Matt optical fiber composite overhead ground wire

Abstract

The utility model discloses a matte optical fiber composite overhead ground wire, and particularly relates to the technical field of optical fiber composite overhead ground wires, the matte optical fiber composite overhead ground wire comprises a cable body, the cable body comprises an optical unit, a conductive layer is arranged outside the optical unit, a tensile layer is arranged outside the conductive layer, a protective layer is arranged outside the tensile layer, and the protective layer is arranged outside the protective layer. An anti-permeation layer is arranged outside the protective layer, a high-temperature-resistant layer is arranged outside the anti-permeation layer, a matte layer is arranged outside the high-temperature-resistant layer, the conductive layer is an aluminum plate, the matte layer is formed by performing sand blasting treatment on the surface of the high-temperature-resistant layer through a sand blasting machine, and a plurality of tiny grooves are formed in the surface of the matte layer. According to the utility model, through the arrangement of the protection layer, the cable body can be suitable for various environments, the cable body is protected, the service life of the cable body is prolonged, through the conductive layer, the color of the outer surface of the cable body can be dim, sunlight irradiation reflected light is reduced, the stimulation of sunlight to eyes is avoided, and the safe construction of high-altitude operation personnel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber composite overhead ground wire technology, specifically to a matte optical fiber composite overhead ground wire. Background Technology

[0002] Matte fiber composite overhead ground wire (OPGW) is an optical cable that contains optical fiber units for communication within the ground wire of a power transmission line. It has two functions: first, it serves as a lightning protection wire for the transmission line, providing shielding protection against lightning discharge; second, through the optical fiber integrated into the ground wire, it acts as a medium for transmitting optical signals, enabling the transmission of audio, video, data, and various control signals to form a multi-channel broadband communication network.

[0003] For example, Chinese patent application CN204792031U discloses a high-temperature resistant, low-loss optical fiber composite overhead ground wire, including an optical unit. The optical unit comprises a stainless steel tube and multiple optical fibers disposed within the stainless steel tube. The optical unit is externally stranded with a first stranded layer composed of multiple first aluminum-clad steel wires. The first stranded layer is externally stranded with a second stranded layer composed of multiple second and third aluminum-clad steel wires arranged alternately. The optical fibers are low-loss optical fibers, and the first, second, and third aluminum-clad steel wires are all 20SA, 20SA, and 27SA, respectively. This invention uses a double-layer central tube structure, which has the advantage of ensuring a suitable space for the optical unit, thus allowing for better control of the optical fibers. The extra length ensures the temperature and transmission performance of the OPGW. The double-layered twisted wires on the outside of the optical unit better protect it from external damage. The second twisted wire layer consists of six second aluminum-clad steel wires (20SA aluminum-clad steel wires) and six third aluminum-clad steel wires (27SA aluminum-clad steel wires) spaced alternately. This improves the short-circuit current capacity and heat resistance while ensuring the product meets the rated breaking force. Low-loss optical fiber is used inside the optical unit to improve its transmission performance. The stainless steel tube of the optical unit has a diameter of 3.7mm and contains 48 optical fibers. The first twisted wire layer consists of eight first aluminum-clad steel wires with a diameter of 2.3mm; the second twisted wire layer consists of six second aluminum-clad steel wires and six third aluminum-clad steel wires spaced alternately.

[0004] However, the following problems still exist in this technical solution: the optical cable is not protected in this technical solution, and the optical cable is exposed to the external environment for a long time. Environmental factors can easily cause damage to the optical cable, thereby reducing the service life of the optical cable. Utility Model Content

[0005] The purpose of this invention is to provide a matte fiber optic composite overhead ground wire. By setting a protective layer, the cable body can be adapted to various environments, protecting the cable body and extending its service life. Furthermore, the conductive layer makes the outer surface of the cable body dark in color, reducing sunlight reflection and avoiding eye irritation from sunlight, thus ensuring the safety of workers at heights and solving the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a matte fiber optic composite overhead ground wire, comprising a cable body, the cable body comprising an optical unit, the optical unit having a conductive layer outside, a tensile-resistant layer outside the conductive layer, a protective layer outside the tensile-resistant layer, an anti-penetration layer outside the protective layer, a high-temperature resistant layer outside the anti-penetration layer, and a matte layer outside the high-temperature resistant layer; the optical unit comprising a stainless steel tube, and multiple optical fibers being disposed inside the stainless steel tube.

[0007] Preferably, the conductive layer is an aluminum plate, which gives the cable body good conductivity, effectively conducts electrical signals, and ensures the stability and reliability of power transmission.

[0008] Preferably, the tensile layer is made of polyurethane rubber, which enables the cable body to have tensile strength and extends the service life of the cable body.

[0009] Preferably, the matte layer is formed by sandblasting the surface of the high-temperature resistant layer with a sandblasting machine. The surface of the matte layer has several tiny grooves, which can reduce the reflection of sunlight and ensure the safety of workers at heights.

[0010] Preferably, the anti-permeability layer is made of polymer anti-permeability material, which can effectively prevent external liquids or gases from seeping into the cable body and extend the service life of the cable body.

[0011] Preferably, the high-temperature resistant layer is made of chlorosulfonated polyethylene, which enables the cable body to have flame retardancy and extends the service life of the cable body.

[0012] Preferably, the protective layer is made of polytetrafluoroethylene, which can protect the cable body and extend the service life of the cable body.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] The protective layer in this invention is made of polytetrafluoroethylene (PTFE). PTFE itself has excellent physical properties, is resistant to strong acids and alkalis, water and various organic solvents, and is also resistant to aging and has high lubricity. By setting the protective layer, the cable body can be adapted to various environments, protecting the cable body and extending its service life.

[0015] The matte layer in this invention is formed by sandblasting the surface of the high-temperature resistant layer. The sandblasting process involves high-pressure spraying of water-mixed diamond abrasive onto the surface of the cable body to create numerous tiny grooves, thus forming the matte layer. This makes the outer surface of the cable body darker, reducing sunlight reflection and avoiding eye irritation, ensuring the safety of workers at heights, and also reducing light pollution to residents in high-rise buildings near the optical cable, thus playing a role in environmental protection.

[0016] The conductive layer in this invention is an aluminum plate. The aluminum plate can provide electromagnetic shielding for the cable body, preventing external electromagnetic interference from affecting the signal transmission of the cable body and ensuring the stability and reliability of power transmission. The aluminum plate also has good conductivity, which can effectively conduct power signals. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the cable body of this utility model;

[0019] Figure 2 This is a top view of the cable body of this utility model;

[0020] Figure 3 For the present utility model Figure 2 A cross-sectional view of the cable body along direction A;

[0021] Figure 4 This is a schematic diagram of the structure of the optical unit of this utility model;

[0022] Figure 5 This is a schematic diagram of the stainless steel tube and optical fiber of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Cable body, 11. Optical unit, 12. Conductive layer, 13. Tensile layer, 14. Protective layer, 15. Anti-penetration layer, 16. High temperature resistant layer, 17. Matte layer;

[0025] 101 stainless steel pipe, 102 optical fiber. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5 The matte fiber optic composite overhead ground wire shown includes a cable body 1, which includes an optical unit 11. The optical unit 11 is provided with a conductive layer 12 on the outside, a tensile-resistant layer 13 on the outside of the conductive layer 12, a protective layer 14 on the outside of the tensile-resistant layer 13, an anti-penetration layer 15 on the outside of the protective layer 14, a high-temperature resistant layer 16 on the outside of the anti-penetration layer 15, and a matte layer 17 on the outside of the high-temperature resistant layer 16. The optical unit 11 includes a stainless steel tube 101, and multiple optical fibers 102 are disposed inside the stainless steel tube 101.

[0028] like Figure 1-5 As shown, the conductive layer 12 is an aluminum plate. The aluminum plate in this invention can provide electromagnetic shielding for the cable body 1, prevent external electromagnetic interference from affecting the signal transmission of the cable body 1, and ensure the stability and reliability of power transmission. The aluminum plate also has good conductivity and can effectively conduct power signals.

[0029] like Figure 1-5 As shown, the tensile layer 13 is made of polyurethane rubber. The polyurethane rubber in this invention has high tensile strength and excellent elasticity. It stretches the cable body 1 so that it can be used in different environments. By setting the tensile layer 13, the cable body 1 can be made tensile-resistant, extending the service life of the cable body 1 and expanding the scope of application of this invention.

[0030] like Figure 1-5 As shown, the matte layer 17 is formed by sandblasting the surface of the high-temperature resistant layer 16. The surface of the matte layer 17 has several tiny grooves. The sandblasting process in this invention uses water mixed with diamond abrasive to spray at high pressure onto the surface of the cable body 1 to form numerous tiny grooves, thus forming a matte layer. This makes the outer surface of the cable body 1 darker, reduces sunlight reflection, avoids eye irritation from sunlight, ensures the safety of workers at heights, and also reduces light pollution to residents in high-rise buildings near the optical cable, thus playing a role in environmental protection.

[0031] like Figure 1-5As shown, the anti-permeability layer 15 is made of polymer anti-permeability material. The polymer anti-permeability material in this utility model is a thin film made of high molecular polymer. It can form a tough and dense anti-permeability layer, which can effectively prevent external liquids or gases from penetrating into the cable body 1, protect the cable body 1, and extend the service life of the cable body 1.

[0032] like Figure 1-5 As shown, the high-temperature resistant layer 16 is made of chlorosulfonated polyethylene. Chlorosulfonated polyethylene is a special chlorine-containing elastomer material with a high saturated chemical structure, which is made from polyethylene as the main raw material through chlorination and chlorosulfonation reaction. It belongs to a high-performance special rubber variety. Chlorosulfonated polyethylene has outstanding flame retardant properties. By setting the high-temperature resistant layer 16, the cable body 1 can be made flame retardant, thus extending the service life of the cable body 1.

[0033] like Figure 1-5 As shown, the protective layer 14 is made of polytetrafluoroethylene. In this invention, polytetrafluoroethylene itself has excellent physical properties, can resist strong acids and alkalis, water and various organic solvents, and is resistant to aging and has high lubricity. By setting the protective layer 14, the cable body 1 can be used in various environments, protect the cable body 1, and extend the service life of the cable body 1.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fiber optic composite overhead ground wire of the dead matte type, comprising a cable body (1), characterized in that: The cable body (1) comprises a light unit (11), an electrically conductive layer (12) is arranged outside the light unit (11), a tensile-resistant layer (13) is arranged outside the electrically conductive layer (12), a protective layer (14) is arranged outside the tensile-resistant layer (13), a permeation-proof layer (15) is arranged outside the protective layer (14), a high-temperature-resistant layer (16) is arranged outside the permeation-proof layer (15), and a matte layer (17) is arranged outside the high-temperature-resistant layer (16). The protective layer (14) is made of polytetrafluoroethylene.

2. The optical fiber composite overhead ground wire according to claim 1, wherein: The light unit (11) comprises a stainless steel pipe (101), and a plurality of optical fibers (102) are arranged inside the stainless steel pipe (101).

3. The optical fiber composite overhead ground wire according to claim 1, wherein: The electrically conductive layer (12) is an aluminum plate.

4. The optical fiber composite overhead ground wire according to claim 1, wherein: The tensile-resistant layer (13) is made of polyurethane rubber.

5. The optical fiber composite overhead ground wire according to claim 1, wherein: The permeation-proof layer (15) is made of a polymer permeation-proof material.

6. The optical fiber composite overhead ground wire according to claim 1, wherein: The high-temperature-resistant layer (16) is made of chlorosulfonated polyethylene.

7. The optical fiber composite overhead ground wire according to claim 6, wherein: The matte layer (17) is formed by sandblasting treatment of the surface of the high-temperature-resistant layer (16) by a sandblaster, and the surface of the matte layer (17) has a plurality of micro grooves.

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