A tower adapter section and a steel-concrete tower

Abstract

The utility model discloses a tower adapter section and steel -concrete tower, apply to wind generating set tower technical field, and the tower adapter section includes a plurality of adapter section monomer and sets up the reverse balance flange subassembly on the adapter section monomer, and each adapter section monomer can form tower drum structure in turn around, and the reverse balance flange subassembly sets up at the jointing gap side of adapter section monomer, and the extension direction of jointing gap is parallel to the axial direction of tower drum structure, and the reverse balance flange subassembly includes flange plate, web and fastener, and the left and right sides of jointing gap are equipped with flange plate and web, and web is along the axial arrangement of adapter section monomer, and fastener is used for the flange plate on the tension of adjacent adapter section monomer, to make the end face of web on adjacent adapter section monomer adhere. The tower adapter section provided by the utility model not only is favorable to the transfer of adapter section monomer, solves the problem that large diameter tower adapter section can not transport integrally, and is favorable to the recovery of tower drum structure size, guarantees the use effect, and improves the reliability.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine tower technology, and in particular to a tower transition section and a steel-concrete tower. Background Technology

[0002] Steel-concrete composite towers, due to their high load-bearing capacity, can solve the problem that traditional steel towers cannot meet the tower height requirements of high-power wind turbines, and can help large-megawatt units obtain more wind resources. They are receiving increasing attention and are beginning to be used on a large scale.

[0003] In related technologies, the tower transition section, as an important component connecting the concrete section and the steel section of a reinforced concrete tower, plays a crucial role in the reinforced concrete tower. However, due to road transportation limitations, large-diameter tower transition sections cannot be transported as a whole; furthermore, when the tower transition section is connected to the concrete section, leakage and other problems are prone to occur due to material limitations.

[0004] Therefore, how to improve the reliability of tower transition sections is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a tower transition section and a steel-concrete tower, which can improve transportation convenience and reduce water leakage.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tower transition section includes a plurality of transition section units and a reverse balancing flange assembly disposed on the transition section units. Each of the transition section units can be sequentially arranged to form a tower structure. The reverse balancing flange assembly is disposed on the side of the joint of the transition section unit, and the extension direction of the joint is parallel to the axial direction of the tower structure.

[0008] The reverse balancing flange assembly includes a flange plate, stiffening plates, and fasteners. The flange plate and stiffening plates are provided on both the left and right sides of the joint. The stiffening plates are arranged along the axial direction of the transition section unit. The fasteners are used to tighten the flange plates on adjacent transition section units so that the end faces of the stiffening plates on adjacent transition section units fit together.

[0009] On the other hand, the flange plate includes a first flange plate and a second flange plate, the first flange plate and the second flange plate are respectively located on adjacent transition section units, and the extension direction of the first flange plate and the second flange plate is parallel to the axial direction of the tower structure; the fastener is connected between the first flange plate and the second flange plate.

[0010] On the other hand, there are multiple stiffeners in a single reverse balance flange assembly, and each stiffener is arranged sequentially along the axial direction of the tower structure, and the stiffener is set perpendicular to the axial direction of the tower structure; the number of stiffeners on adjacent transition section units is equal and corresponds one-to-one.

[0011] On the other hand, the fastener is a bolt, which passes through the first flange plate and the second flange plate, and the fastener is detachably connected to the first flange plate and the second flange plate.

[0012] On the other hand, the number of fasteners is the same as the number of stiffeners, and the fasteners and stiffeners are staggered.

[0013] On the other hand, both the flange plate and the stiffening plate are welded and fixed to the transition section unit.

[0014] On the other hand, it also includes a gasket, which may be disposed between adjacent transition section units; and / or, it also includes a sealing filler that fills the outside of the seam between adjacent transition section units.

[0015] On the other hand, it also includes a flange fastening assembly. The top and bottom of the transition section unit are provided with an upper flange and a lower flange. The flange fastening assembly includes a pressure plate and a pressure plate fastener. The pressure plate spans across the upper or lower flange of the adjacent transition section unit. The pressure plate fastener is used to fix the pressure plate and the upper or lower flange of the two adjacent transition section units.

[0016] On the other hand, the bottom of the axial section of the unit is also provided with a lower flange; it also includes a waterproof cover, which is cylindrical and covers the top of the lower flange; and the top of the waterproof cover is provided with a first limiting step surface and a second limiting step surface, which are arranged sequentially, and the first limiting step is fitted and connected to the lower flange, and the second limiting step surface is fitted and connected to the top end face of the concrete section.

[0017] This utility model also provides a steel-concrete tower, including the tower transition section described in any one of the above.

[0018] The tower transition section provided by this utility model includes several transition section units and a reverse balancing flange assembly disposed on the transition section units. Each of the transition section units can sequentially surround to form a tower structure. The reverse balancing flange assembly is disposed on the side of the joint of the transition section unit, and the extension direction of the joint is parallel to the axial direction of the tower structure. The reverse balancing flange assembly includes a flange plate, stiffening plates, and fasteners. The flange plate and stiffening plates are provided on both the left and right sides of the joint. The stiffening plates are arranged along the axial direction of the transition section unit. The fasteners are used to tighten the flange plates on adjacent transition section units so that the end faces of the stiffening plates on adjacent transition section units fit together. The tower transition section provided by this utility model divides the tower transition section into several transition section units and assembles each transition section unit with the aid of the reverse balancing flange assembly. This not only facilitates the transportation of the transition section units and solves the problem of large-diameter tower transition sections not being able to be transported as a whole, but also tightens the flange plates on adjacent transition section units with the fasteners. While tightening the flange plates, the ribs on adjacent transition section units that are positioned opposite each other move closer together, allowing the end faces of the ribs on adjacent transition section units to fit together. This facilitates the restoration of the tower structure dimensions, ensuring that the dimensions of each transition section unit after splicing are basically consistent with the dimensions of the original tower, guaranteeing the performance and improving reliability.

[0019] In one embodiment, the bottom of the transition section unit is further provided with a lower flange; it also includes a waterproof cover, which is cylindrical and covers the top of the lower flange; the top of the waterproof cover is provided with a first limiting step surface and a second limiting step surface, which are arranged sequentially, with the first limiting step surface fitting snugly to the lower flange and the second limiting step surface fitting snugly to the top end face of the concrete section. With this configuration, the waterproof cover can be directly connected to the lower flange of the transition section unit via the first limiting step surface, and the second limiting step surface can cover the connection between the transition section unit and the concrete section, i.e., the waterproof cover can cover the gap between the tower transition section and the concrete section, preventing water leakage at the connection between the tower transition section and the concrete section.

[0020] The steel-concrete tower provided by this utility model is provided with the above-mentioned tower transition section. Since the tower transition section has the above-mentioned technical effects, the steel-concrete tower provided with the tower transition section should also have the corresponding technical effects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a specific embodiment of the tower transition section provided by this utility model;

[0023] Figure 2 for Figure 1 A partial structural schematic diagram of the tower transition section shown;

[0024] Figure 3 for Figure 1 The diagram shows the structural schematic of the stiffening plate in the tower transition section;

[0025] Figure 4 for Figure 1 The diagram shows the connection structure between the tower transition section and the concrete section.

[0026] Figure 5 for Figure 4 The diagram shows a partial sectional view of the tower transition section and the concrete section.

[0027] Figure label:

[0028] 100-Tower transition section; 200-Concrete section; 1-Transition section unit; 11-Upper flange; 12-Lower flange; A-Joint; B-End face; 2-Reverse balance flange assembly; 21-Flange plate; 211-First flange plate; 212-Second flange plate; 22-Stiffener plate; 23-Fastener; 3-Flange fastening assembly; 31-Pressure plate; 32-Pressure plate fastener; 4-Waterproof cover; 41-First limiting step surface; 42-Second limiting step surface. Detailed Implementation

[0029] The core of this utility model is to provide a tower transition section and a steel-concrete tower, which is easy to process, reduces water leakage problems, and provides a reliable connection between the concrete section and the steel section.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Please refer to Figures 1 to 5 , Figure 1 A schematic diagram of a specific embodiment of the tower transition section provided by this utility model; Figure 2 for Figure 1 A partial structural schematic diagram of the tower transition section shown; Figure 3 for Figure 1 The diagram shows the structural schematic of the stiffening plate in the tower transition section; Figure 4 for Figure 1 The diagram shows the connection structure between the tower transition section and the concrete section. Figure 5 for Figure 4 The diagram shows a partial sectional view of the tower transition section and the concrete section.

[0033] In this embodiment, the tower transition section 100 includes several transition section units 1 and a reverse balancing flange assembly 2 disposed on the transition section unit 1. Each transition section unit 1 can be sequentially arranged to form a tower structure. The reverse balancing flange assembly 2 is disposed beside the joint A of the transition section unit 1, and the extension direction of the joint A is parallel to the axial direction of the tower structure. Each tower transition section 100 can be divided into three transition section units 1. After the split design, the problem of the tower transition section 100 having an excessively large diameter and being unable to be transported can be solved.

[0034] The reverse balancing flange assembly 2 includes a flange plate 21, a stiffener plate 22, and a fastener 23. Flange plates 21 and stiffener plates 22 are provided on both the left and right sides of the joint A. The stiffener plates 22 are arranged along the axial direction of the transition section unit 1. The fasteners 23 are used to tighten the flange plates 21 on the adjacent transition section unit 1 so that the end faces B of the stiffener plates 22 on the adjacent transition section unit 1 fit together.

[0035] Specifically, fasteners 23 are used to fasten the flange plates 21 located on the left and right sides of the joint A. That is, after two adjacent transition section units 1 are arranged, the flange plates 21 and stiffening plates 22 on the two adjacent transition section units 1 are symmetrically arranged with respect to the joint A, such as... Figure 2 and Figure 3As shown. In the actual processing, two symmetrical flange plates 21 can be welded to the tower structure of the complete tower transition section 100 first. Then, multiple stiffening plates 22 are welded between the flange plates 21 in sequence. After welding, the periphery of the tower transition section 100 is cut in sequence, for example, into three transition section units 1. Each transition section unit 1 retains a flange plate 21 and several cut stiffening plates 22 on each side of its circumference. The extension direction of the joint A is parallel to the axial direction of the tower structure, so that the subsequent fasteners 23 can press the joint A against it during the tightening of the flange plates 21. The axial ends of the tower transition section 100 are respectively provided with upper flanges 11 and lower flanges 12. The cylinder of the tower transition section 100 and the upper flanges 11 and lower flanges 12 are prone to uneven cutting when cut along the joint A. During the tightening of the flange plates 21 by the fasteners 23, the end faces B of the stiffening plates 22 on the adjacent transition section units 1 are pressed together, which can better restore the cylinder size of the tower transition section 100.

[0036] The tower transition section 100 provided by this utility model divides the tower transition section 100 into several transition section units 1 and assembles each transition section unit 1 with the aid of the reverse balance flange assembly 2. This not only facilitates the transportation of the transition section units 1 and solves the problem that large-diameter tower transition sections 100 cannot be transported as a whole, but also tightens the flange plates 21 on adjacent transition section units 1 with fasteners 23. While tightening the flange plates 21, the rib plates 22 on adjacent transition section units 1 that are positioned opposite each other move closer to each other, so that the end faces B of the rib plates 22 on adjacent transition section units 1 can fit together. This facilitates the restoration of the tower structure dimensions, ensures that the dimensions of each transition section unit 1 after splicing are basically consistent with the dimensions of the original tower, ensures the performance and improves reliability.

[0037] In some embodiments, the flange plate 21 includes a first flange plate 211 and a second flange plate 212. The first flange plate 211 and the second flange plate 212 are respectively located on adjacent transition section units 1, and the extension directions of the first flange plate 211 and the second flange plate 212 are parallel to the axial direction of the tower structure. Fasteners 23 are connected between the first flange plate 211 and the second flange plate 212. Specifically, the first flange plate 211 and the second flange plate 212 refer to the flange plates 21 located on both sides of the joint A. By tightening the first flange plate 211 and the second flange plate 212 with fasteners 23, the two adjacent transition section units 1 and their stiffening plates 22 are pressed together, ensuring the connection reliability of the transition section units 1.

[0038] In some embodiments, a single reverse balance flange assembly 2 has multiple stiffeners 22, and each stiffener 22 is arranged sequentially along the axial direction of the tower structure, and the stiffeners 22 are set perpendicular to the axial direction of the tower structure, that is, the force on the stiffener 22 is perpendicular to the axial direction of the tower structure; the number of stiffeners 22 on adjacent transition section units 1 is equal and corresponds one to one, ensuring that each stiffener 22 has a corresponding stiffener 22 to connect with, thus ensuring stability.

[0039] In some embodiments, the fastener 23 is a bolt, the fastener 23 is installed by tensioning, the fastener 23 is disposed through the first flange plate 211 and the second flange plate 212, and the fastener 23 is detachably connected to the first flange plate 211 and the second flange plate 212; by tightening the first flange plate 211 and the second flange plate 212, the transition section unit 1, the stiffening plate 22, and the upper flange 11 and the lower flange 12 are pressed together.

[0040] In some embodiments, the number of fasteners 23 and stiffeners 22 is the same, and the fasteners 23 and stiffeners 22 are staggered to ensure that each stiffener 22 can be subjected to sufficient tension and improve stability.

[0041] In some embodiments, the flange plate 21 and the stiffening plate 22 are both welded and fixed to the transfer section unit 1. The welding method is simple to operate and can modify the existing tower transfer section 100.

[0042] In some embodiments, a gasket is also included, which may be disposed between adjacent transition section units 1. The gasket can fill the gap between adjacent transition section units 1 and can extend between two symmetrically arranged stiffeners 22.

[0043] In some embodiments, a sealing filler is also included, which fills the outside of the joint A of the adjacent transition segment 1; the sealing filler can be a sealant, and by applying the sealant to the outside of the joint A of the transition segment 1, a waterproof effect can be achieved.

[0044] In some embodiments, a flange fastening assembly 3 is also included. The top and bottom of the transition section unit 1 are provided with an upper flange 11 and a lower flange 12. The flange fastening assembly 3 includes a pressure plate 31 and a pressure plate fixing member 32. The pressure plate 31 spans across the upper flange 11 or lower flange 12 of the adjacent transition section unit 1. The pressure plate 31 fastener 23 is used to fix the pressure plate 31 and the upper flange 11 or lower flange 12 of the two adjacent transition section units 1. Specifically, the upper flange 11 or lower flange 12 is provided with an assembly hole. The pressure plate 31 covers at least one assembly hole of the adjacent transition section unit 1. The pressure plate fixing member 32 can be an anchor bolt. The pressure plate fixing member 32 passes through the pressure plate 31 and the upper flange 11 or lower flange 12 to achieve fixation and ensure the stability of the connection between the upper flange 11 or lower flange 12 of the adjacent transition section units 1.

[0045] In some embodiments, the bottom of the transition section unit 1 is also provided with a lower flange 12; it also includes a waterproof cover 4, which is cylindrical and covers the top of the lower flange 12; and the top of the waterproof cover 4 is provided with a first limiting step surface 41 and a second limiting step surface 42, which are arranged sequentially, and the first limiting step is fitted and connected to the lower flange 12, and the second limiting step surface 42 is fitted and connected to the top end face B of the concrete section 200. With the above configuration, the waterproof cover 4 can be directly connected to the lower flange 12 of the transition section unit 1 via the first limiting step surface 41. With the setting of the second limiting step surface 42, it can cover the connection between the transition section unit 1 and the concrete section 200. That is, the waterproof cover 4 can cover the gap between the tower transition section 100 and the concrete section 200, preventing water leakage at the connection between the tower transition section 100 and the concrete section 200. The waterproof cover 4 can be cylindrical and set around the tower transition section 100 and the concrete section 200 to improve the waterproof effect.

[0046] Specifically, in one embodiment, the transition section unit 1 can be three pieces, and each transition section unit 1 is vertically connected by a vertical reverse balance flange assembly 2. The reverse balance flange assembly 2 includes two symmetrically distributed parts, with the center of symmetry being the splice A of the tower structure. The reverse balance flange assembly 2 is welded to the tower structure, and the two symmetrical parts are fastened with bolts 23. After fastening, the end faces B of the stiffening plates 22 are fitted together. The longitudinal flange is a reverse balance flange structure. By simply increasing the size of the balance stiffening plates 22, the load-bearing capacity and fatigue resistance of the reverse balance flange assembly 2 can be increased, avoiding the cost increase caused by the thickening of traditional flanges. It is formed by welding, which is simpler to process than the traditional flange forging method. The fasteners 23 of the longitudinal reverse balance flange assembly 2 are installed by tensioning, which is more accurate than the traditional torque wrench installation, does not produce tensile and shear verification torque, and the bolts have a longer effective length than traditional flange bolts, resulting in less bolt preload loss after installation. The joint A of the lower flange 12 of the transition section unit 1 is connected by a pressure plate 31 and tightened with anchor cables; a waterproof cover 4 is added around the lower flange 12 of the tower structure to cover the joint A between the tower transition section 100 and the concrete section 200, preventing water leakage at the connection between the tower transition section 100 and the concrete section 200; a pad is added between the vertical spaces of adjacent transition section units 1, and after connection and compaction, the outside is filled with a sealing filler to prevent water leakage. The sealing filler can be weather-resistant sealant.

[0047] In addition to the tower transition section 100 mentioned above, this utility model also provides a steel-concrete tower including a steel section, a concrete section 200, and the aforementioned tower transition section 100 for connecting the steel section and the concrete section 200. For the structure of other parts of the steel-concrete tower, please refer to the relevant technology, which will not be described in detail here.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The tower transition section and reinforced concrete tower provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A tower transition section, characterized in that, It includes several transition section units (1) and a reverse balance flange assembly (2) disposed on the transition section units (1). Each of the transition section units (1) can be arranged in sequence to form a tower structure. The reverse balance flange assembly (2) is disposed on the side of the joint (A) of the transition section unit (1). The extension direction of the joint (A) is parallel to the axial direction of the tower structure. The reverse balance flange assembly (2) includes a flange plate (21), a stiffener plate (22), and a fastener (23). The flange plate (21) and the stiffener plate (22) are provided on both the left and right sides of the joint (A). The stiffener plate (22) is arranged along the axial direction of the transition section unit (1). The fastener (23) is used to tighten the flange plate (21) on the adjacent transition section unit (1) so that the end face (B) of the stiffener plate (22) on the adjacent transition section unit (1) fits together.

2. The tower transition section according to claim 1, characterized in that, The flange plate (21) includes a first flange plate (211) and a second flange plate (212). The first flange plate (211) and the second flange plate (212) are respectively located on adjacent transition section units (1), and the extension directions of the first flange plate (211) and the second flange plate (212) are parallel to the axial direction of the tower structure. The fastener (23) is connected between the first flange plate (211) and the second flange plate (212).

3. The tower transition section according to claim 2, characterized in that, The number of stiffeners (22) in a single reverse balance flange assembly (2) is multiple, and each stiffener (22) is arranged sequentially along the axial direction of the tower structure, and the stiffeners (22) are set perpendicular to the axial direction of the tower structure; the number of stiffeners (22) on adjacent transition section units (1) is equal and corresponds one to one.

4. The tower transition section according to claim 2, characterized in that, The fastener (23) is a bolt. The fastener (23) is installed through the first flange plate (211) and the second flange plate (212), and the fastener (23) is detachably connected to the first flange plate (211) and the second flange plate (212).

5. The tower transition section according to claim 4, characterized in that, The number of fasteners (23) is the same as the number of stiffeners (22), and the fasteners (23) and stiffeners (22) are staggered.

6. The tower transition section according to claim 1, characterized in that, Both the flange plate (21) and the stiffening plate (22) are welded and fixed to the transition section unit (1).

7. The tower transition section according to any one of claims 1 to 6, characterized in that, It also includes gaskets, which may be disposed between adjacent transition unit (1); and / or, it also includes sealing fillers that fill the outside of the seam (A) of adjacent transition unit (1).

8. The tower transition section according to any one of claims 1 to 6, characterized in that, It also includes a flange fastening assembly (3), and the top and bottom of the transition section unit (1) are provided with an upper flange (11) and a lower flange (12). The flange fastening assembly (3) includes a pressure plate (31) and a pressure plate fastener (32). The pressure plate (31) spans across the upper flange (11) or lower flange (12) of the adjacent transition section unit (1). The pressure plate (31) fastener (23) is used to fix the pressure plate (31) and the upper flange (11) or lower flange (12) of the two adjacent transition section units (1).

9. The tower transition section according to any one of claims 1 to 6, characterized in that, The axial bottom of the transition section unit (1) is also provided with a lower flange (12); it also includes a waterproof cover (4), which is cylindrical and covers the top of the lower flange (12); and the top of the waterproof cover (4) is provided with a first limiting step surface (41) and a second limiting step surface (42), the first limiting step surface (41) and the second limiting step surface (42) are arranged in sequence, and the first limiting step is fitted and connected to the lower flange (12), and the second limiting step surface (42) is fitted and connected to the top end face (B) of the concrete section (200).

10. A steel-concrete tower, comprising steel sections, concrete sections (200), and a tower transition section (100) for connecting the steel sections and the concrete sections (200), characterized in that, The tower transition section (100) is the tower transition section (100) as described in any one of claims 1 to 9.

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