A safety explosion-proof tank

Abstract

The utility model discloses a safe explosion -proof tank relates to the technical field of explosion -proof tank, the utility model discloses an explosion -proof tank main part, and the inside explosion -proof tank main part is connected with the inner tube through the energy -absorbing support, and the energy -absorbing support top and bottom are provided with a plurality of guide slots, and the inner tube is provided with sandbag and apron respectively between the explosion -proof tank main part. The utility model discloses through the setting of inner tube, energy -absorbing support and guide slot, when the inner tube cannot bear explosion impact damage, the inner tube will extrude energy -absorbing support, and the stress is concentrated through the guide slot, and energy -absorbing support will collapse deformation after absorbing the impact force, makes the overall shape be compressed folding like organ generally, reduces the transmission of impact force, through the metal collapse deformation energy -absorbing, and the reliability is high energy -absorbing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof container technology, specifically a safe explosion-proof container. Background Technology

[0002] Safety explosion-proof containers are specialized protective equipment used for the temporary storage, transfer, or disposal of suspected explosives. Their core function is to contain or directionally release the shock wave, fragments, and high temperatures generated by an explosion within the container, minimizing harm to surrounding personnel and facilities, through their inherent strength and specialized design. They primarily consist of a robust outer shell capable of withstanding extremely high internal pressure, an energy-absorbing lining, and a pressure relief and diversion device that safely guides most of the shock wave and explosive products in a predetermined safe direction. They are widely used at bomb disposal sites, for the temporary storage of suspected items, for the transport of hazardous materials, and for fixed deployment in public places. Primarily a passive protective barrier, they do not prevent explosions but rather minimize their destructive impact through physical containment and directional pressure relief, making them crucial equipment for protecting the lives of bomb disposal personnel and reducing damage to public property.

[0003] The utility model discloses a double-layer explosion-proof container with application number 202421926834.0. The container is designed with an outer tank and an inner tank to improve its protective performance. The shock-absorbing rod can buffer and reduce the shock of the inner tank, thereby improving its explosion stability and safety. The explosion-proof cover is fixed in a secondary manner to further improve the stability of the explosion-proof cover and enhance its explosion-proof performance.

[0004] This technical solution uses damping and elastic components as the main components for buffering and absorbing energy, but its effect is poor in actual use. First, the displacement and collapse size is small, so the impact force that can be absorbed is correspondingly low. Second, when the inner cylinder breaks, the fragments will directly penetrate the structure, affecting the airtightness and reducing the damping stability caused by gas compression. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a safe and explosion-proof container to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety explosion-proof container, comprising an explosion-proof container body, an inner cylinder connected inside the explosion-proof container body via an energy-absorbing bracket, and multiple guide grooves provided at the top and bottom of the energy-absorbing bracket, and sandbags and cover plates respectively provided between the inner cylinder and the explosion-proof container body.

[0007] By adopting the above technical solution, the explosion-proof tank body serves as the outer layer of protection, and the inner cylinder serves as the inner load-bearing structure. The two are connected by an energy-absorbing bracket. The guide groove can concentrate the impact force during an explosion and guide the energy-absorbing bracket to collapse and deform, thereby efficiently absorbing the explosion energy. At the same time, the sandbag can buffer, dissipate energy, and passivate the fragments generated by the explosion, while the cover plate seals the space where the sandbag is located, forming a collaborative protection system of "primary load-bearing, energy absorption, fragment protection, and secondary load-bearing".

[0008] Furthermore, the explosion-proof tank body and inner cylinder are both made of high-strength alloy steel, and the energy-absorbing bracket is made of aluminum alloy.

[0009] By adopting the above technical solutions, high-strength alloy steel has excellent impact resistance and deformation resistance, which can ensure that the main body and inner cylinder of the explosion-proof can withstand the initial impact force during an explosion and avoid premature damage; aluminum alloy material has both certain strength and good collapse deformation characteristics, which can fully absorb the explosion energy through its own folding and collapse. Compared with existing damping elastic components, metal collapse energy absorption is more reliable, has higher energy absorption efficiency, and is not easily damaged.

[0010] Furthermore, the energy-absorbing bracket is fixed to the inner cylinder by full welding, and the energy-absorbing bracket is connected to the explosion-proof tank body by spot welding.

[0011] By adopting the above technical solution, the energy-absorbing bracket and the inner cylinder are fully welded and fixed, which can realize the stable transmission of force and ensure that the explosive impact force borne by the inner cylinder can be fully applied to the energy-absorbing bracket, avoiding energy absorption failure due to loose connection; the energy-absorbing bracket is spot-welded to the explosion-proof tank body, which not only plays a limiting role to prevent the inner cylinder and energy-absorbing bracket from rotating in the tank, but also, because the spot weld connection surface is small, only the weld point needs to be cut during subsequent maintenance and disassembly, without damaging the main structure, which greatly improves the convenience of disassembly and assembly.

[0012] Furthermore, multiple sandbags and energy-absorbing supports are provided, and the multiple sandbags and energy-absorbing supports are distributed in a ring array.

[0013] By adopting the above technical solution, the ring array distribution enables the energy-absorbing support to evenly distribute the impact force transmitted by the inner cylinder, avoiding excessive local stress that could lead to structural damage; at the same time, multiple sandbags can provide full coverage.

[0014] Furthermore, the explosion-proof container body is connected to an explosion-proof cover on top, and four handles are fixed around the explosion-proof cover. A pressure relief plate is provided on the top of the explosion-proof cover.

[0015] By adopting the above technical solutions, the explosion-proof cover can seal the top of the explosion-proof container, preventing the explosion energy from spreading unrestrainedly from the top; the handle makes it easy for workers to move the explosion-proof container or rotate and disassemble the explosion-proof cover, improving the convenience of operation; the pressure relief plate can guide the internal pressure upward during an explosion, avoiding the pressure buildup in the container and causing the side wall of the container to be damaged by excessive pressure, while reducing the impact of pressure on surrounding personnel and facilities.

[0016] Furthermore, the explosion-proof cover is threadedly connected to the explosion-proof can body.

[0017] By adopting the above technical solution, the threaded connection has good connection firmness and can prevent the internal pressure from forcing open the explosion-proof cover during an explosion; at the same time, the threaded connection is easy to install and disassemble, and the staff can open and close the explosion-proof cover without the need for complicated tools, which meets the needs of quickly handling suspected explosives in emergency situations.

[0018] Furthermore, the cover plate is detachably connected to the explosion-proof tank body and the inner cylinder respectively by bolts.

[0019] By adopting the above technical solution, the bolt connection makes it easy for workers to disassemble and assemble the cover plate. The cover plate can be quickly opened for operation when the sandbags are initially filled. When the sandbags need to be replaced or the internal energy-absorbing support needs to be maintained due to long-term use, the cover plate can also be easily opened by disassembling the bolts without damaging the tank structure, thus reducing maintenance costs and operational difficulty.

[0020] Furthermore, the inner ring of the cover plate is connected to a first sealing ring, and the outer ring of the cover plate is connected to a second sealing ring.

[0021] By adopting the above technical solution, the double sealing ring can enhance the sealing between the cover plate and the inner cylinder and the explosion-proof tank body, effectively preventing external rainwater, moisture, dust and other impurities from entering the space where the sandbag is located, and reducing the sand from clumping and losing its fluidity due to moisture.

[0022] Furthermore, the first sealing ring is tightly fitted to the outer ring of the inner cylinder, and the second sealing ring is tightly fitted to the inner ring of the explosion-proof can body.

[0023] By adopting the above technical solution, the tight fit between the sealing ring and the corresponding component can eliminate the sealing gap, completely isolate external impurities from contact with the sandbag, further ensure the dryness and fluidity of the sand, and ensure the structural stability and functional reliability of the entire protection system.

[0024] In summary, the present invention has the following main advantages: 1. This utility model, through the design of an inner cylinder, an energy-absorbing bracket, and a guide groove, ensures that when the inner cylinder cannot withstand the explosive impact and is damaged, the inner cylinder will compress the energy-absorbing bracket. The guide groove concentrates the stress, causing the energy-absorbing bracket to collapse and deform after absorbing the impact force, so that its overall shape is compressed and folded like an accordion, reducing the transmission of impact force. Energy is absorbed through metal collapse deformation, which is not easily damaged, has high reliability, and has a good energy absorption effect. 2. This utility model, through the use of sandbags, ensures that when the inner cylinder is damaged and fragments are generated, the fragments will pierce the sandbags and come into contact with the sand inside. During this process, the sand grains inside the sandbags will experience intense friction, compression, and displacement with other sand grains and fragments. In this process, the kinetic energy of the fragments will be largely consumed through frictional heat generation and the work done by pushing the sand grains. Furthermore, the friction between the sand and the fragments can have a certain blunting effect, reducing the sharp burrs on the edges of the fragments. Moreover, using bagged sand instead of loose sand, the sand is divided into multiple units by the bags, making it less susceptible to settling and compaction due to gravity, resulting in better stability. It can leave more gaps, reducing the phenomenon of sand piles being too dense and compacted, and preventing sand from entering the energy-absorbing box and affecting its collapse. In addition, the sand bags are inexpensive, making it a low-cost and efficient protective structure. It also increases the protected area, providing protection even in areas where there is no energy-absorbing box due to space constraints, and can work together with the energy-absorbing box for protection. 3. This utility model, through the setting of the cover plate, seals the sandbag, reducing the phenomenon of sand clumping caused by external rainwater and other moisture entering, and ensuring the fluidity of the sand to a great extent, thereby improving the protective effect; it also facilitates waterproofing the sandbag. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the inner cylinder structure of this utility model; Figure 4 This is a schematic diagram of the energy-absorbing support structure of this utility model; Figure 5 This is a schematic diagram of the cover plate structure of this utility model.

[0026] In the diagram: 1. Explosion-proof tank body; 2. Explosion-proof cover; 3. Pressure relief plate; 4. Handle; 5. Inner cylinder; 6. Sandbag; 7. Energy-absorbing bracket; 8. Guide groove; 9. Cover plate; 10. First sealing ring; 11. Second sealing ring. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of this utility model will be described below based on its overall structure.

[0029] Example 1: A type of explosion-proof container, such as Figures 1-4 As shown, the device includes an explosion-proof canister body 1. Inside the explosion-proof canister body 1, an inner cylinder 5 is connected via an energy-absorbing bracket 7. Both the explosion-proof canister body 1 and the inner cylinder 5 are made of high-strength alloy steel, while the energy-absorbing bracket 7 is made of aluminum alloy. The energy-absorbing bracket 7 is fully welded to the inner cylinder 5 and spot-welded to the explosion-proof canister body 1. Multiple guide grooves 8 are provided at the top and bottom of the energy-absorbing bracket 7. Sandbags 6 and cover plates 9 are respectively installed between the inner cylinder 5 and the explosion-proof canister body 1. Multiple sandbags 6 and energy-absorbing brackets 7 are provided, arranged in a circular array. If the impact force is too great and the inner cylinder 5 cannot withstand it and is damaged, the inner cylinder 5 will squeeze the energy-absorbing bracket 7 outwards. At this time, the guide grooves 8 at the top and bottom of the energy-absorbing bracket 7 will concentrate the explosive impact force, causing the energy-absorbing bracket 7 to undergo a collapsing deformation along the guide grooves 8, similar to an accordion fold. The inherent collapse process of the aluminum alloy material effectively absorbs the explosive impact, significantly reducing the transmission of the impact force to the explosion-proof canister body 1, ensuring the stability of the main structure and achieving reliable energy absorption. Simultaneously, damage to the inner cylinder 5 generates explosive fragments, which move outward and pierce the annular array of sandbags 6. After entering the sandbags 6, the fragments undergo intense friction, compression, and relative displacement with the sand grains inside the bags and between the sand grains. During this process, the kinetic energy of the fragments is largely consumed through frictional heat generation and the work done by pushing the sand grains. At the same time, the sand grains blunt the sharp burrs on the edges of the fragments, reducing the risk of secondary injury from the fragments. Furthermore, the sandbags 6 divide the sand into independent units, preventing the bulk sand from densely accumulating due to gravity settling. This not only preserves the gaps between sand grains to ensure a buffering effect but also prevents sand from entering the energy-absorbing support 7 and affecting its collapse deformation. It can also cover areas where the energy-absorbing support 7 is not installed, achieving low-cost and comprehensive fragment protection.

[0030] See Figure 1In the above embodiment, an explosion-proof cover 2 is connected to the top of the explosion-proof container body 1. The explosion-proof cover 2 is threadedly connected to the explosion-proof container body 1. Four handles 4 are fixed around the explosion-proof cover 2. In use, the staff puts the hazardous materials into the inner cylinder 5, and then the staff puts the explosion-proof cover 2 on the explosion-proof container body 1 and tightens it by rotating the explosion-proof cover 2 with the handles 4. Then the staff can transfer the hazardous materials by means of a carrier, or temporarily store the hazardous materials, or handle the hazardous materials on site. A pressure relief plate 3 is provided on the top of the explosion-proof cover 2. The pressure relief plate 3 can release the pressure upwards to prevent the pressure from accumulating inside the explosion-proof container.

[0031] Example 2: Based on the above embodiment one, the following settings are made to facilitate disassembly and assembly.

[0032] See Figure 2 In the above embodiment, the cover plate 9 is detachably connected to the explosion-proof can body 1 and the inner cylinder 5 by bolts, which facilitates sealing after filling with sandbags 6 and makes it easy to replace sandbags 6 during subsequent maintenance.

[0033] Example 3: Based on the above embodiment one, the following settings are now implemented to increase waterproofing.

[0034] See Figure 5 In the above embodiment, the inner ring of the cover plate 9 is connected to a first sealing ring 10, and the outer ring of the cover plate 9 is connected to a second sealing ring 11. The first sealing ring 10 is tightly fitted with the outer ring of the inner cylinder 5, and the second sealing ring 11 is tightly fitted with the inner ring of the explosion-proof tank body 1. The cover plate 9, together with the first sealing ring 10 and the second sealing ring 11, increases the sealing performance and reduces the phenomenon of water and moisture entering and wetting the sand, causing clumping.

[0035] The implementation principle of this utility model is as follows: First, during production, workers weld one end of multiple energy-absorbing brackets 7 to the outer ring of the inner cylinder 5 to ensure that the inner cylinder 5 can stably transmit force to the energy-absorbing brackets 7. After the inner cylinder 5 and the energy-absorbing brackets 7 are placed inside the explosion-proof can body 1, workers connect the other end of the energy-absorbing brackets 7 to the inner ring of the explosion-proof can body 1 by spot welding. This serves two purposes: first, it limits the movement of the energy-absorbing brackets 7 and the inner cylinder 5 within the explosion-proof can body 1 during subsequent use; second, because it is spot welding, the connection surface is small, making it easier to replace parts inside the explosion-proof can body 1 later. When disassembling, the weld points can be cut off, which is easier than full welding. Then, the workers fill the sandbags with sand and seal them to prevent the sand from flowing out. Then, the workers put the sandbags 6 into the gap between the explosion-proof can body 1 and the inner cylinder 5. It is necessary to avoid putting too many sandbags 6 to leave space for the sand to flow, so that the energy-absorbing bracket 7 can collapse and deform normally. Finally, the workers put in the cover plate 9 and lock it with bolts. With the first sealing ring 10 and the second sealing ring 11, the sealing performance is increased, reducing the phenomenon of water and moisture entering and wetting the sand and causing it to clump. When in use, the staff put the dangerous goods into the inner cylinder 5, and then the staff put the explosion-proof cover 2 on the explosion-proof container body 1 and tightened it by rotating the explosion-proof cover 2 through the handle 4. Then the staff can transfer the dangerous goods through the carrier, or temporarily store the dangerous goods, or handle the dangerous goods on site. When the explosive inside the inner cylinder 5 explodes, the inner cylinder 5 first directly bears the initial impact force generated by the explosion: if the impact force does not exceed the bearing limit of the inner cylinder 5, the inner cylinder 5 can directly constrain the explosion energy to prevent it from spreading outward too early, and the pressure relief plate 3 can release the pressure upward to prevent the pressure from accumulating inside the explosion-proof tank. If the impact force is too great and the inner cylinder 5 cannot withstand it and is damaged, the inner cylinder 5 will squeeze the energy-absorbing bracket 7 outward. At this time, the guide grooves 8 at the top and bottom of the energy-absorbing bracket 7 will concentrate the explosive impact force, causing the energy-absorbing bracket 7 to undergo a collapsing deformation similar to accordion folding along the guide grooves 8. Through the collapse process of the aluminum alloy material itself, the explosive impact force is fully absorbed, greatly reducing the transmission of the impact force to the explosion-proof can body 1, ensuring the stability of the main structure and achieving reliable energy absorption. At the same time, the damage to the inner cylinder 5 will generate explosive fragments, which will move outward and pierce the ring array of sandbags 6: the fragments enter the sandbags. After 6, there will be intense friction, compression and relative displacement between the sand particles in the bag and between the sand particles. During this process, the kinetic energy of the fragments is consumed in large quantities through frictional heat generation and pushing the sand particles to do work. At the same time, the sand particles blunt the sharp burrs on the edges of the fragments, reducing the risk of secondary damage from the fragments. In addition, the sandbag 6 divides the sand into independent units, preventing the loose sand from being tightly packed due to gravity settling. It retains the gaps between the sand particles to ensure the buffering effect, prevents the sand from entering the energy-absorbing support 7 and affecting its collapse and deformation, and can also cover the area where the energy-absorbing support 7 is not set up, achieving low-cost and comprehensive fragment protection.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A safety explosion-proof container, comprising an explosion-proof container body (1), characterized in that: The explosion-proof tank body (1) is connected to an inner cylinder (5) by an energy-absorbing bracket (7), and the energy-absorbing bracket (7) is provided with multiple guide grooves (8) at the top and bottom. Sandbags (6) and cover plates (9) are respectively provided between the inner cylinder (5) and the explosion-proof tank body (1).

2. The safety explosion-proof container according to claim 1, characterized in that: The explosion-proof tank body (1) and inner cylinder (5) are both made of high-strength alloy steel, and the energy-absorbing bracket (7) is made of aluminum alloy.

3. The safety explosion-proof container according to claim 2, characterized in that: The energy-absorbing bracket (7) is fixed to the inner cylinder (5) by full welding, and the energy-absorbing bracket (7) is connected to the explosion-proof tank body (1) by spot welding.

4. The safety explosion-proof container according to claim 3, characterized in that: Multiple sandbags (6) and energy-absorbing supports (7) are provided, and the multiple sandbags (6) and energy-absorbing supports (7) are distributed in a ring array.

5. The safety explosion-proof container according to claim 1, characterized in that: The explosion-proof tank body (1) is connected to an explosion-proof cover (2) on the top, and four handles (4) are fixed around the explosion-proof cover (2). A pressure relief plate (3) is provided on the top of the explosion-proof cover (2).

6. The safety explosion-proof container according to claim 5, characterized in that: The explosion-proof cover (2) is threadedly connected to the explosion-proof tank body (1).

7. The safety explosion-proof container according to claim 1, characterized in that: The cover plate (9) is detachably connected to the explosion-proof tank body (1) and inner cylinder (5) respectively by bolts.

8. The safety explosion-proof container according to claim 7, characterized in that: The inner ring of the cover plate (9) is connected to a first sealing ring (10), and the outer ring of the cover plate (9) is connected to a second sealing ring (11).

9. The safety explosion-proof container according to claim 8, characterized in that: The first sealing ring (10) is tightly fitted to the outer ring of the inner cylinder (5), and the second sealing ring (11) is tightly fitted to the inner ring of the explosion-proof tank body (1).

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