CN109681390B

CN109681390B - Wind generating set, tower and foundation structure thereof

Info

Publication number: CN109681390B
Application number: CN201811603453.8A
Authority: CN
Inventors: 丛欧; 巫炜; 郝华庚; 冯玉江
Original assignee: Beijing Tianbin High Tech Wind Power Technology Co ltd
Current assignee: Beijing Tianbin High Tech Wind Power Technology Co ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-08-28
Anticipated expiration: 2038-12-26
Also published as: CN109681390A

Abstract

The embodiment of the application provides a wind generating set, a tower and a foundation structure of the tower. The foundation structure includes: a foundation, an anchoring body and an anchoring assembly; the anchoring body is used for being fixedly connected with the foundation; the anchoring assembly is pre-arranged in the anchoring body and is used for being fixedly connected with the prestressed cable. The anchor body and the anchor assembly are arranged on the foundation, and the structure of the foundation is not changed, so that the embodiment of the application can be applied to the transformation of the existing foundation, the function of the foundation can be fully exerted, and the transformation cost of the existing foundation is effectively reduced; through setting up anchor body and anchor subassembly, can satisfy the safety requirement of prestressed cable for can adopt a prestressed tower section of thick bamboo after current basis is through reforming transform, its simple structure has rationally saved engineering cost not only, has effectively improved the suitability of this application embodiment moreover.

Description

Wind generating set, tower and foundation structure thereof

Technical Field

The application relates to the technical field of towers of wind generating sets, in particular to a wind generating set, a tower and a foundation structure of the tower.

Background

With the continuous updating of wind generating set technology, the foundation ring type foundation structure in the prior art can not meet the more and more complex requirements. Therefore need reform transform the foundation structure of current basic ring type, but because the flange of former basic ring is circular flange structure, dozens of bolt holes of structural even arrangement of flange, the bolt hole interval is less. If the prestressed cable is directly connected, on one hand, the bolt hole space is small, and the installation requirement of the prestressed cable cannot be met; on the other hand, the arrangement positions of the bolt holes cannot meet the installation requirement of the prestressed cable.

Disclosure of Invention

The utility model provides a shortcoming to current mode provides a wind generating set, pylon and foundation structure thereof for solve the technical problem that current foundation structure that prior art exists can't be used, make current foundation structure can be applied to the prestressing force tower section of thick bamboo.

In a first aspect, an embodiment of the present application provides a foundation structure of a wind turbine generator system, including: a foundation, an anchoring body and an anchoring assembly;

the anchoring body is used for being fixedly connected with the foundation;

the anchoring assembly is pre-arranged in the anchoring body and is used for being fixedly connected with the prestressed cable.

In an embodiment of the present application, the anchoring assembly includes a plurality of pre-stressed anchor heads, and the pre-stressed anchor heads are connected to the pre-stressed cable and then pre-installed in the anchor body.

In an embodiment of the present application, the anchor assembly includes an anchor cage and a conversion device, the anchor cage passes through the conversion device with prestressed cable fixed connection.

In an embodiment of the present application, the anchoring assembly further comprises an extension rod, and the anchor cage is connected to the conversion device through the extension rod.

In an embodiment of the present application, the anchoring assembly includes a connecting plate and a conversion device, the connecting plate is configured as a circular ring structure and is fixedly connected to a foundation ring disposed in the foundation, and the foundation ring is disposed in the foundation and the anchoring body.

In an embodiment of the present application, the connecting plate is fixedly connected to the foundation ring of the foundation by a fastener, and extends radially outward from the foundation ring.

In an embodiment of the application, still include the conversion crab-bolt, the lower extreme of conversion crab-bolt with connecting plate fixed connection, the upper end of conversion crab-bolt with conversion equipment fixed connection, conversion equipment upper end fixed connection the prestressed cable.

In an embodiment of the present application, the anchor is made of concrete.

In a second aspect, the present application provides a tower for a wind park comprising a foundation structure for a wind park as provided in the first aspect of the present application.

In a third aspect, the present application provides a wind park comprising a tower of a wind park as provided in the second aspect of the present application.

The technical scheme provided by the embodiment of the application has the following beneficial technical effects:

the anchor body and the anchor assembly are arranged on the foundation, and the structure of the foundation is not changed, so that the embodiment of the application can be applied to the transformation of the existing foundation, the function of the foundation can be fully exerted, and the transformation cost of the existing foundation is effectively reduced; through setting up anchor body and anchor subassembly, can satisfy the safety requirement of prestressed cable for can adopt a prestressed tower section of thick bamboo after current basis is through reforming transform, its simple structure has rationally saved engineering cost not only, has effectively improved the suitability of this application embodiment moreover.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of an infrastructure of a wind turbine generator system according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of an alternative wind turbine foundation structure provided in an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a foundation structure of a wind turbine generator system according to an embodiment of the present disclosure;

FIG. 4A is an exploded view of the infrastructure of the wind turbine generator system shown in FIG. 3;

fig. 4B is a schematic perspective view of the infrastructure of the wind turbine shown in fig. 3.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.

In a first aspect, an embodiment of the present application provides a foundation structure of a wind turbine generator system, a schematic structural diagram of the foundation structure is shown in fig. 1, and the foundation structure includes: a foundation 1, an anchoring body 2 and an anchoring component 3; the anchoring body 2 is used for being fixedly connected with the foundation 1; the anchoring component 3 is preset in the anchoring body 2 and is used for being fixedly connected with the prestressed cable 4.

As shown in fig. 1, in the embodiment of the present application, the foundation 1 may be made of a steel-concrete structure. The anchor 2 may be cast of concrete and may be fixedly connected to the foundation 1. When the anchor 2 is a concrete structure, the anchor assembly 3 may be prefabricated inside the structure of the anchor 2. The anchor assembly 3 may be fixedly connected with the prestressed cable 4, so that the embodiment of the present application may be applied to a prestressed tower.

It should be noted that, the present application does not limit the specific material and structure of the anchor body and the specific connection manner with the anchor assembly, in some other embodiments, the anchor body may also be made of a steel structure, and the anchor assembly may also be fixedly connected with the anchor body by welding, screwing, or anchoring, so the embodiments of the present application are not limited thereto, and those skilled in the art can adjust and use the present application according to actual situations.

The anchor body and the anchor assembly are arranged on the foundation, and the structure of the foundation is not changed, so that the embodiment of the application can be applied to the transformation of the existing foundation, the function of the foundation can be fully exerted, and the transformation cost of the existing foundation is effectively reduced; through setting up anchor body and anchor subassembly for can adopt a prestressing force tower section of thick bamboo after reforming transform on current basis, its simple structure has not only rationally saved engineering cost, has effectively improved the suitability of this application embodiment moreover.

In one embodiment of the present application, the anchoring assembly 3 includes a plurality of pre-stressed anchor heads 31, and the pre-stressed anchor heads 31 are connected to the pre-stressed cables 4 and then pre-installed in the anchoring body 2. As shown in fig. 1, the prestressed anchorage 31 may be various types of prestressed anchorages in the prior art, for example, the prestressed anchorage 31 in the form of a metal block is provided with a through hole for the passage of the prestressed cable 4, and the prestressed cable 4 is fixed to the prestressed anchorage after passing through the through hole of the prestressed anchorage 31, but the present application is not limited thereto. After being connected to one end of the prestressed cable 4, a plurality of prestressed anchor heads 31 are prefabricated inside the anchor body 2 on the radial outer side of the foundation ring 11, and the other end of the prestressed cable 4 is connected to the upper tower tube section. It should be noted that, the number of the prestressed anchor heads and the prestressed cables is not limited in the present application, and may be determined according to parameters of the wind turbine generator system, so the present application is not limited to the specific number of the prestressed anchor heads and the prestressed cables. The embodiment of the application has the advantages that the structure is simple and easy to use, and the cost of transforming the foundation into the prestressed tower cylinder can be effectively reduced.

The foundation ring 11 of the present application may be optionally provided inside both the foundation 1 and the anchor 2, and particularly, the foundation ring 11 is provided to protrude from a circular truncated cone having a predetermined height on the top of the foundation in the form of a frustum structure, and the protruding portion is prefabricated inside the anchor 2, thereby simultaneously connecting the foundation 1 and the anchor 2, increasing the connection strength between the two, and becoming a transition supporting means for connecting the prestressed cable 4 to the foundation 1.

In one embodiment of the present application, the anchor assembly 3 includes an anchor cage 32 and a transition device 33, wherein the anchor cage 32 is fixedly connected to the prestressed cable 4 through the transition device 33. As shown in fig. 2, the anchor cage 32 may be a cylindrical cage structure made of metal, but the embodiment of the present application does not limit the concrete material and structure of the anchor cage 32, as long as it can meet the strength requirement. The bottom of the anchor cage 32 can be fixedly connected to the foundation ring 11 of the foundation 1, arranged radially outside the foundation ring 11, prefabricated in the anchoring body 2, and the top thereof can be fixedly connected to a plurality of conversion devices 33, but the present application does not limit the number of conversion devices, which can be arranged corresponding to the number of prestressed cables. The transformation device 33 may specifically adopt a cylindrical structure, and connects the anchor cage 32 and the prestressed cable 4, optionally, the lower portion of the transformation device 33 is connected with the anchor cage 32, the upper portion of the transformation device 33 is connected with the prestressed cable 4, further optionally, an anchoring hole for the prestressed cable 4 to pass through and anchor is provided at the center of the transformation device 33, and connecting holes for the anchor cage 32 to pass through and anchor are provided at both sides of the anchoring hole. The prestressing cable 4 can be fixedly connected to the conversion device 33 by means of a prestressing anchor head (not shown), and the anchor cage 32 can be fixedly connected to the conversion device 33 by means of a screw connection.

It should be noted that, the embodiment of the present application does not limit the specific material and structure of the conversion device, and the connection manner between the prestressed cable and the anchor bolt cage and the conversion device, and the conversion device only needs to satisfy the function of fixedly connecting the prestressed cable and the anchor bolt cage, which is not limited by those skilled in the art.

The embodiment of the application can make the connection of the foundation structure more stable by using the connection mode of the anchor bolt cage and the foundation ring, thereby effectively improving the stability and the safety of the foundation structure. In addition, because the anchor bolt cage is directly fixedly connected with the foundation, the using amount of concrete used by the anchoring body is effectively reduced while the stability of the foundation structure is improved, so that the using cost of the embodiment of the application can be effectively reduced, and the economic benefit of the application is further improved. Furthermore, because the conversion device is arranged outside the anchor body, when the prestressed cable is fatigue, the prestressed cable can be quickly replaced, and therefore the maintenance and use cost of the embodiment of the application is effectively reduced.

In one embodiment of the present application, the length of the anchor cage 32 cannot be set too long to cause unnecessary stress concentration, which reduces the stress stability of the anchor cage 32 and the life thereof when stress concentration occurs. Thus, when it is desired to increase the length of the anchor cage 32, as the case may be, the anchor assembly 3 further includes an extension rod 34, with the extension rod 34 increasing the length of the anchor cage 32. In particular, the anchor cage 32 is connected to the conversion device 33 by means of an extension rod 34. As shown in fig. 2, the extension rod 34 may be a rod-shaped structure, the bottom of the extension rod 34 having external threads at two ends of the extension rod 34 may be fixedly connected to the anchor cage 32 by the conversion nut 341, and the top of the extension rod 34 is fixedly connected to the conversion device 33. However, the application does not limit the specific structure of the extension rod and the connection mode between the extension rod and the anchor bolt cage and the conversion device, and the arrangement can be adjusted by a person skilled in the art according to the actual working condition. Adopt the aim at of above-mentioned setting, when the length of crab-bolt cage can not satisfy the demand, can supplement through the extension rod to can effectively improve the suitability and increase of service life of this application embodiment.

In an embodiment of the present application, the anchoring element 3 comprises a connecting plate 35 and a converting device 33, the connecting plate 35 is configured as a circular ring structure, and is fixedly connected to the foundation ring 11 disposed in the foundation 1, and the foundation ring 11 is disposed inside the foundation 1 and the anchoring body 2. As shown in fig. 3, 4A and 4B, the connecting plate 35 may be a circular plate made of metal material, fixed to the base ring 11 by a fastener 36, extending radially outward of the base ring 11, and disposed inside the anchor 2 to connect the base ring 11 and the conversion anchor 37, and the conversion anchor 37 is fixedly connected to the prestressed cable 4 by the conversion device 33. The connecting plate 35 may also take other shapes, for example, it may take a fan-shaped steel plate or a rectangular steel plate. It should be noted that, the present application does not limit the specific shape and number of the connecting plates, and the specific shape and number need to be determined according to the distribution and number of the prestressed cables, for example, when a plurality of prestressed cables need to be arranged on the windward side of the wind turbine generator system, the connecting plates may be made of fan-shaped steel plates. Therefore, the connecting plate can be adjusted by the person skilled in the art according to the actual situation.

Adopt the aim at of above-mentioned design, the connecting plate can make the design of this application embodiment reasonable more easy-to-use, but also can carry out differentiation customization according to the use operating mode of difference, not only can improve the application scope of this application embodiment, can effectively reduce the use cost of this application moreover.

In one embodiment of the present application, the connection plate 35 is fixedly connected to the foundation ring 11 of the foundation 1 by a fastener 36, and extends radially outward from the foundation ring 11. The foundation ring 11 may be of steel construction which is cast in place with the concrete structure of the foundation 1. The connecting plate 35 may be provided with a plurality of flange fixing connecting bolt holes for connecting with the foundation ring 11, and the fastening member 36 may specifically adopt a bolt connection mode to fixedly connect the connecting plate 35 with the foundation ring 11. It should be noted that the application is not limited to the specific number of the fasteners 36, and the number may be set according to the shape of the connecting plate and the number of the prestressed cables. By adopting the design, the connection stability of the embodiment of the application can be effectively improved, so that the safety and the stability can be greatly improved.

In an embodiment of the present application, the foundation structure of the wind turbine generator system further includes a conversion anchor 37, a lower end of the conversion anchor 37 is fixedly connected to the connecting plate 35, an upper end of the conversion anchor 37 is fixedly connected to the conversion device 33, and an upper end of the conversion device 33 is fixedly connected to the prestressed cable 4. The lower end of the conversion anchor 37 is fixedly connected with the connecting plate 35, so as to be fixedly connected with the foundation ring 11, and is embedded in the anchoring body 2, and the upper part of the conversion anchor 37 is fixedly connected with the conversion device 33 and is fixedly connected with the prestressed cable 4 through the conversion device 33. The conversion anchor 37 can be made of the same material as the prestressing cable 4, for example both made of steel strands. The connecting plate 35 may be provided with a plurality of anchor holes for securing conversion anchors 37. In this embodiment, one conversion device 33 needs to correspond to two conversion anchors, but the present application is not limited thereto, and for example, more than two conversion anchors may be used. After the connecting plate 35 is fixedly connected to the foundation ring 11, and the plurality of conversion anchors 37 are fixedly connected to the connecting plate 35 and the plurality of conversion devices 33, the concrete of the anchor 2 is poured on the above-mentioned components, and the height of the anchor 2 is determined by the required anchoring length of the conversion anchor, so the embodiment of the present application is not limited thereto. The beneficial effects of this embodiment are similar to those of the previous embodiments, and therefore, the description thereof is omitted.

In one embodiment of the present application, the anchor 2 is made of concrete.

Based on the same inventive concept, in a second aspect, the embodiment of the present application provides a tower of a wind generating set, which includes the foundation structure of the wind generating set provided in the first aspect of the present application.

Based on the same inventive concept, in a third aspect, the embodiment of the present application provides a wind generating set, including a tower of the wind generating set provided in the second aspect of the present application.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. A wind turbine generator set substructure, comprising: a foundation, an anchoring body and an anchoring assembly;

the anchoring body is used for being fixedly connected with the foundation;

the anchoring assembly is pre-arranged in the anchoring body and is used for being fixedly connected with the prestressed cable;

still include the foundation ring, the foundation ring sets up the basis and inside the anchor, the foundation ring protrusion has the round platform of predetermined height in the basic top of frustum structural style, and the bulge is prefabricated in the inside of anchor.

2. The substructure of claim 1, wherein the anchor assembly comprises a plurality of prestressed anchor heads, and the prestressed anchor heads are connected with prestressed cables and are pre-installed in the anchor bodies.

3. The substructure of claim 1, wherein the anchor assembly comprises an anchor cage and a transformation device, the anchor cage being fixedly connected to the prestressed cable by the transformation device.

4. The substructure of claim 3, wherein the anchor assembly further comprises an extension bar, the anchor cage being connected to the transformation apparatus via the extension bar.

5. The foundation structure of claim 1 wherein said anchor assembly comprises a connecting plate and a transition device, said connecting plate configured as a ring-shaped structure fixedly connected to a foundation ring disposed within said foundation.

6. The substructure of claim 5, wherein the connection plates are fixedly connected to the foundation rings of the foundation by fasteners extending radially outwardly from the foundation rings.

7. The infrastructure of claim 5, further comprising a conversion anchor, wherein a lower end of the conversion anchor is fixedly connected with the connecting plate, an upper end of the conversion anchor is fixedly connected with the conversion device, and an upper end of the conversion device is fixedly connected with the prestressed cable.

8. The substructure of any of claims 1 to 4, wherein the anchors are concrete anchors.

9. A tower for a wind park comprising a foundation structure for a wind park according to any of claims 1 to 8.

10. A wind park comprising a tower of a wind park according to claim 9.