High-temperature-resistant flame-retardant optical fiber cable
By introducing reinforcement mechanisms and protective structures into optical fibers and cables, the problem of damage to optical cables under crushing and impact has been solved, and the safety and stability under high-temperature environments have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TX PLASTIC OPTICAL FIBERS
- Filing Date
- 2025-03-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing high-temperature resistant and flame-retardant optical fiber cables are easily damaged by crushing or impact during use, affecting their safety and stability.
An optical fiber cable including an optical cable shell, a reinforcing mechanism, and a protective structure was designed. The inner wall of the optical cable shell is fixed with a protective layer, a reinforcing layer, and a wrapping layer, while the outer wall has a high-temperature resistant layer, a flame-retardant layer, and a wear-resistant layer. The spiral metal sheet layer enhances the compression and impact resistance, and the polyimide coating, polyvinyl chloride layer, and rubber layer improve the high-temperature resistance and flame-retardant performance.
It significantly improves the mechanical stability and pressure and impact resistance of optical fiber cables, extends their service life, and enhances their safety and reliability in high-temperature environments.
Smart Images
Figure CN224536230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical fiber and cable technology, and in particular to a high-temperature resistant and flame-retardant optical fiber and cable. Background Technology
[0002] Optical fiber, as a crucial transmission medium in modern communications, is widely used in telecommunications, cable television, and the internet. However, in certain special environments, such as high-temperature or fire-prone locations, traditional optical fiber cables may face the risk of performance degradation or damage, thus affecting the stability and security of communications. Therefore, there is a need to design a high-temperature resistant, flame-retardant optical fiber cable. To address this, patent CN207352231U discloses a high-temperature resistant and flame-retardant optical fiber cable, comprising multiple tight-buffered optical fibers. The outer surface of the tight-buffered optical fibers is filled with aramid fiber filler. From the inside out, the outer surface of the aramid fiber filler is sequentially coated with a high-temperature resistant and waterproof layer, a polyimide coating, and an LCP sheath. The tight-buffered optical fiber includes a fiber core, the surface of which is sequentially coated with a TPEE coating and a radiation-resistant coating. The high-temperature resistant and flame-retardant optical fiber cable provided by this invention uses materials with an operating temperature of no less than 200°C. Compared with traditional optical cables using polyethylene sheaths with a melting point of 100-130°C, this significantly improves the high-temperature resistant and flame-retardant characteristics and stability of the optical fiber cable, enhances its strength and reliability, prevents failure in high-temperature environments, and extends its service life.
[0003] While the high-temperature resistant and flame-retardant optical fiber cable mentioned above can prevent the optical fiber cable from failing in special high-temperature environments, it will damage the optical fiber if it is crushed or impacted during use. Therefore, it is necessary to design a high-temperature resistant and flame-retardant optical fiber cable. Utility Model Content
[0004] The purpose of this invention is to provide a high-temperature resistant and flame-retardant optical fiber cable to solve the defect that existing high-temperature resistant and flame-retardant optical fiber cables will damage the optical fiber when subjected to crushing or impact during use.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-temperature resistant and flame-retardant optical fiber cable, including an optical cable outer shell; A reinforcing mechanism is fixed on the inner wall of the optical cable outer shell. The reinforcing mechanism includes a protective layer, a reinforcing layer, and a wrapping layer. The protective layer is fixed on the inner wall of the optical cable outer shell. A reinforcing layer is fixed on the inner wall of the protective layer. A wrapping layer is fixed on the inner wall of the reinforcing layer. The inner side of the wrapping layer is uniformly provided with optical fiber cores. A protective structure is fixed to the outer wall of the optical cable shell. The protective structure includes a high-temperature resistant layer, a flame-retardant layer, and a wear-resistant layer. The high-temperature resistant layer is fixed to the outer wall of the optical cable shell. A flame-retardant layer is fixed to the outer wall of the high-temperature resistant layer. A wear-resistant layer is fixed to the outer wall of the flame-retardant layer.
[0006] Furthermore, the reinforcing layer is a spiral metal sheet layer.
[0007] Furthermore, the optical fiber cores are evenly distributed on the inner side of the cladding layer.
[0008] Furthermore, a shielding layer is fixed on the outer wall of each optical fiber core.
[0009] Furthermore, the high-temperature resistant layer is a polyimide coating.
[0010] Furthermore, the flame-retardant layer is a polyvinyl chloride layer.
[0011] Furthermore, the wear-resistant layer is a rubber layer.
[0012] The high-temperature resistant and flame-retardant optical fiber cable provided by this utility model has the following advantages: By incorporating a reinforcement mechanism, the sheathing layer tightly bundles and secures the fiber cores; the reinforcement layer effectively enhances the cable's resistance to pressure and impact, ensuring the safe use of the fiber cores; and the protective layer provides isolation and protection to the outer wall of the reinforcement layer, extending its service life. In summary, this reinforcement mechanism provides the optical cable with reliable mechanical strengthening, significantly improving the safety of this high-temperature resistant, flame-retardant optical fiber cable. By incorporating a protective structure, the wear-resistant layer protects the flame-retardant and high-temperature resistant layers from wear, the flame-retardant layer prevents the optical cable from being damaged by fire during use, and the high-temperature resistant layer prevents it from being burned under high-temperature conditions. This design enables the device to facilitate the handling of the optical cable and improves the safety of the high-temperature resistant and flame-retardant optical fiber cable during use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model; Figure 5 This is a schematic diagram of the overall exploded three-dimensional structure of this utility model.
[0014] The following are the labels in the figure: 1. Optical cable outer shell; 2. Reinforcing mechanism; 21. Protective layer; 22. Reinforcing layer; 23. Wrapping layer; 3. Optical fiber core; 4. Protective structure; 41. High temperature resistant layer; 42. Flame retardant layer; 43. Wear resistant layer. Detailed Implementation
[0015] 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.
[0016] Please see Figures 1-5 The present invention provides a high-temperature resistant and flame-retardant optical fiber cable, including an optical cable outer shell 1.
[0017] Reference Figures 1-5 A reinforcing mechanism 2 is fixed on the inner wall of the optical cable outer shell 1. The reinforcing mechanism 2 includes a protective layer 21, a reinforcing layer 22, and a wrapping layer 23. The protective layer 21 is fixed on the inner wall of the optical cable outer shell 1. The reinforcing layer 22 is fixed on the inner wall of the protective layer 21. The wrapping layer 23 is fixed on the inner wall of the reinforcing layer 22. The reinforcing layer 22 is a spiral metal sheet layer.
[0018] The cladding layer 23 can be used to fix the optical fiber core 3 together as a whole, so as to prevent the optical fiber core 3 from being misaligned or moved during use. The reinforcing layer 22 is spirally wound around the outer layer of the cladding layer 23 to form a spiral reinforcing structure, which can enhance the lateral pressure resistance of the optical fiber core 3 and improve the mechanical stability of the optical cable during use. The protective layer 21 is fixed on the outside of the reinforcing layer 22 to protect the outer wall of the reinforcing layer 22.
[0019] Reference Figures 1-5 The inner side of the wrapping layer 23 is uniformly provided with optical fiber cores 3, which are evenly distributed on the inner side of the wrapping layer 23. The outer side wall of each optical fiber core 3 is fixed with a shielding layer. The outer wall of the optical cable shell 1 is fixed with a protective structure 4, which includes a high temperature resistant layer 41, a flame retardant layer 42, and a wear-resistant layer 43. The high temperature resistant layer 41 is fixed on the outer wall of the optical cable shell 1. The flame retardant layer 42 is fixed on the outer wall of the high temperature resistant layer 41. The wear-resistant layer 43 is fixed on the outer wall of the flame retardant layer 42. The high temperature resistant layer 41 is a polyimide coating, the flame retardant layer 42 is a polyvinyl chloride layer, and the wear-resistant layer 43 is a rubber layer.
[0020] The high-temperature resistant layer 41 is a polyimide coating with extremely high thermal stability, which can remain stable in high-temperature environments. The flame-retardant layer 42 is a polyvinyl chloride layer with good flame retardancy. During combustion, polyvinyl chloride can slow down the spread of fire and reduce the risk of fire. The wear-resistant layer 43 is a rubber layer, which can improve the flexibility and wear resistance of the optical cable.
[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A high-temperature resistant and flame-retardant optical fiber cable, comprising an optical cable outer shell (1); Its features are: A reinforcing mechanism (2) is fixed on the inner wall of the optical cable outer shell (1). The reinforcing mechanism (2) includes a protective layer (21), a reinforcing layer (22), and a wrapping layer (23). The protective layer (21) is fixed on the inner wall of the optical cable outer shell (1). The reinforcing layer (22) is fixed on the inner wall of the protective layer (21). The wrapping layer (23) is fixed on the inner wall of the reinforcing layer (22). The inner side of the wrapping layer (23) is uniformly provided with optical fiber cores (3); A protective structure (4) is fixed on the outer wall of the optical cable shell (1). The protective structure (4) includes a high temperature resistant layer (41), a flame retardant layer (42), and a wear-resistant layer (43). The high temperature resistant layer (41) is fixed on the outer wall of the optical cable shell (1). A flame retardant layer (42) is fixed on the outer wall of the high temperature resistant layer (41). A wear-resistant layer (43) is fixed on the outer wall of the flame retardant layer (42).
2. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: The reinforcing layer (22) is a spiral metal sheet.
3. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: The optical fiber cores (3) are evenly distributed on the inner side of the cladding layer (23).
4. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: A shielding layer is fixed on the outer wall of each optical fiber core (3).
5. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: The high-temperature resistant layer (41) is a polyimide coating.
6. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: The flame retardant layer (42) is a polyvinyl chloride layer.
7. The high-temperature resistant and flame-retardant optical fiber cable according to claim 1, characterized in that: The wear-resistant layer (43) is a rubber layer.