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, wherein the dynamic cable protection system comprises a dynamic cable, a plurality of first buoyancy devices, a plurality of second buoyancy devices, and a plurality of first connecting devices, wherein the dynamic cable is located in a water environment and the dynamic cable is intended to transmit signals or electrical energy between a surface facility and an underwater facility, and the plurality of first buoyancy devices are installed spaced apart on the dynamic cable and the second buoyancy devices float on the surface; the second buoyancy devices are connected to the dynamic cable through the first connecting devices, and the location where the first connecting devices and the dynamic cable are connected is located between two adjacent first buoyancy devices; and the second buoyancy devices are intended to define the lowest position of a trough section of the dynamic cable, and the trough section is connected between two adjacent peak sections. The present application prevents the dynamic cable from being compressed and bent, causing it to come into contact with the seabed, thereby affecting the use and lifespan of the dynamic cable.

Description

Technology Field

[0001] This application relates to the field of offshore wind power generation technology, and in particular to dynamic cable protection systems and wind power generation systems.

[0002] The present application claims priority to a Chinese patent application filed with the Chinese Patent Office on May 10, 2022, with application number 202210503745.4 and titled "Dynamic cable protection system and wind power generation system," all of which are incorporated into the present application by reference. Background Technology

[0003] Dynamic cables serve as specialized power and signal transmission media, playing an indispensable role in power transmission and communication control signal transmission in the marine industry. For instance, in floating wind power generation, dynamic cables must transmit generated electrical energy to the wind source; in offshore oil and gas development, they must supply power to platforms and facilities; and in offshore new energy generation, underwater observation, and scientific research, dynamic cables are required to transmit electrical energy.

[0004] When a dynamic cable floats in water, large displacement, bending, and twisting are inevitable due to the combined action of various factors such as ocean hydrology and weather. Additionally, many marine organisms, such as shellfish and algae, accumulate on the dynamic cable, causing the cable's hull to be compressed and lowered. If the dynamic cable bends excessively, the part floating in the water moves downward and comes into contact with the seabed. If movement and twisting motion occur, the cable will repeatedly rub against the seabed, which will have a serious impact on the cable's lifespan and serviceability.

[0005] Therefore, there is an urgent need for a dynamic cable protection system and a wind power generation system that prevent the linearity of the dynamic cable from being lowered by compression and coming into contact with the seabed, thereby preventing it from affecting the use and lifespan of the dynamic cable. The problem to be solved

[0006] The present application provides a dynamic cable protection system and a wind power generation system, thereby solving the technical problem in which the linearity of a dynamic cable is easily lowered by being pressed and comes into contact with the seabed, affecting the use and lifespan of the dynamic cable. means of solving the problem

[0007] To achieve the above-mentioned purpose, the present application provides a dynamic cable protection system, and

[0008] A dynamic cable located in a water environment for transmitting signals or electrical energy between surface equipment and underwater equipment;

[0009] A plurality of first buoyancy devices installed on the dynamic cable spaced apart along the longitudinal direction of the dynamic cable;

[0010] A plurality of second buoyancy devices positioned to float on the water surface;

[0011] Includes a plurality of first connecting devices; and

[0012] The second buoyancy device is connected to the dynamic cable through the first connecting device, and the location where the first connecting device and the dynamic cable are connected is located between two adjacent first buoyancy devices;

[0013] The dynamic cable is driven by the first buoyancy device and the second buoyancy device and is arranged to represent a plurality of peak sections with the first buoyancy device as the peak position, and a plurality of valley sections with the connection position between the first connecting device and the dynamic cable as the valley position, wherein the second buoyancy device is for defining the lowest position of the valley section, and the valley section is connected between two adjacent peak sections.

[0014] In the dynamic cable protection system provided in the present application, a plurality of first buoyancy devices are installed spaced apart on the dynamic cable, the second buoyancy device floats on the water surface, and the second buoyancy device is connected to the dynamic cable through the first connecting device. Under the buoyancy action of the first buoyancy device and the second buoyancy device itself, the dynamic cable is made to exhibit a constant linear shape underwater. Through the traction action of the second buoyancy device and the first connecting device on the dynamic cable, the dynamic cable is prevented from bending excessively downward due to the attachment of marine organisms and coming into contact with the seabed, thereby causing repetitive friction with the seabed during movement and torque of the dynamic cable, which would otherwise affect the use and lifespan of the dynamic cable. In particular, for dynamic cables in shallow waters, the long-term reliability of the dynamic cable is improved.

[0015] In one possible embodiment, the second buoyancy device comprises an upper buoyancy member and a lower buoyancy member, wherein the upper buoyancy member and the lower buoyancy member are sealedly connected to each other through 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.

[0016] In one possible embodiment, the dynamic cable protection system described above further includes a counterweight device, said counterweight device is connected to the dynamic cable, and said counterweight device is located at one end of the dynamic cable close to the sleeping facility.

[0017] In one possible embodiment, the dynamic cable protection system described above further includes a limit device, said limit device is connected to the dynamic cable through a mooring device, and the location where the mooring device and the dynamic cable are connected is located at one end of the dynamic cable close to the underwater facility, and the location where the mooring device and the dynamic cable are connected is also connected to the second buoyancy device through the first connecting device.

[0018] In one possible embodiment, the limit device is fixed underwater or floating underwater, and the limit device pulls the dynamic cable in a direction approaching underwater.

[0019] In one possible embodiment, a protective device is installed on the dynamic cable, and the protective device is located in a partial area between the connection location of the dynamic cable and the underwater facility and the connection location of the mooring device and the dynamic cable.

[0020] In a possible embodiment, the dynamic cable protection system described above further includes a second connecting device, and two adjacent second buoyancy devices are connected through the second connecting device.

[0021] In one possible embodiment, the surface of the dynamic cable is covered with a bioinhibitor; or the surface of the dynamic cable is covered with a protective sleeve containing a bioinhibitor.

[0022] In one possible embodiment, the first connecting device is a rope or elastic cable; and / or the second connecting device is a rope or elastic cable.

[0023] The present application further provides a wind power generation system comprising a surface facility, an underwater facility, a static cable, and the dynamic cable protection system described above, wherein the surface facility is a buoyancy power generation device, the underwater facility is a fixed 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 fixed device.

[0024] In a possible embodiment, a first bending limiting device is installed at a location where the dynamic cable and the buoyancy power generation device are electrically connected, and a second bending limiting device is installed at a location where the dynamic cable and the fixed device are connected.

[0025] In a possible embodiment, the buoyancy power generation device and the adjacent second buoyancy device are connected through a second connecting device. Effects of the invention

[0026] In the dynamic cable protection system and wind power generation system provided in the present application, the dynamic cable is configured to have a shape of a plurality of peak sections and a plurality of trough sections that are alternately connected to each other underwater, for example, a double peak shape, a multi-peak shape, etc., thereby enabling the dynamic cable to have the ability to mitigate impact forces resulting from movement, bending, and twisting motions, and is advantageous for improving the service life of the dynamic cable.

[0027] The wind power generation system provided in this application utilizes a multi-peak underwater linear design for the dynamic cable to ensure that both the peak and trough sections of the linear design of the dynamic cable are located further away from the seabed and prevent contact with the bottom, and is capable of withstanding severe horizontal shaking of the floating device.

[0028] In the dynamic cable protection system and wind power generation system provided in the present application, the second connecting device connects two adjacent second buoyancy devices so that a plurality of the second buoyancy devices are connected as a whole, which is advantageous for limiting the buoyancy range of the second buoyancy devices on the water surface and for limiting the linearity of the dynamic cable.

[0029] In the dynamic cable protection system and wind power generation system provided in the present application, a bio-inhibitor is covered on the surface of the dynamic cable or a protective sleeve containing a bio-inhibitor is covered on the surface of the dynamic cable, which is advantageous for preventing marine organisms from attaching to the dynamic cable and causing the dynamic cable to be pressed down and lowered, and by combining the physical means for installing the second buoyancy device and the chemical means of the bio-inhibitor, the effect of preventing the dynamic cable from being pressed down and touching the bottom is excellent, and the service life of the dynamic cable is improved.

[0030] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solution, and the advantageous effects resulting from the technical features of such technical solution, other technical problems that can be solved by the dynamic cable protection system and wind power generation system provided in the embodiments of the present application, other technical features included in the technical solution, and the advantageous effects resulting from such technical features will be explained in more detail in specific embodiments. Brief explanation of the drawing

[0031] In order to more clearly explain the embodiments of the present application or technical solutions according to the prior art, the attached drawings required for use in the embodiments or prior art are briefly introduced below. The attached drawings described below are merely some embodiments of the present application, and it is obvious that a person skilled in the art could derive other attached drawings from these attached drawings without creative effort. FIG. 1 is a structural diagram of a wind power generation system provided in an embodiment of the present application. FIG. 2 is a structural diagram of the second buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 3 is another structural diagram of the second buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 4 is a perspective view of the first buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 5 is another perspective view of the first buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 6 is a front view of the first buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. Figure 7 is a cross-sectional view of the AA section of Figure 6. FIG. 8 is a right-side view of the first buoyancy device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 9 is a perspective view of a counterweight device of a dynamic cable protection system provided in an embodiment of the present application. FIG. 10 is a perspective view of the first bending limiting device of the dynamic cable protection system provided in an embodiment of the present application. FIG. 11 is a structural diagram of an anchoring device of a dynamic cable protection system provided in an embodiment of the present application. Specific details for implementing the invention

[0032] To make the purpose, technical solution, and advantages of this application clearer, the technical solution according to this application is described below in a clear and complete manner in conjunction with the attached drawings. It is obvious that the described embodiments are only some embodiments of the invention and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without creative labor based on the embodiments according to this application are all within the scope of protection of this application.

[0033] Dynamic cables, particularly those in shallow water environments, are susceptible to violent oscillations caused by various factors such as waves, currents, and platforms during use. However, if the cable bends excessively downward and comes into contact with the seabed, it is prone to structural damage, which affects the cable's service life and lifespan. Research suggests that maintaining a constant underwater linearity is advantageous in preventing the cable from becoming uncontrollable and ineffective under extreme conditions. Nevertheless, when a dynamic cable is buried underwater, a large amount of marine organisms accumulate on its surface. This increases the cable's outer diameter and weight, making it prone to localized corrosion and changes in underwater linearity, ultimately causing the cable to come into contact with the seabed and be damaged.

[0034] Considering the background described above, the present application comprises a plurality of first buoyancy devices and a plurality of second buoyancy devices, wherein the second buoyancy devices float on the water surface, and through the buoyancy action of the first buoyancy devices and the second buoyancy devices themselves, the dynamic cable is made to exhibit a constant linear shape underwater, and through the traction action of the second buoyancy devices and the first connecting device on the dynamic cable, the dynamic cable is prevented from bending excessively downward and coming into contact with the seabed due to the attachment of marine organisms.

[0035] Below, the dynamic cable protection system and wind power generation system provided in the embodiments of the present application are described with reference to the attached drawings.

[0036] Referring to FIG. 1, the present application provides a dynamic cable protection system comprising a dynamic cable (10), a plurality of first buoyancy devices (20), a plurality of second buoyancy devices (30) and a plurality of first connecting devices (40), wherein the dynamic cable (10) is located in a water environment and the dynamic cable (10) is intended to transmit a signal or electrical energy between a surface facility and an underwater facility; a plurality of first buoyancy devices (20) are installed on the dynamic cable (10) spaced apart along the longitudinal direction of the dynamic cable (10); a second buoyancy device (30) is positioned to float on the water surface; the second buoyancy device (30) is connected to the dynamic cable (10) through a first connecting device (40), and the location where the first connecting device (40) and the dynamic cable (10) are connected is located between two adjacent first buoyancy devices (20); The dynamic cable (10) is driven by the first buoyancy device (20) and the second buoyancy device (30) and is arranged to have a plurality of peak sections with the first buoyancy device (20) as the peak position, and a plurality of valley sections with the connection position between the first connecting device (40) and the dynamic cable (10) as the valley position, and the second buoyancy device (30) is for defining the lowest position of the valley section, and the valley section is connected between two adjacent peak sections.

[0037] In the dynamic cable protection system provided in the present application, a plurality of first buoyancy devices (20) are installed spaced apart on the dynamic cable (10), a second buoyancy device (30) floats on the water surface, and the second buoyancy device (30) is connected to the dynamic cable (10) through a first connecting device (40). Under the buoyancy action of the first buoyancy device (20) and the second buoyancy device (30) themselves, the dynamic cable (10) is made to exhibit a certain linear shape underwater. Through the traction action of the second buoyancy device (30) and the first connecting device (40) on the dynamic cable (10), the dynamic cable (10) is prevented from bending excessively downward due to the attachment of marine organisms and coming into contact with the seabed (90), thereby causing movement of the dynamic cable (10) and repeated friction with the seabed (90) during torque, which would affect the use and lifespan of the dynamic cable (10). In particular, in the case of the dynamic cable (10) in shallow water, the long-term Usage reliability is improved.

[0038] In the dynamic cable protection system provided in the present application, the dynamic cable (10) is configured to have a shape of a plurality of peak sections and a plurality of valley sections that are alternately connected to each other underwater, such as a double peak shape or a multi-peak shape, thereby enabling the dynamic cable (10) to mitigate impact forces resulting from movement, bending, and twisting motions of the dynamic cable (10), and is advantageous for improving the service life of the dynamic cable (10).

[0039] The second buoyancy device (30) is connected to the dynamic cable (10) through the first connecting device (40), and the location where the first connecting device (40) and the dynamic cable (10) are connected is located between two adjacent first buoyancy devices (20). The connection location between the first connecting device (40) and the dynamic cable (10) is a groove location, and under the upward pulling action of the second buoyancy device (30) and the first connecting device (40), the lowest position of the groove section is limited, thereby preventing the dynamic cable (10) from bending excessively and also preventing the dynamic cable (10) from floating upward as a whole, thereby improving the service life of the dynamic cable (10).

[0040] In a possible embodiment, referring to FIGS. 2 and FIGS. 3, the second buoyancy device (30) comprises an upper buoyancy member (31) and a lower buoyancy member (32), and the upper buoyancy member (31) and the lower buoyancy member (32) are sealedly connected to each other through 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 fixing member (33) ensures that the connection location between the upper buoyancy member (31) and the lower buoyancy member (32) maintains excellent sealing. This structure allows the buoyancy of the second buoyancy device (30) to be greater than the design load weight and enables the upper buoyancy member (31) to provide sufficient buoyancy, thereby greatly improving the safety of use of the entire dynamic cable protection system.

[0041] In a possible embodiment, the upper buoyancy member (31) may be an airbag, for example, a ball shape, an elliptical ball shape, etc., and the upper buoyancy member (31) may be a single-layer structure, and is not limited to being filled with air or helium gas, but may be filled with other gases, and after the upper buoyancy member (31) is filled with gas of a constant pressure, it has a constant rigidity, is resistant to wave impact, and ensures a service life.

[0042] In a possible embodiment, the upper buoyancy member (31) may use a double structure, with the inner layer filled with gas and the outer layer injected with water, so that the upper buoyancy member (31) maintains excellent airtightness and pressure, thereby preventing the second buoyancy device (30) from floating up into the air and affecting its use.

[0043] The upper buoyancy member (31) is not limited to using a flexible silicone or rubber material and may be made of other flexible materials. The lower buoyancy member (32) may be a buoyancy block processed from a general buoyancy material, and the lower buoyancy member (32) may use one or more materials such as polyurethane, polyethylene, and glass beads, but is not limited thereto.

[0044] It is easy to understand that the average density of the upper buoyancy member (31) refers to the average value of the material density of the upper buoyancy member (31) itself and the density of the medium filled inside the upper buoyancy member (31). However, the lower buoyancy member (32) causes density non-uniformity due to causes such as material non-uniformity, and the average density of the lower buoyancy member (32) refers to the average value of the material density used by the lower buoyancy member (32).

[0045] In a possible embodiment, the upper buoyancy member (31) is fitted onto the upper end of the lower buoyancy member (32), and the fixing member (33) may be a collar. The upper buoyancy member (31) passes through the inside of the collar, and the collar is fitted onto the upper end of the lower buoyancy member (32) and fixedly connected to the lower buoyancy member (32), thereby compressing the upper buoyancy member (31) and the lower buoyancy member (32) through the fixing member (33) to ensure that the upper buoyancy member (31) maintains excellent sealing. For ease of understanding, a sealing member may be installed at the connection location where the upper buoyancy member (31) is fitted onto the lower buoyancy member (32), and an adhesive, such as glue, may be applied to the connection location between the upper buoyancy member (31) and the lower buoyancy member (32) to ensure that the upper buoyancy member (31) and the lower buoyancy member (32) are stably connected and maintain excellent sealing.

[0046] In another possible embodiment, the fixing member (33) may be a screw, and the circumference of the upper buoyancy member (31) and the lower buoyancy member (32) are firmly connected through the screw. Additionally, an adhesive such as glue may be applied to the connection location of the fixing member (33), and a sealing member may be installed at the connection location of the fixing member (33) to ensure that the connection between the upper buoyancy member (31) and the lower buoyancy member (32) does not affect the sealability of the upper buoyancy member (31).

[0047] In another possible embodiment, the upper buoyancy member (31) may be toroidal and filled with gas inside, the inner diameter of the upper buoyancy member (31) may be fitted entirely onto the outer circumference of the lower buoyancy member (32), and a baffle is installed on the upper part of the lower buoyancy member (32) to prevent the upper buoyancy member (31) from escaping. Alternatively, the upper buoyancy member (31) and the lower buoyancy member (32) may be firmly connected through a fixing member (33), and the fixing member (33) may be a screw.

[0048] For easy understanding, the upper buoyancy member (31) is equipped with a valve (311), and gas is filled into the upper buoyancy member (31) through the valve (311), and the valve (311) maintains a sealing effect so as not to leak gas from the valve (311).

[0049] A connecting tab can be installed on both the bottom and both sides of the lower buoyancy member (32), and the connecting tab can be integrally molded with the lower buoyancy member (32). A through hole is opened within the connecting tab, making it convenient to fix the connection between the lower buoyancy member (32) and the first connecting device (40), and also convenient to fix the connection between the lower buoyancy member (32) and the second connecting device (50).

[0050] Referring to FIG. 1 and FIG. 3, when operating normally, the lower buoyancy member (32) of the second buoyancy device (30) is submerged in water, but the upper buoyancy member (31) is maintained above the water surface, and since the average density of the buoyancy material itself of the lower buoyancy member (32) is lower than the density of seawater, the lower buoyancy member (32) can provide net buoyancy suitable for the entire dynamic cable protection system to satisfy usage requirements.

[0051] 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), after the pulling 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 dynamic cable (10) of the second buoyancy device (30) installed in that section tends to be pulled down below the water surface, and at this time, the lower buoyancy member (32) continues downward and becomes completely submerged in water. If it is still not possible to provide sufficient net buoyancy, the upper buoyancy member (31) is pulled and moves together into the water, causing a portion of the upper buoyancy member (31) volume to be submerged in water. Since the upper buoyancy member (31) is filled with gas, the average density of the upper buoyancy member (31) is much lower than the average density of seawater, so the upper buoyancy member (31) provides sufficient net buoyancy, ensuring that the dynamic cable (10) of the second buoyancy device (30) installed in the section is not dragged to a deeper point, and ensuring the stability of use of the entire dynamic cable protection system.

[0052] When the pulling force transmitted from the dynamic cable (10) to the second buoyancy device (30) is reduced, the upper buoyancy member (31) rises upward and is gradually exposed above the water surface, and the net buoyancy provided by the second buoyancy device (30) is reduced until the entire load balance is achieved, thereby ensuring the usability and balance of the entire dynamic cable protection system and effectively coping with harsh natural environments.

[0053] In a possible embodiment, the second buoyancy device (30) and the first connecting device (40) are connected in a one-to-one correspondence.

[0054] In a possible embodiment, referring to FIG. 1, in order to secure a stable connection effect between the first buoyancy device (20) and the dynamic cable (10), the first buoyancy device (20) can be firmly connected to the outer circumference of the dynamic cable (10), thereby causing the position of the dynamic cable (10) where the first buoyancy device (20) is fitted to float in the water and to show a plurality of peak sections with the first buoyancy device (20) as the peak position.

[0055] In a possible embodiment, the first buoyancy device (20) may be a buoyancy block and is connected to the outer circumference of the dynamic cable (10).

[0056] In a possible embodiment, with reference to FIGS. 4 and FIGS. 5, the first buoyancy device (20) may be a buoyancy cylinder, and with reference to FIGS. 1 and FIGS. 8, a through cavity (21) is provided within the first buoyancy device (20), the first buoyancy device (20) is fitted onto the outer circumference of the dynamic cable (10), and the dynamic cable (10) passes through the inside of the through cavity (21).

[0057] In a possible embodiment, with reference to FIGS. 6 and FIGS. 7, a through cavity (21) is provided within the first buoyancy device (20), and a clamping member (24) is installed within the through cavity (21). The clamping member (24) can be fixed within the through cavity (21) through a screw. A filling member (25) is provided within the inner wall of the first buoyancy device (20). A ring groove (22) is opened on the outer circumference of the first buoyancy device (20), and a binding strap (23) is installed within the ring groove (22). The first buoyancy device (20) is stably fixed on the outer circumference of the dynamic cable (10) through the binding strap (23) and the clamping member (24). The clamping member (24) may be a clamp, and the filling member (25) may be a buoyancy block.

[0058] In one possible embodiment, the first buoyancy device (20) may be a block-shaped structure formed integrally with the outer circumference of the dynamic cable (10), and is formed by pouring a hollow carbon fiber ball or a hollow glass ball and an adhesive material together into a mold and allowing it to cool naturally.

[0059] In a possible embodiment, a plurality of first buoyancy devices (20) may be installed on the dynamic cable (10) spaced apart along the longitudinal direction of the dynamic cable (10) itself. For example, a plurality of first buoyancy devices (20) may be uniformly distributed along the longitudinal direction of the dynamic cable (10); or a plurality of first buoyancy devices (20) may be formed into a set, with the first buoyancy devices (20) of each set being uniformly distributed along the longitudinal direction of the dynamic cable (10) and the first buoyancy devices (20) within each set being arranged sequentially, and the number of first buoyancy devices (20) may be installed flexibly according to demand and is not specifically limited thereto.

[0060] In one possible embodiment, the second buoyancy device (30) floats on the water surface, and the second buoyancy device (30) may be a buoyancy sphere, for example, made of expanded polyethylene, expanded polypropylene, or expanded polyurethane material, and the interior of the second buoyancy device (30) may be hollow and filled with gas.

[0061] In one possible embodiment, the first connecting device (40) and the dynamic cable (10) may be connected through the first intermediate device (41). The first intermediate device (41) may be fixedly connected to one end of the first connecting device (40) and may be fitted around the dynamic cable (10) as a connecting sleeve; and the first intermediate device (41) may be clamped around the dynamic cable (10) as a clamping member so that the first connecting device (40) is stably connected to the dynamic cable (10) through the first intermediate device (41), thereby preventing damage from excessive impact between the dynamic cable (10) and the first connecting device (40).

[0062] In one possible embodiment, the first intermediate device (41) can prevent the dynamic cable (10) from being worn out when it comes into contact with the seabed (90) by protecting the dynamic cable (10) using a wear-resistant non-metallic material.

[0063] In one possible embodiment, the dynamic cable protection system further includes a counterweight device (60), the counterweight device (60) is connected to the dynamic cable (10), and the counterweight device (60) is located at one end of the dynamic cable (10) close to the sleeping facility.

[0064] It is easy to understand that the counterweight device (60) has a constant weight and applies downward gravity to the dynamic cable (10), and the weight of the counterweight device (60) can cause one end of the dynamic cable (10) that is close to the surface of the water to be pressed into the water, thereby preventing the dynamic cable from floating on the surface of the water.

[0065] In a possible embodiment, referring to FIGS. 1 and FIGS. 9, the counterweight device (60) comprises at least two hoops (61) that interlock with each other, and an inner cavity (63) is formed inside the counterweight device (60). The hoops (61) wrap around the outer circumference of the dynamic cable (10), and two adjacent hoops (61) are connected through a fastening member (62) so that the hoops (61) are stably fixed on the dynamic cable (10), thereby adding a counterweight to the dynamic cable (10). The hoops (61) have a constant wall thickness and perform the effect of increasing the counterweight.

[0066] In a possible embodiment, the hoop (61) is provided with a connecting portion (611), and a connecting hole is opened within the connecting portion (611). When two hoops (61) are interlocked, the connecting portions (611) of the two hoops (61) come into contact with each other, and a fastening member (62) is installed through the connecting hole to stably connect the two hoops (61).

[0067] In a possible embodiment, the fastening member (62) may be a bolt, stud, screw, etc., and facilitates the installation and removal of the counterweight device (60).

[0068] In a possible embodiment, referring to FIG. 1, the dynamic cable protection system further includes a limit device (70), the limit device (70) is fixed underwater or in water, and the limit device (70) is connected to the dynamic cable (10) through a mooring device (71). The location where the mooring device (71) and the dynamic cable (10) are connected is located at one end of the dynamic cable (10) that is close to the underwater facility, and the location where the mooring device (71) and the dynamic cable (10) are connected is also connected to a second buoyancy device (30) through a first connecting device (40). Through this structure, the location where the mooring device (71) and the dynamic cable (10) are connected can not only limit the dynamic cable (10) from bending too far down and touching the bottom, but also prevent the dynamic cable (10) from being lifted too far up and the one end of the dynamic cable (10) connected to the underwater facility from bending too far.

[0069] In a possible embodiment, the limit device (70) is fixed underwater or floating underwater, and the limit device (70) pulls the dynamic cable (10) in a direction approaching underwater, and the limit device (70) is stably connected between the dynamic cable (10) and the underwater facility through a mooring device (71).

[0070] In one possible embodiment, the mooring device (71) may be connected to the dynamic cable (10) through a second intermediate device (72); of course, it is also possible for both the mooring device (71) and the first connecting device (40) to be connected to the dynamic cable (10) through the second intermediate device (72). The second intermediate device (72) may be fitted onto the outer circumference of the dynamic cable (10) and may be clamped onto the outer circumference of the dynamic cable (10) to prevent damage from excessive impact between the dynamic cable (10) and the mooring device (71).

[0071] In one possible embodiment, a protective device (13) is installed on the dynamic cable (10), and the protective device (13) is located in a partial area between the connection point of the dynamic cable (10) and the underwater facility and the connection point of the mooring device (71) and the dynamic cable (10). Considering that there is a possibility that the dynamic cable (10) may come into contact with the seabed (90) during the movement of the dynamic cable (10), the protective device (13) is installed in the corresponding partial area to protect the dynamic cable (10).

[0072] In one possible embodiment, the protective device (13) may be a wear-resistant protective sleeve and improves the wear resistance of the corresponding portion of the dynamic cable (10).

[0073] In a possible embodiment, the mooring device (71) may be an elastic cable, a spring, a non-elastic rope, etc.

[0074] In a possible embodiment, two adjacent second buoyancy devices (30) are both freely floating and are not connected to each other.

[0075] In a possible embodiment, the dynamic cable protection system further includes a second connecting device (50), and the second connecting device (50) is connected between adjacent second buoyancy devices (30). The second connecting device (50) is intended to connect two adjacent second buoyancy devices (30) to connect the plurality of second buoyancy devices (30) as a whole, and is advantageous for limiting the range of movement of the second buoyancy devices (30) on the water surface.

[0076] It is easy to understand that the second connecting device (50) may connect two or more adjacent second buoyancy devices (30) in series as a set, and the second connecting device (50) may connect all second buoyancy devices (30) in series to limit the range of movement of the second buoyancy devices (30), which is advantageous for limiting the linearity of the dynamic cable (10).

[0077] In one possible embodiment, the surface of the dynamic cable (10) may be covered with a bio-inhibitor; or the surface of the dynamic cable (10) may be covered with a protective sleeve containing a bio-inhibitor. The protective sleeve surrounds the dynamic cable (10) to prevent marine organisms from attaching to the dynamic cable (10) and causing the dynamic cable to be compressed.

[0078] In one possible embodiment, the surface of the dynamic cable (10) may be covered with a bio-inhibitor by a spray coating method.

[0079] In one possible embodiment, the first connecting device (40) is a rope or an elastic cable; and when a change in the water environment in which the dynamic cable protection system provided in this application is subjected causes a large range of drift or severe shaking of the dynamic cable (10), the dynamic cable (10) is stably restrained through the first connecting device (40) so as not to be excessively large, thereby preventing the dynamic cable (10) from being damaged by touching the bottom due to the action of waves, currents, or other factors while in operation, and ensuring the service life of the dynamic cable (10).

[0080] In a possible embodiment, the second connecting device (50) is a rope or an elastic cable.

[0081] The dynamic cable protection system provided in this embodiment combines a physical means of towing the dynamic cable (10) by installing a second buoyancy device (30) and a chemical means of covering the surface of the dynamic cable (10) with a bio-inhibitor, thereby ensuring an excellent effect of preventing the dynamic cable (10) from bending downward and touching the ground, and improving the service life of the dynamic cable (10).

[0082] The present application further provides a wind power generation system comprising a surface facility, an underwater facility, a static cable, and the dynamic cable protection system described above, wherein the surface facility is a buoyancy power generation device (81), the underwater facility is a fixed device (82), and one end of the dynamic cable (10) of the dynamic cable protection system is electrically connected to the buoyancy power generation device (81), and the other end of the dynamic cable (10) is connected to the static cable through the fixed device (82).

[0083] In a possible embodiment, the buoyancy power generation device (81) may be a floating wind power generator.

[0084] In a possible embodiment, the fixing device (82) may be a connector and connects the dynamic cable (10) and the static cable.

[0085] In a possible embodiment, with reference to FIG. 1 and FIG. 10, a first bending limiting device (11) is installed at a location where the dynamic cable (10) and the buoyancy power generation device (81) are electrically connected, and a second bending limiting device (12) is installed at a location where the dynamic cable (10) and the fixed device (82) are connected.

[0086] Referring to FIG. 1 and FIG. 11, the first bending limiting device (11) may be a rigid tube sleeve, and the second bending limiting device (12) may have the same structure as the first bending limiting device (11). An anchoring device (15) is further installed to fix the first bending limiting device (11) and the second bending limiting device (12) to the outer circumference of the dynamic cable (10). The first bending limiting device (11) is connected to the anchoring device (15) in a corresponding manner, and the second bending limiting device (12) is connected to the anchoring device (15) in a corresponding manner. The first bending limiting device (11) and the second bending limiting device (12) are intended to prevent bending deformation from occurring at the location where the dynamic cable (10) and the buoyancy power generation device (81) are electrically connected, and to prevent bending deformation from occurring at the location where the dynamic cable (10) and the fixing device (82) are connected, thereby causing damage.

[0087] In a possible embodiment, the buoyancy power generation device (81) and the adjacent second buoyancy device (30) are connected through a second connecting device (50), and this structure is advantageous for limiting the range of movement of the second buoyancy device (30) so that the range of movement of the second buoyancy device (30) is excessively large, thereby preventing the linear change of the dynamic cable (10) from becoming excessively large and even the fixing device (82) from being pulled severely, so that the linearity of the dynamic cable (10) remains in a stable state.

[0088] In the wind power generation system provided in the present application, the dynamic cable (10) uses a multi-peak underwater linear design to ensure that both the peak section and the trough section of the dynamic cable (10) linear design are further from the seabed and is equipped with the ability to withstand severe horizontal shaking of the floating device.

[0089] When extreme waves, ocean current loads are applied or the buoyancy power generation device (81) moves violently, the linear shape of the dynamic cable (10) changes significantly, for example, the trough section of the dynamic cable (10) moves in a direction that approaches the seabed (90). In order to prevent the dynamic cable (10) from touching the bottom, the load is transferred to the second buoyancy device (30) through the immediate tightening of the first connecting device (40), and the second buoyancy device (30) pulls the dynamic cable (10) that has been pressed down under its own sufficiently large buoyancy action, thereby preventing the dynamic cable (10) from moving further down and thus achieving the effect of preventing the dynamic cable (10) from touching the bottom.

[0090] In the wind power generation system provided in the present application, the dynamic cable (10) has a shape of a plurality of peak sections and a plurality of trough sections that are alternately connected to each other underwater, and the linear peak sections and trough sections of the dynamic cable (10) can all be secured to be further away from the seabed and have the ability to withstand severe horizontal shaking of the buoyancy power generation device (81).

[0091] The wind power generation system provided in the present application can be used for power transmission in the marine industry, and the buoyancy power generation device (81) can generate power using wind power and transmit electrical energy underwater through a dynamic cable (10).

[0092] It should be understood that in the description of this application, the orientation or positional relationship indicated by the terms used, such as “center,” “length,” “width,” “thickness,” “top,” “bottom,” “top,” “bottom,” “left,” “right,” “front,” “back,” “vertical,” “horizontal,” “inside,” “outside,” “axial,” “circumferential,” etc., is based on the orientation or positional relationship shown in the attached drawings and is merely for the convenience and simplification of the description of this application. It does not indicate or imply that the indicated position or element must necessarily have a specific orientation and be specifically configured and operated, and therefore should not be understood as a limitation on this application.

[0093] Meanwhile, terms such as "first," "second," etc. are for illustrative purposes only and should not be understood as implicitly indicating the quantity of technical features that indicate or suggest relative importance. Accordingly, features limited to "first" or "second" explicitly or implicitly indicate that they include one or more of the corresponding features. In the description of this application, the meaning of "plural" is at least two unless otherwise clearly specified, and may be, for example, two, three, etc.

[0094] In this application, unless otherwise explicitly defined or limited, terms such as “mounting,” “connecting,” “connecting,” “fixing,” etc., should be understood in a broad sense and may, for example, be a fixed connection, a detachable connection, or be integral; may be a mechanical connection, an electrical connection, or communicate with each other; may be a direct connection, an indirect connection through an intermediate medium, or an internal communication or interaction relationship between two elements. Those skilled in the art will understand the specific meaning of the aforementioned terms in this application depending on the specific case.

[0095] In this application, unless otherwise explicitly defined or limited, the statement that the first feature is "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or it may include the first feature and the second feature being in contact through a separate feature between them without direct contact. Additionally, the statement that the first feature is "above," "upper," and "upper surface" of the second feature includes the first feature being directly above and on an inclined upper surface of the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The statement that the first feature is "below," "lower," and "lower surface" of the second feature includes the first feature being directly below and on an inclined lower surface of the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0096] Finally, it must be noted that each of the embodiments described above is intended only to illustrate the technical solution of the present application and is not intended to be limiting; although the present application has been described in detail with reference to each of the embodiments described above, those skilled in the art should understand that modifications to the technical solution described in each of the embodiments described above, or equivalent substitutions to some or all of the technical features, may still be made; and such modifications or substitutions do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of each of the embodiments of the present application. Explanation of the symbols

[0097] 10: Dynamic cable 11: First bending limiting device 12: Second bending limiting device 13: Protection device 15: Anchoring device 20: First buoyancy device 21: Through cavity 22: Ring groove 23: Binding strap 24: Clamping member 25: Charging member 30: Second buoyancy device 31: Upper buoyancy member 311: Valve 32: Lower buoyancy member 33: Fixed member 40: First connecting device 41: First intermediate device 50: Second connecting device 60: Counterweight device 61: Hoop 62: Fastening member 63: Inner cavity 70: Limit device 71: Mooring device 72: Second intermediate device 81: Buoyancy generator 82: Fixed device 90: Seafloor

Claims

Claim 1 A dynamic cable (10) for transmitting signals or electrical energy between a surface facility and an underwater facility, located in a water environment; a plurality of first buoyancy devices (20) installed on the dynamic cable (10) spaced apart along the longitudinal direction of the dynamic cable (10); a plurality of second buoyancy devices (30) arranged to float on the surface of the water; and a plurality of first connecting devices (40); wherein the second buoyancy devices (30) are connected to the dynamic cable (10) through the first connecting devices (40), and the location where the first connecting devices (40) and the dynamic cable (10) are connected is located between two adjacent first buoyancy devices (20); and the dynamic cable (10) is arranged to have a plurality of peak sections where the first buoyancy device (20) is a peak position by driving the first buoyancy device (20) and the second buoyancy device (30), and a plurality of trough sections where the connection location between the first connecting devices (40) and the dynamic cable (10) is a trough position, and the second buoyancy A dynamic cable protection system characterized in that the device (30) is for limiting the lowest position of the valley section, and the valley section is connected between two adjacent peak sections. Claim 2 A dynamic cable protection system according to claim 1, wherein the second buoyancy device (30) comprises an upper buoyancy member (31) and a lower buoyancy member (32), and the upper buoyancy member (31) and the lower buoyancy member (32) are sealedly connected to each other through a fixed 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). Claim 3 A dynamic cable protection system according to claim 1, further comprising a counterweight device (60), wherein the counterweight device (60) is connected to the dynamic cable (10), and the counterweight device (60) is located at one end of the dynamic cable (10) that is close to the water surface facility. Claim 4 A dynamic cable protection system according to claim 1, further comprising a limit device (70), wherein the limit device (70) is connected to the dynamic cable (10) through a mooring device (71), the location where the mooring device (71) and the dynamic cable (10) are connected is located at one end of the dynamic cable (10) that is close to the underwater facility, and the location where the mooring device (71) and the dynamic cable (10) are connected is also connected to the second buoyancy device (30) through the first connecting device (40). Claim 5 A dynamic cable protection system according to claim 4, wherein the limit device (70) is fixed underwater or floating underwater, and the limit device (70) pulls the dynamic cable (10) in a direction approaching underwater. Claim 6 A dynamic cable protection system according to claim 5, wherein a protection device (13) is installed on the dynamic cable (10), and the protection device (13) is located in a partial area between the connection location of the dynamic cable (10) and the underwater facility and the connection location of the mooring device (71) and the dynamic cable (10). Claim 7 A dynamic cable protection system characterized in that, in any one of claims 1 to 6, it further includes a second connecting device (50), and two adjacent second buoyancy devices (30) are connected through the second connecting device (50). Claim 8 A dynamic cable protection system characterized in that, in any one of claims 1 to 6, the surface of the dynamic cable (10) is covered with a bio-inhibitor; or the surface of the dynamic cable (10) is covered with a protective sleeve containing a bio-inhibitor. Claim 9 A dynamic cable protection system according to claim 7, wherein the first connecting device (40) is a rope or elastic cable; and / or the second connecting device (50) is a rope or elastic cable. Claim 10 A wind power generation system comprising a surface facility, an underwater facility, a static cable, and a dynamic cable protection system according to any one of claims 1 to 6, wherein the surface facility is a buoyancy power generation device (81), the underwater facility is a fixed device (82), one end of the dynamic cable (10) of the dynamic cable protection system is electrically connected to the buoyancy power generation device (81), and the other end of the dynamic cable (10) is connected to the static cable through the fixed device (82). Claim 11 A wind power generation system according to claim 10, characterized in that a first bending limiting device (11) is installed at a location where the dynamic cable (10) and the buoyancy power generation device (81) are electrically connected; and / or a second bending limiting device (12) is installed at a location where the dynamic cable (10) and the fixed device (82) are connected. Claim 12 A wind power generation system characterized in that, in item 10, the buoyancy power generation device (81) and the adjacent second buoyancy device (30) are connected through a second connecting device (50).

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