Sand prevention device for onshore wind power foundation

Abstract

The application discloses a sand prevention device for a land wind power foundation, which comprises a base, a support assembly, a sand storage assembly and a sand cleaning assembly. A tower drum is arranged on the base, the tower drum is provided with a hatch, the hatch is higher than the ground, the support assembly is connected with the tower drum, the support assembly is used for forming a channel connecting the hatch and the ground, the sand storage assembly is connected with the base, the sand storage assembly is provided with a sand storage cavity, the sand storage cavity is located below the hatch, the sand storage cavity is used for storing sand flowing towards the tower drum, and at least part of the sand cleaning assembly is arranged in the sand storage cavity. The sand cleaning assembly is used for conveying the sand in the sand storage cavity to outside of the sand storage cavity. The sand storage cavity is reserved, the sand dune is effectively prevented from burying the hatch without lifting the height of the hatch, and the sand stored in the sand storage cavity is timely conveyed out of the sand storage cavity through the sand cleaning assembly. The suspended inclined pedestrian channel is arranged, so that the tower drum can be smoothly entered and exited under bad weather.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a sand-proof device for onshore wind power foundations. Background Technology

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind energy is a clean and pollution-free renewable energy source, which can be divided into two main categories: offshore wind power and onshore wind power. Among them, desert areas have vast areas, little water, low heat capacity (low specific heat), strong temperature variations, sparse vegetation, and low wind resistance. Utilizing deserts and Gobi to develop large-scale wind and solar clean energy bases is an important development target for onshore wind power.

[0003] However, compared with other environments, although desert and Gobi regions are rich in wind and land resources, the construction environment is harsh, facing special meteorological conditions, geological characteristics and sand hazards. Wind turbine units need to be customized to overcome the above unfavorable factors and achieve cost reduction and efficiency improvement in projects.

[0004] For example, in deserts and Gobi, there is a lot of wind and sand, and the shifting sand is severe. In some areas, sand dunes are moving, which can easily bury the wind turbine foundations. It is necessary to increase the distance between the tower nacelle doors to prevent the doors from being buried by wind and sand, and it is also necessary to clear the sand dunes around the wind turbine foundations in a timely manner. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, embodiments of the present invention propose a sand-proof device for onshore wind power foundations, which has a reserved sand storage cavity to prevent the hatch from being buried by wind and sand.

[0007] The sand control device for onshore wind power foundations according to an embodiment of the present invention includes: a base, a support assembly, a sand storage assembly, and a sand cleaning assembly. The base is buried in a sand layer below the ground. A tower is provided on the base. The tower has a hatch that is higher than the ground. The support assembly is connected to the tower and forms a channel connecting the hatch to the ground. The sand storage assembly is connected to the base and has a sand storage chamber located below the hatch. The sand storage chamber is used to store sand flowing towards the tower. At least a portion of the sand cleaning assembly is disposed in the sand storage chamber and is used to transport the sand in the sand storage chamber to the outside of the sand storage chamber.

[0008] The sand-prevention device for onshore wind power foundations in this invention, by reserving a sand storage chamber, effectively prevents sand dunes from burying the chamber door without increasing its height, and promptly removes the sand stored in the chamber through a sand-clearing component. A suspended, inclined pedestrian walkway is provided to ensure easy access to and from the tower during inclement weather.

[0009] Therefore, the sand-proof device for onshore wind power foundations in this embodiment of the invention solves the problem of the cabin door being buried by sand.

[0010] In some embodiments, the support assembly includes an inclined first support plate having a first end and a second end disposed opposite to each other in its length direction. The distance between the first end of the first support plate and the ground is greater than the distance between the second end of the first support plate and the ground. The first end of the first support plate is connected to the tower and located below the hatch. The second end of the first support plate is provided with a support column, at least a portion of which is buried in a layer of sand below the ground.

[0011] In some embodiments, the angle between the second end of the first support plate and the perpendicular line of the tower and the center line extending along the length of the first support plate is greater than or equal to 10° and less than or equal to 35°.

[0012] In some embodiments, the support assembly further includes an annular second support plate, which is disposed around the tower. The upper end face of the second support plate contacts the lower end face of the hatch. The first end of the first support plate is connected to the second support plate, and there are multiple first support plates, which are circumferentially spaced around the second support plate.

[0013] In some embodiments, the sand storage assembly includes an annular support platform surrounding the base, with an annular groove on the upper surface of the support platform serving as the sand storage chamber, and the cross-sectional area of ​​the groove gradually decreasing from top to bottom.

[0014] In some embodiments, the ratio of the vertical distance between the second support plate and the ground to the depth of the groove is (2-3):1.

[0015] In some embodiments, the upper end of the support column is provided with a mounting groove, and the outer end of the support platform rests in the mounting groove.

[0016] In some embodiments, the sand storage assembly further includes a plurality of partition plates disposed within the groove, the plurality of partition plates being spaced apart around the central axis of the support platform, the plurality of partition plates dividing the groove into a plurality of fan-shaped segments.

[0017] In some embodiments, a plurality of the partition plates correspond one-to-one with a plurality of the first support plates, such that the fan ring segment is located between two adjacent first support plates.

[0018] In some embodiments, the sand removal assembly includes a plurality of conveyors, each of which corresponds to a plurality of fan-shaped segments. The conveyors are located within the fan-shaped segments to transport the sand stored within the fan-shaped segments to the outside of the fan-shaped segments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sand-prevention device for onshore wind power foundations according to an embodiment of the present invention.

[0020] Figure 2 This is a top view of a sand-proof device for onshore wind power foundations according to an embodiment of the present invention.

[0021] Figure 3 This is a cross-sectional view of a sand-proof device for onshore wind power foundations according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the sand storage component of a sand control device for onshore wind power foundations according to an embodiment of the present invention.

[0023] Figure 5 This is a cross-sectional view of a portion of the sand storage component of a sand control device for onshore wind power foundations according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the support column of the sand-proof device for onshore wind power foundation according to an embodiment of the present invention.

[0025] Figure label:

[0026] Base 11, Tower 12, Hatch 13

[0027] First support plate 21, support column 22, mounting groove 221, second support plate 23

[0028] Support platform 31, sand storage chamber 311, groove 312, partition plate 32

[0029] Conveyor 41. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following describes, with reference to the accompanying drawings, a sand-proof device for onshore wind power foundations according to an embodiment of the present invention.

[0032] like Figures 1 to 6 As shown, the sand control device for onshore wind power foundations in this embodiment of the invention includes: a base 11, a support assembly, a sand storage assembly, and a sand cleaning assembly.

[0033] It should be understood that the sand control device of the present invention is designed for use on onshore wind power foundations. The base 11 of the wind power foundation is buried in the sand layer below ground level, and the base 11 is truncated cone-shaped. A tower 12 is fixedly welded to the upper end of the base 11, and a hatch 13 is provided on the peripheral wall of the tower 12, with the hatch 13 extending above ground level.

[0034] The support assembly is connected to the tower 12 and forms a passage connecting the hatch 13 to the ground, so that workers can move between the hatch 13 and the ground through the passage.

[0035] The sand storage assembly is connected to the base 11 and has a sand storage chamber 311 located below the hatch 13. The sand storage chamber 311 has an opening facing upwards, allowing sand flowing towards the hatch 13 near the tower 12 to fall into the sand storage chamber 311 through the opening. In other words, when sand dunes moved by wind or quicksand pass over the wind turbine foundation, the sand enters the reserved sand storage chamber 311, thus preventing the hatch 13 from being buried.

[0036] At least part of the sand cleaning component is located inside the sand storage chamber 311. The sand cleaning component is used to transport the sand inside the sand storage chamber 311 to the outside of the sand storage chamber 311, thereby cleaning the sand storage chamber 311 in a timely manner.

[0037] Therefore, the sand-prevention device for onshore wind power foundations in this embodiment of the invention, by reserving a sand storage chamber 311, effectively prevents sand dunes from burying the door 13 without raising its height, and the sand-clearing component promptly transports the sand stored in the sand storage chamber 311 out of the sand storage chamber 311. By setting up a suspended, inclined pedestrian passage, it is ensured that people can smoothly enter and exit the tower 12 in severe weather.

[0038] In some embodiments, such as Figures 1 to 3 As shown, the support assembly includes an inclined first support plate 21. The first support plate 21 has a first end and a second end disposed opposite each other along its length. The distance between the first end of the first support plate 21 and the ground is greater than the distance between the second end of the first support plate 21 and the ground. That is, the first end of the first support plate 21 refers to... Figure 1 The upper end of the first support plate 21, and the second end of the first support plate 21 refer to, as Figure 1 The lower end of the first support plate 21.

[0039] The first end of the first support plate 21 is connected to the tower 12 and located below the hatch 13. The second end of the first support plate 21 is provided with a support column 22. At least part of the support column 22 is buried in the sand layer below the ground to achieve a stable support effect.

[0040] Understandably, the upper surface of the first support plate 21 is used for staff passage, and barriers (not shown in the figure) can be installed around the first support plate 21 to improve pedestrian safety.

[0041] Optionally, the angle between the perpendicular line from the second end of the first support plate 21 and the tower 12 and the center line extending along the length of the first support plate 21 is greater than or equal to 10° and less than or equal to 35°. In other words, the angle between the first support plate 21 and the ground on the side closer to the wind turbine foundation is an acute angle, greater than or equal to 10° and less than or equal to 35°.

[0042] For example, the angle between the first support plate 21 and the ground is 10°, 15°, 20°, 25°, 30°, or 35°. Preferably, the angle between the first support plate 21 and the ground is 20° to facilitate easier passage for workers.

[0043] In some embodiments, such as Figures 1 to 3 As shown, the support assembly also includes an annular second support plate 23. The second support plate 23 is arranged around the tower 12, and the inner peripheral wall of the second support plate 23 is connected to the outer peripheral wall of the tower 12. The upper end face of the second support plate 23 contacts the lower end face of the hatch 13, and the first end of the first support plate 21 is connected to the second support plate 23.

[0044] Furthermore, there are multiple first support plates 21, which are circumferentially distributed around the second support plate 23. Workers can walk from any first support plate 21 to the second support plate 23, and then walk around the tower 12 to the hatch 13, thereby improving convenience.

[0045] In some embodiments, such as Figures 1 to 5 As shown, the sand storage assembly includes an annular support platform 31. The support platform 31 is arranged around the base 11, and the upper surface of the support platform 31 is provided with an annular groove 312, which is the aforementioned sand storage chamber 311. The cross-sectional area of ​​the groove 312 gradually decreases from top to bottom to facilitate the collection of sand to the bottom of the sand storage chamber 311.

[0046] Optionally, the ratio of the vertical distance between the second support plate 23 and the ground to the depth of the groove 312 is (2-3):1, to ensure that the sand stored in the sand storage chamber 311 will not bury the hatch 13.

[0047] In some embodiments, such as Figures 1 to 6 As shown, the upper end of the support column 22 is provided with an installation groove 221, and the outer end of the support platform 31 is placed in the installation groove 221 so that the support column 22 supports the support platform 31, thereby further improving the stability of the support platform 31.

[0048] In some embodiments, such as Figures 1 to 4As shown, the sand storage assembly also includes multiple partition plates 32, which are disposed in the groove 312. The multiple partition plates 32 are distributed at intervals around the central axis of the support platform 31, and the multiple partition plates 32 divide the groove 312 into multiple fan-shaped segments.

[0049] It is understandable that the sand storage chamber 311 is divided into multiple sections by multiple partition plates 32, meaning that each fan-shaped section is used to store sand. The sand is collected by the side walls of the partition plates 32 and the bottom walls of the grooves 312. Furthermore, workers can perform maintenance and sand cleaning operations on the upper surface of the partition plates 32.

[0050] In some embodiments, such as Figures 1 to 4 As shown, multiple partition plates 32 correspond one-to-one with multiple first support plates 21, so that the fan ring segment is located between two adjacent first support plates 21.

[0051] It is understandable that the pedestrian passage constructed by the sand storage chamber 311 and the first support plate 21 is spaced apart in the circumferential direction of the tower 12 to avoid interference between the two and to avoid affecting the passage of staff or the sand discharge operation of the sand storage chamber 311.

[0052] In some embodiments, such as Figures 1 to 4 As shown, the sand clearing assembly includes multiple conveyors 41, each of which corresponds to a multiple fan ring section. The conveyors 41 are located inside the fan ring section to transport the sand stored inside the fan ring section to the outside of the fan ring section.

[0053] Optionally, the conveyor 41 is a belt conveyor. The bottom of the groove 312 is provided with multiple receiving slots, and the multiple receiving slots correspond one-to-one with multiple conveyors 41. The conveyors 41 are installed in the receiving slots and transport the sand in the sand storage chamber 311 to the outside of the sand storage chamber 311 through the belt.

[0054] Furthermore, the depth of the receiving trough gradually decreases in the direction away from the tower 12, so that the end of the conveyor 41 near the tower 12 is roughly level with the bottom of the groove 312, thereby making it easier for the collected sand to be discharged from the sand storage chamber 311 through the conveyor 41.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A sand-proof device for onshore wind power foundations, characterized in that, include: A base, which is buried in a layer of sand below the ground, has a tower on the base, and the tower has a hatch that is above the ground. A support assembly connected to the tower, the support assembly forming a channel connecting the hatch to the ground, the support assembly including a first support plate and a second support plate, the first support plate being inclined, the second support plate being annular, the first support plate having a first end and a second end opposite to each other along its length, the distance between the first end of the first support plate and the ground being greater than the distance between the second end of the first support plate and the ground, the first end of the first support plate being connected to the tower and located below the hatch, the second end of the first support plate having a support column, at least a portion of the support column being buried in a layer of sand below the ground, the angle between the perpendicular line of the second end of the first support plate and the tower and the center line extending along the length of the first support plate being greater than or equal to 10° and less than or equal to 35°, the second support plate being arranged around the tower, the upper end face of the second support plate contacting the lower end face of the hatch, the first end of the first support plate being connected to the second support plate, and there being a plurality of first support plates, the plurality of first support plates being circumferentially spaced around the second support plate; A sand storage assembly is connected to the base and has a sand storage chamber located below the hatch. The sand storage chamber is used to store sand flowing towards the tower. When sand dunes caused by wind or quicksand move and pass over the wind turbine foundation, the sand enters the reserved sand storage chamber, effectively preventing the hatch from being buried by sand dunes without raising its height. The sand storage assembly includes an annular support platform and multiple partition plates. The support platform is arranged around the base, and the upper surface of the support platform has an annular groove, which serves as the sand storage chamber. The cross-sectional area of ​​the groove gradually decreases from top to bottom. The partition plates are disposed in the groove, and multiple partition plates are spaced apart around the central axis of the support platform, dividing the groove into multiple fan-shaped segments. A sand-clearing assembly, at least a portion of which is disposed within the sand storage chamber, is used to transport sand from the sand storage chamber to the outside of the sand storage chamber.

2. The sand-proof device for onshore wind power foundations according to claim 1, characterized in that, The ratio of the vertical distance between the second support plate and the ground to the depth of the groove is (2-3):

1.

3. The sand-proof device for onshore wind power foundations according to claim 1, characterized in that, The upper end of the support column is provided with an installation groove, and the outer end of the support platform is placed in the installation groove.

4. The sand-proof device for onshore wind power foundations according to claim 1, characterized in that, Each of the partition plates corresponds to one of the first support plates, so that the fan ring segment is located between two adjacent first support plates.

5. The sand-proof device for onshore wind power foundations according to claim 4, characterized in that, The sand-clearing component includes multiple conveyors, each of which corresponds to one of the multiple fan-shaped sections. The conveyors are located inside the fan-shaped sections to transport the sand stored inside the fan-shaped sections to the outside of the fan-shaped sections.

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