Lattice wind power tower and construction method

Abstract

The present application relates to the field of wind power facilities, and discloses a lattice wind power tower and a construction method. The lattice wind power tower comprises a first lattice section, an adapter section and a second lattice section arranged from top to bottom. The adapter section is adapted to connect and transition the first lattice section and the second lattice section. Specifically, the adapter seat is used as a connection base, and the adapter sleeve is used as a steel strand turning guide base in the corner column component of the first lattice section and the second lattice section. For the connection structure, the step and the adapter sleeve are fixedly arranged, the buckle member is fixedly connected with the steel strand, and the step and the buckle member of at least two groups are correspondingly buckled, so that the turning part of the steel strand is arranged in the bending part of the adapter sleeve, thereby achieving the purpose of adaptively bending and turning the steel strand and the bending part. This structure can realize turning and slope changing between two lattice tower sections, can reasonably distribute the prestress of the steel strand in the whole tower, can avoid stress concentration in the adapter section, and can effectively meet the bearing capacity requirement through node design.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power facilities, in particular to a lattice wind power tower and a construction method. BACKGROUND

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

[0003] For different wind speeds, the wind power tower has different structure selection and working characteristics. The lattice wind power tower is a high tower suitable for low wind speed areas. In the related art, the tower structure system is mainly composed of a profile steel tower, a transition section and a top circular pipe. The load borne by the lattice wind power tower is mainly composed of the load transmitted by the wind wheel at the top of the tower and the wind load borne by the tower itself. The profile steel tower and the transition section usually adopt prestressed steel structure to fully cope with the load borne by the lattice tower. The structure of the transition section of the lattice tower is unreasonable, and the internal prestress distribution has defects. During the actual working stage, stress concentration exists at the transition section, which makes it difficult for the lattice tower to meet the use demand of bearing capacity. SUMMARY

[0004] Therefore, the present application provides a solution to the technical problem that the structure of the lattice tower at the transition section is unreasonable, the internal prestress distribution has defects, stress concentration exists at the transition section during the actual working stage, and the lattice tower is difficult to meet the use demand of bearing capacity in the related art.

[0005] In a first aspect, the present application provides a lattice wind power tower, comprising a first lattice section, a transition section and a second lattice section arranged from top to bottom, wherein the transition section is adapted to transition the first lattice section and the second lattice section.

[0006] Any lattice section is provided with an angle column component, and all the angle column components are provided with a steel strand inside;

[0007] The transition section comprises a transition seat, a plurality of turning sleeves and a coupling structure. The turning sleeves are spaced apart and installed on the transition seat. The steel strand is arranged through the turning sleeves, and the steel strand is fixedly assembled in the turning sleeves through the coupling structure.

[0008] The coupling structure comprises at least two steps and at least two buckles, any step is fixedly arranged with the steering sleeve, any buckle is fixedly connected with the steel strand, the steps and the buckles are correspondingly buckled, the steering part of the steel strand is arranged in the bending part of the steering sleeve, so that the steel strand is correspondingly bent and steered with the bending part.

[0009] The lattice wind power tower is connected between the first lattice section and the second lattice section through the transition section, the transition seat is used as the connection base, and the steering sleeve is used as the steel strand steering and guiding base in the corner column part of the first lattice section and the second lattice section; the steps and the steering sleeve are fixedly arranged, the buckles are fixedly connected with the steel strand, the steps and the buckles are correspondingly buckled, the steering part of the steel strand is arranged in the bending part of the steering sleeve, so that the steel strand is correspondingly bent and steered with the bending part. The structure can realize steering and slope change between the two lattice tower sections, the prestress of the steel strand in the whole tower can be reasonably distributed, stress concentration in the transition section is avoided, and the node design effectively meets the bearing capacity requirement.

[0010] In an optional embodiment, the coupling structure comprises a first step, a first buckle, a second step and a second buckle, at least part of the first step and the second step are arranged in the steering sleeve, the first step and the second step are arranged at intervals, the first buckle and the second buckle are slidably arranged with the steel strand, the first buckle and the second buckle are arranged at intervals, the first step is buckled with the first buckle, and the second step is buckled with the second buckle.

[0011] The lattice wind power tower comprises a first step and a first buckle, a second step and a second buckle, the two buckles are arranged at intervals, the bending part of the steering sleeve is arranged between the two buckles, the steering part of the steel strand is arranged in the bending part of the steering sleeve, the steel strand is steered twice, the friction and damage of the steel strand to the inner wall of the steel pipe are avoided, the steering and slope change design is reasonable, the prestress of the steel strand is reasonably distributed, and stress concentration is avoided.

[0012] In an optional embodiment, the extension plane of the first step and the extension plane of the second step are arranged at a first included angle.

[0013] In an optional embodiment, the adapter seat is arranged as a spliced and combined regular polygon structure, the adapter seat comprises a first seat body, a second seat body and a third seat body, and the three seat bodies are fixedly spliced to form the adapter seat; and at least one turning sleeve is arranged on any seat body.

[0014] In an optional embodiment, the adapter section further comprises a first transition piece and a second transition piece, the turning sleeve is fixedly connected between the first transition piece and the second transition piece, the first transition piece is fixedly connected with the corner column component of the first lattice section at the upper end of the adapter seat, and the second transition piece is fixedly connected with the corner column component of the second lattice section at the lower end of the adapter seat.

[0015] In an optional embodiment, the lattice type wind power tower further comprises a steel tower section and a fixed foundation, the steel tower section is fixedly arranged at the upper end of the first lattice section, the fixed foundation is adapted to be fixed to the ground side, and the second lattice section is arranged at the upper end of the fixed foundation.

[0016] The lattice type wind power tower further comprises an assembly section, the assembly section is arranged between the steel tower section and the first lattice section, the assembly section comprises an assembly seat, a first connecting piece and a second connecting piece, the first connecting piece is fixedly connected in the inner ring cavity of the assembly seat, the first connecting piece is fixedly arranged with the steel tower section, the second connecting piece is fixedly connected on the side of the assembly seat facing the first lattice section, the second connecting piece is fixedly connected with the corner column component of the first lattice section, the second connecting piece is correspondingly arranged with the corner column component, and the upper end node of the steel strand is fixedly arranged with the anchoring position at the upper end of the second connecting piece.

[0017] In an optional embodiment, the first lattice section is provided with a first web structure, the first web structure is arranged between the adjacent corner column components in the first lattice section, and the first web structure is arranged as a single inclined strut structure.

[0018] In an optional embodiment, the second lattice section is provided with a second web structure, the second web structure is arranged between the adjacent corner column components in the second lattice section, and the second web structure is arranged as a double inclined strut and cross strut structure.

[0019] In an optional embodiment, the corner column component comprises a first pipe body, a second pipe body and a structure layer, the second pipe body is spacedly sleeved in the first pipe body, the structure layer is arranged between the first pipe body and the second pipe body in a filling manner, and the steel strand is arranged in the second pipe body.

[0020] In an optional embodiment, six of the corner column components are respectively arranged on the first lattice section and the second lattice section, and the steel strands are provided in six bundles, and any bundle of the steel strands is arranged through the corner column components of the first lattice section and the corner column components of the second lattice section.

[0021] In an optional embodiment, the turning sleeve is formed by sectional welding or hot bending to form the bending portion.

[0022] In a second aspect, the application further provides a construction method of the lattice wind power tower, comprising:

[0023] The lattice wind power tower comprises a first lattice section, an adapter section and a second lattice section, the adapter section is adapted to adaptively connect the first lattice section and the second lattice section; any lattice section is provided with a corner column component, and all the corner column components are provided with steel strands; the adapter section comprises an adapter seat, a turning sleeve and a connecting structure, the connecting structure comprises at least two steps and at least two buckles, any step is fixedly arranged with the turning sleeve, any buckle is fixedly connected with the steel strand, and the step and the buckle are correspondingly buckled; the turning sleeve has a bending portion.

[0024] First, the second lattice section, the adapter section and the first lattice section are built from bottom to top, then the steel strands are arranged in whole, the buckle fixedly connected with the steel strand is arranged in the bending portion of the turning sleeve to be correspondingly buckled with the step, so that the steel strand in the bending portion can be adaptively bent and turned. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 The structural schematic diagram of the lattice wind power tower provided by the application is shown in the figure.

[0027] Figure 2 The sectional view of the lattice section in the lattice wind power tower provided by the application is shown in the figure.

[0028] Figure 3 The structural schematic diagram of the assembly section in the lattice wind power tower provided by the application is shown in the figure.

[0029] Figure 4 The structural schematic diagram of the adapter section in the lattice wind power tower provided by the application is shown in the figure.

[0030] Figure 5 Assembly diagram of the turning sleeve and the coupling structure in the lattice wind power tower provided by the present application;

[0031] Figure 6 Assembly diagram of the landing and the buckle in the lattice wind power tower provided by the present application;

[0032] Figure 7 Arrangement diagram of the tower brace above the blade tip in the lattice wind power tower provided by the present application;

[0033] Figure 8 Arrangement diagram of the tower brace below the blade tip in the lattice wind power tower provided by the present application;

[0034] Explanation of reference signs:

[0035] 1, steel tower section; 101, blade clearance allowed 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; 4011, first seat body; 4012, second seat body; 4013, third seat body; 402, first transition piece; 403, second transition piece; 404, turning sleeve; 405, first landing; 406, first buckle; 407, second landing; 408, second buckle; 5, second lattice section; 6, fixed foundation; 7, angle column component; 701, first pipe body; 702, second pipe body; 703, structural layer; 8, steel strand; 901, first web structure; 902, second web structure. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] The embodiments of the present application will be described below in conjunction with Figures 1 to 8

[0040] Figure 1 As shown in the structural schematic diagram of the lattice wind turbine tower, it comprises a first lattice section 3, an adapter section 4 and a second lattice section 5 arranged from top to bottom, and the adapter section 4 is adapted to adapt and transition the first lattice section 3 and the second lattice section 5. In this embodiment, any lattice section is configured with a corner column component 7, and all the corner column components 7 are provided with a steel strand 8 inside.

[0041] Figure 2 As shown in the cross-sectional view of the lattice section in the wind turbine tower, the first lattice section 3 and the second lattice section 5 are respectively provided with six corner column components 7, the internal tension prestress is realized by the steel strand 8, and the adjacent corner column components 7 are connected to each other by using the web member structure. In actual design, the two lattice sections are respectively provided with a blade clearance allowed area 101, and the wind turbine blade tip and the wind turbine tower wall surface have a reasonable safety distance.

[0042] ​The present application sets a variable slope near the blade tip to meet the reasonable blade tip clearance design in view of the different spacing requirements between the angle column components 7 of the lattice wind power tower and the blade tip clearance limitation.

[0043] In a specific embodiment, the first lattice section 3 has a small spacing, the taper of the angle column component 7 in the first lattice section 3 is small, the second lattice section 5 has a large spacing, and the taper of the angle column component 7 in the second lattice section 5 is large, and a variable slope node design is configured at the transition section 4.

[0044] In the present embodiment, the transition section 4 includes a transition seat, a plurality of turning sleeves 404, and a coupling structure. The turning sleeves 404 are spaced apart and installed on the transition seat. The steel strand 8 is arranged through the turning sleeves 404, and the steel strand 8 is fixedly assembled in the turning sleeves 404 through the coupling structure. The coupling structure includes at least two steps and at least two buckles. Any step is fixedly arranged with the turning sleeve 404, and any buckle is fixedly connected with the steel strand 8. The steps and the buckles are correspondingly buckled. The turning sleeve 404 has a bending part, and the coupling structure is arranged inside the bending part, so that the steel strand 8 in the bending part can be adaptively bent and turned with the bending part.

[0045] The lattice wind power tower of the present embodiment establishes the transition connection between the first lattice section 3 and the second lattice section 5 through the transition section 4. Specifically, the transition seat is used as the connection base, and the turning sleeve 404 is used as the turning guide base of the steel strand 8 in the angle column component 7 of the first lattice section 3 and the second lattice section 5. For the coupling structure, the steps are fixedly arranged with the turning sleeve 404, and the buckles are fixedly connected with the steel strand 8. At least two groups of steps and buckles are correspondingly buckled, so that the turning part of the steel strand 8 is arranged in the bending part of the turning sleeve 404, thereby achieving the adaptive bending and turning of the steel strand 8 with the bending part. This structure can realize the turning and slope change between the two lattice tower sections, so that the prestress of the steel strand 8 in the whole tower can be reasonably distributed, the stress concentration in the transition section 4 is avoided, and the node design effectively meets the bearing capacity requirement.

[0046] Figure 5 The figure shows the assembly of the turning sleeve 404 and the coupling structure, Figure 6The assembly diagram of the intermediate landing and the buckle in the lattice wind power tower provided by the present application is shown in the exemplary embodiment. The coupling structure includes a first landing 405, a first buckle 406, a second landing 407, and a second buckle 408. At least part of the first landing 405 and the second landing 407 are respectively configured in the turning sleeve 404. The first landing 405 and the second landing 407 are arranged at intervals. The first buckle 406 and the second buckle 408 are respectively arranged in sliding configuration with the steel strand 8. The first buckle 406 and the second buckle 408 are arranged at intervals. The first landing 405 is buckled to the first buckle 406. The second landing 407 is buckled to the second buckle 408.

[0047] The first landing 405 and the first buckle 406 jointly form a buckle. The second landing 407 and the second buckle 408 jointly form another buckle. The two buckles are arranged at intervals. The bending part of the turning sleeve 404 can be placed between the two buckles. The turning part of the steel strand 8 is constrained in the bending part of the turning sleeve 404 by the two buckles arranged at the front and back ends. The steel strand 8 can be turned twice. The frictional damage of the steel strand 8 to the inner wall of the steel pipe is avoided. The reasonable turning and slope design is achieved. The prestress of the steel strand 8 can be reasonably distributed. Stress concentration is avoided.

[0048] In the optional embodiment, the extension plane of the first landing 405 and the extension plane of the second landing 407 are arranged at a first included angle. The first included angle is greater than 0° and less than or equal to 8°. Preferably, the first included angle is 3° or 4°. The first included angle plus 180° is equal to the bending angle of the bending part. The bending angle is greater than 180° and less than or equal to 188°.

[0049] In other embodiments, the coupling structure can be provided with more than three landings and more than three buckles to adjust the angle of the slope turning design of the bending part and avoid stress concentration.

[0050] In specific embodiments, the coupling structure is provided with two landings. The included angle is 4°. The turning angle is 4°. The coupling structure is provided with three landings. The included angle between the two adjacent landings is 3°. The included angle between the other landing and its adjacent landing is also 3°. The overall turning angle is 6°.

[0051] In the optional embodiment, the turning sleeve 404 can be formed by segment welding or hot bending to form the bending part.

[0052] In a specific embodiment, the step is provided as a plurality of bolt assemblies, the bolt of each bolt assembly is provided through the steering sleeve 404 to form the connecting position of the buckle, and the nut member of each bolt assembly is provided outside the steering sleeve 404 and fixes the bolt and the steering sleeve 404; in addition, the part of the bolt inside the steering sleeve 404 is arranged to be in close contact with the buckle, so as to ensure that the steering of the steel strand 8 is aligned with the desired position, and the assembly accuracy is improved.

[0053] In an optional embodiment, as shown in Figure 4 The adapter seat is provided as a spliced and combined regular polygon structure, and the adapter seat includes a first seat body 4011, a second seat body 4012, and a third seat body 4013, which are fixed and spliced together to form the adapter seat; and at least one steering sleeve 404 is arranged on any seat body. With this arrangement, the adapter seat adopts a spliced and assembled structure, which can be divided into three substructures for transportation to the construction site, and then spliced and fixed by high-strength bolts on site. In an exemplary embodiment, the adapter seat is provided as a regular hexagonal structure, and the corner column member 7 is arranged at the node of the hexagonal structure; of course, the adapter seat can be provided with more seat bodies to be fixed and spliced together to form the adapter seat.

[0054] In an optional embodiment, as shown in Figure 4 The adapter segment 4 further includes a first transition piece 402 and a second transition piece 403, and 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 with the corner column member 7 of the first lattice segment 3 at the upper end of the adapter seat, and the second transition piece 403 is fixedly connected with the corner column member 7 of the second lattice segment 5 at the lower end of the adapter seat. For the structure of the first transition piece 402 and the second transition piece 403, for example, a flange piece or a sleeve piece can be used; the number of the first transition piece 402 and the number of the second transition piece 403 correspond to the number of the corner column member 7, for example, there are six flanges at the upper and lower ends of the adapter segment 4, which are connected with the six corner column members 7 of the first lattice segment 3 and the second lattice segment 5, respectively.

[0055] In a specific embodiment, as shown in Figure 1 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 segment 3, the fixed foundation 6 is adapted to be fixed to the ground side, and the second lattice segment 5 is arranged at the upper end of the fixed foundation 6.

[0056] In a specific embodiment, as shown in Figure 1As shown, the lattice wind power tower further comprises an assembly segment 2, which is arranged between the steel tower segment 1 and the first lattice segment 3, and comprises an assembly seat 201, a first connecting piece 202 and a second connecting piece 203. The first connecting piece 202 is fixedly connected to the inner ring cavity of the assembly seat 201, and is fixedly arranged with the steel tower segment 1. The second connecting piece 203 is fixedly connected to the side of the assembly seat 201 facing the first lattice segment 3, and is fixedly connected with the corner column component 7 of the first lattice segment 3. The second connecting piece 203 is correspondingly arranged with the corner column component 7. The upper end node of the steel strand 8 is fixedly arranged with the anchoring position 204 at the upper end of the second connecting piece 203.

[0057] The prestressed steel strand 8 penetrates the inside of the corner column. The upper end of the steel strand 8 is anchored to the upper surface of the assembly segment 2, and the lower end of the steel strand 8 is anchored in the fixed foundation 6.

[0058] In the embodiment, the turning of the prestressed steel strand 8 is realized inside the adapter segment 4. The adapter segment 4 is pre-buried with a turning sleeve 404, and a first step 405 and a second step 407 are arranged inside the turning sleeve 404. When the steel strand 8 is cabled from top to bottom, the first clasp piece 406 and the second clasp piece 408 are cabled together. When the steel strand 8 reaches the pre-buried turning sleeve 404 inside the adapter segment 4, the first clasp piece 406 is connected with the first step 405, and the second clasp piece 408 is connected with the second step 407. The steps support and hold the clasp pieces, and constrain the turning position of the steel strand 8.

[0059] As a preferred embodiment, the steps are provided with lapping grooves, and the clasp pieces are provided with lapping protrusions. The abutting limiting of the lapping grooves and the lapping protrusions strengthens the alignment and assembly of the steel strand 8.

[0060] In the exemplary embodiment, as shown, Figure 2 The first lattice segment 3 and the second lattice segment 5 are respectively provided with six corner column components 7, and the steel strand 8 is provided with six bundles. Any bundle of the steel strand 8 is arranged with the corner column components 7 of the first lattice segment 3 and the corner column components 7 of the second lattice segment 5. Such a structure arrangement adopts six corner column components 7, which is beneficial to improve the utilization rate of the clearance allowed space.

[0061] In the alternative embodiment, as shown, Figure 2As shown, the corner column component 7 comprises a first pipe body 701, a second pipe body 702 and a structure layer 703, the second pipe body 702 is sleeved in the first pipe body 701 at intervals, the structure layer 703 is filled between the first pipe body 701 and the second pipe body 702, and the steel strand 8 is arranged in the second pipe body 702. The first pipe body 701 and the second pipe body 702 can be steel pipe bodies, and the structure layer 703 can be concrete. The first pipe body 701 and the second pipe body 702 are coaxially aligned through external positioning, and then the concrete is poured and filled. The steel strand 8 is arranged in the second pipe body 702, and the complete corner column component 7 is formed. In this structure, the concrete is arranged in the hollow interlayer of the corner column component 7, the external structure is stable, the second pipe body 702 provides sufficient assembly space for the steel strand 8, and the internal steel strand 8 can effectively provide prestress for assembly of the wind power tower. In the embodiment, the steel-concrete composite structure tower drum is adopted, the mechanical advantages of the steel-concrete composite structure can be fully utilized, the bearing capacity is high, the rigidity is large, the stress concentration problem at the variable slope can be effectively solved, and compared with the pure steel structure tower, the cost is low and the reliability is high.

[0062] Figure 7 As shown in the tower brace arrangement diagram above the blade tip, in the optional embodiment, the first lattice section 3 is provided with a first web member structure 901, the first web member structure 901 is arranged between the adjacent corner column components 7 in the first lattice section 3, and the first web member structure 901 is arranged as a single diagonal brace structure.

[0063] Figure 8 As shown in the tower brace arrangement diagram below the blade tip, the second lattice section 5 is provided with a second web member structure 902, the second web member structure 902 is arranged between the adjacent corner column components 7 in the second lattice section 5, and the second web member structure 902 is arranged as a double diagonal brace and cross brace structure.

[0064] In the specific embodiment, the connection mode between the web member structure and the corner column component 7 and between the web member structures can be a node plate, cast steel or intersecting welding.

[0065] The lattice type wind power tower provided by the application has different diagonal brace arrangements above and below the blade tip according to the size of the corner column spacing, does not affect the stress reliability, and saves the cost.

[0066] The lattice type wind power tower provided by the application has different diagonal brace arrangements above and below the blade tip according to the size of the corner column spacing, does not affect the stress reliability, and saves the cost.

[0067] The embodiment also provides a construction method of the lattice type wind power tower, which comprises the following steps:

[0068] The lattice wind power tower is provided with a first lattice section 3, an adapter section 4 and a second lattice section 5, the adapter section 4 is adapted to adapt and transition the first lattice section 3 and the second lattice section 5; any lattice section is provided with a corner column component 7, all the corner column components 7 are provided with a steel strand 8; the adapter section 4 comprises an adapter seat, a turning sleeve 404 and a connecting structure, the connecting structure comprises at least two steps and at least two buckles, any step is fixedly arranged with the turning sleeve 404, any buckle is fixedly connected with the steel strand 8, the steps and the buckles are correspondingly buckled; the turning sleeve 404 has a bending part;

[0069] First, the second lattice section 5, the adapter section 4 and the first lattice section 3 are built from bottom to top, then the steel strand 8 is integrally arranged, the buckle connected with the steel strand 8 is arranged in the bending part of the turning sleeve 404, so as to be buckled with the step, and the steel strand 8 in the bending part is adapted to the bending and turning of the bending part.

[0070] In the specific construction process, first, the ground side fixed foundation 6 is established;

[0071] Secondly, the corner column components 7 and the second web member structure 902 of the second lattice section 5 are connected layer by layer;

[0072] Then, the adapter section 4 is installed;

[0073] Then, the corner column components 7 and the first web member structure of the first lattice section 3 are connected layer by layer;

[0074] Subsequently, the connecting assembly section 2 is installed;

[0075] Then, the prestressed steel strand 8 is arranged from the anchoring position 204 of the assembly section 2 from top to bottom, the first buckle 406 and the second buckle 408 are arranged together with the steel strand 8, are limited and connected at the turning and slope changing position, the steel strand 8 continues to be arranged downward, and is anchored to the fixed foundation 6 at the bottom;

[0076] Then, the upper steel tower section 1 is installed;

[0077] Finally, the main machine part of the wind power facility is installed.

[0078] Obviously, the above embodiment is only an example for clearly illustrating, and is not a limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A lattice wind turbine tower, characterized in that, The lattice structure comprises a first lattice section (3), an adapter section (4) and a second lattice section (5) arranged from top to bottom, the adapter section (4) is adapted to adapt the transition of the first lattice section (3) and the second lattice section (5); Any lattice section is provided with a corner column component (7), and all the corner column components (7) are provided with a steel strand (8) inside; The adapter section (4) comprises an adapter seat, a plurality of turning sleeves (404) and a coupling structure, the plurality of turning sleeves (404) are respectively and spacedly arranged on the adapter seat, the steel strand (8) is arranged to abut the turning sleeves (404), and the steel strand (8) is fixedly arranged in the turning sleeves (404) through the coupling structure; The coupling structure comprises at least two steps and at least two buckles, any step is fixedly arranged with the turning sleeve (404), any buckle is fixedly connected with the steel strand (8), the step and the buckle are correspondingly buckled, the turning sleeve (404) has a bending part, and the coupling structure is arranged inside the bending part, so that the steel strand (8) in the bending part can be adaptively and bently arranged with the bending part; The adapter seat is arranged as a positive polygonal structure in a splicing and combining mode, the adapter seat comprises a first seat body (4011), a second seat body (4012) and a third seat body (4013), and the three are fixedly and splicingly combined to form the adapter seat; at least one turning sleeve (404) is arranged on any seat body; The adapter section (4) further comprises a first transition piece (402) and a second transition piece (403), the turning sleeves (404) are fixedly connected between the first transition piece (402) and the second transition piece (403), the first transition piece (402) is fixedly connected with the corner column component (7) of the first lattice section (3) at the upper end of the adapter seat, and the second transition piece (403) is fixedly connected with the corner column component (7) of the second lattice section (5) at the lower end of the adapter seat.

2. The lattice wind turbine tower according to claim 1, characterized in that The coupling structure comprises a first step (405), a first buckle (406), a second step (407) and a second buckle (408), at least part of the first step (405) and the second step (407) are respectively arranged in the turning sleeve (404), the first step (405) and the second step (407) are arranged in a spaced mode, the first buckle (406) and the second buckle (408) are respectively and slidably arranged with the steel strand (8), the first buckle (406) and the second buckle (408) are arranged in a spaced mode, the first step (405) is buckled with the first buckle (406), and the second step (407) is buckled with the second buckle (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 included angle, and the first included angle is greater than 0° and less than or equal to 8°.

4. The lattice wind turbine tower according to any of claims 1 to 3, characterized in that The lattice wind power tower further comprises a steel tower section (1) and a fixed foundation (6), the steel tower section (1) is fixedly arranged on the upper end of the first lattice section (3), and the fixed foundation (6) is adapted to be fixed with the ground side, and the second lattice section (5) is arranged on the upper end of the fixed foundation (6).

5. The lattice wind turbine tower according to claim 4, characterized in that The lattice wind power tower further comprises an assembly section (2) arranged between the steel tower section (1) and the first lattice section (3), the assembly section (2) comprises an assembly seat (201), a first connecting piece (202) and a second connecting piece (203), the first connecting piece (202) is fixedly connected in the inner ring cavity of the assembly seat (201), the first connecting piece (202) is fixedly arranged with the steel tower section (1), the second connecting piece (203) is fixedly connected on the side of the assembly seat (201) facing the first lattice section (3), the second connecting piece (203) is fixedly connected with the corner column part (7) of the first lattice section (3), the second connecting piece (203) is correspondingly arranged with the corner column part (7), and the upper end node of the steel strand (8) is fixedly arranged with the anchoring position (204) at the upper end of the second connecting piece (203).

6. The lattice wind turbine tower according to any of claims 1-3, characterized in that The corner column part (7) comprises a first pipe body (701), a second pipe body (702) and a structure layer (703), the second pipe body (702) is spacedly sleeved in the first pipe body (701), the structure layer (703) is arranged between the first pipe body (701) and the second pipe body (702), and the steel strand (8) is arranged in the second pipe body (702); and / or The first lattice section (3) and the second lattice section (5) are respectively arranged with six corner column parts (7), and the steel strand (8) is arranged with six bundles, and any bundle of the steel strand (8) is arranged in the corner column part (7) of the first lattice section (3) and the corner column part (7) of the second lattice section (5).

7. The lattice wind turbine tower according to any of claims 1-3, characterized in that The first lattice section (3) is provided with a first web member structure (901), the first web member structure (901) is arranged between the adjacent corner column parts (7) in the first lattice section (3), and the first web member structure (901) is arranged as a single inclined support structure; and / or The second lattice section (5) is provided with a second web member structure (902), the second web member structure (902) is arranged between the adjacent corner column parts (7) in the second lattice section (5), and the second web member structure (902) is arranged as a double inclined support and cross support structure; and / or The turning sleeve (404) is formed by sectional welding or hot bending.

8. A construction method of a lattice wind power tower, characterized in that, Comprise: The lattice wind power tower is provided with a first lattice section (3), an adapter section (4) and a second lattice section (5), the adapter section (4) is adapted to adaptively transition the first lattice section (3) and the second lattice section (5); any lattice section is provided with a corner column component (7), all the corner column components (7) are provided with a steel strand (8) inside; the adapter section (4) comprises an adapter seat, a plurality of turning sleeves (404) and a coupling structure, the plurality of turning sleeves (404) are respectively and spacedly installed on the adapter seat, the steel strand (8) is abutted and arranged through the turning sleeve (404), and the steel strand (8) is fixedly assembled in the turning sleeve (404) through the coupling structure; the coupling structure comprises at least two steps and at least two buckles, any step is fixedly arranged with the turning sleeve (404), any buckle is fixedly connected with the steel strand (8), and the step and the buckle are correspondingly buckled; the turning sleeve (404) has a bending part; The adapter seat is arranged in a spliced and combined polygonal structure, the adapter seat comprises a first seat body (4011), a second seat body (4012) and a third seat body (4013), and the three are fixedly spliced to form the adapter seat; any seat body is provided with at least one turning sleeve (404); The adapter section (4) further comprises a first transition piece (402) and a second transition piece (403), the turning 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 with the corner column component (7) of the first lattice section (3) at the upper end of the adapter seat, and the second transition piece (403) is fixedly connected with the corner column component (7) of the second lattice section (5) at the lower end of the adapter seat; First, the second lattice section (5), the adapter section (4) and the first lattice section (3) are built from bottom to top, then the steel strand (8) is wholly arranged through, the buckle fixedly connected with the steel strand (8) is arranged in the bending part of the turning sleeve (404), the buckle is correspondingly buckled with the step, and the steel strand (8) in the bending part is adaptively bent and turned.

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