CN210766852U - Foundation structure and wind generating set - Google Patents

Abstract

The utility model relates to a foundation structure and wind generating set. The foundation structure is for supporting a tower, comprising: a foundation assembly buried below ground; the conversion assembly is located between the bottom of basic assembly and pylon, and the conversion assembly includes switching platform and support column, and the support column is kept away from the one end on ground and is stretched into in the switching platform to make somebody a mere figurehead the setting of pylon and apart from predetermined height with ground. The utility model discloses a conversion subassembly is built on stilts the setting with the pylon for enough spaces can be reserved to pylon below and be used for farmland to plough, the road is current etc. saves area. In addition, the support column among the conversion subassembly is kept away from the one end on ground and is stretched into in the switching platform, can be effectively with the load dispersion that the pylon received and transmit to underground foundation assembly, and the biography power route is clear, has improved the stability of pylon.

Description

Foundation structure and wind generating set

Technical Field

The utility model relates to a wind power generation technical field, concretely relates to foundation structure and wind generating set.

Background

With the vigorous popularization of the dispersed wind power generation project in China, more and more small-scale dispersed wind power generation sets are applied to the scenes of farmlands, communities, villages, roads and the like, and after the wind power generation sets are connected to a local power grid, the generated energy can be consumed on site. However, the foundation structure of the wind generating set generally occupies a very large area, especially occupies more cultivated land and roads, cannot meet the traffic requirements of rural roads or the requirements of application scenes such as farmlands, greenhouses and the like, and increases the difficulty and cost of land collection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a foundation structure and wind generating set, this foundation structure area is little, and the site operation cycle is short.

On the one hand, the embodiment of the utility model provides a still provide a foundation structure, this foundation structure is used for supporting the pylon, and it includes: a foundation assembly buried below ground; the conversion assembly is located between the bottom of basic assembly and pylon, and the conversion assembly includes switching platform and support column, and the support column is kept away from the one end on ground and is stretched into in the switching platform to make somebody a mere figurehead the setting of pylon and apart from predetermined height with ground.

According to the utility model discloses an aspect is provided with a plurality of support columns along circumference interval distribution between basic subassembly and the switching platform, and the switching platform includes the annular roof beam, and a plurality of support columns are connected with the annular roof beam.

According to the utility model discloses an aspect, the annular roof beam includes annular web and the last pterygoid lamina and the lower pterygoid lamina of being connected with the axial both ends of web, goes up the pterygoid lamina and is connected with the bottom of pylon, and the support column runs through down the pterygoid lamina and supports and lean on to last pterygoid lamina.

According to the utility model discloses an aspect still is provided with the stiffening beam in the web of annular beam, and the stiffening beam is arranged corresponding to a plurality of support columns along circumference.

According to an aspect of the embodiment of the present invention, the ring beam includes a standard section and a node section which are segmented along the circumferential direction and alternately arranged, and the standard section and the node section respectively include an upper wing plate section forming an upper wing plate, a lower wing plate section forming a lower wing plate, and a web section forming a web; the support column runs through the lower aerofoil section of node section and supports and lean on to the upper aerofoil section, and the stiffening beam is connected with the web section of node section.

According to the utility model discloses an aspect, the switching platform is still including the backup pad that is located the axial both ends of annular beam, and one of them backup pad is connected with last aerofoil, and another backup pad is connected with lower aerofoil to enclose the switching platform into inside hollow enclosed construction.

According to an aspect of the embodiment of the present invention, the hollow inside the support column is provided, and one end of the support column, which is far away from the transfer table, is buried in the ground to a predetermined depth and connected to the base assembly.

According to an aspect of the embodiments of the present invention, the support column is inclined inward in the vertical direction by a predetermined angle.

According to the utility model discloses an aspect, basic subassembly include the plummer and with the pile body of plummer anchor, the plummer is connected with the support column.

According to one aspect of the embodiment of the present invention, the bearing table is a columnar structure, a plurality of bearing tables are arranged along the circumferential direction, and one or more pile bodies are embedded in each bearing table; or the bearing platform is of a conical platform structure, and the plurality of pile bodies are embedded into the conical platform structure.

On the other hand, the embodiment of the utility model provides a wind generating set is still provided, and it includes foundation structure, pylon and installs the energy conversion equipment on the pylon, and this foundation structure is any kind of foundation structure as before.

The embodiment of the utility model provides a foundation structure makes somebody a mere figurehead the setting with the pylon through the conversion subassembly for enough spaces can be reserved to the pylon below and be used for farmland to plough, the road is current, structure building or equipment etc. save area. In addition, one end, far away from the ground, of a supporting column in the conversion assembly extends into the adapter, so that the load borne by the tower can be effectively dispersed and transferred to the foundation assembly below the ground, the force transfer path is clear, and the stability of the tower is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of a tower according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is an enlarged schematic view of region B of FIG. 1;

FIG. 4 is a schematic structural view of a foundation assembly of the tower shown in FIG. 1;

FIG. 5 is a schematic structural view of another foundation assembly of the tower shown in FIG. 1;

FIG. 6 is a schematic structural view of another foundation assembly of the tower shown in FIG. 1.

Wherein:

a T-tower; g-ground; h1-predetermined height; h2-predetermined depth;

10-a base component; 11-a carrier table; 12-pile body;

20-a conversion component; 21-a transfer station; 211-ring beam; 212-a support plate; 213-a reinforcing beam; 22-a support column; 1-upper wing plate; 2-lower wing plate; 3-a web; a-standard section; a node B segment.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention 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 invention. It will be apparent, however, to one skilled in the art that the present invention 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 invention by illustrating examples of the invention. 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 invention; 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 directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also 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 the present invention can be understood as the case may be, by those of ordinary skill in the art.

For better understanding of the present invention, the following describes the foundation structure and the wind turbine generator system provided by the embodiments of the present invention in detail with reference to fig. 1 to 6.

The utility model provides a foundation structure explains as the embodiment with the pylon that is applied to wind generating set, and this wind generating set includes foundation structure, pylon and installs the energy conversion equipment on the pylon. For a large-scale wind generating set, the energy conversion equipment is subjected to repeated load and eccentric force in the direction of 360 degrees, so that the requirement on the stability of the tower is high.

Referring to fig. 1, an embodiment of the present invention provides a foundation structure for supporting a tower T, which includes a foundation assembly 10 and a conversion assembly 20.

The foundation assembly 10 is buried under the ground G, and the ground G may be any of various forms including a land, a sand, a sea bottom, a mountain top, and the like, as long as the wind turbine generator system can be installed.

The conversion assembly 20 is located between the foundation assembly 10 and the bottom of the tower T, the conversion assembly 20 comprises an adapter 21 and a support column 22, and one end of the support column 22 far away from the ground G extends into the adapter 21 so as to enable the tower T to be arranged in an overhead mode and to be spaced from the ground G by a preset height H1.

The adapter 21 may be of a reinforced concrete structure or a steel structure. The one end that support column 22 kept away from ground G stretches into in the switching platform 21, can be directly with the load dispersion that the pylon T received and transmit to the below ground G basic unit 10, pass the power route clear, support stably to some existing stress concentration problems that have dog-ear support form have been eliminated, have improved and have supported the reliability.

The predetermined height H1 between the tower T and the ground G may be, for example, 4m to 10 m. Taking the tower frame built on a field road as an example, the limit height of the agricultural truck is 4.7 meters, the clearance height below the transfer platform 21 can be 6.5m, and the clear width or the diameter is 9.2m, so that the passing requirement of the agricultural truck is met, sufficient space can be reserved for field cultivation, road passing and the like, and the permanent land acquisition area is reduced.

The embodiment of the utility model provides an infrastructure through conversion subassembly 20 with the built on stilts setting of pylon T for enough spaces can be reserved to pylon T below and be used for farmland cultivation, the road is current, structure building or equipment etc. save area. In addition, one end of the supporting column 22 in the conversion assembly 20, which is far away from the ground G, extends into the adapter 21, so that the load borne by the tower T can be effectively dispersed and transmitted to the foundation assembly 10 below the ground G, the force transmission path is clear, and the stability of the tower T is improved.

The specific structures of the base assembly 10 and the conversion assembly 20 are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, a plurality of support columns 22 are disposed between the foundation assembly 10 and the adapting table 21, and are preferably uniformly distributed, so that the plurality of support columns 22 uniformly bear the load of the tower T; the transfer stage 21 includes a ring beam 211, and a plurality of support columns 22 are connected to the ring beam 211.

The ring beam 211 is generally a steel beam, has a simple structure, can be manufactured in advance in a factory, and shortens a construction period in a site compared with a structure in which concrete is cast and formed in an assembly site.

Optionally, the ring beam 211 is an i-beam and includes a ring-shaped web 3, and an upper wing plate 1 and a lower wing plate 2 connected to both axial ends of the web 3, the upper wing plate 1 is connected to the bottom of the tower T, and the plurality of support columns 22 penetrate through the lower wing plate 2 and abut against the upper wing plate 1. The ring beam 211 has good bending resistance, and can effectively transfer the load received by the tower T to the foundation assembly 10 below the ground G through the plurality of supporting columns 22, thereby improving the stability of the tower.

Further, a reinforcing beam 213 is also provided in the web 3 of the ring beam 211, and the reinforcing beam 213 is arranged corresponding to the plurality of support columns 22 in the circumferential direction. Optionally, the number of the supporting columns 22 is four, and the reinforcing beams 213 are distributed in a cross shape in the web 3 of the ring beam 211 to improve the structural strength and rigidity of the ring beam 211.

Since the bearing area of the transfer station 21 is at least greater than or equal to the bottom area of the tower T, the maximum diameter dimension (e.g. 6.5m) of the transfer station 21 exceeds the normal road transportation limit of 5 m. The ring beams 211 may be arranged in sections for easy transport of the adapter station 21.

Optionally, the ring beam 211 includes a standard section a and a node section B segmented and alternately arranged along the circumferential direction, the standard section a and the node section B respectively include an upper wing plate section forming the upper wing plate 1, a lower wing plate section forming the lower wing plate 2, and a web section forming the web 3, the supporting column 22 penetrates through the lower wing plate section of the node section B and abuts against the upper wing plate section, and the reinforcing beam 213 is connected with the web section of the node section B.

The upper wing plate section and the lower wing plate section of the standard section A can be arc-shaped plates, the upper wing plate section and the lower wing plate section of the node section B are special-shaped plates, and the surface area of the special-shaped plates is at least larger than the cross section area of the supporting column 22.

Taking four support columns 22 as an example, the number of the standard sections a and the number of the node sections B of the ring beam 211 are four respectively. The large-diameter ring beam 211 can be divided into four standard sections A and four node sections B after being manufactured in a processing field, the maximum chord length size of each part after being divided is smaller than a road transportation limit value, the parts can be conveniently transported to an assembly field from the processing field through transportation tools, then the standard sections A and the node sections B are spliced into the complete ring beam 211 through high-strength bolts in the assembly field, and the standard sections A and the node sections B can also be spliced into the complete ring beam 211. The reinforcement beam 213 and the node section B may be welded or connected by a high-strength bolt.

Further, the adapting table 21 further comprises support plates 212 located at two axial ends of the ring beam 211, wherein one support plate 212 is connected with the upper wing plate 1, and the other support plate 212 is connected with the lower wing plate 2, so as to enclose the adapting table 21 into an enclosed structure with a hollow interior for placing related equipment or components. The supporting plate 212 may be a concrete plate cast with the ring beam 211, or may be a steel plate. The steel plate can be manufactured in advance in a factory, and the construction period is shorter compared with that of a concrete plate.

If the diameter of the support plate 212 exceeds the typical road transport limits, the support plate 212 may also be circumferentially segmented, either by the same number of segments as the ring beam 211 or by a different number of segments.

From this, each part of switching platform 21 transports the assembly field after the factory is prefabricated, splices each standard section A and nodal point section B for annular roof beam 211 earlier, and the one end of each support column 22 is fixed back with basic unit 10, and the position that the pterygoid lamina was run through to the other end is through spot welding welded connection, and support column 22's top supports and leans on to pass through high strength bolt with both fixed connection behind the last pterygoid lamina 1. The support plate segments are assembled into a complete support plate 212 and then welded or bolted to the upper and lower wing plates 1 and 2, respectively, of the complete ring beam 211. The bottom of the tower T is connected with the upper wing plate 1 in a welding mode or fixedly connected through flange bolts, and then the components on the upper portion of the tower T are hoisted continuously.

Since the adapting table 21 made of the ring beam 211 is lighter in weight than the adapting table 21 made of reinforced concrete while satisfying structural rigidity and strength, the outer contour dimension of the ring beam 211 can be designed to be relatively large. Therefore, the tower T can adopt a customized scheme, the upper part of the tower T is a conventional steel structure tower cylinder or a concrete tower cylinder, and the bottom of the tower T is expanded, for example, the diameter after expansion is 6.0-6.5 m, so that a transformer can be conveniently arranged in the tower T, and the floor area is reduced. The voltage at one end of the wind generating set can be connected to a local power grid after being boosted by a transformer in the tower T. In addition, the electric quantity of the wind generating set can be directly used for farmland irrigation or charging agricultural machinery, and the purpose of local consumption of distributed power generation projects is achieved.

Further, in order to improve the structural strength and rigidity of the supporting column 22, the supporting column 22 is disposed in a hollow manner, and one end of the supporting column 22 away from the adapter 21 is buried in the ground G to a predetermined depth H2 and connected to the base assembly 10. The support column 22 can be a steel pipe column or a steel pipe concrete column, the diameter of the cross section of the support column is generally 0.8-2 m, and the wall thickness is 25-32 mm. The predetermined depth H2 may be, for example, 0.5m to 0.8m, i.e., a land with a depth of 0.5m to 0.8m is reserved on the upper portion of the foundation assembly 10. In the process of constructing the tower, the land reserved on the upper part of the foundation component 10 can be treated, so that the damaged land caused by digging, collapsing, pressing and the like is restored to a state for cultivation, and the waste of land resources is reduced as much as possible.

In order to further increase the support area of the transfer table 21 and thus the stability of the tower T, the support columns 22 are arranged inclined inward in the vertical direction by a predetermined angle. The predetermined angle may be, for example, 0 to 15 deg., and an excessive predetermined angle may reduce the supporting strength of the supporting column 22. Correspondingly, the adapter 21 is a conical table structure, and the outer size of the lower wing plate 2 of the ring beam 211 is larger than that of the upper wing plate 1, so as to meet the connection strength between the ring beam 211 and the support column 22.

Referring to fig. 4 to 6, the foundation assembly 10 includes a bearing platform 11 and a pile 12 anchored to the bearing platform 11, wherein the bearing platform 11 is buried under the ground G to a predetermined depth H2 and connected to a plurality of supporting columns 22. The length of the pile body 12 penetrating into the ground G is about 20m-30m, so that the safety margin of pressure resistance and pulling resistance of the single pile meets the design requirement.

In some embodiments, the bearing platform 11 is a conical platform structure, which may be solid or hollow, and as shown in fig. 4, the plurality of piles 12 are annularly enclosed to form two rings and embedded in the bearing platform 11, and the number of the piles is about 50-60. Four support columns 22 are evenly distributed along the circumferential direction and are arranged corresponding to the pile body 12. The pile body 12 may be a prestressed High-strength Concrete (PHC) pipe pile, which is a hollow equal-section precast Concrete member prepared by adopting advanced processes of pre-tensioning, mixing with ground fine materials, High-efficiency water reducing agents and the like, centrifugally dewatering, compacting and molding Concrete, and performing steam curing twice under normal pressure and High pressure. The PHC tubular pile has the advantages of high single-pile bearing capacity, good hammering resistance of the pile body, strong penetrating power, low manufacturing cost and the like.

This basic subassembly 10 is applicable to large-scale wind generating set, and wherein, hollow toper platform structure is applicable to the more complicated region of topography, and the pile foundation bearing capacity of solid toper platform structure is big, practices thrift the concrete volume.

In some embodiments, the bearing platform 11 is a cylindrical structure, such as a cylinder or a polygonal column, and a plurality of bearing platforms 11 are arranged along the circumferential direction, as shown in fig. 5, the bearing platform 11 is a cubic structure, and a plurality of piles 12 are embedded in each bearing platform 11. The support columns 22 are disposed corresponding to a part of the pile body 12, and the pile body 12 may be a PHC pile as described above. The foundation assembly 10 is suitable for use in smaller wind turbine generators.

In some embodiments, the bearing platform 11 is a cylindrical structure, such as a cylinder or a polygonal cylinder, a plurality of bearing platforms 11 are arranged along the circumferential direction, and a pile 12 is embedded in each bearing platform 11, as shown in fig. 6. The four pile bodies 12 are large-diameter cast-in-place piles, holes are directly formed in designed pile positions, and reinforcing cages are added in the holes after the holes are formed to be cast with concrete. The support columns 22 are arranged in one-to-one correspondence with the pile bodies 12. The cast-in-place pile may be circular in cross-section and may have an outer diameter greater than the outer diameter of support column 22 to provide better support for support column 22. The foundation assembly 10 is suitable for use in smaller wind turbine generators.

Therefore, the utility model provides a wind generating set adopts any kind of foundation structure as before, can be effectively dispersed and transmit the load that pylon T received to the foundation component 10 below ground G through switching platform 21 and a plurality of support columns 22 that are formed by ring beam 211, has improved the support reliability and the safety margin of pylon.

In addition, because the tower T is arranged in the overhead mode through the support columns 12, enough space can be reserved to meet the requirements of application scenes such as farmland ploughing, greenhouse building and road passing, the diameter of the bottom of the tower T can be expanded due to the structure of the annular beam 211, the gearbox is arranged in the tower T, the occupied area is further reduced, the land acquisition difficulty is reduced, and the further popularization of the distributed wind power generation project is facilitated.

While the invention 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 invention. 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 invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A foundation structure for supporting a tower (T), characterized in that it comprises:

a foundation assembly (10) buried under the ground (G);

the conversion assembly (20) is located between the base assembly (10) and the bottom of the tower (T), the conversion assembly (20) comprises a conversion table (21) and a supporting column (22), one end, far away from the ground (G), of the supporting column (22) extends into the conversion table (21) so as to enable the tower (T) to be arranged in an overhead mode and to be away from the ground (G) by a preset height (H1).

2. The substructure according to claim 1, characterized in that a plurality of said supporting columns (22) are arranged between said foundation assembly (10) and said transition table (21) and are distributed at intervals in the circumferential direction, said transition table (21) comprising an annular beam (211), a plurality of said supporting columns (22) being connected to said annular beam (211).

3. Infrastructure according to claim 2, characterized in that said ring beam (211) comprises a ring-shaped web (3) and an upper wing (1) and a lower wing (2) connected to the axial ends of said web (3), said upper wing (1) being connected to the bottom of said tower (T), said support column (22) penetrating said lower wing (2) and abutting to said upper wing (1).

4. A substructure according to claim 3, characterized in that a reinforcement beam (213) is also provided in the web (3) of the ring beam (211), which reinforcement beam (213) is arranged circumferentially in correspondence to a plurality of the support columns (22).

5. The substructure of claim 4, characterized in that the ring beams (211) comprise circumferentially segmented and alternately arranged standard sections (A) and nodal sections (B) comprising respectively an upper panel section forming the upper panel (1), a lower panel section forming the lower panel (2), a web section forming the web (3);

the support column (22) extends through the lower panel section and abuts to the upper panel section of the node section (B), the reinforcement beam (213) being connected with the web section of the node section (B).

6. Infrastructure according to claim 3, characterized in that said transfer station (21) further comprises support plates (212) located at the axial ends of said annular beam (211), one of said support plates (212) being connected to said upper wing (1) and the other of said support plates (212) being connected to said lower wing (2) to enclose said transfer station (21) into an internally hollow closed structure.

7. Infrastructure according to claim 1, characterized in that the support columns (22) are arranged hollow inside and that the end of the support columns (22) remote from the transfer station (21) is buried a predetermined depth (H2) below the ground (G) and connected to the foundation assembly (10).

8. Infrastructure according to claim 1, characterized in that the supporting columns (22) are arranged inclined inwards in a vertical direction by a predetermined angle.

9. Infrastructure according to claim 1, characterized in that the foundation assembly (10) comprises a load carrier (11) and piles (12) anchored to the load carrier (11), the load carrier (11) being connected to the support columns (22).

10. The substructure of claim 9, characterized in that the bearing platforms (11) are columnar structures, a plurality of bearing platforms (11) are arranged along the circumference, each bearing platform (11) is embedded with one or more pile bodies (12);

or the bearing platform (11) is of a conical platform structure, and the pile bodies (12) are embedded into the conical platform structure.

11. A wind park comprising a substructure, a tower (T) and an energy conversion apparatus mounted on the tower (T), characterized in that the substructure is a substructure according to any of claims 1 to 10.

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