CN214145768U

CN214145768U - Floating type fan foundation adopting groove type anti-rolling water tank and wind generating set

Info

Publication number: CN214145768U
Application number: CN202023312687.2U
Authority: CN
Inventors: 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; 邵斌田; 顾健威; 韩斯琪
Original assignee: Huaneng Yancheng Dafeng New Energy Power Generation Co ltd; Jiangsu Cleaning Energy Branch Of Huaneng Power Intl Inc; Huaneng Clean Energy Research Institute; Huaneng Offshore Wind Power Science and Technology Research Co Ltd
Current assignee: Huaneng Yancheng Dafeng New Energy Power Generation Co ltd; Jiangsu Cleaning Energy Branch Of Huaneng Power Intl Inc; Huaneng Clean Energy Research Institute; Huaneng Offshore Wind Power Science and Technology Research Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-07
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an adopt showy formula fan foundation and wind generating set in cell type anti-sway tank, the showy formula fan foundation in cell type anti-sway tank includes mooring system, foundation structure and sets up the anchor basis in the seabed, mooring system fixes foundation structure on the anchor basis in the 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 of variable cross-section upright post increases from top to bottom gradually, the lower part of variable cross-section upright post sets up anti-sway tank, anti-sway tank divide into a plurality of cabins along circumference, communicate through the intercommunication groove between the cabins the utility model discloses the showy formula fan foundation in cell type anti-sway tank can make the whole focus of structure move down, increase damping coefficient, reduce the natural frequency, increased the foundation platform stability; and the draught depth is reduced, so that the application range of the foundation platform structure is expanded.

Description

Floating type fan foundation adopting groove type anti-rolling water tank and wind generating set

Technical Field

The utility model belongs to the technical field of wind power generation floats formula basis design, concretely relates to adopt showy formula fan basis and wind generating set in cell type anti-rolling tank.

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.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art, the utility model provides an adopt showy formula fan foundation and wind generating set in cell type anti-rolling tank sets up anti-rolling tank design, reduces the center of structure, reduces the draft to make upright post showy formula fan foundation can be applicable to the sea area that the depth of water is only greater than more than 50 m.

In order to realize the purpose, the utility model discloses a technical scheme is: 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 utility model discloses following beneficial effect has at least:

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, which is to be read in connection with the accompanying drawings, wherein:

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

Fig. 2 is a schematic diagram of an implementable vertical column floating type wind turbine generator system of the present invention.

Fig. 3 shows a floating type fan upright column foundation structure of a tank type anti-rolling tank of the present invention.

Fig. 4 is a schematic structural view of a tank-type anti-rolling tank of the present invention.

Fig. 5a is a schematic front view of a tank type anti-rolling tank of the present invention.

Fig. 5b is a schematic top view of a tank type anti-rolling 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 invention will be described in detail with reference to the drawings, 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 utility model, a vertical column floating type wind generating set comprises a fan 1, a tower 2 and a foundation, wherein the fan 1 is arranged at the top end of the tower 2, the tower 2 is arranged on the foundation, and the foundation adopts the floating type fan foundation adopting the groove type anti-rolling tank of the utility model; 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 utility model provides an adopt cell type anti-rolling tank's upright post floating fan basis for with upright post floating foundation structure be used for the depth of water only be greater than 50 m's sea area, as shown in fig. 2, have such characteristic, deep sea area installation fan 1 and pylon 2, fan 1 installs at the top of pylon 2, fixes foundation structure 3 on the pile foundation in seabed through mooring system 4.

Referring to fig. 3, compared with the prior art, the utility model discloses a: 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 fig. 3, the utility model provides an adopt the foundation structure 3 of the vertical post floating type fan basis of cell type anti-rolling tank, equal cross-section upright post 31's upper cross-section AA' and lower cross-section BB 'all equal, variable cross-section upright post 32's upper cross-section BB 'equals with equal cross-section upright post 31's lower cross-section, lower cross-section CC 'will be obviously greater than upper cross-section BB', wholly be the loudspeaker form that the opening is downward.

The utility model provides an adopt cell type anti-rolling tank's upright post to float formula fan basis, foundation structure 3's bottom has set up the anti-rolling tank 5 of a plurality of subdivision, links to each other through linking groove 6 between the subdivision, and linking groove 6 connects relative subdivision to the realization anti-rolling tank can both be effective when the equidirectional wave.

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 the utility model provides an upright post floats formula fan system, include: 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.

Claims

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. A wind generating set adopting a floating type fan foundation of a groove-shaped anti-rolling tank is characterized by comprising a fan (1), a tower (2) and a foundation, wherein the fan (1) is arranged at the top end of the tower (2), the tower (2) is arranged on the foundation, and the foundation adopts the floating type fan foundation adopting the groove-shaped anti-rolling 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).