Tension leg type floating wind turbine foundation and floating wind turbine

Abstract

The present invention relates to a tension leg type floating wind turbine foundation and a floating wind turbine. The tension leg type floating wind turbine foundation comprises a main floating structure, a plurality of truss beam structures and a mooring mechanism connected to the free ends of each truss beam structure, the mooring mechanism is used to connect with the seabed foundation, a plurality of mounting surfaces and a plurality of resistance-enhancing surfaces are alternately distributed on the outer peripheral surface of the main floating structure, each truss beam structure is mounted on each mounting surface one by one, and each resistance-enhancing surface is a concave curved surface; a counterweight compartment and an adjustment compartment are arranged in the main floating structure, the counterweight compartment is filled with counterweight material, and the adjustment compartment is adjustable and filled with a regulating liquid for controlling the draft of the main floating structure; a damping plate protruding from each resistance-enhancing surface is also installed on the main floating structure. By adopting the tension leg type floating wind turbine foundation and the floating wind turbine of the present invention, the attached water mass and the hydrodynamic damping are increased, the self-stability of the main floating structure is enhanced, and the high-frequency vibration of the main floating structure is suppressed.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to a tension leg type floating wind turbine foundation and a floating wind turbine. Background Art

[0002] In recent years, with the growing global demand for clean and renewable energy, wind energy has become one of the most commercialized renewable clean energy technologies and is showing a booming trend. Wind power generation has also gradually moved from land to sea and from offshore to offshore. However, due to technical and economic issues, the use of fixed offshore wind turbines is limited to waters within 50m of water depth. In order to obtain better quality wind energy and expand space resources for wind energy development, floating wind turbine technology has received widespread attention in recent years.

[0003] At present, the tension leg type buoy is one of the main foundation forms of floating wind turbines. Traditional tension leg type buoys mainly serve the field of oil and gas extraction. The horizontal force and yaw moment borne by the upper structure of the buoy are not obvious. However, for floating wind turbines, due to the tall structure of the wind turbine, under the action of the large thrust, overturning moment and rotational moment of the rotating wind wheel caused by the wind load, there is obvious horizontal plane movement, including longitudinal movement, transverse movement and yaw movement. In addition, the existing tension leg type buoy is also prone to high-frequency vibration and flutter of the tension leg, which in turn causes fatigue use of the buoy and the tension leg and reduces the service life. In addition, the existing tension leg type buoy also has problems such as insufficient damping against horizontal plane movement and poor self-stability, which seriously affects the performance of the tension leg type floating wind turbine. In view of the above situation, designing a new tension leg floating wind turbine foundation and floating wind turbine has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a tension leg type floating wind turbine foundation, which is used to solve the technical problem that the structural design of the floating wind turbine in the prior art is unreasonable and affects the performance of the floating wind turbine. The purpose of the present invention is also to provide a floating wind turbine using the tension leg type floating wind turbine foundation.

[0005] In order to achieve the above object, the present invention provides a tension leg floating wind turbine foundation, which adopts the following technical solution:

[0006] A tension-leg floating wind turbine foundation comprises a main floating structure, a plurality of truss beam structures and a mooring mechanism connected to the free ends of the truss beam structures, wherein the mooring mechanism is used to connect to a seabed foundation, and a plurality of mounting surfaces and a plurality of drag-increasing surfaces are alternately distributed on the outer peripheral surface of the main floating structure, and each truss beam structure is mounted on each mounting surface one by one, and each drag-increasing surface is a concave curved surface; a counterweight compartment and an adjustment compartment are arranged in the main floating structure, the counterweight compartment is filled with counterweight material, and the adjustment compartment is adjustably filled with an adjustment liquid for controlling the draft depth of the main floating structure; a damping plate protruding from each drag-increasing surface is also installed on the main floating structure.

[0007] Furthermore, the mooring mechanism comprises a tie rod structure and a rope chain structure, the tie rod structure is vertically arranged to the truss beam structure, and the angle formed by the rope chain structure and the truss beam structure is an obtuse angle.

[0008] Furthermore, the rope chain structure includes a rope chain and an anchor box arranged at the free end of the truss beam structure, the rope chain is used to connect the truss beam structure with the seabed foundation, and a chain winding device for retracting and releasing the rope chain is installed in the anchor box.

[0009] Furthermore, the tie rod structure includes a tension leg, and both ends of the tension leg are respectively connected to the truss beam structure and the seabed foundation by means of ball joints.

[0010] Furthermore, a reinforcing member is provided in the main floating structure, and the reinforcing member includes a reinforcing plate and reinforcing ribs.

[0011] Furthermore, there are a plurality of reinforcing plates, each reinforcing plate is vertically cross-arranged and divides the inner cavity of the main floating structure into a plurality of sub-cavities, and the reinforcing ribs are fixed on the reinforcing plates.

[0012] Furthermore, the counterweight compartment is located at the bottom of the main floating structure, and the regulating compartment is located above the counterweight compartment.

[0013] Furthermore, the truss beam structure is conical, the end of the truss beam structure with a larger size is fixedly connected to the mounting surface, and the end with a smaller size constitutes the free end and extends outward.

[0014] Furthermore, it also includes a transition floating structure, which is arranged on the top of the main floating structure and is used to install wind power equipment.

[0015] The present invention also provides a floating wind turbine, which adopts the following technical solution:

[0016] A floating wind turbine includes a wind power device and a tension leg type floating wind turbine foundation installed below the wind power device. The tension leg type floating wind turbine foundation includes a main floating structure, a plurality of truss beam structures and a mooring mechanism connected to the free ends of each truss beam structure, the mooring mechanism is used to connect with a seabed foundation, a plurality of mounting surfaces and a plurality of drag-increasing surfaces are alternately distributed on the outer peripheral surface of the main floating structure, each truss beam structure is mounted on each mounting surface one by one, and each drag-increasing surface is a concave curved surface; a counterweight compartment and an adjustment compartment are arranged in the main floating structure, the counterweight compartment is filled with counterweight material, and the adjustment compartment is adjustably filled with an adjustment liquid for controlling the draft depth of the main floating structure; a damping plate protruding from each drag-increasing surface is also installed on the main floating structure.

[0017] Furthermore, the mooring mechanism comprises a tie rod structure and a rope chain structure, the tie rod structure is vertically arranged to the truss beam structure, and the angle formed by the rope chain structure and the truss beam structure is an obtuse angle.

[0018] Furthermore, the rope chain structure includes a rope chain and an anchor box arranged at the free end of the truss beam structure, the rope chain is used to connect the truss beam structure with the seabed foundation, and a chain winding device for retracting and releasing the rope chain is installed in the anchor box.

[0019] Furthermore, the tie rod structure includes a tension leg, and both ends of the tension leg are respectively connected to the truss beam structure and the seabed foundation by means of ball joints.

[0020] Furthermore, a reinforcing member is provided in the main floating structure, and the reinforcing member includes a reinforcing plate and reinforcing ribs.

[0021] Furthermore, there are a plurality of reinforcing plates, each reinforcing plate is vertically cross-arranged and divides the inner cavity of the main floating structure into a plurality of sub-cavities, and the reinforcing ribs are fixed on the reinforcing plates.

[0022] Furthermore, the counterweight compartment is located at the bottom of the main floating structure, and the regulating compartment is located above the counterweight compartment.

[0023] Furthermore, the truss beam structure is conical, the end of the truss beam structure with a larger size is fixedly connected to the mounting surface, and the end with a smaller size constitutes the free end and extends outward.

[0024] Furthermore, it also includes a transition floating structure, which is arranged on the top of the main floating structure and is used to install wind power equipment.

[0025] Compared with the prior art, the tension leg type floating wind turbine foundation and the floating wind turbine of the embodiment of the present invention have the following beneficial effects: by adopting the tension leg type floating wind turbine foundation and the floating wind turbine of the present invention, since the resistance increasing surface is arranged on the outer peripheral side of the main floating structure, the resistance increasing surface can increase the contact area with water, and increase the attached water mass and hydrodynamic damping, so that when the main floating structure moves horizontally, the seawater will exert a force opposite to the direction of movement on the main floating structure, thereby playing a role in slowing down the horizontal movement. In addition, the main floating structure of the present invention is provided with a counterweight compartment and an adjustment compartment, and the counterweight material filled in the counterweight compartment can adjust the center of gravity position, so that the center of gravity of the main floating structure is lower than the buoyancy center, thereby enhancing the self-stability of the main floating structure and avoiding the problem that the main floating structure is easy to overturn after the mooring structure breaks. By filling different amounts of adjustment liquid into the adjustment compartment, the draft of the main floating structure can be adjusted, so that the main floating structure can meet the requirements of the immersion depth under different working conditions. Since the damping plate of the present invention protrudes from each resistance-increasing surface, when the main floating structure floats up and down, the damping plate and the seawater can form a mutual stop, thereby playing a role in suppressing the up and down floating of the main floating structure, thereby suppressing the high-frequency vibration of the main floating structure and avoiding fatigue use. The truss beam structure of the present invention not only increases the action arm of the mooring mechanism and increases the restoring moment, but also has the characteristics of light structure, reduces the overall steel consumption, and reduces the cost.

[0026] Furthermore, by setting the pull rod structure and the rope chain structure, the pull rod can limit the vertical movement, while the rope chain structure can limit the horizontal movement, further ensuring the stability of the structure. The shortcomings of the traditional tension leg type floating wind turbine, such as poor self-stability, easy overturning, and insufficient horizontal movement constraints, are overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a floating wind turbine according to an embodiment of the present invention;

[0028] Figure 2 1 is a schematic diagram of the overall structure of a tension leg type floating wind turbine foundation of a floating wind turbine according to an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 A partial enlarged view of

[0030] Figure 4 It is a schematic diagram of the free end structure of the truss beam structure of the floating wind turbine according to an embodiment of the present invention.

[0031] In the figure, 1-wind power equipment, 2-wind turbine foundation, 201-main floating structure, 202-truss beam structure, 203-pull rod structure, 204-rope chain structure, 205-round pedestal, 206-supporting cylinder, 207-output cable, 208-resistance-increasing surface, 209-installation surface, 210-damping plate, 211-anchor box. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] like Figures 1 to 4 As shown, a floating wind turbine according to a preferred embodiment of the present invention. The floating wind turbine includes a wind power device 1 and a tension leg floating wind turbine foundation (hereinafter referred to as the wind turbine foundation 2) installed below the wind power device 1. The tension leg floating wind turbine foundation includes a main floating structure 201, a plurality of truss beam structures 202 and a mooring mechanism connected to the free ends of each truss beam structure 202, wherein the mooring mechanism is used to connect to the seabed foundation. A plurality of mounting surfaces 209 and a plurality of resistance-enhancing surfaces 208 are alternately distributed on the outer peripheral surface of the main floating structure 201, and each truss beam structure 202 is mounted on each mounting surface 209 in a one-to-one correspondence, and each resistance-enhancing surface 208 is a concave curved surface; a counterweight compartment and an adjustment compartment are arranged in the main floating structure 201, the counterweight compartment is filled with counterweight material, and the adjustment compartment is adjustably filled with an adjustment liquid for controlling the draft depth of the main floating structure 201; a damping plate 210 protruding from each resistance-enhancing surface 208 is also installed on the main floating structure 201.

[0034] Specifically, in this embodiment, the wind power equipment 1 includes a tower, a wind turbine rotor and a nacelle, wherein the nacelle is installed at the top of the tower, and the nacelle can rotate in a plane around the tower, and the wind turbine rotor is installed on the nacelle. In this embodiment, the wind turbine rotor includes blades and a hub, and the wind power equipment 1 can generate electricity by rotating the blades. In this embodiment, the wind power equipment 1 is also connected to an output cable 207, which is inserted into the main floating structure 201 and passes out from the bottom of the main floating structure 201. The electric energy generated by the wind power equipment 1 can be transmitted through the output cable 207. Since the wind power equipment 1 is a prior art, the specific structure and working principle of the wind power equipment 1 will not be described in detail in this embodiment.

[0035] In this embodiment, the wind turbine equipment 1 is installed on the wind turbine foundation 2, and the wind turbine foundation 2 includes a main floating structure 201, a transition floating structure, a truss beam structure 202 and a mooring mechanism. In this embodiment, there are three truss beam structures 202, and the three truss beam structures 202 are arranged at equal intervals along the circumferential direction of the main floating structure 201. One end of each truss beam structure 202 is fixedly connected to the main floating structure 201, and the other end is cantilevered outward, and one end of each truss beam structure 202 cantilevered constitutes a free end. In this embodiment, the mooring mechanism is arranged at the free end of each truss beam structure 202, and there are also three corresponding mooring mechanisms.

[0036] In this embodiment, the main floating structure 201 is a columnar structure, and the horizontal cross-section of the main floating structure 201 is Y-shaped. The outer peripheral surface of the main floating structure 201 is provided with a resistance-increasing surface 208 and a mounting surface 209. There are three resistance-increasing surfaces 208 and mounting surfaces 209, and each resistance-increasing surface 208 and mounting surface 209 is alternately distributed in the circumferential direction. Specifically, in this embodiment, the three mounting surfaces 209 are all planes, and the three resistance-increasing surfaces 208 are all concave curved surfaces, and each resistance-increasing surface 208 is concave from the left and right sides to the middle. In order to enhance the damping effect, the area of ​​the resistance-increasing surface 208 in this embodiment is larger than the area of ​​the mounting surface 209. In this embodiment, the resistance-increasing surface 208 can increase the attached water mass and hydrodynamic damping of the main floating structure 201. When the main floating structure 201 moves horizontally, the corresponding two resistance-increasing surfaces 208 will form a resistance effect with the water body, thereby playing a role in slowing down the horizontal movement of the main floating structure 201.

[0037] In this embodiment, the interior of the main floating structure 201 is hollow. In order to enhance the structural strength of the main floating structure 201, a reinforcing member is provided in the main floating structure 201 in this embodiment. The reinforcing member includes a reinforcing plate and reinforcing ribs. In this embodiment, there are multiple reinforcing plates, each of which is arranged vertically and crosswise. Specifically, the reinforcing plates can be divided into vertical reinforcing plates and horizontal reinforcing plates according to the arrangement orientation, wherein the horizontal reinforcing plates are parallel to the upper and lower surfaces of the main floating structure 201, and the vertical reinforcing plates are perpendicular to the upper and lower surfaces of the main floating structure 201. These reinforcing plates divide the internal hollow of the main floating structure 201 into multiple sub-cavities. In order to further enhance the structural strength of the plate, reinforcing ribs are welded and fixed on each reinforcing plate in this embodiment.

[0038] In this embodiment, a counterweight compartment and an adjustment compartment are provided inside the main floating structure 201, wherein the counterweight compartment is located at the bottom of the main floating structure 201, and the adjustment compartment is located above the counterweight compartment. Both the counterweight compartment and the adjustment compartment can be regarded as a collection of multiple sub-cavities mentioned above. In this embodiment, the counterweight compartment is filled with counterweight materials, which mainly play the role of increasing the ballast weight. The counterweight materials can be selected from concrete, mineral sand, sand and gravel, etc. The filling of the counterweight material can play the role of lowering the center of gravity of the main floating structure 201, and make the center of gravity of the main floating structure 201 lower than the center of buoyancy, so that the main floating structure 201 has better self-stabilizing characteristics, thereby overcoming the problem that the traditional tension leg floating body has poor self-stabilization and is easy to capsize after the mooring mechanism breaks.

[0039] In this embodiment, the regulating chamber is filled with regulating liquid, which is specifically seawater, and in other embodiments, it can also be fresh water, etc. The immersion depth (draft depth) of the main floating structure 201 can be adjusted by filling different amounts of regulating liquid into the regulating chamber, so that the main floating structure 201 can meet the requirements of different immersion depths under different working conditions.

[0040] In order to reduce the vertical vibration frequency, in this embodiment, a damping plate 210 is also installed at the bottom of the main floating structure 201. The damping plate 210 is a hexagonal flat plate. The shape of the damping plate 210 is adapted to the bottom surface of the main floating structure 201. The damping plate 210 has three short edges and three long edges, and the three short edges and the three long edges are alternately distributed along the circumferential direction. The three short edges are flush with the three mounting surfaces 209, respectively, and the three long edges protrude from the three resistance-increasing surfaces 208. In this way, when the main floating structure 201 floats up and down, the damping plate 210 protruding from the resistance-increasing surface 208 will form a stop with the seawater, thereby playing a role in suppressing the up and down floating of the main floating structure 201 and reducing the up and down vibration frequency.

[0041] In this embodiment, the three truss beam structures 202 are all fixed at the top position of the corresponding mounting surface 209. In this embodiment, each truss beam structure 202 is conical, specifically a four-sided pyramid, and the larger end is fixedly connected to the mounting surface 209, and the smaller end constitutes the free end and extends outward. In this embodiment, the truss beam structure 202 includes four long rods and a number of short rods. The four long rods respectively constitute the four edges of the four-sided pyramid, and each short rod is fixed between any two adjacent long rods. In this embodiment, the short rods located on the same side of each truss beam structure 202 are arranged in a V-shaped tail connection. It should be noted that in this embodiment, the two long rods located above each truss beam structure 202 are in the same plane as the top surface of the main floating structure 201, and the two long rods below each truss beam structure 202 are arranged to extend downward at an angle.

[0042] In this embodiment, three mooring mechanisms are respectively fixedly connected to the free ends of the corresponding truss beam structures 202. Specifically, in this embodiment, the mooring mechanism includes a tie rod structure 203 and a rope chain structure 204. The tie rod structure 203 and the truss beam structure 202 are vertically arranged, and the rope chain structure 204 and the truss beam structure 202 form an obtuse angle, wherein the tie rod structure 203 is located within the obtuse angle formed by the truss beam structure 202 and the rope chain structure 204. In this embodiment, the rope chain structure 204 includes a rope chain and an anchor box 211 arranged at the free end of the truss beam structure 202. The rope chain is used to connect the truss beam structure 202 with the seabed foundation, and a chain winding device for retracting and releasing the rope chain is installed in the anchor box 211. Specifically, in this embodiment, the rope chain is a rope such as a polyester fiber cable, and a retaining ring anchor chain can also be used in other embodiments. In this embodiment, the anchor box 211 is a rectangular parallelepiped, and an outlet hole for the rope chain to pass through is provided on the anchor box 211. In this embodiment, a rope collecting device is installed in the anchor box 211, and the rope collecting device is specifically a winch. The extension length of the rope chain can be adjusted by rotating the winch.

[0043] In this embodiment, the tie rod structure 203 includes a tension leg, which is a steel pipe. In this embodiment, the tie rod structure 203 includes two tension legs arranged in parallel. In this embodiment, each tension leg is arranged vertically, and the upper and lower ends of the tension leg are respectively connected to the anchor box 211 and the seabed foundation by ball hinge connection. Specifically, in this embodiment, a spherical shell is arranged on the anchor box 211 and the seabed foundation, and a sphere embedded in the spherical shell is arranged on the upper and lower ends of the tension leg. The movement of the wind turbine foundation 2 in the up and down direction is restricted by the ball hinge connection, while each truss beam structure 202 and the tension leg can rotate freely.

[0044] It should be noted that the seabed foundation in this embodiment is an anchoring structure such as a gravity foundation, a negative pressure cylinder structure or a pile foundation that can withstand horizontal and vertical tension. The seabed foundation is fixed on the seabed. In this embodiment, the spherical shell at the bottom of the tension leg and the bottom end of the rope chain are fixedly connected to the seabed foundation by anchoring.

[0045] In this embodiment, a transitional floating structure is also provided on the top of the main floating structure 201. In this embodiment, the transitional floating structure includes a truncated pedestal seat 205 and a supporting cylinder 206. The truncated pedestal seat 205 is truncated, and the larger end (bottom end) of the truncated pedestal seat 205 is connected and fixed to the main floating structure 201, and the supporting cylinder 206 is connected and fixed to the other end (top end) of the truncated pedestal seat 205. In this embodiment, the bottom edge of the truncated pedestal seat 205 is tangent to the top edge of the three resistance-increasing surfaces 208 of the main floating structure 201, and the cross-sectional size of the supporting cylinder 206 is equal to the top surface of the truncated pedestal seat 205. In this embodiment, the tower of the wind power equipment 1 is connected and fixed to the supporting cylinder 206, and the connection and fixing method is flange bolt connection.

[0046] The working process of the present invention is as follows: firstly, the floating wind turbine is installed in the relevant sea area, and the draft of the floating wind turbine is adjusted by filling different amounts of regulating liquid into the regulating cabin. During use, the sea breeze will drive the wind power device 1 to rotate and generate electricity, and the generated electricity will be transmitted via the output cable 207.

[0047] In addition, during use, the pull rod structure 203 will play a role in suppressing the floating wind turbine from floating up and down, and the rope chain structure 204 will play a role in limiting the horizontal movement of the floating wind turbine. When pushed by wind, the corresponding resistance-increasing surface 208 will increase the attached water mass and hydrodynamic damping of the main floating structure, thereby playing a role in suppressing horizontal movement. When the floating wind turbine floats up and down, the damping plate 210 will form a mutual stop with the sea water, thereby playing a role in suppressing violent vibration.

[0048] An embodiment of the tension leg type floating wind turbine foundation of the present invention: The specific structure of the tension leg type floating wind turbine foundation is the same as the specific structure of the wind turbine foundation 2 in the above-mentioned floating wind turbine, and will not be repeated here.

[0049] In summary, the embodiments of the present invention provide a tension leg type floating wind turbine foundation and a floating wind turbine. By adopting the tension leg type floating wind turbine foundation and the floating wind turbine of the present invention, a drag increasing surface 208 is provided on the outer peripheral side of the main floating structure 201. The drag increasing surface 208 can increase the contact area with water, and increase the attached water mass and hydrodynamic damping. In this way, when the main floating structure 201 moves horizontally, the sea water will exert a force on the main floating structure 201 in the opposite direction of the movement, thereby slowing down the horizontal movement.

[0050] In addition, the main floating structure 201 of the present invention is provided with a counterweight chamber and an adjustment chamber, and the counterweight material filled in the counterweight chamber can adjust the center of gravity position, so that the center of gravity of the main floating structure 201 is lower than the center of buoyancy, which enhances the self-stability of the main floating structure 201 and avoids the problem that the main floating structure 201 is prone to capsizing after the mooring structure breaks. By filling different amounts of adjustment liquid into the adjustment chamber, the draft of the main floating structure 201 can be adjusted, so that the main floating body can meet the requirements of the immersion depth under different working conditions.

[0051] Since the damping plate 210 of the present invention protrudes from each resistance-enhancing surface 208, when the main floating structure 201 floats up and down, the damping plate 210 and the seawater can form a mutual stop, thereby playing a role in suppressing the up and down floating of the main floating structure 201, thereby suppressing the high-frequency vibration of the main floating structure 201 and avoiding fatigue use. The truss beam structure 202 of the present invention not only increases the action arm of the mooring mechanism and increases the restoring moment, but also has the characteristics of a light structure, reduces the overall steel consumption, and reduces the cost.

[0052] By setting the tie rod structure 203 and the rope chain structure 204, the tie rod can limit the vertical movement, while the rope chain structure 204 can limit the horizontal movement, further ensuring the stability of the structure. The shortcomings of the traditional tension leg type floating wind turbine, such as poor self-stability, easy overturning, and poor horizontal movement constraint, are overcome.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A tension leg floating wind turbine foundation, characterized in that: The invention comprises a main floating structure (201), a plurality of truss beam structures (202), and a mooring mechanism connected to the free end of each truss beam structure (202), wherein the mooring mechanism is used to connect to a seabed foundation, a plurality of mounting surfaces (209) and a plurality of resistance-enhancing surfaces (208) are alternately distributed on the outer peripheral surface of the main floating structure (201), each truss beam structure (202) is mounted on each mounting surface (209) in a one-to-one correspondence, and each resistance-enhancing surface (208) is an inwardly concave curved surface; a counterweight chamber and an adjustment chamber are arranged in the main floating structure (201), the counterweight chamber is filled with a counterweight material, and the adjustment chamber is adjustably filled with an adjustment liquid for controlling the draft of the main floating structure (201); and a damping plate (210) protruding from each resistance-enhancing surface (208) is also mounted on the main floating structure (201); The mooring mechanism comprises a pull rod structure (203) and a rope chain structure (204); the pull rod structure (203) and the truss beam structure (202) are arranged vertically; and the angle formed by the rope chain structure (204) and the truss beam structure (202) is an obtuse angle; A reinforcing component is arranged in the main floating structure (201), and the reinforcing component comprises a reinforcing plate and reinforcing ribs.

2. The tension leg floating wind turbine foundation according to claim 1, characterized in that: The rope chain structure (204) comprises a rope chain and an anchor box (211) arranged at the free end of the truss beam structure (202); the rope chain is used to connect the truss beam structure (202) to a seabed foundation; a chain reel device for retracting and releasing the rope chain is installed in the anchor box (211).

3. The tension leg floating wind turbine foundation according to claim 1, characterized in that: The tie rod structure (203) comprises a tension leg, and both ends of the tension leg are respectively connected to the truss beam structure (202) and the seabed foundation by means of a ball joint.

4. The tension leg floating wind turbine foundation according to claim 1, characterized in that: There are a plurality of reinforcing plates, each reinforcing plate is arranged vertically and crosswise and divides the inner cavity of the main floating structure (201) into a plurality of sub-cavities, and the reinforcing ribs are fixed on the reinforcing plates.

5. The tension leg floating wind turbine foundation according to claim 1, characterized in that: The counterweight compartment is located at the bottom of the main floating structure (201), and the regulating compartment is located above the counterweight compartment.

6. The tension leg floating wind turbine foundation according to claim 1, characterized in that: The truss beam structure (202) is conical, the larger end of the truss beam structure (202) is fixedly connected to the mounting surface (209), and the smaller end constitutes the free end and extends outward.

7. The tension leg floating wind turbine foundation according to claim 1, characterized in that: It also comprises a transition floating structure, which is arranged on top of the main floating structure (201) and is used to install the wind power equipment (1).

8. A floating wind turbine, comprising a wind power device (1) and a tension leg type floating wind turbine foundation installed below the wind power device (1), characterized in that: The tension leg type floating wind turbine foundation (2) adopts the tension leg type floating wind turbine foundation (2) as described in any one of claims 1 to 7 above.

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