Tower sections, towers and wind turbines

Abstract

The present invention relates to a tower section, a tower and a wind turbine generator set, wherein the tower section comprises: a barrel body, which is annular as a whole and comprises alternately arranged straight portions and protruding portions in its circumferential direction, wherein the adjacently arranged straight portions and protruding portions are connected to each other, and the protruding portions at least partially protrude from the straight portions in the radial direction of the barrel body; and an end flange, wherein the two ends of the barrel body in its axial direction are respectively connected with the end flanges. The tower formed by the tower section provided in the embodiment of the present invention can meet the load requirements, and the material usage is small and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a tower section, a tower and a wind turbine generator set. Background Art

[0002] With the development and progress of wind power technology, the technical route has been continuously transformed from extensive to refined, and more lean design is becoming more and more important. The tower, as a large component of a wind turbine, is an important component of the unit when it is in service.

[0003] The main function of the tower is to support the heavy parts of the wind turbine generator set, such as the nacelle, generator and impeller. Therefore, the load-bearing capacity of the tower is one of the important factors to ensure the safety performance of the wind turbine generator set. The cross-section of the tower section of the existing tower is mostly a smooth circular cross-section. Although it can meet the load requirements of the tower, it also has the disadvantages of large material usage and high cost.

[0004] Therefore, a new tower section, tower and wind turbine generator set are urgently needed. Summary of the invention

[0005] The embodiments of the present invention provide a tower section, a tower and a wind turbine generator set. The tower formed by the tower section can meet the load requirements, and the material usage is small and the cost is low.

[0006] On the one hand, according to an embodiment of the present invention, a tower section is proposed, comprising: a barrel body, the barrel body is annular as a whole and includes alternating straight portions and protruding portions in its circumferential direction, the adjacent straight portions and protruding portions are connected to each other, and the protruding portions at least partially protrude from the straight portions in the radial direction of the barrel body; and end flanges, the barrel body being connected to end flanges at both ends of its axial direction.

[0007] According to one aspect of the embodiments of the present invention, the linear portions of the barrel body have the same structure and are spaced apart in the circumferential direction; and / or the protruding portions of the barrel body have the same structure and are spaced apart in the circumferential direction.

[0008] According to one aspect of the embodiment of the present invention, the orthographic projection of the protrusion in the axial direction extends along a curved trajectory, and the curved trajectory includes an arc segment.

[0009] According to one aspect of an embodiment of the present invention, the orthographic projection of the protrusion in the axial direction extends along a broken line trajectory, which includes a first line segment and a second line segment that are intersectingly arranged, an end of the first line segment away from the second line segment is connected to the orthographic projection of one of the straight line portions adjacent to the protrusion, and an end of the second line segment away from the first line segment is connected to the orthographic projection of another straight line portion adjacent to the protrusion.

[0010] According to one aspect of an embodiment of the present invention, the barrel body has more than two tower segments in the circumferential direction, each tower segment includes alternating straight portions and protruding portions, the end flange has more than two flange units in the circumferential direction, each tower segment is respectively connected to flange units at both ends in the axial direction and together form a segment assembly, the tower section also includes a vertical flange group, and in the circumferential direction, two adjacent segment assemblies are connected by the vertical flange group.

[0011] According to one aspect of the embodiment of the present invention, the vertical flange group has a mounting section and a transition section, the transition section is provided with a mounting section at at least one axial end, and the radial thickness of the mounting section is greater than the radial thickness of the transition section.

[0012] According to one aspect of an embodiment of the present invention, the flange unit includes an arcuate flange segment and a connecting segment stacked on the arcuate flange segment, the connecting segment is connected to the tower segment, the arcuate flange segments are spaced apart from each other in the circumferential direction, a first connecting body is provided between two adjacent arcuate flange segments and the segments are connected to each other through the first connecting body, a receiving groove is provided on the vertical flange group, the connecting segment is at least partially received in the receiving groove and is connected to the vertical flange group.

[0013] According to one aspect of an embodiment of the present invention, the vertical flange group includes a first vertical flange and a second vertical flange which are circumferentially arranged opposite to each other and connected to each other, the first vertical flange is connected to one of two adjacent slice assemblies, and the second vertical flange is connected to the other of the two adjacent slice assemblies, and the first vertical flange and the second vertical flange are both provided with accommodating grooves.

[0014] According to one aspect of the embodiment of the present invention, the first vertical flange protrudes from the connected connection section in the circumferential direction, the second vertical flange protrudes from the connected connection section in the circumferential direction, and the first vertical flange and the second vertical flange are butted against each other in the circumferential direction.

[0015] According to one aspect of the embodiment of the present invention, a first notch is provided at the joint between the first vertical flange and the second vertical flange, a second connector is provided in the first notch, and the vertical flange group and the end flange are connected to each other through the second connector.

[0016] According to one aspect of the embodiment of the present invention, a second notch is provided at the joint between the connecting section and the tower segment, a third connector is provided in the second notch, and the connecting section and the tower segment are connected via the third connector.

[0017] In another aspect, a tower is provided according to an embodiment of the present invention, comprising the above-mentioned tower section.

[0018] In yet another aspect, a wind turbine generator set is provided according to an embodiment of the present invention, comprising the tower described above.

[0019] According to the tower section, tower and wind turbine generator set provided by the embodiment of the present invention, the tower section includes a barrel body and an end flange, and the barrel body is connected to the end flanges at both ends of its own axial direction, and the setting of the end flange is conducive to the connection requirement between the tower section and the adjacent tower section when it is used to form a tower. Since the barrel body is annular as a whole and includes alternating straight parts and protruding parts in its own circumferential direction, the adjacent straight parts and protruding parts are connected to each other, and the protruding parts at least partially protrude from the straight parts in the radial direction of the barrel body, that is, the wall of the barrel body can be in a concave-convex distribution structure, which effectively increases the bending stiffness of the tower section, so that the stiffness of the tower formed by the tower section is higher. Compared with the prior art, under the same load bearing capacity requirements, the material usage is smaller and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] Figure 1 is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of a tower according to an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of a tower section according to an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the cooperation between the barrel body and the end flange of one embodiment of the present invention;

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 It is a partial structural diagram of the barrel body and the end flange when they are matched in one embodiment of the present invention;

[0027] Figure 7 It is a partial structural diagram of the barrel body and the end flange when they are matched in another embodiment of the present invention;

[0028] Figure 8 is a schematic structural diagram of an end flange according to an embodiment of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a barrel body according to another embodiment of the present invention;

[0030] Fig.10 It is a schematic diagram of the cooperation between the cylinder body and the vertical flange assembly according to one embodiment of the present invention;

[0031] Fig.11It is a schematic diagram of the cooperation between the end flange and the vertical flange group according to one embodiment of the present invention;

[0032] Fig.12 is a partial structural schematic diagram of a tower section of another embodiment of the present invention;

[0033] Fig.13 is a partial structural schematic diagram of a tower section of another embodiment of the present invention;

[0034] Fig.14 is a partial structural schematic diagram of a tower section of another embodiment of the present invention;

[0035] Fig.15 It is a partial structural diagram of the end flange and the tower section in cooperation with one embodiment of the present invention;

[0036] Fig.16 It is a partial structural diagram of the cooperation between the end flange and the tower section according to another embodiment of the present invention.

[0037] 1- Tower;

[0038] 100-tower section;

[0039] 10-tube body; 11-straight part; 12-protruding part; 121-first line segment; 122-second line segment; 10a-tower segment;

[0040] 20-end flange; 21-flange unit; 211-arc flange section; 212-connecting section; 22-first connecting body; 20a-flange body; 20b-connecting ring;

[0041] 30-vertical flange group; 30a-installation section; 30b-transition section; 30c-accommodation groove; 31-first vertical flange; 32-second vertical flange; 33-second connector;

[0042] 40-third connector;

[0043] X-circumferential direction; Y-axial direction; Z-radial direction;

[0044] 2-nacelle; 3-generator; 4-impeller; 401-hub; 402-blade.

[0045] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures of the tower sections, towers and wind turbines of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] In order to better understand the present invention, Figures 1 to 16 A tower section, a tower and a wind turbine generator set according to embodiments of the present invention are described in detail.

[0049] like Figure 1 As shown, an embodiment of the present invention provides a wind turbine generator set, including a tower 1, a nacelle 2, a generator 3 and an impeller 4. The nacelle 2 is arranged at the top of the tower 1, and the generator 3 is arranged in the nacelle 2. In some examples, the generator 3 can be located outside the nacelle 2. Of course, in some embodiments, the generator 3 can also be arranged inside the nacelle 2. The impeller 4 includes a hub 401 and a plurality of blades 402 connected to the hub 401. The impeller 4 is connected to the rotor of the generator 3 through its hub 401. When the wind acts on the blades 402, the entire impeller 4 and the rotor of the generator 3 are driven to rotate relative to the stator, thereby meeting the power generation requirements of the wind turbine generator set.

[0050] The main function of the tower 1 is to support the nacelle 2, the generator 3 and the impeller 4 of the wind turbine generator set. Therefore, the load-bearing capacity of the tower 1 is one of the important factors to ensure the safety performance of the wind turbine generator set. The cross-section of the tower section corresponding to the existing tower 1 is mostly a smooth circular cross-section. If the load-bearing requirements are to be met, the wall thickness of the tube body needs to be set thicker, which has the defects of large material usage and high cost. In addition, the structural form of this type of tower section, during molding, is limited by the process and needs to be spliced ​​by multiple tube sections in its own axial direction. There are many circumferential welds, which affects the overall stiffness of the tower section and is complicated in process.

[0051] like Figure 2 As shown, based on the above problems, an embodiment of the present invention provides a tower 1, which includes a plurality of stacked tower sections 100, at least one tower section 100 is a new tower section, so that the tower 1 as a whole can meet the load requirements, while the material usage is small and the cost is low.

[0052] like Figures 3 to 5 As shown, the tower section 100 provided in the embodiment of the present invention includes a barrel body 10 and an end flange 20. The barrel body 10 is annular as a whole and includes alternately arranged straight portions 11 and protruding portions 12 in its own circumferential direction X. The adjacent straight portions 11 and protruding portions 12 are connected to each other, and the protruding portions 12 are at least partially protruded from the straight portions 11 in the radial direction Z of the barrel body 10. The barrel body 10 is connected to the end flanges 20 at both ends in its own axial direction Y.

[0053] The tower section 100 provided in the embodiment of the present invention and the arrangement of the end flange 20 are conducive to the connection requirement between the tower section 100 and the adjacent tower section 100 when used to form the tower 1. Since the barrel body 10 is annular as a whole and includes alternating straight portions 11 and protruding portions 12 in its own circumferential direction X, the adjacent straight portions 11 and protruding portions 12 are connected to each other, and the protruding portions 12 are at least partially protruding from the straight portions 11 in the radial direction Z of the barrel body 10, that is, the wall of the barrel body 10 can be in a concave-convex distribution structure, which effectively increases the bending stiffness of the tower section 100, so that the stiffness of the tower 1 formed by the tower section 100 is higher. Compared with the prior art, under the same load bearing capacity requirements, the material usage is smaller and the cost is low.

[0054] As an optional implementation, the tower section 100 provided in the embodiment of the present invention, the number of straight portions 11 and protruding portions 12 on the tower body 10 can be set according to the radial Z dimension and bearing capacity requirements of the tower section 100. In some optional embodiments, the number of straight portions 11 and protruding portions 12 can be the same.

[0055] In some embodiments, the protrusion 12 can be arranged to protrude inward from the straight portion 11 in the radial direction Z. Of course, in some embodiments, the protrusion 12 can be arranged to protrude outward from the straight portion 11 in the radial direction Z. The specific setting can be based on the bearing strength.

[0056] In some optional embodiments, the structures of the straight portions 11 of the barrel body 10 are the same and are spaced apart in the circumferential direction X. The above arrangement facilitates the processing and forming of the barrel body 10 and enables the load-bearing capacity of the barrel body 10 to be uniform at various locations in the circumferential direction X.

[0057] In some optional embodiments, the protrusions 12 of the barrel body 10 have the same structure and are spaced apart in the circumferential direction X. The above arrangement is conducive to the processing and forming of the barrel body 10 and is more conducive to ensuring the uniformity of the bearing capacity of the barrel body 10 at various locations in the circumferential direction X. This can not only increase the load bearing capacity of the tower section 100 as a whole, but also save materials better than the prior art.

[0058] In some optional embodiments, the orthographic projection of the protrusion 12 on the axial direction Y extends along a curved track, and the curved track includes an arc segment. Exemplarily, the arc segment included in the curved track can be a circular arc segment. In some embodiments, the arc segment included can also be an elliptical arc segment.

[0059] As an optional embodiment, the number of arc segments included in the curved track may be one, and both ends of the arc segment may be respectively connected to the positive projection of one of the straight line portions 11. Optionally, the arc segment may protrude from the projection of the adjacent straight line portion 11 in the radial direction Z outward or in the direction away from the axis of the barrel body 10. Of course, in some examples, the arc segment may also protrude from the projection of the adjacent straight line portion 11 in the radial direction Z inward or in the direction close to the axis of the barrel body 10.

[0060] It is understandable that limiting the number of arc segments included in the curved track to one is only an optional implementation. In some other examples, the number of arc segments included in the curved track can also be limited to three, and the three arc segments can be connected in sequence and simultaneously protrude inwardly or outwardly from the projection of the adjacent straight line portion 11. Of course, if Figure 6 As shown, when the number of arc segments included in the curved trajectory is three, some of the arc segments can be set to protrude inward from the projection of the straight portion 11, and some of the arc segments can be set to protrude outward from the projection of the straight portion 11, as long as it can facilitate the forming of the tower section 100 and ensure the bearing capacity requirements of the tower section 100.

[0061] It is understandable that the orthographic projection of the protrusion 12 in the axial direction Y extending along a curved track is only an optional implementation. Figure 7As shown, in some embodiments, the orthographic projection of the protrusion 12 in the axial direction Y can also extend along a broken line trajectory. Through the above arrangement, the wall of the barrel body 10 can also be made to have a concave-convex distribution structure, which effectively increases the bending rigidity of the tower section 100, thereby making the rigidity of the tower 1 formed by the tower section 100 higher.

[0062] As an optional implementation, the broken line trajectory may include a first line segment 121 and a second line segment 122 intersecting each other. Optionally, the first line segment 121 and the second line segment 122 may intersect at one end close to each other, the end of the first line segment 121 away from the second line segment 122 is connected to the orthographic projection of one of the straight line portions 11 adjacent to the protruding portion 12, and the end of the second line segment 122 away from the first line segment 121 is connected to the orthographic projection of another straight line portion 11 adjacent to the protruding portion 12. The stiffness requirements of the tower section 100 are met, so that the formed tower 1 has a higher load-bearing capacity.

[0063] The tower segment 100 provided in the embodiment of the present invention has a tower segment 100 in which the extension trajectory of the positive projection of the protrusion 12 on the axial direction Y extends along a curved trajectory or a broken line trajectory. The straight portion 11 and the protrusion 12 are alternately arranged, so that it is not restricted by the full circular tower manufacturing equipment. During manufacturing, its length on the axial direction Y can be made longer than that of the ordinary circular tower segment 100 in the prior art, thereby reducing the number of circumferential welds and reducing the difficulty and cost of processing.

[0064] like Figure 8 As shown, as an optional embodiment, the tower section 100 provided by the present invention may include an end flange 20 which may include a flange body 20a and a connecting ring 20b stacked with the flange body 20a in the axial direction Y, and the end flange 20 is connected to the tower body 10 via the connecting ring 20b.

[0065] like Fig. 9 as well as Fig.10 As shown, in some optional embodiments, the tower segment 100 provided by the embodiment of the present invention may have a tower body 10 with more than two tower segments 10a in the circumferential direction X, each tower segment 10a includes alternating straight portions 11 and protruding portions 12, and the end flange 20 has more than two flange units 21 in the circumferential direction X. Each tower segment 10a is respectively connected to flange units 21 at both ends in the axial direction Y and together form a segment assembly. The tower segment 100 also includes a vertical flange group 30. In the circumferential direction X, two adjacent segment assemblies are connected by the vertical flange group 30.

[0066] The tower segment 100 provided in the embodiment of the present invention includes more than two segment components and is connected by a vertical flange group 30, so that when the radial dimension of the tower segment 100 is too large, it can be segmented for easy transportation.

[0067] like Fig.11 As shown, in some optional embodiments, the flange unit 21 includes an arcuate flange segment 211 and a connecting segment 212 stacked on the arcuate flange segment 211, the arcuate flange segments 211 of each flange unit 21 together form a flange body 20a, and the connecting segments 212 of each flange unit 21 together form a connecting ring 20b.

[0068] like Figures 9 to 12 As shown, optionally, the connecting section 212 of each flange unit 21 is connected to the tower segment 10a, and each arc-shaped flange section 211 is spaced apart from each other in the circumferential direction X. A first connector 22 is provided between two adjacent arc-shaped flange sections 211 and they are connected to each other through the first connector 22. A receiving groove 30c is provided on the vertical flange group 30, and the connecting ring 20a is received in the receiving groove 30c. Optionally, the connecting section 212 of the connecting ring 20a can be at least partially received in the receiving groove 30c and connected to the vertical flange group 30. In the tower section 100 provided in the embodiment of the present invention, the setting of the receiving groove 30c can avoid the connecting ring 20a or the connecting section 212 to avoid interference, and is easy to operate, and can ensure the connection requirements between the vertical flange group 30 and the end flange 20.

[0069] Optionally, two adjacent arc-shaped flange segments 211 may be connected to each other by welding, and the first connector 22 may be solidified solder.

[0070] Optionally, the connecting section 212 and the vertical flange group 30 can also be connected to each other by welding. A gap is formed between the connecting section 212 and the groove wall that encloses the accommodating groove 30c. A connecting structure can be arranged in the gap, and the connecting structure can be solidified solder.

[0071] As an optional embodiment, the vertical flange group 30 includes a first vertical flange 31 and a second vertical flange 32 which are arranged opposite to each other in the circumferential direction X and connected to each other. The first vertical flange 31 is connected to one of the two adjacent segment assemblies, and the second vertical flange 32 is connected to the other of the two adjacent segment assemblies. The first vertical flange 31 and the second vertical flange 32 are both provided with a receiving groove 30c. The first vertical flange 31 and the second vertical flange 32 can be connected to each other with the corresponding tower segment 10a by welding, and the first vertical flange 31 and the second vertical flange 32 can be detachably connected to each other by fasteners such as bolts. By providing the receiving grooves 30c on the first vertical flange 31 and the second vertical flange 32, respectively, the first vertical flange 31 and the second vertical flange 32 can be facilitated to avoid the connecting section 212 of the flange unit 21 and facilitate the connection between each of them and the flange unit 21.

[0072] As an optional embodiment, the first vertical flange 31 and the second vertical flange 32 can be arranged to protrude from the barrel body 10 in the radial direction Z toward the inside of the barrel body 10, and the flange holes of the first vertical flange 31 and the second vertical flange 32 can be arranged inside the barrel body 10, which is convenient for connection and later repair and maintenance. Of course, this is an optional embodiment. In some embodiments, the first vertical flange 31 and the second vertical flange 32 can also be arranged to protrude from the barrel body 10 in the radial direction Z toward the outside of the barrel body 10, and the respective flange holes can be arranged on the outside of the barrel body 10, or the first vertical flange 31 and the second vertical flange 32 can be arranged to protrude from the barrel body 10 on both the inside and outside of the barrel body 10, and flange holes can be arranged on the inside and outside respectively, so that the first vertical flange 31 and the second vertical flange 32 are connected on both the inside and outside of the barrel body 10 by bolts and other fasteners, as long as the splicing requirements between the segmented components can be met.

[0073] In some optional embodiments, the tower section 100 provided in the embodiment of the present invention has a vertical flange group 30 having a mounting section 30a and a transition section 30b, wherein the transition section 30b is provided with a mounting section 30a at at least one end in the axial direction Y, and the thickness of the mounting section 30a in the radial direction Z is greater than the thickness of the transition section 30b in the radial direction Z. The above arrangement is more conducive to the force of the vertical flange group 30. Optionally, the transition section 30b can be provided with mounting sections 30a at both ends in the axial direction Y. Since the mounting section 30a has a large thickness, the connection requirement between it and the end flange 20 can be guaranteed, and the influence of the strength loss caused by the provision of the receiving groove 30c on the overall rigidity of the tower section can be reduced.

[0074] Optionally, the first vertical flange 31 and the second vertical flange 32 may both have a mounting section 30 a and a transition section 30 b , so that the two can be aligned and connected with each other in the circumferential direction X when connected, and the bearing capacity requirement of the vertical flange group 30 can be optimized.

[0075] Continue reading Fig.12 As shown, in some optional embodiments, the first vertical flange 31 can be aligned with the end surface of the connected connecting section 212 in the circumferential direction X, and the second vertical flange 32 is aligned with the end surface of the connected connecting section 212 in the circumferential direction X.

[0076] like Fig.13 As shown, in some other embodiments, the first vertical flange 31 may protrude from the connected connection section 212 in the circumferential direction X, the second vertical flange 32 may protrude from the connected connection section 212 in the circumferential direction X, and the first vertical flange 31 and the second vertical flange 32 may butt against each other in the circumferential direction X. Through the above arrangement, after the segmented assemblies are sequentially spliced ​​to form the tower section 100, the sealing performance of two adjacent segmented assemblies is better on the basis of ensuring the connection requirements.

[0077] like Fig.14 As shown, in some optional embodiments, a first notch is provided at the joint of the first vertical flange 31 and the second vertical flange 32, a second connector 33 is provided in the first notch, and the vertical flange group 30 and the end flange 20 are connected to each other through the second connector 33. Through the above arrangement, the connection strength and sealing requirements of two adjacent segment assemblies when spliced ​​through the vertical flange group 30 can also be guaranteed.

[0078] For example, the first vertical flange 31 may protrude from the connected connection section 212 in the circumferential direction X, and the second vertical flange 32 may protrude from the connected connection section 212 in the circumferential direction X. The first notch provided at the joint of the first vertical flange 31 and the second vertical flange 32 may be formed by starting from the ends of the first vertical flange 31 and the second vertical flange 32 facing the end flange 20 in the axial direction Y and extending along the axial direction Y, so that the second connecting body 33 may be opposite to the first connecting body 22 and form a whole. When adjacent arc-shaped flange sections 211 are connected to each other by soldering or the like, the first vertical flange 31 and the second vertical flange 32 may be connected at the same time, so that the solder flows to the first notch, and the splicing forming efficiency of the tower section 100 is improved on the basis of meeting the splicing requirements.

[0079] like Fig.15 as well as Fig.16 As shown, optionally, since the barrel body 10 includes the linear portion 11 and the protruding portion 12 arranged alternately, in order to ensure the connection strength between the connecting ring 20b and the barrel body 10, optionally, a second notch can be provided at the joint of the connecting ring 20b and the barrel body 10, and optionally, a second notch can be provided at the joint of the connecting section 212 of the connecting ring 20b and the barrel body 10, and a third connector 40 is provided in the second notch, and the connecting section 212 and the tower segment 10a are connected through the third connector 40. The second notch can be connected and transitioned by welding and grinding, and the welds on both sides can be melted through or not melted through as needed. The third connector 40 can include solidified solder. Through the above arrangement, the connection strength between the end flange 20 and the barrel body 10 can be ensured, and the safety performance of the tower segment 100 can be ensured.

[0080] Optionally, a second notch is provided at the joint between the inner side of the barrel body 10 in the radial direction Z and the connecting segment 212 of the connecting ring 20b and at the joint between the outer side of the barrel body 10 in the radial direction Z and the connecting segment 212, respectively, to further ensure the connection strength between the two.

[0081] Exemplarily, when the barrel body 10 includes more than two tower segments 10a and the end flange 20 includes more than two flange units 21, second notches can be respectively set at the joints between the interconnected connecting sections 212 and the tower segments 10a, and a third connector 40 can be set in the second notches, so that each connecting section 212 is connected to the tower segments 10a through the third connector 40.

[0082] The tower section 100 provided in the embodiment of the present invention has a wall portion of the barrel body 10 in a concave-convex distribution structure, which effectively increases the bending stiffness of the tower section 100, so that the stiffness of the tower frame 1 formed by the tower section 100 is higher. Compared with the prior art, under the same load bearing capacity requirements, the material usage is smaller and the cost is low. In addition, this setting form is not limited by the molding equipment, so that the length in the axial direction Y can be made longer than the ordinary circular ring tower section 100 in the prior art, reducing the number of circumferential welds, and reducing the difficulty and cost of processing.

[0083] In the tower 1 provided in the embodiment of the present invention, some of the two or more tower sections 100 may adopt the tower sections 100 provided in the above embodiments. Of course, all of the tower sections 100 may also adopt the tower sections 100 provided in the above embodiments.

[0084] Furthermore, the tower sections 100 included in the tower 1 may be in the form of a whole ring or in the form of slices in the circumferential direction X. For example, the tower section 100 with a larger radial dimension at the lower part may be in the form of slices, while the tower section 100 with a smaller radial dimension at the upper part may be in the form of a whole ring. Since the tower 1 includes the tower sections 100 provided by the above-mentioned embodiments, compared with the prior art, under the same load bearing capacity requirements, the material usage is smaller and the cost is low. The wind turbine generator set used therein has the advantages of low cost and good power generation efficiency.

[0085] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. 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 section (100), characterized in that: include: A barrel body (10), the barrel body (10) being annular as a whole and comprising linear portions (11) and convex portions (12) arranged alternately in its circumferential direction (X), the linear portions (11) and convex portions (12) arranged adjacent to each other being connected to each other, and the convex portions (12) being arranged to at least partially protrude from the linear portions (11) in the radial direction (Z) of the barrel body (10); End flanges (20), the two ends of the barrel body (10) in its own axial direction (Y) are respectively connected to the end flanges (20); The cylinder body (10) has more than two tower segments (10a) in the circumferential direction (X), each of the tower segments (10a) includes the straight portions (11) and the protruding portions (12) arranged alternately, the end flange (20) has more than two flange units (21) in the circumferential direction (X), each of the tower segments (10a) is respectively connected to the flange units (21) at both ends in the axial direction (Y) and together form a segment assembly, the tower section (100) also includes a vertical flange group (30), and in the circumferential direction (X), two adjacent segment assemblies are connected via the vertical flange group (30); The flange unit (21) comprises an arcuate flange segment (211) and a connecting segment (212) stacked on the arcuate flange segment (211); the connecting segment (212) is connected to the tower segment (10a); the arcuate flange segments (211) are spaced apart from each other in the circumferential direction (X); a first connecting body (22) is provided between two adjacent arcuate flange segments (211) and the two adjacent arcuate flange segments (211) are connected to each other via the first connecting body (22); a receiving groove (30c) is provided on the vertical flange group (30); the connecting segment (212) is at least partially received in the receiving groove (30c) and is connected to the vertical flange group (30).

2. The tower section (100) according to claim 1, characterized in that: The straight portions (11) of the barrel body (10) have the same structure and are spaced apart in the circumferential direction (X); and / or the protruding portions (12) of the barrel body (10) have the same structure and are spaced apart in the circumferential direction (X).

3. The tower section (100) according to claim 1, characterized in that: The orthographic projection of the protrusion (12) in the axial direction (Y) extends along a curved trajectory, and the curved trajectory includes an arc segment.

4. The tower section (100) according to claim 1, characterized in that: The orthographic projection of the protruding portion (12) in the axial direction (Y) extends along a broken line trajectory, and the broken line trajectory includes a first line segment (121) and a second line segment (122) arranged to intersect each other, one end of the first line segment (121) away from the second line segment (122) is connected to the orthographic projection of one of the straight line portions (11) arranged adjacent to the protruding portion (12), and one end of the second line segment (122) away from the first line segment (121) is connected to the orthographic projection of another straight line portion (11) arranged adjacent to the protruding portion (12).

5. The tower section (100) according to claim 1, characterized in that: The vertical flange group (30) comprises a mounting section (30a) and a transition section (30b), wherein the mounting section (30a) is arranged at least at one end of the transition section (30b) in the axial direction (Y), and the thickness of the mounting section (30a) in the radial direction (Z) is greater than the thickness of the transition section (30b) in the radial direction (Z).

6. The tower section (100) according to claim 1, characterized in that: The vertical flange group (30) comprises a first vertical flange (31) and a second vertical flange (32) which are arranged opposite to each other in the circumferential direction (X) and connected to each other, the first vertical flange (31) being connected to one of the two adjacent slice assemblies, the second vertical flange (32) being connected to the other of the two adjacent slice assemblies, and the first vertical flange (31) and the second vertical flange (32) being both provided with the accommodating groove (30c).

7. The tower section (100) according to claim 6, characterized in that: The first vertical flange (31) protrudes from the connected slice assembly in the circumferential direction (X), and the second vertical flange (32) protrudes from the connected slice assembly in the circumferential direction (X). The first vertical flange (31) and the second vertical flange (32) are butted against each other in the circumferential direction (X).

8. The tower section (100) according to claim 7, characterized in that: A first notch is provided at the joint between the first vertical flange (31) and the second vertical flange (32), a second connecting body (33) is provided in the first notch, and the vertical flange group (30) and the end flange (20) are connected to each other via the second connecting body (33).

9. The tower section (100) according to claim 1, characterized in that: A second notch is provided at the joint between the connecting section (212) and the tower segment (10a), a third connector (40) is provided in the second notch, and the connecting section (212) and the tower segment (10a) are connected via the third connector (40).

10. A tower (1), characterized in that: It comprises the tower section (100) according to any one of claims 1 to 9.

11. A wind turbine generator set, characterized in that: Comprising a tower (1) as claimed in claim 10.

Images