumference of the bottom of the cartridge case (3), an elastic belt (6) is placed in the elastic belt groove (7), the inner diameter of the elastic belt (6) matches the outer diameter of the elastic belt groove (7), a first protrusion is connected to the position of the tail wing groove (8) on the cartridge case (3), an open tail wing is located in the tail wing groove (8), and the open tail wing comprises a tail wing base (9) and a wing piece (11) The first protrusion is connected to a rotating shaft (12), the first protrusion is also connected to the tail base (9), the wing (11) is rotatably connected to the rotating shaft (12), the top of the wing (11) is higher than the elastic belt (6) so that the wing (11) is limited by the elastic belt (6), the tail base (9) is L-shaped, the side of the vertical part and the top surface of the horizontal part of the tail base (9) are connected to connecting rods, and the two connecting rods are connected to tension springs (14), the side of the horizontal part of the tail base (9) is connected to a buckle (13), the bottom end of the wing (11) is provided with a slot (16), the buckle (13) can be inserted into the slot (16), the middle of the top of the baffle (2) is connected to a position sensor (15), the inside of the shell (3) is connected to a fire extinguishing drive device, and the bottom of the shell (3) is connected to the shell bottom (10); The fire extinguishing drive device comprises an explosion cavity (20), the explosion cavity (20) is connected to the middle of the baffle (2), an electronic detonator (18) is placed in the explosion cavity (20), the explosion cavity (20) is filled with explosives (19), the explosives (19) are filled around the electronic detonator (18), the shell (3) is filled with dry powder fire extinguishing agent (17), and the dry powder fire extinguishing agent (17) is located outside the explosion cavity (20), and the position sensor (15) and the electronic detonator (18) are both electrically connected to a controller.

2. The new fire extinguishing bomb according to claim 1 is characterized in that: The spring top (1) is a truncated cone structure.

3. The new fire extinguishing bomb according to claim 1 is characterized in that: The longitudinal groove (4) and the transverse groove (5) are both V-shaped grooves.

4. The new fire extinguishing bomb according to claim 1 is characterized in that: The materials of the missile base (10) and the open tail fin are both aluminum alloy.

5. The new fire extinguishing bomb according to claim 1 is characterized in that: The rotating shaft (12) comprises an inner ring and an outer ring, the first protrusion is connected to the inner ring of the rotating shaft (12), the outer ring of the rotating shaft (12) is provided with a groove, the wing (11) is connected to the second protrusion, and the second protrusion is clamped in the groove of the rotating shaft (12).

6. The new fire extinguishing bomb according to claim 1 is characterized in that: The baffle (2) is connected to a battery, the battery is connected to an electronic detonator (18) via a wire, the wire is connected to an electromagnetic valve, and the electromagnetic valve is electrically connected to a controller.

7. The new fire extinguishing bomb according to claim 1 is characterized in that: The materials of the bullet top (1), the baffle (2) and the bullet shell (3) are all ABS plastic, and the material of the bullet belt (6) is plastic.

8. A method for using a new type of fire extinguishing bomb, characterized in that: The novel fire extinguishing bomb according to any one of claims 1 to 7 comprises: S1, when the new fire-extinguishing bomb is in the barrel movement stage of the artillery shell launching device, the wing piece (11) of the open tail wing is connected to the tail wing groove (8) through the rotating shaft (12), and the wing piece (11) is limited by the bomb belt (6); S2, when the new fire extinguishing projectile is ejected from the muzzle of the projectile launching device, the band (6) expands so that a gap is formed between the band (6) and the band groove (7), and the propelling gas in the gap suddenly expands so that the band (6) is instantly destroyed, and the band (6) flies away from the shell (3) under the action of the propelling gas pressure; when the band (6) flies away, the constraint on the open tail fin disappears, and under the action of the tension spring (14), the wing (11) rotates with the rotating shaft (12), and when the slot (16) rotates to the position of the buckle (13), the slot (16) cooperates with the buckle (13) to fix the open tail fin; S3, the position sensor (15) monitors the position of the new fire extinguishing bomb in real time and sends the position data to the controller. When the controller determines that the new fire extinguishing bomb has reached the designated position based on the position data, the controller transmits a detonation signal to the electronic detonator (18). The electronic detonator (18) detonates the explosive (19). The shock wave generated by the explosion is transmitted to the shell (3) through the dry powder fire extinguishing agent (17). The shell (3) is exploded and ruptured along the longitudinal grooves (4) and the transverse grooves (5) on the outer wall of the shell (3) by the shock wave, and the dry powder fire extinguishing agent (17) is scattered outward.

Images