High-efficiency shielding tensile OPGW layer-stranded optical cable

Abstract

The utility model discloses a high-efficiency shielding tensile OPGW layer-stranded optical cable. The high-efficiency shielding tensile OPGW layer-stranded optical cable comprises a central reinforcing member, a plurality of optical fiber units, a sleeve, a water-blocking tape, a second shielding layer, an aramid yarn reinforcing layer and a wear-resistant layer, according to the optical cable, the central reinforcing piece, the stainless steel tube, the first reinforcing core and the aramid yarn reinforcing layer are arranged and matched, and the optical fiber units are uniformly wound on the periphery of the central reinforcing piece, so that the optical cable has higher tensile property, and the strength of the optical cable is improved; the aramid yarn reinforcing layer is coated with the wear-resistant layer, and the outer surface of the wear-resistant layer is provided with a plurality of convex strips which protrude outwards, so that the wear-resistant performance of the optical cable can be effectively enhanced, the service life of the optical cable is prolonged, and the product quality is improved; by arranging the first shielding layer and the second shielding layer, the shielding performance of the optical cable can be improved through the double-shielding-layer structure, and the optical cable is not prone to external interference; the waterproof performance of the optical cable can be effectively improved by arranging the water-blocking tape, the optical signal transmission quality is ensured, the user experience is improved, and the existing requirements are met.

Description

Technical Field

[0001] The utility model relates to the technology in the field of optical cables, in particular to a high-efficiency shielding and tensile OPGW stranded optical cable. Background Art

[0002] Optical fibers utilize the refractive index difference between the core and the cladding materials to enable the transmission of light energy in the optical fiber, which has become a major revolution in the history of communication. Optical fiber cables are light in weight and small in volume, and have been adopted by the power system to transmit information such as dispatching telephones, telecontrol signals, relay protection, and TV images between substations and central dispatching offices. In order to improve the stability and reliability of optical fiber cables, foreign countries have developed a structure in which the optical cable is combined with the phase conductor, overhead ground wire, and power cable of the transmission line.

[0003] OPGW optical cable (Optical Fiber Composite Overhead Ground Wire), also known as optical fiber composite overhead ground wire. The optical fiber is placed in the ground wire of the overhead high-voltage transmission line to form an optical fiber communication network on the transmission line. This structural form has both the functions of the ground wire and communication, and is generally called OPGW optical cable. Since the OPGW optical cable is wrapped with metal wires, the optical cable is more reliable, stable, and firm. Since the overhead ground wire and the optical cable are combined into one, compared with using other types of optical cables, the construction period is shortened and the construction cost is saved.

[0004] The OPGW stranded optical cable is one of the main structural forms of OPGW optical cables at present. Generally, multiple optical fiber units are twisted around the periphery of the central strengthening member, and a protective sleeve is covered on the periphery. Although this OPGW stranded optical cable has a relatively simple structure and can basically realize the transmission of optical signals, its functions are relatively single. Due to the unreasonable structural design, the strength of the optical cable is insufficient, the tensile performance is poor, the optical cable is easy to break when subjected to external forces, the product is not wear-resistant, the service life is short, and the product quality is poor; in addition, the shielding performance of the optical cable is not good, it is easy to be interfered by the outside world, the waterproof performance is not good, which affects the transmission quality of optical signals, the user experience is poor, brings inconvenience to users, and cannot meet the existing needs. Therefore, it is necessary to improve the current OPGW stranded optical cable. Summary of the Utility Model

[0005] In view of this, in view of the deficiencies existing in the prior art, the main purpose of the present utility model is to provide a high-efficiency shielding and tensile OPGW stranded optical cable, which can effectively solve the problems existing in the current OPGW stranded optical cable, such as relatively single functions, insufficient strength and poor tensile performance caused by unreasonable structural design, easy breakage when subjected to external forces, non-wear-resistant products, short service life, poor product quality, poor shielding performance, easy interference by the outside world, poor waterproof performance, affecting the transmission quality of optical signals, and poor user experience.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] An efficient shielding and tensile-resistant OPGW layer-stranded optical cable includes a central strengthening member, a plurality of optical fiber units, a sleeve, a water-blocking tape, a second shielding layer, an aramid yarn strengthening layer, and a wear-resistant layer; the plurality of optical fiber units are evenly stranded around the central strengthening member, and each optical fiber unit includes a stainless steel tube, a first shielding layer, and a plurality of optical fibers. The stainless steel tube is filled with fiber paste, the plurality of optical fibers are arranged in the stainless steel tube and embedded in the fiber paste, and the first shielding layer is coated outside the stainless steel tube; the sleeve is coated outside the plurality of optical fiber units, and a plurality of first strengthening cores are arranged between the sleeve and the plurality of optical fiber units, and each first strengthening core is arranged between two adjacent optical fiber units; the water-blocking tape is coated outside the sleeve; the second shielding layer is coated outside the water-blocking tape; the aramid yarn strengthening layer is coated outside the second shielding layer; the wear-resistant layer is coated outside the aramid yarn strengthening layer, and a plurality of convex strips protrude outward from the outer surface of the wear-resistant layer.

[0008] As a preferred solution, the central strengthening member is made of TPU material, which has high mechanical strength and excellent bearing capacity, impact resistance, shock absorption performance, tear resistance, tensile performance, wear resistance, and weather resistance.

[0009] As a preferred solution, the stainless steel tube is a 304 stainless steel tube welded continuously by laser, which can increase the strength of the optical cable.

[0010] As a preferred solution, the fiber paste is a hydrogen-absorbing water-blocking fiber paste.

[0011] As a preferred solution, the sleeve is made of PA, PE or LSZH material.

[0012] As a preferred solution, the wear-resistant layer is made of rubber material, which has good wear resistance and aging resistance and high elasticity.

[0013] As a preferred solution, the convex strips are semicircular.

[0014] As a preferred solution, a plurality of second strengthening cores are arranged in the wear-resistant layer to further increase the strength of the optical cable and enhance the tensile resistance of the optical cable.

[0015] As a preferred solution, a water-blocking cable paste is filled between the sleeve and the plurality of optical fiber units and the plurality of first strengthening cores, which can enhance the waterproof performance of the product.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solutions:

[0017] Through the setting and cooperation of the central strengthening member, stainless steel tube, first strengthening core and aramid yarn strengthening layer, and by evenly winding multiple optical fiber units around the periphery of the central strengthening member, the optical cable has stronger tensile performance, greatly increasing the strength of the optical cable. When the optical cable is subjected to external forces, it is not easily broken. The wear-resistant layer is coated outside the aramid yarn strengthening layer. The outer surface of the wear-resistant layer is provided with a plurality of convex strips, which can effectively enhance the wear-resistant performance of the optical cable, extend the service life of the optical cable, and improve the product quality. In addition, a first shielding layer and a second shielding layer are provided. This double shielding layer structure can greatly improve the shielding performance of the optical cable and is not easily affected by external interference. The water-blocking tape is provided to effectively improve the waterproof performance of the optical cable, ensure the optical signal transmission quality, enhance the user experience, bring convenience to the user, and meet the existing needs.

[0018] To more clearly elaborate on the structural features and functions of the present invention, the following will detail the present invention in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of a preferred embodiment of the present invention.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:

[0021] 10, central strengthening member; 20, optical fiber unit

[0022] 21, stainless steel tube; 22, first shielding layer

[0023] 23, optical fiber; 24, fiber paste

[0024] 30, sleeve; 40, water-blocking tape

[0025] 50, second shielding layer; 60, aramid yarn strengthening layer

[0026] 70, wear-resistant layer; 71, convex strip

[0027] 72, second strengthening core; 80, first strengthening core

[0028] 90, water-blocking cable paste. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Please refer to Figure 1 as shown, which shows the specific structure of a preferred embodiment of the present invention, including a central strengthening member 10, a plurality of optical fiber units 20, a sleeve 30, a water-blocking tape 40, a second shielding layer 50, an aramid yarn strengthening layer 60 and a wear-resistant layer 70.

[0030] The multiple optical fiber units 20 are evenly twisted around the periphery of the central strengthening member 10. Each optical fiber unit 20 includes a stainless steel tube 21, a first shielding layer 22, and multiple optical fibers 23. The stainless steel tube 21 is filled with fiber paste 24. The multiple optical fibers 23 are arranged in the stainless steel tube 21 and embedded in the fiber paste 24. The first shielding layer 22 is coated outside the stainless steel tube 21. In this embodiment, the central strengthening member 10 is made of TPU material, which has high mechanical strength and excellent bearing capacity, impact resistance, shock absorption performance, tear resistance, tensile performance, wear resistance, and weather resistance. The stainless steel tube 21 is a 304 stainless steel tube formed by continuous laser welding, which can increase the strength of the optical cable. The fiber paste 24 is a hydrogen-absorbing water-blocking fiber paste. The fiber paste 24 itself generates a small amount of hydrogen. Hydrogen is a substance with the smallest molecules. As the concentration increases, hydrogen atoms are extremely easy to penetrate into the optical fiber 23 and combine with the oxygen bonds in the silica of the optical fiber 23 to form hydrogen loss, which will cause attenuation of the signal of the optical fiber 23. The hydrogen-absorbing water-blocking fiber paste is a high-quality hydrogen-absorbing and water-blocking material, which can ensure good water-blocking performance and anti-hydrogen-loss performance. There are five optical fiber units 20, and the five optical fiber units 20 are evenly twisted around the periphery of the central strengthening member 10.

[0031] The sleeve 30 is coated outside the multiple optical fiber units 20. A plurality of first strengthening cores 80 are arranged between the sleeve 30 and the multiple optical fiber units 20. Each first strengthening core 80 is arranged between two adjacent optical fiber units 20. In this embodiment, the sleeve 30 is made of PA, PE, or LSZH material, and the sleeve 30 has the characteristics of being resistant to weak acids, weak alkalis, salt corrosion, high cold, and high temperature. A water-blocking cable paste 90 is filled between the sleeve 30, the multiple optical fiber units 20, and the plurality of first strengthening cores 80, which can enhance the waterproof performance of the product. There are five first strengthening cores 80.

[0032] The water-blocking tape 40 is coated outside the sleeve 30. The water-blocking tape 40 can effectively prevent water and moisture, and improve the durability of the optical cable. The second shielding layer 50 is coated outside the water-blocking tape 40. The aramid yarn strengthening layer 60 is coated outside the second shielding layer 50. The aramid yarn strengthening layer 60 has high strength and excellent anti-deformation ability, tensile performance, corrosion resistance, and wear resistance.

[0033] The wear-resistant layer 70 is coated outside the aramid yarn strengthening layer 60. A plurality of convex strips 71 protrude outward from the outer surface of the wear-resistant layer 70. In this embodiment, the wear-resistant layer 70 is made of rubber material, which has good wear resistance and aging resistance and high elasticity. The convex strips 71 are semi-circular. A plurality of second strengthening cores 72 are arranged in the wear-resistant layer 70 to further increase the strength of the optical cable and enhance the tensile performance of the optical cable.

[0034] The design focus of the present utility model lies in:

[0035] Through the setting and cooperation of the central strengthening member, stainless steel tube, first strengthening core and aramid yarn strengthening layer, and by evenly stranding multiple optical fiber units around the central strengthening member, the optical cable has stronger tensile performance, greatly increasing the strength of the optical cable. When the optical cable is subjected to external forces, it is not easily broken. The wear-resistant layer is coated outside the aramid yarn strengthening layer, and multiple convex strips protrude outward from the outer surface of the wear-resistant layer, which can effectively enhance the wear-resistant performance of the optical cable, extend the service life of the optical cable, and improve the product quality. Moreover, by setting the first shielding layer and the second shielding layer, this double-shielding layer structure can greatly improve the shielding performance of the optical cable and is not easily affected by external interference. The water-blocking tape is provided to effectively improve the waterproof performance of the optical cable, ensure the optical signal transmission quality, enhance the user experience, bring convenience to users, and meet the existing needs.

[0036] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A highly efficient shielded tensile OPGW stranded optical cable, characterized in that: The invention comprises a central reinforcement member, a plurality of optical fiber units, a sleeve, a water-blocking tape, a second shielding layer, an aramid yarn reinforcement layer and a wear-resistant layer; the plurality of optical fiber units are evenly twisted around the periphery of the central reinforcement member, each optical fiber unit comprises a stainless steel tube, a first shielding layer and a plurality of optical fibers, the stainless steel tube is filled with fiber paste, the plurality of optical fibers are arranged in the stainless steel tube and embedded in the fiber paste, and the first shielding layer is coated on the outside of the stainless steel tube; the sleeve is coated on the periphery of the plurality of optical fiber units, a plurality of first reinforcement cores are arranged between the sleeve and the plurality of optical fiber units, and each first reinforcement core is arranged between two adjacent optical fiber units; the water-blocking tape is coated on the outside of the sleeve; the second shielding layer is coated on the outside of the water-blocking tape; the aramid yarn reinforcement layer is coated on the outside of the second shielding layer; the wear-resistant layer is coated on the outside of the aramid yarn reinforcement layer, and the outer surface of the wear-resistant layer is provided with a plurality of convex strips protruding outwards.

2. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The central reinforcement is made of TPU material.

3. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The stainless steel pipe is a 304 stainless steel pipe that is continuously welded by laser.

4. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The fiber paste is a hydrogen absorbing water-blocking fiber paste.

5. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The sleeve is made of PA, PE or LSZH material.

6. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The wear-resistant layer is made of rubber.

7. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The convex strip is semicircular.

8. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: A plurality of second reinforcing cores are arranged in the wear-resistant layer.

9. The high-efficiency shielded tensile-resistant OPGW stranded optical cable according to claim 1, characterized in that: The space between the sleeve, the plurality of optical fiber units and the plurality of first strength cores is filled with water-blocking cable paste.

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