CN113750412A - Large-scale fire extinguishing bomb based on secondary scattering and fire extinguishing method - Google Patents

Abstract

The invention provides a large-scale fire extinguishing bomb based on secondary throwing and a fire extinguishing method, which comprise a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are connected in sequence, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets; the fire extinguishing bomb is thrown above a fire scene, secondary throwing operation is performed, the throwing radius is effectively improved, the fire extinguishing capability of the fire extinguishing bomb and the bullet distribution uniformity are improved, the fire extinguishing range of the fire extinguishing bomb is effectively enlarged, and the fire extinguishing efficiency is improved; meanwhile, the fire extinguishing bomb releasing device can ensure that the fire extinguishing bomb is released in the air, fire fighting personnel do not need to be close to a fire scene, the safety of the fire fighting personnel is greatly ensured, the fire extinguishing bomb can be released in the center of the fire scene, and the fire extinguishing precision is improved.

Description

Large-scale fire extinguishing bomb based on secondary scattering and fire extinguishing method

Technical Field

The invention belongs to the field of fire extinguishing bombs, and particularly relates to a large-scale fire extinguishing bomb based on secondary scattering and a fire extinguishing method.

Background

Forest and grassland fires are fire behaviors which lose artificial control, freely spread and expand in forest lands or grasslands and bring certain harm and loss to ecological systems of the forests and the grasslands and human beings. The large-scale fire belongs to a natural disaster with extremely high destructiveness, and the occurrence of the large-scale fire has strong randomness, frequency and diversity, so that the large-scale fire brings great difficulty to the treatment of the fire.

At present, the fire extinguishing mode aiming at forest and grassland fires in China is relatively laggard, the mode of extinguishing fire by people is mainly adopted, the fire extinguishing efficiency is low, the response speed is low, the resources of the forest and the grassland are easily lost, and meanwhile, the personal safety of fire fighters is easily influenced in the process of extinguishing fire.

As an efficient fire extinguishing means, the fire extinguishing bomb has the characteristics of high efficiency and quick response. However, the existing fire extinguishing bomb has the characteristic of large-scale fire extinguishing, is easy to cause the situation of delayed fire extinguishing, and is not beneficial to the actual demand of forest and grassland fire extinguishing.

Disclosure of Invention

In order to solve the problems, the invention provides a large-scale fire extinguishing bomb based on secondary scattering, which can effectively increase the fire extinguishing range of the fire extinguishing bomb and improve the fire extinguishing efficiency.

A large-scale fire extinguishing bomb based on secondary throwing comprises a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are connected in sequence, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets;

when the fire extinguishing bomb descends to a set height, the second cabin section, the third cabin section and the fourth cabin section release the respectively filled primary throwing bullets, and the primary throwing bullets of each cabin section have different initial throwing speeds; when each primary throwing bullet descends to a set height, each primary throwing bullet releases the respectively loaded secondary throwing bullet; when each secondary throwing bullet impacts the ground, each secondary throwing bullet is detonated to finish the throwing of the fire extinguishing agent.

Further, the fire extinguishing bomb comprises a fairing 1, four explosion-proof plates, three cabin sections, a structural bracket 4, a bullet outer bracket 5, a primary throwing bullet 6, a fire transfer tube 7, a central tube 10, a height setting fuse 11, an explosion-conducting cutting rope 12, a main power supply and single chip microcomputer integration device 14, a tail cabin outer shell 15, a tail wing 16, a temperature sensor 17 and a bullet inner bracket 18;

the four explosion-proof plates respectively connect the three cabin sections in series through the explosion-proof cutting cables 12 to form a second cabin section, a third cabin section and a fourth cabin section; the fairing 1 and the tail cabin shell 15 are respectively arranged at the head part of the second cabin section and the tail part of the fourth cabin section to correspondingly obtain a fairing cabin section and a tail cabin section;

the second cabin section, the third cabin section and the fourth cabin section are respectively provided with a structure bracket 4, a bullet outer bracket 5, a primary bullet throwing 6, a fire transmitting pipe 7, a central pipe 10, a height fixing fuse 11 and a bullet inner bracket 18, wherein the specific connection relations are as follows: the outer side of the structural bracket 4 depends on the cabin shell, the inner side of the structural bracket 4 supports the bullet outer bracket 5, and the one-time thrown bullet 6 is placed between the bullet outer bracket 5 and the bullet inner bracket 18; the bullet inner bracket 18 covers the fire transfer tube 7, and the surface of the fire transfer tube 7 is provided with air dispersion holes; the central tube 10 is positioned in the fire transfer tube 7, and gunpowder and a height-fixing fuse 11 are filled in the central tube 10; the diameters of the fire transfer tubes 7 and the central tube 10 in the second cabin section, the third cabin section and the fourth cabin section are sequentially increased, and the amount of fire in the central tube 10 is also sequentially increased;

the temperature sensor 17 is installed on the tail cabin shell 15, and the main power supply and single chip microcomputer integration device 14 is installed on a burst panel at the tail end of the fourth cabin section and used for supplying power to all components on the fire extinguishing bomb and executing instructions on the fire extinguishing bomb.

Further, the fairing 1 is conical in shape, and the included angle between the cone angle and the central axis is 70 degrees.

Further, the number of one-shot bullets filled in the second cabin section, the third cabin section and the fourth cabin section is increased in sequence.

Further, the shape of the tail cabin shell 15 is conical, the number of the tail wings 16 is four, and the four tail wings 16 are uniformly arranged on the tail cabin shell 15 at intervals of 90 degrees.

Further, the primary bullet throwing device comprises a fairing 19, a front explosion-proof plate 20, a front explosion-proof cutting rope 21, a shell 22, a structural bracket 23, a secondary bullet throwing device 24, a bullet inner bracket 25, a rear explosion-proof cutting rope 27, a fire transfer pipe 28, a central pipe 29, a height-fixing fuse 30, a temperature sensor 31, a tail cabin shell 32, a structural bracket 33, a T-shaped bracket 34, a spring 35, a stabilizing umbrella 36, a main power supply and single chip microcomputer integration device 37, a bullet outer bracket 39, a rear explosion-proof plate 40 and a tail wing 41;

the front explosion-proof plate 20 and the rear explosion-proof plate 40 are respectively assembled at two ends of the shell 22 through a front explosion-proof cutting cable 21 and a rear explosion-proof cutting cable 27 to form an assembly body; the fairing 19 and the tail cabin shell 32 are respectively arranged at the head part and the tail part of the assembly body; the structural bracket 23 rests on the inner wall of the shell 22, the inner side of the structural bracket 23 supports the bullet outer bracket 39, and the secondary cast bullet 24 is placed between the bullet inner bracket 25 and the bullet outer bracket 39; meanwhile, a fire transfer tube 28 is wrapped in the bullet inner bracket 25, a central tube 29 is arranged in the fire transfer tube 28, and gunpowder and a height-fixing fuse 30 are arranged in the central tube 29;

the temperature sensor 31, the T-shaped bracket 34 and the main power supply and single chip integration device 37 are all arranged on the rear explosion-proof plate 40; meanwhile, a structural bracket 33 which can freely slide on the T-shaped bracket 34 is arranged on the T-shaped bracket 34, and a spring 35 is also arranged between the T-shaped bracket 34 and the structural bracket 33; a stabilizing umbrella 36 is arranged at the bottom end of the T-shaped bracket 34, and the stabilizing umbrella 36 body is placed in the tail cabin shell 32; the rear fin 41 is installed at the side of the rear explosion barrier 40.

Further, the aft pod housing 32 is tapered in shape.

Further, the secondary throwing bullet comprises a fairing, a front explosion-proof plate, a rear explosion-proof plate, a shell, a fire transfer tube, a central tube, a tail cabin shell, a tail wing, a temperature sensor, a fire extinguishing agent 43, a main power supply and single chip microcomputer integrated device 44, an explosion-initiating cutting rope 45, a stabilizing umbrella 46 and an impact fuse 47;

the front explosion-proof plate and the rear explosion-proof plate are respectively assembled at two ends of the shell through an explosion-proof cutting rope 45 to form an assembly body; the fairing and the tail cabin shell are respectively arranged at the head part and the tail part of the assembly body; the fire transfer pipe is arranged in the assembly body, a central pipe is arranged in the fire transfer pipe, and gunpowder and an impact fuse 47 are arranged in the central pipe; the space between the fire transfer tube and the shell is filled with a fire extinguishing agent 43; after the secondary scattering bullet falls to the ground to generate impact, the impact fuse 47 works to complete the dispersion of the fire extinguishing agent 43;

the temperature sensor, the T-shaped bracket, the main power supply and the single chip integration device are all arranged on the rear explosion-proof plate; meanwhile, a structural bracket which can freely slide on the T-shaped bracket is arranged on the T-shaped bracket, and a spring is also arranged between the T-shaped bracket and the structural bracket; a stabilizing umbrella 46 is arranged at the bottom end of the T-shaped bracket, and a stabilizing umbrella 46 body is arranged in the tail cabin shell; the empennage is arranged on the side part of the rear explosion-proof plate.

Furthermore, an alarm device is arranged on the sensor, after the fire extinguishing agent 43 is dispersed for 20min, the current temperature condition is fed back, if an area with overhigh temperature still exists, an alarm sound is given out, the sensor is highlighted, and secondary fire extinguishing treatment is intensively carried out on the alarm area.

The using method of the fire extinguishing bomb comprises a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are connected in sequence, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets; the using method comprises the following steps:

firstly, mounting a fire extinguishing bomb mother bomb on an airplane, and vertically releasing the fire extinguishing bomb mother bomb after the fire extinguishing bomb mother bomb reaches a set height of the center of a fire area;

secondly, when the fire extinguishing bomb mother bomb releases to reach a set height, a single chip microcomputer on the fire extinguishing bomb mother bomb sends an instruction, each detonating fuse on the fire extinguishing bomb mother bomb works to complete the cabin opening work of the fire extinguishing bomb mother bomb, meanwhile, the height-fixing fuze works of each cabin section to ignite the explosive of the central tube, the horizontal initial velocity is obtained by throwing the bullet once, and the fire extinguishing bomb mother bomb is separated from the falling of the fire extinguishing bomb mother bomb; when the fire extinguishing bullet mother bullet is instructed by the singlechip, the singlechip on the primary bullet throwing starts to time, after the set time, the instruction is sent to control the operation of a detonating cutting cord at the tail cabin of the primary bullet throwing, the connection between the tail cabin shell and a detonation isolating plate is cut, the tail cabin shell is popped out under the action of a spring between a T-shaped bracket and a structural bracket, and a stabilizing umbrella positioned in the tail cabin shell is unfolded under the action of air flow, so that the primary bullet throwing falls stably at a constant speed;

when the primary thrown bullet falls to a set height, the single chip microcomputer for primary throwing bullet sends an instruction, a detonating cutting cord at the joint of the second cabin section for primary throwing bullet works, and a height setting fuse of the second cabin section works at the same time, so that cabin opening and secondary throwing bullet throwing operations for primary throwing bullet are completed; when the single chip microcomputer for throwing the bullets at the first time sends out an instruction, the single chip microcomputer for throwing the bullets at the second time starts timing, and after the set time, the instruction is sent out to control the operation of a detonating cutting cord at the tail cabin of the bullets for throwing the bullets at the second time, so that the stable umbrella is thrown out;

and finally, after the secondary throwing bullet falls to the ground to generate impact, the impact fuse on the secondary throwing bullet works to finish the throwing of the fire extinguishing agent.

Has the advantages that:

1. the invention provides a large-scale fire extinguishing bomb based on secondary scattering, which is thrown above a fire scene, secondary scattering operation is carried out, the scattering radius is effectively improved, the fire extinguishing capability of the fire extinguishing bomb and the bullet distribution uniformity are improved, the fire extinguishing range of the fire extinguishing bomb is effectively increased, and the fire extinguishing efficiency is improved; meanwhile, the fire extinguishing bomb releasing device can ensure that the fire extinguishing bomb is released in the air, fire fighting personnel do not need to be close to a fire scene, the safety of the fire fighting personnel is greatly ensured, the fire extinguishing bomb can be released in the center of the fire scene, and the fire extinguishing precision is improved.

2. The invention provides a large-scale fire extinguishing bomb based on secondary scattering, which can feed back the fire extinguishing condition of a fire scene through a sensor to prevent secondary fire.

3. The invention provides a using method of a fire extinguishing bomb, which can be mounted on an airplane, has a large fire extinguishing operation distance, can go deep into the center of a fire scene to perform fire extinguishing operation, and can extinguish fire at the first time; meanwhile, the fire extinguishing bomb is thrown above a fire scene, secondary throwing operation is performed, the throwing radius is effectively improved, the fire extinguishing capability of the fire extinguishing bomb and the bullet distribution uniformity are improved, the fire extinguishing range of the fire extinguishing bomb is effectively enlarged, and the fire extinguishing efficiency is improved.

Drawings

FIG. 1 is a schematic view of a large-scale fire-extinguishing bomb device based on secondary scattering provided by the invention;

FIG. 2 is a cross-sectional view of a fire extinguishing bomb provided by the present invention;

FIG. 3 is a schematic view of a single shot of the present invention;

FIG. 4 is a schematic diagram of a secondary bullet drop provided by the present invention;

FIG. 5 is a schematic diagram of the distribution of the drop points of the fire extinguishing bomb provided by the invention;

1-fairing of the fire extinguishing bomb shell, 2-explosion-proof plate between fairing cabin section and second cabin section on the fire extinguishing bomb shell, 3-cabin section shell of second cabin section on the fire extinguishing bomb shell, 4-structural bracket of second cabin section on the fire extinguishing bomb shell, 5-bullet outer bracket of second cabin section on the fire extinguishing bomb shell, 6-one-time throwing bullet, 7-fire tube of second cabin section on the fire extinguishing bomb shell, 8-explosion-proof plate between second cabin section and third cabin section on the fire extinguishing bomb shell, 9-fire tube of third cabin section on the fire extinguishing bomb shell, 10-central tube of second cabin section on the fire extinguishing bomb shell, 11-height setting fuse of third cabin section on the fire extinguishing bomb shell, 12-explosion-fuse of third cabin section on the fire extinguishing bomb shell, 8-explosion-cutting cable between fourth cabin section and tail cabin section on the fire extinguishing bomb shell, 14-main power supply and single chip microcomputer integrated device on the fire extinguishing bomb mother bomb, 15-tail cabin shell on the fire extinguishing bomb mother bomb, 16-tail wing on the fire extinguishing bomb mother bomb, 17-temperature sensor on the fire extinguishing bomb mother bomb, 18-bullet inner bracket of the second cabin section on the fire extinguishing bomb mother bomb, 19-fairing of primary throwing bullet, 20-front explosion baffle of primary throwing bullet, 21-front explosion cutting rope of primary throwing bullet, 22-shell of primary throwing bullet, 23-structural bracket of primary throwing bullet, 24-secondary throwing bullet, 25-inner bracket of primary throwing bullet, gap between 26-structural bracket of primary throwing bullet and shell, 27-back explosion cutting rope of primary throwing bullet, 28-fire tube of primary throwing bullet, 29-central tube of primary throwing bullet, air-jet blower, 30-a fixed height fuze for throwing the bullet once, 31-a temperature sensor for throwing the bullet once, 32-a tail cabin shell for throwing the bullet once, 33-a structural bracket for throwing the bullet once, 34-a T-shaped bracket for throwing the bullet once, 35-a spring for throwing the bullet once, 36-a stable umbrella for throwing the bullet once, 37-a main power supply and single chip microcomputer integration device for throwing the bullet once, 38-another rear detonating cutting cord for throwing the bullet once, 39-a bullet outer bracket for throwing the bullet once, 40-a rear explosion baffle for throwing the bullet once and 41-a tail wing for throwing the bullet once; 43-fire extinguishing agent, 44-main power supply and single chip integrated device for secondary bullet throwing, 45-detonating cutting cord for secondary bullet throwing, 46-stabilizing umbrella for secondary bullet throwing and 47-impact fuse for secondary bullet throwing.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

A large-scale fire extinguishing bomb based on secondary throwing comprises a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are connected in sequence, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets; when the fire extinguishing bomb descends to a set height, the second cabin section, the third cabin section and the fourth cabin section release the respectively filled primary throwing bullets, and the primary throwing bullets of each cabin section have different initial throwing speeds; when each primary throwing bullet descends to a set height, each primary throwing bullet releases the respectively loaded secondary throwing bullet; when each secondary throwing bullet impacts the ground, each secondary throwing bullet is detonated to finish the throwing of the fire extinguishing agent.

Fig. 1 shows a schematic diagram of a fire extinguishing bomb shell of the invention, which comprises a fairing 1, four explosion-proof plates, three cabin sections, a structural bracket 4, a bullet outer bracket 5, a primary throwing bullet 6, a fire transfer tube 7, a central tube 10, a height-fixing fuse 11, an explosion-conducting cutting rope 12, a main power supply and single chip microcomputer integration device 14, a bullet inner bracket 18, a tail cabin shell 15, a tail fin 16 and a temperature sensor 17.

The fairing 1 is used for keeping the pneumatic appearance of the parent bomb in the ground falling process, so that the parent bomb has good ballistic performance, the appearance of the parent bomb is conical, and the included angle between the parent bomb and a central axis is 70 degrees. The fairing 1 and the explosion-proof plate 2 are assembled to form a fairing cabin section, and the interior of the fairing cabin section is hollow.

The cross-sectional structure of the second cabin section is as shown in fig. 2, and is loaded with 8 bullets, and the cross-sectional structures of the third and fourth cabin sections are substantially the same as the structure of the second cabin section, and the differences are that the diameters of the fire transfer tubes and the central explosion tubes of the third and fourth cabin sections are larger than the diameter of the second cabin section, the diameter of the fourth cabin section is the largest, the explosive loading is the largest, the diameter of the second cabin section is the smallest, and the explosive loading is the smallest, so that bullets of different cabin sections can obtain different initial throwing speeds, and meanwhile, the explosive loading of the third and fourth cabin sections is larger than that of the second cabin section and is respectively 10 bullets and 12 bullets.

Since the layout of the three sections is the same, the second section is described below as an example. As shown in fig. 1, an assembly body is formed by assembling an explosion-proof plate 2 and a shell 3, and an explosion-proof cutting cable is arranged at the assembly position; the shell 3 is also assembled with the explosion-proof plate 3 to form an assembly body, an explosion-proof cutting cable is arranged at the assembly position, and the explosion-proof cutting cable 12 is used for completing the cabin opening operation of the mother bomb. And a structural support is arranged at the position, close to the inner wall, of the second cabin section and is used for supporting the bullet bracket. The one-shot bullet 6 is placed in a bullet holder which is divided into an outer holder and an inner holder. Wherein the outer side of the structural bracket 4 rests against the shell 3 and the inner side thereof holds the bullet outer bracket 5, and a single shot 6 is placed between the bullet outer bracket 5 and the bullet inner bracket 18. The bullet inner bracket 18 covers the fire transfer tube 7, and the surface of the fire transfer tube 7 is provided with a plurality of air diffusion holes which are used for enabling high-pressure fuel gas to uniformly act on the bullet inner bracket. A central tube 10 is located in the squib 7, the inside of the central tube 10 being charged with gunpowder and a fuse.

The shape of the tail cabin shell 15 is conical, the tail cabin shell and the explosion-proof plate 13 connected with the fourth cabin section are assembled to form an assembly body, the tail wings 16 are installed on the shell 15, and 4 tail wings are uniformly installed at 90 degrees. The temperature sensor 17 is mounted on the housing 15 as shown in fig. 1. The main power supply and single chip microcomputer integration device 14 is installed on the explosion-proof plate 13 and used for supplying power to all equipment on the bomb and executing instructions on the bomb.

Fig. 3 shows a schematic diagram of one shot blasting according to the present invention: a total of three sections are included.

A first deck section: the first cabin section is a fairing cabin section, and the interior of the fairing cabin section is hollow. The fairing 19 and the explosion-proof plate 20 are assembled to form an assembly body.

A second cabin section: the second cabin section is a cabin section filled with the primary throwing bullets, and the primary throwing bullets are filled with 8 secondary throwing bullets. The front end of the second cabin section is assembled with the explosion-proof plate connected with the fairing to form an assembly body, the rear end of the second cabin section is assembled with the explosion-proof plate to form the assembly body, and the assembly part is provided with an explosion-proof cutting rope. The structural bracket 23 rests at the interior of the housing 22, the inner side of the structural bracket 23 holding the bullet outer bracket 39. The bullet holder is divided into an outer holder 39 and an inner holder 25, in which the secondary blasting bullets 24 are placed. The transfer tube 28 is wrapped in the bullet inner bracket 25, and the transfer tube 28 is internally provided with a central tube 29 which is internally provided with gunpowder and a height-fixing fuse 30.

A third cabin section: the third cabin section is a tail cabin section. The shape of the tail cabin is cone-cut, the tail cabin shell 32 and the explosion-proof plate 40 are assembled to form an assembly body, and the explosion-leading cutting rope 38 is installed at the assembly position. The temperature sensor 31 is installed on the explosion-proof plate 40, and the main power supply and one-chip microcomputer integration device 37 is installed on the explosion-proof plate 40. The T-shaped bracket 34 is mounted on the explosion-proof plate 40, the T-shaped bracket 34 is mounted with a structural bracket 33 that can slide freely on the T-shaped bracket 34, and a spring 35 is mounted between the two brackets, as shown in fig. 3. The bottom end of the T-shaped bracket is provided with a stabilizing umbrella 36, and the stabilizing umbrella body is arranged in the tail cabin. The tail fin 41 is installed at the side of the explosion barrier 40 as shown in fig. 3.

Fig. 4 is a schematic diagram of the fire extinguishing bomb for secondary bullet throwing according to the present invention. The structure of the secondary throwing of the bullet is substantially the same as the structure of the primary throwing of the bullet, with the difference that the second chamber section is internally filled with the fire extinguishing agent 43. Specifically, the secondary bullet throwing device comprises a fairing, a front explosion-proof plate, a rear explosion-proof plate, a shell, a fire transfer tube, a central tube, a tail cabin shell, a tail wing, a temperature sensor, a fire extinguishing agent 43, a main power supply and single chip microcomputer integration device 44, an explosion-initiating cutting rope 45, a stabilizing umbrella 46 and an impact fuse 47.

The front explosion-proof plate and the rear explosion-proof plate are respectively assembled at two ends of the shell through an explosion-proof cutting rope 45 to form an assembly body; the fairing and the tail cabin shell are respectively arranged at the head part and the tail part of the assembly body; the fire transfer pipe is arranged in the assembly body, a central pipe is arranged in the fire transfer pipe, and gunpowder and an impact fuse 47 are arranged in the central pipe; the space between the fire transfer tube and the shell is filled with a fire extinguishing agent 43; after the secondary dispersion bullet falls to the ground to impact, the impact fuse 47 works to complete the dispersion of the fire extinguishing agent 43.

The temperature sensor, the T-shaped bracket, the main power supply and the single chip integration device are all arranged on the rear explosion-proof plate; meanwhile, a structural bracket which can freely slide on the T-shaped bracket is arranged on the T-shaped bracket, and a spring is also arranged between the T-shaped bracket and the structural bracket; a stabilizing umbrella 46 is arranged at the bottom end of the T-shaped bracket, and a stabilizing umbrella 46 body is arranged in the tail cabin shell; the empennage is arranged on the side part of the rear explosion-proof plate.

According to the invention, a large-scale fire extinguishing bomb based on secondary scattering is provided, and a using method of the fire extinguishing bomb is provided. It includes the release of fire extinguishing bomb, the first throwing of bullet, the second throwing of bullet and the explosion of the second throwing bullet.

First, a fire extinguishing bomb mother bomb was mounted on an airplane, and after reaching a height of 100m at the center of a fire area, the fire extinguishing bomb mother bomb was vertically released.

Secondly, the type of the fuze 11 on the fire extinguishing bomb shell is a fixed-height fuze, when the height of the fire extinguishing bomb shell is reduced to 90m, the single chip microcomputer 14 sends an instruction, each detonating cutting rope 12 on the shell works to complete the cabin opening operation of the shell, meanwhile, the fuze 11 of each cabin section works to ignite the explosive in the central tube 7, the initial speeds of the second, third and fourth cabin sections for throwing the bullet 6 for the first time are respectively 10m/s, 30m/s and 50m/s, and the bullet falls off the shell. When the single-chip microcomputer of the bullet gives an instruction, the single-chip microcomputer 38 of the bullet starts timing, after the interval is 0.1s, the instruction is given to control the operation of the detonating cutting cord 38 at the tail cabin of the primary bullet throwing, the connection between the tail cabin shell 32 and the explosion isolating plate 40 is cut, the tail cabin shell 32 is popped out under the action of the spring 35 between the T-shaped bracket 34 and the structural bracket 33, the stabilizing umbrella 36 positioned in the tail cabin is unfolded under the action of air flow, the primary bullet throwing stably drops at a constant speed, and the dropping speed of the primary bullet throwing is designed to be 25 m/s.

And thirdly, the type of the fuze 30 on the primary bullet throwing is a fixed-height fuze, when the primary bullet throwing falls to 15m, the single chip microcomputer 37 sends an instruction, the detonating cutting cords 21 and 27 at the joint of the second cabin section of the primary bullet throwing work, meanwhile, the fuze 30 of the second cabin section works, the cabin opening of the primary bullet throwing 24 and the secondary bullet throwing operation are completed, and the primary speed of the secondary bullet throwing is designed to be 50 m/s. And when the primary bullet throwing single-chip microcomputer 38 sends an instruction, the secondary bullet throwing single-chip microcomputer 44 starts timing, and after 0.1s, the secondary bullet throwing single-chip microcomputer sends an instruction to control the operation of a detonating cutting cord 45 at the tail cabin of the secondary bullet throwing to complete the throwing of the stabilizing umbrella 46, and the drop speed of the secondary bullet throwing is designed to be 25 m/s.

Therefore, the final bullet throwing radiuses of the first cabin section, the second cabin section and the third cabin section of the mother bullet are respectively 180m, 120m and 60m according to the falling speed, the falling height and the initial throwing speed.

Generating bullet drop point coordinates according to Monte-Carlo simulation target shooting mode and drop point coordinate X of ith bullet of shrapnel_ij，Y_ijComprises the following steps:

wherein R is the throwing radius of the shrapnel, X_i，Y_iAs the coordinates of the drop point of the bullet, r₁、r₂Are uniformly distributed random numbers which are independent from each other between 0 and 1. The distribution of the bullet drop points obtained by Matlab simulation calculation is shown in FIG. 5, and it can be seen that the fire extinguishing bomb can achieve a good fire extinguishing effect when the fire extinguishing radius is within 120 m.

Finally, the type of the fuze 47 on the secondary dispersion bullet is an impact fuze, and after the secondary dispersion bullet falls to the ground to generate impact, the fuze 47 works to complete the dispersion of the fire extinguishing agent 43. Meanwhile, the fire extinguishing bomb parent bomb and the primary throwing bullet are both provided with a temperature sensor 17 and a temperature sensor 31, the sensors are provided with alarm devices, after the fire extinguishing agent 43 is dispersed for 20min, the temperature conditions of the fire extinguishing bomb parent bomb and the primary throwing bullet are fed back, if an area with overhigh temperature still exists, an alarm sound is given out, the sensors are highlighted, and secondary fire extinguishing treatment is intensively carried out on the alarm area.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it will be understood by those skilled in the art that various changes and modifications may be made herein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A large-scale fire extinguishing bomb based on secondary throwing is characterized by comprising a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are connected in sequence, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets;

when the fire extinguishing bomb descends to a set height, the second cabin section, the third cabin section and the fourth cabin section release the respectively filled primary throwing bullets, and the primary throwing bullets of each cabin section have different initial throwing speeds; when each primary throwing bullet descends to a set height, each primary throwing bullet releases the respectively loaded secondary throwing bullet; when each secondary throwing bullet impacts the ground, each secondary throwing bullet is detonated to finish the throwing of the fire extinguishing agent.

2. The large-scale fire extinguishing bomb based on secondary throwing according to claim 1, characterized in that the fire extinguishing bomb comprises a fairing (1), four explosion-proof plates, three cabin shells, a structural bracket (4), a bullet outer bracket (5), a primary throwing bullet (6), a fire transfer pipe (7), a central pipe (10), a height setting fuse (11), a detonating cutting cord (12), a main power supply and single chip microcomputer integrated device (14), a tail cabin shell (15), a tail wing (16), a temperature sensor (17) and a bullet inner bracket (18);

the four explosion-proof plates respectively connect the three cabin sections in series through the explosion-conducting cutting cables (12) to form a second cabin section, a third cabin section and a fourth cabin section; the fairing (1) and the tail cabin shell (15) are respectively arranged at the head part of the second cabin section and the tail part of the fourth cabin section to correspondingly obtain a fairing cabin section and a tail cabin section;

all install in second cabin section, third cabin section and the fourth cabin section that structure bracket (4), bullet outer bracket (5), once spill bullet (6), fire tube (7), center tube (10), level fuze (11) and bullet inner bracket (18), specific connection is wherein: the outer side of the structure bracket (4) depends on the cabin shell, the inner side of the structure bracket (4) supports the bullet outer bracket (5), and the bullet (6) which is thrown once is placed between the bullet outer bracket (5) and the bullet inner bracket (18); the bullet inner bracket (18) covers the fire transfer pipe (7), and the surface of the fire transfer pipe (7) is provided with air dispersion holes; the central tube (10) is positioned in the fire transfer tube (7), and gunpowder and a height-fixing fuse (11) are filled in the central tube (10); the diameters of the fire transmission pipes (7) and the central pipe (10) in the second cabin section, the third cabin section and the fourth cabin section are sequentially increased, and the amount of fire in the central pipe (10) is also sequentially increased;

the temperature sensor (17) is installed on a tail cabin shell (15), and the main power supply and single chip microcomputer integration device (14) is installed on a detonation plate at the tail of the fourth cabin section and used for supplying power to all components on the fire extinguishing bomb and executing instructions on the fire extinguishing bomb.

3. A large scale fire extinguishing bomb based on secondary throwing according to claim 2, characterised in that the fairing (1) is conical in shape and the angle of the cone is 70 ° to the central axis.

4. A large-scale fire extinguishing bomb based on secondary dispersion according to claim 2, characterized in that the number of primary dispersion bullets charged in the second chamber section, the third chamber section and the fourth chamber section is increased in turn.

5. A large-scale fire extinguishing bomb based on secondary throwing as claimed in claim 2, characterised in that the outer shape of the tail chamber shell (15) is conical, the number of the tail wings (16) is four, and the four tail wings (16) are uniformly installed on the tail chamber shell (15) at intervals of 90 °.

6. The large-scale fire extinguishing bomb based on secondary throwing according to claim 1, characterized in that the primary throwing bullet comprises a fairing (19), a front explosion-proof plate (20), a front explosion-proof cutting rope (21), a shell (22), a structural bracket (23), a secondary throwing bullet (24), a bullet inner bracket (25), a rear explosion-proof cutting rope (27), a fire transmission pipe (28), a central pipe (29), a height setting fuse (30), a temperature sensor (31), a tail cabin shell (32), a structural bracket (33), a T-shaped bracket (34), a spring (35), a stabilizing umbrella (36), a main power supply and single chip microcomputer integrated device (37), a bullet outer bracket (39), a rear explosion-proof plate (40) and a tail wing (41);

the front explosion-proof plate (20) and the rear explosion-proof plate (40) are respectively assembled at two ends of the shell (22) through a front explosion-proof cutting cable (21) and a rear explosion-proof cutting cable (27) to form an assembly body; the fairing (19) and the tail cabin shell (32) are respectively arranged at the head part and the tail part of the assembly body; the structure bracket (23) is arranged on the inner wall of the shell (22), the inner side of the structure bracket (23) supports the bullet outer bracket (39), and the secondary throwing bullet (24) is arranged between the bullet inner bracket (25) and the bullet outer bracket (39); meanwhile, a fire transfer pipe (28) is wrapped in the bullet inner bracket (25), a central pipe (29) is arranged inside the fire transfer pipe (28), and gunpowder and a height-fixing fuse (30) are arranged inside the central pipe (29);

the temperature sensor (31), the T-shaped bracket (34), the main power supply and the singlechip integration device (37) are all arranged on the rear explosion-proof plate (40); meanwhile, a structural bracket (33) which can freely slide on the T-shaped bracket (34) is arranged on the T-shaped bracket (34), and a spring (35) is also arranged between the T-shaped bracket (34) and the structural bracket (33); a stabilizing umbrella (36) is arranged at the bottom end of the T-shaped bracket (34), and the stabilizing umbrella (36) body is placed in the tail cabin shell (32); the tail fin (41) is installed at the side of the rear explosion-proof plate (40).

7. A large-scale fire extinguishing bomb based on secondary throwing as claimed in claim 6, characterised in that the tail tank shell (32) is of a cone cut shape.

8. The large-scale fire extinguishing bomb based on secondary throwing as claimed in claim 1, characterized in that the secondary throwing bullet comprises a fairing, a front explosion-proof plate, a rear explosion-proof plate, a shell, a fire-transfer tube, a central tube, a tail cabin shell, a tail wing, a temperature sensor, a fire extinguishing agent (43), a main power supply and single chip microcomputer integrated device (44), an explosion-leading cutting rope (45), a stabilizing umbrella (46), and an impact fuse (47);

the front explosion-proof plate and the rear explosion-proof plate are respectively assembled at two ends of the shell through an explosion-proof cutting rope (45) to form an assembly body; the fairing and the tail cabin shell are respectively arranged at the head part and the tail part of the assembly body; the fire transfer pipe is arranged in the assembly body, a central pipe is arranged in the fire transfer pipe, and gunpowder and an impact fuse (47) are arranged in the central pipe; the space between the fire transfer pipe and the shell is filled with fire extinguishing agent (43); after the secondary throwing bullet falls to the ground to generate impact, the impact fuse (47) works to complete the dispersion of the fire extinguishing agent (43);

the temperature sensor, the T-shaped bracket, the main power supply and the single chip integration device are all arranged on the rear explosion-proof plate; meanwhile, a structural bracket which can freely slide on the T-shaped bracket is arranged on the T-shaped bracket, and a spring is also arranged between the T-shaped bracket and the structural bracket; a stabilizing umbrella (46) is arranged at the bottom end of the T-shaped bracket, and a stabilizing umbrella (46) body is placed in the tail cabin shell; the empennage is arranged on the side part of the rear explosion-proof plate.

9. A large-scale fire extinguishing bomb based on secondary scattering according to claim 8, characterized in that the sensor is equipped with an alarm device, after the extinguishing agent (43) is dispersed for 20min, the current temperature situation is fed back, if there is still an area with over-high temperature, an alarm sound is given and the sensor itself is highlighted, and the secondary fire extinguishing treatment is intensively carried out on the alarm area.

10. The using method of the fire extinguishing bomb is characterized by comprising a fairing cabin section, a second cabin section, a third cabin section, a fourth cabin section and a tail cabin section which are sequentially connected, wherein the second cabin section, the third cabin section and the fourth cabin section are used for filling primary throwing bullets, secondary throwing bullets are filled in the primary throwing bullets, and fire extinguishing agents are filled in the secondary throwing bullets; the using method comprises the following steps:

firstly, mounting a fire extinguishing bomb mother bomb on an airplane, and vertically releasing the fire extinguishing bomb mother bomb after the fire extinguishing bomb mother bomb reaches a set height of the center of a fire area;

secondly, when the fire extinguishing bomb mother bomb releases to reach a set height, a single chip microcomputer on the fire extinguishing bomb mother bomb sends an instruction, each detonating fuse on the fire extinguishing bomb mother bomb works to complete the cabin opening work of the fire extinguishing bomb mother bomb, meanwhile, the height-fixing fuze works of each cabin section to ignite the explosive of the central tube, the horizontal initial velocity is obtained by throwing the bullet once, and the fire extinguishing bomb mother bomb is separated from the falling of the fire extinguishing bomb mother bomb; when the fire extinguishing bullet mother bullet is instructed by the singlechip, the singlechip on the primary bullet throwing starts to time, after the set time, the instruction is sent to control the operation of a detonating cutting cord at the tail cabin of the primary bullet throwing, the connection between the tail cabin shell and a detonation isolating plate is cut, the tail cabin shell is popped out under the action of a spring between a T-shaped bracket and a structural bracket, and a stabilizing umbrella positioned in the tail cabin shell is unfolded under the action of air flow, so that the primary bullet throwing falls stably at a constant speed;

when the primary thrown bullet falls to a set height, the single chip microcomputer for primary throwing bullet sends an instruction, a detonating cutting cord at the joint of the second cabin section for primary throwing bullet works, and a height setting fuse of the second cabin section works at the same time, so that cabin opening and secondary throwing bullet throwing operations for primary throwing bullet are completed; when the single chip microcomputer for throwing the bullets at the first time sends out an instruction, the single chip microcomputer for throwing the bullets at the second time starts timing, and after the set time, the instruction is sent out to control the operation of a detonating cutting cord at the tail cabin of the bullets for throwing the bullets at the second time, so that the stable umbrella is thrown out;

and finally, after the secondary throwing bullet falls to the ground to generate impact, the impact fuse on the secondary throwing bullet works to finish the throwing of the fire extinguishing agent.

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