Dynamic Cable Protection System and Wind Power Generation System

Abstract

The present application provides a dynamic cable protection system and a wind power generation system, the dynamic cable protection system comprising: a dynamic cable installed in an aquatic environment, used for transmitting signals or electric energy between an above-water facility and an underwater facility; a plurality of first buoyancy devices spaced apart from the dynamic cable; a plurality of second buoyancy devices floating on the water surface; and a plurality of first connection devices, the second buoyancy devices being connected to the dynamic cable by the first connection devices, and the connection positions of the first connection devices and the dynamic cable being located between two adjacent first buoyancy devices, the second buoyancy devices being used to limit the lowest position of the wave trough portion of the dynamic cable, and the wave trough portion being connected between two adjacent wave crest portions. The present application is applied to prevent the dynamic cable from being bent and contacting the seabed surface, which affects the use and life of the dynamic cable.

Description

Technical Field

[0001] This application relates to the field of offshore wind power generation technology, and more particularly to a dynamic cable protection system and a wind power generation system.

Background Art

[0002] As a special power and signal transmission medium, dynamic cables play an indispensable role in ocean industry power transmission and communication control signal transmission. For example, in floating wind power generation, a dynamic cable is required to transmit the generated electrical energy from the wind power plant. In offshore oil and gas development, a dynamic cable is required to supply power to platforms and equipment. In new offshore energy generation, underwater observation, scientific research, etc., a dynamic cable is required to transmit electrical energy.

[0003] Dynamic cables float in water and are subject to the combined action of multiple factors such as ocean hydrology and meteorology, resulting in inevitable large displacements, bending, and twisting. In addition, when a large number of marine organisms in seawater such as shells and algae accumulate on the dynamic cable, the linear shape of the dynamic cable is degraded. When the bending of the dynamic cable is too large, the floating part in water moves downward and comes into contact with the seabed surface. At this time, when the dynamic cable generates movement and torsional movement, it repeatedly rubs against the seabed surface, which has a serious impact on the use and lifespan of the dynamic cable.

[0004] Therefore, in order to avoid the linear shape of the dynamic cable being suppressed low and coming into contact with the seabed surface, which affects the use and lifespan of the dynamic cable, a dynamic cable protection system and a wind power generation system are urgently needed.

Summary of the Invention

Problems to be Solved by the Invention

[0005] This application provides a dynamic cable protection system and a wind power generation system for at least solving the technical problem that the linear shape of the dynamic cable is kept low and contacts the seabed surface, which affects the use and service life of the dynamic cable.

Means for Solving the Problem

[0006] To achieve the above object, this application provides a dynamic cable protection system, and the dynamic cable protection system includes: A dynamic cable used for transmitting signals or electrical energy between an above-water facility and an underwater facility, which is installed in an aquatic environment; A plurality of first buoyancy devices arranged at intervals along the length direction of the dynamic cable; A plurality of second buoyancy devices arranged to float on the water surface; And a plurality of first connection devices. The second buoyancy device is connected to the dynamic cable by the first connection device, and the connection position between the first connection device and the dynamic cable is located between two adjacent first buoyancy devices. The dynamic cable is arranged such that, driven by the first buoyancy device and the second buoyancy device, it has a plurality of wave crest portions with the first buoyancy device at the wave crest position and a plurality of wave trough portions with the connection position between the first connection device and the dynamic cable at the wave trough position. The second buoyancy device is used to limit the lowest position of the wave trough portion connected between two adjacent wave crest portions.

[0007] In the dynamic cable protection system provided by the present application, a plurality of the first buoyancy devices are alternately arranged on the dynamic cable, the second buoyancy device floats on the water surface, and the second buoyancy device is connected to the dynamic cable by the first connecting device. The dynamic cable assumes a certain linear shape in water under the buoyancy action of the first buoyancy device and the second buoyancy device itself. Due to the tensile action of the second buoyancy device and the first connecting device on the dynamic cable, when the dynamic cable is moved and torqued due to excessive downward bending caused by the attachment of marine organisms and contact with the seabed surface, the dynamic cable repeatedly rubs against the seabed surface, which will inevitably affect the use and service life of the dynamic cable. In particular, in the case of a dynamic cable in a shallow sea area, the reliability of long-term use of the dynamic cable is improved.

[0008] In one possible embodiment, the second buoyancy device includes an upper buoyancy member and a lower buoyancy member. The upper buoyancy member and the lower buoyancy member are connected to each other in a sealed manner by a fixing member, and the average density of the upper buoyancy member is less than or equal to the average density of the lower buoyancy member.

[0009] In one possible embodiment, the above-described dynamic cable protection system further includes a counterweight device. The counterweight device is connected to the dynamic cable, and the counterweight device is installed at an end of the dynamic cable close to the above-water facility.

[0010] In one possible embodiment, the above-described dynamic cable protection system further includes a position limiting device. The position limiting device is connected to the dynamic cable via a mooring device. The connection position between the mooring device and the dynamic cable is located at an end of the dynamic cable close to the underwater facility, and the connection position between the mooring device and the dynamic cable is further connected to the second buoyancy device via the first connecting device.

[0011] In one possible embodiment, the position limiting device is fixed to the bottom of the water or suspended in the water, and the position limiting device pulls the dynamic cable in a direction approaching the bottom of the water.

[0012] In one possible embodiment, the dynamic cable is provided with a protection device that is at least located in a part of the region between the connection position of the dynamic cable and the underwater equipment and the connection position of the mooring device and the dynamic cable.

[0013] In one possible embodiment, the above-mentioned dynamic cable protection system further includes a second connection device, and two adjacent second buoyancy devices are connected by the second connection device.

[0014] In one possible embodiment, the surface of the dynamic cable is covered with a biological inhibitor, or the surface of the dynamic cable is covered with a sheath containing a biological inhibitor.

[0015] In one possible embodiment, the first connection device is a rope or an elastic cord, and / or the second connection device is a rope or an elastic cord.

[0016] The present application further provides a wind power generation system including an above-water facility, an underwater facility, a static cable, and the above-mentioned dynamic cable protection system. The above-water facility is a buoyancy power generation device, the underwater facility is a fixing device, one end of the dynamic cable of the dynamic cable protection system is electrically connected to the buoyancy power generation device, and the other end of the dynamic cable is connected to the static cable through the fixing device.

[0017] In one possible embodiment, a first bending limiting device is provided at the position where the dynamic cable is electrically connected to the buoyancy power generation device, and a second bending limiting device is provided at the connection position between the dynamic cable and the fixing device.

[0018] In one possible embodiment, the buoyancy power generation device and the adjacent second buoyancy device are connected by a second connecting device.

Advantages of the Invention

[0019] In the dynamic cable protection system and the wind power generation system provided by the present application, by making the dynamic cable exhibit shapes such as the shapes of a plurality of wave crest portions and a plurality of wave trough portions that are alternately continuous in water, for example, bimodal shape, multimodal shape, etc., the dynamic cable can mitigate the impact force caused by the generated movement, bending, and torsional movement. Capability It has this advantage and is beneficial for improving the service life of the dynamic cable.

[0020] In the wind power generation system provided by the present application, by adopting a design in which the linear shape of the dynamic cable in water is multimodal, it is ensured that both the wave crest portion and the wave trough portion of the linear shape of the dynamic cable are far away from the seabed, and it is possible to avoid touching the seabed, and it has the ability to withstand severe rolling as a floating device.

[0021] In the dynamic cable protection system and the wind power generation system provided by the present application, the second connecting device is used to connect two adjacent second buoyancy devices, whereby a plurality of the second buoyancy devices are integrally connected, which helps to restrict the floating range of the second buoyancy device on the water surface and helps to restrict the linear shape of the dynamic cable.

[0022] In the dynamic cable protection system and the wind power generation system provided by the present application, the surface of the dynamic cable is covered with a biological inhibitor, or the surface of the dynamic cable is covered with a sheath containing a biological inhibitor, so as to avoid the attachment of marine organisms to the dynamic cable and the dynamic cable being suppressed low. By combining the physical means of providing the second buoyancy device and the chemical means of providing a biological inhibitor, it effectively prevents the dynamic cable from being suppressed low and touching the seabed, and the service life of the dynamic cable is improved.

[0023] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the dynamic cable protection system and the wind power generation system provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be described in more detail in specific embodiments.

Brief Description of the Drawings

[0024] To more clearly illustrate the embodiments of the present application or the prior art solutions, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below. Of course, the drawings described below are some embodiments of the present application, and those skilled in the art can conceive of other drawings based on these drawings without creative effort.

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Embodiments for Carrying Out the Invention

[0025] To make the object, technical solution and advantages of the present application clearer, hereinafter, with reference to the drawings related to the present application, the technical solution will be described clearly and completely. Naturally, the described embodiments are only a part of the embodiments of the present application, not all of them. Those skilled in the art can obtain all other embodiments without creative labor based on the embodiments in the present application, and all of them belong to the protection scope of the present application.

[0026] Dynamic cables, especially those in shallow water environments, are subject to the action of multiple factors such as waves, ocean currents, and platforms during use, and are prone to intense shaking. However, if the dynamic cable bends downward too much and contacts the seabed surface, it is likely to lead to structural damage to the dynamic cable, affecting the use and lifespan of the dynamic cable. According to research, maintaining the dynamic cable in a certain underwater line shape has the risk that the dynamic cable may become uncontrollable in extreme situations, and it helps to avoid failure. However, since the dynamic cable is buried in water and a large amount of marine organisms accumulate on its surface, the outer diameter and weight of the dynamic cable increase, making it prone to local corrosion of the dynamic cable and changes in the underwater line shape, resulting in the dynamic cable touching the seabed and causing damage.

[0027] In view of the above background, in this application, it is equipped with a plurality of first buoyancy devices and a plurality of second buoyancy devices. The second buoyancy device floats on the water surface. The dynamic cable assumes a certain linear shape in water due to the buoyancy action of the first buoyancy device and the second buoyancy device itself. Due to the tensile action of the second buoyancy device and the first connection device on the dynamic cable, it is possible to avoid the situation where the downward bending of the dynamic cable due to the adhesion of marine organisms is too large and it contacts the seabed surface.

[0028] Hereinafter, the dynamic cable protection system and the wind power generation system provided by the embodiments of this application will be described with reference to the drawings.

[0029] As shown in FIG. 1, the present application provides a dynamic cable protection system including a dynamic cable 10, a plurality of first buoyancy devices 20, a plurality of second buoyancy devices 30, and a plurality of first connection devices 40. The dynamic cable 10 is installed in an aquatic environment and is used to transmit signals or electrical energy between an above-water facility and an underwater facility. The plurality of first buoyancy devices 20 are arranged at intervals along the length direction of the dynamic cable 10. The second buoyancy device 30 is arranged to float on the water surface. The second buoyancy device 30 is connected to the dynamic cable 10 by the first connection device 40, and the connection position between the first connection device 40 and the dynamic cable 10 is located between two adjacent first buoyancy devices 20. The dynamic cable 10 is arranged to present a plurality of wave crest portions with the first buoyancy devices 20 at the wave crest positions and a plurality of wave trough portions with the connection positions between the first connection devices 40 and the dynamic cable 10 at the wave trough positions under the drive of the first buoyancy devices 20 and the second buoyancy devices 30. The second buoyancy device 30 is used to limit the lowest position of the wave trough portion connected between two adjacent wave crest portions.

[0030] In the dynamic cable protection system provided by the present application, a plurality of first buoyancy devices 20 are alternately arranged on the dynamic cable 10, the second buoyancy device 30 floats on the water surface, and the second buoyancy device 30 is connected to the dynamic cable 10 by a first connecting device 40. The dynamic cable 10 assumes a certain linear shape in water due to the buoyancy effects of the first buoyancy device 20 and the second buoyancy device 30 itself. Due to the pulling action of the second buoyancy device 30 and the first connecting device 40 on the dynamic cable 10, the downward bending of the dynamic cable 10 caused by the attachment of marine organisms is too large, resulting in contact with the seabed surface 90. When moving the dynamic cable 10 and applying torque, the dynamic cable 10 repeatedly rubs against the seabed surface 90, which inevitably affects the use and lifespan of the dynamic cable 10. In particular, in the case of the dynamic cable 10 in shallow waters, the reliability of the long-term use of the dynamic cable 10 is improved.

[0031] In the dynamic cable protection system provided by the present application, by making the dynamic cable 10 assume a shape with a plurality of wave crest portions and a plurality of wave trough portions that are alternately continuous in water, such as a bimodal shape, a multimodal shape, etc., the dynamic cable 10 has the effect of mitigating the impact force caused by the movement, bending, and torsional movement of the dynamic cable 10, which is advantageous for improving the service life of the dynamic cable 10.

[0032] The second buoyancy device 30 is connected to the dynamic cable 10 by a first connecting device 40, and the connection position between the first connecting device 40 and the dynamic cable 10 is located between two adjacent first buoyancy devices 20. By making the connection position between the first connecting device 40 and the dynamic cable 10 be at the position of the wave trough, the lowest position of the wave trough portion is restricted by the upward pulling action of the second buoyancy device 30 and the first connecting device 40, excessive bending of the dynamic cable 10 can be avoided, and the overall floating of the dynamic cable 10 can be avoided. As a result, the service life of the dynamic cable 10 can be improved.

[0033] In one possible embodiment, as shown in FIGS. 2 and 3, the second buoyancy device 30 includes an upper buoyancy member 31 and a lower buoyancy member 32. The upper buoyancy member 31 and the lower buoyancy member 32 are connected to each other by a fixing member 33 so as to be sealed, and the average density of the upper buoyancy member 31 is less than or equal to the average density of the lower buoyancy member 32. The fixing member 33 maintains good sealing performance at the connection position between the upper buoyancy member 31 and the lower buoyancy member 32. With such a structure, it is ensured that the buoyancy of the second buoyancy device 30 is always greater than the design load-bearing capacity, the upper buoyancy member 31 can provide sufficient buoyancy, and the safety during the use of the entire dynamic cable protection system is greatly improved.

[0034] In one possible embodiment, the upper buoyancy member 31 can be an airbag having a shape such as a ball shape or an ellipsoidal shape. The upper buoyancy member 31 can have a single-layer structure, and is not limited to being filled with air or helium gas inside, and other gases can also be filled. After the upper buoyancy member 31 is filled with a gas at a certain pressure, it has a certain rigidity, can withstand the impact caused by waves, and ensures the service life.

[0035] In one possible embodiment, the upper buoyancy member 31 may use a two-layer structure in which the inner layer is filled with gas and the outer layer is filled with water. Thereby, while the airtightness of the upper buoyancy member 31 is kept good, the pressure is maintained, and it is avoided that the second buoyancy device 30 floats into the air and affects the use.

[0036] The upper buoyancy member 31 is not limited to being made of a soft silicone material or a rubber material, and may be made of other soft materials. As the lower buoyancy member 32, a buoyancy block processed by using a commonly used buoyancy material can be adopted. The lower buoyancy member 32 can be made of one or more materials such as polyurethane, polyethylene, and glass beads, but is not limited thereto.

[0037] It is easily understood that the average density of the upper buoyancy member 31 means the average value of the density of the material of the upper buoyancy member 31 itself and the density of the medium filled inside the upper buoyancy member 31. On the other hand, the lower buoyancy member 32 also has a non-uniform density due to reasons such as non-uniformity of the material, and the average density of the lower buoyancy member 32 means the average value of the density of the material used for the lower buoyancy member 32.

[0038] In one possible embodiment, the upper buoyancy member 31 covers the upper end of the lower buoyancy member 32, the fixing member 33 can be a fitting ring, the upper buoyancy member 31 passes through the fitting ring, and the fitting ring is covered on the upper end of the lower buoyancy member 32 and connected so as to be fixed to the lower buoyancy member 32. By doing so, the upper buoyancy member 31 is firmly pressed against the lower buoyancy member 32 via the fixing member 33, ensuring to maintain good sealing performance of the upper buoyancy member 31. In order to stably connect the upper buoyancy member 31 and the lower buoyancy member 32 and maintain good sealing performance, a sealing member may be provided at the connection position where the upper buoyancy member 31 covers the lower buoyancy member 32, or it is easily understood that an adhesive such as glue may be applied at the connection position between the upper buoyancy member 31 and the lower buoyancy member 32.

[0039] In another possible embodiment, the fixing member 33 can be a screw, and the edge of the upper buoyancy member 31 and the lower buoyancy member 32 are connected by screw fastening. Also, in order to ensure that the connection between the upper buoyancy member 31 and the lower buoyancy member 32 does not affect the sealing performance of the upper buoyancy member 31, an adhesive such as glue may be applied at the connection position by the fixing member 33, or a sealing member may be provided at the connection position by the fixing member 33.

[0040] In another possible embodiment, the upper buoyancy member 31 can be an annular one filled with gas inside, the entire inner diameter of the upper buoyancy member 31 covers the outer periphery of the lower buoyancy member 32, and a baffle plate for preventing the upper buoyancy member 31 from coming off is provided at the top of the lower buoyancy member 32. Also, the upper buoyancy member 31 and the lower buoyancy member 32 may be fastened and connected by a fixing member 33 in the form of a screw.

[0041] The upper buoyancy member 31 has a valve 311, and gas is filled into the upper buoyancy member 31 via the valve 311. It is easily understood that the valve 311 maintains a sealing effect and prevents gas from leaking from the valve 311.

[0042] Connecting lugs can be provided at both the bottom and both sides of the lower buoyancy member 32. The connecting lugs may be integrally formed with the lower buoyancy member 32. Through holes are provided in the connecting lugs to facilitate fixedly connecting the lower buoyancy member 32 to the first connecting device 40 and fixedly connecting the lower buoyancy member 32 to the second connecting device 50.

[0043] As shown in FIGS. 1 and 3, during normal operation, the lower buoyancy member 32 in the second buoyancy device 30 is immersed in water, and the upper buoyancy member 31 remains above the water surface. However, since the average density of the buoyancy material of the lower buoyancy member 32 itself is lower than the density of seawater, the lower buoyancy member 32 can provide appropriate net buoyancy to meet the usage requirements for the entire dynamic cable protection system.

[0044] Since the average density of the upper buoyancy member 31 is less than or equal to the average density of the lower buoyancy member 32, if the tensile force transmitted from the dynamic cable 10 to the second buoyancy device 30 exceeds the design value that the second buoyancy device 30 can withstand, the portion of the dynamic cable 10 where the second buoyancy device 30 is mounted tends to be pulled downward and submerged underwater. At this time, the lower buoyancy member 32 will continue to move downward until it is completely submerged in water. If sufficient net buoyancy still cannot be provided, the upper buoyancy member 31 will then be pulled along with it and move underwater. Eventually, part of the volume of the upper buoyancy member 31 will be submerged. Since the upper buoyancy member 31 is filled with gas and its average density is much lower than the average density of seawater, the upper buoyancy member 31 can prevent the portion of the dynamic cable 10 where the second buoyancy device 30 is mounted from being pulled deeper, and can provide sufficient net buoyancy to ensure the stability of the entire dynamic cable protection system during use.

[0045] When the tensile force transmitted from the dynamic cable 10 to the second buoyancy device 30 decreases, the upper buoyancy member 31 will float and gradually emerge above the water surface. The net buoyancy provided by the second buoyancy device 30 will decrease until the overall load balance is achieved. Thereby, the stability and balance of the entire dynamic cable protection system during use are ensured, and it is possible to effectively cope with a harsh natural environment.

[0046] In one possible embodiment, the second buoyancy device 30 is connected to the first connection device 40 on a one-to-one basis.

[0047] In one possible embodiment, as shown in FIG. 1, in order to ensure the stable connection effect between the first buoyancy device 20 and the dynamic cable 10, the dynamic cable 10 provided to fit the first buoyancy device 20 is arranged to float in water, and the dynamic cable 10 can be fastened and connected to the outer periphery thereof in order to form a plurality of wave crest portions with the first buoyancy device 20 located at the wave crest positions.

[0048] In one possible embodiment, the first buoyancy device 20 can be a buoyancy block connected to the outer periphery of the dynamic cable 10.

[0049] In one possible embodiment, as shown in FIGS. 4 and 5, the first buoyancy device 20 can be a buoyancy cylinder. As shown in FIGS. 1 and 8, there is a through hole 21 in the first buoyancy device 20. The first buoyancy device 20 is provided so as to cover the outer periphery of the dynamic cable 10, and the dynamic cable 10 passes through the through hole 21.

[0050] In one possible embodiment, as shown in FIGS. 6 and 7, there is a through hole 21 in the first buoyancy device 20. In the through hole 21, a clamping member 24 that can be fixed by screws in the through hole 21 is provided. There is a filling member 25 in the inner wall of the first buoyancy device 20. An annular groove 22 with a binding band 23 provided therein is provided on the outer periphery of the first buoyancy device 20. The first buoyancy device 20 is stably fixed to the outer periphery of the dynamic cable 10 by the binding band 23 and the clamping member 24. The clamping member 24 can be a clamp, and the filling member 25 can be a buoyancy block.

[0051] In one possible embodiment, the first buoyancy device 20 can also be a block structure integrally formed with the outer periphery of the dynamic cable 10. For example, carbon fiber hollow spheres or hollow glass spheres are poured into a mold together with an adhesive material and formed by natural cooling.

[0052] In one possible embodiment, the plurality of first buoyancy devices 20 may be alternately arranged on the dynamic cable 10 along the longitudinal direction of the dynamic cable 10 itself. For example, the plurality of first buoyancy devices 20 may be uniformly arranged along the longitudinal direction of the dynamic cable 10, or the plurality of first buoyancy devices 20 may be grouped as one group, and the first buoyancy devices 20 of each group are uniformly arranged along the longitudinal direction of the dynamic cable 10, and the first buoyancy devices 20 in each group are arranged sequentially. Since the number of the first buoyancy devices 20 can be flexibly set according to the needs during use, it is not particularly limited here.

[0053] In one possible embodiment, the second buoyancy device 30 floats on the water surface. The second buoyancy device 30 may be, for example, a buoy ball made of foamed polyethylene, foamed polypropylene, or foamed polyurethane material, or the second buoyancy device 30 may have a hollow interior filled with gas.

[0054] In one possible embodiment, the first connection device 40 may be connected to the dynamic cable 10 by a first intermediate device 41. The first intermediate device 41 is fixedly connected to one end of the first connection device 40. The first intermediate device 41 may be a connection sleeve covering the circumferential direction of the dynamic cable 10, or the first intermediate device 41 may be a clamping member clamped in the circumferential direction of the dynamic cable 10 to ensure that the first connection device 40 is stably connected to the dynamic cable 10 through the first intermediate device 41 and prevent the connection between the dynamic cable 10 and the first connection device 40 from being damaged by excessive impact.

[0055] In one possible embodiment, the first intermediate device 41 can use a wear-resistant non-metallic material to protect the dynamic cable 10 from damage due to wear when the dynamic cable 10 contacts the seabed surface 90.

[0056] In one possible embodiment, the dynamic cable protection system further comprises a counterweight device 60, the counterweight device 60 is connected to the dynamic cable 10, and the counterweight device 60 is installed at the end of the dynamic cable 10 close to the water facility.

[0057] It is easily understood that the counterweight device 60 has a certain weight to apply a downward gravity to the dynamic cable 10, and the end of the dynamic cable 10 close to the water facility can be pushed downward into the water by the weight of the counterweight device 60, so as to prevent the dynamic cable from floating on the water surface.

[0058] In one possible embodiment, as shown in FIGS. 1 and 9, the counterweight device 60 comprises at least two clamp bands 61 meshed with each other, an internal cavity 63 is formed inside the counterweight device 60, the clamp bands 61 clamp the outer periphery of the dynamic cable 10, and the two adjacent clamp bands 61 are connected by a fastening member 62, so that the clamp bands 61 are stably fixed to the dynamic cable 10, and a counterweight is added to the dynamic cable 10. The clamp band 61 has a certain wall thickness to achieve the effect of increasing the counterweight.

[0059] In one possible embodiment, the clamp band 61 has a connecting portion 611 with a connecting hole. When the two clamp bands 61 are meshed with each other, the connecting portions 611 of the two clamp bands 61 abut against each other, so that the fastening member 62 passes through the connecting hole to stably connect the two clamp bands 61.

[0060] In one possible embodiment, the fastening member 62 can be a bolt, a stud, a screw, etc. to facilitate the installation and removal of the counterweight device 60.

[0061] In one possible embodiment, as shown in FIG. 1, the dynamic cable protection system further includes a position limiting device 70, which is fixed to the bottom of the water or suspended in the water. The position limiting device 70 is connected to the dynamic cable 10 via a mooring device 71. The connection position between the mooring device 71 and the dynamic cable 10 is located near the end of the dynamic cable 10 close to the underwater equipment, and the connection position between the mooring device 71 and the dynamic cable 10 is further connected to a second buoyancy device 30 by a first connection device 40. With such a structure, the connection position between the mooring device 71 and the dynamic cable 10 can be restricted so that the dynamic cable 10 does not bend downward too much and touch the seabed, and it is also possible to prevent the dynamic cable 10 from being lifted upward excessively and the end connected to the underwater equipment of the dynamic cable 10 from being bent excessively.

[0062] In one possible embodiment, the position limiting device 70 is fixed to the bottom of the water or suspended in the water. The position limiting device 70 pulls the dynamic cable 10 in the direction approaching the bottom of the water, and the position limiting device 70 stably connects the dynamic cable 10 and the underwater equipment via the mooring device 71.

[0063] In one possible embodiment, the mooring device 71 may be connected to the dynamic cable 10 via a second intermediate device 72. Of course, both the mooring device 71 and the first connection device 40 may be connected to the dynamic cable 10 via the second intermediate device 72. The second intermediate device 72 may be provided to fit around the outer periphery of the dynamic cable 10 or be clamped to the outer periphery of the dynamic cable 10 in order to avoid being damaged by an excessive impact between the dynamic cable 10 and the mooring device 71.

[0064] In one possible embodiment, the dynamic cable 10 is provided with a protection device 13 that is at least located in a part of the region between the connection position of the dynamic cable 10 and the underwater facility and the connection position of the mooring device 71 and the dynamic cable 10. Considering that a part of the region between the connection position of the dynamic cable 10 and the underwater facility and the connection position of the mooring device 71 and the dynamic cable 10 may come into contact with the seabed surface 90 when the dynamic cable 10 moves, a protection device 13 for protecting the dynamic cable 10 is provided in a part of the region.

[0065] In one possible embodiment, the protection device 13 can be an abrasion-resistant protection sleeve to enhance the abrasion resistance of a part of the region of the dynamic cable 10.

[0066] In one possible embodiment, the mooring device 71 can be an elastic cable, a spring, a non-elastic rope, etc.

[0067] In one possible embodiment, any two adjacent second buoyancy devices 30 are both in a freely floating state, and the two adjacent second buoyancy devices 30 are not connected.

[0068] In one possible embodiment, the dynamic cable protection system further includes a second connection device 50, and the second connection device 50 is connected between several adjacent second buoyancy devices 30. The second connection device 50 is used to connect two adjacent second buoyancy devices 30 in order to integrally connect a plurality of second buoyancy devices 30 and help to restrict the floating range of the second buoyancy devices 30 on the water surface.

[0069] In order to achieve the effect of restricting the floating range of the second buoyancy device 30 and to assist in the linear restraint of the dynamic cable 10, it is easily understood that the second connection device 50 may connect two or more adjacent second buoyancy devices 30 in series as one group, or the second connection device 50 may connect all the second buoyancy devices 30 in series.

[0070] In one possible embodiment, the surface of the dynamic cable 10 is covered with a biological inhibitor, or the surface of the dynamic cable 10 is covered with a sheath containing a biological inhibitor. The sheath wraps the dynamic cable 10 therein and is used to prevent marine organisms from adhering to the dynamic cable 10 and keeping the dynamic cable low.

[0071] In one possible embodiment, the surface of the dynamic cable 10 can be covered with a biological inhibitor by spraying.

[0072] In one possible embodiment, the first connection device 40 is a rope or an elastic cable. When the water area environment where the dynamic cable protection system provided by the present application is arranged changes and the dynamic cable 10 drifts widely or shakes violently, the first connection device 40 can limit the distance between the water surfaces at the trough part of the wave of the dynamic cable 10 from becoming too large, so as to ensure a stable catenary for the dynamic cable 10. As a result, it is avoided that the dynamic cable 10 touches the seabed and causes damage under the action of waves, ocean currents, or other factors during the operation state, and the service life of the dynamic cable 10 is ensured.

[0073] In one possible embodiment, the second connection device 50 is a rope or an elastic cable.

[0074] The dynamic cable protection system provided by this embodiment combines the physical means of providing a second buoyancy device 30 to pull the dynamic cable 10 and the chemical means of covering the surface of the dynamic cable 10 with a biological inhibitor, so that the dynamic cable 10 has the effect of preferably preventing bending downward and touching the seabed, and the service life of the dynamic cable 10 is improved.

[0075] This application further provides a wind power generation system including an above-water facility, an underwater facility, a static cable, and the above dynamic cable protection system. The above-water facility is a floating body type wind power generator, the underwater facility is a fixing device 82, one end of the dynamic cable 10 of the dynamic cable protection system is electrically connected to the floating body type wind power generator, and the other end of the dynamic cable 10 is connected to the static cable through the fixing device 82.

[0076] In one possible embodiment, the floating body type wind power generator can be used as the floating body type wind power generator.

[0077] In one possible embodiment, the fixing device 82 can be a connector for connecting the dynamic cable 10 to the static cable.

[0078] In one possible embodiment, as shown in FIGS. 1 and 10, a first bending limiting device 11 is provided at the position where the dynamic cable 10 is electrically connected to the floating body type wind power generator, and a second bending limiting device 12 is provided at the connection position between the dynamic cable 10 and the fixing device 82.

[0079] As shown in FIGS. 1 and 11, the first bending limiting device 11 can be a rigid tube sleeve, the second bending limiting device 12 can have the same structure as the first bending limiting device 11, and an anchor fixing device 15 for fixing the first bending limiting device 11 and the second bending limiting device 12 is further connected to the outer periphery of the dynamic cable 10. The first bending limiting device 11 is connected corresponding to the anchor fixing device 15, the second bending limiting device 12 is connected corresponding to the anchor fixing device 15, and the first bending limiting device 11 and the second bending limiting device 12 are used to avoid bending deformation at the position where the dynamic cable 10 is electrically connected to the buoyancy power generation device 81, and to avoid damage caused by bending deformation at the connection position between the dynamic cable 10 and the fixing device 82.

[0080] In one possible embodiment, the buoyancy power generation device 81 and the adjacent second buoyancy device 30 are connected by a second connecting device 50. With such a structure, the movement range of the second buoyancy device 30 can be limited, and it is possible to avoid the linear shape of the dynamic cable 10 changing too much due to the excessive movement range of the second buoyancy device 30, or even the tension on the fixing device 82 becoming too severe, which is advantageous for maintaining the linear shape of the dynamic cable 10 in a stable state.

[0081] In the wind power generation system provided by the present application, by adopting a design in which the linear shape of the dynamic cable 10 in water is multi-peak-shaped, it can be ensured that both the peak part and the valley part of the linear shape of the dynamic cable 10 are far from the seabed, and it has the ability to withstand severe rolling as a floating device.

[0082] When the dynamic cable 10 is subjected to extreme waves, ocean current loads, or violent movements of the buoyant power generation device 81, and its linear shape changes significantly, for example, when the trough portion of the dynamic cable 10 moves in a direction approaching the seabed surface 90, in order to prevent the dynamic cable 10 from touching the seabed, the first connection device 40 is immediately tightened and the load is transmitted to the second buoyancy device 30. At the same time, the second buoyancy device 30 pulls the dynamically cable 10 that is pressed down low by its own sufficiently large buoyancy action, avoiding the dynamic cable 10 from being further pressed down and moving downward, thereby realizing the effect of preventing the dynamic cable 10 from touching the seabed.

[0083] In the wind power generation system provided by the present application, by making the dynamic cable 10 exhibit the shape of a plurality of wave crest portions and a plurality of wave trough portions alternately connected in water, both the linear wave crest portion and the wave trough portion of the dynamic cable 10 are far away from the seabed, and it can be ensured that the dynamic cable 10 has the ability to withstand violent rolling of the buoyant power generation device 81.

[0084] The wind power generation system provided by the present application can be applied to ocean industrial power transmission. The buoyant power generation device 81 can be used to generate electricity using wind energy and transmit electrical energy underwater through the dynamic cable 10.

[0085] In the description of the present application, the orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "top end", "bottom end", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "axial direction", "circumferential direction", etc. used are based on the orientation or positional relationship shown in the drawings. These terms are only intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the indicated position or component must be oriented in a specific direction and implemented in a specific configuration and operation. Therefore, it should be understood that these terms should not be construed as limiting the present application.

[0086] Also, the terms "first" and "second" are used for illustrative purposes only and are not to be construed as indicating or suggesting relative importance or implying the number of technical features shown. Thus, features defined by "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means at least two, for example, two, three, etc., unless otherwise specifically limited.

[0087] In the present application, terms such as "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense unless specifically defined and limited. For example, it may be a fixed connection, a removable connection, or an integral one, a mechanical connection, an electrical connection or a connection capable of communicating with each other, a direct connection, an indirect connection through an intermediate medium, or a connection inside two components or an interaction relationship between two components. A person skilled in the art can understand the specific meaning of the above terms in the present application according to the situation.

[0088] In the present application, that the first feature is "above" or "below" the second feature includes, in addition to the first feature and the second feature being in direct contact, that the first feature and the second feature are not in direct contact but are in contact by another feature therebetween, unless specifically defined and limited. Further, that the first feature is "above", "above the", and "on the upper surface" of the second feature includes that the first feature is directly above and obliquely above the second feature, or simply that the first feature is higher in the horizontal direction than the second feature. That the first feature is "below", "below the", and "on the lower surface" of the second feature includes that the first feature is directly below and obliquely below the second feature, or simply that the first feature is lower in the horizontal direction than the second feature.

[0089] Finally, it should be noted that the above embodiments are for explaining the technical solutions of the present application and are not intended to limit the same. Although the present application is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or perform equivalent substitutions for some or all of their technical features. It should be understood that these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0090] This application claims the priority of a Chinese patent application with an application number of 202210503745.4 and an application title of "Dynamic Cable Protection System and Wind Power Generation System", which was filed with the Chinese Patent Office on May 10, 2022, and all of its contents are incorporated herein by reference.

Description of Reference Numerals

[0091] 10 - Dynamic Cable 11 - First Bending Limiting Device 12 - Second Bending Limiting Device 13 - Protection Device 15 - Anchor Fixing Device 20 - First Buoyancy Device 21 - Through Hole 22 - Annular Groove 23 - Binding Band 24 - Clamping Member 25 - Filling Member 30 - Second Buoyancy Device 31 - Upper Buoyancy Member 311 - Valve 32 - Lower Buoyancy Member 33 - Fixing Member 40 - First Connecting Device 41 - First Intermediate Device 50 - Second Connecting Device 60 - Counterweight Device 61 - Clamp Band 62 - Fastening Member 63 - Internal Cavity 70 - Position Limiting Device 71 - Mooring Device 72 - Second intermediate device 81 - Buoyancy power generation device 82 - Fixing device 90 - Seabed surface

Claims

1. A dynamic cable (10) used for transmitting signals or electrical energy between an above-water facility and a below-water facility, installed in an aquatic environment, and a plurality of first buoyancy devices (20) arranged at intervals along the length direction of the dynamic cable (10), and a plurality of second buoyancy devices (30) arranged to float on the water surface, and a plurality of first connection devices (40), wherein the second buoyancy device (30) is connected to the dynamic cable (10) by the first connection device (40), and the connection position between the first connection device (40) and the dynamic cable (10) is located between two adjacent first buoyancy devices (20), and the dynamic cable (10) is arranged to have a plurality of wave crest portions with the first buoyancy device (20) at the wave crest positions and a plurality of wave trough portions with the connection positions between the first connection device (40) and the dynamic cable (10) at the wave trough positions, driven by the first buoyancy device (20) and the second buoyancy device (30), and the second buoyancy device (30) is used to define the lowest position of the wave trough portion connected between two adjacent wave crest portions. A dynamic cable protection system characterized by this.

2. The second buoyancy device (30) includes an upper buoyancy member (31) and a lower buoyancy member (32), the upper buoyancy member (31) and the lower buoyancy member (32) are connected to be sealed with each other by a fixing member (33), and the average density of the upper buoyancy member (31) is less than or equal to the average density of the lower buoyancy member (32). The dynamic cable protection system according to Claim 1, characterized by this.

3. Further comprising a counterweight device (60), the counterweight device (60) is connected to the dynamic cable (10), and the counterweight device (60) is installed at the end of the dynamic cable (10) close to the above-water facility. The dynamic cable protection system according to Claim 1, characterized by this.

4. The dynamic cable protection system further comprises a position limiting device (70), the position limiting device (70) is connected to the dynamic cable (10) via a mooring device (71), the connection position between the mooring device (71) and the dynamic cable (10) is located at the end of the dynamic cable (10) close to the underwater facility, and the connection position between the mooring device (71) and the dynamic cable (10) is further connected to the second buoyancy device (30) by the first connection device (40). The dynamic cable protection system according to claim 1, characterized in that.

5. The position limiting device (70) is fixed to the bottom of the water or suspended in the water, and the position limiting device (70) pulls the dynamic cable (10) in a direction approaching the bottom of the water. The dynamic cable protection system according to claim 4, characterized in that.

6. The dynamic cable (10) is provided with a protection device (13) at least located in a part of the region between the connection position of the dynamic cable (10) and the underwater facility and the connection position of the mooring device (71) and the dynamic cable (10). The dynamic cable protection system according to claim 5, characterized in that.

7. The dynamic cable protection system further comprises a second connection device (50), and two adjacent second buoyancy devices (30) are connected by the second connection device (50). The dynamic cable protection system according to any one of claims 1-6, characterized in that.

8. The surface of the dynamic cable (10) is covered with a biological inhibitor, or the surface of the dynamic cable (10) is covered with a sheath containing a biological inhibitor. The dynamic cable protection system according to any one of claims 1-6, characterized in that.

9. The first connection device (40) is a rope or an elastic cord, and / or the second connection device (50) is a rope or an elastic cord. The dynamic cable protection system according to claim 7, characterized in that.

10. An offshore facility, an underwater facility, a static cable, and a dynamic cable protection system according to any one of claims 1-6, wherein the offshore facility is a buoyant power generation device (81), the underwater facility is a fixing device (82), one end of the dynamic cable (10) of the dynamic cable protection system is electrically connected to the buoyant power generation device (81), and the other end of the dynamic cable (10) is connected to the static cable via the fixing device (82). A wind power generation system characterized by this.

11. A first bending limiting device (11) is provided at a position where the dynamic cable (10) is electrically connected to the buoyant power generation device (81), and / or a second bending limiting device (12) is provided at a connection position between the dynamic cable (10) and the fixing device (82). The wind power generation system according to claim 10, characterized by this.

12. The buoyant power generation device (81) and the adjacent second buoyant device (30) are connected by a second connecting device (50). The wind power generation system according to claim 10, characterized by this.

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