SUMMERY OF THE UTILITY MODEL
To solve or at least alleviate at least one of the above technical problems, the present disclosure provides a safety forest fire extinguishing bomb.
According to one aspect of the disclosure, a safety forest fire extinguishing bomb comprises:
the fire extinguishing bomb comprises a bomb body and a cutting rope, wherein a space enclosed by the bomb body contains a fire extinguishing agent; the cutting rope is embedded in the bullet shell body/is fixedly connected with the bullet shell body and used for breaking the bullet shell body;
a caudal vertebra connected with the projectile body; and the number of the first and second groups,
and the ignition assembly is arranged in the tail cone, is connected with the cutting rope and is used for igniting the cutting rope.
According to at least one embodiment of the present disclosure, the ignition assembly includes a first ignition member, a second ignition member, and a delay portion;
the first ignition piece is connected with an airplane power supply and the time delay part and used for starting the time delay part after a fire extinguishing bomb is thrown in;
the second ignition piece connects the cutting rope and the delay part, and the delay part is used for exciting the second ignition piece after the set delay time is reached, so that the second ignition piece ignites the cutting rope to break the projectile body.
According to at least one embodiment of the present disclosure, the delay portion is installed in the caudal vertebra, the outward end of the caudal vertebra is provided with a blocking cover for sealing the delay portion, and the blocking cover is provided with a through hole suitable for the first ignition piece to pass through.
According to at least one embodiment of the present disclosure, the blocking cover is made of a rubber material or a metal material.
According to at least one embodiment of the present disclosure, the delay part includes a battery and a delay relay; the aircraft power supply is connected to the delay relay through the first ignition piece, so that the delay relay is kept at a high level; after the fire extinguishing bomb is thrown, the first ignition piece is disconnected with the airplane power supply, and the delay relay obtains a low-level trigger instruction; the battery supplies power to the delay relay.
According to at least one embodiment of the present disclosure, the projectile body further includes a lifting lug disposed on an outer wall of the projectile body for connection with an aircraft pylon.
According to at least one embodiment of this disclosure, the lug is 2, lies in the same side of shell magazine.
According to at least one embodiment of the present disclosure, the outer wall of the tail cone is fixedly provided with a tail wing, and the tail wing is distributed in a cross shape on the outer wall of the tail cone.
According to at least one embodiment of the present disclosure, the cartridge case is made of cast iron or aluminum alloy.
According to at least one embodiment of the present disclosure, the fire extinguishing agent is one of a dry powder fire extinguishing agent, an ultra-fine dry powder fire extinguishing agent, or a water soluble fire extinguishing agent.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Aiming at the problems that the mode that the existing forest fire extinguishing bomb adopts explosive or black powder to explode the bomb body is very dangerous and has high danger coefficient, according to one aspect of the disclosure, a safety type forest fire extinguishing bomb is provided, referring to a structural schematic diagram of an exemplary embodiment of the forest fire extinguishing bomb shown in fig. 1, the safety type forest fire extinguishing bomb comprises a bomb body 1, a tail cone 2 and an ignition assembly. The projectile body 1 comprises a projectile body 11 and a cutting rope 12, wherein the projectile body 11 encloses a closed space, and the closed space contains the fire extinguishing agent 5. It should be noted that the material of the bullet housing 11 is not the only one, and in this embodiment, the bullet housing 11 is made of an aluminum alloy material; those skilled in the art may also substitute cast iron for this material. The cutting rope 12 is embedded in the bullet shell 11, and the cutting rope 12 is fixedly connected with the bullet shell 11. In one attachment, the cutting cord 12 may be spot welded into the cartridge housing 11 to ensure that the cutting cord 12 is in sufficient contact with the cartridge housing 11. The cutting cord 12 is composed of a seamless metal shell and a charge column wrapped in the seamless metal shell, for example, the metal shell and the charge are formed, the metal shell wraps the charge, the cross section of the metal shell is designed according to the energy-gathering effect to form a certain cross section shape, the shape is mostly V-shaped, after the charge is exploded, a large amount of high-temperature and high-pressure gas is released, extremely high directional pressure is generated instantaneously, shock waves generated by expansion gas move outwards along the axial direction and generally follow the shape of the cross section of the cutting cord, and the shock waves are ejected from the cutting cord in the V-shaped opening direction. Part of explosive energy is converted into kinetic energy of the crushed metal liner, particles of the metal liner which obtain the kinetic energy do high-speed motion along the normal direction of the energy-gathering groove and collide on a symmetrical plane to form high-speed and continuous metal jet flow, the head speed of the metal jet flow which is molten under the high pressure of explosion is more than 3000 m/s-5000 m/s, the metal jet flow has high energy, metal materials with certain thickness can be cut and separated, a seamless metal shell is melted and broken, and accordingly the contact bullet shell body 11 can be broken. The tail cone 2 is connected with the bullet body 1, and the tail cone 2 can be integrally formed with the bullet shell body 11 or can be connected with the bullet shell body 11 after being formed separately. The components can be mounted in the caudal vertebra 2. An ignition assembly is disposed within the tail cone 2 and is coupled to the cutting cord 12 for igniting the cutting cord 12. To ensure a smooth blasting of the projectile 1, the cutting cords 12 may be distributed around the projectile body 11. In this embodiment, in the cross-sectional direction shown in fig. 2, the cutting rope 12 is disposed around the cartridge case 11, and the dispersion effect of the fire extinguishing agent 5 after blasting is good.
The forest fire extinguishing bomb disclosed by the invention has the advantages that the bomb shell 11 is broken through the cutting rope 12, no explosive detonator or explosive substance exists in the forest fire extinguishing bomb, the accidental injury of personnel is avoided, the safety is high, and the forest fire extinguishing bomb is suitable for long-term storage. The cutting cord 12 has a better safety than the explosive or black powder of the prior art. The reason for this is that: the two modes cause different bullet fracture mechanisms, mainly embodied in the traditional explosive or black powder, the bullet fractures through the energy generated by explosion, the produced bullet fragments have high speed and high power, secondary disasters are easy to produce, and the life of a human body can be endangered under extreme conditions; and the mode of cutting the rope 12 is adopted, the rupture of the bullet body is caused by high-temperature and high-pressure gas generated by the cutting rope, so that the contact part of the bullet shell body 11 and the cutting rope 12 is cracked, the explosion cannot be caused, the speed of the generated fragments is low, and secondary disasters are not easy to generate. Forest fire extinguishing bomb is carried by the carrier, and when the carrier was empty to the scene of a fire, the forest fire extinguishing bomb was released on certain height, ignition assembly passed through time delay portion ignites the cutting cable makes fire extinguishing bomb explode on the regional sky that catches fire, and then makes the diffusion of fire extinguishing agent in the shell of bullet, such mode has following advantage: firstly, the fire extinguishing agent has good diffusivity, which is beneficial to improving the utilization rate of the fire extinguishing agent; compared with the traditional fire extinguishing agent supplement scheme, the loading is convenient and quick, and the fire extinguishing efficiency of the carrier can be improved; and thirdly, the delay forest fire extinguishing bomb with the cutting rope is provided with a delay part and is detonated by adopting a delay fuse mode, the throwing height can be fixed because the height of the airplane is known and the landing acceleration of the bomb body is known, and the detonation height is controlled by adopting the delay fuse mode, so that the delay forest fire extinguishing bomb has the advantages of good economy and high reliability, and the operation technical difficulty of a user is low.
In one embodiment of the present disclosure, the ignition assembly may include a first ignition member 23, a second ignition member 22, and a delay portion 21. The second ignition part 22 connects the cutting rope 12 with the delay part 21, and the delay part 21 is used for activating the second ignition part 22 after the set delay time is reached, so that the second ignition part 22 ignites the cutting rope 12; the first ignition piece 23 connects an airplane power supply with the delay part 21, the airplane power supply provides a high level for the delay part 21, so that the delay part is in a standby state, after a fire extinguishing bomb is thrown in, the bomb body falls, the first ignition piece 23 is disconnected with the airplane power supply, the delay part obtains a low level trigger instruction, counting down is started, and after a set delay time is reached, the second ignition piece 22 is excited, so that the second ignition piece 22 ignites the cutting rope 12. It should be noted that the ignition assembly is not designed solely for the purpose of successfully detonating the cutting cord 12 at the predetermined time. In this embodiment, the second ignition device 22 may be an inner ignition wire, and the first ignition device 23 may be an outer ignition wire. One end of the inner ignition wire is connected with the cutting rope 12, and the other end of the inner ignition wire is connected with the time delay part 21 and is suitable for igniting the cutting rope 12; one end of the outer firing cable is exposed out of the caudal vertebra 2, and the other end of the outer firing cable is connected with the time delay part 21 and is suitable for starting the time delay part 21. The outer firing line will typically start working when the projectile 1 is launched by a carrier.
In one embodiment of the present disclosure, the delay unit 21 may employ a delay switch and a battery, and the delay switch is a delay relay. The delay switch can adopt a commercially available delay relay. The delay relay is in a standby state when receiving the high level signal and is triggered after receiving the low level signal. After triggering, the delay relay is kept off within a set delay time, the delay relay is closed and conducted after the delay time is reached, and the current output after conduction ignites the second ignition part 22; the second firing element 22 then initiates detonation of the cutting cord. The battery can be a common 9V alkaline square battery, and the battery is connected to the time delay relay to supply power to the time delay relay so as to output current after the time delay relay is closed. The airplane power supply is connected to the time delay relay through the first ignition piece 23, so that the time delay relay keeps a high level; after the fire extinguishing bomb is thrown, the first ignition piece is disconnected with the airplane power supply, the level signal received by the delay relay is changed from a high level to a low level, the delay relay is triggered to start working after obtaining the low level signal, the excitation process is executed, the cutting rope is exploded, and the bomb body is broken.
In an embodiment of this disclosure, for the guarantee the sealing of time delay portion 21 guarantees its switching performance, and the forest fire extinguishing bomb still is provided with and is used for sealing the blanking cover 3 of time delay portion 21, 3 covers of blanking cover are established or are set up the tip of caudal vertebra 2, just be equipped with on the blanking cover 3 and be suitable for the through-hole that second ignition 23 passed. In this embodiment, the plug 3 is made of rubber. As an alternative implementation, the blocking cover 3 may also be made of a metal material.
In one embodiment of the present disclosure, for the convenience of airborne carrying, the projectile body 1 further comprises a lifting lug 13, wherein the lifting lug 13 is disposed on the outer wall of the projectile body 11 and is adapted to be connected with an aircraft pylon. The design requirement of the lifting lug 13 meets the design standard of the II-th weight-level lifting lug of a lifting lug type suspension object in GJB 1C-2006. In this embodiment, the number of the lifting lugs is 2, and the lifting lugs are located on the same side of the bullet shell 11.
In one embodiment of the present disclosure, in order to maintain the flight stability of the projectile body 1 after being released and to facilitate installation, the forest fire extinguishing bomb further comprises a tail wing 4 fixed on the outer wall of the tail cone 2, wherein the tail wing 4 is distributed in a cross shape on the outer wall of the tail cone 2. As shown in fig. 3, the tail fins 4 are distributed in a cross shape on the plane where the lifting lugs 13 are located.
In one embodiment of the present disclosure, the fire extinguishing agent 5 carried in the shell 11 of the forest fire extinguishing bomb can be selected from various options, and the fire extinguishing agent 5 can be one of a dry powder fire extinguishing agent, an ultra-fine dry powder fire extinguishing agent or a water-soluble fire extinguishing agent. In this embodiment, the fire extinguishing agent 5 is a dry powder fire extinguishing agent.
The working process of the delay forest fire extinguishing bomb comprises the following steps: the forest fire extinguishing bomb is carried by a carrier, flies to a designated fire field and is thrown in the air, after the fire extinguishing bomb is separated from the carrier, the bomb body falls, the first ignition piece 23 is disconnected from the aircraft power supply, the delay part obtains a low level trigger instruction, the delay part 21 is further excited, countdown is started, after a specific time, an internal ignition line and a cutting rope are ignited to break the bomb body, the fire extinguishing bomb belongs to free fall motion in the vertical direction when the aircraft height is known, the falling height of the fire extinguishing bomb can be accurately calculated according to the falling time, therefore, the specific time can be set, the delay part 21 is ignited at the height of 10-20 meters from the ground, and the internal ignition line is ignited. That is, when the projectile body 1 is 10-20 m away from the ground, the delay part 21 is ignited to ignite the internal ignition wire, so that the cutting rope 12 distributed around the projectile body 1 works to cause the projectile body 1 to break, and the fire extinguishing agent 5 loaded in the projectile body falls freely and is spread to a fire area, thereby achieving the purpose of fire extinguishing.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.