Deepwater ultra-large-capacity wind power structure with stabilizing assembly

Abstract

The invention discloses a deepwater ultra-large-capacity wind power structure with a stabilizing assembly, and relates to the technical field of offshore wind power, the deepwater ultra-large-capacity wind power structure comprises a fan tower, the fan tower is connected with the stabilizing assembly, an anchoring assembly is arranged below the stabilizing assembly, and the anchoring assembly and the stabilizing assembly are connected through a connecting anchor cable; the stabilizing assembly comprises an inner side ring body, a connecting truss and an outer side ring body, and the connecting truss is arranged between the inner side ring body and the outer side ring body; the anchoring assembly comprises a connecting ring and a plurality of inserting pile bodies. According to the deepwater ultra-large-capacity wind power structure with the stable assembly, the stable structure is formed through the inner side ring body, the connecting trusses and the outer side ring body, and wave impact is resisted; the connecting ring is matched with the central column body and the radial rib plates to uniformly transmit the anchor cable tension and enhance the anchoring stability; the twelve connecting anchor cables are arranged in an inclined mode and matched with the spiral spring damper to buffer tension fluctuation, the tension can be adjusted through the tensioning assembly, stress balance is guaranteed, and inclination is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power, and in particular to a deep-water ultra-large capacity wind power structure with stable components. Background Art

[0002] As the global energy transition accelerates, the development and utilization of wind energy as a clean, renewable energy source has become a key focus. Limited by resource saturation in shallow waters and increasing environmental protection requirements, wind power development is gradually expanding into deeper waters. At the same time, to improve power generation efficiency and reduce the cost per kilowatt-hour, single-unit capacity continues to expand, with ultra-large-capacity wind turbines (e.g., 15MW and above) becoming the mainstream.

[0003] However, deepwater environments face more complex marine conditions, including strong wind and wave loads, varying seabed geological conditions, and long-period low-frequency vibrations. Existing deepwater wind turbine structures, when adapted for ultra-large turbine capacity, experience a significant increase in upper loads and a higher center of gravity, leading to a significant decrease in overall stability. In actual operation, excessive structural shaking and increased resonance responses are common, and in extreme cases, even capsize accidents, severely hindering the large-scale application of ultra-large-capacity deepwater wind turbine technology. Summary of the Invention

[0004] The purpose of the present invention is to provide a deep-water ultra-large capacity wind power structure with stable components to solve the problems raised by the above background technology.

[0005] To achieve the above objectives, the present invention provides a deep-water ultra-large capacity wind power structure with a stabilizing assembly, comprising a wind turbine tower, wherein the wind turbine tower is connected to the stabilizing assembly, an anchor assembly is provided below the stabilizing assembly, the anchor assembly and the stabilizing assembly are connected by a connecting anchor cable, and the anchor assembly is connected to the wind turbine tower via a supporting pile;

[0006] The stabilizing assembly includes an inner ring, a connecting truss and an outer ring, wherein the connecting truss is arranged between the inner ring and the outer ring;

[0007] The anchoring assembly comprises a connecting ring and a plurality of insert piles, wherein the insert piles are axially distributed and connected to the connecting ring and inserted downward into the seabed.

[0008] Preferably, the inner ring body is connected to the wind turbine tower through a plurality of support rods, and the plurality of support rods are distributed axially along the inner ring body. One end of each support rod is hinged to the inner ring body through a ball joint, and the other end of each support rod is fixedly connected to the wind turbine tower.

[0009] Preferably, the connecting truss comprises two inner ring bodies arranged one above the other and two outer ring bodies arranged one above the other, the outer ring bodies and the inner ring bodies are coaxially arranged and the outer ring bodies are arranged around the outer periphery of the inner ring bodies, the inner ring bodies and the outer ring bodies are connected by a plurality of radial rods and a plurality of figure-eight rods, and the figure-eight rods and the radial rods are arranged alternately;

[0010] The two inner ring bodies and the two outer ring bodies are fixedly connected by a plurality of vertical rods.

[0011] Preferably, a plurality of arc-shaped baffles are provided on the outside of the outer ring body, each of the arc-shaped baffles includes an upper end face and a lower end face, the curvature radius of the lower end face is greater than the curvature radius of the upper end face, and elastic sealant is filled between the arc-shaped baffle and the outer ring body.

[0012] Preferably, the height of the inner ring body is greater than the height of the outer ring body, and the height difference between the inner ring body and the outer ring body is set to 0.2 to 0.25 of the height of the outer ring body.

[0013] Preferably, a central column is provided at the center of the connecting ring, the central column is vertically inserted downward into the seabed, and the central column and the connecting ring are connected by a plurality of radial ribs distributed along the circumference;

[0014] The top end of the central column is fixedly connected to the bottom end of the support pile, and the top end of the support pile is fixedly connected to the bottom end of the wind turbine tower.

[0015] Preferably, the outer diameter of the connecting ring is set to 0.85 to 0.9 of the outer diameter of the outer ring body.

[0016] Preferably, the insert pile body is configured as a cylindrical structure, a spiral portion is provided at the lower portion thereof, and a conical insert portion is provided at the bottom end thereof.

[0017] Preferably, the upper end of the connecting anchor cable is connected to the lower surface of the outer ring body through a connecting tensioning assembly, the lower end of the connecting anchor cable is connected to the upper surface of the connecting ring, and the connecting anchor cable is arranged to be inclined outward, and the inclination angle is set to 3° to 5°.

[0018] Preferably, the connecting tensioning assembly includes a connecting box arranged on the lower surface of the outer ring body, the top of the connecting box is fixedly connected to an ear plate, a tensioning frame is provided below the ear plate, the outer side of the tensioning frame is connected to a plurality of hydraulic cylinders, the inner side of the tensioning frame is provided with a tensioning wheel, an annular groove is provided at the middle position of the tensioning wheel, and the connecting anchor cable extends along the annular groove to the top and is fixedly connected to the ear plate.

[0019] Therefore, the present invention adopts the above-mentioned deep-water ultra-large capacity wind power structure with stable components, which has the following beneficial effects:

[0020] (1) The stabilizing components of the device form a stable structure through the inner ring, connecting trusses and outer ring. The grid system of the connecting trusses enhances the anti-deformation ability and resists wave impact.

[0021] (2) This device adds a spiral part to the inserted pile body, thereby increasing the bite area with the seabed and improving the pull-out resistance; the connecting ring cooperates with the central column and radial ribs to evenly transmit the anchor cable tension and enhance the anchoring stability.

[0022] (3) This device arranges 12 connecting anchor cables at an angle, and uses a coil spring damper to buffer tension fluctuations. The tensioning assembly can adjust the tension to ensure force balance and avoid tilting.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an embodiment of a deep-water ultra-large capacity wind power structure with stable components according to the present invention;

[0025] Figure 2 This is a schematic top view of a stabilizing component of a deep-water ultra-large capacity wind power structure having a stabilizing component according to the present invention;

[0026] Figure 3 A top view of an anchoring assembly of a deep-water ultra-large capacity wind power structure with a stabilizing assembly according to the present invention;

[0027] Figure 4 This is a structural schematic diagram of a tensioning connection assembly of a deep-water ultra-large capacity wind power structure with a stabilizing assembly according to the present invention;

[0028] Figure 5 This is a schematic structural diagram of an inserted pile body of a deep-water ultra-large capacity wind power structure with a stabilizing component according to the present invention;

[0029] Figure 6 This is a structural schematic diagram of a curved baffle of a deep-water ultra-large capacity wind power structure with a stabilizing component according to the present invention;

[0030] Figure numerals: 1. wind turbine tower; 2. connecting anchor cable; 21. coil spring damper; 3. inner ring body; 31. support rod; 32. ball joint; 4. connecting truss; 41. inner ring body; 42. outer ring body; 43. radial rod; 44. figure eight rod; 5. outer ring body; 51. arc baffle; 511. upper end face; 512. lower end face; 52. elastic sealant; 6. connecting ring; 61. central column; 62. radial rib; 63. connecting plate; 7. insert pile body; 71. spiral part; 72. insert part; 8. connecting tensioning assembly; 81. connecting box; 82. ear plate; 83. tensioning frame; 84. hydraulic cylinder; 85. tensioning wheel; 86. annular groove; 9. support pile. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0032] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] Example

[0034] See also Figures 1-6 The present invention provides an offshore wind power device with a wind turbine tower 1, comprising a wind turbine tower 1, which is connected to a stabilizing assembly. An anchoring assembly is provided below the stabilizing assembly. The anchoring assembly and the stabilizing assembly are connected by an anchor cable 2. The anchoring assembly is connected to the wind turbine tower 1 through a supporting pile 9. The bottom end of the supporting pile 9 is fixedly connected to the central column 61, and the top end of the supporting pile 9 is fixedly connected to the wind turbine tower 1. The upper wind turbine tower 1 and the lower anchoring assembly are connected through the supporting pile 9 to form an anchoring whole, thereby improving the anchoring force.

[0035] The stabilization assembly includes an inner ring 3, a connecting truss 4, and an outer ring 5. The connecting truss 4 is disposed between the inner ring 3 and the outer ring 5. The inner ring 3 is connected to the wind turbine tower 1 via four support rods 31. The four support rods 31 are distributed axially along the inner ring 3. One end of each support rod 31 is hinged to the inner ring 3 via a ball joint 32. The other end of each support rod 31 is fixedly connected to the wind turbine tower 1. The ball joint 32 allows for ±15° of swing. The use of the ball joint 32 can compensate for the relative displacement between the wind tower 1 and the stabilization assembly caused by waves, prevent the support rods 31 from being subjected to additional bending moments, reduce stress at the base of the support rods 31, and improve service life.

[0036] The connecting truss 4 comprises two inner rings 41 arranged one above the other and two outer rings 42 arranged one above the other. The outer rings 42 are coaxially arranged with the inner rings 41 and are positioned around the outer rings 41. The inner and outer rings 41 and 42 are connected by multiple radial rods 43 and multiple crossbars 44, which are arranged alternately with the radial rods 43. The inner rings 41 and the outer rings 42 are fixedly connected by multiple vertical rods. The vertical rods, crossbars 44, and radial rods 43 are all made of steel. The radial rods 43 transmit circumferential forces, while the crossbars 44 form a triangular structure for stability and increased shear stiffness. The vertical rods enhance vertical integrity, creating a grid-like force-bearing system that increases the strength of the connecting truss 4. Compared to solid structures, the connecting truss 4 reduces deadweight and improves deformation resistance, helping to withstand wave impacts.

[0037] A plurality of arc-shaped baffles 51 are provided on the outside of the outer ring body 5. Each arc-shaped baffle 51 includes an upper end face 511 and a lower end face 512. The curvature radius of the lower end face 512 is greater than the curvature radius of the upper end face 511. An elastic sealant 52 is filled between the arc-shaped baffle 51 and the outer ring body 5. The gap is filled by the self-deformation of the elastic sealant 52 to prevent seawater erosion. The arc-shaped baffle 51 and the outer ring body 5 are connected by using a connection technology that meets the requirements of embedded parts, high-strength bolts and welding reinforcement. First, embedded parts are preset on the outer ring body 5. Each arc-shaped baffle 51 corresponds to six embedded parts. A horizontal connecting flange is installed at the bottom of the arc-shaped baffle 51. A waist-shaped hole is opened on the horizontal connecting flange at the position corresponding to the embedded part. High-strength bolts are passed through the waist-shaped hole and the bolt holes on the embedded part, and fixed with double nuts. After installation, the corner welds are welded at the edges of the horizontal connecting flange and the embedded part, and the entire connection part is sprayed with a cold-sprayed zinc coating, and then covered with a polyurethane topcoat. The welding part is wrapped with glass fiber cloth to prevent rust.

[0038] The height of the inner ring body 3 is greater than that of the outer ring body 5, and the height difference between the inner ring body 3 and the outer ring body 5 is set to 0.2 to 0.25 of the height of the outer ring body 5. The inner ring body 3 is directly connected to the wind turbine tower 1 via a support rod 31. Designing the inner ring body 3 to be higher in height can shift the center of gravity of the wind turbine tower 1 inward and downward, forming a stepped layout with the outer ring body 5, which is "high inside and low outside." This center of gravity distribution can offset the lateral torque generated by wave impact, and combined with the inclined anchor cable tension of the anchor assembly, it can enhance the anti-rollover capability and improve the stability of the entire device.

[0039] The anchoring assembly includes a connecting ring 6 and a number of inserted pile bodies 7. The inserted pile bodies 7 are axially distributed and connected to the connecting ring 6 and inserted downward into the seabed. A central column 61 is provided at the center of the connecting ring 6. The central column 61 is inserted vertically downward into the seabed, and the central column 61 and the connecting ring 6 are connected by a plurality of radial ribs 62 distributed along the circumference. The central column 61 bears the vertical load, and the radial ribs 62 disperse the circumferential force. The connecting ring 6 evenly transfers the anchor cable tension to the inserted pile body 7. The outer diameter of the connecting ring 6 is set to 0.85 to 0.9 of the outer diameter of the outer ring body 5. The inserted pile body 7 is set to a cylindrical structure, a spiral portion 71 is provided at the lower part, and a conical insert portion 72 is provided at the bottom end. The spiral portion 71 increases the bite area with the soil and improves the pull-out resistance, and the conical insert portion 72 reduces the resistance to entering the soil, and is suitable for a variety of seabeds.

[0040] Twelve connecting anchor cables 2 are provided. The upper end of each connecting anchor cable 2 is connected to the lower surface of the outer ring body 5 via a connecting tensioning assembly 8, and the lower end is connected to a connecting plate 63 on the upper surface of the connecting ring 6. The connecting anchor cables 2 are arranged outwardly at an angle of 3° to 5°. The connecting anchor cables 2 are also equipped with a coil spring damper 21. The angle of inclination reduces the pressure of the vertical component on the connecting ring 6, and in conjunction with the coil spring damper 21, it buffers tension fluctuations, thereby increasing the service life of the connecting anchor cables 2. The connecting tensioning assembly 8 includes a connecting box 81 disposed on the lower surface of the outer ring body 5. A lug plate 82 is fixedly connected to the top of the connecting box 81. A tensioning frame 83 is disposed below the lug plate 82. Multiple hydraulic cylinders 84 are connected to the outside of the tensioning frame 83. A tensioning pulley 85 is disposed inside the tensioning frame 83. An annular groove 86 is provided in the middle of the tensioning pulley 85. The connecting anchor cables 2 extend along the annular groove 86 to the top and are fixedly connected to the lug plate 82. A through hole is opened on the ear plate 82, and a pin is passed through the through hole. The end cable segment of the connecting anchor cable 2 is hingedly connected to the pin, and the other end of the connecting anchor cable 2 is also connected to the connecting plate 63 in the same way as the pin connection.

[0041] In addition to the above structure, the device is also provided with sensors, controllers and actuators. The sensors are inclinometers and pressure sensors. The pressure sensor is arranged inside the hydraulic cylinder 84. By detecting the oil chamber pressure of the hydraulic cylinder 84 and transmitting it to the controller, the controller calculates the tension of each connecting anchor cable 2 through an algorithm and then regulates it. The inclinometers are respectively installed on the top of the wind turbine tower 1, the inner ring body 3 and the outer ring body 5 to monitor the inclination angle of the overall structure in real time. The controller is used to receive data from the above sensors and output control instructions through the algorithm. The actuator adjusts the operating state of the device according to the instructions, such as changing the blade angle, adjusting the blade speed, adjusting the telescopic length of the hydraulic cylinder 84, etc. Sensors, controllers and actuators are all mature existing technologies in this technical field and will not be described in detail here.

[0042] Therefore, the present invention adopts the above-mentioned deep-water ultra-large capacity wind power structure with stable components, and forms a stable structure through the inner ring body, the connecting truss and the outer ring body. The grid system of the connecting truss improves the deformation resistance and resists the impact of waves; a spiral part is added to the inserted pile body to increase the bite area with the seabed and improve the pull-out resistance; the connecting ring cooperates with the central column and radial ribs to evenly transmit the anchor cable tension and enhance the anchoring stability; the 12 connecting anchor cables are arranged at an angle, and the coil spring damper is used to buffer the tension fluctuations. The tensioning assembly can adjust the tension to ensure force balance and avoid tilting.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A deepwater ultra-large capacity wind power structure with stable components, characterized by: The wind turbine tower is connected to a stabilizing assembly, an anchoring assembly is provided below the stabilizing assembly, the anchoring assembly and the stabilizing assembly are connected by an anchor cable, and the anchoring assembly is connected to the wind turbine tower by a supporting pile; The stabilizing assembly includes an inner ring, a connecting truss and an outer ring, wherein the connecting truss is arranged between the inner ring and the outer ring; The anchoring assembly comprises a connecting ring and a plurality of insert piles, wherein the insert piles are axially distributed and connected to the connecting ring and inserted downward into the seabed.

2. The deepwater ultra-large capacity wind power structure with stable components according to claim 1, characterized in that: The inner ring body is connected to the wind turbine tower through a plurality of support rods, and the plurality of support rods are distributed axially along the inner ring body. One end of each support rod is hinged to the inner ring body through a ball joint, and the other end of each support rod is fixedly connected to the wind turbine tower.

3. The deepwater ultra-large capacity wind power structure with stable components according to claim 2, characterized in that: The connecting truss comprises two inner ring bodies arranged one above the other and two outer ring bodies arranged one above the other, the outer ring bodies and the inner ring bodies being coaxially arranged and the outer ring bodies being arranged around the outer periphery of the inner ring bodies, the inner ring bodies and the outer ring bodies being connected by a plurality of radial rods and a plurality of figure-eight rods, the figure-eight rods and the radial rods being arranged alternately; The two inner ring bodies and the two outer ring bodies are fixedly connected by a plurality of vertical rods.

4. The deepwater ultra-large capacity wind power structure with stable components according to claim 3, characterized in that: A plurality of arc-shaped baffles are arranged on the outside of the outer ring body, each of the arc-shaped baffles includes an upper end face and a lower end face, the curvature radius of the lower end face is greater than the curvature radius of the upper end face, and elastic sealant is filled between the arc-shaped baffles and the outer ring body.

5. The deepwater ultra-large capacity wind power structure with stable components according to claim 4, characterized in that: The height of the inner ring body is greater than that of the outer ring body, and the height difference between the inner ring body and the outer ring body is set to 0.2 to 0.25 of the height of the outer ring body.

6. The deepwater ultra-large capacity wind power structure with stable components according to claim 5, characterized in that: A central column is provided at the center of the connecting ring, the central column is vertically inserted downward into the seabed, and the central column and the connecting ring are connected by a plurality of radial ribs distributed along the circumference; The top end of the central column is fixedly connected to the bottom end of the support pile, and the top end of the support pile is fixedly connected to the bottom end of the wind turbine tower.

7. The deepwater ultra-large capacity wind power structure with stable components according to claim 6, characterized in that: The outer diameter of the connecting ring is set to 0.85 to 0.9 of the outer diameter of the outer ring body.

8. The deepwater ultra-large capacity wind power structure with stable components according to claim 7, characterized in that: The insert pile body is arranged as a cylindrical structure, a spiral portion is arranged at the lower part thereof, and a conical insert portion is arranged at the bottom end thereof.

9. The deepwater ultra-large capacity wind power structure with stable components according to claim 8, characterized in that: The upper end of the connecting anchor cable is connected to the lower surface of the outer ring body through a connecting tensioning assembly, and the lower end of the connecting anchor cable is connected to the upper surface of the connecting ring. The connecting anchor cable is arranged to be inclined outward, and the inclination angle is set to 3° to 5°.

10. The deepwater ultra-large capacity wind power structure with stable components according to claim 9, characterized in that: The connecting tensioning assembly includes a connecting box arranged on the lower surface of the outer ring body, the top of the connecting box is fixedly connected to an ear plate, a tensioning frame is provided below the ear plate, the outer side of the tensioning frame is connected to a plurality of hydraulic cylinders, the inner side of the tensioning frame is provided with a tensioning wheel, an annular groove is provided at the middle position of the tensioning wheel, and the connecting anchor cable extends along the annular groove to the top and is fixedly connected to the ear plate.

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