Wind power tower drum

Abstract

The utility model belongs to the technical field of concrete members, and particularly relates to a wind power tower drum. Comprising a tower drum, the tower drum is formed by splicing a plurality of tower pieces in the circumferential direction, radial positioning structures are arranged on the two sides of each tower piece, the tower pieces are connected through the radial positioning structures to form the tower drum, and tower piece circumferential locking structures are arranged on the inner walls of every two adjacent tower pieces. And the tower piece circumferential locking structure corresponds to the radial positioning structure in position, so that the tower piece circumferential locking structure fixes the radial positioning structure in the circumferential direction of the tower drum. The tower piece connecting structure has the advantages that on the basis of the design that the protruding parts and the concave parts are matched and connected with the bolts, a more reasonable mechanical transmission mechanism is utilized, and tower pieces are connected more stably.

Description

Wind turbine tower Technical Field

[0001] This utility model belongs to the field of concrete component technology, specifically relating to a wind turbine tower. Background Technology

[0002] In the field of precast concrete component processing, concrete wind turbine towers are widely used in wind power projects. In particular, the production and application of concrete wind turbine tower segments present numerous challenges in the technology of fastening, splicing, and positioning between segments. These issues directly affect the overall performance and safe, stable operation of the wind turbine tower.

[0003] Concrete wind turbine towers are typically assembled from multiple segments, which places extremely high demands on the connection technology between the segments.

[0004] In terms of fastening, traditional methods are insufficient to meet the mechanical performance requirements of wind turbine towers under complex operating conditions. Wind turbine towers are located at high altitudes and are subjected to various harsh environmental factors such as strong winds, vibrations, and temperature changes. Ordinary fastening methods may loosen due to vibrations, reducing the reliability of the connection and thus affecting the overall stability of the tower, potentially even leading to safety accidents.

[0005] Positioning and limiting technology is also crucial for ensuring the accurate installation and stable operation of concrete wind turbine tower segments. During construction, the lack of precise and reliable positioning and limiting devices can lead to significant deviations in the segment installation position, increasing construction difficulty and costs. Furthermore, during tower operation, the segments may shift and deform due to the dynamic effects of wind. Without effective positioning and limiting measures, this can accumulate over time, potentially causing the tower structure to lose balance and seriously threatening the safe operation of the wind turbine. Summary of the Invention

[0006] The purpose of this utility model is to address the above-mentioned problems by providing a wind turbine tower.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A wind turbine tower includes a tower section, which is formed by splicing several tower sections circumferentially. The tower sections are provided with radial positioning structures on both sides. The several tower sections are connected to each other through the radial positioning structures to form the tower section. The inner wall of every two adjacent tower sections is provided with a tower section circumferential locking structure. The tower section circumferential locking structure corresponds to the radial positioning structure, thereby fixing the radial positioning structure along the circumference of the tower section by the tower section circumferential locking structure.

[0009] In the aforementioned wind turbine tower, the radial positioning structure includes a protrusion on one side of the tower plate and a recess on the other side of the tower plate. The protrusion and the recess are matched in shape and size. When two tower plates approach each other, the protrusion of one tower plate can be inserted into the recess of the other tower plate.

[0010] In the aforementioned wind turbine tower, the recessed portion is a groove that penetrates the upper and lower surfaces of the tower plate, and the protruding portion is a convex strip that connects the upper and lower surfaces of the tower plate. The shape and size of the convex strip and the groove are matched.

[0011] In the aforementioned wind turbine tower, the circumferential locking structure of the tower plate includes two locking bars protruding from the inner wall of the tower plate. The two locking bars correspond to the protruding part and the recessed part of a radial positioning structure, respectively. The two locking bars are provided with several one-to-one corresponding connecting holes.

[0012] In the aforementioned wind turbine tower, the locking bar is provided with several locking grooves, each locking groove corresponding to a connecting hole. When two tower sections approach each other, fasteners are inserted into the connecting holes to lock and fix the two tower sections.

[0013] In the aforementioned wind turbine tower, the tower is provided with several tower plate reinforcement structures. When two towers are connected in a vertical direction, each tower plate reinforcement structure is fixedly connected to two adjacent tower plates of the upper tower and two adjacent tower plates of the lower tower, and the positions of the two adjacent tower plates of the upper tower and the two adjacent tower plates of the lower tower correspond to each other.

[0014] In the aforementioned wind turbine tower, the tower plate reinforcement structure includes four first reinforcement bars that are connected in an X-shape. The end of each first reinforcement bar is fixedly connected to the inner wall of a tower plate. A front clamping plate and a rear clamping plate are provided at the connection of the four first reinforcement bars. The front clamping plate and the rear clamping plate are connected by bolts to clamp and fix the four first reinforcement bars.

[0015] In the aforementioned wind turbine tower, the tower plate reinforcement structure includes an X-shaped reinforcement strip connecting pipe. Each opening of the reinforcement strip connecting pipe is provided with a connecting spring. Each connecting spring connects to a second reinforcement strip, and the end of each second reinforcement strip is fixedly connected to the inner wall of the tower plate.

[0016] In the aforementioned wind turbine tower, the tower is provided with several tower plate support structures, which correspond one-to-one with several tower plates of the tower. Each tower plate support structure is tightly fitted against the inner wall of the corresponding tower plate.

[0017] In the aforementioned wind turbine tower, a central column is provided inside the tower. The tower panel support structure includes longitudinal support columns and transverse support columns. The two ends of the longitudinal support columns are respectively connected to two corresponding tower panels on two adjacent tower sections. One end of the transverse support column is connected to the longitudinal support column, and the other end is connected to the central column.

[0018] Compared with existing technologies, the advantages of this invention are as follows: It uses bolts passing through locking grooves and corresponding holes to achieve segment fastening, based on the principle of mechanical connection. During tightening, the bolts generate axial tension through the threads, ensuring a tight fit between the segments. The radial positioning structure, through the cooperation of protrusions and recesses, provides a stable foundation for bolt fastening, increases the contact area between the segments, evenly distributes the bolt tightening force, and reduces stress concentration. Under complex conditions such as strong winds and vibrations, the bolt preload effectively resists the relative displacement tendency between segments, preventing loosening. Compared to traditional simple fastening methods, this design based on the cooperation of protrusions and recesses with bolt connections utilizes a more rational mechanical transmission mechanism, making the segment connection more stable. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of the tower of this utility model.

[0020] Figure 2 is a schematic diagram of the structure of the tower plate of this utility model.

[0021] Figure 3 is an enlarged view of point A in Figure 1.

[0022] Figure 4 is a schematic diagram of the tower plate reinforcement structure of this utility model.

[0023] Figure 5 is a schematic diagram of Figure 4 from another direction.

[0024] Figure 6 is another structural schematic diagram of the tower plate reinforcement structure of this utility model.

[0025] Figure 7 is a schematic diagram of Figure 6 from another direction.

[0026] Figure 8 is a schematic diagram of the tower support structure of this utility model.

[0027] Figure 9 is a schematic diagram of Figure 8 from another direction.

[0028] In the diagram: 1. Tower cylinder; 2. Tower plate; 3. Radial positioning structure; 4. Protrusion; 5. Recess; 6. Locking groove; 7. Connecting hole; 8. Tower plate reinforcing structure; 9. First reinforcing strip; 9a. First reinforcing strip connecting bolt; 9b. First reinforcing strip fastening bolt; 9c. Clamping bolt; 10. Front clamping plate; 11. Rear clamping plate; 12. Reinforcing strip connecting pipe; 13. Connecting spring; 14. Second reinforcing strip; 15. Tower plate support structure; 16. Central column; 16a. Column sleeve; 17. Longitudinal support column; 18. Transverse support column; 20. Tower plate circumferential locking structure; 21. Locking bar. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] As shown in Figure 1, a wind turbine tower includes a tower 1, which is formed by splicing several tower sections 2 circumferentially. Specifically, as shown in Figure 2, radial positioning structures 3 are provided on both sides of each tower section 2. Several tower sections 2 are interconnected through the radial positioning structures 3 to form the tower 1. A circumferential locking structure 20 is provided on the inner wall of every two adjacent tower sections 2. The circumferential locking structure 20 corresponds to the radial positioning structure 3, thereby fixing the radial positioning structure 3 along the circumference of the tower 1. The radial positioning structure 3 is a concave-convex connection structure, which has a radial positioning effect. The circumferential locking structure 20 locks different tower sections 2 together and locks the radial positioning structure 3, thereby allowing the radial positioning structure 3 to better perform its radial positioning function.

[0031] In this embodiment, the cross-section of the tower 1 can be circular, elliptical, or other irregular shapes. The cross-section of the tower 1 can be the same from top to bottom, or it can be a variable cross-section, as shown in Figure 1, where the cross-section of the tower 1 gradually decreases from bottom to top. Of course, the tower 1 can also be cylindrical. This embodiment does not limit whether the tower 1 has a variable or constant cross-section.

[0032] When the tower 1 is a cylindrical structure, as shown in Figure 1, the cross-section of the tower plate 2 is arc-shaped.

[0033] In existing technologies, tower sections are sometimes spliced ​​together, most directly by using bolts to connect them. However, this method can lead to loosening due to vibration, reducing the reliability of the connection. In this embodiment, a radial positioning structure 3 is used, which can reduce the overall radial loosening of the tower 1, improve the overall stability of the tower, and facilitate construction during connection, significantly increasing the splicing speed.

[0034] Specifically, in this embodiment, as shown in Figures 2 and 3, the radial positioning structure 3 includes a protrusion 4 on one side of the tower plate 2 and a recess 5 on the other side of the tower plate 2. The protrusion 4 and the recess 5 are matched in shape and size. When the two tower plates 2 are close to each other, the protrusion 4 of one tower plate 2 can be inserted into the recess 5 of the other tower plate 2.

[0035] When it is necessary to splice the tower plates 2 into the tower cylinder 1, simply insert the protrusions 4 of two adjacent tower plates into the recesses 5 to form a cylindrical tower cylinder 1. The connection is very convenient. The recesses 5 form a radial stop on the protrusions 4, thereby achieving the function of radially stabilizing the tower cylinder 1.

[0036] Referring to Figures 1 and 3, the circumferential locking structure 20 for the tower plates includes two locking bars 21 protruding from the inner wall of the tower plates 2. These two locking bars 21 are located on two adjacent tower plates 2, respectively. That is, the two locking bars 21 correspond to the protrusion 4 and the recess 5 of a radial positioning structure 3, respectively. The two locking bars 21 are provided with several corresponding connecting holes 7. When the two locking bars 21 are locked, the protrusion 4 and the recess 5 are also locked.

[0037] Specifically, the locking bar 21 is provided with several locking grooves 6, each locking groove 6 corresponding to a connecting hole 7. When the two tower plates 2 approach each other, fasteners are inserted into the connecting holes 7 to lock and fix the two tower plates 2. This fixing is circumferential. The tower plates 2 cooperate with the protrusions 4 and the recesses 5 to achieve synchronous stability in both the circumferential and radial directions, and the stability of the entire tower cylinder 1 is significantly improved.

[0038] The specific shapes of the protrusion 4 and the recess 5 are not limited. In this embodiment, the recess 5 is a groove that penetrates the upper and lower surfaces of the tower plate 2, and the protrusion 4 is a convex strip that connects the upper and lower surfaces of the tower plate 2. The shape and size of the convex strip and the groove are matched, that is, the convex strip can be inserted into the groove.

[0039] The cooperation between the protrusion 4 and the recess 5 provides a stable foundation for bolt tightening, increases the contact area between the tower segments 2, evenly distributes the tightening force of the bolts in the connecting holes 7, and reduces stress concentration. Under complex operating conditions such as strong winds and vibrations, the preload of the bolts can effectively resist the relative displacement tendency between the segments and prevent loosening. Compared with traditional simple tightening methods, this design based on the cooperation between the protrusion 4 and the recess 5 and the bolt connection utilizes a more reasonable mechanical transmission mechanism, making the tower segment connection more stable.

[0040] In addition, this embodiment also provides the following technical solutions for strengthening the connection between tower sections.

[0041] As shown in Figure 4, a number of tower plate reinforcement structures 8 are provided inside the tower cylinder 1. When two tower cylinders 1 are connected in a vertical direction, each tower plate reinforcement structure 8 is fixedly connected to two adjacent tower plates 2 of the upper tower cylinder 1 and two adjacent tower plates 2 of the lower tower cylinder 1. The positions of the two adjacent tower plates 2 of the upper tower cylinder 1 and the two adjacent tower plates 2 of the lower tower cylinder 1 correspond to each other.

[0042] In other words, the tower plate reinforcement structure 8 connects four tower plates 2, namely two tower plates 2 of the upper tower cylinder 1 and two tower plates 2 of the lower tower cylinder 1, thereby forming a fixed connection between tower plates 2 and between tower cylinders 1.

[0043] There are different ways to implement the tower plate reinforcement structure 8, which will be described in detail below.

[0044] As shown in Figures 4 and 5, the tower plate reinforcement structure 8 includes four first reinforcement bars 9 connected in an X-shape. The end of each first reinforcement bar 9 is fixedly connected to the inner wall of a tower plate 2. A front clamping plate 10 and a rear clamping plate 11 are provided at the connection of the four first reinforcement bars 9. The front clamping plate 10 and the rear clamping plate 11 are connected by bolts to clamp and fix the four first reinforcement bars 9.

[0045] Specifically, a first reinforcing strip connecting bolt 9a is fixedly installed on the inner wall of the tower plate 2. One end of the first reinforcing strip 9 is fixed to the inner wall of the tower plate 2 through the first reinforcing strip connecting bolt 9a. The other end of the first reinforcing strip 9 is then fixed to the front clamping plate 10 and the rear clamping plate 11 through the first reinforcing strip fastening bolt 9b. That is, the first reinforcing strip fastening bolt 9b passes through the front clamping plate 10 and the rear clamping plate 11. The front clamping plate 10 and the rear clamping plate 11 are fixed with clamping bolt 9c.

[0046] This embodiment also provides another solution for the tower plate reinforcement structure 8, as shown in Figures 6 and 7. The tower plate reinforcement structure 8 includes an X-shaped reinforcement strip connecting pipe 12. A connecting spring 13 is fixedly installed in each opening of the reinforcement strip connecting pipe 12. Each connecting spring 13 is connected to a second reinforcement strip 14. That is, one end of the connecting spring 13 is inserted into the opening of the reinforcement strip connecting pipe 12 and fixedly connected to the bottom of the opening, and the other end is fixedly connected to the second reinforcement strip 14. The end of each second reinforcement strip 14 is fixedly connected to the inner wall of the tower plate 2. The second reinforcement strip 14 can be fixed to the inner wall of the tower plate in the same way as the first reinforcement strip, or it can be directly welded to the inner wall of the tower plate.

[0047] As shown in Figures 8 and 9, the tower cylinder 1 is equipped with several tower plate support structures 15, which correspond one-to-one with several tower plates 2 of the tower cylinder 1. Each tower plate support structure 15 is tightly fitted against the inner wall of the corresponding tower plate 2. Here, the support refers to the radial support provided to the tower cylinder 1 composed of tower plates 2. The aforementioned tower plate reinforcement structure 8 is circumferentially fixed. Therefore, the combination of the tower plate support structure 15 and the tower plate reinforcement structure 8 provides circumferential and radial reinforcement to the entire tower cylinder.

[0048] The tower 1 has a central column 16 inside. There can be one or more central columns 16. If there are multiple central columns 16, they are fixed together with column sleeves 16a. The central column 16 is used to run electrical conduits or wires. The tower plate support structure 15 includes longitudinal support columns 17 and transverse support columns 18. The two ends of the longitudinal support column 17 are respectively connected to two corresponding tower plates 2 on two adjacent tower 1. The longitudinal support column 17 can be further welded and fixed to the tower plate 2. One end of the transverse support column 18 is connected to the longitudinal support column 17, and the other end is connected to the central column 16.

[0049] The longitudinal support column 17 simultaneously supports the tower plates 2 on two adjacent tower cylinders 1. The tower plates 2 are fixed to the central column 16 by multiple longitudinal support columns 17 and transverse support columns 18, so that the entire tower structure becomes an integrated structure. When the tower is subjected to loads such as wind and gravity, the force can be transmitted more evenly between the tower plates.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

Claims

1. A wind turbine tower comprising a tower section (1) which is assembled from a plurality of tower segments (2) in a circumferential direction, characterized in that The tower plate (2) is provided with radial positioning structures (3) on both sides. Several tower plates (2) are connected to each other through the radial positioning structures (3) to form a tower cylinder (1). The inner wall of each pair of adjacent tower plates (2) is provided with a tower plate circumferential locking structure (20). The tower plate circumferential locking structure (20) corresponds to the position of the radial positioning structure (3), so that the tower plate circumferential locking structure (20) fixes the radial positioning structure (3) along the circumference of the tower cylinder (1).

2. The wind turbine tower of claim 1, wherein, The radial positioning structure (3) includes a protrusion (4) on one side of the tower plate (2) and a recess (5) on the other side of the tower plate (2). The protrusion (4) and the recess (5) are matched in shape and size. When the two tower plates (2) are close to each other, the protrusion (4) of one tower plate (2) can be inserted into the recess (5) of the other tower plate (2).

3. The wind turbine tower according to claim 2, characterized in that, The recessed part (5) is a groove that penetrates the upper and lower surfaces of the tower plate (2), and the protruding part (4) is a convex strip that connects the upper and lower surfaces of the tower plate (2). The shape and size of the convex strip and the groove are matched.

4. The wind turbine tower according to claim 2, characterized in that, The circumferential locking structure (20) of the tower plate includes two locking bars (21) protruding from the inner wall of the tower plate (2). The two locking bars (21) correspond to the protrusion (4) and the recess (5) of a radial positioning structure (3), respectively. The two locking bars (21) are provided with a plurality of corresponding connecting holes (7).

5. The wind turbine tower according to claim 4, characterized in that, The locking bar (21) is provided with several locking grooves (6), each locking groove (6) corresponds to a connecting hole (7). When the two tower pieces (2) approach each other, fasteners are inserted into the connecting hole (7) to lock and fix the two tower pieces (2).

6. The wind turbine tower according to claim 1, characterized in that, The tower (1) is provided with several tower plate reinforcement structures (8). When two towers (1) are connected in a vertical direction, each tower plate reinforcement structure (8) is fixedly connected to two adjacent tower plates (2) of the upper tower (1) and two adjacent tower plates (2) of the lower tower (1). The positions of the two adjacent tower plates (2) of the upper tower (1) and the two adjacent tower plates (2) of the lower tower (1) correspond to each other.

7. The wind turbine tower of claim 6, wherein, The tower plate reinforcement structure (8) includes four first reinforcement strips (9) that are connected in an X-shape. The end of each first reinforcement strip (9) is fixedly connected to the inner wall of a tower plate (2). A front clamping plate (10) and a rear clamping plate (11) are provided at the connection of the four first reinforcement strips (9). The front clamping plate (10) and the rear clamping plate (11) are connected by bolts to clamp and fix the four first reinforcement strips (9).

8. The wind turbine tower of claim 6, wherein, The tower plate reinforcement structure (8) includes an X-shaped reinforcement strip connecting pipe (12). Each port of the reinforcement strip connecting pipe (12) is provided with a connecting spring (13). Each connecting spring (13) is connected to a second reinforcement strip (14). The end of each second reinforcement strip (14) is fixedly connected to the inner wall of the tower plate (2).

9. The wind turbine tower according to claim 1, characterized in that, The tower (1) is provided with a number of tower plate support structures (15), and the number of tower plate support structures (15) corresponds one-to-one with the number of tower plates (2) of the tower (1). Each tower plate support structure (15) is tightly fitted to the inner wall of the corresponding tower plate (2).

10. The wind turbine tower of claim 9, wherein, The tower (1) is provided with a central column (16), and the tower plate support structure (15) includes a longitudinal support column (17) and a transverse support column (18). The two ends of the longitudinal support column (17) are respectively connected to two corresponding tower plates (2) on two adjacent towers (1), and one end of the transverse support column (18) is connected to the longitudinal support column (17), and the other end is connected to the central column (16).

Images