Split type wind power tower drum

Abstract

The invention relates to the technical field of slice type wind power tower drums, in particular to a slice type wind power tower drum which comprises a first slice body, a second slice body and a quick connecting mechanism, the quick connecting mechanism comprises a transverse connecting assembly and a longitudinal connecting assembly, the first slice body and the second slice body are in butt joint together through the transverse connecting body to form a circular tower drum, and the longitudinal connecting assembly is in butt joint with the transverse connecting body to form the circular tower drum. The longitudinal connecting assembly comprises a longitudinal supporting body, the longitudinal supporting body is connected into the longitudinal connecting groove in a clamped mode and intersects with the transverse connecting body, and the transverse connecting body can be squeezed by the locking block when pressed to the transverse connecting body along the longitudinal connecting groove. The outer ends of the secondary reinforcing rods abut against the cavity wall of the tower drum, a radial pre-tightening mechanism is generated in the longitudinal direction, the radial rigidity and the deformation resistance of the tower drum are effectively improved, and elastic deformation under the action of complex wind loads is prevented.

Description

Technical Field

[0001] This invention relates to the field of plate-type wind turbine tower technology, and particularly to a segmented wind turbine tower. Background Technology

[0002] As wind turbines develop towards larger capacities, the mainstream approach is to increase tower height, lengthen blades, and increase tower diameter. Traditional large-diameter towers exceed the height limit for onshore transportation and incur high transportation costs. Therefore, a segmented design has emerged, which divides the tower into several segments to achieve efficient coordination between prefabrication, transportation, and on-site assembly.

[0003] Existing plate-type wind turbine towers, after being assembled from multiple units, lack a support structure for rapid assembly, which affects their rigidity, especially when resisting radial loads. The radial force they bear will affect their radial strength. Traditional internal support structures are mostly separate skeletons or ribs set in the cylinder cavity, which involves many installation steps and cannot be combined with the tower plate units during assembly. For multi-stage towers, the on-site installation efficiency is low. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a segmented wind turbine tower, comprising a first segment, a second segment, and a quick-connect mechanism. The quick-connect mechanism includes a transverse connecting assembly and a longitudinal connecting assembly. The transverse connecting assembly includes a transverse connecting body, which connects the first segment and the second segment together to form a circular tower. The transverse connecting body has a longitudinal connecting groove, and a locking block is provided on the transverse connecting body near the longitudinal connecting groove. The longitudinal connecting assembly includes a longitudinal support body, which is engaged within the longitudinal connecting groove and intersects with the transverse connecting body. The longitudinal connecting assembly also includes a first inner liner plate disposed within the longitudinal support body. The first inner liner plate has a guide hole, and a secondary reinforcing rod is slidably fitted onto the guide hole. One end of the secondary reinforcing rod is pressed against the locking block, and under the pressure of the locking block, the other end of the secondary reinforcing rod is pressed against the cavity wall of the tower.

[0005] As a further preferred embodiment, the first sheet and the second sheet are equal semi-circular arc structures, and their top ends are provided with flange connection parts. The top end of the transverse connecting body reaches the top surface of the flange connection part, and the bottom end reaches the bottom surface of the first sheet and the second sheet.

[0006] As a further preferred embodiment, the longitudinal connecting groove is formed in the middle of the transverse connecting body, and the longitudinal support is installed in the longitudinal connecting groove and is perpendicular to the transverse connecting body.

[0007] As a further preferred embodiment, the two connecting ends of the first sheet and the second sheet are provided with connecting portions extending vertically outward, the two ends of the transverse connecting body reach the connecting portions, and a connecting hole is provided between the connecting portions and the two ends of the transverse connecting body.

[0008] As a further preferred embodiment, the transverse connecting body is a rectangular hollow tube, wherein the cavity is provided with two second inner lining plates on the left and right, the inner ends of the two second inner lining plates reach the longitudinal connecting groove, and the outer ends of the two second inner lining plates are welded to the cavity walls at both ends of the hollow cavity of the transverse connecting body.

[0009] As a further preferred embodiment, the outer ends of the two second inner lining plates are provided with through holes that communicate with the connecting holes on the same side.

[0010] As a further preferred embodiment, two partition cavities are formed between the front and rear sides of the two second inner lining plates and the cavity wall of the transverse connecting body.

[0011] As a further preferred embodiment, the locking blocks are located symmetrically at two points, and are respectively fixed to the cavity walls of the front and rear partition cavities. The longitudinal support body has two vertical grooves at the position of the longitudinal connecting groove, and the two vertical grooves communicate with the front and rear partition cavities respectively. The first inner liner is located symmetrically at two points, and each of the two first inner liners has a guide hole. A secondary reinforcing rod is slidably inserted into each of the two guide holes. The inner ends of the two secondary reinforcing rods are close to the center of the tower and have a bent portion. The locking blocks have an inclined extrusion surface. The bent portion bends into the vertical groove and is extruded by the inclined extrusion surface, pushing the secondary reinforcing rod radially so that the outer end of the secondary reinforcing rod is pressed against the cavity wall of the tower.

[0012] The advantages of this invention compared to the prior art are: A transverse connector quickly links plate one and plate two together, forming a connecting section of the tower. This design saves a significant number of plate units, allows for rapid connection, and serves not only as a carrier connecting plate one and plate two but also as a lateral reinforcing support for this stage of the tower. The supporting force is concentrated within the tower's diameter, resulting in high strength. A longitudinal support is then installed on top of the transverse connector, forming a cross-support frame inside the tower. The longitudinal support is confined within the tower, creating four stress points. This not only accelerates the assembly efficiency of the segmented tower but also improves the internal strength after assembly. Locking blocks are located on the transverse connector near the longitudinal connecting slot. When the transverse connector is pressed onto the transverse connector along the longitudinal connector groove, it is squeezed by the locking block, causing the outer end of the secondary reinforcing rod to press tightly against the cavity wall of the tower, creating a radial pre-tightening mechanism in the longitudinal direction. This effectively improves the radial stiffness and deformation resistance of the tower, preventing elastic deformation under complex wind loads. Combining the installation method of the transverse support with the rapid installation of the longitudinal support improves assembly efficiency. Attached Figure Description

[0013] Figure 1 A schematic diagram from a first-view perspective of a segmented wind turbine tower assembly provided for an embodiment of the present invention; Figure 2 A segmented wind turbine tower provided for embodiments of the present invention comprises... Figure 1 The resulting top-view planar structural diagram; Figure 3 A schematic diagram of the various parts of a segmented wind turbine tower before assembly, provided for an embodiment of the present invention, from a second perspective; Figure 4 A segmented wind turbine tower provided for embodiments of the present invention comprises... Figure 3 The diagram illustrates the concept from a third-person perspective; Figure 5 A segmented wind turbine tower provided for embodiments of the present invention comprises... Figure 1 A schematic diagram showing the cutaway view; Figure 6 A segmented wind turbine tower provided for embodiments of the present invention comprises... Figure 5 A diagram illustrating the fourth perspective.

[0014] In the figure: 1. Sheet 1; 2. Sheet 2; 3. Transverse connecting assembly; 4. Longitudinal connecting assembly; 5. Transverse connecting body; 6. Tower; 7. Longitudinal connecting groove; 8. Locking block; 9. Longitudinal support body; 10. First inner liner plate; 11. Guide hole; 12. Secondary reinforcing rod; 13. Flange connection part; 14. Connection part; 15. Connection hole; 16. Second inner liner plate; 17. Through hole; 18. Separation cavity; 19. Vertical groove; 20. Bending part; 21. Inclined extrusion surface. Detailed Implementation

[0015] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] In one implementation, such as Figures 1-6 As shown: This embodiment provides a segmented wind turbine tower, including a first segment 1, a second segment 2, and a quick-connect mechanism. The quick-connect mechanism includes a transverse connecting component 3 and a longitudinal connecting component 4. The transverse connecting component 3 includes a transverse connecting body 5, which connects the first segment 1 and the second segment 2 together to form a circular tower 6. The transverse connecting body 5 has a longitudinal connecting groove 7, and a locking block 8 is provided on the transverse connecting body 5 near the longitudinal connecting groove 7. The longitudinal connecting component 4 includes a longitudinal support body 9, which is engaged in the longitudinal connecting groove 7 and intersects with the transverse connecting body 5. The longitudinal connecting component 4 also includes a first inner liner plate 10 disposed in the longitudinal support body 9. The first inner liner plate 10 has a guide hole 11, and a secondary reinforcing rod 12 is slidably fitted on the guide hole 11. One end of the secondary reinforcing rod 12 is pressed against the locking block 8, and the other end of the secondary reinforcing rod 12 is pressed against the cavity wall of the tower 6 by the pressure of the locking block 8.

[0017] In this embodiment, the transverse connector 5 quickly connects plate 1 and plate 2 together, forming a connecting segment of the tower 6. This saves a large number of plate units, allows for rapid connection, and the transverse connector 5 not only serves as a carrier connecting plate 1 and plate 2, but also as a transverse reinforcing support for this stage of the tower 6. The supporting force is concentrated within the diameter of the tower 6, resulting in high strength. To further enhance the longitudinal reinforcing support within the tower 6 in conjunction with the transverse connector 5, a longitudinal support 9 is added on top of the transverse connector 5. The longitudinal support 9 and the transverse connector 5 together form a cross-support frame filling the interior of the tower 6, significantly increasing the overall rigidity of the tower 6. First, the transverse connecting body 5 is used to connect the first plate 1 and the second plate 2 together to form the first-stage tower 6. Then, as the transverse connecting body 5 connects the first plate 1 and the second plate 2, the longitudinal support body 9 is confined inside the tower 6, so that four stress points are formed on the tower 6. This not only speeds up the assembly efficiency of the segmented tower 6, but also improves the internal strength of the tower 6 after assembly.

[0018] In addition, such as Figures 2 to 6 As shown, a longitudinal connecting groove 7 is provided on the transverse connecting body 5. The longitudinal support body 9 is quickly assembled onto the transverse connecting body 5 by pressing it downward into the longitudinal connecting groove 7. In conjunction with this quick-assembly feature, a first inner liner plate 10 is provided inside the longitudinal support body 9. A guide hole 11 is provided on the first inner liner plate 10, and a secondary reinforcing rod 12 slides within the guide hole 11. A locking block 8 is also provided on the transverse connecting body 5 near the longitudinal connecting groove 7. When the transverse connecting body 5 is pressed downward along the longitudinal connecting groove 7, the inner end of the transverse connecting body 5 is squeezed by the locking block 8, causing the secondary reinforcing rod 12 to slide radially along the guide hole 11. Specifically, after one end of the secondary reinforcing rod 12 is squeezed by the locking block 8, its other end presses against the cavity wall of the tower 6, thereby establishing a continuous radial constraint force inside the tower 6. This radial pre-tightening mechanism effectively improves the radial stiffness and deformation resistance of the tower 6, preventing elastic deformation under complex wind loads and avoiding gaps or stress fluctuations at the connection interface between adjacent tower stages 6. The secondary reinforcing rod 12, through the locking block 8 pressing against the tower wall to form a locking force, also facilitates its installation into the tower 6 along with the longitudinal support 9. This quick-connect mechanism design achieves synergy between efficient assembly and internal support, solving the problem of insufficient stiffness and weak radial strength in segmented wind turbine towers 6 due to the lack of a quick-support structure, thus ensuring the safety and stability of the tower 6 during long-term use. In particular, the radial pre-tightening mechanism of the secondary reinforcing rod 12 solves the problem of insufficient stiffness and weak radial strength caused by the lack of a quick-support structure after assembly of segmented wind turbine towers 6, ensuring the safety and service life of the structure.

[0019] In another embodiment, sheet 1 and sheet 2 are equal semi-circular arc structures, and their top ends are provided with flange connection parts 13. The top end of the transverse connecting body 5 reaches the top surface of the flange connection part 13, and the bottom end reaches the bottom surface of sheet 1 and sheet 2.

[0020] like Figures 1 to 4 As shown, the equal semi-circular arc structure of plate 1 and plate 2 means that the two plates are completely symmetrical in geometry. The purpose is to ensure that a seamless, complete circular cross-section can be formed during docking, avoiding assembly deviations caused by shape differences. After the two are connected by the transverse connecting body 5, their flange connection parts 13 at the top will also dock, facilitating the docking of this stage tower 6 with the previous stage tower 6. The top of the transverse connecting body 5 extends to the top surface of the flange connection part 13, which ensures that the support of the connection area covers the top interface of the tower 6 and is fixed by bolts. The bottom of the transverse connecting body 5 extends to the bottom surface of plate 1 and plate 2, covering the entire height range of the plates and providing continuous bottom support, which can be achieved by snap-fit ​​or adhesive. The top of the transverse connector 5 extends to the top surface of the flange connection 13, preventing local stress concentration caused by insufficient support and effectively dispersing the load at the flange connection. The bottom extends to the bottom surface of plate 1 and plate 2, avoiding weak points at the connection interface at the bottom, further strengthening the tower 6's resistance to deformation under dynamic wind loads, and effectively extending the service life of the structure.

[0021] In another embodiment, the longitudinal connecting groove 7 is formed in the middle of the transverse connecting body 5, and the longitudinal support 9 is installed in the longitudinal connecting groove 7 and is perpendicular to the transverse connecting body 5.

[0022] like Figures 3 to 5 As shown, by placing the longitudinal connecting groove 7 in the middle of the transverse connecting body 5, the support point is positioned on the axis of symmetry, thus avoiding the torque effect caused by positional offset. The longitudinal support body 9 is embedded vertically, ensuring that the support direction is completely consistent with the radial direction of the tower 6, and can directly resist radial displacement caused by wind load. The transmission path of the support force is optimized, and the clamping effect of the quick-connect mechanism on the cavity wall of the tower 6 is also enhanced. On this basis, through cooperation with plate 1 and plate 2, a stable cross-support system is formed, effectively improving the overall stiffness and structural stability of the tower 6 under complex wind loads.

[0023] In another embodiment, the two connecting ends of sheet 1 and sheet 2 are provided with connecting portions 14 extending vertically outward, and the two ends of the transverse connecting body 5 reach the connecting portions 14. A connecting hole 15 is provided between the connecting portions 14 and the two ends of the transverse connecting body 5.

[0024] like Figures 1 to 3As shown, the two connecting ends of plate 1 and plate 2 are transformed into planar connecting areas by setting outwardly extending vertical connecting parts 14. This not only improves processing accuracy but also significantly improves alignment efficiency during assembly. The two ends of the transverse connecting body 5 extend to the connecting parts 14, ensuring a complete contact surface between them. This allows the load to be evenly transmitted along the vertical direction, effectively reducing the risk of stress concentration due to incomplete contact. The connecting holes 15, through radial constraint connection using bolts and other fasteners, prevent gaps from forming at the connection point under wind load, thereby ensuring the stability and durability of the overall structure of the tower 6. The hollow tube structure of the transverse connecting body 5 and the longitudinal connecting components 4 work together to form a highly efficient support system, significantly improving the radial strength and overall rigidity of the tower 6.

[0025] like Figure 1 , Figure 2 As shown, in another embodiment, the transverse connecting body 5 is a rectangular hollow tube, in which two second inner lining plates 16 are provided on the left and right sides in the cavity. The inner ends of the two second inner lining plates 16 reach the longitudinal connecting groove 7. The outer ends of the two second inner lining plates 16 are welded to the cavity walls at both ends of the hollow cavity of the transverse connecting body 5, and through holes 17 communicating with the connecting holes 15 are provided.

[0026] By optimizing the internal structure of the transverse connector 5, the overall stiffness and connection reliability of the tower 6 under complex wind loads are significantly improved. The transverse connector 5 adopts a rectangular hollow tube design, which not only reduces weight but also provides the necessary space for internal reinforcement, enabling a reasonable distribution of structural strength under limited material conditions. The two second inner lining plates 16 set in the hollow cavity serve as core reinforcing elements, which can evenly distribute the load transmitted from the plate connection end to the entire connector, avoiding buckling deformation caused by local stress concentration, thereby maintaining the geometric stability of the circular cross-section of the tower 6. The second inner lining plate 16 ensures that it forms a rigid coupling with the longitudinal support 9, enhancing the tower 6's coordinated support capacity in the radial and axial directions. This significantly improves the fatigue resistance and long-term durability of the connector. In addition, the through hole 17 allows the connecting bolts to pass directly through the inner lining plate and the connection part 14, eliminating assembly gaps, improving the sealing and shear resistance of the connection interface, and ensuring that the tower 6 maintains its structural integrity under complex wind loads.

[0027] In another embodiment, two partition cavities 18 are formed between the front and rear sides of the two second inner lining plates 16 and the cavity wall of the transverse connecting body 5.

[0028] The partition cavity 18 improves the reliability and structural stability of the support assembly. The second inner liner plate 16 not only achieves left-right separation, but also forms two independent partition cavities 18 in front and behind by cooperating with the cavity wall, which are the position spaces of the locking block 8.

[0029] like Figure 2 , Figure 5 As shown, in another embodiment, the locking blocks 8 are two symmetrical locations, and are respectively fixed to the cavity walls of the front and rear partition cavities 18. The longitudinal support body 9 has two vertical grooves 19 at the position of the longitudinal connecting groove 7, and the two vertical grooves 19 communicate with the front and rear partition cavities 18 respectively. The first inner lining plate 10 is two symmetrical locations, and each of the two first inner lining plates 10 has a guide hole 11. A secondary reinforcing rod 12 is slidably inserted into each of the two guide holes 11. The inner ends of the two secondary reinforcing rods 12 are close to the center of the tower 6 and have a bent part 20. The locking block 8 has an inclined extrusion surface 21. After the bent part 20 bends into the vertical groove 19 and is extruded by the inclined extrusion surface 21, it pushes the secondary reinforcing rod 12 radially so that the outer end of the secondary reinforcing rod 12 is pressed against the cavity wall of the tower 6.

[0030] like Figures 4 to 6 As shown, the locking block 8 is a key component used to provide radial thrust. It can be understood as an interference component specifically designed to provide thrust for the secondary reinforcing rod 12. The bent portion 20 of the secondary reinforcing rod 12 is a special structure used to cooperate with the inclined extrusion surface 21 to achieve force transmission. Its purpose is to efficiently convert the extrusion thrust contacting the locking block 8 into radial thrust moving towards the cylinder wall. Specifically, the locking block 8 is fixed to the cavity wall of the partition cavity 18. Based on the symmetrical layout of the partition cavity 18, it is ensured that the locking blocks 8 on both sides can act synchronously, so that the radial support force is uniformly transmitted along the circumference of the tower cylinder 6. The front and rear vertical grooves 19 opened on the longitudinal support body 9 provide a precise working channel for the inclined extrusion surface 21 of the locking block 8 according to the spatial distribution of the partition cavity 18, ensuring that the bent portion 20 of the secondary reinforcing rod 12 can accurately enter the vertical groove 19, ensuring the reliability and path consistency of the extrusion process. The guide hole 11 on the first inner liner plate 10 provides a stable guide path for the secondary reinforcing rod 12, preventing the rod from deviating during the pushing process and ensuring the effective transmission of radial thrust. The curved part 20, in conjunction with the inclined extrusion surface 21, converts the axial movement of the locking block 8 into radial thrust based on the inclined surface conversion principle. This causes the outer end of the secondary reinforcing rod 12 to be evenly pressed against the wall of the tower 6 cavity, significantly enhancing the radial strength of the tower 6 and effectively suppressing elastic deformation and stress fluctuations at the connection interface under wind load. This installation method, which uses the transverse connecting body 5 to assemble the sheet 1 and sheet 2 together, and combines this installation method with the quick-installation longitudinal support body 9, improves assembly efficiency.

[0031] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.

[0032] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A segmented wind turbine tower, characterized in that, The device includes a first plate (1), a second plate (2), and a quick-connect mechanism. The quick-connect mechanism includes a transverse connecting component (3) and a longitudinal connecting component (4). The transverse connecting component (3) includes a transverse connecting body (5), through which the first plate (1) and the second plate (2) are joined together to form a circular tower (6). A longitudinal connecting groove (7) is provided on the transverse connecting body (5), and a locking block (8) is provided on the transverse connecting body (5) near the longitudinal connecting groove (7). The longitudinal connecting component (4) includes a longitudinal support body (9). The longitudinal support (9) is snapped into the longitudinal connecting groove (7) and crosses with the transverse connecting body (5). The longitudinal connecting assembly (4) also includes a first inner liner plate (10) disposed in the longitudinal support (9). The first inner liner plate (10) has a guide hole (11) and a secondary reinforcing rod (12) is slidably fitted on the guide hole (11). One end of the secondary reinforcing rod (12) is pressed against the locking block (8), and the other end of the secondary reinforcing rod (12) is locked against the cavity wall of the tower (6) under the pressure of the locking block (8).

2. A segmented wind turbine tower according to claim 1, characterized in that, The first piece (1) and the second piece (2) are equal semi-circular arc structures, and their top ends are provided with flange connection parts (13). The top end of the transverse connecting body (5) reaches the top surface of the flange connection part (13), and the bottom end reaches the bottom surface of the first piece (1) and the second piece (2).

3. A segmented wind turbine tower according to claim 2, characterized in that, The longitudinal connecting groove (7) is opened in the middle of the transverse connecting body (5), and the longitudinal support (9) is installed in the longitudinal connecting groove (7) and is perpendicular to the transverse connecting body (5).

4. A segmented wind turbine tower according to claim 3, characterized in that, The two connecting ends of the first piece (1) and the second piece (2) are provided with connecting portions (14) extending vertically outward. The two ends of the transverse connecting body (5) reach the connecting portion (14). A connecting hole (15) is provided between the connecting portion (14) and the two ends of the transverse connecting body (5).

5. A segmented wind turbine tower according to claim 4, characterized in that, The transverse connecting body (5) is a rectangular hollow tube. The transverse connecting assembly (3) also includes two second inner lining plates (16) disposed in the hollow cavity of the transverse connecting body (5). The inner ends of the two second inner lining plates (16) reach the longitudinal connecting groove (7), and the outer ends of the two second inner lining plates (16) are welded to the cavity walls at both ends of the hollow cavity of the transverse connecting body (5).

6. A segmented wind turbine tower according to claim 5, characterized in that, The outer ends of the two second inner lining plates (16) are provided with through holes (17) that communicate with the connecting holes (15) on the same side.

7. A segmented wind turbine tower according to claim 6, characterized in that, Two partition cavities (18) are formed between the front and rear sides of the two second inner lining plates (16) and the cavity wall of the transverse connecting body (5).

8. A segmented wind turbine tower according to claim 7, characterized in that, The locking blocks (8) are located symmetrically at both ends and are fixed to the cavity walls of the two partition cavities (18) respectively. The longitudinal support (9) has two vertical grooves (19) at the position of the longitudinal connecting groove (7), and the two vertical grooves (19) communicate with the two partition cavities (18) respectively. The first inner lining plate (10) is located symmetrically at both ends, and each of the two first inner lining plates (10) has a guide hole (11). 1) One of the secondary reinforcing rods (12) is slidably inserted inside. The inner ends of the two secondary reinforcing rods (12) are close to the center of the tower (6) and are provided with a bent part (20). The locking block (8) is provided with an inclined extrusion surface (21). The bent part (20) bends into the vertical groove (19) and is extruded by the inclined extrusion surface (21), which pushes the secondary reinforcing rod (12) to move radially so that the outer end of the secondary reinforcing rod (12) is pressed against the cavity wall of the tower (6).

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