CN211383573U

CN211383573U - Fire-fighting armor-breaking bomb

Info

Publication number: CN211383573U
Application number: CN201922206095.3U
Authority: CN
Inventors: 金承珂; 崔玉龙
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-01
Anticipated expiration: 2029-12-11

Abstract

The utility model relates to a fire control is with broken first bullet of putting out a fire, including consecutive warhead, columniform middle section and conical tail cone section, the warhead inner head sets up the type of a medicine cover, and the ladder groove is opened to tail middle position in the warhead, and the less section afterbody of ladder inslot diameter sets up the firing pin, and the fixed fuze that sets up of the great section of ladder inslot diameter. Liquid carbon dioxide is filled in a closed cavity between the liner and the fuse in the bullet head, and propellant powder is installed at the tail end of the tail cone section. The utility model discloses a when the first shell bullet of putting out a fire hit the door, the firing pin collided to the fuse, and the fuse explosion emits high fever, makes liquid carbon dioxide vaporization and produces thrust, promotes the type cover according to the door effect and produces a short and thick metal jet puncture door plant. The expanded carbon dioxide gas is sprayed into the fire scene from the perforation at the front part of the warhead to extinguish the fire. The utility model discloses a broken first bullet of putting out a fire can greatly improve broken door and the efficiency of putting out a fire to guarantee the fire fighter's safety to a certain extent.

Description

Fire-fighting armor-breaking bomb

Technical Field

The utility model belongs to the fire control field, concretely relates to fire control is with broken first bullet of putting out a fire.

Background

The progress of human society is accompanied by the utilization and research on fire, and the use of fire brings convenience to people and simultaneously brings disasters to people due to improper use. According to incomplete statistics, only 2018, the number of fire disasters reported in China reaches more than 20 thousands, and serious economic loss and casualties are caused.

With the development of technology, various fire extinguishing agents and fire extinguishing equipment are developed successively. However, when a fire occurs in a building, a fire fighter always has a problem of how to break the door to extinguish the fire. The reason is that: the door is directly damaged, and high-temperature and high-pressure flame can burst out of the door to burn firemen. Meanwhile, the air can be circulated when the door is opened, so that the fire is easily enhanced, the subsequent fire extinguishing work is difficult, and the possibility of causing greater casualties and economic loss is realized.

Disclosure of Invention

In order to solve the fire disaster door-breaking difficult problem in the background technology, the utility model provides a fire-fighting armor-breaking bomb for fire fighting.

The utility model discloses the technical scheme who adopts does:

a fire extinguishing armor-breaking bomb for fire fighting comprises a warhead, a cylindrical middle section and a conical tail cone section which are sequentially connected, wherein a liner is arranged at the inner head of the warhead, a step groove is formed in the middle position of the inner tail part of the warhead, a firing pin is arranged at the tail part of the section with the smaller inner diameter of the step groove, and the firing pin is in interference fit with the inner wall surface of the section with the smaller diameter of the step groove; a fuse is fixedly arranged at the section with the larger diameter in the step groove, the fuse is tightly attached to the step surface of the step groove, a circumferential sealing ring is further arranged between the fuse and the section with the larger diameter in the step groove, and a safety gap is reserved between the firing pin and the fuse; liquid carbon dioxide is filled in the warhead and a closed cavity between the liner and the fuse; and the tail end of the tail cone section is provided with propellant powder.

Furthermore, a plurality of stabilizing wings are uniformly arranged on the outer side of the middle section along the circumferential direction.

Further, the number of the stabilizer wings is three.

Furthermore, the liner is a red copper liner with a cone angle of 130 degrees.

Further, the tail cone section adopts Morse taper.

Further, the pressure of the liquid carbon dioxide filled in the closed cavity is 10MPa to 12 MPa.

Further, an interlayer is arranged in the shell of the warhead, and asbestos cloth used for preserving heat of liquid carbon dioxide is wrapped in the interlayer.

The beneficial effects of the utility model reside in that:

the utility model discloses a broken first bullet of putting out a fire is launched by shouldering formula launching tube, and when the warhead of the broken first bullet of putting out a fire hit the door, the firing pin was owing to inertia breaks away from "firing pin pipe box" (step groove diameter is less section) and hits to the detonator, and the detonator explosion emits high fever, makes liquid carbon dioxide vaporization and produces thrust, according to the leno effect, promotes the shaped charge cover and produces a short and thick metal efflux and punctures the door plant. Meanwhile, the expanded carbon dioxide gas gushes into a fire scene from the perforation at the front part of the warhead to extinguish fire, and then a fireman can not gush out flame by breaking the door. The utility model discloses a broken first bullet of putting out a fire can help the fire fighter to accomplish a series of operations such as broken door, put out a fire rapidly, can greatly improve the efficiency of broken door and putting out a fire to guarantee the fire fighter's safety to a certain extent.

Drawings

FIG. 1 is a schematic structural view of the fire extinguishing armor-breaking bomb of the present invention;

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

reference numerals: 1-warhead, 2-middle section, 3-tail cone section, 4-liner, 5-step groove, 6-firing pin, 7-fuze, 8-closed cavity, 9-stabilizing wing and 10-propellant powder.

Detailed Description

The fire-fighting armor-piercing bomb of the present invention will be further described in detail with reference to the accompanying drawings and specific examples.

The fire-extinguishing armor-breaking bomb as shown in fig. 1 and fig. 2 comprises a warhead 1, a cylindrical middle section 2 and a conical tail cone section 3 which are sequentially connected, wherein a liner cover 4 is arranged at the head part in the warhead 1, a stepped groove 5 is formed in the middle position of the tail part in the warhead 1, a firing pin 6 is arranged at the tail part of the section with the smaller diameter in the stepped groove 5, and the firing pin 6 is in interference fit with the inner wall surface of the section with the smaller diameter in the stepped groove 5. The fuse 7 is fixedly arranged at the large diameter section in the step groove 5, the fuse 7 is tightly attached to the step surface of the step groove 5, a circumferential sealing ring is further arranged between the fuse 7 and the large diameter section of the step groove 5, and a safety gap is reserved between the firing pin 6 and the fuse 7. Liquid carbon dioxide is filled in the bullet 1 and a closed cavity 8 between the liner 4 and the fuse 7. The tail end of the tail cone section 3 is provided with propellant powder 10. In this embodiment, propellant 10 is cylindrical, has low mechanical sensitivity, and is electronically triggered to produce a high-burn rate propellant.

In addition, a plurality of stabilizing wings 9 are uniformly arranged on the outer side of the middle section 2 along the circumferential direction, in the embodiment, the number of the stabilizing wings 9 is three (the stabilizing wings 9 can control the resistance of the armor-breaking bomb in flying at the rear, so that the influence of the nutation effect on the stability of the bomb body is reduced, and the penetration depth is reduced because the metal jet flow generates centrifugal inertia force due to the rotation of the bomb body, so that the armor-breaking bomb can fly more stably by additionally arranging the stabilizing wings 9).

In this embodiment, the liner 4 is a red copper liner having a taper angle of 130 degrees, and is welded and fixed to the inner wall surface of the bullet 1 in the circumferential direction. The large cone angle liner 4 can produce stable metal jet, and is suitable for large angle hit (in narrow apartment house, the incident angle will be larger under the condition of ensuring the transmitting distance, the larger cone angle can greatly improve the puncture rate, and the requirement for effective explosion height is reduced. In the present embodiment, the trigger method is to use the inertia of the firing pin, not the technically mature front fuze, in order to prevent the occurrence of a ricochet (a case where the shell is opened and is not detonated) in the case of a large incident angle.

The tail cone section 3 adopts morse taper, and in the embodiment, the No. 5 morse taper is adopted.

The pressure of the liquid carbon dioxide filled in the closed cavity 8 is 10 MPa-12 MPa, and the fuse 7 can be pressed on the step surface of the step groove 5 by the liquid carbon dioxide with pressure.

An interlayer is arranged in the shell of the warhead 1, and asbestos cloth for preserving heat of liquid carbon dioxide is wrapped in the interlayer (the critical temperature of the carbon dioxide is 31.2 ℃, so that the temperature is guaranteed to be within 31.2 ℃ during storage).

The utility model discloses a fire extinguishing and armor breaking bomb use method is:

the fire-extinguishing armor-breaking bomb is matched with a shoulder-carried launch barrel, the shoulder-carried launch barrel is provided with scales of 10m, 20m and 30m, the launch barrel is internally sealed, people are prevented from being injured by tail flames, and the recoil is improved, but the kinetic energy is smaller, so that the fire-extinguishing armor-breaking bomb is still within the controllable range of human bodies. The front part of the launching tube is provided with a No. 5 Morse taper which is the same as the tail taper section 3 of the armor-breaking bomb, and the launching tube is provided with an electric ignition system. The fire-extinguishing armor-breaking bomb is loaded on a fire-fighting truck at ordinary times and is insulated, and the insulation temperature is controlled below 10 ℃ for the sake of safety.

When the fire extinguishing and armor breaking bomb is used, the tail cone section 3 of the fire extinguishing and armor breaking bomb is screwed into the launching tube, and the fire extinguishing and armor breaking bomb can be aimed and fired after the scale is adjusted. After the fire-extinguishing armor-breaking bomb flies at high speed and hits a door or a thin wall, inertia force causes a firing pin 6 to be separated from a small section of the diameter of the interference-fit stepped groove 5 and to impact a fuse 7 at a high speed, the fuse 7 explodes to generate high heat, liquid carbon dioxide is vaporized and generates huge thrust, according to the door compass effect, the shaped charge cover 4 is compressed into a short and thick metal jet flow to puncture the door or the thin wall at a high speed and leave a large hole, carbon dioxide enters a fire scene from the large hole and extinguishes flames, and then, when a fireman breaks the door again, the flames cannot gush out.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A fire-fighting armor-breaking bomb for fire fighting is characterized by comprising a warhead (1), a cylindrical middle section (2) and a conical tail cone section (3) which are sequentially connected, wherein a liner cover (4) is arranged at the inner head of the warhead (1), a step groove (5) is formed in the middle position of the inner tail of the warhead (1), a firing pin (6) is arranged at the tail of a section with a smaller inner diameter of the step groove (5), and the firing pin (6) is in interference fit with the inner wall surface of the section with the smaller diameter of the step groove (5); a fuse (7) is fixedly arranged at the section with the larger diameter in the step groove (5), the fuse (7) is tightly attached to the step surface of the step groove (5), a circumferential sealing ring is arranged between the fuse (7) and the section with the larger diameter in the step groove (5), and a safety gap is reserved between the firing pin (6) and the fuse (7); liquid carbon dioxide is filled in a closed cavity (8) which is arranged in the bullet (1) and is positioned between the liner (4) and the fuse (7); the tail end of the tail cone section (3) is provided with a propellant powder (10).

2. A fire extinguishing armor-breaking bomb as claimed in claim 1, characterised in that a plurality of stabilizing fins (9) are uniformly arranged circumferentially outside the middle section (2).

3. A fire fighting armor shell according to claim 2, characterized in that the number of stabilizing wings (9) is three.

4. A fire extinguishing armor shell according to claim 1, wherein the liner (4) is a red copper liner with a cone angle of 130 degrees.

5. A fire fighting armor shell according to claim 1, wherein the tail cone section (3) adopts a morse taper.

6. A fire extinguishing armor-breaking bomb as recited in claim 1, characterised in that the pressure of the liquid carbon dioxide filled in the closed chamber (8) is 10-12 MPa.

7. A fire fighting shell-breaking bomb as claimed in any one of claims 1 to 6, characterized in that an interlayer is provided inside the shell of the warhead (1), said interlayer being wrapped with asbestos cloth for keeping liquid carbon dioxide warm.