CN218816765U

CN218816765U - Supporting structure of wind driven generator

Info

Publication number: CN218816765U
Application number: CN202223517171.0U
Authority: CN
Inventors: 吴航; 曹旭东
Original assignee: Xinjiang Goldwind Science and Technology Co Ltd
Current assignee: Jinfeng Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-07
Anticipated expiration: 2032-12-28

Abstract

The application relates to a supporting structure of a wind driven generator, wherein the supporting structure of the wind driven generator comprises a foundation, a plurality of anchor bolts and a tower; one part of each anchor bolt is embedded in the foundation, and the upper end of each anchor bolt protrudes out of the top surface of the foundation; the tower is arranged above the foundation, the bottom of the tower is connected with a connecting component, the lower surface of the connecting component is concavely provided with a connecting concave part, and the part of each anchor bolt protruding out of the top surface of the foundation is positioned and connected in the connecting concave part. The embodiment of the application provides a supporting structure of wind driven generator, can optimize the atress between connecting elements and the pylon bottom, promotes the whole atress homogeneity of supporting structure of wind driven generator.

Description

Supporting structure of wind driven generator

Technical Field

The application relates to the technical field of wind power generation, in particular to a supporting structure of a wind driven generator.

Background

The supporting structure is an important component of the wind generating set and is used for bearing and installing the wind generating set. Existing support structures mainly comprise a foundation and a tower mounted on the foundation. The inside of basis is fixed to be buried underground and is had the crab-bolt, and the upper end protrusion of crab-bolt is in the top surface of basis, and the bottom connection of pylon is equipped with the flange, and the flange is run through and connect soon with a nut in the upper end of crab-bolt, and is fixed the pylon through the nut.

When the support structure is assembled, the fact that the screw nuts need to be in a certain operation space is achieved, a certain distance needs to be reserved between the through holes for the anchor bolts to penetrate through the flange and the tower frame along the radial direction of the tower frame, the flange is large in size along the radial direction of the tower frame, machining cost of the support structure is increased, meanwhile, stress concentration easily occurs at the connecting position between the flange and the tower frame, and accordingly the whole stress distribution of the support structure is uneven.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a bearing structure of aerogenerator, can optimize the atress between connecting elements and the pylon bottom, promotes the whole homogeneity of atress of bearing structure of aerogenerator.

The embodiment of the application provides a supporting structure of a wind driven generator, wherein the supporting structure of the wind driven generator comprises a foundation, a plurality of anchor bolts and a tower; one part of each anchor bolt is embedded in the foundation, and the upper end of each anchor bolt protrudes out of the top surface of the foundation; the tower is arranged above the foundation, the bottom of the tower is connected with a connecting member, the lower surface of the connecting member is concavely provided with a connecting concave part, and the part of each anchor bolt, which protrudes out of the top surface of the foundation, is positioned and connected in the connecting concave part.

According to an aspect of an embodiment of the application, in a radial direction of the tower, a portion of the connecting members protrudes from an inner surface of the tower and another portion of the connecting members protrudes from an outer surface of the tower.

According to an aspect of an embodiment of the application, the connecting members extend in the circumferential direction of the tower to form a closed ring-shaped structure, and the connecting recesses are provided in plurality and are spaced apart in the circumferential direction and/or in the radial direction of the tower.

According to an aspect of the embodiments of the present application, the connecting recess includes a plurality of first connecting recesses and a plurality of second connecting recesses, the plurality of first connecting recesses are annularly arranged along a circumferential direction of the tower on a radially inner side of the tower, the plurality of second connecting recesses are annularly arranged along the circumferential direction of the tower on a radially outer side of the tower, and each first connecting recess and each second connecting recess are provided in one-to-one correspondence along the radial direction of the tower.

According to an aspect of an embodiment of the present application, the plurality of connecting recesses are provided at intervals in a circumferential direction of the tower, and a projection of centers of the connecting recesses falls in a projection of a junction between the tower and the connecting member in an axial direction of the tower.

According to an aspect of the embodiment of the present application, the connection recess is a blind hole, an internal thread is provided on a hole wall of the blind hole, an external thread is formed on an outer peripheral surface of an upper end of the anchor bolt, and the upper end of the anchor bolt is screwed with the blind hole.

According to an aspect of the embodiment of the application, the basis includes the body, and the inside of body is formed with the cavity, and the crab-bolt runs through the body top along the axial of pylon, and the lower extreme of crab-bolt stretches into the inside to the cavity, and the lower extreme of crab-bolt is formed with the external screw thread and has connect the nut soon.

According to an aspect of the embodiment of the present application, a groove is formed on the top surface of the body, a reinforcing member is fixedly disposed in the groove, each anchor bolt penetrates through the bottom of the groove along the axial direction of the tower, and a portion of each anchor bolt is embedded in the reinforcing member.

According to an aspect of the embodiment of the present application, the foundation further includes an extension portion surrounding the body in a circumferential direction of the body, and an upper surface of the extension portion is a tapered surface inclined downward toward a direction away from the body in a radial direction of the tower.

According to one aspect of an embodiment of the application, an anchor plate is provided between the connecting member and the foundation, the anchor bolt extending through the anchor plate.

The supporting structure of aerogenerator that this application embodiment provided, through set up in the concave connection concave part that establishes on the lower surface of the connecting elements of pylon bottom, and make each crab-bolt protrusion in the partial location of the top surface of basis connect in connecting concave part, can save the setting of nut among the prior art, when assembling, connect the concave part and can set up in the optional position department of connecting elements lower surface, need not to reserve operating space at the radial inboard and/or radial outside of pylon, thereby can reduce the radial size of connecting elements along the pylon, reduce the processing cost of connecting elements, reduce the condition that stress concentration appears in the junction between connecting elements and the pylon bottom, promote the whole atress homogeneity of the supporting structure of aerogenerator that this application embodiment provided.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a support structure of a wind turbine according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a connection between a tower bottom of a support structure of a wind turbine of an embodiment of the present application and a connecting member;

FIG. 3 is another schematic structural view of a connection between a tower bottom of a support structure of a wind turbine of an embodiment of the present application and a connecting member;

fig. 4 is an enlarged schematic view of the structure at a in fig. 1.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

The reference numbers illustrate:

1. a foundation; 11. a body; 111. a cavity; 112. a manhole; 12. an extension portion; 13. a reinforcing member; 2. an anchor bolt; 21. a nut; 3. a tower; 4. a connecting member; 41. a connecting recess; 411. a first connection recess; 412. a second connecting recess; 5. an anchor plate; 6. and (7) a backfill layer.

Detailed Description

Features of various aspects of the present application and exemplary embodiments will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The following description will be given with the directional terms as they are shown in the drawings, and not intended to limit the specific structure of the support structure of the wind turbine of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in this application can be understood as appropriate by one of ordinary skill in the art.

For better understanding of the present application, a support structure of a wind turbine according to an embodiment of the present application will be described in detail with reference to fig. 1 to 4.

As shown in fig. 1, the present embodiment provides a supporting structure of a wind turbine, wherein the supporting structure of the wind turbine includes a foundation 1, a plurality of anchor bolts 2, and a tower 3; the foundation 1 is arranged on the ground, and most of the foundation 1 is positioned below the ground and covered by the backfill layer 6; and a small portion of foundation 1 is exposed above the ground for interface with tower 3.

The tower 3 may be a hollow truss structure or a closed tubular structure.

Part of every crab-bolt 2 buries underground in the inside of basis 1 to increase the area of being connected of crab-bolt 2 and basis 1, promote the reliability of being connected between the two, protect crab-bolt 2 through basis 1 simultaneously, reduce the condition of crab-bolt 2 atress deformation.

The upper end of each anchor bolt 2 protrudes out of the top surface of the foundation 1 and is used for being connected with the tower 3, so that the connection between the tower 3 and the foundation 1 is realized.

The tower 3 is arranged above the foundation 1, the bottom of the tower 3 is provided with a connecting component 4 in a connecting way, and the connecting component 4 is fixedly connected with the tower 3 so as to ensure the connecting strength between the two.

The lower surface of the connecting member 4 is concavely provided with a connecting recess 41, and the portion of each anchor bolt 2 protruding from the top surface of the foundation 1 is positioned and connected in the connecting recess 41. The depth of the connecting recess 41 in the axial direction of the tower 3 is smaller than the thickness of the connecting member 4, i.e., the connecting recess 41 does not penetrate the upper surface of the connecting member 4.

The connecting recess 41 and/or the portion of each anchor bolt 2 projecting above the top surface of the foundation 1 may be formed with a positioning structure for positioning the portion of each anchor bolt 2 projecting above the top surface of the foundation 1 in the connecting recess 41.

According to the supporting structure of the wind driven generator provided by the embodiment of the application, the connecting concave part 41 is concavely arranged on the lower surface of the connecting member 4 arranged at the bottom of the tower 3, and the part of each anchor bolt 2 protruding out of the top surface of the foundation 1 is positioned and connected into the connecting concave part 41, the arrangement of nuts in the prior art can be omitted, when the supporting structure is assembled, the connecting concave part 41 can be arranged at any position of the lower surface of the connecting member 4, and an operation space does not need to be reserved on the radial inner side and/or the radial outer side of the tower 3, so that the radial size of the connecting member 4 along the tower 3 can be reduced, the processing cost of the connecting member 4 is reduced, the condition that the stress concentration occurs at the connecting part between the connecting member 4 and the bottom of the tower 3 is reduced, and the overall stress uniformity of the supporting structure of the wind driven generator provided by the embodiment of the application is improved.

As shown in fig. 2 and 3, according to an aspect of the embodiment of the present application, a portion of the connecting member 4 protrudes from an inner surface of the tower 3 in a radial direction of the tower 3, and another portion of the connecting member 4 protrudes from an outer surface of the tower 3. Thereby ensuring a contact area between the connecting member 4 and the foundation 1, so that the weight of the tower 3 is transferred to the connecting member 4 at various positions, and the tower 3 is stably supported by the connecting member 4.

According to an aspect of the embodiment of the present application, the connecting members 4 extend along the circumferential direction of the tower 3 to form a closed ring structure, when the tower 3 is a truss structure, the connecting members 4 may be rectangular ring structures, and when the tower 3 is a tower structure, the connecting members 4 may be circular ring structures.

The plurality of connecting recesses 41 are arranged at intervals along the circumferential direction and/or the radial direction of the tower 3 to realize the installation of the plurality of anchor bolts 2, and the tower 3 is connected with the foundation 1 through the plurality of anchor bolts 2 to improve the reliability of the connection between the tower 3 and the foundation 1.

As shown in fig. 2, according to an aspect of the embodiment of the present application, the connecting recess 41 includes a plurality of first connecting recesses 411 and a plurality of second connecting recesses 412, the plurality of first connecting recesses 411 are annularly arranged along the circumferential direction of the tower 3 on the inner side in the radial direction of the tower 3, the plurality of second connecting recesses 412 are annularly arranged along the circumferential direction of the tower 3 on the outer side in the radial direction of the tower 3, and each first connecting recess 411 and each second connecting recess 412 are provided in one-to-one correspondence along the radial direction of the tower 3. It can be understood that the lower surface of the connecting member 4 is formed with a plurality of connecting positions along the circumferential direction of the connecting member 4, each of which is provided with two connecting recesses and is connected to the foundation 1 by two anchor bolts 2 to secure the connecting strength between the connecting member 4 and the foundation 1.

Alternatively, the first connecting recesses 411 and the second connecting recesses 412 may be alternately arranged in the circumferential direction of the tower 3.

As shown in fig. 3, according to an aspect of the embodiment of the present application, a plurality of connecting recesses 41 are provided at intervals in the circumferential direction of the tower 3, and a projection of the center of the connecting recess 41 falls in a projection of the connection between the tower 3 and the connecting member 4 in the axial direction of the tower 3. It can be understood that, along the axial direction of the tower 3, each connecting recess 41 is located just below the bottom of the side wall of the tower 3, so that the weight of the tower 3 is transmitted to each anchor bolt 2 along the axial direction of the tower 3, thereby optimizing the force of the anchor bolts 2 to the maximum, and at this time, the size of the connecting member 4 protruding from the radially inner side and the radially outer side of the tower 3 can be minimized, and the weight and the manufacturing cost of the connecting member 4 can be reduced.

As shown in fig. 2 and 3, according to one aspect of the embodiment of the present application, the connection recess 41 is a blind hole, an internal thread is provided on a hole wall of the blind hole, an external thread is formed on an outer peripheral surface of an upper end of the anchor bolt 2, and the upper end of the anchor bolt 2 is screwed to the blind hole. The arrangement has the advantages of simple structure and convenience in processing.

Alternatively, other positioning members, such as a groove and a tongue, may be provided on the hole wall of the connecting recess 41 and the outer peripheral surface of the upper end of the anchor bolt 2 to achieve the positioning connection therebetween.

As shown in fig. 1 and 4, according to an aspect of an embodiment of the present application, a base 1 includes a body 11, a cavity 111 is formed inside the body 11, a manhole 112 is formed on a top of the base 1, and a worker can access the inside of the cavity 111 through the manhole 112.

Anchor bolt 2 runs through 11 tops of body along the axial of pylon 3, and the lower extreme of anchor bolt 2 stretches into the inside to cavity 111, and the lower extreme of anchor bolt 2 is formed with the external screw thread and has connect nut 21 soon, so sets up, compares with anchor bolt 2 that runs through 1 top of basis and bottom among the prior art, can effectively shorten anchor bolt 2's length, and simultaneously, anchor bolt 2's lower extreme is in lieing in cavity 111, and the staff of being convenient for carries out the dismouting to it.

As shown in fig. 4, according to an aspect of the embodiment of the present application, a groove is formed on the top surface of the body 11, a reinforcing member 13 is fixedly disposed in the groove, each anchor bolt 2 penetrates through the groove bottom of the groove in the axial direction of the tower 3, and a part of each anchor bolt 2 is embedded in the reinforcing member 13.

The reinforcing structure is formed by pouring high-strength grouting material into the groove and solidifying the grouting material. Structural strength is higher than the structural strength of basis 1 after the high strength grout solidification, has good compressive capacity, can provide stable support to connecting members 4 through setting up reinforcing member 13, can further promote the joint strength between crab-bolt 2 and the basis 1 simultaneously.

As shown in fig. 1, according to an aspect of the embodiment of the present application, the foundation 1 further includes an extension portion 12, the extension portion 12 surrounds the body 11 along a circumferential direction of the body 11, and an upper surface of the extension portion 12 is a tapered surface inclined downward toward a direction away from the body 11 along a radial direction of the tower 3. Extension portion 12 is located the below ground, is covered by backfill layer 6, can increase the area of contact of the part of foundation 1 that buries below the ground and soil through setting up extension portion 12 to promote the stability of foundation 1.

As shown in fig. 4, according to an aspect of the embodiment of the present application, an anchor plate 5 is disposed between the connecting member 4 and the foundation 1, the anchor bolt 2 penetrates through the anchor plate 5, the area of the anchor plate 5 is larger than the area of the lower surface of the connecting member 4, when the tower 3 is installed, the projection of the connecting member 4 completely falls into the projection of the anchor plate 5 along the axial direction of the tower 3, the weight of the tower 3 is transmitted to the foundation 1 through the connecting member 4 to the anchor plate 5, and the anchor plate 5 has a larger contact area with the foundation 1, and by providing the anchor plate 5, the unit pressure at the contact position of the foundation 1 and the anchor plate 5 can be reduced and the stress of the foundation 1 can be optimized according to the principle that the larger area and the smaller pressure are under a certain pressure condition.

According to the supporting structure of the wind driven generator, the connecting concave portion is concavely arranged on the lower surface of the connecting component arranged at the bottom of the tower, and the part of each anchor bolt protruding out of the top surface of the foundation is positioned and connected in the connecting concave portion, the arrangement of nuts in the prior art can be omitted, when the supporting structure is assembled, the connecting concave portion can be arranged at any position of the lower surface of the connecting component, and an operation space does not need to be reserved on the radial inner side and/or the radial outer side of the tower, so that the radial size of the connecting component along the tower can be reduced, the processing cost of the connecting component is reduced, the condition that stress concentration occurs at the connecting position between the connecting component and the bottom of the tower is reduced, and the uniformity of the overall stress of the supporting structure of the wind driven generator provided by the embodiment of the application is improved.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A support structure for a wind power generator, characterized in that it comprises:

a base (1);

the anchor bolts (2), one part of each anchor bolt (2) is embedded in the foundation (1), and the upper end of each anchor bolt (2) protrudes out of the top surface of the foundation (1);

the tower (3) is arranged above the foundation (1), the bottom of the tower (3) is connected with a connecting member (4), a connecting concave part (41) is concavely arranged on the lower surface of the connecting member (4), and the part of each anchor bolt (2) protruding out of the top surface of the foundation (1) is positioned and connected in the connecting concave part (41).

2. Support structure for a wind turbine according to claim 1, characterized in that, in the radial direction of the tower (3), a part of the connection member (4) protrudes from the inner surface of the tower (3) and another part of the connection member (4) protrudes from the outer surface of the tower (3).

3. Support structure for a wind turbine according to claim 1, wherein said connection members (4) extend in the circumferential direction of said tower (3) forming a closed annular structure, said connection recesses (41) being provided in a plurality, said plurality of connection recesses (41) being provided at intervals in the circumferential and/or radial direction of said tower (3).

4. The support structure of a wind power generator according to claim 3, wherein the connecting recess (41) includes a plurality of first connecting recesses (411) and a plurality of second connecting recesses (412), the plurality of first connecting recesses (411) are arranged in a ring shape along the circumferential direction of the tower (3) on the radially inner side of the tower (3), the plurality of second connecting recesses (412) are arranged in a ring shape along the circumferential direction of the tower (3) on the radially outer side of the tower (3), and each of the first connecting recesses (411) and each of the second connecting recesses (412) are arranged in a one-to-one correspondence along the radial direction of the tower (3).

5. The support structure of a wind power generator according to claim 3, wherein a plurality of said connecting recesses (41) are provided at intervals in the circumferential direction of said tower (3), and a projection of the center of said connecting recess (41) falls in a projection of the junction between said tower (3) and said connecting member (4) in the axial direction of said tower (3).

6. The supporting structure of wind power generator according to any one of claims 1 to 5, wherein said connecting recess (41) is a blind hole, the wall of said blind hole is provided with an internal thread, the outer peripheral surface of the upper end of said anchor bolt (2) is provided with an external thread, and the upper end of said anchor bolt (2) is screwed with said blind hole.

7. The supporting structure of a wind power generator according to claim 1, wherein the foundation (1) comprises a body (11), a cavity (111) is formed inside the body (11), the anchor bolt (2) penetrates through the top of the body (11) along the axial direction of the tower (3), the lower end of the anchor bolt (2) extends into the inside of the cavity (111), and the lower end of the anchor bolt (2) is formed with an external thread and is screwed with a nut (21).

8. The supporting structure of a wind power generator according to claim 7, wherein a recess is formed on the top surface of the body (11), a reinforcing member (13) is fixed in the recess, each anchor bolt (2) penetrates through the bottom of the recess in the axial direction of the tower (3), and a part of each anchor bolt (2) is embedded in the reinforcing member (13).

9. Support structure for a wind turbine according to claim 7, characterised in that the foundation (1) further comprises an extension (12), the extension (12) surrounding the body (11) in the circumferential direction of the body (11), the upper surface of the extension (12) being a conical surface sloping downwards in a direction away from the body (11) in the radial direction of the tower (3).

10. Support structure for a wind turbine according to claim 1, characterised in that an anchor plate (5) is provided between said connecting member (4) and said foundation (1), said anchor bolt (2) penetrating said anchor plate (5).