Power Launching Device

Abstract

A power launching device includes a warhead, a dry powder cylinder, a main combustion cylinder, and a tail nozzle connected in sequence. A secondary combustion cylinder is coaxially arranged inside the dry powder cylinder, and fire extinguishing dry powder is filled between the outer wall of the secondary combustion cylinder and the inner wall of the dry powder cylinder. A secondary ignition and detonation assembly is installed at the connection between the dry powder cylinder and the main combustion cylinder. A timer and an inflation channel are provided in the secondary ignition and detonation assembly. One end of the inflation channel is communicated with the inside of the secondary combustion cylinder, and the other end is communicated with the inside of the main combustion cylinder through a locking assembly. A main ignition assembly is installed at the connection between the main combustion cylinder and the tail nozzle. A thin film is provided at the end of the tail nozzle, and an inflation valve is provided on the side wall. The main ignition assembly communicates the main combustion cylinder and the tail nozzle. In the present invention, no gas is filled during the production, assembly, and transportation processes of the entire device. Only a mixed gas of methane and air is filled when at the fire extinguishing site to ensure the safety of the production and transportation processes. Moreover, methane is used as the fuel, and it is more convenient to obtain compared to the solid fuel of gunpowder.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and particularly to a power launching device. Background Art

[0002] The launched fire-extinguishing bomb is one of the ways to achieve long-distance or high-rise building fire extinguishing. There are two existing launched fire-fighting systems. One is to use high-pressure air, a gas generator or high-pressure gas generated by gunpowder as power, directly carry loose powder and spray it out of the launcher at high speed, and spray the loose fire-extinguishing powder to the fire scene for fire extinguishing. The projection height or distance of this method is limited and it is generally not applicable to high-rise building fire extinguishing. The other is the launched fire-extinguishing bomb, which uses a rocket to carry the fire extinguishing agent or uses an air cannon, a barrel, etc. to launch the fire-extinguishing warhead to achieve high-rise building or long-distance fire extinguishing. Generally, a reaction spraying combustion chamber for propulsion is installed on the dry powder fire-extinguishing bomb body. The combustion chamber is filled with launching gunpowder, and it is a fire-extinguishing system launched by a guiding barrel. Its launch uses the recoil effect during combustion to project the warhead to the fire scene.

[0003] The existing launching devices of fire-extinguishing bombs all use gunpowder as the power source. During the production, installation, storage and transportation of the shells, the gunpowder has been installed, resulting in great potential safety hazards and being not conducive to civilian production and promotion. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a power launching device, which uses methane as fuel to replace the existing gunpowder power source to reduce potential safety hazards.

[0005] A power launching device includes a warhead, a dry powder cylinder, a main combustion cylinder and a tail nozzle connected in sequence. A secondary combustion cylinder is coaxially arranged inside the dry powder cylinder, and fire-extinguishing dry powder is filled between the outer wall of the secondary combustion cylinder and the inner wall of the dry powder cylinder;

[0006] A secondary ignition and detonation assembly is installed at the connection of the dry powder cylinder and the main combustion cylinder. A timer and an inflation channel are provided in the secondary ignition and detonation assembly. One end of the inflation channel is communicated with the inside of the secondary combustion cylinder, and the other end is communicated with the inside of the main combustion cylinder through a locking assembly;

[0007] A main ignition assembly is installed at the connection of the main combustion cylinder and the tail nozzle. A thin film is provided at the end of the tail nozzle, and an inflation valve is provided on the side wall. The main ignition assembly communicates the main combustion cylinder and the tail nozzle, and the inflation valve is used to sequentially fill the mixed gas of methane and air into the main combustion cylinder and the secondary combustion cylinder.

[0008] Compared with the prior art, in the present invention, the production, assembly, and transportation processes of the entire device do not involve filling with fuel gas. The mixture of methane and air is filled only when at the fire extinguishing site to ensure the safety of the production and transportation processes. Moreover, methane is used as the fuel, which is more convenient to obtain compared to solid gunpowder fuel, enabling this power launching device to be widely applied to various devices that require flight power.

[0009] Further, the secondary ignition and detonation assembly includes a connecting card plate connecting the dry powder cylinder and the main combustion cylinder, and an installation cylinder penetrating through the connecting card plate;

[0010] A locking assembly is provided at one end of the installation cylinder located in the main combustion cylinder;

[0011] A secondary ignition assembly is provided at one end of the installation cylinder located in the dry powder cylinder. The other end of the secondary ignition assembly is connected to the secondary combustion cylinder, and the secondary combustion cylinder is connected to the warhead.

[0012] Further, the inflation channel includes a first channel in the side wall of the installation cylinder and a second channel in the bottom;

[0013] One end of the second channel communicates with the locking assembly, and the other end communicates with the secondary ignition assembly through the first channel.

[0014] Further, the secondary ignition assembly includes a secondary ignition head installed on the installation cylinder and a secondary igniter covering the secondary ignition head. The end of the secondary igniter extends into the secondary combustion cylinder;

[0015] A first through hole communicating with the first channel is provided on the secondary ignition head, and a second through hole is provided at the end of the secondary igniter. The second through hole communicates the inside of the secondary igniter with the inside of the secondary combustion cylinder.

[0016] Further, the locking assembly includes an inflation joint provided on the installation cylinder. A first installation hole is provided at one end of the inflation joint close to the installation cylinder, and a second installation hole is provided at the other end. The second installation hole communicates with the first installation hole;

[0017] A locking valve is provided in the first installation hole, and a slidable locking block is provided in the second installation hole. The locking block is fixed by a locking pin on the side wall of the inflation joint;

[0018] An inflation hole is provided on the side wall of the inflation joint. The inflation hole communicates with the second installation hole. When the pressure in the main combustion cylinder is greater than a preset value and cuts off the locking pin, the locking block slides into the limit position in the second installation hole and blocks the inflation hole.

[0019] Further, the locking block has a T-shaped structure, and the locking pin passes through the side wall of the inflation joint and catches the T-shaped end of the locking block.

[0020] Further, the main ignition assembly includes a fixing plate installed at the end of the tail nozzle, a fixing seat embedded in the fixing plate, and a main ignition head provided on the fixing seat. The main ignition head is located inside the main combustion chamber.

[0021] The fixing plate is provided with a third through hole, and the third through hole communicates the main combustion chamber and the tail nozzle.

[0022] Further, a Laval nozzle is provided on the inner wall of the end of the tail nozzle, and the Laval nozzle is threadedly connected to the inner wall of the tail nozzle.

[0023] Further, the middle part of the diaphragm bulges towards the end of the Laval nozzle to form an arc shape, and the edge is fixed inside the end of the Laval nozzle by a compression screw.

[0024] Further, fins are equidistantly spaced on the outer wall of the tail nozzle, and the fins are arranged along the axial direction of the tail nozzle. Description of the Drawings

[0025] Figure 1 is a top view structural schematic diagram of the power launching device in the first embodiment of the present invention;

[0026] Figure 2 is Figure 1 the front view structural schematic diagram of the power launching device in

[0027] Main Element Symbol Explanation:

[0028]

[0029]

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0031] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used herein in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] Please refer to Figure 1 and Figure 2 , a power launching device provided in an embodiment of the present invention includes a warhead 10, a dry powder cylinder 11, a main combustion cylinder 12 and a tail nozzle 13 connected in sequence. A secondary combustion cylinder 14 is coaxially arranged in the dry powder cylinder 11, and fire extinguishing dry powder is filled between the outer wall of the secondary combustion cylinder 14 and the inner wall of the dry powder cylinder 11;

[0035] A secondary ignition and detonation assembly 15 is installed at the connection between the dry powder cylinder 11 and the main combustion cylinder 12. A timer (not shown in the figure) and an air filling channel 50 are provided in the secondary ignition and detonation assembly 15. One end of the air filling channel 50 is communicated with the inside of the secondary combustion cylinder 14, and the other end is communicated with the inside of the main combustion cylinder 12 through a locking assembly 16;

[0036] A main ignition assembly 17 is installed at the connection between the main combustion cylinder 12 and the tail nozzle 13. A thin film 18 is provided at the end of the tail nozzle 13, and an air filling valve 19 is provided on the side wall. The main ignition assembly 17 communicates the main combustion cylinder 12 and the tail nozzle 13, and the air filling valve 19 is used to sequentially fill the mixed gas of methane and air into the main combustion cylinder 12 and the secondary combustion cylinder 14.

[0037] It should be noted that in the present invention, after the mixing gas fills the main combustion cylinder 12, it enters the secondary combustion cylinder 14 through the inflation channel 50. When both the main combustion cylinder 12 and the secondary combustion cylinder 14 are filled with the mixing gas, the entire device enters the ready-to-launch state; after the main ignition assembly 17 ignites, the mixing gas in the main combustion cylinder 12 catches fire and burns instantaneously with an explosion, generating an extremely high pressure inside the main combustion cylinder 12. When the pressure reaches a certain value, the locking assembly 16 blocks the inflation channel 50, isolating the main combustion cylinder 12 and the secondary combustion cylinder 14, so that the flame combustion only stays inside the main combustion cylinder 12 and cannot enter the secondary combustion cylinder 14; when the pressure continues to rise, the diaphragm 18 is cut off, and the gas in the main combustion cylinder 12 is ejected from the end of the tail nozzle 13, simultaneously pushing the entire device to fly forward; the trigger of the timer adopts an inertial mass switch. When the instantaneous acceleration of the entire device during launch flight reaches the preset value, a large inertial force is generated, triggering the timer to work and start timing. When the time reaches the preset time, the secondary ignition and detonation assembly 15 starts to ignite, the secondary combustion cylinder 14 detonates and causes the fire extinguishing dry powder to explode, extinguishing the fire at the fire scene.

[0038] Specifically, the timer is an electronic timer, and different flight times of the timer can be preset according to the distance between the launch site and the fire scene, so as to achieve fire extinguishing at the accurate location. The dry powder cylinder 11, the main combustion cylinder 12, and the tail nozzle 13 are connected by a threaded connection method or other fixed connection methods.

[0039] Please refer to Figure 1 and Figure 2 As shown in FIGS.

[0040] One end of the installation cylinder 152 located in the main combustion cylinder 12 is provided with a locking assembly 16;

[0041] One end of the installation cylinder 152 located in the dry powder cylinder 11 is provided with a secondary ignition assembly 20. The other end of the secondary ignition assembly 20 is connected to the secondary combustion cylinder 14, and the secondary combustion cylinder 14 is connected to the warhead 10.

[0042] Specifically, by providing the connection card 151 and the installation cylinder 152, installation positions are provided for the locking assembly 16 and the secondary ignition assembly 20, and the locking assembly 16 blocks the inflation channel 50 to facilitate isolating the main combustion cylinder 12 and the secondary combustion cylinder 14.

[0043] Please refer to Figure 1 and Figure 2, the inflation channel 50 includes a first channel 501 in the side wall of the mounting cylinder 152 and a second channel 502 in the bottom;

[0044] One end of the second channel 502 communicates with the locking assembly 16, and the other end communicates with the secondary ignition assembly 20 through the first channel 501. By arranging the inflation channel 50 in the mounting cylinder 152, it is convenient for the locking assembly 16 to perform blocking.

[0045] Please refer to Figure 1 and Figure 2 , the secondary ignition assembly 20 includes a secondary ignition head 201 mounted on the mounting cylinder 152 and a secondary igniter 202 covering the secondary ignition head 201. The end of the secondary igniter 202 extends into the secondary combustion cylinder 14;

[0046] A first through hole communicating with the first channel 501 is provided on the secondary ignition head 201, and a second through hole is provided at the end of the secondary igniter 202. The second through hole communicates the inside of the secondary igniter 202 with the inside of the secondary combustion cylinder 14. The mixed gas sequentially enters the secondary combustion cylinder 14 from the inflation channel 50, the first through hole, and the second through hole.

[0047] Please refer to Figure 1 and Figure 2 , the locking assembly 16 includes an inflation joint 161 provided on the mounting cylinder 152. A first mounting hole is provided at one end of the inflation joint 161 close to the mounting cylinder 152, and a second mounting hole is provided at the other end. The second mounting hole communicates with the first mounting hole;

[0048] A locking valve 162 is provided in the first mounting hole, and a slidable locking block 163 is provided in the second mounting hole. The locking block 163 is fixed by a locking pin 164 on the side wall of the inflation joint 161;

[0049] An inflation hole 1611 is provided on the side wall of the inflation joint 161. The inflation hole 1611 communicates with the second mounting hole. When the pressure in the main combustion cylinder 12 is greater than a preset value and the locking pin 164 is cut off, the locking block 163 slides into the limit position in the second mounting hole and blocks the inflation hole 1611.

[0050] It should be noted that in the present invention, both the locking valve 162 and the inflation valve 19 adopt a one-way valve structure to ensure inflatability and airtightness.

[0051] In a preferred embodiment of the present invention, the structure of the locking block 163 is a T-shaped structure, and the locking pin 164 passes through the side wall of the inflation joint 161 and catches the T-shaped end of the locking block 163.

[0052] Please refer to Figure 1 and Figure 2 , the main ignition assembly 17 includes a fixing plate 171 installed at the end of the nozzle 13, a fixing seat 172 embedded in the fixing plate 171, and a main ignition head 173 disposed on the fixing seat 172. The main ignition head 173 is located inside the main combustion chamber 12;

[0053] A third through hole is provided on the fixing plate 171, and the third through hole communicates the main combustion chamber 12 and the nozzle 13 to facilitate the passage of the mixed gas.

[0054] Please refer to Figure 1 , in a preferred embodiment of the present invention, the warhead 10 includes a flow guiding head 101, and an outer ring connecting portion 102 extending from the large end edge of the flow guiding head 101. An inner ring connecting portion 103 is provided inside the outer ring connecting portion 102. The inner ring connecting portion 103 is connected to the secondary combustion chamber 14, and the outer ring connecting portion 102 is connected to the dry powder cylinder 11.

[0055] Specifically, the small end of the flow guiding head 101 is in a conical arc shape to reduce the air resistance of the entire device during the launching process.

[0056] In another preferred embodiment of the present invention, a Laval nozzle 131 is provided on the inner wall at the end of the nozzle 13. The Laval nozzle 131 is threadedly connected to the inner wall of the nozzle 13. From the front end to the rear end of the nozzle 13, the inner wall of the Laval nozzle 131 first contracts to a narrow throat and then expands, with this structure to increase the air flow velocity, thereby improving the thrust of the entire launching device.

[0057] In a preferred embodiment of the present invention, the middle part of the film sheet 18 bulges towards the end of the Laval nozzle 131 to form an arc shape, and the edge is fixed inside the end of the Laval nozzle 131 by a compression screw to facilitate the cutting of the film sheet 18.

[0058] In another preferred embodiment of the present invention, tail fins 132 are equidistantly spaced on the outer wall of the nozzle 13. The tail fins 132 are arranged along the axial direction of the nozzle 13, and the flight stability and shooting accuracy are ensured through the tail fins 132.

[0059] It should be noted that in the present invention, a mixed gas of methane and air is filled through the inflation valve 19, and the mixed gas enters the main combustion cylinder 12 through the third through hole; when the main combustion cylinder 12 is filled with the mixed gas, it enters the secondary combustion cylinder 14 through the sequential inflation holes 1611, the locking valve 162, the first mounting hole, the inflation channel 50, the first through hole and the second through hole. When both the main combustion cylinder 12 and the secondary combustion cylinder 14 are filled with the mixed gas, the entire device enters the ready-to-launch state; when the main igniter 173 ignites, the mixed gas in the main combustion cylinder 12 catches fire and burns instantaneously with an explosion, generating a great high pressure in the main combustion cylinder 12. When the pressure reaches a certain value, when the locking pin 164 is cut off, the locking block 163 slides into the limit position in the second mounting hole and blocks the inflation hole 1611, that is, isolating the main combustion cylinder 12 and the secondary combustion cylinder 14, and the flame combustion only stays in the main combustion cylinder 12 and cannot enter the secondary combustion cylinder 14; when the pressure continues to rise, the diaphragm 18 is cut off, and the gas in the main combustion cylinder 12 is ejected from the end of the Laval nozzle 131, while pushing the entire device to fly forward; when the instantaneous acceleration of the entire device during launch flight reaches the preset value, that is, a large inertial force is generated, triggering the timer to work and start timing. When the time reaches the preset time, the secondary igniter 201 starts to ignite, and the secondary combustion cylinder 14 detonates and causes the fire extinguishing dry powder to explode to extinguish the fire at the fire scene.

[0060] In summary, in the present invention, no fuel gas is filled during the production, assembly and transportation processes of the entire device. The mixed gas of methane and air is filled only when at the fire scene to ensure the safety of the production and transportation processes. At the same time, professional training is required at the launch site to avoid safety accidents. And methane is used as the fuel, which is more convenient to obtain compared with solid gunpowder fuel, enabling this power launch device to be widely used in various devices that require flight power.

[0061] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. And the above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A power launching device, characterized in that: It comprises a warhead, a dry powder cylinder, a main combustion cylinder and a tail pipe connected in sequence, wherein a secondary combustion cylinder is coaxially arranged inside the dry powder cylinder, and the outer wall of the secondary combustion cylinder and the inner wall of the dry powder cylinder are filled with fire extinguishing dry powder; A secondary ignition and detonation assembly is installed at the connection between the dry powder cylinder and the main combustion cylinder, and a timer and an air charging channel are arranged in the secondary ignition and detonation assembly. One end of the air charging channel is connected to the interior of the secondary combustion cylinder, and the other end is connected to the interior of the main combustion cylinder through a locking assembly. A main ignition assembly is installed at the connection between the main combustion tube and the tail pipe, a film is provided at the end of the tail pipe, and a charging valve is provided on the side wall. The main ignition assembly is connected to the main combustion tube and the tail pipe, and the charging valve is used to sequentially inject a mixed gas of methane and air into the main combustion tube and the secondary combustion tube; The secondary ignition and detonation assembly includes a connecting card plate connecting the dry powder cylinder and the main combustion cylinder, and a mounting cylinder penetrating the connecting card plate; A locking assembly is provided on one end of the mounting tube located in the main combustion tube; A secondary ignition assembly is provided on one end of the installation cylinder located in the dry powder cylinder, and the other end of the secondary ignition assembly is connected to the secondary combustion cylinder, and the secondary combustion cylinder is connected to the warhead; The main ignition assembly includes a fixing plate installed at the end of the tail pipe, a fixing seat embedded in the fixing plate, and a main ignition head arranged on the fixing seat, wherein the main ignition head is located in the main combustion tube; The fixing plate is provided with a third through hole, and the third through hole is connected with the main combustion tube and the tail pipe.

2. The power transmission device according to claim 1, characterized in that, The inflation channel includes a first channel in the side wall of the mounting tube, and a second channel in the bottom; One end of the second passage is communicated with the locking assembly, and the other end of the second passage is communicated with the secondary ignition assembly through the first passage.

3. The power transmission device according to claim 2, wherein The secondary ignition assembly comprises a secondary ignition head mounted on the mounting tube, and a secondary igniter covering the secondary ignition head, wherein the end of the secondary igniter extends into the secondary combustion tube; The secondary ignition head is provided with a first through hole communicating with the first passage, and the end of the secondary igniter is provided with a second through hole, and the second through hole communicates the interior of the secondary igniter with the interior of the secondary combustion tube.

4. The power transmission device according to claim 2, characterized in that, The locking assembly comprises an inflatable joint provided on the mounting tube, wherein the inflatable joint is provided with a first mounting hole at one end close to the mounting tube and a second mounting hole at the other end, and the second mounting hole is communicated with the first mounting hole; A locking valve is provided in the first mounting hole, and a slidable locking block is provided in the second mounting hole, and the locking block is fixed by a locking pin on the side wall of the inflation joint; An inflation hole is provided on the side wall of the inflation joint, and the inflation hole is connected to the second mounting hole. When the pressure in the main combustion cylinder is greater than a preset value and the locking pin is cut off, the locking block slides into the extreme position in the second mounting hole and blocks the inflation hole.

5. The power launching device according to claim 4, characterized in that, The locking block has a T-shaped structure, and the locking pin passes through the side wall of the inflation joint and clamps the T-shaped end of the locking block.

6. The power transmission device according to claim 1, wherein A Laval nozzle is arranged on the inner wall of the end of the tail pipe, and the Laval nozzle is threadedly connected to the inner wall of the tail pipe.

7. The power launching device according to claim 6, characterized in that, The middle part of the thin film sheet bulges towards the end of the Laval nozzle to form an arc shape, and the edge is fixed inside the end of the Laval nozzle by a compression screw.

8. The power transmission device according to any one of claims 1 to 7, characterized in that, Tail fins are equidistantly spaced on the outer wall of the tail nozzle, and the tail fins are arranged along the axial direction of the tail nozzle.

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