Novel wind power foundation platform

Abstract

The utility model discloses a novel wind power foundation platform, and relates to the technical field of offshore wind power generation equipment, the novel wind power foundation platform comprises a wind turbine generator, a wind power platform, a mooring system and an anchoring foundation, the wind power platform comprises a horizontal rod system, an inclined rod system, a wind turbine generator tower cylinder bearing platform, a balancing weight, a connecting piece and an adjusting mechanism, the inclined rod system extends upwards from three angular points of the horizontal rod system to the wind turbine generator tower cylinder bearing platform, and the wind turbine generator tower cylinder bearing platform is located over the horizontal rod system. The balancing weight is located under a wind turbine generator tower cylinder bearing platform and connected to the three angular points of the horizontal rod system and the wind turbine generator tower cylinder bearing platform through the connecting pieces, and the adjusting mechanism is used for adjusting the length of the connecting pieces. The wind power platform is simple in structure, the gravity center of the floating platform can be adjusted, and transportation and installation are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of offshore wind power generation equipment technology, specifically relating to a new type of wind power foundation platform. Background Technology

[0002] Wind power, as a clean and renewable energy source, is an important way to solve the global energy crisis. With technological advancements, wind power is no longer limited to land but is gradually expanding into the ocean, especially deep-sea areas. According to a World Bank analysis of 115 coastal countries, 71% of the world's exploitable offshore wind power capacity is located in deeper waters. Based on the stability principles of wind turbine foundations, floating wind turbines can be broadly classified into four types: semi-submersible, barge, tension leg (TLP), and spare. Tension leg floating wind turbines, as core equipment for deep-sea wind energy resource development, have received widespread attention from countries around the world.

[0003] The foundation design principle of tension leg floating wind turbines originates from deep-sea tension leg oil production platforms. These platforms generate buoyancy far exceeding gravity, and the excess buoyancy balances with the pretension of the tension legs, maintaining the stability of the main structure. This design allows the wind turbines to float stably in deep-sea environments and effectively resist the effects of natural forces such as wind and waves. The stability principle of tension leg foundations is mooring stability, provided by a tensioned anchor chain system (tension ligaments).

[0004] Compared to traditional stationary wind turbines, tension leg floating wind turbines offer numerous advantages. Firstly, their floating design allows for installation and operation in deeper waters, expanding the application scope of wind power. Secondly, as offshore wind power expands into deeper waters, the manufacturing and installation costs of floating wind turbines become more competitive. Furthermore, tension leg floating wind turbines exhibit excellent mobility, enabling stable operation in complex marine environments.

[0005] Compared with other types of floating wind turbines, tension leg floating wind turbines have many advantages, such as being environmentally friendly, compact in structure, lightweight, having small amplitude of motion, occupying less sea area, applicable to a wide range of water depths, and being convenient for operation, maintenance, and decommissioning. They can effectively save the cost of floating wind power development.

[0006] However, existing tension leg floating wind turbine platforms have complex structures, numerous pipe nodes, and large overall platform volume. The platform is prone to fatigue risks at the pipe nodes, and the large volume means a large amount of steel consumption, resulting in relatively high manufacturing costs. Chinese patents CN202310480770.X, CN202310480768.2, and CN202310480773.3 disclose a triangular, quadrilateral, and polygonal tension leg floating wind turbine foundation platform, respectively. The top views of the three tension leg floating wind turbine foundation platforms are roughly triangular, quadrilateral, and polygonal, respectively. Corner pontoons are set at the horizontal corner points of the triangles, quadrilaterals, and polygons, and a central column is set at the center. The corner pontoons and the central column are connected by numerous rods, resulting in a large number of connection nodes in the floating wind turbine foundation platform and a large overall steel consumption of the platform.

[0007] Most existing tension leg floating wind turbine platforms have a high center of gravity, poor stability, and are sensitive to environmental parameters. Their transportation and installation require numerous vessels and specialized equipment. For example, the tension leg wind turbine platform described in Chinese application number 202311846808.7 uses a structure with a central buoy and surrounding buoys. The surrounding buoys are evenly distributed around the central buoy, resembling a cantilever beam structure. During transportation, it cannot rely on the platform's own stability for towing and must be secured to a semi-submersible barge, resulting in low transportation and installation efficiency. Chinese applications numbered 202310225775.8 and 201410138023.9 ​​require additional auxiliary devices to be installed on the floating wind turbine platform during transportation and installation to provide sufficient buoyancy and stability. This increases the complexity of transportation and installation, potentially leading to longer construction periods, more required vessels and equipment, and further increased costs.

[0008] Existing tension leg floating wind turbine platforms with counterweights have complex structures, and the counterweight installation process is not continuous. The lowering of the counterweights can significantly impact the upper wind turbine and foundation platform, and the installation procedure is cumbersome. For example, with the TetraSpar floating wind turbine equipment, the assembly of the floating foundation and counterweights is completed underwater, increasing the difficulty of assembly. During the installation phase, the lowering of the counterweights can also have a significant impact on the upper wind turbine and foundation platform.

[0009] Therefore, the present invention aims to provide a wind power platform with a simple structure, an adjustable floating platform center of gravity, and convenient transportation and installation. Utility Model Content

[0010] The purpose of this invention is to provide a novel wind power foundation platform to solve the aforementioned problems in the existing technology.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] A novel wind power foundation platform includes a wind turbine, a wind power platform, a mooring system, and an anchoring foundation. The wind power platform includes a horizontal mast system, an inclined mast system, a wind turbine tower support, a counterweight, connectors, and an adjustment mechanism. The horizontal mast system forms a triangle. The inclined mast system extends upward from the three corner points of the horizontal mast system to the wind turbine tower support, with the wind turbine tower support located directly above the horizontal mast system. The counterweight is located directly below the wind turbine tower support and is connected to the three corner points of the horizontal mast system and the wind turbine tower support via connectors. The adjustment mechanism is used to adjust the length of the connectors.

[0013] Optionally, the horizontal bar system has a hollow internal structure and is equipped with compartment plates.

[0014] Optionally, the inclined rod system has a hollow internal structure and is equipped with compartment plates.

[0015] Optionally, auxiliary components are provided around the wind turbine tower support.

[0016] Optionally, the counterweight is spherical.

[0017] Optionally, the counterweight block has a hollow structure with compartment plates inside.

[0018] Optionally, the connector includes four anchor chains, three of which are connected to the counterweight at one end and to the three corner points of the horizontal bar system at the other end, and the remaining anchor chain is connected to the counterweight at one end and passes through the bottom of the wind turbine tower support and connects to the internal adjustment mechanism at the other end.

[0019] Optionally, the wind turbine includes a tower, a nacelle, a hub, and blades. The bottom of the tower is connected to the top of the wind turbine tower platform, the top of the tower is connected to the nacelle, the nacelle is connected to the hub, and the blades are connected to the hub.

[0020] Optionally, the mooring system consists of three sets of tension tendons, with one end of each set of tension tendons connected to the corner of the horizontal bar system and the other end connected to the anchoring foundation, and each set of tension tendons containing at least one tension tendon.

[0021] Beneficial effects: The novel wind power foundation platform of this utility model has the following advantages:

[0022] (1) The main body of the wind power platform includes horizontal poles and inclined poles. The horizontal poles form a triangle, and the inclined poles extend upward from the three corners of the horizontal poles to the wind turbine tower support. The main body has a tetrahedral structure with few connection nodes, small steel consumption, and a simple overall structure.

[0023] (2) The counterweight is connected to the three corner points of the horizontal bar system and the wind turbine tower support through the connectors. The adjustment mechanism is used to adjust the length of the connectors, move and adjust the position of the counterweight, and adjust the center of gravity of the wind power platform.

[0024] (3) It can be mass-produced in prefabrication yards, quickly modularized in docks or wharves, and transported by wet towing due to the platform’s good stability, making transportation and installation convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a novel wind power foundation platform in the embodiment;

[0026] Figure 2 This is a partial structural schematic diagram of a novel wind power foundation platform in an embodiment.

[0027] In the diagram: 1. Wind turbine; 11. Tower; 12. Nacelle; 13. Hub; 14. Blade; 2. Wind power platform; 21. Horizontal mast system; 22. Inclined mast system; 23. Wind turbine tower support; 24. Counterweight; 25. Connector; 3. Mooring system; 4. Anchoring foundation; 5. Auxiliary components. Detailed Implementation

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0031] Example

[0032] like Figures 1-2 As shown, this embodiment provides a novel wind power foundation platform, including a wind turbine 1, a wind power platform 2, a mooring system 3, and an anchoring foundation 4. The wind power platform 2 includes a horizontal strut system 21, an inclined strut system 22, a wind turbine tower support 23, a counterweight 24, a connector 25, and an adjustment mechanism. The horizontal strut system 21 forms a triangle. The inclined strut system 22 extends upward from the three corner points of the horizontal strut system 21 to the wind turbine tower support 23, which is located directly above the horizontal strut system 21. The counterweight 24 is located directly below the wind turbine tower support 23 and is connected to the three corner points of the horizontal strut system 21 and the wind turbine tower support 23 via the connector 25. The adjustment mechanism is used to adjust the length of the connector 25.

[0033] The horizontal strut system 21 consists of three horizontal struts, and the inclined strut system 22 consists of three inclined struts. The three horizontal struts form a triangle, and the three inclined struts extend upward from the three corner points of the horizontal strut system 21 to the wind turbine tower support 23. The three horizontal struts and the three inclined struts constitute the main body of the wind power platform 2. The main body of the platform is roughly tetrahedral in space; it has few connection nodes, uses little steel, and has a simple overall structure.

[0034] In this embodiment, preferably, the horizontal rod system 21 has a hollow internal structure and is equipped with compartment plates; the inclined rod system 22 has a hollow internal structure and is equipped with compartment plates; both the horizontal rod system 21 and the inclined rod system 22 are cylindrical, mainly providing buoyancy for the wind power platform 2 and the wind turbine 1, and are also basic components of the wind power platform 2, ensuring load transmission; of course, the horizontal rod system 21 and the inclined rod system 22 can also be replaced with square, ellipsoidal, or combinations of different shapes without affecting their functional realization.

[0035] The wind turbine tower support 23 is located directly above the main body of the platform, and the counterweight 24 is located directly below the main body of the platform. It is connected to the three corner points of the horizontal bar system 21 and the wind turbine tower support 23 through the connector 25, thereby fixing the counterweight 24. The length of the connector 25 is adjusted by the adjustment mechanism. Due to the setting of the adjustment mechanism, the position of the counterweight 24 can be adjusted as needed, thereby adjusting the center of gravity of the wind power platform 2.

[0036] The adjustable center of gravity ensures that the platform can be wet-towed for transportation and installation, and maintains good stability under extreme environmental loads after installation.

[0037] In this embodiment, it is preferred that the counterweight 24 is spherical. Of course, the counterweight 24 can also be cylindrical, polygonal, or a combination of different shapes. The main purpose is to ensure that the counterweight 24 has a certain mass so as to meet the requirement of adjusting the center of gravity of the wind power platform 2.

[0038] The counterweight 24 can be a solid structure or a hollow structure. Preferably, the counterweight 24 is a hollow structure with compartments inside. During assembly and towing, air can be filled inside the counterweight 24 to provide buoyancy. During installation, seawater can be injected into the counterweight 24 to increase its mass.

[0039] In this embodiment, the connector 25 includes four anchor chains. Three anchor chains are connected at one end to the counterweight 24 and at the other end to the three corner points of the horizontal rod system 21, respectively. The remaining anchor chain is connected at one end to the counterweight 24 and at the other end passes through the bottom of the wind turbine tower support 23 and connects to the internal adjustment mechanism. Specifically, the bottom of the wind turbine tower support 23 allows the connector 25 to pass through. The adjustment mechanism is located inside the wind turbine tower support 23. The anchor chains pass through the wind turbine tower support 23 and connect to the adjustment mechanism. The adjustment mechanism is mainly a winch or anchor hoist, which adjusts the length of the anchor chains. Preferably, the anchor chain passing through the wind turbine tower support 23 is adjustable, while the other three anchor chains are not adjustable. Alternatively, the adjustment mechanism can be set at other suitable locations to adjust the length of the other three anchor chains, thereby increasing the adjustment range of the counterweight 24.

[0040] Among them, the continuous adjustment of the anchor chain reduces the requirements for the environmental conditions of the proposed installation area, and the entire installation process is highly installable and convenient.

[0041] Anchor chains can also be replaced with synthetic fibers, steel cables, telescopic steel pipes, and combinations thereof, the main purpose of which is to fix and adjust the counterweight 24.

[0042] At the top of the wind power platform 2 is the wind turbine 1, which includes a tower 11, a nacelle 12, a hub 13, and blades 14. The bottom of the tower 11 is connected to the wind turbine tower support 23, the top of the tower 11 is connected to the nacelle 12, the nacelle 12 is connected to the hub 13, and the hub 13 is connected to the blades 14. Specifically, the tower 11 is divided into three sections, including a bottom tower 11, a middle tower 11, and an upper tower 11, which are connected to the wind turbine tower support 23 in sequence. The upper tower 11 is connected to the nacelle 12, the nacelle 12 is connected to the hub 13, and the hub 13 is connected to three blades 14.

[0043] The tower section 11 can be one or more sections, and the materials can be steel, concrete, steel-concrete composite materials, etc.

[0044] Furthermore, auxiliary components 5 are provided around the wind turbine tower support 23, mainly to provide space for installation and maintenance personnel to climb and work.

[0045] Below the wind power platform 2 are the mooring system 3, the anchoring foundation 4, and some accessories at the connection points. The mooring system 3 consists of three sets of tension tendons. One end of each set of tension tendons is connected to the corner of the horizontal bar system 21, and the other end is connected to the anchoring foundation 4. Each set of tension tendons contains at least one tension tendon, which connects the wind power platform 2 and the anchoring foundation 4. The tension tendons provide buoyancy for the entire wind power platform 2 and the wind turbine 1. The anchoring foundation 4 fixes the wind power platform 2 and the wind turbine 1 in a fixed position through the tension tendons. In this embodiment, preferably, each set of tension tendons contains two tension tendons, which are connected to the seabed anchoring foundation 4 respectively, for a total of six tension tendons.

[0046] The anchoring foundation 4 can be a suction bucket foundation, pile anchor, gravity anchor, plate anchor, dynamic anchor, etc. In this embodiment, a suction bucket foundation is preferred.

[0047] This utility model discloses a novel wind power foundation platform. The dimensions of the horizontal mast system 21 and the inclined mast system 22 can be determined according to the capacity of the wind turbine generator 1, and the wind power platform 2 can be scaled up or down proportionally. The wind turbine generator 1 can be a horizontal axis wind turbine generator 1 or a vertical axis wind turbine generator 1. The horizontal axis wind turbine generator 1 has higher efficiency at higher wind speeds, but its wind energy utilization rate is generally above 40%, and its efficiency is lower when the wind speed is below the rated wind speed. The vertical axis wind turbine generator 1 has no requirements on wind direction, low starting wind speed, and strong wind resistance, making it suitable for low wind speed areas. Its wind energy utilization rate is relatively low, but it performs better under low wind speed conditions. Users can freely choose according to their needs.

[0048] The installation method of this utility model for a novel wind power foundation platform mainly includes eight steps: prefabrication of components on-site, integrated onshore assembly, pre-installation of anchor foundation 4, wet towing and positioning of the whole machine, installation of mooring system 3, adjustment of the position of counterweight 24, submersion of the platform, and completion of installation. After installation, most of the wind power platform 2 is submerged below the water surface.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A new type of wind power foundation platform, characterized in that, The wind turbine (1), the wind power platform (2), the mooring system (3) and the anchoring foundation (4), the wind power platform (2) includes horizontal rod system (21), inclined rod system (22), wind turbine tower platform (23), counterweight (24), connecting piece (25) and adjusting mechanism, the horizontal rod system (21) is enclosed into triangle, the inclined rod system (22) extends upward from the three corner points of horizontal rod system (21) to wind turbine tower platform (23), the wind turbine tower platform (23) is located directly above horizontal rod system (21);The counterweight (24) is located directly below the wind turbine tower platform (23), and is connected to the three corner points of horizontal rod system (21) and wind turbine tower platform (23) by connecting piece (25), and the adjusting mechanism is used for adjusting the length of connecting piece (25).

2. A new type of wind power foundation platform according to claim 1, characterized in that, The horizontal rod system (21) is a hollow structure, and is provided with a partition plate.

3. A novel wind power foundation platform according to claim 1, characterized in that, The inclined rod system (22) is a hollow structure, and is provided with a partition plate.

4. The novel wind power foundation platform according to claim 1, characterized in that, The wind turbine tower platform (23) is provided with an auxiliary component (5) on the side.

5. The novel wind power foundation platform according to claim 1, characterized in that, The counterweight (24) is spherical.

6. A new type of wind power platform according to claim 1, characterized in that, The counterweight (24) is a hollow structure, and is provided with a partition plate.

7. A new type of wind power platform according to claim 1, characterized in that, The connecting piece (25) includes four anchor chains, three of which are connected to the counterweight (24) at one end and to the three corner points of the horizontal rod system (21) at the other end, and the remaining one is connected to the counterweight (24) at one end and to the adjusting mechanism inside the wind turbine tower platform (23) at the other end.

8. A new type of wind power platform according to claim 1, characterized in that, The wind turbine (1) includes a tower (11), a nacelle (12), a hub (13) and a blade (14), the tower (11) is connected above the wind turbine tower platform (23), the tower (11) top is connected to the nacelle (12), the nacelle (12) is connected to the hub (13), and the hub (13) is connected to the blade (14).

9. A new type of wind power platform according to claim 1, characterized in that, The mooring system (3) is composed of three groups of tension tendons, one end of each group of tension tendons is connected to the corner point of the horizontal rod system (21), and the other end is connected to the anchoring foundation (4), each group of tension tendons contains at least one tension tendon.

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