Lattice type wind power tower and construction method

Abstract

The invention relates to the field of wind power facilities, and discloses a lattice type wind power tower and a construction method. The lattice type wind power tower comprises a first lattice section, a switching section and a second lattice section which are arranged from top to bottom, and the switching section is suitable for switching transition of the first lattice section and the second lattice section. Specifically, an adapter is used as a connection foundation, and a steering sleeve is used as a steering force guiding foundation of steel strands in corner column components in a first lattice section and a second lattice section; according to the connecting structure, the steps and the steering sleeve are fixedly configured, the hasp pieces are fixedly connected with the steel strand, at least two sets of steps and hasp pieces are correspondingly hasped, the steering part of the steel strand is located in the bending part of the steering sleeve, and therefore the purpose that the steel strand and the bending part are bent and arranged in a steering mode in a conformal mode is achieved. By means of the structure, steering slope changing between the two sections of the lattice tower can be achieved, prestress of the steel strands in the whole tower can be reasonably distributed, stress is prevented from being concentrated on the switching section, and the node design effectively meets the requirement for bearing capacity.

Description

Technical Field

[0001] The present invention relates to the field of wind power facilities, and in particular to a lattice-type wind power tower and a construction method thereof. Background Art

[0002] As a mechanical component supporting the upper power generation facilities, the wind turbine tower needs to absorb and transmit the gravity load of the power generation facilities, withstand the force of the wind rotor and the force of the wind acting on the wind turbine tower, such as bending moment, thrust and torsion. The wind turbine tower must also have sufficient fatigue strength to withstand the vibration load caused by the wind rotor, etc. It plays a very important role in the wind turbine system.

[0003] For different wind speeds, wind turbine towers have different structural selections and working characteristics. Among them, the lattice wind turbine tower is a high tower suitable for low wind speed areas. In related technologies, its tower structure system is mainly composed of a steel tower frame, a transition section and a top circular tube. The load on the lattice wind turbine tower is mainly composed of the load transmitted by the wind rotor at the top of the tower and the wind load borne by the tower itself. The steel tower frame and the transition section usually adopt prestressed steel structure to fully cope with the load on the lattice tower. The lattice tower is unreasonable in structure at the transition section, and the internal prestress distribution has defects. In the actual working stage, there is stress concentration at the transition section, which makes it difficult for the lattice tower to meet the bearing capacity requirements. Summary of the Invention

[0004] In view of this, the present invention provides a solution to the technical problem in the related art that the lattice tower has an unreasonable structure at the transition section, the internal prestress distribution is defective, and during the actual working stage, stress concentration occurs at the transition section, which makes it difficult for the lattice tower to meet the load-bearing capacity requirements; In a first aspect, the present invention provides a lattice-type wind turbine tower, comprising a first lattice segment, a transition segment, and a second lattice segment arranged from top to bottom, wherein the transition segment is suitable for transitioning between the first lattice segment and the second lattice segment; Any lattice segment is provided with a corner column component, and all of the corner column components are provided with steel strands; The transfer section includes a transfer seat, a steering sleeve, and a connecting structure. The steering sleeves are provided in plurality and are installed on the transfer seat at intervals. The steel strand is passed through the steering sleeves and fixedly assembled in the steering sleeves through the connecting structure. The connecting structure includes at least two steps and at least two fasteners, any one step is fixedly configured with the steering sleeve, any one fastener is fixedly connected with the steel strand, and the step and the fasteners are correspondingly fastened; the steering sleeve has a bending portion, and the connecting structure is arranged on the inner side of the bending portion so that the steel strand in the bending portion can be bent and turned in a manner conforming to the bending portion.

[0005] This structure of the lattice-type wind turbine tower establishes a transition connection between the first lattice section and the second lattice section through a transition section. Specifically, the transition seat serves as the connection foundation, and the steering sleeve serves as the steering force guide for the steel strands in the corner column components of the first and second lattice sections. For the connection structure, the step and the steering sleeve are fixedly configured, and the fasteners are fixedly connected to the steel strands. At least two groups of steps and fasteners are correspondingly fastened, so that the steering portion of the steel strands is located within the bending portion of the steering sleeve, thereby achieving the purpose of bending and steering the steel strands in a manner that conforms to the bending portion. This structure can achieve a steering slope change between the two sections of the lattice tower, so that the prestress of the steel strands inside the entire tower can be reasonably distributed, avoiding stress concentration in the transition section, and the node design effectively meets the bearing capacity requirements.

[0006] In an optional embodiment, the connecting structure includes a first step, a first fastener, a second step and a second fastener, at least part of the first step and the second step are respectively constructed and arranged in the steering sleeve, the first step and the second step are spaced apart, the first fastener and the second fastener are respectively configured to slide with the steel wire rope, the first fastener and the second fastener are spaced apart, the first step is snap-connected with the first fastener, and the second step is snap-connected with the second fastener.

[0007] The lattice-type wind turbine tower of this structure has a buckle formed by the first step and the first buckle piece, and another buckle formed by the second step and the second buckle piece. The two buckles are arranged at intervals, and the bent portion of the steering sleeve can be placed between the two buckles. The two buckles arranged at the front and rear ends are used to constrain the steering part of the steel strand in the bent portion of the steering sleeve, which can realize two turns of the steel strand, avoid friction damage between the steel strand and the inner wall of the steel pipe, achieve a reasonable steering slope change design, promote the reasonable distribution of the prestress of the steel strand, and avoid stress concentration.

[0008] In an optional embodiment, the extension plane of the first step and the extension plane of the second step are arranged to intersect at a first angle; the first angle is set to be greater than 0° and less than or equal to 8°.

[0009] In an optional embodiment, the adapter seat is configured as a spliced ​​regular polygon structure, and the adapter seat includes a first seat body, a second seat body and a third seat body, which are fixedly spliced ​​together to form the adapter seat; at least one steering sleeve is configured on any seat body.

[0010] In an optional embodiment, the transfer section further includes a first transition piece and a second transition piece, the steering sleeve is fixedly connected between the first transition piece and the second transition piece, the first transition piece is fixedly connected to the corner column component of the first lattice segment at the upper end of the transfer seat, and the second transition piece is fixedly connected to the corner column component of the second lattice segment at the lower end of the transfer seat.

[0011] In an optional embodiment, the lattice wind turbine tower further includes a steel tower section and a fixed foundation, the steel tower section is fixedly configured at the upper end of the first lattice section, the fixed foundation is suitable for being fixed to the ground side, and the second lattice section is configured at the upper end of the fixed foundation.

[0012] The lattice-type wind turbine tower also includes an assembly section, which is arranged between the steel tower section and the first lattice section. The assembly section includes an assembly seat, a first connecting member and a second connecting member. The first connecting member is fixedly connected to the inner annular cavity of the assembly seat, the first connecting member is fixedly configured with the steel tower section, the second connecting member is fixedly connected to the side of the assembly seat facing the first lattice section, the second connecting member is fixedly connected to the corner column component of the first lattice section, the second connecting member is correspondingly configured, and the upper end node of the steel strand is fixedly configured with the anchor position of the upper end of the second connecting member.

[0013] In an optional embodiment, the first lattice segment is provided with a first web member structure, the first web member structure is arranged between adjacent corner column components in the first lattice segment, and the first web member structure is configured as a single diagonal bracing structure.

[0014] In an optional embodiment, the second lattice segment is provided with a second web member structure, which is arranged between adjacent corner column components in the second lattice segment, and the second web member structure is configured as a double diagonal brace and transverse brace structure.

[0015] In an optional embodiment, the corner column component includes a first tube body, a second tube body and a structural layer, the second tube body is sleeved in the first tube body at intervals, the structural layer is filled and arranged between the first tube body and the second tube body, and the steel strand is passed through the second tube body.

[0016] In an optional embodiment, six corner column components are respectively configured on the first lattice segment and the second lattice segment, and six bundles of steel strands are provided, and any bundle of the steel strands is arranged through a corner column component of the first lattice segment and a corner column component of the second lattice segment.

[0017] In an optional embodiment, the steering sleeve is welded or hot-bent in sections to form the bent portion.

[0018] In a second aspect, the present invention further provides a construction method for a lattice-type wind turbine tower, comprising: A lattice-type wind turbine tower is provided, comprising a first lattice segment, a transition segment, and a second lattice segment, wherein the transition segment is adapted to transition between the first lattice segment and the second lattice segment; any lattice segment is configured with a corner column component, and all of the corner column components are provided with steel strands; the transition segment comprises an adapter seat, a steering sleeve, and a connecting structure, wherein the connecting structure comprises at least two steps and at least two fasteners, wherein any step is fixedly configured with the steering sleeve, and any fastener is fixedly connected with the steel strand, and the step and the fastener are correspondingly fastened; the steering sleeve has a bent portion; First, build the second lattice section, the transition section and the first lattice section from bottom to top, then pass the steel strands through the whole, place the fasteners fixedly connected to the steel strands in the bending part of the steering sleeve to overlap with the step, so that the steel strands in the bending part can bend and turn in a conformal manner with the bending part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a lattice-type wind power tower provided by the present invention; Figure 2 A cross-sectional view of a lattice section in a lattice-type wind power tower provided by the present invention; Figure 3 A schematic structural diagram of the assembly section of the lattice-type wind power tower provided by the present invention; Figure 4 This is a structural diagram of the transfer section in the lattice-type wind power tower provided by the present invention; Figure 5 This is a schematic diagram of the assembly of the steering sleeve and the connection structure in the lattice-type wind power tower provided by the present invention; Figure 6 This is a schematic diagram of the assembly of the middle step and fasteners of the lattice-type wind power tower provided by the present invention; Figure 7 This is a diagram showing the arrangement of the tower diagonal braces above the blade tip in the lattice-type wind turbine tower provided by the present invention; Figure 8 This is a diagram showing the arrangement of the tower diagonal braces below the blade tip in the lattice-type wind turbine tower provided by the present invention; Description of reference numerals: 1. Steel tower section; 101. Blade clearance area; 2. Assembly section; 201. Assembly seat; 202. First connecting piece; 203. Second connecting piece; 204. Anchoring position; 3. First lattice section; 4. Adapter section; 401. Adapter seat; 4011. First seat body; 4012. Second seat body; 4013. Third seat body; 402. First transition piece; 403. Second transition piece; 404. Steering sleeve; 405. First step; 406. First fastener; 407. Second step; 408. Second fastener; 5. Second lattice section; 6. Fixed foundation; 7. Corner column component; 701. First tube body; 702. Second tube body; 703. Structural layer; 8. Steel strand; 901. First web member structure; 902. Second web member structure. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate description and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include at least one of the features. Furthermore, the term "and / or" used throughout the text encompasses three parallel solutions. For example, "A and / or B" encompasses solution A, solution B, or solutions where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments may be combined, but only if they are achievable by a person of ordinary skill in the art. If a combination of technical solutions contradicts or cannot be implemented, it should be deemed that such a combination does not exist and is not within the scope of protection claimed by the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] The following combination Figures 1 to 8 , describing embodiments of the present invention.

[0025] Figure 1 The figure shows a schematic structural diagram of a lattice wind turbine tower, which includes, from top to bottom, a first lattice segment 3, a transition segment 4, and a second lattice segment 5. The transition segment 4 is adapted to transition between the first lattice segment 3 and the second lattice segment 5. In this embodiment, each lattice segment is configured with a corner column component 7, and all corner column components 7 are equipped with steel strands 8.

[0026] Figure 2 The figure shows a cross-section of a lattice section in a wind turbine tower. The first lattice section 3 and the second lattice section 5 are each equipped with six corner column components 7. Internal prestressing is achieved via steel strands 8, and adjacent corner column components 7 are interconnected using web members. In actual design, blade clearance areas 101 are provided in each lattice section, ensuring a reasonable safe distance between the wind turbine blade tips and the tower wall.

[0027] In view of the different spacing requirements between the corner column components 7 of the lattice wind turbine tower, due to the tip clearance limit, it is difficult for the lattice tower to be directly above the blade tip. The present invention sets a variable slope near the blade tip to meet the reasonable blade tip clearance design.

[0028] In a specific embodiment, the first lattice segment 3 has a small pitch, and the taper of the corner column components 7 in the first lattice segment 3 is small. The second lattice segment 5 has a large pitch, and the taper of the corner column components 7 in the second lattice segment 5 is large. A variable slope node design is configured at the transition segment 4.

[0029] In this embodiment, the adapter section 4 includes an adapter seat 401, a steering sleeve 404 and a connecting structure. There are multiple steering sleeves 404, and the multiple steering sleeves 404 are installed at intervals on the adapter seat 401. The steel strand 8 is arranged in abutment with the steering sleeve 404, and the steel strand 8 is fixedly assembled in the steering sleeve 404 through the connecting structure; the connecting structure includes at least two steps and at least two fasteners, any step is fixedly configured with the steering sleeve 404, any fastener is fixedly connected with the steel strand 8, and the step and the fastener are correspondingly fastened; the steering sleeve 404 has a bending portion, and the connecting structure is arranged on the inner side of the bending portion so that the steel strand 8 in the bending portion can be bent and turned in accordance with the bending portion.

[0030] The lattice-type wind turbine tower of this embodiment establishes a transition connection between the first lattice segment 3 and the second lattice segment 5 through the transition segment 4. Specifically, the transition seat 401 serves as the connection foundation, and the steering sleeve 404 serves as the steering force guide for the steel strands 8 within the corner column components 7 of the first lattice segment 3 and the second lattice segment 5. As for the connection structure, the step is fixedly configured with the steering sleeve 404, and the fastener is fixedly connected with the steel strand 8. At least two groups of steps and fasteners are correspondingly fastened, so that the steering portion of the steel strand 8 is located within the bend of the steering sleeve 404, thereby achieving the purpose of bending and steering the steel strand 8 in a manner that conforms to the bend. This structure can achieve the steering slope change between the two sections of the lattice tower, so that the prestress of the steel strand 8 within the entire tower can be reasonably distributed, avoiding stress concentration in the transition segment 4. The node design effectively meets the load-bearing capacity requirements.

[0031] Figure 5 The figure shows the assembly diagram of the steering sleeve 404 and the connecting structure. Figure 6 Schematic diagram of the assembly of the middle step and the fastener of the lattice-type wind turbine tower provided by the present invention; in an exemplary embodiment, the connection structure includes a first step 405, a first fastener 406, a second step 407 and a second fastener 408, at least part of the first step 405 and the second step 407 are respectively constructed and arranged in the steering sleeve 404, the first step 405 and the second step 407 are spaced apart, the first fastener 406 and the second fastener 408 are respectively slidably configured with the steel strand 8, the first fastener 406 and the second fastener 408 are spaced apart, the first step 405 is snap-connected with the first fastener 406, and the second step 407 is snap-connected with the second fastener 408.

[0032] The first step 405 and the first fastener 406 together form a fastening point, and the second step 407 and the second fastener 408 together form another fastening point. The two fastening points are arranged at intervals, and the bending part of the steering sleeve 404 can be placed between the two fastening points. The two fastening points arranged at the front and rear ends are used to constrain the steering part of the steel strand 8 in the bending part of the steering sleeve 404, which can realize two turns of the steel strand 8, avoid friction damage between the steel strand 8 and the inner wall of the steel pipe, achieve a reasonable steering slope change design, and promote the reasonable distribution of the prestress of the steel strand 8 to avoid stress concentration.

[0033] In an optional embodiment, the extension plane of the first step 405 and the extension plane of the second step 407 intersect at a first angle; the first angle is set to be greater than 0° and less than or equal to 8°. Preferably, the first angle is set to 3° or 4°. The first angle plus 180° equals the bending angle of the bent portion, and the bending angle range is configured to be greater than 180° and less than or equal to 188°.

[0034] In other embodiments, the connection structure may be provided with more than three steps and more than three fasteners to implement a variable slope steering design for adjusting the angle at the bending portion to avoid stress concentration.

[0035] In a specific embodiment, the connecting structure is configured with two steps, the included angle is set to 4°, and the steering angle is 4°; the connecting structure is configured with three steps, wherein the included angle between two adjacent steps is set to 3°, and the other step and its adjacent step can also be rotated 3°, so that the overall steering angle is set to 6°.

[0036] In an optional embodiment, the steering sleeve 404 may be welded or hot-bent in sections to form a bent portion.

[0037] In a specific embodiment, the platform is configured as a plurality of bolt assemblies, and the bolts in each bolt assembly pass through the steering sleeve 404 to form a connection position of the fastener, and the nut members in each bolt assembly are arranged outside the steering sleeve 404 and fix the bolts to the steering sleeve 404; in addition, the part of the bolt member arranged inside the steering sleeve 404 is in tight contact with the fastener, ensuring that the steering of the steel strand 8 can be relatively aligned with the desired position, thereby improving the assembly accuracy.

[0038] In an optional embodiment, if Figure 4 As shown, adapter 401 is configured as a spliced, assembled regular polygonal structure. Adapter 401 comprises a first body 4011, a second body 4012, and a third body 4013, all of which are fixedly assembled to form adapter 401. Each body is provided with at least one steering sleeve 404. With this configuration, adapter 401 utilizes a spliced, assembled structure, capable of being divided into three substructures, transported to the construction site, and secured on-site using high-strength bolts. In an exemplary embodiment, adapter 401 is configured as a regular hexagonal structure, with corner column members 7 positioned at the nodes of the hexagonal structure. Of course, adapter 401 may comprise more bodies, which can be fixedly assembled to form adapter 401.

[0039] In an optional embodiment, if Figure 4 As shown, the transition section 4 further includes a first transition piece 402 and a second transition piece 403. A steering sleeve 404 is fixedly connected between the first and second transition pieces 402, 403. The first transition piece 402 is fixedly connected to the corner column components 7 of the first lattice segment 3 at the upper end of the transition seat 401, while the second transition piece 403 is fixedly connected to the corner column components 7 of the second lattice segment 5 at the lower end of the transition seat 401. The first and second transition pieces 402, 403 can be constructed, for example, using flanges or sleeves. The number of first and second transition pieces 402, 403 corresponds to the number of corner column components 7. For example, the transition section 4 has six flanges on both the upper and lower sides, connected to the six corner column components 7 of the first and second lattice segments 3, 5, respectively.

[0040] In a specific embodiment, Figure 1 As shown, the lattice wind turbine tower further includes a steel tower section 1 and a fixed foundation 6 . The steel tower section 1 is fixedly arranged at the upper end of the first lattice section 3 . The fixed foundation 6 is suitable for being fixed to the ground side. The second lattice section 5 is arranged at the upper end of the fixed foundation 6 .

[0041] In a specific embodiment, Figure 1 As shown, the lattice wind turbine tower also includes an assembly section 2, which is arranged between the steel tower section 1 and the first lattice section 3. The assembly section 2 includes an assembly base 201, a first connecting member 202 and a second connecting member 203. The first connecting member 202 is fixedly connected to the inner annular cavity of the assembly base 201, the first connecting member 202 is fixedly configured with the steel tower section 1, the second connecting member 203 is fixedly connected to the side of the assembly base 201 facing the first lattice section 3, the second connecting member 203 is fixedly connected to the corner column component 7 of the first lattice section 3, the second connecting member 203 is correspondingly configured with the corner column component 7, and the upper end node of the steel strand 8 is fixedly configured with the anchor position 204 at the upper end of the second connecting member 203.

[0042] The prestressed steel strand 8 passes through the interior of the corner column, the upper end of the steel strand 8 is anchored on the upper surface of the assembly section 2 , and the lower end of the steel strand 8 is anchored in the fixed foundation 6 .

[0043] In this embodiment, the prestressed steel strand 8 is diverted within the transition section 4. A diverting sleeve 404 is embedded within the transition section 4, and a first step 405 and a second step 407 are provided within the diverting sleeve 404. As the steel strand 8 is threaded downward, it is threaded along with a first fastener 406 and a second fastener 408. When the steel strand 8 reaches the diverting sleeve 404 embedded within the transition section 4, the first fastener 406 engages with the first step 405, and the second fastener 408 engages with the second step 407. The steps support the fasteners, thereby constraining the steel strand 8's diverting position.

[0044] As a preferred embodiment, an overlapping groove is provided on the platform, and an overlapping protrusion is provided on the fastener. The alignment and assembly of the steel strands 8 are strengthened by the abutment and limiting of the overlapping groove and the overlapping protrusion.

[0045] In an exemplary embodiment, as Figure 2 As shown, the first lattice segment 3 and the second lattice segment 5 are each equipped with six corner column components 7. Six bundles of steel strands 8 are provided, with each bundle of steel strands 8 passing through the corner column components 7 of the first lattice segment 3 and the corner column components 7 of the second lattice segment 5. This structural arrangement, employing six corner column components 7, helps improve the utilization of allowable headroom. Each bundle of steel strands 8 comprises several integrated steel wires.

[0046] In an optional embodiment, if Figure 2 As shown, the corner column component 7 comprises a first tube 701, a second tube 702, and a structural layer 703. The second tube 702 is interspaced and sleeved within the first tube 701. The structural layer 703 is filled and disposed between the first and second tubes 701 and 702, and the steel strands 8 are threaded through the second tube 702. The first and second tubes 701 and 702 can be steel tubes, and the structural layer 703 can be concrete. The first and second tubes 701 and 702 are first coaxially aligned using external positioning, then poured and filled with concrete. The steel strands 8 are threaded through the interior of the second tube 702, forming a complete corner column component 7. This structure, by placing concrete in the hollow interlayer within the corner column component 7, provides a stable external structure. The second tube 702 provides ample assembly space for the steel strands 8, enabling the internal steel strands 8 to effectively provide prestressing for wind turbine tower assembly. This embodiment adopts a steel-concrete composite structure tower, which can give full play to the mechanical advantages of the steel-concrete composite structure, has high bearing capacity and high rigidity, and can effectively cope with the stress concentration problem at the slope change location. Compared with a pure steel structure tower, it has low cost and high reliability.

[0047] Figure 7 The figure shows the arrangement of the tower diagonal bracing above the blade tip. In an optional embodiment, the first lattice segment 3 is provided with a first web member structure 901. The first web member structure 901 is arranged between adjacent corner column components 7 in the first lattice segment 3. The first web member structure 901 is configured as a single diagonal bracing structure.

[0048] Figure 8 The diagram shows the arrangement of the tower diagonal braces below the blade tip. The second lattice segment 5 is provided with a second web member structure 902. The second web member structure 902 is arranged between adjacent corner column components 7 in the second lattice segment 5. The second web member structure 902 is arranged as a double diagonal brace and transverse brace structure.

[0049] In a specific embodiment, the web member structure and the corner column member 7 and the web member structures can be connected by gusset plates, cast steel, or intersecting welding.

[0050] The lattice-type wind power tower provided by the present invention has different diagonal bracing arrangements designed above and below the blade tip according to the size of the corner column spacing, which does not affect the stress reliability and saves construction costs.

[0051] The lattice-type wind power tower provided by the present invention has a prestressed steering design at the blade tip inside the transition section, which is safer and more reliable; and adopts a steel-concrete composite structure tower, which has a low cost and higher reliability.

[0052] This embodiment also provides a construction method for a lattice-type wind turbine tower, which includes: A lattice wind turbine tower is provided, comprising a first lattice segment 3, a transition segment 4, and a second lattice segment 5. The transition segment 4 is adapted to transition between the first lattice segment 3 and the second lattice segment 5. Each lattice segment is provided with a corner column component 7, and all corner column components 7 are provided with steel strands 8. The transition segment 4 comprises an adapter seat 401, a steering sleeve 404, and a connection structure. The connection structure comprises at least two steps and at least two fasteners. Each step is fixedly configured with the steering sleeve 404, and each fastener is fixedly connected to the steel strand 8. The step and the fastener are correspondingly fastened. The steering sleeve 404 has a bent portion. First, build the second lattice segment 5, the transition segment 4 and the first lattice segment 3 from bottom to top, then pass the steel strand 8 through the whole, and place the fastener fixedly connected to the steel strand 8 in the bending portion of the steering sleeve 404 to overlap with the step, so that the steel strand 8 in the bending portion can bend and turn in a conformal manner with the bending portion.

[0053] During the specific construction process, first, a fixed foundation 6 is established on the ground side; Next, the corner column members 7 of the second lattice segment 5 and the second web member structure 902 are connected layer by layer; Then, install the transfer section 4; Next, the corner column members 7 of the first lattice segment 3 and the first web member structure are connected layer by layer; Subsequently, the connecting assembly section 2 is installed; Then, the prestressed steel strand 8 is passed from top to bottom at the anchoring position 204 of the assembly section 2. The first fastener 406 and the second fastener 408 are passed through together with the steel strand 8. At the turning point where the slope changes, they are limitedly connected. The steel strand 8 continues to pass downward and is tensioned and anchored to the fixed foundation 6 at the bottom. After that, install the upper steel tower section 1; Finally, the main engine part of the wind power facility is installed.

[0054] 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 lattice wind turbine tower, characterized in that: It comprises a first lattice segment (3), a transition segment (4) and a second lattice segment (5) arranged from top to bottom, wherein the transition segment (4) is suitable for transitioning the first lattice segment (3) and the second lattice segment (5); Any lattice segment is provided with a corner column component (7), and all the corner column components (7) are provided with steel strands (8); The transfer section (4) includes a transfer seat (401), a steering sleeve (404) and a connecting structure. A plurality of steering sleeves (404) are provided. The plurality of steering sleeves (404) are respectively installed on the transfer seat (401) at intervals. The steel strand (8) is arranged to abut against and penetrate the steering sleeve (404). The steel strand (8) is fixedly assembled in the steering sleeve (404) through the connecting structure. The connection structure includes at least two steps and at least two fasteners, any one step is fixedly configured with the steering sleeve (404), any one fastener is fixedly connected with the steel strand (8), and the step and the fasteners are correspondingly fastened; the steering sleeve (404) has a bending portion, and the connection structure is arranged on the inner side of the bending portion so that the steel strand (8) in the bending portion can be bent and turned in accordance with the bending portion.

2. The lattice wind turbine tower according to claim 1, characterized in that: The connecting structure includes a first step (405), a first fastener (406), a second step (407) and a second fastener (408), at least part of the first step (405) and the second step (407) are respectively constructed and arranged in the steering sleeve (404), the first step (405) and the second step (407) are spaced apart, the first fastener (406) and the second fastener (408) are respectively configured to slide with the steel strand (8), the first fastener (406) and the second fastener (408) are spaced apart, the first step (405) is snap-connected with the first fastener (406), and the second step (407) is snap-connected with the second fastener (408).

3. The lattice wind turbine tower according to claim 2, characterized in that: The extension plane of the first step (405) and the extension plane of the second step (407) are arranged to intersect at a first angle; the first angle is set to be greater than 0° and less than or equal to 8°.

4. The lattice wind turbine tower according to claim 1, characterized in that: The adapter seat (401) is configured as a spliced ​​regular polygonal structure, and the adapter seat (401) comprises a first seat body (4011), a second seat body (4012), and a third seat body (4013), which are fixedly spliced ​​together to form the adapter seat (401); at least one steering sleeve (404) is configured on any seat body.

5. The lattice wind turbine tower according to claim 4, characterized in that: The transfer section (4) further comprises a first transition piece (402) and a second transition piece (403); the steering sleeve (404) is fixedly connected between the first transition piece (402) and the second transition piece (403); the first transition piece (402) is fixedly connected to the corner column component (7) of the first lattice section (3) at the upper end of the transfer seat (401); and the second transition piece (403) is fixedly connected to the corner column component (7) of the second lattice section (5) at the lower end of the transfer seat (401).

6. The lattice wind turbine tower according to any one of claims 1 to 5, characterized in that: The lattice-type wind turbine tower further comprises a steel tower section (1) and a fixed foundation (6), wherein the steel tower section (1) is fixedly arranged at the upper end of the first lattice section (3), the fixed foundation (6) is suitable for being fixed to the ground side, and the second lattice section (5) is arranged at the upper end of the fixed foundation (6).

7. The lattice wind turbine tower according to claim 6, characterized in that: The lattice-type wind power tower further comprises an assembly section (2), the assembly section (2) being arranged between the steel tower section (1) and the first lattice section (3), the assembly section (2) comprising an assembly seat (201), a first connecting member (202) and a second connecting member (203), the first connecting member (202) being fixedly connected to the inner annular cavity of the assembly seat (201), the first connecting member (202) being fixedly configured with the steel tower section (1), the second connecting member (203) being fixedly connected to a side of the assembly seat (201) facing the first lattice section (3), the second connecting member (203) being fixedly connected to a corner column component (7) of the first lattice section (3), the second connecting member (203) being correspondingly configured with the corner column component (7), and the upper end node of the steel strand (8) being fixedly configured with an anchoring position (204) at the upper end of the second connecting member (203).

8. The lattice wind turbine tower according to any one of claims 1 to 5, characterized in that: The corner column component (7) comprises a first tube body (701), a second tube body (702) and a structural layer (703), the second tube body (702) is sleeved in the first tube body (701) at intervals, the structural layer (703) is filled and arranged between the first tube body (701) and the second tube body (702), and the steel strand (8) is passed through the second tube body (702); and / or The first lattice segment (3) and the second lattice segment (5) are respectively provided with six corner column components (7), and the steel strands (8) are provided in six bundles, and any bundle of the steel strands (8) is passed through the corner column component (7) of the first lattice segment (3) and the corner column component (7) of the second lattice segment (5).

9. The lattice wind turbine tower according to any one of claims 1 to 5, characterized in that: The first lattice segment (3) is provided with a first web member structure (901), the first web member structure (901) is arranged between adjacent corner column components (7) in the first lattice segment (3), and the first web member structure (901) is configured as a single diagonal bracing structure; and / or The second lattice segment (5) is provided with a second web member structure (902), the second web member structure (902) being arranged between adjacent corner column components (7) in the second lattice segment (5), the second web member structure (902) being arranged as a double diagonal brace and transverse brace structure; and / or The steering sleeve (404) is welded or hot-bent in sections to form the bent portion.

10. A construction method for a lattice wind power tower, characterized in that: include: A lattice-type wind power tower is provided, comprising a first lattice segment (3), a transition segment (4) and a second lattice segment (5), wherein the transition segment (4) is suitable for transitioning the first lattice segment (3) and the second lattice segment (5); any lattice segment is provided with a corner column component (7), and all the corner column components (7) are provided with steel strands (8); the transition segment (4) comprises an adapter seat (401), a steering sleeve (404) and a connecting structure, wherein the connecting structure comprises at least two steps and at least two fasteners, wherein any step is fixedly configured with the steering sleeve (404), and any fastener is fixedly connected with the steel strand (8), and the step and the fastener are correspondingly fastened; and the steering sleeve (404) has a bending portion; First, the second lattice section (5), the transition section (4) and the first lattice section (3) are built from bottom to top, and then the steel strand (8) is passed through the whole. The buckle part fixedly connected to the steel strand (8) is placed in the bending part of the steering sleeve (404) to overlap with the step, so that the steel strand (8) in the bending part can be bent and turned in a shape that is consistent with the bending part.

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