High-temperature-resistant coaxial cable

Abstract

The utility model relates to a high-temperature-resistant coaxial cable which comprises a conductor, a protective layer is installed on the outer side of the conductor, and a flame-retardant layer is installed on the outer side of the protective layer. A first shielding layer is mounted on the outer side of the flame-retardant layer, and a second shielding layer is mounted on the outer side of the first shielding layer; the outer side of the second shielding layer is provided with a heat insulation layer, and the outer side of the heat insulation layer is provided with a fireproof layer. According to the high-temperature-resistant coaxial cable, through the arrangement of the protective layer, under the cooperation of the glass fibers, the conductor can be protected, the overall strength and the tensile performance of the cable can be enhanced, the cable is more durable, and meanwhile, the glass fibers can effectively block current conduction, improve the insulation performance of the cable and reduce the electric leakage risk of the cable; the first shielding layer and the second shielding layer are arranged, so that magnetic field radiation and electromagnetic radiation can be effectively prevented; the heat insulation layer and the fireproof layer can improve the high temperature resistance of the cable, prevent the cable from burning, and effectively isolate a fire source.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxial cables, in particular to a high temperature resistant coaxial cable. Background Art

[0002] Cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. Coaxial cable can be used to transmit analog and digital signals and is suitable for a variety of applications, the most important of which are cable TV transmission, long-distance telephone transmission, short-distance connections between computer systems, and local area networks. Coaxial cable has developed rapidly as a means of transmitting television signals to thousands of households. This is cable TV. A cable TV system can carry dozens or even hundreds of TV channels, and its transmission range can reach tens of kilometers. Coaxial cable has long been an important part of the long-distance telephone network.

[0003] In some special environments, such as steelmaking and boiler areas, the surrounding temperature is extremely high, and some even have open flames. The coaxial cables on the market cannot work in such environments for a long time. In order to prevent the environment from damaging the coaxial cables, wiring in some areas is done around these areas, resulting in no communication signals in these areas, which brings great inconvenience to the operators in these areas. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a high-temperature resistant coaxial cable having the advantages of high-temperature resistance, etc., which solves the problem that due to the extremely high ambient temperature, some even cause open flames, the coaxial cables on the market cannot work in such an environment for a long time. In order to prevent the environment from damaging the coaxial cables in some areas, the wiring is bypassed in some areas, resulting in no communication signals in these areas, causing great inconvenience to the operators in these areas.

[0005] To achieve the above object, the utility model provides the following technical solution: a high temperature resistant coaxial cable, comprising a conductor, a protective layer is installed on the outside of the conductor, and a flame retardant layer is installed on the outside of the protective layer;

[0006] A first shielding layer is installed on the outer side of the flame retardant layer, and a second shielding layer is installed on the outer side of the first shielding layer;

[0007] A heat insulation layer is installed on the outer side of the second shielding layer, a fireproof layer is installed on the outer side of the heat insulation layer, and a wear-resistant coating is installed on the outer side of the fireproof layer.

[0008] Furthermore, the protective layer is glass fiber, and the flame retardant layer is quartz fiber.

[0009] Furthermore, the first shielding layer is a metal tinned mesh, and the second shielding layer is a metal aluminum foil.

[0010] Furthermore, the thermal insulation layer is made of nitrile rubber.

[0011] Furthermore, the fireproof layer is fireproof fiber.

[0012] Furthermore, the wear-resistant coating is nano-ceramic polymer.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The high-temperature resistant coaxial cable is provided with a protective layer, which can protect the conductor with the cooperation of glass fiber, and can enhance the overall strength and tensile resistance of the cable, making the cable more durable. At the same time, the glass fiber can effectively block the conduction of current, improve the insulation performance of the cable, and reduce the risk of leakage of the cable; by providing the first shielding layer and the second shielding layer, magnetic field radiation and electromagnetic radiation can be effectively prevented; and the heat insulation layer and the fireproof layer can improve the high-temperature resistance of the cable, avoid cable combustion, and effectively isolate the fire source. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the structure of the utility model.

[0017] In the figure: 1 conductor, 2 protective layer, 3 flame retardant layer, 4 first shielding layer, 5 second shielding layer, 6 heat insulation layer, 7 fireproof layer, 8 wear-resistant coating. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0019] See also Figure 1-2A high temperature resistant coaxial cable in this embodiment includes a conductor 1, and a protective layer 2 is installed on the outside of the conductor 1. The protective layer 2 is glass fiber. The glass fiber has high tensile strength and stiffness. Therefore, the use of glass fiber in the cable can enhance the overall strength and tensile resistance of the cable, making the cable more durable. The glass fiber itself is an excellent insulating material, which can effectively block the conduction of current, improve the insulation performance of the cable, and reduce the risk of leakage of the cable. The glass fiber has good high temperature resistance and can maintain stable performance within a certain temperature range. Therefore, in some cables that need high temperature resistance, the glass fiber can also play a role, thereby improving the performance and reliability of the cable.

[0020] A flame retardant layer 3 is installed on the outside of the protective layer 2. The flame retardant layer 3 is quartz fiber. The quartz fiber has excellent high-temperature stability, can maintain structural stability for a long time in a high-temperature environment, and is not easy to soften or melt. The setting of the flame retardant layer 3 makes the cable have a certain internal flame retardancy and is not easy to burn.

[0021] A first shielding layer 4 is installed on the outside of the flame retardant layer 3. The first shielding layer 4 is a metal tinned mesh. The metal tinned mesh is woven from metal tinned copper wires and can effectively prevent magnetic field radiation. A second shielding layer 5 is installed on the outside of the first shielding layer 4. The second shielding layer 5 is a metal aluminum foil. The metal aluminum foil can effectively prevent electromagnetic radiation.

[0022] A heat-insulating layer 6 is installed on the outside of the second shielding layer 5. The heat-insulating layer 6 is made of nitrile rubber. The nitrile rubber has heat-insulating properties and can effectively protect the conductor 1 and the first shielding layer 4 and the second shielding layer 5 inside the cable to prevent the external environment from affecting the cable. At the same time, it provides heat insulation and insulation protection to ensure that the cable can operate stably and reliably under various working environments. A fire-proof layer 7 is installed on the outside of the heat-insulating layer 6. The fire-proof layer 7 is made of fire-proof fiber. The fire-proof fiber is soft and elastic, resistant to high temperatures, has infrared radiation absorption capacity, and has a fire-resistant temperature of up to 1000°C or more, which can prevent high-frequency coaxial cables from burning and effectively isolate fire sources. A wear-resistant coating 8 is installed on the outside of the fire-proof layer 7. The wear-resistant coating 8 is a nano-ceramic polymer. The ceramic polymer has the advantages of strong heat insulation, corrosion resistance, fire resistance, acid and alkali resistance, salt spray resistance, good water resistance, UV resistance, aging resistance, erosion resistance, antibacterial and mildew resistance, etc.

[0023] In this embodiment, by cooperating among the protective layer 2, the flame retardant layer 3, the first shielding layer 4, the second shielding layer 5, the heat insulation layer 6, the fireproof layer 7 and the wear-resistant coating 8, the practicability of the cable can be enhanced and the conductor 1 thereof can be protected.

[0024] The working principle of the above embodiment is:

[0025] By providing a protective layer 2, with the cooperation of glass fiber, the conductor 1 can be protected, the overall strength and tensile resistance of the cable can be enhanced, and the cable can be made more durable. At the same time, the glass fiber can effectively block the conduction of current, improve the insulation performance of the cable, and reduce the risk of leakage of the cable; by providing a first shielding layer 4 and a second shielding layer 5, magnetic field radiation and electromagnetic radiation can be effectively prevented; and the heat insulation layer 6 and the fireproof layer 7 can improve the high temperature resistance of the cable, avoid cable combustion, and effectively isolate the fire source.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant coaxial cable, comprising a conductor (1), characterized in that: A protective layer (2) is installed on the outer side of the conductor (1), and a flame retardant layer (3) is installed on the outer side of the protective layer (2); A first shielding layer (4) is installed on the outer side of the flame retardant layer (3), and a second shielding layer (5) is installed on the outer side of the first shielding layer (4); A heat insulation layer (6) is installed on the outer side of the second shielding layer (5), a fireproof layer (7) is installed on the outer side of the heat insulation layer (6), and a wear-resistant coating (8) is installed on the outer side of the fireproof layer (7).

2. A high temperature resistant coaxial cable according to claim 1, characterized in that: The protective layer (2) is glass fiber, and the flame retardant layer (3) is quartz fiber.

3. A high temperature resistant coaxial cable according to claim 1, characterized in that: The first shielding layer (4) is a metal tinned mesh, and the second shielding layer (5) is a metal aluminum foil.

4. The high temperature resistant coaxial cable according to claim 1, characterized in that: The heat insulation layer (6) is made of nitrile rubber.

5. The high temperature resistant coaxial cable according to claim 1, characterized in that: The fireproof layer (7) is fireproof fiber.

6. A high temperature resistant coaxial cable according to claim 1, characterized in that: The wear-resistant coating (8) is a nano-ceramic polymer.

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