Bird repelling projectile employing plasma ignition

Abstract

The application relates to a bird repelling bomb ignited by plasma, which comprises a main shell (11) provided with a closed explosive chamber filled with a first explosive (14), an ignition hole communicated with the explosive chamber is formed in the main shell (11), a conductive metal nail (15) is arranged in the ignition hole, the metal nail (15) seals the ignition hole, one end of the metal nail (15) is in contact with the first explosive (14), and the other end of the metal nail (15) is exposed outside the main shell (11), and the metal nail (15) is used for being in contact with a plasma igniter when the bird repelling bomb is ignited.

Description

Technical Field

[0001] This application belongs to the field of fireworks technology and relates to a bird deterrent projectile, and more particularly to a bird deterrent projectile using plasma ignition. The bird deterrent projectile is mainly used to drive away birds in the airspace above specific places such as airports. Background Technology

[0002] To prevent aircraft from colliding with birds during takeoff and landing, airport ground operators use bird deterrents to scare away birds in the air above the airport. Existing bird deterrents have an ignition hole in the casing to ignite the internal explosive. An ignition fuse or ignition powder is placed in the ignition hole. After the ignition fuse or ignition powder is ignited, the burning of the ignition fuse or ignition powder leaves the ignition hole empty. When the gunpowder explodes, it will spray out from the ignition hole, causing the pressure generated by the explosion to leak out through the ignition hole, reducing the explosive effect of the gunpowder. In addition, the sprayed flame can also burn the ignition device. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this application is to provide a bird deterrent projectile that uses plasma ignition, which is low in cost and does not produce pressure relief, high-temperature flame ejection, or ablation of the ignition device, thus extending the life of the launching equipment.

[0004] This application is achieved through the following technical solution.

[0005] This technical solution provides a bird deterrent projectile using plasma ignition, comprising a main shell, wherein the main shell has a sealed chamber for filling a first explosive, and an ignition hole communicating with the explosive chamber is provided on the main shell. A conductive metal pin is provided inside the ignition hole, the metal pin sealing the ignition hole, one end of the metal pin contacting the first explosive, and the other end protruding outside the main shell, the metal pin being used to contact the plasma igniter when the bird deterrent projectile is ignited.

[0006] Compared with existing technologies, the ignition port of the bird deterrent projectile in this technical solution remains closed during the explosion process, so that the explosion will not cause pressure relief, and thus no high-temperature flame will be ejected through the ignition port or ablate the ignition device, resulting in a longer lifespan for the launching equipment.

[0007] In one or more embodiments of this technical solution, the metal nail is an iron nail, a copper nail, or an aluminum nail.

[0008] In one or more embodiments of this technical solution, the end of the metal nail that contacts the first explosive is provided with a conical tip, which is inserted into the interior of the first explosive. Since plasma consists of electron-carrying particles, based on the principle of tip discharge, the plasma will concentrate at the tip and generate a high-temperature electric arc flame, which can instantly ignite the first explosive.

[0009] In one or more embodiments of this technical solution, the metal nail has a large head at the end furthest from the first explosive, and the end face of the head is used to contact the plasma igniter. Thus, the head increases the contact area with the plasma igniter.

[0010] In one or more embodiments of this technical solution, a projectile body is disposed inside or above the main shell, and the projectile body is filled with a second explosive; the projectile body and the main shell together form the explosive cavity, and the second explosive in the projectile body is connected to the first explosive through a ignition fuse.

[0011] In one or more embodiments of this technical solution, the main shell is a cylindrical structure with an open top and hollow interior, the projectile is disposed inside the main shell, and the upper opening is sealed with a sealing filler.

[0012] In one or more embodiments of this technical solution, the sealing filler includes one or more combinations of a paraffin layer, an adhesive layer, or a sealing powder layer.

[0013] In one or more embodiments of this technical solution, the ignition hole is located at the bottom of the main housing.

[0014] In one or more embodiments of this technical solution, the projectile includes an inner cylinder, the interior of which is filled with the second explosive, a through hole is provided at the bottom of the inner cylinder, a ignition wire is disposed in the through hole, one end of the ignition wire is in contact with the second explosive, and the other end is in contact with the first explosive.

[0015] Another aspect of this application is to provide an ignition method for a bird deterrent projectile using plasma ignition, wherein the metal pin of the bird deterrent projectile is brought into contact with the electrode of a plasma igniter, the metal pin introduces the high voltage generated by the plasma igniter into the interior of the main casing, and the metal pin generates a plasma jet to ignite the first explosive.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of the bird deterrent projectile shown in an example of this application.

[0019] Figure 2 This is a cross-sectional structural schematic diagram of a bird-repelling projectile shown in one embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 11-Main shell; 111-Ignition hole; 12-Projectile body; 121-Inner cylinder; 122-Second explosive; 123-Ignition fuse; 13-Sealing filler; 14-First explosive; 15-Metal nail; 151-Tip; 152-Head. Detailed Implementation

[0021] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown in the figure, a bird deterrent projectile using plasma ignition in this embodiment includes a main shell 11 with a hollow upper opening. Inside the main shell 11, from the upper opening inward, there are a sealing filler 13, a projectile body 12, and a first explosive 14. A cavity is formed between the main shell 11 and the projectile body 12. The first explosive 14 is filled in the cavity. The bottom of the main shell 11 is provided with an ignition hole 111 that communicates with the cavity. Inside the ignition hole 111, there is a conductive metal nail 15 that seals the ignition hole. One end of the metal nail 15 is in contact with the first explosive 14, and the other end is exposed outside the main shell 11.

[0024] Thus, the projectile 12 is located inside the main casing 11. The projectile 12 is launched from the upper opening of the main casing 11 by igniting the first explosive 14 below. After taking off, the projectile 12 detonates. The first explosive 14 acts as a propellant. During the explosion of the bird deterrent projectile, its ignition port 111 remains closed, so that the explosion will not cause pressure relief. Therefore, there will be no high-temperature flames spraying out through the ignition port 111 and burning the ignition device, which will extend the life of the launching equipment.

[0025] It should be noted that in other embodiments, the bird-repelling projectile may also be without a projectile body 12 and be of the type that is directly detonated, and the first explosive 14 is a gunpowder with a bird-repelling effect.

[0026] In this embodiment, the main shell 11 has a cylindrical structure with an open top and a closed bottom. An ignition hole 111 is provided in the middle of the bottom wall of the main shell 11. The shape of the ignition hole 111 is adapted to the metal nail 15. The metal nail 15 can be made of iron, copper or aluminum. Iron nail is the best choice because it is low in cost.

[0027] In this embodiment, the end of the metal nail 15 that contacts the first explosive charge 14 has a conical tip 151, which is inserted into the interior of the first explosive charge 14. Since plasma consists of electron-carrying particles, based on the principle of tip discharge, the plasma will concentrate at the tip 151 and generate a high-temperature electric arc flame, which can instantly ignite the first explosive charge 14. The other end of the metal nail 15 away from the first explosive charge 14 has a wide head 152. The end face of the head 152 is used to contact the plasma igniter, thereby increasing the contact area with the plasma igniter.

[0028] In this embodiment, the projectile 12 includes an inner cylinder 121 and a second explosive 122 filled in the inner cylinder 121. The second explosive 122 is connected to the first explosive 14 through a ignition fuse 123. The second explosive 122 is a pure detonating explosive, or an explosive with an odorant, or an explosive with a colored smoke, and mainly serves to repel birds.

[0029] In this embodiment, the main shell 11 is integrally injection molded from plastic, but it can also be made of metal. The inner cylinder 121 is made of paper. When the second explosive 122 detonates, the inner cylinder 121 breaks into fragments. The inner cylinder 121 is cylindrical and placed inside the main shell 11. The upper end of the inner cylinder 121 is open to facilitate the loading of the second explosive 122. After the second explosive 122 is loaded, the opening is closed.

[0030] In this embodiment, the bottom of the inner cylinder 121 is provided with a through hole, and the ignition lead 123 is disposed in the through hole. One end of the ignition lead 123 is connected to the second explosive 122, and the other end is connected to the first explosive 14.

[0031] In this embodiment, after the inner cylinder 121 filled with the second explosive 122 is inserted into the main shell 11, the upper opening needs to be sealed with a sealing filler 13. The sealing filler 13 covers the projectile 12. The sealing filler 13 is usually made of one or more of the following: a paraffin layer, an adhesive layer, or a sealing powder layer. It is easily punctured by the projectile 12 during launch.

[0032] In this embodiment, the bird-repelling projectile is ignited by placing the projectile into the launching device, so that the metal nail 15 of the projectile comes into contact with the electrode of the plasma igniter of the launching device. The metal nail 15 introduces the high voltage generated by the plasma igniter into the interior of the main shell 11, and the metal nail 15 generates a plasma jet to ignite the first explosive 14.

[0033] It should be noted that plasma igniters are existing technology, and commercially available plasma igniters can be used to ignite the bird deterrent projectiles in this embodiment. The structure and working principle of plasma igniters are well known to those skilled in the art, and will not be described in detail in this embodiment.

[0034] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A bird-repelling projectile employing plasma ignition, characterized in that, Includes a main shell (11), which has a sealed chamber for filling a first explosive (14). The main shell (11) has an ignition hole that communicates with the explosive chamber. The ignition hole has a conductive metal nail (15) inside. The metal nail (15) seals the ignition hole. One end of the metal nail (15) is in contact with the first explosive (14), and the other end is exposed outside the main shell (11). The metal nail (15) is used to contact the plasma igniter when the bird deterrent is ignited.

2. The bird deterrent projectile employing plasma ignition according to claim 1, characterized in that, The metal nail (15) is an iron nail, a copper nail, or an aluminum nail.

3. The bird deterrent projectile employing plasma ignition according to claim 1, characterized in that, The metal nail (15) has a conical tip (151) at the end that contacts the first explosive (14), and the tip (151) is inserted into the interior of the first explosive (14).

4. The bird deterrent projectile employing plasma ignition according to claim 1, characterized in that, The metal nail (15) has a large head (152) at the other end away from the first explosive (14), and the end face of the head (152) is used to contact the plasma igniter.

5. The bird deterrent projectile employing plasma ignition according to claim 1, characterized in that, It also includes a projectile (12) located inside or above the main shell (11), the projectile (12) being filled with a second explosive (122); the projectile (12) and the main shell (11) together form the explosive cavity, and the second explosive (122) of the projectile (12) is connected to the first explosive (14) through a ignition fuse (123).

6. The bird deterrent projectile employing plasma ignition according to claim 5, characterized in that, The main shell (11) is a cylindrical structure with an open top and a hollow interior. The projectile (12) is located inside the main shell (11), and the upper opening is sealed with a sealing filler (13).

7. The bird deterrent projectile employing plasma ignition according to claim 6, characterized in that, The sealing filler (13) includes one or more combinations of a paraffin layer, an adhesive layer, or a sealing powder layer.

8. The bird deterrent projectile employing plasma ignition according to claim 5, characterized in that, The ignition hole (111) is located at the bottom of the main housing (11).

9. The bird deterrent projectile employing plasma ignition according to claim 5, characterized in that, The projectile (12) includes an inner cylinder (121), the inner cylinder (121) is filled with the second explosive (122), the bottom of the inner cylinder (121) is provided with a through hole, the ignition lead (123) is provided in the through hole, one end of the ignition lead (123) is in contact with the second explosive (122), and the other end is in contact with the first explosive (14).

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