CN211273254U - Forest fire extinguishing bomb - Google Patents
Forest fire extinguishing bomb Download PDFInfo
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- CN211273254U CN211273254U CN201921933091.9U CN201921933091U CN211273254U CN 211273254 U CN211273254 U CN 211273254U CN 201921933091 U CN201921933091 U CN 201921933091U CN 211273254 U CN211273254 U CN 211273254U
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Abstract
The utility model provides a forest fire extinguishing bomb, adopts to contact to trigger the fuse with the ignition that contacts to earth who installs at the front end of fire extinguishing bomb body, regards the time delay relay who installs at the rear end of fire extinguishing bomb body as the time delay fuse, has adopted "dual fail safe" fire extinguishing bomb explosion, has guaranteed effective release dispersion and the fire extinguishing of fire extinguishing agent after the fire extinguishing bomb air-drop, detonates inefficacy when having avoided the operation, can't reach the fire extinguishing effect, produces "dummy bomb" and causes the potential safety hazard. Through a plurality of tests, the fire extinguishing bomb can be respectively suitable for extinguishing crown fire and surface fire, and a 'dummy bomb' is not generated until now. The fire extinguishing bomb also adopts a split type design, namely, the main bomb body filled with the fire extinguishing agent and the time delay device are separately stored during storage and transportation, and the main bomb body and the time delay device are integrated before throwing, so that the fire extinguishing bomb can be prevented from being detonated by mistake, and the safety is ensured.
Description
Technical Field
The invention relates to the technical field of fire extinguishing bombs, in particular to an air-drop forest fire extinguishing bomb adopting a double-insurance explosion-leading technology.
Background
The 'Green Water Qingshan is the Jinshan Yinshan' forest plays an important role in national economy. However, according to incomplete statistics, the fire 7623 occurs in China all the year, the forest land area is damaged by 94002 hectares, and 196 people are killed due to the disaster. Only between 11 months and 2 months in 2018 and 2019, 354 forest fires occur in the whole country, and the area of the damaged forest is about 731 hectare. The frequent occurrence of forest fires seriously harms the whole society, directly burns forest trees and under-forest plant resources, harms wild animals, causes water and soil loss and air pollution, and threatens the life and property safety of people.
Forest fires are strong in outburst and difficult to extinguish, and once ground force occurs, the forest fires are difficult to reach a fire scene quickly. The armored fire extinguishing vehicle is limited by a field and is not easy to approach a fire point; the large helicopter has high cost and the safe flight is difficult to ensure; the man-sea tactics using the high-pressure water mist fire extinguisher or the fire extinguishing mop not only have low efficiency and are easy to miss the best fire extinguishing opportunity, but also are difficult to ensure the life safety of fire fighters.
Based on the current situation, the forest fire-fighting rescue unmanned aerial vehicle which is flexible, simple to operate, safe and reliable and can realize 'observing and extinguishing integration' is suitable for transportation. The existing air-drop forest fire extinguishing bomb matched with the existing air-drop forest fire extinguishing bomb is mostly filled with water system/water-based fire extinguishing agent, and the throwing effect and the size of the fire extinguishing area are different from those of dry powder fire extinguishing agent; the fixed-height ignition mechanism is independently adopted for crown fire or the grounding ignition mechanism is used for surface fire, and the probability of generating 'dead bullets' is higher. Therefore, the fire extinguishing agent with the best fire extinguishing effect and the triggering mode with higher safety coefficient are selected to realize the efficient fire extinguishing of forest fires by using the airborne fire extinguishing bomb.
The invention with application number 201510536499.2 provides a fire extinguishing bomb for forest crown fire. The intelligent temperature-sensing control device is adopted, and an ignition signal can be output within the range of 0-60m above the crown fire according to the set optimal fire extinguishing height. And a gas generator is also adopted to generate high-pressure gas to directly extrude the water-based fire extinguishing agent to act on the burning crown. The method relies on the ignition of an intelligent control device for fuming, the push rod pushes the shearing part to shear the head sealing plug end for spraying the fire extinguishing agent, and the reliability degree is not high. When the air pressure is insufficient, fire extinguishing agent is remained and wasted, and the fire extinguishing efficiency is not expected.
The invention with the application number of 201510534840.0 provides an efficient water mist fire extinguishing bomb for forest land surface fire. The filling amount in the fire extinguishing bomb is 25L, the ignition mode of landing triggering is adopted, the water system fire extinguishing agent can be put on the surface of the surface fire, a water mist field with the height of about 5 meters and the diameter of about 12 meters is formed, and the surface fire in the range of 10 square meters facing the place can be effectively extinguished. Because the requirement of the fine water mist on the particle size of water is strict, the water-system fire extinguishing agent can achieve better atomization and fire extinguishing effects only by using a nozzle, the accumulation and waste of the fire extinguishing agent can be caused only by an explosion mode, and the expected effect is difficult to achieve.
The invention creation with application number 201610503299.1 provides an onboard water mist forest fire extinguishing bomb. The principle is that the central explosive charge (stepped structure) of the fire extinguishing bomb is utilized to explode to generate columnar fine water mist cloud cluster to extinguish fire. The fire extinguishing bomb shell is made of thin steel plates, the charging module is made of aluminum tubes, and the metal shell is heavy in weight and high in manufacturing cost. In addition, the fire extinguishing effect of water mist generated by explosion is far less than that of dry powder fire extinguishing. In addition, the invention does not explain the fire extinguishing agent filling amount and fire extinguishing area of a single fire extinguishing bomb and the detonation mode.
The invention with the application number of 201821541775 provides a double-ignition forest fire extinguishing bomb. The invention creates a central detonating tube which is internally provided with two sets of detonating devices, each set of detonating device comprises a main explosive tube, a detonator and a delay explosive tube, and only one set of effective detonating devices is needed when the central detonating tube is used. The detonating device has high power, but has high requirements on storage and transportation, and low safety. The fire extinguishing agent mist generated during the explosion of the fire extinguishing bomb is circularly dispersed around under the action of the guide wing plate to cover the fire point. The invention also does not describe the amount of fire extinguishing agent charged and the fire extinguishing area of a single fire extinguishing bomb.
Disclosure of Invention
The invention provides a forest fire extinguishing bomb, which overcomes the defects of low reliability, high probability of generating 'dummy bombs', small fire extinguishing agent coverage area and poor fire extinguishing effect of the existing air-drop forest fire extinguishing bomb for unmanned aerial vehicles.
The invention comprises a ground-contact detonating device, a fire extinguishing bomb body, a time delay relay, an ignition wire and a lead. The fire extinguishing bomb body comprises a fire extinguishing bomb shell, a bomb tail solid body, a tail fin, a propellant powder column and a dry powder extinguishing agent. Wherein, the bullet tail entity is positioned at the rear end of the shell of the fire extinguishing bullet, and the front end of the bullet tail entity is arranged in the shell of the fire extinguishing bullet; four tail wings are uniformly distributed on the circumference of the bullet tail entity. The fire extinguishing shell is filled with dry powder fire extinguishing agent, the propellant powder column is arranged in the center of the fire extinguishing shell, the axial direction of the propellant powder column is parallel to the direction of the fire extinguishing shell body, and the position of the propellant powder column is fixed by the dry powder fire extinguishing agent filled around the fire extinguishing shell. The ground-contacting detonating device is arranged in the center of the front end face of the fire extinguishing bomb body. The delay relay is arranged in the center of the end face of the rear end of the fire extinguishing bomb body. One end of the wire is communicated with a button contact positioned at the front end of the fire extinguishing bullet shell, and the other end of the wire is communicated with the time delay relay. One end of the ignition wire is connected with the explosive column, and the other end of the ignition wire is connected with the time delay relay.
The earth-contacting squib includes a button cap, a button base, and button contacts. The button base is positioned in a through hole in the center of the front end face of the fire extinguishing bomb shell; the button cap is positioned outside the fire extinguishing bullet shell and is bonded in the center of the front end face of the button base; the button contact is positioned in the fire extinguishing bomb shell and is bonded on the end face of the rear end of the button base.
The button base is composed of a round baffle and a square connecting block. The connecting block is positioned in the center of the inner side surface of the baffle, and the shape size of the connecting block is matched with the shape size of a central through hole in the front end surface of the fire extinguishing bomb shell.
The front end of the fire extinguishing bullet tail body is a connecting section, and the diameter of the connecting section is the same as the inner diameter of the rear end of the fire extinguishing bullet shell; the rear section of the bullet tail solid is a tail wing installation section; four axial tail mounting grooves are uniformly distributed on the outer circumferential surface of the tail mounting section. And the bullet tail entity connecting section and the tail wing installation section are in conical transition. And a square groove for mounting the time delay relay is formed in the center of the end surface of the empennage mounting section. And an axial through hole is formed in the center in the bullet tail entity and is used for placing a lead and an ignition wire which are connected with the ground-contact ignition device, the explosive column and the time delay relay.
After the bullet tail entity is loaded into the fire extinguishing bullet shell, a foaming agent is used for filling and fixedly connecting the bullet tail entity connecting section with the fire extinguishing bullet shell.
The invention has the beneficial effects that:
the shell of the fire extinguishing bomb is formed by blow molding of polystyrene foam, the material is light in weight, good in mechanical strength and water resistance and can be recycled, and the light shell can effectively improve the loading amount of a fire extinguishing agent and enhance the fire extinguishing efficiency. The shell of the fire extinguishing bomb is filled with dry powder fire extinguishing agent, the fire extinguishing agent is exploded after the fire explosive column is ignited, and the effective dispersion area of the fire extinguishing agent of a single fire extinguishing bomb with the filling amount of 15kg can reach 50m through tests2The accumulation of the fire extinguishing agent is very little.
The fire extinguishing bomb adopts a double-insurance fire extinguishing bomb explosion guiding technology of dual explosion guiding of a contact trigger fuse and a delay fuse, so that effective release dispersion and fire extinguishing of a fire extinguishing agent after the fire extinguishing bomb is airdropped are ensured, detonation failure during operation is avoided, a fire extinguishing effect cannot be achieved, and potential safety hazards caused by 'dummy bombs' are generated. Through a plurality of tests, the fire extinguishing bomb can be respectively suitable for extinguishing crown fire and surface fire, and a 'dummy bomb' is not generated until now. The fire extinguishing bomb also adopts a split type design, namely, the main bomb body filled with the fire extinguishing agent and the time delay device are separately stored during storage and transportation, and the main bomb body and the time delay device are integrated before throwing, so that the fire extinguishing bomb can be prevented from being detonated by mistake, and the safety is ensured.
In conclusion, the dual-explosion-conducting air-drop forest fire extinguishing bomb adopting the polystyrene foam as the shell can improve the dispersion area of the fire extinguishing agent, greatly reduce the potential safety hazard existing in error explosion or non-explosion, and is a novel forest fire extinguishing bomb which is efficient, reliable and safe.
Drawings
FIG. 1 is an isometric view of a forest fire extinguishing bomb of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is an exploded view of a touchdown initiator;
FIG. 5 is a schematic view of the fire extinguishing cartridge housing;
fig. 6 is an exploded view of the cooperation of the projectile tail entity with the tail and the time delay relay.
In the figure: 1. a ground contacting detonator; 2. a fire extinguishing bomb body; 3. a tail of the bullet; 4. a button cap; 5. a button base; 6. a button contact; 7. a fire extinguishing cartridge housing; 8. a propellant charge; 9. a dry powder extinguishing agent; 10. a projectile tail entity; 11. a tail wing; 12. a time delay relay; 13. a wire; 14. an ignition wire.
Detailed Description
This embodiment is an air-drop formula forest fire extinguishing bomb of adoption double insurance explosion-leading technique, includes: the fire extinguishing bomb comprises a ground-contacting detonating device 1, a fire extinguishing bomb body 2, a bomb tail 3, a time delay relay 12, an ignition wire 14 and a conducting wire 13.
The fire extinguishing bomb body 2 comprises a fire extinguishing bomb shell 7, a bomb tail entity 10, a tail wing 11, a propellant charge 8 and a dry powder extinguishing agent 9. Wherein, the tail entity 10 is positioned at the rear end of the shell of the fire extinguishing bomb, and the front end of the tail entity is arranged in the shell of the fire extinguishing bomb; four tail wings are uniformly distributed on the circumference of the bullet tail entity. The inner cavity of the fire extinguishing bomb shell 7 is filled with dry powder extinguishing agent 9, the gunpowder column 8 is arranged at the central position of the fire extinguishing bomb shell 4, the axial direction is parallel to the direction of the body of the fire extinguishing bomb, and the position of the fire extinguishing bomb is fixed by the dry powder extinguishing agent 9 filled around. The ground-contacting explosive device 1 is arranged in the center of the front end face of the fire extinguishing bomb body 2. The time delay relay 12 is installed in the center of the rear end face of the fire extinguishing bomb body. One end of the lead 13 is communicated with the button contact 6 positioned at the front end of the fire extinguishing bullet shell 7, and the other end is communicated with the time delay relay. One end of the ignition wire 14 is connected with the explosive column 8, and the other end is connected with the time delay relay 12.
The earth-contacting squib 1, i.e., the push-button switch, includes a push-button cap 4, a push-button base 5, and a push-button contact 6. Wherein the button base 5 is positioned in a through hole in the center of the front end surface of the fire extinguishing bomb shell 7; the button cap 4 is positioned outside the fire extinguishing shell and is adhered to the center of the front end face of the button base 5; the button contact 6 is positioned in the shell of the fire extinguishing bomb and is adhered to the rear end face of the button base 5. The button base 5 is composed of a round baffle plate and a square connecting block. The connecting block is positioned in the center of the inner side surface of the baffle, and the external dimension of the connecting block is matched with the external dimension of a central through hole in the front end surface of the fire extinguishing bomb shell 7.
The button cap 4 at the front end of the grounding detonation device 1 is in a normally open state, the button cap 4 is bonded with the button base 5, the button base 5 is bonded with the button contact 6, and the button base 5 is clamped into a through hole at the front end of the shell 7 of the fire extinguishing bomb. The lead 13 from the earth-contacting detonator 1 is connected to a delay relay 12 located at the tail of the fire extinguishing bullet.
The fire extinguishing bomb shell 7 is formed by blow molding of polystyrene foam; explosive is filled in the explosive column 8 and is detonated through an ignition wire during action, and the ignition wire 14 is led out from a small hole at the rear end of the explosive column 8 and is connected with the tail delay relay 12.
The front end of the fire extinguishing bullet tail body 10 is a connecting section, and the diameter of the connecting section is the same as the inner diameter of the rear end of the fire extinguishing bullet shell 7; after the bullet tail entity is loaded into the fire extinguishing bullet shell, a foaming agent is used for filling and fixedly connecting the connection section of the bullet tail entity with the fire extinguishing bullet shell. The rear section of the bullet tail solid is a tail wing installation section; four axial tail mounting grooves are uniformly distributed on the outer circumferential surface of the tail mounting section. And the bullet tail entity connecting section and the tail wing installation section are in conical transition. And a square groove for mounting the time delay relay 12 is formed in the center of the end surface of the empennage mounting section. In the center of the bullet tail body 10, there is an axial through hole for placing a lead 13 and an ignition wire 14 which are connected with the grounding ignition device 1, the explosive column 8 and the delay relay 12.
Four tail wings 11 are all wing plates made of the wood of the tung tree. The material is light in weight and environment-friendly, and is inserted into and fixed to the tail mounting groove on the outer surface of the cylinder at the rear end of the bullet tail entity 10. The time delay relay 12 is embedded and bonded in a square groove hollowed in the bottom surface of the cylinder at the rear end of the bullet tail entity 8.
The delay relay adopts the existing product.
When in use, the button cap of the grounding detonation device 1 is in a normally open state. After the unmanned aerial vehicle carrying embodiment arrives at the preset height and aims at the launching position, the fire extinguishing bomb is thrown in, and the fire extinguishing bomb is made to move to a fire scene in a free-falling state. Meanwhile, a gravity trigger switch fixed on the unmanned aerial vehicle is triggered, and a time delay relay starts timing; the timing is cut off, and the fire extinguishing bomb is detonated by the current generated by the delay relay. If the delay relay breaks down in the air or falls to the ground in advance after untimed completion, the grounding detonating device at the head of the fire extinguishing bomb is triggered to explode, and therefore the double-insurance detonating effect is achieved.
Claims (5)
1. A forest fire extinguishing bomb is characterized by comprising a ground-contact detonating device, a fire extinguishing bomb body, a time delay relay, an ignition wire and a conducting wire; the fire extinguishing bomb body comprises a fire extinguishing bomb shell, a bomb tail solid body, a tail fin, a propellant powder column and a dry powder extinguishing agent; wherein, the bullet tail entity is positioned at the rear end of the shell of the fire extinguishing bullet, and the front end of the bullet tail entity is arranged in the shell of the fire extinguishing bullet; four tail wings are uniformly distributed on the circumference of the bullet tail entity; the fire extinguishing bomb shell is characterized in that a dry powder fire extinguishing agent is filled in an inner cavity of the fire extinguishing bomb shell, a propellant charge is arranged at the center of the fire extinguishing bomb shell, the axial direction of the propellant charge is parallel to the direction of a bomb body of the fire extinguishing bomb, and the position of the propellant charge is fixed by the dry powder fire extinguishing agent filled around the fire extinguishing bomb shell; the ground-contact detonating device is arranged in the center of the end face of the front end of the fire extinguishing bomb body; the delay relay is arranged in the center of the end face of the rear end of the fire extinguishing bomb body; one end of the wire is communicated with a button contact positioned at the front end of the fire extinguishing bomb shell, and the other end of the wire is communicated with the time delay relay; one end of the ignition wire is connected with the explosive column, and the other end of the ignition wire is connected with the time delay relay.
2. A forest fire extinguishing bomb as claimed in claim 1, characterised in that the earth-contacting detonation device comprises a button cap, a button base and button contacts; the button base is positioned in a through hole in the center of the front end face of the fire extinguishing bomb shell; the button cap is positioned outside the fire extinguishing bullet shell and is bonded in the center of the front end face of the button base; the button contact is positioned in the fire extinguishing bomb shell and is bonded on the end face of the rear end of the button base.
3. A forest fire extinguishing bomb as claimed in claim 2, characterised in that the button base consists of a circular baffle and a square connecting block; the connecting block is positioned in the center of the inner side surface of the baffle, and the shape size of the connecting block is matched with the shape size of a central through hole in the front end surface of the fire extinguishing bomb shell.
4. A forest fire extinguishing bomb as claimed in claim 1, characterised in that the front end of the tail body is a connecting section with the same diameter as the internal diameter of the rear end of the shell of the fire extinguishing bomb; the rear section of the bullet tail solid is a tail wing installation section; four axial tail wing installation grooves are uniformly distributed on the outer circumferential surface of the tail wing installation section; the bullet tail entity connecting section and the tail wing mounting section are in conical transition; a square groove for mounting a time delay relay is formed in the center of the end face of the tail mounting section; and an axial through hole is formed in the center in the bullet tail entity and is used for placing a lead and an ignition wire which are connected with the ground-contact ignition device, the explosive column and the time delay relay.
5. A forest fire extinguishing bomb as claimed in claim 1, characterised in that after the tail body has been loaded into the shell of the fire extinguishing bomb, the connection between the tail body and the shell of the fire extinguishing bomb is filled and secured by means of a foaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933091.9U CN211273254U (en) | 2019-11-11 | 2019-11-11 | Forest fire extinguishing bomb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933091.9U CN211273254U (en) | 2019-11-11 | 2019-11-11 | Forest fire extinguishing bomb |
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| Publication Number | Publication Date |
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| CN211273254U true CN211273254U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921933091.9U Active CN211273254U (en) | 2019-11-11 | 2019-11-11 | Forest fire extinguishing bomb |
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| CN (1) | CN211273254U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604210A (en) * | 2020-12-14 | 2021-04-06 | 湖北航天飞行器研究所 | Forest aviation fire extinguishing bomb thrown through gravity and using method |
| CN112642074A (en) * | 2020-12-24 | 2021-04-13 | 苏州信卓胜电子科技有限公司 | Fire extinguishing bomb based on three-axis acceleration sensor and control method |
| CN112915422A (en) * | 2021-03-04 | 2021-06-08 | 西北工业大学 | Solid fire extinguishing bomb fire-fighting system |
-
2019
- 2019-11-11 CN CN201921933091.9U patent/CN211273254U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604210A (en) * | 2020-12-14 | 2021-04-06 | 湖北航天飞行器研究所 | Forest aviation fire extinguishing bomb thrown through gravity and using method |
| CN112642074A (en) * | 2020-12-24 | 2021-04-13 | 苏州信卓胜电子科技有限公司 | Fire extinguishing bomb based on three-axis acceleration sensor and control method |
| CN112915422A (en) * | 2021-03-04 | 2021-06-08 | 西北工业大学 | Solid fire extinguishing bomb fire-fighting system |
| CN112915422B (en) * | 2021-03-04 | 2022-05-31 | 西北工业大学 | Solid fire extinguishing bomb fire-fighting system |
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