Wind power generation fan tower structure

Abstract

The invention is suitable for the field of wind power generation, and provides a wind power generation fan tower structure which comprises a conversion section, a tower drum, a plane supporting assembly, an outer supporting assembly and an inner supporting assembly. The tower drum is sleeved with the conversion section, one end of the conversion section is fixedly connected with the tower drum through the mounting hole, and the other end of the conversion section is fixedly connected with the outer supporting assembly; the inner supporting assembly is located in the outer supporting assembly, one end of the inner supporting assembly is fixedly connected with the lower end of the tower barrel, and the other end of the inner supporting assembly penetrates through the plane supporting assembly. The plane supporting assembly is fixedly connected to the interior of the outer supporting assembly. According to the structure, the load of the tower drum can be decomposed in time, and the reliability of the overall structure is improved.

Description

Technical Field

[0001] The present invention relates to the field of wind power generation, and in particular to a wind power generation fan tower structure. Background Art

[0002] With technological advancements in the wind power industry, individual wind turbines are becoming larger and taller to improve power generation efficiency, driving increasing turbine hub heights and increasing turbine loads. When the hub height is under 120 meters, pure steel tower structures offer superior economics. As the hub height exceeds 120 meters, top steel tower sections and concrete tower structures gain an advantage due to their sufficient stability. However, due to the discrete nature of concrete's material properties, component quality cannot be precisely controlled. Concrete segments are heavy and large, and due to the size limitations of highway bridges and culverts, land transportation and hoisting costs are high, making precise control of construction quality difficult. This has led to numerous quality incidents in recent years.

[0003] The truss structure in the existing technology has many rods and nodes, resulting in a large number of tower fasteners, high requirements for on-site assembly, and a large amount of resources needed for subsequent operation and maintenance. The truss segment structure has a complex force transmission design and high difficulty. The truss rods not only bear axial forces, but also large bending moments, and cannot effectively exert the bearing capacity of the material. The transition section between the truss section and the upper steel tower section has complex processing technology, and the welding quality is difficult to guarantee, which will become a fatigue weak link. Summary of the Invention

[0004] The purpose of the present invention is to provide a wind turbine tower structure to solve the technical problems existing in the prior art, which mainly includes the following contents: The present application provides a wind turbine tower structure, comprising: a conversion section, a tower, a planar support assembly, an outer support assembly, and an inner support assembly; The conversion section is sleeved on the tower, and one end of the conversion section is fixedly connected to the tower through a mounting hole, and the other end is fixedly connected to the outer support assembly; The inner support assembly is located inside the outer support assembly, and one end of the inner support assembly is fixedly connected to the lower end of the tower, and the other end passes through the planar support assembly; The planar support assembly is fixedly connected to the interior of the outer support assembly.

[0005] To further implement the present application, the following configuration is particularly adopted: the conversion section includes: A carrier plate assembly, wherein the carrier plate assembly includes a mounting hole in the middle thereof, and the carrier plate assembly can be fixedly mounted on the tower through the mounting hole; A conversion truss assembly, one end of which is fixedly connected to the lower end of the carrier plate assembly, and the conversion truss assemblies are spaced apart along the circumference of the carrier plate assembly, and the axis of the conversion truss assembly does not intersect with the axis of the tower; A conversion support assembly, wherein the inner side of the conversion support assembly is fixedly sleeved on the tower, and the outer side of the conversion support assembly is fixedly connected to the other end of the conversion truss assembly; In which, the conversion truss assembly includes a first truss tube and a second truss tube, one end of the first truss tube and one end of the second truss tube intersect at the lower end of the supporting plate assembly, and the other end of the first truss tube and the other end of the second truss tube are respectively connected to the adjacent second truss tube or the first truss tube.

[0006] In order to further better implement the present application, the following setting structure is particularly adopted: the supporting plate assembly includes a first supporting plate and a second supporting plate, the first supporting plate is fixedly connected to the accommodating cavity of the second supporting plate, the first supporting plate and the second supporting plate are coaxially arranged, and the first supporting plate is connected to the tower through the mounting hole.

[0007] In order to further better implement the present application, the following setting structure is particularly adopted: the first supporting plate includes multiple first supporting units, the multiple first supporting units are distributed at intervals along the circumference of the tower, and two adjacent first supporting units are fixedly connected.

[0008] In order to further better implement the present application, the following setting structure is particularly adopted: the second carrying plate includes multiple second carrying units, two adjacent second carrying units are fixedly connected, and the second carrying units are arranged in a one-to-one correspondence with the first carrying units.

[0009] In order to further better realize the present application, the following setting structure is particularly adopted: the conversion support assembly includes a first outer support member and a first inner support member, the first outer support member is fixedly connected to the conversion truss assembly, one end of the first inner support member is fixedly connected to the first outer support member, and the other end is connected to the tower, and the first inner support member is a cross structure.

[0010] In order to further better implement the present application, the following setting structure is particularly adopted: the planar support assembly includes at least a first planar support structure and a second planar support structure, and the first planar support structure and the second planar support structure are distributed at intervals along the axial direction of the outer support assembly.

[0011] In order to further better implement the present application, the following setting structure is particularly adopted: the first planar support structure includes a first outer planar member and a first inner planar member, the first outer planar member is fixedly connected to the outer support assembly, the first inner planar member is fixedly connected to the first outer planar member, and the first inner planar member is in a tic-tac-toe structure.

[0012] To further better implement the present application, the following configuration is particularly adopted: the second planar support structure includes a second outer planar member, a third outer planar member, and a second inner planar member; The third outer planar member is located inside the second outer planar member and is fixedly connected to the outer support assembly. The second outer planar member and the third outer planar member are located in the same plane. One end of the second inner planar member is fixedly connected to the third outer planar member, and the other end is fixedly connected to the inner support assembly, and the second inner planar member is a cross structure.

[0013] In order to further better implement the present application, the following setting structure is particularly adopted: the external support assembly includes multiple external support tubes, two adjacent external support tubes define a V-shaped space, multiple tie rods are arranged in the V-shaped space, and the multiple tie rods are located between the first planar support structure and the second planar support structure, and the multiple tie rods are cross-arranged.

[0014] Compared with the prior art, the present invention has at least the following technical effects: (1) The present application adopts a wind turbine tower structure, comprising a conversion section, a tower, a planar support assembly, an outer support assembly, and an inner support assembly. The conversion section is sleeved on the tower, the outer support assembly is connected to the lower end of the conversion section, the planar support assembly is connected to the inner wall of the outer support assembly, and the inner support assembly is located inside the outer support assembly and is connected to the tower through the planar support assembly. In the wind turbine tower structure of the present application, the tower is subjected to horizontal force, vertical force, horizontal torque, and vertical bending moment. The conversion section can timely decompose the horizontal force, horizontal torque, and vertical bending moment of the load in the tower and then transmit them to the outer support assembly. At the same time, the inner support assembly can bear the vertical force transmitted from the tower, thereby realizing step-by-step sharing of the tower load and improving the reliability of the overall structure.

[0015] (2) The conversion section of the wind turbine tower in this application includes a bearing plate assembly and a conversion truss assembly. The bearing plate assembly is mounted on the tower, and the conversion truss assembly is connected to the lower end of the tower bearing plate assembly. The conversion section in this application surrounds the tower, and the axis of the conversion truss assembly does not intersect with the axis of the tower. The bearing plate assembly can promptly decompose the horizontal force and vertical force of the load in the tower and transmit them to the conversion truss assembly in different directions. The conversion truss assembly then converts the transmitted horizontal torque and bending moment into the axial force of the conversion truss assembly. In this way, the load on the tower is largely decomposed and converted into the axial force of the truss assembly, and the bending moment of the conversion truss assembly is greatly reduced, giving full play to the bearing capacity of the assembly.

[0016] (3) Compared with pure steel tube and pure precast concrete tube structures of the same height, the tower structure of this application has stable and reliable material properties, is easy to process, convenient to transport, has a low total weight, small component size, simple hoisting, convenient installation, greatly reduced foundation excavation volume and reinforced concrete consumption, high overall structural reliability, controllable quality, controllable cost, the higher the height, the more obvious the cost advantage, and reduced long-term maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the wind turbine tower structure in this application; Figure 2 yes Figure 1 Enlarged view of part A in the middle; Figure 3 It is a structural diagram of the conversion section in the present invention; Figure 4 yes Figure 1 Enlarged view of part B in the middle.

[0019] In the picture: 10. Conversion section; 11. Carrier plate assembly; 111. Mounting hole; 112. First carrier plate; 1121. First carrier unit; 113. Second carrier plate; 1131. Accommodation cavity; 1132. Second carrier unit; 12. Conversion truss assembly; 121. First truss tube; 122. Second truss tube; 13. Conversion support assembly; 131. First outer support member; 132. First inner support member; 20. Tower; 30. Planar support assembly; 31. First planar support structure; 311. First outer planar member; 312. First inner planar member; 32. Second planar support structure; 321. Second outer planar member; 322. Third outer planar member; 323. Second inner planar member; 40. External support assembly; 41. External support tube; 42. Tie rod; 50. Internal support assembly. DETAILED DESCRIPTION

[0020] The following description provides many different embodiments or examples for implementing different features of the present application. The components and arrangements described in the following specific examples are only used to simplify the present application and are only examples, not to limit the present application.

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents selected embodiments of the present application.

[0022] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connectivity between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood based on the specific circumstances. In addition, the terms "first," "second," "third," and the like are used only to distinguish descriptions and are not to be understood as indicating or implying relative importance.

[0023] In this application, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] The truss structure in the existing technology has many rods and nodes, resulting in a large number of tower fasteners, high requirements for on-site assembly, and a large amount of resources needed for subsequent operation and maintenance. The truss segment structure has a complex force transmission design and high difficulty. The truss rods not only bear axial forces, but also large bending moments, and cannot effectively exert the bearing capacity of the material. The transition section between the truss section and the upper steel tower section has complex processing technology, and the welding quality is difficult to guarantee, which will become a fatigue weak link.

[0025] In the existing technology, the transition section is usually a steel pipe directly connected to the tower, or the steel pipe is connected to a sleeve. The axis of the steel pipe intersects with the axis of the tower. The load of the wind turbine borne by the tower is only transferred to the steel pipe intersecting with it, but it cannot share the horizontal force, so the axial force and bending moment transmitted to the supporting steel pipe are both large.

[0026] In view of this, the present application provides a wind turbine tower structure, such as Figure 1-Figure 4 As shown, the wind turbine tower comprises the aforementioned transition section 10, tower 20, planar support assembly 30, outer support assembly 40, and inner support assembly 50. In some optional embodiments, the tower 20 is a steel pipe structure, comprising an upper tower, a middle tower, and a lower tower, which are fixedly connected by flanges, and the upper tower is connected to the wind turbine hub via a steel flange.

[0027] The transition section 10 is mounted on the tower 20, with one end of the transition section 10 fixedly connected to the tower 20 via the mounting hole 111, and the other end fixedly connected to the outer support assembly 40. For example, the transition section 10 is mounted on the middle tower, and the lower tower is located within the space enclosed by the transition section 10. The loads acting on the upper and middle towers by the wind turbine are transmitted and decomposed by the transition section 10, greatly reducing the bending moment load borne by the lower tower. As a result, the diameter of the lower tower gradually decreases as it moves away from the middle tower, forming a tapered shape, which greatly reduces the use of steel and the size of the tower.

[0028] The inner support assembly 50 is a lattice structure composed of steel pipes and is located within the interior of the outer support assembly 40. One end of the inner support assembly 50 is fixedly connected to the lower end of the tower 20, and the other end passes through the planar support assembly 30. For example, the upper end of the inner support assembly 50 can be fixedly connected to the lower end of the lower tower via a flange, and the other end of the inner support assembly 50 is fixedly supported on the ground through the planar support assembly 30. The lower tower bears the vertical force load transmitted from the top tower, transfers this vertical force load to the inner support assembly 50, and then transmits part of the horizontal force converted from the bending moment through the planar support assembly 30 to the outer support assembly 40.

[0029] In some optional embodiments, the internal support assembly 50 may be composed of a plurality of steel pipes and connecting rods composed of angle steels, channel steels, or steel plates. The long steel pipe is placed vertically, and the upper part is connected to the lower tower in the transition section 10 by welding or bolting, and the lower part is connected to the foundation by a flange. The long steel pipe is composed of shorter steel pipes connected by flanges. Concrete can be poured inside the long steel pipe. The concrete can be poured after these short steel pipes are transported to the site and cured to meet the strength requirements before being hoisted and connected by flanges to form long steel pipes. Alternatively, the concrete can be hoisted and connected by flanges to form long steel pipes, and the entire cone and transition section connection and installation are completed before being poured and cured to meet the strength requirements. The long steel pipes are connected to each other by connecting rods composed of angle steels, channel steels, or steel plates in a bolted manner. The long steel pipe is responsible for bearing the vertical load of the wind turbine transmitted from the internal steel tower of the steel transition section, and can serve as a support structure for the wind turbine's internal vertical transportation mechanism, elevator, or anti-climbing device. Connecting rods made of angle steel, channel steel or steel plates improve the overall stability of the internal truss support leg structure by connecting long steel tubes.

[0030] The planar support assembly 30 is fixedly connected to the interior of the outer support assembly 40 to support the outer support assembly 40. For example, the planar support assembly 30 is a planar lattice structure made of steel pipes, which can bear horizontal loads and resist the bending moment load of the wind turbine.

[0031] Therefore, the present application adopts a wind turbine tower structure, which includes a transition section 10, a tower 20, a planar support assembly 30, an outer support assembly 40, and an inner support assembly 50. The transition section 10 is sleeved on the tower 20, the outer support assembly 40 is connected to the lower end of the transition section 10, the planar support assembly 30 is connected to the inner wall of the outer support assembly 40, and the inner support assembly 50 is located inside the outer support assembly 40 and passes through the planar support assembly 30 to be connected to the tower 20. In the wind turbine tower structure of the present application, the tower 20 is subjected to horizontal force, vertical force, horizontal torque, and vertical bending moment. The transition section 10 can timely decompose the horizontal force, horizontal torque, and vertical bending moment of the load in the tower 20 and then transmit them to the outer support assembly 40. At the same time, the inner support assembly 50 can bear the vertical force transmitted from the tower 20, thereby achieving step-by-step sharing of the load of the tower 20. The planar support assembly 30 and the tie rod 42 jointly improve the stability of the overall structure.

[0032] According to some optional embodiments, the conversion section 10 is fixedly mounted on the tower 20 of the wind turbine tower to bear the force of the tower 20, and mainly includes: The bearing plate assembly 11 includes a mounting hole 111 in the middle of the bearing plate assembly 11, and the bearing plate assembly 11 can be fixedly mounted on the tower 20 through the mounting hole 111. For example, the bearing plate assembly 11 can be a thick steel plate disc, and the middle part of the bearing plate assembly 11 is provided with a mounting hole 111. The diameter of the mounting hole 111 is adapted to the diameter of the tower 20 at the corresponding position, so that after the bearing plate assembly 11 is sleeved on the outer wall of the tower 20 through the mounting hole 111, the bearing plate assembly 11 can be fixed to the tower 20 by welding. The bearing plate assembly 11 provided in the present application can efficiently decompose the horizontal force, vertical bending moment and horizontal torque of the load in the tower 20 in different directions and transmit them in a timely manner.

[0033] In some optional embodiments, the diameter and / or thickness of the carrier plate assembly 11 can be adjusted according to the load borne by the tower 20. For example, the current target load on the tower 20 is obtained, and the required diameter and / or thickness of the carrier plate assembly 11 is calculated based on the load. This allows the load on the tower 20 to be distributed more quickly and accurately.

[0034] The conversion truss assembly 12 has one end fixedly connected to the lower end of the bearing plate assembly 11. The end of the conversion truss assembly 12 can be connected to the lower end surface of the bearing plate assembly 11 near the edge by welding or bolts, so that the load on the tower 20 can be decomposed to the greatest extent. There are multiple conversion truss assemblies 12, and the ends of the multiple conversion truss assemblies 12 are distributed at intervals along the circumference of the bearing plate assembly 11 to support the bearing plate assembly 11 and decompose the load on the bearing plate assembly 11. In the present application, since the end of the conversion truss assembly 12 is installed at the edge below the bearing plate assembly 11, the conversion truss assembly 12 is tilted at a smaller angle relative to the bearing plate assembly 11, and the axis of the conversion truss assembly 12 and the axis of the tower 20 are located in different positions in space. Therefore, the axis of the conversion truss assembly 12 does not intersect with the axis of the tower 20. With this arrangement, the load on tower 20 is first decomposed by the bearing plate assembly 11, and then a portion of the load is transferred to the transfer truss assembly 12. This prevents the tower 20 load from acting directly on the transfer truss assembly 12, which could cause buckling, bending, or damage to the transfer truss assembly 12. The transfer truss assembly 12 converts the horizontal force, horizontal torque, and vertical bending moment transmitted by the bearing plate assembly 11 into an axial force within the transfer truss assembly 12, which is then transferred to the lower nodes of the transfer truss assembly 12.

[0035] The conversion support assembly 13, the inner side of the conversion support assembly 13 is fixedly mounted on the tower 20, and the outer side of the conversion support assembly 13 is fixedly connected to the other end of the conversion truss assembly 12. Exemplarily, the conversion support assembly 13 is a lattice structure, and the inner side of the conversion support assembly 13 close to the tower 20 can be fixedly connected to the outer wall of the tower 20 by welding or flange. The conversion support assembly 13 is located at the lower end of the conversion truss assembly 12, and the outer side of the conversion support assembly 13 is fixedly connected to the lower end of the conversion truss assembly 12. The bearing plate assembly 11, the conversion truss assembly 12 and the conversion support assembly 13 together form the conversion section 10, and the conversion section 10 is mounted on the outer wall of the tower 20. The conversion support assembly 13 bears the horizontal load transmitted from the conversion truss assembly 12, and together with the horizontal load borne by the top bearing plate assembly 11, resists the bending moment load of the wind turbine. At the same time, the torque and bending moment in the fan load are converted into horizontal force through the bearing plate assembly 11, and the horizontal force in the fan load is transmitted to the lower support structure through the axial force of the conversion truss assembly 12, which greatly reduces the stress on the support structure, increases the service life of the support structure, and saves costs.

[0036] The conversion truss assembly 12 includes a first truss tube 121 and a second truss tube 122. In some optional embodiments, the first truss tube 121 and the second truss tube 122 are preferably steel tubes, and prestressed steel strands are provided inside the first truss tube 121 and the second truss tube 122 to improve the fatigue performance of the overall conversion section 10 structure. One end of the first truss tube 121 and one end of the second truss tube 122 intersect at the lower end of the carrier plate assembly 11 near the edge, and the first truss tube 121 and the second truss tube 122 are connected to form a V-shaped conversion truss assembly 12. The other end of the first truss tube 121 and the other end of the second truss tube 122 are respectively connected to the adjacent second truss tube 122 or the first truss tube 121. Illustratively, the first truss tube 121 and the second truss tube 122 are connected end to end, such that the upper end of the first truss tube 121 and the upper end of the second truss tube 122 intersect at the lower end surface of the supporting plate assembly 11, the lower end of the first truss tube 121 is connected to the lower end of the second truss tube 122 in the adjacent conversion truss assembly 12 to form a V-shaped structure, and the lower end of the second truss tube 122 is connected to the lower end of the first truss tube 121 in the adjacent conversion truss assembly 12 to form a V-shaped structure.

[0037] Therefore, the present application adopts a conversion section 10 of a wind turbine tower, which includes a bearing plate assembly 11 and a conversion truss assembly 12. The bearing plate assembly 11 is sleeved on the tower 20, and the conversion truss assembly 12 is connected to the lower end of the bearing plate assembly 11 of the tower 20. The conversion section 10 in the present application surrounds the tower 20, and the axis of the conversion truss assembly 12 does not intersect with the axis of the tower 20. Among them, the bearing plate assembly 11 can timely decompose the horizontal force, horizontal torque and vertical bending moment of the load in the tower 20, convert them into axial force of the conversion truss assembly 12, and transmit them to the conversion truss assembly 12 in different directions. In this way, the load on the tower 20 is greatly decomposed, and the bending moment of the conversion truss assembly 12 is reduced, so that the load-bearing capacity of the external support assembly 40 is fully utilized.

[0038] For example, the tower 20 is subjected to horizontal force, vertical force, horizontal torque and vertical bending moment, and the specific decomposition process is as follows: The vertical force of the tower 20 can be transmitted to the inner support assembly 50 and decomposed; the horizontal force of the tower 20 is transmitted to the load-bearing plate assembly 11, and the horizontal force of the load-bearing plate assembly 11 is converted into the axial force of the conversion truss assembly 12, and finally transmitted to the outer support assembly 40 and decomposed; a large part of the vertical bending moment of the tower 20 is converted into the horizontal force of the load-bearing plate assembly 11 and the conversion support assembly 13, which largely bears the vertical bending moment transmitted by the tower 20, and is finally transmitted to the lower outer support assembly 40; the horizontal torque of the tower 20 is transmitted to the load-bearing plate assembly 11, the conversion truss assembly 12, the conversion support assembly 13 and the outer support assembly 40 in sequence.

[0039] According to some optional embodiments, the supporting plate assembly 11 includes a first supporting plate 112 and a second supporting plate 113, the first supporting plate 112 is fixedly connected to the accommodating cavity 1131 of the second supporting plate 113, the first supporting plate 112 and the second supporting plate 113 are coaxially arranged, and the first supporting plate 112 is connected to the tower 20 through the mounting hole 111.

[0040] In the above solution, both the first carrier plate 112 and the second carrier plate 113 are annular. The diameter of the first carrier plate 112 is smaller than that of the second carrier plate 113. The outer wall of the first carrier plate 112 is fixedly connected to the inner wall of the accommodating cavity 1131 of the second carrier plate 113. The two can be fixedly connected by welding or bolts. In this way, by fixing the first and second carrier plates 112 and 113 to the outer wall of the tower 20, the load on the tower 20 can be better decomposed and transferred in stages.

[0041] According to some optional embodiments, the first carrying plate 112 includes a plurality of first carrying units 1121 , the plurality of first carrying units 1121 are spaced apart along the circumference of the tower 20 , and two adjacent first carrying units 1121 are fixedly connected.

[0042] In the above solution, the first bearing unit 1121 can be a steel sheet or a steel block, and two adjacent first bearing units 1121 can be connected by bolts. Dividing the first bearing plate 112 into multiple first bearing units 1121 can facilitate transportation of the first bearing units 1121.

[0043] In some optional embodiments, the plurality of first carrying units 1121 may be closely arranged or spaced apart in a grid-like manner, which is not limited here.

[0044] In some optional embodiments, the steel sheet of the first bearing unit 1121 may be wavy, so as to better decompose and transfer the load of the tower 20 in different directions.

[0045] According to some optional embodiments, the second carrying plate 113 includes a plurality of second carrying units 1132 , two adjacent second carrying units 1132 are fixedly connected, and the second carrying units 1132 are arranged in a one-to-one correspondence with the first carrying units 1121 .

[0046] In the above solution, the second bearing plate 113 can be a steel pipe or an I-beam ring beam. The second bearing plate 113 is also divided into multiple second bearing units 1132. Adjacent second bearing units 1132 are fixedly connected by bolts. The second bearing units 1132 correspond to the first bearing units 1121 one by one and are fixedly connected. This ensures a tight connection between the first bearing units 1121 and allows for the rapid decomposition and transfer of the tower 20 load.

[0047] According to some optional embodiments, the conversion support assembly 13 includes a first outer support member 131 and a first inner support member 132, the first outer support member 131 is fixedly connected to the conversion truss assembly 12, one end of the first inner support member 132 is fixedly connected to the first outer support member 131, and the other end is connected to the tower 20, and the first inner support member 132 is in a cross structure.

[0048] In the above scheme, the first outer support member 131 and the first inner support member 132 can be made of steel pipes. The first inner support member 132 is connected to the lower tower by welding or flange connection, and the first outer support member 131 is connected by welding or bolts to form a closed structure. The connection between the first inner support member 132 and the lower tower is formed with multiple nodes, and the connection between the first outer support member 131, the conversion truss assembly 12 and the outer support assembly 40 is formed with multiple nodes. These nodes together with the lower end of the tower 20 form a planar lattice structure, which bears the horizontal load transmitted by the conversion truss assembly 12 and, together with the horizontal load borne by the bearing plate assembly 11, resists the bending moment load of the wind turbine. At the same time, the torque and bending moment in the wind turbine load are converted into horizontal forces by the bearing plate assembly 11, and the horizontal forces in the wind turbine load are transmitted to the outer support assembly 40 through these nodes after being transmitted by the axial force of the conversion truss assembly 12.

[0049] In some optional embodiments, the first outer support member 131 is a quadrilateral, and the first inner support member 132 is a cross structure. For example, the first inner support member 132 is composed of four steel pipes, one end of each steel pipe is connected to the vertex of the first outer support member 131, and the other end is connected to the outer wall of the lower tower. Every two steel pipes are located on the diagonal line of the first outer support member 131, thereby forming an approximate cross structure.

[0050] According to some optional embodiments, the planar support assembly 30 includes at least a first planar support structure 31 and a second planar support structure 32. It can be understood that the planar support assembly 30 can be arranged according to the height or stress conditions of the outer support assembly 40. A third planar support structure, a fourth planar support structure, a fifth planar support structure, and the like can also be arranged axially within the outer support assembly 40, without limitation. The first planar support structure 31 and the second planar support structure 32 are spaced apart along the axial direction of the outer support assembly 40. The first planar support structure 31 and the second planar support structure 32 are arranged in different structures according to the stress conditions at their respective locations. The planar support assembly 30 is used to improve the stability of the overall structure.

[0051] According to some optional embodiments, the first planar support structure 31 includes a first outer planar member 311 and a first inner planar member 312. The first outer planar member 311 is fixedly connected to the outer support assembly 40, and the first inner planar member 312 is fixedly connected to the first outer planar member 311. The first inner planar member 312 is arranged in a crisscross pattern. This first planar support structure 31 not only serves as a horizontal support structure for the entire outer support assembly 40, enhancing its overall stability, but also serves as a routine maintenance walkway. Therefore, it is installed slightly below the connection flange of the outer support assembly 40 to facilitate maintenance personnel to inspect all support leg connection flanges at this height. This planar structure is bolted to the outer support assembly 40 at the same height. Furthermore, because the outer support assembly 40 has a larger outer circumference than the first planar support structure 31, to enhance the in-plane rigidity of the entire planar structure and maintain the stability of the first outer planar member 311, the first inner planar member 312 is arranged diagonally in a crisscross pattern as support.

[0052] In the above embodiment, the first planar support structure 31 is also composed of multiple steel pipes. Because the first planar support structure 31 and the second planar support structure 32 are located at different axial positions of the outer support assembly 40, the structure of the first outer planar member 311 and the first inner planar member 312 is different from the structure of the second outer planar member 321, the third outer planar member 322, and the second inner planar member 323 of the second planar support structure 32.

[0053] In some optional embodiments, the first outer planar member 311 may be octagonal. The first outer planar member 311 is connected to the outer support assembly 40 by welding or bolts, and the first inner planar member 312 is fixedly connected to the first outer planar member 311 by welding. The first inner planar member 312 is fixedly connected to the first outer planar member 311 in a cross-shaped pattern, and the inner support assembly 50 passes through the first inner planar member 312.

[0054] In some optional embodiments, the first inner planar member 312 may also be connected to the inner support assembly 50 at that position through some connecting members, such as bolts, to better share the load of the tower 20 and maintain the stability of the first planar support structure 31.

[0055] According to some optional embodiments, the second planar support structure 32 is a planar lattice structure, and the second planar support structure 32 can be made of steel pipe. The second planar support structure 32 includes a second outer planar member 321, a third outer planar member 322, and a second inner planar member 323; The third outer planar member 322 is located within the second outer planar member 321 and is fixedly connected to the outer support assembly 40. The second outer planar member 321 and the third outer planar member 322 are located on the same plane to better withstand horizontal forces. One end of the second inner planar member 323 is fixedly connected to the third outer planar member 322, and the other end is fixedly connected to the inner support assembly 50. The second inner planar member 323 is in a cross-shaped structure.

[0056] This second planar support structure 32 not only serves as the horizontal support structure of the entire outer support assembly 40, enhancing the overall stability of the entire outer support assembly 40, but also serves as a daily maintenance walkway. Therefore, the installation height is slightly lower than the bottom of the connection flange of the outer support assembly 40 to facilitate maintenance personnel to check all support leg connection flanges at this height. This planar structure is fixed to the same height of the outer support assembly 40 by bolts. At the same time, since the outer peripheral distance of the outer support assembly 40 is larger than that of the second planar support structure 32, in order to enhance the in-plane rigidity of the entire planar structure and maintain the stability of the second outer planar member 321 and the third outer planar member 322, while also avoiding the middle inner support assembly 50, it is necessary to set a cross structure and a crisscross structure diagonally on the inner side of the outer walkway of the structure to form the internal horizontal support of the planar structure.

[0057] In the above solution, the second outer planar member 321 is also octagonal, but has a different shape from the first outer planar member 311 in the first planar support structure 31 .

[0058] In some optional embodiments, the second inner planar member 323 is a cross structure, such as the second inner planar member 323 is composed of four steel pipes, one end of each steel pipe is connected to the vertex of the third outer planar member 322, and the other end is connected to the top of the inner support assembly 50, and every two steel pipes are located on the diagonal line of the third outer planar member 322, thereby forming an approximate cross structure.

[0059] In some optional embodiments, the second inner planar member 323 may be directly connected to the inner support assembly 50 or may be connected to the inner support assembly 50 through a connecting member.

[0060] According to some optional embodiments, the outer support assembly 40 includes a plurality of outer support tubes 41, two adjacent outer support tubes 41 define a V-shaped space, a plurality of tie rods 42 are arranged in the V-shaped space, and the plurality of tie rods 42 are located between the first planar support structure 31 and the second planar support structure 32, and the plurality of tie rods 42 are arranged crosswise. A plurality of tie rods 42 are used to tighten the outer support assembly 40. Exemplarily, one end of the tie rod 42 is connected to the connection between the first planar support structure 31 and the outer support tube 41, and the other end of the tie rod 42 is connected to the connection between the second planar support structure 32 and the outer support tube 41. Preferably, two tie rods 42 can be provided in a V-shaped space, and the two tie rods 42 are cross-arranged. In some optional embodiments, when a third planar support structure, a fourth planar support structure, a fifth planar support structure and other multi-layer planar support structures are further provided inside the outer support assembly 40, two cross-arranged tie rods 42 are provided between two adjacent layers of planar support structures to tighten the outer support assembly 40.

[0061] In some optional embodiments, the outer support assembly 40 is a single-layer structure, specifically including multiple outer support tubes 41, one end of each outer support tube 41 is connected to the lower end of the conversion truss assembly 12, and the other end is connected to the corresponding end of the adjacent outer support tube 41.

[0062] In other optional embodiments, the external support assembly 40 is a multi-layer structure, including multiple external support tubes 41. The multiple external support tubes 41 can be long steel tubes, and each layer has the same structure. In each layer, the tops of two long steel tubes are connected to the bottom node of the same transition section 10, and the bottoms are separated to form a V-shaped support structure. The bottom node of each V-shaped support structure is further connected to the bottom node of another V-shaped support structure on the same layer. A plurality of such V-shaped support structures enclose a multi-faceted frustum truss structure for that layer. The bottom nodes of two adjacent V-shaped support structures in the lowest layer are jointly supported on the top of the same foundation and connected to the foundation via flanges. The frustum truss structures of each layer are stacked one above the other, sharing the load transferred from the upper steel transition section 10 and transferring it to the foundation. These long steel tubes can be made of shorter steel tubes connected by flanges. Prestressed steel strands can be arranged inside these long steel tubes, with the upper ends fixed to the bottom nodes of the upper steel transition section 10 and the lower ends connected to the foundation structure. These long steel pipes can be filled with concrete to increase overall rigidity and share some of the load, thereby improving overall structural stability and fatigue resistance. Concrete can be poured into these short steel pipes after they are transported to the site and cured to achieve the required strength before being hoisted and flanged together to form long steel pipes. Alternatively, these short steel pipes can be hoisted and flanged together to form long steel pipes, and after the entire cone and transition section are connected and installed, concrete can be poured and cured to achieve the required strength.

[0063] Maintenance platforms constructed from welded or bolted steel beams, steel mesh, and steel railings are installed at different heights of the single- or multi-story frustum. These platforms are also connected to the frustum's long steel tubes and to the internal support assembly 50. These platforms enhance the overall stability of the frustum and can be used for routine maintenance and overhaul.

[0064] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wind turbine tower structure, characterized in that: include: A conversion section (10), a tower (20), a planar support assembly (30), an outer support assembly (40), and an inner support assembly (50); The conversion section (10) is sleeved on the tower (20), and one end of the conversion section (10) is fixedly connected to the tower (20) through a mounting hole (111), and the other end is fixedly connected to the outer support assembly (40); The inner support assembly (50) is located inside the outer support assembly (40), and one end of the inner support assembly (50) is fixedly connected to the lower end of the tower (20), and the other end passes through the planar support assembly (30); The planar support component (30) is fixedly connected to the interior of the outer support component (40).

2. The wind turbine tower structure according to claim 1, wherein: The conversion section (10) comprises: A carrier plate assembly (11), wherein the center of the carrier plate assembly (11) includes a mounting hole (111), and the carrier plate assembly (11) can be fixedly mounted on the tower (20) through the mounting hole (111); a conversion truss assembly (12), one end of the conversion truss assembly (12) being fixedly connected to the lower end of the carrier plate assembly (11), and the conversion truss assemblies (12) being distributed at intervals along the circumference of the carrier plate assembly (11), and the axis of the conversion truss assembly (12) not intersecting with the axis of the tower (20); a conversion support assembly (13), wherein the inner side of the conversion support assembly (13) is fixedly sleeved on the tower (20), and the outer side of the conversion support assembly (13) is fixedly connected to the other end of the conversion truss assembly (12); The conversion truss assembly (12) comprises a first truss tube (121) and a second truss tube (122), one end of the first truss tube (121) and one end of the second truss tube (122) intersect at the lower end of the carrier plate assembly (11), and the other end of the first truss tube (121) and the other end of the second truss tube (122) are respectively connected to the adjacent second truss tube (122) or the first truss tube (121).

3. The wind turbine tower structure according to claim 2, wherein: The carrier plate assembly (11) comprises a first carrier plate (112) and a second carrier plate (113), wherein the first carrier plate (112) is fixedly connected to a receiving cavity (1131) of the second carrier plate (113), the first carrier plate (112) and the second carrier plate (113) are coaxially arranged, and the first carrier plate (112) is connected to the tower (20) through the mounting hole (111).

4. The wind turbine tower structure according to claim 3, wherein: The first bearing plate (112) comprises a plurality of first bearing units (1121), wherein the plurality of first bearing units (1121) are distributed at intervals along the circumference of the tower (20), and adjacent two first bearing units (1121) are fixedly connected.

5. The wind turbine tower structure according to claim 4, wherein: The second carrying plate (113) comprises a plurality of second carrying units (1132), two adjacent second carrying units (1132) are fixedly connected, and the second carrying units (1132) and the first carrying units (1121) are arranged in a one-to-one correspondence.

6. The wind turbine tower structure according to claim 2, wherein: The conversion support assembly (13) comprises a first outer support member (131) and a first inner support member (132), wherein the first outer support member (131) is fixedly connected to the conversion truss assembly (12), one end of the first inner support member (132) is fixedly connected to the first outer support member (131), and the other end is connected to the tower (20), and the first inner support member (132) is in a cross structure.

7. The wind turbine tower structure according to claim 1, wherein: The planar support assembly (30) comprises at least a first planar support structure (31) and a second planar support structure (32), wherein the first planar support structure (31) and the second planar support structure (32) are spaced apart and distributed along the axial direction of the outer support assembly (40).

8. The wind turbine tower structure according to claim 7, wherein: The first planar support structure (31) comprises a first outer planar member (311) and a first inner planar member (312), wherein the first outer planar member (311) is fixedly connected to the outer support assembly (40), and the first inner planar member (312) is fixedly connected to the first outer planar member (311), and the first inner planar member (312) is in a tic-tac-toe structure.

9. The wind turbine tower structure according to claim 7, wherein: The second planar support structure (32) includes a second outer planar member (321), a third outer planar member (322) and a second inner planar member (323); The third outer planar member (322) is located inside the second outer planar member (321) and is fixedly connected to the outer support assembly (40). The second outer planar member (321) and the third outer planar member (322) are located on the same plane. One end of the second inner planar member (323) is fixedly connected to the third outer planar member (322), and the other end is fixedly connected to the inner support assembly (50). The second inner planar member (323) is in a cross structure.

10. The wind turbine tower structure according to claim 7, wherein: The outer support assembly (40) includes a plurality of outer support tubes (41), wherein two adjacent outer support tubes (41) define a V-shaped space, wherein a plurality of tie rods (42) are arranged in the V-shaped space, wherein the plurality of tie rods (42) are located between the first planar support structure (31) and the second planar support structure (32), and the plurality of tie rods (42) are arranged crosswise.

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