Photoelectric composite overhead cable
By designing optoelectronic composite overhead cables, combining cable cores and fiber cores, and setting up a multi-layer structure in the structure, the problems of insufficient strength and durability of the existing cable structure are solved, and the dual functions of optical fiber signal transmission and cable transmission are realized, reducing construction costs and steps.
Patent Information
- Application Number
- CN202421554591.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The tensile strength of the conductors of existing overhead cables is reduced, the wire core density is large, the weight is large, and the magnetic loss is large, and there is a problem of low corrosion resistance. The optical cable and cable need to be erected separately, which increases the construction steps and costs.
A photoelectric composite overhead cable was designed. By setting up a cable core and six optical fiber cores, and a partition layer, reinforcement rib, protective layer, cladding, insulating layer and filling layer were provided in the structure to enhance structural strength and high temperature resistance.
The cable has the functions of both optical fiber signal transmission and cable power transmission, which enhances the structural strength and durability of the cable and reduces construction costs and steps.
Smart Images
Figure CN222927222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of overhead power cables, in particular to an optical and electrical composite overhead cable. Background Technique
[0002] An overhead cable refers to a stranded wire composed of a single wire through which current flows or multiple non-insulated stranded wires. With the rapid development of the national economy and the continuous improvement of people's living standards, the demand for electricity has increased sharply. As a carrier for power transmission, overhead transmission cables play an extremely important role in the transmission line. Overhead cables are mainly erected on poles and towers. In addition to bearing their own gravity, they also need to withstand external loads such as wind, snow, and ice.
[0003] Existing overhead cables are mainly used for power transmission. The conductors used are concentrically stranded with pure aluminum round wires. After stranding, the surface of the single wire is deformed, resulting in a decrease in its tensile strength. The wire cores used in overhead cables are generally composed of one or more stranded galvanized steel wires. Such steel cores have a relatively large density and weight, and have relatively large magnetic losses in AC transmission lines. At the same time, galvanized steel cores also have the problem of relatively low corrosion resistance. Therefore, in order to reduce the weight of overhead cables, it is necessary to improve the structure of existing overhead cables. In addition, due to the different linear expansion coefficients and elastic moduli of steel and aluminum, in order to give full play to the comprehensive performance of the cable, it is necessary to optimize the structure or material properties of the cable. A gap is provided between the wire core and the conductor. The existence of the gap is beneficial to the stress transfer of the cable and can avoid the problem of large arcs generated during the erection and operation of the cable.
[0004] A communication optical cable is a communication method using optical fibers as the propagation medium. Communication optical fibers have high requirements for high speed, large capacity, and high confidentiality. At present, after the cable erection in an area is completed, it is necessary to erect the optical cable again, which increases the construction steps and raises the cost. Content of the Utility Model
[0005] The purpose of the utility model is to provide an optical and electrical composite overhead cable, which can solve the problems raised in the above background technique.
[0006] To achieve the above object, the present utility model provides the following technical solution: An optical and electrical composite overhead cable, including a composite overhead cable body, the outside of the composite overhead cable body is a sheath, a first protective layer is arranged inside the sheath, a second protective layer is arranged inside the first protective layer, a first partition layer is arranged inside the second protective layer, a second partition layer is arranged inside the first partition layer, a reinforcing rib and an optical fiber core are arranged between the first partition layer and the second partition layer, a cladding is sleeved outside the optical fiber core, a first filling layer is arranged outside the cladding, a cable core is arranged inside the second partition layer, an insulating layer is sleeved outside the cable core, and a second filling layer is filled between the insulating layer and the second partition layer.
[0007] Preferably, six reinforcing ribs are provided, both ends of the six reinforcing ribs are respectively fixedly arranged on the inner side of the first partition layer and the outer side of the second partition layer, the six reinforcing ribs divide the first partition layer and the second partition layer into six cavities, six optical fiber cores are provided, and the six optical fiber cores are respectively arranged inside the six cavities, and the cladding is filled inside each cavity.
[0008] Preferably, the sheath is a polyvinyl chloride sheath.
[0009] Preferably, the first protective layer and the second protective layer are a cross-linked polyethylene first protective layer and a cross-linked polyethylene second protective layer.
[0010] Preferably, the cladding is a polymethyl methacrylate cladding.
[0011] Preferably, the insulating layer is an ethylene propylene rubber layer insulating layer.
[0012] Preferably, the first filling layer and the second filling layer are a fluoropolymer first filling layer and a fluoropolymer second filling layer.
[0013] Compared with the prior art, the present utility model provides an optical and electrical composite overhead cable, having the following
[0014] beneficial effects:
[0015] 1. By providing a cable core and six optical fiber cores, the cable can simultaneously transmit optical fiber signals and conduct electricity.
[0016] 2. By providing a first partition layer, a reinforcing rib, and a second partition layer, the structure strength of the composite overhead cable body can be enhanced. By providing a first protective layer, a second protective layer, a first filling layer, and a second filling layer, functions such as heat insulation and high temperature resistance can be achieved for the optical fiber core and the cable core, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the three-dimensional structure of the present utility modelFigure 1 ;
[0018] Figure 2 Schematic diagram of the three-dimensional structure of the present utility model Figure 2 ;
[0019] Figure 3 Schematic diagram of the internal structure of the present utility model;
[0020] Figure 4 Schematic diagram of the cross-sectional structure of the present utility model.
[0021] Wherein: 1. Composite overhead cable body; 2. Sheath; 3. First protective layer; 4. Second protective layer; 5. First partition layer; 6. Reinforcing rib; 7. Second partition layer; 8. Optical fiber core; 9. Cladding; 10. First filling layer; 11. Cable core; 12. Insulating layer; 13. Second filling layer. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment 1
[0024] Please refer to Figures 1-4 , in the figure, an optical and electrical composite overhead cable includes a composite overhead cable body 1. The outer side of the composite overhead cable body 1 is a sheath 2. Inside the sheath 2 is provided a first protective layer 3. Inside the first protective layer 3 is provided a second protective layer 4. Inside the second protective layer 4 is provided a first partition layer 5. Inside the first partition layer 5 is provided a second partition layer 7. Between the first partition layer 5 and the second partition layer 7 are provided a reinforcing rib 6 and an optical fiber core 8. The outer side of the optical fiber core 8 is sleeved with a cladding 9. Outside the cladding 9 is provided a first filling layer 10. Inside the second partition layer 7 is provided a cable core 11. The outer side of the cable core 11 is sleeved with an insulating layer 12. Between the insulating layer 12 and the second partition layer 7 is filled with a second filling layer 13.
[0025] Please refer to Figure 2 , six reinforcing ribs 6 are provided. The two ends of the six reinforcing ribs 6 are respectively fixedly provided on the inner side of the first partition layer 5 and the outer side of the second partition layer 7. The six reinforcing ribs 6 divide the first partition layer 5 and the second partition layer 7 into six cavities. Six optical fiber cores 8 are provided. The six optical fiber cores 8 are respectively arranged inside the six cavities. The cladding 9 is filled inside each cavity.
[0026] In this embodiment: The provision of the reinforcing rib 6 can cooperate with the first separation layer 5 and the second separation layer 7 to play a role in strengthening the support, thereby ensuring the structural strength inside the composite overhead cable body 1, and further playing a role in protecting the optical fiber core 8 and the cable core 11.
[0027] Working principle: By providing the cable core 11 and six optical fiber cores 8, the cable can simultaneously transmit optical fiber signals and conduct electricity. Personnel only need to erect the overhead cable once to simultaneously have the functions of optical signal transmission and power transmission; among them, the provision of the reinforcing rib 6 can cooperate with the first separation layer 5 and the second separation layer 7 to play a role in strengthening the support, thereby ensuring the structural strength inside the composite overhead cable body 1, and further playing a role in protecting the optical fiber core 8 and the cable core 11; among them, the sheath 2 is made of polyvinyl chloride, which has good weather resistance and wear resistance and can be well adapted to the external environment; the first protective layer 3 and the second protective layer 4 are made of cross-linked polyethylene, which has good high-temperature resistance and heat insulation performance, and has good mechanical properties, and can well protect the internal wire cores; the cladding 9 is made of polymethyl methacrylate, which has a high refractive index and can effectively improve the transmission performance of the optical fiber core 8; the insulating layer 12 is an ethylene propylene rubber layer, and ethylene propylene rubber has good electrical insulation performance and high-temperature resistance and can protect the internal cable core 11; the first filling layer 10 and the second filling layer 13 are made of fluoropolymer, and fluoropolymer has excellent high-temperature resistance, chemical stability and electrical insulation, and its friction coefficient is low, which can effectively reduce the wear of the cladding 9 and the insulating layer 12, and further improve the service life of the optical fiber core 8 and the cable core 11.
[0028] Embodiment 2
[0029] Please refer to Figure 2 、 Figure 4 , this embodiment further illustrates Embodiment 1. In the figure, the sheath 2 is a polyvinyl chloride sheath.
[0030] In this embodiment: The sheath 2 is made of polyvinyl chloride, which has good weather resistance and wear resistance and can be well adapted to the external environment.
[0031] Please refer to Figure 2 、 Figure 4 , the first protective layer 3 and the second protective layer 4 are a cross-linked polyethylene first protective layer and a cross-linked polyethylene second protective layer.
[0032] In this embodiment: The first protective layer 3 and the second protective layer 4 are made of cross-linked polyethylene, which has good high-temperature resistance and heat insulation performance, and has good mechanical properties, and can well protect the internal wire cores.
[0033] Please refer to Figure 2 、 Figure 4, the cladding 9 is a polymethyl methacrylate cladding.
[0034] In this embodiment: The cladding 9 is polymethyl methacrylate, which has a relatively high refractive index and can effectively improve the transmission performance of the optical fiber core 8.
[0035] Please refer to Figure 2 , Figure 4 , the insulating layer 12 is an ethylene propylene rubber layer insulating layer.
[0036] In this embodiment: The insulating layer 12 is an ethylene propylene rubber layer. Ethylene propylene rubber has good electrical insulation performance and high temperature resistance, and can play a role in protecting the internal cable core 11.
[0037] Please refer to Figure 2 , Figure 4 , the first filling layer 10 and the second filling layer 13 are a fluoropolymer first filling layer and a fluoropolymer second filling layer.
[0038] In this embodiment: The first filling layer 10 and the second filling layer 13 are fluoropolymers. Fluoropolymers have excellent high temperature resistance, chemical stability and electrical insulation, and their friction coefficient is relatively low, which can effectively reduce the wear of the cladding 9 and the insulating layer 12, and thus can improve the service life of the optical fiber core 8 and the cable core 11.
[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising" - "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process - method - article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process - method - article or device.
[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A photovoltaic composite overhead cable, comprising a composite overhead cable body (1), characterized in that: The outer side of the composite overhead cable body (1) is a sheath (2), the interior of the sheath (2) is provided with a protective layer 1 (3), the interior of the protective layer 1 (3) is provided with a protective layer 2 (4), the interior of the protective layer 2 (4) is provided with a partition layer 1 (5), the interior of the partition layer 1 (5) is provided with a partition layer 2 (7), reinforcing ribs (6) and an optical fiber core (8) are provided between the partition layer 1 (5) and the partition layer 2 (7), the outer side of the optical fiber core (8) is sleeved with a cladding (9), the outer side of the cladding (9) is provided with a filling layer 1 (10), the interior of the partition layer 2 (7) is provided with a cable core (11), the outer side of the cable core (11) is sleeved with an insulating layer (12), and the space between the insulating layer (12) and the partition layer 2 (7) is filled with a filling layer 2 (13).
2. The optoelectronic composite overhead cable according to claim 1, characterized in that: The six reinforcing ribs (6) are provided, and the two ends of the six reinforcing ribs (6) are respectively fixedly arranged on the inner side of the partition layer 1 (5) and the outer side of the partition layer 2 (7). The six reinforcing ribs (6) separate the partition layer 1 (5) and the partition layer 2 (7) into six cavities. The six optical fiber cores (8) are provided, and the six optical fiber cores (8) are respectively arranged inside the six cavities. The cladding (9) fills the inside of each cavity.
3. The optoelectronic composite overhead cable according to claim 1, characterized in that: The sheath (2) is a polyvinyl chloride sheath.
4. The optoelectronic composite overhead cable according to claim 1, characterized in that: The protective layer one (3) and the protective layer two (4) are cross-linked polyethylene protective layer one and cross-linked polyethylene protective layer two.
5. The optoelectronic composite overhead cable according to claim 1, characterized in that: The cladding (9) is a polymethyl methacrylate cladding.
6. The optoelectronic composite overhead cable according to claim 1, characterized in that: The insulating layer (12) is an ethylene propylene rubber layer insulating layer.
7. The optoelectronic composite overhead cable according to claim 1, characterized in that: The filling layer one (10) and the filling layer two (13) are fluorine-containing polymer filling layer one and fluorine-containing polymer filling layer two.