Combined explosion-proof wall convenient to set mechanically

Abstract

The invention relates to the technical field of engineering protection, in particular to a combined type explosion-proof wall convenient to mechanically arrange, when the combined type explosion-proof wall structure is a flexible explosion-proof structure, the combined type explosion-proof wall structure is designed to be a structure with a hollow cavity, a double-layer film structure is arranged in the hollow cavity, and the double-layer film structure is arranged in the hollow cavity. The double-layer membrane structure is filled with gas and liquid; the whole explosion-proof wall is of a prism body structure with the cross section being an isosceles triangle, and a connecting part and a charging and discharging part are arranged on the front end face and the side face of the wall body respectively. The method has the advantages of being short in construction time and easy and convenient to operate, and meanwhile, the impact force of explosion is effectively reduced through energy dissipation and energy absorption on impact waves after the explosion load is borne, and the purpose of protecting a protection target is achieved. The device further has the advantages of being light, foldable, convenient to transport and low in manufacturing cost, especially in special environments with much water, little sand and the like, the reinforcement task can be completed with high efficiency and low cost, and the requirement for high timeliness of first-aid repair reinforcement under the emergency situation is better met.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering protection, and particularly to a combined explosion-proof wall that is convenient for mobile installation. Background Art

[0002] Explosions and impacts have a very strong destructive effect on structures. Buildings such as hospitals and schools, as well as important facilities such as oil depots, are all at risk of accidental explosions, which may pose safety threats to surrounding facilities and personnel and cause damage to the surrounding environment. The damage caused by accidental explosions to important facilities is mainly the damage of explosion shock waves. Anti-explosion measures mainly include increasing the protection distance, anti-explosion reinforcement, and setting up protective structures, etc. For existing important facilities, the damage caused by accidental explosions can be dealt with by increasing the protection distance, but this method has high requirements for the on-site space and is not easy to implement. Another method is to adopt anti-explosion reinforcement measures such as increasing the cross-section, adding support members, and adding anti-explosion coatings. Although it can improve the safety and reliability of the facilities, it requires reinforcement materials with high strength, good corrosion resistance, and durability. For areas with special locations and limited conditions, the materials are not easy to obtain, and often do not have the operating conditions for anti-explosion reinforcement. Moreover, anti-explosion reinforcement construction is relatively complex, time-consuming, and the cost is relatively high, which cannot meet the emergency protection requirements.

[0003] Setting up a protective structure at a certain distance outside the facility can effectively protect against explosion shock waves and ensure the safety of important facilities and the personnel inside. This means is widely used in building engineering protection, economic target protection, and partial military target protection; the external protective structure can be a permanent wall specially designed for anti-explosion, or a temporarily set protective structure. Similar to anti-explosion reinforcement, setting up a permanent wall has disadvantages such as being time-consuming and is not suitable for emergency protection. Summary of the Invention

[0004] The purpose of the present invention is to propose a combined explosion-proof wall that is convenient for mobile installation in view of the prior art, so as to solve the problems in the prior art that the explosion-proof structure is large in volume, inconvenient to use, the anti-explosion reinforcement construction is relatively complex, time-consuming, and the cost is relatively high, and it cannot meet the emergency protection requirements.

[0005] To achieve the above object of the invention, the present invention adopts the following technical solutions: A combined explosion-proof wall that is convenient for mobile installation. When the structure of the combined explosion-proof wall is a flexible explosion-proof structure, the structure of the combined explosion-proof wall is designed to have a hollow cavity, a double-layer film structure is arranged in the hollow cavity, and gas and liquid are filled in the double-layer film structure; the overall explosion-proof wall is a main structure of an isosceles triangular prism in cross-section, and connecting components and filling and discharging components are respectively arranged on the front end face and the side face of the wall body.

[0006] The double-layer film structure includes a fiber drawing arranged at the central position; the upper and lower layers of the fiber drawing are jointly composed of a base cloth, a first coating, and a second coating that are symmetrically arranged and are arranged from the inside out.

[0007] The connecting components include impact-resistant plate hanging points arranged at equal intervals on the top of the front end face of the explosion-proof wall and a webbing handle, a nylon hook-and-loop fastener, and a lashing buckle arranged on the side end face of the explosion-proof wall.

[0008] The charging and discharging components include an exhaust pressure relief valve arranged on the top of the explosion-proof wall body, an intake valve A arranged below it, an intake valve B arranged at the lower part of the side end face of the explosion-proof wall, and a liquid injection and drainage valve.

[0009] A water level observation point is also arranged at the upper end of the front end face of the explosion-proof wall body.

[0010] The base cloth is a high-strength fiber polyvinyl chloride composite cloth; the coatings of the first coating and the second coating are polyurea.

[0011] The exhaust pressure relief valves are arranged in rows at equal intervals on the top of the explosion-proof wall body.

[0012] The nylon hook-and-loop fastener and the lashing buckle are installed in a mutually adapted manner.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The combined explosion-proof wall designed by the present invention utilizes the characteristics of structural flexibility and non-flexibility of the filling. It has a short construction time, simple and convenient operation. After being subjected to an explosion load, it can generate large deformation energy dissipation, reflect shock waves, reduce the shock wave pressure by flow around, and the gas-liquid filling material can be atomized and scattered to absorb energy and cool down. It has strong explosion-proof ability, strong shock absorption and coordinated energy dissipation ability, and can fully dissipate the impact force of the explosion to achieve the purpose of protecting important facilities.

[0014] (2) The combined explosion-proof wall designed by the present invention is convenient for mobile installation, mainly filled with gas and liquid. The filling material is easy to obtain, and it has the advantages of convenience, environmental protection, and low cost; and the main body is a high-strength fiber composite cloth, which is light in weight, soft and easy to fold, has the characteristics of corrosion resistance, heat resistance, insulation, etc., and occupies a small space after being packed, can be stacked for storage, and does not require mechanical support, etc. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a side view of the present invention Figure 1 ; Figure 3 is a side view of the present invention Figure 2 ; Figure 4 is a cross-sectional view of the present invention; Figure 5Schematic diagram of the double-layer film structure in the present invention; Figure 6 Comparison chart of the front and rear shock wave test curve results of the present invention.

[0016] Wherein: 1. Explosion-proof wall, 2. Fiber drawing, 3. Base fabric, 4. First coating, 5. Second coating, 6. Hanging point of impact-proof plate, 7. Webbing handle, 8. Nylon fastener, 9. Tie-down lock, 10. Exhaust pressure relief valve, 11. Intake valve A, 12. Intake valve B, 13. Liquid injection and discharge valve, 14. Water level observation point. Specific embodiments

[0017] The following further elaborates on the present application in conjunction with specific embodiments. The following embodiments are provided in combination with the content of the present invention, but the present invention is not limited to the following embodiments: As Figures 1 to 6 shown, a combined explosion-proof wall that is convenient for mobile setting. When the structure of the combined explosion-proof wall 1 is a flexible explosion-proof structure, the structure of the combined explosion-proof wall 1 is designed to have a hollow cavity, a double-layer film structure is arranged in the hollow cavity, and gas and liquid are filled in the double-layer film structure; the overall explosion-proof wall 1 is a cross-section of an isosceles triangular prism main body structure, and connecting components and charging and discharging components are respectively arranged on the front end face and the side face of the wall; the advantage of using a triangular structure for the explosion-proof wall 1 here is that the triangular structure has good stability and can remain upright without overturning under the action of positive and negative pressure of the shock wave; wherein Figure 6 are the example results of the present invention. By comparing the peak value changes of the shock wave at the same distance with and without the combined explosion-proof wall, the results show that the present invention can significantly reduce the peak value of the explosion shock wave, and the actual effect shows that the combined explosion-proof wall can effectively protect the target under the explosion impact.

[0018] The double-layer film structure includes a fiber drawing 2 arranged at the central position; the upper and lower layers of the fiber drawing 2 are jointly composed of a base fabric 3, a first coating 4, and a second coating 5 that are symmetrically arranged from the inside to the outside; the base fabric 3 is a high-strength fiber polyvinyl chloride composite fabric; the coatings of the first coating 4 and the second coating 5 are polyurea. After spraying the polyurea coating as required, it has good anti-cutting and piercing ability, and the durability can be greatly improved; here, the double-layer film structure of the fiber drawing 2 formed by the wire drawing process is adopted inside the protection structure body of the explosion-proof wall 1, and the surface layer is a high-strength fiber composite fabric. Using this film structure with fine fiber tie-downs, when filling gas and liquid, the structure can maintain a good shape and will not bulge, which is beneficial for making a larger-sized structure; in addition, due to the fine fiber drawing 2 in the structure evenly tying down the two layers, the tie-down force can reach the megapascal level, enabling the explosion-proof structure to remain intact under the action of the reflected wave and tensile wave generated after the explosion shock wave reaches its surface.

[0019] The connecting components include impact-resistant plate hanging points 6 arranged at equal intervals on the top of the front end face of the explosion-proof wall 1, and a webbing handle 7, a nylon fastener 8 and a latching buckle 9 arranged on the side end face of the explosion-proof wall 1; the nylon fastener 8 and the latching buckle 9 are adaptively installed. Multiple adjacent explosion-proof walls 1 are connected and fixed through the latching buckle 9, and the nylon fasteners 8 of adjacent explosion-proof walls are adhered to each other, which can also improve the connection strength and ensure the smooth and beautiful surface of the explosion-proof wall. Here, an impact-resistant plate can be flexibly installed on the explosion-facing surface of the explosion-proof wall 1 through the impact-resistant plate hanging points 6, which can not only prevent flying objects, shrapnel, etc. caused by the explosion from accidentally damaging the surface of the protective structure, effectively increasing the number of uses and service life of the flexible explosion-proof structure, but also increasing the performance of the flexible explosion-proof structure against shock waves; the charging and discharging components include an exhaust pressure relief valve 10 arranged on the top of the wall body of the explosion-proof wall 1, an intake valve A 11 arranged below it, an intake valve B 12 and a liquid injection and drainage valve 13 arranged at the lower part of the side end face of the explosion-proof wall 1. The intake valve A 11 arranged at the top here can be used to adjust the air pressure inside the explosion-proof wall after water injection and supplement the air pressure after use, facilitating the use and reuse of the explosion-proof wall; a water level observation point 14 is also arranged at the upper end of the front end face of the wall body of the explosion-proof wall 1; the exhaust pressure relief valves 10 are arranged in rows at equal intervals on the top of the wall body of the explosion-proof wall 1.

[0020] When the present invention is in use, multiple explosion-proof wall bodies are usually combined for use. First, after each explosion-proof wall 1 is unfolded, it is connected by a nylon fastener 8 and a latching buckle 9, and then the explosion-proof wall 1 structure unit can be inflated through the intake valve A 11 and the intake valve B 12 to make it stand upright. The top intake valve A 11 can be used to adjust the air pressure inside the explosion-proof wall after water injection and supplement the air pressure after use, facilitating the use and reuse of the explosion-proof wall. After adjusting the set position, liquid is injected through the liquid injection and drainage valve 13. When injecting liquid, the exhaust pressure relief valve 10 automatically exhausts and relieves pressure to ensure that there is a certain pressure of gas inside; after injecting the liquid to the predetermined height, all valve openings are tightened, and then it can be put into use; when it needs to be reused, it is inflated through the intake valve A 11 and the intake valve B 12. At the same time, according to different application requirements of the actual site, an explosion-proof plate or other explosion-proof materials can be flexibly installed by using the impact-resistant plate hanging points 6, which can not only prevent accidental damage to the wall body of the explosion-proof wall 1 by other explosives, improve the service life of the flexible explosion-proof structure, but also increase the performance of the flexible explosion-proof structure against shock waves.

[0021] The working mechanism of the present invention is as follows: The explosive air shock wave propagates to the protective structure. Under the action of the shock wave, the protective structure undergoes large deformation to consume energy. And due to the high wave impedance of the liquid in the protective structure relative to the air medium, a very strong reflected shock wave will be generated instantaneously. Subsequently, the explosive air shock wave forms a circulation near the wall. The circulation and a part of the original incident shock wave form a new shock wave with a relatively complex shape and propagate outward from near the protective structure. The intensity of this new shock wave is much smaller than that in the case without a protective structure, directly resulting in a significant reduction in the shock wave pressure transmitted to the protected target. If the protective structure is destroyed, the liquid inside will spurt out due to the rupture of the external composite high-strength fiber layer. The fine liquid will form a barrier to further block and attenuate the explosive shock wave, significantly reducing the explosive power of the explosive.

[0022] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A modular explosion-proof wall that is easy to install, characterized by: When the combined explosion-proof wall (1) structure is a flexible explosion-proof structure, the combined explosion-proof wall (1) structure is designed to have a hollow cavity, a double-layer membrane structure is arranged in the hollow cavity, and gas and liquid are filled in the double-layer membrane structure; the explosion-proof wall (1) as a whole is an isosceles triangular prism main body structure with a cross section, and connecting components and charging and discharging components are respectively arranged on the front end face and side faces of the wall.

2. The modular explosion-proof wall that is easy to install as claimed in claim 1 is characterized in that: The double-layer membrane structure comprises a fiber drawstring (2) arranged at a central position; the upper and lower layers of the fiber drawstring (2) are composed of a base fabric (3) symmetrically arranged from the inside to the outside, a first coating (4) and a second coating (5).

3. The modular explosion-proof wall that is easy to install as claimed in claim 1 is characterized in that: The connecting components include impact plate hanging points (6) arranged at equal intervals on the top of the front end surface of the explosion-proof wall (1), and a webbing handle (7), a nylon hook and loop fastener (8) and a tie lock buckle (9) arranged on the side end surface of the explosion-proof wall (1).

4. The modular explosion-proof wall that is easy to install as claimed in claim 1 is characterized in that: The charging and discharging components include an exhaust pressure relief valve (10) arranged at the top of the explosion-proof wall (1), an air intake valve A (11) arranged below the exhaust pressure relief valve, and an air intake valve B (12) and a liquid injection and discharge valve (13) arranged at the lower part of the side end surface of the explosion-proof wall (1).

5. The modular explosion-proof wall that is easy to install as claimed in claim 1 is characterized in that: A water level observation point (14) is also provided at the upper end of the front surface of the explosion-proof wall (1).

6. The modular explosion-proof wall that is easy to install as claimed in claim 2, characterized in that: The base fabric (3) is a high-strength fiber polyvinyl chloride composite fabric; the first coating (4) and the second coating (5) are made of polyurea.

7. The modular explosion-proof wall that is easy to install as claimed in claim 4 is characterized in that: The exhaust pressure relief valves (10) are arranged in rows at equal intervals on the top of the explosion-proof wall (1).

8. The modular explosion-proof wall that is easy to install in a mobile manner as claimed in claim 3, characterized in that: The nylon hook and loop fastener (8) and the tie-lock fastener (9) are adapted to be installed with each other.

Images