Floating body device and wind generating set

Abstract

The utility model relates to a floating body device and a wind generating set. The floating body device comprises a floating body, a first connecting piece and a rotating body. The floating body is configured to support the tower, the first connecting piece is provided with a first end and a second end in the length direction of the first connecting piece, the first end is connected with the floating body, and the second end extends in the direction away from the floating body and protrudes out of the floating body. The rotating body comprises a first floating body and a rotating part, the first floating body is connected with the second end, and the rotating part is arranged on the first floating body and is configured to be rotationally connected with a rotating tower of the mooring system. According to the floating body device provided by the embodiment of the invention, through the arrangement of the rotating main body, the movement performance of the floating body device can be improved, so that the floating body device rotates to the position facing wind under the external environment, the dependence on a yaw system is reduced, the arrangement of the structure of the yaw system can be reduced, and the structure is simplified.

Description

Technical Field

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

[0002] Wind power generation technology is a clean and renewable energy source. Offshore wind resources are abundant and have less impact on the environment, so offshore wind power generation technology has become a hot spot for research and application. The foundation forms of offshore wind turbine components are divided into fixed foundations and floating foundations. Fixed foundations are mainly aimed at offshore shallow water areas, and can use single piles, multiple piles or jacket foundations, which have a greater impact on fisheries and the environment. Its installation requires a dedicated self-elevating platform or large floating crane installation. These large marine engineering equipment are expensive and will greatly increase the cost of offshore wind power. Floating foundations are more suitable for the use of wind turbine foundations in deep sea areas.

[0003] However, in the related art, the floating foundation has a single structure and function, which is not conducive to the cost reduction requirements of the equipment such as wind turbines used. Utility Model Content

[0004] The present application provides a floating device and a wind turbine generator set. The floating device can not only meet the support requirements but also drive the support components to rotate and has the function of changing the angle, which is beneficial to ensuring the cost reduction needs of the wind turbine generator set and other equipment used.

[0005] The present application provides a floating device, which includes a floating body, a first connecting member, and a rotating body. The floating body is configured as a supporting tower, and the first connecting member has a first end and a second end along its length direction, the first end is connected to the floating body, and the second end extends in a direction away from the floating body and protrudes from the floating body. The rotating body includes a first floating body and a rotating part, the first floating body is connected to the second end, and the rotating part is arranged on the first floating body and is configured to be rotatably connected to the turret of the mooring system.

[0006] In some embodiments, the rotating portion includes one of a cavity and a protrusion disposed on the first floating body.

[0007] In some embodiments, the distance between the first end and the second end is adjustable.

[0008] In some embodiments, the floating bodies are arranged symmetrically with respect to the first plane, and the central axis of the rotating part of the rotating body is located on the first plane.

[0009] In some embodiments, the floating body includes multiple second floats and second connecting members, the multiple second floats are arranged at intervals from each other, second connecting members are respectively connected between adjacent second floats, the first connecting member is connected to at least one second float, and the first float extends along the first direction.

[0010] In some embodiments, the number of second floats is three, the line connecting the midpoints of the orthographic projections of the three second floats along the first direction forms an isosceles triangle, and the midpoint of the orthographic projection of the rotating body along the first direction is located on the perpendicular bisector of the isosceles triangle.

[0011] In some embodiments, the first buoy and / or at least one of the plurality of second buoys has a cavity, the cavity is filled with a ballast medium, and the weight of the ballast medium is adjustable.

[0012] On the other hand, an embodiment of the present application provides a wind turbine generator set, which includes any of the above-mentioned floating devices, a tower, a nacelle, an impeller, and a mooring system. The tower is erected on the floating body of the floating device, the nacelle is installed on the side of the tower away from the floating body, the impeller is connected to the nacelle, and the mooring system includes a mooring cable and a turret, one end of the mooring cable is configured to be moored to the seabed, and the other end is connected to the turret, and the turret is rotatably connected to the rotating part.

[0013] In some embodiments, the impeller includes a hub and blades connected to the hub, the hub is connected to a side of the nacelle away from the rotating body, and along the height direction of the tower, at least part of the orthographic projection of the hub is located outside the orthographic projection of the floating body.

[0014] In some embodiments, the central axis of the rotating portion of the rotating body is arranged orthogonally to the rotation axis of the impeller.

[0015] In some embodiments, the tower, the nacelle and the floating device are symmetrical structures with the same plane as the symmetry plane.

[0016] In some embodiments, the tower includes a main column and multiple auxiliary columns, one end of each auxiliary column is connected to the floating body, and the other end converges to the main column and is connected to the main column, the cabin is connected to the main column, and a fairing structure is provided on at least one of the main column and the auxiliary column.

[0017] In some embodiments, the rectification structure includes at least one of a streamlined structure or a V-shaped structure, and the outer periphery of the main column and at least two auxiliary columns is covered with the rectification structure.

[0018] A floating device and a wind turbine generator set provided by an embodiment of the present application, the floating device includes a floating body, a first connecting member and a rotating body. The floating body can be used to support a tower to ensure the support requirements for other components of the wind turbine generator set. The first end of the first connecting member is connected to the floating body, and the second end is connected to the first floating body, so that the rotating body and the floating body are connected as a whole. Since the rotating body includes a first floating body and a rotating part, the rotating part is arranged on the first floating body and is configured to be rotatably connected to the turret of the mooring system, the movement performance of the floating device can be improved, so that the floating device can drive the tower and the impeller supported by it to rotate to a position facing the wind under the action of external environment such as external force of equipment or wind energy, so as to ensure the yaw requirement of the wind turbine generator set and reduce the dependence of the wind turbine generator set on the yaw system. Therefore, the structural setting of the yaw system can be omitted or the startup of the yaw system can be reduced, thereby further reducing the cost of the wind turbine generator assembly and improving the economic benefits of the entire wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Figure 1 is a schematic diagram of a wind turbine generator set according to an embodiment of the present application; Figure 2 is a structural schematic diagram of a wind turbine generator set according to an embodiment of the present application;

[0021] Figure 3 It is a partial cross-sectional schematic diagram of a turret and a rotating body of a wind turbine generator set according to an embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of a partial structure of a wind turbine generator set according to an embodiment of the present application;

[0023] Figure 5 is a schematic side view of a partial structure of a wind turbine generator set according to an embodiment of the present application;

[0024] Figure 6 It is a schematic side view of a partial structure of a wind turbine generator set according to another embodiment of the present application.

[0025] In the attached figure:

[0026] 100 floating body device; Y first direction; A1 first plane;

[0027] 110 floating body; 111 second floating body; 112 second connecting member;

[0028] 120 first connecting member; 121 first end; 122 second end;

[0029] 130 rotating body; 131 first floating body; 132 rotating part;

[0030] 200 towers;

[0031] 210 main columns; 220 auxiliary columns;

[0032] 300 engine room;

[0033] 400 impeller;

[0034] 410 hub; 420 blade;

[0035] 500 mooring systems;

[0036] 510 mooring cables;

[0037] 520 turret; 521 support section; 5211 sealing structure; 522 stage;

[0038] 600 rectifier structure;

[0039] 700 adapter.

[0040] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0041] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0042] The directional words appearing in the following description are all directions shown in the figure, and do not limit the anti-deformation device of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] Wind power generation technology is a clean and renewable energy source. Offshore wind resources are abundant and have less impact on the environment, so offshore wind power generation technology has become a hot spot for research and application. The foundation forms of offshore wind turbine components are divided into fixed foundations and floating foundations. Fixed foundations are mainly aimed at shallow offshore waters, and can use single piles, multiple piles or jacket foundations, which have a greater impact on fisheries and the environment. Its installation requires a special self-elevating platform or a large floating crane. These large marine engineering equipment are expensive and will greatly increase the cost of offshore wind power. Floating foundations are more suitable for the use of wind turbine foundations in deep sea areas. However, in related technologies, the floating foundation has a large structural weight and a complex structure, resulting in high costs.

[0044] In order to solve the problem that the floating foundation in the related art has a heavy structural weight, a complex structure and a high cost, a floating device and a wind turbine generator set are proposed.

[0045] Please refer to Figure 1 As shown, the embodiment of the present application provides a wind turbine generator set, including a floating device 100, a tower 200, a generator (not shown in the figure), a nacelle 300, an impeller 400, and a mooring system 500. The tower 200 is connected to the floating device 100, the nacelle 300 is arranged at the top of the tower 200, and the generator is arranged in the nacelle 300. The generator can be arranged in the nacelle 300, and of course, it can also be arranged outside the nacelle 300. The impeller 400 includes a hub 410 and a plurality of blades 420 connected to the hub 410. The impeller 400 is connected to the rotor of the generator through its hub 410. When the wind acts on the blades 420, the entire impeller 400 and the rotor of the generator are driven to rotate relative to the stator, thereby meeting the power generation requirements of the wind turbine generator set.

[0046] Please refer to Figures 2 to 4 As shown, the present application also provides a floating device 100, which includes a floating body 110, a first connecting member 120 and a rotating body 130. The floating body 110 is configured to support the tower 200, and the first connecting member 120 has a first end 121 and a second end 122 along its length direction, the first end 121 is connected to the floating body 110, and the second end 122 extends in a direction away from the floating body 110 and protrudes from the floating body 110. The rotating body 130 includes a first floating body 131 and a rotating part 132, the first floating body 131 is connected to the second end 122, and the rotating part 132 is arranged on the first floating body 131 and is configured to be rotatably connected to the turret 520 of the mooring system 500.

[0047] The structure of the floating body 110 includes a truss structure, a combination of multiple columnar structures, and the like.

[0048] The structure of the first connecting member 120 may include a columnar structure, a plate-like structure, a hollow frame structure, etc., and is mainly used to connect the floating body 110 with the first floating body 131 .

[0049] The rotating part 132 is configured to be rotatably connected to the turret 520 of the mooring system 500, which means that the rotating part 132 can rotate around the turret 520, and due to the weather vane effect, the floating device 100 will be moored at the orientation with the smallest environmental force.

[0050] The rotating part 132 includes but is not limited to a protrusion or a groove arranged on the first floating body 131. The floating body device 100 provided in one embodiment of the present application includes a floating body 110, a first connecting member 120 and a rotating body 130. The floating body 110 can be used to support the tower 200 to ensure the support requirements of other components of the wind turbine generator set. The first end 121 of the first connecting member 120 is connected to the floating body 110, and the second end 122 is connected to the first floating body 131, so that the rotating body 130 and the floating body 110 are connected as a whole. Since the rotating body 130 includes the first floating body 131 and the rotating part 132, the rotating part 132 is arranged on the first floating body 131. The buoy 131 is configured to be rotatably connected to the turret 520 of the mooring system 500, which can improve the movement performance of the floating device 100, so that the floating device 100 can drive the tower 200 and the supported impeller 400 to rotate to a position facing the wind under the influence of external environment such as external force of the equipment or wind energy, thereby ensuring the yaw requirement of the wind turbine and reducing the dependence of the wind turbine on the yaw system. Therefore, the structural setting of the yaw system can be omitted or the startup of the yaw system can be reduced, thereby further reducing the cost of the wind turbine components and improving the economic benefits of the entire wind turbine.

[0051] In some embodiments, the rotating portion 132 includes one of a cavity and a protrusion disposed on the first floating body 131 .

[0052] Optionally, if the structure of the rotating part 132 on the first float 131 includes a concave cavity structure, then the turret 520 may be provided with a protrusion structure to be rotatably connected to the rotating part 132; if the structure of the rotating part 132 on the first float 131 includes a protrusion, then the turret 520 may be provided with a concave cavity structure to be rotatably connected to the rotating part 132.

[0053] The rotating part 132 can be directly rotatably connected to the turret 520 of the mooring system 500. When a protrusion is used, a cylindrical protrusion can be used, and when a cavity is used, a circular cavity can be used. Of course, in some embodiments, the rotating part 132 can be indirectly rotatably connected to the turret 520 of the mooring system 500, for example, it can be indirectly connected through an adapter 700 such as a rolling bearing or a sliding bearing. At this time, when the rotating part 132 uses a protrusion, the protrusion is not limited to a cylindrical shape, and can also be a polygonal shape, which can be indirectly connected through an adapter 700.

[0054] Optionally, the turret 520 includes a support section 521 and multiple stage stages 522, the multiple stage stages 522 are connected to the support section 521 and arranged along the axial direction of the turret 520, the shape of the rotating part 132 includes a protruding structure, and the shapes of the multiple stage stages 522 match the shape of the rotating part 132.

[0055] Optionally, when the adapter 700 is included, the adapter 700 may be disposed on the wall surface enclosing the rotating portion 132, for example, the adapter 700 is disposed between one of the stage portions 522 and the wall surface enclosing the rotating portion 132. Of course, a groove may also be provided inside the rotating portion 132, and the adapter 700 may be disposed in the groove and rotatably connected to the stage portion 522.

[0056] Optionally, the turret 520 abuts against the first floating body 131 and is provided with a sealing structure 5211 , and the sealing structure 5211 is used to achieve sealing between the turret 520 and the rotating body 130 .

[0057] Of course, the rotating portion 132 may also be disposed around the turret 520 to enable the rotating portion 132 to rotate relative to the turret 520 .

[0058] A floating device 100 provided in an embodiment of the present application has a rotating part 132 including a cavity and a protrusion arranged on the first floating body 131. The structure is simple to implement, and the setting of the cavity or the protrusion can be selected according to actual conditions. The structural setting is flexible, and the cavity or the protrusion can be rotatably connected to the turret 520 of the mooring system 500 to ensure the yaw requirement of the wind turbine generator set.

[0059] In some embodiments, the distance between the first end 121 and the second end 122 is adjustable.

[0060] A floating device 100 provided in an embodiment of the present application can meet different requirements for the distance between the floating body and the floating body 110 by setting the spacing between the first end 121 and the second end 122 to be adjustable, and the spacing between the first end 121 and the second end 122 can be adjusted according to the volume of the floating body 110 and the advantages and disadvantages during rotation, thereby achieving the effects of reducing costs and saving labor.

[0061] The structure of the first connecting member 120 can be a telescopic cylinder structure, a connecting rod structure, etc. If the structure of the first connecting member 120 includes a connecting rod structure, the positions of the first end 121 and the second end 122 can be adjusted. For example, the two ends of the connecting rod structure include a plurality of connecting holes arranged along the length direction of the first connecting member 120. The first connecting member 120 can be connected to the floating body and the floating body 110 through the connecting holes. Through the selective connection of the connecting holes, the relative spacing between the first end 121 and the second end 122 can be adjusted.

[0062] In some embodiments, the floating bodies 110 are arranged symmetrically with respect to the first plane A1 , and the central axis of the rotating portion 132 of the rotating body 130 is located on the first plane A1 .

[0063] The floating device 100 provided in one embodiment of the present application can be more stable and reliable when floating through the symmetrical arrangement of the floating body 110, reduce the probability of the floating body 110 tilting when rotating, and provide a more stable support platform for the nacelle 300 and the impeller 400. The setting that the central axis of the rotating body 130 is located on the first plane A1 can improve the wind accuracy of the entire floating device 100. In addition, with the above setting, the first connecting member 120 as a whole can be used as a turning force arm, so that the turning force arm is the longest, so that when the floating device 100 is rotated with the turret 520 of the mooring system 500 as the rotation center, it is more labor-saving and reduces the difficulty of rotation.

[0064] In some embodiments, the floating body 110 includes a plurality of second floats 111 and a second connecting member 112. The plurality of second floats 111 are arranged at intervals from each other, and the second connecting members 112 are respectively connected between adjacent second floats 111. The first connecting member 120 is connected to at least one second float 111, and the first float 131 extends along the first direction Y.

[0065] The number of the second floating bodies 111 includes three, four, and the like.

[0066] Optionally, the structure of the second connecting member 112 may include one or more rod-like structures, a plate-like structure, or a hollow frame structure, etc., which is mainly used to connect the second connecting members 112 to each other.

[0067] The floating device 100 provided in an embodiment of the present application has a more stable structure through the arrangement of multiple second floating bodies 111, and can better maintain stability in harsh environments, thereby improving reliability.

[0068] In some embodiments, the number of second floats 111 is three, the line connecting the midpoints of the orthographic projections of the three second floats 111 along the first direction Y forms an isosceles triangle, and the midpoint of the orthographic projection of the rotating body 130 along the first direction Y is located on the perpendicular bisector of the isosceles triangle.

[0069] A floating body device 100 provided in an embodiment of the present application increases the stability of the floating body 110 structure by setting the line connecting the midpoints of the orthographic projections of the three second floating bodies 111 along the first direction Y to be an isosceles triangle, which can also save the use of materials. There is no need to set up multiple structures to assemble the floating body 110, thereby reducing costs. In addition, the above-mentioned setting uses the perpendicular bisector of the isosceles triangle and the first connecting member 120 as the turning force arm, which can further save effort and reduce the difficulty of rotation.

[0070] In some embodiments, the first buoy 131 and / or at least one of the plurality of second buoys 111 has a cavity filled with a ballast medium, and the weight of the ballast medium is adjustable.

[0071] The first float 131 or at least one of the plurality of second floats 111 may have a cavity, or the first float 131 and at least one of the plurality of second floats 111 may have a cavity.

[0072] The number of the second floating bodies 111 having cavities may be one, two, or more. For example, when the number of the second floating bodies 111 having cavities is three, a ballast medium may be provided in the cavities of the second floating bodies 111 .

[0073] Optionally, a suction pump may be used to inject or extract ballast medium into the cavity to ensure the ballast effect.

[0074] A floating device 100 provided in an embodiment of the present application has a first floating body 131 and / or at least one of the multiple second floating bodies 111 having a cavity, and a ballast medium is filled in the cavity, which can offset the steady-state wind heeling moment, reduce the load of the wind turbine generator set, and improve the power generation efficiency.

[0075] On the other hand, an embodiment of the present application provides a wind turbine generator set, which includes any of the above-mentioned floating device 100, a tower 200, a nacelle 300, an impeller 400 and a mooring system 500. The tower 200 is erected on the floating body 110 of the floating device 100, the nacelle 300 is installed on a side of the tower 200 away from the floating body 110, the impeller 400 is connected to the nacelle 300, and the mooring system 500 includes a mooring cable 510 and a turret 520, one end of the mooring cable 510 is configured to be moored to the seabed, and the other end is connected to the turret 520, and the turret 520 is rotatably connected to the rotating part 132.

[0076] The number of mooring cables 510 includes multiple ones, and the mooring cables 510 include but are not limited to distributed catenary cables and vertical tensioned ones. The turret 520 connected to the mooring cables 510 can be directly connected to the rotating part 132, or can be indirectly connected to the rotating part 132. For example, the mooring cables 510 can be connected to a separate float, and the float is connected to the rotating part 132 through a hinged rod.

[0077] A wind turbine generator set provided in an embodiment of the present application can reduce the dependence of the entire wind turbine generator set on the yaw system, improve the utilization rate of environmental resources, and improve the economic benefits of the entire wind turbine generator set through the arrangement of a floating device 100, a tower 200, a nacelle 300, an impeller 400 and a mooring system 500.

[0078] Exemplarily, the rotating part 132 includes a cavity provided on the first floating body 131, and the turret 520 is a protruding structure. Optionally, the wind turbine generator set further includes a pitch system, which is installed on the hub 410 and is used to control the position angle of the blade 420 relative to the rotation plane.

[0079] Please refer to Figure 5 As shown, in some embodiments, the impeller 400 includes a hub 410 and blades 420 connected to the hub 410, the hub 410 is connected to a side of the nacelle 300 away from the rotating body 130, and along the height direction of the tower 200, at least a portion of the orthographic projection of the hub 410 is located outside the orthographic projection of the floating body 110.

[0080] The height direction of the tower 200 refers to a vertical direction.

[0081] A wind turbine generator set provided in an embodiment of the present application has a hub 410 that is away from the rotating body 130 and an orthographic projection of the hub 410 that is at least partially located outside the floating body 110. This reduces the probability of the blades 420 sweeping the tower 200 when the blades 420 rotate, and allows the carrying of larger blades 420, thereby improving the reliability of the operation of the wind turbine generator set.

[0082] In some embodiments, the central axis of the rotating portion 132 of the rotating body 130 is arranged to be orthogonal to the rotation axis of the impeller 400 .

[0083] The wind turbine generator set provided in an embodiment of the present application can improve the wind-facing accuracy of the blades 420 through the above configuration.

[0084] In some embodiments, the tower 200 , the nacelle 300 , and the floating device 100 are symmetrical structures with the same plane as the symmetry plane.

[0085] A wind turbine generator set provided in an embodiment of the present application can increase the balance of the entire wind turbine generator set by setting the tower 200, the nacelle 300 and the floating device 100 as symmetrical structures with the same plane as the symmetry plane, making it more stable during use, and improving the ability to operate smoothly in harsh environments, and increasing the probability of the blades 420 facing the wind.

[0086] Please refer to Figure 6 As shown, in some embodiments, the tower 200 includes a main column 210 and a plurality of auxiliary columns 220, one end of each auxiliary column 220 is connected to the floating body 110, and the other ends converge to the main column 210 and are connected to the main column 210, the cabin 300 is connected to the main column 210, and a fairing structure 600 is provided on at least one of the main column 210 and the auxiliary column 220.

[0087] The main column 210 has an adjustable length along the axial direction, and its size design can be optimized to achieve the best performance and cost.

[0088] The wind turbine generator set provided by an embodiment of the present application can reduce the impact of the wind field on the wind turbine generator set through the rectifying structure 600, and can increase the wind accuracy of the tower 200. The arrangement of the main column 210 and the auxiliary column 220 can allow wind energy to pass through, which is beneficial to the blade 420 to utilize wind energy.

[0089] Optionally, the number of the main columns 210 includes one, the number of the auxiliary columns 220 includes three, and the main columns 210 and the auxiliary columns 220 include columnar structures, rod-shaped structures, etc.

[0090] Exemplarily, the auxiliary column 220 and one side of the floating body 110 connected to the auxiliary column 220 together form a tetrahedron structure.

[0091] In some embodiments, the rectification structure 600 includes at least one of a streamlined structure or a V-shaped structure, and the outer periphery of the main column 210 and at least two auxiliary columns 220 is covered with the rectification structure 600 .

[0092] A streamlined structure is an object shape where there is no obvious separation of airflow at the surface.

[0093] Optionally, the number of auxiliary columns 220 is three, and the outer periphery of the main column 210 and at least two auxiliary columns 220 is covered with a rectifying structure 600.

[0094] The rectifying structure 600 may be disposed at a middle position, an edge position, etc. of the main column 210 or the auxiliary column 220 .

[0095] The wind turbine generator set provided in one embodiment of the present application makes it easy to manufacture the rectifying structure 600 through the arrangement of the above structure, and effectively reduces the influence of the wind field on the wind turbine generator set.

[0096] The steps for installing a wind turbine generator set provided in one embodiment of the present application include:

[0097] Anchoring devices are installed at the bottom of the mooring line 510 by driving piles or installing suction anchors;

[0098] The mooring cable 510 is arranged on the seabed according to a predetermined process. After the mooring cable 510 is laid, corresponding marks are made and the mooring cable 510 is fixed to the turntable buoy;

[0099] The floating device 100 is constructed on flat ground or in a dock, and then the floating device 100 is undocked or launched into the water by sliding;

[0100] Using a crane on the shore, the tower 200, the nacelle 300 and the impeller 400 are installed on the floating device 100;

[0101] The entire wind turbine generator set is towed to the sea for installation by wet towing;

[0102] Connect the pre-laid mooring cables 510 to the floating device 100: restore each mooring cable 510 to the water surface, pull the mooring cables 510 to the floating device 100 and connect them;

[0103] The overall draft and inclination of the floating device 100 are adjusted to a working angle.

[0104] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A floating device (100), characterized in that: include: A floating body (110) configured to support a tower (200); A first connecting member (120) having a first end (121) and a second end (122) along its length direction, wherein the first end (121) is connected to the floating body (110), and the second end (122) extends in a direction away from the floating body (110) and protrudes from the floating body (110); The rotating body (130) comprises a first floating body (131) and a rotating part (132), wherein the first floating body (131) is connected to the second end (122), and the rotating part (132) is arranged on the first floating body (131) and is configured to be rotatably connected to a turret (520) of a mooring system (500).

2. The floating device (100) according to claim 1, characterized in that: The rotating portion (132) includes one of a concave cavity and a protrusion arranged on the first floating body (131).

3. The floating device (100) according to claim 1, characterized in that: The distance between the first end (121) and the second end (122) is adjustable.

4. The floating device (100) according to any one of claims 1 to 3, characterized in that: The floating bodies (110) are arranged symmetrically with the first plane (A1) as a reference, and the central axis of the rotating part (132) of the rotating body (130) is located on the first plane (A1).

5. The floating device (100) according to claim 1, characterized in that: The floating body (110) includes a plurality of second floating bodies (111) and a second connecting member (112); the plurality of second floating bodies (111) are arranged at intervals from each other; adjacent second floating bodies (111) are respectively connected with the second connecting members (112); the first connecting member (120) is connected to at least one of the second floating bodies (111); and the first floating body (131) extends along a first direction (Y).

6. The floating device (100) according to claim 5, characterized in that: The number of the second floating bodies (111) is three, and the line connecting the midpoints of the orthographic projections of the three second floating bodies (111) along the first direction (Y) forms an isosceles triangle, and the midpoint of the orthographic projection of the rotating body (130) along the first direction (Y) is located on the perpendicular bisector of the isosceles triangle.

7. The floating device (100) according to claim 5, characterized in that: The first floating body (131) and / or at least one of the plurality of second floating bodies (111) has a cavity, the cavity is filled with a ballast medium, and the weight of the ballast medium is adjustable.

8. A wind turbine generator set, characterized in that: include: The floating device (100) according to any one of claims 1 to 7; A tower (200) erected on the floating body (110) of the floating device (100); A nacelle (300) is installed on a side of the tower (200) away from the floating body (110); An impeller (400) connected to the nacelle (300); A mooring system (500) comprises a mooring cable (510) and a turret (520). One end of the mooring cable (510) is configured to be moored to the seabed, and the other end is connected to the turret (520). The turret (520) is rotatably connected to the rotating part (132).

9. The wind turbine generator set according to claim 8, characterized in that: The impeller (400) comprises a hub (410) and blades (420) connected to the hub (410); the hub (410) is connected to a side of the nacelle (300) facing away from the rotating body (130); along the height direction of the tower (200), at least part of the orthographic projection of the hub (410) is located outside the orthographic projection of the floating body (110).

10. The wind turbine generator set according to claim 8, characterized in that: The central axis of the rotating part (132) of the rotating body (130) is arranged orthogonally to the rotating axis of the impeller (400).

11. The wind turbine generator set according to claim 8, characterized in that: The tower (200), the nacelle (300) and the floating device (100) are symmetrical structures with the same plane as the symmetry plane.

12. The wind turbine generator set according to claim 8, characterized in that: The tower (200) comprises a main column (210) and a plurality of auxiliary columns (220), one end of each of the auxiliary columns (220) is connected to the floating body (110), and the other ends of each auxiliary column (220) converge to the main column (210) and are connected to the main column (210), the cabin (300) is connected to the main column (210), and a rectifying structure (600) is provided on at least one of the main column (210) and the auxiliary column (220).

13. The wind turbine generator set according to claim 12, characterized in that: The rectification structure (600) comprises at least one of a streamlined structure and a V-shaped structure, and the outer periphery of the main column (210) and at least two of the auxiliary columns (220) is covered with the rectification structure (600).

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