Offshore wind turbine generator foundation suitable for wind-wave-flow-soil coupling

Abstract

The offshore wind turbine generator foundation comprises a tower drum and a supporting assembly, the tower drum extends in the up-down direction, the lower end of the tower drum is located on the seabed, the supporting assembly comprises a sleeve, a first supporting piece and a second supporting piece, the sleeve is arranged on the tower drum in a sleeving mode, and the first supporting piece and the second supporting piece are arranged in the sleeve. One end of the first supporting piece is connected with the outer wall face of the sleeve, the other end of the first supporting piece extends to the seabed in the direction away from the tower drum, the second supporting piece is arranged at the other end of the first supporting piece and comprises a connecting piece and an inserting piece, the connecting piece is connected with the other end of the supporting piece and one end of the inserting piece, and the other end of the inserting piece extends downwards. The offshore wind turbine generator foundation suitable for wind-wave-flow-soil coupling is high in structural strength and good in stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore wind turbine, in particular to a foundation for offshore wind turbine suitable for wind-wave-flow-soil coupling. BACKGROUND

[0002] The offshore wind turbine foundation structure is a key structure in the construction of offshore wind farms, and its cost determines whether the offshore wind farm can realize grid-connected power generation and become a substitute for traditional energy. The offshore wind turbine is a new type of power generation equipment that utilizes offshore wind resources for power generation, which includes a tower head, a tower barrel and a foundation. The tower head is installed at the top end of the tower barrel, and the foundation is fixed at the bottom end of the tower barrel and arranged on the seabed to support and fix the tower barrel.

[0003] The offshore wind turbine is subjected to wind-wave-flow-soil coupling. After the construction of the offshore wind turbine foundation, the movement of water particles caused by tidal current and waves will be significantly affected, resulting in an increase in the shear stress of the water flow on the bed and an increase in the sediment carrying capacity, which causes the formation of scour pits in the local offshore wind turbine foundation, affecting the stability of the foundation. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a foundation for offshore wind turbine suitable for wind-wave-flow-soil coupling, which has high structural strength and good stability.

[0005] The foundation for offshore wind turbine suitable for wind-wave-flow-soil coupling according to the embodiments of the present application comprises:

[0006] a tower barrel extending in the up-down direction, the lower end of the tower barrel being located on the seabed;

[0007] a support assembly comprising a sleeve, a first support member and a second support member, the sleeve being sleeved on the tower barrel, one end of the first support member being connected to the outer wall surface of the sleeve, the other end of the first support member extending towards the direction away from the tower barrel to the seabed, the second support member being arranged at the other end of the first support member, and the second support member comprising a connecting member and a plug, the connecting member connecting the other end of the support member and one end of the plug, the other end of the plug extending downward.

[0008] The foundation for offshore wind turbine suitable for wind-wave-flow-soil coupling according to the embodiments of the present application has high structural strength and good stability, and the first support member and the second support member improve the stress performance of the tower barrel and the stability of the foundation for offshore wind turbine suitable for wind-wave-flow-soil coupling according to the embodiments of the present application.

[0009] In some embodiments, the offshore wind turbine foundation suitable for wind-wave-current-soil coupling further comprises a limiting piece, which is arranged on the sleeve and arranged around the circumference of the sleeve, and one end of the first support piece is connected to the outer wall surface of the sleeve and the bottom surface of the limiting piece.

[0010] In some embodiments, the offshore wind turbine foundation suitable for wind-wave-current-soil coupling further comprises a reinforcing piece, one end of which is connected to the outer wall surface of the tower drum, and the other end of which extends upwards and away from the tower drum to the side surface of the first support piece adjacent to the tower drum, and the other end of the reinforcing piece is connected to the first support piece.

[0011] In some embodiments, the support assembly further comprises a third support piece, which is arranged at the lower end of the tower drum, and the cross-sectional area of the third support piece is greater than the cross-sectional area of the tower drum.

[0012] In some embodiments, the first support piece is a plurality of first support pieces, which are arranged at intervals around the circumference of the sleeve, the second support piece is a plurality of second support pieces, which correspond one-to-one to the plurality of first support pieces, and the reinforcing piece is a plurality of reinforcing pieces, which correspond one-to-one to the plurality of first support pieces. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of an offshore wind turbine foundation suitable for wind-wave-current-soil coupling according to an embodiment of the present application.

[0014] Reference signs: 1, tower drum; 2, support assembly; 21, sleeve; 22, first support piece; 23, second support piece; 231, connecting piece; 232, plug-in piece; 24, third support piece; 3, limiting piece; 4, reinforcing piece. DETAILED DESCRIPTION

[0015] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0016] As Figure 1 shown, the offshore wind turbine foundation suitable for wind-wave-current-soil coupling according to an embodiment of the present application comprises a tower drum 1 and a support assembly 2. The tower drum 1 extends in the up-down direction, and the lower end of the tower drum 1 is located on the seabed.

[0017] The support assembly 2 comprises a sleeve 21, a first support piece 22 and a second support piece 23, the sleeve 21 is sleeved on the tower drum 1, one end of the first support piece 22 is connected to the outer wall surface of the tower drum 1, and the other end of the first support piece 22 is connected to the bottom surface of the sleeve 21. Figure 1The other end of the first support 22 is connected with the outer wall surface of the sleeve 21, and the other end of the first support 22 (such as Figure 1 The other end of the first support 22 is connected with the outer wall surface of the sleeve 21, and the other end of the first support 22 (such as Figure 1 The other end of the first support 22 is connected with the outer wall surface of the sleeve 21, and the other end of the first support 22 (such as Figure 1 The other end of the first support 22 is connected with the outer wall surface of the sleeve 21, and the other end of the first support 22 (such as

[0018] The other end of the first support 22 is connected with the outer wall surface of the sleeve 21, and the other end of the first support 22 (such as

[0019] In some embodiments, the first support 22 is a plurality of, and the plurality of first supports 22 are arranged around the circumference of the sleeve 21. The second support 23 is a plurality of, and the plurality of second supports 23 correspond to the plurality of first supports 22 one by one. The reinforcing member 4 is a plurality of, and the plurality of reinforcing members 4 correspond to the plurality of first supports 22 one by one.

[0020] Specifically, the first support 22, the second support 23 and the reinforcing member 4 are a plurality of, which further strengthens the structural strength of the tower 1, improves the support effect of the support assembly 2 on the tower 1, and ensures the stability of the offshore installation of the tower 1 of the offshore wind turbine foundation suitable for wind-wave-flow-soil coupling.

[0021] In some embodiments, the offshore wind turbine foundation suitable for wind-wave-flow-soil coupling further comprises a limiting member 3, which is arranged on the sleeve 21 and arranged around the circumference of the sleeve 21. One end of the first support 22 is connected with the outer wall surface of the sleeve 21 and the bottom surface of the limiting member 3.

[0022] Specifically, the limiting member 3 is fixedly arranged on the sleeve 21 and arranged around the circumference of the sleeve 21. The upper end of the first support 22 abuts against the bottom surface of the limiting member 3 and is fixedly connected with the bottom surface of the limiting member 3 and the outer wall surface of the sleeve 21, so that the limiting member 3 can further strengthen the connection between the upper end of the first support 22 and the sleeve 21 when the first support 22 supports the tower 1, and the upper end of the first support 22 is not easy to be separated from the sleeve 21 when the first support 22 supports the tower 1 for a long time.

[0023] In some embodiments, the offshore wind turbine foundation suitable for wind-wave-flow-soil coupling further comprises a reinforcing member 4, one end of the reinforcing member 4 (such asFigure 1 The lower end of the reinforcing member 4 is connected to the outer wall surface of the tower drum 1, and the other end of the reinforcing member 4 (as shown in the upper end of the reinforcing member 4) extends upward and away from the tower drum 1 to the side surface of the first support member 22 adjacent to the tower drum 1, and the other end of the reinforcing member 4 is connected to the first support member 22. Figure 1 The lower end of the reinforcing member 4 is connected to the outer wall surface of the tower drum 1, and the other end of the reinforcing member 4 (as shown in the upper end of the reinforcing member 4) extends upward and away from the tower drum 1 to the side surface of the first support member 22 adjacent to the tower drum 1, and the other end of the reinforcing member 4 is connected to the first support member 22.

[0024] Specifically, the reinforcing member 4, the tower drum 1 and the first support member 22 can constitute a triangle, and the triangle has stability, so that the reinforcing member 4 can further strengthen the structural strength of the tower drum 1, so that the offshore wind turbine tower 1 of the embodiment of the application suitable for wind-wave-current-soil coupling is more stable in offshore installation.

[0025] In some embodiments, the support assembly 2 further comprises a third support member 24 arranged at the lower end of the tower drum 1, and the cross-sectional area of the third support member 24 is greater than the cross-sectional area of the tower drum 1.

[0026] Specifically, the arrangement of the third support member 24 can increase the contact area of the lower end of the tower drum 1 with the seabed soil, thereby improving the uplift resistance of the tower drum 1 and the overall stability of the offshore wind turbine foundation suitable for wind-wave-current-soil coupling.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of 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. "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.

[0031] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A foundation for offshore wind turbines suitable for wind-wave-current-soil coupling, characterized in that, include: Tower (1), the tower (1) extends in the vertical direction, and the lower end of the tower (1) is located on the seabed; The support assembly (2) includes a sleeve (21), a first support member (22), and a second support member (23). The sleeve (21) is fitted onto the tower (1). One end of the first support member (22) is connected to the outer wall of the sleeve (21), and the other end of the first support member (22) extends toward the seabed in a direction away from the tower (1). The second support member (23) is located at the other end of the first support member (22), and the second support member (23) includes a connector (231) and a plug (232). The connector (231) connects the other end of the support member and one end of the plug (232), and the other end of the plug (232) extends downward.

2. The offshore wind turbine foundation suitable for wind-wave-current-soil coupling as described in claim 1, characterized in that, It also includes a limiting member (3), which is provided on the sleeve (21) and arranged around the circumference of the sleeve (21). One end of the first support member (22) is connected to the outer wall surface of the sleeve (21) and the bottom surface of the limiting member (3).

3. The offshore wind turbine foundation suitable for wind-wave-current-soil coupling as described in claim 1, characterized in that, It also includes a reinforcing member (4), one end of which is connected to the outer wall of the tower (1), and the other end of which extends upward and toward the side of the first support member (22) adjacent to the tower (1) in a direction away from the tower (1), and the other end of which is connected to the first support member (22).

4. The offshore wind turbine foundation suitable for wind-wave-current-soil coupling as described in claim 1, characterized in that, The support assembly (2) further includes a third support member (24), which is located at the lower end of the tower (1) and has a cross-sectional area larger than that of the tower (1).

5. The offshore wind turbine foundation suitable for wind-wave-current-soil coupling as described in claim 3, characterized in that, There are multiple first support members (22), and the multiple first support members (22) are arranged circumferentially around the sleeve (21). There are multiple second support members (23), and the multiple second support members (23) correspond one-to-one with the multiple first support members (22). There are multiple reinforcing members (4), and the multiple reinforcing members (4) correspond one-to-one with the multiple first support members (22).

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