Floating fan

Abstract

The utility model provides a floating type fan, and relates to the technical field of wind power generation. The floating type draught fan comprises a draught fan foundation and a draught fan tower, the draught fan foundation comprises a floating body, a connecting transverse support and a fixed transverse support, the floating body comprises two tower side floating bodies and at least one far-end floating body, the connecting transverse support comprises a tower side transverse support and a far-end transverse support, the two tower side floating bodies are connected through the tower side transverse support, and the far-end transverse support is connected with the two tower side floating bodies. The far-end floating body and the tower side floating body are connected through a far-end cross arm, the fan tower is arranged on the tower side cross arm, and the far-end floating body is connected to the fan tower and / or the tower side cross arm through a fixed cross arm. Through the arrangement, the fan tower can be located at the edge position of one side of the fan foundation, a lifting arm of a crane can be more conveniently used for lifting, the problem that mooring stress of the fan tower is concentrated can be avoided, meanwhile, the stability of the fan tower relative to the fan foundation is further guaranteed through the fixing transverse support, and the overall movement performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a floating wind turbine. Background Art

[0002] The current mainstream design of floating wind turbines includes a wind turbine foundation and a wind turbine tower, and the wind turbine foundation is mostly in the form of three columns or four columns. In the three-column form, the wind turbine tower is set on one of the corner pontoons, and in the four-column form, the wind turbine tower is set on the middle pontoon. From the perspective of motion performance, the four-column wind turbine foundation has better overall motion performance of the floating wind turbine due to its symmetry, but the disadvantage is that when the wind turbine foundation is berthed at the dock for wind turbine tower assembly, the crane boom needs to be extended farther to install the wind turbine tower in the middle position, which places high requirements on the dock lifting equipment. In addition, as the overall size of the floating wind turbine becomes larger and larger, the corresponding span of the corresponding wind turbine foundation also becomes larger and larger. The dock lifting equipment may not meet the requirements of long-span lifting, making it impossible to assemble the wind turbine. For the three-column wind turbine foundation, the wind turbine tower is set on one of the corner pontoons, which is conducive to the assembly of the wind turbine tower when the wind turbine foundation is moored at the dock. However, since the waterline area of ​​the pontoon where the wind turbine tower is located is small, the mooring force is relatively concentrated, resulting in the floating wind turbine being unstable in terms of roll, pitch and bow roll, and the overall movement performance is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a floating wind turbine in order to overcome the defects of the floating wind turbine in the prior art that the floating wind turbine cannot simultaneously solve the difficulty of long-span hoisting and installation and the poor overall operating performance.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A floating wind turbine comprises a wind turbine foundation and a wind turbine tower, wherein the wind turbine foundation comprises:

[0006] A floating body, the floating body comprising two tower side floating bodies and at least one distal floating body;

[0007] A connecting cross brace, wherein the connecting cross brace comprises a tower side cross brace and a distal cross brace, the two tower side floating bodies are connected by the tower side cross brace, the distal floating body and the tower side floating body are connected by the distal cross brace, and the wind turbine tower is arranged on the tower side cross brace;

[0008] Fixed cross braces, the distal floating body is connected to the wind turbine tower and / or the tower side cross braces through the fixed cross braces.

[0009] In the present solution, through this arrangement, the two tower side buoys are connected by the tower side cross brace, and the remote buoy and the tower side buoy are connected by the remote cross brace, so that the tower side buoy and the remote buoy together form a stable wind turbine foundation, and then the wind turbine tower is arranged on the tower side cross brace, so that the wind turbine tower can be located at one side edge position of the wind turbine foundation, when the wind turbine foundation is berthed at the wharf for wind turbine tower assembly, it is more convenient to use the crane arm for lifting, avoiding the problem that the wind turbine tower cannot be assembled; at the same time, the wind turbine tower is arranged on the tower side cross brace to avoid the mooring force concentration problem caused by the wind turbine tower being arranged on one of the buoys, and at the same time, the remote buoy is connected to the wind turbine tower and / or the tower side cross brace by a fixed cross brace, so as to further ensure the stability of the wind turbine tower relative to the wind turbine foundation, so as to avoid the instability of the floating wind turbine in terms of roll, pitch and bow, and improve the overall motion performance.

[0010] Furthermore, one end of the fixed cross brace is connected to the remote floating body, and the other end of the fixed cross brace is connected to the connection position between the tower side cross brace and the wind turbine tower.

[0011] In this solution, one end of the fixed cross brace is connected to the tower side cross brace, so as to form an integral structure with the tower side cross brace to jointly support the wind turbine tower; at the same time, the fixed cross brace is specifically connected to the connecting position of the tower side cross brace and the wind turbine tower to structurally strengthen the position of the fixed wind turbine tower, so as to further ensure the stability of the wind turbine foundation supporting the wind turbine tower and improve the overall movement performance.

[0012] Furthermore, the connection position between the tower side cross brace and the wind turbine tower is the middle position of the tower side cross brace between the two tower side floats.

[0013] In this solution, a fixed cross brace is connected to the tower side cross brace in the middle position between the two tower side floats, that is, the wind turbine tower is set in the middle position between the two tower side floats, which can avoid the wind turbine tower being too close to a certain floating body to a large extent, thereby avoiding the problem of mooring force concentration of the wind turbine tower, and at the same time improving the overall stability of the floating wind turbine.

[0014] Furthermore, the tower side cross brace includes:

[0015] A tower lower cross brace, the tower lower cross brace is connected to the bottom of the two tower side floats;

[0016] A support column, wherein the support column is vertically arranged on the lower cross brace of the tower, and the wind turbine tower is arranged on the top of the support column;

[0017] The tower upper cross brace includes two upper side cross braces, one end of the two upper side cross braces is respectively connected to the top of the two tower side floats, and the other end of the two upper side cross braces is connected to the wind turbine tower.

[0018] In this solution, by connecting the tower lower cross brace between the bottoms of the two tower side floats, and arranging a support column for supporting the wind turbine tower on the tower lower cross brace, it is more convenient to set the wind turbine tower at a side edge position on the wind turbine foundation, and at the same time, two upper side cross braces are used to respectively connect the tower side floats and the wind turbine tower to ensure the stability of the wind turbine tower relative to the wind turbine foundation, thereby improving the stability of the entire floating wind turbine on the sea surface. Further, the tower side cross brace includes a tower upper cross brace and a tower lower cross brace, and the tower upper cross brace and the tower lower cross brace are respectively connected to the top and bottom of the two tower side floats, and the wind turbine tower is arranged on the tower upper cross brace.

[0019] In this solution, the tower side cross braces are set as tower upper cross braces and tower lower cross braces to achieve connection and support for the top and bottom of the two tower side floats, and then the wind turbine tower is set on the tower upper cross brace to simplify the structure and save costs while meeting the connection strength and support stability.

[0020] Furthermore, the tower side cross brace also includes a supporting column, which is vertically arranged between the tower upper cross brace and the tower lower cross brace, and the supporting column is located below the wind turbine tower in the vertical direction.

[0021] In this solution, a supporting column is further arranged between the upper horizontal brace of the tower and the lower horizontal brace of the tower, and the supporting column is located below the wind turbine tower in the vertical direction to further support the wind turbine tower in the vertical direction, thereby ensuring the stability of the overall structure of the wind turbine foundation, and further ensuring the stability of the support for the wind turbine tower.

[0022] Furthermore, the number of the remote floating body is one, and the fixed cross brace connected to the remote floating body and the cross brace on the tower are arranged perpendicular to each other on the same horizontal plane.

[0023] In the present scheme, a remote floating body is provided, which can form a triangular structure with two tower side floating bodies, thereby improving the structural stability of the wind turbine foundation of the triangular structure compared with other structural forms. At the same time, the fixed cross brace connected to the remote floating body and the cross brace on the tower are arranged perpendicular to each other on the same horizontal plane. Compared with the inclined setting or the setting not on the same horizontal plane, this structure can further improve the structural stability of the wind turbine foundation, so as to avoid the instability of the floating wind turbine in roll, pitch and bow roll to a large extent, and improve the overall movement performance.

[0024] Furthermore, the distal cross brace is connected to the bottom of the distal floating body and the tower side floating body.

[0025] In this solution, when the fixed cross brace and the cross brace on the tower are arranged perpendicular to each other on the same horizontal plane, the top of the tower side float and the remote float can be connected and fixed by the fixed cross brace and the cross brace on the tower. At this time, the remote cross brace is directly connected to the bottom of the tower side float and the remote float to achieve connection and fixation of the bottom, so as to simplify the structure and save costs as much as possible while ensuring the overall stability of the wind turbine foundation.

[0026] Furthermore, the wind turbine foundation includes a first module and a second module, the first module includes two tower side floats, the tower side cross braces and the remote cross braces, and the second module includes the remote floats and the fixed cross braces;

[0027] In the vertical direction of the floating wind turbine, the bottom of the lower cross brace of the tower is higher than the top of the distal cross brace.

[0028] In this solution, the wind turbine foundation is configured as two modules, wherein the first module includes two tower side floats, a tower cross brace and a distal cross brace. By utilizing the height difference between the tower lower cross brace and the distal cross brace, during the transportation of the wind turbine foundation, the distal cross brace of any wind turbine foundation can be inserted into the tower lower cross brace of another wind turbine foundation, so as to realize the plug-in and stacking of multiple wind turbine foundations along a fixed direction. Through this configuration, the simultaneous transportation of multiple wind turbine foundations can be met, thereby improving the transportation efficiency of the wind turbine foundation and reducing the transportation cost of the wind turbine foundation.

[0029] Furthermore, the first module and the second module are detachably connected.

[0030] In this solution, this arrangement is used to improve the convenience of disassembly and assembly between the first module and the second module, thereby improving efficiency both in transportation and in assembly.

[0031] Furthermore, when the number of the distal floating bodies is two or more, adjacent distal floating bodies are connected by the distal cross brace;

[0032] And / or, the floating wind turbine further comprises a mooring anchor chain, the fixed ends of the mooring anchor chain are respectively arranged on the tower side buoy and the distal buoy, and the free ends of the mooring anchor chain are used for connecting and fixing to the seabed.

[0033] In this scheme, if the number of remote buoys is two or more, remote cross braces are also arranged between adjacent remote buoys so that multiple floating bodies can be arranged to form an integral structure, thereby further improving the overall structural stability of the wind turbine foundation; at the same time, the fixed ends of the mooring anchor chains are arranged on the tower side buoys and the remote buoys, and the free ends of the mooring anchor chains are connected and fixed to the seabed to achieve the installation and fixation of the entire floating wind turbine at sea.

[0034] The positive and progressive effects of the utility model are:

[0035] By setting the wind turbine tower on the side cross brace of the tower, the wind turbine tower can be located at one side edge position of the wind turbine foundation. When the wind turbine foundation is berthed at the wharf for assembling the wind turbine tower, it is more convenient to use the crane arm for lifting, avoiding the problem that the wind turbine tower cannot be assembled; at the same time, the wind turbine tower is set on the side cross brace of the tower to avoid the problem of mooring force concentration caused by setting the wind turbine tower on one of the floating bodies. At the same time, the remote floating body is connected to the wind turbine tower and / or the side cross brace of the tower by using a fixed cross brace, so as to further ensure the stability of the wind turbine tower relative to the wind turbine foundation, so as to avoid the instability of the floating wind turbine in terms of roll, pitch and bow, and improve the overall movement performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of a floating wind turbine in one embodiment of the utility model.

[0037] Figure 2 It is a structural schematic diagram of a floating wind turbine at a wind turbine foundation in one embodiment of the utility model.

[0038] Figure 3 It is a schematic structural diagram of a floating wind turbine in a disassembled state according to an embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the positions of multiple wind turbine foundations in a transportation state in one embodiment of the utility model.

[0040] Figure 5 It is a schematic structural diagram of the connection between the tower side cross brace and the fixed cross brace in one embodiment of the utility model.

[0041] Figure 6 It is a schematic diagram of the structure of the connection between the distal cross brace and the distal floating body in one embodiment of the utility model.

[0042] Description of reference numerals:

[0043] Floating wind turbine 1

[0044] Fan Basics 10

[0045] Tower side float 110

[0046] Remote float 120

[0047] Tower upper cross brace 130

[0048] Tower lower cross brace 140

[0049] Support column 150

[0050] Distal cross brace 160

[0051] Fixed cross brace 170

[0052] Fixed tower 210

[0053] Fan head 220

[0054] Mooring anchor chain 30

[0055] First Module 40

[0056] Second Module 50

[0057] Flange 60

[0058] Bolt hole 70 DETAILED DESCRIPTION

[0059] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] This embodiment provides a floating wind turbine 1, such as Figure 1 As shown, the floating wind turbine 1 mainly includes a wind turbine foundation 10 and a wind turbine tower, the wind turbine tower further includes a fixed tower 210 and a wind turbine head 220, the wind turbine head 220 includes a wind turbine nacelle and wind rotor blades, the bottom end of the fixed tower 210 is fixed on the wind turbine foundation 10, the top of the fixed tower 210 is fixed with the wind turbine nacelle, the wind rotor blades are arranged on the top of the fixed tower 210 through the wind turbine nacelle, and the wind rotor blades can rotate under the action of wind force, thereby realizing the conversion of kinetic energy into electrical energy. Among them, the specific structure and working principle of the wind turbine tower can adopt the relevant solutions existing in the prior art, which will not be repeated here.

[0063] like Figure 2 As shown, the wind turbine foundation 10 of the floating wind turbine 1 mainly includes a floating body, a connecting cross brace and a fixed cross brace 170, the floating body includes two tower side floating bodies 110 and a remote floating body 120, the connecting cross brace includes a tower side cross brace and a remote cross brace 160, wherein the tower side cross brace is composed of a tower upper cross brace 130, a tower lower cross brace 140 and a supporting column 150, the two tower side floating bodies 110 are connected by the tower side cross brace, and the remote floating body 120 is connected to the two tower side floating bodies 110 by the remote cross brace 160, and the bottom end of the fixed tower 210 in the wind turbine tower is fixedly arranged on the tower side cross brace; in addition, the remote floating body 120 is also connected to the tower side cross brace through the fixed cross brace 170.

[0064] Through the above arrangement, the two tower side floats 110 are connected by the tower side cross brace, and the remote float 120 and the tower side float 110 are connected by the remote cross brace 160, so that the tower side float 110 and the remote float 120 together form a stable wind turbine foundation 10, and then the fixed tower 210 in the wind turbine tower is arranged on the tower side cross brace, so that the wind turbine tower can be located at one side edge position on the wind turbine foundation 10. When the wind turbine foundation 10 is berthed at the wharf for wind turbine tower assembly, it is more convenient to use the crane arm for hoisting, avoiding the problem that the wind turbine tower cannot be assembled;

[0065] At the same time, the fixed tower 210 in the wind turbine tower is set on the side cross brace of the tower to avoid the problem of mooring force concentration caused by the wind turbine tower being set on one of the floating bodies, and the remote floating body 120 is connected to the side cross brace of the tower by using the fixed cross brace 170 to further ensure the stability of the wind turbine tower relative to the wind turbine foundation 10, so as to avoid the instability of the floating wind turbine 1 in terms of roll, pitch and bow, and improve the overall movement performance.

[0066] It should be noted that, in the present embodiment, the number of the remote floats 120 is set to one, and in other alternative embodiments, the remote floats 120 may also be set to other numbers. When there are multiple remote floats 120, each remote float 120 may be connected to the two tower side floats 110 through a remote cross brace 160 and connected to the tower side cross brace through a fixed cross brace 170.

[0067] In this embodiment, the fixed cross brace 170 connects the remote floating body 120 to the tower side cross brace, so that the fixed cross brace 170 and the tower side cross brace form an integral structure, and jointly support the wind turbine tower to further ensure the stability of the wind turbine tower relative to the wind turbine foundation 10. In other alternative embodiments, the fixed cross brace 170 can also directly connect the remote floating body 120 to the fixed tower 210 of the wind turbine tower, or connect the remote floating body 120 to the tower side cross brace and the fixed tower 210 of the wind turbine tower at the same time, which can also improve the stability of the wind turbine tower relative to the wind turbine foundation 10.

[0068] like Figure 2 As shown, since the fixed cross brace 170 connects the remote floating body 120 to the tower side cross brace, one end of the fixed cross brace 170 is connected to the remote floating body 120, and the other end is connected to the connection position of the tower side cross brace and the fixed tower 210 in the wind turbine tower, so as to structurally strengthen the connection position of the fixed tower 210, so as to further ensure the stability of the wind turbine foundation 10 in supporting the wind turbine tower and improve the overall movement performance.

[0069] Specifically, the connection position of the tower side cross brace and the fixed tower 210 in the wind turbine tower is the middle position of the tower side cross brace between the two tower side floats 110, that is, the fixed tower 210 of the wind turbine tower is set in the middle position between the two tower side floats 110, which avoids the wind turbine tower from being too close to a certain floating body to a large extent, thereby avoiding the problem of concentrated mooring force of the wind turbine tower, and at the same time improving the overall stability of the floating wind turbine 1.

[0070] As mentioned above, the tower side cross brace is specifically composed of the tower upper cross brace 130, the tower lower cross brace 140 and the supporting column 150. Figure 2As shown, the tower upper cross brace 130 and the tower lower cross brace 140 are respectively connected to the top and bottom of the two tower side floats 110, and the tower upper cross brace 130 and the tower lower cross brace 140 are arranged in parallel, and the fixed tower frame 210 of the wind turbine tower is specifically arranged on the tower upper cross brace 130. Through the arrangement of the tower upper cross brace 130 and the tower lower cross brace 140, the top and bottom of the two tower side floats 110 are connected and supported, and then the fixed tower frame 210 of the wind turbine tower is arranged on the tower upper cross brace 130, so as to simplify the structure and save costs while meeting the connection strength and support stability.

[0071] On this basis, the support column 150 of the tower side cross brace is arranged between the tower upper cross brace 130 and the tower lower cross brace 140, and the support column 150 is located below the fixed tower 210 in the wind turbine tower in the vertical direction to further support the wind turbine tower in the vertical direction, thereby ensuring the stability of the overall structure of the wind turbine foundation 10, and further ensuring the stability of the support of the wind turbine tower.

[0072] In this embodiment, Figure 3 As shown, the tower upper cross brace 130 is an integral structure, that is, the tower upper cross brace 130 is a long columnar structure, and the two ends of the tower upper cross brace 130 in the length direction are respectively connected to the tops of the two tower side floats 110, and a bearing platform for fixing the wind turbine tower 210 is arranged in the middle part of the tower upper cross brace 130. The wind turbine tower 210 is fixed on the tower upper cross brace 130 by arranging the fixed tower 210 of the wind turbine tower on the bearing platform of the tower upper cross brace 130.

[0073] However, in other alternative embodiments, the tower upper cross brace 130 can also be arranged in sections. For example, the tower side cross brace is connected to the bottom of the two tower side floats 110 by the tower lower cross brace 140, and a support column 150 is vertically arranged in the middle of the tower lower cross brace 140, and the fixed tower 210 of the wind turbine tower is directly arranged on the top of the support column 150, which makes it more convenient to arrange the wind turbine tower 210 at a side edge position on the wind turbine foundation 10. At the same time, the tower upper cross brace 130 is arranged in sections, specifically divided into two sections of upper side cross braces (see attached Figure 2 The two upper side cross braces are connected at one end to the top of the two tower side floats 110, and the other ends of the two upper side cross braces are directly connected to the fixed tower 210 of the wind turbine tower. Figure 2As shown, by directly setting the fixed tower 210 of the wind turbine tower on the top of the supporting column 150, and then using two upper side cross braces to respectively connect the tower side buoy 110 and the fixed tower 210 of the wind turbine tower, the stability of the wind turbine tower relative to the wind turbine foundation 10 can also be ensured, thereby improving the stability of the entire floating wind turbine 1 on the sea surface. Figure 2 As shown, since the number of the remote floating body 120 in this embodiment is one, the line connecting the projections of the remote floating body 120 and the two tower side floating bodies 110 in the vertical direction forms an isosceles triangle, which improves the wind turbine foundation 10 of the triangular structure to be more stable in terms of structure compared with other structural forms, and the fixed cross brace 170 connected to the remote floating body 120 and the tower upper cross brace 130 are arranged perpendicular to each other on the same horizontal plane. Compared with the inclined setting or the setting not on the same horizontal plane, this structure can further improve the structural stability of the wind turbine foundation 10, so as to avoid the instability of the floating wind turbine 1 in terms of roll, pitch and bow to a large extent, and improve the overall motion performance. However, in other alternative embodiments, the fixed cross brace 170 and the tower upper cross brace 130 can be completely inclined or not arranged on the same horizontal plane, without any fixed restrictions.

[0074] Furthermore, when the fixed cross brace 170 and the tower cross brace 130 are arranged perpendicular to each other on the same horizontal plane, the top of the tower side float 110 and the remote float 120 can be connected and fixed by the fixed cross brace 170 and the tower cross brace 130. At this time, the remote cross brace 160 is directly connected to the bottom of the tower side float 110 and the remote float 120 to achieve connection and fixation of the bottom, so as to simplify the structure and save costs as much as possible while ensuring the overall stability of the wind turbine foundation 10.

[0075] like Figure 2 and Figure 3 As shown, in this embodiment, the wind turbine foundation 10 is mainly divided into two modules when it is produced and processed in the factory area. The two modules are respectively a first module 40 and a second module 50. The first module 40 includes two tower side floats 110, a tower side cross brace and a distal cross brace 160, wherein the ends of the two distal cross braces 160 away from the respective tower side floats 110 can be pre-connected, and the second module 50 includes a distal float 120 and a fixed cross brace 170. Moreover, in the vertical direction of the floating wind turbine 1, the bottom of the tower lower cross brace 140 is higher than the top of the distal cross brace 160.

[0076] Combination Figure 4As shown, the wind turbine foundation 10 is configured as two modules, wherein the first module 40 includes two tower side floats 110, a tower cross brace and a distal cross brace 160. By utilizing the height difference between the tower lower cross brace 140 and the distal cross brace 160, when a plurality of wind turbine foundations 10 are transported by means of a transportation vehicle, the distal cross brace 160 of any wind turbine foundation 10 can be inserted into the tower lower cross brace 140 of another wind turbine foundation 10, so as to realize the plug-in and stacking of the plurality of wind turbine foundations 10 along a fixed direction; through this configuration, the simultaneous transportation of a plurality of wind turbine foundations 10 can be met, thereby improving the transportation efficiency of the wind turbine foundation 10 and reducing the transportation cost of the wind turbine foundation 10. After the plurality of wind turbine foundations 10 are transported to a designated location, such as an installation dock location, by means of a transportation vehicle, the first module 40 is assembled with the corresponding second module 50 to form a complete wind turbine foundation 10, and finally the wind turbine tower is hoisted.

[0077] Furthermore, the first module 40 and the second module 50 are detachably connected. Figure 5 As shown, symmetrical flanges 60 are fixed on the connection surfaces of the tower side cross brace in the first module 40 and the fixed cross brace 170 in the second module 50, and each flange 60 is provided with a plurality of bolt holes 70. The tower side cross brace and the fixed cross brace 170 can be quickly connected by bolts, and the on-site assembly efficiency is high. Figure 6 As described above, symmetrical flanges 60 are also provided on the connection surfaces at the intersection of the distal floating body 120 and the two distal cross braces 160, and multiple bolt holes 70 are provided on each flange 60. The connection between the distal floating body 120 and the intersection of the two distal cross braces 160 can be quickly connected by bolts, and the on-site assembly efficiency is high. In the construction of batch wind farms, when multiple floating wind turbines 1 need to be installed, the combination of batch transportation and rapid assembly can greatly improve the transportation and installation efficiency.

[0078] Of course, in other alternative embodiments, other detachable connection methods, such as hinged connection, may be used between the first module 40 and the second module 50. Alternatively, the first module 40 and the second module 50 may be connected by fixed connection, such as welding, after being transported to the dock.

[0079] As described above, in the present embodiment, the number of the remote floats 120 is one. In other alternative embodiments, without departing from the principle and essence of the present embodiment, the number of the remote floats 120 can also be set to two or more. In this case, adjacent remote floats 120 can also be connected by a remote cross brace 160 to achieve a plurality of floating bodies that can be surrounded to form an integral structure, thereby further improving the overall structural stability of the wind turbine foundation 10.

[0080] In addition, if Figure 1As shown, in this embodiment, the floating wind turbine 1 also includes a mooring anchor chain 30, the number of which is three, and the fixed ends of the three mooring anchor chains 30 are respectively arranged on the tower side buoy 110 and the remote buoy 120, and the free ends of the three mooring anchor chains 30 are used to connect and fix to the seabed, so as to realize the installation and fixation of the entire floating wind turbine 1 at sea.

[0081] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A floating wind turbine, comprising a wind turbine foundation and a wind turbine tower, characterized in that: The fan foundation comprises: A floating body, the floating body comprising two tower side floating bodies and at least one distal floating body; A connecting cross brace, wherein the connecting cross brace comprises a tower side cross brace and a distal cross brace, the two tower side floating bodies are connected by the tower side cross brace, the distal floating body and the tower side floating body are connected by the distal cross brace, and the wind turbine tower is arranged on the tower side cross brace; Fixed cross braces, the distal floating body is connected to the wind turbine tower and / or the tower side cross braces through the fixed cross braces.

2. The floating wind turbine according to claim 1, characterized in that: One end of the fixed cross brace is connected to the remote floating body, and the other end of the fixed cross brace is connected to the connection position between the tower side cross brace and the wind turbine tower.

3. The floating wind turbine according to claim 2, characterized in that: The connection position between the tower side cross brace and the wind turbine tower is the middle position of the tower side cross brace between the two tower side floats.

4. The floating wind turbine according to any one of claims 1 to 3, characterized in that: The tower side cross brace comprises: A tower lower cross brace, the tower lower cross brace is connected to the bottom of the two tower side floats; A support column, wherein the support column is vertically arranged on the lower cross brace of the tower, and the wind turbine tower is arranged on the top of the support column; The tower upper cross brace includes two upper side cross braces, one end of the two upper side cross braces is respectively connected to the top of the two tower side floats, and the other end of the two upper side cross braces is connected to the wind turbine tower.

5. The floating wind turbine according to any one of claims 1 to 3, characterized in that: The tower side cross brace includes a tower upper cross brace and a tower lower cross brace, the tower upper cross brace and the tower lower cross brace are respectively connected to the top and bottom of the two tower side floats, and the wind turbine tower is arranged on the tower upper cross brace.

6. The floating wind turbine according to claim 5, characterized in that: The tower side cross brace also includes a supporting column, which is vertically arranged between the tower upper cross brace and the tower lower cross brace, and the supporting column is located below the wind turbine tower in the vertical direction.

7. The floating wind turbine according to claim 5, characterized in that: The number of the remote floating body is one, and the fixed cross brace connected to the remote floating body and the cross brace on the tower are arranged perpendicular to each other on the same horizontal plane.

8. The floating wind turbine according to claim 7, characterized in that: The distal cross brace is connected to the bottom of the distal floating body and the tower side floating body.

9. The floating wind turbine according to claim 8, characterized in that: The wind turbine foundation comprises a first module and a second module, wherein the first module comprises two tower side floats, the tower side cross braces and the distal cross braces, and the second module comprises the distal floats and the fixed cross braces; In the vertical direction of the floating wind turbine, the bottom of the lower cross brace of the tower is higher than the top of the distal cross brace.

10. The floating wind turbine according to claim 1, characterized in that: When the number of the distal floating bodies is two or more, adjacent distal floating bodies are connected by the distal cross brace; And / or, the floating wind turbine further comprises a mooring anchor chain, the fixed ends of the mooring anchor chain are respectively arranged on the tower side buoy and the distal buoy, and the free ends of the mooring anchor chain are used for connecting and fixing to the seabed.

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