Lightweight wind turbine whole machine structure

Abstract

The utility model discloses a kind of lightweight wind turbine complete machine structures, including impeller system, metal tube lattice type tower, transmission chain assembly, transmission chain installation cylinder and metal tube lattice type nacelle;Transmission chain assembly is installed in transmission chain installation cylinder and is connected with impeller system, impeller system is connected with transmission chain installation cylinder, transmission chain installation cylinder is fixed in metal tube lattice type nacelle, metal tube lattice type nacelle is installed at the top of metal tube lattice type tower;The utility model is simple in structure, high stability, can realize the lightweight installation of large megawatt wind turbine, solve the design limit problem caused by casting size too large, main machine weight too large.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine generator structure, and in particular to a lightweight wind turbine generator structure for large wattage and megawatts. Background Technology

[0002] Conventional horizontal axis wind turbines can only be designed up to 30MW in maximum power. They generally use cylindrical towers, and the base supporting the drive train inside the nacelle is a casting, which is heavy and difficult to expand in size. This results in a small space in the wind turbine nacelle, and these problems limit the maximum power of horizontal axis wind turbines. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a lightweight, high-wattage wind turbine structure. The tower is a metal tubular lattice structure, replacing the current all-steel cylindrical tower structure; the main unit nacelle at the top of the tower is a metal tubular lattice structure, replacing the current cast base; the transmission chain is encapsulated inside a circular steel cylinder, which replaces the current base; the impeller system uses two blades, replacing the current three-blade design; this enables the realization of high-wattage wind turbines, solving the design limitations caused by excessively large castings and heavy main units.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: a lightweight wind turbine generator structure, including an impeller system, a metal tube lattice tower, a transmission chain assembly, a transmission chain mounting cylinder, and a metal tube lattice nacelle; the transmission chain is installed in the transmission chain mounting cylinder and connected to the impeller system, the impeller system is connected to the transmission chain mounting cylinder, the transmission chain mounting cylinder is fixed inside the metal tube lattice nacelle, and the metal tube lattice nacelle is installed on the top of the metal tube lattice tower.

[0005] Furthermore, the metal tubular lattice cabin includes columns, an upper outer ring, a lower outer ring, an upper inner ring, a lower inner ring, and connecting rods; the upper outer ring, lower outer ring, upper inner ring, and lower inner ring are all polygonal in structure; the upper outer ring and lower outer ring are connected by columns; the upper inner ring and lower inner ring are connected by columns and are located at the center of the upper outer ring and lower outer ring; the upper outer ring and upper inner ring are connected by connecting rods; and the lower outer ring and lower inner ring are connected by connecting rods.

[0006] Furthermore, the distance between any two opposite sides of the cross-section of the metal tube lattice tower is in the range of 5-30 meters.

[0007] Furthermore, the cross-section of the metal tube lattice tower is a regular polygon, and the distance between any two opposite sides of the cross-section is 10-25 meters.

[0008] Furthermore, the cross-section of the metal tube lattice tower has a regular polygon shape that is octagonal.

[0009] Furthermore, the transmission chain mounting cylinder is a cylindrical or polygonal metal cylinder.

[0010] Furthermore, the bottom end of the metal tube lattice tower is installed on the ground or seabed.

[0011] Furthermore, the impeller system includes blades and a hub, with the blades connected to the hub.

[0012] Furthermore, the impeller system has 2-6 blades.

[0013] Furthermore, the transmission chain assembly includes a main shaft, a gearbox, and a generator. One end of the main shaft is connected to the hub, and the other end of the main shaft is connected to the generator through the gearbox.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. This utility model proposes to use a simple cylindrical or polygonal metal cylinder to install the transmission chain, replacing the traditional casting base. The combination of the cylindrical or polygonal metal cylinder and the metal tube lattice structure of the machine compartment provides stable support for the transmission chain.

[0016] 2. This utility model proposes a metal tubular lattice cabin structure, which can significantly reduce weight and cost, and increase cabin size.

[0017] 3. The metal tube lattice tower and its cross-sectional structure proposed in this utility model replace the current all-steel cylindrical tower structure, which saves material costs, reduces weight, and ensures the stability of the wind turbine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a metal tubular lattice cabin.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of a metal tubular lattice tower. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] See Figures 1 to 2 As shown, the lightweight wind turbine generator set structure provided in this embodiment includes an impeller system 01, a metal tube lattice tower 02, a transmission chain assembly, a transmission chain mounting cylinder 03, and a metal tube lattice nacelle 04.

[0025] The impeller system 01 includes blades and a hub, with the blades connected to the hub. The number of blades can be 2-6, preferably double-bladed. The transmission chain assembly (not shown in the figure) includes a main shaft, a gearbox, and a generator. One end of the main shaft is connected to the hub, and the other end is connected to the generator via the gearbox. The transmission chain assembly is installed in the transmission chain mounting cylinder 03. The hub of the impeller system 01 is connected to the transmission chain mounting cylinder 03. The transmission chain mounting cylinder 03 is inserted into and fixed within the metal tube lattice nacelle 04. The transmission chain mounting cylinder 03 is preferably a cylindrical steel cylinder, but a polygonal steel cylinder can also be used. The metal tube lattice nacelle 04 is preferably a steel tube lattice nacelle, which is installed on the top of the metal tube lattice tower 02. The bottom end of the metal tube lattice tower 02 is installed on the ground or seabed via a bottom bracket 05. The metal tube lattice tower 02 is preferably a steel tube lattice tower.

[0026] See Figure 3 As shown, the cross-section of the metal tubular lattice-type nacelle 04 is a regular octagon, and the area of ​​this cross-section is larger than the cross-sectional area of ​​the metal tubular lattice-type tower 02. The metal tubular lattice-type nacelle 04 includes a column 041, an upper outer ring 042, a lower outer ring 043, an upper inner ring 044, a lower inner ring 045, and a connecting rod 046. The upper outer ring 042, lower outer ring 043, upper inner ring 044, and lower inner ring 045 are all regular octagonal structures. The upper outer ring 042 and lower outer ring 043 are connected by the column 041, and the upper inner ring 044 and lower inner ring 045 are connected by the column 041 and located at the center of the upper outer ring 042 and lower outer ring 043. The upper outer ring 042 and upper inner ring 044 are connected by the connecting rod 046, and the lower outer ring 043 and lower inner ring 045 are connected by the connecting rod 046. See also Figure 4 As shown, the cross-section of the metal tube lattice tower 02 is also a regular octagon. The distance between any two opposite sides of the cross-section is in the range of 5-30 meters, preferably 10-25 meters, and 15 meters is used in this embodiment.

[0027] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A lightweight wind turbine generator structure, characterized in that: It includes an impeller system, a metal tube lattice tower, a drive chain assembly, a drive chain mounting cylinder, and a metal tube lattice nacelle; the drive chain is installed in the drive chain mounting cylinder and connected to the impeller system, the impeller system is connected to the drive chain mounting cylinder, the drive chain mounting cylinder is fixed inside the metal tube lattice nacelle, and the metal tube lattice nacelle is installed on the top of the metal tube lattice tower.

2. The lightweight wind turbine generator structure according to claim 1, characterized in that: The metal tubular lattice cabin includes columns, an upper outer ring, a lower outer ring, an upper inner ring, a lower inner ring, and connecting rods; the upper outer ring, lower outer ring, upper inner ring, and lower inner ring are all polygonal in structure; the upper outer ring and lower outer ring are connected by columns; the upper inner ring and lower inner ring are connected by columns and are located at the center of the upper outer ring and lower outer ring; the upper outer ring and upper inner ring are connected by connecting rods; and the lower outer ring and lower inner ring are connected by connecting rods.

3. The lightweight wind turbine generator structure according to claim 1, characterized in that: The distance between any two opposite sides of the cross-section of the metal tube lattice tower ranges from 5 to 30 meters.

4. The lightweight wind turbine generator structure according to claim 3, characterized in that: The cross-section of the metal tube lattice tower is a regular polygon, and the distance between any two opposite sides of the cross-section is 10-25 meters.

5. The lightweight wind turbine generator structure according to claim 4, characterized in that: The cross-section of the metal tube lattice tower is a regular octagon.

6. The lightweight wind turbine generator structure according to claim 1, characterized in that: The drive chain mounting cylinder is a cylindrical or polygonal metal cylinder.

7. The lightweight wind turbine generator structure according to claim 1, characterized in that: The bottom of the metal tube lattice tower is installed on the ground or seabed.

8. The lightweight wind turbine generator structure according to claim 1, characterized in that: The impeller system includes blades and a hub, with the blades connected to the hub.

9. The lightweight wind turbine generator structure according to claim 1, characterized in that: The impeller system has 2-6 blades.

10. The lightweight wind turbine generator structure according to claim 8, characterized in that: The transmission chain assembly includes a main shaft, a gearbox, and a generator. One end of the main shaft is connected to the hub, and the other end of the main shaft is connected to the generator through the gearbox.

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