CN216157820U

CN216157820U - Gravity type foundation for offshore wind power

Info

Publication number: CN216157820U
Application number: CN202122255414.7U
Authority: CN
Inventors: 邱旭; 郭雨桐; 吕晓静; 刘艳贵; 胡雪琛; 苏人奇; 白剑
Original assignee: Huaneng Clean Energy Research Institute; Clean Energy Branch of Huaneng Zhejiang Energy Development Co Ltd
Current assignee: Huaneng Clean Energy Research Institute; Clean Energy Branch of Huaneng Zhejiang Energy Development Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-04-01
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses an offshore wind power gravity type foundation which comprises a gravity foundation, an upright post and a fan, wherein the gravity foundation defines a pressure loading bin with an upward opening, the pressure loading bin is used for accommodating ballast, the peripheral outline of the cross section of the gravity foundation is oval, the bottom of the upright post is connected with the gravity foundation, the fan is arranged at the top end of the upright post, the fan comprises an impeller, and the extending direction of the rotating center line of the impeller is the same as the extending direction of the long axis of the oval. The gravity type foundation for offshore wind power generation has the advantages of simple structure, stable suction cylinder, long service life and the like.

Description

Gravity type foundation for offshore wind power

Technical Field

The utility model relates to the technical field of offshore wind power, in particular to a gravity type foundation of offshore wind power.

Background

Wind energy is increasingly regarded by human beings as a clean, economical and harmless renewable energy source. Compared with land wind energy, offshore wind energy resources not only have higher wind speed, but also are far away from a coastline, are not influenced by a noise limit value, and allow the unit to be manufactured in a larger scale.

The offshore wind power foundation is a key place for supporting the whole offshore wind power machine, the cost accounts for 20-25% of the investment of the whole offshore wind power, the offshore wind power foundation generally requires the service life of more than 20 years, but because a fan of the offshore wind power foundation needs to bear the wind force in the main wind direction, the force received by the fan is downwards transmitted to the pile foundation, the wind force borne by the pile foundation is much larger than the force of water flow waves, so that the problems that the pile foundation is unstable, the pile foundation inclines and is even knocked down are easily caused, and the service life of the offshore wind power foundation is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides the offshore wind power gravity type foundation which is stable in structure, strong in wind resistance and low in cost.

The offshore wind power gravity type foundation according to the embodiment of the utility model comprises: the gravity base defines a pressure carrying bin with an upward opening, the pressure carrying bin is used for containing ballast, and the peripheral outline of the cross section of the gravity base is oval; the upright column is connected with the gravity foundation; the fan, the fan install in the stand, the fan includes the impeller, the direction of extension of the rotatory central line of impeller with the direction of extension of oval-shaped major axis is the same.

According to the gravity type foundation of the offshore wind power, the stability of the gravity type foundation of the offshore wind power is improved through the arrangement of the gravity foundation, the gravity type foundation of the offshore wind power is prevented from being inclined or being washed down due to the influence of the sea wind, and the service life of the gravity type foundation of the offshore wind power is prolonged.

In some embodiments, the gravity base comprises an elliptical cylinder and a bottom plate, the central axis of the elliptical cylinder extends in the vertical direction, the bottom plate is connected with the bottom of the elliptical cylinder, and the elliptical cylinder and the bottom plate define the pressure loading bin.

In some embodiments, the gravity base further comprises a plurality of vertically arranged bin dividing plates, and the bin dividing plates are arranged in the pressure loading bin so as to divide the pressure loading bin into a plurality of sub-bins.

In some embodiments, the bottom of the upright is connected to the top of the bottom plate, the bin distribution plate is disposed between the upright and the elliptical cylinder in the radial direction of the upright and connected to each of the upright and the elliptical cylinder, the bin distribution plates are disposed at intervals in the circumferential direction of the upright, and the bin distribution plates extend from the upright to the elliptical cylinder in the radial direction of the upright.

In some embodiments, the outer circumferential profile of the cross section of the pillar is elliptical, and a major axis of the outer circumferential profile of the cross section of the pillar extends in the same direction as a rotational center line of the impeller.

In some embodiments, the central axis of the upright is collinear with the central axis of the gravity base.

In some embodiments, the ratio of the length of the major axis to the length of the minor axis of the ellipse is greater than 1 and equal to or less than 5.

In some embodiments, the major axis of the ellipse is 20m-120m in length.

In some embodiments, the length of the minor axis of the ellipse is 4m-100 m.

In some embodiments, the offshore wind power gravity type foundation further comprises a bearing platform and a tower drum, the bearing platform is located above the upright column and connected with the top end of the upright column, the tower drum is located above the bearing platform and connected with the top end of the bearing platform, and the wind turbine is mounted on the tower drum

Drawings

Fig. 1 is a schematic structural diagram of an offshore wind power gravity foundation according to an embodiment of the utility model.

Fig. 2 is a front view of an offshore wind power gravity foundation according to an embodiment of the utility model.

Fig. 3 is a top view of an offshore wind power gravity foundation according to an embodiment of the utility model.

FIG. 4 is a top view of a gravity base of an offshore wind power gravity foundation according to an embodiment of the present invention.

Reference numerals:

marine wind power gravity foundation 100;

a gravity base 1; an elliptical cylinder 11; a base plate 12; a bin dividing plate 13; a pressure-carrying chamber 14; a sub-bin 141; a column 2; a bearing platform 3; a tower 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

An offshore wind power gravity foundation 100 according to an embodiment of the utility model is described below with reference to the accompanying drawings.

As shown in fig. 1-4, an offshore wind power gravity foundation 100 according to an embodiment of the utility model comprises a gravity foundation 1, a column 2 and a wind turbine (not shown in the figures).

The gravity base 1 defines a pressure-carrying chamber 14 with an upward opening, the pressure-carrying chamber 14 is used for containing ballast, and the outer periphery of the cross section of the gravity base 1 is oval. Specifically, as shown in fig. 1 to 4, the gravity base 1 has a ballast tank 14 opened upward, the gravity base 1 is set on the sea bed by ballast, and the outer peripheral surface of the gravity base 1 is elliptical.

The bottom of the upright post 2 is connected with the gravity base 1. Specifically, as shown in fig. 1-2, a column 2 is provided at the upper end of the gravity base 1.

The fan is arranged at the top end of the upright post 2 and comprises an impeller, and the extension direction of the rotation center line of the impeller is the same as the extension direction of the long axis of the ellipse. Specifically, the extending direction of the rotation center line of the impeller is defined as a main wind direction, and the major axis of the elliptical gravity base 1 extends in the wind direction of the main wind direction.

According to the offshore wind power gravity type foundation 100 provided by the embodiment of the utility model, the peripheral outline of the cross section of the gravity foundation 1 is oval, and the oval cross section has an eccentric line shape, so that the impact action of fluid on the surface of the gravity foundation can be more effectively reduced than that of a common round cross section, the oval gravity foundation 1 has stronger stability, the impact force of stronger sea wind can be borne, the gravity foundation 1 is prevented from inclining or falling under the impact force of the sea wind, and the service life of the offshore wind power gravity type foundation 100 is prolonged.

According to the offshore wind power gravity type foundation 100 provided by the embodiment of the utility model, the extending direction of the rotation center line of the impeller is the same as the extending direction of the long axis of the ellipse, so that the long axis of the ellipse is consistent with the main wind direction, the impact of the main wind direction on the gravity foundation 1 can be reduced, and the stability of the gravity foundation 1 is ensured.

In some embodiments, the gravity base 1 includes an elliptical cylinder 11 and a bottom plate 12, a central axis of the elliptical cylinder 11 extends in a vertical direction, the bottom plate 12 is connected to a bottom of the elliptical cylinder 11, and the elliptical cylinder 11 and the bottom plate 12 define a pressure loading bin 14. Specifically, as shown in fig. 1 to 4, the bottom plate 12 is disposed at the lower end of the elliptical cylinder 11, the inner circumferential surface of the bottom plate 12 and the bottom plate 12 define a pressure loading bin 14, and the central axis of the elliptical cylinder 11 extends in the up-down direction, so that the gravity base 1 is not prone to tilt when sinking in the sea plane, and the installation efficiency of the gravity base 1 is improved.

In some embodiments, the gravity base 1 further includes a plurality of vertically disposed bin dividing plates 13, and the bin dividing plates 13 are disposed in the pressure loading bin 14 so as to divide the pressure loading bin 14 into a plurality of sub-bins 141. Specifically, as shown in fig. 1 to 4, a plurality of the sub-chamber plates 13 are provided at intervals along the inner circumferential surface of the elliptical cylinder 11 to divide the pressure loading chamber 14 into a plurality of sub-chambers 141, so that ballast can be placed in the sub-chambers 141 according to actual conditions, further preventing the gravity base 1 from being inclined.

In some embodiments, the bottom of the column 2 is connected to the top end of the bottom plate 12, the bin dividing plate 13 is disposed between the column 2 and the elliptical cylinder 11 in the radial direction of the column 2 and connected to each of the column 2 and the elliptical cylinder 11, a plurality of bin dividing plates 13 are disposed at intervals along the circumferential direction of the column 2, and the bin dividing plates 13 extend from the column 2 to the elliptical cylinder 11 in the radial direction of the column 2 (in the inward and outward directions, as shown in fig. 1). Specifically, as shown in fig. 1 to 4, the lower end of the upright column 2 penetrates through the elliptical cylinder 11 and is connected with the ground, the inner side of the bin dividing plate 13 is connected with the outer peripheral surface of the upright column 2, the outer side of the bin dividing plate 13 is connected with the inner peripheral surface of the elliptical cylinder 11, and the pressure loading bin 14 is divided into a plurality of mutually independent sub-bins 141 by the bin dividing plate, so that the arrangement of the bin dividing plate 13 is more reasonable.

In some embodiments, the peripheral outline of the cross section of the column 2 is elliptical, and the long axis of the peripheral outline of the cross section of the column 2 extends in the same direction as the rotation center line of the impeller. As shown in fig. 1-2, the outer circumference of the upright post 2 is elliptical (not shown), and the major axis of the elliptical upright post 2 extends along the wind direction of the main wind direction, so that the upright post 2 has the capability of resisting sea wind impact.

In some embodiments, the central axis of the upright 2 is collinear with the central axis of the gravity base 1. Specifically, as shown in fig. 1 to 4, the central axis of the upright 2 coincides with the central axis of the gravity base 1 in the vertical direction, so that the upright 2 is located at the center of the gravity base 1, the gravity base 1 is prevented from being inclined when being installed at sea level, and the installation efficiency of the gravity base 1 is improved.

In some embodiments, the ratio of the length of the major axis of the ellipse to the length of the minor axis is greater than 1 and less than or equal to 5.

In some embodiments, the length of the major axis of the ellipse is 20m-120m, and in particular, the length of the major axis of the ellipse can be selected from: 10m, 20m, 30m, 40m, 50m, 60m, 70m, 80m, 90m, 100m, 110m, 120 m.

In some embodiments, the length of the minor axis of the ellipse is 4m-100m, and the length of the minor axis of the ellipse can be selected from any one of 4m, 10m, 20m, 30m, 40m, 50m, 60m, 70m, 80m, 90m and 100 m.

In some embodiments, offshore wind power gravity foundation 100 further includes a bearing platform 3 and a tower 4, wherein bearing platform 3 is located above upright 2 and connected to the top end of upright 2, tower 4 is located above bearing platform 3 and connected to the top end of bearing platform 3, and the wind turbine is installed on tower 4. Specifically, as shown in fig. 1-2, the bearing platform 3 is arranged above the upright post 2, the tower drum 4 is arranged above the bearing platform 3, and the central axis of the bearing platform 3, the central axis of the tower drum 4 and the central axis of the upright post 2 are overlapped, so that the marine wind power gravity type foundation 100 is more reasonably arranged.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An offshore wind gravity foundation, comprising:

the gravity base defines a pressure carrying bin with an upward opening, the pressure carrying bin is used for containing ballast, and the peripheral outline of the cross section of the gravity base is oval;

the upright column is connected with the gravity foundation;

the fan, the fan install in the stand, the fan includes the impeller, the direction of extension of the rotatory central line of impeller with the direction of extension of oval-shaped major axis is the same.

2. The offshore wind power gravity foundation of claim 1, wherein the gravity foundation comprises an elliptical cylinder and a bottom plate, a central axis of the elliptical cylinder extends in a vertical direction, the bottom plate is connected with the bottom of the elliptical cylinder, and the elliptical cylinder and the bottom plate define the pressure loading bin.

3. The offshore wind power gravity foundation of claim 2, further comprising a plurality of vertically arranged bin distribution plates arranged in the pressure-carrying bin so as to divide the pressure-carrying bin into a plurality of sub-bins.

4. The offshore wind power gravity foundation of claim 3, wherein the bottom of the upright is connected to the top end of the bottom plate, the bin distribution plates are arranged between the upright and the elliptical cylinder in the radial direction of the upright and connected to each of the upright and the elliptical cylinder, the bin distribution plates are arranged at intervals in the circumferential direction of the upright, and the bin distribution plates extend from the upright to the elliptical cylinder in the radial direction of the upright.

5. An offshore wind power gravity foundation according to claim 1 wherein the cross section of the upright has an elliptical peripheral profile with the major axis extending in the same direction as the rotation centerline of the impeller.

6. An offshore wind powered gravity foundation according to any of claims 1-5 wherein the centre axis of the upright is collinear with the centre axis of the gravity foundation.

7. An offshore wind gravity foundation according to claim 1 wherein the ratio of the length of the major axis to the length of the minor axis of the ellipse is greater than 1 and equal to or less than 5.

8. An offshore wind gravity foundation according to claim 1 or 7 wherein the major axis of the ellipse is between 20m and 120m in length.

9. An offshore wind gravity foundation according to claim 1 or 7 wherein the minor axis of the ellipse is between 4m and 100m in length.

10. The offshore wind power gravity foundation of claim 1, further comprising a bearing platform and a tower, wherein the bearing platform is located above the upright column and connected to the top end of the upright column, the tower is located above the bearing platform and connected to the top end of the bearing platform, and the wind turbine is mounted on the tower.