Joint-free dynamic and static combined submarine cable

Abstract

The utility model provides a joint-free dynamic and static combined submarine cable, comprising a dynamic transmission assembly comprising a first armor layer and a second armor layer; the transition transmission assembly comprises a third armor layer and an outer coating layer, the third armor layer is connected to the first armor layer, and the outer coating layer is connected to the second armor layer; and the static transmission assembly comprises a fourth armor layer. The cable not only has all advantages of a dynamic cable and a static cable, but also does not need to be provided with an additional connection box and other structures, so that the production cost can be greatly reduced in the actual use process, the installation operation process is simplified, the connection strength between the dynamic cable and the static cable is greatly improved, and the service life of the cable is prolonged. Therefore, the joint-free dynamic and static combined submarine cable can be suitable for more scenes. Compared with the conventional technology at the present stage, the method has the advantages of being low in cost, high in connection strength, wide in adaptability, high in mechanical performance, convenient to operate, stable, environmentally friendly and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a jointless dynamic and static combined submarine cable. Background Art

[0002] Against the backdrop of global climate governance, achieving carbon peak and carbon neutrality have become important strategic goals for driving the transformation of the global energy structure. To address this goal, the development of electric energy is gradually moving towards low-carbon and even zero-carbon development. Wind energy, a clean, renewable energy source, has seen its share of global energy consumption increase year by year. Particularly in my country, the development and utilization of wind energy has become a key component in achieving a low-carbon transformation of electric energy. In recent years, the development of offshore fixed wind power platforms has reached saturation. According to statistics, approximately 80% of offshore wind energy resources are located in waters deeper than 60 meters, prompting a gradual shift in the focus of wind energy development to deep-sea areas.

[0003] Against this backdrop, floating offshore wind platforms have emerged as a crucial system for capturing wind energy in deep waters. Compared to traditional fixed wind platforms, floating platforms are better able to capture high-quality wind energy resources in deep waters and are considered an inevitable trend in the future development of offshore wind power. However, with the continuous advancement of offshore wind power technology, the supporting submarine cable systems are also facing new challenges.

[0004] At the same time, the long-term operation of fixed offshore oil platforms has led to a shortage of reserved submarine cable routing resources, making it impossible to accommodate the demand for new submarine cables. Newly constructed routing racks have limitations in statically laying submarine cables, making the use of dynamic submarine cables increasingly important on offshore oil platforms. Dynamic submarine cables can adapt to changing seabed topography, maintaining cable flexibility and security, and effectively reducing the failure rate of submarine cable systems.

[0005] Currently, the dynamic submarine cables used in floating offshore wind turbines and oil platforms need to be transmitted via static cables on the seabed to land or other offshore equipment. In this process, the equipment that converts the dynamic and static submarine cables—the dynamic-static cable conversion closure—plays a crucial role. However, existing dynamic-static cable conversion closures are subject to high costs and complex on-site installation, which to some extent limits their widespread application. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problems of high cost and complicated installation of the dynamic and static cable conversion joint box in the prior art, and to provide a jointless dynamic and static combined submarine cable.

[0007] To solve the above technical problems, the utility model provides a jointless dynamic-static combined submarine cable, which includes: a dynamic transmission component, the dynamic transmission component includes a first armor layer and a second armor layer, the second armor layer is covered and connected to the outer surface of the first armor layer; a transition transmission component, one end of the transition transmission component is connected to the dynamic transmission component, which includes a third armor layer and an outer layer, the outer layer is covered and connected to the outer surface of the third armor layer, wherein the third armor layer is connected to the first armor layer, and the outer layer is connected to the second armor layer; a static transmission component, the static transmission component is connected to the other end of the transition transmission component, which includes a fourth armor layer, the fourth armor layer is connected to the third armor layer, the first armor layer, the second armor layer, the third armor layer and the fourth armor layer all include a plurality of metal wires arranged in the same direction, and the outer layer includes a plurality of insulating wires arranged in the same direction; at least one cable core, at least one cable core is sequentially passed through the center of the first armor layer, the center of the third armor layer and the center of the fourth armor layer.

[0008] In one embodiment of the present invention, the cross-sectional diameter of the dynamic transmission component is larger than the cross-sectional diameter of the static transmission component, and the cross-sectional diameter of the transition transmission component transitions uniformly from the dynamic transmission component to the static transmission component.

[0009] In one embodiment of the present invention, the dynamic transmission component includes a first filler, the transition transmission component includes a second filler, and the static transmission component includes a third filler. The first filler, the second filler, and the third filler are all covered and connected to at least one surface of the cable core.

[0010] In one embodiment of the present invention, the dynamic transmission component, the transition transmission component, and the static transmission component all include optical cable detection units, and the optical cable detection units are respectively embedded in the first filling piece, the second filling piece, and the third filling piece.

[0011] In one embodiment of the present invention, the dynamic transmission component also includes a first protective layer, the transition transmission component also includes a second protective layer, and the static transmission component also includes a third protective layer. The first protective layer is connected to the inner surface of the first armor layer, the second protective layer is connected to the inner surface of the third armor layer, and the third protective layer is connected to the inner surface of the fourth armor layer.

[0012] In one embodiment of the present invention, the dynamic transmission component also includes a first insulation layer, the transition transmission component also includes a second insulation layer, and the static transmission component also includes a third insulation layer. The first insulation layer is connected to the outer surface of the second armor layer, the second insulation layer is connected to the outer surface of the outer layer, and the third insulation layer is connected to the outer surface of the fourth armor layer.

[0013] In one embodiment of the present invention, the cable core includes a conductor and a conductor shielding layer, and the conductor shielding layer is covered and connected to the outer surface of the conductor.

[0014] In one embodiment of the present invention, the cable core also includes an insulation layer, an insulation shielding layer, a first water-blocking layer, a metal shielding layer, a second water-blocking layer and a sheath arranged in sequence from the inside to the outside, wherein the insulation layer is covered and connected to the outer surface of the conductor shielding layer.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] The jointless dynamic and static combined submarine cable described in the present invention realizes a uniform transition connection between the dynamic transmission component and the static transmission component through the transition transmission component. The processed jointless dynamic and static combined submarine cable not only has all the advantages of the dynamic cable and the static cable, but also does not need to set up additional connection boxes and other structures. Therefore, in actual use, it can greatly reduce production costs and simplify the installation operation process. At the same time, it greatly improves the connection strength between the dynamic cable and the static cable, thereby making the jointless dynamic and static combined submarine cable applicable to more scenarios. Compared with the conventional technology at this stage, the present application has the advantages of low cost, high connection strength, wide adaptability, high mechanical performance, easy operation, and stable and environmental protection, and has broad prospects for use in this industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the connection structure of a jointless dynamic and static combined submarine cable in a preferred embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 The cross-sectional structure diagram of the cable core in the jointless dynamic and static combined submarine cable is shown;

[0020] Figure 3 yes Figure 1 The cross-sectional structural diagram of the dynamic transmission component in the jointless dynamic-static combined submarine cable is shown;

[0021] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the transition transmission component in the jointless dynamic and static combined submarine cable;

[0022] Figure 5 yes Figure 1 The cross-sectional structure diagram of the static transmission component in the jointless dynamic-static combined submarine cable is shown.

[0023] Explanation of the reference numerals in the specification: 100, cable core; 110, conductor; 120, conductor shielding layer; 130, insulation layer; 140, insulation shielding layer; 150, first water-blocking layer; 160, metal shielding layer; 170, second water-blocking layer; 180, sheath; 200, dynamic transmission component; 210, first filling piece; 220, first protective layer; 230, first armor layer; 240, second armor layer; 250, first insulation layer; 300, transition transmission component; 310, second filling piece; 320, second protective layer; 330, third armor layer; 340, outer layer; 350, second insulation layer; 400, static transmission component; 410, third filling piece; 420, third protective layer; 430, fourth armor layer; 440, third insulation layer. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention. Example

[0025] See also Figure 1As shown, this embodiment provides a jointless dynamic and static combined submarine cable, which includes: a dynamic transmission component 200, the dynamic transmission component 200 includes a first armor layer 230 and a second armor layer 240, the second armor layer 240 is covered and connected to the outer surface of the first armor layer 230; a transition transmission component 300, one end of the transition transmission component 300 is connected to the dynamic transmission component 200, and includes a third armor layer 330 and an outer layer 340, the outer layer 340 is covered and connected to the outer surface of the third armor layer 330, wherein the third armor layer 330 is connected to the first armor layer 230, and the outer layer 340 is connected to the third armor layer 330. Two armor layers 240; a static transmission component 400, the static transmission component 400 is connected to the other end of the transition transmission component 300, which includes a fourth armor layer 430, the fourth armor layer 430 is connected to the third armor layer 330, the first armor layer 230, the second armor layer 240, the third armor layer 330 and the fourth armor layer 430 all include a plurality of metal wires arranged in the same direction, and the outer layer 340 includes a plurality of insulating wires arranged in the same direction; at least one cable core 100, at least one cable core 100 is sequentially passed through the center of the first armor layer 230, the center of the third armor layer 330 and the center of the fourth armor layer 430.

[0026] The jointless dynamic and static combined submarine cable described in the present invention realizes a uniform transition connection between the dynamic transmission component 200 and the static transmission component 400 through the transition transmission component 300. The processed jointless dynamic and static combined submarine cable not only has all the advantages of dynamic cables and static cables, but also does not require the provision of additional connection boxes and other structures. Therefore, in actual use, it can greatly reduce production costs and simplify the installation operation process. At the same time, it greatly improves the connection strength between the dynamic cable and the static cable, thereby making the jointless dynamic and static combined submarine cable applicable to more scenarios. Compared with conventional technologies at this stage, the present application has the advantages of low cost, high connection strength, wide adaptability, high mechanical performance, easy operation, and stable and environmental protection, and has broad prospects for use in this industry.

[0027] See also Figure 1 As shown, since the dynamic transmission component 200 has a more layered structure than the static transmission component 400, the cross-sectional diameter of the dynamic transmission component 200 in this embodiment is larger than the cross-sectional diameter of the static transmission component 400. In order to reduce the impact on the connection between the two during actual use, the transition transmission component 300 needs to be cut so that its cross-sectional diameter is uniformly transitioned from the dynamic transmission component 200 to the static transmission component 400.

[0028] See also Figure 2As shown, in this embodiment, in order to improve the electrical conductivity of the cable, three cable cores 100 are set inside the dynamic transmission component 200, the excessive transmission component 300 and the static transmission component 400. The three cable cores 100 are connected to each other to form a triangular support structure in the cross-sectional direction. Furthermore, the cable core 100 in this embodiment includes a conductor 110 and a conductor shielding layer 120. The conductor shielding layer 120 is coated and connected to the outer surface of the conductor 110. The conductor 110 is preferably a second-class copper conductor, and its surface is provided with a circular longitudinal glue-coated water-blocking structure or can be tightly coated with other materials that meet the water-blocking requirements. In other embodiments, the conductor 110 can also be set to other conductor materials that meet the application requirements. The present utility model does not impose specific restrictions on this. Furthermore, the conductor shielding layer 120 in this embodiment adopts a semi-conductive cross-linked material or other semi-conductive polymer, which is used to solve the problem of excessive local voltage field.

[0029] Specifically, the cable core 100 also includes an insulating layer 130, an insulating shielding layer 140, a first water-blocking layer 150, a metal shielding layer 160, a second water-blocking layer 170 and a sheath 180 arranged in sequence from the inside to the outside, wherein the insulating layer 130 is covered and connected to the outer surface of the conductor shielding layer 120. In this embodiment, the insulating layer 130 is preferably made of water-tree resistant cross-linked polyethylene (XLPE) insulation material, which can provide electrical insulation to prevent current leakage; the insulating shielding layer 140 uses a semi-conductive cross-linked material or other semi-conductive polymer, which is used to further uniformize the electric field, especially at the cable terminals or joints; the first water-blocking layer 150 uses a semi-conductive water-resistant tape or other tape that meets the requirements to prevent moisture from penetrating into the cable, thereby protecting the insulating layer 130; the metal shielding layer 160 is composed of copper tape or copper wire, which is wrapped around the water-blocking layer to shield external electromagnetic interference and serve as a return path to carry large current in the event of a short circuit; the second water-blocking layer 170 also uses a semi-conductive water-resistant tape or other tape that meets the requirements to provide additional waterproof protection; the sheath 180 uses a semi-conductive polyethylene (PE) material to protect the cable from mechanical damage and environmental factors. In other embodiments, it can also be configured with other materials with protective effects.

[0030] See also Figure 3 As shown, the dynamic transmission component 200 in this embodiment includes a first filler 210, the transition transmission component 300 includes a second filler 310, and the static transmission component 400 includes a third filler 410. The first filler 210, the second filler 310 and the third filler 410 are all covered and connected to the surface of at least one of the cable cores 100.

[0031] The operating environment of the dynamic transmission component 200 in this embodiment is relatively complex and needs to withstand multiple loads such as tension, bending, and torsion at the same time. Therefore, a first filler 210 and an optical cable detection unit are provided in its structure. The first filler 210 is covered and connected to the surface of at least one of the cable cores 100, and the optical cable detection unit is embedded and connected to the first filler 210. The main function of the first filler 210 is to protect the cable core 100 and reduce the risk of damage under complex mechanical loads. It can absorb part of the external force, reduce the pressure on the cable core 100, and provide a certain degree of structural stability. The optical cable detection unit is used to monitor the performance of the optical cable, such as signal transmission quality, optical fiber integrity, etc. It can provide timely feedback when the optical cable fails or its performance degrades, so as to facilitate maintenance or replacement.

[0032] Correspondingly, see Figure 4 and Figure 5 As shown, the transition transmission assembly 300 includes a second filler 310, and the static transmission assembly 400 includes a third filler 410. The second filler 310 and the third filler 410 are both covered and connected to the surface of at least one of the cable cores 100. The transition transmission assembly 300 and the static transmission assembly 400 also include an optical cable detection unit, which is embedded in the second filler 310 and the third filler 410, respectively.

[0033] See also Figures 3 to 5 As shown, the dynamic transmission component 200 in this embodiment also includes a first protective layer 220, the transition transmission component 300 also includes a second protective layer 320, and the static transmission component 400 also includes a third protective layer 420. The first protective layer 220 is connected to the inner surface of the first armor layer 230, the second protective layer 320 is connected to the inner surface of the third armor layer 330, and the third protective layer 420 is connected to the inner surface of the fourth armor layer 430. The first protective layer 220, the second protective layer 320 and the third protective layer 420 are all made of medium-density polyethylene (MDPE) material to achieve all-round protection of the cable core 100.

[0034] In this embodiment, the first armor layer 230, the second armor layer 240, the third armor layer 330, and the fourth armor layer 430 are all made of two layers of galvanized steel wire, which can support and protect the internal battery cells while achieving an electromagnetic shielding effect. This application provides different armor layer structures in the corresponding structures based on the differences in the application scenarios and scope of use of the dynamic transmission component 200 and the static transmission component 400. Furthermore, it is precisely because of the differences in the armor layers that it is necessary to achieve a uniform transition and connection between the dynamic transmission component 200 and the static transmission component 400. Furthermore, the insulating wire in this embodiment is preferably a plastic structural element with the same diameter as the metal wire in the second armor layer 240. Therefore, by replacing the second armor layer 240 one by one, a uniform transition from the dynamic transmission component 200 to the static transmission component 400 can be achieved.

[0035] Furthermore, the dynamic transmission assembly 200 in this embodiment further includes a first insulation layer 250, the transition transmission assembly 300 further includes a second insulation layer 350, and the static transmission assembly 400 further includes a third insulation layer 440. The first insulation layer 250 is connected to the outer surface of the second armor layer 240, the second insulation layer 350 is connected to the outer surface of the outer layer 340, and the third insulation layer 440 is connected to the outer surface of the fourth armor layer 430. In this embodiment, the first insulation layer 250, the second insulation layer 350, and the third insulation layer 440 are preferably made of high-density polyethylene (HDPE) to provide high elasticity, high strength, and waterproof insulation.

[0036] In summary, the jointless dynamic and static combined submarine cable described in the present invention realizes a uniform transition connection between the dynamic transmission component 200 and the static transmission component 400 through the transition transmission component 300. The processed jointless dynamic and static combined submarine cable not only has all the advantages of dynamic cables and static cables, but also does not require the provision of additional connection boxes and other structures. Therefore, in actual use, it can greatly reduce production costs and simplify the installation operation process. At the same time, it greatly improves the connection strength between the dynamic cable and the static cable, thereby making the jointless dynamic and static combined submarine cable applicable to more scenarios. Compared with conventional technologies at this stage, the present application has the advantages of low cost, high connection strength, wide adaptability, high mechanical performance, easy operation, and stable and environmental protection, and has broad prospects for use in this industry.

[0037] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A jointless dynamic and static combined submarine cable, characterized by: include: A dynamic transmission component, comprising a first armor layer and a second armor layer, wherein the second armor layer is connected to an outer surface of the first armor layer; A transition transmission component, one end of which is connected to the dynamic transmission component, comprising a third armor layer and an outer layer, wherein the outer layer covers and is connected to the outer surface of the third armor layer, wherein the third armor layer is connected to the first armor layer, and the outer layer is connected to the second armor layer; a static transmission component connected to the other end of the transition transmission component, comprising a fourth armor layer connected to the third armor layer, wherein the first armor layer, the second armor layer, the third armor layer, and the fourth armor layer each comprise a plurality of metal wires arranged in the same direction, and the outer layer comprises a plurality of insulating wires arranged in the same direction; At least one cable core is sequentially passed through the center of the first armor layer, the center of the third armor layer, and the center of the fourth armor layer.

2. The jointless dynamic-static combined submarine cable according to claim 1, characterized in that: The cross-sectional diameter of the dynamic transmission component is larger than the cross-sectional diameter of the static transmission component, and the cross-sectional diameter of the transition transmission component transitions uniformly from the dynamic transmission component toward the static transmission component.

3. The jointless dynamic-static combined submarine cable according to claim 1, characterized in that: The dynamic transmission component includes a first filling piece, the transition transmission component includes a second filling piece, and the static transmission component includes a third filling piece. The first filling piece, the second filling piece, and the third filling piece are all covered and connected to at least one surface of the cable core.

4. The jointless dynamic-static combined submarine cable according to claim 3, characterized in that: The dynamic transmission component, the excessive transmission component, and the static transmission component all include optical cable detection units, and the optical cable detection units are respectively embedded in the first filling piece, the second filling piece, and the third filling piece.

5. The jointless dynamic-static combined submarine cable according to claim 1, characterized in that: The dynamic transmission component also includes a first protective layer, the transition transmission component also includes a second protective layer, and the static transmission component also includes a third protective layer. The first protective layer is connected to the inner surface of the first armor layer, the second protective layer is connected to the inner surface of the third armor layer, and the third protective layer is connected to the inner surface of the fourth armor layer.

6. The jointless dynamic-static combined submarine cable according to claim 1, characterized in that: The dynamic transmission component also includes a first insulation layer, the transition transmission component also includes a second insulation layer, and the static transmission component also includes a third insulation layer. The first insulation layer is connected to the outer surface of the second armor layer, the second insulation layer is connected to the outer surface of the outer layer, and the third insulation layer is connected to the outer surface of the fourth armor layer.

7. The jointless dynamic-static combined submarine cable according to claim 1, characterized in that: The cable core includes a conductor and a conductor shielding layer, and the conductor shielding layer is covered and connected to the outer surface of the conductor.

8. The jointless dynamic-static combined submarine cable according to claim 7, characterized in that: The cable core further comprises an insulating layer, an insulating shielding layer, a first water-blocking layer, a metal shielding layer, a second water-blocking layer and a sheath which are sequentially arranged from the inside to the outside, wherein the insulating layer is covered and connected to the outer surface of the conductor shielding layer.

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