阅读说明：本技术 采用槽型减摇水舱的漂浮式风机基础及风力发电机组 (Floating type fan foundation adopting groove type anti-rolling water tank and wind generating set ) 是由 周昳鸣 郭小江 闫姝 穆延非 郑枫 李华 杨立华 袁辉 张中鼎 孔超 管春雨 于 2020-12-30 设计创作，主要内容包括：本发明公开一种采用槽型减摇水舱的漂浮式风机基础及风力发电机组,槽型减摇水舱的漂浮式风机基础包括系泊系统、基础结构以及设置在海底的锚固基础,系泊系统将基础结构固定在海底的锚固基础上,基础结构包括等截面直立柱和变截面直立柱,等截面直立柱下端连接变截面直立柱上端,变截面直立柱的截面从上到下逐渐增大,变截面直立柱的下部设置减摇水舱,减摇水舱沿周向分为若干分舱,分舱之间通过连通槽连通本发明槽型减摇水舱的漂浮式风机基础可以使结构整体重心下移,增大阻尼系数,减小固有频率,增加了基础平台稳性；并且减少了吃水深度,从而扩大了该基础平台结构的适用范围。(The invention discloses a floating type fan foundation adopting a groove-shaped anti-rolling water tank and a wind generating set, wherein the floating type fan foundation of the groove-shaped anti-rolling water tank comprises a mooring system, a foundation structure and an anchoring foundation arranged on the seabed, the mooring system fixes the foundation structure on the anchoring foundation of the seabed, the foundation structure comprises an upright post with a uniform cross section and an upright post with a variable cross section, the lower end of the upright post with the uniform cross section is connected with the upper end of the upright post with the variable cross section, the cross section of the upright post with the variable cross section is gradually increased from top to bottom, the anti-rolling water tank is arranged at the lower part of the upright post with the variable cross section, the anti-rolling water tank is circumferentially divided into a plurality of sub-tanks, and the sub-tanks are communicated with each other through communicating grooves; and the draught depth is reduced, so that the application range of the foundation platform structure is expanded.)

1. The utility model provides an adopt floating formula fan foundation of cell type anti-sway water tank, a serial communication port, including mooring system (4), foundation structure (3) and the anchor basis of setting in the seabed, mooring system (4) fix foundation structure (3) on the anchor basis of seabed, foundation structure (3) are including equal cross-section upright post (31) and variable cross-section upright post (32), equal cross-section upright post (31) lower extreme is connected variable cross-section upright post (32) upper end, the cross-section from the top down of variable cross-section upright post (32) is crescent, the lower part of variable cross-section upright post (32) sets up anti-sway water tank (5), anti-sway water tank (5) divide into a plurality of sub-cabins along circumference, communicate through intercommunication groove (6) between the sub-cabin, anti-sway water tank (5) are provided with at least one deck.

2. The floating type wind turbine foundation adopting the trough type anti-rolling water tank as claimed in claim 1, wherein a water level monitoring sensor is arranged in the anti-rolling water tank (5).

3. The floating type wind turbine foundation adopting the trough type anti-rolling water tank as claimed in claim 1, wherein the anti-rolling water tank (5) is provided with three layers, and each layer of anti-rolling water tank (5) is independent.

4. The floating fan foundation adopting the tank type anti-rolling water tank as claimed in claim 1, wherein the anti-rolling water tank (5) is divided into 4, 6 or 8 sub-tanks.

5. The floating type fan foundation adopting the groove type anti-rolling water tank as claimed in claim 1, wherein the anti-rolling water tank (5) comprises an outer cylinder and an inner cylinder, an annular space is formed between the inner cylinder and the outer cylinder, a partition plate is arranged in the annular space to divide the annular space into a plurality of sub-tanks, and communication grooves (6) communicated with the sub-tanks are arranged in the inner cylinder, and the number of the communication grooves is half of the number of the sub-tanks.

6. The floating type wind turbine foundation adopting the tank type anti-rolling tank as claimed in claim 1, wherein the height of the communicating tank (6) is the same as the height of the anti-rolling tank (5).

7. The floating type fan foundation adopting the groove-shaped anti-rolling water tank as claimed in claim 1, wherein the foundation structure (3) is formed by axially welding and splicing steel cylinder segments, and the steel cylinder segments are rolled by steel plates.

8. The floating wind turbine foundation using the tank type anti-rolling tank as claimed in claim 1, wherein the connection part of the equal section upright column (31) and the variable section upright column (32) is smoothly transited.

9. The floating wind turbine foundation with the tank-type anti-rolling water tanks as claimed in claim 1, wherein the mooring system (4) and the surface of the foundation structure (3) are provided with a corrosion-resistant coating.

10. An upright post floating type wind generating set is characterized by comprising a fan (1), a tower frame (2) and a foundation, wherein the fan (1) is arranged at the top end of the tower frame (2), the tower frame (2) is arranged on the foundation, and the foundation adopts the floating type fan foundation adopting a groove type anti-rolling water tank as claimed in claim 1; the top end face of the foundation structure (3) is not smaller than the diameter of the bottom end face of the tower (2).

Technical Field

The invention belongs to the technical field of design of a floating type foundation for wind power generation, and particularly relates to a floating type fan foundation adopting a groove-shaped anti-rolling water tank and a wind generating set.

Background

With the continuous expansion of the development of wind energy resources, especially the development in deep sea, the research on the floating wind turbine is paid more attention. The common floating foundations include upright column foundations, tension leg foundations, semi-submersible foundations and the like. The coastal water depth is shallow in China, the water depth applicability of the platform and the construction cost of the mooring structure are considered, and the vertical column fan foundation is widely concerned due to the advantages of simple structure, good stability and the like.

As shown in fig. 1, the conventional vertical column floating wind turbine is suitable for deep sea with water depth of 80m, and mainly comprises four parts, namely a wind turbine 1, a tower 2, a foundation structure 3 and a mooring system 4. However, the vertical column floating type wind turbine foundation needs to consider wind load, wave load, hydrodynamic load and mooring load at the same time, so that the requirement on stability is higher, and the required draft is larger. Because the offshore distance in China is within 100km in the sea area, the requirement of the vertical column floating type wind turbine foundation on the water depth can not be met, the requirement of the vertical column floating type wind turbine foundation on the water depth is generally required to be more than 80m, and the research of vast scholars is not carried out. The conventional upright column floating type fan foundation has high requirement on the applicable water depth and is not wide in the current sea-facing area.

In addition, for the vertical column floating type wind turbine foundation structure, since the dynamic characteristics thereof are similar to those of a ship, it can be considered to use the anti-rolling tanks to increase the stability of the foundation structure.

Disadvantages of the anti-roll tank include: only when the anti-rolling water tank reaches a certain volume, the anti-rolling water tank can generate enough rolling restoring moment, and the anti-rolling water tank can play a certain effect; in addition, the self-oscillation frequency of the anti-rolling tank must be higher than that of the floating foundation platform to realize rolling and anti-rolling, otherwise, the anti-rolling tank can even generate an effect of increasing rolling.

In summary, in order to solve the applicable water depth range of the vertical column floating type wind turbine foundation structure and increase the stability of the vertical column floating type foundation, the structure of the conventional vertical column floating type wind turbine foundation needs to be optimized.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a floating type fan foundation adopting a groove-shaped anti-rolling tank and a wind generating set, wherein the anti-rolling tank is arranged, the center of the structure is reduced, and the draught depth is reduced, so that the vertical column floating type fan foundation can be suitable for sea areas with the water depth of more than 50 m.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an adopt showy formula fan foundation of cell type anti-rolling tank, including mooring system, foundation structure and the anchor basis of setting in the seabed, mooring system fixes foundation structure on the anchor basis in seabed, foundation structure includes equal cross-section upright post and variable cross-section upright post, equal cross-section upright post lower extreme is connected variable cross-section upright post upper end, the cross-section from the top down of variable cross-section upright post is crescent, the lower part of variable cross-section upright post sets up anti-rolling tank, anti-rolling tank divide into a plurality of subdivision along circumference, communicate through the intercommunication groove between the subdivision, anti-rolling tank is provided with at least one deck.

And a water level monitoring sensor is arranged in the anti-rolling tank.

The anti-rolling tank is provided with three layers, and each layer of anti-rolling tank is independent.

The anti-rolling tank is divided into 4, 6 or 8 sub-tanks.

The anti-rolling water tank comprises an outer cylinder and an inner cylinder, an annular space is formed between the inner cylinder and the outer cylinder, a partition plate is arranged in the annular space to divide the annular space into a plurality of sub-tanks in equal parts, a communicating groove communicated with the sub-tanks is arranged in the inner cylinder, and the number of the communicating groove is half of the number of the sub-tanks.

The height of the communicating groove is the same as that of the anti-rolling water tank.

The foundation structure is formed by welding and splicing steel cylinder segments along the axial direction, and the steel cylinder segments are rolled by steel plates.

The connection part of the upright post with the uniform cross section and the upright post with the variable cross section is in smooth transition.

The surfaces of the mooring system and the foundation structure are provided with corrosion-resistant coatings.

A vertical column floating type wind generating set comprises a fan, a tower and a foundation, wherein the fan is arranged at the top end of the tower, the tower is arranged on the foundation, and the foundation adopts the floating type fan foundation adopting a groove type anti-rolling water tank; the top end face of the foundation structure is not smaller than the diameter of the bottom end face of the tower.

Compared with the prior art, the invention has at least the following beneficial effects:

the upper structure of the foundation structure is smaller, the lower structure is thicker and is used for lowering the center of the whole structure, the integral gravity center of the structure can be moved downwards, the damping coefficient is increased, the natural frequency is reduced, the range of the wave frequency of the groove-shaped anti-rolling water tank is wide, and the stability of a foundation platform is increased; and the draught depth is reduced, so that the application range of the foundation platform structure is expanded.

Drawings

The above and other features and advantages of the present invention will become more apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a conventional upright column floating fan system.

Fig. 2 is a schematic diagram of an upright column floating wind turbine generator system according to the present invention.

Fig. 3 shows a floating type fan upright column foundation structure of a tank type anti-rolling tank which can be implemented in the invention.

Fig. 4 is a schematic structural diagram of a tank-type anti-rolling tank which can be implemented by the invention.

FIG. 5a is a schematic front view of a tank-type anti-rolling tank in accordance with the present invention.

FIG. 5b is a schematic top view of a tank-type anti-roll tank of the present invention.

In the attached drawings, 1-a fan, 2-a tower, 3-a foundation structure, 4-a mooring system, 5-a communication groove, 6-a communication groove, 31-an equal-section upright column and 32-a variable-section upright column.

Detailed Description

The present invention is described in detail below with reference to the attached drawing figures, in which exemplary embodiments of the invention are shown.

Referring to fig. 1 and 2, the floating type fan foundation adopting the groove-shaped anti-rolling water tanks comprises a mooring system 4, a foundation structure 3 and an anchoring foundation arranged on the seabed, wherein the mooring system 4 fixes the foundation structure 3 on the anchoring foundation on the seabed, the foundation structure 3 comprises uniform-section upright columns 31 and variable-section upright columns 32, the lower ends of the uniform-section upright columns 31 are connected with the upper ends of the variable-section upright columns 32, the sections of the variable-section upright columns 32 are gradually increased from top to bottom, anti-rolling water tanks 5 are arranged on the lower portions of the variable-section upright columns 32, the anti-rolling water tanks 5 are circumferentially divided into a plurality of sub-tanks, and the sub-tanks are communicated with each other through communication grooves 6.

The anti-rolling tank 5 is provided with at least one layer; when the anti-rolling tank 5 is provided with a plurality of layers, the anti-rolling tanks 5 on each layer are independent.

The anti-rolling tank 5 is divided into 4, 6 or 8 sub-tanks.

Preferably, the anti-rolling tank 5 is provided with three layers, and the height of the through groove 6 is the same as that of the anti-rolling tank 5.

The anti-rolling water tank 5 comprises an outer cylinder and an inner cylinder, an annular space is formed between the inner cylinder and the outer cylinder, a partition plate is arranged in the annular space to divide the annular space into a plurality of sub-tanks in equal parts, a communicating groove 6 communicated with the sub-tanks is arranged in the inner cylinder, and the number of the communicating grooves is half of the number of the sub-tanks.

The foundation structure 3 is formed by welding and splicing steel cylinder segments along the axial direction, and the steel cylinder segments are rolled by steel plates.

The connection part of the uniform-section upright post 31 and the variable-section upright post 32 is in smooth transition; the mooring system 4 and the base structure 3 are provided with corrosion-resistant coatings on their surfaces.

As an embodiment of the invention, an upright post floating type wind generating set comprises a fan 1, a tower frame 2 and a foundation, wherein the fan 1 is arranged at the top end of the tower frame 2, the tower frame 2 is arranged on the foundation, and the foundation adopts the floating type fan foundation adopting a groove type anti-rolling water tank; the top end face of the foundation structure 3 is not smaller than the diameter of the bottom end face of the tower 2.

The invention provides an upright post floating type fan foundation adopting a groove type anti-rolling tank, which is used for applying an upright post floating type foundation structure to a sea area with the water depth of only more than 50m, as shown in figure 2, and has the characteristics that a fan 1 and a tower frame 2 are installed in the sea area of deep sea, the fan 1 is installed at the top of the tower frame 2, and a foundation structure 3 is fixed on a pile foundation on the sea bottom through a mooring system 4.

Referring to fig. 3, compared to the prior art, the present invention includes: the conventional equal-section upright column structure is divided into two parts, namely an equal-section upright column 31 and a variable-section upright column 32.

As shown in fig. 2 and 3, in the foundation structure 3 of the vertical column floating type wind turbine foundation adopting the trough type anti-rolling tank, the upper cross section AA ' and the lower cross section BB ' of the vertical column 31 with the uniform cross section are equal, the upper cross section BB ' of the vertical column 32 with the variable cross section is equal to the lower cross section of the vertical column 31 with the uniform cross section, and the lower cross section CC ' is obviously larger than the upper cross section BB ', and the whole is in a horn shape with a downward opening.

According to the vertical column floating type fan foundation adopting the groove type anti-rolling water tanks, the anti-rolling water tanks 5 of a plurality of sub-tanks are arranged at the bottom of a foundation structure 3 and are connected through the communicating grooves 6, and the communicating grooves 6 are connected with the opposite sub-tanks, so that the anti-rolling water tanks can be effective when the fan is shaken in different directions.

After the geometric dimension of the anti-rolling tank is determined, the anti-rolling effect of the anti-rolling tank is mainly determined by the arrangement of the vertical position, the side tank liquid level height and the selection of the damping coefficient. Therefore, when designing a specific project, the number of the stabilizer tanks to be installed and the width a of the communication groove 6₄And the water surface height is designed according to the requirements of site environmental conditions, the model size of a fan, the size of a basic platform, ballast weight, stability indexes of the basic platform and the like of specific projects.

Fig. 2 is a vertical column floating type fan system provided by the present invention, which comprises: the wind turbine 1 and the tower 2 are installed in a deep sea area, and the foundation structure 3 is fixed on a pile foundation on the sea floor through a mooring system 4.

Fig. 3 is a vertical column floating type fan foundation adopting a groove type anti-rolling tank, and a traditional equal-section vertical column structure is divided into two parts, wherein an equal-section vertical column 31 and a variable-section vertical column 32 are provided, an upper section AA ' and a lower section BB ' of the equal-section vertical column 31 are equal, an upper section BB ' of the variable-section vertical column 32 is equal to a lower section of the equal-section vertical column 31, and the lower section CC ' is obviously larger than the upper section BB ', and the whole body is in a horn shape with a downward opening.

Fig. 4, fig. 5a and fig. 5b show a tank-type anti-roll tank structure diagram, a front view and a top view respectively, and the size of the foundation structure 3 is as follows: OO ═ 50m, OO ═ 20m, O ' O ═ 30m, D ═ 30m, D ═ 6m, BC and B ' C ' are connected through a straight line, AB is connected with BC, A ' B ' and B ' C ' through chamfering, the chamfering radius is 5m, AA ═ BB ═ 7m, CC ═ 50m, 3 layers of the stabilization tanks are arranged, the height h of the stabilization tanks is 4m, and a is 0.8 m.

The height of the equal-section upright column 31 is equal to the diameter of the bottom surface of the variable-section upright column 32.

The foundation structure 3 is rolled into a cylinder by a steel plate with the height of 2.0m-3.0m, and is connected into a vertical column floating foundation by girth welding.

The upper section AA ' of foundation structure 3 is the same or slightly larger diameter than the bottom of tower 2, and the lower section CC ' of foundation structure 3 is significantly larger in diameter than upper section AA '. The cross-sectional diameter of ABC increases.

The foundation structure 3 is connected to the seabed anchoring foundation by means of a mooring structure 4, preventing its movement.