CN217999787U - Tower and wind generating set - Google Patents

Abstract

The application relates to a tower frame and a wind generating set, which comprise more than two tower barrel sections which are distributed at intervals along the axial direction and a connecting assembly used for connecting the two adjacent tower barrel sections, wherein the connecting assembly comprises a first flange barrel, a second flange barrel and a fastener; wherein, along the radial direction, the first flange barrel has a first friction surface facing the second flange barrel, the second flange barrel has a second friction surface facing the first flange barrel, and the friction coefficient of at least one of the first friction surface and the second friction surface is larger than the friction coefficient of the outer wall surface of the tower barrel section. The tower in the embodiment of the application can improve the connection strength between tower sections, and simultaneously reduces the material cost and the manufacturing cost.

Description

Tower and wind generating set

Technical Field

The application relates to the technical field of wind power, in particular to a tower and a wind generating set.

Background

For convenience of transportation and installation, the tower is generally divided into a plurality of tower sections along the axial direction, and adjacent tower sections are connected in a segmented manner through flanges. Due to the transportation and hoisting limitation, the L-shaped flange or the T-shaped flange is mostly adopted for sectional connection at present.

However, as the single-machine capacity of the wind generating set gradually expands, the height of the tower barrel is higher and higher. In this case, if the L-shaped flange is used for connection, the diameter of the L-shaped flange needs to be increased, which increases the manufacturing difficulty, and if the T-shaped flange is used for connection, there are problems of external corrosion prevention of the bolts, high unit price of the T-shaped flange, and the like.

Therefore, it is desirable to provide a new tower and a wind turbine generator system.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a pylon and wind generating set can improve the joint strength between two adjacent tower section of thick bamboo sections, need not to adopt L type flange or T type flange that the price is expensive, has reduced material cost and manufacturing cost.

In one aspect, a tower is provided according to an embodiment of the present application, including: the number of the tower cylinder sections is more than two, and the more than two tower cylinder sections are distributed at intervals along the axial direction; the connecting assembly comprises a first flange barrel, a second flange barrel and a fastener, the first flange barrel is inserted into the second flange barrel along the axial direction, the first flange barrel is connected with one of the two adjacent tower barrel sections, the second flange barrel is connected with the other of the two adjacent tower barrel sections, and the fastener is inserted into the first flange barrel and the second flange barrel in the radial direction of the tower barrel sections; wherein, along the radial direction, the first flange barrel has a first friction surface facing the second flange barrel, the second flange barrel has a second friction surface facing the first flange barrel, and the friction coefficient of at least one of the first friction surface and the second friction surface is larger than the friction coefficient of the outer wall surface of the tower barrel section.

According to an aspect of an embodiment of the application, the friction coefficient of the first friction surface and the friction coefficient of the second friction surface are both larger than the friction coefficient of the outer wall surface of the tower section.

According to an aspect of an embodiment of the present application, at least one of the first and second flanged drums is provided with a plating layer in a radial direction to plate coarse particles on the first and/or second friction surfaces.

According to one aspect of an embodiment of the present application, a clearance fit is employed between the first flanged cylinder and the second flanged cylinder.

According to an aspect of an embodiment of the application, a friction coefficient of at least one of the first friction face and the second friction face is greater than or equal to 0.3.

According to an aspect of the embodiment of the application, the first flange barrel is provided with a through hole in a radial penetrating manner, the second friction surface of the second flange barrel is provided with a blind hole corresponding to the through hole, and the fastening piece sequentially penetrates through the through hole and the blind hole.

According to an aspect of an embodiment of the present application, the aperture of the through hole is greater than or equal to the aperture of the blind hole.

According to an aspect of the embodiment of the present application, the connecting assembly further includes an arc-shaped member, the arc-shaped member is attached to a side of the first flange barrel facing away from the first friction surface in a radial direction, and a surface of the arc-shaped member facing away from the first flange barrel is a plane; the fastener comprises a nail head and a rod part which are connected, and the rod part is inserted into the first flange barrel and enables the nail head to be abutted against the plane.

According to an aspect of an embodiment of the present application, the second flange cylinder is axially connected to an upper tower section of the two adjacent tower sections, and the first flange cylinder is axially connected to a lower tower section of the two adjacent tower sections.

In another aspect, a wind turbine generator system is provided according to an embodiment of the present application, and includes the tower in the above embodiment.

According to the tower provided by the embodiment of the application, the tower comprises a plurality of tower barrel sections and a connecting assembly used for connecting two adjacent tower barrel sections, wherein the connecting assembly comprises a first flange barrel, a second flange barrel and a fastener, the first flange barrel is inserted into the second flange barrel, and the fastener is inserted into the first flange barrel and the second flange barrel along the radial direction to realize the connection and fastening of the two adjacent tower barrel sections. The first flange barrel is provided with a first friction surface facing the second flange barrel, the second flange barrel is provided with a second friction surface facing the first flange barrel, and the friction coefficient of at least one of the first friction surface and the second friction surface is larger than that of the outer wall surface of the tower barrel section, so that when the first flange barrel and the second flange barrel are fastened through the fastening piece, the axial external load can be resisted through the friction force between the first flange barrel and the second flange barrel, the connection strength between two adjacent tower barrel sections is ensured, and compared with an expensive L-shaped flange or an expensive T-shaped flange, the material cost and the manufacturing cost are reduced.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a wind turbine generator system according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a tower according to an embodiment of the present application;

FIG. 3 is an elevation view of a tower according to an embodiment of the present application;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a cross-sectional view of a connection assembly of one embodiment of the present application;

FIG. 6 is a schematic view of a connection of a first flanged cylinder and a second flanged cylinder according to an embodiment of the present application;

fig. 7 is a schematic view of an arcuate member according to an embodiment of the present application.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

In the drawings:

100-a tower; 200-a nacelle; 300-a generator; 400-an impeller; 500-a base platform;

1-a tower section; 1 a-a first column section; 1 b-a second column section;

2-connecting the components; 21-a first flange cylinder; 211 — a first connection hole; 22-a second flange cylinder; 221-a second connection hole; 23-a fastener; 24-an arc; 241-plane;

3-a transition section;

x-radial; y-axial direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The following description is given with the directional terms as they are shown in the drawings and is not intended to limit the specific structure of the tower and wind turbine generator system of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For better understanding of the present application, the tower and the wind turbine generator set according to the embodiment of the present application will be described in detail below with reference to fig. 1 to 7.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present application. The present application provides a wind turbine generator set, including a tower 100, a nacelle 200, a generator 300, an impeller 400 and a base platform 500, wherein the tower 100 is connected to the base platform 500, the nacelle 200 is disposed on the top end of the tower 100, and the generator 300 is disposed on the nacelle 200, and may be located inside the nacelle 200, or may be located outside the nacelle 200. The impeller 400 includes a hub 410 and a plurality of blades 420 connected to the hub 410, and the impeller 400 is connected to a rotation shaft of the generator 300 through the hub 410 thereof. When wind acts on the blades 420, the whole impeller 400 and the rotating shaft of the generator 300 are driven to rotate, so that wind energy is converted into electric energy.

In the prior art, particularly for an offshore wind turbine generator system, a tower frame 100 of the offshore wind turbine generator system often comprises a plurality of tower cylinder sections, and due to transportation and hoisting limitations, the tower cylinder sections are connected in a segmented manner by adopting L-shaped flanges or T-shaped flanges, and due to the influence of various factors such as gradual increase of the height of the tower frame 100, gradual development of offshore wind power to deep and far sea, large-scale machine types and the like, the diameters of the flanges need to be larger and larger, so that the L-shaped flanges or the T-shaped flanges have the problems of difficult manufacture, high unit price and the like. Therefore, in order to overcome the above-mentioned defects, the present invention further provides a novel tower 100, and the tower 100 can be used for the wind turbine generator system of the above-mentioned embodiments, especially for an offshore wind turbine generator system, and is a component of the wind turbine generator system, and of course, can also be produced or sold as an independent component.

Referring to fig. 2 to 5, the present embodiment provides a tower 100, including two or more tower tube segments 1 and a connecting assembly 2, where the number of the tower tube segments 1 is two or more, the two or more tower tube segments 1 are distributed along an axial direction Y, two adjacent tower tube segments 1 are connected by the connecting assembly 2, the connecting assembly 2 includes a first flange tube 21, a second flange tube 22 and a fastening member 23, the first flange tube 21 is inserted into the second flange tube 22 along the axial direction Y, the first flange tube 21 is connected to one of the two adjacent tower tube segments 1, the second flange tube 22 is connected to the other of the two adjacent tower tube segments 1, and the fastening member 23 is inserted into the first flange tube 21 and the second flange tube 22 in a radial direction X of the tower tube 1. Wherein, in the radial direction X, the first flange barrel 21 has a first friction surface facing the second flange barrel 22, the second flange barrel 22 has a second friction surface facing the first flange barrel 21, and at least one of the first friction surface and the second friction surface has a higher friction coefficient than the outer wall surface of the tower barrel section 1.

The tower 100 provided by the embodiment of the application connects two adjacent tower tube sections 1 through the connecting assembly 2, the connecting assembly 2 includes a first flange tube 21, a second flange tube 22 and a fastener 23, the first flange tube 21 and the second flange tube 22 are respectively disposed at opposite ends of the two adjacent tower tube sections 1, and the connection fastening of the two adjacent tower tube sections 1 is realized by inserting the first flange tube 21 into the second flange tube 22 along the axial direction Y and inserting the fastener 23 into the first flange tube 21 and the second flange tube 22 along the radial direction X. The first flange barrel 21 has a first friction surface facing the second flange barrel 22, the second flange barrel 22 has a second friction surface facing the first flange barrel 21, and the friction coefficient of at least one of the first friction surface and the second friction surface is greater than the friction coefficient of the outer wall surface of the tower barrel section 1, so that when the first flange barrel 21 and the second flange barrel 22 are fastened through the fastening piece 23, the axial Y external load can be resisted through the friction force between the first flange barrel 21 and the second flange barrel 22, the connection strength between two adjacent tower barrel sections 1 is ensured, and compared with an expensive L-shaped flange or an expensive T-shaped flange, the material cost and the manufacturing cost are reduced.

It should be understood that the first flange barrel 21 and the second flange barrel 22 may be manufactured separately from the tower segment 1, and then the first flange barrel 21 and the second flange barrel 22 are assembled with the two adjacent tower segments 1 by welding or the like, or the first flange barrel 21 and the second flange barrel 22 may be integrally formed with the corresponding tower segment 1.

It should be noted that, at least one of the first friction surface and the second friction surface has a friction coefficient greater than that of the outer wall surface of the tower section 1, which means that the roughness of the surface of at least one of the first flange 21 and the second flange 22 is increased compared to the tower section 1, on one hand, under the condition that the pretightening force of the fastening members 23 is the same, the friction force between the first flange 21 and the second flange 22 can be increased, so as to improve the connection strength between the first flange 21 and the second flange 22, and ensure the stable connection of the tower sections 1. On the other hand, under the condition that the friction force between the first flange barrel 21 and the second flange barrel 22 is the same, the pretightening force requirement on the fastening piece 23 is reduced, and the reduction of the material cost and the manufacturing cost of the tower 100 is realized.

Alternatively, the friction coefficients of the first friction surface and the second friction surface are both greater than the friction coefficient of the outer wall surface of the tower section 1. By making the friction coefficients of the first friction surface and the second friction surface larger than the friction coefficient of the outer wall surface of the tower tube section 1, under the condition that the friction forces generated by pre-tightening the fastening piece 23 between the first flange tube 21 and the second flange tube 22 are the same, the requirement on the pre-tightening force of the fastening piece 23 is further reduced, and the reduction of the material cost and the manufacturing cost of the tower frame 100 is further realized.

In order to make the friction coefficient of the first friction surface and the second friction surface larger than the friction coefficient of the outer wall surface of the tower section 1, in some alternative embodiments, at least one of the first flange 21 and the second flange 22 is provided with a plating layer along the radial direction X to form coarse particles on the first friction surface and/or the second friction surface by plating. For example, a zinc plating process may be performed on the surface of at least one of the first flange 21 and the second flange 22, so as to plate coarse particles on the first friction surface and/or the second friction surface, so as to increase the roughness of the first friction surface and/or the second friction surface. In addition, a grinding or sand blasting process method can be adopted to form the first friction surface and the second friction surface, and the specific manufacturing process can be adjusted according to the actual working condition.

Optionally, at least one of the first friction surface and the second friction surface has a coefficient of friction greater than or equal to 0.3, so as to ensure the connection strength of the connection assembly 2.

To achieve a good fit, in some alternative embodiments, a clearance fit is used between the first flanged cylinder 21 and the second flanged cylinder 22. For example, the nominal size of the outer diameter of the first flanged cylinder 21 and the inner diameter of the second flanged cylinder 22 may be the same, and the outer diameter of the first flanged cylinder 21 is set to a negative tolerance, and the inner diameter of the second flanged cylinder 22 is set to a positive tolerance, so as to form a clearance fit structure, so that the first flanged cylinder 21 is inserted into the second flanged cylinder 22, and the first flanged cylinder 21 and the second flanged cylinder 22 are assembled.

Optionally, the tolerance value of the first flange barrel 21 and the second flange barrel 22 is not greater than 2mm, so as to avoid that the fit clearance between the first flange barrel 21 and the second flange barrel 22 is too large to affect the stability of the connecting assembly 2.

Referring to fig. 2 to 5, in some alternative embodiments, the thickness of the first flange cylinder 21 and the second flange cylinder 22 is greater than the thickness of the tower cylinder section 1 in the radial direction X, so as to ensure the structural strength of the connecting assembly 2. Alternatively, the first flange cylinder 21 may be provided as a hot rolled or normalized plate having a thickness of not less than 80mm to secure the structural strength of the coupling assembly 2.

For convenience of description, the connection between the first flange casing 21 and the tower section 1 is taken as an example, and the connection structure between the second flange casing 22 and the tower section 1 may be identical to the first flange casing 21.

In order to avoid the abrupt change area of the thickness at the junction of the first flange barrel 21 and the tower barrel section 1, the first flange barrel 21 and the tower barrel section 1 are connected through the wedge-shaped transition section 3, the thickness of the transition section 3 is gradually increased from the tower barrel section 1 to the first flange barrel 21, namely, the inner wall surface and/or the outer wall surface of the transition section 3 are obliquely arranged, wherein the inclination of the inner wall surface and/or the outer wall surface of the transition section 3 is not less than 1:4, so that the uniform transition from the tower barrel section 1 to the first flange barrel 21 is realized, and the stress concentration is avoided.

It can be understood that, in the radial direction X, when the thickness of the first flange barrel 21 is greater than the thickness of the tower barrel section 1, in order to facilitate the connection between the first flange barrel 21 and the tower barrel section 1, the outer diameter of the first flange barrel 21 may be aligned with the outer diameter of the tower barrel section 1, that is, one side surface of the first flange barrel 21 facing the second flange barrel 22 is flush with the outer wall surface of the tower barrel section 1, one side surface of the first flange barrel 21 facing away from the second flange barrel 22 is arranged to protrude from the inner wall surface of the tower barrel section 1, and the inner wall surface of the transition section 3 is arranged to incline, so as to realize the transition from the first flange barrel 21 to the tower barrel section 1.

Or, the pitch diameter of the first flange barrel 21 may be aligned with the pitch diameter of the tower barrel section 1, that is, the two side surfaces of the first flange barrel 21 along the radial direction X are both protruded from the two side surfaces of the tower barrel section 1, and the inner wall surface and the outer wall surface of the transition section 3 are both inclined, so that the transition from the first flange barrel 21 to the tower barrel section 1 is realized, and the specific connection mode may be adjusted according to the specific structures of the first flange barrel 21 and the tower barrel section 1.

Referring to fig. 4 to 6, in order to connect the first flange cylinder 21 and the second flange cylinder 22 through the fastening member 23, the first flange cylinder 21 and the second flange cylinder 22 are respectively and correspondingly provided with a first connecting hole 211 and a second connecting hole 221, and the fastening member 23 is sequentially inserted through the first connecting hole 211 and the second connecting hole 221 to realize the connection and fixation of the first flange cylinder 21 and the second flange cylinder 22.

It can be understood that n rows of first connection holes 211 and second connection holes 221 may be formed in the first flange cylinder 21 and the second flange cylinder 22 along the axial direction Y, where n is greater than or equal to 3, and the same row of first connection holes 211 is arranged at intervals along the circumferential direction of the first flange cylinder 21. Wherein, the angle of predetermineeing can stagger along the circumference of a first flange section of thick bamboo 21 to two at least rows of first connecting hole 211 to improve coupling strength of coupling assembling 2, also can make each row of first connecting hole 211 be the matrix along the circumference of a first flange section of thick bamboo 21 and arrange, so that the counterpoint of first connecting hole 211 and second connecting hole 221 is connected. The number and size of the first connection holes 211 and the second connection holes 221 may be adjusted according to the load that the tower 100 needs to bear, and the present application is not limited thereto.

Referring to fig. 4 to 6, in some optional embodiments, the first flange barrel 21 is provided with a through hole along the radial direction X, the second friction surface of the second flange barrel 22 is provided with a blind hole corresponding to the through hole, and the fastening member 23 is sequentially disposed through the through hole and the blind hole. Can set up first connecting hole 211 into the through-hole, second connecting hole 221 sets up to the blind hole, wears to establish the through-hole on the first flange section of thick bamboo 21 and the blind hole of the second flange section of thick bamboo 22 through with fastener 23 in proper order, realizes that the connection of a first flange section of thick bamboo 21 and a second flange section of thick bamboo 22 is fixed. Because the second flange cylinder 22 is sleeved outside the first flange cylinder 21, the second connecting hole 221 of the second flange cylinder 22 is a blind hole, so that rainwater and atmosphere outside the tower 100 can be prevented from invading along the second connecting hole 221, and the rainwater and atmosphere outside the tower 100 can be prevented from eroding.

Alternatively, the diameter of the through-hole is larger than the diameter of the blind-hole, thereby further facilitating the threading of the fastener 23 through the through-hole and the blind-hole in this order. When the second friction surface of the second flange tube 22 is provided with a blind hole, in the radial direction X, a distance between the bottom of the blind hole and a side surface of the second flange tube 22 away from the second friction surface, that is, a remaining wall thickness of the second flange tube 22 should be greater than or equal to 10mm, so as to prevent erosion of rainwater and atmosphere outside the tower 100.

Referring to fig. 4 to 7, in some optional embodiments, the connecting assembly 2 further includes an arc-shaped member 24, in the radial direction X, the arc-shaped member 24 is attached to a side of the first flange barrel 21 facing away from the first friction surface, and a surface of the arc-shaped member 24 facing away from the first flange barrel 21 is a plane 241. The fastener 23 comprises a head and a shank connected to the head, the shank being inserted into the first flange 21 and having the head abutting the flat surface 241. Through establish arc piece 24 at the pad of the one side that first flange section of thick bamboo 21 deviates from first friction surface, wear to establish first flange section of thick bamboo 21 and second flange section of thick bamboo 22 with fastener 23 in proper order after, the pin head of fastener 23 promptly with the plane 241 looks butt of arc piece 24 to ensure the even transmission of pretightning force.

Alternatively, the fastening member 23 may be a friction type high-strength bolt, and the first flange barrel 21 and the second flange barrel 22 are pressed by a pretightening force generated by tightening the fastening member 23, so that the connection strength of the connection assembly 2 is ensured. When the fastener 23 is set to the friction type high-strength bolt, the through hole and the blind hole may be set to the screw hole, and the depth of the screw hole may be greater than or equal to 10 pitches to secure the coupling strength of the fastener 23.

Referring to fig. 4 to 7, in order to further avoid water vapor erosion, in some alternative embodiments, in the axial direction Y, the second flange cylinder 22 is connected to the tower cylinder section 1 located above in the two adjacent tower cylinder sections 1, and the first flange cylinder 21 is connected to the tower cylinder section 1 located below in the two adjacent tower cylinder sections 1.

For convenience of description, in the axial direction Y, the tower section 1 located below in two adjacent tower sections 1 is defined as a first tower section 1a, the tower section 1 located above is defined as a second tower section 1b, opposite ends of the second tower section 1b and the first tower section 1a are respectively connected with a second flange barrel 22 and a first flange barrel 21, and the first flange barrel 21 is inserted into the second flange barrel 22, so that the first tower section 1a and the second tower section 1b are connected. Since the first flange tube 21 is inserted into the second flange tube 22, the second tower tube section 1b is disposed above the first tower tube section 1a, so that the moisture outside the tower 100 can be prevented from entering the gap between the second flange tube 22 and the first flange tube 21 along the outer wall surface of the second tower tube section 1b, and the erosion of the rain and the atmosphere outside the tower 100 can be further prevented.

It can be understood that one end of the second tower tube section 1b departing from the first tower tube section 1a can be connected with the first flange tube 21 of another connecting assembly 2, and can also be connected with an L-shaped flange, because the second tower tube section 1b is positioned above, one end of the second tower tube section 1b departing from the first tower tube section 1a is positioned in the middle of the tower 100, so that the load is relatively small, the L-shaped flange with a lower specification can be adopted, and the scheme design of the tower 100 can be completed with a smaller cost.

Therefore, in the tower 100 provided by the embodiment of the present invention, two adjacent tower sections 1 are connected by the connection assembly 2, the connection assembly 2 includes a first flange barrel 21, a second flange barrel 22 and a fastener 23, the first flange barrel 21 and the second flange barrel 22 are respectively disposed at opposite ends of the two adjacent tower sections 1, and the connection fastening of the two adjacent tower sections 1 is realized by inserting the first flange barrel 21 into the second flange barrel 22 along the axial direction Y and inserting the fastener 23 into the first flange barrel 21 and the second flange barrel 22 along the radial direction X. The first flange barrel 21 has a first friction surface facing the second flange barrel 22, the second flange barrel 22 has a second friction surface facing the first flange barrel 21, and the friction coefficient of at least one of the first friction surface and the second friction surface is greater than the friction coefficient of the outer wall surface of the tower barrel section 1, so that when the first flange barrel 21 and the second flange barrel 22 are fastened through the fastening piece 23, the axial Y external load can be resisted through the friction force between the first flange barrel 21 and the second flange barrel 22, the connection strength between two adjacent tower barrel sections 1 is ensured, and compared with an expensive L-shaped flange or an expensive T-shaped flange, the material cost and the manufacturing cost are reduced.

The wind generating set provided by the embodiment of the invention comprises the tower 100 provided by each embodiment, so that the material cost and the manufacturing cost of the tower 100 can be greatly reduced, the current flat background requirement can be met, and the wind generating set is easy to popularize and use.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A tower (100), comprising:

the tower cylinder sections (1) are more than two, and the more than two tower cylinder sections (1) are distributed along the axial direction;

the connecting assembly (2), two adjacent tower cylinder sections (1) are connected through the connecting assembly (2), the connecting assembly (2) comprises a first flange cylinder (21), a second flange cylinder (22) and a fastener (23), the first flange cylinder (21) is inserted into the second flange cylinder (22) along the axial direction, the first flange cylinder (21) is connected with one of the two adjacent tower cylinder sections (1), the second flange cylinder (22) is connected with the other of the two adjacent tower cylinder sections (1), and the fastener (23) is inserted into the first flange cylinder (21) and the second flange cylinder (22) in the radial direction of the tower cylinder sections (1);

wherein, in the radial direction, the first flange barrel (21) has a first friction surface facing the second flange barrel (22), the second flange barrel (22) has a second friction surface facing the first flange barrel (21), and at least one of the first friction surface and the second friction surface has a friction coefficient greater than a friction coefficient of an outer wall surface of the tower barrel section (1).

2. A tower (100) according to claim 1, wherein the coefficient of friction of the first friction surface and the second friction surface are each larger than the coefficient of friction of the outer wall surface of the tower section (1).

3. A tower (100) according to claim 1, wherein at least one of said first flange cylinder (21) and said second flange cylinder (22) is provided with a plating layer in said radial direction to plate coarse particles on said first friction surface and/or said second friction surface.

4. A tower (100) according to claim 3, wherein a clearance fit is used between said first flange cylinder (21) and said second flange cylinder (22).

5. A tower (100) according to claim 1, wherein a friction coefficient of at least one of said first friction face and said second friction face is larger than or equal to 0.3.

6. The tower (100) of claim 1, wherein the first flange cylinder (21) is radially provided with a through hole, the second friction surface of the second flange cylinder (22) is provided with a blind hole corresponding to the through hole, and the fastening member (23) is sequentially arranged through the through hole and the blind hole.

7. The tower (100) of claim 6, wherein the aperture of said through hole is greater than or equal to the aperture of said blind hole.

8. A tower (100) according to claim 1, wherein said connection assembly (2) further comprises an arc-shaped piece (24), said arc-shaped piece (24) in said radial direction is attached to a side of said first flange cylinder (21) facing away from said first friction surface, a surface of said arc-shaped piece (24) facing away from said first flange cylinder (21) is a plane (241);

the fastener (23) comprises a nail head and a rod part which are connected, and the rod part is inserted into the first flange cylinder (21) and enables the nail head to be abutted against the plane (241).

9. The tower (100) according to claim 1, wherein in the axial direction the second flanged drum (22) is connected to the upper one (1) of the two adjacent drum segments (1) and the first flanged drum (21) is connected to the lower one (1) of the two adjacent drum segments (1).

10. A wind park comprising a tower (100) according to any of claims 1-9.

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