An aircraft fire protection system squib initiator

Abstract

The utility model discloses an airplane fire -prevention system explosion cap detonating device, include: anti -splash subassembly, explosion release subassembly and current release subassembly, anti -splash subassembly includes splash -proof cover plate, and the socket connector is installed to splash -proof cover plate top, explosion release subassembly includes release cylinder body, and the release cylinder body top and splash -proof cover plate abut. The utility model, the outline of the placing groove of socket connector and the outline of explosion cap explosion end are attached, have the fool -proof design, and can change according to different model explosion cap, adapt to all explosion cap types of existing civil aviation airplane fire -extinguishing system, splash -proof cover plate and splash baffle can be combined with release cylinder body and form the detonation release cavity, effectively avoid the operation risk of splash residue, high -frequency switch box is electrically connected with the explosion cap placed on socket connector through detonation lead, and then through the stable output high -precision direct current, the explosion cap is detonated, effectively improve the safety and reliability of trigger explosion.

Description

Technical Field

[0001] This utility model relates to the field of aircraft fire protection system technology, specifically to an explosive cap detonation device for an aircraft fire protection system. Background Technology

[0002] In order to extinguish fires quickly, aircraft are equipped with fire suppression systems in critical areas such as the engine compartment and passenger cabin. The main component of the fire suppression system is a high-pressure fire extinguishing cylinder, which stores a certain amount of extinguishing agent under a certain pressure and allows the pilot to control the release of the extinguishing agent when a fire occurs. An explosive diaphragm is installed in the discharge port. When the explosive cap is detonated, the diaphragm ruptures and the extinguishing agent is released from the discharge port.

[0003] Since explosive caps have a limited lifespan, those that fail tests or have reached the end of their lifespan should be disposed of promptly to eliminate safety hazards and be treated as ordinary waste. However, existing disposal methods mostly involve manual detonation by electricity, which takes a long time and poses safety risks. Furthermore, storing explosive caps occupies a large amount of warehouse storage space for extended periods. Utility Model Content

[0004] The purpose of this utility model is to provide an explosion cap detonation device for an aircraft fire protection system in order to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including: A splash guard assembly, detachably connected to the explosive cap, is used for inserting the explosive cap; An explosion release assembly, detachably connected to a splash shield assembly, is used to collect explosion debris; The current release assembly is electrically connected to the explosive cap and is used to detonate the explosive cap; The splash-proof assembly includes a splash-proof cover, and a socket connector is installed on the top of the splash-proof cover; The explosion release assembly includes a release cylinder, the top of which abuts against a splash guard. The explosion cap is inserted into the socket connector, so that when the explosion cap is energized, it has a release path along the axis of the release cylinder.

[0006] As a further description of the above technical solution, a socket connector is installed in the middle of the splash cover through a first fixing member, and a splash baffle is welded to the outside of the splash cover.

[0007] As a further description of the above technical solution, a placement groove is provided in the middle of the socket connector, and the inner contour of the placement groove fits the outer contour of the explosive end of the explosive cap.

[0008] As a further description of the above technical solution, the socket connector has a first overlapping edge extending from its edge, and the first overlapping edge is detachably connected to the splash-proof cover plate through a first fixing member.

[0009] As a further description of the above technical solution, the splash guard is arranged around the top outer side of the release cylinder body, and the splash guard is arranged parallel to the release cylinder body.

[0010] As a further description of the above technical solution, the top of the release cylinder is detachably connected to the splash guard plate via a second fixing member, and a movable chassis is installed at the bottom of the release cylinder.

[0011] As a further description of the above technical solution, the release cylinder body has a second overlapping edge extending from its edge, and the second overlapping edge is detachably connected to the splash guard plate through a second fastener.

[0012] As a further description of the above technical solution, the release cylinder has an internal detonation cavity, which is a hollow column.

[0013] As a further description of the above technical solution, the bottom of the mobile chassis is provided with casters, and the casters are provided with stop brakes.

[0014] As a further description of the above technical solution, the current release component includes a high-frequency switch box, which is electrically connected to the energized end of the explosion cap via a detonation wire.

[0015] The beneficial effects of this utility model are as follows: 1. This utility model has a simple structure, high safety, convenient operation, wide applicability, and strong versatility. It effectively solves the problem of safe detonation of explosive caps in aircraft fire extinguishing systems and the problem of warehouse resource occupation. It can promptly scrap explosive caps that fail the test or have reached the end of their service life. 2. In this utility model, the inner contour of the socket connector's placement groove fits snugly with the outer contour of the explosive end of the explosive cap, which has a foolproof design and avoids the risk of failure or short circuit caused by incorrect pin connection; and it can be replaced according to different models of explosive caps, and is compatible with all types of explosive caps in existing civil aviation aircraft fire extinguishing systems. 3. In this utility model, the splash guard and splash baffle can be combined with the release cylinder to form a safe detonation and release chamber, effectively avoiding the operational risks of splashing residue; 4. In this utility model, the high-frequency switch box is electrically connected to the explosion cap placed on the socket connector through the detonation wire, and then the explosion cap is detonated by a stable output of high-precision DC power, which effectively improves the safety and reliability of triggering the explosion.

[0016] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the explosion cap detonation device for the aircraft fire protection system of this utility model; Figure 2 This is a front view of the explosion cap detonation device of the aircraft fire protection system of this utility model; Figure 3 This is a top view of the explosion cap detonation device of the aircraft fire protection system of this utility model; Figure 4 yes Figure 3 Sectional view at point AA; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 for Figure 1 Electrical schematic diagram of a medium- and high-frequency switch box.

[0018] Figure label: 1. Splash protection assembly; 11. Splash cover; 12. Socket connector; 121. Placement slot; 122. First overlap edge; 13. Splash baffle; 2. Explosion release assembly; 21. Release cylinder; 211. Second overlap edge; 212. Detonation chamber; 22. Mobile chassis; 221. Mobile casters; 222. Cut-off brake; 3. Current release assembly; 31. High-frequency switch box; 32. Detonation wire; 4. Explosion cap. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figures 1-6 As shown, in one embodiment, an explosive cap detonation device for an aircraft fire protection system includes: a splash shield 1, an explosive release assembly 2, and an electric current release assembly 3; Among them, the anti-splash component 1 is detachably connected to the explosive cap 4 and is used to insert the explosive cap 4; Exemplarily, the splash shield assembly 1 includes a splash shield cover 11, on the top of which a socket connector 12 is mounted; In some embodiments, the splash guard 11 may be made of a high-strength lightweight alloy, which can meet the protection strength requirements while reducing the overall weight.

[0021] Specifically, a socket connector 12 is installed in the middle of the splash cover 11 via a first fixing member, and a splash baffle 13 is welded to the outside of the splash cover 11.

[0022] In some embodiments, the first fastener may be a high-strength bolt.

[0023] Furthermore, a placement groove 121 is provided in the middle of the socket connector 12, and the inner contour of the placement groove 121 fits the outer contour of the explosive end of the explosive cap 4.

[0024] Correspondingly, the socket connector 12 has a first overlapping edge 122 extending along its edge, and the first overlapping edge 122 is detachably connected to the splash cover 11 via a first fixing member.

[0025] In some embodiments, the baffle is made of thick-walled cold-rolled steel plate, which is arranged around the top outer side of the release cylinder 21 and parallel to the cylinder, effectively intercepting horizontally splashed residue.

[0026] Understandably, the inner contour of the placement slot 121 of the socket connector 12 fits the outer contour of the explosive end of the explosive cap 4, which not only ensures that the explosive cap 4 is inserted securely, but also forms a foolproof design, that is, by matching the shape, it avoids insertion backwards or incorrectly, and avoids the risk of detonation failure or short circuit caused by incorrect pin connection from the source; and the operator can quickly replace the appropriate socket connector 12 according to different models of explosive cap 4 in the civil aircraft fire extinguishing system, so as to achieve full coverage of all types of explosive cap 4 in the existing civil aircraft fire extinguishing system.

[0027] Please continue reading. Figures 1-6 In this embodiment, the explosion release component 2 and the anti-splash component 1 are detachably connected to receive explosion residue; For example, the explosion release assembly 2 includes a release cylinder 21, the top of which abuts against the splash guard 11; In some embodiments, the release cylinder 21 is welded from 304 stainless steel, which has excellent corrosion resistance, high strength and impact resistance, and can withstand the instantaneous impact force when the explosion cap 4 is detonated without deformation or cracking, ensuring structural safety and reliability. It is understandable that the explosion cap 4 is plugged into the socket connector 12, so that the explosion cap 4 has a release path along the axis of the release cylinder 21 after being energized.

[0028] Furthermore, the top of the release cylinder 21 is detachably connected to the splash guard 11 via a second fastener, and a movable chassis 22 is installed at the bottom of the release cylinder 21.

[0029] In some embodiments, the second fastener may be a high-strength nut.

[0030] In some embodiments, the second overlapping edge 211 extending from the edge of the release cylinder 21 precisely fits the corresponding structure of the splash guard 11 to ensure that there are no gaps at the connection and prevent residue from overflowing from the gaps. In some embodiments, the release cylinder 21 has an internal detonation cavity 212, which is hollow and cylindrical. Its diameter and length are designed according to the maximum explosive power of the explosion cap 4. Typically, the diameter is 3-5 times the diameter of the explosion cap 4, and the length is 2-3 times the length of the explosion cap 4. This provides sufficient release space for the explosion and concentrates the explosive energy in the axial direction through cavity constraint, reducing the radial impact on the cylinder.

[0031] Understandably, the sealed detonation and release chamber formed by the splash guard 11, splash guard 13 and release cylinder 21 can completely confine the explosion residue inside, physically preventing the residue from splashing and causing injury to the operator, and greatly reducing the operational risk.

[0032] In some embodiments, the bottom of the mobile chassis 22 is equipped with four sets of omnidirectional casters 221, and each caster 221 is equipped with a stop brake 222; it can be flexibly turned when pushed to adapt to different sites such as airport warehouses and maintenance workshops; when fixed, the brake is locked to ensure that the equipment does not move during the detonation process.

[0033] Please continue reading. Figures 1-6 In this embodiment, the current release component 3 is electrically connected to the explosion cap 4 and is used to detonate the explosion cap 4; In some embodiments, the current release component includes a high-frequency switch box 31, which integrates a precision circuit module that can stably output high-precision DC power. The high-frequency switch box 31 is electrically connected to the power-on terminal of the explosion cap 4 through an ignition wire 32. The wire is made of high-voltage resistant insulating material to ensure stable current transmission and anti-interference, and to avoid detonation abnormalities caused by wire damage or signal interference.

[0034] See Figure 6 When 28V DC power is applied to pins 1 / 3 and 2 of the high-frequency switch box 31, the circuit module can output a stable voltage to the explosion cap 4, ensuring that it can be reliably detonated under the rated voltage; at the same time, it supports an external battery pack as a backup power source, so that it can still work normally in the absence of an external power source, thereby improving the emergency adaptability of the equipment.

[0035] In some embodiments, the high-frequency switch box 31 has built-in short-circuit protection and delayed triggering functions. If a short circuit occurs in the circuit, the protection device will instantly cut off the output to avoid equipment damage. Delayed triggering allows the operator to evacuate to a safe area after connection is completed before starting the detonation, further improving operational safety. Through the stable output of high-precision current, this component effectively avoids accidental detonation or detonation failure caused by current fluctuations, significantly improving the reliability of the detonation cap 4 triggering process.

[0036] It is understandable that the high-frequency switch box 31 is electrically connected to the explosion cap 4 placed on the socket connector 12 through the detonation wire 32, and then the explosion cap 4 is detonated by a stable output of high-precision DC power, which effectively improves the safety and reliability of triggering the explosion.

[0037] Through the above technical solution, the number of structural components in this application is small and the connection method is simple, which facilitates quick assembly, maintenance and component replacement. The overall structure is simple and easy to operate, and the operational risks are reduced in all aspects from physical isolation to energy control. The replaceable socket connector 12 covers all models of civil aviation explosion caps 4, which has strong versatility. The mobile chassis 22 with brakes allows it to move flexibly in various areas of the airport, reducing the dependence on fixed sites. In practical applications, it can efficiently handle explosion caps 4 that fail tests or have reached the end of their lifespan, avoiding long-term stockpiling of scrap and occupying warehouse resources. At the same time, standardized operating procedures ensure that every detonation is safe and controllable, effectively solving the problems of high safety risks, poor adaptability, cumbersome operation, and high resource consumption in the handling of explosion caps 4 in traditional aircraft fire suppression systems.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detonating the explosion cap of an aircraft fire protection system, characterized in that, include: The splash protection assembly (1) is detachably connected to the explosion cap (4) for inserting the explosion cap (4). The explosion release assembly (2) is detachably connected to the splash shield assembly (1) for receiving explosion debris; The current release component (3) is electrically connected to the explosion cap (4) for detonating the explosion cap (4). The splash-proof assembly (1) includes a splash-proof cover (11), and a socket connector (12) is installed on the top of the splash-proof cover (11). The explosion release assembly (2) includes a release cylinder (21), the top of which abuts against a splash guard (11); The explosion cap (4) is inserted into the socket connector (12), so that the explosion cap (4) has a release path along the axis of the release cylinder (21) after being energized.

2. The aircraft fire protection system explosion cap detonation device according to claim 1, characterized in that, A socket connector (12) is installed in the middle of the splash cover (11) through the first fixing member, and a splash baffle (13) is welded to the outside of the splash cover (11).

3. The aircraft fire protection system explosion cap detonation device according to claim 2, characterized in that, The socket connector (12) has a placement groove (121) in the middle, and the inner contour of the placement groove (121) fits the outer contour of the explosion end of the explosion cap (4).

4. The aircraft fire protection system explosion cap detonation device according to claim 2, characterized in that, The socket connector (12) has a first overlapping edge (122) extending along its edge, and the first overlapping edge (122) is detachably connected to the splash cover (11) by a first fastener.

5. The aircraft fire protection system explosion cap detonation device according to claim 2, characterized in that, The splash guard (13) is arranged around the top outer side of the release cylinder (21), and the splash guard (13) is arranged parallel to the release cylinder (21).

6. The aircraft fire protection system explosion cap detonation device according to claim 1, characterized in that, The top of the release cylinder (21) is detachably connected to the splash guard (11) via a second fixing member, and a movable chassis (22) is installed at the bottom of the release cylinder (21).

7. The aircraft fire protection system explosion cap detonation device according to claim 6, characterized in that, The release cylinder (21) has a second overlapping edge (211) extending along its edge. The second overlapping edge (211) is detachably connected to the splash guard (11) via a second fastener.

8. The aircraft fire protection system explosion cap detonation device according to claim 6, characterized in that, The release cylinder (21) has an internal detonation cavity (212) which is a hollow column.

9. The aircraft fire protection system explosion cap detonation device according to claim 6, characterized in that, The bottom of the mobile chassis (22) is provided with a mobile caster (221), and the mobile caster (221) is provided with a stop brake (222).

10. The aircraft fire protection system explosion cap detonation device according to claim 1, characterized in that, The current release assembly includes a high-frequency switch box (31), which is electrically connected to the power-on terminal of the explosion cap (4) via a detonation wire (32).

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