Fixed structures, floating wind turbines and their installation methods, and wind farms

Abstract

This invention provides a fixed structure, a floating wind turbine, its installation method, and a wind farm. The fixed structure includes: a floating foundation for supporting the wind turbine; multiple first connecting cables, each with its first and second ends connected to different positions on the floating foundation; multiple second connecting cables, each with its first end connected to an anchor foundation, the number of second connecting cables being the same as the number of first connecting cables; and multiple first connectors, each corresponding to one of the second connecting cables, with the first end of each connector fixedly connected to a second connecting cable, and the middle portion of each first connecting cable slidably connected to the second end of the connector. The technical solution of this application effectively solves the technical problem of poor connection stability between floating foundations and anchor foundations in related technologies.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power technology, and more specifically, to a fixed structure, a floating wind power device and its installation method, as well as a wind farm. Background Technology

[0002] Offshore wind power, as a renewable energy source, is gradually becoming an important part of the global energy structure. Compared to onshore wind farms, offshore wind power has more abundant wind energy resources and does not impact the terrestrial ecological environment. At the same time, as a clean energy source, offshore wind power can also reduce greenhouse gas emissions. Offshore wind power is gradually expanding from nearshore to deep-sea areas, and the foundation types for offshore wind power are evolving from gravity-type, multi-legged, high-pile cap, and monopile foundations to jacket foundations and floating foundations.

[0003] The mooring system for floating wind power is very expensive, and the mooring system is closely related to the safety of floating wind power. Therefore, it is necessary to ensure the safety and reliability of the mooring system while also being economical.

[0004] In related technologies, floating foundations are generally connected to anchoring devices via two mooring lines. The first mooring line connects the floating foundation and the buoy, while the second mooring line connects the anchoring device and the first mooring line. In the event of an abnormal situation such as a typhoon, either the first or second mooring line may break under the tension of the floating foundation and the anchoring device. If the mooring line breaks, the wind turbine will drift away with the seawater, causing asset loss and making it impossible to guarantee the stable use of the floating wind turbine. Summary of the Invention

[0005] The main objective of this invention is to provide a fixed structure, a floating wind power device and its installation method, as well as a wind farm, to solve the technical problem of poor connection stability between floating foundations and anchored foundations in related technologies.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a fixed structure for a wind turbine generator is provided, comprising: a floating foundation for supporting the wind turbine generator; a plurality of first connecting cables, each first connecting cable having a first end and a second end connected to different positions on the floating foundation; a plurality of second connecting cables, each second connecting cable having a first end connected to an anchor foundation, the number of second connecting cables being the same as the number of first connecting cables; and a plurality of first connectors, each first connector being correspondingly provided with one of the plurality of second connecting cables, the first end of each first connector being fixedly connected to a second connecting cable, and the middle portion of each first connecting cable being slidably connected to the second end of the first connector.

[0007] Furthermore, the floating foundation includes multiple sidewalls, and multiple first connecting cables are connected to different sidewalls of the floating foundation. The first end and the second end of each first connecting cable are respectively connected to different positions of the same sidewall of the floating foundation.

[0008] Furthermore, the fixed structure also includes n connection groups, which are connected between the middle of multiple first connecting cables and multiple first connecting members, where n is a positive integer greater than or equal to 1; each connection group includes multiple third connecting cables, the number of which is the same as the number of first connecting cables; the middle of each third connecting cable in the connection group furthest from the floating foundation is slidably connected to the second end of the first connecting member, and the two ends of each third connecting cable in the connection group closest to the floating foundation are slidably connected to the middle of two adjacent first connecting cables respectively.

[0009] Furthermore, the fixing structure also includes multiple second connectors, and one end of each third connecting cable in the connection group closest to the floating foundation in the n connection groups is slidably connected to the middle of a first connecting cable through a second connector.

[0010] Furthermore, when n is 1, for one of the third connecting cables, the first end of the third connecting cable is fixedly connected to the first end of a second connecting member, the second end of the second connecting member connected to the first end of the third connecting cable is slidably connected to a first connecting cable, the second end of the third connecting cable is fixedly connected to the first end of another second connecting member, the second end of the second connecting member connected to the second end of the third connecting cable is slidably connected to another first connecting cable, and the middle part of the third connecting cable is slidably connected to the second end of the first connecting member.

[0011] Furthermore, when n is greater than 1, for any two adjacent connection groups, the two ends of each third connection cable in the connection group farther from the floating foundation are slidably connected to the middle of the two adjacent third connection cables in the connection group closer to the floating foundation, and the three interconnected third connection cables are arranged adjacently.

[0012] Furthermore, the fixed structure also includes multiple third connectors. For any two adjacent connection groups, one end of each third connecting cable in the connection group farther from the floating foundation is slidably connected to the middle of a third connecting cable in the connection group closer to the floating foundation via a third connector.

[0013] Furthermore, for any two adjacent connection groups, the first end of each third connecting cable in the connection group furthest from the floating foundation is fixedly connected to the first end of a third connector, the second end of each third connecting cable is fixedly connected to the first end of another third connector, and the second end of a third connector connected to one end of a third connecting cable is slidably connected to the middle of a third connecting cable in the connection group closest to the floating foundation.

[0014] Furthermore, the ratio of the cross-sectional area of ​​each first connecting cable to the cross-sectional area of ​​each third connecting cable in the connection group closest to the floating foundation among the n connection groups is 0.4 to 0.9; the ratio of the cross-sectional area of ​​each third connecting cable in the connection group closest to the floating foundation among any two adjacent connection groups to the cross-sectional area of ​​each third connecting cable in the connection group furthest from the floating foundation among the n connection groups is 0.4 to 0.9; and the ratio of the cross-sectional area of ​​each third connecting cable in the connection group furthest from the floating foundation among the n connection groups to the cross-sectional area of ​​each second connecting cable is 0.4 to 0.9.

[0015] Furthermore, the first connector includes a connecting block, a fixing part disposed at a first end of the connecting block, an installation space disposed within the connecting block, and a connecting shaft disposed within the installation space. The fixing part forms the first end of the first connector, and the connecting shaft forms the second end of the first connector.

[0016] According to a second aspect of the present invention, a floating wind power device is provided, comprising: a wind turbine generator, a fixed structure, and a dynamic submarine cable connected to the wind turbine generator, wherein the fixed structure is the aforementioned fixed structure, and the wind turbine generator is mounted on the fixed structure.

[0017] According to a third aspect of the present invention, a wind farm is provided, comprising: a plurality of floating wind turbines and a plurality of static submarine cables arranged at intervals, wherein the plurality of static submarine cables are connected one-to-one with the dynamic submarine cables of the plurality of floating wind turbines, and the floating wind turbines are the aforementioned floating wind turbines.

[0018] According to a fourth aspect of the present invention, a method for installing a floating wind turbine is provided for installing a floating wind turbine, wherein the floating wind turbine is the aforementioned floating wind turbine. The method includes: fixing the first ends of a plurality of second connecting cables to an anchor foundation; connecting both ends of each of the plurality of first connecting cables to a floating foundation; and slidably connecting the second ends of the plurality of second connecting cables to the middle portions of the plurality of first connecting cables.

[0019] Using the technical solution of this invention, a floating foundation is used to support wind turbine generators. The first end and second end of each first connecting cable are connected to different positions on the floating foundation. The first end of each second connecting cable is connected to an anchoring foundation, and the number of second connecting cables is the same as the number of first connecting cables. Multiple first connectors are correspondingly arranged with multiple second connecting cables; the first end of each first connector is fixedly connected to a second connecting cable, and the middle portion of each first connecting cable is slidably connected to the second end of the first connector. Through this arrangement, the floating foundation can support the wind turbine generators, facilitating offshore power generation. The first connecting cable is connected to the floating foundation, and the second connecting cable is connected to both the first end of the first connector and the anchor foundation. The second end of the first connector is slidably connected to the middle of the first connecting cable. Thus, the floating foundation and the anchor foundation can be connected under the action of the first connecting cable, the second connecting cable, the first connector, and the anchor foundation, thereby achieving the fixation of the floating foundation. There are multiple first connecting cables, and the first and second ends of each first connecting cable are connected to different positions on the floating foundation, making the connection between the floating foundation and the anchor foundation more stable. When one or more first or second connecting cables break, the remaining first and second connecting cables can stably connect the floating foundation and the anchor foundation. This avoids the situation where, when only one first connecting cable is used, the floating foundation and the anchor foundation become disconnected after the first connecting cable breaks, thus preventing the floating foundation from drifting away. The middle of each first connecting cable is slidably connected to the second end of the first connecting member, allowing the second connecting cable, which is fixedly connected to the first end of the first connecting member, to slide relative to the middle of the first connecting cable. This allows the relative position between the second connecting cable and the floating foundation to change when the floating foundation is subjected to wind or waves. This avoids the possibility of breakage of the second and first connecting cables when the floating foundation is subjected to large forces due to their fixed connection, making the fixing structure more adaptable to the marine environment and resulting in a more stable connection between the floating foundation and the anchor foundation. The second end of the first connecting member facilitates the sliding of the second connecting cable relative to the first connecting cable. Therefore, the technical solution of this application effectively solves the technical problem of poor connection stability between floating foundations and anchor foundations in related technologies. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 A top view schematic diagram of a first embodiment of the fixing structure according to the present invention is shown;

[0022] Figure 2 A top view schematic diagram of a second embodiment of the fixing structure according to the present invention is shown;

[0023] Figure 3 It shows Figure 2 A top view diagram when the number of connection groups in the fixed structure is 2;

[0024] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the first connecting member of the fixed structure;

[0025] Figure 5 A three-dimensional structural schematic diagram of an embodiment of a floating wind power device according to the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Floating foundation; 11. Sidewall; 20. First connecting cable; 30. Second connecting cable; 40. Anchoring foundation; 50. First connector; 51. Connecting block; 52. Fixing part; 53. Installation space; 54. Connecting shaft; 60. Connecting assembly; 61. Third connecting cable; 70. Second connector; 80. Third connector; 100. Wind turbine unit; 110. Dynamic submarine cable. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] like Figure 1 and Figure 4 As shown, the fixing structure of the wind turbine in Embodiment 1 includes: a floating foundation 10, a plurality of first connecting cables 20, a plurality of second connecting cables 30, and a plurality of first connectors 50. The floating foundation 10 is used to support the wind turbine 100. The plurality of first connecting cables 20 have their first and second ends connected to different positions on the floating foundation 10, respectively. The first end of each second connecting cable 30 is connected to an anchoring foundation 40, and the number of second connecting cables 30 is the same as the number of first connecting cables 20. The plurality of first connectors 50 are arranged in a one-to-one correspondence with the plurality of second connecting cables 30; the first end of the first connector 50 is fixedly connected to the second connecting cable 30, and the middle portion of each first connecting cable 20 is slidably connected to the second end of the first connector 50.

[0032] Using the technical solution of this invention, a floating foundation 10 is used to support a wind turbine generator 100. The first end and second end of each first connecting cable 20 are connected to different positions on the floating foundation 10. The first end of each second connecting cable 30 is connected to an anchoring foundation 40, and the number of second connecting cables 30 is the same as the number of first connecting cables 20. Multiple first connecting members 50 are correspondingly arranged with multiple second connecting cables 30, with the first end of the first connecting member 50 fixedly connected to the second connecting cable 30, and the middle portion of the first connecting cable 20 slidably connected to the second end of the first connecting member 50. Through the above arrangement, the floating foundation 10 can support the wind turbine generator 100, facilitating the wind turbine generator 100 to generate electricity at sea. The first connecting cable 20 is connected to the floating foundation 10, and the second connecting cable 30 is connected to the first end of the first connecting member 50 and the anchoring foundation 40. The second end of the first connecting member 50 is slidably connected to the middle of the first connecting cable 20. That is, under the action of the first connecting cable 20, the second connecting cable 30, the first connecting member 50 and the anchoring foundation 40, the floating foundation 10 and the anchoring foundation 40 can be connected, thereby fixing the floating foundation 10. There are multiple first connecting cables 20, and the first end and the second end of each first connecting cable 20 are connected to different positions of the floating foundation 10, making the connection between the floating foundation 10 and the anchoring foundation 40 more stable. When one first connecting cable 20 or the second connecting cable 30 breaks, the remaining first connecting cables 20 and the second connecting cables 30 can stably connect the floating foundation 10 and the anchoring foundation 40. That is, when only one first connecting cable 20 is set, if the first connecting cable 20 breaks, the floating foundation 10 will detach from the anchoring foundation 40, thereby preventing the floating foundation 10 from drifting away. The middle portion of each first connecting cable 20 is slidably connected to the second end of the first connecting member 50, allowing the second connecting cable 30, which is fixedly connected to the first end of the first connecting member 50, to slide relative to the middle portion of the first connecting cable 20. This allows the relative position between the second connecting cable 30 and the floating foundation 10 to change when the floating foundation 10 is subjected to wind or waves. This avoids the possibility of breakage of the second connecting cable 30 and the first connecting cable 20 when the floating foundation 10 is subjected to significant stress, as the second connecting cable 30 is fixedly connected to the first connecting cable 20. This makes the fixing structure more adaptable to the marine environment, resulting in a more stable connection between the floating foundation 10 and the anchor foundation 40. The second end of the first connecting member 50 facilitates the sliding of the second connecting cable 30 relative to the first connecting cable 20. Therefore, the technical solution of this application effectively solves the technical problem of poor connection stability between the floating foundation 10 and the anchor foundation 40 in related technologies.

[0033] It should be noted that "multiple first connecting cables 20" refers to two or more first connecting cables 20, "multiple second connecting cables 30" refers to two or more second connecting cables 30, and "multiple first connectors 50" refers to two or more first connectors 50. The middle portion of a first connecting cable 20 refers to the position between its first end and second end, and is not limited to a symmetrical position between the first and second ends. "Sliding connection between the middle portion of each first connecting cable 20 and the second end of the first connector 50" means that the middle portion of the first connecting cable 20 and the second end of the first connector 50 slide relative to each other without disengaging. The first and second ends of the first connector 50 are positioned opposite each other.

[0034] like Figure 1 As shown, in Embodiment 1, the floating foundation 10 includes multiple sidewalls 11, and multiple first connecting cables 20 are connected to different sidewalls 11 of the floating foundation 10. The first end and second end of each first connecting cable 20 are respectively connected to different positions on the same sidewall 11 of the floating foundation 10. This arrangement makes the floating foundation 10 and the multiple first connecting cables 20 more stable, preventing the multiple first connecting cables 20 from breaking simultaneously during use, and preventing the multiple first connecting cables 20 from simultaneously detaching from the floating foundation 10, thus ensuring the normal use of the fixed structure.

[0035] It should be noted that "multiple sidewalls 11" means that the floating foundation 10 has at least two sidewalls 11. "Multiple first connecting cables 20 connected to different sidewalls 11 of the floating foundation 10" means that each first connecting cable can be connected to the inner or outer sidewall.

[0036] Specifically, in Embodiment 1, the floating foundation 10 has three sidewalls 11, each of which is connected to a first connecting cable 20. Alternatively, in an embodiment not shown in the figure, a first connecting cable 20 can be provided on each of the two sidewalls 11. The floating foundation 10 is shaped like a triangular prism and consists of two hollow triangular plates and three pillars located between them. The three pillars are respectively connected to the three corners of the triangular plates.

[0037] In Embodiment 1, the middle part of the first connecting cable 20 is connected to a first connector 50.

[0038] The difference between Embodiment 1 and Embodiment 2 is that in Embodiment 2, n connecting groups 60 are further provided between the first connecting cable 20 and the second connecting cable 30.

[0039] like Figure 2 and Figure 3As shown, in Embodiment 2, the fixing structure further includes n connection groups 60, which are connected between the middle portions of multiple first connecting cables 20 and multiple first connecting members 50, where n is a positive integer greater than or equal to 1. Each connection group 60 includes multiple third connecting cables 61, the number of which is the same as the number of first connecting cables 20. The middle portion of each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 is slidably connected to the second end of the first connecting member 50, and the two ends of each third connecting cable 61 in the connection group 60 closest to the floating foundation 10 are slidably connected to the middle portions of two adjacent first connecting cables 20, respectively. The n connection groups 60 make the connection between the middle portion of the first connecting cable 20 and the multiple first connecting members 50 more stable. Each connecting member connects to a second connecting cable 30, making the connection between the first connecting cable 20 and the second connecting cable 30 more stable, thereby making the connection between the floating foundation 10 and the anchoring foundation 40 more stable. In the n connection groups 60 furthest from the floating foundation 10, the middle of each third connecting cable 61 is slidably connected to the second end of the first connecting member 50, allowing relative sliding between the middle of the third connecting cable 61 and the second end of the first connecting member 50. This allows the relative position between the third connecting cable 61 and the first connecting member 50 to change when the floating foundation 10 is subjected to wind or waves. In other words, the relative position between the third connecting cable 61 and the second connecting cable 30 can change, avoiding the possibility of the third connecting cable 61 and the second connecting cable 30 breaking when the floating foundation 10 is subjected to large forces due to the fixed connection between the second connecting cable 30 and the third connecting cable 61. This makes the fixed structure more adaptable to the marine environment, and also makes the connection between the floating foundation 10 and the anchor foundation 40 more stable. In the n connection groups 60 closest to the floating foundation 10, the two ends of each third connecting cable 61 are slidably connected to the middle of the two adjacent first connecting cables 20. This allows the middle of the third connecting cable 61 to slide relative to the middle of the two adjacent first connecting cables 20 when the floating foundation 10 is subjected to wind or waves. This avoids the possibility of the third connecting cable 61 and the first connecting cable 20 breaking when the floating foundation 10 is subjected to large forces due to the fixed connection between the third connecting cable 61 and the first connecting cable 20. This makes the fixed structure more adaptable to the marine environment and makes the connection between the floating foundation 10 and the anchor foundation 40 more stable.

[0040] It should be noted that the connection group 60 furthest from the floating foundation 10 refers to the connection group 60 with the largest distance from the center of the floating foundation 10 among the n connection groups 60, and the connection group 60 closest to the floating foundation 10 refers to the connection group 60 with the smallest distance from the center of the floating foundation 10 among the n connection groups 60.

[0041] Specifically, the arrangement of the first connecting cable 20, the third connecting cable 61, and the second connecting cable 30 allows the connection structure between the floating foundation 10 and the anchoring foundation 40 (i.e., the first connecting cable 20, the third connecting cable 61, and the second connecting cable 30) to have more of its length suspended in the ocean. This also shortens the length of the section lying on the seabed (the part in contact with the seabed), reducing the area occupied by the multiple first connecting cables 20, the multiple third connecting cables 61, and the multiple second connecting cables 30 by more than 20%. When at least one of the multiple first connecting cables 20 or a connecting group 60 closest to the floating foundation 10 suddenly breaks, the connecting groups 60 further away from the floating foundation 10 can still provide tension for a short period, preventing the fixed structure from losing its restoring force and drifting away directly, thus improving the redundancy of the fixed structure.

[0042] like Figure 2 and Figure 3 As shown, in Embodiment 2, the fixing structure further includes multiple second connectors 70. One end of each third connecting cable 61 in the connection group 60 closest to the floating foundation 10 among the n connection groups 60 is slidably connected to the middle of a first connecting cable 20 via a second connector 70. The second connector 70 facilitates the connection between each third connecting cable 61 in the connection group 60 closest to the floating foundation 10 and a first connecting cable 20, and also makes the relative sliding between the second connector 70 and the middle of the first connecting cable 20 easier, thereby allowing the third connecting cable 61 and the middle of the first connecting cable 20 to slide relative to each other in a certain direction.

[0043] like Figure 2 As shown, in Embodiment 2, when n is 1, for one of the third connecting cables 61, the first end of the third connecting cable 61 is fixedly connected to the first end of a second connecting member 70, the second end of the second connecting member 70 connected to the first end of the third connecting cable 61 is slidably connected to a first connecting cable 20, the second end of the third connecting cable 61 is fixedly connected to the first end of another second connecting member 70, the second end of the second connecting member 70 connected to the second end of the third connecting cable 61 is slidably connected to another first connecting cable 20, and the middle part of the third connecting cable 61 is slidably connected to the second end of a first connecting member 50. This arrangement allows the third connecting cable 61 to be connected to the first connecting cable 20 via the second connecting member 70, and also to the second connecting cable 30 via the first connecting member 50. The slidable connection between the middle part of the third connecting cable 61 and the second end of the first connecting member 50 allows the middle part of the third connecting cable 61 to slide relative to the second connecting cable 30.

[0044] Preferably, in Embodiment 2, when n is 1, both ends of each third connecting cable 61 are connected to the two adjacent first connecting cables 20. Each end of each third connecting cable 61 is connected to two second connecting members 70. Each first connecting cable 20 has two third connecting cables 61 connected to it, meaning that the middle of each first connecting cable 20 has two second connecting members 70 connected to it. The middle of each third connecting cable 61 is connected to a second connecting cable 30, meaning that the middle of each third connecting cable 61 has a first connecting member 50 connected to it.

[0045] Specifically, the first end and the second end of the second connector 70 are positioned opposite each other.

[0046] It should be noted that the middle part of the third connecting cable 61 refers to the position between the first end and the second end of the third connecting cable 61, and is not limited to the symmetrical position of the first end and the second end of the third connecting cable 61. The sliding connection between the second end of the second connector 70, which is connected to the second end of the third connecting cable 61, and the other first connecting cable 20 means that the middle part of the first connecting cable 20 and the second end of the second connector 70 slide relative to each other without disengaging. Similarly, the sliding connection between the middle part of the third connecting cable 61 and the second end of the first connector 50 means that the middle part of the third connecting cable 61 slides relative to the second end of the first connector 50 without disengaging.

[0047] like Figure 3 As shown in Embodiment 2, when n is greater than 1, for any two adjacent connection groups 60, the two ends of each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 are slidably connected to the middle of the two adjacent third connecting cables 61 in the connection group 60 closest to the floating foundation 10. The three interconnected third connecting cables 61 are arranged adjacent to each other. This arrangement allows relative sliding between any two adjacent connection groups 60, preventing the adjacent connection groups 60 from breaking under heavy stress when the floating foundation 10 floats due to seawater flow, thus ensuring the usability of the fixed structure. The adjacent arrangement of the three interconnected third connecting cables 61 facilitates the connection of any two adjacent connection groups 60.

[0048] Specifically, for any two adjacent connection groups 60, the connection group 60 farther from the floating foundation 10 and the connection group 60 closer to the floating foundation 10 are determined by the relationship between the distances of the two connection groups 60 to the center of the floating foundation 10. The distance between the connection group 60 farther from the floating foundation 10 and the center of the floating foundation 10 is greater than the distance between the connection group 60 closer to the floating foundation 10 and the center of the floating foundation 10.

[0049] It should be noted that the two ends of each third connecting cable 61 in a connecting group 60 away from the floating foundation 10 are respectively slidably connected to the middle of two adjacent third connecting cables 61 in a connecting group 60 close to the floating foundation 10. This means that the two ends of each third connecting cable 61 in a connecting group 60 away from the floating foundation 10 and the middle of two adjacent third connecting cables 61 in a connecting group 60 close to the floating foundation 10 can slide relative to each other without disengaging.

[0050] like Figure 3 As shown, in Embodiment 2, the fixing structure further includes multiple third connectors 80. For any two adjacent connection groups 60, one end of each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 is slidably connected to the middle of a third connecting cable 61 in the connection group 60 closest to the floating foundation 10 via a third connector 80. The third connectors 80 enable any two adjacent connection groups 60 to connect to each other and also facilitate sliding between any two adjacent connection groups 60.

[0051] It should be noted that "multiple third connectors 80" refers to the number of third connectors 80 being two or more.

[0052] like Figure 3 As shown, in Embodiment 2, for any two adjacent connection groups 60, the first end of each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 is fixedly connected to the first end of a third connecting member 80, and the second end of each third connecting cable 61 is fixedly connected to the first end of another third connecting member 80. The second end of a third connecting member 80 connected to one end of a third connecting cable 61 is slidably connected to the middle of a third connecting cable 61 in the connection group 60 closest to the floating foundation 10. This arrangement makes it easier to connect two adjacent connection groups 60 via the third connecting member 80, and also allows two adjacent connection groups 60 to slide relative to each other via the third connecting member 80.

[0053] It should be noted that the first and second ends of the third connector 80 are positioned opposite each other.

[0054] Preferably, in embodiment two, when n is greater than 1, such as Figure 3As shown, each third connecting cable 61 in the connecting group 60 closest to the floating foundation 10 has its two ends connected to the two first connecting cables 20 adjacent to it. Each end of each third connecting cable 61 is connected to two second connecting pieces 70. Each first connecting cable 20 is connected to two third connecting cables 61, that is, the middle of each first connecting cable 20 is connected to two second connecting pieces 70. The middle of each third connecting cable 61 is simultaneously connected to one end of two third connecting cables 61 in the connecting group 60 closest to the floating foundation 10. That is, each third connecting cable 61 in the connecting group 60 closest to the floating foundation 10 is connected to two third connecting pieces 80 and two second connecting pieces 70.

[0055] When n is greater than 1, such as Figure 3 As shown, the two ends of each third connecting cable 61 in the connecting group 60 furthest from the floating foundation 10 are connected to two adjacent third connecting cables 61 in the connecting group adjacent to the connecting group furthest from the floating foundation. Each end of each third connecting cable 61 is connected to two third connecting pieces 80, and the middle of each third connecting cable 61 is connected to a first connecting piece 50. That is, each third connecting cable 61 in the connecting group 60 furthest from the floating foundation 10 is connected to two third connecting pieces 80 and one first connecting piece 50.

[0056] When n is greater than 1, such as Figure 3 As shown, in any two adjacent connection groups 60, the one furthest from the floating foundation 10 is the first connection group 60, and the one closest to the floating foundation 10 is the second connection group 60. The two ends of each third connection cable 61 in the first connection group 60 are respectively connected to the two third connection cables 61 adjacent to that third connection cable 61 in the second connection group 60. That is, each third connection cable 61 in the first connection group 60 has two third connectors 80 at both ends, and each third connection cable 61 in the second connection group 60 has two third connectors 80 in the middle. In other words, excluding the connection group 60 closest to the floating foundation 10 and the connection group 60 furthest from the floating foundation 10, each third connection cable 61 in each connection group 60 has two third connectors 80 in the middle and one third connector 80 at each end.

[0057] like Figure 2 and Figure 3As shown, in Embodiment 1, the ratio of the cross-sectional area of ​​each first connecting cable 20 to the cross-sectional area of ​​each third connecting cable 61 in the connecting group 60 closest to the floating foundation 10 among the n connecting groups 60 is 0.4 to 0.9. Similarly, the ratio of the cross-sectional area of ​​each third connecting cable 61 in the connecting group 60 closest to the floating foundation 10 to the cross-sectional area of ​​each third connecting cable 61 in the connecting group 60 furthest from the floating foundation 10 among any two adjacent connecting groups 60 is 0.4 to 0.9. Furthermore, the ratio of the cross-sectional area of ​​each third connecting cable 61 in the connecting group 60 furthest from the floating foundation 10 among the n connecting groups 60 to the cross-sectional area of ​​each second connecting cable 30 is 0.4 to 0.9. This makes the manufacturing of the first connecting cable 20, second connecting cable 30, and third connecting cable 61 easier, thereby reducing the cost of the first connecting cable 20, second connecting cable 30, and third connecting cable 61, and thus lowering the cost of the fixed structure. It also enables the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61 using different cross-sectional areas to reduce weight compared to the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61 using the same cross-sectional area.

[0058] It should be noted that the cross-sectional area of ​​the third connecting cable 61 refers to the cross-sectional area perpendicular to the axis of the third connecting cable 61. Using the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61 with different cross-sectional areas can reduce the weight by more than 10% compared to using the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61 with the same cross-sectional area.

[0059] Preferably, in this embodiment, the ratio of the cross-sectional area of ​​each first connecting cable 20 to the cross-sectional area of ​​each third connecting cable 61 in the connection group 60 closest to the floating foundation 10 among the n connection groups 60 is 0.6 to 0.7; the ratio of the cross-sectional area of ​​each third connecting cable 61 in the connection group 60 closest to the floating foundation 10 to the cross-sectional area of ​​each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 among any two adjacent connection groups 60 is 0.6 to 0.7; and the ratio of the cross-sectional area of ​​each third connecting cable 61 in the connection group 60 furthest from the floating foundation 10 among the n connection groups 60 to the cross-sectional area of ​​each second connecting cable 30 is 0.6 to 0.7. For example, when one connection group 60 is provided, the cross-sectional area of ​​the first connecting cable 20 is 300 mm². 2 Therefore, the cross-sectional area of ​​the third connecting cable 61 is 500 mm². 2 The cross-sectional area of ​​the second connecting cable 30 is 833.3 (or 850) mm². 2 .

[0060] like Figure 4As shown, in Embodiment 1, the first connector 50 includes a connecting block 51, a fixing part 52 disposed at the first end of the connecting block 51, an installation space 53 disposed within the connecting block 51, and a connecting shaft 54 ​​disposed within the installation space 53. The fixing part 52 forms the first end of the first connector 50, and the connecting shaft 54 ​​forms the second end of the first connector 50. The fixing part 52 makes the connection between the second connecting cable 30 and the connecting block 51 more stable. The installation space 53 allows the third connecting cable 61 or the first connecting cable 20 to bypass the connecting shaft 54 ​​before connection. The connecting shaft 54 ​​allows the connecting block 51 to slide on the third connecting cable 61 or the first connecting cable 20, thereby allowing the second connecting cable 30 to slide relative to the third connecting cable 61 and the first connecting cable 20.

[0061] Preferably, in this embodiment, the first connector 50, the second connector 70, and the third connector 80 have the same structure, which facilitates manufacturing. The fixing part 52 in the second connector 70 forms the first end of the second connector 70, and the connecting shaft 54 ​​forms the second end of the second connector 70. The fixing part 52 in the third connector 80 forms the first end of the third connector 80, and the connecting shaft 54 ​​forms the second end of the third connector 80. The fixing part 52 is a fixing ring, which facilitates the connection between the second connecting cable 30 and the fixing part 52. Of course, in embodiments not shown in the figures, the fixing part 52 can also be a fixing rod and a receiving space. The fixing rod is disposed within the receiving space and connected to the connecting block 51, and the second connecting cable 30 passes through the fixing rod and connects to the connecting block 51.

[0062] Specifically, the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61 are all mooring cables, and the mooring cables are anchor chains. By setting multiple first connecting cables 20, n connecting groups 60, and multiple second connecting cables 30, the mooring tension of the entire fixed structure can be coordinated to ensure the stability of the floating foundation 10.

[0063] like Figure 5 As shown, the floating wind power device of Embodiment 1 includes: a wind turbine 100, a fixed structure, and a dynamic submarine cable 110 connected to the wind turbine 100. The fixed structure is the aforementioned fixed structure, and the wind turbine 100 is mounted on the fixed structure. Under the action of the first connecting cable 20, the second connecting cable 30, and the first connecting member 50, the connection between the floating foundation 10 of the aforementioned fixed structure and the anchoring foundation 40 is more stable, preventing the floating foundation 10 from drifting away if one of the first connecting cables 20 or the second connecting cable 30 breaks, thus improving the stability of the fixed structure. The floating wind power device with the aforementioned fixed structure also has the aforementioned advantages. The dynamic submarine cable 110 enables the transmission of electrical energy generated by the wind turbine 100. The fixed structure also provides support for the wind turbine 100.

[0064] Preferably, a tower is installed between the wind turbine and the floating foundation, and the tower extends from the sea level to the sky, so that the wind turbine can be located in the air, which facilitates the utilization of wind energy.

[0065] like Figures 1 to 5 As shown, the wind farm in Embodiment 1 includes: multiple floating wind turbines and multiple static submarine cables spaced apart. The static submarine cables are connected one-to-one with the dynamic submarine cables 110 of the multiple floating wind turbines. The floating wind turbines are the aforementioned floating wind turbines. Under the action of the first connecting cable 20, the second connecting cable 30, and the first connecting member 50, the connection between the floating foundation 10 of the aforementioned floating wind turbine and the anchoring foundation 40 is more stable, preventing the floating foundation 10 from drifting away if one of the first connecting cable 20 or the second connecting cable 30 breaks, thus improving the stability of the floating wind turbine. The wind farm with the aforementioned floating wind turbine also has the above advantages. The static submarine cables enable the electrical energy transmitted by the dynamic submarine cables 110 to be transmitted to the power plant. The spaced arrangement of multiple floating wind turbines allows the wind farm to improve its wind energy utilization efficiency.

[0066] Specifically, by rationally setting the cross-sectional areas of the first connecting cable 20, the second connecting cable 30, and the third connecting cable 61, the length can be reduced. This allows the wind farm to avoid interference between the fixed structures of different floating wind turbines during its setup, enabling more efficient use of the sea area and improving the energy conversion efficiency (i.e., increasing power generation) within the sea area.

[0067] like Figures 1 to 5 As shown, the installation method of the floating wind turbine in Embodiment 1 is used to install the floating wind turbine, which is the aforementioned floating wind turbine. The installation method includes:

[0068] The first ends of the multiple second connecting cables 30 are fixed to the anchoring foundation 40;

[0069] Both ends of each of the plurality of first connecting cables 20 are connected to the floating foundation 10;

[0070] The second ends of the plurality of second connecting cables 30 are slidably connected to the middle of the plurality of first connecting cables 20.

[0071] With the above settings, multiple second connecting cables 30 can be connected to multiple first connecting cables 20, multiple first connecting cables 20 can be connected to the floating foundation 10, and multiple second connecting cables 30 can be connected to the anchor foundation 40.

[0072] The step of slidingly connecting the second ends of the plurality of second connecting cables 30 to the middle portions of the plurality of first connecting cables 20 includes:

[0073] Connect the connection group 60 closest to the floating foundation 10 among the n connection groups 60 to the first connecting cable 20;

[0074] Connect the third connecting cable 61 in each of the n connecting groups 60 to each other;

[0075] Connect the connection group 60 furthest from the floating foundation 10 among the n connection groups 60 to the second connection cable 30.

[0076] With the above settings, n connection groups 60 can be connected to the first connection cable 20 and the second connection cable 30, thereby connecting the fixed structure.

[0077] The steps following the sliding connection of the second ends of the plurality of second connecting cables 30 to the middle of the plurality of first connecting cables 20 include:

[0078] Connect the dynamic submarine cable 110 to the wind turbine 100.

[0079] With the above settings, the electrical energy generated by the wind turbine 100 can be transmitted.

[0080] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fixing structure for a wind turbine generator, characterized in that, include: Floating foundation (10) is used to support wind turbine (100); Multiple first connecting cables (20), each first connecting cable (20) having a first end and a second end connected to different positions of the floating foundation (10); Multiple second connecting cables (30), each second connecting cable (30) having its first end connected to the anchoring foundation (40), the number of second connecting cables (30) being the same as the number of first connecting cables (20); Multiple first connectors (50) are provided, and multiple first connectors (50) are provided in a one-to-one correspondence with multiple second connecting cables (30). The first end of the first connector (50) is fixedly connected to the second connecting cable (30). The fixing structure further includes n connection groups (60), which are connected between the middle of the plurality of first connection cables (20) and the plurality of first connectors (50), wherein n is a positive integer greater than or equal to 1; Each of the connection groups (60) includes a plurality of third connection cables (61), the number of which is the same as the number of the first connection cables (20); The middle portion of each third connecting cable (61) in the connection group (60) furthest from the floating foundation (10) among the n connection groups (60) is slidably connected to the second end of the first connecting member (50), and the two ends of each third connecting cable (61) in the connection group (60) closest to the floating foundation (10) among the n connection groups (60) are slidably connected to the middle portions of two adjacent first connecting cables (20).

2. The fixing structure according to claim 1, characterized in that, The floating foundation (10) includes multiple sidewalls (11), and multiple first connecting cables (20) are connected to different sidewalls (11) of the floating foundation (10). The first end and the second end of each first connecting cable (20) are respectively connected to different positions of the same sidewall (11) of the floating foundation (10).

3. The fixing structure according to claim 2, characterized in that, The fixing structure also includes a plurality of second connectors (70), and one end of each of the third connecting cables (61) in the n connecting groups (60) closest to the floating foundation (10) is slidably connected to the middle of a first connecting cable (20) via a second connector (70).

4. The fixing structure according to claim 3, characterized in that, When n is 1, for one of the third connecting cables (61), the first end of the third connecting cable (61) is fixedly connected to the first end of a second connecting member (70), the second end of the second connecting member (70) connected to the first end of the third connecting cable (61) is slidably connected to a first connecting cable (20), the second end of the third connecting cable (61) is fixedly connected to the first end of another second connecting member (70), the second end of the second connecting member (70) connected to the second end of the third connecting cable (61) is slidably connected to another first connecting cable (20), and the middle part of the third connecting cable (61) is slidably connected to the second end of the first connecting member (50).

5. The fixing structure according to claim 3, characterized in that, When n is greater than 1, for any two adjacent connection groups (60), the two ends of each third connection cable (61) in a connection group (60) away from the floating foundation (10) are slidably connected to the middle of the two adjacent third connection cables (61) in a connection group (60) close to the floating foundation (10), and the three interconnected third connection cables (61) are arranged adjacent to each other.

6. The fixing structure according to claim 5, characterized in that, The fixing structure also includes a plurality of third connectors (80), and for any two adjacent connection groups (60), one end of each of the third connecting cables (61) in a connection group (60) away from the floating foundation (10) is slidably connected via a third connector (80) to the middle of a third connecting cable (61) in a connection group (60) near the floating foundation (10).

7. The fixing structure according to claim 6, characterized in that, For any two adjacent connection groups (60), the first end of each third connecting cable (61) in a connection group (60) away from the floating foundation (10) is fixedly connected to the first end of a third connector (80), the second end of each third connecting cable (61) is fixedly connected to the first end of another third connector (80), and the second end of a third connector (80) connected to one end of the third connecting cable (61) is slidably connected to the middle of a third connecting cable (61) in a connection group (60) close to the floating foundation (10).

8. The fixing structure according to any one of claims 3 to 7, characterized in that, The ratio of the cross-sectional area of ​​each first connecting cable (20) to the cross-sectional area of ​​each third connecting cable (61) in the most adjacent of the n connecting groups (60) closest to the floating foundation (10) is 0.4 to 0.

9. The ratio of the cross-sectional area of ​​each third connecting cable (61) in the most adjacent of the n connecting groups (60) closest to the floating foundation (10) to the cross-sectional area of ​​each third connecting cable (61) in the most adjacent of the n connecting groups (60) farthest from the floating foundation (10) is 0.4 to 0.

9. The ratio of the cross-sectional area of ​​each third connecting cable (61) in the most adjacent of the n connecting groups (60) farthest from the floating foundation (10) to the cross-sectional area of ​​each second connecting cable (30) is 0.4 to 0.

9.

9. The fixing structure according to any one of claims 1 to 7, characterized in that, The first connector (50) includes a connecting block (51), a fixing part (52) disposed at the first end of the connecting block (51), an installation space (53) disposed in the connecting block (51), and a connecting shaft (54) disposed in the installation space (53). The fixing part (52) forms the first end of the first connector (50), and the connecting shaft (54) forms the second end of the first connector (50).

10. A floating wind power unit, comprising: A wind turbine generator (100), a fixed structure, and a dynamic submarine cable (110) connected to the wind turbine generator (100), characterized in that the fixed structure is the fixed structure according to any one of claims 1 to 9, and the wind turbine generator (100) is disposed on the fixed structure.

11. A wind farm, characterized in that, include: Multiple floating wind turbines and multiple static submarine cables are arranged at intervals. The multiple static submarine cables are connected one-to-one with the dynamic submarine cables (110) of the multiple floating wind turbines. The floating wind turbines are the floating wind turbines as described in claim 10.

12. A method for installing a floating wind turbine, characterized in that, The floating wind turbine is the floating wind turbine as described in claim 10, and the installation method includes: The first ends of the plurality of second connecting cables (30) are fixed to the anchoring base (40); Connect both ends of each of the plurality of first connecting cables (20) to the floating foundation (10); The second ends of the plurality of second connecting cables (30) are slidably connected to the middle of the plurality of first connecting cables (20); The step of slidingly connecting the second ends of the plurality of second connecting cables (30) to the middle of the plurality of first connecting cables (20) includes: Connect the connection group (60) closest to the floating foundation (10) among the n connection groups (60) to the first connection cable (20); Connect the third connecting cable (61) in each of the n connecting groups (60) to each other; Connect the connection group (60) that is furthest from the floating foundation (10) among the n connection groups (60) to the second connection cable (30).

Images