Composite explosion-proof aluminum foil

Abstract

The utility model relates to the technical field of explosion-proof aluminum foils, in particular to a composite explosion-proof aluminum foil which comprises an upper surface layer, a lower surface layer and an explosion-proof layer, buffer layers are arranged on the upper surface and the lower surface of the explosion-proof layer, the upper surface layer and the lower surface layer are located on the two sides of the explosion-proof layer, the upper surface layer and the lower surface layer are fixedly connected with the surfaces of the buffer layers, and each buffer layer is of a honeycomb structure. According to the utility model, the buffer layer and the explosion-proof layer are fixedly connected to play a role in reinforcing the structure of the explosion-proof layer, the honeycomb cavities of the buffer layer play a role in buffering when the explosion-proof layer is subjected to small impact, and only the outer side surface is damaged by the impact, so that the explosion-proof layer is not damaged, and the explosion-proof layer is not damaged by the honeycomb cavities of the buffer layer. When impact is large, the buffer layers on the upper side and the lower side of the anti-explosion layer are extruded to deform and absorb energy, the inner anti-explosion layer is prevented from being damaged, when the impact is too large, the anti-explosion layer is damaged, and fire disasters are caused, the fireproof blocks expand at high temperature to block cracks, and therefore internal combustible gas is prevented from leaking.

Description

Technical Field

[0001] The utility model relates to an aluminum foil, in particular to a composite explosion-proof aluminum foil, belonging to the technical field of explosion-proof aluminum foils. Background Art

[0002] Explosion-proof aluminum foil is an aluminum foil material with explosion-proof performance, which is usually used in some occasions with explosion-proof requirements, such as gasoline storage tanks in gas stations, dangerous chemical transport vehicles, etc. Now it is also applied to the fuel tanks of some vehicles, the storage fuel tanks of airplanes, ships and vessels, and the shells of explosion-proof electrical appliances.

[0003] The existing explosion-proof aluminum foil is usually directly rolled into a thin sheet from aluminum metal, without external buffering and protection. When subjected to external impact, it is relatively vulnerable to the influence of external impact force, resulting in damage to the surface of the explosion-proof aluminum foil, causing defects and affecting the explosion-proof effect. Moreover, when the explosion-proof aluminum foil is damaged due to a large impact, the leakage of internal combustible gas is likely to cause a fire.

[0004] Therefore, it is urgent to improve the composite explosion-proof aluminum foil to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a composite explosion-proof aluminum foil. The buffer layer is fixedly connected to the explosion-proof layer to strengthen the structure of the explosion-proof layer. When subjected to a small impact, the honeycomb cavities of the buffer layer play a buffering effect, and the impact only damages the outer surface. When the impact is large, the buffer layers on both sides of the explosion-proof layer are squeezed and deformed to absorb energy, preventing damage to the internal explosion-proof layer. When the impact is too large and the explosion-proof layer is damaged and a fire is caused, the fireproof blocks will expand when encountering high temperature to block the cracks, thereby preventing the leakage of internal combustible gas.

[0006] To achieve the above purpose, the main technical solutions adopted by the utility model include: including an upper surface layer, a lower surface layer and an explosion-proof layer. Buffer layers are provided on both the upper surface and the lower surface of the explosion-proof layer. The upper surface layer and the lower surface layer are located on both sides of the explosion-proof layer, and the upper surface layer and the lower surface layer are fixedly connected to the surfaces of the buffer layers. The buffer layer is of a honeycomb structure. The outer surface of the upper surface layer is provided with protruding hexagonal reinforcing ribs, and fireproof blocks are filled in the cavities of the buffer layer.

[0007] Preferably, the honeycomb structure of the buffer layer is hexagonal, the shape of the hexagonal reinforcing ribs is the same as that of the buffer layer, and the multi-sided connection nodes of the hexagonal reinforcing ribs are located at the center of the cavity of the buffer layer.

[0008] Preferably, the buffer layer is welded to the explosion-proof layer at the multi-sided connection nodes.

[0009] Preferably, the honeycomb structure of the buffer layer is composed of multiple aluminum strips.

[0010] Preferably, the fireproof block is a fireproof expanding agent.

[0011] Preferably, the thickness of the explosion-proof layer is greater than the thicknesses of the upper surface layer and the lower surface layer.

[0012] The utility model has at least the following beneficial effects:

[0013] 1. The buffer layer is fixedly connected to the explosion-proof layer to strengthen the structure of the explosion-proof layer. When subjected to a small impact, the honeycomb cavities of the buffer layer play a buffering effect, and the impact only damages the outer surface. When the impact is large, the buffer layers on both sides of the explosion-proof layer are squeezed and deformed to absorb energy, preventing the internal explosion-proof layer from being damaged. When the impact is too large and the explosion-proof layer is damaged, causing a fire, the fireproof block will expand when encountering high temperature to block the cracks, thereby preventing the leakage of internal combustible gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0015] Figure 1 is a side view schematic diagram provided by the utility model;

[0016] Figure 2 is a front view schematic diagram provided by the utility model;

[0017] Figure 3 is an internal structure schematic diagram provided by the utility model;

[0018] Figure 4 is a schematic diagram of the relative position of the reinforcing rib and the buffer layer provided by the utility model.

[0019] In the figure, 1. upper surface layer; 2. lower surface layer; 3. explosion-proof layer; 4. buffer layer; 5. reinforcing rib; 6. fireproof block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the embodiments of the present application in conjunction with the accompanying drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0021] As Figures 1 - 4As shown in the figure, the composite explosion-proof aluminum foil provided in this embodiment includes an upper surface layer 1, a lower surface layer 2, and an explosion-proof layer 3. The upper surface layer 1 is in contact with the outside, and the inner surface layer is in contact with the surface of the internal object. Buffer layers 4 are provided on both the upper and lower surfaces of the explosion-proof layer 3. The upper surface layer 1 and the lower surface layer 2 are located on both sides of the explosion-proof layer 3, and the upper surface layer 1 and the lower surface layer 2 are fixedly connected to the surfaces of the buffer layers 4. The buffer layer 4 has a honeycomb structure. The buffer layer 4 is welded to the explosion-proof layer 3 at the multi-sided connection nodes. The honeycomb structure is fixedly connected to the explosion-proof layer 3 to strengthen the structure of the explosion-proof layer 3. The honeycomb cavities of the buffer layer 4 have a buffering effect. When the impact is small, only the outer surface of the upper surface layer 1 will be damaged. When the impact is large, the buffer layers 4 on both sides of the explosion-proof layer 3 will deform and absorb energy. Raised hexagonal reinforcing ribs 5 are provided on the outer surface of the upper surface layer 1. When subjected to an external impact, the reinforcing ribs 5 on the outer side of the upper surface layer 1 enhance the toughness of the upper surface layer 1. A fire-proof block 6 is filled in the cavity of the buffer layer 4. The fire-proof block 6 is a fire-proof expanding agent, and the fire-proof block 6 has a porous structure. The fire-proof expanding agent is evenly sprayed in the cavity of the buffer layer 4, and after the fire-proof expanding agent solidifies, the fire-proof block 6 is formed. When the explosion-proof layer 3 is damaged due to excessive impact and a fire occurs, the fire-proof block 6 expands at high temperature to block the cracks.

[0022] Further, as Figure 4 shown, the honeycomb structure of the buffer layer 4 is hexagonal, the shape of the hexagonal reinforcing rib 5 is the same as that of the buffer layer 4, and the multi-sided connection nodes of the hexagonal reinforcing rib 5 are located at the center of the cavity of the buffer layer 4. The reinforcing rib 5 enhances the toughness of the center position of the cavity of the buffer layer 4.

[0023] Further, as Figure 3 shown, the buffer layer 4 is formed by welding and stretching adjacent sides of multiple extremely thin aluminum strips. The multiple extremely thin aluminum strips are placed side by side, and adjacent two aluminum strips are welded in sections, so that after the multiple aluminum strips are pulled apart, they form a hexagonal mesh structure. The buffer layer 4 is in a contracted state before being welded to the explosion-proof layer 3.

[0024] Further, as Figure 1 shown, the explosion-proof layer 3, the upper surface layer 1, and the lower surface layer 2 are all 7075 hard aluminum. The thickness of the explosion-proof layer 3 is greater than the thicknesses of the upper surface layer 1 and the lower surface layer 2. The upper surface layer 1 and the lower surface layer 2 only play a protective role for the explosion-proof layer 3. After the upper surface layer 1 and the lower surface layer 2 are damaged, the explosion-proof layer 3 can still play an explosion-proof role.

[0025] As Figures 1 - 4As shown in the figure, the principle of the composite explosion-proof aluminum foil provided in this embodiment is as follows: The buffer layer 4 unfolds into a honeycomb structure. After the buffer layer 4 is unfolded, it is welded to the explosion-proof layer 3 at the nodes to connect the buffer layer 4 and the explosion-proof layer 3, strengthening the structural strength of the explosion-proof layer 3. Then, the fireproof expansion agent is evenly sprayed into the cavities of the buffer layer 4, and then the upper surface layer 1 and the lower surface layer 2 are pasted on. After the fireproof expansion agent solidifies, fireproof blocks 6 are formed in the cavities. The honeycomb structure is fixedly connected to the explosion-proof layer 3 to strengthen the structure of the explosion-proof layer 3. The honeycomb cavities of the buffer layer 4 have a buffering effect. When the impact is small, only the outer surface of the upper surface layer 1 will be damaged. When the impact is large, the buffer layers 4 on both sides of the explosion-proof layer 3 deform and absorb energy. The outer surface of the upper surface layer 1 is provided with convex hexagonal reinforcing ribs 5. The multi-sided connection nodes of the hexagonal reinforcing ribs 5 are located at the center of the cavity of the buffer layer 4. The reinforcing ribs 5 strengthen the toughness of the center position of the cavity of the buffer layer 4. The upper surface layer 1 and the lower surface layer 2 only play a protective role for the explosion-proof layer 3. After the upper surface layer 1 and the lower surface layer 2 are damaged, the explosion-proof layer 3 can still play an explosion-proof role.

[0026] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0027] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a commodity or system. Without more restrictions, the element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the element.

[0028] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art that do not depart from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A composite explosion-proof aluminum foil, comprising an upper surface layer (1), a lower surface layer (2) and an explosion-proof layer (3), characterized in that: The explosion-proof layer (3) is provided with a buffer layer (4) on both the upper surface and the lower surface. The upper surface layer (1) and the lower surface layer (2) are located on both sides of the explosion-proof layer (3). The upper surface layer (1), the lower surface layer (2) and the surface of the buffer layer (4) are fixedly connected. The buffer layer (4) is a honeycomb structure. The outer surface of the upper surface layer (1) is provided with raised hexagonal reinforcing ribs (5). The cavity of the buffer layer (4) is filled with fireproof blocks (6).

2. The composite explosion-proof aluminum foil according to claim 1, characterized in that: The honeycomb structure of the buffer layer (4) is hexagonal, the shape of the hexagonal reinforcement ribs (5) is consistent with the shape of the buffer layer (4), and the multi-sided connection nodes of the hexagonal reinforcement ribs (5) are located at the center of the cavity of the buffer layer (4).

3. The composite explosion-proof aluminum foil according to claim 1, characterized in that: The buffer layer (4) is welded to the explosion-proof layer (3) at the multilateral connection nodes.

4. The composite explosion-proof aluminum foil according to claim 1, characterized in that: The honeycomb structure of the buffer layer (4) is composed of a plurality of aluminum bars.

5. The composite explosion-proof aluminum foil according to claim 1, characterized in that: The fireproof block (6) is a fireproof expansion agent.

6. The composite explosion-proof aluminum foil according to claim 1, characterized in that: The explosion-proof layer (3) has a thickness greater than that of the upper surface layer (1) and the lower surface layer (2).

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