Wind turbine foundation manufacturing method and wind turbine

Abstract

The objective is to provide a wind turbine base manufacturing method and a wind turbine that can be easily implemented. [Solution] The foundation manufacturing method according to the embodiment involves manufacturing the wind turbine foundation by pouring concrete into the framework of each part of the foundation that has been transported to the wind turbine installation site.

Description

Technical Field

[0001] The technology of the present disclosure relates to a method for manufacturing a base of a windmill and a windmill.

Background Art

[0002] Patent Document 1 discloses a method of installing a wind power generation device by diverting an existing structure. The structure includes a foundation and an iron framework structure fixed on the foundation. The installation method includes a step of forming a base part by removing at least a part of the framework structure. The installation method disclosed is a method including a step of fixing a wind power generation device to the base part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a method for manufacturing a base of a windmill and a windmill that can be easily realized.

Means for Solving the Problems

[0005] The method for manufacturing a base of a windmill according to an embodiment is characterized by manufacturing the base of the windmill by pouring concrete into the framework of each part of the base transported to the installation location of the windmill.

Brief Description of the Drawings

[0006] [Figure 1] FIG. 1 is a diagram showing an example of a windmill according to the first embodiment. [Figure 2] FIG. 2 is a conceptual diagram showing an example of the method for manufacturing a base of a windmill according to the first embodiment. [Figure 3]Figure 3 is a conceptual diagram showing an example of the manufacturing process for the wind turbine base according to the first embodiment. [Figure 4] Figure 4 is a flowchart showing an example of the flow of the wind turbine base manufacturing method according to the first embodiment. [Figure 5] Figure 5 illustrates variations in the manufacturing method of the base according to the first embodiment. [Modes for carrying out the invention]

[0007] The following describes an example of a wind turbine base manufacturing method and a wind turbine embodiment related to the technology disclosed herein, in accordance with the attached drawings.

[0008] First, let's explain the terminology used in the following explanation.

[0009] In the following embodiments, "A and / or B" is synonymous with "at least one of A and B." That is, "A and / or B" means that it may be A alone, or B alone, or a combination of A and B. Furthermore, in this specification, the same concept as "A and / or B" applies when expressing three or more things linked by "and / or."

[0010] [First Embodiment] In recent years, the active use of renewable energy has been called for from the perspective of SDGs (Sustainable Development Goals) and environmental protection, and wind power generation is one example of this. For example, Figure 1 is a diagram showing an example of a wind turbine according to the first embodiment. In the example shown in Figure 1, the wind turbine WM has blades BL, a nacelle N, a tower T, and a base BS. The base BS is a foundation for fixing the wind turbine WM to the ground and is made of reinforced concrete, for example. The tower T is a hollow tower installed on the base BS, and power transmission lines for transmitting the generated electricity are installed inside. The nacelle N is a housing located at the top of the tower T, and a generator for generating electricity using wind power is installed inside. The blades BL are connected to the generator installed in the nacelle N via a rotor shaft, and when wind is received, they rotate the rotor shaft in a predetermined direction, enabling power generation by the generator.

[0011] Considering the efficiency of wind power generation, it is considered desirable to make the blade BL somewhat larger. However, if the blade DL is made larger, the tower T will also become longer, so the entire wind turbine WM will become larger and heavier. For this reason, when installing a wind turbine WM, it is necessary to construct a strong base BS. Generally, a steel frame is created at the wind turbine WM installation site, and concrete is poured into it to create a base BS that can accommodate a large wind turbine WM.

[0012] However, since wind turbines (WM) need to be installed in locations where abundant wind power can be secured, such as along coastlines or in mountainous areas, it is time-consuming to manufacture the base (BS) from steel in such locations. Therefore, one possible method is to manufacture the base by first producing each section of the divided base (BW) in a manufacturing plant, using reinforced concrete (or steel-reinforced concrete, or reinforced steel-reinforced concrete) bases (hereinafter sometimes referred to as divided bases), transporting the divided bases to the wind turbine (WM) installation site, and assembling them at the installation site. However, transporting concrete divided bases in this way increases transportation costs from the manufacturing plant to the installation site, and requires large heavy machinery to move the divided bases, making the process complicated.

[0013] Therefore, in the first embodiment of the wind turbine WM base manufacturing method, only the framework of the divided base is manufactured at the manufacturing plant, the framework of the divided base is transported to the installation site, and the framework of the divided base is assembled at the installation site to create the framework of the entire base, after which concrete is poured to manufacture the wind turbine WM base.

[0014] For example, Figure 2 is a conceptual diagram showing an example of a wind turbine base manufacturing method according to the first embodiment. As shown in Figure 2, the wind turbine base manufacturing method according to the first embodiment consists of steps S1 to S4 described below.

[0015] In step S1, the framework BB of the wind turbine's divided base is manufactured at a designated manufacturing plant FO1. For example, in step S1, frameworks BB1 to BB16 of the divided base, obtained by dividing the base of the wind turbine to be installed into 16 sections, are manufactured. Here, each framework BB is manufactured as an independent structure, and has a structure in which steel frames and reinforcing bars are fixed by welding or wire. For example, if the shape of the base as viewed from above is a regular 16-sided polygon, each framework BB as viewed from above will have the same triangular shape. However, the shapes of each framework BB do not have to be exactly the same. For example, the shape of each framework BB can be any shape that matches the shape of the wind turbine base to be manufactured in the end. Furthermore, the framework BB may be made of various arbitrary materials other than steel frames and reinforcing bars, as long as it functions as a framework for the divided base, and at the very least, it should be made only of materials that will form the core of the concrete.

[0016] Next, in step S2, the pre-manufactured frame BB is transported to the wind turbine installation site by transport vehicle RC1 or the like. Here, since the frame BB does not contain concrete and is composed only of the frame of the divided base, it is lighter than transporting the divided base which contains concrete, and can be transported without preparing large heavy machinery.

[0017] Next, in step S3, each frame BB1 ​​to BB16 is assembled at the wind turbine installation site to manufacture the entire base frame BBP. For example, frame BBP is manufactured by arranging frames BB1 to BB16 side by side and fixing the gaps between them with welding or wire. Then, in step S4, a frame and the like are attached to frame BBP, and concrete is poured into it to manufacture base B.

[0018] For example, FIG. 3 is a conceptual diagram showing an example of the process for manufacturing the base of a windmill according to the first embodiment. As shown in FIG. 3, in the manufacture of the base B of the windmill according to the first embodiment, the frameworks BB1 to BB16 that have been manufactured in a predetermined location in advance are transported to the installation location of the windmill. At the installation location, the frameworks BB1 to BB16 are combined to manufacture the overall framework BBP of the base B. Then, by pouring concrete into the framework BBP, the base B is manufactured. By such a manufacturing method, it is possible to make the moving vehicles required for transporting from the manufacturing location of the divided base to the installation location of the windmill, and the heavy machinery for loading, unloading, and arranging the divided base, etc., smaller, so that the manufacture of the base B of the windmill can be made easier. Also, by reducing the fossil fuels required for transportation, the environmental load generated when manufacturing the windmill can be reduced.

[0019] Subsequently, an example of the process of the windmill base manufacturing method will be described using FIG. 4. FIG. 4 is a flowchart showing an example of the process of the windmill base manufacturing method according to the first embodiment. In the example shown in FIG. 4, an example using a framework BB obtained by dividing the base B into 16 parts will be described, but the embodiment is not limited to this, and frameworks BB divided into any number and any shape may be adopted.

[0020] First, at a predetermined manufacturing location, a steel framework BB divided into 16 parts is created (step S101). Next, each created framework BB is transported to the site (step S102), and by assembling the frameworks BB at the site, the overall framework BBP of the base B is manufactured (step S103). Then, by pouring concrete into the framework BBP, the base B is completed (step S104).

[0021] Incidentally, the manufacturing method of the base B described above is merely an example. If the frame BB of the divided base is transported to the installation position of the windmill and the base B is manufactured by combining concrete and the frame BB on-site, any method can be adopted. For example, any shape can be adopted for the shape of the base B, and accordingly, any shape and number of the frames BB of the divided base can be adopted. For example, when the base B is octagonal, the frames BB may each be eight triangles of the same shape. Also, the frames BB may each have different shapes.

[0022] Alternatively, the base B may be realized by combining the divided bases manufactured by pouring concrete into each of the frames BB at the installation location of the windmill. For example, FIG. 5 is a diagram for explaining a variation of the manufacturing method of the base B according to the first embodiment. In the example shown in FIG. 5, the frames BB1 to BB16 of the divided base are manufactured at a predetermined factory and transported to the installation location of the windmill. Then, at the installation location of the windmill, by pouring concrete into each of the frames BB1 to BB16, the divided bases B1 to B16 are manufactured at the installation location of the windmill. Then, the base B may be manufactured by combining the divided bases B1 to B16 on-site.

[0023] The description and illustration shown above are detailed explanations of the part related to the technology of the present disclosure and are merely examples of the technology of the present disclosure. For example, the explanations regarding the above-described configuration, function, operation, and effect are explanations regarding an example of the configuration, function, operation, and effect of the part related to the technology of the present disclosure. Therefore, it is needless to say that within the scope not departing from the gist of the technology of the present disclosure, the above-described description and illustration may be modified by deleting unnecessary parts, adding new elements, or replacing them. Also, in order to avoid complication and facilitate the understanding of the part related to the technology of the present disclosure, the explanations regarding common technical knowledge that does not particularly require explanation for enabling the implementation of the technology of the present disclosure are omitted in the above-described description and illustration.

[0024] All documents, patent applications, and technical standards described herein are incorporated by reference to the same extent as if each individual document, patent application, and technical standard were specifically and individually noted to be incorporated by reference. [Explanation of Symbols]

[0025] WM windmill BL Blade N Nacelle T Tower FO1 Manufacturing Plant BB BB1~BB16 BBP framework RC1 transport vehicle B BS base

Claims

1. A manufacturing process for producing the wind turbine base by pouring concrete into the framework of each section of the base that has been transported to the wind turbine installation site. A method for manufacturing the base of a wind turbine, including the construction of a wind turbine base.

2. A method for manufacturing a base according to claim 1, A manufacturing process for producing the framework of each part of the base manufactured at a designated location, A transportation process for transporting the manufactured frame to the wind turbine installation site. A method for manufacturing the foundation of a wind turbine, which further includes the following.

3. A wind turbine having a base manufactured by the base manufacturing method described in claim 1 or 2.

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