Floating type offshore wind power generation device

Abstract

The invention relates to the technical field of offshore wind power equipment, and discloses a floating type offshore wind power generation device which comprises a floating foundation, a mooring assembly, a supporting assembly, a cabin and an impeller, the floating foundation is suitable for floating on the sea, one end of the mooring assembly is fixed to the seabed, the other end of the mooring assembly is connected with the floating foundation, and the supporting assembly is arranged at the top of the floating foundation; the bottom of the cabin is movably connected with the supporting assembly, the impeller is rotationally arranged on the side portion of the cabin, and the side, away from the cabin, of the impeller is movably connected with the supporting assembly. The floating type offshore wind power generation device rotates around an anchor point of the mooring assembly on the seabed, overall passive yawing of the floating type offshore wind power generation device is achieved, meanwhile, the cabin and the impeller are movably connected with the supporting assembly, active yawing of the impeller can be achieved, wind can be accurately aligned, and the power generation efficiency of a unit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power equipment, and in particular to a floating offshore wind power generation device. Background Art

[0002] Floating wind turbines are a technology that uses floating structures to support wind turbines to generate electricity at sea. Unlike traditional fixed wind turbines, floating wind turbines can be deployed in deeper waters with richer wind energy resources, thereby significantly improving power generation efficiency.

[0003] In the prior art, floating wind turbines are usually installed on a foundation floating in the sea, and wind energy is converted into electricity through impellers for power generation. However, since the directions of the incoming wind and waves at sea are not always exactly the same, the floating wind turbine cannot ensure that the impeller is always facing the incoming wind direction, resulting in the inability to maximize the capture of wind energy. Summary of the invention

[0004] In view of this, the present invention provides a floating offshore wind power generation device to solve the problem in the prior art that the floating wind turbine cannot ensure that the impeller is always facing the incoming wind direction, thereby failing to maximize the capture of wind energy.

[0005] The present invention provides a floating offshore wind power generation device, comprising a floating foundation, a mooring assembly, a supporting assembly, a cabin and an impeller. The floating foundation is suitable for floating on the sea, one end of the mooring assembly is fixed to the seabed, and the other end is connected to the floating foundation, the supporting assembly is arranged on the top of the floating foundation, the bottom of the cabin is movably connected to the supporting assembly, the impeller is rotatably arranged on the side of the cabin, and the side of the impeller away from the cabin is movably connected to the supporting assembly.

[0006] Beneficial effects: The present invention adopts a single-point mooring method, which can realize the passive yaw of the floating offshore wind power generation device. When the direction of wind and waves is inconsistent with the direction of the impeller, it will rotate around the anchor point of the mooring component on the seabed to realize the overall passive yaw of the floating offshore wind power generation device. At the same time, the cabin and the impeller are movably connected to the supporting assembly to realize the active yaw of the impeller, thereby accurately facing the wind and improving the power generation efficiency of the unit.

[0007] In an optional embodiment, a rotation groove is provided at one end of the impeller away from the nacelle, and the support assembly is movably installed in the rotation groove.

[0008] Beneficial effect: The present invention provides a rotation groove at the end of the impeller away from the cabin. When the passive yaw of the mooring assembly cannot ensure that the impeller is facing the incoming wind direction, the cabin is rotated to deflect the rotation groove on the impeller and the supporting assembly by a certain angle, thereby enabling the impeller to accurately face the wind and improve the power generation efficiency of the unit.

[0009] In an optional embodiment, the floating offshore wind power generation device further includes a rotating shaft bearing, the rotating shaft bearing is rotatably connected to the impeller, and the rotating groove is arranged on the rotating shaft bearing.

[0010] In an optional embodiment, the support assembly includes a first support member and a second support member, one end of the first support member is fixedly connected to the floating foundation, and the other end is provided with a connecting portion, which is movably installed in a rotating groove, and one end of the second support member is fixedly connected to the floating foundation, and the other end is rotatably connected to the bottom of the cabin.

[0011] Beneficial effect: When the passive yaw of the mooring assembly cannot ensure that the impeller is facing the incoming wind direction, the cabin is rotated to deflect the rotating groove and the connecting part on the impeller by a certain angle, so that the impeller can face the wind accurately and improve the power generation efficiency of the unit.

[0012] In an optional embodiment, a supporting platform is provided on the top of the second supporting member, and further comprises a yaw bearing, wherein the yaw bearing is movably arranged between the nacelle and the supporting platform.

[0013] Beneficial effect: When the passive yaw of the mooring assembly of the present invention cannot ensure that the impeller is facing the incoming wind direction, the yaw bearing drives the cabin to rotate on the supporting platform, and the cabin drives the impeller to deflect a certain angle, so that the impeller can accurately face the wind and improve the power generation efficiency of the unit.

[0014] In an optional embodiment, the second support member includes a second support rod and a third support rod, one end of the second support rod is connected to the support platform, and the other end is connected to the floating foundation, one end of the third support rod is connected to the support platform, and the other end is connected to the floating foundation, and a triangular frame structure is enclosed between the second support rod, the third support rod and the floating foundation.

[0015] Beneficial effect: In the present invention, the second support rod, the third support rod and the floating foundation form a triangular frame structure, which can make the support assembly have a stable support and reduce the overall weight of the floating offshore wind power generation device.

[0016] In an optional embodiment, the floating foundation includes buoys and connecting rods, the plurality of buoys are suitable for floating on the sea, one end of the mooring assembly is connected to the buoys, and the plurality of connecting rods connect adjacent buoys.

[0017] Beneficial effect: The present invention adopts a connecting rod to connect the buoys, which can reduce the overall weight of the floating offshore wind power generation device.

[0018] In an optional embodiment, a ballast tank is provided at the bottom of the pontoon.

[0019] Beneficial effects: The present invention provides a ballast tank at the bottom of the buoy, which can adjust the draft and metacentric height of the buoy to ensure the stability of the floating offshore wind power generation device at sea.

[0020] In an optional embodiment, the number of buoys is three, and a triangular prism structure is enclosed between the connecting rod and the buoys.

[0021] In an optional embodiment, the mooring assembly includes an anchor and a mooring rope, wherein the anchor is suitable for being arranged on the seabed, and one end of the mooring rope is connected to the anchor, and the other end of the mooring rope is connected to the floating foundation.

[0022] Beneficial effect: The present invention adopts a single-point mooring method of mooring rope, which can realize the passive yaw of the floating offshore wind power generation device. When the direction of wind and waves is inconsistent with the direction of the impeller, the floating offshore wind power generation device will rotate around the anchor to realize the overall passive yaw of the floating offshore wind power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a floating offshore wind power generation device according to an embodiment of the present invention;

[0025] Figure 2 A side view of a nacelle and an impeller in a floating offshore wind power generation device according to an embodiment of the present invention;

[0026] Figure 3 A front view of a nacelle and an impeller in a floating offshore wind power generation device according to an embodiment of the present invention;

[0027] Figure 4 A front view of a floating offshore wind power generation device according to an embodiment of the present invention;

[0028] Figure 5 A side view of a floating offshore wind power generation device according to an embodiment of the present invention;

[0029] Figure 6 A top view of a floating offshore wind power generation device according to an embodiment of the present invention;

[0030] Figure 7 The figure is a top view of a floating offshore wind power generation device in a yaw state according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Floating foundation; 101. buoy; 102. connecting rod; 103. ballast tank;

[0033] 2. Mooring components; 201. Anchor; 202. Mooring rope;

[0034] 3. Support assembly; 301. First support member; 3011. Connecting portion; 302. Second support member; 3021. Second support rod; 3022. Third support rod; 303. Support platform;

[0035] 4. Engine room;

[0036] 5. impeller; 501. rotating groove; 502. rotating shaft bearing;

[0037] 6. Yaw bearing. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] Combine the following Figures 1 to 7 , describing an embodiment of the present invention.

[0040] According to an embodiment of the present invention, Figures 1 to 7 As shown, a floating offshore wind power generation device is provided, including a floating foundation 1, a mooring component 2, a supporting component 3, a nacelle 4 and an impeller 5. The floating foundation 1 is suitable for floating on the sea, one end of the mooring component 2 is fixed to the seabed, and the other end is connected to the floating foundation 1, the supporting component 3 is arranged on the top of the floating foundation 1, the bottom of the nacelle 4 is movably connected to the supporting component 3, the impeller 5 is rotatably arranged on the side of the nacelle 4, and the side of the impeller 5 away from the nacelle 4 is movably connected to the supporting component 3.

[0041] Specifically, in this embodiment, the floating foundation 1 is floated on the sea, one end of the mooring component 2 is fixed to the seabed, and the other end is connected to the bottom of one side of the floating foundation 1, the bottom of the support component 3 is fixed to the top of the floating foundation 1, the bottom of the cabin 4 is movably connected to the top of the support component 3, the impeller 5 is rotatably arranged on the side of the cabin 4, and the side of the impeller 5 away from the cabin 4 is movably connected to the support component 3.

[0042] The present invention adopts a single-point mooring method, which can realize the passive yaw of the floating offshore wind power generation device. When the direction of wind and waves is inconsistent with the direction of the impeller 5, it will rotate around the anchor point of the mooring component 2 on the seabed to realize the overall passive yaw of the floating offshore wind power generation device. At the same time, the cabin 4 and the impeller 5 are movably connected to the support component 3, which can realize the active yaw of the impeller 5, thereby accurately facing the wind and improving the power generation efficiency of the unit.

[0043] In one embodiment, Figure 3 As shown, a rotation groove 501 is provided at one end of the impeller 5 away from the nacelle 4 , and the support assembly 3 is movably installed in the rotation groove 501 .

[0044] Specifically, in this embodiment, the rotation groove 501 is a horizontal arc groove that is concave inwards. Figure 7 As shown, when the impeller 5 needs to be actively yaw adjusted, the nacelle 4 drives the impeller 5 to rotate a certain angle in the water xy plane, and the impeller 5 can rotate around the support assembly 3 in the xy plane within the limit range of the rotation groove 501.

[0045] The present invention provides a rotation groove 501 at the end of the impeller 5 away from the nacelle 4. When the passive yaw of the mooring assembly 2 cannot ensure that the impeller 5 is facing the incoming wind direction, the nacelle 4 is rotated to deflect the rotation groove 501 on the impeller 5 and the support assembly 3 by a certain angle, so that the impeller 5 can accurately face the wind and improve the power generation efficiency of the unit.

[0046] In one embodiment, Figure 3 As shown, the floating offshore wind power generation device further includes a rotating shaft bearing 502 , which is rotatably connected to the impeller 5 , and the rotating groove 501 is arranged on the rotating shaft bearing 502 .

[0047] Specifically, in this embodiment, the impeller 5 is rotatably connected to the power generation equipment in the cabin 4 through a rotating shaft. When the incoming wind blows through the impeller 5, the impeller 5 drives the rotating shaft to rotate to generate electricity. The impeller 5 is rotatably installed on the rotating shaft bearing 502. When the impeller 5 needs to actively yaw, the cabin 4 drives the impeller 5 to rotate in the water xy plane. At this time, the rotating shaft bearing 502 rotates around the support assembly 3.

[0048] In one embodiment, Figure 1 As shown, the support assembly 3 includes a first support member 301 and a second support member 302. One end of the first support member 301 is fixedly connected to the floating foundation 1, and the other end is provided with a connecting portion 3011. The connecting portion 3011 is movably installed in the rotating groove 501. One end of the second support member 302 is fixedly connected to the floating foundation 1, and the other end is rotatably connected to the bottom of the cabin 4.

[0049] Specifically, in this embodiment, the bottom of the first support member 301 is fixedly connected to the top of the floating foundation 1, the connecting portion 3011 on the top of the first support member 301 is movably installed in the rotating groove 501, and the shape of the connecting portion 3011 matches the rotating groove 501. The second support member 302 is arranged on the top of the floating foundation 1 relative to the first support member 301, and the top of the second support member 302 is rotatably connected to the bottom of the cabin 4. When the impeller 5 needs to actively yaw, the cabin 4 drives the impeller 5 to rotate in the water xy plane. At this time, the bottom of the cabin 4 rotates around the second support member 302, and the shaft bearing 502 rotates around the first support member 301.

[0050] When the passive yaw of the mooring assembly 2 cannot ensure that the impeller 5 is facing the incoming wind direction, the nacelle 4 is rotated to deflect the rotating groove 501 on the impeller 5 and the connecting portion 3011 by a certain angle, so that the impeller 5 can face the wind accurately and improve the power generation efficiency of the unit.

[0051] In one embodiment, Figure 1 and Figure 2 As shown, the floating offshore wind power generation device further includes a yaw bearing 6 , a support platform 303 is provided on the top of the second support member 302 , and the yaw bearing 6 is movably arranged between the nacelle 4 and the support platform 303 .

[0052] Specifically, in this embodiment, the yaw bearing 6 includes a rotating seat ring, a fixed seat ring and a rotating drive. The rotating seat ring is fixedly connected to the bottom of the cabin 4, the fixed seat ring is sleeved in the rotating seat ring, and the inner side wall of the fixed seat ring is provided with a first tooth portion. The rotating drive is fixedly installed on the cabin 4, and the rotating drive is provided with a second tooth portion meshing with the first tooth portion. The fixed seat ring is fixedly installed on the support platform 303.

[0053] In this embodiment, a second tooth portion matching the first tooth portion is provided on the gear at the driving end of the bottom of the rotary driver, and the first tooth portion is meshed with the second tooth portion. The gear is driven to rotate by the rotation of the driving end of the rotary driver. Since the fixed seat ring is fixedly connected to the support platform 303, the first tooth portion meshing with the second tooth portion on the gear drives the rotary seat ring to rotate. At this time, the cabin 4 drives the impeller 5 to rotate together with the rotary seat ring, thereby realizing the turning and yaw of the impeller 5 in the horizontal xy plane.

[0054] In the present invention, when the passive yaw of the mooring assembly 2 cannot ensure that the impeller 5 is facing the incoming wind direction, the yaw bearing 6 drives the nacelle 4 to rotate on the supporting platform 303, and the nacelle 4 drives the impeller 5 to deflect a certain angle, so that the impeller 5 can accurately face the wind and improve the power generation efficiency of the unit.

[0055] In one embodiment, Figure 1As shown, the second support member 302 includes a second support rod 3021 and a third support rod 3022. One end of the second support rod 3021 is connected to the support platform 303, and the other end is connected to the floating foundation 1. One end of the third support rod 3022 is connected to the support platform 303, and the other end is connected to the floating foundation 1. The second support rod 3021, the third support rod 3022 and the floating foundation 1 form a triangular frame structure.

[0056] Specifically, in this embodiment, the second support rod 3021, the third support rod 3022 and the floating foundation 1 form a triangular frame structure, and the first support member 301 forms a frame structure that is approximately a triangular pyramid. Since the triangle is not easily deformed when subjected to force, the triangular pyramid-shaped support component has a higher stability as a whole, thereby providing stable support for the cabin 4 and the impeller 5.

[0057] In this embodiment, the first support member 301, the second support rod 3021 and the third support rod 3022 are not specifically limited. For example, in this embodiment, the first support member 301, the second support rod 3021 and the third support rod 3022 are made of steel pipes. Using steel pipes to make the support frame can reduce the amount of steel used and reduce production costs.

[0058] In the present invention, the second support rod 3021, the third support rod 3022 and the floating foundation 1 form a triangular frame structure, which can make the support assembly 3 have a stable support and reduce the overall weight of the floating offshore wind power generation device.

[0059] In one embodiment, Figure 1 As shown, the floating foundation 1 includes buoys 101 and connecting rods 102 . The buoys 101 are suitable for floating on the sea. One end of the mooring assembly 2 is connected to the buoys 101 , and the connecting rods 102 connect adjacent buoys 101 .

[0060] Specifically, the present embodiment adopts a frame structure in which a plurality of buoys 101 and connecting rods 102 are connected, which can not only ensure that the floating offshore wind power generation device floats on the sea, but also reduce the amount of steel used in the overall device.

[0061] The present invention adopts a frame structure formed by connecting the buoys 101 with the connecting rods 102, which can reduce the overall weight of the floating offshore wind power generation device.

[0062] In one embodiment, Figure 1 As shown, a ballast tank 103 is provided at the bottom of the buoy 101 .

[0063] Specifically, in this embodiment, a ballast tank 103 is provided at the bottom of each buoy 101 , and the cross-sectional dimension of the ballast tank 103 is slightly larger than the cross-sectional dimension of the buoy 101 .

[0064] The present invention provides a ballast tank 103 at the bottom of the buoy 101, which can adjust the draft and metacentric height of the buoy 101 to ensure the stability of the floating offshore wind power generation device at sea.

[0065] In one embodiment, Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, there are three buoys 101 , and a triangular prism structure is formed between the connecting rod 102 and the buoys 101 .

[0066] Specifically, in this embodiment, there are three buoys 101, wherein the sides of adjacent buoys 101 are connected to each other through connecting rods 102, and the sides of ballast tanks 103 are also connected through connecting rods 102, thereby forming a triangular prism frame structure. Since the triangular prism has good symmetry and balance in spatial layout, it has strong stability and load-bearing capacity, thereby ensuring the overall safety and stability of the floating offshore wind power generation device.

[0067] In one embodiment, Figure 1 As shown, the mooring assembly 2 includes an anchor 201 and a mooring rope 202 . The anchor 201 is suitable for being arranged on the seabed. One end of the mooring rope 202 is connected to the anchor 201 , and the other end is connected to the floating foundation 1 .

[0068] Specifically, in this embodiment, the anchor 201 is fixed to the seabed, one end of the mooring line 202 is connected to the anchor 201 , and the other end is connected to the bottom of one of the ballast tanks 103 .

[0069] The present invention adopts a single-point mooring method of a mooring rope 202 to achieve passive yaw of the floating offshore wind power generation device. When the direction of wind and waves is inconsistent with the direction of the impeller 5, the floating offshore wind power generation device will rotate around the anchor 201 to achieve overall passive yaw of the floating offshore wind power generation device.

[0070] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A floating offshore wind power generation device, characterized in that: include: A floating foundation (1), wherein the floating foundation (1) is suitable for floating on the sea; A mooring component (2), one end of which is fixed to the seabed, and the other end of which is connected to the floating foundation (1); A support assembly (3), wherein the support assembly (3) is arranged on top of the floating foundation (1); A cabin (4), the bottom of the cabin (4) being movably connected to the support assembly (3); An impeller (5), the impeller (5) being rotatably arranged on a side of the cabin (4), and a side of the impeller (5) away from the cabin (4) being movably connected to the support assembly (3).

2. The floating offshore wind power generation device according to claim 1, characterized in that: A rotation groove (501) is provided at one end of the impeller (5) away from the nacelle (4), and the support assembly (3) is movably mounted in the rotation groove (501).

3. The floating offshore wind power generation device according to claim 2, characterized in that: Also includes: A rotating shaft bearing (502), the rotating shaft bearing (502) is rotatably connected to the impeller (5), and the rotating groove (501) is arranged on the rotating shaft bearing (502).

4. The floating offshore wind power generation device according to claim 2 or 3, characterized in that: The support assembly (3) comprises: A first support member (301), one end of the first support member (301) is fixedly connected to the floating foundation (1), and the other end is provided with a connecting portion (3011), and the connecting portion (3011) is movably installed in the rotating groove (501); A second support member (302), one end of the second support member (302) is fixedly connected to the floating foundation (1), and the other end is rotatably connected to the bottom of the cabin (4).

5. The floating offshore wind power generation device according to claim 4, characterized in that: The second support member (302) is provided with a support platform (303) on the top, and further comprises: A yaw bearing (6), wherein the yaw bearing (6) is movably arranged between the nacelle (4) and the supporting platform (303).

6. The floating offshore wind power generation device according to claim 5, characterized in that: The second support member (302) comprises: A second support rod (3021), one end of the second support rod (3021) is connected to the support platform (303), and the other end is connected to the floating foundation (1); A third support rod (3022), one end of the third support rod (3022) is connected to the support platform (303), and the other end is connected to the floating foundation (1), and the second support rod (3021), the third support rod (3022) and the floating foundation (1) form a triangular frame structure.

7. The floating offshore wind power generation device according to claim 1, characterized in that: The floating foundation (1) comprises: Buoys (101), a plurality of buoys (101) are suitable for floating on the sea, and one end of the mooring assembly (2) is connected to the buoys (101); Connecting rods (102), a plurality of connecting rods (102) connect adjacent buoys (101).

8. The floating offshore wind power generation device according to claim 7, characterized in that: A ballast tank (103) is provided at the bottom of the buoy (101).

9. The floating offshore wind power generation device according to claim 7 or 8, characterized in that: There are three buoys (101), and a triangular prism structure is formed between the connecting rod (102) and the buoys (101).

10. The floating offshore wind power generation device according to claim 1, characterized in that: The mooring assembly (2) comprises: An anchor (201), the anchor (201) being suitable for being arranged on the seabed; A mooring rope (202), one end of which is connected to the anchor (201), and the other end of which is connected to the floating foundation (1).

Images