Environment-friendly optical cable filling rope

Abstract

The utility model discloses an environment-friendly optical cable filling rope. The environment-friendly optical cable filling rope comprises an inner core, a flame-retardant layer II and a flame-retardant layer I, the surface of the inner core is provided with a buffer layer, the surface of the buffer layer is provided with a nylon woven layer, the second flame-retardant layer is arranged on the surface of the nylon woven layer, and the first flame-retardant layer is arranged on the surface of the second flame-retardant layer. When the optical cable burns, the influence on the filling rope is small, multiple times of flame retardance can be effectively carried out on the outer surface of the whole filling rope, the possibility that the whole filling rope burns can be greatly reduced, namely, the possibility of smoke generation is reduced, and the service life of the cable is prolonged. Therefore, the filling rope has the effects of better flame retardance, smaller possibility of generating smoke and improved environmental protection property.

Description

Technical Field

[0001] This utility model relates to the field of filler rope technology, specifically an environmentally friendly optical cable filler rope. Background Technology

[0002] Optical cable filler rope is a rope-like material used to fill the gaps inside an optical cable. Its main function is to protect the optical cable core wires, reduce the degree of freedom of the optical cable core wires, and improve the mechanical strength and resistance to external forces of the optical cable.

[0003] A Chinese patent application (CN202420963185.5) discloses an anti-extrusion cable filler rope, which states: "It includes an inner conductor and single-strand ropes. An arc-shaped groove is formed on the outer surface of the inner conductor, and a single-strand rope is disposed within the arc-shaped groove. Multiple single-strand ropes are twisted to form the outer surface of the inner conductor. Multiple arc-shaped grooves are spirally formed on the outer surface of the inner conductor. The inner conductor is made of stainless steel. A shielding layer is provided on the outer side of the single-strand ropes, and a flame-retardant layer is provided on the outer side of the shielding layer. This invention, by placing an inner conductor between multiple single-strand ropes, makes the filler rope more compact. The inner conductor also increases the contact surface between them. When the filler rope is subjected to extrusion pressure, the larger contact surface can disperse the extrusion pressure, making it less prone to deformation during use, reducing wear and tear, extending its service life, and thus improving the overall tensile strength of the filler rope."

[0004] Through a search of the aforementioned patent technologies, we found that this type of filling rope still has certain defects in use:

[0005] Although the filler rope mentioned above has certain resistance to compression and tension, its flame retardant properties are still poor. When optical cables or electrical cables catch fire due to external factors, they will inevitably affect the filler rope, which may also lead to the filler rope catching fire. If the filler rope cannot effectively resist flame and becomes passively combusted, it will produce more smoke, thereby aggravating the smoke pollution to the environment. In other words, the existing filler rope has the problem of poor flame retardancy and produces smoke that is not environmentally friendly after burning. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly optical cable filling rope, comprising an inner core, a second flame-retardant layer, and a first flame-retardant layer; a buffer layer is provided on the surface of the inner core, a nylon braided layer is provided on the surface of the buffer layer, the second flame-retardant layer is provided on the surface of the nylon braided layer, and the first flame-retardant layer is provided on the surface of the second flame-retardant layer.

[0008] As a further embodiment of this utility model: the flame-retardant layer one is woven from multiple alumina fibers and covers the surface of the flame-retardant layer two, and a flame-retardant PC film is also fixed on the surface of the flame-retardant layer two.

[0009] As a further embodiment of this utility model: the second flame-retardant layer is made of polytetrafluoroethylene and is coated on the surface of the nylon braided layer, and the thickness of the second flame-retardant layer is greater than that of the first flame-retardant layer.

[0010] As a further embodiment of this utility model: a cavity is provided between the flame-retardant layer two and the buffer layer, the nylon braided layer is located in the cavity, the nylon braided layer is made of multiple nylon fibers and covers the outside of the buffer layer and is fixed to the inside of the flame-retardant layer two.

[0011] As a further embodiment of this utility model: the buffer layer has a buffer cavity inside, and a buffer block one is fixed in a ring at equal intervals on one side of the inner wall of the buffer cavity, and a buffer block two is fixed in a ring at equal intervals on the other side of the inner wall of the buffer cavity.

[0012] As a further embodiment of this utility model: the buffer block one and the buffer block two are spaced apart in the buffer cavity and do not contact each other. A connecting block is fixed on one side of each of the buffer block one and the buffer block two, and the other side of the connecting block is fixed on the inner wall of the buffer cavity.

[0013] As a further embodiment of this utility model: the first buffer block, the second buffer block, and the connecting block are all made of silicone.

[0014] As a further embodiment of this utility model: the inner core is filled with the interior of the buffer layer.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] I. In this application, through the design of flame-retardant PC film, flame-retardant layer two, and flame-retardant layer one, the impact on the filler rope when the optical cable burns is small. It can effectively perform multiple flame retardant treatments on the entire surface of the filler rope, which can greatly reduce the possibility of the filler rope burning as a whole, that is, reduce the possibility of smoke generation. Thus, the filler rope has better flame retardancy, less possibility of smoke generation, and improves its environmental protection.

[0017] Second, in this application, by setting a nylon braided layer inside the filler rope, the tensile strength of the entire filler rope can be effectively improved, reducing the possibility of breakage, making it more practical in actual use.

[0018] Third, in this application, the design of the buffer layer, buffer block one, and buffer block two structures can effectively improve the compressive strength of the entire filling rope. When under pressure, the deformation of buffer block one and buffer block two buffers the pressure, thereby reducing the impact on the inner core and extending the service life of the filling rope. Attached Figure Description

[0019] Figure 1 This is a side sectional view of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the flame-retardant layer one of this utility model.

[0021] The reference numerals and names in the figure are as follows:

[0022] 1. Inner core; 2. Buffer layer; 3. Cavity; 4. Nylon braided layer; 5. Flame retardant layer two; 6. Flame retardant layer one; 7. Buffer cavity; 8. Buffer block one; 9. Buffer block two; 10. Connecting block; 11. Flame retardant PC film. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-2 An environmentally friendly optical cable filler rope includes an inner core 1, a second flame-retardant layer 5, and a first flame-retardant layer 6; a buffer layer 2 is provided on the surface of the inner core 1, a nylon braided layer 4 is provided on the surface of the buffer layer 2, the second flame-retardant layer 5 is provided on the surface of the nylon braided layer 4, and the first flame-retardant layer 6 is provided on the surface of the second flame-retardant layer 5.

[0025] Please see Figure 1 and Figure 2 In this embodiment, flame retardant layer 6 is woven from multiple alumina fibers and covers the surface of flame retardant layer 5. Flame retardant PC film 11 is also fixed on the surface of flame retardant layer 5.

[0026] Specifically, the flame-retardant layer 6 is made of alumina fiber. Due to its high-performance flame-retardant ability, alumina fiber can form a good flame-retardant barrier on the outside of the optical cable filler rope, which can prevent the combustion of the internal materials of the optical cable filler rope. Furthermore, a flame-retardant PC film 11 is also set on the surface of the flame-retardant layer 6. The flame-retardant PC film 11 is a high-performance film material made of polycarbonate as the main raw material and specially modified for flame retardant properties. It has good flame-retardant properties and can quickly self-extinguish when it encounters a fire source, reducing the spread of fire. Thus, together with the flame-retardant layer 6, a more effective flame-retardant barrier is formed on the outside of the optical cable filler rope.

[0027] Please see Figure 1 In this embodiment, flame retardant layer 2 5 is made of polytetrafluoroethylene and covers the surface of nylon braided layer 4, and the thickness of flame retardant layer 2 5 is greater than that of flame retardant layer 1 6.

[0028] Specifically, the flame retardant layer 25 made of polytetrafluoroethylene (PTFE) has extremely high stability due to the compact and stable molecular structure of PTFE. It is not easily broken by external energy, and during combustion, extremely high temperatures are required to damage it, thus effectively preventing further combustion.

[0029] Please see Figure 1 In this embodiment, a cavity 3 is provided between the flame-retardant layer 2 5 and the buffer layer 2. The nylon braided layer 4 is located in the cavity 3. The nylon braided layer 4 is made of multiple nylon fibers and covers the outside of the buffer layer 2 and is fixed to the inside of the flame-retardant layer 2 5. The buffer layer 2 has a buffer cavity 7 inside. Buffer blocks 1 8 are fixed in a ring at equal intervals on one side of the inner wall of the buffer cavity 7, and buffer blocks 2 9 are fixed in a ring at equal intervals on the other side of the inner wall of the buffer cavity 7. Buffer blocks 1 8 and buffer blocks 2 9 are spaced apart in the buffer cavity 7 and do not contact each other. A connecting block 10 is fixed on one side of both buffer blocks 1 8 and buffer blocks 2 9, and the other side of the connecting block 10 is fixed to the inner wall of the buffer cavity 7.

[0030] Specifically, the nylon braided layer 4 is made of nylon fibers, which has good flexibility to ensure the normal bending of the filling rope, and high tensile strength to improve the tensile performance of the filling rope. When the filling rope is squeezed, the squeezing pressure is transmitted to the buffer layer 2. The buffer block 8 and buffer block 9 inside the buffer layer 2 will deform under pressure, thereby buffering the pressure and reducing the impact on the inner core 1. The connecting block 10 on the buffer block 8 and buffer block 9 ensures the overall stability of the buffer layer 2.

[0031] Please see Figure 1 In this embodiment, buffer block 8, buffer block 9, and connecting block 10 are all made of silicone.

[0032] Specifically, the buffer block 8, buffer block 9, and connecting block 10, all made of silicone, provide good deformation capacity due to the softness of silicone, thus buffering the pressure.

[0033] Please see Figure 1 In this embodiment, the inner core 1 fills the interior of the buffer layer 2.

[0034] Specifically, the inner core 1 fills the interior of the buffer layer 2, which can ensure the stability of the inner core 1, improve the tightness of the structure, and enhance the stability of the entire filling rope.

[0035] When in use: the flame-retardant PC film 11 on the filler rope can provide initial flame retardancy, while the flame-retardant layer 1 6 provides secondary flame retardancy, and the flame-retardant layer 2 5 provides further flame retardancy, thereby preventing the flame from contacting the inner core 1 and effectively reducing the possibility of the inner core 1 burning, thus improving the flame-retardant performance of the entire filler rope.

[0036] When the filling rope is stretched, the nylon braided layer 4 has good tensile strength, thereby reducing the possibility of the filling rope breaking and improving the tensile performance of the filling rope. When the filling rope is compressed, the external compressive force acts on the buffer layer 2. The buffer layer 2 has a buffer cavity 7, which causes the buffer block 8 and the buffer block 9 to deform in the buffer cavity 7, thereby buffering the compressive force on the filling rope, reducing the impact on the inner core 1, and thus improving the compressive strength of the filling rope.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An environmentally friendly optical cable filling yarn, characterized by, It includes an inner core (1), a second flame-retardant layer (5), and a first flame-retardant layer (6); The inner core (1) has a buffer layer (2) on its surface, the buffer layer (2) has a nylon braided layer (4) on its surface, the second flame retardant layer (5) is disposed on the surface of the nylon braided layer (4), and the first flame retardant layer (6) is disposed on the surface of the second flame retardant layer (5).

2. The environmentally friendly optical cable filling yarn according to claim 1, wherein The flame-retardant layer one (6) is woven from multiple alumina fibers and covers the surface of the flame-retardant layer two (5). The surface of the flame-retardant layer two (5) is also fixed with a flame-retardant PC film (11).

3. The environmentally friendly optical cable filling yarn of claim 1, wherein, The second flame retardant layer (5) is made of polytetrafluoroethylene and covers the surface of the nylon braided layer (4). The second flame retardant layer (5) is thicker than the first flame retardant layer (6).

4. The environmentally friendly optical cable filling yarn of claim 1, wherein, A cavity (3) is provided between the flame-retardant layer 2 (5) and the buffer layer (2). The nylon braided layer (4) is located in the cavity (3). The nylon braided layer (4) is made of multiple nylon fibers and covers the outside of the buffer layer (2) and is fixed to the inside of the flame-retardant layer 2 (5).

5. The environmentally friendly optical cable filling yarn of claim 1, wherein, The buffer layer (2) has a buffer cavity (7) inside. Buffer block 1 (8) is fixed in a ring at equal intervals on one side of the inner wall of the buffer cavity (7), and buffer block 2 (9) is fixed in a ring at equal intervals on the other side of the inner wall of the buffer cavity (7).

6. The environmentally friendly optical cable filling yarn of claim 5, wherein, The buffer block 1 (8) and buffer block 2 (9) are spaced apart in the buffer cavity (7) and do not contact each other. A connecting block (10) is fixed on one side of each of the buffer block 1 (8) and buffer block 2 (9), and the other side of the connecting block (10) is fixed on the inner wall of the buffer cavity (7).

7. The environmentally friendly optical cable filling yarn of claim 6, wherein, The buffer block one (8), buffer block two (9) and connecting block (10) are all made of silicone.

8. The environmentally friendly optical cable filling yarn of claim 1, wherein, The inner core (1) fills the interior of the buffer layer (2).

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