High-performance bidirectional spiral tube-penetrating optical cable

Abstract

The utility model relates to the technical field of optical fiber cables, in particular to a high-performance bidirectional spiral tube-penetrating optical cable, which comprises a plurality of optical signal transmission elements, a double-layer high-strength protection inner sheath, a tensile element and a double-helix outer sheath, the double-layer high-strength protection inner sheath is extruded on the periphery of the optical signal transmission elements, and the tensile element is extruded on the periphery of the double-helix outer sheath. The periphery of the double-layer high-strength protection inner sheath is provided with a tensile element, the periphery of the tensile element is coated with a double-helix outer sheath, the double-helix outer sheath is arranged in a double-helix mode, the outer surface of the double-helix outer sheath is provided with a forward-direction thread groove and a reverse-direction thread groove, and the forward-direction thread groove and the reverse-direction thread groove are both in a spiral shape; according to the utility model, the optical cable laying efficiency and the working efficiency of constructors are remarkably improved, breakthrough progress is made in the aspects of miniaturization, high speed and flexibility, the requirements of optical cable laying under complex terrain conditions are effectively met, and the optical cable laying device is suitable for pipeline laying scenes in cities, towns and cities to towns.

Description

[Technical Field]

[0001] This utility model relates to the field of optical fiber and cable technology, specifically a high-performance bidirectional spiral tube optical cable. [Background Technology]

[0002] Pipe fiber optic cable is an outdoor optical cable used in access networks or customer premises networks. Currently, pipe-based fiber optic cable technology has many advantages, but it also faces some challenges in practical applications.

[0003] The installation method for conduit-type round cables relies on manual pushing, severely limiting the laying distance. Not only is the laying process demanding but also inefficient. Furthermore, the high-intensity pushing process often subjects the cable to excessive stress, damaging internal components. This is particularly problematic in conduit-based home installations, where the route includes numerous bends. Given the inherent rigidity of conduit-type cables, brittle components at bends are highly susceptible to breakage.

[0004] As customers demand increased insertion lengths, single-threaded optical cable designs only help mitigate bending losses during installation. For long-distance installations, the limited unidirectional insertion can lead to torsional stress on the cable. Once the accumulated torsional stress exceeds its tolerance limit, the cable will break at the stress peak point. Therefore, the maximum allowable stress of a single-threaded optical cable structure is insufficient to meet customers' long-distance requirements, necessitating the development of new structures to enhance the cable's torsional stress resistance.

[0005] These problems not only increase construction difficulty and cost, but also seriously affect the transmission performance and lifespan of optical cables. Therefore, the traditional method of laying optical cables in conduits urgently needs to be improved to meet the demands of modern communication networks for high efficiency, stability, and security. [Utility Model Content]

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a high-performance bidirectional spiral conduit optical cable, which significantly improves the efficiency of optical cable laying and the work efficiency of construction personnel, effectively meeting the needs of optical cable laying under complex terrain conditions.

[0007] To achieve the above objectives, a high-performance bidirectional spiral conduit optical cable is designed, comprising an optical signal transmission element 1, a double-layer high-strength protective inner sheath 2, a tensile element 3, and a double-spiral outer sheath 4. Multiple optical signal transmission elements 1 are provided. The outer periphery of each optical signal transmission element 1 is encased in a double-layer high-strength protective inner sheath 2. The outer periphery of the double-layer high-strength protective inner sheath 2 is provided with a tensile element 3. The outer periphery of the tensile element 3 is covered by a double-spiral outer sheath 4, which is arranged in a double spiral configuration.

[0008] Furthermore, the outer surface of the double-helix outer sheath 4 is provided with a positive thread groove 4-1 and a negative thread groove 4-2. Both the positive thread groove 4-1 and the negative thread groove 4-2 are helical. This design further facilitates quick manual peeling, simplifies the splicing process, and perfectly adapts to high-speed rotating laying devices, thereby improving construction efficiency.

[0009] Furthermore, the double helix outer sheath 4 adopts a segmented structure. The double helix outer sheath 4 is a segmented double helix outer sheath. This segmented structure, combined with the design of forward and reverse thread grooves, not only greatly enhances the flexibility and toughness of the optical cable, but also significantly reduces bending energy consumption during the laying process.

[0010] Furthermore, the double-helix outer sheath 4 is a high-density polyethylene material layer, the surface hardness of which is greater than 60 on the Shore A hardness scale, thus possessing good heat resistance, UV resistance, and environmental friendliness.

[0011] Furthermore, each optical signal transmission element 1 is composed of an optical fiber ribbon, a sheath, aramid yarn, and an inner protective layer, thereby ensuring efficient and stable information transmission.

[0012] Furthermore, the double-layer high-strength protective inner sheath 2 adopts a double-layer design, which provides an indestructible protective barrier for the optical cable core and can effectively resist the harsh challenges of the external environment.

[0013] Furthermore, the tensile element 3 is a sheath made of aramid material. By tightly wrapping the tensile element 3 around the outer periphery of the double-layer high-strength protective inner sheath 2, the tensile performance of the optical cable is further guaranteed.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] (1) This utility model achieves a significant improvement in the flexibility and adaptability of optical cables through a segmented double-helix outer sheath design, while greatly reducing bending energy consumption during the laying process.

[0016] (2) Compared with traditional round cables, the cross-sectional area and weight of this utility model are reduced by more than 50%, which not only effectively controls the cost, but also significantly improves the miniaturization, high speed and laying flexibility of optical cables.

[0017] (3) The spiral outer sheath of this utility model is designed to facilitate quick manual peeling, simplify the continuous operation process, and perfectly adapt to high-speed rotating laying device, thereby improving construction efficiency.

[0018] (4) The bidirectional spiral design of the outer sheath of this utility model gives the optical cable the flexibility of multi-directional rotation during pipe laying, effectively avoiding the common problems of single-thread optical cables.

[0019] (5) Even during long-distance laying, the optical cable will not accumulate torsional stress, which can meet the requirements of long-length and high-difficulty construction. This laying method not only improves the laying efficiency, but also ensures the stability and transmission performance of the optical cable, providing strong support for the efficient, stable and safe construction of modern communication networks.

[0020] (6) This utility model has made significant breakthroughs in transmission efficiency, structural strength, laying flexibility and weather resistance, providing strong technical support for the construction and upgrading of modern communication networks;

[0021] In summary, this utility model significantly improves the efficiency of optical cable laying and the work efficiency of construction personnel compared with the prior art. It has made breakthrough progress in miniaturization, high speed and flexibility, effectively meeting the needs of optical cable laying under complex terrain conditions, and is suitable for urban, rural and urban-to-rural pipeline laying scenarios. [Image Description]

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a top view of the structure of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the double-helix outer sheath of this utility model;

[0025] Figure 4 This is a side view of the double-helix outer sheath of this utility model.

[0026] In the figure: 1. Optical signal transmission element; 2. Double-layer high-strength protective inner sheath; 3. Tensile element; 4. Double-helix outer sheath; 4-1. Positive direction thread groove; 4-2. Reverse direction thread groove. [Detailed Implementation]

[0027] As attached Figure 1 To be continued Figure 4 As shown, this utility model provides a high-performance bidirectional spiral tube-insulated optical cable, including an optical signal transmission element 1, a double-layer high-strength protective inner sheath 2, a tensile element 3, and a double-spiral outer sheath 4. Multiple optical signal transmission elements 1 are provided. The outer periphery of the optical signal transmission element 1 is covered with a double-layer high-strength protective inner sheath 2. The outer periphery of the double-layer high-strength protective inner sheath 2 is provided with a tensile element 3. The outer periphery of the tensile element 3 is covered with a double-spiral outer sheath 4, which is arranged in a double spiral.

[0028] Each optical signal transmission element 1 consists of an optical fiber ribbon, a sheath, aramid yarn, and an inner sheath, ensuring efficient and stable information transmission. The double-layer high-strength protective inner sheath 2 adopts a double-layer design, providing an indestructible protective barrier for the optical cable core and effectively resisting the harsh challenges of the external environment. The tensile element 3 is a sheath made of aramid material. By tightly wrapping the double-layer high-strength protective inner sheath 2 with this tensile element 3, the tensile performance of the optical cable is further guaranteed.

[0029] The outer surface of the double-helix outer sheath 4 is provided with a forward threaded groove 4-1 and a reverse threaded groove 4-2. Both the forward threaded groove 4-1 and the reverse threaded groove 4-2 are spiral in shape. This design further facilitates quick manual stripping, simplifies the splicing process, and perfectly adapts to high-speed rotating laying devices, improving construction efficiency. The double-helix outer sheath 4 adopts a segmented structure. The segmented structure, combined with the forward and reverse threaded groove design, not only greatly enhances the flexibility and toughness of the optical cable, but also significantly reduces bending energy consumption during the laying process. The double-helix outer sheath 4 is made of high-density polyethylene material layer. The surface hardness of this high-density polyethylene material layer is greater than 60 on the Shore A hardness scale, thus possessing good heat resistance, UV resistance, and environmental friendliness.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] A high-performance bidirectional spiral tube-insulated optical cable mainly includes an optical signal transmission element 1, a double-layer high-strength inner sheath 2, a tensile element 3, and a double spiral outer sheath 4, wherein the double spiral outer sheath 4 is provided with a positive thread groove 4-1 and a negative thread groove 4-2.

[0032] The double-helix outer sheath adopts a thermal structure design. The bidirectional spiral outer sheath generates mutual repulsion forces when exposed to high and low temperatures, thus inhibiting cable retraction. This results in superior weather resistance and environmental performance for this bidirectional spiral duct-mounted optical cable. The spiral shape of the outer sheath facilitates manual stripping without the need for special stripping tools. Stripping is completed simply by pulling the cable sheath in the opposite direction from the groove, simplifying stripping, splicing, and other connection operations. The spiral outer sheath can be used with high-speed rotating laying devices to achieve embedded duct laying, with a laying speed far exceeding that of traditional manual push-type laying methods. The bidirectional spiral design of the outer sheath allows for multiple directions to be selected during rotating embedded laying in ducts, and the direction can be changed as needed during construction. Compared to single-threaded optical cables, which can only rotate in one direction, the cumulative torsional stress can cause the cable to bend in the duct, resulting in problems such as the inability to continue advancing the cable and damage to cable components. The double-helix outer sheath adopts a segmented structure, which significantly enhances the toughness and flexibility of the optical cable and effectively reduces the energy loss caused by bending and friction with the duct during the laying process. Compared with traditional optical cables, the cross-sectional area and weight of the helical outer sheath are reduced by more than 50%, reducing costs while improving the performance of the optical cable, and significantly improving miniaturization, high speed and laying flexibility.

[0033] This invention achieves a significant improvement in the flexibility and adaptability of optical cables through a segmented double-helix outer sheath design, while substantially reducing bending energy consumption during laying. Compared to traditional round cables, its cross-sectional area and weight are reduced by more than 50%, effectively controlling costs and significantly improving the miniaturization, high speed, and laying flexibility of the optical cable. Furthermore, the helical outer sheath design facilitates quick manual stripping, simplifying splicing procedures and perfectly adapting to high-speed rotating laying devices, thus improving construction efficiency. More importantly, the bidirectional helical design of the outer sheath provides multi-directional rotating laying flexibility during conduit installation, effectively avoiding common problems with single-threaded optical cables. Combined with a thermally robust design offering excellent weather resistance, this optical cable exhibits superior environmental adaptability and performance stability under various climatic conditions, providing strong technical support for the construction and upgrading of modern communication networks.

[0034] Traditional methods of installing round cables in conduits rely on manual pushing to provide the driving force. Compared to traditional fiber optic cable installation, this single and high-intensity pushing method is not only inefficient but also easily subjectes the cable to direct compressive force within the conduit, especially at bends. Uneven stress can easily cause deformation of the cable and even damage to internal components. In contrast, this invention allows for rotational embedding installation using fittings (see appendix). Figure 4Before laying, the fittings only need to be connected to and fixed at the entrance of the duct to be laid. During the laying process, the cable is rotated and embedded according to a fixed frequency, similar to an SZ twisted cable. Compared with single-spiral optical cables, this invention prevents the accumulation of torsional stress in the optical cable even during long-distance laying, meeting the requirements of long-length and high-difficulty construction. This laying method not only improves laying efficiency but also ensures the stability and transmission performance of the optical cable, providing strong support for the efficient, stable, and secure construction of modern communication networks. It is evident that this invention significantly improves the efficiency of optical cable laying compared to existing technologies, achieving breakthroughs in miniaturization, high speed, and flexibility, effectively meeting the needs of optical cable laying under complex terrain conditions.

[0035] Specifically, this utility model has the following core features:

[0036] (1) Integrated optical signal transmission core: The optical cable has built-in improved optical signal transmission components, which can ensure efficient and stable information transmission;

[0037] (2) Double-layer high-strength protective inner liner: The double-layer high-strength protective inner sheath provides an indestructible protective barrier for the optical cable core, effectively resisting the harsh challenges of the external environment;

[0038] (3) Innovative segmented double helix outer sheath: The outer sheath adopts a revolutionary segmented structure, combined with a forward and reverse thread groove design, which not only greatly enhances the flexibility and toughness of the optical cable, but also significantly reduces the bending energy consumption during the laying process, achieving a double leap in laying efficiency and optical cable performance.

[0039] (4) Lightweight and miniaturization breakthrough: Compared with traditional optical cables, the cross-sectional area and weight of the spiral outer sheath of this utility model can be reduced by more than 50%, which effectively controls costs and significantly improves the miniaturization, high speed and laying flexibility of optical cables.

[0040] (5) Convenient splicing design: The spiral outer sheath is cleverly designed to be easy to peel off quickly by hand without the need for special tools. It can be peeled off simply by pulling it back from the groove, which greatly simplifies the splicing process such as welding.

[0041] (6) High-speed rotary laying technology compatibility: The outer sheath design is perfectly adapted to the high-speed rotary laying device, realizing embedded pipe laying. The laying speed is far greater than the traditional manual pushing method, which greatly improves the construction efficiency.

[0042] (7) Multi-directional rotational laying flexibility: The positive and negative two-way spiral design of the outer sheath gives the optical cable a variety of choices for rotational embedding during the construction of the conduit. The direction can be flexibly switched during the construction process, which effectively avoids problems such as bending, obstruction of advancement and damage of components caused by stress accumulation in single-reverse spiral optical cables.

[0043] (8) Excellent weather resistance thermal structure design: The outer sheath adopts an advanced thermal structure design. The bidirectional spiral structure can generate mutual repulsion force when subjected to extreme high and low temperatures, effectively suppressing the optical cable shrinkage and ensuring that the optical cable can exhibit excellent environmental adaptability and performance stability under various climatic conditions.

[0044] In summary, the high-performance bidirectional spiral duct optical cable of this invention has achieved significant breakthroughs in transmission efficiency, structural strength, laying flexibility, and weather resistance, providing strong technical support for the construction and upgrading of modern communication networks, and is worthy of widespread application.

[0045] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0046] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A high performance bidirectional helical tube-able fiber optic cable characterized by: The application relates to a light signal transmission element (1), a double-layer high-strength protection inner sheath (2), a tensile element (3) and a double-helix outer sheath (4), wherein the light signal transmission element (1) is provided with a plurality of light signal transmission elements (1), the light signal transmission element (1) is extruded with the double-layer high-strength protection inner sheath (2), the double-layer high-strength protection inner sheath (2) is provided with the tensile element (3), the tensile element (3) is covered with the double-helix outer sheath (4), and the double-helix outer sheath (4) is provided with double helixes.

2. The high performance bidirectional helical tube cable of claim 1, wherein: The outer surface of the double-helix outer sheath (4) is provided with a positive direction thread groove (4-1) and a reverse direction thread groove (4-2), and the positive direction thread groove (4-1) and the reverse direction thread groove (4-2) are both helical.

3. The high performance bidirectional helical tube cable of claim 1 or 2, wherein: The double-helix outer sheath (4) adopts a sectional structure, and the double-helix outer sheath (4) is a sectional double-helix outer sheath.

4. The high performance bidirectional helical tube cable of claim 3, wherein: The double-helix outer sheath (4) is a high-density polyethylene material layer, and the surface hardness of the high-density polyethylene material layer is greater than Shore hardness 60 degrees.

5. The high-performance bidirectional spiral tube-driven optical cable as described in claim 1, characterized in that: Each light signal transmission element (1) is composed of an optical fiber ribbon, a sleeve, aramid yarn and an inner protective layer.

6. The high-performance bidirectional spiral tube-driven optical cable as described in claim 1, characterized in that: The double-layer high-strength protection inner sheath (2) is a double-layer high-strength protection inner sheath.

7. The high-performance bidirectional spiral tube optical cable as described in claim 1, characterized in that: The tensile element (3) is a sheath made of aramid material.

Images