Stretch-resistant layer-stranded optical cable

Abstract

The utility model discloses a tensile layer-stranded optical cable, comprising a central reinforcing core, the outer side of the central reinforcing core is provided with at least two stranded optical fiber units, the outer side of the optical fiber units is provided with an inner sheath, the outer side of the inner sheath is provided with a tensile layer, the tensile layer is formed by weaving high-strength fibers, and the inner sheath is provided with an outer sheath. And an outer sheath is arranged on the outer side of the tensile layer. According to the tensile layer-stranded optical cable, the center reinforcing core serves as a core supporting structure of the optical cable, most of tensile force can be borne, the optical cable is effectively prevented from being broken due to excessive tensile force, meanwhile, the rigidity of the center reinforcing core is beneficial to keeping the shape and stability of the optical cable, and the tensile layer arranged on the outer side of the optical fiber unit can resist tensile force. And the tensile layer is formed by weaving high-strength fibers, so that the tensile capability of the optical cable is further enhanced, and when the optical cable is stretched by external force, the tensile layer can absorb and disperse stress and protect the internal optical fiber unit from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of optical cable technology, specifically to a tensile-resistant stranded optical cable. Background Technology

[0002] In modern communication networks, optical cables serve as a crucial medium for information transmission, and their stability and reliability are paramount. With the continuous development of communication technology, optical cables not only need to possess high-speed, high-capacity transmission capabilities but also need to maintain stable transmission performance in various complex environments. Especially in special application scenarios, such as outdoor, underground, and submarine environments, optical cables need to withstand greater tensile forces. Traditional optical cable structures often suffer from insufficient tensile strength and low durability; some optical cables are prone to transmission performance degradation due to the breakage of internal fiber units when subjected to external tensile forces. Utility Model Content

[0003] The purpose of this invention is to provide a tensile-resistant stranded optical cable. The central reinforcing core serves as the core support structure of the cable, enabling it to withstand most of the tensile force and effectively preventing breakage due to excessive stretching. Simultaneously, the rigidity of the central reinforcing core helps maintain the shape and stability of the cable. An anti-tensile layer, woven from high-strength fibers, is placed on the outside of the optical fiber unit, further enhancing the cable's tensile strength. This allows the anti-tensile layer to absorb and disperse stress when the cable is subjected to external stretching, protecting the internal optical fiber unit from damage, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A tensile-resistant stranded optical cable includes a central reinforcing core, at least two twisted optical fiber units are disposed on the outer side of the central reinforcing core, an inner sheath is disposed on the outer side of the optical fiber units, a tensile-resistant layer is disposed on the outer side of the inner sheath, the tensile-resistant layer is woven from high-strength fibers, and an outer sheath is disposed on the outer side of the tensile-resistant layer.

[0006] Preferably, the central reinforcing core is made of glass fiber reinforced plastic.

[0007] Preferably, the optical fiber unit includes a loose tube, a filler rope, and at least two optical fibers. The filler rope is disposed at the center of the loose tube, and the at least two optical fibers are twisted together with the filler rope as the center and disposed inside the loose tube.

[0008] Preferably, the inner sheath is made of a low-smoke, halogen-free flame-retardant material.

[0009] Preferably, the tensile layer is tightly wrapped around the outside of the optical fiber unit by spiral winding to form a uniform and continuous protective layer.

[0010] Preferably, the high-strength fiber is aramid fiber.

[0011] Preferably, the outer sheath is made of polyethylene or polyvinyl chloride.

[0012] Preferably, a water-blocking layer is provided on the outer side of the tensile layer, and the water-blocking layer is made of a water-absorbing and expanding material.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This tensile-resistant stranded optical cable uses a central reinforcing core as its core support structure, capable of withstanding most of the tensile force and effectively preventing the cable from breaking due to excessive stretching. Simultaneously, the rigidity of the central reinforcing core helps maintain the cable's shape and stability. An anti-tensile layer, woven from high-strength fibers, is placed on the outside of the fiber optic units, further enhancing the cable's tensile strength. When the cable is subjected to external tensile forces, the anti-tensile layer absorbs and disperses stress, protecting the internal fiber optic units from damage. The inner and outer sheaths further enhance the cable's durability. The inner sheath provides additional physical protection against internal damage, while the outer sheath possesses excellent weather resistance and abrasion resistance, enabling it to withstand the erosion of the cable by various harsh environments. Attached Figure Description

[0015] Figure 1 A schematic diagram of a tensile-resistant stranded optical cable provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the optical fiber unit of a tensile-resistant stranded optical cable provided by this utility model.

[0017] In the diagram: 1. Central reinforcing core; 2. Fiber optic unit; 201. Loose tube; 202. Filler rope; 203. Fiber optic cable; 3. Inner sheath; 4. Tensile layer; 5. Outer sheath; 6. Water-blocking layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2 This utility model provides a tensile-resistant stranded optical cable, including a central reinforcing core 1, at least two twisted optical fiber units 2 are provided on the outside of the central reinforcing core 1, an inner sheath 3 is provided on the outside of the optical fiber unit 2, a tensile-resistant layer 4 is provided on the outside of the inner sheath 3, the tensile-resistant layer 4 is woven from high-strength fibers, and an outer sheath 5 is provided on the outside of the tensile-resistant layer 4.

[0021] This tensile-resistant stranded optical cable uses a central reinforcing core 1 as the core support structure, which can withstand most of the tensile force and effectively prevent the optical cable from breaking due to excessive stretching. At the same time, the rigidity of the central reinforcing core 1 also helps to maintain the shape and stability of the optical cable. The tensile-resistant layer 4, which is made of high-strength fiber braiding, is set on the outside of the optical fiber unit 2, further enhancing the tensile strength of the optical cable. When the optical cable is subjected to external stretching, the tensile-resistant layer 4 can absorb and disperse stress, protecting the internal optical fiber unit 2 from damage. The inner sheath 3 and the outer sheath 5 further enhance the durability of the optical cable. The inner sheath 3 provides additional physical protection to prevent damage to the inside of the optical cable, while the outer sheath 5 has excellent weather resistance and abrasion resistance, and can resist the corrosion of the optical cable by various harsh environments.

[0022] The central reinforcing core 1 is made of glass fiber reinforced plastic, which has good compressive and bending resistance, effectively supporting the internal structure of the optical cable and preventing structural deformation or damage caused by external forces.

[0023] The optical fiber unit 2 includes a loose tube 201, a filler rope 202, and at least two optical fibers 203. The filler rope 202 is located at the center of the loose tube 201, and the at least two optical fibers 203 are twisted together around the filler rope 202 and arranged inside the loose tube 201. The loose tube 201 provides additional protection for the optical fibers 203. The filler rope 202 plays a supporting role in the optical fiber unit 2, making the optical fiber unit 2 more robust and durable, and able to withstand greater tension and bending. When the optical cable is subjected to external force, the filler rope 202 can effectively disperse the stress, prevent the optical cable from deforming or breaking due to excessive compression or stretching, and reduce the risk of damage to the optical fibers 203 due to external force. The twisted design of the optical fibers 203 inside the loose tube 201 improves the flexibility of the optical cable, enabling it to adapt to different bending requirements.

[0024] The inner sheath 3 is made of low-smoke, halogen-free flame-retardant material, which not only provides additional physical protection to prevent damage to the optical cable caused by external forces, but also ensures that the optical cable is not easily ignited in emergency situations such as fires, and releases less harmful gases, thus improving the safety of the optical cable. The outer sheath 5 is made of polyethylene or polyvinyl chloride material. Polyethylene or polyvinyl chloride material has excellent weather resistance and can resist the corrosion of optical cables by various harsh environments. It is suitable for installation and use in various complex environments, and also has good abrasion resistance, which can reduce the wear and tear of optical cables during installation and use.

[0025] The tensile layer 4 is tightly wrapped around the outside of the optical fiber unit 2 by a spiral winding method, forming a uniform and continuous protective layer. The spiral winding method allows the tensile layer 4 to be tightly wrapped around the outside of the optical fiber unit 2, forming a uniform and continuous protective layer, which further improves the tensile performance of the optical cable and also helps the optical cable maintain stable transmission performance in complex environments. The high-strength fiber is aramid fiber, which has excellent mechanical strength and can enhance its tensile strength without affecting the bending performance of the optical cable. It also has good flexibility, making the optical cable less prone to damage when bent, thus improving the durability of the optical cable.

[0026] A water-blocking layer 6 is provided on the outside of the tensile layer 4. The water-blocking layer 6 is made of water-absorbing and expanding material to effectively prevent water from penetrating into the optical cable. The water-blocking layer 6 is made of water-absorbing and expanding material, which can effectively prevent water from penetrating into the optical cable, prevent the optical cable from being damaged by water erosion, help extend the service life of the optical cable, and improve the reliability and stability of the optical cable.

[0027] In summary, this tensile-resistant stranded optical cable is a high-performance, high-reliability tensile-resistant, water-blocking stranded optical cable suitable for applications in various complex environments.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile resistant layer stranded optical cable characterized by: The center reinforcing core (1) is provided with at least two twisted optical fiber units (2) on the outside, the optical fiber units (2) are provided with an inner sheath (3) on the outside, the inner sheath (3) is provided with a tensile-resistant layer (4) on the outside, the tensile-resistant layer (4) is woven by high-strength fibers, and the tensile-resistant layer (4) is provided with an outer sheath (5) on the outside.

2. A stretch-resistant layer-stranded optical cable according to claim 1, characterized in that: The center reinforcing core (1) is made of glass fiber reinforced plastic.

3. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The optical fiber unit (2) comprises a loose sleeve (201), a filling rope (202) and at least two optical fibers (203), the filling rope (202) is arranged at the center of the loose sleeve (201), and the at least two optical fibers (203) are arranged in the loose sleeve (201) in a twisted manner with the filling rope (202) as the center.

4. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The inner sheath (3) is made of low-smoke halogen-free flame-retardant material.

5. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The tensile-resistant layer (4) is tightly wrapped on the outside of the optical fiber unit (2) in a spiral winding manner to form a uniform and continuous protective layer.

6. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The high-strength fiber is aramid fiber.

7. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The outer sheath (5) is made of polyethylene or polyvinyl chloride material.

8. The stretch-resistant layer-stranded optical cable of claim 1, wherein: The outer side of the tensile-resistant layer (4) is provided with a water-blocking layer (6), and the water-blocking layer (6) is made of water-absorbing expansion material.

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