Split tower drum section applied to large-diameter high tower

Abstract

The utility model discloses a fragmented tower drum section applied to a large-diameter high tower, which relates to the field of towers of wind generating sets and is formed by fixedly stacking at least one segment of fragmented drum body, and each fragmented drum body is of a cylindrical drum-shaped structure enclosed by at least two fragmented drum blocks; longitudinal flanges are fixed to the two sides of each fragmented cylinder block, a plurality of flange holes are formed in the longitudinal flanges, and fasteners penetrate through the flange holes to fixedly connect the adjacent fragmented cylinder blocks. According to the utility model, the overall strength of the tower drum section can be effectively ensured, and on the premise of meeting the requirements of wind power markets such as low-wind-speed and high-shear plain areas on high towers and large-impeller units, the tower drum section can be transported under the existing transportation conditions, and the transportation problem of the tower drum section is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of towers of wind power generator sets, in particular to a segmented tower section applied to a high tower with a large diameter. Background Art

[0002] With the rapid development of the wind power industry, the height of wind turbine towers is getting higher and higher. Traditional steel towers can no longer meet this development demand. In order to make the tower reach a higher height and obtain better wind resources, large-diameter towers are increasingly valued for their advantages such as high rigidity, light weight and high height.

[0003] Large-diameter high towers are formed by connecting multiple tower tubes. In order to ensure the overall rigidity of the high tower, the welding positions should be reduced as much as possible to reduce stress concentration points. Therefore, a single tower tube is usually large in size and mass, and requires professional transportation equipment for transportation, which increases transportation costs.

[0004] Therefore, in order to solve the problem of tower transportation, a tower section with a new structure is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a segmented tower section for large-diameter high towers in response to the above-mentioned problems, which effectively ensures the overall strength of the tower section and satisfies the demand for high towers and large impeller units in the wind power market in plain areas with low wind speeds and high shear, thereby realizing the ability to transport the tower section under existing transportation conditions and effectively solving the transportation problem of the tower section.

[0006] The technical solution adopted by the utility model is as follows: a segmented tower section applied to a large-diameter high tower, which is formed by fixing and stacking at least one segmented cylinder body, each segmented cylinder body is a cylindrical tube structure surrounded by at least two segmented cylinder blocks; longitudinal flanges are fixed on both sides of each segmented cylinder block, and a plurality of flange holes are arranged on the longitudinal flanges, and fasteners are provided to pass through the flange holes to fix and connect adjacent segmented cylinder blocks.

[0007] Furthermore, the geometric dimensions of each segmented barrel block are the same.

[0008] Furthermore, the segmented barrel blocks located on the same busbar are connected to the same longitudinal flange.

[0009] Furthermore, after the adjacent segmented barrel blocks are connected, there are gaskets between the longitudinal flanges on the adjacent segmented barrel blocks that are connected to each other; all or part of the fasteners pass through the gaskets.

[0010] Furthermore, a top flange is fixed to the top of the segmented cylinder located at the top, and a bottom flange is fixed to the bottom of the segmented cylinder located at the bottom.

[0011] Furthermore, the top flange or the bottom flange is composed of a plurality of flange blocks, and the flange blocks are fixed on the top and / or the bottom of the corresponding segmented cylinder block.

[0012] Furthermore, connecting pieces are provided between both ends of the longitudinal flange and the flange block.

[0013] Furthermore, the connecting piece is a part of the longitudinal flange, or the connecting piece is an "L"-shaped plate or a 90° arc plate, one end of the connecting piece is fixed to the longitudinal flange, and the other end of the connecting piece is fixed to the flange block.

[0014] Furthermore, the connecting member includes a connecting seat and two connecting ears, which are fixed on both sides of the same end surface of the connecting seat; the connecting seat is connected to two adjacent flange blocks, and the two connecting ears are respectively connected to two adjacent longitudinal flanges.

[0015] The connecting piece comprises a connecting seat and a connecting block. The connecting seat is connected to two adjacent flange blocks. One end of the connecting block is fixedly connected to the connecting seat, and the other end of the connecting block is assembled between two adjacent longitudinal flanges.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. The utility model divides the tower section into a plurality of segmented cylinders, and then divides the segmented cylinders into a plurality of segmented cylinder blocks, that is, assembles a plurality of segmented cylinders into segmented tower sections, so that the tower sections can be transported under existing transportation conditions without the need for professional transportation equipment, thereby effectively solving the transportation problem of the tower sections; it can also reduce the deformation of the overall segmented cylinder during transportation, and ensure the stability of its basic dimensions;

[0018] 2. The utility model provides longitudinal flanges on the segmented cylinder blocks, and the longitudinal flanges connect adjacent segmented cylinder blocks, so that the segmented cylinder blocks can be assembled, and the assembled segmented cylinder body has a higher integrity, thereby ensuring its strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of the segmented tower section disclosed in the utility model;

[0021] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0022] Figure 3 It is a schematic diagram of the top view of the structure of the segmented cylinder in the utility model;

[0023] Figure 4 This is a schematic diagram of a first embodiment of the connection between the longitudinal flange and the flange block in the utility model;

[0024] Figure 5 A schematic diagram of a second embodiment of the connection between the longitudinal flange and the flange block in the utility model;

[0025] Figure 6 This is another schematic diagram of the second embodiment of the connection between the longitudinal flange and the flange block in the utility model;

[0026] Figure 7 This is a schematic diagram of a third embodiment of the connection between the longitudinal flange and the flange block in the utility model;

[0027] Figure 8 for Figure 7 A schematic diagram of the structure of the connecting member disclosed in;

[0028] Fig. 9 This is a schematic diagram of a fourth embodiment of the connection between the longitudinal flange and the flange block in the utility model;

[0029] Fig.10 for Fig. 9 A schematic diagram of the structure of the connecting member disclosed in;

[0030] Markings in the figure: 11-sliced ​​cylinder; 111-sliced ​​cylinder block; 112-flange block; 12-top flange; 13-bottom flange; 14-longitudinal flange; 15-gasket; 16-connecting piece; 161-connecting seat; 162-connecting ear; 163-connecting block. DETAILED DESCRIPTION

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0032] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0033] Example 1

[0034] like Figure 1 - Fig.10As shown, a segmented tower section used for a large-diameter high tower is formed by fixedly stacking at least one segmented cylinder 11, that is, the segmented tower section is a segmented cylinder 11, or the segmented tower section is formed by fixedly stacking at least two segments of segmented cylinders 11, and the fixed stacking method can be fixed by welding or by flange connection; the stacking direction is the axial direction, that is, the multiple segments of segmented cylinders 11 are stacked and assembled in a manner that the axes are colinear; each segmented cylinder 11 is a cylindrical tube structure surrounded by at least two segmented barrel blocks 111; the segmented barrel block 111 is equivalent to being formed by cutting the segmented cylinder 11 along the generatrix; longitudinal flanges 14 are welded and fixed on both sides of each segmented barrel block 111, and a plurality of flange holes are arranged on the longitudinal flange 14, and fasteners are provided to pass through the flange holes to fix and connect adjacent segmented barrel blocks 111, so as to splice the segmented barrel blocks 111 into segmented cylinders 11; in this embodiment, the fasteners are usually bolts.

[0035] In the present embodiment, when transporting tower sections, there is no need to transport large-sized and large-diameter tower sections as a whole. The segmented barrel blocks 111 can be transported to the site under existing transportation conditions and then assembled into tower sections (i.e., segmented tower sections), thereby realizing the transportation of tower sections. No professional transportation equipment is required for transportation, which effectively solves the transportation problem of tower sections. It can also reduce and avoid deformation of the overall tower section or segmented barrel 11 during transportation, thereby ensuring the stability of its basic dimensions. On the other hand, when transporting the segmented barrel blocks 111, the segmented barrel blocks 111 can also be overlapped and stacked, thereby effectively reducing the space required for transportation.

[0036] In this embodiment, by providing a longitudinal flange 14 on the segmented barrel block 111, the longitudinal flange 14 connects adjacent segmented barrel blocks 111, so that the segmented barrel blocks 111 can be assembled, and the assembled segmented barrel body 11 has a high integrity, thereby ensuring the overall strength of the segmented barrel body 11 and the segmented tower barrel section.

[0037] Example 2

[0038] Based on Example 1, a specific implementation method that can be implemented is further proposed.

[0039] A feasible implementation method. As can be seen from the above, the longitudinal flange 14 is a key component connecting two adjacent sliced ​​barrel blocks 111. After being subjected to the pre-tightening force of the fasteners, the two adjacent sliced ​​barrel blocks 111 are connected and fixed; on the one hand, in order to ensure that the pre-tightening force on the sliced ​​barrel body 11 is evenly distributed, the pre-tightening forces between the fasteners offset each other to form the internal force of the sliced ​​barrel body 11; on the other hand, in order to ensure strong wind resistance and avoid local concentration of force; the circumferential curvature value of the sliced ​​barrel block 111 is set to one nth of 360°, where n is a positive integer; the sliced ​​barrel blocks 111 that make up the sliced ​​barrel body 11 are uniformly distributed, that is, the geometric dimensions of each sliced ​​barrel block 111 are the same.

[0040] A feasible implementation manner is that the longitudinal flange 14 installed on the segmented barrel block 111 is preferably an integral type, that is, the segmented barrel blocks 111 located on the same busbar and on different segmented barrels 11 are connected to the same longitudinal flange 14; the segmented barrel blocks 111 are connected together by the entire longitudinal flange 14, thereby improving the integrity of the segmented tower section, thereby improving the overall strength and wind shear resistance of the segmented tower section; when assembling the segmented tower sections, there is no need to worry about whether the adjacent segmented barrels 11 are perfectly aligned, thereby improving the assembly efficiency.

[0041] A feasible implementation method is that after adjacent sliced ​​barrel blocks 111 are connected, there are spacers 15 between the longitudinal flanges 14 connected to each other on the adjacent sliced ​​barrel blocks 111; all fasteners or part of the fasteners pass through the spacers 15, and the spacers 15 play a role in strengthening the connection position of the longitudinal flange 14 to avoid deformation or bending, thereby improving the wind resistance and shear resistance of the sliced ​​barrel body 11 composed of the sliced ​​barrel blocks 111.

[0042] Furthermore, the gasket 15 can be selected as a small gasket 15 of uniform size and thickness, and intermittently assembled between the longitudinal flanges 14 connected to each other on adjacent segmented barrel blocks 111 along the length direction of the longitudinal flange 14; or the gasket 15 can also be selected as a whole gasket 15 with the same length as the longitudinal flange 14, so as to improve the integrity and achieve sufficient strength, rigidity and stability with minimal material cost.

[0043] Furthermore, the longitudinal flange 14 is welded and fixed to the sliced ​​barrel block 111, and there should be a spacing between the installation position of the longitudinal flange 14 and the side wall of the sliced ​​barrel block 111. The size of the spacing is designed according to the size of the gasket 15. The spacing provides space for the installation of the gasket 15, on the one hand to ensure that the gasket 15 can be installed smoothly; on the other hand, it can ensure that adjacent sliced ​​barrel blocks 111 are tightly abutted against each other.

[0044] A feasible implementation manner is that a top flange 12 is fixed to the top of the segmented cylinder 11 at the top, and a bottom flange 13 is fixed to the bottom of the segmented cylinder 11 at the bottom, in order to facilitate the subsequent connection of adjacent segmented tower sections when assembling a high tower, or / and the segmented tower sections and the transition sections, that is, the top flange 12 is used to connect the transition sections or the bottom flange 13.

[0045] Furthermore, the top flange 12 and the bottom flange 13 are both fixed to the inner side of the corresponding segmented barrel block 111, so as to facilitate the operation of the operator on the operating platform inside the tower.

[0046] It should be noted that in Example 1, if the segmented cylinders 11 are stacked by flanges to form segmented tower sections; flanges are provided at both the upper and lower ends of the segmented cylinders 11, and the flange at the upper end serves as the top flange 12 in this embodiment; the flange at the lower end serves as the bottom flange 13 in this embodiment.

[0047] A feasible implementation manner is that the top flange 12 or the bottom flange 13 is composed of a plurality of flange blocks 112, and the top and / or bottom ends of the segmented barrel blocks 111 have corresponding flange blocks 112; as the segmented tower sections are arranged to be composed of segmented barrel blocks 111, the top flange 12 and the bottom flange 13 are also arranged as flange blocks 112, and a plurality of flange blocks 112 can be spliced ​​to form an annular flange; for a large-diameter tower structure, the difficulty of producing and transporting an integral flange is much higher than that of a small flange block 112, so arranging the top flange 12 and the bottom flange 13 as separate structures can greatly reduce the difficulty of production and transportation.

[0048] Example 3

[0049] Based on any one of the implementations in Examples 1-2, a specific implementation method that can be implemented is further proposed.

[0050] In a feasible implementation manner, connecting pieces 16 are provided between both ends of the longitudinal flange 14 and the flange block 112 to strengthen the connection. With respect to the connecting piece 16, there are at least the following feasible implementation manners.

[0051] The first implementation method, such as Figure 4 As shown, the connecting piece 16 is a partial length of the end of the longitudinal flange 14 , that is, the longitudinal flange 14 is directly welded and fixedly connected to the flange block 112 , thereby strengthening the connection integrity between the longitudinal flange 14 and the flange block 112 , and further improving the connection integrity of the segmented cylinder 11 .

[0052] The second implementation method, such as Figure 5-Figure 6 As shown, the connecting member 16 is an "L"-shaped plate or a 90° arc plate. One end of the connecting member 16 is fixedly connected to the longitudinal flange 14 by welding, and the other end of the connecting member 16 is fixedly connected to the flange block 112, thereby strengthening the connection integrity between the longitudinal flange 14 and the flange block 112 and further improving the connection integrity of the segmented cylinder 11.

[0053] The third implementation method, such as Figure 7-Figure 8As shown, the connecting member 16 includes a connecting seat 161 and two connecting ears 162. The connecting seat 161 is fixed to two adjacent flange blocks 112 by bolts or welding. The two connecting ears 162 correspond to two adjacent longitudinal flanges 14 respectively. One end of the connecting ear 162 is fixedly connected to the longitudinal flange 14, and the other end of the connecting ear 162 is fixedly connected to the connecting seat 161. In this manner, the connecting seat 161 strengthens the connection strength of the adjacent segmented cylinder blocks 111, and the connecting ears 162 strengthen the connection between the longitudinal flange 14 and the flange block 112, thereby jointly improving the connection integrity of the segmented cylinder body 11.

[0054] The fourth implementation method is as follows: Figure 9-10 As shown, the connecting member 16 includes a connecting seat 161 and a connecting block 163. The connecting seat 161 is fixed to two adjacent flange blocks 112 by bolts or welding. The connecting seat 161 strengthens the connection strength of adjacent segmented cylinder blocks 111. The connecting block 163 can be used as a cushion block 15 in this embodiment, that is, the connecting block 163 is installed between two adjacent longitudinal flanges 14, and can play the role of a cushion block 15, that is, strengthen the strength of the longitudinal flange 14. The longitudinal flange 14 can also be connected to the flange block 112 through the connecting seat 161, thereby strengthening the connection integrity between the longitudinal flange 14 and the flange block 112, and further improving the connection integrity of the segmented cylinder 11.

[0055] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A segmented tower section applied to a large-diameter high tower, characterized in that: The invention is formed by stacking at least one segmented barrel (11), each segmented barrel (11) being a cylindrical barrel structure surrounded by at least two segmented barrel blocks (111); longitudinal flanges (14) are fixed on both sides of each segmented barrel block (111), a plurality of flange holes are arranged on the longitudinal flange (14), and fasteners are provided to pass through the flange holes to fix and connect adjacent segmented barrel blocks (111).

2. The segmented tower section according to claim 1, characterized in that: The geometrical dimensions of each segmented barrel block (111) are the same.

3. The segmented tower section according to claim 1, characterized in that: The segmented barrel blocks (111) located on the same busbar are connected to the same longitudinal flange (14).

4. The segmented tower section according to claim 1, characterized in that: After adjacent segmented barrel blocks (111) are connected, a spacer (15) is provided between the longitudinal flanges (14) connected to each other on the adjacent segmented barrel blocks (111); all or part of the fasteners pass through the spacer (15).

5. The segmented tower section according to claim 1, characterized in that: A top flange (12) is fixed to the top of the segmented cylinder (11) located at the top, and a bottom flange (13) is fixed to the bottom of the segmented cylinder (11) located at the bottom.

6. The segmented tower section according to claim 5, characterized in that: The top flange (12) or the bottom flange (13) is composed of a plurality of flange blocks (112), and the flange blocks (112) are fixed on the top and / or bottom of the corresponding segmented cylinder block (111).

7. The segmented tower section according to claim 6, characterized in that: Connecting pieces (16) are provided between both ends of the longitudinal flange (14) and the flange block (112).

8. The segmented tower section according to claim 7, characterized in that: The connecting piece (16) is a part of the longitudinal flange (14), or the connecting piece (16) is an "L"-shaped plate or a 90° arc plate. One end of the connecting piece (16) is fixed to the longitudinal flange (14), and the other end of the connecting piece (16) is fixed to the flange block (112).

9. The segmented tower section according to claim 7, characterized in that: The connecting member (16) comprises a connecting seat (161) and two connecting ears (162), wherein the connecting ears (162) are fixed to two sides of the same end surface of the connecting seat (161); the connecting seat (161) is connected to two adjacent flange blocks (112), and the two connecting ears (162) are respectively connected to two adjacent longitudinal flanges (14).

10. The segmented tower section according to claim 9, characterized in that: The connecting member (16) comprises a connecting seat (161) and a connecting block (163); the connecting seat (161) is connected to two adjacent flange blocks (112); one end of the connecting block (163) is fixedly connected to the connecting seat (161); and the other end of the connecting block (163) is assembled between two adjacent longitudinal flanges (14).

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