A truss for a wind turbine tower and a wind turbine tower

Abstract

This application belongs to the field of new energy device technology, specifically relating to a truss for a wind turbine tower and the wind turbine tower itself. The truss of the wind turbine tower includes: support legs, comprising isosceles triangular structures formed by connecting steel pipes, with the apex of the isosceles triangular structures pointing downwards to form support feet; the base ends of four isosceles triangular structures are sequentially connected to form a quadrilateral support top, which is used to connect and support a wind turbine generator; a tensioning frame, fixedly connected between two adjacent isosceles triangular structures; and a platform, including a planar structure simultaneously fixedly connected between the four support legs, with at least two platforms arranged between the four support legs, and two of the platforms being parallel to the support top. Through the above-mentioned design, this application reduces the amount of steel used, facilitates processing and transportation, lowers project costs, and provides high structural rigidity, facilitating hoisting and improving overall structural reliability.

Description

Technical Field

[0001] This application belongs to the field of new energy device technology, specifically relating to a truss and a wind turbine tower. Background Technology

[0002] In the wind power industry, wind turbines are the main power generation equipment. Wind turbines are usually designed to be very large, and the hub of the turbine is placed at a high height to improve the power generation efficiency. Therefore, a wind turbine tower is installed below the wind turbine to support the wind turbine and increase the height of the hub.

[0003] However, as the size of wind turbines and the height of their hubs increase, the overall fixed support load on the wind turbine towers also increases. Especially when the hub height exceeds 120 meters, how to utilize the special structure of the wind turbine towers to balance the contradiction between support stability and transportation and construction costs has become a problem that needs to be solved. Utility Model Content

[0004] The purpose of this application is to provide a truss for a wind turbine tower and a wind turbine tower to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a truss for a wind turbine tower, comprising:

[0007] The support leg includes an isosceles triangular structure formed by connecting steel pipes. The apex of the isosceles triangular structure faces downward to form a support foot. The base ends of the four isosceles triangular structures are connected in sequence to form a quadrilateral support top. The support top is used to connect to and support the wind turbine.

[0008] The tensioning frame is fixedly connected between two adjacent isosceles triangular structures;

[0009] The platform includes a planar structure that is simultaneously fixedly connected between the four support legs, wherein at least two platforms are provided between the four support legs, and two of the platforms are parallel to the support top.

[0010] This application may further include the following technical solution: the tensioning frame includes at least two cross tie rods, and the two cross tie rods are diagonally connected to form a cross structure.

[0011] This application may further include the following technical solution: the tensioning frame also includes a hinge plate, and four cross tie rods are provided. The first end of the four cross tie rods is hinged to the hinge plate, and the second end is connected to the support leg to form a cross structure.

[0012] This application may further include the following technical solution: the cross tie rod includes a connecting rod and a connecting head, and the two connecting heads are respectively rotatably connected to the two ends of the connecting rod.

[0013] This application may further include the following technical solution: the truss further includes a support column, the support column is disposed in the center of the support leg, and the support column is fixedly connected to the support top by a steel pipe.

[0014] This application may further include the following technical solution: the platform includes a polygonal planar structure fixedly connected by angle steel, the polygonal planar structure is fixedly connected to each steel pipe of the support leg, and the polygonal planar structure is provided with connecting angle steel for fixing the polygonal planar structure and the support column.

[0015] This application may further include the following technical solution: the end of the support leg is provided with a grouting port, which is used for grouting concrete.

[0016] This application may further include the following technical solution: the steel pipe includes multiple branch pipes connected end to end, and the same steel strand is provided in the multiple branch pipes connected end to end.

[0017] This application may further include the following technical solution, wherein the steel strand includes prestressed steel strand.

[0018] Secondly, this application also provides a wind turbine tower, including a steel transition section and the truss of the wind turbine tower of the above embodiment. Beneficial effects

[0019] Compared with pure steel towers of the same height, the truss and tower structure designed in this application reduce the amount of steel used, lower the project cost, have high structural rigidity, are easy to process and transport, reduce the overall cost, and improve safety. Compared with pure steel cylinders and pure precast concrete cylinder structures of the same height, the material performance is stable and reliable, easy to process and transport, has low total weight, small component size, simple hoisting, and convenient installation. The foundation excavation and reinforced concrete usage are significantly reduced, the overall structural reliability is high, the quality is controllable, and the cost is controllable. The higher the height, the more obvious the cost advantage, and it also helps to reduce long-term maintenance costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the wind turbine tower structure according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the support leg structure according to an embodiment of this application;

[0022] Figure 3This is a schematic diagram of the tensioning bracket structure according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the steel pipe structure according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the cross tie rod structure according to an embodiment of this application.

[0025] The attached figures are labeled as follows: 100, support leg; 110, support foot; 120, support top; 130, steel pipe; 140, steel strand; 150, flange; 151, clearance hole; 152, clearance groove; 160, rope clamp; 200, platform; 300, tensioning frame; 310, cross tie rod; 311, connecting rod; 312, connector; 320, hinge plate. Detailed Implementation

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application.

[0027] In related technologies, to improve power generation efficiency, the weight of a single wind turbine is increasing, and the hub height is also increasing, leading to a greater load on the turbine. When the hub height is within 120 meters, a pure steel tower structure is more economical. However, as the hub height exceeds 120 meters, the top steel tower section + concrete tower structure has gained an advantage due to its sufficient stability. However, due to the inherent variability of concrete material properties, the quality of components cannot be precisely controlled. Furthermore, the concrete segments themselves are heavy and large, subject to limitations imposed by highway bridge and culvert dimensions, resulting in high land transportation and hoisting costs. Construction quality is also difficult to precisely control, leading to numerous quality accidents in recent years.

[0028] In view of this, the embodiments of this application utilize a triangular stabilizing structure to enhance the vertical support stability of the support leg, utilize a platform to increase the horizontal connection stability and share the vertical support pressure of the support leg, utilize a tensioning frame to further enhance the connection stability of the support leg, and utilize a combination structure of steel pipe and steel strand to further enhance structural stability. It also facilitates the splitting of long pipes into multiple short pipes, resulting in lower installation costs for the combination method.

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] Reference Figures 1-2 As shown, a truss for a wind turbine tower includes:

[0031] The support leg 100 comprises an isosceles triangular structure formed by connecting steel pipes 130. The apex of the support leg 100 points downwards to form a support foot 110. The base ends of the four support legs 100 are connected to form a quadrilateral support top 120, which is used to connect to and support the wind turbine generator. This embodiment utilizes triangular bracing to form a multi-faceted support leg 100 structure. The support leg 100 bears the weight transmitted downwards from the top, thereby improving structural stability. Furthermore, the use of steel pipes 130 reduces the amount of steel used, and the lightweight steel pipes 130 facilitate processing, transportation, and hoisting.

[0032] The tensioning bracket 300 is fixedly connected between two adjacent isosceles triangular structures.

[0033] The truss also includes a support column 400, which is located at the center of the support leg 100 and is fixedly connected to the support top 120 by a steel pipe.

[0034] Platform 200 includes a polygonal planar layered structure formed by connecting angle steel 210. The polygonal planar structure is fixedly connected to each steel pipe of the support leg 100. Connecting angle steel 220 for fixing the polygonal planar structure and the support column 400 is provided within the polygonal planar structure. At least two platforms 200 are provided between the four support legs 100, and are parallel to the support top 120 formed by connecting the four support legs 100. In this embodiment, the stability of the support leg 110 is enhanced by setting up the platform 200, and the multi-layered platform 200 stacked vertically shares the weight transmitted from above, further improving the support strength.

[0035] Optionally, the platform 200 is also equipped with steel beams, steel mesh, and steel railings. The steel beams, steel mesh, and steel railings are combined into a maintenance platform by welding or bolting, which facilitates safe walking or maintenance of the truss by users. They are also connected to the long steel pipe 130 of the platform 200 by welding or bolting, and to the support leg 100 by welding or bolting, which further improves the stability of the platform 200 and the connection strength between the platform 200 and the support leg.

[0036] Continue to refer to Figure 1 As shown, in some embodiments, the tensioning frame 300 includes at least two cross tie rods 310, which are staggered and connected to the support legs to form a cross structure.

[0037] Reference Figure 3 As shown, the tensioning frame 300 also includes cross tie rods 310 and hinge plates 320. Four cross tie rods 310 are provided. The first end of the cross tie rod 310 is hinged to the hinge plate 320, and the second end of the cross tie rod 310 is connected to the connection position of the platform 200 and the support leg 100 to form a cross structure.

[0038] Optionally, the cross tie rod 310 can be replaced according to different usage conditions. For example, the cross tie rod 310 can be surface-treated with epoxy zinc-rich primer, polyurethane paint, fluorocarbon paint, hot-dip galvanizing, and electro-galvanizing to improve the stability of the cross tie rod 310. In this embodiment, the tension bracket 300 further improves the stability of the overall structure, and the connection stability can also be improved by replacing the cross tie rod 310 with one of different tension strengths.

[0039] Reference Figure 4 As shown, the steel pipe includes multiple branch pipes 130 connected end-to-end. Each branch pipe 130 contains the same steel strand 140, thereby enhancing the connection stability of the multiple branch pipes and consequently improving the connection stability of the support legs and / or platform formed by the steel pipes. The support structures in this embodiment primarily employ hollow steel pipe 130 structures. The hollow structure reduces material usage, and the branch pipes shorten the length limitation of the steel pipes, thus reducing transportation costs.

[0040] Furthermore, refer to Figure 5 As shown, the cross tie rod 310 includes a connecting rod 311 and a connector 312. The two connectors 312 are rotatably connected to the two ends of the connecting rod 311, and the two connectors 312 are hinged to the ends of the connecting rod 311, which facilitates installation.

[0041] The steel strand 140 includes prestressed steel strands. The prestressed steel strands can be used to tighten the diagonal nodes on this side, enhancing overall stability. A grouting port is provided at the end of the support leg for pouring concrete, further improving the overall support stability of the installed truss.

[0042] This application also provides a wind turbine tower, including a steel transition section and a truss. The steel transition section provides a more stable connection between the truss and the wind turbine.

[0043] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0044] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] It will be understood by those skilled in the art that, in the description of the embodiments of this application, the term "and / or" merely indicates a relationship describing the associated objects, meaning that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the term "at least one" indicates any combination of at least two of a plurality of options, for example, including at least one of A, B, and C, which can represent any one or more elements selected from a set including communication between A, B, and C. Moreover, the term "multiple" means two or more, unless otherwise precisely specified.

[0048] In the description of the embodiments of this application, the terms "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A truss for a wind turbine tower, characterized in that include: The support leg includes an isosceles triangular structure formed by connecting steel pipes. The apex of the isosceles triangular structure faces downward to form a support foot. The base ends of the four isosceles triangular structures are connected in sequence to form a quadrilateral support top. The support top is used to connect to and support the wind turbine. The tensioning frame is fixedly connected between two adjacent isosceles triangular structures; The platform includes a planar structure that is simultaneously fixedly connected between the four support legs, wherein at least two platforms are provided between the four support legs, and two of the platforms are parallel to the support top.

2. The truss of claim 1, wherein, The tensioning frame includes at least two cross tie rods, which are intersected and connected to the support legs to form a cross structure.

3. A truss for a fan tower according to claim 2, wherein, The tensioning frame also includes a hinge plate, and four cross tie rods are provided. The first end of the four cross tie rods is hinged to the hinge plate, and the second end is connected to the support leg to form a cross structure.

4. A truss for a wind turbine tower according to claim 2 or 3, wherein, The cross tie rod includes a connecting rod and a connecting head, with the two connecting heads rotatably connected to both ends of the connecting rod.

5. The truss of a wind turbine tower according to claim 1, characterized in that, The truss also includes a support column, which is located at the center of the support leg and is fixedly connected to the support top by a steel pipe.

6. The truss of a wind turbine tower according to claim 5, characterized in that, The platform includes a polygonal planar structure fixedly connected by angle steel. The polygonal planar structure is fixedly connected to each steel pipe of the support leg, and the polygonal planar structure is provided with connecting angle steel for fixing the polygonal planar structure and the support column.

7. The truss of a wind turbine tower according to claim 1, characterized in that, The end of the support leg is provided with a grouting port, which is used for grouting concrete.

8. The truss of a wind turbine tower according to claim 1, characterized in that, The steel pipe includes multiple branch pipes connected end to end, and the same steel strand is installed in the multiple branch pipes connected end to end.

9. The truss of a wind turbine tower according to claim 8, characterized in that, The steel strands include prestressed steel strands.

10. A wind turbine tower, characterized in that, It includes a steel transition section for connecting the wind turbine and a truss for the wind turbine tower as described in any one of claims 1-9, wherein the steel transition section and the truss are fixedly connected.

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