A prefabricated coating anti-corrosion construction method for wind turbine tower corrosion protection
Through the prefabrication method, a rolling frame and an electric rotating device are used on land to clean the outer wall of the tower, and anti-corrosion tape is wrapped to form a multi-layer anti-corrosion structure, which solves the construction progress and cost control problems of offshore wind power towers and achieves safe and efficient anti-corrosion effects.
Patent Information
- Application Number
- CN202310613775.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-05-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2043-05-29
AI Technical Summary
In the existing technology, the coating anti-corrosion technology is affected by tides and weather during the construction of offshore wind turbine towers, the construction progress and cost are difficult to control, and the construction is difficult.
The prefabrication method is adopted on land to clean the outer wall of the tower and apply anti-corrosion paste through a rolling frame and an electric rotating device. The anti-corrosion tape is wrapped with a strong magnet to form a multi-layer anti-corrosion structure, including anti-corrosion paste, anti-corrosion tape and glass fiber cloth, forming a hard outer protective layer.
It enables anti-corrosion construction to be completed quickly and safely on land, reduces construction costs and difficulty, improves anti-corrosion effects and overall strength, and avoids the dangers of offshore construction.
Smart Images
Figure CN116792260B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of corrosion protection for the outer wall of offshore wind turbine tower pile foundations, and in particular to a prefabricated coating anti-corrosion construction method for wind turbine tower corrosion protection. Background Art
[0002] As a key area of renewable energy development in my country, offshore wind power will enter a new period of development. With the surge in offshore wind power across the country, the corrosion protection of the inner and outer wall structures of its tower pile foundation has also become an important issue in engineering construction. For the corrosion protection of the outer wall of offshore wind power tower pile foundation, heavy anti-corrosion coatings, cathodic protection and coating anti-corrosion technology are generally used. Coating anti-corrosion technology is increasingly popular because of its ability to be constructed in rust and water, long anti-corrosion life and green environmental protection. At present, the construction method of coating anti-corrosion technology is carried out in accordance with the requirements of national standards.
[0003] However, the construction method in the national standard is not targeted and can only be used to prepare anti-corrosion structures for steel pipe piles of in-service wind turbine towers. When the coating anti-corrosion technology is used for construction in the sea, the construction period will be affected by tides and weather, and the construction progress and construction period cannot be controlled artificially. In addition, offshore construction is difficult and dangerous, which greatly increases the construction cost of the coating anti-corrosion technology. Therefore, technical personnel in this field provide a prefabricated coating anti-corrosion construction method for wind turbine tower corrosion protection to solve the problems raised in the above background technology. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the present invention provides a prefabricated coating anti-corrosion construction method for wind power tower corrosion protection, which solves the problems of inconvenient construction and high construction cost of coating anti-corrosion technology in the sea.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a prefabricated method for preparing an anti-corrosion structure for the outer wall of a wind turbine tower, comprising a wind turbine tower, wherein a rolling frame is symmetrically arranged at the lower end of the wind turbine tower, an electric rotating device is arranged at the center of one side wall of the wind turbine tower, a brush is arranged at the upper end of the side wall of the electric rotating device near the side wall of the wind turbine tower, a second layer of anti-corrosion belt and a first layer of anti-corrosion belt are arranged on the side wall of the electric rotating device, the first layer of anti-corrosion belt is wrapped around the side wall of the wind turbine tower and connected to the side wall of the wind turbine tower through a strong magnet, and the second layer of anti-corrosion belt is bonded to the side wall of the first layer of anti-corrosion belt.
[0006] A prefabricated cladding anti-corrosion construction method for wind turbine tower corrosion protection includes the following construction steps:
[0007] S1. To treat the tower's outer wall surface, first hoist the wind turbine tower to the upper end of two rolling frames. Then, install an electric rotating device on one side of the wind turbine tower. Install a brush on the rotating shaft of the electric rotating device. Adjust the distance between the electric rotating device and the wind turbine tower to adjust the contact stress between the brush and the wind turbine tower's outer wall. Start the rolling frames to slowly rotate the wind turbine tower clockwise. Simultaneously, start the electric rotating device to slowly rotate the brush clockwise. The brush will clean dirt from the wind turbine tower's surface. After cleaning, replace the brush with a new one. This completes the wind turbine tower's outer wall surface treatment.
[0008] S2. Construction of the anti-corrosion paste. The anti-corrosion paste is first heated before construction to improve the fluidity of the anti-corrosion paste. The heating can be done in the form of an electric heating rod. By adjusting the temperature of the electric heating rod, the temperature of the anti-corrosion paste is controlled between 40°C and 50°C. When the anti-corrosion paste reaches the required temperature, a gear pump is used to evenly deliver the anti-corrosion paste to the groove formed between the wind turbine tower and the brush. At this time, the two rolling racks and the electric rotating device are turned on to slowly rotate the wind turbine tower in a counterclockwise direction while slowly rotating the brush in a clockwise direction. By adjusting the distance between the electric rotating device and the wind turbine tower, the distance between the brush and the wind turbine tower is adjusted to control the thickness of the anti-corrosion paste.
[0009] S3. Construction of anti-corrosion tape. The construction of anti-corrosion tape is divided into two layers. During the construction of the first layer of anti-corrosion tape, multiple rolls of anti-corrosion tape are tightly installed on the rotating shaft of the electric rotating device, and then the outer end is pulled out to a certain length. A strong magnet is used to adhere the pulled-out first layer of anti-corrosion tape to the outer wall of the wind turbine tower. At this time, the rolling frame is started to make the wind turbine tower rotate slowly clockwise. The resistance of the electric rotating device itself makes the first layer of anti-corrosion tape fully stretched, so that the first layer of anti-corrosion tape is tightly wrapped around the wind turbine tower that has completed the anti-corrosion paste construction. After the first layer of anti-corrosion tape is wrapped around the surface, remove the strong magnet and install a new second layer of anti-corrosion tape on the rotating shaft of the electric rotating device. When constructing the second layer of anti-corrosion tape, install a half-width anti-corrosion tape roll at the outermost ends of the rotating shaft of the electric rotating device, and install the entire roll of the second layer of anti-corrosion tape on the remaining middle part. This ensures that the middle position of the second layer of anti-corrosion tape is exactly pressed against the overlapping position of the first layer of anti-corrosion tape. The winding construction method of the second layer of anti-corrosion tape is the same as that of the first layer of anti-corrosion tape.
[0010] S4. First, use a roller brush to apply a layer of resin glue on the surface of the second layer of corrosion protection tape, so that the surface of the second layer of corrosion protection tape is fully infiltrated with the resin glue, and then paste a layer of chopped strands mat on the surface of the resin glue. After pasting the chopped strands mat, apply a layer of resin glue, and use a roller brush to repeatedly roll and squeeze to fully infiltrate the chopped strands mat with the resin glue, and at the same time, exhaust the air inside the chopped strands mat; paste a layer of alkali-free glass fiber cloth on the surface of the first layer of chopped strands mat that is fully infiltrated with the resin glue, and use a roller brush to apply a layer of resin glue on the surface of the alkali-free glass fiber cloth, and repeatedly squeeze and roll to fully infiltrate the alkali-free glass fiber cloth. Repeat the previous step twice to complete the pasting of two layers of alkali-free glass fiber cloth, and bond a layer of chopped strands mat to the outermost layer of alkali-free glass fiber cloth. Use a roller brush to apply a layer of resin glue on the surface of the chopped strands mat to fully soak the resin glue. After the surface of the outermost layer of resin glue is dry, polish it. After polishing, apply a layer of gel coat resin solution and solidify it to form an integral, hard outer protective layer. After waiting for the gel coat resin glue to completely solidify, polish the surface of the outer protective layer so that there are no obvious bumps and burrs on the surface of the outer protective layer, thus completing the overall coating and anti-corrosion construction.
[0011] The present invention provides a prefabricated cladding anti-corrosion construction method for wind turbine tower corrosion protection. It has the following beneficial effects:
[0012] 1. In the present invention, by controlling the rotation speed and direction of the rolling frame and the electric rotating device on land, the cleaning of the surface of the wind turbine pile foundation, the application of anti-corrosion paste and the winding of the anti-corrosion tape can be completed conveniently and quickly; the on-site production of the outer protective layer can make the protective layer and the internal anti-corrosion tape tightly and firmly combined, better isolate the entry of external corrosive media such as air and water, and greatly increase the anti-corrosion life.
[0013] 2. In the present invention, the long-term coating anti-corrosion construction method not only significantly reduces the construction difficulty and construction cost, completely avoids the occurrence of various dangerous situations during offshore construction, but also can make the entire coating anti-corrosion system more tightly and firmly combined, greatly improving the overall strength and anti-corrosion effect of the coating anti-corrosion system, and realizing the technical innovation of "prefabrication on shore and piling in the sea". BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Schematic diagram of the construction method for the outer wall surface of the tower and the construction method of the anti-corrosion paste involved in the present invention;
[0015] Figure 2 It is a schematic diagram of the construction method of the anti-corrosion strip involved in the present invention.
[0016] Among them, 1. Wind turbine tower; 2. Brush; 3. Electric rotating device; 4. Rolling frame; 5. Second anti-corrosion strip; 6. First anti-corrosion strip; 7. Strong magnet. DETAILED DESCRIPTION
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1
[0018] like Figure 1-2 As shown, an embodiment of the present invention provides a prefabricated anti-corrosion structure for the outer wall of a wind turbine tower, comprising a wind turbine tower 1, a rolling frame 4 symmetrically arranged at the lower end of the wind turbine tower 1, an electric rotating device 3 arranged at the center of a side wall near the wind turbine tower 1, a brush 2 arranged at the upper end of the side wall of the electric rotating device 3 near the side wall of the wind turbine tower 1, a second layer of anti-corrosion tape 5 and a first layer of anti-corrosion tape 6 arranged on the side wall of the electric rotating device 3, the first layer of anti-corrosion tape 6 is wrapped around the side wall of the wind turbine tower 1 and connected to the side wall of the wind turbine tower 1 through a strong magnet 7, and the second layer of anti-corrosion tape 5 is bonded to the side wall of the first layer of anti-corrosion tape 6.
[0019] A prefabricated cladding anti-corrosion construction method for wind turbine tower corrosion protection includes the following construction steps:
[0020] S1. Surface treatment of the tower's outer wall: First, hoist the wind turbine tower 1 to the upper end of two rolling frames 4. Then, install the electric rotating device 3 on one side of the wind turbine tower 1 and install the brush 2 on the rotating shaft of the electric rotating device 3. Adjust the distance between the electric rotating device 3 and the wind turbine tower 1 to adjust the contact stress between the brush 2 and the outer wall of the wind turbine tower 1. Start the rolling frames 4 to slowly rotate the wind turbine tower 1 clockwise. Simultaneously, start the electric rotating device 3 to slowly rotate the brush 2 clockwise. The brush 2 will clean dirt from the surface of the wind turbine tower 1. After cleaning, replace the brush 2 with a new one. This completes the surface treatment of the wind turbine tower 1's outer wall.
[0021] S2. Construction of the anti-corrosion paste. The anti-corrosion paste is first heated and heated before construction to improve the fluidity of the anti-corrosion paste. The heating can be carried out in the form of an electric heating rod. By adjusting the temperature of the electric heating rod, the temperature of the anti-corrosion paste is controlled between 40°C and 50°C. When the anti-corrosion paste reaches the required temperature, a gear pump is used to evenly deliver the anti-corrosion paste to the groove formed between the wind turbine tower 1 and the brush 2. At this time, the two rolling racks 4 and the electric rotating device 3 are turned on, so that the wind turbine tower 1 rotates slowly in the counterclockwise direction, while the brush 2 rotates slowly in the clockwise direction. By adjusting the distance between the electric rotating device 3 and the wind turbine tower 1, the distance between the brush 2 and the wind turbine tower 1 is adjusted to control the thickness of the anti-corrosion paste.
[0022] S3. Construction of the anti-corrosion belt. The construction of the anti-corrosion belt is divided into two layers. During the construction of the first layer of anti-corrosion belt 6, multiple rolls of anti-corrosion belt are tightly installed on the rotating shaft of the electric rotating device 3, and then the outer end is pulled out to a certain length. The pulled-out first layer of anti-corrosion belt 6 is bonded to the outer wall of the wind turbine tower 1 using a strong magnet 7. At this time, the rolling frame 4 is started to make the wind turbine tower 1 rotate slowly clockwise. The first layer of anti-corrosion belt 6 is fully stretched by the resistance of the electric rotating device 3 itself, so that the first layer of anti-corrosion belt 6 is tightly wrapped around the wind turbine tower after the anti-corrosion paste construction is completed. After the coating construction of the first layer of anti-corrosion tape 6 is completed, the strong magnet 7 is removed, and a new second layer of anti-corrosion tape 5 is installed on the rotating shaft of the electric rotating device 3. When constructing the second layer of anti-corrosion tape 5, a half-width anti-corrosion tape roll is installed at the outermost ends of the rotating shaft of the electric rotating device 3, and the entire roll of the second layer of anti-corrosion tape 5 is installed in the remaining middle part. This ensures that the middle position of the second layer of anti-corrosion tape 5 is exactly pressed against the overlapping position of the first layer of anti-corrosion tape 6. The winding construction method of the second layer of anti-corrosion tape 5 is the same as that of the first layer of anti-corrosion tape 6;
[0023] S4. First, use a roller brush to apply a layer of resin glue on the surface of the second layer of anti-corrosion tape 5, so that the surface of the second layer of anti-corrosion tape 5 is fully infiltrated with the resin glue, and then paste a layer of chopped strands mat on the surface of the resin glue. After pasting the chopped strands mat, apply a layer of resin glue, and use a roller brush to repeatedly roll and squeeze to fully infiltrate the chopped strands mat with the resin glue, and at the same time, exhaust the air inside the chopped strands mat; paste a layer of alkali-free glass fiber cloth on the surface of the first layer of chopped strands mat fully infiltrated with the resin glue, and use a roller brush to apply a layer of resin glue on the surface of the alkali-free glass fiber cloth, and repeatedly squeeze and roll to fully infiltrate the alkali-free glass fiber cloth. Infiltrate with resin glue; repeat the previous step twice to complete the pasting of two layers of alkali-free glass fiber cloth, and bond a layer of chopped strands mat to the outermost layer of alkali-free glass fiber cloth. Use a roller brush to apply a layer of resin glue on the surface of the chopped strands mat to fully infiltrate the resin glue. After the surface of the outermost layer of resin glue is dry, polish it. After polishing, apply a layer of gel coat resin solution and solidify it to form an integral, hard outer protective layer. After waiting for the gel coat resin glue to completely solidify, polish the surface of the outer protective layer so that there are no obvious bumps and burrs on the surface of the outer protective layer, thus completing the overall coating and anti-corrosion construction.
[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A prefabricated coating anti-corrosion construction method for wind turbine tower corrosion protection, wherein a prefabricated method is used to prepare an anti-corrosion structure for the outer wall of a wind turbine tower, comprising a wind turbine tower (1), wherein a rolling frame (4) is symmetrically arranged at the lower end of the wind turbine tower (1), an electric rotating device (3) is arranged at the center of a side wall of the wind turbine tower (1), a brush (2) is arranged at the upper end of the side wall of the electric rotating device (3) near the side wall of the wind turbine tower (1), a second layer of anti-corrosion belt (5) and a first layer of anti-corrosion belt (6) are arranged on the side wall of the electric rotating device (3), the first layer of anti-corrosion belt (6) is wound on the side wall of the wind turbine tower (1) and connected to the side wall of the wind turbine tower (1) by a strong magnet (7), and the second layer of anti-corrosion belt (5) is bonded to the side wall of the first layer of anti-corrosion belt (6), characterized in that: The prefabricated anti-corrosion coating construction method includes the following construction steps: S1. Treatment of the outer wall surface of the tower: first, the wind turbine tower (1) is hoisted to the upper end of the two rolling frames (4); then, the electric rotating device (3) is installed on one side of the wind turbine tower (1); the brush (2) is installed on the rotating shaft of the electric rotating device (3); the contact stress between the brush (2) and the outer wall of the wind turbine tower (1) is adjusted by adjusting the distance between the electric rotating device (3) and the wind turbine tower (1); the wind turbine tower (1) is rotated slowly clockwise by starting the rolling frame (4); and the electric rotating device (3) is started at the same time, and the brush (2) is rotated slowly clockwise. The brush (2) cleans the dirt on the surface of the wind turbine tower (1); after cleaning, the brush (2) is replaced with a new brush (2); and thus, the treatment of the outer wall surface of the wind turbine tower (1) is completed; S2. Construction of the anti-corrosion paste. Before construction, the anti-corrosion paste is first heated to increase its fluidity. The heating is carried out in the form of an electric heating rod. The temperature of the anti-corrosion paste is controlled between 40°C and 50°C by adjusting the temperature of the electric heating rod. When the anti-corrosion paste reaches the required temperature, a gear pump is used to evenly deliver the anti-corrosion paste to the groove formed between the wind turbine tower (1) and the brush (2). At this time, the two rolling racks (4) and the electric rotating device (3) are turned on to rotate the wind turbine tower (1) slowly in the counterclockwise direction, and the brush (2) is rotated slowly in the clockwise direction. The distance between the brush (2) and the wind turbine tower (1) is adjusted by adjusting the distance between the electric rotating device (3) and the wind turbine tower (1), thereby controlling the thickness of the anti-corrosion paste. S3. Construction of the anti-corrosion belt. The construction of the anti-corrosion belt is divided into two layers. When constructing the first layer of anti-corrosion belt (6), multiple rolls of anti-corrosion belt are tightly installed on the rotating shaft of the electric rotating device (3). Then the outer end is pulled out to a certain length. A strong magnet (7) is used to adhere the pulled-out first layer of anti-corrosion belt (6) to the outer wall of the wind turbine tower (1). At this time, the rolling frame (4) is started to make the wind turbine tower (1) rotate slowly clockwise. The first layer of anti-corrosion belt (6) is fully stretched by the resistance of the electric rotating device (3), so that the first layer of anti-corrosion belt (6) is tightly wrapped around the wind turbine tower after the anti-corrosion paste construction is completed. After the coating construction of the first layer of anti-corrosion tape (6) is completed, the strong magnet (7) is removed, and a new second layer of anti-corrosion tape (5) is installed on the rotating shaft of the electric rotating device (3). When the second layer of anti-corrosion tape (5) is constructed, a half-width anti-corrosion tape roll is installed at the outermost ends of the rotating shaft of the electric rotating device (3), and the entire roll of the second layer of anti-corrosion tape (5) is installed in the remaining middle part. This ensures that the middle position of the second layer of anti-corrosion tape (5) is just pressed against the overlapping position of the first layer of anti-corrosion tape (6). The winding construction method of the second layer of anti-corrosion tape (5) is the same as the construction method of the first layer of anti-corrosion tape (6); S4. First, use a roller brush to apply a layer of resin glue on the surface of the second layer of corrosion protection tape (5) so that the surface of the second layer of corrosion protection tape (5) is fully soaked with the resin glue, and then paste a layer of chopped strands mat on the surface of the resin glue. After pasting the chopped strands mat, apply a layer of resin glue, and use a roller brush to repeatedly roll and squeeze so that the resin glue is fully soaked in the chopped strands mat and exhaust the air inside the chopped strands mat; paste a layer of alkali-free glass fiber cloth on the surface of the first layer of chopped strands mat that is fully soaked with the resin glue, and use a roller brush to apply a layer of resin glue on the surface of the alkali-free glass fiber cloth, and make the alkali-free glass fiber cloth soaked in the resin glue by repeated squeezing and rolling. Fully soak with resin glue; repeat the previous step twice to complete the pasting of two layers of alkali-free glass fiber cloth, and glue a layer of chopped strands mat on the outermost layer of alkali-free glass fiber cloth. Use a roller brush to apply a layer of resin glue on the surface of the chopped strands mat to fully soak the resin glue. After the surface of the outermost layer of resin glue is dry, polish it. After polishing, apply a layer of gel coat resin solution and solidify it to form an integral, hard outer protective layer. After waiting for the gel coat resin solution to completely solidify, polish the surface of the outer protective layer so that there are no obvious bumps and burrs on the surface of the outer protective layer, thus completing the overall coating and anti-corrosion construction.