Special sheath packaging armored optical cable

Abstract

The utility model relates to the technical field of optical cables, and discloses a special sheath packaging armored optical cable, which comprises an optical fiber, the outer side of the optical fiber is sleeved with a sheath plastic, the sheath plastic is filled with a water-blocking ointment material, the outer side of the sheath plastic is sleeved with a non-metal yarn, the outer side of the non-metal yarn is sleeved with an inner sheath, the outer side of the inner sheath is sleeved with a non-metal piece, and the outer side of the non-metal piece is sleeved with an outer sheath. The outer side of the non-metal part is sleeved with a water-blocking tape, the outer side of the water-blocking tape is sleeved with a metal part, and the outer side of the metal part is sleeved with an outer sheath. The threaded outer sheath effectively disperses external pressure through a corrugated structure, so that the lateral pressure resistance of the optical cable is remarkably improved, the design of the threaded structure not only can disperse the pressure, but also can buffer external impact force, and the non-metal part can provide higher tensile capacity, so that the optical cable can keep the structure complete when being subjected to tensile force, and the optical cable is prevented from being damaged. The outer layer further enhances the anti-pressure capability of the optical cable and improves the durability of the optical cable, and the non-metal part has the characteristics of light weight and high strength, so that the weight of the optical cable can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of optical cable technology, specifically a special sheath-encapsulated armored optical cable. Background Technology

[0002] With the rapid development of internet technology, the demand for data transmission is increasing daily, placing higher demands on the performance and stability of communication lines. Traditional copper wires and ordinary optical fibers can no longer meet the needs of modern communication in terms of transmission rate and stability. At the same time, harsh natural environments and human factors also pose serious threats to the security of communication lines. Against this backdrop, armored optical cables have emerged and quickly become an important part of the communications industry.

[0003] Armored optical cables are specially designed optical fibers, consisting of one or more optical fibers at their core, surrounded by one or more layers of protective material using sheathing technology. The sheath, a crucial component of armored optical cables, protects the cable from solvents and abrasion. Typically, the sheath is made of plastic, such as polyethylene, providing the basic protective layer. The armor, located between the sheath and the inner sheath, is usually made of materials that are difficult to cut, bite, and burn, such as steel tape and aluminum foil. The armor not only enhances the mechanical strength of the optical cable, enabling it to resist external pressure, tension, and rodent bites, but also improves the cable's durability and stability in harsh environments.

[0004] In traditional optical cable structures, especially in applications requiring high voltage, lateral pressure, and impact resistance, such as riverbeds and seabeds, the design of the cable's protective layer faces numerous challenges. While traditional steel tape armor provides some resistance to pressure and lateral pressure, its performance often falls short of the high requirements of extreme environments. Furthermore, when subjected to external impacts such as rock crushing or construction trampling, the internal optical fibers are prone to damage due to stress concentration, affecting the cable's transmission performance. In addition, traditional optical cables, in pursuing high strength and pressure resistance, often neglect weight control, resulting in a large overall cable weight that is inconvenient for transportation and installation. Therefore, those skilled in the art have provided a specially sheathed armored optical cable to address the problems mentioned in the background. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a specially sheathed armored optical cable. While traditional steel tape armor provides a certain degree of resistance to pressure and lateral pressure, its performance often fails to meet the high requirements of extreme environments. Furthermore, when subjected to external impacts such as rock compression or trampling during construction, the internal optical fibers are easily damaged due to stress concentration, affecting the transmission performance of the optical cable. In addition, while pursuing high strength and pressure resistance, traditional optical cables often neglect weight control, resulting in a large overall weight that is inconvenient for transportation and installation.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a special sheath-encapsulated armored optical cable, comprising an optical fiber, the outer side of which is covered with a plastic sheath, the plastic sheath being filled with water-blocking grease, the outer side of which is covered with non-metallic yarn, the outer side of which is covered with an inner sheath, the outer side of which is covered with a non-metallic component, the outer side of which is covered with a water-blocking tape, the outer side of which is covered with a metal component, and the outer side of which is covered with an outer sheath.

[0009] Preferably, the outer sheath has a spirally rising outer wall, the metal parts are galvanized steel wire, the non-metal parts are made of FRP, the inner sheath material is PP polypropylene copolymer, the water-blocking grease is a high-temperature hydrogen evolution grease, the non-metallic yarn is made of Kevlar fiber aramid yarn, the plastic sheath is made of PBT material, and the optical fiber is a single-mode or multi-mode optical fiber.

[0010] (III) Beneficial Effects

[0011] Compared with the prior art, this utility model provides a special sheath-encapsulated armored optical cable, which has the following beneficial effects:

[0012] Through design, the specially sheathed armored optical cable in this utility model consists of an outer sheath, metal components, water-blocking tape, non-metallic components, an inner sheath, non-metallic yarn, plastic sheath, water-blocking grease, and optical fibers. The spiral outer sheath effectively disperses external pressure through its corrugated structure, significantly improving the cable's resistance to lateral pressure. This gives the cable greater adaptability in high-pressure environments such as riverbeds and seabeds. Furthermore, the spiral structure not only disperses pressure but also buffers external impacts such as rock crushing and construction trampling, reducing stress concentration in the internal optical fibers and protecting them from damage. When damaged, non-metallic components provide higher tensile strength, enabling the optical cable to maintain its structural integrity under tensile force and preventing breakage. This improves the tensile performance and reliability of the optical cable. The outer layer further enhances the compressive strength of the optical cable, allowing it to remain stable under high pressure and preventing deformation or damage, thus improving its durability. Non-metallic components are lightweight and high-strength, effectively reducing the weight of the optical cable while maintaining its overall performance. This achieves a balance between lightweight and high performance, making the optical cable more convenient to transport, install, and use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a special sheath-encapsulated armored optical cable provided in an embodiment of this application.

[0014] In the diagram: 1. Outer sheath; 2. Metal parts; 3. Water-blocking tape; 4. Non-metallic parts; 5. Inner sheath; 6. Non-metallic yarn; 7. Plastic sheath; 8. Water-blocking grease; 9. Optical fiber. 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] This utility model provides a technical solution: a specially sheathed armored optical cable. Please refer to [link / reference]. Figure 1 The optical fiber 9 is covered with a plastic sleeve 7, which is filled with water-blocking grease 8. The plastic sleeve 7 is covered with a non-metallic yarn 6, which is covered with an inner sheath 5. The inner sheath 5 is covered with a non-metallic part 4, which is covered with a water-blocking tape 3. The water-blocking tape 3 is covered with a metal part 2, and the metal part 2 is covered with an outer sheath 1.

[0017] The outer sheath 1 has a spiral-shaped outer wall, the metal part 2 is made of galvanized steel wire, the non-metal part 4 is made of FRP, the inner sheath 5 is made of PP polypropylene copolymer, the water-blocking grease 8 is a high-temperature hydrogen evolution grease, the non-metallic yarn 6 is made of Kevlar fiber aramid yarn, the plastic sheath 7 is made of PBT material, and the optical fiber 9 is a single-mode or multi-mode optical fiber.

[0018] The special sheath-encapsulated armored optical cable in this utility model consists of an outer sheath, a metal component 2, a water-blocking tape 3, a non-metallic component 4, an inner sheath 5, a non-metallic yarn 6, a plastic sheath 7, a water-blocking grease 8, and an optical fiber 9. The optical fiber 9 is a single-mode or multi-mode optical fiber, the plastic sheath 7 is made of PBT material, the non-metallic yarn 6 is made of Kevlar fiber aramid yarn, the water-blocking grease 8 is a high-temperature hydrogen evolution grease, the inner sheath 5 is made of PP polypropylene copolymer, the non-metallic component 4 is made of FRP, the metal component 2 is galvanized steel wire, and the outer sheath 1 is made of PP polypropylene copolymer with a spiral-shaped outer surface.

[0019] The optical fiber 9 is placed in the sheath 7, and the sheath 7 is filled with a sufficient amount of water-blocking grease 8. Multiple non-metallic yarns 6 are twisted on the outside of the sheath 7. The inner sheath 5 wraps the non-metallic yarns 6. On the outside of the inner sheath 5, there is a double layer of sheathing, which is distributed in a stepped shape. The inner layer is non-metallic part 4, and the outer layer is metallic part 2. At the same time, there is a water-blocking tape 3 between the inner and outer layers. The water-blocking tape 3 wraps the non-metallic part 4. Finally, the outer sheath 1 wraps the metallic part 2.

[0020] In this structure, the spiral outer sheath 1 disperses external pressure through a corrugated structure. Combined with the high rigidity of the seamless steel strip, the lateral pressure resistance can be increased to ≥3000N / 100mm, which is more than twice that of traditional steel strip armor. It is suitable for high-pressure scenarios such as riverbeds and seabeds. The spiral structure can also buffer the impact of rock compression and construction trampling, and reduce the stress concentration of the optical fiber 9 inside the optical cable. The non-metallic yarn 6 uses Kevlar fiber, which can provide a tensile strength of more than 1500N. The metal part 2 uses high-density galvanized steel wire to improve the compressive strength. The non-metallic part 4 uses FRP to reduce weight and balance performance.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] 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 special-jacketed, enclosed-armor optical fiber cable comprising optical fibers (9), characterized in that: The outer side of the optical fiber (9) is sleeved with a plastic sleeve (7), the plastic sleeve (7) is filled with a water-blocking grease (8), the outer side of the plastic sleeve (7) is sleeved with a non-metal yarn (6), the outer side of the non-metal yarn (6) is sleeved with an inner sheath (5), the outer side of the inner sheath (5) is sleeved with a non-metal part (4), the outer side of the non-metal part (4) is sleeved with a water-blocking tape (3), the outer side of the water-blocking tape (3) is sleeved with a metal part (2), and the outer side of the metal part (2) is sleeved with an outer sheath (1).

2. A special jacketed enclosure cable as claimed in claim 1, wherein: The outer wall of the outer sheath (1) is in a thread-up shape.

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