Anti-deformation device for tower drum flange of large megawatt wind turbine generator

Abstract

The utility model discloses a large megawatt wind turbine generator tower drum flange anti-deformation device, and relates to the technical field of wind turbine generator tower drum fixing, in particular to a large megawatt wind turbine generator tower drum flange anti-deformation device which comprises a tower drum flange, a pull rod and a pin bolt. The connecting piece is fixed on a tower drum flange through a pin bolt; the middle of the pull rod is provided with a positive-negative spiral sleeve for adjusting the length of the pull rod. The device has the advantages that through reasonable structural design and an accurate adjusting mechanism, the device can effectively resist the effect of an external load on a tower drum flange, prevent the flange from deforming in the storage, transportation and installation processes, ensure accurate butt joint of flange screw holes and improve the installation quality and the operation stability of a wind turbine generator.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine tower fixing, in particular to a large-megawatt wind turbine tower flange anti-deformation device. Background Art

[0002] As a clean, renewable energy source, wind power plays an increasingly important role in the global energy transition. With the continuous advancement of wind turbine technology, large-megawatt wind turbines have gradually become the mainstream of the market, and their tower heights and diameters have also increased accordingly. As the main supporting structure of a wind turbine, the stability and safety of the tower directly affect the performance and lifespan of the entire wind turbine. The tower flange is a key component connecting tower sections. Due to the large diameter of the tower flange of large-megawatt wind turbines (up to 10 meters or more), it is easily deformed by various external forces during manufacturing, storage, transportation, and installation, resulting in misalignment of the screw holes on the flange, which greatly complicates installation and increases construction time and costs.

[0003] Currently, the wind power industry mainly uses "M"-shaped supports or "I"-shaped crossbeams to prevent tower flange deformation. Although these traditional methods can prevent deformation to a certain extent, they have the following problems:

[0004] 1. The anti-deformation effect is not ideal: The traditional support method has limited anti-deformation effect on large-diameter tower flanges and cannot completely avoid the occurrence of screw hole misalignment.

[0005] 2. Difficulty in dismantling: After the installation of traditional support structures, the dismantling process is relatively complicated, requiring a lot of time and manpower, which increases construction costs.

[0006] 3. High operation intensity and low efficiency: The installation and disassembly of traditional support structures require high operation intensity and low efficiency, which affects the construction progress.

[0007] 4. Poor versatility: Traditional support structures often need to be customized according to tower flanges of different diameters, which lacks versatility and increases inventory and management costs.

[0008] Therefore, a new, efficient, and versatile anti-deformation device for large-megawatt wind turbine tower flanges is urgently needed to address the above-mentioned issues. This device is designed with this in mind, aiming to provide a solution with excellent anti-deformation effect, easy installation and disassembly, low operational intensity, and high construction efficiency, thus meeting the actual needs of large-megawatt wind turbine tower flange anti-deformation. Utility Model Content

[0009] The utility model aims to overcome the shortcomings of the prior art and provide a large-megawatt wind turbine tower flange anti-deformation device.

[0010] The technical solutions of the utility model are as follows:

[0011] A large megawatt wind turbine tower flange anti-deformation device, including tower flange, pull rod and pin bolt, the tower flange is provided with bolt hole, the pull rod both ends are provided with connecting piece, the connecting piece is fixed to the tower flange through pin bolt;

[0012] The middle part of the pull rod is provided with a positive and negative screw sleeve for adjusting the length of the pull rod.

[0013] Further, at least one connecting piece is provided with a jacking bolt along the axis of the pull rod, and the jacking bolt can be tightened or loosened along the axis of the pull rod by rotating.

[0014] Further, the pin bolt and the jacking bolt are provided with a groove matching the end of the jacking bolt at the interface.

[0015] Further, the jacking bolt is provided with external threads, and the connecting piece is provided with bolt holes corresponding to the internal threads.

[0016] Further, a flexible buffer pad is arranged in the groove.

[0017] Further, the bottom of the pin bolt is provided with external threads, and is fixed to the bolt hole of the tower flange by a matching nut.

[0018] Further, a gasket is arranged between the nut and the pin bolt.

[0019] Further, the middle part of the pull rod is disconnected and provided with external threads, and the inside of the positive and negative screw sleeve is provided with opposite internal threads at both ends, and the middle part of the pull rod is arranged at both ends of the positive and negative screw sleeve with an adjustment gap.

[0020] Further, the middle part of the positive and negative screw sleeve is provided with an observation window.

[0021] Further, the cross section of the positive and negative screw sleeve is polygonal to facilitate clamping and adjusting.

[0022] In summary, due to the adoption of the above technical solutions, the utility model has the following advantages:

[0023] 1. Significantly improve the anti-deformation effect: through reasonable structure design and accurate adjustment mechanism, the device can effectively resist the effect of external load on the tower flange, prevent deformation of the flange during storage, transportation and installation, ensure accurate butt joint of the flange bolt hole, and improve the installation quality and operation stability of the wind turbine.

[0024] 2. Improve installation efficiency and reduce labor intensity: the installation steps of the device are simple and easy to operate, without special tools or professional skills, ordinary workers can complete the installation and disassembly. Compared with traditional anti-deformation measures, the installation and disassembly time of the device is greatly shortened, the labor intensity is significantly reduced, and the construction efficiency is improved.

[0025] 3. High adaptability: the device design is flexible, which can adapt to different diameter sizes of tower flanges, has high universality and practicality, and reduces the inventory and management cost.

[0026] 4. Good safety: through the design of jacking bolts and flexible buffer pads, the safety and stability of the device are enhanced, accidental loosening or damage is prevented, and the safety during construction is improved.

[0027] 5. Reduce maintenance cost: the device has simple structure, convenient maintenance, and key components are easy to replace, which reduces the maintenance cost.

[0028] 6. Improve economic benefits: the use of the device significantly improves the installation efficiency and quality of the wind turbine generator, shortens the project period, reduces the construction cost, and improves the overall economic benefits of the project. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the front view structure schematic diagram of the utility model;

[0030] Figure 2 is the section view of the utility model;

[0031] Figure 3 is the use state structure schematic diagram of the utility model;

[0032] Figure 4 is the combined use structure schematic diagram of the utility model.

[0033] Markings in the figure:

[0034] 1-tower flange, 2-pull rod, 3-pin bolt, 4-connector, 5-regular and reverse spiral sleeve, 6-jacking bolt, 7-groove, 8-nut, 9-gasket, 10-observation window.

[0035] Specific examples

[0036] The utility model will be described in detail below in combination with the drawings.

[0037] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0038] Example one

[0039] In the embodiment, as shown in Figure 1 , 2 A large megawatt wind turbine tower flange deformation prevention device includes a tower flange 1, a pull rod 2, and a pin bolt 3. The tower flange 1 is provided with a bolt hole. The pull rod 2 is provided with a connecting piece 4 at both ends. The connecting piece 4 is fixed to the tower flange 1 by the pin bolt 3.

[0040] The middle part of the pull rod 2 is provided with a right and left screw sleeve 5 for adjusting the length of the pull rod 2.

[0041] In the embodiment, the pull rod 2 is divided into a left pull rod 2 and a right pull rod 2. One end of the left pull rod 2 and the right pull rod 2 is connected with the connecting piece 4. The middle part of the connecting piece 4 is provided with a pin hole. The pin bolt 3 passes through the pin hole and the bolt hole of the tower flange 1 to fix the pull rod 2. The other side of the left pull rod 2 and the right pull rod 2 is provided with external threads. The right and left screw sleeve 5 is provided with two groups of opposite internal threads. When the two pull rods 2 are respectively screwed into the right and left screw sleeve 5, the right and left screw sleeve 5 is rotated, the distance between the left pull rod 2 and the right pull rod 2 is increased or reduced, and the length adjustment and tensioning function of the pull rod 2 are realized.

[0042] This design allows the device to adjust the length according to tower flanges 1 of different diameters, improving the versatility and adaptability of the device.

[0043] Further, at least one connecting piece 4 is provided with a tightening bolt 6 along the axis of the pull rod 2. The tightening bolt 6 can be tightened or loosened along the axis of the pull rod 2 by rotating.

[0044] Specifically, the tightening bolt is rotated, the side wall of the pin bolt 3 at the adjusting end is attached to the inner wall of the connecting piece 4 at the adjusting end, so as to ensure that the length of the device matches the diameter of the tower flange 1. If necessary, the right and left screw sleeve 5 can be adjusted to ensure that the length of the device matches the diameter of the tower flange 1.

[0045] Through the adjustment of the tightening bolt 6, the close connection between the pin bolt 3 and the tower flange 1 can be ensured, the loosening is prevented, a part of the stress of the pin bolt 3 is dispersed, the stress concentration is prevented, the safety and stability of the device are improved.

[0046] Further, the interface between the pin bolt 3 and the tightening bolt 6 is provided with a groove 7 matched with the end of the tightening bolt 6.

[0047] The design of the groove 7 ensures that the tightening bolt 6 can accurately align and tighten the pin bolt 3 when rotating, enhancing the reliability and accuracy of the connection.

[0048] Further, the tightening bolt 6 is provided with external threads, and the connecting piece 4 is provided with a bolt hole with corresponding internal threads.

[0049] The threaded structure enables the clamping bolt 6 to be firmly fixed on the connecting piece 4 when rotating, without loosening or falling off, thereby improving the overall stability of the device.

[0050] Further, a flexible buffer pad is arranged in the groove 7.

[0051] The flexible buffer pad can absorb and alleviate the impact of external load on the pin bolt 3 and the clamping bolt 6, protect the key components, and prolong the service life of the device.

[0052] Further, the bottom of the pin bolt 3 is provided with external threads, and the pin bolt 3 is fixed to the bolt hole of the tower flange 1 through a matching nut 8.

[0053] This fixing method ensures the firm connection between the pin bolt 3 and the tower flange 1, prevents loosening, and improves the safety and stability of the device.

[0054] Further, a gasket 9 is arranged between the nut 8 and the pin bolt 3.

[0055] The gasket 9 can enhance the sealing and stability of the connection, prevent moisture and dust from entering the connection part, and improve the corrosion resistance and service life of the device.

[0056] Further, the pull rod 2 is disconnected in the middle and provided with external threads, the inside of the positive and negative screw sleeve 5 is provided with opposite internal threads at both ends, and the middle of the pull rod 2 is arranged at both ends of the positive and negative screw sleeve 5 with an adjustment gap.

[0057] The longer the positive and negative screw sleeve 5 is, the larger the spacing can be left, thereby increasing the adjustable range of the pull rod 2.

[0058] This adjustment mechanism enables the length of the pull rod 2 to be accurately adjusted according to actual needs, thereby improving the versatility and adaptability of the device.

[0059] Further, an observation window 10 is arranged in the middle of the positive and negative screw sleeve 5.

[0060] The observation window 10 facilitates the observation of the internal adjustment by the operator, real-time understanding of the remaining space of the gap, or accurate understanding of the gap during installation, thereby ensuring the accuracy and safety of the adjustment process.

[0061] Further, the cross section of the positive and negative screw sleeve 5 is designed as a polygon for easy clamping and adjustment.

[0062] The polygonal cross section design enhances the stability and torsional resistance of the positive and negative screw sleeve 5 during adjustment, and facilitates clamping and adjustment by the operator.

[0063] Example Two

[0064] On the basis of embodiment one, a method for using a large megawatt wind turbine tower flange deformation prevention device includes the following steps:

[0065] 1. Preparation

[0066] Check if all parts of the tower flange 1 deformation prevention device are complete, including the pull rod 2, the connecting piece 4, the pin bolt 3, the jacking bolt 6, the flexible buffer pad, the nut 8 and the gasket 9, etc.

[0067] Ensure that all parts are not damaged, deformed or rusted, especially the key parts of the pull rod 2 and the pin bolt 3.

[0068] Prepare necessary tools such as wrench, torque wrench, etc.

[0069] 2. Install the connecting piece 4

[0070] Place the connecting piece 4 connected with the pull rod 2 on the edge of the tower flange 1, and ensure that the position of the connecting piece 4 is accurate to facilitate the subsequent adjustment of the pull rod 2.

[0071] Preliminarily fix the connecting piece 4 on the tower flange 1 through the pin bolt 3, and do not tighten it completely, leaving some adjustment space.

[0072] 3. Install the pull rod 2

[0073] Adjust the length of the pull rod 2 by rotating the positive and negative screw sleeve 5 to adapt to the diameter of the tower flange 1.

[0074] Ensure that the pull rod 2 remains straight during the adjustment process without bending or deformation.

[0075] 4. Tighten the pin bolt 3

[0076] Use a wrench or torque wrench to tighten the pin bolt 3 completely in the bolt hole of the tower flange 1.

[0077] During the tightening process, pay attention to the position of the connecting piece 4 to ensure that it remains stable without deviation or looseness.

[0078] Place the gasket 9 between the pin bolt 3 and the nut 8 to enhance the sealing and stability of the connection.

[0079] 5. Adjust the jacking bolt 6

[0080] Rotate the jacking bolt 6 to tighten the pin bolt 3 along the axis of the pull rod 2.

[0081] Ensure that the flexible buffer pad can be effectively compressed during the tightening of the jacking bolt 6, playing a buffering and protection role.

[0082] After tightening the jacking bolt 6, adjust the positive and negative screw sleeve 5 again to tighten the pull rod 2.

[0083] 6. Inspection and adjustment

[0084] Perform a comprehensive inspection of the entire anti-deformation device to ensure that all components are properly installed and free of looseness or abnormalities.

[0085] Use a torque wrench to perform torque detection on the pin bolts 3 and the jacking bolts 6 to ensure that they reach the required safety torque value.

[0086] According to the actual situation, fine-tune the device to ensure that it can effectively prevent the deformation of the tower flange 1.

[0087] 7. Storage and transportation

[0088] During the storage and transportation of the tower flange 1, ensure that the anti-deformation device is always in the installed state.

[0089] Avoid subjecting the tower flange 1 to severe impact or heavy pressure to prevent damage or failure of the device.

[0090] 8. Disassembly

[0091] After the tower flange 1 is installed, disassemble it in the reverse order.

[0092] First loosen the jacking bolts 6, then remove the pin bolts 3, and finally remove the pull rods 2.

[0093] Properly store the disassembled components for future use.

[0094] Example Three

[0095] In this example, as shown in Figure 4 , three sets of the device are used, arranged parallel to each other along the axis of the tower cylinder. This arrangement has the advantage that multiple pull rod 2 systems can make the tower cylinder more stable and improve its reliability.

[0096] The above only describes the preferred embodiments of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A large megawatt wind turbine tower flange deformation prevention device, characterized in that: The tower flange (1) is provided with bolt holes, the pull rod (2) is provided with connecting pieces (4) at both ends, and the connecting pieces (4) are fixed to the tower flange (1) by the pin bolt (3); The middle part of the pull rod (2) is provided with a forward and reverse screw sleeve (5) for adjusting the length of the pull rod (2).

2. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 1, characterized in that: At least one connecting piece (4) is provided with a tightening bolt (6) along the axis of the pull rod (2), which can be tightened or loosened along the axis of the pull rod (2) by rotating.

3. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 2, characterized in that: The pin bolt (3) is provided with a groove (7) matching the end of the tightening bolt (6) at the interface with the tightening bolt (6).

4. A wind turbine tower flange deformation prevention device for a large megawatt wind turbine tower as claimed in claim 2, characterized in that: The tightening bolt (6) is provided with external threads, and the connecting piece (4) is provided with bolt holes with corresponding internal threads.

5. A wind turbine tower flange deformation prevention device for a large megawatt wind turbine tower as claimed in claim 3, characterized in that: The groove (7) is provided with a flexible buffer pad.

6. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 1, characterized in that: The bottom of the pin bolt (3) is provided with external threads, which is fixed to the bolt hole of the tower flange (1) by a matching nut (8).

7. A wind turbine tower flange deformation prevention device for a large megawatt wind turbine tower as claimed in claim 6, characterized in that: The nut (8) and the pin bolt (3) are provided with a gasket (9) therebetween.

8. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 1, characterized in that: The middle part of the pull rod (2) is disconnected and provided with external threads, the inside of the forward and reverse screw sleeve (5) is provided with reverse internal threads at both ends, and the middle part of the pull rod (2) is provided at both ends of the forward and reverse screw sleeve (5) with adjustment gap.

9. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 1, characterized in that: The middle part of the forward and reverse screw sleeve (5) is provided with an observation window (10).

10. A deformation prevention device for a flange of a tower of a multi-megawatt wind turbine generator according to claim 1, characterized in that: The cross section of the forward and reverse screw sleeve (5) is polygonal to facilitate clamping adjustment.

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