Floating wind turbine foundation and wind turbine generator set

Abstract

The present application discloses a floating wind turbine foundation and a wind turbine generator set, wherein the floating wind turbine foundation comprises: a bearing structure, comprising a bearing base and a plurality of first floats connected to the bottom of the bearing base, wherein the plurality of first floats are distributed along the circumference of the bearing base, and the bearing base floats on the water body through the plurality of first floats; a balancing structure, which is connected to the bearing base, and the balancing structure comprises a plurality of guide rails distributed along the radial interval of the bearing base and a movable balancing block arranged on the guide rails, wherein each guide rail is arranged below the bearing base and extends outwards from the center of the bearing base, and the movable balancing block is movably arranged along the length direction of the guide rail. The floating wind turbine foundation of the present application has a better balancing ability and can improve the stability of the wind turbine generator set.

Description

Technical Field

[0001] The present application relates to the technical field of offshore wind power generation, and in particular to a floating wind turbine foundation and a wind turbine generator set. Background Art

[0002] With the rapid development of my country's economy and the increasingly severe contradiction between energy and environmental protection, wind power generation has become the most commercially promising power generation method. Since offshore wind energy resources are more abundant than on land, research on offshore wind power has become a hot topic in the wind power industry.

[0003] At present, most of the offshore wind farms built in the world are near-shore wind farms. Because the deep sea wind energy resources are richer, the wind speed is stronger and more stable, the wind energy utilization rate is high and it will not affect people's lives, so the development trend of offshore wind power from shallow sea to deep sea will be inevitable. However, the deep sea area is usually deep, and the existing fixed wind turbine foundation construction in such sea areas is difficult and costly, and does not have safety and economic advantages. Therefore, it is of great value to design a wind turbine foundation suitable for deep sea areas. Summary of the invention

[0004] The embodiment of the present application provides a wind turbine generator set, wherein the floating wind turbine foundation has better balancing ability, thereby improving the stability of the wind turbine generator set.

[0005] In a first aspect, an embodiment of the present application provides a floating wind turbine foundation, which includes: a bearing structure, including a bearing base and a plurality of first floats connected to the bottom of the bearing base, the plurality of first floats are distributed along the radial direction of the bearing base, and the bearing base floats on the water body through the plurality of first floats; a balancing structure connected to the bearing structure, the balancing structure including a plurality of guide rails distributed at intervals along the circumference of the bearing base and a movable balancing block arranged on the guide rails, each guide rail is arranged below the bearing base and extends outward from the center of the bearing base, and the movable balancing block is movably arranged along the length direction of the guide rail.

[0006] According to one aspect of the embodiment of the present application, at least part of the plurality of guide rails are connected to the corresponding first floating bodies and extend outwardly in a direction away from the center of the supporting base.

[0007] According to one aspect of the embodiment of the present application, the floating wind turbine foundation further includes a balance control assembly configured to control the movement of the movable balance block according to the degree of inclination of the bearing base, so that the bearing base tends to be balanced on the water body.

[0008] According to one aspect of the embodiment of the present application, the floating wind turbine foundation further includes a plurality of second floating bodies, which are distributed in an annular manner around the outer circumference of the bearing structure and are connected to the guide rail and / or the first floating body.

[0009] According to one aspect of the embodiment of the present application, at least some of the second floating bodies among the plurality of second floating bodies are connected to at least some of the first floating bodies in a one-to-one correspondence to form a circulation channel, and the circulation channel can carry the circulation medium.

[0010] According to one aspect of the embodiment of the present application, the first floating body and the second floating body that are in communication are connected to the same guide rail.

[0011] According to one aspect of the embodiment of the present application, the floating wind turbine foundation further includes a central floating body, which is disposed on the inner side of the load-bearing structure, and each first floating body is connected to the central floating body to form a circulation channel.

[0012] According to one aspect of the embodiment of the present application, the first floating body, the second floating body and the central floating body are all spherical floating bodies; the outer periphery of the supporting base is circular, and the diameter of the first floating body satisfies the relationship (1),

[0013]

[0014] Wherein, n is the number of the first floating bodies, n is an integer greater than or equal to 3, and D is the outer diameter of the bearing base.

[0015] According to one aspect of the embodiment of the present application, the ratio of the diameter of the central floating body to the outer diameter of the supporting base is 0.25 to 0.5.

[0016] According to one aspect of an embodiment of the present application, the bearing base includes a bearing flange and a tower transition section, and the tower transition section is connected to the plurality of first floating bodies through the bearing flange.

[0017] According to one aspect of an embodiment of the present application, the floating wind turbine foundation further includes an angle sensor for detecting the tilt angle of the floating wind turbine foundation, and the balance control component controls the movement of the movable balance block according to the tilt angle to make the supporting base tend to balance on the water body.

[0018] According to one aspect of an embodiment of the present application, the floating wind turbine foundation also includes a pressure sensor, which is arranged in at least one of the first float and the second float in the circulation channel. The pressure sensor is used to measure the liquid pressure in the circulation channel to detect the inclination of the floating wind turbine foundation. The balance control component controls the movement of the movable balance block according to the inclination so that the supporting base tends to balance on the water body.

[0019] According to one aspect of an embodiment of the present application, the floating wind turbine foundation also includes a liquid level measuring instrument, which is arranged in at least one of the first float and the second float in the circulation channel. The liquid level measuring instrument is used to measure the liquid level of the circulating medium in the circulation channel to detect the inclination of the floating wind turbine foundation. The balance control component controls the movement of the movable balance block according to the inclination so that the supporting base tends to balance on the water body.

[0020] According to one aspect of an embodiment of the present application, the floating wind turbine foundation also includes a wave meter, which is arranged on the outside of the floating wind turbine foundation and is used to monitor wave information on the outside of the floating wind turbine foundation. The balance control component is configured to control the movement of the movable balance block according to the wave information so that the supporting base tends to balance on the water body; the wave information includes at least one of wave height, wave direction, wave speed and wave period, and the balance control component can control the movable balance block to move a predetermined displacement at a predetermined time according to the wave information.

[0021] According to one aspect of the embodiment of the present application, the floating wind turbine foundation further includes an anchoring structure, the anchoring structure includes an anchor chain, and one end of the anchor chain is connected to the second floating body.

[0022] In a second aspect, an embodiment of the present application provides a wind turbine generator set, which includes a floating wind turbine foundation according to any embodiment of the first aspect above; a tower installed on the floating wind turbine foundation; and a wind turbine installed on the top of the tower.

[0023] According to the floating wind turbine foundation and wind turbine generator set provided in the embodiment of the present application, the floating wind turbine foundation can be connected to the tower and other structures of the wind turbine generator set through the bearing base. Since a plurality of first floating bodies are connected to the bottom of the bearing base, and a plurality of guide rails extending outward from the center of the bearing base are arranged along the circumference of the bearing base, and a movable balancing block is arranged on the guide rail, the guide rail can increase the structural stability of the bearing base, and when the bearing base is tilted, the bearing base can be made to tend to balance by controlling the movement of the movable balancing block, thereby improving the stability of the wind turbine and better meeting the stability requirements of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0025] Figure 1 A schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application;

[0026] Figure 2A schematic structural diagram of a floating wind turbine foundation provided in one embodiment of the present application;

[0027] Figure 3 for Figure 2 A top view of the floating wind turbine foundation shown;

[0028] Figure 4 A schematic structural diagram of a floating wind turbine foundation provided in another embodiment of the present application;

[0029] Figure 5 for Figure 4 A top view of the floating wind turbine foundation shown;

[0030] Figure 6 A schematic diagram of a floating wind turbine foundation in use according to another embodiment of the present application;

[0031] Figure 7 A schematic structural diagram of a floating wind turbine foundation provided in yet another embodiment of the present application;

[0032] Figure 8 for Figure 7 A top view of the floating wind turbine foundation shown;

[0033] Fig. 9 A schematic structural diagram of a floating wind turbine foundation provided in yet another embodiment of the present application.

[0034] Description of reference numerals:

[0035] 10-Floating wind turbine foundation;

[0036] 100-bearing structure; 110-bearing base; 111-bearing flange; 112-tower transition section; 120-first floating body; 130-first connecting pipe; 140-second connecting pipe;

[0037] 200-balance structure; 210-movable balance block; 220-guide rail; 230-track cabin;

[0038] 300-Balance control assembly;

[0039] 410 - second floating body; 420 - third connecting pipe;

[0040] 510-central floating body; 520-fourth connecting pipe;

[0041] 20-Tower;

[0042] 30-fan; 31-nacelle; 32-generator; 33-impeller. DETAILED DESCRIPTION

[0043] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the construction method of the wind turbine foundation, the specific structure of the wind turbine foundation and the wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] In order to better understand the present invention, the following Figures 1 to 9 The floating wind turbine foundation and the wind turbine generator set according to the embodiment of the present application are described in detail.

[0046] Figure 1 A schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application.

[0047] The embodiment of the present application provides a wind turbine generator set, including a floating wind turbine foundation 10, a tower 20 and a wind turbine 30. The tower 20 is installed on the floating wind turbine foundation 10, and the wind turbine 30 is installed on the top of the tower 20. The wind turbine 30 may include a nacelle 31, a generator 32 and an impeller 33. The nacelle 31 is arranged at the top of the tower 20, the generator 32 is arranged in the nacelle 31, and the impeller 33 is connected to the rotor of the generator 32. When the wind acts on the impeller 33, the impeller 33 drives the rotor of the entire generator 32 to rotate, thereby meeting the power generation requirements of the wind turbine generator 32 group.

[0048] In order to ensure the safety performance of the wind turbine 32, it is very necessary to ensure the stability of its floating wind turbine foundation 10. Especially for the offshore wind turbine 32, it not only has to withstand the effect of wind energy, but also has to withstand the impact of seawater, so the safety performance of its floating wind turbine foundation 10 is required to be higher.

[0049] In order to better meet the safety requirements of the wind turbine generator set, the embodiment of the present application further provides a floating wind turbine foundation 10, which has better balance and can meet the stability requirements of the wind turbine generator set. Figure 2 A schematic structural diagram of a floating wind turbine foundation provided in one embodiment of the present application; Figure 3 for Figure 2 A top view of a floating wind turbine foundation is shown.

[0050] The floating wind turbine foundation 10 provided in the embodiment of the present application includes a bearing structure 100 and a balancing structure 200. The bearing structure 100 includes a bearing base 110 and a plurality of first floats 120 connected to the bottom of the bearing base 110. The plurality of first floats 120 are distributed along the circumference of the bearing base 110, and the bearing base 110 floats on the water body through the plurality of first floats 120. The balancing structure 200 is connected to the bearing structure 100, and the balancing structure 200 includes a plurality of guide rails 220 distributed radially at intervals along the bearing base 110 and a movable balancing block 210 disposed on the guide rails 220. Each guide rail 220 is disposed below the bearing base 110 and extends outwards from the center of the bearing base 110, and the movable balancing block 210 is movably disposed along the length direction of the guide rails 220.

[0051] According to the floating wind turbine foundation 10 provided in the embodiment of the present application, it can be connected to the tower 20 and other structures of the wind turbine generator set through the bearing base 110. Since a plurality of first floating bodies 120 are connected to the bottom of the bearing base 110, and a plurality of guide rails 220 extending outward from the center of the bearing base 110 are arranged along the circumference of the bearing base 110, and a movable balancing block 210 is arranged on the guide rail 220, the guide rail 220 can increase the structural stability of the bearing base 110, and when the bearing base 110 is tilted, the bearing base 110 can be made to tend to balance by controlling the movement of the movable balancing block 210, so that the stability of the wind turbine 30 can be improved, and the stability requirements of the wind turbine generator set can be better met.

[0052] It can be understood that when the floating wind turbine foundation 10 tilts under the action of external force, one end of the floating wind turbine foundation 10 will tilt upward and the other end will be pressed downward. The movable balance block 210 can be moved along the guide rail 220 toward the tilted end of the floating wind turbine foundation 10 to increase the weight of the tilted end, thereby reducing or eliminating the tilting degree of the floating wind turbine foundation 10.

[0053] The present application does not impose any specific restrictions on the shape and specific structure of the support base 110. In some optional embodiments, the support base 110 may be a cylindrical structure, the outer periphery of the support base 110 may be circular, the plurality of first floats 120 may be arranged in a circular ring, and the first floats 120 may be arranged at intervals.

[0054] Optionally, the bearing base 110 may include a bearing flange 111 and a tower transition section 112 , the plurality of first floating bodies 120 are connected as a whole via the bearing flange 111 , and the tower transition section 112 is connected to the plurality of first floating bodies 120 via the bearing flange 111 .

[0055] As a preferred embodiment, the cross-section of the load-bearing flange 111 can be L-shaped, including a flange tube and a flange plate vertically connected, the tops of multiple first floating bodies 120 are connected to the flange plate, the bottom of the tower transition section 112 is connected to the flange tube, and the top of the tower transition section 112 is used to connect to the tower 20, and the connection is simple and convenient.

[0056] The present application does not impose any specific restrictions on the shape and number of the first floating body 120. Optionally, the first floating body 120 may be spherical, and the diameter of the first floating body 120 may satisfy the relationship: In order to make two adjacent first floating bodies 120 not contact, D is the outer diameter of the bearing base 110 (i.e., the diameter of the outer circumference of the bearing base 110), n is the number of the first floating bodies 120, and in order to make the bearing base 110 stably supported by the first floating bodies 120, n can be an integer greater than or equal to 3. When the bearing base 110 includes a bearing flange 111 and a tower transition section 112, D can be the outer diameter of the tower transition section 112. As a preferred embodiment, the number of the first floating bodies 120 can be 6, and the ratio of the diameter of the first floating body 120 to the outer diameter of the bearing base 110 can be between 0.25 and 0.5. Of course, the number of the first floating bodies 120 is not limited thereto, and the first floating bodies 120 can also be elliptical, square, etc., all within the protection scope of the present application.

[0057] The guide rail 220 is disposed below the bearing base 110 and extends outward from the center of the bearing base 110, and at least part of the plurality of guide rails 220 is connected to the corresponding first floating body 120 and extends outward in a direction away from the center of the bearing base 110. By connecting the guide rail 220 to the first floating body 120, the guide rail 220 is located below the bearing base 110 to facilitate the fixing of the guide rail 220. Optionally, the guide rail 220 may be extended outward along the radial direction of the bearing base 110, and the guide rail 220 may pass through the first floating body 120 from the center of the bearing base 110 to ensure the length of the guide rail 220.

[0058] It should be noted that the ends of the guide rails 220 close to the center of the supporting base 110 may be connected to each other or may not be connected, which is within the protection scope of the present application.

[0059] The movable balancing weight 210 is used to make the supporting base 110 tend to balance when the supporting base 110 is tilted. In order to save space and achieve a better balancing effect, the movable balancing weight 210 is preferably a solid structure made of high-density materials such as steel and lead, or a sealed shell can also be used. The structure in which the sealed shell carries liquid, etc., is within the protection scope of this application.

[0060] Figure 4 A schematic structural diagram of a floating wind turbine foundation provided in another embodiment of the present application; Figure 5 for Figure 4 A top view of the floating wind turbine foundation shown; Figure 6 A schematic diagram of the use status of a floating wind turbine foundation provided in yet another embodiment of the present application.

[0061] In some optional embodiments, the floating wind turbine foundation 10 provided in the embodiments of the present application may further include a plurality of second floats 410 , which may be distributed in a ring around the outer periphery of the load-bearing structure 100 and connected to the guide rail 220 and / or the first float 120 ; providing the second floats 410 may increase the stability of the floating wind turbine foundation 10 .

[0062] A plurality of second floats 410 are distributed in an annular manner around the outer circumference of the bearing structure 100 and are connected to the guide rail 220 and / or the first float 120. It is understandable that the second float 410 can be connected to an end of the guide rail 220 away from the center of the bearing base 110, so that the second float 410 can be fixed, the connection stability of the guide rail 220 can be increased, and the structural reliability of the floating wind turbine foundation 10 can be increased.

[0063] Of course, the second float 410 can also be connected to the first float 120 instead of being directly connected to the guide rail 220. This structure can also be used to adjust the stability of the floating wind turbine foundation 10. The second float 410 can also be connected to the first float 120 and the guide rail 220 at the same time to increase the stability of the floating wind turbine foundation 10.

[0064] The present application does not impose any specific restrictions on the number, shape, size, etc. of the second floating bodies 410. As a preferred embodiment, the number of the second floating bodies 410 can be consistent with the first floating bodies 120, and the second floating bodies 410 and the first floating bodies 120 can be arranged one by one. Of course, the number of the second floating bodies 410 can also be greater than the first floating bodies 120, which can further increase the stability of the floating wind turbine foundation 10. Optionally, the second floating body 410 can be spherical, and the diameter of the second floating body 410 can be the same as that of the first floating body 120. Of course, the diameter of the second floating body 410 can also be greater than or less than the first floating body 120.

[0065] In some optional embodiments, at least some of the second buoys 410 among the plurality of second buoys 410 are connected to at least some of the first buoys 120 in a one-to-one correspondence to form a circulation channel, and the circulation channel can carry a circulation medium. The circulation medium can be water or other freely movable liquids. When the floating wind turbine foundation 10 is in use, the circulation medium can be loaded in the circulation channel to increase the weight of the floating wind turbine foundation 10 and improve the stability of the floating wind turbine foundation 10.

[0066] It is understandable that when the floating wind turbine foundation 10 tilts under the action of an external force, one end of the floating wind turbine foundation 10 tilts upward and the other end is pressed downward, and the circulating medium in the circulation channel will flow from the tilted end to the pressed end. Since the plurality of second buoys 410 are distributed in an annular manner around the outer circumference of the bearing structure 100, when the floating wind turbine foundation 10 tilts under the action of an external force, at the tilted end of the floating wind turbine foundation 10, the circulating medium will flow from the second buoy 410 to the first buoy 120, and at the pressed end of the floating wind turbine foundation 10, the circulating medium will flow from the first buoy 120 to the second buoy 410.

[0067] Optionally, the connected first floating body 120 and the second floating body 410 may be connected to the same guide rail 220; preferably, the extension direction of the guide rail 220 may be parallel to the center line direction of the first floating body 120 and the second floating body 410. When the floating wind turbine foundation 10 tilts under the action of external force, this structural setting can make the flow direction of the circulating medium in the connected first floating body 120 and the second floating body 410 consistent with the extension direction of the guide rail 220 (i.e., the moving direction of the movable balance block 210), so as to facilitate the calculation of the moving distance of the movable balance block 210.

[0068] The following describes the movement of the movable balance block 210 by taking the end of the floating wind turbine foundation 10 that is pressed down when tilting as an example. When the floating wind turbine foundation 10 is tilted under the action of an external force, at the end of the floating wind turbine foundation 10 that is pressed down, the circulating medium with a weight of △m in the first floating body 120 flows into the second floating body 410. In order to make the floating wind turbine foundation 10 tend to balance, the moving direction of the movable balance block 210 is opposite to the flow direction of the circulating medium. The moving distance of the movable balance block 210 can satisfy the relationship m×d=H1×△m, that is, the bending moment generated by the movement of the movable balance block 210 can be the same as the bending moment generated by the flow of the circulating medium, where m is the mass of the movable balance block 210, d is the moving distance of the movable balance block 210, and H1 is the center distance from the first floating body 120 to the second floating body 410.

[0069] Figure 7 A schematic structural diagram of a floating wind turbine foundation provided in yet another embodiment of the present application; Figure 8 for Figure 7 A top view of a floating wind turbine foundation is shown.

[0070] In some optional embodiments, the floating wind turbine foundation 10 provided in the embodiment of the present application may further include a central floating body 510, which is disposed inside the load-bearing structure 100, and each first floating body 120 and the central floating body 510 may be connected to form a circulation channel. The central floating body 510 may further increase the structural strength and stability of the floating wind turbine foundation 10, and may connect the second floating bodies 410 and the central floating body 510 at both ends.

[0071] Optionally, one end of each guide rail 220 away from the second floating body 410 may be connected to the first floating body 120 , which can further increase the structural strength of the floating wind turbine foundation 10 .

[0072] Optionally, the first floating body 120 , the second floating body 410 and the central floating body 510 that are connected to each other may be connected to the same guide rail 220 to facilitate the control of the movement of the movable balancing weight 210 .

[0073] The present application does not impose any specific restrictions on the number, shape, size, etc. of the central float 510. There may be only one central float 510, or there may be multiple central floats 510, and the multiple central floats 510 may be distributed in a ring shape. The central float 510 may be spherical, or may be square, elliptical, or the like. As a preferred embodiment, the central float 510 may be spherical, and the ratio of the diameter of the central float 510 to the outer diameter of the supporting base 110 may be between 0.25 and 0.5.

[0074] It is understandable that, in order to facilitate the transportation and storage of the floating wind turbine foundation 10, the first floating body 120, the second floating body 410 and the central floating body 510 can be detachably connected and then assembled into one body when in use.

[0075] In order to achieve the communication between the first buoy 120 and the second buoy 410 and the central buoy 510, optionally, the first buoy 120 may be connected with a first communication pipe 130 and a second communication pipe 140, the second buoy 410 may be connected with a third communication pipe 420, and the central buoy 510 may be connected with a plurality of fourth communication pipes 520. The third communication pipe 420 on the second buoy 410 is detachably connected to the first communication pipe 130 on the corresponding first buoy 120, and the second buoy 410 is connected to the first buoy 120. The fourth communication pipe 520 on the central buoy 510 is detachably connected to the second communication pipe 140 on the corresponding first buoy 120, and the first buoy 120 is connected to the central buoy 510. As an optional embodiment, the third communication pipe 420 is flange-connected to the first communication pipe 130, and the fourth communication pipe 520 is flange-connected to the second communication pipe 140, which is simple and convenient to disassemble and assemble.

[0076] Optionally, the floating wind turbine foundation 10 provided in the embodiment of the present application may further include a track cabin 230, the track is arranged in the track cabin 230, and the track cabin 230 may include a first section, a second section, and a third section that are sequentially detachably connected, the first section is connected to the central floating body 510, the second section is connected to the first floating body 120, and the third section is connected to the second floating body 410. During assembly, the first section, the second section, and the third section of the track cabin 230 are sequentially connected to connect the central floating body 510, the first floating body 120, and the second floating body 410, and then the track is fixed in the track cabin 230. As an optional embodiment, the first section of the track cabin 230 is flange-connected to the second section, and the second section is flange-connected to the third section.

[0077] Fig. 9 A schematic structural diagram of a floating wind turbine foundation provided in yet another embodiment of the present application.

[0078] The floating wind turbine foundation 10 provided in the embodiment of the present application can be balanced by moving the movable balancing block 210 along the length direction of the guide rail 220 when the supporting base 110 is tilted. In some optional embodiments, a balancing control component 300 can also be provided. The balancing control component 300 is configured to control the movement of the movable balancing block 210 according to the degree of tilt of the supporting base 110. By providing the balancing control component 300, automatic adjustment of the balance of the floating wind turbine foundation 10 can be achieved.

[0079] Optionally, the balance control assembly 300 may include a controller.

[0080] Optionally, a platform can be provided in the tower transition section of the bearing foundation, and the balance control assembly 300 can be provided on the platform, which can reduce the impact of the external environment on the balance control assembly 300, ensure the accuracy of the balance control assembly 300 and extend its service life.

[0081] There are many ways to determine the degree of inclination of the supporting base 110. It is understandable that when the floating wind turbine foundation 10 is tilted under the action of external force, one end of the floating wind turbine foundation 10 is tilted upward and the other end is pressed downward, and the flow medium in the flow channel will flow from the tilted end to the pressed end, and the degree of inclination of the floating wind turbine foundation 10 can be known according to the changes in the liquid level of the flow medium.

[0082] In some optional embodiments, the tilt of the floating wind turbine foundation 10 can be detected by measuring the liquid pressure in the circulation channel. The floating wind turbine foundation 10 can include a pressure sensor, which is disposed in at least one of the first floating body 120 and the second floating body 410 in the circulation channel. As a preferred embodiment, the pressure sensor can be disposed at the bottom of the cavity of the second floating body 410.

[0083] When the floating wind turbine foundation 10 is tilted, the circulating medium in the circulation channel flows, and the liquid pressure at the location of the pressure sensor changes. The balance control component 300 can calculate the mass of the circulating medium increased or decreased at the corresponding position through the liquid pressure measured by the pressure sensor, and then calculate the moving distance of the movable balance block 210.

[0084] In some other optional embodiments, the tilt of the floating wind turbine foundation 10 can be detected by measuring the liquid level of the circulating medium in the circulation channel. The floating wind turbine foundation 10 may include a liquid level measuring instrument, which is arranged in at least one of the first float 120 and the second float 410 in the circulation channel. As a preferred embodiment, the liquid level measuring instrument can be arranged in the second float 410. Taking the liquid level measuring instrument arranged in the second float 410 as an example, the liquid level measuring instrument measures the liquid level of the circulating medium in the second float 410, and the balance control component 300 can calculate the mass of the circulating medium added or reduced in the second float 410 according to the liquid level measured by the liquid level measuring instrument, and then the moving distance of the movable balance block 210 can be obtained.

[0085] Of course, the inclination of the supporting base 110 can also be directly determined by measuring the inclination angle of the floating wind turbine foundation 10. Optionally, the floating wind turbine foundation 10 provided in the embodiment of the present application can include an angle sensor. The inclination angle of the floating wind turbine foundation 10 is detected by the angle sensor. The balance control component 300 can control the movement of the movable balance block 210 according to the inclination angle measured by the angle sensor, thereby making the supporting base 110 tend to balance on the water body. The angle sensor can be set on the outside of the floating wind turbine foundation 10 to measure the inclination angle of the supporting base 110 relative to the horizontal plane, and can also be set in the first floating body 120 or the second floating body 410 or the central floating body 510 to measure the inclination angle of the circulating medium in the circulation channel.

[0086] In some optional embodiments, the floating wind turbine foundation 10 provided in the embodiment of the present application may also include a wave meter, which is arranged on the outside of the floating wind turbine foundation 10 and is used to monitor the wave information on the outside of the floating wind turbine foundation 10, and the balance control component 300 is configured to be able to control the movement of the movable balance block 210 according to the wave information, so that the supporting base 110 tends to balance on the water body. Among them, the wave information may include at least one of the wave height, wave direction, wave speed and wave period, and the balance control component 300 can control the movable balance block 210 to move a predetermined displacement at a predetermined time according to the wave information. According to the wave information, the balance control component 300 can control the movable balance block 210 to move in advance, so that the floating wind turbine foundation 10 remains balanced and stable, and can better meet the stability requirements of the wind turbine generator set.

[0087] In some optional embodiments, the floating wind turbine foundation 10 provided in the embodiment of the present application may further include an anchoring structure, which may specifically include an anchor chain, one end of which may be connected to at least one of the first floating body 120, the second floating body 410 and the central floating body 510. Preferably, one end of the anchor chain may be connected to the second floating body 410 located at the outermost side to save the length of the anchor chain. When the floating wind turbine foundation 10 is in use, the other end of the anchoring structure may be connected to a stable anchor foundation, so that the floating wind turbine foundation 10 can only float in a predetermined area, which can further ensure the safety and stability of the floating wind turbine foundation 10.

[0088] According to the embodiments described above in the present application, these embodiments do not describe all the details in detail, nor do they limit the present application to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A floating wind turbine foundation, characterized in that: include: A bearing structure (100) comprises a bearing base (110) and a plurality of first floating bodies (120) connected to the bottom of the bearing base (110), wherein the plurality of first floating bodies (120) are distributed along the circumference of the bearing base (110), and the bearing base (110) floats on a water body through the plurality of first floating bodies (120); a balancing structure (200) connected to the bearing structure (100), the balancing structure (200) comprising a plurality of guide rails (220) radially spaced and distributed along the bearing base (110) and a movable balancing block (210) disposed on the guide rails (220), each of the guide rails (220) being disposed below the bearing base (110) and extending outwards from the center of the bearing base (110), and the movable balancing block (210) being movably disposed along the length direction of the guide rails (220); The floating wind turbine foundation further comprises a plurality of second floating bodies (410), the plurality of second floating bodies (410) being distributed in an annular shape around the outer circumference of the bearing structure (100) and being connected to the guide rail (220) and / or the first floating body (120).

2. The floating wind turbine foundation according to claim 1, characterized in that: At least part of the plurality of guide rails (220) is connected to the corresponding first floating body (120) and extends outward in a direction away from the center of the supporting base (110).

3. The floating wind turbine foundation according to claim 1, characterized in that: It also includes a balance control component (300) configured to control the movement of the movable balance block (210) according to the degree of inclination of the supporting base (110), so as to make the supporting base (110) tend to be balanced on the water body.

4. The floating wind turbine foundation according to claim 3, characterized in that: At least some of the second floating bodies (410) among the plurality of second floating bodies (410) are connected to at least some of the first floating bodies (120) in a one-to-one correspondence to form a circulation channel, and the circulation channel is capable of carrying a circulation medium.

5. The floating wind turbine foundation according to claim 4, characterized in that: The first floating body (120) and the second floating body (410) which are in communication are connected to the same guide rail (220).

6. The floating wind turbine foundation according to claim 4, characterized in that: It also includes a central float (510), wherein the central float (510) is arranged inside the bearing structure (100), and each of the first floats (120) is connected to the central float (510) to form the circulation channel.

7. The floating wind turbine foundation according to claim 6, characterized in that: The first floating body (120), the second floating body (410) and the central floating body (510) are all spherical floating bodies; the outer periphery of the supporting base (110) is circular, and the diameter of the first floating body (120) satisfies the relationship (1), Formula (1) Wherein, n is the number of the first floating bodies (120), n is an integer greater than or equal to 3, and D is the outer diameter of the supporting base (110).

8. The floating wind turbine foundation according to claim 7, characterized in that: The ratio of the diameter of the central floating body (510) to the outer diameter of the supporting base (110) is 0.25 to 0.

5.

9. The floating wind turbine foundation according to claim 1, characterized in that: The bearing base (110) comprises a bearing flange (111) and a tower transition section (112); the tower transition section (112) is connected to the plurality of first floating bodies (120) via the bearing flange (111).

10. The floating wind turbine foundation according to claim 3, characterized in that: It also includes an angle sensor for detecting the tilt angle of the floating wind turbine foundation, and the balance control component (300) controls the movement of the movable balance block (210) according to the tilt angle, so that the bearing base (110) tends to balance on the water body.

11. The floating wind turbine foundation according to claim 4, characterized in that: It also includes a pressure sensor, which is arranged in at least one of the first floating body (120) and the second floating body (410) in the circulation channel, and the pressure sensor is used to measure the liquid pressure in the circulation channel to detect the inclination of the floating wind turbine foundation. The balance control component (300) controls the movement of the movable balance block (210) according to the inclination, so that the supporting base (110) tends to balance on the water body.

12. The floating wind turbine foundation according to claim 4, characterized in that: It also includes a liquid level measuring instrument, which is arranged in at least one of the first floating body (120) and the second floating body (410) in the circulation channel, and the liquid level measuring instrument is used to measure the liquid level of the circulation medium in the circulation channel to detect the inclination of the floating wind turbine foundation. The balance control component (300) controls the movement of the movable balance block (210) according to the inclination, so that the supporting base (110) tends to balance on the water body.

13. The floating wind turbine foundation according to claim 3, characterized in that: It also includes a wave meter, which is arranged outside the floating wind turbine foundation and is used to monitor wave information outside the floating wind turbine foundation. The balance control component (300) is configured to control the movement of the movable balance block (210) according to the wave information, so that the supporting base (110) tends to balance on the water body; The wave information includes at least one of wave height, wave direction, wave speed and wave period, and the balance control component (300) can control the movable balance block (210) to move a predetermined displacement at a predetermined time according to the wave information.

14. The floating wind turbine foundation according to claim 3, characterized in that: The floating wind turbine foundation further comprises: The anchoring structure comprises an anchor chain, one end of which is connected to the second floating body (410).

15. A wind turbine generator set, characterized in that: include: A floating wind turbine foundation (10), wherein the floating wind turbine foundation (10) is the floating wind turbine foundation (10) according to any one of claims 1 to 14; A tower (20) installed on the floating wind turbine foundation (10); A fan (30) is installed on the top of the tower (20).

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