Dynamic submarine cable system
By introducing a trajectory adjustment module into the dynamic submarine cable system to form a vertical arc structure, the problem that traditional submarine cables cannot be adapted to single-point mooring platforms is solved, and safe and stable transmission and long-life operation of submarine cables are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional dynamic submarine cable alignment designs cannot adapt to the structural characteristics and omnidirectional rotation requirements of single-point mooring platforms, posing risks of collision and interference, and failing to guarantee the safe operation of marine engineering projects.
A dynamic submarine cable system is adopted, including a platform, a seabed base, a dynamic submarine cable, and a trajectory adjustment module. The trajectory adjustment module adjusts the stress state of the submarine cable to form a vertical arc structure between the platform and the seabed base, avoiding lateral protrusion and lateral offset, increasing the vertical gap, and dispersing the axial tension.
Dynamic submarine cable systems can adapt to the omnidirectional rotation requirements of single-point mooring platforms, reduce the risk of collisions and interference, extend service life, reduce operation and maintenance costs, and ensure the stability and security of the transmission system.
Smart Images
Figure CN121749038A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of offshore wind power technology, and in particular to a dynamic submarine cable system. BACKGROUND
[0002] In the field of offshore wind power and other marine engineering, a dynamic submarine cable is a core energy and signal transmission component connecting a floating platform and a seabed device, and the linear design of the dynamic submarine cable directly determines the safety and stability of system operation.
[0003] At present, the mainstream dynamic submarine cable linear design scheme in the industry is a single-peak or multi-peak linear type of S shape or W shape. Such linear type is in a transverse distribution form, and the core design purpose is to meet the large-scale offset requirement of the floating foundation, to relieve the axial tension borne by the submarine cable body, and to protect the minimum bending radius of the submarine cable, so it is widely used in the scene of a multi-point mooring floating platform.
[0004] However, the above-mentioned traditional linear design has significant limitations when adapting to a single-point mooring floating platform, and it is difficult to meet the actual application requirements. The specific defects mainly lie in the following two aspects: first, the applicable scene is limited, and the traditional transversely distributed peak linear type is designed for a multi-point mooring platform, and cannot match the structural characteristics and operation requirements of a single-point mooring platform; second, there is a serious collision risk, a single-point mooring platform has a 360° omnidirectional rotation capability, when the platform is rotated to the top of the dynamic submarine cable system, if the vertical gap between the cable body and the platform is insufficient, the peak of the traditional linear type will further reduce the minimum gap between them, and it is easy to cause direct collision between the cable body and the platform structure, and further cause damage to the dynamic submarine cable, and even cause the entire transmission system to fail, which seriously threatens the safe operation of marine engineering. In addition, in a single-point mooring system, multiple anchor chains are connected to the platform rotation slip ring and suspended to extend in different directions, and the dynamic submarine cable is also suspended from the rotation slip ring, if the traditional single-peak or multi-peak linear type is used, the peak dynamic section of the dynamic submarine cable will pass between the two anchor chains, under the action of cross flow, the dynamic section of the dynamic submarine cable is easy to deviate laterally, which not only may interfere with the adjacent anchor chain, but also further aggravate the collision risk when the platform rotates, and cannot adapt to the omnidirectional rotation core requirement of the single-point mooring system. SUMMARY
[0005] In view of the above technical problems, the present application provides a dynamic submarine cable system.
[0006] The application provides a dynamic submarine cable system, comprising a platform, a seabed base arranged below the platform, a datum line formed between the seabed base and the platform, a dynamic submarine cable, one end of the dynamic submarine cable being rotatably connected to the platform, the other end of the dynamic submarine cable extending through the seabed base, and a track adjusting module connected to the dynamic submarine cable and arranged between the platform and the seabed base, the track adjusting module being used for adjusting the stress state of the dynamic submarine cable so that the dynamic submarine cable forms a vertical arc structure with the middle part rising away from the datum line and the two ends shrinking towards the datum line between the platform and the seabed base.
[0007] According to the dynamic submarine cable system provided by the application, the track adjusting module comprises a float unit connected to the dynamic submarine cable, the float unit being used for providing buoyancy for the dynamic submarine cable so that the dynamic submarine cable forms the vertical arc structure between the platform and the seabed base.
[0008] According to the dynamic submarine cable system provided by the application, the track adjusting module further comprises a gravity unit distributed along the axis direction of the dynamic submarine cable and connected to the dynamic submarine cable, the gravity unit being used for balancing at least part of the buoyancy so as to make the dynamic submarine cable form the vertical arc structure between the platform and the seabed base in cooperation with the float unit.
[0009] According to the dynamic submarine cable system provided by the application, the float unit comprises at least one float body connected to the dynamic submarine cable, and the gravity unit comprises at least one gravity block connected to the dynamic submarine cable.
[0010] According to the dynamic submarine cable system provided by the application, the number of the float units is plural, the number of the gravity units is plural, the number of the float bodies contained in each of the float units is the same or different, and the number of the gravity blocks contained in each of the gravity units is the same or different.
[0011] According to the dynamic submarine cable system provided by the application, the number of the dynamic submarine cables is plural, one end of each of the dynamic submarine cables is rotatably connected to the platform, and each of the dynamic submarine cables extends through the seabed base, the track adjusting module is arranged on each of the dynamic submarine cables, each of the dynamic submarine cables forms the vertical arc structure between the platform and the seabed base, and the plural vertical arc structures are distributed in the circumferential direction along the datum line between the platform and the seabed base.
[0012] The seabed base comprises a base body located directly below the platform and fixed to the seabed, and a guide elbow pipe embedded into the base body, and the dynamic submarine cable can extend through the guide elbow pipe.
[0013] The radius of curvature of the guide elbow pipe is greater than the minimum bending radius of the dynamic submarine cable.
[0014] The dynamic submarine cable system further comprises a rotating slip ring through which the dynamic submarine cable is rotatably connected to the platform.
[0015] The dynamic submarine cable system further comprises a bending protection sleeve arranged at the rotating slip ring and the inlet end of the guide elbow pipe and sleeved on the outer periphery of the dynamic submarine cable to limit the bending degree of the dynamic submarine cable, and a bending limiter, one end of which is connected to the outlet end of the guide elbow pipe, and the dynamic submarine cable is arranged in the bending limiter.
[0016] In the dynamic submarine cable system, four core components, i.e., a platform, a seabed base, a dynamic submarine cable and a track adjustment module, cooperatively constitute a complete transmission system adapted to a single-point mooring scene. The seabed base is arranged below the platform, for example, directly below the platform. A reference line is formed between the seabed base and the platform, for example, a vertical central axis between the seabed base and the platform. One end of the dynamic submarine cable is rotatably connected to the platform, and the other end extends through the seabed base to realize stable connection between the platform and the subsea equipment. The track adjustment module is connected to the dynamic submarine cable and precisely arranged in the area between the platform and the seabed base. The core function of the track adjustment module is to actively adjust the stress state of the dynamic submarine cable, so that the dynamic submarine cable forms a vertical arc structure with the middle part rising away from the reference line and the two ends shrinking towards the vertical central axis of the platform and the seabed base, i.e., a vertical arc structure with the middle part rising outward and the two ends shrinking towards the vertical central axis of the platform and the seabed base.
[0017] Through the above structural arrangement, the vertical arc-shaped line type is shaped by the track adjusting module, so that the dynamic submarine cable is no longer limited by the offset requirement of the multi-point mooring platform, can perfectly match the structural characteristics and operation requirement of the 360° omnidirectional rotation of the single-point mooring floating platform, and greatly broadens the applicable scenarios of the dynamic submarine cable system. The vertical arc-shaped structure has no transverse protruding wave crest, and the two ends shrink to the reference line, which can effectively increase the vertical gap between the cable body and the platform; at the same time, the vertically distributed arc-shaped structure can avoid the lateral offset of the dynamic section of the dynamic submarine cable under the action of cross flow, fundamentally eliminates the interference risk with the adjacent anchor chain and the collision risk with the cable body when the platform rotates, significantly reduces the damage probability of the dynamic submarine cable, and guarantees the stable operation of the transmission system. The track adjusting module forms a regular vertical arc of the submarine cable by actively regulating the stress, can effectively disperse the axial tension borne by the submarine cable body, avoid local stress concentration, at the same time can accurately guarantee the minimum bending radius of the submarine cable, reduce the bending fatigue damage, prolong the service life of the dynamic submarine cable, and reduce the offshore operation and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the present application or prior art, below the drawings needed to be used in the embodiments or prior art description will be simply introduced, obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0019] Figure 1 is a structural schematic diagram of the dynamic submarine cable system provided by the present application Figure 1 .
[0020] Figure 2 is a structural schematic diagram of the dynamic submarine cable system provided by the present application Figure 2 .
[0021] Figure 3 is a structural schematic diagram of the seabed base, bending protection sleeve and bending limiter in the dynamic submarine cable system provided by the present application Figure 1 .
[0022] Figure 4 is a structural schematic diagram of the seabed base, bending protection sleeve and bending limiter in the dynamic submarine cable system provided by the present application Figure 2 .
[0023] Reference signs: 100, platform; 200, seabed base; 210, base body; 220, guide elbow; 310, floater unit; 320, gravity unit; 400, rotating slip ring; 500, bending protection sleeve; 600, bending limiter. DETAILED DESCRIPTION
[0024] The embodiments of the present application will be further described in details below with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application but should not be used to limit the scope of the present application.
[0025] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0027] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.
[0028] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] The following is combined Figures 1 to 4 A dynamic submarine cable system provided by an embodiment of the present invention will be described below. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any particular limitation on the present invention.
[0030] Embodiments of the present invention provide a dynamic submarine cable system, such as Figure 1 and Figure 2 As shown, it includes: a platform 100; a seabed base 200, which is disposed below the platform 100, and a baseline is formed between the seabed base 200 and the platform 100; a dynamic submarine cable, one end of which is rotatably connected to the platform 100, and the other end of which extends and passes through the seabed base 200; and a trajectory adjustment module, which is connected to the dynamic submarine cable and located between the platform 100 and the seabed base 200. The trajectory adjustment module is used to adjust the stress state of the dynamic submarine cable so that the dynamic submarine cable forms a vertical arc-shaped structure between the platform 100 and the seabed base 200, with the middle part bulging away from the baseline and both ends contracting towards the baseline.
[0031] In other words, the dynamic submarine cable system provided by this invention mainly includes four core components: platform 100, seabed base 200, dynamic submarine cable, and trajectory adjustment module. These components work together to form a complete transmission system adapted to single-point mooring scenarios. The seabed base 200 is precisely positioned directly below the platform 100, ensuring the rationality of the system's vertical layout. A baseline is formed between the two, such as the vertical central axis between them. One end of the dynamic submarine cable is rotatably connected to the platform 100, and the other end extends and passes through the seabed base 200, achieving a stable connection between the platform 100 and the seabed equipment. The trajectory adjustment module is connected to the dynamic submarine cable and precisely deployed in the area between the platform 100 and the seabed base 200. Its core function is to actively adjust the stress state of the dynamic submarine cable, ultimately causing the dynamic submarine cable to form a vertical arc-shaped structure between the platform 100 and the seabed base 200, which "bulges outward in the middle and contracts towards the vertical central axis of the platform 100 and the seabed base 200 at both ends."
[0032] Through the aforementioned structural design, the trajectory adjustment module shapes a vertical arc shape, freeing the dynamic submarine cable from the offset requirements of the multi-point mooring platform 100. This allows it to perfectly match the structural characteristics and operational requirements of the single-point mooring floating platform 100's 360° omnidirectional rotation, significantly expanding the applicable scenarios for the dynamic submarine cable system. The vertical arc structure, without laterally protruding peaks and contracting towards the baseline at both ends, effectively increases the vertical clearance between the cable and the platform 100. Simultaneously, the vertically distributed arc structure prevents lateral displacement of the dynamic cable segment under crosscurrents, fundamentally eliminating the risk of interference with adjacent anchor chains and the risk of collision between the platform 100 and the cable during platform 100 rotation. This significantly reduces the probability of damage to the dynamic submarine cable and ensures the stable operation of the transmission system. The trajectory adjustment module actively regulates the force to form a regular vertical arc shape, effectively dispersing the axial tensile force borne by the cable body, avoiding localized stress concentration, and precisely ensuring the minimum bending radius of the cable, reducing bending fatigue damage, extending the service life of the dynamic submarine cable, and lowering offshore maintenance costs.
[0033] In one embodiment of the present invention, the trajectory adjustment module includes: a float unit 310, which is connected to a dynamic submarine cable. The float unit 310 is used to provide buoyancy to the dynamic submarine cable so that the dynamic submarine cable forms a vertical arc structure between the platform 100 and the seabed base 200.
[0034] In one embodiment of the present invention, the trajectory adjustment module further includes a gravity unit 320, which is distributed along the axial direction of the dynamic submarine cable and connected to the dynamic submarine cable. The gravity unit 320 is used to balance at least part of the buoyancy so as to cooperate with the float unit 310 to form a vertical arc structure between the platform 100 and the seabed base 200.
[0035] Furthermore, in one embodiment of the present invention, the float unit 310 includes: at least one float body connected to the dynamic submarine cable; the gravity unit 320 includes: at least one gravity block connected to the dynamic submarine cable.
[0036] In another embodiment of the present invention, there are multiple float units 310 and multiple gravity units 320; the number of float bodies included in each float unit 310 may be the same or different; the number of gravity blocks included in each gravity unit 320 may be the same or different.
[0037] Specifically, the trajectory adjustment module may consist of only float units 310. The float bodies within float units 310 can be made of a seawater-resistant shell material, filled with closed-cell foam, and fixed to the outer periphery of the dynamic submarine cable via a clamp structure. An anti-slip buffer structure can be installed on the inner side of the clamp to prevent damage to the cable sheath. A single-group centralized arrangement is suitable for short-distance submarine cables. For example, one group of float units 310 can be deployed in the middle of the cable, with the float bodies within the group arranged circumferentially in parallel to ensure even buoyancy on the cable. Alternatively, multiple groups can be arranged at intervals, suitable for medium- to long-distance submarine cables. For example, multiple groups of float units 310 can be deployed at equal intervals along the axis of the dynamic submarine cable, with the float bodies within each group arranged axially in series to improve overall buoyancy support. Buoyancy adjustment can be achieved by adjusting the number of float units 310 and the number of float bodies contained within each float unit 310; fine-tuning can also be done by changing the density of the filling material of the float bodies to adapt to the weight requirements of different sections of the submarine cable. This structure is more suitable for small single-point mooring platforms in shallow seas, with gentle currents and short submarine cables, and has the advantages of simple structure and convenient installation and maintenance.
[0038] like Figure 1 and Figure 2As shown, the trajectory adjustment module can also include float units 310 and gravity units 320. For example, with the midpoint of the submarine cable as the center of symmetry, a combination structure of float units 310 and gravity units 320 is arranged on both sides to ensure uniform contraction at both ends of the arc, adapting to the force symmetry requirements of the platform's 100-360° rotation. Alternatively, for scenarios where the intensity of the ocean current varies along the water depth gradient, the units are arranged according to the principle of "dense in the upper layer and sparse in the lower layer." By adjusting the number of float units 310 and gravity units 320, the number of float bodies in each float unit 310, and the number of gravity blocks in each gravity module, the forces in different ocean current areas are balanced. Alternatively, the float units 310 and gravity units 320 can be arranged alternately and staggered to avoid local force concentration and ensure the smooth arc of the submarine cable. By adjusting the number of float units 310, the number of float bodies in each group, or the spacing between float units 310, precise buoyancy matching can be achieved. Similarly, by adjusting the number of gravity units 320, the number of gravity blocks in each group, or the spacing between gravity units 320 and float units 310, some of the buoyancy of float units 310 can be balanced. This structure is more suitable for large single-point mooring platforms 100 in deep-sea environments with complex currents and long submarine cables. It can handle complex dynamic loads, maintain long-term arc-shaped stability, and effectively avoid collision and interference risks.
[0039] In one embodiment of the present invention, such as Figure 2 As shown, there are multiple dynamic submarine cables, one end of which is rotatably connected to the platform 100, and each dynamic submarine cable extends and passes through the seabed base 200. Each dynamic submarine cable is equipped with a trajectory adjustment module, and each dynamic submarine cable forms a vertical arc structure between the platform 100 and the seabed base 200. The multiple vertical arc structures are circumferentially distributed along the baseline between the platform 100 and the seabed base 200.
[0040] In other words, the number of dynamic submarine cables can be flexibly set according to the transmission requirements of the single-point mooring platform 100. One end of each dynamic submarine cable is rotatably connected to the platform 100.
[0041] Each dynamic submarine cable is equipped with an independent trajectory adjustment module. The structure of each trajectory adjustment module can be specifically calibrated according to the circumferential position of the submarine cable and the differences in the local environment, so that the vertical arc structure formed by each submarine cable can be flexibly set to be the same or different. For example, the configuration method can be selected according to the uniformity of the circumferential environment. If the current, water depth and other environmental conditions are uniform along the circumference, all trajectory adjustment modules can adopt the same scheme type, that is, only including float unit 310, or including float unit 310 and gravity unit 320, and the number of float unit 310, the number of float bodies, the number of gravity units 320, the number of gravity blocks and the layout interval are completely consistent, simplifying the design and installation process. If there are differences in the circumferential environment (such as stronger current on one side), the parameters of the trajectory adjustment module of the corresponding submarine cable can be adjusted specifically (such as increasing the number of float bodies to increase buoyancy, reducing the interval of gravity unit 320 to enhance shape control capability), so that the bulge height, curvature and other aspects of the arc are slightly different, accurately adapting to the local environment.
[0042] The system's adaptability, stability, and security are further enhanced through the circumferentially distributed layout of multiple dynamic submarine cables and the coordinated configuration of trajectory adjustment modules. The parallel operation of multiple dynamic submarine cables significantly increases the system's total transmission capacity, meeting the high-power power transmission and multi-channel signal transmission requirements of a large single-point mooring platform (100). Simultaneously, redundancy is achieved; if one cable fails, the remaining cables can continue to perform transmission tasks, preventing the entire transmission system from failing and significantly improving system reliability. The circumferential distribution of multiple submarine cables, combined with independent trajectory adjustment modules, allows for differentiated local adjustments to adapt to complex ocean currents and wave environments in the deep sea. Compared to a single-cable system, it has stronger anti-interference capabilities and can be extended to single-point mooring scenarios with deeper waters and more complex sea conditions, expanding the applicability of the technical solution.
[0043] In one embodiment of the present invention, the seabed base 200 includes: a base body 210, which is located directly below the platform 100 and fixed to the seabed; and a guide bend 220, which is embedded in the base body 210, and a dynamic submarine cable can extend and pass through the guide bend 220.
[0044] In one embodiment of the present invention, the radius of curvature of the guide bend 220 is greater than the minimum bending radius of the dynamic submarine cable.
[0045] Furthermore, the dynamic submarine cable is rotatably connected to the platform 100 via a rotating slip ring 400.
[0046] In another embodiment of the present invention, the dynamic submarine cable system further includes: a bending protection sleeve 500, which is disposed at the inlet end of the rotating slip ring 400 and the guide bend 220 and sleeved on the outer periphery of the dynamic submarine cable to limit the bending degree of the dynamic submarine cable; and a bending limiter 600, one end of which is connected to the outlet end of the guide bend 220, and the dynamic submarine cable is inserted into the bending limiter 600.
[0047] Specifically, such as Figures 1 to 4 As shown, one end of each dynamic submarine cable is rotatably connected to the platform 100 via an independent rotating slip ring 400. The rotating slip ring 400 is a multi-channel conductive slip ring; its fixed end is connected to the support of the platform 100, and its rotating end is electrically connected to the upper end of the dynamic submarine cable, allowing the platform 100 to rotate 360° without restriction while ensuring stable power and signal transmission. When the platform 100 rotates due to wind and waves, the rotating part of the rotating slip ring 400 moves relative to the fixed part, preventing the dynamic submarine cable system from rotating with the platform 100 and thus avoiding torque loads on the submarine cable.
[0048] The seabed base 200 includes a base body 210 and guide bends 220. The base body 210 is located directly below the platform 100 and is securely installed on the seabed using a fixing method adapted to the seabed geological conditions, ensuring the stability of the overall structure. Guide bends 220 are embedded within the base body 210, and their number matches the number of dynamic submarine cables. Each guide bend 220 ensures that after the dynamic submarine cable is led out from the platform 100, it extends smoothly along a predetermined path and passes through the guide bend 220, effectively preventing cross-entanglement between multiple submarine cables. The radius of curvature of the guide bend 220 is greater than the minimum bending radius of the dynamic submarine cable, specifically set to be no less than 1.5-2 times the minimum bending radius of the dynamic submarine cable, ensuring that the dynamic submarine cable remains within a safe bending range during installation, preventing sheath cracking and internal core damage due to excessive bending. The guide bends 220 are made of metal or high-strength composite materials, with smooth inner walls and a wear-resistant coating to reduce frictional loss when the dynamic submarine cable passes through.
[0049] Each dynamic submarine cable is equipped with an independent trajectory adjustment module. The structure of each trajectory adjustment module can be a combination of float unit 310 or float unit 310 and gravity unit 320. It needs to be calibrated according to the circumferential position of the submarine cable and the differences in the local environment so that the vertical arc structure formed by each submarine cable can be flexibly set to be the same or different, as long as the core meets the requirement of circumferential distribution along the baseline.
[0050] The dynamic submarine cable system also includes a bend protection sleeve 500 and a bend limiter 600, forming full-process bend protection for the dynamic submarine cable. For example, the bend protection sleeve 500 is fixedly connected to the rotating slip ring 400. The upper end of the dynamic submarine cable passes through the bend protection sleeve 500 and then enters the rotating slip ring 400 to limit the bending angle of the upper end of the submarine cable and prevent excessive bending. A bend protection sleeve 500 can also be installed on the seabed base 200. It can be in the shape of a positive trumpet or an inverted trumpet. The lower end of the dynamic submarine cable passes through the bend protection sleeve 500 and enters the interior of the base. It is used to guide the submarine cable into the base and limit its initial bending angle. A bend limiter 600 is installed on the lower side of the seabed base 200. One end of the limiter is fixedly connected to the outlet end of the guide bend 220. The dynamic submarine cable passes through the bend limiter 600. The bending limiter 600 is used to constrain the bending range of the lower end of the submarine cable, prevent structural damage caused by dynamic loads at the seabed end, resist irregular swaying of the submarine cable caused by ocean current impact, prevent hard friction between the submarine cable and the outlet end of the guide bend 220, and avoid damage caused by long-term bending fatigue.
[0051] In another embodiment of the present invention, an offshore wind power generation system is also provided, including the dynamic submarine cable system described above.
[0052] Furthermore, the offshore wind power generation system provided by this invention, since it includes the dynamic submarine cable system as described above, also possesses the advantages described above.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A dynamic submarine cable system, characterized by The utility model relates to a kind of dynamic submarine cable track adjustment module, including: Platform (100); Seabed base (200), the seabed base (200) is arranged below the platform (100), datum line is formed between the seabed base (200) and the platform (100); Dynamic submarine cable, one end of the dynamic submarine cable is rotatably connected with the platform (100), and the other end of the dynamic submarine cable extends and passes through the seabed base (200); Trajectory adjustment module, the trajectory adjustment module is connected with the dynamic submarine cable, and is located between the platform (100) and the seabed base (200), and the trajectory adjustment module is used to adjust the stress state of the dynamic submarine cable, so that the dynamic submarine cable forms vertical arc structure between the platform (100) and the seabed base (200) in the direction of the middle part rising away from the datum line, both ends shrink in the direction of approaching the datum line.
2. A dynamic power cable system according to claim 1, characterized in that The trajectory adjustment module includes: Float unit (310), the float unit (310) is connected to the dynamic submarine cable, and the float unit (310) is used to provide buoyancy for the dynamic submarine cable, so that the dynamic submarine cable forms the vertical arc structure between the platform (100) and the seabed base (200).
3. A dynamic power cable system according to claim 2, characterised in that, The trajectory adjustment module further includes: Gravity unit (320), the gravity unit (320) is distributed along the axis direction of the dynamic submarine cable and connected to the dynamic submarine cable with the float unit (310), and the gravity unit (320) is used to balance at least part of the buoyancy, so that the dynamic submarine cable forms the vertical arc structure between the platform (100) and the seabed base (200) with the float unit (310) in mutual coordination.
4. A dynamic power cable system according to claim 3, characterised in that The float unit (310) includes: At least one float body, the float body is connected to the dynamic submarine cable; The gravity unit (320) includes: At least one gravity block, the gravity block is connected to the dynamic submarine cable.
5. A dynamic power cable system according to claim 4, characterised in that, The number of the float unit (310) is multiple, and the number of the gravity unit (320) is multiple; The number of the float body contained in each float unit (310) is the same or different; The number of the gravity block contained in each gravity unit (320) is the same or different.
6. A dynamic power cable system according to claim 1, characterised in that The number of the dynamic submarine cable is multiple, one end of each dynamic submarine cable is rotatably connected with the platform (100), and each dynamic submarine cable extends and passes through the seabed base (200); The trajectory adjustment module is correspondingly provided on each dynamic submarine cable, each dynamic submarine cable forms the vertical arc structure between the platform (100) and the seabed base (200) respectively, and multiple vertical arc structures are distributed in the circumferential direction along the datum line between the platform (100) and the seabed base (200).
7. A dynamic power cable system according to any of claims 1 to 6, c h a r a c t e r i z e d in that The seabed base (200) includes: Base body (210), the base body (210) is located directly below the platform (100) and is fixed to seabed. A guide elbow (220) is embedded into the base body (210), and the dynamic submarine cable can extend through the guide elbow (220).
8. A dynamic power cable system according to claim 7, characterised in that, The guide elbow (220) has a curvature radius greater than a minimum bending radius of the dynamic submarine cable.
9. A dynamic power cable system according to claim 8, characterised in that, The dynamic submarine cable system further comprises: A rotating slip ring (400) through which the dynamic submarine cable is rotatably connected to the platform (100).
10. A dynamic power cable system according to claim 9, characterised in that, The dynamic submarine cable system further comprises: A bending protection sleeve (500) arranged at an inlet end of the rotating slip ring (400) and the guide elbow (220) and sleeved on an outer periphery of the dynamic submarine cable to limit a bending degree of the dynamic submarine cable; A bending limiter (600) having one end connected to an outlet end of the guide elbow (220) and through which the dynamic submarine cable is arranged.