Concrete tower sections, wind turbine hybrid towers, and wind turbine generator sets

Abstract

This utility model provides a concrete tower section, a wind power hybrid tower, and a wind turbine generator set. The concrete tower section includes: a concrete body having an outer wall surface, an inner wall surface, and upper and lower end surfaces opposite each other along the axial direction of the concrete body, the concrete body being divided into an upper part, a middle part, and a lower part along the axial direction; an outer steel sleeve and an inner steel sleeve, the outer steel sleeve covering the outer wall surface of the upper and lower parts of the concrete body along the axial direction, and the inner steel sleeve covering the inner wall surface of the upper and lower parts of the concrete body along the axial direction; perforations and prestressing tendons, the perforations passing through the concrete body along the axial direction, and the prestressing tendons being disposed within the perforations. The concrete tower section according to this utility model has improved tensile strength and shear strength.

Description

Technical Field

[0001] This disclosure relates to the field of wind power generation technology, and more specifically, to a concrete tower section, a wind power hybrid tower, and a wind turbine generator set. Background Technology

[0002] Currently, offshore wind turbine towers are still traditional steel cylindrical towers. These towers consist of sections made up of steel cylinders and steel flanges, which are connected on-site using high-strength bolts. Each section is welded from cylinder segments of varying thicknesses. However, as offshore wind power expands into deeper waters, the weight of these steel cylindrical towers is increasing, leading to higher costs.

[0003] Concrete towers, by replacing steel with lower-cost concrete, can effectively reduce the cost of traditional steel towers. However, the tensile and shear strengths of concrete towers are significantly lower than those of steel towers, which may lead to problems with the effective transfer of loads. Furthermore, the need for prestressing tendons in concrete tower assembly results in excessively long assembly times, failing to meet the limited lifting window at sea, thus severely restricting the application of concrete towers at sea. Utility Model Content

[0004] One objective of this invention is to provide a concrete tower section that can improve tensile strength and shear strength.

[0005] Another objective of this invention is to provide a concrete tower section that can effectively transfer loads between adjacent concrete sections.

[0006] Another objective of this invention is to provide a concrete tower section that can be rapidly assembled.

[0007] According to one aspect of the present invention, a concrete tower section is provided, the concrete tower section comprising: a concrete body having an outer wall surface, an inner wall surface, and an upper end surface and a lower end surface opposite to each other in the axial direction of the concrete body, the concrete body being divided into an upper part, a middle part, and a lower part in the axial direction; an outer steel sleeve and an inner steel sleeve, the outer steel sleeve covering the outer wall surface of the upper and lower parts of the concrete body in the axial direction, the inner steel sleeve covering the inner wall surface of the upper and lower parts of the concrete body in the axial direction; a perforation and a prestressing tendon, the perforation passing through the concrete body in the axial direction, the prestressing tendon being disposed in the perforation.

[0008] Optionally, the upper and lower parts of the concrete body account for 1 / 20 to 1 / 10 of the total height of the concrete body.

[0009] Optionally, the outer steel sleeve and the inner steel sleeve respectively cover the outer wall surface and the inner wall surface of the middle part of the concrete body in the axial direction.

[0010] Optionally, the concrete tower section further includes fasteners that pass through the concrete body and connect the outer steel sleeve and the inner steel sleeve to each other.

[0011] Optionally, the concrete tower section includes a plurality of fasteners that are separated from each other along the axial direction and circumferentially separated from each other along the concrete body.

[0012] Optionally, the concrete tower section includes multiple prestressed tendon groups, each prestressed tendon group including multiple prestressed tendons, the multiple prestressed tendon groups being spaced apart from each other along the circumferential direction of the concrete body, and the fastener passing between two adjacent prestressed tendon groups and connecting the outer steel sleeve and the inner steel sleeve to each other.

[0013] Optionally, the concrete tower section further includes: a first flange, disposed on the lower end face of the concrete body and fixed to the outer steel sleeve and the inner steel sleeve, the lower part of the first flange having a first countersunk hole, the first anchor being disposed in the first countersunk hole, the lower end of the prestressing tendon passing through the first flange and anchored to the first anchor; a second flange, disposed on the upper end face of the concrete body and fixed to the outer steel sleeve and the inner steel sleeve, the upper part of the second flange having a second countersunk hole, the second anchor being disposed in the second countersunk hole, the upper end of the prestressing tendon passing through the second flange and anchored to the second anchor.

[0014] According to another aspect of the present invention, a wind power hybrid tower is provided, the wind power hybrid tower comprising the concrete tower section as described above.

[0015] Optionally, the wind power hybrid tower includes at least two concrete tower sections spliced ​​together without including a steel tower section, or the wind power hybrid tower includes a steel tower section disposed on the uppermost concrete tower section of the at least one concrete tower section.

[0016] According to another aspect of the present invention, a wind turbine generator set is provided, the wind turbine generator set including the wind power hybrid tower as described above.

[0017] By setting up a combined structure of inner and outer steel sleeves and concrete main body, the tensile and shear strength of concrete tower sections can be significantly improved while reducing costs, and load can be effectively transferred between adjacent concrete sections.

[0018] By further optimizing the fasteners, load transfer between adjacent concrete sections can be achieved more effectively.

[0019] By installing flanges with countersunk holes at both ends of the concrete main body, the prestressed tendons can be pre-tensioned to form concrete tower sections, which can greatly reduce the assembly time of wind power hybrid towers and thus adapt to the limited lifting window at sea. Attached Figure Description

[0020] Figure 1 This is a top view of a concrete tower section according to an embodiment of the present invention.

[0021] Figure 2 It is along Figure 1 The cross-sectional view taken from line AA in the diagram.

[0022] Figure 3 yes Figure 2 An enlarged view of part I.

[0023] Figure 4 The concrete tower section according to a variation of this utility model is... Figure 2 The cross-sectional view corresponding to the cross-sectional view.

[0024] Figure 5 The concrete tower section according to a variation of this utility model is... Figure 2 The cross-sectional view corresponding to the cross-sectional view.

[0025] Figure 6 This is a cross-sectional view of a portion of a wind power hybrid tower according to an embodiment of the present invention.

[0026] Marker Names: 10 Concrete Main Body; 100 Concrete Tower Section; 11 Outer Wall; 12 Inner Wall; 13 Upper End Face; 14 Lower End Face; 20 Outer Steel Sleeve; 200 Foundation Flange; 201 Foundation Flange Bolt Hole; 30 Inner Steel Sleeve; 40 Perforation; 50 Prestressed Tendon; 61 Fastener; 62 Bolt; 70 First Flange; 71 First Countersunk Hole; 72 First Anchor; 73 First Through Hole; 74 First Bolt Hole; 75 Flange; 80 Second Flange; 81 Second Countersunk Hole; 82 Second Anchor; 83 Second Through Hole; 84 Second Bolt Hole; 85 Flange. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] Figure 1 This is a top view of a concrete tower section according to an embodiment of the present invention. Figure 2 It is along Figure 1 The cross-sectional view taken from line AA in the diagram. Figure 3 yes Figure 2 An enlarged view of part I. Figure 4 The concrete tower section according to a variation of this utility model is... Figure 2 The cross-sectional view corresponding to the cross-sectional view. Figure 5 The concrete tower section according to a variation of this utility model is... Figure 2 The cross-sectional view corresponding to the cross-sectional view. Figure 6 This is a cross-sectional view of a portion of a wind power hybrid tower according to an embodiment of the present invention.

[0030] The following will refer to Figures 1 to 6 The present invention describes a concrete tower section according to an embodiment of the present invention and a wind power hybrid tower including the concrete tower section.

[0031] like Figure 1 and Figure 2 As shown, the concrete tower section 100 according to an embodiment of the present invention may include: a concrete body 10 having an outer wall surface 11, an inner wall surface 12, and an upper end surface 13 and a lower end surface 14 that are opposite each other in the axial direction of the concrete body 10, the concrete body 10 being divided into an upper part, a middle part, and a lower part in the axial direction; an outer steel sleeve 20 and an inner steel sleeve 30, the outer steel sleeve 20 covering the outer wall surface 11 of the upper and lower parts of the concrete body 10 in the axial direction, the inner steel sleeve 30 covering the inner wall surface 12 of the upper and lower parts of the concrete body 10 in the axial direction; a through hole 40 and a prestressing tendon 50, the through hole 40 passing through the concrete body 10 in the axial direction, the prestressing tendon 50 being disposed in the through hole 40.

[0032] According to an embodiment of the present invention, by setting an outer steel sleeve 20 covering the upper and lower outer wall surfaces of the concrete main body 10 and an inner steel sleeve 30 covering the upper and lower inner wall surfaces of the concrete main body 10, lateral constraints can be applied to the upper and lower regions of the concrete main body, so that it is in a triaxial compression state, thereby significantly improving the tensile strength and shear strength of the concrete tower section, and effectively transferring loads between adjacent concrete sections.

[0033] The concrete tower section 100 according to an embodiment of the present invention will now be described in detail.

[0034] According to an embodiment of this utility model, the concrete body 10 can be cylindrical, for example, Figure 1 and Figure 2 The diagram shows a cylindrical concrete body 10; however, the present invention is not limited thereto, and the concrete body 10 may also be a conical cylinder or a polygonal prism cylinder. The dimensions of the concrete body 10 (e.g., diameter, wall thickness, length, etc.) are not specifically limited, but can be flexibly designed according to specific application scenarios and ease of transportation.

[0035] The concrete body 10 may have an outer wall surface 11, an inner wall surface 12 that is radially opposite to the outer wall surface 11, and an upper end surface 13 and a lower end surface 14 that are axially opposite to each other. When the concrete body 10 is a cylindrical tube, the outer wall surface 11 is an outer curved surface, the inner wall surface 12 is an inner curved surface, and the upper end surface 13 and the lower end surface 14 are two circular end surfaces.

[0036] To facilitate the description of the placement of the outer steel sleeve 20 and the inner steel sleeve 30, the concrete body 10 can be divided into three regions axially: the upper, middle, and lower parts. As an example, the upper and lower parts are defined as regions occupying 1 / 20 to 1 / 10 of the total height of the concrete body 10 axially. Specifically, the upper part refers to the region extending downwards from the upper end face 13 of the concrete body 10 to 1 / 20 to 1 / 10 of its total height, and the lower part refers to the region extending upwards from the lower end face 14 of the concrete body 10 to 1 / 20 to 1 / 10 of its total height. The region of the concrete body 10 other than the upper and lower parts is called the middle part.

[0037] According to an embodiment of the present invention, the outer steel sleeve 20 covers the upper and lower outer wall surfaces 11 of the concrete main body 10 in the axial direction, and the inner steel sleeve 30 covers the upper and lower inner wall surfaces 12 of the concrete main body 10 in the axial direction. Both the outer steel sleeve 20 and the inner steel sleeve 30 can be cylindrical. The outer steel sleeve 20 can surround the upper and lower outer wall surfaces of the concrete main body 10, respectively, and the inner steel sleeve 30 can surround the upper and lower inner wall surfaces of the concrete main body 10, respectively. The wall thickness of the outer steel sleeve 20 and the inner steel sleeve 30 is not specifically limited and can be designed according to specific application scenarios. Furthermore, the outer steel sleeve 20 and the inner steel sleeve 30 can be made of any steel known in the art. When the concrete tower section according to an embodiment of the present invention is applied to an offshore wind turbine generator, the outer steel sleeve 20 and the inner steel sleeve 30 can be made of known stainless steel materials. Additionally, as an example, the axial length of the outer steel sleeve 20 and the inner steel sleeve 30 can be 1m-1.5m. However, this utility model is not limited to this, and the axial length of the outer steel sleeve 20 and the inner steel sleeve 30 can be adjusted according to the length of the concrete body 10.

[0038] According to embodiments of this utility model, by providing an outer steel sleeve 20 and an inner steel sleeve 30 at the upper and lower parts of the concrete main body 10, load transfer can be effectively achieved while simultaneously reducing costs. When the axial length of each of the outer steel sleeve 20 and the inner steel sleeve 30 is less than 1 / 20 of the total height of the concrete main body 10, the increase in tensile and shear strength may be insufficient, and load transfer between adjacent concrete sections may not be effective. When the axial length of each of the outer steel sleeve 20 and the inner steel sleeve 30 is greater than 1 / 10 of the total height of the concrete main body 10, the cost may increase slightly, but it will still be lower than the cost of a steel tower.

[0039] Therefore, according to embodiments of this utility model, the outer steel sleeve 20 and the inner steel sleeve 30 can also completely cover the concrete body 10. For example, as Figure 5 As shown, the outer steel sleeve 20 and the inner steel sleeve 30 can also cover the outer wall surface 11 and the inner wall surface 12 of the middle part of the concrete main body 10 in the axial direction, respectively, to further improve the tensile strength and shear strength of the concrete tower section. According to an embodiment of this utility model, such as... Figure 2 As shown, the concrete tower section 100 may further include a fastener 61. The fastener 61 may pass through the concrete body 10 and connect the outer steel sleeve 20 and the inner steel sleeve 30 to each other. As an example, the fastener 61 may pass radially through the concrete body 10 and connect the outer steel sleeve 20 and the inner steel sleeve 30 to each other. As an example, the fastener 61 may be a stud; however, the present invention is not limited thereto.

[0040] According to an embodiment of the present invention, the fastener 61 can be fixed on the outer steel sleeve 20 and the inner steel sleeve 30 to anchor the outer steel sleeve 20 and the inner steel sleeve 30 together with the concrete body 10. Therefore, the load can be transferred to the concrete body 10 through the synergistic effect of the outer steel sleeve 20, the inner steel sleeve 30 and the fastener 61.

[0041] As an example, the concrete tower section 100 may include a plurality of fasteners 61, the plurality of fasteners 61 being axially separated from each other (e.g., Figure 2 (as shown) and separated from each other along the circumference of the concrete body 10 (as shown) Figure 1 As shown), to achieve local stability design and reliable concrete anchoring of the outer steel sleeve 20 and inner steel sleeve 30. That is, multiple fasteners 61 can be arranged at the same height in the axial direction, spaced apart from each other circumferentially and radially distributed. The circumferential distance between the multiple fasteners 61 (i.e., the distance from the center of one fastener 61 to the center of another fastener 61 in the circumferential direction) is not limited, for example, it can be from about 120 mm to about 180 mm. Additionally, as... Figure 2 As shown, the spacing between adjacent fasteners 61 in the axial direction is not limited, for example, it can be from about 120 mm to about 180 mm.

[0042] Figure 5 This illustration shows a case where the outer steel sleeve 20 and the inner steel sleeve 30 cover the entire concrete body 10. In this case, the fastener 61 can be used as follows: Figure 5 As shown, it can be provided only in the upper and lower parts of the concrete body 10 in the axial direction, or it can be provided in the entire area of ​​the concrete body 10 (i.e., the upper, lower and middle parts) in the axial direction.

[0043] According to embodiments of the present invention, such as Figure 2 As shown, the concrete tower section 100 may include perforations 40 and prestressing tendons 50. Perforations 40 may also be called prestressing ducts, and prestressing tendons 50 may also be called prestressed steel strands. Perforations 40 can pass axially through the concrete body 10, and prestressing tendons 50 can be placed within the perforations 40. By setting prestressed tendons 50, the entire cross-section of the concrete is compressed, thus resisting external loads.

[0044] According to embodiments of the present invention, such as Figure 1 As shown, the concrete tower section 100 may include multiple prestressed tendon groups, each prestressed tendon group may include multiple prestressed tendons 50, and the multiple prestressed tendon groups may be spaced apart from each other circumferentially along the concrete body 10, for example, they may be evenly spaced circumferentially. Additionally, as... Figure 1 As shown, the fastener 61 used to connect the outer steel sleeve 20 and the inner steel sleeve 30 can pass between two adjacent prestressing tendon groups, so there is no interference between the fastener 61 and the prestressing tendon group.

[0045] According to an embodiment of this utility model, the prestressing tendon 50 can be tensioned using a first anchor 72 and a second anchor 82. Specifically, the first anchor 72 can be a fixed-end anchor, and the second anchor 82 can be a tensioning-end anchor. After the prestressing tendon 50 is passed through the perforation 40 and fixed to the first anchor 72 and the second anchor 82, the upper end of the prestressing tendon 50 can be tensioned. Although it has been described above that the first anchor 72 can be a fixed-end anchor and the second anchor 82 can be a tensioning-end anchor, the first anchor 72 can also be used as a tensioning-end anchor and the second anchor 82 as a fixed-end anchor. Furthermore, according to an embodiment of this utility model, after tensioning the prestressing tendon 50, high-strength grout can be injected into the perforation 40 to achieve the dual functions of corrosion protection and preventing tensile loss of the prestressing tendon 50. High-strength grout is an existing material and will not be described in detail here.

[0046] According to an embodiment of the present invention, the concrete tower section 100 may include a first flange 70 and a second flange 80. The first flange 70 may be disposed on the lower end face 14 of the concrete body 10 and fixed to the outer steel sleeve 20 and the inner steel sleeve 30. According to an embodiment of the present invention, a first countersunk hole 71 may be formed at the lower part of the first flange 70, and a first anchor 72 may be disposed in the first countersunk hole 71. In addition, the first flange 70 may be provided with a first through hole 73 communicating with the first countersunk hole 71, and the lower end of the prestressing tendon 50 may pass through the first through hole 73 and be anchored to the first anchor 72.

[0047] The second flange 80 can be disposed on the upper end face 13 of the concrete body 10 and fixed to the outer steel sleeve 20 and the inner steel sleeve 30. According to an embodiment of the present invention, a second countersunk hole 81 can be opened in the upper part of the second flange 80, and a second anchor 82 can be disposed in the second countersunk hole 81. In addition, the second flange 80 can be provided with a second through hole 83 communicating with the second countersunk hole 81, and the upper end of the prestressing tendon 50 can pass through the second through hole 83 and be anchored to the second anchor 82.

[0048] According to an embodiment of this utility model, the first flange 70 and the second flange 80 can be T-type flanges. For example... Figure 2 As shown, the outer steel sleeve 20 and the inner steel sleeve 30 can be directly coupled to the upper end face of the first flange 70 and the lower end face of the second flange 80. However, this utility model is not limited to this. For example, as Figure 4 As shown, the outer steel sleeve 20 and the inner steel sleeve 30 can be joined to a flange 75 protruding from the upper end face of the first flange 70 and a flange 85 protruding from the lower end face of the second flange 80.

[0049] Two rings (or two rows) of first bolt holes 74 are arranged circumferentially on the radially outer and radially inner sides of the first flange 70. Similarly, two rings (or two rows) of second bolt holes 84 are arranged circumferentially on the radially outer and radially inner sides of the second flange 80. By arranging two rows of bolt holes on each of the first flange 70 and the second flange 80, high load-bearing capacity can be achieved.

[0050] According to embodiments of this utility model, an effective load transfer can be achieved between adjacent concrete sections through a composite structural design of flanges at both ends of the concrete body, inner and outer steel sleeves, and fasteners (e.g., studs). Furthermore, the countersunk flange design allows for pre-tensioning of the prestressing tendons, thereby improving assembly efficiency.

[0051] When a wind power hybrid tower is formed using a concrete tower section 100, the concrete tower section 100 can be connected to an adjacent concrete tower section or to the foundation via a first flange 70 and a second flange 80.

[0052] For example, such as Figure 6As shown, the second flange 80 of a concrete tower section 100 and the first flange 70 of the adjacent concrete tower section 100 can be connected to each other by bolts passing through the second bolt hole 84 of the second flange 80 and the first bolt hole 74 of the first flange 70.

[0053] Additionally, a wind turbine hybrid tower may also include a foundation (not shown) and a foundation flange 200 (such as) mounted on top of the foundation. Figure 2 (As shown). The base flange 200 can also be a T-flange, similar to the first flange 70. Two rings of base flange bolt holes 201 can be arranged circumferentially on the radially outer and radially inner sides of the base flange 200. When the concrete tower section 100 is the lowest tower section of the wind turbine tower, the bolts 62 can pass through the first bolt holes 74 and the base flange bolt holes 201 to connect the first flange 70 to the base flange 200 (as shown). Figure 2 As shown), the concrete tower section 100 can then be connected to the foundation.

[0054] According to an embodiment of the present invention, the concrete tower section 100 can be manufactured in the following ways; however, the concrete tower section 100 of the present invention is not limited thereto.

[0055] Using the outer steel sleeve 20 and inner steel sleeve 30 connected to each other by fastener 61 as a mold (as in... Figure 2 If the outer steel sleeve 20 and the inner steel sleeve 30 are not completely covered, a temporary fixed mold can be added to pour concrete and reserve prestressed tendon ducts (i.e., perforation 40) to form the concrete body 10.

[0056] Then, a second flange 80 and a first flange 70 are fixed to the upper end face 13 and lower end face 14 of the concrete body 10, respectively. The prestressing tendon 50 is passed through the through hole 40 and anchored to the first anchorage 72, and the upper end of the prestressing tendon 50 is fixed to the second anchorage 82. In addition, tension can be applied to the prestressing tendon 50 to form the concrete tower section 100.

[0057] When using the aforementioned concrete tower section 100 to form a wind power hybrid tower, the concrete tower section 100 is transported to the installation point and then hoisted for construction.

[0058] According to this utility model, by setting flanges with countersunk holes at the upper and lower ends of the concrete body 10, the prestressed tendons can be prestressed to form the concrete tower section 100 before hoisting construction. During assembly, multiple concrete tower sections 100 can be quickly assembled through the flanges on the upper and lower sides of the concrete tower section 100 without the need for prestressing tensioning or other operations on site. Therefore, the assembly time of wind power hybrid towers can be greatly reduced, thus adapting to the limited hoisting window at sea.

[0059] According to embodiments of this utility model, the wind power hybrid tower may not include steel cylinder sections; that is, it is entirely formed by splicing together concrete tower cylinder sections 100. For example, it may be formed by splicing together at least two concrete tower cylinder sections 100. For example, it may be... Figure 6 The nacelle of the wind turbine is installed directly above the uppermost concrete tower section 100.

[0060] However, this invention is not limited to this. The wind turbine hybrid tower may also include a steel cylinder section mounted on the uppermost concrete tower section 100. The steel cylinder section can be connected to the second flange of the lower concrete tower section 100 via a transition flange, and the connection method is not specifically limited. Furthermore, the proportion of the steel cylinder section to the total height of the wind turbine hybrid tower is not specifically limited. To minimize costs, the proportion of the steel cylinder section should be minimized.

[0061] According to embodiments of this utility model, a wind turbine generator set including the aforementioned wind power hybrid tower can also be provided. The above description pertains to offshore wind turbine generator sets; however, this utility model is not limited thereto. That is, the concrete tower section according to this utility model can also be applied to onshore wind turbine generator sets.

[0062] The concrete tower section and wind power hybrid tower according to the embodiments of this utility model can achieve beneficial technical effects, not limited to those described below.

[0063] By setting up a combined structure of inner and outer steel sleeves and concrete main body, the tensile and shear strength of concrete tower sections can be significantly improved while reducing costs, and load can be effectively transferred between adjacent concrete sections.

[0064] By further optimizing the fasteners, load transfer between adjacent concrete sections can be achieved more effectively.

[0065] By installing flanges with countersunk holes at both ends of the concrete main body, the prestressed tendons can be pre-tensioned to form concrete tower sections, which can greatly reduce the assembly time of wind power hybrid towers and thus adapt to the limited lifting window at sea.

[0066] Although exemplary embodiments of the present invention have been specifically described with reference to exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made thereto without departing from the spirit and scope of the present invention as defined by the claims.

Claims

1. A concrete tower section, characterized in that The concrete tower section (100) includes: The concrete body (10) has an outer wall surface (11), an inner wall surface (12), and an upper end surface (13) and a lower end surface (14) that are opposite each other in the axial direction of the concrete body (10), the concrete body (10) being divided into an upper part, a middle part and a lower part in the axial direction; Outer steel sleeve (20) and inner steel sleeve (30), the outer steel sleeve (20) covering the outer wall surface (11) of the upper and lower parts of the concrete body (10) in the axial direction, and the inner steel sleeve (30) covering the inner wall surface (12) of the upper and lower parts of the concrete body (10) in the axial direction. A perforation (40) and a prestressing tendon (50) are provided in the perforation (40), the perforation (40) passing through the concrete body (10) along the axial direction, and the prestressing tendon (50) being disposed within the perforation (40).

2. The concrete tower section of claim 1, wherein, The upper and lower parts of the concrete body (10) account for 1 / 20 to 1 / 10 of the total height of the concrete body (10).

3. The concrete tower section of claim 1, wherein, The outer steel sleeve (20) and the inner steel sleeve (30) respectively cover the outer wall surface (11) and the inner wall surface (12) of the middle part of the concrete body (10) in the axial direction.

4. The concrete tower section according to claim 1, characterized in that, The concrete tower section (100) also includes: Fastener (61) passes through the concrete body (10) and connects the outer steel sleeve (20) and the inner steel sleeve (30) to each other.

5. The concrete tower section according to claim 4, characterized in that, The concrete tower section (100) includes a plurality of fasteners (61) that are separated from each other along the axial direction and circumferentially separated from each other along the concrete body (10).

6. The concrete tower section of claim 5, wherein, The concrete tower section (100) includes multiple prestressed tendon groups, each prestressed tendon group including multiple prestressed tendons (50), the multiple prestressed tendon groups being spaced apart from each other along the circumference of the concrete body (10), and the fastener (61) passing between two adjacent prestressed tendon groups and connecting the outer steel sleeve (20) and the inner steel sleeve (30) to each other.

7. The concrete tower section of claim 1, wherein, The concrete tower section (100) also includes: A first flange (70) is disposed on the lower end face (14) of the concrete body (10) and fixed to the outer steel sleeve (20) and the inner steel sleeve (30). A first countersunk hole (71) is provided at the lower part of the first flange (70). A first anchor (72) is provided in the first countersunk hole (71). The lower end of the prestressed tendon (50) passes through the first flange (70) and is anchored to the first anchor (72). The second flange (80) is disposed on the upper end face (13) of the concrete body (10) and fixed to the outer steel sleeve (20) and the inner steel sleeve (30). A second countersunk hole (81) is provided on the upper part of the second flange (80). A second anchor (82) is provided in the second countersunk hole (81). The upper end of the prestressed tendon (50) passes through the second flange (80) and is anchored to the second anchor (82).

8. A wind power hybrid tower, characterized in that, The wind power hybrid tower includes at least one concrete tower section (100) according to any one of claims 1 to 7.

9. The hybrid wind tower according to claim 8, wherein, The wind power hybrid tower includes at least two of the concrete tower sections (100) spliced ​​together without including a steel section, or the wind power hybrid tower includes a steel section disposed on the uppermost concrete tower section (100) of the at least one concrete tower section (100).

10. A wind turbine generator set, characterized in that, The wind turbine generator set includes the wind power hybrid tower according to claim 8 or 9.

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