Floating wind power foundation and offshore wind power generation equipment

Abstract

The utility model relates to a floating type wind power foundation and offshore wind power generation equipment, a plurality of stand columns are connected together through connecting pieces to form a main body of the floating type wind power foundation, a first connecting piece and a second connecting piece are respectively used for connecting adjacent stand columns at a first connecting position and a second connecting position on the stand columns, the first stand column and the second stand column are connected through the first inter-column connecting rod, the first stand column and the third stand column are connected through the second inter-column connecting rod, and the second stand column and the third stand column are connected through the third inter-column connecting rod. By means of the structural connection mode, connection parts among the first stand column, the second stand column and the third stand column are simpler than connection parts in the prior art, the steel consumption is reduced, and the number of connection points is reduced. In addition, through reasonable arrangement, effective transmission of loads is achieved, and the structural strength required by yield analysis and buckling analysis of the offshore floating type device can be kept and met.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power, in particular to a floating wind power foundation. Background Art

[0002] In recent years, wind power technology has developed rapidly, and the global wind power installed capacity has continued to grow. In China, the wind power industry has also developed rapidly. According to the national power industry statistics in 2023, China's wind power installed capacity is about 440 million kilowatts, a year-on-year increase of 20.7%. It can be seen from the data that wind power has become one of the fastest growing energy sources in China.

[0003] As of the end of November 2023, 17 large offshore wind power industry clusters have been established in my country's coastal areas. However, in the first three quarters of 2023, the country's new wind power installed capacity was 33.48 million kilowatts, of which 32.05 million kilowatts were onshore wind and only 1.43 million kilowatts were offshore wind. The new offshore wind installed capacity in the first three quarters increased by only 15% compared with 1.24 million kilowatts in the first three quarters of 2022. It can be seen that the scale of offshore wind power still has huge room for improvement compared with land wind power.

[0004] As the shortcomings of onshore wind power become increasingly apparent, such as geographical restrictions, limited land resources, and damage to the land environment, the promotion of offshore wind power projects has become increasingly urgent.

[0005] Compared with onshore wind power, the investment cost of offshore wind power is about twice that of onshore wind power, of which the cost of offshore wind power foundation is one of the important components. In order to achieve the expected structural strength, the offshore wind power foundation in the relevant technology uses a large number of rods for support, and the structure is complex. This type of wind power foundation with complex structure uses a large amount of steel and has a high cost. In addition, due to the complex structure, there are many connection points between the rods, which are more susceptible to seawater erosion. If effective anti-corrosion measures are not taken, it is difficult to ensure the strength and safety of the structure, and maintenance personnel are required to monitor frequently. Anti-corrosion and monitoring further increase the maintenance cost.

[0006] Therefore, it is necessary to develop a new type of floating wind power foundation and offshore wind power generation equipment to improve some of the above-mentioned problems existing in related technologies. Utility Model Content

[0007] The utility model aims to provide a floating wind power foundation with a relatively streamlined structure, which can reduce the amount of steel used and the number of connection points between components, thereby achieving lower sea power costs.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] The floating wind power foundation provided by the utility model comprises: columns and connecting parts;

[0010] The connecting member is used to connect the adjacent columns to form the main body of the floating foundation;

[0011] Wherein, the pillars include a first pillar, a second pillar and a third pillar;

[0012] The column comprises a first connection position and a second connection position which are spaced apart in the length direction thereof;

[0013] The connecting member includes a first connecting member and a second connecting member;

[0014] The first connecting member is used to connect the first connecting positions of adjacent columns, and the second connecting member is used to connect the second connecting positions of adjacent columns;

[0015] The first connecting member includes a first inter-column connecting rod and a second inter-column connecting rod, the first inter-column connecting rod has two ends connected to the first column and the second column respectively, and the second inter-column connecting rod has two ends connected to the first column and the third column respectively;

[0016] The second connecting member comprises a third inter-column connecting rod, and two ends of the third inter-column connecting rod are respectively connected to the second column and the third column;

[0017] The first connecting member further comprises a first brace, two ends of which are respectively connected to the first inter-column connecting rod and the second inter-column connecting rod;

[0018] The first support rod is parallel to the third inter-column connecting rod.

[0019] Compared with the related art, the floating wind power foundation provided by the utility model connects several of the columns together through the connecting member to form the main body of the floating wind power foundation, and the first connecting member and the second connecting member connect the adjacent columns at the first connecting position and the second connecting position on the columns respectively, wherein the first inter-column connecting rod connects the first column and the second column, the second inter-column connecting rod connects the first column and the third column, and the third inter-column connecting rod connects the second column and the third column. This structural connection method makes the connecting parts between the first column, the second column and the third column more streamlined than the related art, reduces the amount of steel used, reduces the number of connection points, and is conducive to reducing the cost of wind power.

[0020] Optionally, the second connecting member further includes a second support rod, and two ends of the second support rod are respectively connected to the first column and the third inter-column connecting rod.

[0021] Optionally, the second support rod is perpendicular to the third inter-column connecting rod.

[0022] Optionally, two ends of the first support rod are respectively connected to the middle area of ​​the first inter-column connecting rod and the second inter-column connecting rod in the length direction.

[0023] Optionally, the cross-sectional shape of the first inter-column connecting rod and the second inter-column connecting rod is rectangular.

[0024] Optionally, the cross-sectional shape of the first brace rod, the second brace rod and the third inter-column connecting rod is circular.

[0025] Optionally, the cross-sectional shape of the column is circular, and the first connection position and the second connection position are located on the side of the column.

[0026] Optionally, the first connection position and the second connection position are respectively located at two end areas of the column.

[0027] Optionally, the first connecting member is located at one end of the column close to the seabed; the floating wind power foundation further comprises a damping plate, which is arranged on the first inter-column connecting rod and the second inter-column connecting rod. The damping plate has the function of increasing the motion added mass and sway damping, which can effectively reduce the heave, pitch and roll, improve the floating stability of the platform in relatively severe sea conditions, and can adapt to the offshore waters with more severe environments, making it more applicable.

[0028] The utility model provides an offshore wind power generation equipment, characterized in that it comprises:

[0029] Wind power installations, anchoring devices and the above-mentioned floating wind power foundations;

[0030] The wind power device is arranged on the floating wind power foundation and is used to convert offshore wind energy into electrical energy;

[0031] The anchoring devices are respectively connected to the floating wind power foundation and the seabed, and are used to anchor the floating wind power foundation.

[0032] Compared with the related art, the offshore wind power generation equipment provided by the utility model can reduce the steel usage and the number of connection points by arranging the wind power device on the floating wind power foundation due to the simplified structure of the floating wind power foundation. In addition, by reasonably arranging the first support rod, the second support rod and the third inter-column connecting rod, the load is effectively transferred, so that the floating wind power foundation can still maintain the structural strength required by the yield analysis and buckling analysis of the offshore floating device under the simplified structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1This is a schematic diagram of the structure of a floating wind power foundation in an embodiment of the utility model;

[0034] Figure 2 for Figure 1 A schematic diagram of the connection between the first connecting member and the column shown;

[0035] Figure 3 for Figure 1 Schematic diagram of the connection between the second connecting member and the column shown.

[0036] Reference numerals:

[0037] 101, first column; 102, second column; 103, third column; 201, first connecting member; 2011, first column connecting rod; 2012, second column connecting rod; 2013, first support rod; 202, second connecting member; 2021, third column connecting rod; 2022, second support rod; 2023, third support rod; 2024, fourth support rod; 3, damping plate; 4, reinforcing ribs. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0039] The utility model embodiment provides a floating wind power foundation, referring to Figure 1The floating wind power foundation comprises columns and connectors; the connectors are used to connect adjacent columns to form the main body of the floating wind power foundation; the columns comprise a first column 101, a second column 102 and a third column 103; the columns comprise a first connection position and a second connection position spaced apart in the length direction thereof; the connectors comprise a first connector 201 and a second connector 202; the first connector 201 is used to connect the first connection position of adjacent columns, and the second connector 202 is used to connect the second connection position of adjacent columns; the first connector 201 comprises a first column-to-column connecting rod 2011 and a second column-to-column connecting rod 2012, the The two ends of the first inter-column connecting rod 2011 are respectively connected to the first column 101 and the second column 102, and the two ends of the second inter-column connecting rod 2012 are respectively connected to the first column 101 and the third column 103; the second connecting member 202 includes a third inter-column connecting rod 2021, and the two ends of the third inter-column connecting rod 2021 are respectively connected to the second column 102 and the third column 103; the first connecting member 201 also includes a first support rod 2013, and the two ends of the first support rod 2013 are respectively connected to the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012; the first support rod 2013 is parallel to the third inter-column connecting rod 2021.

[0040] In some embodiments of the present invention, the cross-sectional area of ​​the first inter-column connecting rod 2011 or the second inter-column connecting rod 2012 is greater than that of the third inter-column connecting rod 2021 .

[0041] In some embodiments of the present invention, the cross-sectional areas of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 are greater than those of the third inter-column connecting rod 2021 .

[0042] In some embodiments of the present invention, the cross-sectional area of ​​the first inter-column connecting rod 2011 or the second inter-column connecting rod 2012 is larger than that of the first support rod 2013 and the second support rod 2022 .

[0043] In some embodiments of the present invention, the cross-sectional areas of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 are larger than those of the first support rod 2013 and the second support rod 2022 .

[0044] By reducing the structural size and simplifying the connection structure, the hydrodynamic load on the floating wind power foundation can be reduced. The wind power device and tower of the offshore wind power generation equipment are subject to large wind loads and heavy weight, and need to be set on the main force-bearing structure of the floating wind power foundation. The first column 101 in the floating wind power foundation is the main force-bearing structure. The first column connecting rod 2011 and the second column connecting rod 2012 connected to the first column 101 have a larger cross-sectional area than the third column connecting rod 2021, and have higher rigidity, so that it can withstand greater pressure, bending moment and torque, and can transfer the load to the second column 102 and the third column 103. The two ends of the second brace 2022 are connected to the first column 101 and the third column connecting rod 2021 respectively, and the two ends of the third column connecting rod 2021 are connected to the second column 102 and the third column 103 respectively, which can withstand the impact from the outer side of the floating wind power foundation to resist the external load of the first column 101, the second column 102 and the third column 103. The load on the second column 102 and the third column 103 itself is relatively small, so the connecting buoy of the conventional offshore floating structure is simplified to the first brace 2013, so that the first brace 2013 and the third column connecting rod 2021 are parallel, which can provide additional torsional stiffness and axial stiffness for the floating wind power foundation at the same time, which is used to resist the torque and lateral load on the floating wind power foundation. Therefore, the floating wind power foundation can still maintain the structural strength required by the yield analysis and buckling analysis of the offshore floating device under the simplified structure.

[0045] In some embodiments of the utility model, the columns are arranged in a manner perpendicular to the sea surface, the floating wind power foundation is pulled by the anchoring device and semi-submerged in the water of the ocean, and one end of the column extends out of the sea surface.

[0046] In some embodiments of the present invention, the ratio between the maximum spacing between adjacent columns and the height of the columns is 1:1 to 5:1, which increases the heave damping and is beneficial to improving the floating stability of the floating wind power foundation.

[0047] In some embodiments of the present invention, reference Figure 2 and Figure 3 The number of the columns is three, and the columns include the first column 101, the second column 102 and the third column 103. The layout of the first column 101, the second column 102 and the third column 103 is triangular in shape when viewed from a perspective perpendicular to the sea surface.

[0048] In some specific embodiments, the layout of the first column 101, the second column 102 and the third column 103 is in a triangular shape when viewed from a perspective perpendicular to the sea surface, wherein the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 have the same length, so that the triangular shape is an isosceles triangle.

[0049] In some specific embodiments, the layout of the first column 101, the second column 102 and the third column 103 is in a triangular shape when viewed from a perspective perpendicular to the sea surface, wherein the first column connecting rod 2011, the second column connecting rod 2012 and the third column connecting rod 2021 have the same length, so that the triangular shape is an equilateral triangle.

[0050] In some specific embodiments, the layout of the first column 101, the second column 102 and the third column 103 is in a triangular shape when viewed from a perspective perpendicular to the sea surface, wherein the angle between the first column connecting rod 2011 and the second column connecting rod 2012 is 90 degrees, making the triangular shape a right triangle.

[0051] In some embodiments of the utility model, the column includes the first connection position and the second connection position, which are connection points of the column spaced apart in the length direction and used to connect the first connecting member 201 and the second connecting member 202.

[0052] In some specific embodiments, the first connecting member 201 and the second connecting member 202 may be flat structure components composed of rod-shaped parts, so that a two-layer connection structure arranged at intervals is formed between the first column 101, the second column 102 and the third column 103 at the first connection position and the second connection position thereof.

[0053] In some specific embodiments, the two-layer connection structure includes a first layer connection structure exposed on the sea surface, and a second layer connection structure submerged in the ocean water body.

[0054] In some embodiments of the present invention, the first inter-column connecting rod 2011, the second inter-column connecting rod 2012 and the first support rod 2013 are hollow structures to provide the floating wind power foundation with a certain buoyancy.

[0055] In some specific embodiments, referring to Figure 3 The first connecting member 201 may be a flat structure component composed of rod-shaped parts, and the first connecting member 201 is A-shaped when viewed from a perspective perpendicular to the sea surface.

[0056] In some specific embodiments, referring to Figure 2 The second connecting member 202 may be a flat structure component composed of rod-shaped parts, and the first connecting member 201 is T-shaped when viewed from a perspective perpendicular to the sea surface.

[0057] In some embodiments of the present invention, reference Figure 1 The second connecting member 202 also includes a second support rod 2022, and two ends of the second support rod 2022 are respectively connected to the first column 101 and the third inter-column connecting rod 2021.

[0058] In some specific embodiments, referring to Figure 3 The two ends of the first support rod 2013 are respectively connected to the respective middle areas of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012. The shape of the first support rod 2013 can be a straight line, a curve or a broken line, and the present invention does not impose any limitation on this.

[0059] In some specific embodiments, referring to Figure 2 The two ends of the second support rod 2022 are respectively connected to the second connection position of the first column 101 and the middle area of ​​the third inter-column connecting rod 2021. The shape of the second support rod 2022 can be straight, curved or broken line, and the present invention does not impose any limitation on this.

[0060] In some embodiments of the present invention, reference Figure 2 , the second support rod 2022 is perpendicular to the third inter-column connecting rod 2021.

[0061] In some embodiments of the present invention, reference Figure 3 The two ends of the first support rod 2013 are respectively connected to the middle area of ​​the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 in the length direction.

[0062] In some embodiments of the present invention, the cross-sectional shapes of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 are rectangular.

[0063] In other embodiments of the present invention, the cross-sectional shapes of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 can be a perfect circle, an ellipse, a triangle or other shapes, and the present invention does not limit this.

[0064] In some embodiments of the present invention, the cross-sectional shapes of the first support rod 2013, the second support rod 2022 and the third inter-column connecting rod 2021 are circular.

[0065] In other embodiments of the present invention, the cross-sectional shapes of the first support rod 2013, the second support rod 2022 and the third inter-column connecting rod 2021 can be rectangular, elliptical, triangular or other shapes, and the present invention does not limit this.

[0066] In some embodiments of the present invention, the cross-sectional shape of the column is circular, and the first connection position and the second connection position are located on the side of the column.

[0067] In other embodiments of the present invention, the cross-sectional shape of the column may be rectangular, elliptical, triangular or other shapes, and the present invention is not limited thereto.

[0068] In some embodiments of the present invention, the first connection position and the second connection position are respectively located at two end areas of the column.

[0069] In some embodiments of the present invention, reference Figure 2 The floating wind power foundation further includes a third support rod 2023 , one end of the third support rod 2023 is connected to the middle area of ​​the second support rod 2022 , and the other end is connected to the third inter-column connecting rod 2021 .

[0070] In some specific embodiments, referring to Figure 2 The connection point between the third brace rod 2023 and the third inter-column connecting rod 2021 is located between the end of the second brace rod 2022 and the second column 102 .

[0071] In some other specific embodiments, the connection point between the third support rod 2023 and the third inter-column connecting rod 2021 is located between the end of the second support rod 2022 and the third column 103 .

[0072] In some embodiments of the present invention, reference Figure 1 The floating wind power foundation further includes a fourth support rod 2024 , one end of which is connected to the middle area of ​​the second support rod 2022 , and the other end of which is connected to the first connection position of the second column 102 .

[0073] In some other specific embodiments, one end of the fourth support rod 2024 is connected to the middle area of ​​the second support rod 2022 , and the other end is connected to the first connection position of the second column 102 or the third column 103 .

[0074] In some embodiments of the present invention, reference Figure 1The first connecting member 201 is located at one end of the column close to the seabed; the floating wind power foundation also includes a damping plate 3, and the damping plate 3 is arranged on the first column connecting rod 2011 and the second column connecting rod 2012.

[0075] In some specific embodiments, referring to Figure 1 The cross-sectional shape of the first inter-column connecting rod 2011 and the second inter-column connecting rod is a rectangle, the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 include a bottom surface parallel to the sea surface and a side surface perpendicular to the sea surface, the damping plate 3 is connected to the intersection of the bottom surface and the side surface of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 in a manner parallel to the bottom surface of the first inter-column connecting rod 2011 or the second inter-column connecting rod 2012, and the damping plate 3 is connected to the side surface by a reinforcing rib 4.

[0076] In some specific embodiments, referring to Figure 1 After the damping plate 3 extends in the length direction of the first inter-column connecting rod 2011 and the second inter-column connecting rod 2012 to the end of the first inter-column connecting rod 2011 or the second inter-column connecting rod 2012, it continues to extend along the side of the column, that is, the damping plate 3 is partially connected to the intersection of the bottom surface and the side surface of the column.

[0077] In some specific embodiments, the width of the damping plate 3 is 2 to 5 meters, and the angle between the damping plate 3 and the plane where the first connecting member 201 is located is in the range of ±15°.

[0078] An embodiment of the utility model also provides an offshore wind power generation equipment, characterized in that it includes: a wind power device, an anchoring device and the above-mentioned floating wind power foundation; the wind power device is arranged on the floating wind power foundation, and is used to convert offshore wind energy into electrical energy; the anchoring device is respectively connected to the floating wind power foundation and the seabed, and is used to anchor the floating wind power foundation.

[0079] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of relevant technologies should be within the scope of protection determined by the claims.

Claims

1. A floating wind power foundation, characterized in that: include: Column; A connecting member, used to connect adjacent columns to form a main body of the floating wind power foundation; Wherein, the columns include a first column (101), a second column (102) and a third column (103); The column comprises a first connection position and a second connection position which are spaced apart in the length direction thereof; The connecting member comprises a first connecting member (201) and a second connecting member (202); The first connecting member (201) is used to connect the first connecting position of the adjacent columns, and the second connecting member (202) is used to connect the second connecting position of the adjacent columns; The first connecting member (201) comprises a first inter-column connecting rod (2011) and a second inter-column connecting rod (2012), the two ends of the first inter-column connecting rod (2011) are respectively connected to the first column (101) and the second column (102), and the two ends of the second inter-column connecting rod (2012) are respectively connected to the first column (101) and the third column (103); The second connecting member (202) comprises a third inter-column connecting rod (2021), and two ends of the third inter-column connecting rod (2021) are respectively connected to the second column (102) and the third column (103); The first connecting member (201) further comprises a first support rod (2013), and two ends of the first support rod (2013) are respectively connected to the first inter-column connecting rod (2011) and the second inter-column connecting rod (2012); The first support rod (2013) is parallel to the third inter-column connecting rod (2021).

2. The floating wind power foundation according to claim 1, characterized in that: The second connecting member (202) further comprises a second support rod (2022), and two ends of the second support rod (2022) are respectively connected to the first column (101) and the third inter-column connecting rod (2021).

3. The floating wind power foundation according to claim 2, characterized in that: The second support rod (2022) is perpendicular to the third inter-column connecting rod (2021).

4. The floating wind power foundation according to claim 1, characterized in that: Both ends of the first support rod (2013) are respectively connected to the middle areas of the first inter-column connecting rod (2011) and the second inter-column connecting rod (2012) in the length direction.

5. The floating wind power foundation according to claim 1, characterized in that: The cross-sectional shapes of the first inter-column connecting rod (2011) and the second inter-column connecting rod (2012) are rectangular.

6. The floating wind power foundation according to claim 2, characterized in that: The cross-sectional shapes of the first support rod (2013), the second support rod (2022) and the third inter-column connecting rod (2021) are circular.

7. The floating wind power foundation according to claim 1, characterized in that: The cross-section of the column is circular, and the first connection position and the second connection position are located on the side of the column.

8. The floating wind power foundation according to claim 1, characterized in that: The first connection position and the second connection position are respectively located at two end areas of the column.

9. The floating wind power foundation according to claim 8, characterized in that: The first connecting member (201) is located at one end of the column close to the seabed; the floating wind power foundation also includes a damping plate (3), and the damping plate (3) is arranged on the first inter-column connecting rod (2011) and the second inter-column connecting rod (2012).

10. An offshore wind power generation device, characterized in that: include: A wind power device, an anchoring device and a floating wind power foundation as claimed in any one of claims 1 to 9; The wind power device is arranged on the first column of the floating wind power foundation and is used to convert offshore wind energy into electrical energy; The anchoring devices are respectively connected to the floating wind power foundation and the seabed, and are used to anchor the floating wind power foundation.

Images