10-gigabit data transmission fireproof cable

Abstract

The utility model relates to the technical field of data transmission cables, in particular to a 10-gigabit data transmission fire-resistant cable. A braid layer, a fire-resistant armor layer, a ceramic fire-resistant polyolefin oxygen barrier layer, a wrapping layer and an outer coating layer are sequentially coated on the periphery of a plurality of groups of wire pairs. The plurality of groups of internal wire pairs are isolated from the outside through the braid layer, the outside electromagnetic interference is isolated, the fire-resistant armor layer further isolates the outside electromagnetic signal interference, external mechanical impact can be prevented, the cable core is protected, and the cable has waterproof, moisture-proof and fire-resistant functions. The ceramic fire-resistant polyolefin oxygen barrier layer can prevent flames from damaging the inner structure of the cable core, ensure the integrity of the cable core, reduce the volatilization of combustible gas in the cable core, and further reduce the corresponding combustion temperature. Therefore, the data transmission cable not only has excellent fire resistance and combustion performance indexes, but also has durability, safety and reliability, and meets the durable, reliable and fire-resistant cable use requirements in public places.

Description

Technical Field

[0001] The present application relates to the technical field of data transmission cables, and in particular to a 10G data transmission fire-resistant cable. Background Art

[0002] Important public places such as large conference halls, office buildings, hospitals, hotels, subway stations, and mines have certain data transmission requirements for cables in the event of a fire. They must ensure that the data transmission cables can operate normally within a certain period of time to provide valuable time for escape, automatic alarm, activation of fire-fighting facilities, rescue, and the use of emergency equipment. Traditional data cables cannot meet these requirements in terms of fire resistance and combustion performance. Therefore, it is necessary to design a fire-resistant cable with high transmission rate, durability, and reliability to meet the above requirements. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a 10G data transmission fire-resistant cable, including several groups of wire pairs, a braided layer sequentially wrapped around the periphery of the several groups of wires, a fire-resistant armor layer, a ceramicized fire-resistant polyolefin oxygen insulation layer, a sheath and an outer layer.

[0004] Preferably, the wire pair includes a conductor, an insulating layer covering the conductor, and a metal layer covering the insulating layer.

[0005] Preferably, the insulating layer adopts a three-layer co-extrusion structure of skin layer-foaming layer-skin layer.

[0006] Preferably, the fire-resistant armor layer is formed by wrapping a copper tape around the outer periphery of the braided layer.

[0007] Preferably, the copper strip has a thickness of 0.12-0.16 mm.

[0008] Preferably, the wrapping layer is formed by wrapping a glass fiber tape around the periphery of the ceramicized fire-resistant polyolefin oxygen-isolating layer.

[0009] Preferably, the overlapping rate of the glass fiber tape wrapping is greater than 20%.

[0010] As can be seen from the above, the following beneficial effects can be obtained by applying the method provided by the present application: by sequentially coating the outer periphery of several groups of wires with a braided layer, a fire-resistant armor layer, a ceramic fire-resistant polyolefin oxygen-isolating layer, a wrapping layer and an outer layer. The braided layer isolates the internal groups of wire pairs from the outside world, thereby isolating the external electromagnetic interference. The fire-resistant armor layer further isolates the external electromagnetic signal interference, and at the same time can prevent external mechanical impact, protect the cable core, and have waterproof, moisture-proof and fire-resistant functions. The use of a ceramic fire-resistant polyolefin oxygen-isolating layer can prevent the flame from damaging the internal structure of the cable core and ensure the integrity of the cable core. It can also reduce the volatilization of flammable gases inside the cable core, thereby reducing the corresponding combustion temperature. The data transmission cable not only performs well in terms of fire resistance and combustion performance indicators, but also has durability, safety and reliability, meeting the requirements of durable, reliable and fire-resistant wires in public places. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments of the present application or the prior art. Obviously, the drawings described below are only part of the embodiments of the present application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0012] Figure 1 This is a structural diagram of a 10G data transmission fire-resistant cable according to an embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0014] Example

[0015] In order to solve the above technical problems, this embodiment provides a 10G data transmission fire-resistant cable, such as Figure 1As shown, it includes several groups of wire pairs 10, a braided layer 20 sequentially wrapped around the outer periphery of the several groups of wire pairs 10, a fire-resistant armor layer 30, a ceramic fire-resistant polyolefin oxygen barrier layer 40, a wrapping layer 50 and an outer layer 60. The braided layer 20 isolates the internal several groups of wire pairs 10 from the outside world, thereby isolating the external electromagnetic interference. The fire-resistant armor layer 30 further isolates the external electromagnetic signal interference, while preventing external mechanical impact, protecting the cable core, and having waterproof, moisture-proof and fire-resistant functions. The use of a ceramic fire-resistant polyolefin oxygen barrier layer 40 can not only prevent the flame from damaging the internal structure of the cable core and ensure the integrity of the cable core, but also reduce the volatilization of combustible gases inside the cable core, thereby reducing the corresponding combustion temperature. This makes the data transmission cable not only excellent in terms of fire resistance and combustion performance indicators, but also durable, safe and reliable, meeting the requirements of durable, reliable and fire-resistant wires in public places.

[0016] Specifically, wire pair 10 includes a conductor 11, an insulating layer 12 covering conductor 11, and a metal layer 13 covering insulating layer 12. Because 10G digital transmission cables experience significant electromagnetic coupling energy and strong crosstalk during ultra-high frequency transmission, significant mutual interference between wire pairs within the communication cable occurs. Therefore, metal layer 13 is used to separate each wire pair 10. Metal layer 13 is made of aluminum foil to prevent signal interference between wire pairs within the cable, ensuring the cable's 10Gb / s transmission rate.

[0017] Furthermore, the insulating layer 12 adopts a three-layer co-extrusion structure of skin layer-foaming layer-skin layer, wherein the foaming layer is physically foamed, and high-pressure nitrogen is used to fill the insulating material. A large amount of air is added to the insulating material to form tiny bubbles, and the bubbles formed are closed tiny bubbles, which are particularly evenly distributed and will not be of different sizes like chemical foaming, thereby avoiding capacitance imbalance of the same single wire, reducing the dielectric constant, and thus reducing the working capacitance.

[0018] Furthermore, the braided layer 20 is woven from copper wire, and the fire-resistant armor layer 30 is formed by wrapping copper tape around the outer periphery of the braided layer 20. The copper tape has a thickness of 0.12-0.16 mm, preferably 0.16 mm. This further isolates the cable from external electromagnetic interference, prevents external mechanical impact, protects the cable core, and provides waterproof, moisture-proof, and fire-resistant properties.

[0019] Furthermore, a ceramicized fire-resistant polyolefin oxygen-isolating layer 40 is extruded on the periphery of the fire-resistant armor layer 30. Under the condition of flame combustion, a dense oxygen-isolating layer is formed, which can prevent the flame from damaging the internal structure of the cable and ensure the integrity of the cable. At the same time, it can also reduce the volatilization of combustible gases inside the cable core, thereby reducing the corresponding combustion temperature.

[0020] Furthermore, the wrapping layer 50 is formed by wrapping glass fiber tape around the outer periphery of the ceramicized fire-resistant polyolefin oxygen barrier layer 40. This not only reduces dripping caused by the ceramicized polyolefin encrustation during flame combustion, but also ensures that the polyolefin is properly ceramicized during the initial combustion phase. The glass fiber tape is wrapped tightly and neatly, with an overlap ratio of greater than 20%.

[0021] The outer sheath 60 is made of a halogen-free, low-smoke, flame-retardant polyolefin sheath material, resulting in no noticeable burning drips during flame combustion, achieving Class B1 performance. Tables 1 and 2 below show the cable test results, showing satisfactory performance in various test parameters, including attenuation and fire resistance, meeting the requirements for high-speed transmission and fire-resistant reliability.

[0022]

[0023]

[0024] Table 1

[0025]

[0026]

[0027] Table 2

[0028] In summary, the present application scheme sequentially coats the outer periphery of several groups of wires with a braided layer, a fire-resistant armor layer, a ceramic fire-resistant polyolefin oxygen-isolating layer, a winding layer, and an outer layer. The braided layer isolates the internal groups of wire pairs from the outside world, thereby isolating the external electromagnetic interference. The fire-resistant armor layer further isolates the external electromagnetic signal interference, and at the same time can prevent external mechanical impact, protect the cable core, and have waterproof, moisture-proof, and fire-resistant functions. The use of a ceramic fire-resistant polyolefin oxygen-isolating layer can prevent the flame from damaging the internal structure of the cable core and ensure the integrity of the cable core. It can also reduce the volatilization of flammable gases inside the cable core, thereby reducing the corresponding combustion temperature. This makes the data transmission cable not only excellent in terms of fire resistance and combustion performance indicators, but also durable, safe, and reliable, meeting the requirements of durable, reliable, and fire-resistant wires in public places.

[0029] The above-described embodiments do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the above-described embodiments shall be included in the scope of protection of this technical solution.

Claims

1. A 10G data transmission fire-resistant cable, characterized by: The invention comprises a plurality of wire pairs (10), a braided layer (20) sequentially wrapped around the outer periphery of the plurality of wire pairs (10), a fire-resistant armor layer (30), a ceramic fire-resistant polyolefin oxygen-isolating layer (40), a wrapping layer (50) and an outer layer (60).

2. The 10G data transmission fire-resistant cable according to claim 1, characterized in that: The wire pair (10) comprises a conductor (11), an insulating layer (12) covering the conductor (11), and a metal layer (13) covering the insulating layer (12).

3. The 10G data transmission fire-resistant cable according to claim 2, characterized in that: The insulating layer (12) adopts a three-layer co-extrusion structure of skin layer-foaming layer-skin layer.

4. The 10G data transmission fire-resistant cable according to claim 1, characterized in that: The fire-resistant armor layer (30) is formed by wrapping a copper tape around the outer periphery of the braided layer (20).

5. The 10G data transmission fire-resistant cable according to claim 4, characterized in that: The copper strip has a thickness of 0.12-0.16 mm.

6. The 10G data transmission fire-resistant cable according to claim 1, characterized in that: The wrapping layer (50) is formed by wrapping a glass fiber tape around the outer periphery of the ceramicized fire-resistant polyolefin oxygen-isolating layer (40).

7. The 10G data transmission fire-resistant cable according to claim 6, characterized in that: The overlapping rate of the glass fiber tape wrapping is greater than 20%.

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