Towers and tower components

Abstract

The present application provides a tower component and a tower constructed by the tower component. The tower may include a base, a tower portal section, prestressed strands, a number of tower components that can be prefabricated in vertical segments, and a top tower section. The tower component may include a first tower section and a second tower section. The first tower section and the second tower section may be stacked alternately to increase the height of the tower. The first tower section is formed by stacking standardized first cylindrical bodies. The second tower section is formed by stacking standardized second cylindrical bodies. The first cylindrical body and the second cylindrical body can be flexibly combined to meet the requirements for towers of different models and hub heights, and have strong applicability. The tower components and all tower exteriors in the top tower are straight cylinders, with uniform reinforcement, unified required formwork, reduced difficulty in formwork construction, and high prefabrication efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of high towers for onshore wind turbine generator sets, and in particular to a tower and tower components. Background Art

[0002] Currently, for medium and large onshore wind turbines in areas with high wind shear, increasing hub height is often employed to achieve better profitability. For high-rise towers with hub heights of 120 meters and above, traditionally steel towers are primarily used. Limited by the dimensional constraints of long-distance transportation of steel tower sections, the maximum base diameter of conventional steel towers is unlikely to exceed 4.3-4.5 meters. Consequently, support is being developed for flexible steel tower technology, which increases tower height while maintaining the same base diameter and only increasing the wall thickness. This reduces the structural efficiency of the tower and creates resonance. Using damping devices to mitigate resonance results in power generation losses in the resonant wind speed range, reducing the wind farm's potential optimal profitability. Furthermore, vibration issues with flexible steel towers can lead to a continuous reduction in bolt preload, making frequent maintenance essential. This makes it difficult to achieve optimal design, construction, lifecycle maintenance, and economic returns for flexible steel towers exceeding 120 meters.

[0003] As wind power enters the competitive bidding and grid parity era, several rigid tower solutions, in addition to flexible towers, have emerged to optimize the return on investment for wind farms operating in low and high wind shear conditions. These include large-diameter segmented steel towers, steel truss towers, and precast prestressed concrete towers. Large-diameter segmented steel towers and steel truss towers both face the challenge of frequent maintenance due to fatigue-induced loosening of connecting bolts. Furthermore, the large number of bolted connections places very high demands on component machining precision and processing equipment. This makes construction cycles and costs difficult to compare with flexible steel towers, making it impossible to quickly develop cost-effective mass-produced products. In contrast, precast concrete towers already possess the technical conditions and market environment for mass production.

[0004] Existing precast concrete towers utilize prefabricated, prestressed, assembled towers, but with a different assembly method. To ensure the integrity of the assembled structure, most precast segmented towers require grouting at the joints, which consumes expensive grouting material and increases on-site assembly time. For full-circular precast segments without vertical segmentation, the transportation of large-diameter annular towers is restricted, hindering the large-scale development of prefabrication and assembly. Furthermore, existing concrete towers all or partially utilize a tapered structure with an outer diameter that gradually changes with height. This increases the consumption of formwork and tooling during prefabrication, increases the prefabrication site footprint, and reduces the flexibility of small wind farm construction. Summary of the Invention

[0005] In order to solve the technical problems of the lack of gradual change in the external diameter of existing precast concrete towers, such as the consumption of formwork and tooling, the large area occupied by the prefabrication site, and the low flexibility, the present application discloses a tower structure, including: a plurality of first tower sections, each of the first tower sections including at least one first cylindrical body with the same inner diameter; and a plurality of second tower sections, each of the second tower sections including at least one second cylindrical body with a gradual inner diameter, wherein the first tower sections and the second tower sections are alternately connected, and the cross-sectional dimensions at both ends of the second tower section match the cross-sectional dimensions of the first tower section.

[0006] In some embodiments, the outer diameter of the at least one second cylindrical body in each second tower section is the same, and the inner diameter increases or decreases uniformly.

[0007] In some embodiments, the plurality of first tower sections include at least one stage of first tower sections, each stage of first tower sections has the same outer diameter, and the plurality of second tower sections include at least one stage of second tower sections, each stage of second tower sections has the same outer diameter.

[0008] In some embodiments, the first cylindrical body is formed by a whole ring or at least two assembling pieces spliced ​​together along the circumferential direction, and the second cylindrical body is formed by a whole ring or at least two assembling pieces spliced ​​together along the circumferential direction.

[0009] In some embodiments, at least two assembling pieces of the first cylindrical body are spliced ​​together through a circumferential prestressed connector, and at least two assembling pieces of the second cylindrical body are spliced ​​together through a circumferential prestressed connector.

[0010] In some embodiments, the butt joint surfaces of any two adjacent cylindrical bodies are inclined downward from the inner cavity to the outer wall.

[0011] The present application also discloses a tower, comprising: a base; a tower gate section, fixedly arranged on the base; the tower component described in the present application, fixedly arranged on the tower gate section, and having a cross-sectional diameter gradually decreasing in a direction away from the tower gate section; a top tower section, fixedly connected to the tower component; a steel tower section, fixed on the top tower section; and a plurality of prestressed strands, arranged along the circumferential direction of the inner wall of the tower component and the top tower section, to apply prestress to the top tower section, the tower component and the tower gate section.

[0012] In some embodiments, one end of the plurality of prestressed strands is connected to the top tower section, and the other end is connected to the base, and the plurality of prestressed strands pass through the base to the top tower section.

[0013] In some embodiments, the top tower section and the steel tower section are connected using vertical prestressed connectors.

[0014] In some embodiments, the cross-sectional area of ​​the tower door section gradually decreases with increasing vertical height.

[0015] In some embodiments, the butt joint surfaces of any two adjacent components among the tower door section, the tower frame member, the top tower section, and the steel tower section are inclined downward from the inner cavity to the outer wall.

[0016] In summary, the present application provides a tower member and a tower constructed using the tower member. The tower may include a base, a tower portal section, prestressed strands, the tower member, a top tower section, and a steel tower section. The tower member may include a first tower section and a second tower section. The first tower section and the second tower section may be stacked alternately to increase the height of the tower. The first tower section is formed by stacking standardized first cylindrical bodies. The second tower section is formed by stacking standardized second cylindrical bodies. The first cylindrical body and the second cylindrical body may be flexibly combined to meet the requirements of towers of different models and hub heights, and have strong applicability. The exterior of all cylindrical bodies in the tower member and the top tower is a straight cylinder, with uniform reinforcement, uniform required formwork, reduced difficulty in formwork construction, and high prefabrication efficiency. First cylindrical bodies and / or second cylindrical bodies of the same diameter can be used interchangeably between different towers, and multiple working surfaces can be started simultaneously, with strong versatility. Based on localized tower production, transportation, construction conditions, and construction schedule requirements, we can provide the optimal height ratios for cast-in-place, prefabricated, and steel towers, with a high degree of customization. Based on the scale of the prefabrication plant, prefabricated components can be uniformly constructed with vertical segments to meet the requirements for long-distance transportation of prefabricated components and provide a wide coverage area. No grouting or grouting connections are required between straight sections of the same diameter, saving hoisting and installation time and the risk of operational errors. Grouting adjustments are allowed between each level, relaxing the construction tolerance and shortening the installation cycle. External prestressed strand tensioning is simple and fast, requiring no grouting and minimizing prestress loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 shows an elevation view of a tower member and a tower provided according to an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of a tower member and a tower provided according to an embodiment of the present application is shown;

[0019] Figure 3 yes Figure 2 Detailed view of area A in the middle;

[0020] Figure 4A and 4B A schematic diagram showing the assembly pieces provided in an embodiment of the present application assembled into a first cylindrical body is shown;

[0021] Figure 5A 、 5B5C and 5D are schematic diagrams showing the docking surface provided according to an embodiment of the present application; Figure 6A and Figure 6B Shown are structural schematic diagrams of two tower doors provided according to embodiments of the present application;

[0022] Figure 7A and Figure 7B The figure shows the positional relationship between a prestressed strand and a tower provided in an embodiment of the present application;

[0023] Figure 8 Shown Figure 2 Detailed view of area B in the middle;

[0024] Figure 9 A tower elevation view with a tower door section elevated according to an embodiment of the present application is shown; and

[0025] Figure 10 A vertical view of a tower with an extended steel tower section provided according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] The following description provides specific application scenarios and requirements of the present application, with the purpose of enabling those skilled in the art to make and use the content of this application. Various local modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this application. Therefore, this application is not limited to the embodiments shown, but is intended to be of the widest scope consistent with the claims.

[0027] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting.

[0028] These and other features of the present application, as well as the operation and function of the related elements of the structure, and the economy of assembly and manufacture of the components, can be significantly improved in view of the following description. Reference is made to the accompanying drawings, all of which form a part of this application. However, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this application.

[0029] The following description may significantly improve these and other features of the present application, as well as the operation and function of the related elements of the structure, and the economic efficiency of the assembly and manufacture of the components. All of which are incorporated herein by reference in their entirety into the accompanying drawings, which form a part of this application. However, it should be expressly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this application. It should also be understood that the drawings are not drawn to scale.

[0030] Figure 1A schematic diagram of a tower member 200 provided according to an embodiment of the present application is shown. The tower member 200 can be used to construct a tower. Such towers may include, but are not limited to, wind turbine towers, solar panel towers, and telecommunications base station towers. Specifically, the tower member 200 may include a first tower section 300 and a second tower section 400. The tower member 200 may be constructed by alternatingly connecting multiple first tower sections 300 and multiple second tower sections 400. Figure 2 A cross-sectional view of a tower component 200 provided according to an embodiment of the present application is shown. Figure 3 yes Figure 2 Detailed view of area A. Reference Figure 3 The first tower section 300 may include at least one first cylindrical body 310 . The second tower section 400 may include at least one second cylindrical body 410 .

[0031] For the sake of convenience, it is necessary to define "upward" and "downward" in the following description of this application. According to the tower door 100 and the tower structure 200 described in this application, as shown in FIG. Figure 1 As shown, the ground is taken as the horizontal plane, the axis L of the tower 100 (perpendicular to the ground) is taken as the height direction, the direction away from the ground is upward, and the direction close to the ground is downward.

[0032] The first cylindrical body 310 can be a concrete cylindrical body. The first cylindrical body 310 can be a cylindrical tube with a circular ring cross section. That is, the inner diameter of the first cylindrical body 310 is a cylindrical surface and the outer diameter is a cylindrical surface. In some embodiments, the first cylindrical body 310 can be spliced ​​together by at least two assembling pieces along the circumferential direction. For example, when the outer wall diameter of the first cylindrical body 310 exceeds the maximum transportation size, the first cylindrical body 310 can be prefabricated in vertical slices, and the number of slices is greater than or equal to 2. After the prefabricated vertical slices are transported to the installation site, the vertical slices are combined and spliced ​​in the circumferential direction to form a complete first cylindrical body 310 using circumferential prestressed connectors. In this way, the problem that the first cylindrical body 310 is too large to be transported can be solved. Secondly, prefabrication of slices is more conducive to long-distance transportation and has a wide radiation area.

[0033] Figure 4A FIG2 shows a schematic diagram of a first cylindrical body 310 formed by assembling pieces 311 according to an embodiment of the present application. Figure 4A The first cylindrical body 310 can be divided into two assembling pieces 311 along the longitudinal direction. The first cylindrical body 310 is formed by splicing the two assembling pieces 311 along the circumferential direction into a cylindrical body. Any two adjacent assembling pieces 311 can be connected by a circumferential prestressed connector 170. Figure 4B FIG2 shows a schematic diagram of another assembly piece 311 provided in an embodiment of the present application assembled into a first cylindrical body 310. Figure 4B, the first cylindrical body 310 can be divided into three assembling pieces 311 along the longitudinal direction. The first cylindrical body 310 is formed by splicing the three assembling pieces 311 along the circumferential direction. Any two adjacent assembling pieces 311 can be connected by a circumferential prestressed connector 170. In some embodiments, the first cylindrical body 310 can be an independent and complete cylindrical body and does not need to be assembled. For example, when the outer wall diameter of the first cylindrical body 310 does not exceed the maximum transportable size, vertical segmentation can be selected.

[0034] The upper surface and lower surface of the first cylindrical body 310 can be tilted downward from the inner cavity to the outer wall to prevent rainwater from entering the interior of the tower 100. For example, after assembly is completed, for any first cylindrical body 310, the relative elevation of its inner top is higher than the relative elevation of its outer top; the relative elevation of its inner bottom is higher than the relative elevation of its outer bottom; in this way, when the two first cylindrical bodies 310 are docked, the docking position will form a natural rainproof structure. The upper surface and lower surface of the two interconnected first cylindrical bodies 310 match each other to ensure that the lower surface of one first cylindrical body 310 and the upper surface of another first cylindrical body 310 can dock. For the sake of convenience of description, in the following description of this application, "docking surface" is used to represent the surface formed by the docking position of the two cylindrical bodies. Figure 5A FIG1 shows a schematic diagram of a docking surface 1 provided according to an embodiment of the present application. Figure 5A As shown, the butting surfaces 1 of the two first cylindrical bodies 310 may be stepped surfaces. Figure 5B FIG. 2 shows a schematic diagram of another docking surface 2 provided according to an embodiment of the present application. Figure 5B As shown, the butt joint surfaces 2 of the two first cylindrical bodies 310 can be inclined surfaces. The butt joint surfaces are inclined downward from the inner cavity to the outer wall. When rainwater appears on the butt joint surfaces (for example, rainwater flows down along the inner wall of the first cylindrical body 310 and enters the butt joint surfaces through the gap at the butt joint), the rainwater can flow along the butt joint surfaces to the outer walls of the cylindrical bodies. In this way, rainwater will not accumulate inside the tower, which would affect the electrical equipment inside the tower if rainwater drips from the inside of the tower.

[0035] The first cylindrical bodies 310 can be graded by size. First cylindrical bodies 310 of the same level have the same size. First cylindrical bodies 310 of different levels have different sizes. The size may include the inner wall diameter and / or outer wall diameter of the cylindrical body. In some embodiments, the first cylindrical bodies 310 can be graded by outer wall diameter. For example, the first cylindrical bodies 310 can be graded according to outer wall diameter into: 900 cm class, 800 cm class, and 700 cm class. The 900 cm class may refer to first cylindrical bodies 310 with an outer diameter of 900 cm and an inner diameter of 800 cm. In some embodiments, the heights of first cylindrical bodies 310 of the same level can be the same. A first tower section 300 can be formed by stacking and connecting several first cylindrical bodies 310 of the same level. Taking the 900 cm class as an example, a 900 cm class first tower 300 can be formed by stacking and connecting several 900 cm class first cylindrical bodies 310. In this way, the first cylindrical bodies 310 of the same level have the same size, which allows for standardized production, uniform reinforcement, uniform formwork, reduced formwork construction difficulty, and high prefabrication efficiency. First cylindrical bodies 310 of the same level can be used interchangeably between different towers, allowing for simultaneous operation of multiple working surfaces, demonstrating high versatility.

[0036] The second cylindrical body 410 can be graded by size. Second cylindrical bodies 410 of the same grade have the same size. Second cylindrical bodies 410 of different grades have different sizes. The size may include the inner wall diameter and / or outer wall diameter of the second cylindrical body 410. In some embodiments, the second cylindrical body 410 can be graded by outer wall diameter. For example, the second cylindrical body 410 can be graded by outer wall diameter into: 900 cm grade, 800 cm grade, and 700 cm grade. The 900 cm grade refers to a second cylindrical body 410 with an outer wall diameter of 900 cm. The grading standards for the second cylindrical body 410 can be the same as the grading standards for the first cylindrical body 310. For example, a 900 cm grade second cylindrical body 410 and a 900 cm grade first cylindrical body 310 have the same outer wall diameter of 900 cm. Thus, when a 900 cm grade second cylindrical body 410 and a 900 cm grade first cylindrical body 310 are connected, a straight cylindrical section with an outer wall diameter of 900 cm is formed. The tiered design ensures that the outer wall diameters of the first and second cylindrical bodies 310 and 410 at the same level are identical, enabling standardized production and uniform reinforcement. This reduces formwork construction complexity and increases prefabrication efficiency. The first and second cylindrical bodies 310 and 410 at the same level can be interchanged between different towers, allowing for simultaneous operation of multiple working surfaces and providing high versatility.

[0037] The second cylindrical body 410 can be a concrete cylindrical body with a circular cross-section. In some embodiments, the second cylindrical body 410 can be spliced ​​together along the annular direction by at least two assembling pieces. The two assembling pieces can also be connected by the annular prestressed connector. Of course, in some embodiments, the second cylindrical body 410 can also be an independent and complete cylindrical body that does not need to be assembled. The process and advantages of vertically slicing and splicing the second cylindrical body 410 can be the same or similar to the first cylindrical body 310, and for the sake of brevity, they will not be described again here.

[0038] The upper and lower surfaces of the second cylindrical body 410 can slope downward from the inner cavity to the outer wall to prevent rainwater from entering the interior of the tower 100. For example, after complete assembly, the relative elevation of the inner top of the second cylindrical body 410 is higher than the relative elevation of the outer top; and the relative elevation of the inner bottom is higher than the relative elevation of the outer bottom. In this way, when the two cylindrical bodies are connected, a natural rainproof structure is formed at the connection surface. Figure 5C FIG. 1 shows a schematic diagram of a docking surface 3 provided according to an embodiment of the present application. Figure 5C As shown, the interface 3 between the second cylindrical body 410 and the first cylindrical body 310 may be a stepped surface. Figure 5D FIG. 4 shows a schematic diagram of another docking surface 4 provided according to an embodiment of the present application. Figure 5D As shown, the interface 4 between the second cylindrical body 410 and the first cylindrical body 310 can be an inclined surface. The above-mentioned interface is inclined downward from the inner cavity to the outer wall. When rainwater appears on the interface (for example, rainwater falls on the Figure 5C Or the upper surface of the second cylindrical body 410 shown in 5D), rainwater can flow along the docking surface to the outer wall of the cylindrical body, so that rainwater will not accumulate inside the tower, and rainwater dripping from the inside of the tower will affect the electrical equipment inside the tower.

[0039] Continue to refer Figure 3The second cylindrical body 410 can be a cylindrical body with a gradually changing inner wall diameter to connect two first tower sections 300 of different levels. For example, when it is necessary to connect an 800 cm first tower section 300 and a 900 cm first tower section 300, a 900 cm second cylindrical body 410 can be installed between the 800 cm first tower section 300 and the 900 cm first tower section 300. The outer wall diameter of the 900 cm second cylindrical body 410 is the same as the diameter of the 900 cm first tower section 300 below it, both of which are 900 cm. The inner wall diameter of the 900 cm second cylindrical body 410 is the same as the outer wall diameter of the 800 cm first tower section 300 above it, both of which are 800 cm. In this way, the 900cm-level second cylindrical body 410 and the 900cm-level first tower section 300 are connected to form a cylindrical section with an outer diameter of 900cm and a straight cylinder on the outside. The reinforcement is evenly distributed, the required formwork form is unified, the difficulty of formwork construction is reduced, and the prefabrication efficiency is high. In some embodiments, the inner diameter of the second cylindrical body 410 can be evenly increased or decreased. For example, the inner wall diameter of the second cylindrical body 410 decreases evenly in the direction of increasing height. In this way, the inner diameter of the upper surface of the second cylindrical body 410 is small enough; the upper surface of the second cylindrical body 410 can provide support for the smaller first tower section 300 on its upper layer. Of course, in order to facilitate connection with the first cylindrical body 310, bosses can also be provided at both ends of the second cylindrical body 410.

[0040] In some embodiments, the tower member 200 may include several different levels of first tower sections 300 and second tower sections 400. The tower member 200 may be formed by alternately stacking and connecting the different levels of first tower sections 300 and second tower sections 400. For example, Figure 2In the tower structure 200, the first tower section 300 and the second tower section 400 are divided into different levels of combinations according to the different cross-sectional diameters of the towers. From the bottom to the top of the tower 100 (i.e., in the direction of increasing height), the cross-sectional outer diameters of the tower sections at different levels decrease step by step; the cross-sectional outer diameters of the tower sections at the same level are the same and the heights of the individual units are the same. The height of the tower structure 200 is determined by the number of layers of the first tower section 300 and the second tower section 400 that are stacked and connected. With this design, construction personnel can flexibly adjust the elevation after stacking, the number of stacked layers, and the number of towers according to the design requirements of the wind turbine for the tower. The first cylindrical body 310 and the second cylindrical body 410 can be flexibly combined to meet the requirements of towers of different models and hub heights, and have strong applicability. The exterior of all towers in the tower structure 200 is a straight cylinder with uniform reinforcement, uniform required formwork, reduced formwork construction difficulty, and high prefabrication efficiency. First cylindrical bodies 310 and / or second cylindrical bodies 410 of the same diameter can be used interchangeably between different towers, enabling simultaneous operation on multiple working surfaces and enhancing versatility. Prefabricated components can be uniformly constructed using vertically segmented structures, tailored to the scale of the prefabrication plant, to meet the requirements for long-distance transportation and achieve a wide coverage area. No grouting or grouting connections are required between straight cylindrical sections of the same diameter, reducing hoisting and installation time and the risk of operational errors. Grouting adjustments between levels are permitted, ensuring high tolerance for construction errors and a short installation cycle.

[0041] Figure 1 Also shown is a structural schematic diagram of a tower 100 provided according to some embodiments of the present application. Figure 2 yes Figure 1 Cross-sectional view. Tower 100 can be a support tower for a wind turbine. The support tower for a wind turbine can be used in low wind speed areas and / or high wind speed areas. The support tower for a wind turbine can be used in high tower areas or low tower areas. Tower 100 can be used in onshore wind farms or offshore wind farms. As an example, the following description of this application uses an onshore wind farm tower as an example to describe the function of tower 100 in this application.

[0042] Specifically, tower 100 may include a base 110, a tower portal section 120, a tower member 200, a top tower section 130, a steel tower section 140, and prestressed strands 150. Tower member 200 is a prefabricated tower section. It is formed by alternately splicing prefabricated first and second tower sections 300, 400, and its size gradually decreases as it moves away from tower portal section 120.

[0043] The base 110 can provide ground support for the portal section 120, tower member 200, top tower section 130, steel tower section 140, and prestressed strands 150. The portal section 120, tower member 200, top tower section 130, and steel tower section 140 can be stacked and connected sequentially on the base 110. The portal section 120, tower member 200, top tower section 130, and steel tower section 140 can be connected via prestressed connectors. The base 110 can also serve as an anchor point for the prestressed strands 150. The base 110 can be a gravity foundation. The gravity foundation can be constructed using cast-in-place concrete.

[0044] The tower gate section 120 is fixedly mounted on the base 110. One end of the tower gate section 120 is connected to the base 110, and the other end is connected to the tower member 200. The tower gate section 120 can be used to connect the base 110 and the tower member 200. In some embodiments, the tower gate section 120 can be a prefabricated independent cylindrical body. In some embodiments, the tower gate section 120 can be manufactured together with the base 110. For example, if the base 110 is onshore, the tower gate section 120 can be cast in concrete on-site at the interface of the prefabricated base 110.

[0045] Figure 6A and Figure 6B A schematic structural diagram of two tower doors 120 provided according to an embodiment of the present application is shown. The tower door section 120 may be a cylindrical body with an opening 121 provided on the cylinder wall. The opening 121 is the door of the tower 100. The cylinder may be a concrete cylinder. The cross-section of the cylinder may be a circular ring. During production, designers can design the shape and size of the tower door section 120 according to design requirements. In some embodiments, the tower door section 120 may be a cylindrical cylinder, that is, the inner wall and the outer wall of the tower door section 120 are both cylindrical surfaces. In some embodiments, the cross-sectional area of ​​the tower door section 120 may gradually decrease with increasing height. In some embodiments, the tower door section 120 may be a cylindrical body with a conical outer wall and a cylindrical inner wall. For example, in Figure 6A In some embodiments, the inner diameter of the tower door section 120 can be constant and the outer diameter can decrease as the height increases. In some embodiments, the tower door section 120 can be a cylindrical body with both the outer wall and the inner wall being conical. Figure 6B In the embodiment, the outer wall diameter of the tower door section 120 may decrease as the vertical height increases, and the inner wall diameter may decrease as the vertical height increases.

[0046] The tower gate section 120 can be raised according to design requirements. Figure 9 A tower elevation view with a tower door section 120 elevated according to an embodiment of the present application is shown.

[0047] The steel tower section 140 is at the top of the tower 100. The steel tower section 140 is fixed to the top tower section 130. The number of steel tower sections 140 can be one or more. The number of steel tower sections can be set according to design requirements to lengthen the steel tower section 140. Figure 10 A tower elevation view of a lengthened steel tower section 140 provided in accordance with an embodiment of the present application is shown.

[0048] Continue to refer Figure 2 The top tower section 130 is fixedly connected to the tower member 200 . Figure 8 Shown Figure 2 Detailed view of area B in the center. The top tower section 130 can include at least one precast concrete tower. The top tower section 130 is connected to the steel tower section 140 above it via vertical prestressed connectors 180. The lower end of the top tower section 130 is connected to the first tower section 300. The top tower section 130 is provided with an interface for securing prestressed strands 150. The prestressed strands 150 are anchored to the top tower section 130 through this interface.

[0049] The number of prestressed strands 150 can be one or more, and steel can be selected as the material. The prestressed strands 150 can be arranged along the circumference of the inner wall of the tower door section 120, the tower member 200, and the top tower section 140. The planar arrangement of the prestressed strands 150 does not interfere with the tower door section 120 to ensure that the door 121 on the tower door section 120 is not blocked. The prestressed strands 150 apply prestress to the tower door section 120, the top tower section 140, and the tower member 200. In some embodiments, the prestressed strands 150 can be evenly arranged along the circumference of the inner wall of the tower door section 120, the tower member 200, and the top tower section 140 to apply uniform prestress to the top tower section 140, the tower member 200, and the tower door section 120.

[0050] The prestressed strand 150 can be an inner external prestressed strand. The prestressed strand 150 can pass through the base 110 to the top tower section 140. One end of the prestressed strand 150 can be anchored on the top tower section 140, and the other end can be anchored on the base 110. In this way, there is no need to leave holes inside other towers, and the grouting process is omitted. The prestressed strand 150 generates tension on the top tower section 140 and the base 110. The tensioning force acts on the top tower section 140 and the base 110 to generate prestress between the tower located between the base 110 and the top tower section 140, including the tower door section 120, to ensure the structural stability of the tower 100. The prestressed strand 150 is tensioned and formed in one step, saving installation time.

[0051] Figure 7A FIG. 1 shows the positional relationship between a prestressed strand 150 and a tower according to some embodiments of the present application. Figure 7AAs shown, at certain positions, the prestressed strands 150 are at a certain distance from the inner walls of the first tubular body 310 and the second tubular body 410 in the tower member 200 . Figure 7B FIG. 1 shows another positional relationship between a prestressed strand 150 and a tower according to some embodiments of the present application. Figure 7B As shown, at certain locations, the prestressed strands 150 partially contact the inner side of the second cylindrical body 410. In some embodiments, the inclination angle of the prestressed strands 150 may have a slight sudden change at the contact location.

[0052] When erecting the tower 100, the prefabricated tower tubes in segments are assembled on site into a full ring tower tube; the prestressed connectors are pulled in pairs at the vertical segment connections to apply the preload force required by the design to each segment; the assembled full ring tower tubes are hoisted in turn to the design elevation; the non-segmented tower tubes are continued to be installed until the top tube section; the prestressed strands are installed and tensioned; then the steel tower tube is hoisted and connected to the top tower tube section through the vertical prestressed connectors; after hoisting the steel tower tube section to the design elevation, the tower erection is completed and the wind turbine generator set is awaited for subsequent installation.

[0053] In some embodiments, the inner top elevation of the interface between any two adjacent cylinders and / or sections in tower 100 is higher than the outer top elevation, and / or the inner bottom elevation is higher than the outer bottom elevation. For example, the interface between any two adjacent tower tubes in tower 100 can slope downward from the inner cavity to the outer wall to prevent rainwater from entering the interior of tower 100. The tower tubes in tower 100 can be prefabricated in sections as needed. For the sake of brevity, the shape of the interface and the structure of the sections will not be further described.

[0054] In summary, the present application provides a prestressed concrete wind turbine tower 100 with a straight tower that can be vertically divided into segments and has a gradually variable diameter. The tower 100 can be applied to onshore wind turbine generator systems. The tower may include a base 110, a tower portal section 120, a prestressed strand 150, a number of tower components 200 that can be vertically divided into segments and prefabricated, and a top tower section 130. The tower component 200 may include a first tower section 300 and a second tower section 400. The first tower section 300 and the second tower section 400 can be stacked alternately to increase the height of the tower 100. The first tower section 300 is composed of a stack of standardized first cylindrical bodies 310. The second tower section is composed of a stack of standardized second cylindrical bodies 410. The first cylindrical body 310 and the second cylindrical body 410 can be flexibly combined to meet the tower requirements for different models and wheelhouse heights, and has strong applicability. The exterior of all towers within the tower structure 200 and the top tower 130 are straight tubes, with uniform reinforcement, uniform required formwork forms, reduced formwork construction difficulty, and high prefabrication efficiency. The first cylindrical body 310 and / or the second cylindrical body 410 of the same diameter can be used interchangeably between different towers, and multiple working surfaces can be started at the same time, with strong versatility. According to the localized tower production, transportation, construction and construction conditions and construction period requirements, the relatively optimal cast-in-place, prefabricated, and steel tower height ratios can be provided, with a high degree of customization. According to the scale of the prefabrication plant, a vertical segmented structure can be uniformly adopted for prefabricated components to meet the long-distance transportation requirements of prefabricated components and a wide radiation area. There is no need for grouting / seating grouting connections between straight sections of the same diameter, saving hoisting and installation time and the risk of operational errors. Seating grouting adjustments are allowed between each level, relaxing the construction tolerance, and shortening the installation period. The tensioning construction of the external prestressed strands is simple and fast, without the need for grouting, reducing prestress loss. The tower components and tower described in this application can reduce the consumption of formwork and tooling, shorten the construction period, and provide an optimized solution for improving the material utilization efficiency of precast concrete tower structures and improving and developing the efficiency and scale of prefabrication and assembly.

[0055] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not explicitly stated herein, those skilled in the art will understand that this application is intended to encompass various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0056] Furthermore, certain terms in this application have been used to describe embodiments of the present application. For example, “one embodiment,” “an embodiment,” and / or “some embodiments” mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of the present application. Therefore, it is emphasized and should be understood that two or more references to “an embodiment,” “one embodiment,” or “an alternative embodiment” in various portions of this specification do not necessarily refer to the same embodiment. Furthermore, particular features, structures, or characteristics may be appropriately combined in one or more embodiments of the present application.

[0057] It should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and for the purpose of simplifying the present application, the present application sometimes combines various features in a single embodiment, drawing or its description. Alternatively, the present application disperses various features across multiple embodiments of the present application. However, this does not mean that the combination of these features is necessary. When reading the present application, it is entirely possible for those skilled in the art to extract some of the features and understand them as separate embodiments. In other words, the embodiments in the present application can also be understood as the integration of multiple secondary embodiments. This is also true when the content of each secondary embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0058] In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the present application should be understood as being modified in some cases by the terms "about," "approximately," or "substantially." For example, unless otherwise indicated, "about," "approximately," or "substantially" can mean a ±20% variation of the value to which it describes. Therefore, in some embodiments, the numerical parameters listed in the written description and the attached claims are approximate values, which can vary depending upon the desired properties sought to be obtained in a particular embodiment. In some embodiments, the numerical parameters should be interpreted in light of the number of reported significant digits and by applying ordinary rounding techniques. Although broad numerical ranges and parameters setting forth some embodiments of the present application are approximate, the specific examples set forth numerical values ​​as precisely as possible.

[0059] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, articles, etc., cited herein is hereby incorporated by reference in its entirety for all purposes, except for any prosecution document history related thereto, any equivalent that may be inconsistent or conflicting with this document, or any equivalent prosecution document history that may have a limiting effect on the broadest scope of the claims now or hereafter associated with this document. For example, if there is any inconsistency or conflict between the description, definition, and / or use of terms associated with any incorporated material and the terminology, description, definition, and / or use associated with this document, the terminology in this document shall control.

[0060] Finally, it should be understood that the embodiments of the application disclosed herein are illustrations of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations based on the embodiments in the present application to implement the applications in the present application. Therefore, the embodiments of the present application are not limited to those embodiments that have been precisely described in the application.

Claims

1. A tower structure, comprising: A plurality of cylindrical bodies that can be connected vertically, the plurality of cylindrical bodies consisting of: a plurality of first tower sections, each of the first tower sections comprising at least one first cylindrical body, each of the plurality of first tower sections having a uniform inner diameter and a uniform outer diameter; wherein each first cylindrical body comprises two end surfaces, and in an upright state, the relative elevation of the inner wall of each end surface of the first cylindrical body is higher than the corresponding relative elevation of the outer wall of the end surface; and a plurality of second tower sections, each of the second tower sections being an independent tower section and comprising at least one second cylindrical body; wherein the outer diameter of the second tower section remains consistent between both ends, the inner diameter gradually decreases along the height direction, and the wall thickness gradually increases along the height direction from bottom to top; in an upright state, the relative elevation of the inner wall of the end face of the second tower section is higher than the corresponding relative elevation of the outer wall of the end face; The two ends of the second tower section are respectively connected to two first tower sections with different outer diameters, and the outer diameter of one end thereof is the same as the outer diameter of the adjacent first tower section; at the connection surface between the first tower section and the second tower section, the relative elevation of the inner wall is higher than the corresponding relative elevation of the outer wall; The plurality of first tower sections include at least one stage of first tower sections, and the outer diameters of the first tower sections of each stage are the same; and the plurality of second tower sections include at least one stage of second tower sections, and the outer diameters of the second tower sections of each stage are the same; The first cylindrical body is formed by a whole ring or at least two assembled pieces spliced ​​together along the circumferential direction, and the second cylindrical body is formed by a whole ring or at least two assembled pieces spliced ​​together along the circumferential direction; At least two assembling pieces of the first cylindrical body are spliced ​​together through a circumferential prestressed connecting piece, and at least two assembling pieces of the second cylindrical body are spliced ​​together through a circumferential prestressed connecting piece.

2. A tower comprising: base; a tower gate section, fixedly arranged on the base; The tower member according to claim 1 is fixedly mounted on the tower gate section, and has a cross-sectional diameter that decreases step by step in a direction away from the tower gate section; A top tower section, fixedly connected to the tower member; a steel tower section fixed to the top tower section; and A plurality of prestressed strands are arranged along the circumferential direction of the inner walls of the tower member and the top tower section, and apply prestress to the top tower section, the tower member and the tower door section.

3. The tower as claimed in claim 2, wherein one end of the plurality of prestressed strands is connected to the top tower section, and the other end is connected to the base, and the plurality of prestressed strands pass through the base to the top tower section.

4. The tower as claimed in claim 2, wherein the top tower section and the steel tower section are connected by vertical prestressed connectors.

5. The tower according to claim 2, wherein the cross-sectional area of ​​the tower portal section gradually decreases as the vertical height increases.

6. The tower according to claim 2, wherein the butt joint surfaces of any two adjacent components among the tower door section, the tower member, the top tower section and the steel tower section are inclined downward from the inner cavity to the outer wall.

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