Wind power tower bottom structure and wind power tower

Abstract

The utility model provides a kind of wind power tower bottom structure and wind power tower.The wind power tower bottom structure includes tower foundation, tower drum bottom section and outer ladder, tower foundation includes foundation cylinder, at least part of foundation cylinder is located above ground, tower drum bottom section is set above foundation cylinder, and tower drum bottom section is equipped with door hole, and outer ladder is set on foundation cylinder and tower drum bottom section outside, and located between ground and door hole.The wind power tower bottom structure provided by the utility model, by at least part of foundation cylinder is set above ground, and door hole is set in the tower drum bottom section above foundation cylinder, the spacing between door hole and ground can be increased, the position of door hole can be lifted to a relatively high position relative to ground, so that water can be prevented from entering or being flooded into door hole when natural disasters such as floods occur, thereby preventing the engineering structure and equipment in the wind power tower from being damaged and the wind power tower itself from being eroded, and personnel can easily enter and exit the door hole by setting the outer ladder between the ground and the door hole.

Description

Technical Field

[0001] This utility model relates to the field of wind power, specifically to a bottom structure of a wind turbine tower and a wind turbine tower. Background Technology

[0002] A wind turbine tower consists of a foundation and a tower body. The bottom of the tower body connects to the foundation, which supports the tower body. The top of the tower body connects to the wind turbine. Wind turbine towers have doorways for personnel to enter and perform maintenance and other operations. However, in some technologies, these doorways are located low, making them vulnerable to flooding during natural disasters. Water from outside can easily enter the tower through these doorways, damaging the internal structure and equipment, corroding the tower itself, and even causing the doorways to be submerged, preventing personnel from entering or leaving the tower. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, this utility model provides a wind turbine tower bottom structure and a wind turbine tower using the wind turbine tower bottom structure.

[0005] The wind turbine tower bottom structure provided by this utility model includes:

[0006] The tower foundation comprises a base cylinder, at least a portion of which is located above the ground. The base cylinder is situated above the base cylinder and has a doorway. The external ladder is located outside the base cylinder and the base cylinder, and is situated between the ground and the doorway.

[0007] The wind turbine tower bottom structure provided by this utility model increases the distance between the doorway and the ground by placing at least part of the foundation cylinder above the ground and setting the doorway at the bottom section of the tower cylinder above the foundation cylinder. This allows the doorway to be raised to a higher position relative to the ground, thus preventing water from entering or being submerged in the doorway during natural disasters such as floods. This also prevents damage to the engineering structure and equipment inside the wind turbine tower and corrosion of the wind turbine tower itself. At the same time, by setting an external ladder between the ground and the doorway, it is convenient for personnel to enter and exit the doorway.

[0008] Optionally, the bottom structure of the wind turbine tower further includes a first platform, which is located in the internal space of the bottom section of the tower and is corresponding to the door opening. The first platform is used to place electrical equipment.

[0009] Optionally, the bottom structure of the wind turbine tower further includes a second platform and an inner ladder. The second platform is located in the internal space of the foundation cylinder and below the first platform. The inner ladder is located at least between the first platform and the second platform.

[0010] Optionally, the first platform is provided with a pedestrian passage, and the inner elevator is provided corresponding to the pedestrian passage.

[0011] Optionally, the inner ladder is provided with a support member, and the inner ladder is connected to the base cylinder through the support member.

[0012] Optionally, the top of the foundation cylinder is provided with an anchoring boss, which protrudes into the inner space of the foundation cylinder relative to the inner peripheral wall of the foundation cylinder. The bottom section of the tower cylinder is anchored to the anchoring boss, and the second platform is located below the anchoring boss.

[0013] Optionally, the anchoring boss extends in a ring shape along the inner peripheral wall of the foundation cylinder, and the second platform is correspondingly arranged in a ring shape with the anchoring boss;

[0014] Alternatively, there may be multiple anchoring bosses, which are spaced apart along the inner circumferential wall of the foundation cylinder, and the second platform is arranged in a ring corresponding to the multiple anchoring bosses in the circumferential direction.

[0015] Optionally, the tower foundation further includes a base plate located below the foundation cylinder for supporting the foundation cylinder. The base plate is annular, and the space inside the annular base plate communicates with the space inside the foundation cylinder. The inner ladder extends into the space inside the annular base plate.

[0016] Optionally, the tower foundation further includes a cushion layer disposed below the base plate, and the inner ladder extends to the cushion layer.

[0017] The wind turbine tower provided by this utility model includes:

[0018] The tower body and the bottom structure of the wind turbine tower described in this utility model, wherein the tower body is located above the bottom section of the tower.

[0019] The wind turbine tower provided by this utility model, by adopting the bottom structure of the wind turbine tower provided by this utility model, can increase the distance between the doorway and the ground, so that the position of the doorway can be raised to a higher position relative to the ground. In the event of natural disasters such as floods, the doorway can be prevented from being flooded or submerged. This can prevent damage to the engineering structure and equipment inside the wind turbine tower, corrosion of the wind turbine tower itself, and facilitate personnel to enter and exit the doorway. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the main sectional view of the bottom structure of the wind turbine tower according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional sectional view of the bottom structure of the wind turbine tower according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of the anchorage at the bottom of the wind turbine tower according to an embodiment of this utility model.

[0023] Figure label:

[0024] 1. Base slab; 11. Precast slab section; 111. Precast slab; 12. Post-cast slab section; 121. Post-cast strip; 122. Post-cast slab; 13. Inner ring space; 2. Outer ladder; 3. Foundation cylinder; 31. Anchoring boss; 32. Anchor hole; 4. Side support; 5. Anchor; 6. Tower bottom section; 61. Doorway; 7. Inner ladder; 71. Support; 8. Backfill soil layer; 9. First platform; 10. Second platform; 101. Subbase. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown 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.

[0026] The following is for reference. Figures 1-3 This invention describes the bottom structure of a wind turbine tower and the wind turbine tower provided in the embodiments of the present invention.

[0027] like Figures 1-3 As shown, the bottom structure of the wind turbine tower provided in this embodiment includes a tower foundation, a tower bottom section 6, and an outer ladder 2.

[0028] The tower foundation includes a foundation cylinder 3, at least a portion of which is located above the ground. The tower base section 6 is located above the foundation cylinder 3 and has a doorway 61. An external ladder 2 is located outside the foundation cylinder 3 and the tower base section 6, between the ground and the doorway 61.

[0029] like Figure 1 and Figure 2As shown, optionally, both the foundation cylinder 3 and the tower bottom section 6 can be hollow cylinders, and their axial directions can both be parallel to the vertical direction. The entirety or upper portion of the foundation cylinder 3 along its axial direction can be located above the ground. The tower bottom section 6 can be stacked on top of the foundation cylinder 3, and the internal space of the tower bottom section 6 and the internal space of the foundation cylinder 3 can be arranged sequentially from top to bottom and connected. A doorway 61 can penetrate the wall of the tower bottom section 6, allowing the internal space of the tower bottom section 6 to connect with the external space of the tower bottom section 6. The external ladder 2 is located outside the foundation cylinder 3 and the tower bottom section 6, between the ground and the doorway 61, allowing personnel to easily enter and exit the doorway 61.

[0030] The wind turbine tower bottom structure provided by this utility model increases the distance between the doorway 61 and the ground by placing at least a portion of the foundation cylinder 3 above the ground and setting the doorway 61 at the bottom section 6 of the tower cylinder above the foundation cylinder 3. This allows the doorway 61 to be raised to a higher position relative to the ground, thus preventing water from entering or flooding the doorway 61 in the event of natural disasters such as floods. This also prevents damage to the engineering structure and equipment inside the wind turbine tower and corrosion of the wind turbine tower itself. At the same time, by setting an external ladder 2 between the ground and the doorway 61, it is convenient for personnel to enter and exit the doorway 61.

[0031] In practical applications, external elevator 2 can include at least one of stairs and elevators, and can be designed according to actual needs. The following section describes external elevator 2 as stairs. Figure 1 and Figure 2 As shown, optionally, the outer ladder 2 can extend vertically and bend. The outer ladder 2 can be connected to the ground and / or the outer peripheral wall of the tower base section 6 for fixed support via the ground and / or the tower base section 6; alternatively, the outer ladder 2 can be supported on the ground without being connected to the ground, for support via the ground. The outer ladder 2 can be connected to the outer peripheral wall of the tower base section 6 through its top and / or other locations, and can be connected to and / or supported on the ground through its bottom and / or other locations. The top of the outer ladder 2 can be positioned opposite the bottom of the doorway 61, and can contact the outer peripheral wall of the tower base section 6 or have a gap with the outer peripheral wall of the tower base section 6 in the radial direction of the tower base section 6.

[0032] In practical applications, the outer ladder 2 is not limited to extending and bending in the vertical direction. For example, the outer ladder 2 can be set on the outer peripheral wall of the tower bottom section 6 and extend in a straight line in the vertical direction. In other words, the outer ladder 2 can be set on the outer peripheral wall of the tower bottom section 6 and extend along the axial direction of the tower bottom section 6.

[0033] In one embodiment of the present invention, the bottom structure of the wind turbine tower may further include a first platform 9. The first platform 9 may be located in the internal space of the bottom section 6 of the tower and is correspondingly arranged with the doorway 61. The first platform 9 is used to place electrical equipment.

[0034] like Figure 1 and Figure 2 As shown, optionally, the first platform 9 can be horizontally positioned. The first platform 9 can be connected to the inner circumferential wall of the tower base section 6 via connectors such as bolts, or the first platform 9 can be supported on multiple first brackets on the inner circumferential wall of the tower base section 6, the multiple first brackets being arranged at intervals along the circumference of the tower base section 6 (e.g., ...). Figure 2 (As shown).

[0035] The first platform 9 can be correspondingly set with the doorway 61. Optionally, the first platform 9 can have a stepping surface for personnel to walk on. The stepping surface can be flush with the bottom end of the doorway 61 so that personnel can move between the first platform 9 and the doorway 61. The first platform 9 is used to place electrical equipment so that the electrical equipment is at a higher position relative to the ground to avoid damage. The surface of the first platform 9 used to place the electrical equipment is a bearing surface. The bearing surface and the stepping surface can be on the same plane or on different planes (for example, the bearing surface and the stepping surface can be planes located at different positions in the circumferential, radial and / or circumferential directions of the bottom section 6 of the tower).

[0036] In practical applications, personnel can perform installation, maintenance, and control operations on electrical equipment on the first platform 9, and can also perform installation and maintenance operations on the bottom section 6 of the tower on the first platform 9.

[0037] In practical applications, the height of the first platform 9 in the space inside the bottom section 6 of the tower can be adjusted according to actual needs. For example, the stepping surface of the first platform 9 can be higher or lower than the bottom of the doorway 61. In this case, the doorway 61 and the stepping surface of the first platform 9 can be connected, for example, by additional steps that are connected to the doorway 61 and the first platform 9 respectively.

[0038] In one embodiment of the present invention, the bottom structure of the wind turbine tower may further include a second platform 10 and an inner ladder 7. The second platform 10 may be located in the internal space of the foundation cylinder 3 and below the first platform 9. The inner ladder 7 may be located at least between the first platform 9 and the second platform 10.

[0039] like Figure 1 and Figure 2 As shown, optionally, the second platform 10 can be horizontally positioned. The second platform 10 can be connected to the inner circumferential wall of the foundation cylinder 3 via connectors such as bolts, or the second platform 10 can be supported on multiple second brackets on the inner circumferential wall of the foundation cylinder 3, with the multiple second brackets arranged at intervals along the circumference of the foundation cylinder 3 (e.g., ...). Figure 2(As shown). The second platform 10 is located below the first platform 9.

[0040] The inner ladder 7 can be located at least between the first platform 9 and the second platform 10. Optionally, the inner ladder 7 can be located entirely between the first platform 9 and the second platform 10. Alternatively, the top end of the inner ladder 7 can pass through the first platform 9 and extend above the first platform 9, and the bottom end of the inner ladder 7 can pass through the second platform 10 and extend below the second platform 10. Optionally, the top end of the inner ladder 7 extends above the first platform 9, and the bottom end of the inner ladder 7 extends below the second platform 10. The portion between the top end and the bottom end of the inner ladder 7 is located between the first platform 9 and the second platform 10 to facilitate the movement of personnel between the first platform 9 and the second platform 10.

[0041] In practical applications, personnel on the second platform 10 can perform operations such as installation and maintenance on the basic cylinder 3.

[0042] In one embodiment of this utility model, the first platform 9 may be provided with a passageway, and the inner ladder 7 and the passageway may be provided accordingly.

[0043] like Figure 1 and Figure 2 As shown, optionally, the first platform 9 is provided with a vertical passageway, which may be, but is not limited to, a manhole. The inner ladder 7 and the passageway can be provided correspondingly. Optionally, the inner ladder 7 can be provided vertically and pass through the manhole that serves as the passageway, so that people can move between the first platform 9 and the inner ladder 7.

[0044] In one embodiment of this utility model, the inner ladder 7 may be provided with a support member 71, and the inner ladder 7 can be connected to the base cylinder 3 through the support member 71.

[0045] like Figure 2 As shown, optionally, the inner ladder 7 may be provided with a plurality of support members 71 arranged at intervals along the vertical direction. The support members 71 may extend horizontally and be connected to the inner peripheral wall of the base cylinder 3 to connect the inner ladder 7 to the inner peripheral wall of the base cylinder 3, thereby improving the stability of the inner ladder 7 and preventing the first platform 9 and the second platform 10 from increasing their load due to the connection of the inner ladder 7.

[0046] In one embodiment of the present invention, the top of the foundation cylinder 3 may be provided with an anchoring boss 31, the anchoring boss 31 may protrude into the inner space of the foundation cylinder 3 relative to the inner peripheral wall of the foundation cylinder 3, the bottom section 6 of the tower cylinder may be anchored to the anchoring boss 31, and the second platform 10 may be located below the anchoring boss 31.

[0047] like Figures 1-3As shown, optionally, the inner circumferential wall at the top of the foundation cylinder 3 may be provided with an anchoring boss 31. The anchoring boss 31 may be provided with multiple anchor holes 32. The multiple anchor holes 32 may be arranged at intervals along the circumference of the foundation cylinder 3. The anchor holes 32 may penetrate the anchoring boss 31 in the vertical direction. Each anchor hole 32 may be used to install an anchor 5. The anchor 5 may extend in the vertical direction and penetrate into the anchor hole 32 and the cylinder wall of the tower bottom section 6 to anchor the anchoring boss 31 and the tower bottom section 6.

[0048] The second platform 10 can be located below the anchoring boss 31 and the anchor hole 32, so that personnel can install and maintain the anchor 5 on the second platform 10.

[0049] In practical applications, to ensure that at least part of the foundation cylinder 3 is located above the ground so that the doorway 61 has a high height relative to the ground, the foundation cylinder 3 needs to have a long height dimension (i.e., axial dimension). Since the anchoring boss 31 is located at the top of the foundation cylinder 3, the anchoring boss 31 is at a high height, making it difficult for personnel to reach the anchor 5 by relying solely on their height within the cylinder space of the foundation cylinder 3. By setting up a second platform 10 for personnel to stand on, it is easier for personnel on the second platform 10 to reach the anchor 5, thereby facilitating the installation and maintenance of the anchor 5.

[0050] Optionally, the top surface of the base cylinder 3 may be provided with an annular groove extending in the circumferential direction, and the bottom section 6 of the tower cylinder may be embedded in the annular groove to be limited.

[0051] In one embodiment of the present invention, the anchoring boss 31 can extend in a ring shape along the inner peripheral wall of the foundation cylinder 3, and the second platform 10 can be arranged in a ring shape corresponding to the anchoring boss 31.

[0052] like Figure 2 As shown, optionally, the anchoring boss 31 can be annularly extending along the circumference of the foundation cylinder 3, and the anchoring boss 31 can be provided with multiple anchor holes 32, which can be arranged at intervals along the circumference of the anchoring boss 31. The second platform 10 can be annularly extending along the circumference of the foundation cylinder 3 and located below the anchoring boss 31 and the multiple anchor holes 32, allowing personnel to stand on the second platform 10 to install and maintain the anchor 5. At the same time, compared with the disc-shaped second platform 10, the volume and weight of the second platform 10 can be reduced.

[0053] Optionally, the inner elevator 7 may extend to the inner periphery of the second platform 10 to allow personnel to move between the inner elevator 7 and the second platform 10.

[0054] It is understandable that the shape of the anchoring boss 31 is not limited to being annular.

[0055] In another embodiment of the present invention, there may be multiple anchoring protrusions 31, and the multiple anchoring protrusions 31 may be spaced apart along the inner circumferential wall of the foundation cylinder 3. The second platform 10 may be arranged in a ring shape corresponding to the circumferential direction of the multiple anchoring protrusions 31.

[0056] Specifically, the inner circumferential wall of the foundation cylinder 3 can be provided with multiple anchoring protrusions 31, which can be arranged at intervals along the circumference of the foundation cylinder 3. Each anchoring protrusion 31 can be provided with several anchor holes 32, which are also arranged at intervals along the circumference of the foundation cylinder 3. The second platform 10 can be in the shape of a ring extending along the inner circumferential wall of the foundation cylinder 3 and located below the multiple anchoring protrusions 31 and multiple anchor holes 32, allowing personnel to stand on the second platform 10 to install and maintain the anchors 5. At the same time, compared with the disc-shaped second platform 10, the volume and weight of the second platform 10 can be reduced.

[0057] In one embodiment of the present invention, the tower foundation may further include a base plate 1, which may be located below the foundation cylinder 3 for supporting the foundation cylinder 3. The base plate 1 may be annular, and the inner space 13 of the base plate 1 may be connected to the inner space of the foundation cylinder 3. The inner ladder 7 may extend into the inner space 13.

[0058] like Figure 1 and Figure 2 As shown, optionally, the base plate 1 can be set horizontally, the foundation cylinder 3 can be set on the base plate 1, the base plate 1 can be in the shape of a ring with the axial direction parallel to the vertical direction, the internal space formed by the base plate 1 can be the inner space 13, the inner space 13 can be arranged and connected with the inner space of the foundation cylinder 3 from bottom to top, the inner ladder 7 can extend from top to bottom, pass through the passage of the first platform 9 and the inner space formed by the second platform 10 in sequence, and then the bottom end of the inner ladder 7 is in the inner space 13, so that personnel can reach the inner space 13 through the inner ladder 7 and carry out inspection and maintenance on the bottom of the inner space 13 and the base plate 1.

[0059] In one embodiment of the present invention, the tower foundation may further include a cushion layer 101, which may be disposed below the base plate 1, and the inner ladder 7 may extend to the cushion layer 101.

[0060] like Figure 1 and Figure 2 As shown, optionally, the subbase 101 can be horizontally installed, the base plate 1 can be installed on the subbase 101, and the bottom end of the inner ladder 7 can extend from the inner ring space 13 to the subbase 101. Personnel can access the inner ring space 13 via the inner ladder 7 and stand on the subbase 101 to inspect and maintain the subbase 101 and other structures above it. They can also observe the dryness of the inner ring space 13 to determine whether drainage is needed.

[0061] Optionally, such as Figure 1 and Figure 2 As shown, the base plate 1 may include a precast slab section 11 and a post-cast slab section 12. The precast slab section 11 needs to be prefabricated in a prefabrication site such as a production workshop or manufacturing plant, and then transported to the installation site and placed in a designated position. The post-cast slab section 12 can be poured on-site at a designated position in the installation site and is connected to the precast slab section 11.

[0062] The precast slab section 11 may include a plurality of precast slabs 111, which may be arranged at intervals in the circumferential direction of the base slab 1. The post-cast slab section 12 may include a post-cast strip 121 and a post-cast slab 122. The post-cast strip 121 may be cast in place between two adjacent precast slabs 111 to connect the two adjacent precast slabs 111. The post-cast slab 122 may be in the shape of a ring parallel to the vertical direction, and may be selectively but not limited to being in the shape of a ring. The post-cast slab 122 may be cast in place and surround the outer periphery of the plurality of precast slabs 111 connected by the post-cast strip 121, and be connected to the post-cast strip 121 and the precast slabs 111 to form a fastening effect on the plurality of precast slabs 111 and improve the structural strength of the base slab 1.

[0063] In practical applications, personnel in the inner space 13 can observe and maintain the condition of the inner peripheral wall of the base plate 1, that is, they can observe and maintain the condition of the side walls of the precast slab 111 and the post-cast strip 121 facing the inner space 13.

[0064] Optionally, the bottom structure of the wind turbine tower may also include multiple side supports 4, which are spaced apart around the foundation cylinder 3 and connected to the foundation cylinder 3 and the base plate 1 respectively.

[0065] like Figure 1 and Figure 2 As shown, optionally, multiple side supports 4 can be arranged around the outer periphery of the foundation cylinder 3 at intervals. The side supports 4 can extend vertically and be inclined radially along the foundation cylinder 3. The top end of the side support 4 can be closer to the foundation cylinder 3 in the horizontal direction relative to the bottom end. The top end of the side support 4 can be connected to the foundation cylinder 3, and the bottom end of the side support 4 can be connected to the base plate 1 to support between the foundation cylinder 3 and the base plate 1 and bear tension and pressure. The tension and pressure from the tower and wind turbine above the foundation cylinder 3 are transmitted and diffused to the base plate 1, thereby improving the load-bearing capacity and stability of the foundation cylinder 3, and thus improving the load-bearing capacity and stability of the bottom structure of the wind turbine tower.

[0066] Optionally, the bottom end of the side support 4 can be cast in the post-cast strip 121 or in the post-cast slab 122 to ensure the stability and reliability of the connection between the side support 4 and the bottom plate 1. Optionally, it can be cast in the post-cast slab 122.

[0067] Optionally, the lower part of the base plate 1, the lower part of the foundation cylinder 3 and the lower part of the side support 4 can all be located within the backfill layer 8, and the outer ladder 2 can be located between the top surface of the backfill layer 8 and the doorway 61.

[0068] like Figure 1 and Figure 2 As shown, optionally, the lower part of the base plate 1, the lower part of the foundation cylinder 3 and the lower part of the side support 4 are all located in the backfill layer 8. The backfill layer 8 is formed by compacting backfill soil to ensure the stability of the bottom structure of the wind turbine tower. The top surface of the backfill layer 8 can be used as the ground. The external ladder 2 can be located between the top surface of the backfill layer 8 and the doorway 61 so that personnel can easily enter and exit the doorway 61.

[0069] like Figures 1-3 As shown, the wind turbine tower provided in this embodiment of the present invention includes a tower body and a bottom structure of the wind turbine tower provided in this embodiment of the present invention, with the tower body located above the bottom section 6 of the tower.

[0070] Specifically, the tower body can be a hollow cylinder, and the axial direction of the tower body can be parallel to the vertical direction. The tower body can be located above the bottom section 6 of the tower. Optionally, the anchor 5 can be inserted into the wall of the tower body to anchor the tower body, the bottom section 6 of the tower, and the foundation cylinder 3.

[0071] The wind turbine tower provided in this embodiment of the utility model, by adopting the bottom structure of the wind turbine tower provided by the utility model, can increase the distance between the doorway and the ground, so that the position of the doorway can be raised to a higher position relative to the ground. In the event of natural disasters such as floods, the doorway can be prevented from being flooded or submerged. This can prevent damage to the engineering structure and equipment inside the wind turbine tower, corrosion of the wind turbine tower itself, and facilitate personnel to enter and exit the doorway.

[0072] In the description of this utility model, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0073] Furthermore, the terms "first" and "second" are used only for distinction 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 those features.

[0074] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0075] In this utility model, 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," "on top of," and "over" 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.

[0076] In this utility model, 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 this utility model. 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.

[0077] 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. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bottom structure for a wind turbine tower, characterized in that, The tower includes a tower foundation, a tower base section, and an external ladder. The tower foundation includes a foundation cylinder, at least a portion of which is located above the ground. The tower base section is located above the foundation cylinder and has a doorway. The external ladder is located outside the foundation cylinder and the tower base section, between the ground and the doorway.

2. The wind turbine tower base structure according to claim 1, characterized in that, The bottom structure of the wind turbine tower also includes a first platform, which is located in the internal space of the bottom section of the tower and is corresponding to the door opening. The first platform is used to place electrical equipment.

3. The wind turbine tower base structure according to claim 2, characterized in that, The bottom structure of the wind turbine tower also includes a second platform and an inner ladder. The second platform is located in the internal space of the foundation cylinder and below the first platform. The inner ladder is located at least between the first platform and the second platform.

4. The wind turbine tower base structure according to claim 3, characterized in that, The first platform is equipped with a pedestrian passage, and the inner elevator is correspondingly provided with the pedestrian passage.

5. The wind turbine tower base structure according to claim 3, characterized in that, The inner ladder is provided with a support member, and the inner ladder is connected to the base cylinder through the support member.

6. The wind turbine tower base structure according to claim 3, characterized in that, The top of the foundation cylinder is provided with an anchoring boss, which protrudes into the internal space of the foundation cylinder relative to the inner circumferential wall of the foundation cylinder. The bottom section of the tower cylinder is anchored to the anchoring boss, and the second platform is located below the anchoring boss.

7. The wind turbine tower base structure according to claim 6, characterized in that, The anchoring boss extends in a ring shape along the inner circumferential wall of the foundation cylinder, and the second platform is arranged in a ring shape corresponding to the anchoring boss; Alternatively, there may be multiple anchoring bosses, which are spaced apart along the inner circumferential wall of the foundation cylinder, and the second platform is arranged in a ring corresponding to the multiple anchoring bosses in the circumferential direction.

8. The wind turbine tower base structure according to claim 3, characterized in that, The tower foundation also includes a base plate located below the foundation cylinder for supporting the foundation cylinder. The base plate is annular, and the space inside the annular base plate is connected to the space inside the foundation cylinder. The inner ladder extends into the space inside the annular base plate.

9. The wind turbine tower base structure according to claim 8, characterized in that, The tower foundation also includes a cushion layer, which is disposed below the base plate, and the inner ladder extends to the cushion layer.

10. A wind turbine tower, characterized in that, It includes a tower body and a wind turbine tower bottom structure as described in any one of claims 1-9, wherein the tower body is located above the bottom section of the tower.

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