Special-shaped sheet combined wind power tower

Abstract

The present application relates to the technical field of wind power generation equipment, in particular to a special-shaped piece combined wind power tower, which comprises a tower drum in the shape of a polygonal prism, the tower drum comprises a plurality of tower drum segments, and adjacent tower drum segments are fixedly connected through connecting assemblies; each tower drum segment comprises a plurality of tower drum pieces; two vertical flanges are arranged on each tower drum piece, the two vertical flanges are in the shape of an eight-character, and the large opening faces inwards; a reinforcing piece is inserted between the two adjacent vertical flanges on adjacent tower drum pieces, the reinforcing piece is in the shape of a V, the opening faces outwards, the reinforcing piece and the vertical flanges are arranged in parallel, a plurality of reinforcing ribs are fixedly arranged at the opening of each reinforcing piece, the reinforcing ribs are arranged in parallel to the axis direction of the tower drum segment, and the reinforcing ribs are connected with the vertical flanges through bolt assemblies. During installation, the reinforcing piece and the two vertical flanges on the same tower drum piece form a stable triangular structure, thereby improving the stability of the wind power tower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation equipment, in particular to a special-shaped piece combined wind power tower. BACKGROUND

[0002] The wind power tower is an important structural component for supporting the wind turbine in the wind power generation system, which is usually composed of a tower cylinder, a tower cap, a tower foundation and a support system. According to different design requirements, the structure of the tower cylinder can be divided into cylindrical towers, truss towers and cable towers, etc. Among them, the cylindrical tower is widely used due to its good overallity and aesthetics.

[0003] In related technologies, for example, Chinese patent CN222162825U discloses an anti-fatigue split piece type wind power tower cylinder. The anti-fatigue split piece type wind power tower cylinder includes a tower cylinder segment and a connecting assembly. The top or bottom of the tower cylinder segment is detachably installed with a connecting ring. The tower cylinder segment includes at least two tower cylinder pieces. The two sides of each tower cylinder piece are installed with mounting pieces. The connecting assembly includes mounting holes opened on the mounting pieces, high-strength bolts arranged in the mounting holes, and fixing nuts threadedly connected to one end of the high-strength bolts. When the tower cylinder segments are spliced, the adjacent mounting pieces are fixed into a reinforcing piece by the connecting assembly to complete the assembly of the multiple tower cylinder pieces, so that the multiple tower cylinder pieces form a ring structure, and the overall structural strength of the tower cylinder segment is improved by the reinforcing piece. The connection of the longitudinally adjacent tower cylinder segments is completed by the connecting ring.

[0004] However, the above-mentioned anti-fatigue split piece type wind power tower cylinder also has some problems in actual use. When the wind power tower is running, it needs to bear various complex loads such as wind load, gravity load of the cabin and blades, and dynamic load due to vibration. The vertical structure of the mounting piece mainly works in the way of axial compression and bending when bearing these loads. Due to the limitation of the cross-sectional size of the vertical structure of the mounting piece and the connection mode, its ability to resist deformation and damage is limited under the action of the load, and local instability phenomenon is easy to occur. Moreover, in actual working conditions, the direction and size of the wind force change constantly, and the vertical structure of the mounting piece is affected by alternating stress. Under long-term operation, this alternating stress will cause structural fatigue damage, further weakening its strength. At the same time, there may be stress concentration problems between the mounting piece and the tower cylinder piece, so that the strength of this area cannot meet the requirements of long-term stable operation of the wind power tower, thereby affecting the safety and reliability of the entire wind power tower. SUMMARY

[0005] Therefore, it is necessary to provide a special-shaped piece combined wind power tower aiming at the poor stability problem of the current wind power tower in use.

[0006] The above-mentioned purpose is realized by the following technical scheme:

[0007] The utility model provides a special-shaped piece combined wind power tower, which comprises a tower drum, the tower drum is polygonal prism structure, and the big end is down in use, the tower drum comprises a plurality of tower drum sections, and adjacent tower drum sections are fixedly connected through connecting assemblies, each tower drum section comprises a plurality of tower drum pieces, two vertical flanges are arranged on the inner side wall of each tower drum piece, the vertical flanges extend along the direction parallel to the axis direction of the tower drum section, two vertical flanges on the same tower drum piece are arranged in a week direction and are in a eight character structure, and the big mouth is arranged inward, a reinforcing piece is inserted between two adjacent vertical flanges on adjacent tower drum pieces, the reinforcing piece is V-shaped structure, and the opening is outwardly arranged, the reinforcing piece extends along the direction parallel to the axis direction of the tower drum section, a plurality of reinforcing ribs are fixedly arranged on each reinforcing piece, and the reinforcing ribs are arranged in the direction parallel to the axis direction of the tower drum section, two first nuts are fixedly arranged on each reinforcing rib, a first bolt is threadedly inserted on each first nut, the first bolt penetrates the vertical flange and the reinforcing piece, and the first bolt is arranged perpendicularly to the side wall of the reinforcing piece.

[0008] Further, the two ends of each reinforcing piece are sealingly inserted with sealing plugs, the sealing plugs, the reinforcing piece and the tower drum piece surround a sealing chamber, and the sealing chamber is filled with sealing glue.

[0009] Further, the connecting assembly comprises an end flange, the top and bottom of each tower drum piece are provided with the end flange, and the end flanges adjacent in the circumferential direction are arranged at intervals, the top of each end flange is provided with a plurality of mounting holes, the mounting holes are arranged at intervals in the circumferential direction, a second bolt is commonly inserted into the mounting holes of the end flanges adjacent in the axial direction, and a second nut is threadedly sleeved on the second bolt.

[0010] Further, the end flanges adjacent in the circumferential direction are bonded with a mortise and tenon part.

[0011] Further, the two ends of the end flange are provided with dovetail grooves, the mortise and tenon part is in a sheet structure, the two ends of the mortise and tenon part are provided with dovetail blocks, and the dovetail blocks are inserted into the dovetail grooves.

[0012] Further, a plurality of first reinforcing ribs are connected between the tower drum piece and the end flange, and the first reinforcing ribs are arranged at intervals in the circumferential direction.

[0013] Further, the first reinforcing ribs on the same end flange are divided into two groups, the first reinforcing ribs in the two groups are alternately arranged in the circumferential direction, and the heights of the first reinforcing ribs in the two groups in the axis direction of the tower drum section are different.

[0014] Further, the inner side wall of each of the tower drum pieces is provided with a plurality of second reinforcing ribs extending in a direction parallel to the axis direction of the tower drum segment, and the plurality of second reinforcing ribs are arranged in a circumferential direction.

[0015] Further, the inner side wall of each of the tower drum pieces is provided with a plurality of third reinforcing ribs in an arc-shaped structure, and the plurality of third reinforcing ribs are arranged in a direction parallel to the axis direction of the tower drum segment.

[0016] Further, a sealing strip is sealingly arranged between adjacent tower drum pieces, the reinforcing member and the vertical flange, and the sealing strip extends in a direction parallel to the axis direction of the tower drum segment.

[0017] The beneficial effects of the present application are:

[0018] The present application relates to a special-shaped piece combined wind power tower, by setting the tower drum to be a polygonal prism structure, and in use, the large end is at the bottom, compared with the cylindrical tower drum, which can increase the axial strength and the axial anti-swing degree; by setting the vertical flange and the reinforcing member, the reinforcing member and the two vertical flanges on the same tower drum piece form a stable triangular structure during use, which increases the axial strength and improves the stability of the wind power tower; by setting the first bolt and the vertical side wall of the reinforcing member, the convenience of installing the first bolt is improved, and interference is avoided.

[0019] Further, by setting the sealing plug, during assembly, the sealing plug is sealingly inserted into the bottom of the reinforcing member, so that the sealing plug, the reinforcing member and the tower drum piece jointly form a sealed chamber, then the sealing chamber is filled with sealing glue, so that the sealing effect can be achieved, the connection strength between the first nut and the first bolt can be improved, the connection strength between the adjacent tower drum pieces can be improved, the stability of the wind power tower can be improved, then the sealing plug is sealingly inserted into the top of the reinforcing member, so that the sealing glue is isolated from the external environment, the sealing glue is prevented from being disturbed by the external environment, and the sealing performance of the sealing glue is ensured.

[0020] Further, by setting the mortise and tenon part, the connection strength between the adjacent end flanges is improved.

[0021] Further, by setting the dovetail groove and the dovetail block, the circumferential connection strength between the adjacent end flanges is improved while connecting the circumferentially adjacent end flanges together.

[0022] Further, by setting the first reinforcing rib, the bending strength of the tower drum piece and the end flange is improved.

[0023] Further, by setting multiple first reinforcing ribs on the same end flange into two groups, the two groups of first reinforcing ribs are arranged alternately in the circumferential direction and have different heights along the axis direction of the tower drum section, which can better support the tower drum when the tower drum is impacted by wind force.

[0024] Further, by setting the second reinforcing rib, the second reinforcing rib extends in a direction parallel to the axis direction of the tower drum section, which improves the axial strength of the tower drum piece; by setting multiple second reinforcing ribs arranged at intervals in the circumferential direction, the circumferential strength of the tower drum piece is improved.

[0025] Further, by setting the third reinforcing rib, the third reinforcing rib is an arc-shaped structure, which improves the circumferential strength of the tower drum piece; by setting multiple third reinforcing ribs arranged at intervals in the circumferential direction, the axial strength of the tower drum piece is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A perspective structural schematic view of the tower drum section of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0027] Figure 2 A top view structural schematic view of the tower drum section of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0028] Figure 3 A partial perspective structural schematic view of the tower drum piece of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0029] Figure 4 A top view structural schematic view of the tower drum piece of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0030] Figure 5 A perspective structural schematic view of part of the structure of the tower drum piece of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0031] Figure 6 A parts exploded schematic view of part of the structure of the tower drum piece of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0032] Figure 7 A top view structural schematic view of part of the structure of the tower drum piece of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided;

[0033] Figure 8 A perspective structural schematic view of the assembly of the reinforcing member, the first nut and the sealing strip of the special-shaped piece combined wind power tower provided by the embodiment of the present application is provided.

[0034] Wherein:

[0035] 1, tower drum section; 101, tower drum piece; 102, vertical flange; 1021, first insertion hole;

[0036] 2, connecting assembly; 201, end flange; 2011, mounting hole; 2012, dovetail groove;

[0037] 3, reinforcing member; 301, reinforcing rib; 3011, mounting plate; 302, second jack;

[0038] 4, first bolt;

[0039] 5, first nut;

[0040] 6, sealing plug;

[0041] 7, mortise and tenon part; 701, dovetail block;

[0042] 8, first reinforcing rib;

[0043] 9, second reinforcing rib;

[0044] 10, third reinforcing rib; 1001, ear plate;

[0045] 11, sealing strip. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with examples and in conjunction with the drawings. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0047] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects and do not have any order or technical meaning. And the "connection" and "coupling" in this paper, unless otherwise specified, include direct and indirect connection (coupling). In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify 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.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] like Figures 1 to 8 As shown, an embodiment of the present invention provides a wind turbine tower with irregularly shaped panels, comprising a tower cylinder, which is a polygonal frustum-shaped structure with the larger end facing down during use; the tower cylinder includes multiple tower cylinder segments 1, adjacent tower cylinder segments 1 are fixedly connected by connecting components 2; each tower cylinder segment 1 includes multiple tower cylinder plates 101; each tower cylinder plate 101 has two vertical flanges 102 on its inner sidewall, the vertical flanges 102 extend in a direction parallel to the axis of the tower cylinder segment 1, the two vertical flanges 102 on the same tower cylinder plate 101 are arranged circumferentially at intervals, and have a V-shaped structure, with the larger opening facing inward; adjacent A reinforcing member 3 is inserted between two adjacent vertical flanges 102 on the tower section 101. The reinforcing member 3 has a V-shaped structure and the opening faces outward. The reinforcing member 3 extends in a direction parallel to the axis of the tower section 1. Multiple reinforcing ribs 301 are fixedly provided on each reinforcing member 3. The multiple reinforcing ribs 301 are arranged at intervals in a direction parallel to the axis of the tower section 1. Two first nuts 5 are fixedly provided on each reinforcing rib 301. A first bolt 4 is threaded into each first nut 5. The first bolt 4 passes through the vertical flange 102 and the reinforcing member 3 and is perpendicular to the side wall of the reinforcing member 3.

[0050] Specific to the embodiment, the two adjacent vertical flanges 102 on the adjacent tower panel 101 are in a splayed structure, and the wide end is outwardly arranged to ensure that a V-shaped area can be formed to facilitate the installation of the reinforcing member 3. The reinforcing member 3 is in a strip structure. The reinforcing rib 301 is in a triangular block structure and is fixedly arranged at the opening of the reinforcing member 3. To facilitate the vertical connection between the first bolt 4 and the reinforcing member 3, two mounting plates 3011 are symmetrically arranged on the side wall of the reinforcing rib 301 towards the tower panel 101, the plate surface of the mounting plate 3011 and the side wall surface of the reinforcing member 3 are arranged vertically, and the first nut 5 is arranged on the plate surface of the mounting plate 3011 with the side wall surface coinciding and fixed during installation. To facilitate the installation of the first bolt 4, a plurality of first insertion holes 1021 are formed on the side wall surface of the vertical flange 102, and the plurality of first insertion holes 1021 are arranged in a direction parallel to the axis direction of the tower section 1. A plurality of pairs of second insertion holes 302 are formed on the side wall surface of the reinforcing member 3, and the plurality of pairs of second insertion holes 302 are arranged in a direction parallel to the axis direction of the tower section 1 and correspond to the reinforcing rib 301 during installation. The second insertion holes 302 of the same pair are respectively located on the two side wall surfaces of the reinforcing member 3. The first bolt 4 penetrates the first insertion hole 1021 and the second insertion hole 302 in sequence and is threadedly installed on the first nut 5 during installation, thereby ensuring that the adjacent tower panels 101 can be fixedly connected together.

[0051] Alternatively, the first insertion hole 1021 is in a rounded rectangular structure and is vertically arranged. In this way, from the perspective of structural design principle, compared with the traditional circular or square shape, the rounded rectangular first insertion hole 1021 retains the directional advantage of the square insertion hole in positioning and eliminates the stress concentration hidden danger caused by sharp corners through rounding treatment. Therefore, when the reinforcing member 3 is inserted into the V-shaped area formed by the adjacent tower panels 101, the long side direction of the rounded rectangular shape is consistent with the axis direction of the tower section 1, and the regular geometric contour can form an intuitive visual reference and spatial correspondence relationship with the second insertion hole 302 on the reinforcing member 3. Therefore, when the construction personnel perform the assembly operation, the alignment direction of the second insertion hole 302 can be quickly judged according to the rectangular shape of the first insertion hole 1021, and the positioning deviation risk caused by the irregular shape of the insertion hole is greatly reduced.

[0052] In actual installation operation, the vertically arranged rounded rectangular first insertion hole 1021 is highly consistent with the action path of the reinforcing member 3 inserted into the V-shaped area. Since the reinforcing member 3 is inserted in a direction parallel to the axis direction of the tower section 1, the vertically arranged second insertion hole 302 and the first insertion hole 1021 can be naturally aligned in the vertical direction during the insertion process without the need for additional complex angle adjustment, thereby simplifying the installation process and avoiding the tedious operations such as repeated trial insertion and fine adjustment that may occur in the alignment process of the traditional insertion hole structure, and significantly improving the assembly efficiency.

[0053] In use, the tower drum is configured as a polygonal prism structure from the overall configuration, and the large end is at the bottom in use. This design has multiple performance improvements compared to the traditional cylindrical tower drum. In terms of mechanical principles, the variable cross-section characteristic of the prism structure enables the tower drum to more reasonably distribute stress distribution when bearing axial load. The large-end-down layout increases the support area and moment of inertia of the bottom of the structure, thereby effectively enhancing the axial load-carrying capacity of the tower drum and reducing the risk of buckling caused by axial pressure. At the same time, the variable cross-section form can change the vibration frequency and mode under wind load, reduce the influence of wind-induced vibration on the tower drum, and thereby significantly improve the axial anti-swing degree and improve the operation stability of the wind tower in complex wind field environment.

[0054] In terms of the connection structure design of the tower drum piece 101, the combination of the vertical flange 102 and the reinforcing member 3 forms an efficient mechanical reinforcement system. In actual use, the reinforcing member 3 and the two vertical flanges 102 on the same tower drum piece 101 form a stable triangular structure. According to the geometric stability principle of a triangle, this structure can effectively decompose and transmit various loads such as tension, compression, and shear that the tower drum receives during operation, avoiding the occurrence of stress concentration. In this way, not only is the axial strength of the tower drum greatly improved, but also its ability to resist lateral deformation is significantly enhanced, effectively reducing the displacement and sway of the tower drum caused by wind fluctuations, and comprehensively improving the overall stability and reliability of the wind tower.

[0055] In terms of the installation design of the connecting component, the first bolt 4 is arranged vertically with the side wall surface of the reinforcing member 3. This design fully considers the actual needs of engineering installation. The vertical arrangement of the first bolt 4 and the connecting structure of the reinforcing member 3 and the vertical flange 102 form a simple and direct assembly relationship. During installation, the construction personnel can operate more intuitively and conveniently without the need for complex angle adjustment or special tool assistance, greatly improving installation efficiency. At the same time, this vertical arrangement effectively avoids the risk of interference between the first bolt 4 and the inner circumferential wall of the tower drum segment 1 during installation, avoiding installation difficulties, component damage, and other problems caused by interference, ensuring the installation quality and construction safety of the connecting structure, and ensuring the stability and reliability of the overall structure of the wind tower.

[0056] In further embodiments, to further improve the stability of the special-shaped piece combined wind tower, a sealing plug 6 is sealingly inserted at both ends of each reinforcing member 3. The sealing plug 6, the reinforcing member 3, and the tower drum piece 101 form a sealed chamber, and the sealed chamber is filled with sealant.

[0057] In this embodiment, the sealing plug 6 is a stepped block structure, and the small end is sealingly inserted into the top or bottom of the reinforcing member 3 during installation.

[0058] In the assembling process, firstly, the small end of the sealing plug 6 is inserted into the bottom of the reinforcing member 3, and an initial sealing structure is formed by using the stepped close fit between the sealing plug 6 and the inner wall of the reinforcing member 3, so that the sealing plug 6, the reinforcing member 3 and the tower barrel sheet 101 jointly enclose to construct a sealing cavity with an open top; then the sealing glue is filled into the sealing cavity through the top of the reinforcing member 3, and the liquid sealing glue is fully filled in the sealing cavity, which can penetrate into the thread connection gap between the first nut 5 and the first bolt 4 on the one hand, and form a firm cementation layer after solidification, thereby significantly enhancing the friction and anti-loosening ability of the thread connection and effectively avoiding the loosening problem of the first bolt 4 caused by wind vibration; on the other hand, the sealing glue forms a continuous elastic buffer layer at the connection interface between the reinforcing member 3 and the tower barrel sheet 101, which can effectively disperse the stress concentration caused by external load and improve the overall structural strength of the connection part of adjacent tower barrel sheets 101.

[0059] After the sealing glue is filled, the sealing plug 6 is sealingly installed at the top of the reinforcing member 3, and the top is sealed by precise fitting of the stepped structure to completely isolate the sealing cavity from the external environment, which effectively avoids the pollution of the sealing glue by external impurities such as moisture and dust during the solidification process, prevents the performance degradation of the sealing glue, and also avoids the aging problem of the sealing glue caused by oxidation and ultraviolet radiation, thereby ensuring that the sealing glue maintains good sealing performance and mechanical properties for a long time.

[0060] In other embodiments, the connecting assembly 2 is provided with end flanges 201, and each tower barrel sheet 101 is provided with an end flange 201 at the top and the bottom, and the circumferentially adjacent end flanges 201 are spaced apart; the top of each end flange 201 is provided with a plurality of mounting holes 2011, and the mounting holes 2011 are arranged in a circumferentially spaced manner, and the mounting holes 2011 of the axially adjacent end flanges 201 are jointly inserted with a second bolt, and the second bolt is threadedly sleeved with a second nut.

[0061] Specifically, in this embodiment, the end flange 201 is an arc-shaped plate structure, and is horizontally arranged at the top or the bottom of the tower barrel sheet 101, and the outer arc side wall of the end flange 201 coincides with the outer peripheral wall of the tower barrel sheet 101. The circumferentially adjacent end flanges 201 are spaced apart, so that a gap is formed therebetween to avoid interference with the installation of the reinforcing member 3.

[0062] In use, after the plurality of tower barrel sheets 101 are assembled into a tower barrel section 1 by the first bolt 4 and the first nut 5, the adjacent tower barrel sections 1 are stacked in the vertical direction, and the positions of the mounting holes 2011 thereon correspond, then the second bolt is inserted through the mounting holes 2011, and the adjacent tower barrel sections 1 are fixed together by the second nut.

[0063] In a further embodiment, to improve the connection strength between the circumferentially adjacent end flanges 201, a tenon-mortise part 7 is arranged to be bonded between the circumferentially adjacent end flanges 201.

[0064] Specifically in this embodiment, the tenon-mortise part 7 is a kind of fitting connection structure, which can effectively limit the relative displacement of the adjacent end flanges 201 in the circumferential, radial and tangential directions through the close fitting of the tenon and the mortise.

[0065] In the process of wind power generation, the wind power tower bears complex and variable wind load, and the connection of the end flange 201 needs to bear large torque, shear force and tension and pressure. The arrangement of the tenon-mortise part 7 breaks the traditional single stress mode relying only on bolt connection, forming a composite bearing system of "mechanical engagement plus bolt fastening". After the tenon is inserted into the mortise, the friction and mechanical interlocking effect between the two can disperse and transmit the external force acting on the end flange 201 in multiple directions, avoiding stress concentration at the bolt connection point, thereby greatly improving the overall connection strength and structural reliability of the end flange 201.

[0066] In a further embodiment, the two ends of the end flange 201 are provided with dovetail grooves 2012; the tenon-mortise part 7 is a sheet structure, and the two ends of the tenon-mortise part 7 are provided with dovetail blocks 701, which are inserted into the dovetail grooves 2012.

[0067] Specifically in this embodiment, the dovetail block 701 is a trapezoidal structure, and the long bottom side is on the outside, so that the dovetail block 701 can be quickly positioned and inserted, and a natural anti-disengagement locking mechanism can be formed after assembly. The dovetail groove 2012 is a trapezoidal structure, and is arranged on the top of the upper end flange 201 or the bottom of the upper end flange 201, and the long bottom side is on the outside.

[0068] During use, after the two sealing plugs 6 are inserted into the reinforcing part 3, the dovetail blocks 701 at both ends of the tenon-mortise part 7 are aligned with the dovetail grooves 2012 of the end flange 201, and the guiding characteristics of the dovetail structure can be used to achieve quick and accurate positioning and installation. After the dovetail block 701 is inserted into the dovetail groove 2012, the trapezoidal structure and the close fitting of the groove body can effectively disperse the torque, shear force and tension and pressure borne by the end flange 201 during the operation of the wind power tower.

[0069] In other embodiments, to improve the bending strength of the tower piece 101 and the end flange 201, a plurality of first reinforcing ribs 8 are arranged to connect the tower piece 101 and the end flange 201, and the plurality of first reinforcing ribs 8 are arranged at intervals in the circumferential direction.

[0070] Specifically in this embodiment, the first reinforcing rib 8 is a right-angled triangle structure.

[0071] In the process of wind power generation, the connection between the tower piece 101 and the end flange 201 needs to withstand the bending moment, shear force and torsional force and other complex external forces generated by wind load. Under long-term alternating load, the traditional structure is prone to stress concentration at the connection, leading to local deformation and even fatigue failure. The introduction of the first reinforcing rib 8 effectively enhances the structural stiffness of the region by constructing a triangular mechanical support system. Specifically, the first reinforcing rib 8 adopts a right triangle structure, which has excellent geometric stability. When stressed, its right angle side closely fits the tower piece 101 and the end flange 201, and the oblique side forms an efficient force transmission path, which can quickly disperse the bending load acting on the tower piece 101 and the end flange 201 to the entire structure system, significantly reducing the stress peak at the connection.

[0072] At the same time, a plurality of first reinforcing ribs 8 are arranged along the circumference of the tower to form a uniform and continuous mechanical support network. This circumferentially uniform design ensures that the tower can obtain effective structural support when subjected to wind loads in various directions.

[0073] In further embodiments, the plurality of first reinforcing ribs 8 on the same end flange 201 are divided into two groups, and the two groups of first reinforcing ribs 8 are arranged alternately along the circumference and have different heights along the axis direction of the tower section 1.

[0074] Specifically, in this embodiment, for two adjacent first reinforcing ribs 8, the length of the vertical right angle side of one first reinforcing rib 8 is greater than that of the other first reinforcing rib 8.

[0075] During use, when the wind turbine tower is subjected to wind impact, the first reinforcing ribs 8 of different heights can form a gradient stress response mechanism in the vertical direction: the first reinforcing rib 8 with longer height plays a dominant role in resisting larger bending moments, effectively inhibiting the overall bending deformation of the tower by its larger moment of inertia and force arm; while the first reinforcing rib 8 with shorter height plays an auxiliary supporting role in the high-frequency vibration and local stress concentration area, timely adjusting the stress distribution by quickly responding to dynamic load changes. The two work together to form a three-dimensional, multi-level mechanical protection system, significantly enhancing the anti-deformation ability and structural stability of the tower under complex wind conditions.

[0076] In other embodiments, to improve the strength of the tower piece 101, a plurality of second reinforcing ribs 9 are provided on the inner side wall of each tower piece 101, and the second reinforcing ribs 9 extend along the direction parallel to the axis direction of the tower section 1. The plurality of second reinforcing ribs 9 are arranged along the circumference.

[0077] Specifically, the second reinforcing rib 9 is a strip structure, and the top end extends to the bottom of the upper end flange 201, and the bottom end extends to the top of the lower end flange 201.

[0078] In use, when the tower drum is subjected to axial load, the second reinforcing rib 9 extends in the direction parallel to the axis of the tower drum section 1, which can make full use of the axial tensile and compressive properties of the material. At this time, the second reinforcing rib 9 works with the tower drum sheet 101 to uniformly disperse the axial force to the entire structure system, effectively reducing the axial compressive stress of the tower drum sheet 101 and improving its ability to resist axial buckling deformation. According to Euler's formula in material mechanics, increasing the axial support structure can significantly improve the critical instability load of the component. The introduction of the second reinforcing rib 9 is equivalent to increasing the axial support stiffness of the tower drum sheet 101, thereby greatly improving its axial strength.

[0079] At the same time, a plurality of second reinforcing ribs 9 are arranged in a circumferential interval to form a support network similar to "ribs". This circumferentially uniform structural layout can effectively resist the torsional moment and circumferential bending stress generated by the wind. When the tower drum is subjected to circumferential load, each second reinforcing rib 9 cooperates with the connecting interface of the tower drum sheet 101 to disperse and transfer the torsional moment and bending stress in the circumferential direction, avoiding the occurrence of stress concentration. Each second reinforcing rib 9 and the tower drum sheet 101 form a rigid connection structure, which acts as an independent force unit, cooperates with each other in the circumferential direction, and collectively enhances the overall stiffness and stability of the tower drum sheet 101, thereby significantly improving its circumferential strength.

[0080] In other embodiments, a plurality of third reinforcing ribs 10 are arranged on the inner side wall of each tower drum sheet 101. The third reinforcing rib 10 is an arc structure, and a plurality of third reinforcing ribs 10 are arranged in a direction parallel to the axis of the tower drum section 1.

[0081] In this embodiment, the third reinforcing rib 10 is arranged horizontally.

[0082] In use, when the wind turbine tower is subjected to circumferential torsional moment generated by the wind, the arc-shaped third reinforcing rib 10 can convert the torsional moment into tensile and compressive stress in the arc length direction due to its special geometric shape. According to the arch effect principle in structural mechanics, an arc-shaped component will generate a horizontal thrust pointing to the arch center when subjected to force. This thrust forms a mutual constraint mechanical relationship between the reinforcing rib and the tower drum sheet 101, effectively dispersing the circumferential load and avoiding stress concentration in the local area of the tower drum sheet 101. The horizontally arranged third reinforcing rib 10 is highly consistent with the circumferential direction of the tower drum sheet 101, which can maximize its ability to resist circumferential deformation, tightly constrain the tower drum sheet 101 like a ring-shaped hoop, and significantly improve its circumferential stiffness and strength.

[0083] When the tower drum is subjected to axial pressure or bending stress, the design of the plurality of third reinforcing ribs 10 arranged along the axis direction of the tower drum section 1 forms a longitudinal mechanical support system: these third reinforcing ribs 10 arranged at intervals and the tower drum sheet 101 together form a structure similar to a corrugated plate, and each third reinforcing rib 10 can be regarded as an independent axial support unit. Under the action of axial load, they work cooperatively through the connecting interface with the tower drum sheet 101 to disperse and transmit the axial force in the longitudinal direction. This distributed support structure can effectively suppress the axial buckling deformation of the tower drum sheet 101 and at the same time enhance its bending resistance. According to the theory of elasticity, the third reinforcing ribs 10 arranged at intervals increase the cross-sectional moment of inertia of the tower drum sheet 101, reduce the axial stress per unit area, and thus greatly improve the axial bearing capacity of the tower drum sheet 101.

[0084] In other embodiments, a plurality of second reinforcing ribs 9 and a plurality of third reinforcing ribs 10 are arranged on the inner side wall of each tower drum sheet 101, and the second reinforcing ribs 9 and the third reinforcing ribs 10 are arranged vertically and crosswise.

[0085] In particular to this embodiment, in order to facilitate the installation of the third reinforcing ribs 10, a notch is formed at the same horizontal height of each second reinforcing rib 9, and the third reinforcing rib 10 is inserted and installed at the notch during installation.

[0086] Further, in order to improve the connection strength between the second reinforcing rib 9 and the third reinforcing rib 10, a plurality of pairs of ear plates 1001 are arranged at the top of each second reinforcing rib 9. The same pair of ear plates 1001 are respectively arranged on the left and right sides of the same second reinforcing rib 9, and are fixed on the second reinforcing rib 9 by means of third bolts and third nuts.

[0087] During use, when the wind tower is subjected to complex wind load, the second reinforcing rib 9 extends along the axis direction of the tower drum section 1 and mainly bears the axial load, while the third reinforcing rib 10 arranged in an arc shape horizontally mainly resists the circumferential torque and bending stress. The vertical and crosswise arrangement of the two forms a mechanical structure similar to an orthogonal grid, which divides the stress area of the tower drum sheet 101 into a plurality of mutually supporting sub-units. This composite structure can efficiently decompose and transmit the load in the axial and circumferential directions, avoiding stress concentration in a single direction. According to the theory of structural mechanics, the orthogonal arrangement of the second reinforcing rib 9 and the third reinforcing rib 10 significantly improves the cross-sectional moment of inertia and torsional stiffness of the tower drum sheet 101, so that the overall structure can maintain good mechanical properties when subjected to various loads such as tension, compression, bending and torsion.

[0088] In other embodiments, in order to improve the sealing performance of the sealed chamber, a sealing strip 11 is arranged to be sealed between adjacent tower drum sheets 101 and between the reinforcing member 3 and the vertical flange 102, and the sealing strip 11 extends in a direction parallel to the axis of the tower drum section 1.

[0089] Specific to the embodiment, the sealing strip 11 is a columnar structure.

[0090] During the operation of the wind turbine tower, the sealing chamber needs to resist rainwater erosion, moisture penetration and corrosive medium intrusion for a long time. The sealing strip 11 is arranged between the adjacent tower drum pieces 101 and between the reinforcing member 3 and the vertical flange 102, forming multiple sealing lines of defense. The sealing strip 11 extends along the direction parallel to the axis of the tower drum section 1, which can match the main stress direction of the wind turbine tower, ensuring that the sealing strip 11 can maintain good sealing contact when the structure is slightly deformed. The columnar sealing strip 11 has good elastic deformation ability and self-adaptability. Its circular cross-section can deform uniformly when extruded, tightly filling the gap between components and effectively blocking the penetration path of liquid and gas. According to the capillary effect principle in fluid mechanics, the continuous arrangement of the columnar sealing strip 11 eliminates the gap that may cause capillary water absorption, further enhancing the waterproof performance.

[0091] In actual application scenarios, this sealing structure exhibits significant technical advantages: the sealing strip 11 between adjacent tower drum pieces 101 effectively prevents external rainwater and moisture from entering the sealing chamber, protecting the internal sealant from water erosion and ensuring its long-term good sealing and bonding performance; the sealing strip 11 between the reinforcing member 3 and the vertical flange 102 further enhances the sealing performance of the connection part, avoiding the contact of corrosive gas or liquid with metal components, preventing electrochemical corrosion and prolonging the service life of the key structure of the wind turbine tower.

[0092] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure.

[0093] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application.

Claims

1. A wind turbine tower with irregularly shaped panels, characterized in that, The irregularly shaped modular wind turbine tower includes a tower cylinder, which is a polygonal frustum-shaped structure with the larger end facing down during use. The tower cylinder comprises multiple tower cylinder segments, which are fixedly connected by connecting components. Each tower cylinder segment includes multiple tower cylinder plates. Two vertical flanges are provided on the inner wall of each tower cylinder plate. These vertical flanges extend in a direction parallel to the axis of the tower cylinder segment. The two vertical flanges on the same tower cylinder plate are arranged circumferentially at intervals, forming a V-shape, with the larger opening facing inwards. Adjacent tower cylinder plates... A reinforcing member is inserted between the two vertical flanges. The reinforcing member has a V-shaped structure and its opening faces outward. The reinforcing member extends in a direction parallel to the axis of the tower section. Each reinforcing member is fixedly provided with multiple reinforcing ribs, which are spaced apart in a direction parallel to the axis of the tower section. Each reinforcing rib is fixedly provided with two first nuts, and each first nut is threaded with a first bolt. The first bolt passes through the vertical flange and the reinforcing member and is perpendicular to the side wall of the reinforcing member. Each of the reinforcing members has a sealing plug inserted at both ends, and the sealing plug, the reinforcing member, and the tower plate surround to form a sealed chamber, which is filled with sealant. The connecting assembly includes end flanges, each of the tower sections is provided with an end flange at its top and bottom, and adjacent end flanges are spaced apart along the circumferential direction; each end flange is provided with a plurality of mounting holes at its top, the plurality of mounting holes are spaced apart along the circumferential direction, and a second bolt is inserted into the mounting holes of adjacent end flanges along the axial direction, and a second nut is threaded onto the second bolt; A tenon and mortise joint is provided between adjacent end flanges along the circumferential direction; Both ends of the end flange are provided with dovetail grooves; the tenon and mortise part is a sheet structure, and both ends of the tenon and mortise part are provided with dovetail blocks, which are inserted into the dovetail grooves.

2. The irregularly shaped combined wind turbine tower according to claim 1, characterized in that, A plurality of first reinforcing ribs are connected between the tower plate and the end flange, and the plurality of first reinforcing ribs are arranged at intervals along the circumference.

3. The irregularly shaped combined wind turbine tower according to claim 2, characterized in that, The first reinforcing ribs on the same end flange are divided into two groups, and the two groups of first reinforcing ribs are arranged alternately in the circumferential direction and at different heights along the axial direction of the tower section.

4. The irregularly shaped combined wind turbine tower according to claim 1, characterized in that, Each of the tower sections has multiple second reinforcing ribs on its inner sidewall. The second reinforcing ribs extend in a direction parallel to the axis of the tower section, and the multiple second reinforcing ribs are arranged at circumferential intervals.

5. The irregularly shaped combined wind turbine tower according to claim 1, characterized in that, Each of the tower sections has multiple third reinforcing ribs on its inner sidewall. The third reinforcing ribs are arc-shaped and are arranged at intervals along a direction parallel to the axis of the tower section.

6. The irregularly shaped sheet combined wind turbine tower according to claim 1, characterized in that, Sealing strips are provided between adjacent tower sections, between the reinforcing member and the vertical flange, and the sealing strips extend in a direction parallel to the axis of the tower section.

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