Tower drum section, tower drum, forming method of tower drum and wind generating set

Abstract

The invention relates to a tower drum section, a tower drum, a forming method of the tower drum and a wind generating set. The tower drum section comprises a metal drum section, a connecting piece and a filling body. The metal cylinder section comprises a first annular body and a second annular body which are distributed at intervals in the radial direction of the metal cylinder section, and the first annular body and the second annular body define a containing cavity. The connecting piece is at least partially arranged in the containing cavity and connected with at least one of the first annular body and the second annular body. The filling body is filled in the containing cavity and connected with the first annular body, the second annular body and the connecting piece, and the filling body wraps at least part of the connecting piece. According to the tower drum section, the tower drum can be spliced and formed without a welding mode, construction is convenient, and the forming quality of the tower drum can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to tower sections, tower sections, tower forming methods, and wind turbine generator sets. Background Technology

[0002] With the development of high-power wind turbine generators, the diameter of the rotor is getting larger and larger, and the corresponding tower height and cross-sectional dimensions are also getting larger and larger. The lower-cost concrete-steel hybrid tower is gradually replacing the pure steel tower in the market.

[0003] In the existing technology, concrete-steel hybrid towers are usually formed by welding concrete-steel hybrid tower sections. However, the welding process requires high precision in the connection between the two tower sections, which makes the welding difficult. In addition, the concrete-steel hybrid tower sections have high temperature requirements for welding, and the welding method can easily affect the quality of the tower. Summary of the Invention

[0004] This application provides a tower section, a tower, a tower forming method, and a wind turbine generator set. The tower section can be assembled into a tower without welding, which facilitates construction and helps ensure the forming quality of the tower.

[0005] On one hand, according to an embodiment of this application, a tower section is provided, comprising: a metal cylinder section including a first annular body and a second annular body distributed radially at intervals, the first annular body and the second annular body enclosing a receiving cavity; a connector, at least partially disposed in the receiving cavity and connected to at least one of the first annular body and the second annular body; and a filler, filling the receiving cavity and connected to the first annular body, the second annular body and the connector, the filler covering at least a portion of the connector.

[0006] According to one aspect of the embodiments of this application, the number of connectors is set to two or more, and at least a portion of the connectors are distributed at axial intervals along the metal cylinder segment.

[0007] According to one aspect of the embodiments of this application, the metal cylinder section is provided with at least one connector on one side in the axial direction, and at least one connector on the other side.

[0008] According to one aspect of the embodiments of this application, the connector is connected to a first annular body on one radial side and to a second annular body on the other side.

[0009] According to one aspect of the embodiments of this application, the connector includes a main body, a first connecting part, and a second connecting part. In the radial direction, the orthographic projection of the main body overlaps with the orthographic projections of the first connecting part and the second connecting part. The main body is connected to a first annular body through the first connecting part and to a second annular body through the second connecting part.

[0010] According to one aspect of the embodiments of this application, the main body, the first connecting part and the second connecting part are all annular structures. The main body is provided with the first connecting part at one end in the radial direction and the second connecting part at the other end. Both the first connecting part and the second connecting part are disposed in the receiving cavity.

[0011] According to one aspect of the embodiments of this application, the main body has a strip-shaped structure, and the main body passes through the first annular body and the second annular body in sequence. The first connecting part is disposed on the side of the first annular body facing away from the receiving cavity and is connected to the main body, and the second connecting part is disposed on the side of the second annular body facing away from the receiving cavity and is connected to the main body.

[0012] According to one aspect of the embodiments of this application, one radial end of the connector is connected to one of the first annular body and the second annular body, and the other end extends into the filling body and is spaced apart from the other of the first annular body and the second annular body.

[0013] According to one aspect of the embodiments of this application, the connector includes at least one of a stud and a shear key.

[0014] According to one aspect of the embodiments of this application, the filler has a through hole extending axially along the metal cylinder segment, wherein the orthographic projection of the connector is offset from the orthographic projection of the through hole in the axial direction, and the through hole is configured to pass through a prestressed member.

[0015] On the other hand, according to an embodiment of this application, a tower is provided, including tower sections as described above, wherein the number of tower sections is two or more.

[0016] According to one aspect of the embodiments of this application, the tower also includes a prestressing member that passes sequentially through the filler in two or more tower sections.

[0017] In another aspect, according to an embodiment of this application, a method for forming a tower is proposed, comprising: providing two or more tower segments, each tower segment including a metal cylinder segment, a connector, and a filler, the metal cylinder segment including a first annular body and a second annular body distributed radially at intervals, the first annular body and the second annular body enclosing a receiving cavity, the filler filling the receiving cavity and connecting to the first annular body, the second annular body and the connector, the filler covering at least a portion of the connector; applying an adhesive to at least one end of the tower segment along the axial direction of the metal cylinder segment, sequentially splicing the two or more tower segments along the axial direction, and bonding adjacent two tower segments together with the adhesive.

[0018] Furthermore, according to embodiments of this application, a wind turbine generator set is proposed, including the tower as described above.

[0019] The tower section, tower, tower forming method, and wind turbine generator provided in this application embodiment include a tower section comprising a metal cylinder section, connectors, and filler. By providing connectors that connect to the metal cylinder section and filler, and by filling the filler into the receiving cavity of the metal cylinder section and covering at least part of the connectors, when the tower section is subjected to external force, the metal cylinder section can transmit this external force to the nearby filler through the connectors, so that the filler near the connectors can exert its good compressive strength, thereby improving the load-bearing capacity of the tower section. Therefore, the tower formed by splicing the tower sections does not need to be connected by welding, which is convenient for construction, and adjacent tower sections have good connection strength, which helps to ensure the forming quality of the tower. Attached Figure Description

[0020] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of this application;

[0022] Figure 2 This is a partial structural schematic diagram of a tower according to an embodiment of this application;

[0023] Figure 3 This is a partial structural schematic diagram of a tower section according to an embodiment of this application;

[0024] Figure 4 This is a partial structural diagram of a connector in a tower section according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the connecting member in a tower section according to an embodiment of this application;

[0026] Figure 6 This is a partial cross-sectional view of a tower section according to an embodiment of this application;

[0027] Figure 7 This is a partial cross-sectional view of a tower section according to another embodiment of this application;

[0028] Figure 8 This is a partial cross-sectional view of a tower section according to yet another embodiment of this application;

[0029] Figure 9 This is a partial cross-sectional view of a tower section according to yet another embodiment of this application;

[0030] Figure 10 This is a partial cross-sectional view of a tower section according to another embodiment of this application;

[0031] Figure 11 This is a schematic flowchart illustrating a tower forming method according to another embodiment of this application.

[0032] in:

[0033] 1-Tower section; 100-Tower section; 200-Prestressed component;

[0034] 10-Metal cylindrical section; 11-First annular body; 12-Second annular body; 101-Receiving cavity;

[0035] 20 - Connector; 21 - Main body; 22 - First connecting part; 23 - Second connecting part;

[0036] 30 - Filler; 301 - Via;

[0037] 2-Nacelle; 3-Generator; 4-Impeller; 410-Hub; 420-Blade;

[0038] X - radial; Y - axial. Detailed Implementation

[0039] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0040] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the tower section, tower, tower forming method, or wind turbine generator set of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] To better understand this application, the following will be combined with... Figure 1 and Figure 11 The tower section 100, tower 1, tower 1 forming method and wind turbine generator set according to the embodiments of this application will be described in detail.

[0042] Please see Figure 1 , Figure 1This is a schematic diagram of a wind turbine generator set according to one embodiment of this application. This embodiment provides a wind turbine generator set including a tower 1, a nacelle 2, a generator 3, and a rotor 4. The tower 1 is connected to the wind turbine foundation and is composed of multiple tower sections 100 spliced ​​together. The nacelle 2 is located at the top of the tower 1, and the generator 3 is located in the nacelle 2. In some examples, the generator 3 can be located outside the nacelle 2; of course, in some examples, the generator 3 can also be located inside the nacelle 2. The rotor 4 includes blades 402 and a hub 401. Multiple blades 402 are connected to the hub 401. When wind power acts on the blades 402, it drives the entire rotor 4 and the shaft of the generator 3 to rotate, thereby converting wind energy into electrical energy.

[0043] With the development of high-power wind turbine generators, the diameter of the rotor 4 is getting larger and larger, and the height and cross-sectional dimensions of the tower 1 are also getting larger and larger. Traditional steel towers are gradually being replaced by lower-cost concrete-steel hybrid towers. A concrete-steel hybrid tower refers to a tower structure formed by filling concrete into a steel pipe, with the steel pipe and the internal concrete jointly bearing the external load.

[0044] Existing concrete-steel hybrid towers are typically formed by welding multiple concrete-steel hybrid tower sections. The welding process requires high precision in the connection between the two sections, making it difficult to weld. Furthermore, the welding temperature requirements for the concrete-steel hybrid tower sections are high, and the welding process can easily affect the quality of the tower sections. Some concrete-steel hybrid tower sections also have flanges, with two sections connected by flange bolts to form the tower. However, under cyclic loads, the flange bolts require regular maintenance, resulting in resource waste.

[0045] Based on the above deficiencies, this application provides a tower section 100, which can be manufactured and sold independently as a separate component. Furthermore, as... Figure 2 As shown, the tower section 100 can also be used in the tower 1 and as a component of the tower 1. The tower section 100 can be assembled into the tower 1 without welding, which is convenient for construction and helps to ensure the forming quality of the tower 1.

[0046] Please refer to the following: Figures 2 to 10This application provides a tower section 100, including a metal section 10, a connector 20, and a filler 30. The metal section 10 includes a first annular body 11 and a second annular body 12 spaced apart along its radial direction X, the first annular body 11 and the second annular body 12 forming a receiving cavity 101. The connector 20 is at least partially disposed in the receiving cavity 101 and connected to at least one of the first annular body 11 and the second annular body 12. The filler 30 fills the receiving cavity 101 and is connected to the first annular body 11, the second annular body 12, and the connector 20, the filler 30 covering at least a portion of the connector 20.

[0047] The metal cylindrical section 10 includes a first annular body 11 and a second annular body 12 distributed radially at intervals along the X direction, wherein the first annular body 11 is disposed inside the second annular body 12.

[0048] The first annular body 11 and the second annular body 12 can have the same shape, or they can be different. Optionally, along the axial Y direction of the metal cylinder segment 10, the orthographic projections of the first annular body 11 and the second annular body 12 can be respectively set as a circular, polygonal, or elliptical structure. For example, both the orthographic projections of the first annular body 11 and the second annular body 12 can be set as circular structures; or, the orthographic projection of the first annular body 11 can be set as a circular structure and the orthographic projection of the second annular body 12 can be set as a rectangular structure; or, the orthographic projection of the first annular body 11 can be set as a rectangular structure and the orthographic projection of the second annular body 12 can be set as a circular structure. The specific design can be customized according to user requirements.

[0049] For example, the orthogonal projections of the first annular body 11 and the second annular body 12 on the axial Y direction are both set as circular structures.

[0050] The connector 20 being at least partially disposed in the receiving cavity 101 means that the entire connector 20 may be located inside the receiving cavity 101, or that a portion of the connector 20 may be located inside the receiving cavity 101 and another portion may be located outside the receiving cavity 101.

[0051] The connector 20 can be connected to the first annular body 11, the second annular body 12, or both. Optionally, the connector 20 can be connected to at least one of the first annular body 11 and the second annular body 12 by means of welding, bonding, or detachable connection.

[0052] Optionally, the connector 20 and the metal cylinder section 10 can be made of the same material, or they can be made of different materials. For example, both the connector 20 and the metal cylinder section 10 can be made of steel, or the metal cylinder section 10 can be made of steel, and the connector 20 can be made of a metal material with slightly lower strength than steel.

[0053] The arrangement of the filler 30 covering at least a portion of the connector 20 can be understood as meaning that the connector 20 can be connected to at least one of the first annular body 11 and the second annular body 12, and can be covered by the filler 30. For example... Figure 6 As shown, the connector 20 can be embedded within the filler 30, that is, the connector 20 has fillers 30 on both sides along the axial direction Y, or, as... Figure 7 As shown, the connector 20 can also be located at the end of the metal cylinder section 10, that is, the connector 20 is provided with a filler 30 on one side along the axial direction Y.

[0054] In some embodiments, the filler 30 may include concrete, thereby improving the connection strength between the filler 30 and the metal cylinder 10 and the connector 20. Concrete is readily available, low in cost, and high in strength, and the tower section 100 formed by the concrete, the metal cylinder 10, and the connector 20 is more robust.

[0055] Specifically, the filler 30 can be made of either ordinary concrete or lightweight aggregate concrete. Alternatively, the filler 30 can also be made of either micro-expansion concrete or self-compacting micro-expansion concrete.

[0056] The tower section 100 provided in this application embodiment is provided with a connector 20 that can be connected to the metal section 10, and a filler 30 is provided in the receiving cavity 101 enclosed by the metal section 10. The filler 30 can cover at least part of the connector 20, so that when the tower section 100 is subjected to external force, the metal section 10 can transmit the external force to the nearby filler 30 through the connector 20, so that the filler 30 near the connector 20 can exert its good compressive strength, thereby improving the load-bearing capacity of the tower section 100. Therefore, the tower 1 formed by splicing the tower sections 100 does not need to be connected by welding, which is convenient for construction. Moreover, the two adjacent tower sections 100 have good connection strength, which helps to ensure the forming quality of the tower 1.

[0057] Understandably, during normal operation of a wind turbine generator, the tower 1 is mainly subjected to two stress states along the axial direction Y: tension and compression under bending moment. Since the cross-sectional area of ​​the metal cylinder section 10 is smaller than that of the filler 30, and the bonding force between the metal cylinder section 10 and the filler 30 is relatively small, when the tower in the prior art is under compression or tension, only the metal cylinder section in each tower section bears this tension or pressure. The force on the metal cylinder section cannot be transmitted to the filler. This makes it easy for adjacent tower sections to separate under tension or pressure if they are not connected by welding or flange bolts, which can easily cause the tower to tilt or even collapse.

[0058] Therefore, since the tower section 100 provided in this embodiment is provided with a connector 20 connecting the metal section 10 and the filler 30, when the metal section 10 is subjected to tensile or compressive forces along the axial direction Y, the force it receives can be transmitted to the nearby filler 30 through the connector 20. Since the cross-sectional area of ​​the filler 30 is larger than that of the metal section 10, the filler 30 has good compressive or tensile strength. By setting it in this way, the filler 30 can exert its good compressive and tensile strength, preventing the separation of two adjacent tower sections 100, which is conducive to improving the connection strength between two adjacent tower sections 100, thereby ensuring the forming quality of the tower 1.

[0059] Furthermore, by providing the connector 20, the adhesion between the metal cylinder section 10 and the filler 30 can be increased, which helps to constrain the filler 30 and improve the rigidity of the metal cylinder section 10.

[0060] Optionally, the number of connectors 20 can be set to one, two, or of course, multiple.

[0061] In some embodiments, the tower section 100 formed by this structure can be spliced ​​together to form the tower 1 by snap-fit. In other embodiments, the tower section 100 formed by this structure can also be spliced ​​together to form the tower 1 by adhesive bonding. In still other embodiments, the tower section 100 formed by this structure can also be spliced ​​together to form the tower 1 by snap-fit ​​and adhesive bonding. With the above-mentioned configuration, the operation is simple, the construction and assembly are convenient, the assembly efficiency is improved, and the forming quality of the tower 1 is guaranteed.

[0062] As an alternative implementation, the number of connectors 20 is set to two or more, and at least a portion of the connectors 20 are distributed at Y-intervals along the axial direction of the metal cylinder section 10.

[0063] The first annular body 11 and the second annular body 12 can transfer the load received by the two or more connecting members 20 to the surrounding and connected filler 30, so that the filler 30 around the two or more connecting members 20 can share the load received by the first annular body 11 and the second annular body 12 and exert good tensile or compressive strength, making the connection between two adjacent tower sections 100 more reliable, which is conducive to improving the connection strength between two adjacent tower sections 100, thereby improving the reliability of the tower 1 formed by splicing the tower sections 100.

[0064] Optionally, there may be two connectors 20, or more.

[0065] A portion of the connectors 20 may be spaced apart along the axial direction Y, and another portion of the connectors 20 may be spaced apart along the radial direction X. Of course, a portion of the connectors 20 may also be spaced apart along directions that intersect both the axial direction Y and the radial direction X. Alternatively, all the connectors 20 may be spaced apart along the axial direction Y.

[0066] By setting it in the above manner, the tower section 100 has more filler 30, which can improve the compressive or tensile properties, thereby improving the strength of the tower section 100 and further improving the reliability of the tower section 100, and ensuring the forming quality of the tower section 100 and the tower 1.

[0067] Optionally, at least a portion of the connectors 20 are distributed at equal intervals along the axial direction Y. Of course, the layout design can also be based on the weak points of the tower section 100 after it is subjected to stress.

[0068] Optionally, the structure and shape of two or more connectors 20 can be set to be the same, or they can be set to be different.

[0069] As an alternative implementation, the metal cylinder section 10 is provided with at least one connector 20 on one side in the axial direction Y, and at least one connector 20 on the other side.

[0070] This can be understood as follows: at least one connector 20 is provided at both ends of the metal cylinder section 10 along the axial direction Y. That is, the metal cylinder section 10 has a first end and a second end in the axial direction Y. The minimum distance between the connector 20 provided near the first end and the first end is less than the minimum distance between the connector 20 and the second end. Correspondingly, the minimum distance between the connector 20 provided near the second end and the second end is less than the minimum distance between the connector 20 and the first end.

[0071] By setting it in the above manner, when the tower 1 formed by splicing the tower sections 100 is subjected to tension or pressure, the force on both ends of the metal sections 10 along the axial direction Y can be transmitted to the filler 30 by the connector 20, so as to reduce or even eliminate the force on the metal sections 10, prevent the separation of two adjacent metal sections 10, and improve the connection strength between two adjacent metal sections 10, thereby ensuring the reliability and molding quality of the tower 1.

[0072] Furthermore, it helps reduce the cost of using the connector 20, thereby reducing the cost of the tower section 100.

[0073] Optionally, the metal cylinder section 10 may have one, two or more connectors 20 on one side in the axial direction Y, and one, two or more connectors 20 may be provided on the other side.

[0074] Please see Figures 3 to 8 As an optional implementation, the connector 20 is connected to the first annular body 11 on one side along the radial X direction, and to the second annular body 12 on the other side.

[0075] The connector 20 can be configured to be connected to both the first annular body 11 and the second annular body 12.

[0076] like Figures 3 to 7 As shown, the connector 20 can be disposed in the receiving cavity 101 and connected between the first annular body 11 and the second annular body 12. The connector 20 can be configured as at least one of annular structure, plate structure and strip structure.

[0077] like Figure 8 As shown, the connector 20 can pass through the first annular body 11 and the second annular body 12, so that a part of it is disposed inside the receiving cavity 101 and another part is disposed outside the receiving cavity 101. The connector 20 can be configured as at least one of annular structure, plate structure and strip structure.

[0078] By setting it in this way, both the first annular body 11 and the second annular body 12 are connected to the connector 20, which can not only enhance the strength of the metal cylinder section 10, but also increase the area of ​​the filler 30 that can bear the load, thereby better ensuring the forming quality of the tower cylinder 1.

[0079] Please continue reading. Figures 3 to 8 As an optional implementation, the connector 20 includes a main body 21, a first connecting part 22 and a second connecting part 23. In the radial direction X, the orthographic projection of the main body 21 overlaps with the orthographic projections of the first connecting part 22 and the second connecting part 23. The main body 21 is connected to the first annular body 11 through the first connecting part 22 and to the second annular body 12 through the second connecting part 23.

[0080] In the radial direction X, the orthographic projection of the main body 21 overlaps with the orthographic projections of the first connecting part 22 and the second connecting part 23. This can be understood as the orthographic projection of the main body 21 in the radial direction X having an overlapping portion with the orthographic projection of the first connecting part 22 in the radial direction X, and also having an overlapping portion with the orthographic projection of the second connecting part 23 in the radial direction X.

[0081] For example, the orthographic projection of the main body 21 in the radial X direction falls into the first connecting portion 22 and also into the second connecting portion 23. That is, the length of the first connecting portion 22 and the second connecting portion 23 in the axial Y direction is greater than the length of the main body 21 in the axial Y direction.

[0082] By setting it in the above manner, it is beneficial to increase the connection area between the main body 21 and the first annular body 11 and the second annular body 12, thereby improving the connection strength and facilitating the assembly of the connector 20 and the metal cylinder section 10, which helps to reduce the difficulty of operation.

[0083] Please continue reading. Figures 3 to 7 As an optional implementation, the main body 21, the first connecting part 22 and the second connecting part 23 are all in the form of a ring structure. The main body 21 has the first connecting part 22 at one end in the radial X direction and the second connecting part 23 at the other end. The first connecting part 22 and the second connecting part 23 are both disposed in the receiving cavity 101.

[0084] The first connecting part 22 can be connected to the first annular body 11 by welding or gluing, and the second connecting part 23 can be connected to the second annular body 12 by welding or gluing, so that it can be set in the receiving cavity 101, which helps to ensure the overall aesthetics of the tower section 100.

[0085] Furthermore, by setting the connector 20 as a ring structure, the connection area between the connector 20 and the metal cylinder section 10 is increased. This not only improves the connection strength between the metal cylinder section 10 and the filler 30, thereby increasing the strength of the metal cylinder section 10, but also allows the load on the metal cylinder section 10 to be better transferred to the surrounding filler 30 through the connector 20, thus improving the compressive and tensile properties of the metal cylinder section 10 and improving the reliability of the tower section 100.

[0086] like Figure 6 As shown, the orthographic projection of the connector 20 along the circumference of the metal cylindrical section 10 can be H-shaped, such as... Figure 7 As shown, the orthographic projection of the connector 20 along the circumference of the metal cylindrical section 10 can also be U-shaped, or the orthographic projection of the connector 20 along the circumference of the metal cylindrical section 10 can also be N-shaped.

[0087] like Figure 8 As shown, in one optional embodiment, the main body 21 has a strip-shaped structure, and the main body 21 passes through the first annular body 11 and the second annular body 12 in sequence. The first connecting part 22 is disposed on the side of the first annular body 11 facing away from the receiving cavity 101 and is connected to the main body 21. The second connecting part 23 is disposed on the side of the second annular body 12 facing away from the receiving cavity 101 and is connected to the main body 21.

[0088] The first connecting part 22 can be threaded to the main body part 21, or it can be bonded or welded to the main body part 21. Correspondingly, the second connecting part 23 can be threaded to the main body part 21, or it can be bonded or welded to the main body part 21.

[0089] Optionally, the structures of the first connecting part 22 and the second connecting part 23 can be the same or different.

[0090] This design improves the reliability of the tower section 100 and facilitates the assembly of the connector 20 with the metal section 10, thus reducing operational difficulty.

[0091] Please see Figure 9 and Figure 10 As an optional implementation, one end of the connector 20 along the radial X direction is connected to one of the first annular body 11 and the second annular body 12, and the other end extends into the filler 30 and is spaced apart from the other of the first annular body 11 and the second annular body 12.

[0092] The connector 20 can be configured to connect only to one of the first annular body 11 and the second annular body 12.

[0093] With this configuration, the dimensional accuracy requirements for the connector 20 are lower. It is only necessary to ensure that one end of the connector is connected to one of the first annular body 11 and the second annular body 12, which helps to reduce the difficulty of operation and improve the flexibility of use.

[0094] Furthermore, it facilitates the pouring of filler 30 into the cavity 101, which helps to improve manufacturing efficiency and reduce operational difficulty.

[0095] As an alternative implementation, the connector 20 includes at least one of a stud and a shear key.

[0096] like Figure 9 As shown, the connector 20 can be configured as a stud structure, and the studs may include round head rivets, flat head rivets, semi-hollow rivets, hollow rivets, and locking rivets, etc.

[0097] By setting studs, the connection strength between the metal cylinder section 10 and the filling body 30 can be greatly improved, thereby improving the overall stress performance of the tower cylinder section 100.

[0098] Optionally, the larger diameter portion of the stud can be connected to the first annular body 11 or the second annular body 12, and the smaller diameter portion of the stud can extend into the filler 30. Alternatively, the smaller diameter portion of the stud can be connected to the first annular body 11 or the second annular body 12, and the larger diameter portion of the stud can extend into the filler 30.

[0099] like Figure 9 As shown, the connector 20 can be configured as a shear key structure. The shape of the shear key can be designed according to requirements, which is highly flexible. By setting the shear key, the connection strength between the metal cylinder section 10 and the filling body 30 can be greatly improved, thereby improving the overall stress performance of the tower cylinder section 100.

[0100] Optionally, the connectors 20 can all be set as studs, or all as shear keys, or both studs and shear keys can be set simultaneously. Optionally, the number of studs and shear keys can be set to multiple. The multiple studs and shear keys can be distributed at intervals along the axial direction Y, at intervals along the radial direction X, or at intervals along directions intersecting the axial direction Y and the radial direction X.

[0101] In some embodiments, the connectors 20 provided in the tower section 100 can all be configured to be connected to both the first annular body 11 and the second annular body 12. The orthographic projection of the connectors 20 in the circumferential direction of the metal cylinder section 10 can be any of an H-shaped structure, a U-shaped structure, and an N-shaped structure. For example, all the connectors 20 have an H-shaped orthographic projection in the circumferential direction of the metal cylinder section 10; another example is that all the connectors 20 have a U-shaped orthographic projection in the circumferential direction of the metal cylinder section 10; yet another example is that at least a portion of the connectors 20 have an H-shaped orthographic projection in the circumferential direction of the metal cylinder section 10, and at least a portion of the connectors 20 have a U-shaped orthographic projection in the circumferential direction of the metal cylinder section 10.

[0102] In some embodiments, a portion of the connector 20 provided in the tower section 100 may be configured to connect to both the first annular body 11 and the second annular body 12, while another portion may be configured to connect only to one of the first annular body 11 and the second annular body 12. For example, at least a portion of the connectors 20 are connected to the first annular body 11 and the second annular body 12, and their orthographic projections in the circumferential direction of the metal cylindrical section 10 are all H-shaped structures. At least a portion of the connectors 20 are connected to the first annular body 11 and are configured as studs. For another example, at least a portion of the connectors 20 are connected to the first annular body 11 and the second annular body 12, and their orthographic projections in the circumferential direction of the metal cylindrical section 10 are all H-shaped structures. At least a portion of the connectors 20 are connected to the first annular body 11 and are configured as shear keys. For yet another example, at least a portion of the connectors 20 are connected to the first annular body 11 and the second annular body 12, and their orthographic projections in the circumferential direction of the metal cylindrical section 10 are all H-shaped structures. At least a portion of the connectors 20 are connected to the first annular body 11 and are configured as shear keys. At least a portion of the connectors 20 are connected to the first annular body 11 and are configured as studs.

[0103] Please see Figures 6 to 10 As an optional implementation, the filler 30 has a through hole 301 extending along the axial direction Y of the metal cylinder section 10. In the axial direction Y, the orthographic projection of the connector 20 is offset from the orthographic projection of the through hole 301, and the through hole 301 is configured to pass through the prestressed member 200.

[0104] In the specific implementation process, a pipe body can be pre-embedded in the cavity 101, and then grout can be poured into the cavity 101 to form a filler 30, so that the formed filler 30 has a through hole 301 that runs through the axial direction Y.

[0105] When two or more tower sections 100 are sequentially spliced ​​to form a tower 1, the through holes 301 of each tower section 100 are correspondingly provided to facilitate the insertion of the prestressed member 200. Optionally, the through holes 301 can be distributed at intervals along the circumference of the metal section 10.

[0106] like Figure 5 As shown, when the connector 20 is provided with an annular structure and connected to the structure of the first annular body 11 and the second annular body 12, the connector 20 may be provided with a through hole 201. The through hole 201 is arranged opposite to the through hole 301 so that the prestressed member 200 can pass through the through hole 301 and the through hole 201 in sequence.

[0107] The above-mentioned arrangement facilitates the assembly of prestressed components 200, thereby further improving the connection strength between tower section 100 and tower 1.

[0108] Optionally, in the axial direction Y, the projected area of ​​the through hole 201 is larger than the area of ​​the pipe body passing through the through hole 201, so that there is a gap between the pipe body provided in the through hole 201 and the connector 20, and the poured slurry can pass through this gap, which facilitates the fabrication of the shaped tower section 100.

[0109] Optionally, when the connector 20 is provided with an annular structure and connected to the structure of the first annular body 11 and the second annular body 12, the connector 20 may also be provided with casting holes spaced apart from the through hole 201, so that the cast slurry can pass through the connector 20 to form a filler 30 covering the connector 20, which facilitates construction and improves production efficiency.

[0110] like Figure 2 As shown in the embodiments of this application, a tower 1 is also provided, including tower sections 100 as provided in the above embodiments, wherein the number of tower sections 100 is two or more.

[0111] Two or more tower sections 100 are sequentially spliced ​​along the axial direction Y of the metal section 10. Optionally, two adjacent tower sections 100 can be bonded together, which is convenient for operation, reduces the difficulty of operation, and will not affect the quality of the tower section 100, thereby ensuring the forming quality and reliability of the tower 1.

[0112] Optionally, two adjacent tower sections 100 can be configured as a snap-fit ​​connection, or two adjacent tower sections 100 can be configured as a combination of snap-fit ​​and adhesive connection.

[0113] As an alternative implementation, the tower also includes a prestressed member 200, which passes sequentially through the filler 30 in two or more tower sections 100.

[0114] Optionally, the prestressing member 200 may be configured as a prestressing tendon. Optionally, the number of prestressing members 200 may be multiple, and they may be distributed at intervals along the circumference of the metal cylinder segment 10.

[0115] By setting prestressed components 200, the connection strength of tower 1 can be further improved, thereby further ensuring the forming quality and reliability of tower 1.

[0116] Please see Figure 11 This application also provides a method for forming a tower 1, including the following steps:

[0117] S100, providing two or more tower sections 100, each tower section 100 including a metal section 10, a connector 20 and a filler 30, the metal section 10 including a first annular body 11 and a second annular body 12 distributed at intervals along its own radial direction X, the first annular body 11 and the second annular body 12 enclosing to form a receiving cavity 101, the filler 30 filling the receiving cavity 101 and connecting to the first annular body 11, the second annular body 12 and the connector 20, the filler 30 covering at least a portion of the connector 20.

[0118] S200, apply adhesive to at least one end of the tower section 100 along the axial direction Y of the metal cylinder section 10, and sequentially splice two or more tower sections 100 along the axial direction Y, and connect adjacent tower sections 100 by adhesive.

[0119] The tower 1 formed by the tower 1 forming method provided in this application embodiment is formed by bonding two or more tower sections 100 together, without the need for welding. This does not affect the quality of the tower sections 100 or the tower 1 itself, thus ensuring the forming quality of the tower 1. Furthermore, the bonding method is simple to operate, easy to construct and manufacture, and improves the assembly efficiency of the tower 1. The bonding method does not require high alignment accuracy between the two tower sections 100, which helps to reduce the manufacturing difficulty.

[0120] In step S100, the number of tower sections 100 can be set to two, three or even more, depending on the user's needs.

[0121] In step S200, the adhesive includes epoxy adhesive, filler adhesive, etc.

[0122] This application also provides a wind turbine generator set, including the tower 1 as described in the above embodiments.

[0123] Because the tower 1 provided in this application embodiment can improve its strength and ensure safety and reliability, it can improve the overall strength of the wind turbine generator set and ensure safety and reliability.

[0124] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tower section (100) characterized by, The application relates to a metal cylinder segment (10) comprising a first annular body (11) and a second annular body (12) which are spaced apart along a radial direction (X) of the metal cylinder segment (10) and which enclose a receiving cavity (101); a connecting piece (20) which is arranged at least partially in the receiving cavity (101) and which is connected to at least one of the first annular body (11) and the second annular body (12); and a filling body (30) which is arranged in the receiving cavity (101) and which is connected to the first annular body (11), the second annular body (12) and the connecting piece (20), wherein the filling body (30) at least partially surrounds the connecting piece (20). The number of the connecting pieces (20) is two or more, and at least some of the connecting pieces (20) are spaced apart along an axial direction (Y) of the metal cylinder segment (10). The metal cylinder segment (10) is provided with at least one connecting piece (20) on one side in the axial direction (Y) and with at least one connecting piece (20) on the other side. The connecting piece (20) is connected to the first annular body (11) on one side in the radial direction (X) and to the second annular body (12) on the other side.

2. The tower section (100) according to claim 1, characterized in that The connecting piece (20) comprises a main body (21), a first connecting portion (22) and a second connecting portion (23), wherein the main body (21) is arranged in the radial direction (X) such that the orthographic projection of the main body (21) overlaps the orthographic projections of the first connecting portion (22) and the second connecting portion (23), the main body (21) is connected to the first annular body (11) through the first connecting portion (22) and is connected to the second annular body (12) through the second connecting portion (23).

3. The tower section (100) according to claim 2, characterized in that The main body (21), the first connecting portion (22) and the second connecting portion (23) all have annular structures, the main body (21) is provided with the first connecting portion (22) on one end in the radial direction (X) and with the second connecting portion (23) on the other end, and the first connecting portion (22) and the second connecting portion (23) are arranged in the receiving cavity (101).

4. The tower section (100) according to any one of claims 1 to 3, characterized in that The main body (21) has a strip structure, the main body (21) sequentially passes through the first annular body (11) and the second annular body (12), the first connecting portion (22) is arranged on a side of the first annular body (11) away from the receiving cavity (101) and is connected to the main body (21), and the second connecting portion (23) is arranged on a side of the second annular body (12) away from the receiving cavity (101) and is connected to the main body (21).

5. The tower section (100) according to claim 4, characterized in that The connecting piece (20) is connected to one of the first annular body (11) and the second annular body (12) on one end in the radial direction (X) and extends into the filling body (30) on the other end and is spaced apart from the other one of the first annular body (11) and the second annular body (12).

6. The tower section (100) according to claim 5, characterized in that ​ 7. The tower section (100) of claim 5, characterized in that ​ 8. The tower section (100) according to any one of claims 1 to 3, characterized in that ​ 9. The tower section (100) according to claim 8, characterized in that The connecting piece (20) comprises at least one of a peg and a shear key.

10. The tower section (100) of claim 1, wherein, The filling body (30) has a through hole (301) along an axial direction (Y) of the metal cylinder segment (10), in the axial direction (Y), an orthographic projection of the connecting piece (20) is arranged staggeredly with an orthographic projection of the through hole (301), and the through hole (301) is configured to pass through a prestressed member (200).

11. A tower section (1) characterized in that The tower cylinder (1) comprises two or more tower cylinder segments (100) as claimed in any one of claims 1 to 10.

12. The tower section (1) according to claim 11, characterized in that The tower cylinder (1) further comprises a prestressed member (200) sequentially passing through the filling bodies (30) in the two or more tower cylinder segments (100).

13. A method of forming a tower section (1) characterised by, The tower cylinder (1) comprises: Two or more tower cylinder segments (100) are provided, each of which comprises a metal cylinder segment (10), a connecting piece (20) and a filling body (30), the metal cylinder segment (10) comprises a first annular body (11) and a second annular body (12) spaced apart along a radial direction (X) thereof, the first annular body (11) and the second annular body (12) form an accommodating cavity (101), the filling body (30) fills the accommodating cavity (101) and is connected with the first annular body (11), the second annular body (12) and the connecting piece (20), and the filling body (30) covers at least part of the connecting piece (20); An adhesive is coated on at least one end of the tower cylinder segment (100) along an axial direction (Y) of the metal cylinder segment (10), the two or more tower cylinder segments (100) are sequentially spliced along the axial direction (Y), and the adjacent two tower cylinder segments (100) are connected by the adhesive.

14. A wind power unit, characterized in that The tower cylinder (1) comprises: The tower cylinder (1) comprises:

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