Novel lightning-protection, flame-retardant and heat-insulation layer-stranded OPGW composite optical cable

Abstract

The utility model relates to the technical field of optical fibers, and provides a novel lightning-proof, flame-retardant and heat-insulating layer-stranded OPGW (Optical Fiber Composite Overhead Ground Wire) composite optical cable, which comprises a plurality of cable cores which are wound into a bundle; the first protection layer is wound on the outer surfaces of the plurality of cable cores; the second protection layer is arranged on the outer surface of the first protection layer, the first protection layer is made of a flexible material, and the second protection layer is made of a rigid material. According to the technical scheme, the problem that a novel OPGW composite optical cable in the prior art is insufficient in strength and stability is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber, specifically, and relates to a lightning protection, flame-retardant, heat-insulating novel layer-twisted OPGW composite optical cable. BACKGROUND

[0002] In the modern communication field, as an important carrier of information transmission, the performance and reliability of optical cable are crucial. With the continuous development of communication technology, the requirements for optical cable are also increasing.

[0003] OPGW composite optical cable (Optical Fiber Composite Overhead Ground Wire), also known as optical fiber composite overhead ground wire. It is a kind of power special optical cable that composites optical fiber unit in overhead ground wire. OPGW not only has the lightning protection function of overhead ground wire, but also can realize large-capacity information transmission through the optical fiber in it. There are some deficiencies in the actual application of traditional OPGW composite optical cable. For example, in thunderstorm weather, on the one hand, the current caused by lightning leads to high-temperature combustion or interruption damage of the optical cable, and on the other hand, the lightning causes the signal of the optical cable to fluctuate and form error code, affecting communication transmission and other problems. In addition, the connection and disassembly method of the protective layer is not convenient, often requiring complex operation and special equipment, and the surface of the optical cable is easy to leave residual adhesive after disassembly, affecting subsequent fusion and communication. In addition, the structure of the traditional optical cable has shortcomings in strengthening performance, and it is difficult to effectively cope with lightning, fire and damage and gnawing of external objects. In order to meet the growing demand for communication, improve the reliability, stability and durability of the optical cable, it is urgent to develop a new type of layer-twisted OPGW composite optical cable. This new type of optical cable needs to be innovatively designed in the connection and disassembly structure of the protective layer to realize convenient, efficient and clean disassembly operation. At the same time, the structure needs to be improved to enhance the lightning protection, flame retardation, heat insulation and damage prevention and gnawing prevention performance of the optical cable. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a lightning protection, flame-retardant, heat-insulating novel layer-twisted OPGW composite optical cable, solve the problem of insufficient strength and stability of OPGW composite optical cable in relevant technology.

[0005] The technical scheme of the utility model is as follows:

[0006] A lightning protection, flame-retardant, heat-insulating novel layer-twisted OPGW composite optical cable comprises:

[0007] Cable core, the cable core is several, several cable cores are wound into a bundle;

[0008] First protective layer, the first protective layer is wound on the outer surface of several cable cores;

[0009] A second protective layer is arranged on the outer surface of the first protective layer, the first protective layer is made of flexible material, and the second protective layer is made of rigid material.

[0010] As a further technical solution, it further comprises:

[0011] A third protective layer is wound on the outer surface of the second protective layer, and the third protective layer is made of rigid material.

[0012] As a further technical solution, it further comprises:

[0013] A reinforcing core, and a plurality of cable cores are wound on the reinforcing core.

[0014] As a further technical solution, the second protective layer is made of magnesium alloy material, and the third protective layer is made of aluminum-coated steel wire material.

[0015] As a further technical solution, the second protective layer has a splicing joint and a splicing groove, the splicing joint penetrates the splicing groove, and the technical solution further comprises:

[0016] A splicing block is arranged in the splicing groove and used for closing the splicing joint.

[0017] As a further technical solution, the length direction shape of the splicing groove is U-shaped, and the splicing block is also U-shaped.

[0018] As a further technical solution, it further comprises:

[0019] An auxiliary sliding member is slidingly arranged on the splicing block, the sliding direction is along the axial direction of the second protective layer, the surface of the auxiliary sliding member has a spiral positioning groove, and the spiral positioning groove is used for accommodating the third protective layer.

[0020] As a further technical solution, the splicing block also has a guide groove, the direction of the guide groove is along the axial direction of the second protective layer, the auxiliary sliding member has a sliding part, and the sliding part is slidingly arranged in the guide groove.

[0021] As a further technical solution, it further comprises:

[0022] A first elastic member acts on the inner wall of the guide groove at one end and acts on the sliding part at the other end, and provides a sliding force of the sliding part on the inner wall of the guide groove.

[0023] As a further technical solution, the surface of the auxiliary sliding member also has a stop edge part, and the stop edge part is located on the side of the spiral positioning groove close to the first elastic member.

[0024] The working principle and beneficial effects of the utility model are as follows:

[0025] In the utility model, a plurality of cable cores are wound to form a bundle to form a cable core part. In the development and application environment of the device, the design is usually a core-based bundled cable, the first protective layer is made of flexible material, such as flexible material with added aluminum oxide, and is tightly wound on the outer surface of the bundled cable core. The second protective layer is made of rigid material, such as aluminum alloy or stainless steel, and is belt-wound on the outer surface of the first protective layer. The cable cores are wound in a bundle, improving the stability and compactness of the internal structure of the optical cable and reducing the looseness and displacement of the internal cables. The flexible material of the first protective layer can provide good buffering and protection, absorb external impact and vibration, and protect the internal cable core from mechanical damage. The rigid material of the second protective layer provides a solid shell for the optical cable, enhances the compression and bending resistance of the optical cable, and helps resist external scratches and wear. The combination of the flexible first protective layer and the rigid second protective layer ensures the flexibility of the optical cable for easy installation and wiring, and improves the overall protection performance and durability. This layered protection structure design effectively improves the lightning protection, flame resistance and heat insulation performance of the optical cable, prolongs the service life of the optical cable and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above-mentioned features, technical characteristics, advantages and implementation methods of the utility model will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0027] Figure 1 The utility model structural schematic diagram is shown in the figure.

[0028] Figure 2 The third protective layer internal structure schematic diagram of the utility model is shown in the figure.

[0029] Figure 3 The Figure 2 The A part local amplification structure schematic diagram in the figure.

[0030] In the figure: cable core-1, first protective layer-2, second protective layer-3, splicing joint-301, splicing groove-302, guide groove-601, third protective layer-4, reinforcing core-5, splicing block-6, auxiliary sliding member-7, spiral positioning groove-701, sliding part-702, baffle part-703, first elastic member-8. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0032] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second" and the like are only used for description, and cannot be understood as indicating or implying relative importance.

[0035] Reference Figures 1-3 For the first embodiment of the present application, a new lightning protection, flame retardant and heat insulation layer-stranded OPGW composite optical cable is proposed, which comprises a cable core 1, the cable core 1 is a plurality of, and the plurality of cable cores 1 are wound into a bundle; a first protective layer 2 is wound on the outer surface of the plurality of cable cores 1; a second protective layer 3 is arranged on the outer surface of the first protective layer 2, the first protective layer 2 is a flexible material, and the second protective layer 3 is a rigid material.

[0036] In this embodiment, a plurality of cable cores 1 are wound into a bundle to form a cable core 1 part. In the practical environment of developing this device, it is usually designed as a 48-core bundled cable. The first protective layer 2 is made of flexible material, such as flexible material with added aluminum oxide, etc., which is tightly wound around the outer surface of the bundled cable core 1. The second protective layer 3 is made of rigid material, such as aluminum alloy or stainless steel, etc., which is belt-wound on the outer surface of the first protective layer 2. The cable core 1 is wound into a bundle, which improves the stability and compactness of the internal structure of the optical cable, and reduces the looseness and displacement of the internal cable. The flexible material of the first protective layer 2 can provide good buffering and protection, absorb external impact and vibration, and protect the internal cable core 1 from mechanical damage. The rigid material of the second protective layer 3 provides a solid shell for the optical cable, enhancing the compression and bending resistance of the optical cable, while helping to resist external scratches and wear. The combination of flexible first protective layer 2 and rigid second protective layer 3 ensures the flexibility of the optical cable for easy installation and wiring, while improving the overall protection performance and durability. This layered protection structure effectively improves the lightning protection, flame resistance and thermal insulation performance of the optical cable, prolongs the service life of the optical cable, and reduces maintenance costs. In addition, the present application winds ointment and the first protective layer on the outer surface of the optical cable to achieve electrical insulation, high temperature resistance, heat insulation, waterproof and other properties. Since the first protective layer is added, the connection and disconnection of the protective layer is more convenient, and the surface of the optical cable is not easy to leave residual adhesive after disconnection, making the subsequent fusion and communication more convenient and stable.

[0037] Further, it further comprises a third protective layer 4, which is wound on the outer surface of the second protective layer 3, and the third protective layer 4 is made of rigid material.

[0038] In this embodiment, a plurality of cable cores 1 are wound into a bundle, the first protective layer 2 is made of flexible material and wound on the outer surface of the cable core 1, the second protective layer 3 is made of rigid material and arranged outside the first protective layer 2, and the third protective layer 4 is also made of rigid material and wound outside the second protective layer 3. The design of the three-layer protective layer further enhances the protection effect of the internal cable core 1, greatly improving the durability and reliability of the optical cable. The rigid material of the third protective layer 4 increases the overall strength and hardness of the optical cable, so that it can better resist the strong pressure and impact from the outside world. The continuous rigid protective layers of the second protective layer 3 and the third protective layer 4 help to improve the lightning protection performance of the optical cable, reducing the damage of lightning to the internal cable core 1. The arrangement of multiple layers of rigid material enhances the flame resistance and thermal insulation effect of the optical cable, which can effectively delay the spread of fire in the event of accidents such as fire, and protect the normal work of the internal cable core 1. This multi-layer protection structure provides a strong guarantee for the stable operation of the optical cable in complex and harsh environments, reducing the probability of failure.

[0039] Further, it further comprises a reinforcing core 5, and a plurality of cable cores 1 are wound on the reinforcing core 5.

[0040] In this embodiment, the reinforcing core 5 is located at the center, and the cable cores 1 are tightly wound around the reinforcing core 5. The centrally located reinforcing core 5 provides core support for the entire optical cable, enhancing the tensile strength of the optical cable and effectively preventing the optical cable from breaking during the stretching process. The cable cores 1 are wound around the reinforcing core 5, making the internal structure of the optical cable more stable, and when subjected to external forces, it can maintain good form and performance. This structure helps to improve the installation and laying efficiency of the optical cable, reduces the construction difficulty, especially in long-distance and complex environment wiring operations. The mechanical properties of the optical cable are strengthened, making it suitable for more severe working conditions and environments, improving the reliability and service life of the optical cable.

[0041] Further, the second protective layer 3 is made of magnesium alloy material, and the third protective layer 4 is made of aluminum-coated steel wire material.

[0042] In this embodiment, the second protective layer 3 is made of magnesium alloy material, which has light weight, high strength and good corrosion resistance, while providing effective protection and reducing the overall weight of the optical cable. The good thermal conductivity of magnesium alloy helps to improve the heat dissipation effect of the optical cable, further enhancing the heat insulation performance. The third protective layer 4 is made of aluminum-coated steel wire material, which has excellent tensile strength and wear resistance, providing strong external protection for the optical cable. Aluminum-coated steel wire can effectively block external electromagnetic interference, ensuring the communication quality of the optical cable. This specific combination of materials not only meets the lightning protection, flame retardation, and heat insulation requirements of the optical cable, but also optimizes the performance and quality of the optical cable, reducing costs.

[0043] Further, the second protective layer 3 has a splicing seam 301 and a splicing groove 302, the splicing seam 301 penetrates the splicing groove 302, and further includes a splicing block 6, the splicing block 6 is arranged in the splicing groove 302, and is used for closing the splicing seam 301.

[0044] In this embodiment, the second protective layer 3 is pre-processed with half of the splicing groove 302 at both ends during its manufacturing process. When performing the wrapping operation, the second protective layer 3 is wrapped around the outer surface of the first protective layer 2, at which time the half splicing grooves 302 at both ends are aligned with each other to form a complete splicing groove 302, and the original splicing seam 301 is also closed. The splicing block 6 is placed in the splicing groove 302 and tightly fits the splicing groove 302. The shape and size of the splicing block 6 are adapted to the splicing groove 302 to ensure that the splicing seam 301 can be firmly closed and the integrity and sealing of the second protective layer 3 are maintained. This design of pre-opening half splicing groove 302 makes the wrapping operation more convenient and efficient, improving the production efficiency. The complete splicing groove 302 and the closed splicing seam 301 can effectively prevent external moisture, dust and other harmful substances from entering, providing reliable protection for the internal cable core 1. The tight fit of the splicing block 6 and the splicing groove 302 ensures the structural strength and stability of the second protective layer 3, so that it is not easy to deform or damage during use. The convenient splicing structure is conducive to the later maintenance and repair work, reducing the operation difficulty and cost.

[0045] Further, the length direction shape of the splicing groove 302 is U-shaped, and the splicing block 6 is also U-shaped.

[0046] In this embodiment, the U-shaped splicing groove 302 and the splicing block 6 design increase the contact area of the two, improve the stability and sealing of splicing. The U-shaped structure makes it easier for the splicing block 6 to be inserted into the splicing groove 302, and the installation operation is more convenient and efficient. When stressed, the U-shaped structure can better disperse stress, enhance the strength of the splicing part, and improve the overall durability of the second protective layer 3.

[0047] Further, it further includes an auxiliary sliding member 7, which is slidingly arranged on the splicing block 6, and the sliding direction is along the axial direction of the second protective layer 3. The surface of the auxiliary sliding member 7 has a spiral positioning groove 701 for accommodating the third protective layer 4.

[0048] In this embodiment, an auxiliary sliding member 7 is slidably arranged on the splice block 6, and the sliding direction of the auxiliary sliding member 7 is along the axial direction of the second protective layer 3. The surface of the auxiliary sliding member 7 has a spiral positioning groove 701, and the third protective layer 4 can be accommodated in the spiral positioning groove 701. The arrangement of the auxiliary sliding member 7 can provide guiding and positioning functions when the third protective layer 4 is installed, so that the winding of the third protective layer 4 is more orderly and compact, and the installation efficiency and quality are improved. The spiral positioning groove 701 can limit the position of the third protective layer 4, prevent it from shifting or loosening during use, and ensure the stability of the optical cable structure. The sliding function of the auxiliary sliding member 7 makes it possible to flexibly adjust the position during the installation or disassembly of the splice block 6, so that the third protective layer 4 is more tightly wound outside the second protective layer 3, which is convenient for operation and does not affect the arrangement of the third protective layer 4. It helps to enhance the overall protection performance of the optical cable and ensure that the third protective layer 4 can effectively play its functions of lightning protection, flame retardation, heat insulation, etc.

[0049] Further, the splice block 6 also has a guide groove 601, and the direction of the guide groove 601 is along the axial direction of the second protective layer 3. The auxiliary sliding member 7 has a sliding part 702, and the sliding part 702 is slidably arranged in the guide groove 601.

[0050] In this embodiment, the splice block 6 is provided with a guide groove 601 extending along the axial direction of the second protective layer 3, and the sliding part 702 on the auxiliary sliding member 7 is precisely fitted in the guide groove 601. The sizes of the guide groove 601 and the sliding part 702 are matched with each other, so that the sliding part 702 can smoothly slide in the guide groove 601. The cooperation of the guide groove 601 and the sliding part 702 ensures that the auxiliary sliding member 7 slides along the predetermined axial path, avoids deviation and instability during sliding, and helps to maintain the consistency and regularity of the optical cable structure. This precise guiding structure makes the movement of the auxiliary sliding member 7 more stable and reliable, reduces the structural problems and performance influences caused by poor sliding, provides clear guidance for installation and maintenance operations, and enables the operator to more accurately and efficiently adjust the position of the auxiliary sliding member 7, thereby optimizing the winding effect of the third protective layer 4. The integrity and stability of the optical cable structure are enhanced, and it can better resist external interference in complex use environment, ensuring the normal operation of the optical cable.

[0051] Further, a first elastic member 8 is also included, one end of the first elastic member 8 acts on the inner wall of the guide groove 601, and the other end acts on the sliding part 702, providing the sliding force of the sliding part 702 on the inner wall of the guide groove 601.

[0052] In the guiding groove 601 of the splicing block 6, a first elastic member 8 is arranged in the embodiment. One end of the first elastic member 8 is in contact with the inner wall of the guiding groove 601, and the other end is in contact with the sliding part 702 of the auxiliary sliding member 7. The first elastic member 8 provides a continuous force for the sliding part 702, so that it can maintain a certain sliding trend in the guiding groove 601, thereby automatically adapting to the stretching and deformation of the optical cable during use, and enhancing the adaptability of the structure. It helps to reduce the influence of external vibration and impact on the connection between the auxiliary sliding member 7 and the splicing block 6, improves the stability and reliability of the connection, and ensures the close fit of the auxiliary sliding member 7 in the guiding groove 601, reduces looseness and gap, and improves the integrity and sealing of the optical cable structure. The existence of the first elastic member 8 can buffer the impact force of the sliding part 702 during sliding, prolonging the service life of the auxiliary sliding member 7 and the splicing block 6.

[0053] Further, the surface of the auxiliary sliding member 7 also has a stop portion 703, which is located on the side of the spiral positioning groove 701 close to the first elastic member 8.

[0054] In the embodiment, the stop portion 703 can prevent the third protective layer 4 from being pulled out from the side of the spiral positioning groove 701 close to the first elastic member 8, ensuring the stable positioning of the third protective layer 4 in the spiral positioning groove 701. The limiting effect on the third protective layer 4 is enhanced, so that it is not easy to displace and loosen during use of the optical cable, and the stability of the optical cable structure is improved.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A novel lightning protection, flame-retardant, heat-insulating layer-stranded OPGW composite optical cable, characterized in that, It includes: Cable core (1), the cable core (1) is several, several cable core (1) is wound into a bundle; First protective layer (2), the first protective layer (2) is wound on the outer surface of several cable core (1); Second protective layer (3), the second protective layer (3) is arranged on the outer surface of the first protective layer (2), the first protective layer (2) is a flexible material, and the second protective layer (3) is a rigid material.

2. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 1, characterized in that, It also includes: Third protective layer (4), the third protective layer (4) is wound on the outer surface of the second protective layer (3), and the third protective layer (4) is a rigid material.

3. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 1, characterized in that, It also includes: Reinforcing core (5), several cable core (1) is wound on the reinforcing core (5).

4. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 2, characterized in that, The second protective layer (3) is made of magnesium alloy material, and the third protective layer (4) is made of aluminum coated steel wire material.

5. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 2, characterized in that, The second protective layer (3) has a splicing seam (301) and a splicing groove (302), the splicing seam (301) penetrates the splicing groove (302), and the splicing groove (302) further includes: Splicing block (6), the splicing block (6) is arranged in the splicing groove (302), and is used for closing the splicing seam (301).

6. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 5, characterized in that, The length direction shape of the splicing groove (302) is U-shaped, and the splicing block (6) is also U-shaped.

7. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 5, characterized in that, It also includes: Auxiliary sliding member (7), the auxiliary sliding member (7) is slidably arranged on the splicing block (6), and the sliding direction is along the axial direction of the second protective layer (3), the surface of the auxiliary sliding member (7) has a spiral positioning groove (701), and the spiral positioning groove (701) is used for accommodating the third protective layer (4).

8. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 7, characterized in that, The splicing block (6) further has a guide groove (601), the direction of the guide groove (601) is along the axial direction of the second protective layer (3), the auxiliary sliding member (7) has a sliding part (702), and the sliding part (702) is slidably arranged in the guide groove (601).

9. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 8, characterized in that, It also includes: First elastic member (8), one end of the first elastic member (8) acts on the inner wall of the guide groove (601), the other end acts on the sliding part (702), and the first elastic member (8) provides the sliding force of the sliding part (702) on the inner wall of the guide groove (601).

10. The lightning protection, flame-retardant, and heat-insulating novel layer-stranded OPGW composite optical cable according to claim 9, characterized in that, The surface of the auxiliary sliding member (7) further has a stop edge part (703), and the stop edge part (703) is located on one side of the spiral positioning groove (701) close to the first elastic member (8).

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