Polyhedral barrier explosion-proof composite structure

Abstract

The utility model belongs to the technical field of blocking and explosion prevention, and particularly relates to a polyhedral blocking and explosion-proof composite structure which comprises an inner ring, a supporting body and an outer ring which are coaxially arranged from inside to outside, the inner ring and the outer ring are both of a barrel structure, the outer contour of the inner ring is a cylinder, the outer contour of the outer ring is a regular polygon prism, and the supporting body is arranged on the inner ring. The supporting bodies are a plurality of flat plates which are annularly and uniformly distributed between the inner ring and the outer ring; a plurality of elliptical holes and a plurality of groups of fins are uniformly distributed on the wall body of the outer ring; and each group of fins comprises a plurality of fins which are axially parallel to the outer ring and extend outwards. Compared with the prior art, the composite structure has the advantages that the inner ring, the outer ring and the supporting body form a plurality of cavities, and the fins are matched with the container to form the cavities, so that the cost is reduced, the propagation of flames can be effectively restrained, explosion pressure waves are sharply reduced, and the explosion-proof capability is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion isolation and prevention, and particularly relates to a polyhedron explosion isolation and prevention composite structure. Background Art

[0002] The explosion isolation and prevention technology is a technology that can effectively prevent the explosion of flammable and explosive gaseous and liquid chemicals caused by accidental accidents (such as static electricity, electric welding, shooting, collision, incorrect operation, etc.) during the storage and transportation process. Installing explosion isolation and prevention materials with explosion-proof functions inside the container can fundamentally solve the problems of flammability and explosiveness that occur during the storage, transportation, and use of flammable and explosive liquid and gaseous hazardous chemicals.

[0003] The explosion isolation and prevention materials are generally honeycomb structures, which can divide the interior of the containers for storing and transporting flammable and explosive liquid and gaseous hazardous chemicals into several "small chambers" or "cavities". These "small chambers" or "cavities" can effectively contain the spread of flames and sharply attenuate the explosion pressure wave. At the same time, this honeycomb-structured material has a high surface efficiency per unit volume, so it has good heat absorption. It can quickly absorb the heat released by combustion, reduce the temperature after the combustion reaction, shrink the expansion degree of the reaction gas, and increase the pressure value in the container not much, so that the combustion speed cannot reach the explosion limit speed, thus achieving the purpose of explosion prevention.

[0004] At present, the explosion isolation and prevention materials are divided into metal explosion isolation and prevention materials and non-metal explosion isolation and prevention materials. Among them, the metal explosion isolation and prevention materials mainly use aluminum alloy metal materials, which are formed into a reticular structure after wire drawing and then rolled into a bulk material with a reticular structure. However, the aluminum alloy material is relatively active, prone to react with the active substances in flammable and explosive hazardous chemicals, and has low self-structural strength. It is prone to problems such as collapse and slag falling during the long-term contact with the medium, and it also pollutes the medium.

[0005] The non-metal explosion isolation and prevention materials include polyurethane explosion isolation and prevention materials and thermoplastic resin explosion isolation and prevention materials. Among them, the polyurethane explosion isolation and prevention materials have poor chemical resistance stability, are prone to oxidation and hydrolysis, and have obvious swelling phenomena, which is not conducive to the long-term use of containers for storing, transporting, and using flammable and explosive dangerous goods.

[0006] The thermoplastic resin barrier explosion-proof material is a kind of barrier explosion-proof material using the injection molding process that emerged in recent years. However, there is a significant defect in the thermoplastic resin-based barrier using the injection resin molding process. Its production cost is relatively high, and precise injection molding machines and high-precision molds are required for production. The price reaches several times that of aluminum alloy-based barrier materials, and its market acceptance is low in terms of promotion and use. Especially when it is applied to large containers such as road transportation and hazardous chemicals, as the volume of the container increases, the consumption of the thermoplastic resin-based barrier explosion-proof material using the injection molding process is large, the cost increases, and the price of using the barrier explosion-proof material may be higher than the price of the tank body. Currently, the research on thermoplastic resin barrier explosion-proof materials is not yet systematic, and there are still problems such as easy collapse and deformation. Summary of the Invention

[0007] To solve the above technical problems of high structural cost and poor explosion-proof ability, the present invention provides a polyhedron barrier explosion-proof composite structure.

[0008] The purpose of the present invention is achieved by the following technical solutions. A polyhedron barrier explosion-proof composite structure according to the present invention includes an inner ring, a support body, and an outer ring coaxially arranged from the inside out. Both the inner ring and the outer ring are cylindrical structures. The outer contour shape of the inner ring is a cylinder, and the outer contour shape of the outer ring is a regular polyhedron. The support body is a plurality of flat plates evenly distributed circumferentially between the inner ring and the outer ring. A plurality of elliptical holes and multiple groups of fins are evenly distributed on the wall of the outer ring. Each group of fins includes a plurality of fins parallel to the axis of the outer ring and extending outward.

[0009] Further, the outer ring includes a plurality of circumferentially distributed flat surfaces or outwardly convex arc surfaces.

[0010] Further, the inner diameter of the outer ring is 20 - 100 mm.

[0011] Further, the support body is a plurality of radially arranged flat plates. One side of the flat plate is arranged on the outer wall of the inner ring, and the other side is arranged at the corners of the inner wall of the outer ring.

[0012] Further, the two end faces of the inner ring, the two end faces of the outer ring, and the two side edges in the length direction of the support body are correspondingly flush.

[0013] Further, the outer ring, the inner ring, and the support body are rigidly connected into a whole.

[0014] Further, a number of groups of elliptical holes evenly distributed circumferentially are arranged on the wall of the outer ring. The elliptical holes penetrate the wall. The length direction of the elliptical holes is parallel to the axis of the composite structure and is arranged between two adjacent edges of the outer ring.

[0015] Further, the size of the elliptical holes is 3.5 x 9 mm.

[0016] Furthermore, a group of fins is provided at both ends of the surface between adjacent edges of the outer ring, and each group of fins includes a plurality of fins parallel to each other.

[0017] Compared with the prior art, the utility model is beneficial in that:

[0018] The composite structure of the utility model forms a plurality of chambers through the inner ring, the outer ring and the support body, and forms the chambers through the cooperation of the fins and the container, which can effectively curb the spread of flames, sharply reduce the explosion pressure wave and enhance the explosion-proof capability while reducing the cost.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of a first embodiment of a polyhedron barrier explosion-proof composite structure of the utility model;

[0021] Figure 2 for Figure 1 A front view of

[0022] Figure 3 It is a side view of a second embodiment of a polyhedron barrier explosion-proof composite structure of the utility model;

[0023] Figure 4 for Figure 3 A front view of

[0024] Figure 5 It is a side view of a third embodiment of a polyhedron barrier explosion-proof composite structure of the utility model;

[0025] Figure 6 for Figure 5 A front view of

[0026] Figure 7 It is a side view of a fourth embodiment of a polyhedron barrier explosion-proof composite structure of the utility model;

[0027] Figure 8 for Figure 7 Front view of .

[0028] [Reference Signs]

[0029] 1-inner ring, 2-support body, 3-outer ring, 4-wall body, 5-elliptical hole, 6-fin. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0031] Embodiment 1 of a polyhedron barrier explosion-proof composite structure of the present utility model is as Figures 1 to 2 shown. This structure includes an inner ring 1, a support body 2, and an outer ring 3 that are coaxially arranged in sequence from the inside out. The inner ring 1 and the outer ring 3 are cylindrical structures, and the outer contour shape of the outer ring 3 is a polyhedron. In this embodiment, the outer contour shape of the outer ring 3 is a regular octagonal prism. The outer contour shape of the inner ring 1 is a cylinder, and the support body 2 is composed of multiple flat plates that are radially and circumferentially distributed. One side of the flat plate is arranged on the outer wall of the inner ring 1, and the other side is arranged on the inner wall of the outer ring 3. In this embodiment, the support body 2 includes eight flat plates. One side of the flat plate is vertically arranged on the outer wall of the inner ring 1, and the other side is arranged at the corner position of the outer ring 3, so that the eight flat plates are evenly distributed circumferentially, and the length and width of each flat plate are equal. The two end faces of the inner ring 1, the two end faces of the outer ring 3, and the two side edges in the length direction of the support body 2 are correspondingly flush.

[0032] The outer ring 3, the inner ring 1, and the support body 3 are rigidly connected to form an integral body. In this embodiment, this composite structure is integrally formed by an extrusion process.

[0033] The inner ring 1, the outer ring 3, and the support body 2 form multiple cavities, which can effectively contain the spread of flames and cause the explosion pressure to decay rapidly. The support body 2 can play the role of a reinforcing rib.

[0034] A number of groups of elliptical holes 5 that are evenly distributed circumferentially are arranged on the wall body 4 of the outer ring 3, and the elliptical holes 5 penetrate the wall body 4. In this embodiment, the length direction of the elliptical holes 5 is parallel to the axial direction of this composite structure and is arranged between two adjacent edges of the outer ring 3. The outer ring 3 is an octagonal prism, and its outer surface includes two end faces and eight planes that are circumferentially distributed. A group of elliptical holes 5 is arranged on the plane of the outer ring 3, and each group includes two elliptical holes 5. The outer ring 3 is provided with a group of elliptical holes 5 every other plane, and a total of four groups of elliptical holes 5 are arranged. In this embodiment, the size of the elliptical holes is 3.5x9mm, avoiding a reduction in structural strength when the size of the elliptical holes is too large, and at the same time avoiding affecting the circulation of the internal combustible and explosive gases when the size is too small.

[0035] The arrangement of the elliptical holes 5 increases the propagation channels of the combustible and explosive gases, and the directional change of the propagation channels further enhances the ability to gradually weaken the propagation ability of the combustible and explosive gases.

[0036] At both ends of the plane of the outer ring 3, a set of fins 6 is provided. Each set of fins 6 includes a plurality of parallel fins 6. The length direction of the fins 6 is parallel to the axial direction of the outer ring 3. The root of the fins 6 is provided on the plane of the outer ring 3 and extends outward. In this embodiment, two sets of fins 6 are provided at intervals of one plane on the outer ring 3, so that the fins 6 and the elliptical holes 5 are staggered and distributed on the outer surface of the outer ring 3. The outer contour formed by each set of fins 6 matches the inner wall of the installed container, which is convenient for installing the composite structure in the container and can better adhere to the inner wall of the container. Through the cooperation between the fins 6 and the inner wall of the container, the chamber can also be increased, and the explosion-proof ability can be greatly increased without significantly increasing the cost.

[0037] The inner diameter of the outer ring 3 is 20 - 100 mm, which is convenient for filling the composite structure and avoids the decline of its performance.

[0038] The mass percentages of the raw materials for preparing the barrier explosion-proof material of the composite structure are as follows: polyamide resin: 80.35% - 83.87%, antistatic agent: 9% - 11%, flame retardant: 5 - 7%, lubricant: 0.2 - 1.6%; among them, the flame retardant is a compound mixture of expanded graphite and red phosphorus, and its mass ratio is: 2.3 - 3.6:3. The lubricant is a silicone masterbatch, and the silicone masterbatch includes silicon nitride and polyamide resin.

[0039] When using this composite structure, directly place the structure in the container, and then fill the container with flammable and explosive gaseous and liquid hazardous chemicals, which can prevent the occurrence of combustion, explosion and other dangerous problems of flammable and explosive liquid and gas hazardous chemicals during the Spring Festival transportation and use process.

[0040] Embodiment 2 of a polyhedral barrier explosion-proof composite structure of the present invention is as Figures 3 to 4 shown. The difference between this embodiment and Embodiment 1 is that the cross-section of the outer ring 3 is a regular pentagon, and each side is an outwardly convex arc. Five supports 2 are correspondingly provided. One side of it is provided on the outer wall of the inner ring 1, and the other side is provided at the corner of the outer ring 3. In order to ensure the uniform distribution of the elliptical holes 6, each arc surface is provided with elliptical holes 6, and fins (not shown in the figure) are provided at the ends of the arc surfaces.

[0041] Embodiment 3 of a polyhedral barrier explosion-proof composite structure of the present invention is as Figures 5 to 6 shown. The difference between this embodiment and Embodiment 1 is that the outer contour shape of the outer ring 3 is a regular pentagonal prism. Five supports 2 are correspondingly provided. One side of it is provided on the outer wall of the inner ring 1, and the other side is provided at the corner of the outer ring 3. In order to ensure the uniform distribution of the elliptical holes 6, each plane is provided with elliptical holes, and fins (not shown in the figure) are provided at the ends of the planes.

[0042] Embodiment 4 of a polyhedral barrier explosion-proof composite structure of the present invention is asFigures 7 to 8 As shown, the difference between this embodiment and the first embodiment is that the outer contour shape of the outer ring 3 is a regular hexagonal prism, and six corresponding support bodies 2 are provided. One side of each support body is arranged on the outer wall of the inner ring 1, and the other side is arranged at the edge of the outer ring 3.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyhedron barrier explosion-proof composite structure, characterized in that: It comprises an inner ring, a support body and an outer ring which are coaxially arranged from the inside to the outside, the inner ring and the outer ring are both cylindrical structures, the outer contour of the inner ring is a cylinder, the outer contour of the outer ring is a regular polygonal prism, the support body is a plurality of flat plates uniformly distributed in the circumferential direction between the inner ring and the outer ring; a plurality of elliptical holes are uniformly distributed on the wall of the outer ring; a group of fins are arranged at both ends of the surface between adjacent edges of the outer ring, each group of fins comprises a plurality of fins which are parallel to each other and are parallel to the axis of the outer ring and extend outward, and the outer contour formed by the groups of fins arranged on the wall of the outer ring matches the inner wall of the container on which it is installed.

2. The polyhedron barrier explosion-proof composite structure according to claim 1, characterized in that: The outer ring includes a plurality of circumferentially distributed flat surfaces or outwardly convex arc surfaces.

3. A polyhedron barrier explosion-proof composite structure according to claim 1 or 2, characterized in that: The inner diameter of the outer ring is 20-100mm.

4. The polyhedron barrier explosion-proof composite structure according to claim 1, characterized in that: The support body is a plurality of radial flat plates, one side of the flat plates is arranged on the outer wall of the inner ring, and the other side is arranged at the corner of the inner wall of the outer ring.

5. The polyhedron barrier explosion-proof composite structure according to claim 1, characterized in that: The end faces at both ends of the inner ring, the end faces at both ends of the outer ring, and the two side edges in the length direction of the support body are all flush with each other.

6. The polyhedron barrier explosion-proof composite structure according to claim 1, characterized in that: The outer ring, the inner ring and the support body are rigidly connected to form a whole.

7. The polyhedron barrier explosion-proof composite structure according to claim 1, characterized in that: The wall of the outer ring is provided with a plurality of groups of circumferentially evenly distributed elliptical holes, which penetrate the wall, have a length direction parallel to the axial direction of the composite structure, and are arranged between two adjacent edges of the outer ring.

8. The polyhedron barrier explosion-proof composite structure according to claim 1 or 7, characterized in that: The size of the oval hole is 3.5x9mm.

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