Fireproof flexible high-speed transmission communication cable

Abstract

The utility model discloses a fireproof flexible high-speed transmission communication cable, which comprises core wires, each core wire comprises a conductor with a plating layer, an insulating layer is arranged on the outer side of each conductor with the plating layer, a mica tape is coated on the outer side of each insulating layer, and every two core wires are coated by a double-layer aluminum foil layer. The four pairs of core wires coated with the double aluminum foil layers are wrapped by a first braid layer, a second braid layer is arranged outside the first braid layer, and a sheath is arranged on the outer side of the second braid layer. According to the utility model, the insulating layer is arranged on the outer side of the conductor with the plating layer, and the stranded conductor with the plating layer ensures that the conductor is not oxidized in a severe environment to affect the transmission performance and has certain distortion resistance and bending resistance; the foamed polyethylene insulation reduces the dielectric constant of the medium and ensures the high-speed transmission performance.

Description

Technical Field

[0001] The utility model relates to the technical field of communication cables, in particular to a fire-resistant flexible high-speed transmission communication cable. Background Art

[0002] In today's digital world, people pursue fast data transmission in their daily lives. However, in industrial production and operation, the pursuit is not only about transmission speed, but also the stability and integrity of data transmission. Especially when disasters occur, how to ensure the timely and effective transmission of data is the most critical.

[0003] At present, fire-resistant Ethernet cables are mainly Category 5 and Category 5e fire-resistant cables. These Ethernet fire-resistant cables can guarantee insulation for 120 minutes and 1Gbit / s data transmission speed when exposed to flames. In the era of Industrialization 4.0 and the current 5G interconnection era, data transmission will become complicated, the amount of data will increase dramatically, and the application environment will become more and more complicated. Therefore, the development of new fire-resistant flexible high-speed transmission communication cables is a trend in the future. The new fire-resistant flexible high-speed transmission communication cables developed will provide 40Gbit / s data transmission speed while meeting at least 1 million applications in dynamic environments. Utility Model Content

[0004] The utility model aims to provide a fire-resistant flexible high-speed transmission communication cable to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-resistant flexible high-speed transmission communication cable, comprising a core wire, the core wire comprising a plated conductor, an insulating layer is arranged on the outside of the plated conductor, the outside of the insulating layer is coated with mica tape, every two core wires are coated with a double-layer aluminum foil layer, four pairs of core wires coated with the double-layer aluminum foil layer are wrapped by a first braided layer, a second braided layer is arranged outside the first braided layer, and a sheath is arranged on the outside of the second braided layer.

[0006] Preferably, the insulating layer is a foamed polyethylene insulating layer; and the sheath is a cross-linked polyethylene sheath.

[0007] Preferably, the four pairs of core wires coated with double-layer aluminum foil are distributed in two layers, upper and lower.

[0008] Preferably, the first braided layer and the second braided layer are both metal braided layers.

[0009] Preferably, the gap between the first woven layer and the mica tape is filled with a fireproof fiber filling layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. An insulating layer is provided on the outside of the plated conductor. The plated twisted conductor ensures that the conductor is not oxidized in a harsh environment and affects the transmission performance. It also has certain anti-twisting and bending properties. The foamed polyethylene insulation reduces the dielectric constant of the medium and ensures high-speed transmission performance.

[0012] 2. Mica tape is used and a fire-resistant fiber filling layer is filled in the gap between the first braided layer and the mica tape to improve the fire resistance of the cable.

[0013] 3. Four pairs of core wires covered with double-layer aluminum foil are wrapped by the first braided layer, and the four pairs of core wires covered with double-layer aluminum foil are distributed in two layers, upper and lower; the braided layer is flatter and softer, ensuring the cable's softness, tensile resistance, torsion resistance, and resistance to external signal interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1. Plated conductor; 2. Insulation layer; 3. Mica tape; 4. Double-layer aluminum foil; 5. Fireproof fiber filling; 6. First braided layer; 7. Second braided layer; 8. Sheath. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0018] See also Figure 1In an embodiment of the utility model, a fire-resistant flexible high-speed transmission communication cable includes a core wire, the core wire includes a plated conductor 1, an insulating layer 2 is arranged on the outside of the plated conductor 1, and a mica tape 3 is coated on the outside of the insulating layer 2, and every two of the core wires are coated by a double-layer aluminum foil layer 4, and four pairs of core wires coated with the double-layer aluminum foil layer 4 are wrapped by a first braided layer 6, and the four pairs of core wires coated with the double-layer aluminum foil layer 4 are distributed in two layers, upper and lower; the gap between the first braided layer 6 and the mica tape 3 is filled with a fireproof fiber filling layer; a second braided layer 7 is arranged outside the first braided layer 6, and the first braided layer 6 and the second braided layer 7 are both metal braided layers; a sheath 8 is arranged on the outside of the second braided layer 7; the insulating layer 2 is a foamed polyethylene insulating layer; the sheath 8 is a cross-linked polyethylene sheath.

[0019] Insulation extrusion: twisted coated conductor + foamed polyethylene insulation. The coated twisted conductor ensures that the conductor is not oxidized in harsh environments and affects the transmission performance, and has certain anti-twisting and bending properties; the foamed polyethylene insulation reduces the dielectric constant of the medium and ensures high-speed transmission performance.

[0020] Mica tape wrapping: Use appropriate pay-off tension, take-up tension and overlap rate. The pay-off tension of the core wire is stable during the wrapping process to ensure uniform overlap rate of the mica tape wrapping and uniformity of the core wire after wrapping.

[0021] Twisting: Use appropriate pay-off tension, take-up tension and back-twist rate. The pay-off tension difference between the two core wires during the twisting process should be within an appropriate range to ensure that the core wires are evenly stressed during the twisting and subsequent processes, prevent poor transmission performance, and ensure cable uniformity.

[0022] Double-layer aluminum foil wrapping of twisted pairs: Use appropriate wrapping tension, take-up tension and overlap rate. The pay-off tension of the twisted pairs is stable during the wrapping process to ensure uniform overlap rate of the aluminum foil wrapping, and ensure uniformity of the wire pairs after wrapping and good shielding performance.

[0023] Braiding: The braided layer wraps the core wire 360 ​​degrees into two layers, tightly wrapped. Compared with the traditional braiding method, there is no overlapping intersection between the two layers. Compared with the traditional braiding method, the braided layer is flatter and softer, ensuring the cable's flexibility, tensile resistance, torsion resistance, and resistance to external signal interference.

[0024] Sheath extrusion: Design appropriate sheath thickness and sheath extrusion method to ensure the round appearance of the cable. Use flame-retardant and easy-flowing cross-linked polyethylene material to ensure the flame retardancy, wear resistance, tear resistance and toxicity index of the cable products. During the sheath extrusion process, the semi-finished product adopts active wire release to ensure that the cable moves forward with stable tension and clamping force; the large-diameter wire storage rack ensures that the bending radius of the wire is appropriate during movement, so as not to cause stress concentration that affects the wire diameter position and transmission performance. The wires are arranged neatly to prevent abnormal extrusion on the take-up reel to ensure its stable electrical performance.

[0025] With stable structure, soft wire, light weight, less raw materials, high flexibility, easy design and construction, it can achieve high-speed transmission while taking into account higher output power in the harsh production environment of industrial sites. Under the dynamic conditions of continuous movement and torsion in the industrial site, it can still meet the electrical transmission performance parameter requirements specified in the corresponding standards; excellent dynamic fatigue resistance.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fire-resistant flexible high-speed transmission communication cable, comprising a core wire, characterized in that: The core wire comprises a plated conductor (1), an insulating layer (2) is arranged on the outside of the plated conductor (1), the insulating layer (2) is coated with a mica tape (3) on the outside, every two core wires are coated with a double-layer aluminum foil layer (4), four pairs of core wires coated with the double-layer aluminum foil layer (4) are wrapped with a first braided layer (6), a second braided layer (7) is arranged outside the first braided layer (6), and a sheath (8) is arranged on the outside of the second braided layer (7).

2. A fire-resistant flexible high-speed transmission communication cable according to claim 1, characterized in that: The insulating layer (2) is a foamed polyethylene insulating layer; and the sheath (8) is a cross-linked polyethylene sheath.

3. The fire-resistant flexible high-speed transmission communication cable according to claim 1, characterized in that: Four pairs of core wires coated with double-layer aluminum foil layers (4) are distributed in two layers, upper and lower.

4. The fire-resistant flexible high-speed transmission communication cable according to claim 1, characterized in that: The first braided layer (6) and the second braided layer (7) are both metal braided layers.

5. The fire-resistant flexible high-speed transmission communication cable according to claim 1, characterized in that: The gap between the first woven layer (6) and the mica tape (3) is filled with a fireproof fiber filling layer.

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