A fireproof insulating head for a coaxial cable

Abstract

This utility model relates to the field of coaxial cable accessory design, specifically to a fireproof insulation head for a coaxial cable, comprising a ceramicized silicone rubber outer layer, an expanded graphite middle layer, a flame-retardant colloid inner layer, and a cable. The fireproof insulation head for the coaxial cable adopts a multi-layer composite fireproof structure design, namely, a ceramicized silicone rubber outer layer (gradient ceramic outer layer - a new type of composite material, with a CTE gradient of ), an expanded graphite middle layer, and a flame-retardant colloid inner layer, with the composite material from the cable outwards consisting of a flame-retardant colloid inner layer, an expanded graphite middle layer, and a ceramicized silicone rubber outer layer.

Description

Technical Field

[0001] This utility model relates to the field of coaxial cable accessory design, specifically to a fireproof insulating head for coaxial cables. Background Technology

[0002] Coaxial cables are widely used in signal transmission and communication. In the event of a fire, the fire can spread along the cable, damaging precision connection equipment and interrupting signals. Traditional fire protection measures are insufficient to meet the unique structural characteristics of coaxial cables. Therefore, a fire-resistant insulating head specifically designed for their structural features is needed to ensure fire protection without compromising cable performance. The increasing application scenarios in recent years have also placed higher demands on the moisture resistance and corrosion resistance of fire-resistant insulating heads. Promoting the safe application of coaxial cables in a wider range of fields urgently requires the development of new design and manufacturing technologies to meet these needs. Therefore, those skilled in the art provide a fire-resistant insulating head for coaxial cables to address the problems mentioned in the background section. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a fireproof insulation head for coaxial cables, comprising a ceramicized silicone rubber outer layer, an expanded graphite middle layer, a flame-retardant colloid inner layer, and a cable. The fireproof insulation head for coaxial cables employs a multi-layer composite fireproof structure design, namely, a ceramicized silicone rubber outer layer (gradient ceramic outer layer – a novel composite material with a CTE gradient of 18→25→35×10⁻). 6 The composite material, from the cable outwards, consists of an expanded graphite middle layer, a flame-retardant colloid inner layer, and a ceramicized silicone rubber outer layer.

[0004] Preferably, the cable has a diameter of 1mm, and the flame-retardant colloid, after being wrapped around the cable, has an overall diameter of 2.4mm; Preferably, the expanded graphite middle layer, after being wrapped around the flame-retardant adhesive, has an overall diameter of 3.8 mm, and the ceramicized silicone rubber outer layer, after being wrapped around the expanded graphite middle layer, has an overall diameter of 5.2 mm. Preferably, an insulating layer is installed between the cable and the flame-retardant colloid inner layer, and a single-sided aluminum foil is installed between the flame-retardant colloid inner layer and the expanded graphite middle layer; Preferably, double-sided aluminum foil is installed between the expanded graphite middle layer and the ceramicized silicone rubber outer layer.

[0005] The technical effects and advantages of this utility model are as follows: 1. The ceramicized silicone rubber outer layer can quickly form a hard ceramic layer at high temperatures, effectively blocking the intrusion of flames and heat; 2. The expanded graphite middle layer expands when exposed to fire, filling the gaps and preventing the spread of smoke and heat; 3. The flame-retardant inner layer further enhances fire resistance while ensuring good adhesion to the cable. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the cross-sectional structure of a fireproof insulating head for a coaxial cable provided in an embodiment of this application; Figure 2 This is a schematic diagram of the elevation structure of a fireproof insulation head for a coaxial cable provided in an embodiment of this application; Figure 3 This is a schematic diagram of the layered structure of a fireproof insulating head for a coaxial cable provided in an embodiment of this application; Figure 4 This is a cross-sectional structural diagram of a fireproof insulating head for a coaxial cable provided in an embodiment of this application.

[0007] In the diagram: 1. Ceramicized silicone rubber outer layer; 2. Expanded graphite middle layer; 3. Flame-retardant colloid inner layer; 4. Cable; 5. Insulation layer; 6. Single-sided aluminum foil; 7. Double-sided aluminum foil. Detailed Implementation

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example

[0009] Please see Figures 1-4 This embodiment provides a fireproof insulating head for a coaxial cable, comprising a ceramicized silicone rubber outer layer 1, an expanded graphite middle layer 2, a flame-retardant colloid inner layer 3, and a cable 4. The fireproof insulating head of the coaxial cable 4 employs a multi-layer composite fireproof structure design, namely, the ceramicized silicone rubber outer layer 1 (gradient ceramic outer layer – a novel composite material with a CTE gradient of 18→25→35×10⁻⁻⁴). 6 / ℃), expanded graphite middle layer 2 and flame-retardant colloid inner layer 3, the composite material from the cable 4 outward is flame-retardant colloid inner layer 3, expanded graphite middle layer 2 and ceramicized silicone rubber outer layer 1 in sequence; Specifically, the cable 1 has a diameter of 1mm, the flame-retardant colloid 3 has an overall diameter of 2.4mm after being wrapped around the cable 1, the expanded graphite middle layer 2 has an overall diameter of 3.8mm after being wrapped around the flame-retardant colloid 3, and the ceramicized silicone rubber outer layer 1 has an overall diameter of 5.2mm after being wrapped around the expanded graphite middle layer 2. An insulating layer 5 is installed between the cable 4 and the flame-retardant colloid inner layer 3, a single-sided aluminum foil 6 is installed between the flame-retardant colloid inner layer 3 and the expanded graphite middle layer 2, and a double-sided aluminum foil 7 is installed between the expanded graphite middle layer 2 and the ceramicized silicone rubber outer layer 1.

[0010] The working principle of this utility model is as follows: A fire-resistant insulating head for coaxial cable is used, employing a multi-layer composite fire-resistant structure design. This includes a ceramicized silicone rubber outer layer 1 (a graded ceramic outer layer—a novel composite material with a CTE gradient of 18→25→35×10⁻). 6 The fireproof insulation head consists of an expanded graphite middle layer 2 and a flame-retardant colloid inner layer 3, which improves the fire resistance limit and environmental performance of the fireproof insulation head and effectively reduces interference to high-frequency signals. This fireproof insulation head can be applied to various scenarios to ensure that the coaxial cable in the base station can still maintain normal operation for a certain period of time when a fire occurs, and ensure the stable transmission of communication signals.

[0011] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A firestop seal for a coaxial cable, comprising: The coaxial cable (4) fireproof insulation head includes a ceramicized silicone rubber outer layer (1), an expanded graphite middle layer (2), a flame-retardant colloid inner layer (3), and a cable (4). A multi-layer composite fireproof structure is used in the fireproof insulation head of the coaxial cable (4), namely, the ceramicized silicone rubber outer layer (1), the expanded graphite middle layer (2), and the flame-retardant colloid inner layer (3). The ceramicized silicone rubber outer layer (1) uses a gradient ceramic outer layer—a novel composite material—with a CTE gradient of 18→25→35×10⁻. 6 / ℃, the composite material from the cable (4) outwards is in sequence the flame retardant inner layer (3), the expanded graphite middle layer (2) and the ceramicized silicone rubber outer layer (1).

2. A fire rated coaxial cable termination according to claim 1, wherein, The cable (4) has a diameter of 1 mm.

3. A fire rated coaxial cable termination according to claim 1, wherein, The flame-retardant inner layer (3) is wrapped around the cable (4) and has an overall diameter of 2.4 mm.

4. A fire rated coaxial cable termination according to claim 1, wherein, The expanded graphite middle layer (2) is wrapped around the flame-retardant colloid inner layer (3) and has an overall diameter of 3.8 mm.

5. A fireproof insulating head for a coaxial cable according to claim 3, characterized in that, The ceramicized silicone rubber outer layer (1) wraps around the expanded graphite middle layer (2) and has an overall diameter of 5.2 mm.

6. A fire rated coaxial cable termination according to claim 1, wherein, An insulation layer (5) is installed between the cable (4) and the flame-retardant inner layer (3).

7. A fire rated coaxial cable termination according to claim 6, wherein, A single-sided aluminum foil (6) is installed between the inner layer (3) of the flame-retardant colloid and the middle layer (2) of the expanded graphite.

8. A fire rated coaxial cable termination according to claim 7, wherein, Double-sided aluminum foil (7) is installed between the expanded graphite middle layer (2) and the ceramicized silicone rubber outer layer (1).

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