Concrete tower section, tower and wind turbine

Abstract

The application relates to the technical field of wind turbine generators and particularly discloses a concrete tower reinforcing assembly, a tower and a wind turbine generator. The concrete tower reinforcing assembly comprises splicing plates, prestressed members and a hoop ring. The splicing plates are connected at the heads and tails to form a reinforcing ring and are sleeved on the outer wall of a concrete tower; the prestressed members are arranged in the circumferential direction outside the reinforcing ring and have circumferential prestress on the reinforcing ring; and the hoop ring is sleeved on the outer wall of the concrete tower and is located at the bottom of the reinforcing ring and supports the reinforcing ring. In the application, the splicing plates form the reinforcing ring which is sleeved on the outer wall of the cracked part of the concrete tower, and the prestressed members provide inward tension, so that the defective part of the concrete tower is repaired, the operation is convenient, the overall strength is high, and the tower is not secondarily damaged. In addition, the hoop ring can be arranged below the cracked part and used for supporting the bottom of the reinforcing ring and pre-positioning the reinforcing ring during construction.

Description

Technical Field

[0001] This application relates to the technical field of wind turbine generators, and specifically proposes a concrete tower reinforcement component, a tower, and a wind turbine generator. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. It mainly consists of components such as a wind turbine, a generator, and a tower. The tower is a supporting structure, primarily used to elevate the wind turbine to higher altitudes to capture more stable and faster wind energy resources.

[0003] Specifically, some towers are made of concrete. When wind turbines operate in harsh environments such as high temperatures and strong winds for extended periods, defects such as cracks may develop in the walls of the concrete towers. Utility Model Content

[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions: In a first aspect, this application proposes a concrete tower reinforcement assembly, comprising splicing plates, prestressed members, and hoop rings. The splicing plates are multiple pieces, connected end-to-end in sequence to form a reinforcement ring, which is fitted onto the outer wall of the concrete tower. The prestressed members are disposed circumferentially outside the reinforcement ring and exert circumferential prestress on the reinforcement ring. The hoop rings are fitted onto the outer wall of the concrete tower and located at the bottom of the reinforcement ring, supporting the reinforcement ring.

[0005] In some embodiments, the splicing plates are provided with toothed structures at both ends, the toothed structures including protrusions and notches; the protrusions and notches on adjacent splicing plates engage with each other.

[0006] In some embodiments, the outer wall of the splicing plate is provided with a groove, the grooves on two adjacent splicing plates are aligned, and an annular groove is formed on the reinforcing ring, with the prestressed members distributed along the annular groove.

[0007] In some embodiments, the splicing plate includes a first splicing plate, the first end of which is provided with an anchoring part, and the two ends of the anchoring part along the height direction are provided with a fixed point and a tensioning point, and the two ends of the prestressed member are respectively connected to the fixed point and the tensioning point.

[0008] In some embodiments, the groove is inclined and the annular groove has a head end and a tail end, which are spaced apart along the height direction.

[0009] In some embodiments, a stiffening rib is provided between the anchoring portion and the protrusion.

[0010] In some embodiments, there are multiple reinforcing rings arranged along the height direction.

[0011] In some embodiments, the hoop includes a first half-ring and a second half-ring, which are connected by a flange. The top of the first half-ring and the second half-ring are provided with wing plates, which support the reinforcing ring.

[0012] Secondly, this application proposes a tower that includes the concrete tower reinforcement component of the first aspect.

[0013] Thirdly, this application proposes a wind turbine unit that includes the tower of the second aspect.

[0014] The technical solution proposed in this application has at least the following technical effects: In this application, a spliced ​​plate forms a reinforcing ring that is fitted onto the outer wall of the cracked section of the concrete tower. Prestressed members provide inward tension, thereby repairing the defect in the concrete tower. This method is convenient, provides high overall strength, and avoids secondary damage to the tower. Furthermore, a hoop can be positioned below the cracked section to support the bottom of the reinforcing ring during construction, pre-positioning the ring and ensuring it does not shift under gravity. Attached Figure Description

[0015] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.

[0016] Specifically, the annotations for the accompanying drawings are as follows: Figure 1 This is a structural schematic diagram of the concrete tower reinforcement assembly described in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the splicing panel described in some embodiments of this application.

[0017] Specifically, the annotations for the figure marks in the instruction manual are as follows: 10. Splicing plate; 101. Reinforcing ring; 102. Protrusion; 103. Notch; 104. Cable trough; 105. Anchoring part; 106. Stiffening rib; 20. Prestressed component; 30. Hoop ring; 301. Flange; 302. Wing plate. Detailed Implementation

[0018] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It should be understood that the content mentioned below represents only some embodiments of this application, and not all embodiments are listed exhaustively. Therefore, other embodiments that can be obtained based on the following embodiments without any inventive effort fall within the protection scope of this application.

[0019] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.

[0020] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.

[0021] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0022] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.

[0023] The embodiments of this application are described below with reference to the accompanying drawings. It can be understood that the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.

[0024] Firstly, referring to Figure 1 and Figure 2This application proposes a concrete tower reinforcement assembly, which includes splicing plates 10, prestressed members 20, and hoop rings 30. Multiple splicing plates 10 are connected end-to-end to form a reinforcement ring 101, which is fitted onto the outer wall of the concrete tower. The prestressed members 20 are arranged circumferentially outside the reinforcement ring 101 and exert circumferential prestress on the reinforcement ring 101. The hoop rings 30 are fitted onto the outer wall of the concrete tower and located at the bottom of the reinforcement ring 101, supporting the reinforcement ring 101.

[0025] In this embodiment, the splicing plate 10 forms a reinforcing ring 101, which is fitted onto the outer wall of the cracked portion of the concrete tower. The prestressed member 20 provides inward tension, thereby repairing the defect in the concrete tower. This method is convenient to operate, has high overall strength, and does not cause secondary damage to the tower. Furthermore, a hoop 30 can be positioned below the cracked portion to support the bottom of the reinforcing ring 101 during construction, pre-positioning the reinforcing ring 101 and ensuring that it does not shift under gravity. It should be noted that the hoop 30 can be removed after construction is completed.

[0026] Specifically, in this embodiment, the tension of the prestressed member 20 applies radial pressure to the reinforcing ring 101 on the tower, offsetting the tensile stress caused by external loads (such as wind loads and earthquakes) and reducing tower deformation. Furthermore, the reinforcing ring 101 and the tower form a combined structure, sharing the shear force at the crack and preventing crack propagation. In addition, the bottom support of the hoop 30 prevents the reinforcing ring 101 from sagging due to its own weight, ensuring uniform distribution of tension force, making it suitable for towers of different heights.

[0027] Furthermore, firstly, this embodiment applies prestress to the outside of the splicing plate 10 using the prestressed member 20 to form an active reinforcement method, that is, pre-applying pressure to the tower so that it establishes a favorable stress state before bearing external loads, fundamentally improving the stress conditions and greatly enhancing the deformation resistance and overall stability.

[0028] Secondly, this embodiment does not cause secondary damage to the original tower, that is, there is no need to perform destructive operations such as through bolts or rebar installation on the tower. While strengthening the structural performance, it preserves the integrity of the original concrete tower to the maximum extent, avoids secondary damage to the original structure due to construction, and reduces subsequent maintenance risks and costs.

[0029] Furthermore, in this embodiment, the angle of the prestressed member can be flexibly adjusted according to the actual stress distribution direction or crack extension trajectory of the concrete tower, so that the direction of prestressing is precisely matched with the weak points of the structure and the path of defect development, thereby achieving "targeted" reinforcement.

[0030] In addition, this embodiment adopts a segmented splicing panel 10 design, which greatly reduces the volume and weight of a single panel, making it more suitable for high-altitude operation scenarios, reducing installation difficulty, and using hoop rings 30 to locate defect positions, thereby improving the safety and convenience of the installation process.

[0031] In addition, this embodiment adopts the "ring-by-ring construction and immediate tensioning" mode. After the splicing of each ring splicing plate 10 is completed, there is no need to wait for other processes or materials to cure. The prestressed component 20 can be tensioned immediately, achieving seamless connection of processes and significantly reducing the overall construction cycle.

[0032] Optionally, the splicing plate 10 is a steel plate, and the prestressed member 20 is a prestressed steel strand.

[0033] In some embodiments, refer to Figure 1 and Figure 2 The splicing plate 10 has a toothed structure at both ends, which includes a protrusion 102 and a notch 103; the protrusion 102 and the notch 103 on two adjacent splicing plates 10 engage with each other.

[0034] In this embodiment, adjacent splicing plates 10 are precisely and quickly spliced ​​using the interlocking structure of the protrusion 102 and the notch 103, without the need for additional welding or bolts, thus simplifying construction.

[0035] In some embodiments, refer to Figure 1 and Figure 2 The outer wall of the splicing plate 10 is provided with a wire groove 104. The wire grooves 104 on two adjacent splicing plates 10 are aligned and form an annular groove on the reinforcing ring 101. The prestressed member 20 is distributed along the annular groove.

[0036] In this embodiment, the grooves 104 on the multiple splicing plates 10 form an annular groove, and the prestressed members 20 are distributed along the annular groove, thereby constraining the position of the prestressed members 20, preventing slippage, and ensuring that the tension force is uniformly transmitted circumferentially. In addition, the annular groove can cover the prestressed members 20, reducing the erosion of the prestressed members 20 by environmental corrosion (such as rainwater and salt spray) and extending their service life.

[0037] In some embodiments, refer to Figure 1 The splicing plate 10 includes a first splicing plate 10, the first end of which is provided with an anchoring part 105. The anchoring part 105 is provided with a fixed point and a tensioning point at both ends along the height direction. The two ends of the prestressed member 20 are respectively connected to the fixed point and the tensioning point.

[0038] In this embodiment, both ends of the prestressed member 20 are fixed to the anchoring portion 105 of the first splicing plate 10. Specifically, the anchoring portion 105 is arranged perpendicular to the splicing plate 10 and provides connection points for the prestressed member 20 to prevent the tension on the prestressed member 20 from loosening. In addition, the anchoring portion 105 is integrated into the splicing plate 10, reducing additional fixing structures and lowering installation complexity.

[0039] In some embodiments, refer to Figure 1 and Figure 2 The trough 104 is inclined, and the annular trough has a head end and a tail end, which are spaced apart along the height direction.

[0040] In this embodiment, the groove 104 is inclined and the ends of the annular groove are misaligned along the height, which makes it convenient to flexibly adjust the angle of the prestressed member 20 according to the crack extension trajectory, so that the direction of prestressing is precisely matched with the weak point of the structure and the path of defect development, thereby achieving "targeted" reinforcement.

[0041] In some embodiments, refer to Figure 1 and Figure 2 A stiffening rib 106 is provided between the anchoring part 105 and the protrusion 102.

[0042] In this embodiment, a stiffening rib 106 is provided between the anchoring part 105 and the protrusion 102 to prevent the anchoring part 105 from deforming due to the tension of the prestressed member 20 and to improve the local bearing capacity.

[0043] In some embodiments, refer to Figure 1 There are multiple reinforcing rings 101, and the multiple reinforcing rings 101 are arranged along the height direction.

[0044] In this embodiment, multiple reinforcing rings 101 are arranged along the height, covering a larger area. The number of reinforcing rings 101 can be adjusted according to the extent of defects such as cracks. In addition, reinforcing rings 101 at different heights share the load, avoiding stress concentration on a single ring, improving the overall bending resistance, and facilitating local replacement or reinforcement, adapting to the needs of segmented prefabrication and on-site assembly of the tower.

[0045] In some embodiments, refer to Figure 1 The hoop 30 includes a first half ring and a second half ring, which are connected by a flange 301. The top of the first half ring and the second half ring are provided with a wing plate 302, which supports the reinforcing ring 101.

[0046] In this embodiment, the hoop 30 is connected to the semi-circular flange 301, which facilitates hoisting and disassembly. The top of the hoop 30 is provided with a wing plate 302 to support the reinforcing ring 101, which provides good support.

[0047] Secondly, this application proposes a tower that includes the concrete tower reinforcement component of the first aspect.

[0048] Thirdly, this application proposes a wind turbine unit that includes the tower of the second aspect.

[0049] In the above embodiments, both the tower of the second aspect and the wind turbine of the third aspect include the concrete tower reinforcement component of the first aspect. Therefore, the tower of the second aspect and the wind turbine of the third aspect have all the technical effects of the concrete tower reinforcement component of the first aspect.

[0050] In addition, the second aspect of the tower also includes a concrete tower structure, and the third aspect of the wind turbine also includes a wind rotor, etc. Other structures will not be described in detail here.

[0051] In particular, the term "and / or" in this application should be understood as follows: In the first case, the term “and / or” between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.

[0052] In the second case, the term "and / or" between the last two of three or more subjects means including at least one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) first subject and second subject and no third subject; (5) first subject and third subject and no second subject; (6) second subject and third subject and no first subject; and (7) first subject, second subject and third subject; Furthermore, the character " / " in this application indicates that the objects before and after it are in an "or" relationship.

[0053] Finally, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.

Claims

1. A concrete tower reinforcement component, characterized in that, include: The splicing plate (10) has multiple pieces, and the multiple splicing plates (10) are connected end to end in sequence to form a reinforcing ring (101), which is sleeved on the outer wall of the concrete tower. A prestressed member (20) is disposed on the outside of the reinforcing ring (101) along the circumference of the reinforcing ring (101) and has circumferential prestress on the reinforcing ring (101); A hoop (30) is fitted onto the outer wall of the concrete tower and located at the bottom of the reinforcing ring (101), and the hoop (30) supports the reinforcing ring (101).

2. The concrete tower reinforcement component according to claim 1, characterized in that, The splicing plate (10) has toothed structures at both ends, the toothed structures including protrusions (102) and notches (103); the protrusions (102) on two adjacent splicing plates (10) engage with the notches (103).

3. The concrete tower reinforcement component according to claim 2, characterized in that, The outer wall of the splicing plate (10) is provided with a groove (104). The grooves (104) on two adjacent splicing plates (10) are aligned and form an annular groove on the reinforcing ring (101). The prestressed member (20) is distributed along the annular groove.

4. The concrete tower reinforcement component according to claim 3, characterized in that, The splicing plate (10) includes a first splicing plate (10), the first end of the first splicing plate (10) is provided with an anchoring part (105), the anchoring part (105) is provided with a fixed point and a tensioning point at both ends along the height direction, and the two ends of the prestressed member (20) are respectively connected to the fixed point and the tensioning point.

5. The concrete tower reinforcement component according to claim 4, characterized in that, The groove (104) is inclined, and the annular groove has a head end and a tail end, which are spaced apart along the height direction.

6. The concrete tower reinforcement component according to claim 4, characterized in that, A stiffening rib (106) is provided between the anchoring part (105) and the protrusion (102).

7. The concrete tower reinforcement component according to claim 1, characterized in that, The reinforcing ring (101) is multiple, and the multiple reinforcing rings (101) are arranged along the height direction.

8. The concrete tower reinforcement assembly according to any one of claims 1 to 7, characterized in that, The hoop (30) includes a first half ring and a second half ring, which are connected by a flange (301). The top of the first half ring and the second half ring are provided with a wing plate (302), which supports the reinforcing ring (101).

9. A tower, characterized in that, Includes the concrete tower reinforcement assembly as described in any one of claims 1 to 8.

10. A wind turbine generator set, characterized in that, Includes the tower as described in claim 9.

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