Truss combined type multi-fan offshore floating type wind power system

Abstract

The invention discloses a truss combined type multi-fan offshore floating type wind power system which comprises a plurality of buoy parts with the top ends flush, the tops of every two adjacent buoy parts are connected through a transverse truss, a fan part is installed at the top end of each buoy part, and the top ends of the two adjacent buoy parts are connected through a transverse truss. The draught fan component comprises draught fan tower barrels and draught fan assemblies installed at the top ends of the draught fan tower barrels, the draught fan tower barrels are different in height, so that the heights of the draught fan assemblies are different, the powers of the draught fan assemblies are different, and the higher the heights of the draught fan assemblies are, the higher the powers of the draught fan assemblies are. According to the truss combined type multi-fan offshore floating type wind power system, the steel consumption can be reduced, then the construction cost can be reduced, and mutual interference among wake flows of the multiple fan assemblies is small.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore wind power, and in particular relates to a truss-assembled multi-wind turbine offshore floating wind power system. Background Art

[0002] With the global pursuit of the "carbon neutrality" goal, offshore wind power technology, as a stable and clean energy source, has developed rapidly. However, offshore fixed wind power systems have gradually become saturated, and wind power systems have gradually moved from offshore to deep sea. Floating wind power technology has received widespread attention in the industry.

[0003] However, current floating wind power platforms generally only carry one wind turbine assembly and are positioned by a catenary mooring system that occupies a large area, resulting in a low overall sea area utilization rate. To improve sea area utilization efficiency, it is necessary to carry multiple wind turbine assemblies on a single floating platform. However, due to the increase in the number of towers and wind turbine assemblies, the center of gravity of the wind power system as a whole is relatively high, resulting in poor stability. In addition, the spacing between two adjacent wind turbine assemblies is small, so the wakes of multiple wind turbine assemblies interfere with each other greatly when the spacing is small, which is not conducive to the stability and safety of the wind power system. In addition, the overall volume of a multi-wind turbine assembly floating platform is larger than that of a single-wind turbine assembly floating platform, so the corresponding amount of steel used in the vertical and horizontal support structures will increase significantly, and the corresponding construction costs will also increase significantly accordingly. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the present invention provides a truss-assembled multi-wind turbine offshore floating wind power system, which can reduce the amount of steel used and thus reduce construction costs, and the wakes of multiple wind turbine components have less mutual interference.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A truss-assembled multi-wind turbine offshore floating wind power system includes a plurality of buoy components with flush tops. The tops of two adjacent buoy components are connected by a transverse truss. A wind turbine component is installed at the top of each buoy component. The wind turbine component includes a wind tower and a wind turbine assembly installed at the top of the wind tower. The heights of the wind towers are different, so that the heights of the wind turbine assemblies are different, and the power of the wind turbine assemblies is different, and the higher the height of the wind turbine assembly, the greater the power.

[0007] Furthermore, the structures of the buoy components are the same.

[0008] Furthermore, each of the buoy components includes a lower buoy and an upper buoy located above the lower buoy, and the lower buoy and the upper buoy are connected via a vertical truss.

[0009] Furthermore, the axes of the lower buoy and the upper buoy in each of the buoy components coincide with each other.

[0010] Furthermore, the outer diameters of the lower buoy and the upper buoy in each of the buoy components are the same.

[0011] Furthermore, each of the buoy components also includes a variable-section buoy at the upper end of the upper buoy, and the variable-section buoy includes a truncated cone-shaped buoy segment and a cylindrical buoy segment at the upper end of the truncated cone-shaped buoy segment and coinciding with the axis of the truncated cone-shaped buoy segment. The outer diameter of the cylindrical buoy segment is the same as the outer diameter at the upper end of the truncated cone-shaped buoy segment, and the outer diameter at the upper end of the truncated cone-shaped buoy segment is smaller than the outer diameter at the lower end; the tops of two adjacent cylindrical buoy segments are connected by a transverse truss.

[0012] Furthermore, the variable-section buoy in each of the buoy components coincides with the axis of the upper buoy, and each of the wind turbine towers is fixed at the middle of the top surface of the corresponding cylindrical buoy segment.

[0013] Furthermore, the outer diameter of the lower end of the truncated cone-shaped buoy section in each of the buoy components is the same as the outer diameter of the upper buoy.

[0014] Furthermore, each of the transverse trusses is above the sea surface, and the lower portion of each of the cylindrical buoy sections is below the sea surface and the upper portion is above the sea surface.

[0015] Furthermore, there are three buoy components and they are respectively called the first buoy component, the second buoy component and the third buoy component; the first buoy component includes a first lower buoy, a first vertical truss, a first upper buoy and a first variable-section buoy, the first variable-section buoy includes a first truncated cone buoy segment and a first cylindrical buoy segment, the wind turbine component installed on the top of the first buoy component is called a first wind turbine component, and the first wind turbine component includes a first wind tower and a first wind turbine assembly; the second buoy component includes a second lower buoy, a second vertical truss, a second upper buoy and a second variable-section buoy, the second variable-section buoy includes a second truncated cone buoy segment and a second cylindrical buoy segment, the wind turbine component installed on the top of the second buoy component is called a second wind turbine component, and the second wind turbine component includes a second wind tower and a second wind assembly; the third The pontoon component includes a third lower pontoon, a third vertical truss, a third upper pontoon and a third variable-section pontoon. The third variable-section pontoon includes a third conical pontoon section and a third cylindrical pontoon section. The wind turbine component installed on the top of the third pontoon component is called a third wind turbine component. The third wind turbine component includes a third wind turbine tower and a third wind turbine assembly. The transverse truss connected between the top of the first cylindrical pontoon section and the top of the second cylindrical pontoon section is called a first transverse truss, the transverse truss connected between the top of the first cylindrical pontoon section and the top of the third cylindrical pontoon section is called a second transverse truss, and the transverse truss connected between the top of the second cylindrical pontoon section and the top of the third cylindrical pontoon section is called a third transverse truss. The heights of the first wind turbine assembly, the second wind turbine assembly and the third wind turbine assembly decrease in sequence and their powers decrease in sequence.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The truss-assembled multi-wind turbine offshore floating wind power system in the present invention includes a plurality of buoy components with flush tops. The tops of two adjacent buoy components are connected by a transverse truss. A wind turbine component is installed at the top of each buoy component. The wind turbine component includes a wind tower and a wind turbine assembly installed at the top of the wind tower. The heights of the wind towers are different, so that the heights of the wind turbine assemblies are different, and the power of the wind turbine assemblies is different, and the higher the height of the wind turbine assembly, the greater the power. Since the tops of two adjacent buoy components are connected by a transverse truss, the transverse truss replaces the traditional large-volume transverse support structure, which can reduce the amount of steel used and thus reduce the construction cost; and since the heights of the wind turbine components are different and the power of the wind turbine components is different, and the higher the height of the wind turbine component, the greater the power, the wakes of the multiple wind turbine components interfere less with each other, which is beneficial to improving the stability and safety of the truss-combined multi-wind turbine offshore floating wind power system, and the higher the power of the wind turbine, the higher the height, which can allocate more wind resources and thus obtain greater power generation efficiency; in addition, the setting of multiple wind turbine components can improve the sea area utilization rate of the truss-combined multi-wind turbine offshore floating wind power system.

[0018] In the present invention, each buoy component has the same structure. Each buoy component includes a lower buoy and an upper buoy located above the lower buoy. The lower and upper buoys are connected by a vertical truss. Replacing the traditional bulky vertical support structure with a vertical truss can reduce the amount of steel used, thereby reducing construction costs. Furthermore, by providing a vertical truss between the lower and upper buoys, the position of the lower buoy is lowered compared to a direct connection between the lower and upper buoys. This downward shift in the position of the lower buoy lowers the center of gravity of the corresponding buoy component, thereby lowering the center of gravity of the entire truss-assembled multi-wind turbine offshore floating wind power system, thereby improving the overall stability of the truss-assembled multi-wind turbine offshore floating wind power system.

[0019] In the present invention, each buoy component also includes a variable-section buoy at the upper end of the upper buoy, and the variable-section buoy includes a truncated cone buoy segment and a cylindrical buoy segment at the upper end of the truncated cone buoy segment and coinciding with the axis of the truncated cone buoy segment. The outer diameter of the cylindrical buoy segment is the same as the outer diameter at the upper end of the truncated cone buoy segment, and the outer diameter at the upper end of the truncated cone buoy segment is smaller than the outer diameter at the lower end. The tops of two adjacent cylindrical buoy segments are connected by a transverse truss. Each transverse truss is above the sea surface, and the lower part of each cylindrical buoy segment is below the sea surface and the upper part is above the sea surface. In this way, the variable-section buoy can reduce the wave impact on the corresponding buoy component by reducing the cross-sectional area near the sea surface while providing buoyancy for the corresponding buoy component, thereby improving the overall safety of the truss-combined multi-wind turbine offshore floating wind power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the truss-assembled multi-wind turbine offshore floating wind power system of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure of the truss-assembled multi-wind turbine offshore floating wind power system of the present invention;

[0022] Figure 3 Schematic diagram of the top view of the structure of the truss-assembled multi-wind turbine offshore floating wind power system of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the buoy components.

[0024] Explanation of the reference numerals in the figure: 1. buoy component, 101. lower buoy, 102. upper buoy, 103. vertical truss, 104. variable-section buoy, 1041. frustum-shaped buoy segment, 1042. cylindrical buoy segment, 2. wind turbine component, 201. wind turbine tower, 202. wind turbine assembly, 3. transverse truss. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0029] like Figure 1-Figure 3 As shown, a truss-assembled multi-wind turbine offshore floating wind power system includes a plurality of buoy components 1 with flush tops. The tops of two adjacent buoy components 1 are connected by a transverse truss 3. A wind turbine component 2 is installed at the top of each buoy component 1. The wind turbine component 2 includes a wind tower 201 and a wind turbine assembly 202 installed at the top of the wind tower 201. The heights of the wind towers 201 are different, so that the heights of the wind turbine assemblies 202 are different, and the power of the wind turbine assemblies 202 is different, and the higher the height of the wind turbine assembly 202, the greater the power.

[0030] Since the tops of two adjacent buoy components 1 are connected by a transverse truss 3, the transverse truss 3 replaces the traditional large-volume transverse support structure, which can reduce the amount of steel used and thus reduce the construction cost; and since the heights of the wind turbine components 202 are different, and the power of the wind turbine components 202 is different, and the higher the height of the wind turbine component 202, the greater the power, the wakes of the multiple wind turbine components 202 interfere with each other less, which is beneficial to improving the stability and safety of the truss-combined multi-wind turbine offshore floating wind power system, and the wind turbine with greater power is located at a higher height, so that more wind resources can be allocated, thereby achieving greater power generation efficiency; in addition, by setting up multiple wind turbine components 202, the sea area utilization rate of the truss-combined multi-wind turbine offshore floating wind power system can be improved.

[0031] The structures of the buoy components 1 are the same.

[0032] In one embodiment,

[0033] like Figure 1-Figure 4 As shown, each buoy component 1 includes a lower buoy 101 and an upper buoy 102 located above the lower buoy 101 , and the lower buoy 101 and the upper buoy 102 are connected via a vertical truss 103 .

[0034] In this way, by replacing the traditional large-volume vertical support structure with the vertical truss 103, the amount of steel used can be reduced, thereby reducing the construction cost. Moreover, by arranging the vertical truss 103 between the lower buoy 101 and the upper buoy 102, the position of the lower buoy 101 is moved downward compared to the case where the lower buoy 101 and the upper buoy 102 are directly connected. The downward movement of the position of the lower buoy 101 can lower the center of gravity of the corresponding buoy component 1, thereby lowering the center of gravity of the entire truss-combined multi-wind turbine offshore floating wind power system, thereby providing the overall stability of the truss-combined multi-wind turbine offshore floating wind power system.

[0035] The axes of the lower buoy 101 and the upper buoy 102 in each buoy component 1 coincide with each other.

[0036] In a preferred embodiment, the outer diameters of the lower buoy 101 and the upper buoy 102 in each buoy component 1 are the same.

[0037] In another preferred embodiment,

[0038] like Figure 1-Figure 4 As shown, each buoy component 1 also includes a variable-section buoy 104 at the upper end of the upper buoy 102. The variable-section buoy 104 includes a truncated cone buoy segment 1041 and a cylindrical buoy segment 1042 at the upper end of the truncated cone buoy segment 1041 and coinciding with the axis of the truncated cone buoy segment 1041. The outer diameter of the cylindrical buoy segment 1042 is the same as the outer diameter at the upper end of the truncated cone buoy segment 1041, and the outer diameter at the upper end of the truncated cone buoy segment 1041 is smaller than the outer diameter at the lower end. The tops of two adjacent cylindrical buoy segments 1042 are connected by a transverse truss 3.

[0039] The variable-section buoy 104 in each buoy component 1 coincides with the axis of the upper buoy 102, and each wind turbine tower 201 is fixed to the middle of the top surface of the corresponding cylindrical buoy segment 1042. The outer diameter of the lower end of the frustum-shaped buoy segment 1041 in each buoy component 1 is the same as the outer diameter of the upper buoy 102.

[0040] Each transverse truss 3 is above the sea surface, and each cylindrical buoy segment 1042 has its lower portion below the sea surface and its upper portion above the sea surface. This variable-section buoy 104 not only provides buoyancy for the corresponding buoy component 1, but also reduces the impact of waves on the corresponding buoy component 1 by reducing its cross-sectional area near the sea surface, thereby improving the overall safety of the truss-assembled multi-turbine offshore floating wind power system.

[0041] Among them, there are three buoy components 1 and they are respectively called the first buoy component, the second buoy component and the third buoy component; the first buoy component includes a first lower buoy, a first vertical truss, a first upper buoy and a first variable-section buoy, the first variable-section buoy includes a first truncated cone buoy segment and a first cylindrical buoy segment, the wind turbine component 2 installed on the top of the first buoy component is called a first wind turbine component, and the first wind turbine component includes a first wind turbine tower and a first wind turbine assembly; the second buoy component includes a second lower buoy, a second vertical truss, a second upper buoy and a second variable-section buoy, the second variable-section buoy includes a second truncated cone buoy segment and a second cylindrical buoy segment, the wind turbine component 2 installed on the top of the second buoy component is called a second wind turbine component, and the second wind turbine component includes a second wind tower and a second wind assembly; the third buoy component includes It includes a third lower pontoon, a third vertical truss, a third upper pontoon and a third variable-section pontoon. The third variable-section pontoon includes a third conical pontoon section and a third cylindrical pontoon section. The wind turbine component 2 installed on the top of the third pontoon component is called a third wind turbine component. The third wind turbine component includes a third wind turbine tower and a third wind turbine assembly; the transverse truss 3 connected between the top of the first cylindrical pontoon section and the top of the second cylindrical pontoon section is called a first transverse truss, the transverse truss 3 connected between the top of the first cylindrical pontoon section and the top of the third cylindrical pontoon section is called a second transverse truss, and the transverse truss 3 connected between the top of the second cylindrical pontoon section and the top of the third cylindrical pontoon section is called a third transverse truss; the heights of the first wind turbine assembly, the second wind turbine assembly and the third wind turbine assembly decrease in sequence and their powers decrease in sequence.

[0042] In the working state, the first wind turbine assembly, the second wind turbine assembly and the third wind turbine assembly operate simultaneously at different heights, with little mutual influence, and can fully utilize sea resources.

[0043] In the present invention, by setting up multiple wind turbine assemblies 202, the sea area utilization rate of the truss-combined multi-wind turbine offshore floating wind power system can be improved, and the wakes of the multiple wind turbine assemblies 202 interfere with each other less, which is beneficial to improving the stability and safety of the truss-combined multi-wind turbine offshore floating wind power system. Moreover, by setting up the transverse truss 3 and the vertical truss 103, the amount of steel used can be reduced, thereby reducing the construction cost. The setting of the vertical truss 103 causes the position of the lower buoy 101 to move downward, thereby lowering the overall center of gravity of the truss-combined multi-wind turbine offshore floating wind power system, thereby providing the overall stability of the truss-combined multi-wind turbine offshore floating wind power system. In addition, the variable-section buoy 104, while providing buoyancy for the corresponding buoy component 1, can reduce the wave impact on the corresponding buoy component 1 by reducing the cross-sectional area near the sea surface, thereby improving the overall safety of the truss-combined multi-wind turbine offshore floating wind power system.

[0044] In summary, this truss-assembled multi-wind turbine offshore floating wind power system can solve the problem in the background technology that the current single-wind turbine floating wind power technology fails to fully utilize marine resources, and can solve the problems in the background technology of the current multi-wind turbine floating wind power technology, such as poor stability, high construction cost, and large mutual interference between the wakes of the wind turbines.

[0045] 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 truss-assembled multi-wind turbine offshore floating wind power system, characterized by: The invention comprises a plurality of buoy components (1) with flush tops, the tops of two adjacent buoy components (1) being connected via a transverse truss (3), a wind turbine component (2) being installed at the top of each buoy component (1), the wind turbine component (2) comprising a wind turbine tower (201) and a wind turbine assembly (202) installed at the top of the wind turbine tower (201), the heights of the wind turbine towers (201) being different, so that the heights of the wind turbine assemblies (202) are different, and the power of the wind turbine assemblies (202) is different, and the higher the height of the wind turbine assembly (202), the greater the power.

2. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 1, characterized in that: The structures of the buoy components (1) are the same.

3. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 2, characterized in that: Each buoy component (1) comprises a lower buoy (101) and an upper buoy (102) located above the lower buoy (101), and the lower buoy (101) and the upper buoy (102) are connected via a vertical truss (103).

4. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 3, characterized in that: The axes of the lower buoy (101) and the upper buoy (102) in each buoy component (1) coincide with each other.

5. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 4, characterized in that: The outer diameters of the lower buoy (101) and the upper buoy (102) in each buoy component (1) are the same.

6. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 4, characterized in that: Each of the buoy components (1) also includes a variable-section buoy (104) located at the upper end of the upper buoy (102), and the variable-section buoy (104) includes a truncated cone buoy section (1041) and a cylindrical buoy section (1042) located at the upper end of the truncated cone buoy section (1041) and coinciding with the axis of the truncated cone buoy section (1041), the outer diameter of the cylindrical buoy section (1042) is the same as the outer diameter at the upper end of the truncated cone buoy section (1041), and the outer diameter at the upper end of the truncated cone buoy section (1041) is smaller than the outer diameter at the lower end; the tops of two adjacent cylindrical buoy sections (1042) are connected by a transverse truss (3).

7. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 6, characterized in that: The variable cross-section buoy (104) in each buoy component (1) coincides with the axis of the upper buoy (102), and each wind turbine tower (201) is fixed to the middle of the top surface of the corresponding cylindrical buoy section (1042).

8. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 7, characterized in that: The outer diameter of the lower end of the truncated cone-shaped buoy section (1041) in each buoy component (1) is the same as the outer diameter of the upper buoy (102).

9. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 6, characterized in that: Each of the transverse trusses (3) is above the sea surface, and the lower portion of each of the cylindrical buoy sections (1042) is below the sea surface and the upper portion is above the sea surface.

10. The truss-assembled multi-wind turbine offshore floating wind power system according to claim 6, characterized in that: The buoy components (1) are three and are respectively called the first buoy component, the second buoy component and the third buoy component; the first buoy component includes a first lower buoy, a first vertical truss, a first upper buoy and a first variable-section buoy, the first variable-section buoy includes a first truncated cone buoy section and a first cylindrical buoy section, the wind turbine component (2) installed on the top of the first buoy component is called the first wind turbine component, the first wind turbine component includes a first wind turbine tower and a first wind turbine assembly; the second buoy component includes a second lower buoy, a second vertical truss, a second upper buoy and a second variable-section buoy, the second variable-section buoy includes a second truncated cone buoy section and a second cylindrical buoy section, the wind turbine component (2) installed on the top of the second buoy component is called the second wind turbine component, the second wind turbine component includes a second wind turbine tower and a second wind turbine assembly; the third buoy component The invention comprises a third lower buoy, a third vertical truss, a third upper buoy and a third variable-section buoy, wherein the third variable-section buoy comprises a third truncated cone buoy section and a third cylindrical buoy section, the wind turbine component (2) installed on the top of the third buoy component is called a third wind turbine component, and the third wind turbine component comprises a third wind turbine tower and a third wind turbine assembly; the transverse truss (3) connected between the top of the first cylindrical buoy section and the top of the second cylindrical buoy section is called a first transverse truss, the transverse truss (3) connected between the top of the first cylindrical buoy section and the top of the third cylindrical buoy section is called a second transverse truss, and the transverse truss (3) connected between the top of the second cylindrical buoy section and the top of the third cylindrical buoy section is called a third transverse truss; the heights of the first wind turbine assembly, the second wind turbine assembly and the third wind turbine assembly decrease in sequence and their powers decrease in sequence.

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