Repairing and reinforcing device and repairing and reinforcing method for tower drum of wind generating set

Abstract

The invention relates to the technical field of wind power, in particular to a wind generating set tower drum repairing and reinforcing device and method. The stiffening beam is annular; the magnetic attraction assembly comprises mounting bases and magnetic attraction blocks, the mounting bases are arranged on the outer side of the reinforcing beam in a surrounding array mode, the magnetic attraction blocks are detachably connected with the mounting bases, and the magnetic attraction blocks are used for being attracted to the inner wall of the tower drum. The device has the advantages that the device is adsorbed on the inner wall of the topped round tower drum through the magnetic attraction blocks, then the magnetic attraction blocks are connected to the reinforcing beams through the mounting bases, the geometric defect positions of the tower drum are supported by the reinforcing beams through the magnetic attraction blocks, meanwhile, the reinforcing beams are fixed to the tower drum through the magnetic attraction blocks, the strength of the repaired geometric defect positions is enhanced, and the repairing quality of the tower drum is improved. And the tower drum is prevented from generating geometric defects again.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a device and method for repairing and reinforcing a tower of a wind turbine generator set. Background Art

[0002] In recent years, with the rapid development of the wind power industry, the industry has been reducing costs and increasing efficiency, and wind turbine safety issues have frequently occurred. The tower is an important component of the wind turbine. If the tower of an in-service wind turbine has geometric defects, the cost of replacing the tower is too high. Therefore, it is very necessary to propose a new technical solution for repairing the geometric defects of the tower of in-service wind turbines. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wind turbine tower repair and reinforcement device and a repair and reinforcement method.

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a wind turbine tower repair and reinforcement device in a first aspect, comprising:

[0005] A reinforcing beam, wherein the reinforcing beam is annular;

[0006] A magnetic attraction component, the magnetic attraction component includes a mounting seat and a magnetic attraction block, a plurality of the mounting seats are arranged in an array on the outside of the reinforcing beam, the magnetic attraction block is detachably connected to the mounting seat, and the magnetic attraction block is used to be adsorbed onto the inner wall of the tower.

[0007] The present invention quickly establishes a connection between the reinforcing beam and the tower by arranging a magnetic attraction component, so that the repaired geometric defect position on the tower is supported by the reinforcing beam, thereby avoiding a reduction in the strength of the repaired geometric defect position on the tower, and further avoiding the occurrence of geometric defects again.

[0008] In some embodiments, the reinforcement beam includes a plurality of segmented beams, and the plurality of segmented beams are connected end to end to form a ring. By arranging the reinforcement beam segmented into a plurality of segmented beams, the volume of the repair and reinforcement device before installation is reduced, making the entire repair and reinforcement device easy to transport and install.

[0009] In some embodiments, the ends of the segmented beams are provided with connecting plates, and several segmented beams are connected by bolts of the connecting plates at the ends. The connecting plates on different segmented beams are connected by bolts, which facilitates the disassembly and assembly of the reinforced beams.

[0010] In some embodiments, the segmented beam includes an upper reinforcing beam plate and a lower reinforcing beam plate, and the upper and lower ends of the mounting seat are respectively connected to the upper reinforcing beam plate and the lower reinforcing beam plate. By providing the upper reinforcing beam plate and the lower reinforcing beam plate, the reinforcing beam maintains sufficient strength while reducing the weight of the device.

[0011] In some embodiments, a rib plate is provided between the upper reinforcing beam plate and the lower reinforcing beam plate, so as to further improve the strength of the reinforcing beam.

[0012] In some embodiments, the rib plate is respectively connected to the upper reinforcing beam and the lower reinforcing beam plate by welding. The rib plate is connected to the upper reinforcing beam plate and the lower reinforcing beam plate by welding to further improve the strength of the reinforcing beam.

[0013] In some embodiments, the magnetic block is detachably connected to the mounting seat by bolts. The magnetic block and the mounting seat are connected by bolts, which is convenient for installation.

[0014] In some embodiments, the adsorption surface of the magnetic block is arc-shaped. Since the inner wall surface of the tower is arc-shaped, by setting the magnetic surface of the magnetic block to an arc shape, the magnetic block and the inner wall of the tower are more closely fitted, thereby making the supporting force on the tower more uniform.

[0015] A second aspect of the present invention provides a method for repairing and reinforcing a tower of a wind turbine generator set, characterized in that it comprises the following steps:

[0016] Use hydraulic jack to round off the geometric defects on the tower;

[0017] A plurality of magnetic blocks are arranged in a circular array on the inner wall of the tower, and at least one of the magnetic blocks is located at a geometric defect of the top circle;

[0018] The mounting seat on the reinforcing beam is connected to the magnetic block adsorbed on the inner wall of the tower.

[0019] The present invention has the following advantages:

[0020] The present invention combines a magnetic suction component with a reinforcement beam, so that the repair and reinforcement device is easy to install and provides sufficient strength support for the tower, so that the repaired geometric defects of the tower are reinforced, and the geometric defects are avoided from reappearing when the tower is subjected to long-term stress. The present invention first repairs the top circle of the geometric defects of the tower through a hydraulic top circle device, and then adsorbs a plurality of magnetic suction blocks in an annular array to the inner wall of the tower as the connection point between the reinforcement beam and the tower, and then connects the reinforcement beam to the magnetic suction block through a mounting seat to realize the repair and reinforcement of the tower. This repair and reinforcement method is simple, convenient and easy to construct. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a wind turbine tower repair and reinforcement device of the present invention;

[0022] Figure 2 It is a front view of the wind turbine tower repair and reinforcement device of the present invention in the working state inside the tower;

[0023] Figure 3A top view of the wind turbine tower repair and reinforcement device of the present invention in the working state inside the tower;

[0024] In the figure: 1. reinforcing beam; 11. upper reinforcing beam plate; 12. lower reinforcing beam plate; 2. magnetic suction assembly; 21. mounting seat; 22. magnetic suction block; 3. rib plate; 4. connecting plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0027] like Figure 1-Figure 3 As shown, a wind turbine tower repair and reinforcement device comprises:

[0028] A reinforcing beam 1, wherein the reinforcing beam 1 is annular;

[0029] The magnetic attraction component 2 includes a mounting seat 21 and a magnetic attraction block 22. A plurality of the mounting seats 21 are arranged in an array on the outside of the reinforcing beam 1. The magnetic attraction block 22 is detachably connected to the mounting seat 21. The magnetic attraction block 22 is used to be adsorbed onto the inner wall of the tower.

[0030] In this embodiment, specifically, the reinforcing beam 1 is annular in structure as a whole, and a plurality of mounting seats 21 are evenly arranged in a circular array on the outer side of the annular reinforcing beam 1 .

[0031] Preferably, the reinforcing beam 1 comprises a plurality of segmented beams, and the plurality of segmented beams are connected end to end to form a ring.

[0032] In this embodiment, the reinforcement beam 1 is configured as a plurality of segmented beams, so that the volume of the reinforcement beam 1 can be reduced during transportation, thereby facilitating transportation.

[0033] Preferably, connecting plates 4 are provided at the ends of the segmented beams, and the connecting plates 4 between the segmented beams are connected by bolts.

[0034] Specifically, in this embodiment, connecting holes are provided on the connecting plate 4. When the segmented reinforcing beams 1 are connected, the connecting plates 4 at the ends of the two segmented beams are first fitted together to align the connecting holes on the connecting plates 4. The connecting holes are then connected by bolts to connect the segmented beams. Several segmented beams are connected end to end in the above manner to form an overall annular reinforcing beam 1.

[0035] Usually, the diameter of the tower is relatively large. If the reinforcing beam 1 is set as an integral structure, the overall structure of the device will be relatively large. By setting the reinforcing beam 1 as a segmented structure, the volume of the reinforcing beam 1 can be reduced during transportation, which is convenient for transportation.

[0036] Preferably, the segmented beam comprises an upper reinforcing beam plate 11 and a lower reinforcing beam plate 12 , and the upper and lower ends of the mounting seat 21 are respectively connected to the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12 .

[0037] In this embodiment, specifically, the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12 are both arc-shaped on the horizontal plane, and there is a gap between the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12. By setting the segmented beam as the structure of the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12, the reinforcing beam 1 can maintain sufficient strength while reducing the weight of the device, so that the reinforcing beam 1 is not easily deformed in the horizontal direction, and provides stable support for the geometric defects of the tower being repaired. The upper end of the mounting seat 21 is connected to the upper reinforcing beam plate 11, and the lower end of the mounting seat 21 is connected to the lower reinforcing beam plate 12. The mounting seat 21 is used to install the magnetic suction block 22 and is also used to connect the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12 to strengthen the structural strength.

[0038] Preferably, a rib plate 3 is provided between the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12 .

[0039] Specifically, in this embodiment, a plurality of rib plates 3 are evenly spaced between the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12, the rib plates 3 are vertically arranged, and the central axis of the reinforcing beam 1 is located on the plane where the rib plates 3 are located, and the vertical rib plates 3 further improve the stability of the connection between the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12, providing more stable support for the geometric defects being repaired on the tower.

[0040] Preferably, the rib plate 3 is respectively welded to the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12. By welding the rib plate 3 to the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12, the connection between the rib plate 3 and the upper reinforcing beam plate 11 and the lower reinforcing beam plate 12 is made more stable.

[0041] Preferably, the magnetic block 22 is detachably connected to the mounting seat 21 by bolts. The magnetic block 22 is detachably connected to the mounting seat 21 by bolts, which is convenient for quick installation.

[0042] Preferably, the adsorption surface of the magnetic block 22 is arc-shaped.

[0043] Specifically, in this embodiment, the adsorption surface of the magnetic block 22 is arc-shaped, and the radius of the arc is consistent with the radius of the inner wall of the tower. By setting the adsorption surface of the magnetic block 22 to an arc shape, when the magnetic block 22 contacts the repaired geometric defect of the tower, the contact surface between the magnetic block 22 and the inner wall of the tower is increased, providing a more uniform supporting force for the tower and avoiding secondary geometric defects caused by stress concentration.

[0044] The repair and reinforcement method of the wind turbine tower repair and reinforcement device according to the present invention comprises the following steps:

[0045] Use hydraulic jack to round off the geometric defects on the tower;

[0046] Specifically, in this embodiment, the hydraulic jack is a commonly used device for those skilled in the art, and its specific structure is not described here. In the process of using the hydraulic jack, the hydraulic jack is first placed horizontally, and the telescopic length of the hydraulic jack is adjusted so that both ends of the hydraulic jack contact the inner wall of the tower, and one end of the hydraulic jack is abutted against the position where the geometric defect of the tower occurs, and then the pneumatic hydraulic jack is used to make the hydraulic jack top round the geometric defect of the inner wall of the tower. The preliminary repair of the geometric defect of the tower is completed.

[0047] A plurality of magnetic blocks 22 are disposed in a circular array on the inner wall of the tower, and at least one magnetic block 22 is located at a geometric defect position of the top circle;

[0048] Specifically, in this embodiment, after the geometric defect of the tower is rounded by a hydraulic jack, several magnetic blocks 22 are adsorbed onto the inner wall of the tower so that the several magnetic blocks 22 are all located at the same water level. Since the strength of the repaired geometric defect of the tower does not reach the strength of the initial state, in order to prevent the repaired geometric defect of the tower from secondary deformation, at least one magnetic block 22 is adsorbed onto the repaired geometric defect, and the magnetic block 22 directly provides support for the repaired geometric defect to prevent the tower from deforming again during subsequent use.

[0049] The mounting seat 21 on the reinforcing beam 1 is connected to the magnetic block 22 adsorbed on the inner wall of the tower.

[0050] Specifically, in this embodiment, after the magnetic block 22 is adsorbed to the inner wall of the tower, the mounting base 21 on the reinforcing beam 1 is connected to the magnetic block 22 by bolts. The bolts are used to stably connect the magnetic block 22 to the reinforcing beam 1 to prevent the magnetic block 22 from shifting.

[0051] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above-mentioned technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. A wind turbine tower repair and reinforcement device, characterized in that: include: A reinforcing beam (1), wherein the reinforcing beam (1) is ring-shaped; A magnetic attraction component (2), the magnetic attraction component (2) comprising a mounting seat (21) and a magnetic attraction block (22), a plurality of the mounting seats (21) being arranged in a surrounding array on the outside of the reinforcing beam (1), the magnetic attraction block (22) being detachably connected to the mounting seat (21), and the magnetic attraction block (22) being used to be adsorbed onto the inner wall of the tower.

2. A wind turbine tower repair and reinforcement device according to claim 1, characterized in that: The reinforcing beam (1) comprises a plurality of segmented beams, and the plurality of segmented beams are connected end to end to form a ring.

3. A wind turbine tower repair and reinforcement device according to claim 2, characterized in that: A connecting plate (4) is provided at the end of the segmented beam, and a plurality of the segmented beams are connected by bolts through the connecting plate (4) at the end.

4. A wind turbine tower repair and reinforcement device according to claim 3, characterized in that: The segmented beam comprises an upper reinforcing beam plate (11) and a lower reinforcing beam plate (12), and the upper and lower ends of the mounting seat (21) are respectively connected to the upper reinforcing beam plate (11) and the lower reinforcing beam plate (12).

5. A wind turbine tower repair and reinforcement device according to claim 4, characterized in that: A rib plate (3) is provided between the upper reinforcing beam plate (11) and the lower reinforcing beam plate (12).

6. A wind turbine tower repair and reinforcement device according to claim 5, characterized in that: The rib plate (3) is respectively connected to the upper reinforcing beam plate (11) and the lower reinforcing beam plate (12) by welding.

7. A wind turbine tower repair and reinforcement device according to claim 1, characterized in that: The magnetic attraction block (22) and the mounting seat (21) are detachably connected via bolts.

8. A wind turbine tower repair and reinforcement device according to claim 1, characterized in that: The adsorption surface of the magnetic adsorption block (22) is arc-shaped.

9. A repair and reinforcement method for a wind turbine tower based on the wind turbine tower repair and reinforcement device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Use hydraulic jack to round off the geometric defects on the tower; A plurality of magnetic blocks (22) are arranged in a circular array on the inner wall of the tower tube by absorption, and at least one of the magnetic blocks (22) is located at a geometric defect position of the top circle; The mounting seat (21) on the reinforcing beam (1) is connected to a magnetic attraction block (22) adsorbed on the inner wall of the tower.

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