A swing-type wind turbine generator set

Abstract

The present application discloses a swing-type wind turbine generator set, comprising: an impeller, a tower, a column pile foundation, and a base foundation, wherein one end of the tower is connected to the impeller, and the other end of the tower is connected to the column pile foundation, and the column pile foundation is arranged between the tower and the base foundation, and the base foundation comprises a bracket and a column, wherein the bracket is arranged at the end of the column pile foundation, and a plurality of columns are provided, all of which are fixedly connected to the bracket, and the axes of the plurality of columns all intersect at the center of the impeller. With the wind turbine set adopting the above structure, the ends of all the columns on the base foundation form a spherical arc surface, and when the swing-type wind turbine generator set is tilted by the thrust of the wind, the weight of the column at the end of the bracket will generate a restoring torque, thereby making the wind turbine set always tend to a vertical state, and the wind turbine can minimize the bending moment stress of the column during the swing, making the structure of the base foundation more stable, and the entire base foundation is mainly composed of reinforced concrete, and the structure is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and more particularly to a swing-type wind turbine generator set. Background Art

[0002] Offshore wind power extracts energy from offshore winds, converts it into electricity, and supplies it to onshore power grids. Offshore wind power is a renewable, unlimited, clean energy source with enormous development prospects. Currently, offshore wind turbine support structures are primarily categorized into monopile, high-pile caps, jackets, gravity-type, and floating types.

[0003] Currently, the most common support structure for offshore wind turbines in shallow waters under 30 meters is a monopile foundation. For areas with poorer geology, a high-pile foundation can be used. For offshore wind turbines in waters between 30 and 60 meters, a jacket foundation is typically used. For areas deeper than 60 meters, a floating foundation is typically used. However, for waters between 30 and 50 meters, all of the various foundation types used for wind turbine support have certain drawbacks. Monopile foundations are impractical due to excessive wave loads; gravity foundations require extensive seabed leveling, which is a labor-intensive process. Jacket and floating foundations are both expensive and uneconomical.

[0004] In summary, how to provide an economical and practical wind turbine generator set in sea areas with a water depth of 30-50m is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a swing-type wind turbine generator set, which can be applied in sea areas with a water depth of 30-50m and is economical and practical.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A swinging wind turbine generator set includes: an impeller, a tower, a column pile foundation and a base foundation. One end of the tower is connected to the impeller, and the other end of the tower is connected to the column pile foundation. The column pile foundation is arranged between the tower and the base foundation. The base foundation includes a bracket and a column. The bracket is arranged at the end of the column pile foundation. There are multiple columns, all fixedly connected to the bracket, and the axes of the multiple columns intersect at the center of the impeller.

[0008] A swing-type wind turbine generator set has a support frame formed by a plurality of cross bars, and a plurality of upright columns are arranged on the bottom surfaces of the cross bars.

[0009] A swing-type wind turbine generator set comprises upright columns comprising ballast upright columns, and the ballast upright columns are arranged at the ends of cross bars.

[0010] A swing-type wind turbine generator set, wherein the columns further include support columns, and the support columns are arranged on the crossbar between the center of the bracket and the ballast column.

[0011] A swing-type wind turbine generator set has pile shoes on the bottom surfaces of the ballast columns and the support columns.

[0012] A swing-type wind turbine generator set, wherein the axes of the pile shoes intersect at the center of the impeller.

[0013] A swing-type wind turbine generator set has an active ballast system in the ballast column.

[0014] A swing-type wind turbine generator set has diagonal braces arranged between a column pile foundation and a crossbar.

[0015] A swing-type wind turbine generator set has at least three crossbars.

[0016] A swing-type wind turbine generator set has a base foundation configured as a reinforced concrete structure.

[0017] Compared with the background technology, the swinging wind turbine generator set provided in this application includes: an impeller, a tower, a column pile foundation and a base foundation. One end of the tower is connected to the impeller, and the other end of the tower is connected to the column pile foundation. The column pile foundation is arranged between the tower and the base foundation. The base foundation includes a bracket and a column. The bracket is arranged at the end of the column pile foundation. There are multiple columns, all of which are fixedly connected to the bracket, and the axes of the multiple columns all intersect at the center of the impeller.

[0018] Multiple columns are fixed on the bracket. The lengths of the columns are different. The columns close to the column pile foundation are longer, and the columns close to the end of the bracket are shorter. The axes of each column intersect at the center of the impeller. In this way, the ends of all the columns form a spherical arc surface. When the swinging wind turbine generator set is tilted by the thrust of the wind, the weight of the column at the end of the bracket will generate a restoring torque, so that the wind turbine set always tends to be in a vertical state. In addition, the wind turbine can minimize the bending moment force of the column during the swing, making the structure of the base foundation more stable. The wind turbine provided by the present application has a base foundation that can swing underwater. Compared with the jacket foundation, there is no need for piling operations. Compared with the gravity foundation, there is no need for seabed leveling operations. Compared with the floating foundation, there is no need for a mooring system.

[0019] In addition, the entire base foundation of the swing-type wind turbine floats on the water before the ballast is inserted, so that the wind turbine can be hoisted at the dock and then towed as a whole to the operating sea area, making installation convenient and quick. The entire base foundation is mainly composed of reinforced concrete, and its economic cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 This is the overall structural diagram of the swing-type wind turbine generator set provided by the present invention;

[0022] Figure 2 This is a front view of the swing-type wind turbine generator set provided by the present invention;

[0023] Figure 3 A top view of the swing-type wind turbine generator set provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the connection of the diagonal bracing rods provided by the present invention.

[0025] in:

[0026] 1-Impeller, 2-Tower, 3-Pile Foundation,

[0027] 4-base foundation, 41-bracket, 411-crossbar, 42-column, 421-ballast column, 422-support column,

[0028] 5-pile shoe, 6-diagonal support rod, 7-water surface, 8-water bottom mud surface. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] The swing type wind turbine generator set provided in the embodiment of the present application can be referred to the attached specification. Figure 1 To the attached Figure 4, including: an impeller 1, a tower 2, a column pile foundation 3 and a base foundation 4, one end of the tower 2 is connected to the impeller 1, and the other end of the tower 2 is connected to the column pile foundation 3, the column pile foundation 3 is arranged between the tower 2 and the base foundation 4, the base foundation 4 includes a bracket 41 and a column 42, the bracket 41 is arranged at the end of the column pile foundation 3, there are multiple columns 42, all of which are fixedly connected to the bracket 41, and the axes of the multiple columns 42 all intersect at the center of the impeller 1.

[0032] It should be noted that impeller 1 comprises blades and a hub. Three-bladed wind turbines are common in wind turbines, and the component located at the center of the three blades is the hub. The hub's function is to connect the blades and form a single unit. Therefore, the center of impeller 1 is the center of the hub. Impeller 1 and tower 2 are located above water surface 7, base foundation 4 is located above the bottom mud surface 8, and pile foundation 3 is located between tower 2 and base foundation 4.

[0033] Multiple columns 42 are fixed to the bracket 41. The columns 42 have different lengths. The columns 42 located below the column pile foundation 3 are arranged in a vertical direction, while the other columns 42 located on the bracket 41 are tilted at a certain angle relative to the vertical direction. The columns 42 near the column pile foundation 3 have a smaller tilt angle and are longer, while the columns 42 near the end of the bracket 41 have a larger tilt angle and are shorter. This ensures that the extended axes of each column 42 intersect at a point, namely, at the center of the impeller 1. At this point, the bottom surfaces of all columns 42 pass through a spherical arc surface. Therefore, the swing-type wind turbine generator set is equivalent to a "tumbler". When the swing-type wind turbine generator set is tilted by the thrust of the wind, the weight of the columns 42 located at the end of the bracket 41 will generate a restoring torque, thereby keeping the wind turbine set in a vertical position. In addition, the wind turbine can minimize the bending moment force on the columns 42 during swinging, making the structure of the base foundation 4 more stable.

[0034] As the instruction manual Figure 3 As shown, the bracket 41 is formed by a plurality of crossbars 411, and a plurality of uprights 42 are provided on the bottom surfaces of the crossbars 411. The crossbars 411 are evenly distributed at certain angles within a circle. For example, in the embodiment provided in this application, six crossbars 411 are provided to form the bracket 41, with a 60-degree interval between each two crossbars 411, and one end of each of the six crossbars 411 intersects at the same location.

[0035] The columns 42 include ballast columns 421, which are located at the ends of the crossbars 411. The function of the ballast columns 421 is to generate a restoring torque when the wind turbine is tilted. The ballast in the ballast columns 421 can be solid ballast or water ballast. Solid ballast is achieved by filling the ballast columns 421 with solids such as sand and gravel. Water ballast can be achieved by installing valves in the ballast columns 421. When the wind turbine is towed to the operating sea area, the valves are opened to fill the ballast columns 421 with water, allowing the base foundation 4 to sink to the bottom of the water.

[0036] The columns 42 also include support columns 422, which are arranged on the crossbar 411 between the center of the bracket 41 and the ballast column 421. Each crossbar 411 can be evenly provided with multiple support columns 422 at a certain distance. Taking the specific embodiment provided in this application as an example, a support column 422 is provided in the vertical direction of the intersection of six crossbars 411, and each crossbar 411 is provided with three support columns 422 at equal intervals between the vertical support columns 422 and the ballast column 421. The function of the support columns 422 is to support the wind turbine. Therefore, compared with the ballast column 421, the diameter of the support columns 422 is smaller. The specific number of the support columns 422 is set according to actual needs.

[0037] The bottom surfaces of the ballast columns 421 and the support columns 422 are both provided with pile shoes 5. The bottom surfaces of each ballast column 421 and support column 422 are both provided with pile shoes 5. The function of the pile shoes 5 is to ensure that the force point of the entire wind turbine is always above the mud surface during the swinging motion of the wind turbine, preventing the columns 42 from sinking below the mud surface. Therefore, the diameter of the pile shoes 5 is larger than the diameter of the columns 42 to increase the contact area between the bottom surfaces of the pile shoes 5 and the mud surface 8 of the water bottom, and the thickness of the pile shoes 5 is usually set according to actual conditions.

[0038] The axes of the pile shoes 5 intersect at the center of the impeller 1. The pile shoes 5 are arranged at the bottom of the columns 42. Depending on the arrangement of the columns 42, different pile shoes 5 have different inclination angles relative to the vertical direction. The pile shoes 5 and columns 42 in the same direction have the same axis, and all axes intersect at the center of the impeller 1, so that the wind turbine is always inclined to the vertical state.

[0039] An active ballast system is provided in the ballast column 421. This system can be installed in the ballast column 421 as needed. The active ballast system can correct for wind-induced tilting torques generated by the wind turbine or tilt angles caused by seabed mud scouring. This improves the stability of the base foundation 4 when the swaying wind turbine is tilted by wind thrust.

[0040] As the instruction manual Figure 4As shown, diagonal braces 6 are provided between the column pile foundation 3 and the crossbar 411. The diagonal braces 6 can strengthen the fixation between the column pile foundation 3 and the base foundation 4, making the structure more stable. The diagonal braces 6 can be optionally provided as needed. When the column pile foundation 3 and the base foundation 4 are sufficiently fixed, the diagonal braces 6 can be omitted.

[0041] The number of crossbars 411 is at least three. Considering the stability of the base foundation 4, the number of crossbars 411 is at least three, and can also be set to four, five, six, eight, etc. The number of crossbars 411 can usually be finally determined based on numerical analysis or experiments of the swing-type wind turbine generator set.

[0042] The base foundation 4 is configured as a reinforced concrete structure. A reinforced concrete structure refers to a structure made of concrete reinforced with steel bars. It is made of steel bars and concrete, with the steel bars bearing tension and the concrete bearing compression. Reinforced concrete structures are easy to obtain materials and have low construction costs. In addition, the steel bars will be wrapped in concrete, so even in water, special processes can be used to make the concrete corrosion-resistant, making it less likely for the steel bars to rust. Therefore, the durability of the base foundation 4 using a reinforced concrete structure is guaranteed, extending its service life. In addition, the reinforced concrete structure has good plasticity and can be made into components of various shapes according to demand, which facilitates the manufacture of the base foundation 4.

[0043] The above is a detailed introduction to the swing-type wind turbine generator set provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A swing-type wind turbine generator set, characterized in that: include: An impeller (1), a tower (2), a column pile foundation (3) and a base foundation (4), wherein one end of the tower (2) is connected to the impeller (1), and the other end of the tower (2) is connected to the column pile foundation (3), the column pile foundation (3) is arranged between the tower (2) and the base foundation (4), and the base foundation (4) comprises a bracket (41) and a column (42), the bracket (41) is arranged at the end of the column pile foundation (3), a plurality of columns (42) are provided, and all are fixedly connected to the bracket (41), and the axes of the plurality of columns (42) intersect at the center of the impeller (1); The bracket (41) is formed by a plurality of cross bars (411), and the plurality of upright posts (42) are all arranged on the bottom surface of the cross bars (411); The column (42) includes a ballast column (421), and the ballast column (421) is arranged at the end of the crossbar (411); The column (42) further includes a supporting column (422), wherein the supporting column (422) is provided on the crossbar (411) between the center of the bracket (41) and the ballast column (421); The bottom surfaces of the ballast column (421) and the support column (422) are both provided with pile shoes (5); The axes of the pile shoes (5) intersect at the center of the impeller (1).

2. The swing type wind turbine generator set according to claim 1, characterized in that: An active ballast system is provided in the ballast column (421).

3. The swing type wind turbine generator set according to claim 1, characterized in that: A diagonal brace (6) is provided between the column pile foundation (3) and the crossbar (411).

4. The swing-type wind turbine generator set according to claim 1, characterized in that: The number of the cross bars (411) is at least three.

5. The swing-type wind turbine generator set according to claim 1, characterized in that: The base foundation (4) is configured as a reinforced concrete structure.

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