Wind power tower drum and wind power generation device

Abstract

The utility model relates to the technical field of wind power devices, and discloses a wind power tower drum and a wind power generation device, and the wind power tower drum comprises a plurality of arc-shaped plates, a plurality of connecting plates and a plurality of connecting pieces. Specifically, the multiple arc-shaped plates can be connected to form a cylindrical structure, and each arc-shaped plate is provided with a first end and a second end in the first direction; the multiple connecting plates are arranged on the concave side walls of the multiple arc-shaped plates in a one-to-one correspondence mode, all the connecting plates extend in the first direction and protrude out of the second ends of the arc-shaped plates, the second ends of the arc-shaped plates abut against the first ends of the adjacent arc-shaped plates in the first direction, and the parts, protruding out of the second ends of the arc-shaped plates, of the connecting plates abut against the second ends of the arc-shaped plates. The concave side walls abut against the concave side walls of the adjacent arc-shaped plates in the first direction; the plurality of connecting pieces are connected with the plurality of connecting plates and the plurality of arc-shaped plates propped against the connecting plates; wherein the first direction is parallel to the axial direction of the cylindrical structure. According to the wind power tower drum and the wind power generation device, the problems that dislocation is prone to occurring in the horizontal direction, and the safety is reduced are solved or improved.

Description

Technical Field

[0001] This application relates to the field of wind power equipment technology, specifically to wind turbine towers and wind power generation devices. Background Technology

[0002] With the increasing size of wind turbine units, the structure of wind turbine towers has evolved from pure steel towers to steel-concrete towers to adapt to changes in the installation height of wind blades.

[0003] In related technologies, wind turbine towers typically consist of a lower concrete cylinder and an upper steel cylinder, with the concrete cylinder connected to the steel cylinder via a coupling. The concrete cylinder comprises multiple cylinder segments arranged along its axial direction, each segment including multiple tower sections, which are connected one by one to form a cylindrical structure. The multiple tower sections are secured by pre-tension applied by vertical tie rods.

[0004] As the service life of wind turbine towers increases, the structure becomes more prone to misalignment under horizontal loads, leading to reduced safety. Utility Model Content

[0005] In view of this, this application provides wind turbine towers and wind power generation devices to solve or improve the problem of easy misalignment in the horizontal direction and reduced safety.

[0006] In a first aspect, this application provides a wind turbine tower, comprising multiple arc-shaped plates, wherein the multiple arc-shaped plates are connected to form a cylindrical structure, and each of the arc-shaped plates is provided with a first end and a second end along a first direction;

[0007] Multiple connecting plates are provided one-to-one on the concave sidewalls of multiple arc-shaped plates. Each connecting plate extends along the first direction and protrudes from the second end of the arc-shaped plate. The second end of the arc-shaped plate abuts against the first end of the arc-shaped plate adjacent to it along the first direction. The portion of the connecting plate protruding from the second end of the arc-shaped plate abuts against the concave sidewall of the arc-shaped plate adjacent to it along the first direction.

[0008] Multiple connectors connect multiple connecting plates and multiple arc-shaped plates that abut against them;

[0009] The first direction is parallel to the axial direction of the cylindrical structure.

[0010] In this embodiment, multiple arc-shaped plates are spliced ​​circumferentially to form a cylindrical structure, and multiple arc-shaped plates are spliced ​​along a first direction to increase the height of the cylindrical structure. A connecting plate is connected to the concave side of the arc-shaped plates, and the connecting plate protrudes from the second end of the arc-shaped plates along the first direction, such that when two arc-shaped plates arranged along the first direction are installed, the first end of the first arc-shaped plate abuts against the second end of the second arc-shaped plate, transmitting the load in the axial direction of the cylindrical structure. Furthermore, the concave sidewall of the first arc-shaped plate abuts against the portion of the connecting plate protruding from the second end of the second arc-shaped plate. The first arc-shaped plate is connected to the connecting plate by a connector, improving the resistance to horizontal loads. At the same time, the connecting plate can increase the thickness of the cylindrical structure in its radial direction, further improving the resistance to horizontal loads, preventing the arc-shaped plates from misaligning in the horizontal direction, and improving safety.

[0011] The portion of the connecting plate protruding from the second end of the arc-shaped plate abuts against the concave sidewall of the arc-shaped plate adjacent to it along the first direction, which can improve the positioning effect when installing the arc-shaped plate along the first direction, increase the installation speed, and shorten the construction time.

[0012] In one optional embodiment, the connecting plate has an arc-shaped structure, and the connecting plate is provided with a first segment and a second segment along the first direction. The first segment is fixedly connected to the concave sidewall of the arc-shaped plate, and the convex sidewall of the second segment abuts against the concave sidewall of the arc-shaped plate adjacent to it along the first direction.

[0013] In one alternative implementation, two adjacent arcuate plates are staggered along the first direction.

[0014] In one optional embodiment, the connecting plate is provided with at least two first connecting holes, and the two arc-shaped plates adjacent to the connecting plate along the first direction are each provided with at least two second connecting holes. The second connecting holes on the two arc-shaped plates can be arranged corresponding to the two first connecting holes. The connector passes through the corresponding first connecting holes and second connecting holes to fix the connecting plate and the arc-shaped plates.

[0015] In one optional embodiment, the connecting plate has the first connecting hole in the radial direction of the cylindrical structure; the arc-shaped plate has the second connecting hole in the radial direction of the cylindrical structure.

[0016] In one alternative embodiment, a sealant is provided at the joint between two adjacent arc-shaped plates;

[0017] And / or, a sealant is provided at the connection between adjacent connecting plates and the arc-shaped plate.

[0018] In one alternative implementation, the convex sidewalls of two adjacent arcuate plates are flush along the first direction.

[0019] In one alternative embodiment, the connecting plate and the arcuate plate have the same curvature along the circumference of the cylindrical structure.

[0020] In one alternative embodiment, the arc-shaped plate and the connecting plate are integrally formed.

[0021] Secondly, this application also provides a wind power generation device, including: the wind turbine tower. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is an axial view of an arc-shaped plate, a connecting plate, and a connector in a wind turbine tower according to an embodiment of this application;

[0024] Figure 2 for Figure 1 The main view;

[0025] Figure 3 This is a structural schematic diagram of an arc-shaped plate, a connecting plate, and a connector in a wind turbine tower according to an embodiment of this application.

[0026] Figure 4 This is a longitudinal sectional view of a wind turbine tower according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Curved plate; 101. First end; 102. Second end; 2. Connecting plate; 201. First segment; 202. Second segment; 3. Connector; 4. First connecting hole; X. First direction. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "upper," "lower," "horizontal," "inner," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] With the increasing size of wind turbine units, the structure of wind turbine towers has evolved from pure steel towers to steel-concrete towers to adapt to changes in the installation height of wind blades.

[0033] In related technologies, wind turbine towers typically consist of a lower concrete cylinder and an upper steel cylinder, with the concrete cylinder connected to the steel cylinder via a coupling. The concrete cylinder comprises multiple cylinder segments arranged along its axial direction, each segment including multiple tower sections, which are connected one by one to form a cylindrical structure. The multiple tower sections are secured by pre-tension applied by vertical tie rods.

[0034] As wind turbine towers age, they become more susceptible to misalignment under horizontal loads, leading to reduced safety. To address this, this application provides a wind turbine tower and a wind power generation device that solve or improve upon the problem of horizontal misalignment and reduced safety.

[0035] The following is combined Figures 1 to 4 This describes an embodiment of the present application.

[0036] According to an embodiment of this application, a wind turbine tower is provided, comprising: a plurality of arc-shaped plates 1, a plurality of connecting plates 2, and a plurality of connecting members 3.

[0037] Specifically, such as Figure 1 and Figure 4 As shown, multiple arc-shaped plates 1 can be connected to form a cylindrical structure, and each arc-shaped plate 1 is provided with a first end 101 and a second end 102 along the first direction X.

[0038] Multiple connecting plates 2 are arranged one-to-one on the concave sidewalls of multiple arc-shaped plates 1. Each connecting plate 2 extends along the first direction X and protrudes from the second end 102 of the arc-shaped plate 1. The second end 102 of the arc-shaped plate 1 abuts against the first end 101 of the arc-shaped plate 1 adjacent along the first direction X. The part of the connecting plate 2 protruding from the second end 102 of the arc-shaped plate 1 abuts against the concave sidewall of the arc-shaped plate 1 adjacent along the first direction X.

[0039] Multiple connectors 3 connect multiple connecting plates 2 and multiple arc-shaped plates 1 that abut against them;

[0040] Among them, the first direction X is parallel to the axis of the cylindrical structure.

[0041] In this embodiment, such as Figure 1 and Figure 4 As shown, multiple arc-shaped plates 1 can be spliced ​​circumferentially to form a cylindrical structure. The splicing of multiple arc-shaped plates 1 along the first direction X increases the height of the cylindrical structure. A connecting plate 2 is connected to the concave side of the arc-shaped plate 1, and the connecting plate 2 protrudes from the second end 102 of the arc-shaped plate 1 along the first direction X. This ensures that when two arc-shaped plates 1 arranged along the first direction X are installed, the first end 101 of the first arc-shaped plate 1 abuts against the second end 102 of the second arc-shaped plate 1, transmitting load in the axial direction of the cylindrical structure. Furthermore, the concave sidewall of the first arc-shaped plate 1 abuts against the portion of the connecting plate 2 protruding from the second end 102 of the second arc-shaped plate 1. The first arc-shaped plate 1 is connected to the connecting plate 2 via a connecting member 3, improving the resistance to horizontal loads. Simultaneously, the connecting plate 2 increases the thickness of the cylindrical structure in its radial direction, further enhancing its resistance to horizontal loads, preventing horizontal misalignment of the arc-shaped plates 1, and improving safety.

[0042] In some embodiments, such as Figure 1 and Figure 4 As shown, the portion of the connecting plate 2 protruding from the second end 102 of the arc plate 1 forms an annular step with the second end 102 of the arc plate 1. The transverse surface of the annular step is the end face of the second end 102 of the arc plate 1, and the longitudinal surface of the annular step is the side of the connecting plate 2 facing the concave side of the arc plate 1.

[0043] In some embodiments, the longitudinal surface of the annular step can position the adjacent arcuate plate 1 along the first direction X.

[0044] In some embodiments, such as Figure 1 and Figure 2As shown, multiple arc-shaped plates 1 are connected circumferentially to form a first-layer cylindrical unit. The arc-shaped plates 1 are hoisted by a hoisting mechanism and installed along the first direction X. The second-layer arc-shaped plates 1 are installed above the first-layer cylindrical unit by the hoisting mechanism. The first end 101 of the second-layer arc-shaped plates 1 abuts against the transverse surface of the annular step of the first-layer arc-shaped plates 1, and the concave side surface of the second-layer arc-shaped plates 1 abuts against the longitudinal surface of the annular step. This allows the second-layer arc-shaped plates 1 to be positioned radially in the cylindrical unit, improving installation efficiency and shortening the construction period.

[0045] In a further embodiment, the installation from the second-layer cylindrical unit to the multi-layer cylindrical unit is carried out according to the above embodiment.

[0046] In some embodiments, each layer of cylindrical unit is formed by splicing four arc-shaped plates 1 circumferentially.

[0047] In one embodiment, such as Figure 1 As shown, the connecting plate 2 has an arc-shaped structure. The connecting plate 2 is provided with a first section 201 and a second section 202 along the first direction X. The first section 201 is fixedly connected to the concave sidewall of the arc plate 1, and the convex sidewall of the second section 202 abuts against the concave sidewall of the arc plate 1 adjacent along the first direction X.

[0048] In this embodiment, such as Figure 1 As shown, the connecting plate 2 has an arc-shaped structure, which makes it easy for the first section 201 of the connecting plate 2 to connect with the concave sidewall of the arc plate 1, improving the fit between the first section 201 of the connecting plate 2 and the arc plate 1 and increasing the connection strength; the convex sidewall of the second section 202 of the connecting plate 2 abuts against the concave sidewall of the arc plate 1, resulting in better fit, improving the positioning effect and installation speed.

[0049] In some embodiments, the connecting plate 2 and the arc-shaped plate 1 can be fixedly connected by bolts or by welding.

[0050] In one embodiment, such as Figure 1 and Figure 2 As shown, along the first direction X, two adjacent arc-shaped plates 1 are staggered.

[0051] In this embodiment, such as Figure 1 and Figure 2 As shown, the staggered arrangement of two adjacent arc plates 1 can improve the connection strength between the arc plates 1, and the load of the upper cylindrical unit is distributed along the first direction X to multiple arc plates 1, thereby improving the overall firmness and stability.

[0052] In one embodiment, such as Figure 3As shown, the connecting plate 2 is provided with at least two first connecting holes 4, and the two arc-shaped plates 1 adjacent to the connecting plate 2 along the first direction X are each provided with at least two second connecting holes. The second connecting holes on the two arc-shaped plates 1 can be arranged corresponding to the two first connecting holes 4. The connecting piece 3 passes through the corresponding first connecting hole 4 and second connecting hole to fix the connecting plate 2 and the arc-shaped plate 1.

[0053] In this embodiment, such as Figure 3 As shown, two adjacent arc-shaped plates 1 are staggered along the first direction X, such that the first ends 101 of the two upper arc-shaped plates 1 simultaneously abut against the second ends 102 of the lower arc-shaped plate 1. This also causes the connecting plate 2 connected to the lower arc-shaped plate 1 to abut against the concave sidewalls of the two upper arc-shaped plates 1. The connecting plate 2 is provided with at least two first connecting holes 4, and each of the two upper arc-shaped plates 1 is provided with at least two second connecting holes. The two first connecting holes 4 of the lower connecting plate 2 are respectively connected to one of the second connecting holes of the two upper arc-shaped plates 1. The two upper arc-shaped plates 1 and the lower connecting plate 2 are fixedly connected by the connecting piece 3.

[0054] The second connecting hole of the upper arc plate 1 is connected to the first connecting hole 4 on the lower connecting plate 2 via a connector 3.

[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, the connector 3 can be a screw and two nuts. The screw passes through the first connecting hole 4 and the second connecting hole respectively, and the connecting plate 2 and the arc plate 1 are fixed by the two nuts.

[0056] In some embodiments, the connector 3 can be a bolt and a nut, with the bolt passing through the first connecting hole 4 and the second connecting hole respectively, and the connecting plate 2 and the arc plate 1 being fixed by the nut.

[0057] In a further embodiment, an arc-shaped washer is also included, which is installed between the nut and the arc-shaped plate 1, and between the nut and the connecting plate 2, wherein the arc of the arc-shaped washer is the same as the arc of the arc-shaped plate 1.

[0058] In some embodiments, such as Figure 3 As shown, there are four first connecting holes 4 on the connecting plate 2, and four second connecting holes are provided on the side wall of the arc plate 1 near the first end 101. The two second connecting holes of two adjacent arc plates 1 along the circumference are respectively arranged with the four first connecting holes 4 on the connecting plate 2 below, and are fixedly connected by bolts and nuts.

[0059] In one embodiment, the connecting plate 2 has a first connecting hole 4 in the radial direction of the cylindrical structure; the arc plate 1 has a second connecting hole in the radial direction of the cylindrical structure.

[0060] In this embodiment, such as Figure 1 As shown, when concrete is poured inside the wind turbine tower, the direction of the horizontal load of the concrete on the arc plate 1 is the radial direction of the cylindrical structure. The first connecting hole 4 and the second connecting hole are arranged radially along the cylindrical structure. The arc plate 1 and the connecting plate 2 are connected by the connector 3, which can improve the horizontal load resistance.

[0061] In some embodiments, the arc plate 1 and the connecting plate 2 are connected by a screw and a nut, with the axis of the screw coinciding with the axis of the first connecting hole 4 and the axis of the second connecting hole, thereby improving the connection strength between the connecting plate 2 and the arc plate 1 and enhancing the resistance to horizontal loads.

[0062] In one embodiment, a sealant is provided at the connection between two adjacent arc plates 1;

[0063] And / or, sealant is provided at the connection between adjacent connecting plates 2 and arc plate 1.

[0064] In this embodiment, sealant is provided at the connection between the arc-shaped plates 1 on the same layer to improve the sealing effect and prevent rainwater from seeping into the wind turbine tower during rainy weather.

[0065] In some embodiments, sealant is provided at the connection between adjacent connecting plates 2 and arc-shaped plates 1 along the first direction X to prevent rainwater from seeping into the wind turbine tower during rainy weather.

[0066] In some embodiments, the connection between adjacent connecting plates 2 and arc-shaped plates 1 may include a gap between the first end 101 of the upper arc-shaped plate 1 and the second end 102 of the lower arc-shaped plate 1, that is, a gap between the transverse surface of the annular step and the first end 101 of the upper arc-shaped plate 1.

[0067] In some embodiments, the connection between adjacent connecting plates 2 and arc-shaped plates 1 may also include a gap between the concave wall of arc-shaped plates 1 and connecting plates 2, that is, a gap between the concave wall of arc-shaped plates 1 and the longitudinal surface of the annular step.

[0068] In some embodiments, the connecting plate 2 is disposed within the concave arm of the arc-shaped plate 1, and an L-shaped gap is formed at the connection between the connecting plate 2 and the arc-shaped plate 1. The L-shaped gap can improve the sealing effect.

[0069] In some embodiments, the sealant may be an epoxy resin adhesive or a mortar.

[0070] In one embodiment, the convex sidewalls of two adjacent arc-shaped plates 1 are flush along the first direction X.

[0071] In some embodiments, the convex sidewalls of two adjacent arc-shaped plates 1 along the first direction X are flush, which can prevent rainwater from seeping into the wind turbine tower during rainy weather.

[0072] In one embodiment, the connecting plate 2 and the arc plate 1 have the same curvature along the circumference of the cylindrical structure.

[0073] In this embodiment, the connecting plate 2 and the arc plate 1 have a higher degree of fit, a tighter connection, and a higher connection strength, thereby improving the overall stability.

[0074] In one embodiment, the arc-shaped plate 1 and the connecting plate 2 are integrally formed.

[0075] In this embodiment, the integral molding improves the overall strength of the arc plate 1 and the connecting plate 2, and can shorten the connection time between the arc plate 1 and the connecting plate 2, thereby improving efficiency.

[0076] According to an embodiment of this application, another aspect, a wind power generation device is also provided.

[0077] Specifically, wind power generation devices include wind turbine towers as described above.

[0078] It should be noted that the wind power generation device includes the wind turbine tower provided in the embodiments of this application, and therefore includes all the advantages of the wind turbine tower mentioned above, so it will not be repeated here.

[0079] The following is an example, combined with Figures 1 to 4 A comprehensive explanation of all the above-mentioned plans is provided.

[0080] During construction, the first layer of curved plates 1 is assembled on the ground. Four curved plates 1 are spliced ​​together circumferentially to form a cylindrical unit. Then, the second layer of curved plates 1 is hoisted above the first layer of curved plates 1. The second layer of curved plates 1 is staggered with the first layer of curved plates 1 so that the splicing seams of the first layer of cylindrical units are staggered with the splicing seams of the second layer of cylindrical units. This can improve the connection strength between the curved plates 1 and distribute the load in the first direction X to multiple curved plates 1, thereby improving the overall firmness and stability.

[0081] The portion of the connecting plate 2 protruding from the second end 102 of the arc plate 1 forms an annular step with the second end 102 of the arc plate 1. The horizontal surface of the annular step is the second end 102 of the arc plate 1, and the vertical surface of the annular step is the side of the connecting plate 2 facing the concave surface of the arc plate 1.

[0082] The first end 101 of the second layer arc plate 1 abuts against the transverse surface of the annular step of the first layer arc plate 1, and the concave side surface of the second layer arc plate 1 abuts against the longitudinal surface of the annular step, which can position the second layer arc plate 1 in the radial direction of the cylindrical unit, improve installation efficiency, and shorten the construction period.

[0083] Two adjacent arc-shaped plates 1 are staggered along the first direction X, such that the first ends 101 of the two upper arc-shaped plates 1 simultaneously abut against the second ends 102 of the lower arc-shaped plate 1. This also causes the connecting plate 2 connected to the lower arc-shaped plate 1 to abut against the concave sidewalls of the two upper arc-shaped plates 1. The connecting plate 2 has four first connecting holes 4, and the sidewalls of the arc-shaped plates 1 near the first ends 101 have four second connecting holes. The two second connecting holes of each of the two adjacent arc-shaped plates 1 along the circumferential direction correspond to the four first connecting holes 4 on the lower connecting plate 2, and are fixedly connected by bolts and nuts.

[0084] The connection between adjacent connecting plates 2 and arc-shaped plates 1 may include a gap between the first end 101 of the upper arc-shaped plate 1 and the second end 102 of the lower arc-shaped plate 1, that is, a gap between the transverse surface of the annular step and the first end 101 of the upper arc-shaped plate 1; it may also include a gap between the concave wall of the arc-shaped plate 1 and the connecting plate 2, that is, a gap between the concave wall of the arc-shaped plate 1 and the longitudinal surface of the annular step. Epoxy resin adhesive is applied to the gaps to improve the sealing effect.

[0085] The arc-shaped plate 1 is installed along the first direction X using a hoisting mechanism to form a wind turbine tower.

[0086] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended application.

Claims

1. A wind turbine tower, characterized in that, include: Multiple arc-shaped plates (1) are connected to form a cylindrical structure, and each arc-shaped plate (1) is provided with a first end (101) and a second end (102) along a first direction (X); Multiple connecting plates (2) are arranged one-to-one on the concave sidewalls of multiple arc-shaped plates (1). Each connecting plate (2) extends along the first direction (X) and protrudes from the second end (102) of the arc-shaped plate (1). The second end (102) of the arc-shaped plate (1) abuts against the first end (101) of the arc-shaped plate (1) adjacent along the first direction (X). The portion of the connecting plate (2) protruding from the second end (102) of the arc-shaped plate (1) abuts against the concave sidewall of the arc-shaped plate (1) adjacent along the first direction (X). Multiple connectors (3) connect multiple connecting plates (2) and multiple arc-shaped plates (1) that abut against them; The first direction (X) is parallel to the axial direction of the cylindrical structure.

2. The wind turbine tower according to claim 1, characterized in that, The connecting plate (2) has an arc-shaped structure. The connecting plate (2) is provided with a first section (201) and a second section (202) along the first direction (X). The first section (201) is fixedly connected to the concave sidewall of the arc-shaped plate (1), and the convex sidewall of the second section (202) abuts against the concave sidewall of the arc-shaped plate (1) adjacent along the first direction (X).

3. The wind turbine tower according to claim 1, characterized in that, Along the first direction (X), two adjacent arc-shaped plates (1) are staggered.

4. The wind turbine tower according to claim 3, characterized in that, The connecting plate (2) is provided with at least two first connecting holes (4). The two arc-shaped plates (1) adjacent to the connecting plate (2) along the first direction (X) are each provided with at least two second connecting holes. The second connecting holes on the two arc-shaped plates (1) can be arranged corresponding to the two first connecting holes (4). The connector (3) passes through the corresponding first connecting hole (4) and the second connecting hole to fix the connecting plate (2) and the arc-shaped plate (1).

5. The wind turbine tower according to claim 4, characterized in that, The connecting plate (2) has the first connecting hole (4) opened in the radial direction of the cylindrical structure; the arc plate (1) has the second connecting hole opened in the radial direction of the cylindrical structure.

6. The wind turbine tower according to any one of claims 1 to 5, characterized in that, A sealant is provided at the connection between two adjacent arc-shaped plates (1); And / or, a sealant is provided at the connection between the adjacent connecting plate (2) and the arc plate (1).

7. The wind turbine tower according to any one of claims 1 to 5, characterized in that, The convex sidewalls of two adjacent arc-shaped plates (1) are flush with the first direction (X).

8. The wind turbine tower according to any one of claims 1 to 5, characterized in that, Along the circumference of the cylindrical structure, the connecting plate (2) has the same curvature as the arc plate (1).

9. The wind turbine tower according to any one of claims 1 to 5, characterized in that, The arc-shaped plate (1) and the connecting plate (2) are integrally formed.

10. A wind power generation device, characterized in that, include: The wind turbine tower according to any one of claims 1 to 9.

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