Hybrid lattice type wind power tower tube structure

Abstract

The utility model discloses a mixed lattice type wind power tower drum structure which comprises a plurality of concrete filled steel tube supporting columns, solid web plates, lacing rods and ring beams, and the concrete filled steel tube supporting columns, the solid web plates, the lacing rods and the ring beams are connected to form a tower drum with the section in a biaxial symmetry polygon shape. The concrete-filled steel tube struts are positioned at the corners of the tower drum; the solid webs are arranged between the concrete filled steel tube struts at the lower part of the wind power tower drum; the lacing rods are connected between the concrete filled steel tube supporting columns on the upper portion of the wind tower drum. The ring beams are located between the solid web plates and the lacing rods and fixedly connected with the concrete-filled steel tube supporting columns. The utility model has the advantages of favorable lateral stiffness and bearing performance, stable structure, low building cost and convenience in construction.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a hybrid lattice wind power tower structure. Background Art

[0002] A wind turbine tower is a crucial support structure for wind turbines. It's typically a tall, columnar structure constructed of materials like steel or concrete. Connecting the ground foundation to the wind turbine on top, the tower supports various components of the wind turbine, such as the nacelle, hub, and blades, enabling stable operation at high altitudes. It also withstands the wind turbine's own weight, wind loads, inertial forces, and various dynamic and static loads generated during operation. It transfers these loads safely and reliably to the foundation and subgrade, ensuring the proper functioning of the entire wind turbine system under varying environmental conditions and operating conditions.

[0003] As the tower height increases, the deadweight and lateral stiffness requirements of the wind turbine tower will increase exponentially. Under the premise of meeting the lateral stiffness requirements, how to achieve lightweight towers is one of the key issues that urgently need to be solved in tower construction. The lattice tower is connected by a number of pillars and tie pipes, which has the advantage of being lightweight. For example, patents with publication numbers CN219034905U and CN113847210A respectively provide different lattice tower structures. However, the lateral stiffness of the above-mentioned existing lattice towers is still relatively low, and it is difficult to ensure their structural stability when the tower height exceeds 140m. Therefore, there is an urgent need to develop a lightweight lattice wind turbine tower structure with higher lateral stiffness. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a hybrid lattice wind turbine tower structure, which is lightweight, has good lateral stiffness and load-bearing performance, is structurally stable, has low construction cost, and is easy to construct.

[0005] In order to achieve the above-mentioned object, the utility model provides a hybrid lattice wind turbine tower structure, comprising a plurality of steel tube concrete columns, solid webs, tie rods and ring beams, wherein the plurality of steel tube concrete columns, solid webs, tie rods and ring beams are connected to form a tower having a biaxially symmetrical polygonal cross section;

[0006] The steel tube concrete columns are located at the corners of the tower; the solid webs are arranged between the steel tube concrete columns at the lower part of the wind turbine tower; the tie rods are connected between the steel tube concrete columns at the upper part of the wind tower; the ring beam is located between the solid webs and the tie rods, and is connected and fixed to each steel tube concrete column.

[0007] Furthermore, the steel tube concrete pillar adopts a prefabricated steel tube concrete pillar, and its cross-sectional shape is any one of circular, quadrilateral, hexagonal and octagonal.

[0008] Furthermore, the solid web plate is made of precast reinforced concrete plate or steel plate, and the steel plate is a flat steel plate or a corrugated steel plate.

[0009] Furthermore, the solid web and the concrete-filled steel tube pillars are connected by bolt connection or welding.

[0010] Furthermore, the tie rod is made of a hollow circular steel tube or a rectangular steel tube.

[0011] Furthermore, the connection between the steel tube concrete pillar and the tie rod is welding.

[0012] Furthermore, the number of sides of the biaxially symmetrical polygonal cross-section of the wind turbine tower is an even number, and the wind turbine tower is any one of a cone shape, a column shape, and a lower column shape and an upper cone shape.

[0013] Beneficial effects of the utility model:

[0014] 1. This utility model utilizes a solid web at the lower portion of the tower, effectively increasing the tower's lateral stiffness and load-bearing capacity. The upper portion utilizes lattice columns, or tie rods, effectively reducing the tower's deadweight. The hollowed-out lattice columns effectively mitigate wind loads on the upper portion of the tower, reducing lateral forces acting on the tower. Furthermore, compared to some large, purely solid cylindrical towers, this structural form reduces both material and construction costs, thereby improving the overall economic efficiency of wind power projects.

[0015] 2. The utility model adopts steel tube concrete as the main lateral resistance member, and adopts solid webs and tie rods to adjust the tower stiffness according to the stress state of the tower, and the structural stress performance is excellent; the connection scheme between steel tube concrete, solid webs and tie rods can be flexibly adjusted in height and angle according to the terrain, so as to better utilize wind energy resources at different heights and positions, and it is also relatively more convenient to install in such complex terrain, which is conducive to improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Side view of Example 1.

[0017] Figure 2 AA cross-sectional view of Example 1.

[0018] Figure 3 Side view of Example 2.

[0019] Figure 4 BB cross-sectional view of Example 2.

[0020] In the figure: 1. Steel tube concrete pillar; 2. Solid web; 3. Ring beam; 4. Tie rod. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] The utility model discloses a hybrid lattice-type wind power tower structure.

[0023] Example 1:

[0024] Reference Figure 1 and Figure 2 A hybrid lattice wind turbine tower structure, which is a tower structure with a biaxially symmetrical hexagonal cross-section composed of 6 steel tube concrete columns 1, a solid web 2, a tie rod 4 and a ring beam 3. The wind turbine tower with a biaxially symmetrical hexagonal cross-section is a lower cylindrical-upper conical structure as a whole. The steel tube concrete columns 1 are located at the corners of the hexagonal cross-section of the wind turbine tower, and the solid web 2 is arranged between the steel tube concrete columns 1 at the lower part of the wind turbine tower. In this embodiment, the solid web 2 adopts a prefabricated reinforced concrete plate, and the connection method between the solid web 2 and the steel tube concrete columns 1 is bolt connection. The tie rod 4 is connected between the steel tube concrete columns 1 at the upper part of the wind tower. In this embodiment, the tie rod 4 adopts a hollow circular steel tube; the tie rod 4 is placed in two directions: horizontally and obliquely. The connection method between the steel tube concrete columns 1 and the tie rod 4 is welding. The ring beam 3 is located between the solid web 2 and the tie rod 4, and is welded and fixed to each steel tube concrete column 1.

[0025] Example 2:

[0026] Reference Figure 3 and Figure 4 A hybrid lattice wind turbine tower structure, which is a tower structure with a biaxially symmetrical octagonal cross-section composed of 8 steel tube concrete columns 1, solid webs 2, tie rods 4 and ring beams 3. The wind turbine tower with a biaxially symmetrical octagonal cross-section is a columnar structure as a whole. The steel tube concrete columns 1 are located at the corners of the hexagonal cross-section of the wind turbine tower, and the solid webs 2 are arranged between the steel tube concrete columns 1 at the lower part of the wind turbine tower. In this embodiment, the solid webs 2 are made of flat steel plates, and the connection method between the solid webs 2 and the steel tube concrete columns 1 is welding. The tie rods 4 are connected between the steel tube concrete columns 1 at the upper part of the wind tower. In this embodiment, the tie rods 4 are made of hollow rectangular steel tubes; the tie rods 4 are placed in two directions: horizontally and obliquely. The connection method between the steel tube concrete columns 1 and the tie rods 4 is welding. The ring beam 3 is located between the solid webs 2 and the tie rods 4, and is bolted and fixed to each steel tube concrete column 1.

[0027] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A hybrid lattice wind turbine tower structure, characterized by: The tower comprises a plurality of steel tube concrete pillars (1), solid webs (2), tie rods (4) and ring beams (3), wherein the plurality of steel tube concrete pillars (1), solid webs (2), tie rods (4) and ring beams (3) are connected to form a tower with a biaxially symmetrical polygonal cross section; The steel tube concrete pillars (1) are located at the corners of the tower; the solid webs (2) are arranged between the steel tube concrete pillars (1) at the lower part of the wind turbine tower; the tie rods (4) are connected between the steel tube concrete pillars (1) at the upper part of the wind turbine tower; the ring beam (3) is located between the solid webs (2) and the tie rods (4), and is connected and fixed to each steel tube concrete pillar (1).

2. The hybrid lattice wind turbine tower structure according to claim 1, characterized in that: The steel tube concrete pillar (1) adopts a prefabricated steel tube concrete column, and its cross-sectional shape is any one of a circle, a quadrilateral, a hexagon and an octagon.

3. A hybrid lattice wind turbine tower structure according to claim 1 or 2, characterized in that: The solid web plate (2) is a prefabricated reinforced concrete plate or a steel plate, and the steel plate is a flat steel plate or a corrugated steel plate.

4. The hybrid lattice wind turbine tower structure according to claim 3, characterized in that: The solid web (2) and the steel tube concrete pillar (1) are connected by bolt connection or welding.

5. The hybrid lattice wind turbine tower structure according to claim 4, characterized in that: The tie rod (4) is made of a hollow circular steel pipe or a rectangular steel pipe.

6. The hybrid lattice wind turbine tower structure according to claim 5, characterized in that: The connection between the steel tube concrete pillar (1) and the tie rod (4) is welding.

7. The hybrid lattice wind turbine tower structure according to claim 6, characterized in that: The number of sides of the biaxially symmetrical polygonal cross-section of the wind turbine tower is an even number, and the wind turbine tower is any one of a cone shape, a column shape, and a lower column shape and an upper cone shape.

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