Power and communication transmission submarine composite cable

Abstract

The utility model relates to the technical field of submarine cable, provide a kind of electric power and communication transmission submarine composite cable, including three electric power core, three loading supports and three signal cores, electric power core is equidistant and parallelly arranged in circumferential direction, loading support is assembled between adjacent two electric power cores one by one in one-to-one correspondence, and signal core is assembled in loading support one by one in one-to-one correspondence, and the cross section of the whole composite cable core is circular, and multiple force members are arranged in the gap between loading support and electric power core. According to the electric power and communication transmission submarine composite cable of the utility model, power transmission and communication transmission are integrated in a compact circular cross section, manufacturing and laying costs are saved, and the seabed occupied space is optimized. The physical isolation of the loading support and the structural design of the electric power core and the signal core can effectively block the electromagnetic field generated by the strong alternating current in the electric power core from interfering with the signal in the signal core, ensuring the clarity and stability of communication transmission.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable technology, and in particular to a submarine composite cable for power and communication transmission. Background Technology

[0002] With the rapid development of the marine economy and the continuous expansion of offshore resource development, the demand for cross-sea power transmission and information communication is increasing. As a core infrastructure connecting offshore platforms, islands, and mainland power grids and information networks, the integration, reliability, and economy of submarine composite cables for power and communication transmission have become key factors determining the success or failure of system engineering projects. Integrating power transmission and communication functions into a single cable can effectively reduce the number of laying operations, lower overall costs, and conserve scarce submarine routing resources. Therefore, the development of high-performance composite cables has a clear engineering necessity and an urgent market demand.

[0003] Currently, there are two types of technical solutions in this field: The first option is to lay power cables and communication cables separately. While this avoids electromagnetic interference from power transmission to communication signals, it leads to significant resource waste. The separate manufacturing and laying of the two cables not only doubles material and ship operation costs but also increases the area occupied on the seabed, which is particularly disadvantageous in areas with tight route planning. More importantly, the relative positions of the two cables on the seabed may change due to environmental factors such as ocean currents, creating enormous difficulties for precise positioning, maintenance, and repair in the future.

[0004] The second approach involves bundling or co-extruding the power and optical units within the same sheath. While this integration reduces installation costs, its internal structure is often loose or poorly designed, presenting significant drawbacks. First, the alternating magnetic field generated by the AC current in the power conductor can cause severe electromagnetic interference to adjacent optical fiber units, leading to signal attenuation, increased bit error rate, and even communication interruption. Second, the uneven mechanical properties within this cable structure make it prone to relative displacement, friction, and even compression between units during installation, retrieval, and operation under complex mechanical stresses. This can damage the optical fiber and accelerate the aging of the electrical insulation layer due to stress concentration. Furthermore, the irregular internal structure can cause permanent deformation of the cable when bent, affecting its long-term stability.

[0005] Chinese patent CN114914017A discloses a submarine cable that improves the mechanical protection and sealing performance of the submarine cable by optimizing the armor layer structure. However, its single function, low integration, lack of systematic design and overall structural limitations make it difficult to meet the comprehensive needs of modern submarine composite cables for multi-functional integration, intelligent transmission and structural optimization.

[0006] Therefore, improving the electromagnetic compatibility between power and communication units, while optimizing and stabilizing the internal mechanical structure, and significantly improving the overall mechanical performance, environmental adaptability and service life of the cable body while ensuring efficient dual-function transmission, has become an urgent technical problem to be solved. Utility Model Content

[0007] In view of this, in order to overcome the shortcomings of the prior art, this utility model aims to provide a submarine composite cable for power and communication transmission.

[0008] This utility model provides a submarine composite cable for power and communication transmission. The submarine composite cable for power and communication transmission includes three power cores, three loading brackets and three signal cores. The power cores are arranged in parallel and at equal intervals in the circumferential direction, the loading brackets are assembled one-to-one between two adjacent power cores, and the signal cores are assembled one-to-one within the loading brackets to form a composite cable core with an overall circular cross-section. Multiple load-bearing components are arranged in the gap between the loading brackets and the power cores.

[0009] Optionally, in the submarine composite cable for power and communication transmission of this utility model, the power core consists of a power conductor and, from the inside out, a power inner shielding layer, a power insulation layer, a power outer shielding layer, a power metal sheath, and a power outer sheath arranged sequentially on the outside of the power conductor.

[0010] Optionally, the submarine composite cable for power and communication transmission of this utility model includes an embedded wall and a loading groove integrally connected to one end of the embedded wall. The loading groove is a non-closed circular tube, and the open end of the loading groove is symmetrically provided with covering walls.

[0011] Optionally, in the submarine composite cable for power and communication transmission of this invention, a first arc groove matching the power core is provided on the side of the embedded wall.

[0012] Optionally, the submarine composite cable for power and communication transmission of this utility model has an overall arc-shaped sheath, and the sheaths of adjacent mounting supports are connected to form an overall ring-shaped sheath.

[0013] Optionally, in the submarine composite cable for power and communication transmission of this invention, a second arc groove matching the power core is provided on the inner side of the end of the sheathing wall.

[0014] Optionally, in the submarine composite cable for power and communication transmission of this utility model, the signal cores are arranged one-to-one in the loading slots of the loading bracket.

[0015] Optionally, in the submarine composite cable for power and communication transmission of this utility model, the load-bearing components are arranged one-to-one within the cavity formed by the sheathing wall, the loading groove, and the power core.

[0016] Optionally, the submarine composite cable for power and communication transmission of this utility model includes a signal core comprising multiple optical fiber cores, an isolation optical fiber paste covering the outside of the multiple optical fiber cores, and an optical fiber sleeve disposed outside the optical fiber cores and the isolation optical fiber paste. The outer side of the optical fiber sleeve is provided with a signal insulation layer, a signal metal sheath, and a signal outer sheath in sequence from the inside to the outside.

[0017] Optionally, in the submarine composite cable for power and communication transmission of this utility model, the isolation layer covers the outside of the composite cable core, and the metal sheath, inner sheath, armor layer and outer sheath are arranged coaxially outside the isolation layer from the inside to the outside.

[0018] This utility model discloses a submarine composite cable for power and communication transmission. It combines three power cores, three signal cores, and multiple load-bearing components through a mounting bracket, integrating power transmission and communication transmission within a compact circular cross-section. This parallel integration of power and communication saves manufacturing and laying costs and optimizes the space occupied on the seabed. The physical isolation of the mounting bracket and the structural design of the power cores and signal cores can effectively block the electromagnetic field generated by the strong alternating current in the power core from interfering with the signal in the signal core, ensuring the clarity and stability of communication transmission. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a submarine composite cable for power and communication transmission according to an exemplary embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a power core according to an exemplary embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the loading bracket according to an exemplary embodiment of the present invention; Figure 4 This is a partial structural schematic diagram according to an exemplary embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a signal chip according to an exemplary embodiment of the present invention; In the diagram, 1-power core, 2-loading bracket, 3-signal core, 4-load-bearing component, 5-isolation layer, 6-metal sheath, 7-inner sheath, 8-armor layer, 9-outer sheath, 11-power conductor, 12-power inner shielding layer, 13-power insulation layer, 14-power outer shielding layer, 15-power metal sheath, 16-power outer sheath, 21-embedded wall, 22-loading groove, 23-covering wall, 211-first arc groove, 231-second arc groove, 31-fiber core, 32-isolation fiber optic paste, 33-fiber sleeve, 34-signal insulation layer, 35-signal metal sheath, 36-signal outer sheath. Detailed Implementation

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the following embodiments and features can be combined with each other; and, based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0023] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0024] Figure 1 This is a schematic diagram of the structure of a submarine composite cable for power and communication transmission according to an exemplary embodiment of the present invention, as shown below. Figure 1 As shown, the submarine composite cable for power and communication transmission in this embodiment includes three power cores 1, three mounting brackets 2, and three signal cores 3. The power cores 1, which are equally spaced and parallel in the circumferential direction, the mounting brackets 2 which are assembled one-to-one between two adjacent power cores 1, and the signal cores 3 which are assembled one-to-one within the mounting brackets 2, form a composite cable core with an overall circular cross-section. Multiple load-bearing components 4 are arranged in the gap between the mounting brackets 2 and the power cores 1. An isolation layer 5 covers the outside of the composite cable core. A metal sheath 6, an inner sheath 7, an armor layer 8, and an outer sheath 9 are arranged coaxially outside the isolation layer 5 from the inside to the outside.

[0025] Figure 2This is a schematic diagram of the structure of a power core according to an exemplary embodiment of the present invention, as shown below. Figure 2 As shown, in this embodiment, the power core 1 consists of a power conductor 11 and, from the inside out, a power inner shielding layer 12, a power insulation layer 13, a power outer shielding layer 14, a power metal sheath 15, and a power outer sheath 16 arranged sequentially on the outside of the power conductor 11.

[0026] Figure 3 This is a structural schematic diagram of a loading bracket according to an exemplary embodiment of the present invention. Figure 4 This is a partial structural schematic diagram according to an exemplary embodiment of the present invention, as shown below. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the loading bracket 2 includes an embedded wall 21 and a loading groove 22 integrally connected to one end of the embedded wall 21. The loading groove 22 is generally a non-closed circular tube, and the open end of the loading groove 22 is symmetrically provided with covering walls 23.

[0027] As an optional example, the side of the embedded wall 21 is provided with a first arc groove 211 that matches the power core 1, the covering wall 23 is arc-shaped as a whole, the covering walls 23 of adjacent loading brackets 2 are connected to each other to form an overall ring-shaped covering wall, and the inner side of the end of the covering wall 23 is provided with a second arc groove 231 that matches the power core 1.

[0028] In this embodiment, the overall structural design of the mounting bracket 2 can be tightly fitted with the power core 1, integrating the three parallel power cores 1 into a round and stable whole, effectively distributing the tensile, compressive and torsional stresses borne during manufacturing, laying, transportation and application, and preventing relative displacement and wear between the power cores 1.

[0029] In practical applications, signal cores 3 are correspondingly installed in the loading slots 22 of the loading bracket 2. Load-bearing components 4 are correspondingly installed within the cavity formed by the covering wall 23, the loading slots 22, and the power cores 1. In practical applications, load-bearing components 4 can be made of high-strength steel cores, aramid yarn, or high-strength organic fibers, etc., to improve the tensile strength of the overall assembly without increasing the overall outer diameter, while fully utilizing the internal space. This allows them to adapt to laying environments with larger spans and greater depths.

[0030] In this embodiment, the modular design allows the power core 1, signal core 3, and mounting bracket 2 to be produced and inspected independently in advance, and then assembled. This parallel production method can improve production efficiency.

[0031] Figure 5 This is a schematic diagram of the structure of a signal chip according to an exemplary embodiment of the present invention, as shown below. Figure 5As shown, in this embodiment, the signal core 3 includes multiple optical fiber cores 31, an isolation optical fiber paste 32 covering the outside of the multiple optical fiber cores 31, and an optical fiber sleeve 33 disposed on the outside of the optical fiber cores 31 and the isolation optical fiber paste 32. The outer side of the optical fiber sleeve 33 is provided with a signal insulation layer 34, a signal metal sheath 35 and a signal outer sheath 36 from the inside to the outside.

[0032] In this embodiment, three power cores 1, three signal cores 3, and multiple load-bearing components 4 are combined using a mounting bracket 2, integrating power transmission and communication transmission within a compact circular cross-section. This parallel integration of power and communication, compared to traditional solutions involving two separate cables or a centrally placed optical unit, saves manufacturing and laying costs and optimizes seabed space. The physical isolation provided by the mounting bracket 2 and the structural design of the power cores 1 and signal cores 3 effectively block the electromagnetic field generated by the strong alternating current in the power cores 1 from interfering with the signal in the signal cores 3, ensuring the clarity and stability of communication transmission.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A submarine composite cable for power and communication transmission, characterized in that, The submarine composite cable for power and communication transmission includes three power cores, three mounting brackets, and three signal cores. The power cores are arranged in parallel and at equal intervals in the circumferential direction, the mounting brackets are assembled one-to-one between adjacent power cores, and the signal cores are assembled one-to-one within the mounting brackets to form a composite cable core with an overall circular cross-section. Multiple load-bearing components are arranged in the gap between the mounting brackets and the power cores.

2. The submarine composite cable for power and communication transmission according to claim 1, characterized in that, The power core consists of a power conductor and, from the inside out, a power inner shielding layer, a power insulation layer, a power outer shielding layer, a power metal sheath, and a power outer sheath, arranged sequentially on the outside of the power conductor.

3. The submarine composite cable for power and communication transmission according to claim 1, characterized in that, The loading bracket includes an embedded wall and a loading groove integrally connected to one end of the embedded wall. The loading groove is a non-closed circular tube, and the open end of the loading groove is symmetrically provided with covering walls.

4. The submarine composite cable for power and communication transmission according to claim 3, characterized in that, The side of the embedded wall is provided with a first arc groove that matches the power core.

5. The submarine composite cable for power and communication transmission according to claim 4, characterized in that, The overall covering wall is arc-shaped, and the covering walls of adjacent loading supports are connected to form an overall ring-shaped covering wall.

6. The submarine composite cable for power and communication transmission according to claim 5, characterized in that, A second arcuate groove matching the power core is provided on the inner side of the end of the cladding wall.

7. The submarine composite cable for power and communication transmission according to claim 6, characterized in that, The signal cores are installed one-to-one in the loading slots of the loading bracket.

8. The submarine composite cable for power and communication transmission according to claim 7, characterized in that, The load-bearing components are arranged one-to-one within the cavity formed by the covering wall, the loading groove, and the power core.

9. The submarine composite cable for power and communication transmission according to claim 1, characterized in that, The signal core includes multiple optical fiber cores, an isolation optical fiber paste covering the outside of the multiple optical fiber cores, and an optical fiber sleeve disposed on the outside of the optical fiber cores and the isolation optical fiber paste. From the inside to the outside, the outer side of the optical fiber sleeve is provided with a signal insulation layer, a signal metal sheath, and a signal outer sheath.

10. The submarine composite cable for power and communication transmission according to claim 1, characterized in that, The isolation layer covers the outside of the composite cable core, and the metal sheath, inner sheath, armor layer and outer sheath are arranged coaxially outside the isolation layer from the inside to the outside.

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