Fire extinguishing bomb

Abstract

The application discloses a fire extinguishing bomb, which comprises a bomb body in which a fire extinguishing agent is arranged, the bomb body is a closed elastic balloon, and a heat shrinkable net is arranged outside the elastic balloon to wrap the elastic balloon. The application uses different soft shell designs to adapt to the impact force during high-speed projection, uses a simple structure to reduce the cost, uses a non-explosive method to realize the shell breaking and content injection of the fire extinguishing bomb in a fire field, avoids the danger, reduces the storage and transportation requirements, and can be widely applied to the fire fighting field.

Description

Technical Field

[0001] This invention relates to fire-fighting facilities, and in particular to a fire extinguishing bomb. Background Technology

[0002] Fire extinguishing bombs are a relatively new type of fire extinguishing equipment. They are easy to use, unlike traditional fire extinguishers which require shaking, inverting, or pulling pins. They can be conveniently pre-positioned and, under specific design conditions, can be mounted on flying objects (such as rockets) for long-distance delivery to the fire scene.

[0003] In order to enable fire extinguishing bombs to be stored for a long time during peacetime and to release the fire extinguishing powder / agent stored inside quickly when used, existing fire extinguishing bomb designs are mainly divided into two categories.

[0004] A fire extinguishing grenade uses a brittle outer shell and internal structure (e.g., glass) to store one or more fire extinguishing agents. In use, the grenade is thrown into a fire. The impact causes the brittle outer shell to rupture, releasing the contained fire extinguishing agent. After the grenade breaks apart, the fire extinguishing agent flows out. If it contains multiple fire extinguishing agent components, they temporarily mix and react to produce fire extinguishing foam.

[0005] However, this type of fire extinguishing bomb has the following shortcomings: 1. High cost: brittle materials have their own costs, and their production and assembly involve complex processes; 2. Not suitable for long-distance projection: the launch of the projection device has extremely high acceleration and impulse at the moment of launch, and is subjected to extremely high impact force. Brittle materials are prone to breakage in the launch device at the initial stage of launch; 3. Requirements for storage and transportation: because it is a brittle material, it is a fragile item.

[0006] Another type of fire extinguishing bomb relies on technology similar to hand grenades and artillery shells. It uses a fuse to detonate the explosive components inside, which impact the solid outer shell and cause it to break. The extinguishing agent is then ejected with the explosive gas.

[0007] However, this type of fire extinguishing bomb also has the following drawbacks: 1. High cost, requiring complex design and structure to achieve effective detonation; 2. Dangerous storage and transportation, with strict environmental and operational requirements. Due to the presence of detonating chemical components, there is a risk of accidental triggering in harsh environments or during improper handling. To avoid accidents, strict requirements are placed on storage and handling conditions. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the aforementioned background technology and provide a fire extinguishing bomb that meets the functional requirements of "pre-filled", "stable during storage and transportation", and "self-rupture and ejection of the contained fire extinguishing agent upon entering the fire scene". It uses different soft shell designs to adapt to the impact force during high-speed projection; uses a simple structure to reduce costs; and uses a non-explosive method to achieve shell rupture and contents ejection within the fire scene, thereby avoiding danger and reducing the requirements for storage and transportation conditions.

[0009] The present invention provides a fire extinguishing projectile, comprising a projectile body containing a fire extinguishing agent, wherein the projectile body is a closed elastic bladder, and the elastic bladder is provided with a heat-shrinkable net to wrap around it.

[0010] In the above technical solution, the heat shrinkable net is provided with a toothed structure that punctures the elastic balloon when the elastic balloon expands due to heat.

[0011] In the above technical solution, the tooth structure includes a single tooth ring structure with multiple sharp teeth evenly distributed and / or a number of separate tooth structures disposed at the intersection of the heat shrinkable mesh.

[0012] In the above technical solution, each of the separate tooth structures consists of two identical, interlocking single tooth structures. Each single tooth structure has a triangular prism with a ridge as a cutting edge. One end of the sidewall away from the cutting edge of the triangular prism is provided with an insert block, and the other end is provided with a notched ring. There is a gap between the insert block and the notched ring of the triangular prism. The thickness of the gap, the insert block, and the notched ring are all equal. A support platform extending from the sidewall to both sides is provided on the sidewall of the gap. The insert block consists of a long plate and a protrusion located at one end of the long plate with a width greater than the width of the long plate. The insert block of one single tooth structure and the notched ring of the other single tooth structure form a plug-in fit, and the notched ring of one single tooth structure abuts against the support platform of the other single tooth structure. The cavity formed by the gap between the two interlocking single tooth structures allows the heat shrink mesh to pass through.

[0013] In the above technical solution, each of the triangular prisms of the separated tooth structure is provided with a cutting edge at the cutting opening.

[0014] In the above technical solution, the single toothed ring structure has one corresponding sharp tooth evenly distributed on its inner and outer sides, or / and the single toothed ring structure has one corresponding sharp tooth evenly distributed on its upper and lower sides.

[0015] In the above technical solution, the sharp teeth of the single tooth ring structure are chamfered on both sides of the side facing away from the elastic bladder.

[0016] In the above technical solution, the heat shrinkable mesh is composed of an outer heat insulation layer and an inner shrinkable body arranged coaxially.

[0017] In the above technical solution, a single toothed ring structure is provided at each of the two poles of the elastic balloon, and a single toothed ring structure is provided on the outer ring of the equator of the elastic balloon, or a separation tooth structure is provided at the intersection of each grid of the heat shrinkable mesh at the equator of the elastic balloon.

[0018] In the above technical solution, the elastic balloon is divided into multiple elastic bladders, and the extinguishing agent inside the elastic bladders is a fluid.

[0019] The fire extinguishing bomb of this invention has the following beneficial effects:

[0020] Soft, flexible outer shell: can be used in devices that project fire extinguishing projectiles at high speeds; can reduce the cost of the outer shell.

[0021] Low-cost structure: This reduces the overall cost of the product, allowing fire departments to stockpile large quantities of fire extinguishing bombs. In line with the low-cost structure, the extinguishing agent can also be replaced with simple water, further reducing the overall cost of the product.

[0022] Simple structure and manufacturing: Firefighting organizations can complete the filling and preparation of fire extinguishing bombs themselves, further reducing operating costs.

[0023] Non-explosive components: This solves the limitations of storage and transportation conditions; Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the fire extinguishing bomb of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the fire extinguishing bomb of the present invention;

[0026] Figure 3 This is a schematic diagram of the overall structure of a single toothed ring structure in the first embodiment of the fire extinguishing bomb of the present invention.

[0027] Figure 4 This is a schematic diagram of the single toothed ring structure located at both poles in the first embodiment of the fire extinguishing bomb of the present invention;

[0028] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0029] Figure 6 This is a schematic diagram of a single toothed ring structure located on the outer ring of the equator in the first embodiment of the fire extinguishing bomb of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a single toothed ring structure located on the outer ring of the equator combined with a heat-shrinkable net in the first embodiment of the fire extinguishing bomb of the present invention;

[0031] Figure 8This is a schematic diagram of the connection relationship between the separating tooth structure and the heat shrinkable net in the second embodiment of the fire extinguishing bomb of the present invention;

[0032] Figure 9 This is a perspective view of the separation tooth structure in a second embodiment of the fire extinguishing bomb of the present invention;

[0033] Figure 10 This is a front view of the overall structure of the separating tooth structure in a second embodiment of the fire extinguishing bomb of the present invention;

[0034] Figure 11 This is a first-view perspective schematic diagram of each individual tooth structure of the separated tooth structure in a second embodiment of the fire extinguishing bomb of the present invention.

[0035] Figure 12 This is a first-view frontal view of each individual tooth structure of the separated tooth structure in a second embodiment of the fire extinguishing bomb of the present invention;

[0036] Figure 13 This is a second-view perspective schematic diagram of each individual tooth structure of the separated tooth structure in a second embodiment of the fire extinguishing bomb of the present invention. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0038] The technical problem to be solved by this invention:

[0039] This invention addresses the functional requirements of fire extinguishing bombs: "pre-filled", "stable during storage and transportation", and "self-rupture and ejection of the contained fire extinguishing agent upon entering the fire scene". It utilizes different soft shell designs to adapt to the impact force during high-speed projection; employs a simple structure to reduce costs; and uses a non-explosive method to achieve shell rupture and contents ejection within the fire scene, thereby avoiding danger and reducing requirements for storage and transportation conditions.

[0040] Technical solution of the present invention:

[0041] The fire extinguishing bomb proposed in this invention consists of an elastic bladder 10, a heat-shrinkable net 20, a single toothed ring structure 30 and / or a split toothed structure 40, and a fire extinguishing agent fluid filled in the elastic bladder 10.

[0042] The fire extinguishing projectile of the present invention includes a projectile body containing a fire extinguishing agent. The projectile body is a closed elastic sac 10, and the elastic sac 10 is provided with a heat shrinkable net 20 for wrapping it on the outside.

[0043] The heat shrinkable net 20 is provided with a tooth structure that punctures the elastic balloon 10 when it expands due to heat. In one or more embodiments, the tooth structure includes a single tooth ring structure 30 with multiple sharp teeth evenly distributed and / or a plurality of separate tooth structures 40 disposed at the intersection of the mesh of the heat shrinkable net 20.

[0044] like Figures 1 to 2 As shown, the tooth structure can have two embodiments. Two exemplary solutions are given: a single tooth ring structure 30 and a split tooth structure 40. Figure 1 The technical solution provided in the first embodiment is as follows: a single toothed ring structure 30 is provided at each of the two poles of the elastic balloon 10, and a single toothed ring structure 30 is provided on the outer ring of the elastic balloon 10 at the equator. Figure 2 Another embodiment discloses the following technical content: each intersecting grid of the heat-shrinkable mesh 20 at the equator of the elastic balloon 10 is provided with a separating tooth structure 40. Details of the two embodiments are provided below.

[0045] The structure of this invention consists of:

[0046] 20 heat-shrinkable nets are placed on the surface of the elastic bladder 10, which expands after being filled with extinguishing agent.

[0047] A single toothed ring structure 30 is held in place by a heat-shrinkable mesh 20; any rigid material will suffice.

[0048] The toothed structure 40 is attached to the heat-shrinkable mesh 20; any rigid material will suffice.

[0049] The elastic balloon 10 is divided into multiple elastic bladders, and the extinguishing agent inside the elastic bladders is a fluid.

[0050] The working principle of this invention is as follows: An elastic bladder 10 without extinguishing agent is placed in a heat-shrinkable mesh 20, then the elastic bladder 10 is filled with extinguishing agent fluid, and the elastic bladder 10 is sealed. During use, when the entire fire extinguishing bomb enters a high-temperature fire environment, the material of the heat-shrinkable mesh 20 shrinks due to heat, causing the surface of the elastic bladder 10 to bulge outwards from between the meshes. At this time, the bulging surface of the elastic bladder 10 comes into contact with the toothed structure. When the shrinkage reaches a certain degree and the bulge of the elastic bladder 10 reaches a certain degree, the surface of the elastic bladder 10 is punctured by the toothed structure at the contact point. Subsequently, the originally inflated elastic bladder 10 contracts inwards due to the contraction stress of the elastic membrane, causing the internal extinguishing agent fluid to be expelled from the puncture point due to the compression caused by the contraction.

[0051] Explanation of the working principle: The elastic balloon 10 mentioned is most commonly seen as a latex balloon. This material is inexpensive, highly elastic, and can effectively expel the internal fluid after puncture. If a latex balloon is filled with gas, it will burst upon contact with fire. However, if the latex balloon is filled with liquid, the liquid will absorb heat and cool the latex material, making it impossible for a water-filled latex balloon to burst quickly in a fire without an external puncture structure. Therefore, for the elastic balloon 10 filled with liquid, an external heat-shrinkable mesh 20 is necessary.

[0052] If the heat-shrinkable mesh 20 shrinks significantly, the latex balloon can burst even without a puncture structure. However, to increase the range of elastic materials available for the elastic balloon 10, reduce the requirements for heat shrinkage, and ensure the formation of a puncture, a toothed structure is added.

[0053] The specific details of the two aforementioned embodiments are as follows:

[0054] Example 1

[0055] For a single toothed ring structure 30. Figure 3 An exemplary design scheme is given. The single toothed ring structure 30 has one-to-one corresponding sharp teeth evenly distributed on both its inner and outer sides (see...). Figures 4 to 5 ) or / and the single toothed ring structure 30 has a corresponding set of sharp teeth evenly distributed on its upper and lower sides (see Figures 6 to 7 The single toothed ring structure 30 has chamfered edges on both sides of the side of the sharp teeth facing away from the elastic balloon 10. According to... Figure 5 The example design in the image has a chamfer on the outer surface of the teeth to prevent injury, and below are simple sharp teeth.

[0056] Its core characteristic is its sharp structure. There can be many variations in the details.

[0057] Example 2

[0058] For the separation tooth structure 40, Figure 8 An exemplary design scheme is given.

[0059] This example of a split tooth structure consists of two identical components assembled in pairs. During assembly, one of the ropes from the heat-shrinkable mesh 20 is inserted into it. The specific structure is as follows:

[0060] See Figures 9 to 10 Each of the separating tooth structures 40 consists of two identical, interlocking single tooth structures 41. The separating tooth structures 40 include two types:

[0061] See Figures 11 to 13In the first type of split tooth structure 40, each individual tooth structure 41 has a triangular prism 411 with a ridge as a cutting edge. The side wall of the triangular prism 411 away from the cutting edge is provided with an insert block 412 and a notched ring 413 at the other end. There is a gap between the insert block 412 and the notched ring 413 of the triangular prism 411. The thickness of the gap, the insert block 412 and the notched ring 413 are all equal. A support platform 414 extending from the side wall to both sides is provided on the side wall of the gap. The insert block 412 is composed of a long plate and a protrusion located at one end of the long plate with a width greater than the width of the long plate. The insert block 412 of one individual tooth structure 41 and the notched ring 413 of another individual tooth structure 41 form a plug-in fit, and the notched ring 413 of one individual tooth structure 41 abuts against the support platform 414 of the other individual tooth structure 41. The cavity formed by the gap of the two interlocking individual tooth structures 41 allows the heat-shrinkable mesh 20 to pass through.

[0062] See Figures 9 to 10 In the second type of separation tooth structure 40, in addition to the various structures included in the first type of separation tooth structure 40, each separation tooth structure 40 also has a cutting edge 415 at the cutting opening of the triangular prism 411.

[0063] The separating tooth structure 40 can have multiple designs, as long as it meets the two basic conditions of "being able to hold the net rope in" and "having a sharp feature that can pierce the elastic balloon", it can achieve its basic function. Different structures will have different levels of ease of assembly.

[0064] In terms of the design details of the tooth structure, it is necessary to consider that when the heat-shrinkable net 20 is not heated, it still has complete contact with the surface of the elastic balloon 10, and there is a slight indentation. The requirements for the teeth are: the net should not puncture when it slightly indents, and it should puncture when the net shrinks significantly due to heat. To achieve this, the depth and angle of the teeth can be adjusted. Figures 9 to 10 , Figures 11 to 13 Taking the split tooth structure 40 as an example, two adjustment schemes are given. Similar adjustment schemes can also be used for the tooth tip portion of the single tooth ring structure 30.

[0065] The heat-shrinkable mesh 20 consists of an outer heat-insulating layer 201 and an inner shrinkable body 202 arranged coaxially. To reduce heat conduction between the fluid inside the elastic balloon 10 and the material of the heat-shrinkable mesh 20, and to lower the temperature of the heat-shrinkable mesh 20, an outer heat-insulating layer 201 can be fitted over the heat-shrinkable material. The outer heat-insulating layer 201 increases the temperature difference between the inner shrinkable body 202 (which shrinks when heated) and the elastic balloon 10. A structural example is shown below. Figure 7 As shown. The outer insulation layer 201 can use common flame-retardant fiber materials, etc.

[0066] This invention involves wrapping an elastic balloon 10 with a heat-shrinkable mesh 20. In a high-temperature environment, the shrinkage of the heat-shrinkable mesh 20 compresses the elastic balloon 10, causing the surface of the elastic balloon 10 at the protruding parts of the mesh to be compressed against the various toothed structures attached to the heat-shrinkable mesh 20, thereby creating rupture openings at the positions corresponding to the toothed structures. Simultaneously, the shrinkage stress of the elastic balloon 10 itself exerts pressure on the internal fire extinguishing agent, allowing the fire extinguishing agent to be ejected from the rupture openings.

[0067] If the heat shrinkable net 20 is connected to a specific structure (not shown in the figure), so that the parts within the specific structure move relative to each other and puncture a specific position of the elastic balloon 10, the same effect of "puncturing the elastic balloon 10 in a high-temperature environment" can be achieved. It can also be used to puncture multiple elastic balloons 10 in a set or in parallel to achieve the effect of temporary mixing and reaction of different fire extinguishing agents to generate foam.

[0068] The technical principles and key technologies of this invention are as follows:

[0069] Use an elastic balloon 10 to store the fluid extinguishing agent;

[0070] Using a mesh heat-shrinkable material wrapped around the outer surface of the elastic balloon 10, in a high-temperature environment, the elastic balloon 10 deforms outward at the mesh gaps by the shrinkage of the heat-shrinkable mesh 20.

[0071] The toothed structure connected to the heat shrinkable mesh 20 and distributed in the mesh gaps is used to press against the surface of the elastic balloon 10 when the elastic balloon 10 protrudes in the mesh gaps, so as to puncture the elastic balloon 10.

[0072] The elastic balloon 10 has surface contraction stress in the inflated state, which makes the internal extinguishing agent have a large pressure. When a rupture occurs on the surface of the elastic balloon 10, the internal extinguishing agent can be ejected from the rupture.

[0073] The beneficial effects of the technical solution of this invention:

[0074] Soft, flexible outer shell: can be used in devices that project fire extinguishing projectiles at high speeds; can reduce the cost of the outer shell.

[0075] Low-cost structure: This reduces the overall cost of the product, allowing fire departments to stockpile large quantities of fire extinguishing bombs. In line with the low-cost structure, the extinguishing agent can also be replaced with simple water, further reducing the overall cost of the product.

[0076] Simple structure and manufacturing: Firefighting organizations can complete the filling and preparation of fire extinguishing bombs themselves, further reducing operating costs.

[0077] Non-explosive components: This solves the limitations of storage and transportation conditions;

[0078] Definitions of abbreviations and key terms:

[0079] Fire extinguishing powder: A general term for dry powder, water, and fire extinguishing agents used for fire extinguishing.

[0080] Fluids: Gases and liquids both belong to the category of fluids.

[0081] Fire extinguishing bomb: A container filled with fire extinguishing powder. When it comes into contact with a high-temperature flame, it is designed to break open, thereby spraying out the fire extinguishing powder inside.

[0082] Heat shrinkable materials: Common heat shrink film and heat shrink tubing. Various chemical composition schemes are available to achieve these properties.

[0083] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0084] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A fire extinguishing bomb, comprising a bomb body containing a fire extinguishing agent, characterized in that: The projectile is a closed elastic balloon (10). The elastic balloon (10) is surrounded by a heat-shrinkable net (20). The heat-shrinkable net (20) has a tooth structure that punctures the elastic balloon (10) when it expands due to heat. The tooth structure includes a single tooth ring structure (30) with multiple sharp teeth evenly distributed and several separate tooth structures (40) located at the intersection of the mesh of the heat-shrinkable net (20). Each separate tooth structure (40) is composed of two identical interlocking single tooth structures (41). Each single tooth structure (41) has a triangular prism (411) with a ridge as a cutting edge. The side wall of the triangular prism (411) away from the cutting edge is provided with an insert block (412) at one end and a notch ring (413) at the other end. There is a gap between the embedded block (412) and the notched ring (413) of (411). The thickness of the gap, the embedded block (412) and the notched ring (413) are all equal. A support platform (414) extending from the side wall to both sides is provided on the side wall of the gap. The embedded block (412) is composed of a long plate and a protrusion located at one end of the long plate with a width greater than the width of the long plate. The embedded block (412) of one of the single tooth structures (41) forms a plug-in fit with the notched ring (413) of another single tooth structure (41). The notched ring (413) of one of the single tooth structures (41) abuts against the support platform (414) of another single tooth structure (41). The cavity heat-supply shrinkable mesh (20) formed by the gap of the two interlocking single tooth structures (41) passes through.

2. The fire extinguishing bomb according to claim 1, characterized in that: Each of the three prisms (411) of the separated tooth structure (40) has a cutting edge (415) at the cut.

3. The fire extinguishing bomb according to claim 2, characterized in that: The single toothed ring structure (30) has one corresponding sharp tooth evenly distributed on its inner and outer sides, or / and one corresponding sharp tooth evenly distributed on its upper and lower sides.

4. The fire extinguishing bomb according to claim 3, characterized in that: The sharp teeth of the single toothed ring structure (30) are chamfered on both sides of the side facing away from the elastic balloon (10).

5. The fire extinguishing bomb according to claim 4, characterized in that: The heat shrinkable mesh (20) consists of an outer heat insulation layer (201) and an inner shrinkable body (202) arranged coaxially.

6. The fire extinguishing bomb according to claim 5, characterized in that: The elastic balloon (10) has a single toothed ring structure (30) at each of its two poles, and the heat shrinkable net (20) at the equator of the elastic balloon (10) has a separation toothed structure (40) at each intersection of its grids.

7. The fire extinguishing bomb according to claim 6, characterized in that: The elastic balloon (10) is divided into multiple elastic bladders, and the extinguishing agent inside the elastic bladders is a fluid.

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