Lightweight floating fan platform

Abstract

According to the light-weight floating type draught fan platform, the lower floating body assembly is composed of the three floating bodies which define the regular triangle, each floating body is of a hollow structure and is provided with the transverse bulkhead and the longitudinal bulkhead, the middle longitudinal bulkhead is provided with the through hole, the weight is reduced, the cost is reduced, and the motion response is improved. In addition, the floating body is uniformly stressed by the longitudinal bulkheads which are more than odd in number; the transverse bulkheads have the same outline as the side walls of the floating body and penetrate through the longitudinal bulkheads, so that the structural strength and safety are enhanced; the cross section of the floating body is runway-shaped and adapts to stormy waves; the heaving plate increases the connection strength; the through holes are various in shape, and stress distribution is optimized; uniform weight reduction is realized through the through holes with specific intervals; the structural layout is optimized through the reasonably-distributed transverse bulkheads; bulkheads at different parts of the floating body have different thicknesses, so that the weight is reduced; the specific connecting mode of the supporting rods improves the platform stability.

Description

Technical Field

[0001] The invention relates to the field of floating wind turbine platform technology, and in particular to a lightweight floating wind turbine platform. Background Technology

[0002] As an important means of producing clean energy, the wind power industry has been developing rapidly in recent years due to the increasingly urgent national demand for clean energy. Offshore wind power, as a major component of the wind power industry, has advantages over traditional onshore wind power, such as wider wind farms, richer wind energy resources, and greater development potential. However, due to the complex environmental conditions at sea, offshore wind power also faces drawbacks such as higher technical difficulties and higher construction costs, especially construction costs; building a wind power plant at sea is significantly more expensive than onshore. Therefore, it is necessary to explore methods to reduce the construction costs of offshore wind turbine platforms.

[0003] Floating wind turbine platforms play a crucial role in offshore wind power generation, supporting the wind turbine towers and ensuring the stability of the system. Traditional floating wind turbine platforms, designed to withstand the harsh marine environment and maintain structural strength, utilize alloy materials in all components, resulting in significant weight. Simultaneously, they must meet buoyancy requirements (needing more space within the floating components beneath the platform), leading to an even larger overall volume. This increased volume, in turn, inevitably increases the overall weight, creating a difficult balance and increasing design complexity and construction costs.

[0004] To reduce costs, we propose a lightweight floating wind turbine platform.

[0005] Application content Therefore, it is necessary to address the technical problems of traditional floating wind turbine platforms, such as large weight, high construction cost, and difficulty in balancing structural strength and buoyancy requirements, by providing a lightweight floating wind turbine platform. This would allow the offshore wind turbine platform to effectively reduce weight, lower construction costs, and improve power generation efficiency and reliability while ensuring structural strength and stability.

[0006] This invention provides a lightweight floating wind turbine platform, comprising: a lower floating body assembly, which includes three horizontally distributed floating bodies forming an equilateral triangle; three columns connected vertically at the vertices of the triangle of the lower floating body assembly; and struts horizontally connected between the side walls of two adjacent columns. The floating bodies are hollow structures, including multiple transverse bulkheads perpendicular to the outer wall of the floating bodies, and multiple longitudinal bulkheads parallel to the outer wall of the floating bodies. The longitudinal bulkhead located in the middle position has multiple through holes. This design, by creating through holes in the longitudinal bulkhead in the middle position of the floating body, effectively reduces the platform weight and construction costs while ensuring the overall strength and stability of the longitudinal bulkheads. It also improves the platform's motion response at sea and enhances the power generation efficiency and reliability of the wind turbine.

[0007] In other embodiments, the number of longitudinal bulkheads is odd, and the number of longitudinal bulkheads is greater than the number of transverse bulkheads. An odd number of longitudinal bulkheads provides a more rational support layout, making the stress on the float more even in all directions and reducing localized stress concentration. A greater number of longitudinal bulkheads than transverse bulkheads better meets the structural strength and stability requirements of the float. Longitudinal bulkheads mainly bear longitudinal external forces, requiring a larger number to provide sufficient support, while transverse bulkheads mainly bear lateral external forces, requiring a relatively smaller number to meet the requirements.

[0008] In other embodiments, the transverse bulkhead has the same sidewall profile as the float in the corresponding direction, and the transverse bulkhead penetrates the longitudinal bulkhead. The identical sidewall profile of the transverse bulkhead ensures a tight connection, improving watertightness and structural strength. The transverse bulkhead penetrating the longitudinal bulkhead divides the internal space of the float into multiple independent watertight compartments, enhancing the connection strength between the longitudinal bulkheads. This allows each watertight compartment to operate independently under stress, improving platform safety. Simultaneously, it makes force transmission between the longitudinal bulkheads more uniform, reducing local stress concentration and improving structural fatigue life.

[0009] In other embodiments, the cross-section of the float perpendicular to the outer wall has a racetrack-shaped structure. The racetrack-shaped structure combines the advantages of a circle and a rectangle. The smooth curve of a circle reduces water flow resistance to the float and improves the platform's motion performance, while the larger area of ​​a rectangle provides sufficient buoyancy and internal space, better adapting to the effects of wind and waves in a marine environment, reducing platform sway and tilt, improving wind turbine power generation efficiency and reliability, and facilitating float manufacturing and installation.

[0010] In other embodiments, two adjacent floats are connected by a heave plate, and the heave plate is circumferentially arc-shaped. The heave plate increases the connection strength and stability between the floats, suppresses the heave motion of the floats, reduces the amplitude of the heave motion, and ensures the normal operation of the wind turbine and power generation efficiency. The circumferential arc shape of the heave plate reduces the resistance of the water flow to the heave plate, improves working efficiency, and at the same time makes the stress distribution of the heave plate more uniform when under force, reduces local stress concentration, and improves structural strength and durability.

[0011] In other embodiments, the through-hole is a rectangular or racetrack-shaped structure, and when the through-hole is rectangular, a rounded transition connection is used at the corners of the rectangle. Rectangular through-holes are simple to manufacture and low in cost, but stress is prone to concentration at the corners. The rounded transition connection solves this problem, making the stress evenly and smoothly distributed along the edge of the hole, reducing local stress concentration, and improving the fatigue life of the structure. Racetrack-shaped through-holes combine the advantages of circles and rectangles, have a good weight reduction effect and avoid stress concentration. The smooth curve reduces the resistance of water flow to the longitudinal bulkhead and improves the platform's motion performance. The appropriate through-hole shape and size can be selected according to design requirements and the operating environment.

[0012] In other embodiments, except for the two through holes located in the middle position, the spacing d1 between the other two adjacent through holes is the same, and the spacing d2 between the two through holes located in the middle position satisfies d1 > d2. This design is based on structural mechanics and stress distribution considerations. The stress distribution around the two through holes located in the middle position is complex, and appropriately reducing the spacing improves the local structural strength. The spacing of the remaining through holes is the same and greater than the spacing of the middle through holes, achieving a more uniform weight reduction effect while ensuring the overall structural strength. This allows the longitudinal bulkhead to reduce weight while maintaining good stress distribution and structural stability, thereby improving the platform's reliability and durability.

[0013] In other embodiments, there are at least three transverse bulkheads, with at least one located at the midpoint of a longitudinal bulkhead, and the remaining transverse bulkheads mirror-distributed around the midpoint. At least three transverse bulkheads divide the internal space of the float into multiple independent watertight compartments, meeting the requirements for storing ballast water and ensuring watertightness. At least one transverse bulkhead located at the midpoint of a longitudinal bulkhead effectively supports the middle section of the longitudinal bulkhead, enhancing structural strength and stability. The remaining transverse bulkheads mirror-distributed around the midpoint ensure more even stress distribution in all directions, reducing localized stress concentration and improving the overall structural performance of the float. This optimizes the float's structural layout while ensuring watertightness, thereby improving platform stability and safety.

[0014] In other embodiments, the thickness h1 of the outer wall of the float is greater than the thickness h3 of the transverse bulkhead, which is greater than the thickness h2 of the longitudinal bulkhead. The outer wall of the float is in direct contact with seawater and bears the effects of seawater pressure, wave forces, and other external forces. To ensure the overall shape and stability of the float, its thickness h1 is relatively large. The transverse bulkhead divides the watertight compartments and bears lateral external forces; its thickness h2 meets the requirements for watertightness and structural strength and is relatively thinner than the outer wall of the float. The longitudinal bulkhead bears longitudinal external forces; its thickness h3 is appropriately reduced while ensuring structural strength to achieve weight reduction. This thickness design allows the float to meet structural strength and stability requirements while minimizing weight and reducing construction costs.

[0015] In other embodiments, the strut is connected to the end of the upright on the side wall away from the lower float assembly. The upright may be used to install auxiliary equipment or as support for other platform structures. Connecting it to the end of the upright on the side wall away from the lower float assembly provides the upright with a larger working space, facilitating equipment installation and maintenance. Simultaneously, it creates a stable structure between the upright and the upright, improving the overall stability and reliability of the platform. In practical applications, the specific use and design of the upright can be flexibly adjusted according to platform requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the invention.

[0017] Figure 2 for Figure 1 A sectional view of section AA in the middle.

[0018] Figure 3 for Figure 2 Sectional view of section BB.

[0019] in: 100. Lower float assembly; 110. Float; 111. Outer wall of float; 112. Longitudinal bulkhead; 1121. Through hole; 113. Transverse bulkhead; 120. Heave plate; 200. Column; 300. Support rod. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0026] like Figure 1 - Figure 3As shown, this embodiment discloses a lightweight floating wind turbine platform, including a lower floating body assembly 100, columns 200, and struts 300. The lower floating body assembly 100 is hollow inside and serves as the basic support structure for the entire floating wind turbine platform, providing overall buoyancy. In a marine environment, the floating wind turbine platform relies on buoyancy to float stably on the water surface to support the wind turbine tower and related equipment above. The hollow interior of the lower floating body assembly 100 effectively increases the platform's drainage volume. Simultaneously, to reduce overall weight, multiple through holes 1121 are provided on the longitudinal bulkhead 112 located in the middle of the floating body 110 of the lower floating body assembly 100. The longitudinal bulkhead 112 plays an important supporting and separating role in the structure of the floating body 110, but it bears relatively less load in the middle section. By creating the through holes 1121, this excess material can be removed, effectively reducing the platform's weight without affecting the overall structural strength and stability. This is significant for reducing construction costs, as lighter weight means less material can be used, and it also facilitates the transportation and installation of the platform. Furthermore, the reduced weight improves the platform's motion response at sea, enabling it to better adapt to the complex marine environment and enhance the power generation efficiency and reliability of the wind turbine.

[0027] In the structural design of floating wind turbines, the longitudinal bulkheads 112 are designed to enhance the structural strength and stability of the floats 110, enabling them to withstand external forces such as wind, waves, and currents at sea. However, an excessive number of longitudinal bulkheads 112 increases the platform's weight and construction costs. Extensive research and experimentation have shown that having at least three longitudinal bulkheads 112 (an odd number) on each lower float 110 provides a more reasonable support layout while ensuring structural strength. However, the weight of these longitudinal bulkheads 112 is not negligible; therefore, weight reduction design is an effective way to reduce the overall platform weight. Furthermore, the load-bearing portion of the longitudinal bulkhead 112 plates is primarily the edge portion connected to the float 110, while the middle portion bears less load. From a mechanical perspective, when the float 110 is subjected to external forces, the force transmission is initially concentrated on the edge portion of the longitudinal bulkheads 112 connected to the float 110. This part of the structure needs to withstand significant bending and shear stresses to ensure the overall shape and stability of the float 110. The middle section of longitudinal bulkhead 112, being relatively far from the point of force application, bears a relatively smaller load. Therefore, opening a hole in the middle section will not significantly affect the overall load-bearing capacity of longitudinal bulkhead 112, while simultaneously achieving weight reduction. Thus, opening a hole in the middle section of longitudinal bulkhead 112 can reduce overall weight while maintaining strength, achieving structural optimization. By opening a hole in the middle section of longitudinal bulkhead 112, the amount of material used can be reduced without compromising structural strength, thereby lowering the platform's weight. Furthermore, a well-designed opening can improve the stress distribution of the structure, making the stress more evenly distributed on longitudinal bulkhead 112, avoiding localized stress concentration, and improving the structure's fatigue life and reliability.

[0028] This embodiment also considers why holes are not drilled in the transverse bulkhead 113. This is because the transverse bulkhead 113, as a key structure dividing the watertight compartments, must ensure its watertightness. Drilling holes in the transverse bulkhead 113 would cause communication between the watertight compartments, making it impossible to effectively store and regulate ballast water, thus affecting the stability and safety of the platform. In the field of shipbuilding and marine engineering, the design and manufacture of watertight structures are subject to strict standards and specifications; any design that could compromise watertightness is not permitted. Furthermore, the transverse bulkhead 113 is relatively short; drilling holes in it would severely affect its ability to withstand external loads. The transverse bulkhead 113 in the float 110 structure mainly bears lateral external forces, such as lateral wave forces caused by wind and waves. Due to its short length, its load-bearing capacity is relatively limited. Drilling holes in the transverse bulkhead 113 would further weaken its structural strength and reduce its ability to withstand external loads. Under the complex environmental conditions at sea, this could lead to the failure of the transverse bulkhead 113, thereby affecting the integrity and stability of the entire float 110 structure. Therefore, in order to ensure the safe operation of the floating wind turbine platform, holes cannot be drilled in the transverse bulkhead 113.

[0029] Specifically, such as Figure 1 As shown, the lower floating body assembly 100 in this embodiment includes three horizontally distributed floating bodies 110 forming an equilateral triangle. The equilateral triangle has high stability and can uniformly withstand external forces in all directions. This arrangement allows the lower floating body assembly 100 to maintain a good balance when subjected to external forces such as wind, waves, and currents at sea, reducing platform sway and tilt, and improving the power generation efficiency and reliability of the wind turbine.

[0030] like Figure 1 As shown, three columns 200 are vertically connected at the vertices of the triangle formed by the lower floating body assembly 100. Connecting the three columns 200 vertically at the vertices of the triangle maximizes the spacing between the columns 200, thus providing more stable support for the wind turbine tower. Simultaneously, this layout also facilitates force transmission and dispersion. When the wind turbine is subjected to wind force, the force can be evenly transmitted to the lower floating body assembly 100 through the columns 200, reducing local stress concentration and improving the structural strength and durability of the platform.

[0031] In this embodiment, the strut 300 is horizontally connected between the side walls of two adjacent columns 200. The function of the strut 300 is to enhance the connection strength and stability between the columns 200, forming an integral structural frame. The horizontal connection between the side walls of two adjacent columns 200 effectively limits the relative displacement between the columns 200, preventing them from tilting or deforming when subjected to external forces at sea. Simultaneously, the strut 300 can also share some of the external forces, reducing the load on the columns 200 and improving the overall structural safety of the platform.

[0032] The float 110 has a hollow structure and is linearly distributed. It includes multiple transverse bulkheads 113 perpendicular to the outer wall 111 of the float, and multiple longitudinal bulkheads 112 parallel to the outer wall 111. The height of the longitudinal bulkheads 112 is the same as the vertical height of the corresponding connection position of the outer wall 111 of the float. Multiple through holes 1121 are provided on the longitudinal bulkheads 112 located in the middle position. The hollow structure of the float 110 is to provide buoyancy, while the linear distribution design allows the float 110 to have a better streamlined shape at sea, reducing water resistance and improving the platform's motion performance. The transverse bulkheads 113 and longitudinal bulkheads 112 are designed to enhance the structural strength and stability of the float 110. The transverse bulkheads 113, perpendicular to the outer wall 111 of the float, divide the float 110 into multiple watertight compartments; the longitudinal bulkheads 112, parallel to the outer wall 111 of the float, mainly serve to support and separate the internal space of the float 110. Creating multiple through holes 1121 on the longitudinal bulkhead 112 located in the middle is an effective way to reduce weight while ensuring the overall strength and stability of the longitudinal bulkhead 112.

[0033] In this embodiment, the number of longitudinal bulkheads 112 is odd, and the number of longitudinal bulkheads 112 is greater than the number of transverse bulkheads 113. In the structure of the float 110, the odd number of longitudinal bulkheads 112 can provide a more reasonable support layout, making the force on the float 110 more uniform in all directions and reducing local stress concentration. At the same time, the greater number of longitudinal bulkheads 112 than transverse bulkheads 113 is also to better meet the structural strength and stability requirements of the float 110. The longitudinal bulkheads 112 mainly bear longitudinal external forces, such as the bending deformation of the float 110 under wave action, so a larger number is needed to provide sufficient support; while the transverse bulkheads 113 mainly bear lateral external forces, and their relatively smaller number is sufficient to meet the requirements.

[0034] In this embodiment, the transverse bulkhead 113 has the same sidewall profile as the float 110 in the corresponding direction, and the transverse bulkhead 113 penetrates the longitudinal bulkhead 112. The identical sidewall profile of the transverse bulkhead 113 and the float 110 ensures a tight connection between the transverse bulkhead 113 and the sidewall of the float 110, improving watertightness and structural strength. The design of the transverse bulkhead 113 penetrating the longitudinal bulkhead 112 is to divide the internal space of the float 110 into multiple independent watertight compartments, while simultaneously enhancing the connection strength between the longitudinal bulkheads 112. This design allows each watertight compartment of the float 110 to operate independently when subjected to external forces, preventing water ingress into the entire float 110 due to the failure of one compartment, thus improving platform safety. Furthermore, the penetration of the transverse bulkhead 113 through the longitudinal bulkhead 112 also makes the force transmission between the longitudinal bulkheads 112 more uniform, reducing local stress concentration and improving the fatigue life of the structure.

[0035] In this embodiment, the cross-section of the float 110 perpendicular to the outer wall has a racetrack-shaped structure. This racetrack-shaped structure combines the advantages of a circle and a rectangle. It possesses the smooth curve of a circle, reducing water resistance and improving the platform's motion performance; and the larger area of ​​a rectangle, providing sufficient buoyancy and internal space. This structure better adapts to the effects of wind and waves in a marine environment, reducing platform sway and tilt, and improving the power generation efficiency and reliability of the wind turbine.

[0036] In this embodiment, two adjacent floats 110 are connected by a heave plate 120, which is circumferentially arc-shaped. The function of the heave plate 120 is to increase the connection strength and stability between the floats 110, while suppressing the vertical movement of the floats 110, i.e., heave motion. In a marine environment, the floats 110 are subject to wave action, resulting in heave motion. Excessive heave motion can affect the normal operation of the wind turbine and its power generation efficiency. By setting the heave plate 120 between two adjacent floats 110, the damping between the floats 110 can be increased, reducing the amplitude of heave motion. The circumferential arc-shaped design of the heave plate 120 can reduce the resistance of the water flow to the heave plate 120, improving its working efficiency. At the same time, the arc-shaped design also allows for a more uniform stress distribution when the heave plate 120 is subjected to external forces, reducing local stress concentration and improving the structural strength and durability of the heave plate 120.

[0037] In this embodiment, the through hole 1121 is a rectangular or racetrack-shaped structure. When the through hole 1121 is rectangular, a rounded transition is used at the corners of the rectangle. By using a rectangular or racetrack-shaped through hole 1121 with an arc, not only are the weight reduction requirements met, but this smooth transition also allows the stress to be distributed evenly and smoothly along the edge of the hole, avoiding stress concentration at the corners of the hole. This achieves the goal of meeting the weight reduction requirements without reducing the overall weighing efficiency.

[0038] In this embodiment, except for the two through holes 1121 located in the middle position, the spacing d1 between the other two adjacent through holes 1121 is the same, and the spacing d2 between the two through holes 1121 located in the middle position satisfies d1 > d2. The position of the two middle through holes 1121 is also the connection position of the transverse bulkhead 113. Due to the presence of the transverse bulkhead 113, the spacing can be reduced, that is, there will be more through holes 1121 in the space of the longitudinal bulkhead 112. At the same time, after the through holes 1121 are opened on the longitudinal bulkhead 112, the stress distribution around the through holes 1121 will change. Since the two through holes 1121 located in the middle position are far from the two ends of the longitudinal bulkhead 112, the stress distribution around them is relatively complex, and the spacing needs to be appropriately reduced to improve the local structural strength. The spacing d1 between the other two adjacent through holes 1121 is the same and greater than d2, which can achieve a more uniform weight reduction effect while ensuring the overall structural strength. This design allows the longitudinal bulkhead 112 to maintain good stress distribution and structural stability while reducing weight, thereby improving the platform's reliability and durability.

[0039] In this embodiment, there are at least three transverse bulkheads 113, with at least one transverse bulkhead 113 located at the midpoint of the longitudinal bulkhead 112. The remaining transverse bulkheads 113 are mirror-distributed along the midpoint. Having at least three transverse bulkheads 113 divides the internal space of the float 110 into multiple independent watertight compartments, meeting the requirements for storing ballast water and ensuring watertightness. Having at least one transverse bulkhead 113 located at the midpoint of the longitudinal bulkhead 112 provides effective support for the longitudinal bulkhead 112 in the middle, enhancing its structural strength and stability. The mirror-distribution of the remaining transverse bulkheads 113 along the midpoint allows for more uniform stress distribution on the float 110 in all directions, reducing local stress concentration and improving the overall structural performance of the float 110.

[0040] In this embodiment, the thickness h1 of the outer wall of the float 111 is greater than the thickness h3 of the transverse bulkhead 113, which is greater than the thickness h2 of the longitudinal bulkhead 112. The thickness design of the outer wall of the float 111, the transverse bulkhead 113, and the longitudinal bulkhead 112 is determined based on the loads and effects they bear. The outer wall of the float 111 is in direct contact with seawater and needs to withstand the pressure of seawater, wave forces, and other external forces, while also ensuring the overall shape and stability of the float 110. Therefore, its thickness h1 is relatively large. The transverse bulkhead 113 is mainly used to divide watertight compartments and withstand lateral external forces. Its thickness h2 needs to meet the requirements of watertightness and structural strength, but it can be slightly thinner than the outer wall of the float 111. The longitudinal bulkhead 112 mainly bears longitudinal external forces, such as the bending deformation of the float 110 under wave action. Its thickness h3 can be appropriately reduced to achieve weight reduction while ensuring structural strength. This thickness design allows the float 110 to meet the requirements of structural strength and stability while minimizing weight and reducing construction costs.

[0041] In this embodiment, the upright is connected to the side wall of the column 200 away from the lower floating body assembly 100, which allows the upright to have a larger working space, facilitating equipment installation and maintenance. At the same time, this connection method also creates a stable structure between the upright and the column 200, improving the overall stability and reliability of the platform.

[0042] The above description is an explanation of the invention, not a limitation thereof. The scope of the invention is defined in the claims. Within the scope of protection of the invention, any form of modification may be made.

Claims

1. A lightweight floating wind turbine platform, characterized in that, include: The lower float assembly comprises three horizontally distributed floats arranged in an equilateral triangle; The columns, numbering three, are connected vertically at the vertices of the triangle of the lower floating body component; A strut, which is horizontally connected between the side walls of two adjacent columns; The float is a hollow structure, comprising multiple transverse bulkheads perpendicular to the outer wall of the float and multiple longitudinal bulkheads parallel to the outer wall of the float, wherein multiple through holes are provided on the longitudinal bulkhead located in the middle position.

2. The lightweight floating wind turbine platform as described in claim 1, characterized in that: The number of longitudinal bulkheads is odd, and the number of longitudinal bulkheads is greater than the number of transverse bulkheads.

3. The lightweight floating wind turbine platform as described in claim 2, characterized in that: The transverse bulkhead has the same sidewall profile as the floating body in the corresponding direction, and the transverse bulkhead penetrates the longitudinal bulkhead.

4. A lightweight floating wind turbine platform as described in claim 3, characterized in that: The cross-section of the float perpendicular to the outer wall has a racetrack-shaped structure.

5. A lightweight floating wind turbine platform as described in any one of claims 1-4, characterized in that: The two adjacent floats are connected by a heave plate, and the heave plate is circumferentially arc-shaped.

6. A lightweight floating wind turbine platform as described in claim 5, characterized in that: The through hole is rectangular or racetrack-shaped, and when the through hole is rectangular, a rounded transition is used at the corners of the rectangle.

7. A lightweight floating wind turbine platform as described in claim 5, characterized in that: Except for the two through holes located in the middle position, the spacing d1 of the other two adjacent through holes is the same, and the spacing d2 of the two through holes located in the middle position satisfies d1 > d2.

8. A lightweight floating wind turbine platform as described in claim 7, characterized in that: There are at least three transverse bulkheads, and at least one transverse bulkhead is located at the midpoint of the longitudinal bulkhead, while the remaining transverse bulkheads are distributed in a mirror image around the midpoint.

9. A lightweight floating wind turbine platform as described in claim 5, characterized in that: The thickness of the outer wall of the float is h1 > the thickness of the transverse bulkhead is h3 > the thickness of the longitudinal bulkhead is h2.

10. A lightweight floating wind turbine platform as described in claim 1, characterized in that: The strut is connected to the end of the column away from the side wall of the lower buoy assembly.

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