Internal and external multilayer liquid storage explosion-proof container

Abstract

The utility model discloses an inside and outside multilayer liquid storage explosion-proof container, the inside of the container is hollow, the container is used for placing an explosion source, and a container shell comprises an internal liquid storage module, a metal structure layer and an external liquid storage module which are sequentially arranged from inside to outside; the internal liquid storage module comprises at least one anti-bomb liquid storage layer which is sequentially arranged from inside to outside, the external liquid storage module comprises at least one anti-explosion liquid storage layer which is sequentially arranged from inside to outside, and the anti-bomb liquid storage layer and the anti-explosion liquid storage layer are hollow and store liquid. According to the utility model, the fragment speed is effectively reduced through the internal liquid storage module, the fragment after speed reduction is subjected to bottom-carrying protection through the metal structure layer, and the equivalent mass of the metal structure layer is increased through the external liquid storage module, so that the metal structure layer is protected from large-deflection deformation and damage; therefore, the structure quality and the production cost can be greatly reduced while the combined load of the explosive shock wave and the high-speed fragment group is effectively defended.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof containers, in particular to an internal and external multi-layer liquid storage explosion-proof container capable of resisting the combined damaging effects of explosion shock waves and high-speed fragments. Background Art

[0002] When shelled gun (cannon) shells, prefabricated fragmentation bombs, terrorist explosive devices, etc. explode, they usually produce explosion shock waves and high-speed fragmentation groups at the same time, posing a major threat to surrounding personnel, buildings, and facilities. Explosion-proof containers with excellent comprehensive performance can effectively reduce the destructive power of explosions and effectively protect nearby personnel, playing an important role in both military and civilian fields.

[0003] According to the material characteristics, the current explosion-proof structures can be divided into two categories: one is metal explosion-proof containers, which use metal materials to resist explosion shock waves and high-speed fragments. For example, steel thick-walled explosion-proof cylinders and explosion-proof balls are common types of explosion-proof containers on the market today. Such containers are usually made of thicker steel, aluminum alloy plates and other materials. They are heavy and inconvenient to carry and move; the other is composite explosion-proof containers, which are usually made of fiber composite materials such as aramid and high-strength polyethylene fibers. Their manufacturing process is complex and the cost is high.

[0004] On this basis, in order to utilize the attenuation of explosion shock waves and the deceleration characteristics of fragment groups by liquid media, liquid storage explosion-proof containers have gradually become a new type of explosion-proof container structure. On the one hand, the liquid medium has a good deceleration effect on high-speed fragments, which can effectively reduce the kinetic energy of the fragment group and produce a uniform effect on the explosion shock wave load. The water mist generated in the detonation suppresses the explosion flame and attenuates the shock wave; on the other hand, the liquid medium helps to increase the equivalent mass of the structure, enhance the inertial advantage of the structure, and improve the uniform expansion characteristics of the structure. For example, in the patent document with the publication number CN107314725A, a variable wall thickness composite explosion-proof structure is disclosed, which stores liquid in a flexible fiber layer and absorbs the explosion energy by the dispersion of the liquid medium. However, this type of structure has a complex structure, a complex manufacturing process, a high cost, and is not conducive to mass production. Moreover, under the combined action of the explosion shock wave and the high-speed fragment group, the composite material structure with low strength is easily damaged by dense perforation and shear filling by the high-speed fragment group, and secondary fragments are generated. On this basis, the patent document with publication number CN113465463A discloses a solid-liquid coupled core sandwich cylindrical explosion-proof structure, which adopts glass fiber, polyurea, polymer foam and other materials, and absorbs explosion-proof liquid medium through high water absorption foam material, which is used to improve the protective performance of liquid storage explosion-proof structure. However, compared with homogeneous materials, the pore distribution of foam materials is uneven, and the distribution of liquid medium in the pores is random. The structure is prone to local weak positions in the process of resisting explosion shock waves and high-speed fragment group loads. In addition, such structures still have the problems of complex structure, complex processing technology, high cost, and are not conducive to mass production. Utility Model Content

[0005] In view of the problems that the current metal explosion-proof containers are heavy and difficult to carry, and the composite material explosion-proof containers are complex in structure and have high processing costs, the utility model proposes an inner and outer multi-layer liquid storage explosion-proof container, in which the liquid medium is placed on the inner and outer sides of the metal structure layer through the liquid storage container to form an inner and outer multi-layer liquid storage explosion-proof structure of "liquid structure layer-metal structure layer-liquid structure layer", wherein the inner liquid storage layer is used to decelerate fragments to prevent the fragments from penetrating the metal structure layer; the outer liquid storage layer is used to increase the equivalent mass of the metal structure layer, and the load energy is converted into kinetic energy of the liquid medium through the crushing of the outer liquid storage layer and the scattering of the liquid medium, thereby preventing the metal structure layer from being damaged.

[0006] The technical solution adopted by the utility model is:

[0007] A multi-layer liquid storage explosion-proof container with inner and outer layers, wherein the interior of the container is hollow and is used for placing an explosion source, wherein the container shell comprises an inner liquid storage module, a metal structural layer, and an outer liquid storage module which are sequentially arranged from the inside to the outside; the inner liquid storage module comprises at least one anti-bullet liquid storage layer which is sequentially arranged from the inside to the outside, and the outer liquid storage module comprises at least one anti-explosion liquid storage layer which is sequentially arranged from the inside to the outside, wherein both the anti-bullet liquid storage layer and the anti-explosion liquid storage layer are hollow inside and store liquid.

[0008] In the above solution, an air gap is reserved between the outermost anti-bullet liquid storage layer and the metal structure layer to form a first air layer.

[0009] In the above solution, the anti-ballistic liquid storage layer is provided in multiple layers, and air gaps are reserved between adjacent anti-ballistic liquid storage layers to form a second air layer.

[0010] In the above solution, the explosion-proof liquid storage layer located on the innermost side is arranged close to the metal structure layer.

[0011] In the above scheme, the explosion-proof liquid storage layer is provided with multiple layers, and adjacent explosion-proof liquid storage layers are closely connected without reserving air gaps.

[0012] In the above scheme, the bullet-proof liquid storage layer and the explosion-proof liquid storage layer both include inner wall plates and outer wall plates that are spaced apart, a bottom plate used to connect the bottom ends of the inner wall plates and the outer wall plates, and a top plate used to connect the top ends of the inner wall plates and the outer wall plates; a plurality of liquid storage ports are provided on the top plate for injecting liquid into each liquid storage layer.

[0013] In the above solution, the anti-bullet liquid storage layer and the anti-explosion liquid storage layer are both made of plastic, and are fixedly connected to the metal structure layer by bonding or adhesive bonding.

[0014] In the above solution, the height of the internal liquid storage module and the external liquid storage module is less than or equal to the height of the metal structure layer.

[0015] In the above scheme, the inner and outer multi-layer liquid storage explosion-proof container is spherical or cylindrical.

[0016] In the above solution, the liquid filled in the internal liquid storage module and the external liquid storage module is a water medium or a shear thickening liquid medium.

[0017] The beneficial effects of the utility model are:

[0018] The utility model effectively reduces the speed of fragments through an internal liquid storage module, provides bottom-up protection for the fragments after the speed reduction through a metal structure layer, and increases the equivalent mass of the metal structure layer through an external liquid storage module to protect the metal structure layer from large deflection deformation and damage, thereby effectively defending against the combined load of explosion shock waves and high-speed fragment groups while greatly reducing the structural mass and production costs.

[0019] Compared with metal explosion-proof containers, the utility model reduces the structural deformation deflection through an external liquid medium, and attenuates the fragment speed through an internal liquid medium, which can greatly reduce the thickness of the metal structure layer and the structure weight; compared with composite material liquid storage containers, the utility model has a simple structure and uses cheap plastic and metal as materials, so the production cost is greatly reduced and it is easy to carry out mass production; the internal liquid storage layer can be effectively blocked by the metal structure layer after being damaged by the load, and the external liquid storage layer is not directly affected by the load and is therefore not easy to produce secondary fragments.

[0020] The utility model does not need to store liquid before use, has a small structural mass, is easy to move, can quickly store liquid when in use, and is convenient and quick to operate. In addition, the number and placement of liquid storage layers can be customized according to load characteristics, and ultimately a lightweight, low-cost, efficient liquid storage explosion-proof container is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 This is a comparison chart of the explosion-proof protection performance of metal explosion-proof containers under different liquid storage methods;

[0023] Figure 2 It is a three-dimensional structural diagram of the first embodiment of the utility model of the inner and outer multi-layer liquid storage explosion-proof container;

[0024] Figure 3 yes Figure 2 A cross-sectional view of the first embodiment of the inner and outer multi-layer liquid storage explosion-proof container;

[0025] Figure 4 yes Figure 2 A longitudinal sectional view of the first embodiment of the inner and outer multi-layer liquid storage explosion-proof container;

[0026] Figure 5 It is a cross-sectional view of the second embodiment of the utility model inner and outer multi-layer liquid storage explosion-proof container;

[0027] Figure 6 It is a longitudinal sectional view of the second embodiment of the utility model inner and outer multi-layer liquid storage explosion-proof container.

[0028] In the figure: 10, metal structure layer; 20, internal liquid storage module; 21, bullet-proof liquid storage layer; 22, first air layer; 23, second air layer; 30, external liquid storage module; 31, explosion-proof liquid storage layer; 40, liquid storage port. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The currently widely used liquid storage explosion-proof containers usually place the liquid inside the container. According to the numerical simulation results, taking metal explosion-proof containers as an example, it is difficult to improve the explosion protection performance of the structure by placing the liquid medium inside the metal structure. When the metal structure layer specifications and explosion equivalent are constant, the deformation of the liquid external metal explosion-proof container is significantly smaller than that of the liquid internal metal explosion-proof container. Figure 1 As shown, it can be seen that the liquid external method can significantly improve the explosion protection performance of the liquid storage explosion-proof container. On this basis, combined with the speed attenuation effect of the liquid medium on high-speed fragments, the utility model adopts a multi-layer liquid storage explosion-proof container inside and outside to effectively defend against the combined load of the explosion shock wave and the high-speed fragment group, while also significantly reducing the structural quality and production cost.

[0031] like Figure 2-4 As shown, the first embodiment of the utility model provides an internal and external multi-layer liquid storage explosion-proof container, which is used to resist the combined destructive effect of the explosion shock wave and high-speed fragments formed by the explosion of explosives (including bare explosives and shelled explosives) in the container. The internal and external multi-layer liquid storage explosion-proof container is hollow inside and is used to place the explosion source. The container shell includes an internal liquid storage module 20, a metal structure layer 10, and an external liquid storage module 30 arranged in sequence from the inside to the outside; the internal liquid storage module 20 includes a bullet-proof liquid storage layer 21, and the external liquid storage module 30 includes an explosion-proof liquid storage layer 31. The bullet-proof liquid storage layer 21 and the explosion-proof liquid storage layer 31 are both hollow inside and store liquid.

[0032] When the explosion source explodes in the container, high-speed fragments and explosion shock waves will be generated simultaneously. The internal liquid storage module 20 is mainly used to initially reduce the speed of the fragments, thereby ensuring that the metal structure layer 10 is not penetrated; the metal structure layer 10 is used to provide a bottom-up protection for the fragments after the speed reduction; the external liquid storage module 30 is used to increase the equivalent mass of the metal structure layer 10 and protect the metal structure layer 10 from large deflection deformation and damage. In this way, the cheap liquid medium is fully utilized to improve the protection ability of the tank body, reduce the weight of the tank body and the amount of metal used, and reduce costs.

[0033] In further optimization, an air gap is reserved between the anti-bullet liquid storage layer 21 and the metal structure layer 10 to form a first air layer 22. The first air layer 22 is used to provide a movement space for the liquid, thereby attenuating the water hammer extrusion load on the metal structure layer 10.

[0034] Further optimization, the anti-bullet liquid storage layer 21 of the internal liquid storage module 20 and the anti-explosion liquid storage layer 31 of the external liquid storage module 30 both include inner wall panels and outer wall panels that are spaced apart, a bottom plate for connecting the bottom ends of the inner wall panels and the outer wall panels, and a top plate for connecting the top ends of the inner wall panels and the outer wall panels. A plurality of liquid storage ports 40 are provided on the top plate for injecting liquid into each liquid storage layer. After liquid storage is completed, each liquid storage layer is sealed by a rubber plug, a plastic plug, etc. During the implementation process, the inner wall surface of the innermost anti-explosion liquid storage layer 31 can be eliminated based on technical conditions while ensuring the water tightness of the external liquid storage module 30.

[0035] Further optimization, the anti-bullet liquid storage layer 21 of the internal liquid storage module 20 and the anti-explosion liquid storage layer 31 of the external liquid storage module 30 are both made of plastic (such as ABS plastic, PP plastic, etc.) through bonding, gluing, molding, etc., so as to form a space for storing liquid. And they are fixedly connected to the metal structure layer 10 by bonding or gluing.

[0036] For further optimization, the material of the metal structure layer 10 can be steel, aluminum alloy or other metal materials, preferably high-strength steel.

[0037] Further optimization, the wall thickness of the anti-bullet liquid storage layer 21, the anti-explosion liquid storage layer 31 and the metal structure layer 10 can be freely adjusted and determined according to the defense target load. Figure 4 As shown, the wall thickness of the anti-bullet liquid storage layer 21 is t1, the wall thickness of the explosion-proof liquid storage layer 31 is t2, the thickness of the top plate of the liquid storage module is t3, and the wall thickness of the metal structure layer 10 is t4. In the implementation process, t1, t2, and t3 are minimized as much as possible under the premise of ensuring the bearing capacity of the liquid storage structure and the structure does not undergo significant deformation after water storage, so as to reduce the production cost of the liquid storage module.

[0038] Further optimization, the height of the internal liquid storage module 20 and the external liquid storage module 30 is less than or equal to the height of the metal structure layer 10. For details, see Figure 4 , the radius of the metal structure layer 10 is R1, the thickness of the anti-ballistic liquid storage layer 21 is h1, the thickness of the anti-explosion liquid storage layer 31 is h2, the height of the metal structure is H1, the height of the anti-ballistic liquid storage layer 21 is H2, and the height of the anti-explosion liquid storage layer 31 is H3. R1, H1, and t4 are determined by the intensity of the explosion shock wave load, and it should be ensured that the metal structure does not fail or be damaged under the load. H2 is determined by the flying angle of the fragment group, and should be consistent with the height of the distribution area of ​​the fragment group, and should not be too large or too small. H3 should be less than or equal to H1, and H3 should be consistent with the height of the main deformation area of ​​the metal structure layer 10, and should not be too large or too small, so as to give full play to the inhibitory effect of the liquid medium on the structural deformation.

[0039] Further optimization, the inner and outer multi-layer liquid storage explosion-proof container is spherical or cylindrical. In this embodiment, a cylindrical shape is adopted.

[0040] Further optimization, the liquid filled in the internal liquid storage module 20 and the external liquid storage module 30 is water medium or shear thickening liquid medium, and the liquid storage volume of the liquid medium is adjusted according to the actual load situation. Inflammable and explosive liquid medium shall not be used.

[0041] like Figure 5-6 As shown, it is an internal and external multi-layer liquid storage explosion-proof container provided by the second embodiment of the utility model. The interior of the container is hollow and is used to place the explosion source. The container shell includes an internal liquid storage module 20, a metal structure layer 10, and an external liquid storage module 30 arranged in sequence from the inside to the outside. The structure of this embodiment is similar to that of the first embodiment, except that: the internal liquid storage module 20 includes two layers of anti-bullet liquid storage layers 21, and air gaps are reserved between adjacent anti-bullet liquid storage layers 21 to form a second air layer 23; the external liquid storage module 30 includes two layers of anti-explosion liquid storage layers 31, and adjacent anti-explosion liquid storage layers 31 are tightly connected without reserving air gaps. The second air layer 23 is also used to provide movement space for the liquid, thereby attenuating the water hammer extrusion load on the metal structure layer 10.

[0042] It should be noted that the number of bullet-proof liquid storage layers 21 and explosion-proof liquid storage layers 31 can be structurally customized according to fragment loads of different speeds and explosion shock wave loads of different intensities. Therefore, in other embodiments, the number of bullet-proof liquid storage layers 21 and explosion-proof liquid storage layers 31 can also be other numbers, which is designable and convenient for large-scale commercial application.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. An explosion-proof container with multiple layers of liquid storage inside and outside, the container is hollow inside and is used to place the explosion source, characterized in that: The container shell includes an internal liquid storage module, a metal structure layer, and an external liquid storage module which are arranged in sequence from the inside to the outside; the internal liquid storage module includes at least one bullet-proof liquid storage layer which is arranged in sequence from the inside to the outside, and the external liquid storage module includes at least one explosion-proof liquid storage layer which is arranged in sequence from the inside to the outside, and both the bullet-proof liquid storage layer and the explosion-proof liquid storage layer are hollow inside and store liquid.

2. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: An air gap is reserved between the anti-bullet liquid storage layer located on the outermost side and the metal structure layer to form a first air layer.

3. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The anti-ballistic liquid storage layer is provided with multiple layers, and air gaps are reserved between adjacent anti-ballistic liquid storage layers to form a second air layer.

4. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The explosion-proof liquid storage layer located at the innermost side is arranged closely to the metal structure layer.

5. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The explosion-proof liquid storage layer is provided with multiple layers, and adjacent explosion-proof liquid storage layers are closely connected without reserving air gaps.

6. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The bullet-proof liquid storage layer and the explosion-proof liquid storage layer both include inner wall plates and outer wall plates that are spaced apart, a bottom plate used to connect the bottom ends of the inner wall plates and the outer wall plates, and a top plate used to connect the top ends of the inner wall plates and the outer wall plates; a plurality of liquid storage ports are provided on the top plate for injecting liquid into each liquid storage layer.

7. The inner and outer multi-layer liquid storage explosion-proof container according to claim 6, characterized in that: The anti-bullet liquid storage layer and the anti-explosion liquid storage layer are both made of plastic and are fixedly connected to the metal structure layer by bonding or adhesive bonding.

8. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The height of the internal liquid storage module and the external liquid storage module is less than or equal to the height of the metal structure layer.

9. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The inner and outer multi-layer liquid storage explosion-proof container is spherical or cylindrical.

10. The inner and outer multi-layer liquid storage explosion-proof container according to claim 1, characterized in that: The liquid filled in the internal liquid storage module and the external liquid storage module is a water medium or a shear thickening liquid medium.

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