阅读说明：本技术 塔架及风力发电装置 (Tower and wind power generation device ) 是由 金鑫 秦海岩 庞慧茹 刘金磊 于 2021-10-11 设计创作，主要内容包括：本申请公开了一种塔架及风力发电装置,其中,该塔架包括第一立柱、多个第二立柱和多个连接部件,所述第一立柱的底端用于与塔基连接,所述第一立柱的顶端用于安装风力发电机组；多个所述第二立柱环绕所述第一立柱设置,所述第二立柱的底端用于与塔基连接,所述第二立柱沿所述第一立柱的长度方向延伸；多个所述连接部件沿所述第一立柱的长度方向依次设置,所述连接部件分别与所述第一立柱和多个所述第二立柱连接。该塔架方便运输,易于组装,现场组装工作量较小,组装周期较短,且组装所需的施工成本较低。(The application discloses a tower and a wind power generation device, wherein the tower comprises a first upright column, a plurality of second upright columns and a plurality of connecting components, the bottom end of the first upright column is used for being connected with a tower footing, and the top end of the first upright column is used for installing a wind power generator set; the second upright columns are arranged around the first upright columns, the bottom ends of the second upright columns are used for being connected with a tower foundation, and the second upright columns extend along the length direction of the first upright columns; the connecting parts are sequentially arranged along the length direction of the first stand column and are respectively connected with the first stand column and the second stand columns. The tower is convenient to transport, easy to assemble, small in field assembling workload, short in assembling period and low in construction cost required by assembling.)

1. A tower, comprising:

the bottom end of the first upright post is used for being connected with a tower footing, and the top end of the first upright post is used for mounting a wind generating set;

the second upright columns are arranged around the first upright column, the bottom ends of the second upright columns are used for being connected with a tower foundation, and the second upright columns extend along the length direction of the first upright columns;

and the connecting parts are sequentially arranged along the length direction of the first stand column and are respectively connected with the first stand column and the second stand columns.

2. The tower of claim 1, wherein the first column comprises a plurality of segments of first sub-columns sequentially arranged along a length direction of the first column, and the second column comprises a plurality of segments of second sub-columns sequentially arranged along a length direction of the second column, and the second sub-columns sequentially correspond to the first sub-columns;

the connecting part is arranged between the adjacent first sub-columns and between the adjacent second sub-columns, and the adjacent first sub-columns and the adjacent second sub-columns are connected through the connecting part.

3. The tower of claim 2, wherein the connecting member comprises a first flange having a first connecting portion at a middle portion and a plurality of second connecting portions disposed around the first connecting portion, wherein adjacent ones of the first sub-columns are connected by the first connecting portion, and adjacent ones of the second sub-columns are connected by the second connecting portion.

4. A tower according to claim 3, wherein said first flange comprises a plurality of first flange plates having a first arcuate joining portion arranged along a first circumference and said second joining portion arranged along a second circumference, said plurality of first arcuate joining portions being arranged sequentially along said first circumference and collectively forming said first joining portion.

5. A tower according to claim 3, wherein said first flange comprises a plurality of first flange plates having first arcuate joining portions arranged along a first circumference and said second joining portions arranged along a second circumference and a plurality of second flange plates having second arcuate joining portions arranged along said first circumference, said plurality of first arcuate joining portions and said plurality of second arcuate joining portions being sequentially spaced along said first circumference and together forming said first joining portion.

6. The tower of claim 3, wherein the first sub-column and the second sub-column are each cylindrical;

the top end and the bottom end of the first sub-upright post respectively extend inwards in the radial direction to form a first top end inner flange and a first bottom end inner flange; the first connecting part is positioned between the first bottom end inner flange of one of the two adjacent first sub-columns and the first top end inner flange of the other first sub-column, and the two adjacent first sub-columns are connected through a first bolt penetrating through the first bottom end inner flange, the first connecting part and the first top end inner flange;

the top end and the bottom end of the second sub-upright post respectively extend outwards along the radial direction to form a second top end outer flange and a second bottom end outer flange; the second connecting portion is located between the second bottom end outer flange of one of the two adjacent second sub-columns and the second top end outer flange of the other one of the two adjacent second sub-columns, and the two adjacent second sub-columns are connected through second bolts penetrating through the second bottom end outer flange, the second connecting portion and the second top end outer flange.

7. The tower of claim 1, wherein a plurality of steel strands are disposed in the second column, top ends of the steel strands are connected to top ends of the second column, and bottom ends of the steel strands are used for being connected to a foundation.

8. The tower frame of claim 7, wherein a steel strand lock is embedded in the tower footing, and the bottom end of the steel strand is connected with the top end of the steel strand lock; or

A steel strand lock is buried in the tower footing, and the bottom end of the steel strand is connected with the steel strand lock through a conversion component.

9. A wind power plant comprising a foundation, a wind power unit and a tower according to any of claims 1 to 8, the first and second uprights of the tower having their bottom ends connected to the foundation, the wind power unit being arranged at the top end of the first upright.

10. The wind turbine generator according to claim 9, wherein an anchor plate is buried in the foundation, and a bottom end of the first column and a bottom end of the second column are connected to the anchor plate.

Technical Field

The application relates to the technical field of land wind power equipment, in particular to a tower and a wind power generation device.

Background

In order to reduce the price and the electricity consumption cost of wind generating sets, land wind generating sets are developing towards single machine high power. The increase of the power of the single machine means that more wind energy needs to be absorbed, the larger the load borne by the fan is, the larger the diameter of the tower is, and the transportation difficulty is increased.

In order to solve the transportation problem, one way is to prefabricate the steel-concrete tower on site, namely prefabricate the concrete section on site, but the problem that the steel-concrete tower is prefabricated on site is: the field workload is large, the concrete production field has the problem of land acquisition or land renting, the quality of the concrete is difficult to control during field construction, and the quality control risk exists.

Another approach is to use segmented towers and truss towers. The partitioned tower divides the tower which is difficult to transport into partitions, and transports the partitions to the field for assembly. The truss type tower adopts a truss type structure, the whole tower is decomposed into a plurality of rod-shaped components, and the rod-shaped components are respectively transported to the site for assembly. Thus, the problem that the large-diameter tower is difficult to transport can be solved.

However, the segmented tower and the truss tower also have the following disadvantages: 1) the segmented tower frame and the truss type tower frame have the problems of more parts, larger workload of on-site assembly and construction, longer period, difficult control of construction period, higher crane cost and labor cost and the like; 2) the pull rods are arranged between the upright columns of the truss type tower frame, the upright columns and the pull rods are connected through bolts, the number of the bolts is large, the bolts need to be maintained regularly, the maintenance cost is high, the bolts are easy to loosen and fall off, and safety risks exist; 3) the electric appliance cabinet bodies required by the wind generating set of the truss type tower are required to be integrated in a container in a centralized manner and placed at the bottom of the truss tower, so that the production cost is increased; 4) the cable of truss-like pylon from the tower bottom to the top of the tower to and help and climb the equipment and all leak in the atmosphere, cause the cable and help and climb the equipment and easily receive weather environment influence, cover ice easily, age easily, and easily take place the accident.

Disclosure of Invention

In view of the above problems in the prior art, the present application provides a tower convenient to transport and install and a wind power generation device using the tower, and the embodiment of the present application adopts the following technical solutions:

one aspect of the present application provides a tower comprising:

the bottom end of the first upright post is used for being connected with a tower footing, and the top end of the first upright post is used for mounting a wind generating set;

the second upright columns are arranged around the first upright column, the bottom ends of the second upright columns are used for being connected with a tower foundation, and the second upright columns extend along the length direction of the first upright columns;

and the connecting parts are sequentially arranged along the length direction of the first stand column and are respectively connected with the first stand column and the second stand columns.

In some embodiments, the first vertical column comprises a plurality of segments of first sub-vertical columns sequentially arranged along the length direction of the first vertical column, the second vertical column comprises a plurality of segments of second sub-vertical columns sequentially arranged along the length direction of the second vertical column, and the second sub-vertical columns sequentially correspond to the first sub-vertical columns;

the connecting part is arranged between the adjacent first sub-columns and between the adjacent second sub-columns, and the adjacent first sub-columns and the adjacent second sub-columns are connected through the connecting part.

In some embodiments, the connecting member includes a first flange having a first connecting portion located in a middle portion and a plurality of second connecting portions disposed around the first connecting portion, adjacent first sub-columns are connected by the first connecting portion, and adjacent second sub-columns are connected by the second connecting portion.

In some embodiments, the first flange includes a plurality of first flange plates having first arcuate connecting portions arranged along a first circumference and second connecting portions arranged along a second circumference, the plurality of first arcuate connecting portions being sequentially disposed along the first circumference and collectively forming the first connecting portions.

In some embodiments, the first flange includes a plurality of first flange plates having first arc-shaped connection portions arranged along a first circumference and second connection portions arranged along a second circumference, and a plurality of second flange plates having second arc-shaped connection portions arranged along the first circumference, the plurality of first arc-shaped connection portions and the plurality of second arc-shaped connection portions being sequentially spaced along the first circumference and collectively forming the first connection portions.

In some embodiments, the first sub-column and the second sub-column are both cylindrical;

the top end and the bottom end of the first sub-upright post respectively extend inwards in the radial direction to form a first top end inner flange and a first bottom end inner flange; the first connecting part is positioned between the first bottom end inner flange of one of the two adjacent first sub-columns and the first top end inner flange of the other first sub-column, and the two adjacent first sub-columns are connected through a first bolt penetrating through the first bottom end inner flange, the first connecting part and the first top end inner flange;

the top end and the bottom end of the second sub-upright post respectively extend outwards along the radial direction to form a second top end outer flange and a second bottom end outer flange; the second connecting portion is located between the second bottom end outer flange of one of the two adjacent second sub-columns and the second top end outer flange of the other one of the two adjacent second sub-columns, and the two adjacent second sub-columns are connected through second bolts penetrating through the second bottom end outer flange, the second connecting portion and the second top end outer flange.

In some embodiments, a plurality of steel strands are arranged in the second upright column, the top ends of the steel strands are connected with the top end of the second upright column, and the bottom ends of the steel strands are used for being connected with a tower footing.

In some embodiments, a steel strand lock is embedded in the tower footing, and the bottom end of the steel strand is connected with the top end of the steel strand lock; or

A steel strand lock is buried in the tower footing, and the bottom end of the steel strand is connected with the steel strand lock through a conversion component.

This application another aspect provides a wind power generation set, including column foot, wind generating set and as above the pylon, the first stand of pylon and the bottom of second stand all with the column foot is connected, wind generating set sets up the top of first stand.

In some embodiments, an anchor plate is embedded in the tower footing, and the bottom end of the first upright column and the bottom end of the second upright column are connected with the anchor plate.

In the tower provided by the embodiment of the application, the first upright post is used as a main upright post and is arranged in the middle of the tower. The wind generating set is installed on the top of first stand, and first stand is used for bearing wind generating set's a part load. The plurality of second stand columns are used as auxiliary stand columns and used for bearing another part of load and are arranged around the first stand columns, and the first stand columns and the plurality of second stand columns are connected together through a plurality of connecting parts which are sequentially arranged along the length direction of the first stand columns to form an integral tower. The tower is convenient to transport, easy to assemble, small in field assembling workload, short in assembling period and low in construction cost required by assembling.

Drawings

FIG. 1 is a schematic structural view of a wind power plant according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along line A-A of the tower of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of the tower of FIG. 1;

FIG. 4 is a schematic structural view of a first flange;

FIG. 5 is a schematic view of a first flange plate;

FIG. 6 is a cross-sectional view taken along line C-C of the first flange plate of FIG. 5;

FIG. 7 is a schematic structural view of a second flange plate;

FIG. 8 is a schematic view of a connection structure between adjacent first sub-columns and between adjacent second sub-columns;

FIG. 9 is a schematic view of another connection structure between adjacent first sub-columns and between adjacent second sub-columns;

FIG. 10 is a partial structural schematic view of a tower according to an embodiment of the present application;

FIG. 11 is a schematic view of a mating connection between a tower and a foundation;

FIG. 12 is a schematic view of another mating connection between a tower and a foundation.

Description of reference numerals:

100-a tower;

200-a first upright; 210-a first sub-column; 220-a first top end inner flange; 230-a first bottom end inner flange; 240-a first top end outer flange; 250-a second positioning hole;

300-a second upright; 310-a second sub-column; 311-a second top end outer flange; 312-a second bottom end outer flange; 313-a fourth positioning hole; 314-an operation hole; 315-end cap; 320-climbing a ladder; 330-maintenance platform; 340-steel strand; 350-steel strand lockset; 360-protective sleeve; 370-a conversion component;

400-a first flange; 410-a first flange plate; 411 — first arc shaped connection; 412-a second connection; 413-a third positioning hole; 414-reinforcing ribs; 415-a hanging hole; 420-a second flange plate; 421-a second arcuate connecting portion; 430-a first connection; 431-a first locating hole; 440-a first bolt; 450-a second bolt; 460-a first positioning peg; 470-a second locating peg; 480-a gasket; 490-a sealing structure;

500-a wind generating set;

600-a tower footing; 610-anchor plate; 620-anchor bolt.

Detailed Description

Various aspects and features of the present application are described herein with reference to the drawings.

It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.

These and other characteristics of the present application will become apparent from the following description of alternative forms of embodiment, given as non-limiting examples, with reference to the attached drawings.

It is also to be understood that although the present application has been described with reference to some specific examples, those skilled in the art are able to ascertain many other equivalents to the practice of the present application.

The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.

The embodiment of the application provides a tower 100, and the tower 100 is applied to a wind power generation device on land and used for supporting a wind power generation unit 500. Referring to fig. 1 to 3, a tower 100 according to an embodiment of the present disclosure may specifically include a first vertical column, a plurality of second vertical columns 300, and a plurality of connecting members, wherein a bottom end of the first vertical column is used for connecting with a tower foundation 600, and a top end of the first vertical column is used for installing a wind turbine generator 500; a plurality of second uprights 300 are arranged around the first upright, the bottom ends of the second uprights 300 are used for being connected with the foundation 600, and the second uprights 300 extend along the length direction of the first uprights; the plurality of connection members are sequentially disposed along a length direction of the first shaft, and the connection members are connected to the first shaft and the plurality of second shafts 300, respectively, to integrally connect the first shaft and the plurality of second shafts 300 to form the tower 100.

With the tower 100 having the above structure, the first column is provided as a main column at the middle of the tower 100. The wind turbine 500 is mounted on top of a first upright, which is adapted to bear a portion of the load of the wind turbine 500. The plurality of second columns 300 are used as auxiliary columns for bearing another part of load, and are arranged around the first column, and the first column and the plurality of second columns 300 are connected together through a plurality of connecting parts sequentially arranged along the length direction of the first column, so that the integral tower 100 is formed.

In this manner, first, formed tower 100 has a higher structural strength, which is beneficial to reducing the diameter of first and second columns 300 for easy transportation while meeting the load requirements of wind turbine 500.

Secondly, during on-site assembly, the whole tower 100 is installed only by connecting the first upright and the second upright 300 with the tower foundation 600 and connecting the first upright and the second uprights 300 into a whole through the connecting parts, so that the on-site assembly workload is small, and the on-site assembly method is beneficial to shortening the assembly period and the construction cost required by assembly.

The connection structure between the third, first and second uprights 300 is simple, easy to maintain, and beneficial to reducing investment cost and maintenance cost.

Fourth, the required electrical equipment of wind generating set 500 can set up in the inside of first stand, the cable also can set up in the inside of first stand with helping to climb the equipment, thus, can reduce whole wind power generation set's investment cost, avoid the cable and help to climb equipment and receive the weather environment influence, ensure to help to climb equipment homoenergetic under the weather conditions of difference and provide normal service function, can also delay electrical equipment, the cable is ageing with helping to climb equipment, prolong electrical equipment, the cable helps and helps to climb the life of equipment.

In some embodiments, the diameter of first shaft may be greater than or equal to the diameter of second shaft 300. Thus, the load that the first column can bear can be increased, so that the overall structural strength of the tower 100 is ensured, and the installation of the electrical equipment required by the wind turbine generator system 500 is facilitated. When the first upright post is specifically implemented, the diameter of the first upright post is increased as much as possible on the basis of meeting the transportation requirement, so that the structural strength and the accommodating space of the first upright post are improved.

In some embodiments, a plurality of second uprights 300 are uniformly arranged equiangularly about the first upright. For example, where tower 100 includes three second masts 300, three second masts 300 may be disposed 120 ° apart around the first mast, as shown in fig. 2. In this way, the loads that the tower 100 can withstand in all directions can be equalized.

In some embodiments, first column includes a plurality of segments of first sub-column 210 sequentially disposed along a length direction of first column, second column 300 includes a plurality of segments of second sub-column 310 sequentially disposed along a length direction of second column 300, and second sub-column 310 sequentially corresponds to first sub-column 210; connecting members are disposed between adjacent first sub-columns 210 and between adjacent second sub-columns 310, and the adjacent first sub-columns 210 and the adjacent second sub-columns 310 are connected by the connecting members. That is, dividing first vertical column into multiple segments of first sub-vertical columns 210, dividing second vertical column 300 into multiple second sub-vertical columns 310, and configuring first sub-vertical columns 210 and second sub-vertical columns 310 to be connected through connecting components, so that transportability of first vertical columns and second vertical columns 300 can be further improved, transportation is facilitated, and transportation cost is reduced.

It should be noted that, that second sub-columns 310 correspond to first sub-columns 210 in sequence means that each second sub-column 310 has one corresponding first sub-column 210, and these first sub-columns 210 and second sub-columns 310 correspond to each other in sequence along the length direction of the first column, and the number of first sub-columns 210 included in the first column is not required to be equal to the number of second sub-columns 310 included in second column 300. For example, the first column may include four first sub-columns 210, and the second column 300 may include three second sub-columns 310, where the three second sub-columns 310 correspond to the three first sub-columns 210 at the bottom, respectively.

In some embodiments, first sub-column 210 and second sub-column 310 may each be cylindrical. The first sub-column 210 and the second sub-column 310 in the shape of a cylinder are convenient to produce and process, the whole installation amount is light, and a closed accommodating space can be formed inside the first sub-column 210, so that the electrical equipment required by the wind generating set 500 can be conveniently installed. Alternatively, the first sub-column 210 may be made by rolling steel plates into cylindrical sections and welding the cylindrical sections to each other. The second sub-column 310 may be welded by using a cylindrical shell made of rolled steel plates, or may be made of seamless steel tubes, as in the first sub-column 210, so as to reduce the workload of welding.

As shown in fig. 3 and 4, in some embodiments, the connecting member includes a first flange 400, the first flange 400 has a first connecting portion located in the middle and a plurality of second connecting portions 412 disposed around the first connecting portion, adjacent first sub-columns 210 are connected by the first connecting portion, and adjacent second sub-columns 310 are connected by the second connecting portion 412. Taking the tower 100 including three second columns 300 as an example, the first flange 400 may include three second connection portions 412, and the three second connection portions 412 may be uniformly arranged around the first connection portion at equal angles of 120 ° and so on, so that the first flange 400 is approximately triangular as a whole. Through the first flange 400 including the first connecting portion and the plurality of second connecting portions 412, can enough link together between the adjacent first sub-stand 210, also can link together between the adjacent second sub-stand 310, can also link together first sub-stand 210 and second sub-stand 310, the flange is whole to be platelike moreover, simple structure, and the size is less, is convenient for transport, easily assembles, and easy to maintain.

In some embodiments, the first flange 400 may include a plurality of first flange plates 410, the first flange plates 410 having first arc-shaped connection portions 411 arranged along a first circumference and second connection portions 412 arranged along a second circumference, the first arc-shaped connection portions 411 of the plurality of first flange plates 410 being sequentially disposed along the first circumference and collectively forming the first connection portions. That is, the first flange 400 has a split structure, and the first flange 400 is divided into the plurality of first flange plates 410, so that the size of a single component can be reduced, which is beneficial to improving the transportability of the first flange 400. Still taking the example of tower 100 comprising three second columns 300, first flange 400 may comprise three first flange plates 410, and each first flange plate 410 may have one circular second connection portion 412 and one first arc-shaped connection portion 411 with a central angle of 120 °. Taking the example where tower 100 includes four second columns 300, first flange 400 may include four first flange plates 410, and the central angle of first arc-shaped connection 411 of each first flange plate 410 may be, for example, 90 °.

As shown in fig. 4 to 7, in some embodiments, the first flange 400 includes a plurality of first flange plates 410 and a plurality of second flange plates 420, the first flange plates 410 have first arc-shaped connection portions 411 arranged along a first circumference and second connection portions 412 arranged along a second circumference, as shown in fig. 5, the second flange plates 420 have second arc-shaped connection portions 421 arranged along the first circumference, as shown in fig. 7, and the plurality of first arc-shaped connection portions 411 and the plurality of second arc-shaped connection portions 421 are sequentially arranged along the first circumference and collectively form the first connection portions, as shown in fig. 4. That is, dividing the first flange 400 into the plurality of first flange plates 410 and the plurality of second flange plates 420 including only the second arc-shaped connection portions 421 is advantageous to reduce the size of the individual constituent elements and improve transportability of the first flange 400.

In some embodiments, the plurality of first arc-shaped connection portions 411 and the plurality of second arc-shaped connection portions 421 are sequentially spaced along the first circumference. Thus, the first flange 400 can be evenly stressed in all directions, which is beneficial to improving the overall structural stability. Taking the first flange 400 including three second connection portions 412 as an example, the first connection portion may be divided into three first arc-shaped connection portions 411 and three second arc-shaped connection portions 421 according to a central angle of 60 degrees, so as to form three first flange plates 410 and three second flange plates 420, and when assembling, the three first flange plates 410 are sequentially arranged at intervals along the first circumference, so that a circular first connection portion can be formed.

As shown in fig. 6, in some embodiments, the first flange 400 is provided with a rib 414, and the rib 414 is located between the first connecting portion and the second connecting portion 412. Because first flange 400 is not only used for bearing vertical load, first flange 400 is still used for bearing the horizontal load between first stand and the second stand 300, and the position that lies in between first connecting portion and second connecting portion 412 on first flange 400 is main atress position, so, set up strengthening rib 414 between first connecting portion and second connecting portion 412, can improve the structural strength of first flange 400, and then improve the joint strength between first stand and the second stand 300, be of value to the stability that improves pylon 100. Taking the example where the first flange 400 includes the first flange plate 410 and the second flange plate 420, the reinforcing ribs 414 may be disposed on the first flange plate 410 between the second connecting portion 412 and the first arc-shaped connecting portion 411. Optionally, a plurality of ribs 414 may be spaced apart from the first flange plate 410 to further increase the structural strength of the first flange plate 410. Optionally, the ribs 414 are disposed in a direction perpendicular to the face of the first flange plate 410. In a preferred embodiment, the reinforcing ribs 414 may further be provided with hanging holes 415 to facilitate the hanging of the first flange plate 410. During assembly, the first flange plate 410 and the second sub-column 310 can be assembled together for hoisting.

As shown in fig. 8, in some embodiments, the top end and the bottom end of the first sub-column 210 extend radially inward to form a first top end inner flange 220 and a first bottom end inner flange 230, respectively; the first connecting portion is located between the first bottom end inner flange 230 of one first sub-column 210 and the first top end inner flange 220 of another first sub-column 210 in two adjacent first sub-columns 210, and the two adjacent first sub-columns 210 are connected through a first bolt penetrating through the first bottom end inner flange 230, the first connecting portion and the first top end inner flange 220. Because the diameter of the first column is usually large, the adjacent first sub-columns 210 are configured to be connected through the inner flange, so that the installation and maintenance are convenient, the first bolts can be prevented from being exposed, and the aging of the first bolts is delayed.

In some embodiments, the top end and the bottom end of second sub-column 310 extend radially outward to form a second top end outer flange 311 and a second bottom end outer flange 312, respectively; second connecting portion 412 is located between second bottom end outer flange 312 of one second sub-column 310 of two adjacent second sub-columns 310 and second top end outer flange 311 of the other second sub-column 310, and two adjacent second sub-columns 310 are connected through a second bolt penetrating through second bottom end outer flange 312, second connecting portion 412 and second top end outer flange 311. Since second column 300 is generally small in diameter, adjacent second sub-columns 310 are configured to be connected through an outer flange, so that installation of the second bolts is facilitated, and periodic maintenance of the second bolts is possible.

Continuing with fig. 8, in an alternative embodiment, the top end of the first sub-column 210 extends radially outward to form a first top end outer flange 240, the first connecting portion and the first top end outer flange 240 are respectively provided with a first positioning hole and a second positioning hole 250, and the first connecting portion and the first top end outer flange 240 are positioned by a first positioning bolt 460 penetrating through the first positioning hole and the second positioning hole 250. After the first connecting portion and the first top end outer flange 240 are positioned by the first positioning bolt 460, the first connecting portion and the first sub-column 210 can be centered, bolt holes in the first connecting portion and the first top end inner flange 220 are aligned, and the first flange 400 and the first sub-column 210 can be preliminarily fixed together, so that the first bolt can be conveniently installed. Optionally, when the first flange 400 is of a split structure, the first flange plate 410 and the second flange plate 420 may be respectively provided with a first positioning hole, so as to respectively position each first flange plate 410 and each second flange plate 420.

In another alternative embodiment, as shown in fig. 9, the first connecting portion and the first top end inner flange 220 are respectively provided with a first positioning hole and a second positioning hole 250, the first connecting portion and the first top end inner flange 220 at the bottom of the first connecting portion are positioned by a first positioning bolt 460 connected inside the first positioning hole and the second positioning hole 250, and the first bottom end inner flange 230 at the top of the first connecting portion covers the first positioning hole. So, not only can realize carrying out the purpose of fixing a position first connecting portion and first top inner flange 220, make the connection structure between first flange 400 and the first sub-stand 210 compacter moreover, be of value to and reduce the raw and other materials quantity and the weight of first sub-stand 210, can also avoid first location bolt 460 to leak outward.

In an alternative embodiment, as shown in fig. 8, the outer diameter of the second top end outer flange 311 is larger than the outer diameter of the second bottom end outer flange 312, the second connecting portion 412 and the second top end outer flange 311 are respectively provided with a third positioning hole 413 and a fourth positioning hole 313, the third positioning hole 413 and the fourth positioning hole 313 are both located outside the periphery of the second bottom end outer flange 312, and the second connecting portion 412 and the second top end outer flange 311 are positioned by a second positioning bolt 470 penetrating the third positioning hole 413 and the fourth positioning hole 313. After the second connecting portion 412 and the second top end outer flange 311 are positioned through the second positioning bolt 470, the second connecting portion 412 and the second sub-column 310 can be centered, bolt holes in the second connecting portion 412 and the second top end outer flange 311 are aligned, and the first flange 400 and the second top end outer flange 311 can be preliminarily fixed together, so that a second bolt can be conveniently installed. Optionally, when the first flange 400 is of a split structure, a third positioning hole 413 may be disposed on each first flange plate 410, so as to position each first flange plate 410 respectively.

In another alternative embodiment, as shown in fig. 9, the second connecting portion 412 and the second top end outer flange 311 are respectively provided with a third positioning hole 413 and a fourth positioning hole 313, the second connecting portion 412 and the second top end outer flange 311 at the bottom of the second connecting portion 412 are positioned by a second positioning pin 470 connected inside the third positioning hole 413 and the fourth positioning hole 313, and the second bottom end outer flange 312 at the top of the second connecting portion 412 covers the third positioning hole 413. In this way, the purpose of positioning between the second connecting portion 412 and the second top end outer flange 311 can be achieved, the connecting structure between the first flange 400 and the second sub-column 310 can be made more compact, the reduction of the raw material consumption and the weight of the second sub-column 310 is facilitated, and the second positioning bolt 470 can be prevented from leaking.

It should be noted that, either the first bolt or the second bolt can be replaced by a high-strength connector such as a rivet, and therefore it should not be understood that the connection between the first flange 400 and the first sub-column 210, and the connection between the first flange 400 and the second sub-column 310 are only limited to the connection by bolts.

In some embodiments, a gasket 480 may be disposed between the first connection portion and the first bottom end inner flange 230 at the top thereof, between the first connection portion and the first top end inner flange 220 at the bottom thereof, between the second connection portion 412 and the second top end outer flange 311 at the bottom thereof, and/or between the second connection portion 412 and the second bottom end outer flange 312 at the top thereof, as shown in fig. 8 and 9. The problem of machining error between first sub-column 210 and second sub-column 310 can be solved by providing spacer 480. Taking the example of disposing the spacer 480 between the second connecting portion 412 and the second top end outer flange 311 at the bottom thereof as an example, assuming that the length of the first sub-column 210 is L and the length of the second sub-column 310 is L, L of the second sub-column 310 should be ensured to be less than or equal to L when the second sub-column 310 is processed, and the thickness δ of the spacer 480 may be determined according to the actual length L of the first sub-column 210 and the length L of the second sub-column 310, that is, δ (L-L). The total thickness δ of the spacer 480 may be composed of a series of spacers of the same shape and the same or different thicknesses. .

In some embodiments, sealing structure 490 is disposed between second connecting portion 412 and second sub-column 310, so as to achieve the purpose of isolating air to some extent, improve the tightness of the column cavity of second column 300, delay air corrosion on the inner wall of second column 300, and be beneficial to prolonging the maintenance period and the service life of second column 300.

In an alternative embodiment, a sealing structure 490 may be formed between second joint 412 and second sub-column 310 by providing a sealant therebetween. For example, a sealant may be applied between the second connection portion 412 and the second bottom end outer flange 312, and between the second connection portion 412 and the second top end outer flange 311, as shown in fig. 8.

In another alternative embodiment, a sealing ring or gasket may be disposed between second connecting portion 412 and second sub-column 310 to form sealing structure 490. For example, a seal groove may be formed in the end surface of the second bottom end outer flange 312 and the end surface of the second top end outer flange 311, and a seal ring may be inserted into the seal groove, as shown in fig. 9.

Optionally, a sealing structure 490 may be further disposed between the first connection portion and the first sub-column 210 to improve the sealing degree of the first column. In particular implementation, the sealing structure 490 between the first connecting portion and the first sub-column 210 may be similar to the sealing structure 490 between the second connecting portion and the second sub-column 310, and will not be described herein again.

As shown in fig. 10, in some embodiments, in order to facilitate maintenance and repair of the connection structure between the second sub-columns 310, a ladder 320 may be disposed on the outer side of the second sub-columns 310, and a platform 330 may be disposed on the second sub-columns 310 near the top end. So that a worker can climb onto the service platform 330 through the ladder 320 to maintain and service the connection structure between the adjacent second sub-columns 310.

In some embodiments, a plurality of steel strands 340 are disposed inside the second column 300, the top ends of the steel strands 340 are connected to the top end of the second column 300, and the bottom ends of the steel strands 340 are used for connecting to the foundation 600. The steel strand 340 can provide prestress, and the rigidity of the second upright 300 in the vertical direction can be improved by arranging the steel strand 340 in the second upright 300, so that the load of the whole tower 100 and the fatigue resistance of the tower 100 are improved.

As shown in fig. 11, in an alternative embodiment, an anchor plate 610 and a steel strand lock 350 may be embedded in the tower footing 600, the steel strand locks 350 may correspond to the steel strands 340 one by one, the bottom end of the steel strand lock 350 may be connected to the anchor plate 610, and the top end of the steel strand lock 350 extends out of the top surface of the tower footing 600 and is connected to the bottom end of the steel strand 340. Alternatively, the strand lock 350 may be, for example, an OW type strand lock 350.

In another alternative embodiment, as shown in fig. 12, an anchor plate 610 and a plurality of steel strand locks 350 may be embedded in the tower footing 600, the bottom ends of the steel strand locks 350 may be connected to the anchor plate 610, the steel strand locks 350 may be connected to the conversion member 370, and the bottom ends of the steel strands 340 are also connected to the conversion member 370. That is, the steel strand lock 350 and the steel strand 340 are connected by the transition member 370. Alternatively, the strand lock 350 may be, for example, a W-type strand lock 350.

Optionally, a protective sleeve 360 may be sleeved outside of stranded wire lock 350 to protect stranded wire lock 350 and support stranded wire lock 350. The protective sleeve 360 may be, for example, a PCV sleeve.

Optionally, an operation hole 314 may be disposed at a position of the second shaft 300 corresponding to the twisted steel wire lock 350, and an operation space may be covered with an end cover 315. During assembly, end cap 315 may be opened, and strand lock 350 and strand 340 may be connected and strand 340 may be secured through access hole 314.

Referring to fig. 1, the present embodiment further provides a wind power generation apparatus, which includes a tower foundation 600, a wind turbine generator 500, and the tower 100 according to any one of the embodiments, wherein the bottom ends of the first and second columns 300 of the tower 100 are connected to the tower foundation 600, and the wind turbine generator 500 is disposed at the top end of the first column.

Since the tower 100 has the advantages of convenience in transportation, easiness in assembly, small field assembly workload, short assembly period, low construction cost required for assembly and the like, the wind power generation device using the tower 100 also has the advantages.

As shown in fig. 11 and 12, in some embodiments, an anchor plate 610 may be embedded in the foundation 600, and the bottom end of the first upright column and the bottom end of the second upright column 300 are connected to the anchor plate 610. That is, the first column and the plurality of second columns 300 share one anchor plate 610, so that the floor area of the tower foundation 600 can be reduced, which is beneficial to reducing the land acquisition area and further beneficial to reducing the overall investment cost. Optionally, an anchor bolt 620 may be embedded in the tower footing 600, the bottom end of the anchor bolt 620 may be connected to the anchor plate 610, and the top end of the anchor bolt 620 may extend from the top surface of the tower footing 600 and be connected to the bottom end of the first column.

The assembly process of tower 100 according to the embodiment of the present application will be described in detail below by taking tower 100 as an example, where tower 100 includes three second columns 300, each second column 300 includes three second sub-columns 310, and the first column includes more than four first sub-columns 210.

One, assembly

When the first sub-column 210 is in a lying state, the second flange plate 420 is installed. The second flange plate 420 and the first top end inner flange 220 may be pre-positioned using the positioning pins, after which the first positioning bolts 460 are installed one by one to fix the second flange plate 420 and the first top end inner flange 220 together, and finally the positioning pins are removed one by one.

When the second sub-upright 310 is in a lying state, accessories such as a ladder 320 and a maintenance platform 330 are installed. The second positioning bolt 470 is inserted into the third positioning hole 413 of the first flange plate 410 and the fourth positioning hole 313 of the second top end outer flange 311 to position the first flange plate 410 and the second top end outer flange 311, so as to ensure that the second connecting part 412 and the second sub-column 310 are concentric and align the bolt holes on the second connecting part 412 and the second sub-column 310, as shown in fig. 10. Of course, the second positioning bolt 470 also primarily fixes the first flange plate 410 and the second sub-column 310 together to facilitate integral hoisting.

Secondly, hoisting

The first sub-column 210 at the bottom section is hoisted to the foundation 600, and the bottom end of the first sub-column 210 is fastened with the anchor bolt 620. And hoisting the second sub-column 310 positioned at the bottom section onto the tower foundation 600, and butting the bottom end of the second sub-column 310 with the anchor bolt 620. The first flange plate 410 and the first top end inner flange 220 are positioned by the first positioning bolt 460, and of course, the first flange plate 410 and the first top end inner flange 220 may be pre-positioned by the positioning pin in advance, and then the first positioning bolt 460 is installed one by one to fix the first flange plate 410 and the first top end inner flange 220 together, and then the positioning pin is removed. After the first positioning pin is installed, the anchor bolt 620 may be tensioned to fasten the second sub-column 310 to the foundation 600. The same process completes the hoisting of all the second sub-columns 310 positioned at the bottom section.

Hoisting the rest first sub-column 210 and the rest second sub-column 310, wherein the hoisting process is similar to that of the first sub-column 210 of the bottom section and that of the second sub-column 310 of the bottom section, and the description is omitted here. In turn, adjacent first sub-uprights 210 are connected together by first bolts and adjacent second sub-uprights 310 are connected together by second bolts, as shown in fig. 8 or 9.

Sealant is coated between first flange 400 and second bottom end outer flange 312 and between first flange 400 and second top end outer flange 311 to form a sealing mechanism, so that the column cavity of second column 300 is sealed to a certain extent, and corrosion of atmosphere to the inner wall of second column 300 is delayed.

Thirdly, installing the steel strand 340

The top end of the steel strand 340 is connected with the top end of the second upright 300, that is, the top end of the steel strand 340 is connected with the top end of the second sub-upright 310 of the top section. After the whole tower frame 100 is hoisted, the steel strand 340 penetrates to the bottom end of the second upright post 300 by means of self weight, the steel strand 340 and the steel strand lock 350 are connected together through the operation hole 314 in the second upright post 300, the steel strand 340 is tensioned and prestressed at the top end of the second upright post 300 at the top section and is fastened to the steel strand 340, and the operation hole 314 is sealed by the end cover 315 after tensioning is completed, as shown in fig. 11 or fig. 12. In this manner, the entire tower 100 assembly process is completed.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.