Tower switching section, tower and wind generating set

Abstract

The utility model relates to a tower transfer section, tower and wind generating set, tower transfer section includes: base part, including the casing and a plurality of connecting post, the casing is closed ring shape, the casing is equipped with the butt joint end on its own axial side, the plurality of connecting post is spaced apart in the circumferential direction of casing, and the base part is equipped with the butt joint end on its own axial side. Each connecting column is arranged on one side, deviating from the butt joint end in the axial direction, of the shell, and the connecting columns and the shell are of an integrated structure; the first flange is arranged at the butt joint end; and one side, deviating from the butt joint end, of each connecting column in the axial direction is connected with the corresponding second flange. According to the tower switching section, the tower and the wind generating set provided by the embodiment of the utility model, the tower switching section can meet the use requirements of the tower, and is high in bearing capacity, good in safety performance and low in failure risk.

Description

Technical Field

[0001] This utility model relates to the field of wind power technology, and in particular to a tower transition section, a tower, and a wind turbine generator set. Background Technology

[0002] As the hub height of wind turbines continues to increase, the traditional single-tube steel tower structure faces challenges. To adapt to the ever-increasing hub height requirements, the wind power industry has successively developed truss-type wind turbine solutions. This tower structure features a truss body at the bottom and a yaw system directly or indirectly connected to the top. The truss body and the yaw system are connected via a tower transition section. Wind turbines experience significant fatigue effects under wind loads and mechanical operation. During the structural lifespan, the tower transition section will withstand tens of millions of reciprocating fatigue loads, placing corresponding requirements on the fatigue resistance of various parts of the tower transition section.

[0003] The tower transition section in the relevant technology is welded from steel plates of different thicknesses. It has many welds, poor fatigue resistance, and the performance of the welds is heavily dependent on the quality of the welds. If the welding quality is problematic, the transition section, as a key load-bearing component, faces a significant risk of failure. Utility Model Content

[0004] This utility model embodiment provides a tower transition section, a tower, and a wind turbine generator set. The tower transition section meets the usage requirements of the tower and has high load-bearing capacity, good safety performance, and low failure risk.

[0005] On one hand, according to an embodiment of the present invention, a tower transition section is proposed, comprising: a base part, including a shell and a plurality of connecting columns, the shell being in the shape of a closed ring, the shell having a mating end on one side of its own axial direction, the plurality of connecting columns being spaced apart in the circumferential direction of the shell, each connecting column being disposed on the side of the shell opposite to the mating end in the axial direction and being an integral structure with the shell; a first flange being disposed at the mating end; and a second flange being respectively connected to the side of each connecting column opposite to the mating end in the axial direction.

[0006] According to one aspect of the present utility model, the base part is provided with a clearance opening for each connecting post. The clearance opening extends from the shell to the side where the connecting post is located and penetrates the connecting post. A cable connection part is provided in the clearance opening, and a through hole is provided on the cable connection part that extends axially.

[0007] According to one aspect of the present invention, the cable connection portion is generally annular, and the second flange connected to the same connecting column is coaxially arranged with the cable connection portion.

[0008] According to one aspect of the present invention, the clearance opening is elliptical on the side facing the first flange in the axial direction, the major axis of the elliptical opening is inclined relative to the axial direction, and the major axis of each elliptical opening is converged at one end in the axial direction toward the side where the mating end is located.

[0009] According to one aspect of the present invention, a cavity is provided on the housing. In the circumferential direction, a cavity is provided between two adjacent connecting columns. The cavity is recessed from the side of the housing away from the docking end in the axial direction toward the side where the docking end is located.

[0010] According to one aspect of the present invention, the mating end is an annular surface, and along the axial direction, the orthographic projection of each connecting post at least partially protrudes beyond the orthographic projection of the mating end.

[0011] According to one aspect of the present invention, the centers of the plurality of connecting posts are located on the same pitch circle.

[0012] According to one aspect of the present invention, a plurality of connecting posts are spaced apart and evenly arranged in the circumferential direction.

[0013] According to one aspect of the present invention, each connecting column is provided with a connecting interface, and a reinforcing member is connected between the connecting interfaces of two adjacent connecting columns. The reinforcing member includes at least one of a connecting rod and a reinforcing rib plate.

[0014] According to one aspect of the present invention, the housing includes a plurality of force transmission units distributed sequentially along the circumference, each force transmission unit being connected to one of the connecting columns to form a flow guiding body, the connecting column to which the force transmission unit is connected is an integral structure, and at least two force transmission units are separately arranged and connected to each other.

[0015] According to one aspect of the present invention, the number of force transmission units and connecting columns are the same and they are arranged one-to-one. From the side where the first flange is located to the side where the second flange is located, the width of the flow guiding body in the circumferential direction decreases.

[0016] According to an embodiment of the present invention, a tower transition section is provided, comprising: a base, including a shell and a plurality of connecting columns, the shell being a closed ring, the shell having a mating end on one side of its own axial direction, the plurality of connecting columns being spaced apart in the circumferential direction of the shell, each connecting column being disposed on the side of the shell opposite to the mating end in the axial direction; a first flange being disposed at the mating end; and a second flange being respectively connected to the side of each connecting column opposite to the mating end in the axial direction; wherein, the shell includes a plurality of force transmission units sequentially distributed along the circumferential direction, each force transmission unit being connected to one of the connecting columns to form a flow guiding body, the width of the flow guiding body decreasing in the circumferential direction from the side where the first flange is located to the side where the second flange is located.

[0017] According to one aspect of the present invention, the force transmission unit and the connecting column connected to it are an integral structure.

[0018] In another aspect, according to an embodiment of the present invention, a tower is provided, comprising: a truss body including a plurality of columns and a connecting beam connecting the columns; and the aforementioned tower transition section, wherein each connecting column is connected to one of the columns via a second flange.

[0019] According to another aspect of the present invention, it further includes a tower section, which is disposed on the side of the tower transition section away from the truss body and connected to the first flange.

[0020] According to another aspect of the present invention, the column includes a column body and prestressing tendons disposed within the column body. The column body is connected to a second flange, and the prestressing tendons extend into the connecting column and are connected to the connecting column.

[0021] In another aspect, according to an embodiment of the present invention, a wind turbine generator set is provided, including the tower described above.

[0022] According to the tower transition section, tower, and wind turbine generator provided in this embodiment of the invention, the tower transition section can be used to connect the truss body and the yaw system. The tower transition section includes a base, a first flange, and a second flange. The base includes a shell and multiple connecting columns. The shell is in the shape of a closed ring, and has a mating end at one end along its axial direction. The first flange can be set on the mating end for direct or indirect connection to the yaw system. The multiple connecting columns are spaced apart in the circumferential direction. The second flange on each connecting column can be used to connect with the column of the truss body, thereby fulfilling the connection requirements between the yaw system and the truss body. At the same time, each connecting column is set on the side of the shell away from the mating end along its axial direction and is an integral structure with the shell, which is conducive to molding, requires no welding, has high load-bearing capacity, good safety performance, and low failure risk. Attached Figure Description

[0023] The features, advantages and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of a tower according to an embodiment of the present invention;

[0026] Figure 3 This is an isometric view of the tower transition section according to an embodiment of the present invention;

[0027] Figure 4This is an isometric view of the tower transition section according to another embodiment of the present invention;

[0028] Figure 5 This is a top view of the tower transition section of another embodiment of this utility model.

[0029] in:

[0030] 100-Tower;

[0031] 10-Tower transition section;

[0032] 11-Base section; 111-Shell; 111a-Mating end; 111b-Cavity; 112-Connecting post; 113-Allowance opening; 113a-Oval opening; 114-Cable connection; 114a-Through hole; 115-Connection interface; 1111-Force transmission unit;

[0033] 12-First flange; 13-Second flange;

[0034] 20 - Truss body; 21 - Column; 22 - Connecting beam;

[0035] 30 - Tower section;

[0036] 200 - Nacelle; 300 - Generator; 400 - Impeller; 410 - Hub; 420 - Blade;

[0037] X - Axial direction; Y - Circumferential direction; Z - Radial direction.

[0038] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0039] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown to avoid unnecessarily obscuring the utility model; 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 specific structure of the tower transition section, tower, or wind turbine generator set of this utility model. It should also be noted in the description of this utility model 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 utility model according to the specific circumstances.

[0041] like Figure 1 As shown, one embodiment of this application provides a wind turbine generator set, including a wind turbine foundation, a tower 100, a nacelle 200, a generator 300, and a rotor 400. The tower 100 is connected to the wind turbine foundation, the nacelle 200 is disposed at the top of the tower 100, and the generator 300 is disposed in the nacelle 200. In some examples, the generator 300 may be located outside the nacelle 200; of course, in some examples, the generator 300 may also be located inside the nacelle 200. The rotor 400 includes a hub 410 and a plurality of blades 420 connected to the hub 410. The rotor 400 is connected to the rotor of the generator 300 through the hub 410, thereby driving the rotor of the generator 300 to rotate relative to the stator, thus meeting the power generation requirements of the wind turbine generator set. To improve wind energy utilization, the wind turbine generator set may also include a yaw system, which enables the nacelle 200 to drive the generator 300 and the rotor 400 as a whole to rotate relative to the tower 100, thereby meeting wind demand.

[0042] As the hub height of wind turbine generators continues to increase, the traditional single-tube steel tower structure faces challenges. To adapt to the ever-increasing height requirements of the hub, the wind power industry has successively developed truss-type wind turbine generator solutions. In this type of tower structure, the lower part is the truss body 20, and the upper part is directly or indirectly connected to the yaw system. The truss body 20 and the yaw system are connected through a tower transition section. Wind turbine generators experience significant fatigue effects under wind loads and mechanical operation. During the structural lifespan, the tower transition section will withstand tens of millions of reciprocating fatigue loads, which places corresponding requirements on the fatigue resistance performance of various parts of the tower transition section.

[0043] The tower transition section 10 in the related technology is welded from steel plates of different thicknesses. It has many welds, poor fatigue resistance, and the performance of the welds is heavily dependent on the quality of the welds. If there are problems with the welding quality, the transition section, as a key load-bearing component, will face a greater risk of failure.

[0044] like Figure 2As shown, based on this, one embodiment of this application also provides a new tower 100, which can be used for the wind turbine generator sets provided in the above embodiments, and of course, can also be used for signal towers, observation towers, etc. In order to better understand the tower 100 provided in one embodiment of this utility model, the example of the tower 100 being used for a wind turbine generator set will be used for illustration.

[0045] One embodiment of this application provides a tower 100, including a truss body 20 and a tower transition section 10. The truss body 20 includes a plurality of columns 21 and connecting beams 22 connecting the columns 21. The tower transition section 10 is connected to each column 21. The tower transition section 10 can also be used to connect directly or indirectly to a yaw system to support equipment such as the nacelle 200, generator 300, and wheel hub 410.

[0046] The tower transition section 10 provided in one embodiment of this application can be used in the tower 100 provided in the above embodiments and serve as a component of the tower 100. Of course, it can also be manufactured and sold separately as an independent product. The tower transition section 10 can meet the usage requirements of the tower 100, and has high load-bearing capacity, good safety performance, and low failure risk.

[0047] like Figure 3 as well as Figure 4 As shown, one embodiment of this application provides a tower transition section 10 including a base 11, a first flange 12, and a second flange 13. The base 11 includes a housing 111 and a plurality of connecting posts 112. The housing 111 is in the shape of a closed ring and has a mating end 111a on one side of its own axial direction X. The plurality of connecting posts 112 are spaced apart on the circumferential direction Y of the housing 111. Each connecting post 112 is located on the side of the housing 111 opposite to the mating end 111a in the axial direction X and is integrally formed with the housing 111. The first flange 12 is located on the mating end 111a, and each connecting post 112 is connected to the second flange 13 on the side of its axial direction opposite to the mating end 111a.

[0048] The tower transition section 10 provided in one embodiment of this application, when used in tower 100, includes a base 11, a first flange 12, and a second flange 13. The base 11 includes a shell 111 and multiple connecting columns 112. The shell 111 is in the shape of a closed ring, and has a mating end 111a at one end of its own axial direction X. The first flange 12 can be set on the mating end 111a for direct or indirect connection with the yaw system. The multiple connecting columns 112 are spaced apart in the circumferential direction Y. The second flange 13 set on each connecting column 112 can be used to connect with the column 21 of the truss body 20, thereby realizing the connection requirements between the yaw system and the truss body 20. At the same time, each connecting column 112 is set on the side of the shell 111 away from the mating end 111a in the axial direction X and is an integral structure with the shell 111, which is conducive to forming, does not require welding, has high load-bearing capacity, good safety performance, and low failure risk.

[0049] Optionally, each connecting post 112 is an integral structure with the housing 111. It can be a partial integral structure with the housing 111, or it can be an integral structure with the entire housing 111. That is to say, the housing 111 and the connecting post 112 are an integral structure. The housing 111 itself can be an integral structure, or it can be a separate structure connected to the whole by means of fasteners or other methods.

[0050] Optionally, the housing 111 can be an annular shape with a predetermined height along the axial direction X. Of course, in some embodiments, a polygonal annular shape can also be used. In one embodiment of this application, an annular shape can be used to reduce the load it bears.

[0051] Optionally, the number of connecting columns 112 can be three, four or more, depending on the number of columns 21 included in the truss body 20, and can be four.

[0052] Optionally, the multiple connecting posts 112 can be spaced apart and evenly arranged in the circumferential Y direction of the housing 111.

[0053] In some optional embodiments, the tower transition section 10 provided in one embodiment of this application has a base part 11 with a clearance opening 113 corresponding to each connecting post 112. The clearance opening 113 extends from the shell 111 to the side where the connecting post 112 is located and penetrates the connecting post 112. A cable connection part 114 is provided in the clearance opening 113, and a through hole 114a is provided on the cable connection part 114 to penetrate along the axial direction X.

[0054] The shape of the through hole 114a can be circular, elliptical, or polygonal.

[0055] One embodiment of this application provides a tower transition section 10, which, by providing a clearance opening 113 on the base 11 and a cable connection portion 114 within the clearance opening 113, can provide fixed support for the prestressing tendons installed in the columns 21, ensuring the installation and fixation of the prestressing tendons and improving the connection strength between the tower transition unit and each column 21 in the truss body 20. Furthermore, by extending the clearance opening 113 from the shell 111 towards the side where the connecting column 112 is located and penetrating the connecting column 112, the connection requirements between the connecting column 112 and the shell 111 are met, allowing for a smooth transition between the end of the connecting column 112 facing the first flange 12 in the axial direction X and the shell 111. This facilitates the formation of an integral structure of the base 11 and reduces the probability of stress concentration.

[0056] In some optional embodiments, the tower transition section 10 provided in one embodiment of this application has a cable connection portion 114 that is generally annular, and the second flange 13 connected to the same connecting column 112 is coaxially arranged with the cable connection portion 114.

[0057] The cable connection 114 can be in the shape of a circular ring or a polygonal ring, depending on the structural form of the connecting post 112.

[0058] For example, if the end of the column 21 that is away from the first flange 12 in the axial direction X is cylindrical, the cable connection 114 can be annular and coaxially arranged with the column 21.

[0059] Prestressing tendons can be installed inside the column 21. In one embodiment of this application, the tower transition section 10 is designed so that the cable connection part 114 is in a ring shape. The second flange 13 connected to the same connecting column 112 is coaxially arranged with the cable connection part 114. This ensures that the tower transition section 10 can be connected to the column 21 and the prestressing tendons simultaneously, while also facilitating the tensioning of the prestressing tendons and ensuring the load-bearing capacity of the truss body 20.

[0060] Optionally, the cable connector 114 and the connecting post 112 can be an integral structure, which is conducive to molding and can ensure the connection strength between them.

[0061] In some alternative embodiments, the tower transition section 10 provided in one embodiment of this application has an elliptical opening 113 on the side of the first flange 12 facing the axial direction X. The major axis of the elliptical opening 113a is inclined relative to the axial direction X, and the major axis of each elliptical opening 113a is converged at one end of the axial direction X toward the side where the docking end 111a is located.

[0062] The tower transition section 10 provided in one embodiment of this application, through the above-described configuration, can be adapted to the integral molding method between the shell 111 and the connecting column 112, which is conducive to avoiding the opening 113 and ensuring the installation requirements of the prestressing tendons. At the same time, the above-described configuration can also ensure that the tower transition section 10 has regular external dimensions and good force transmission effect.

[0063] In some alternative embodiments, the tower transition section 10 provided in one embodiment of this application has a cavity 111b on the housing 111. In the circumferential Y direction, a cavity 111b is provided between two adjacent connecting columns 112. The cavity 111b is recessed from the side of the housing 111 away from the docking end 111a in the axial X direction toward the side where the docking end 111a is located.

[0064] The bottom wall of the cavity 111b can be either a U-shaped surface or an arc surface, and can be an arc surface. When it is an arc surface, it can be a circular arc surface or an elliptical arc surface.

[0065] In one embodiment of this application, the tower transition section 10 is provided. Since the area between two adjacent connecting columns 112 is not the main force flow transmission area, by providing a cavity 111b between two adjacent connecting columns 112, the weight requirement can be reduced, the amount of material used can be reduced, and the load-bearing capacity of the tower transition section 10 can be optimized while ensuring the reduction of material usage by utilizing the stability of the arch.

[0066] like Figure 5 As shown, in some optional embodiments, the tower transition section 10 provided in one embodiment of this application has a docking end 111a in the shape of an annular surface, and along the axial direction X, the orthographic projection of each connecting column 112 at least partially protrudes beyond the orthographic projection of the docking end 111a.

[0067] In other words, one end of each connecting post 112 can be smoothly connected to the housing 111, the other end of each connecting post 112 extends away from the first flange 12 along the axial X direction, and the ends of each connecting post 112 away from the first flange 12 on the shaft are dispersed away from each other.

[0068] Because there is a radial dimension change between the truss body 20 and the yaw system, the above-mentioned arrangement allows the tower transition section 10 to adapt to the radial dimension change between the truss body 20 and the yaw system, ensuring the transition requirements and facilitating the load transfer effect.

[0069] In some alternative embodiments, in one embodiment of this application, the tower transition section 10 has multiple connecting posts 112 whose centers are located on the same pitch circle.

[0070] By ensuring that the centers of the connecting columns 112 are located on the same pitch circle, the radial Z dimension of the connecting columns 112 is consistent, as is the dimension of the connecting columns protruding from the housing 111 in the radial Z direction. This ensures that the overall dimensions of the tower transition section 10 are regular, which is beneficial for molding.

[0071] In some optional embodiments, one embodiment of this application provides a tower transition section 10 in which multiple connecting columns 112 are spaced apart and evenly arranged in the circumferential Y direction. This arrangement ensures uniformity of load-bearing capacity in different areas of the tower transition section 10, thereby improving its service life.

[0072] In some optional embodiments, the tower transition section 10 provided in one embodiment of this application has a connection interface 115 on each connecting column 112, and a reinforcing member (not shown) is connected between the connection interfaces 115 of two adjacent connecting columns 112. The reinforcing member includes at least one of a connecting rod and a reinforcing rib plate.

[0073] The connection interface 115 includes, but is not limited to, structures such as connecting ears and connecting seats. Connecting holes may be provided on the connecting ears and connecting seats to connect with the connecting rod and reinforcing rib plate through connecting parts such as bolts and pins.

[0074] One embodiment of this application provides a tower transition section 10, which, by setting a connection interface 115 and connecting a reinforcing member to the connection interface 115, can connect two adjacent connecting columns 112 into a whole through the reinforcing member, thereby reducing the deformation during casting, transportation and hoisting of large-span structures and reducing the installation difficulty of the tower transition frame.

[0075] The tower transition section 10 provided in one embodiment of this application can be formed by casting or other methods, and has high strength and is easy to form.

[0076] Reference Figure 3 and Figure 4 In some possible embodiments, the tower transition section 10 provided in one embodiment of this application includes a housing 111 comprising a plurality of force transmission units 1111 sequentially distributed along the circumferential Y direction. Each force transmission unit 1111 is connected to one of the connecting columns 112 to form a flow guiding body, and the force transmission unit 1111 and the connecting column 112 connected to it are an integral structure. The above arrangement facilitates the smoothness of force flow transmission.

[0077] In some alternative embodiments, the tower transition section 10 provided in one embodiment of this application may have each force transmission unit 1111 as an integral structure.

[0078] Of course, in some embodiments, at least two force transmission units 1111 can be separately arranged and connected, for example, they can be connected by fasteners such as bolts. With the above arrangement, it can also be ensured that the connecting column 112 and the shell are an integral structure, and at least two flow guiding bodies can be manufactured separately and then connected into a whole.

[0079] In some optional embodiments, the tower transition section 10 provided in one embodiment of this application has the same number of force transmission units 1111 and connecting columns 112 and is arranged one-to-one. From the side where the first flange 12 is located to the side where the second flange 13 is located, the width of the flow guide body in the circumferential Y direction tends to decrease.

[0080] The decreasing trend can be understood as a gradual decrease, a segmented decrease, or a decrease from the side where the first flange 12 is located to the side where the second flange 13 is located. The guide body can first reduce its width in the circumferential Y direction to a certain width dimension, and then maintain that width dimension for the remaining portion. For example, such as... Figure 3 As shown, the flow guide body starts from one side of the first flange 111 and moves towards the side 12 where the second flange is located. Its width in the circumferential Y direction gradually decreases to a certain width dimension and then remains unchanged at that width dimension.

[0081] The tower transition section 10 provided in one embodiment of this application, through the above-described configuration, enables the tower transition section 10 to gradually narrow and divert the force load to each connecting column 112 according to the transmission direction of the force load, thereby ensuring the transmission effect of the force load and ensuring the smoothness of the force flow transmission.

[0082] On the other hand, one embodiment of this application also provides a tower transition section 10, including a base 11, a first flange 12, and a second flange 13. The base 11 includes a housing 111 and a plurality of connecting posts 112. The housing 111 is in the shape of a closed ring and has a mating end 111a on one side of its own axial direction X. The plurality of connecting posts 112 are spaced apart on the circumferential direction Y of the housing 111, and each connecting post 112 is located on the side of the housing 111 opposite to the mating end 111a in the axial direction X. The first flange 12 is located on the mating end 111a, and each connecting post 112 is connected to the second flange 13 on the side of the housing 111 opposite to the mating end 111a in the axial direction X. The housing 111 includes a plurality of force transmission units 1111 distributed sequentially along the circumferential direction Y. Each force transmission unit 1111 is connected to one of the connecting posts 112 to form a flow guiding body. From the side where the first flange 12 is located to the side where the second flange 13 is located, the width of the flow guiding body in the circumferential direction Y decreases.

[0083] One embodiment of this application provides a tower transition section 10, in which a first flange 12 can be used to directly or indirectly connect to a yaw system. Multiple connecting columns 112 are spaced apart in the circumferential Y direction. A second flange 13 on each connecting column 112 can be used to connect to the column 21 of the truss body 20, thereby fulfilling the connection requirement between the yaw system and the truss body 20. Simultaneously, the shell 111 includes multiple force transmission units 1111 sequentially distributed along the circumferential Y direction. Each force transmission unit 1111 is connected to one of the connecting columns 112 to form a flow guiding body. From the side where the first flange 12 is located to the side where the second flange 13 is located, the width of the flow guiding body in the circumferential Y direction decreases, allowing the tower transition section 10 to gradually narrow and divert the force load to each connecting column 112 according to the transmission direction of the force load, ensuring the transmission effect of the force load and the smoothness of the force flow transmission.

[0084] In some alternative embodiments, the tower transition section 10 provided in one embodiment of this application has a force transmission unit 1111 and a connecting column 112 connected to it as an integral structure.

[0085] The above configuration facilitates the formation of the tower transition section 10, resulting in high load-bearing capacity and good safety performance.

[0086] The tower 100 provided in one embodiment of this application includes the tower transition section 10 provided in the above embodiments. The second flange 13 provided on each connecting column 112 can be used to connect with the column 21 of the truss body 20, thereby realizing the connection requirements between the yaw system and the truss body 20. At the same time, each connecting column 112 is provided on the side of the shell 111 opposite to the docking end 111a in the axial direction X and is an integral structure with the shell 111, which is conducive to forming, does not require welding, has high load-bearing capacity, good safety performance, and low failure risk.

[0087] like Figure 2 As shown, as some optional embodiments, the tower 100 provided in one embodiment of this application may further include a tower section 30, which is disposed on the side of the tower transition section 10 away from the truss body 20 and connected to the first flange 12.

[0088] In one embodiment of this application, a tower 100 is provided. By setting a tower section 30, the tower transition section 10 can be indirectly connected to the yaw system through the tower section 30, which is beneficial to meeting the connection requirements between the tower transition section 10 and the yaw system.

[0089] In some alternative embodiments, the tower 100 provided in one embodiment of this application includes a column 21 comprising a column body and prestressing tendons (not shown) disposed within the column body. The column body is connected to a second flange 13, and the prestressing tendons extend into and are connected to the connecting column 112.

[0090] When the tower transition section 10 includes the cable connection part 114, the prestressing tendon can extend into the connecting column 112 and connect with the cable connection part 114 to ensure the fixation and tension requirements of the prestressing tendon.

[0091] In one embodiment of this application, a tower 100 is provided. Through the above-described configuration, the column 21 can be doubly connected to the tower transition section 10 via the column body and prestressed tendons, ensuring connection strength and facilitating load transfer.

[0092] One embodiment of this application also provides a wind turbine generator set, including the tower 100 provided in the above embodiments, which has strong load-bearing capacity, high safety, and better power generation efficiency.

[0093] Although the present invention 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 the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention 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 transition section, characterized in that, include: The base includes a housing and multiple connecting posts. The housing is in the shape of a closed ring and has a mating end on one side of its own axial direction. The multiple connecting posts are spaced apart in the circumferential direction of the housing. Each connecting post is located on the side of the housing opposite to the mating end in the axial direction and is an integral structure with the housing. A first flange is disposed at the mating end; The second flange is connected to each of the connecting posts on the side opposite to the mating end in the axial direction.

2. The tower transition section according to claim 1, characterized in that, The base is provided with a clearance opening for each of the connecting posts. The clearance opening extends from the housing towards the side where the connecting post is located and passes through the connecting post. A cable connection part is provided in the clearance opening, and a through hole is provided on the cable connection part along the axial direction.

3. The tower transition section according to claim 2, characterized in that, The cable connection is generally ring-shaped, and the second flange connected to the same connecting column is coaxially arranged with the cable connection.

4. The tower transition section according to claim 2, characterized in that, The clearance opening is elliptical on the side of the axial direction facing the first flange. The major axis of the elliptical opening is inclined relative to the axial direction, and the major axis of each elliptical opening is converged at one end of the axial direction toward the side where the mating end is located.

5. The tower transition section according to claim 1, characterized in that, The housing is provided with a cavity. In the circumferential direction, the cavity is provided between two adjacent connecting columns. The cavity is recessed from the side of the housing away from the docking end in the axial direction toward the side where the docking end is located.

6. The tower transition section according to claim 1, characterized in that, The docking end is an annular surface, and along the axial direction, the orthographic projection of each of the connecting posts at least partially protrudes beyond the orthographic projection of the docking end.

7. The tower transition section according to claim 1, characterized in that, The centers of the multiple connecting posts are located on the same pitch circle; And / or, the plurality of the connecting posts are spaced apart and evenly arranged in the circumferential direction.

8. The tower transition section according to any one of claims 1 to 7, characterized in that, Each of the connecting columns is provided with a connecting interface, and a reinforcing member is connected between the connecting interfaces of two adjacent connecting columns. The reinforcing member includes at least one of a connecting rod and a reinforcing rib plate.

9. The tower transition section according to any one of claims 1 to 7, characterized in that, The housing includes multiple force transmission units distributed sequentially along the circumference. Each force transmission unit is connected to one of the connecting columns to form a flow guide body. The connecting column to which the force transmission unit is connected is an integral structure. At least two force transmission units are separately arranged and connected to each other.

10. The tower transition section according to claim 9, characterized in that, The number of force transmission units is the same as the number of connecting columns and they are arranged one-to-one. From the side where the first flange is located to the side where the second flange is located, the width of the flow guide body in the circumferential direction decreases.

11. A tower transition section, characterized in that, include: The base includes a housing and a plurality of connecting posts. The housing is in the shape of a closed ring and has a mating end on one side of its own axial direction. The plurality of connecting posts are spaced apart in the circumferential direction of the housing, and each connecting post is located on the side of the housing opposite to the mating end in the axial direction. A first flange is disposed at the mating end; The second flange is connected to the side of each of the connecting columns that is axially opposite to the mating end. The housing includes multiple force transmission units distributed sequentially along the circumference. Each force transmission unit is connected to one of the connecting columns to form a flow guide body. From the side where the first flange is located to the side where the second flange is located, the width of the flow guide body decreases in the circumference direction.

12. The tower transition section according to claim 11, characterized in that, The force transmission unit and the connecting column to which it is connected are an integral structure.

13. A tower, characterized in that, include: The truss body includes multiple columns and connecting beams that connect the columns; In the tower transition section as described in any one of claims 1 to 12, each of the connecting columns is connected to one of the columns via the second flange.

14. The tower according to claim 13, characterized in that, The tower also includes a tower section, which is located on the side of the tower transition section away from the truss body and connected to the first flange; And / or, the column includes a column body and prestressing tendons disposed within the column body, the column body being connected to the second flange, and the prestressing tendons extending into the connecting column and connected to the connecting column.

15. A wind turbine generator set, characterized in that, Including the tower as described in claim 13 or 14.

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