A fire barrier collar

Abstract

This utility model discloses a fire-arresting ring, comprising a fire-arresting ring body, a first ring, a second ring, and a splicing block 1. The first ring is disposed on the front of the fire-arresting ring body, and the second ring is disposed on the back of the first ring. A splicing block 1 is respectively installed on the left and right sides of the first ring, and a splicing block 2 is respectively disposed on the left and right sides of the second ring. Each splicing block 1 and splicing block 2 has two connecting holes on its front. The key feature is that graphene flame-retardant material is installed inside the first and second rings, and the graphene flame-retardant material is arranged in a cross-shaped pattern. The cross-shaped arrangement of the graphene flame-retardant material inside the first and second rings helps the graphene flame-retardant material to expand under heat during a fire while still providing support, enhancing its mechanical properties and resisting the impact of violent airflow generated by high temperatures.

Description

Technical Field

[0001] This utility model relates to the field of fire-resistant rings, and in particular to a fire-resistant ring. Background Technology

[0002] Fire collars (also called fireproof collars) are made of metal with a flame-retardant expanding core material inside. They are fitted onto the outer wall of rigid polyvinyl chloride (PVC) pipes and fixed to the floor or wall. When a fire occurs, the core material expands rapidly due to heat, squeezing the UPVC pipe and sealing the pipe opening in a short time, preventing the fire from spreading along the opening. This product has the advantages of compact structure, beautiful appearance, organic combination of leak prevention and fire protection, and convenient construction and installation.

[0003] In a fire, fire collars, as a critical fire barrier at pipe penetration points, not only need to withstand the direct erosion of high-temperature flames but also need to cope with the impact of violent airflows generated by the high temperature. The core expansion material of traditional fire collars (such as graphene-like substances) can rapidly expand to form a dense carbon layer after being heated, playing a role in physically isolating oxygen and blocking heat conduction. However, when the expansion body lacks effective structural support, its mechanical properties have significant shortcomings. Utility Model Content

[0004] The technical problem to be solved by this invention is to overcome the defects of the prior art and provide a fire arrestor ring.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a fire-retardant ring, comprising a fire-retardant ring body, a first ring body, a second ring body, and a splicing block 1. The fire-retardant ring body has a first ring body on its front side and a second ring body on its back side. A splicing block 1 is installed on the left and right sides of the first ring body, and a splicing block 2 is installed on the left and right sides of the second ring body. The front sides of splicing block 1 and splicing block 2 are respectively provided with two connecting holes. The fire-retardant ring is characterized in that graphene flame-retardant material is installed inside the first and second ring bodies, and the graphene flame-retardant material is arranged in a cross-shaped pattern.

[0007] As a preferred technical solution of this utility model, the cross-shaped graphene flame retardant material is composed of 4-8 mutually perpendicular oriented graphene sheets, with a spacing of 0.5-2mm between adjacent graphene sheets, and the direction of the graphene sheets forms an angle of 30°-60° with the axial direction of the pipe.

[0008] As a preferred technical solution of this utility model, the graphene flame retardant material is pre-embedded with nickel-titanium alloy memory fibers, the fiber diameter is 0.05-0.12mm, the bending radius R=0.8-1.5mm, and the volume ratio is 5-12%.

[0009] As a preferred embodiment of this utility model, a bushing is embedded in the connection hole between the splicing block one and the splicing block two.

[0010] As a preferred technical solution of this utility model, a micro-expansion buffer layer is provided between the first ring body and the second ring body. The buffer layer is a sodium silicate-based gel with a thickness of 0.2-0.5 mm and contains 30%-50% hollow glass microspheres (particle size 20-50 μm).

[0011] As a preferred technical solution of this utility model, glue is applied to the connection positions of the upper and lower ends of the graphene flame retardant material.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The first and second rings are equipped with graphene flame-retardant materials arranged in a cross pattern. This helps the graphene flame-retardant materials to expand when heated in a fire while still providing support, enhancing their mechanical properties and resisting the impact of violent airflow generated by high temperatures. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] In the diagram: 1. Flame arrestor ring body; 2. First ring body; 3. Second ring body; 4. Splicing block one; 5. Splicing block two; 6. Connecting hole; 7. Graphene flame retardant material; 8. Graphene sheet; 9. Bushing; 10. Sodium silicate-based gel; 11. Adhesive. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] In the attached diagram, all identical reference numerals refer to the same components.

[0020] like Figure 1-2As shown, this utility model provides a flame-retardant ring, including a flame-retardant ring body 1, a first ring body 2, a second ring body 3, and a splicing block 4. The first ring body 2 is provided on the front of the flame-retardant ring body, and the second ring body 3 is provided on the back of the first ring body 2. A splicing block 4 is installed on the left and right sides of the first ring body 2, and a splicing block 5 is provided on the left and right sides of the second ring body 3. Two connecting holes 6 are provided on the front of the splicing block 4 and the splicing block 5. The feature is that graphene flame-retardant material 7 is installed inside the first ring body 2 and the second ring body 3, and the graphene flame-retardant material 7 is arranged in a cross pattern.

[0021] In this invention, the height of the first ring 2 and the height of the second ring 3 are coaxially nested, with a gap of 0.5 mm between them. Graphene flame-retardant material 7 fills the rings in a cross-shaped grid pattern, with a grid density of 6 layers vertically and 6 layers horizontally.

[0022] In an optional embodiment, the cross-shaped graphene flame retardant material 7 is composed of 4-8 mutually perpendicular oriented graphene sheets 8, with a spacing of 0.5-2 mm between adjacent graphene sheets 8, and the direction of the graphene sheets 8 forms an angle of 30°-60° with the axial direction of the pipe.

[0023] It should be noted that the graphene sheets are laid at 45°, with the bottom layer at a 30° angle to the pipe axis, and the top layer can be rotated 15° to 60° in sequence (gradient angle design).

[0024] In an optional embodiment, the graphene flame retardant material 7 is pre-embedded with nickel-titanium alloy memory fibers, the fibers having a diameter of 0.05-0.12 mm, a bending radius of curvature R=0.8-1.5 mm, and a volume percentage of 5-12%.

[0025] It should be noted that 0.08mm nickel-titanium alloy wire (pre-bent into an Ω shape, R=1.2mm) is mixed into the graphene slurry, accounting for 8% of the total material volume. The fiber axis direction is consistent with the extension direction of the cross-shaped graphene sheet 8.

[0026] In an optional embodiment, a bushing 9 is embedded in the connection hole 6 between the first splicing block 4 and the second splicing block 5.

[0027] It should be noted that the bushing 9 is preferably made of zirconia ceramic.

[0028] In an optional embodiment, a micro-expansion buffer layer is provided between the first ring 2 and the second ring 3. The buffer layer is sodium silicate-based gel 10 with a thickness of 0.2-0.5 mm and contains 30%-50% hollow glass microspheres (particle size 20-50 μm).

[0029] It should be noted that a 0.3 mm thick gel layer (40% borosilicate glass microspheres) is coated on the joint surface of the two rings, which forms a stress buffer zone after curing.

[0030] In an optional embodiment, adhesive 11 is applied to the intersection of the upper and lower ends of the graphene flame retardant material 7.

[0031] It should be noted that glue 11 is applied to the intersection of the upper and lower ends of the graphene flame retardant material 7, so that the separate graphene flame retardant materials 7 are bonded together to form a whole, providing structural internal stress.

[0032] The working principle of this utility model is as follows:

[0033] Three stages of fire response:

[0034] 300℃ trigger: straighten nickel-titanium fibers → tighten cross mesh → pre-compress graphene sheets 8;

[0035] 450℃ primary expansion: graphene expands along the cross direction → silicon carbide nodes expand secondary expansion → gel layer fills the gaps;

[0036] Steady-state at 800℃: Orthogonal grids form a labyrinthine air path, increasing airflow permeability resistance.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fire-arresting ring, comprising a fire-arresting ring body (1), a first ring body (2), a second ring body (3), and a first splicing block (4), wherein the first ring body (2) is provided on the front side of the fire-arresting ring body, and the second ring body (3) is provided on the back side of the first ring body (2), a first splicing block (4) is respectively installed on the left and right sides of the first ring body (2), and a second splicing block (5) is respectively provided on the left and right sides of the second ring body (3), wherein the first splicing block (4) and the second splicing block (5) are respectively provided with two connecting holes (6) on the front side, characterized in that, The first ring (2) and the second ring (3) are equipped with graphene flame retardant material (7), which is arranged in a cross pattern.

2. The flame arrestor ring according to claim 1, characterized in that, The cross-shaped graphene flame retardant material (7) is composed of 4-8 mutually perpendicular oriented graphene sheets (8), with a spacing of 0.5-2 mm between adjacent graphene sheets (8), and the direction of the graphene sheets (8) is at an angle of 30°-60° with the axial direction of the pipe.

3. A flame arrestor ring according to claim 1, characterized in that, The graphene flame retardant material (7) has embedded nickel-titanium alloy memory fibers with a diameter of 0.05-0.12 mm, a bending radius of R=0.8-1.5 mm, and a volume ratio of 5-12%.

4. A flame arrestor ring according to claim 1, characterized in that, The connecting hole (6) between the first splicing block (4) and the second splicing block (5) is fitted with a bushing (9).

5. A flame arrestor ring according to claim 1, characterized in that, (7) Apply glue to the intersection of the upper and lower ends of the graphene flame retardant material (11).

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