Herringbone ultrahigh wind generating set tower structure

Abstract

The utility model discloses a tower structure of a herringbone ultrahigh wind generating set. The tower structure comprises a tower drum, a plurality of supporting legs and a conversion section, the conversion section is small in upper part and large in lower part and comprises a plurality of conversion arms, the top ends of the conversion arms are folded together to form a butt joint, the bottom ends of the conversion arms are arranged in an outward expanding mode relative to the axis of the tower drum, the conversion section further comprises a plurality of conversion pull rods, and every two adjacent conversion arms are connected together through the conversion pull rods; the bottom of the tower drum is connected with the butt joint, the top ends of the multiple supporting legs are connected with the bottom ends of the multiple conversion arms in a one-to-one correspondence mode and used for supporting the conversion section and the tower drum, and each supporting leg comprises a plurality of standard supporting legs and a bottom supporting leg which are connected in the length direction of the supporting leg; and the top ends of the bottom supporting legs are connected with the bottom ends of the adjacent standard supporting legs above. And the method does not depend on large hoisting equipment any more and can adapt to higher tower assembly requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of tower structures, and particularly relates to a herringbone ultra-high wind turbine tower structure. Background Art

[0002] The tower structure of a wind turbine mainly plays a supporting role. Its main function is to support the mechanical components of the wind turbine, bear the acting force of the wind wheel and the force of the wind acting on the tower, and needs to have sufficient mechanical bearing performance to withstand the bending, shear and torsional loads caused by the wind turbine.

[0003] At present, the main technical routes of wind turbine towers include flexible towers, steel-concrete towers and truss towers. The flexible tower has the characteristics of mature technology and short construction period. However, when facing ultra-high hubs, its economy and transportability are poor, and the safety risk is high. The steel-concrete tower has the characteristics of large structural stiffness, good stability, good corrosion resistance and low maintenance cost. However, it requires high manufacturing precision, high investment in molds and tooling, and long construction period. The truss tower has the characteristics of large structural stiffness, convenient transportation and simple manufacturing. However, it uses a large amount of steel, the installation process is cumbersome, the construction period is long and the later operation and maintenance are complex.

[0004] The large-scale development of wind turbines is an inevitable trend in the future. The larger the impeller diameter, the higher tower support is required. When the hub height exceeds 180m and above, the traditional wind turbine towers and hoisting methods can no longer meet the industry development needs. For example, for flexible towers and steel-concrete towers, they both belong to cylindrical towers. As the wind turbine load increases and the hub height rises, the diameter and wall thickness of the tower barrel will increase significantly, and large cranes are required for hoisting. The large-boom cranes are restricted by the on-site wind force during operation. When the wind force is large, work must be stopped to ensure operation safety, which will affect the project progress and quality. In addition, the large crawler cranes have low transfer efficiency, fast crawler wear, and high requirements for the bearing capacity of roads and hoisting sites. Moreover, considering the rental, maintenance and transfer of large cranes comprehensively, the use cost is relatively high. Furthermore, the hoisting height of the crane also restricts the height of the wind turbine tower. Content of the Utility Model

[0005] Therefore, the technical problem to be solved by the utility model is that the installation of the existing tower structure depends on large hoisting equipment, and the hoisting height of the crane also restricts the height of the wind turbine tower, so as to provide a herringbone ultra-high wind turbine tower structure.

[0006] To solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A chevron-shaped ultra-high wind turbine tower structure, the tower structure comprising a tower barrel, a plurality of legs, and a transition section; the transition section is smaller at the top and larger at the bottom, including a plurality of transition arms, the tops of the plurality of transition arms are joined together to form a docking head, and the bottoms are respectively outwardly extended relative to the axis of the tower barrel. The transition section further includes a plurality of transition tie rods, and two adjacent transition arms are connected together by the transition tie rods; the bottom of the tower barrel is connected to the docking head, and the tops of the plurality of legs are respectively connected to the bottoms of the plurality of transition arms in a position corresponding manner to support the transition section and the tower barrel. Each leg includes a plurality of standard legs connected along its length direction and a bottom leg, and the top of the bottom leg is connected to the bottom of the adjacent standard leg above.

[0008] Further, the transition arm is of a hollow structure, and gaps are symmetrically opened on both sides of the top. Flange structures are provided at the edges of the gaps, and the flange structures protrude from the inner side wall of the transition arm towards the axis of the tower barrel. The gaps of the plurality of transition arms are joined together to form the docking head with a circular cross-section, and a top flange is provided at the top of the docking head. The top flange is fixedly connected to the bottom of the tower barrel, and the flange structures on two adjacent transition arms are joined together.

[0009] Further, the transition arm is of a structure that is larger at the top and smaller at the bottom.

[0010] Further, the transition section further includes an ear plate and a connecting plate. The ear plate is provided at the top of the flange structure, and the ear plate extends beyond the flange structure towards the axis of the tower barrel. Fasteners pass through the connecting plate and the through holes on two adjacent ear plates to fix the two adjacent ear plates together.

[0011] Further, the leg and the corresponding transition arm are connected by a first adapter. The first adapter is a four-way pipe structure, including a top interface connected to the bottom of the transition arm, a bottom interface connected to the top of the leg, and two lateral interfaces. The two lateral interfaces are respectively connected to the ends of two different transition tie rods. The axis of the bottom interface is skewed towards the axis of the tower barrel relative to the axis of the top interface, so that the bottom end of the leg approaches the axis of the tower barrel relative to the bottom end of the corresponding transition arm.

[0012] Further, flange plates are respectively provided at both ends of the standard leg. The flange plate at the bottom end of the standard leg is fixedly connected to either the flange plate at the top end of the bottom leg or the flange plate at the top end of the adjacent standard leg below. The flange plate at the top end of the standard leg is fixedly connected to either the bottom interface or the flange plate at the bottom end of the adjacent standard leg above.

[0013] Further, multiple said standard legs at the same height are connected into a whole by multiple leg tie rods, forming a triangular pyramid or a square pyramid structure.

[0014] Further, it further includes multiple second adapters. The second adapter is a four-way pipe structure, including a second top interface, a second bottom interface, and two second lateral interfaces. The second top interface and the second bottom interface are respectively connected to the corresponding ends of two adjacent said standard legs, and the two lateral interfaces are connected to the corresponding ends of two different said leg tie rods. The second top interface and the second bottom interface are coaxially arranged.

[0015] Further, the length of the standard leg does not exceed 20 m, and the leg tie rod does not exceed 20 mm.

[0016] Further, it further includes a nacelle, a hub, and blades that are all located at the top of the tower barrel.

[0017] The technical solution of the present utility model has the following advantages:

[0018] 1. For the herringbone ultra-high wind turbine tower structure provided by the present utility model, since the leg includes multiple standard legs arranged along its length direction and a bottom leg, and the top end of the bottom leg is connected to the bottom end of the adjacent standard leg above, therefore, the transition section, the tower barrel, the nacelle, the hub, and the blades can be assembled at a lower position first, and then the transition section, the tower barrel, the nacelle, the hub, and the blades are lifted to a certain height by a crane (not an ultra-large crane). Then, the standard legs and the bottom leg are assembled step by step below. Since the tower barrel, the nacelle, the hub, and the blades can be hoisted when the position of the tower is relatively low, a small crane (compared with an ultra-large crane) can be used for operation, and thus the requirement for the site is relatively low. The installation of the tower structure no longer depends on large lifting equipment. Correspondingly, various negative impacts brought by large lifting equipment can be reduced (for example, as the wind turbine load increases and the hub height rises, the crane with a large boom will be restricted by the on-site wind force when working. When the wind force is relatively large, work must be stopped to ensure operation safety, which will affect the project progress and quality. In addition, the transfer efficiency of a large crawler crane is low, the crawler wears quickly, and there are high requirements for the bearing capacity of the road and the lifting site. Moreover, the usage costs such as renting, maintenance, and transfer of large lifting equipment are relatively high). In addition, for the installation of the standard legs and the bottom leg below, a jacking device can be used for jacking. Therefore, the assembly of the tower structure is not restricted by the lifting height of the crane, and thus the assembly of a higher tower can be realized.

[0019] 2. For the herringbone ultra-high wind turbine tower structure provided by the present utility model, the transition arm has a structure that is larger at the top and smaller at the bottom. In this way, it is beneficial to the formation of the flange structure on the transition arm, and at the same time, it is beneficial to optimizing the force transmission path, so that the load of the tower barrel can be better transmitted to the bottom leg.

[0020] 3. The utility model provides a herringbone super-high wind turbine tower structure, in which the conversion section is small at the top and large at the bottom, and includes multiple conversion arms, the top ends of the multiple conversion arms are matched together to form a docking joint, and the bottom ends are respectively arranged to be stretched outward relative to the axis of the tower. The conversion section also includes multiple conversion rods, and two adjacent conversion arms are connected together by the conversion rods. The legs include multiple standard legs connected along their length and a bottom leg, and the top end of the bottom leg is connected to the bottom end of the upper adjacent standard leg. Multiple standard legs at the same height are connected into one by multiple leg rods to form a triangular pyramid or a quadrangular pyramid structure. The lattice tower structure formed in this way can reduce the amount of material used and convert the bending mode of a single component into an axial force mode of the corner component. The legs of the tower are located at the corner of the cross section, far away from the neutral axis, which fully utilizes the strength of the material, and the wind load area of the tower structure is small, which can significantly reduce the wind load acting on the tower.

[0021] 4. The utility model provides a herringbone super-high wind turbine tower structure, in which the legs are connected to the corresponding conversion arms through a first adapter. The first adapter is a four-way pipe structure, including a top interface connected to the bottom end of the conversion arm, a bottom interface connected to the top end of the leg, and two lateral interfaces. The two lateral interfaces are respectively connected to the ends of two different conversion rods. The axis of the bottom interface is tilted toward the axis of the tower relative to the axis of the top interface, so that the bottom end of the leg is closer to the bottom end of the corresponding conversion arm toward the axis of the tower. In this way, the intersection node of the conversion rod, the conversion arm and the leg will have a tendency to expand outward, and the notch joint of the two adjacent conversion arms is subjected to greater force. The application of prestress improves the stress state. At the same time, it can reduce the footprint after the multiple legs are distributed.

[0022] 5. The utility model provides a herringbone super-high wind turbine tower structure, in which the length of the standard legs does not exceed 20m, and the leg pull rods do not exceed 20mm, so that the size of the structural parts can meet the requirements of conventional transportation, effectively solving the problem that the overall structure of traditional large wind turbine towers is too high and too heavy to be transported, and effectively controlling the transportation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a three-dimensional schematic diagram of a tower structure with three legs in an embodiment of the present utility model;

[0025] Figure 2 It is a three-dimensional schematic diagram of the tower structure with four legs in the embodiment of the present utility model;

[0026] Figure 3 It is a three-dimensional combined schematic diagram of the conversion section and the first adapter in the embodiment of the present invention;

[0027] Figure 4 is Figure 3 an enlarged view of position C in

[0028] Figure 5 It is a partial front view of the bottom leg in the embodiment of the present utility model;

[0029] Figure 6 is Figure 5 an enlarged view of position D in

[0030] Figure 7 It is a front view of the tower foundation and part of the bottom legs in the embodiment of the present utility model;

[0031] Figure 8 It is a three-dimensional schematic diagram of the second adapter in the embodiment of the present utility model;

[0032] Figure 9 It is a front view of the conversion section, the standard legs of the first stage, the installation platform and the tower foundation in the embodiment of the present utility model;

[0033] Figure 10 is in Figure 9 a front view after assembling the lifting device, the tower barrel, the nacelle and the blades in

[0034] Figure 11 is in Figure 10 a front view after assembling the standard legs of the second stage in

[0035] Figure 12 is in Figure 11 a front view where the standard legs of the second stage are abutted against the transition platform and held by the clamping device in

[0036] Figure 13 is in Figure 12 a front view after assembling the bottom legs in

[0037] Explanation of reference numerals:

[0038] 1. Conversion section; 2. Leg; 3. Tower foundation; 4. Tower barrel; 5. Nacelle; 6. Blade; 7. Conversion arm; 8. Conversion tie rod; 9. First adapter; 10. Notch; 11. Top flange; 12. Flange structure; 13. Ear plate; 14. Connecting plate; 15. Anchor bolt; 16. Anchor plate; 18. Standard leg of the first stage; 20. Ground track; 21. Installation platform; 22. Clamping device; 23. Mobile cart; 24. Jacking device; 25. Standard leg of the second stage; 26. Transition platform; 27. Second adapter; 28. Leg tie rod; A. Standard leg; B. Bottom leg. Detailed implementation manners

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] Such as Figures 1 to 13As shown in the figure, the utility model provides a chevron-shaped ultra-high wind turbine tower structure (hereinafter referred to as the tower structure). This tower structure is applicable to the impellers of wind turbines with a hub height exceeding 180m, and includes a tower barrel 4, a plurality of legs 2, and a transition section 1. The transition section 1 is smaller at the top and larger at the bottom, and includes a plurality of transition arms 7. The tops of the plurality of transition arms 7 are joined together to form a docking head, and the bottoms are respectively arranged to flare out relative to the axis of the tower barrel 4. The transition section 1 further includes a plurality of transition tie rods 8, and two adjacent transition arms 7 are connected together by the transition tie rods 8. The bottom of the tower barrel 4 is connected to the docking head. The tops of the plurality of legs 2 are respectively connected to the bottoms of the plurality of transition arms 7 in a position corresponding manner, and are used to support the transition section 1 and the tower barrel 4. Each leg 2 includes a plurality of standard legs A connected along its length direction and a bottom leg B, and the top of the bottom leg B is connected to the bottom of the adjacent standard leg A above.

[0044] For the chevron-shaped ultra-high wind turbine tower structure provided by the utility model, since the leg 2 includes a plurality of standard legs A connected along its length direction and a bottom leg B, and the top of the bottom leg B is connected to the bottom of the adjacent standard leg A above, therefore, the transition section 1, the tower barrel 4, the nacelle 5, the hub, and the blade 6 can be assembled at a relatively low position first, and then the transition section 1, the tower barrel 4, the nacelle 5, the hub, and the blade 6 are lifted to a certain height by a crane (not an ultra-large crane). Then, the standard legs A and the bottom leg B are assembled step by step below. Since the tower barrel 4, the nacelle 5, the hub, and the blade 6 can be hoisted when the position of the tower is relatively low, a small crane (compared with an ultra-large crane) can be used for operation, and thus the requirements for the site are relatively low. The installation of the tower structure no longer overly depends on large lifting equipment, and various negative impacts brought by large lifting equipment can be reduced (for example, as the wind turbine load increases and the hub height increases, the crane with a large boom will be restricted by the on-site wind force when working. When the wind force is relatively large, work must be stopped to ensure operation safety, which will affect the project progress and quality. Moreover, the transfer efficiency of large crawler cranes is low, the crawler wears quickly, and there are relatively high requirements for the bearing capacity of roads and lifting sites. In addition, the usage costs such as renting, maintaining, and transferring large lifting equipment are relatively high). In addition, for the installation of the standard legs A and the bottom leg B below, a jacking device 24 can be used for jacking. Therefore, the assembly of the tower structure will not be restricted by the working height of the crane, and the assembly of a higher tower can be realized.

[0045] Furthermore, the tower barrel 4, the transition arm 7, and the leg 2 are all hollow structures.

[0046] Furthermore, as Figures 4 to 6As shown, on both sides of the top end of the conversion arm 7, gaps 10 are symmetrically provided. On the edge of the gap 10, a flange structure 12 is provided. The flange structure 12 extends towards the axis direction of the tower barrel 4 and protrudes from the inner side wall of the conversion arm 7. The gaps 10 of multiple conversion arms 7 are aligned to form a docking head with a circular cross-section, and a top flange 11 is provided at the top of the docking head. The top flange 11 is fixedly connected to the bottom of the tower barrel 4 by welding, and the flange structures 12 on adjacent two conversion arms 7 are aligned and welded together.

[0047] Further, the conversion arm 7 has a structure that is larger at the top and smaller at the bottom. In this way, it is beneficial to the formation of the flange structure 12, and at the same time, it is beneficial to optimize the force transmission path, so that the load of the tower barrel 4 can be better transmitted to the bottom leg B.

[0048] Further, as Figures 4 to 6 shown, the conversion section 1 further includes multiple ear plates 13 and multiple connecting plates 14. An ear plate 13 is provided at the top of each flange structure 12, and the ear plate 13 extends beyond the flange structure 12 towards the axis direction of the tower barrel 4. A fastener (not shown) passes through the connecting plate 14 and the through holes on adjacent two ear plates 13 to fix the adjacent two ear plates 13 together.

[0049] Further, as Figure 3 and Figure 5 shown, between the leg 2 and the corresponding conversion arm 7, they are connected by a first adapter 9. The first adapter 9 is a four-way pipe structure, including a top interface connected to the bottom end of the conversion arm 7, a bottom interface connected to the top end of the leg 2, and two lateral interfaces. The two lateral interfaces are respectively connected to the ends of two different conversion tie rods. The axis of the bottom interface is skewed towards the axis direction of the tower barrel 4 relative to the axis of the top interface, so that the bottom end of the leg 2 approaches the axis direction of the tower barrel 4 relative to the bottom end of the corresponding conversion arm 7. In this way, there is a tendency for the cross nodes of the conversion tie rod 8, the conversion arm 7, and the leg 2 to expand outwards, and the force at the docking part of the gaps of adjacent two conversion arms 7 is relatively large. The application of prestress improves the stress state. At the same time, it can reduce the floor area after the distribution of multiple legs 2.

[0050] Further, flange plates are respectively provided at the upper and lower ends of the standard leg A. The flange plate at the bottom end of the standard leg A is fixedly connected to either the flange plate at the top end of the bottom leg B or the flange plate at the top end of the adjacent standard leg 2 below. The flange plate at the top end of the standard leg A is fixedly connected to either the bottom interface or the flange plate at the bottom end of the adjacent standard leg A above.

[0051] Further, the standard legs A at the same height are connected into one body by a leg tie rod 28 (as Figure 13 shown), and the leg tie rod 28 is connected to the standard leg A through a second adapter 27, so that multiple legs 2 form a triangular pyramid structure or a quadrangular pyramid structure. As Figure 8 andFigure 13 As shown, the second adapter 27 is a four-way pipe structure, including a second top interface, a second bottom interface, and two second lateral interfaces. The second top interface and the second bottom interface are respectively connected to the corresponding ends of two standard legs A adjacent along the length direction of the leg 2. The two lateral interfaces are connected to the corresponding ends of two adjacent leg tie rods 28. The second top interface and the second bottom interface are coaxially arranged.

[0052] Furthermore, the length of the standard leg A does not exceed 20m, and / or the leg tie rod 28 does not exceed 20mm. In this way, it is beneficial to meet the requirements of conventional transportation, effectively solves the problem that the overall structure of the traditional large fan tower is too high and overweight and cannot be transported, and effectively controls the transportation cost.

[0053] Furthermore, the tower foundation 3 is located below the bottom leg B and below the ground. The tower foundation 3 includes prestressed anchor bolts 15 and anchor plates 16 embedded in the ground.

[0054] Furthermore, the conversion section 1 is pre-assembled in the factory. When pre-assembling, a thin gasket is placed between the conversion tie rod 8 and the flange of the first adapter 9 and removed during on-site installation before installation. By applying prestress to the bolts during installation, the bolts are kept in a tensioned state.

[0055] Furthermore, the aforementioned flange can be an inner flange or an outer flange.

[0056] Furthermore, the jacking device 24 used in the installation process of the tower structure is located at the bottom of the tower. The jacking device 24 includes a transition platform 26 and a plurality of ground tracks 20. The moving vehicle 23 of the jacking device 24 can move on the ground tracks 20 and can be accurately positioned and braked. The jacking device 24 also includes a clamping device 22 located at the top. The clamping device 22 is used to clamp the leg 2 during jacking. The plurality of ground tracks 20 are arranged at intervals radially around the vertical axis of the tower barrel 4 and point outward from the axis to the leg 2. The transition platform 26 can move along the ground tracks 20 and can be accurately positioned and braked. The transition platform 26 and the installation platform 21 are used for temporary support during the tower assembly process.

[0057] In addition, the following content needs to be supplemented and explained:

[0058] The lattice-type column tower structure of the V-shaped ultra-high wind turbine generator set provided by the utility model can use the jacking device 24 to realize continuous jacking and installation of the tower structure. The tower structure adopts a lattice-type column, which can reduce the material consumption and convert the bending mode of a single member into the axial force acting mode of the corner members. The legs 2 of the tower are located at the corner of the cross-section and are far from the central axis, making full use of the strength of the material. In addition, the tower structure with a lattice-type column has a small wind load area, which can significantly reduce the wind load acting on the tower. Under the action of the load, the cross joints of the conversion tie rods 8, the conversion arms 7 and the legs 2 tend to expand outwards, and the force at the joint of the two gaps 10 of the adjacent two conversion arms 7 is relatively large. The application of prestress improves the stress state. Moreover, the tower structure provided in this embodiment has high construction efficiency, can ensure the construction quality, and can also reduce the construction measure cost.

[0059] The following introduces an installation method for a V-shaped ultra-high wind turbine generator set tower structure provided in this embodiment, including the following steps:

[0060] Prepare the tower foundation 3 according to the design requirements; specifically, determine the size of the tower foundation 3 based on the size and weight of the tower structure. The tower foundation 3 is located below the ground. At the same time, it is necessary to prepare the ground foundation required for installation (such as the foundation required for the installation platform 21) and multiple ground tracks 20 required for the movement of the jacking device 24. The number of the ground tracks 20 is the same as the number of the legs 2. The multiple ground tracks 20 are arranged radially and extend radially outwards from the center of the tower barrel 4;

[0061] Assemble the installation platform 21, and the vertical axis of the installation platform 21 coincides with the vertical axis of the tower barrel 4;

[0062] Assemble the conversion section 1 on the ground (when assembling, first complete the docking of multiple conversion arms 7, and use the connecting plate 14 and fasteners (such as bolts) to fix the adjacent two ear plates 13 together, and then connect the two ends of the conversion tie rod 8 to the horizontal interfaces on the first adapter 9 respectively. Specifically, the flange at the end of the conversion tie rod 8 is fixedly connected to the flange at the end of the horizontal interface);

[0063] Lift the conversion section 1 and place it on the installation platform 21;

[0064] Use a crane to lift the first-stage standard leg 18 (as shown in Figure 9 ), and assemble the first-stage standard leg 18 on the bottom interface of the first adapter 9 at the bottom end of the conversion arm 7; At this point, the assembled structure is as shown in Figure 9 ;

[0065] Use a crane to hoist the tower barrel 4, the nacelle 5 and the blades 6 onto the conversion section 1 in sequence. At this point, the assembled structure is as shown in Figure 10 ;

[0066] The crane left the site;

[0067] Install multiple lifting devices 24, place the mobile vehicle 23 of the lifting device 24 on the ground track 20, make the lifting device 24 close to the corresponding first-level standard support leg 18, and make the holding device 22 of the lifting device 24 hold the first-level standard support leg 18 tightly to keep the position of the lifting device 24 immovable, such as Figure 10 As shown;

[0068] The lifting device 24 is activated to lift the standard legs 18 and above of the first stage so as to install the standard legs A of the next stage;

[0069] Remove the installation platform 21;

[0070] Assemble the second-stage standard legs 25 at the bottom of the first-stage standard legs 18, as shown in FIG. Figure 11 As shown;

[0071] Move the transition platform 26 to the position corresponding to the horizontal projection of the second-stage standard legs 25, so that the bottom end of the second-stage standard legs 25 is placed on the transition platform 26. Figure 12 As shown;

[0072] Release the gripping device 22 from the standard legs 18 of the first stage, and move the lifting device 24 outward along the ground track 20 to approach the standard legs 25 of the second stage;

[0073] The holding device 22 holds the second-stage standard legs 25 tightly. At this point, the assembled structure is as follows: Figure 12 As shown,

[0074] Start the lifting device 24 to lift the second-stage standard support leg 25 and the above part so as to install the next-stage standard support leg A;

[0075] Repeat the above installation steps for standard legs A until all standard legs A are installed;

[0076] Install the bottom leg B to the bottom end of the standard leg A at the end of the stage. The assembled structure is as follows: Figure 13 As shown;

[0077] Remove the lifting device 24.

[0078] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A herringbone super-high wind turbine tower structure, characterized in that: The tower structure includes a tower (4), a plurality of legs (2), and a conversion section (1); the conversion section (1) is smaller at the top and larger at the bottom, and includes a plurality of conversion arms (7), the top ends of the plurality of conversion arms (7) are matched together to form a docking joint, and the bottom ends are respectively arranged outward relative to the axis of the tower (4); the conversion section (1) also includes a plurality of conversion rods (8), and two adjacent conversion arms (7) are connected together by the conversion rods (8); the bottom of the tower (4) is connected to the docking joint, and the top ends of the plurality of legs (2) are respectively connected to the bottom ends of the plurality of conversion arms (7) in a one-to-one position correspondence, for supporting the conversion section (1) and the tower (4), and each leg (2) includes a plurality of standard legs (A) connected along its length direction and a bottom leg (B), and the top end of the bottom leg (B) is connected to the bottom end of the adjacent standard leg (A) above.

2. The herringbone super-high wind turbine tower structure according to claim 1, characterized in that: The conversion arm (7) is a hollow structure, with notches (10) symmetrically provided on both sides of the top, and a flange structure (12) provided on the edge of the notch (10), the flange structure (12) extending toward the axial direction of the tower (4) and protruding from the inner side wall of the conversion arm (7), the notches (10) of a plurality of the conversion arms (7) are matched to form a butt joint with a circular cross section, and a top flange (11) is provided on the top of the butt joint, the top flange (11) is fixedly connected to the bottom of the tower (4), and the flange structures (12) on the two adjacent conversion arms (7) are matched and fixed together.

3. The herringbone super-high wind turbine tower structure according to claim 2, characterized in that: The conversion arm (7) has a structure that is larger at the top and smaller at the bottom.

4. The herringbone super-high wind turbine tower structure according to claim 3, characterized in that: The conversion section (1) further includes an ear plate (13) and a connecting plate (14), wherein the ear plate (13) is arranged on the top of the flange structure (12), and the ear plate (13) extends toward the axial direction of the tower (4) and exceeds the flange structure (12), and a fastener passes through the through holes on the connecting plate (14) and the two adjacent ear plates (13) to fix the two adjacent ear plates (13) together.

5. The herringbone super-high wind turbine tower structure according to claim 1, characterized in that: The support leg (2) is connected to the corresponding conversion arm (7) via a first adapter (9). The first adapter (9) is a four-way pipe structure, including a top interface connected to the bottom end of the conversion arm (7), a bottom interface connected to the top end of the support leg (2), and two transverse interfaces. The two transverse interfaces are respectively connected to the ends of two different conversion rods (8). The axis of the bottom interface is tilted relative to the axis of the top interface toward the axis of the tower (4), so that the bottom end of the support leg (2) is closer to the bottom end of the corresponding conversion arm (7) toward the axis of the tower (4).

6. The herringbone super-high wind turbine tower structure according to claim 5, characterized in that: Flanges are provided at both ends of the standard leg (A), and one of the flanges at the bottom end of the standard leg (2) is fixedly connected to the flange at the top end of the bottom leg (B) and the flange at the top end of the adjacent standard leg (A) below, and one of the flanges at the top end of the standard leg (A) is fixedly connected to the bottom interface and the flange at the bottom end of the adjacent standard leg (A) above.

7. The herringbone super-high wind turbine tower structure according to claim 6, characterized in that: A plurality of standard legs (A) of the same height are connected as a whole through a plurality of leg tie rods (28) to form a triangular pyramid structure or a quadrangular pyramid structure.

8. The herringbone super-high wind turbine tower structure according to claim 7, characterized in that: It also includes a plurality of second adapters (30), the second adapters (30) are four-way tube structures, including a second top interface, a second bottom interface, and two second lateral interfaces, the second top interface and the second bottom interface are respectively connected to the corresponding ends of the two adjacent standard legs (A) along the length direction of the leg (2), the two lateral interfaces are connected to the corresponding ends of the two adjacent leg pull rods (28), and the second top interface and the second bottom interface are coaxially arranged.

9. The herringbone super-high wind turbine generator tower structure according to claim 7, characterized in that: The length of the standard outrigger (A) does not exceed 20m, and / or the length of the outrigger tie rod (28) does not exceed 20mm.

10. The herringbone super-high wind turbine tower structure according to claim 1, characterized in that: It also includes a nacelle (5), a hub and blades (6) all located on the top of the tower (4).

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