Method for installing lightning protection shielding net of cabin cover of wind turbine generator

Abstract

The invention discloses a method for installing a wind turbine generator cabin cover lightning protection shielding net, which comprises the following steps: S1, spraying a cleaning agent to comprehensively clean the two sides and the upper side of a cabin cover to ensure that the surface is clean and dust-free; s2, double-faced adhesive tape is pasted, specifically, the double-faced adhesive tape is pasted in the cabin cover, and preparation is made for subsequent pasting of a copper net; and S3, copper net pasting, namely, copper net pasting is conducted from the tail of the cabin to the impeller from bottom to top. The wind turbine generator cabin cover lightning protection shielding net has the advantage of good lightning protection effect, and solves the problems that in the installation process of an existing wind turbine generator cabin cover lightning protection shielding net, the lightning protection shielding net installed in a wind turbine generator cabin is inconvenient to form an integral lightning protection structure, and if the integral structure cannot be formed, the lightning protection shielding net is inconvenient to install. And electromagnetic pulses generated by thunder and lightning may penetrate through a shielding net to damage equipment in a cabin.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a method for installing a lightning protection shielding net for a nacelle cover of a wind turbine generator set. Background Art

[0002] The lightning shielding net of the wind turbine nacelle cover adopts the working principle of the Faraday cage, using metal or good conductors to form the cage. According to the condition of electrostatic balance of the conductor, the cage is an equipotential body with zero internal potential difference and is connected to the ground. When current flows through the cage, it can effectively discharge the current into the ground, isolating the electric field and electromagnetic wave interference outside the cage, and playing the role of electrostatic shielding.

[0003] The main reason for installing lightning protection nets on the nacelle of wind turbines is to protect against lightning. Wind turbines are usually located in open areas or on top of mountains, which are prone to lightning strikes. Therefore, effective lightning protection measures are essential to ensure the safe operation of the equipment. Lightning protection nets can guide lightning currents safely into the ground, preventing lightning from directly hitting electrical equipment in the nacelle, and reducing equipment damage or failures caused by lightning strikes.

[0004] During the installation process of the existing wind turbine cabin cover lightning shielding net, it is not convenient to form the lightning shielding net installed inside the wind turbine cabin into an integral lightning protection structure. If an integral structure cannot be formed, the electromagnetic pulse generated by lightning may penetrate the shielding net and cause damage to the equipment inside the cabin. Summary of the invention

[0005] The purpose of the present invention is to provide a method for installing a lightning protection shielding net for a wind turbine nacelle cover, which has the advantage of good lightning protection effect and solves the problem that during the installation process of the existing lightning protection shielding net for the wind turbine nacelle cover, it is not convenient to form an integral lightning protection structure with the lightning protection shielding net installed inside the wind turbine nacelle. If an integral structure cannot be formed, the electromagnetic pulse generated by lightning may penetrate the shielding net and cause damage to the equipment inside the nacelle.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for installing a lightning protection shielding net for a wind turbine nacelle cover, comprising the following steps:

[0007] S1. Spray detergent on both sides and the upper side of the nacelle cover to ensure that the surface is clean and dust-free;

[0008] S2. Paste double-sided tape on the inside of the cabin cover to prepare for the subsequent pasting of the copper mesh;

[0009] S3, copper mesh pasting, that is, pasting the copper mesh from bottom to top from the tail of the nacelle to the impeller;

[0010] S4. Apply epoxy resin glue, mix epoxy resin glue and curing agent evenly to form glue, use a scraper to evenly apply the glue on the copper mesh, including all copper tapes, to ensure that the glue level is even and avoid dripping and gathering;

[0011] S5. Connect the ground wire, reserve a grounding point inside the cabin, connect one end of the ground wire to the Faraday cage of the cabin, and install the other end of the ground wire on the copper net to ensure good grounding;

[0012] S6. Final inspection: check the installation of the copper mesh, then cut off the excess copper mesh, clean up the site, and ensure that the work area is tidy.

[0013] As a preferred method of installing a lightning shielding net for a wind turbine cabin cover of the present invention, when spraying the detergent in S1, keep it for 2-5 minutes, and then use a rag to clean it. During the cleaning process, the interior of the cabin is ventilated, and the staff wear masks for protection.

[0014] As a preferred method of installing a lightning protection shielding net for a wind turbine nacelle cover of the present invention, the locations where the double-sided tape is pasted inside the nacelle cover in S2 include the inner wall of the nacelle cover, the connection between the inner wall of the nacelle cover, around the lampshade, the ventilation holes and the radiator.

[0015] As a preferred method of installing a lightning shielding net for a wind turbine nacelle cover of the present invention, when pasting the copper mesh in S3, first paste the tail section and the middle section of the nacelle. When pasting the tail section and the middle section, cut the copper mesh according to the measurement results, starting from the lower left corner of the tail of the nacelle, and gradually lay it flat to the upper right to ensure that the copper mesh is flat and neat and fits the nacelle. At the position of the cabin light, cut to avoid the two bases at the bottom of the lampshade, and keep covering in the middle for pasting. When pasting the front section of the nacelle, extend the copper mesh by 5CM at the modeling line to facilitate the connection of the ground wire. After pasting, paste copper tape at the seams of the copper mesh to ensure that the copper mesh forms a continuous whole.

[0016] As a preferred method of installing a lightning shielding net for a wind turbine nacelle cover of the present invention, the ratio of the epoxy resin glue to the curing agent in S4 is 1:1.5. When mixing, stir for 30-40 seconds to turn the glue into pure white.

[0017] As a preferred method of installing a lightning protection shielding net for a wind turbine nacelle cover of the present invention, the proportion of the curing agent is adjusted according to the temperature on site, increasing the proportion of the curing agent when the temperature is low and reducing the proportion of the curing agent when the temperature is high.

[0018] As a preferred method of installing a lightning shielding net for a wind turbine nacelle cover of the present invention, when applying the glue, the worker wears a mask to ensure that the vents of the nacelle are open and air is flowing in the nacelle.

[0019] As a preferred method of installing a lightning shielding net for a wind turbine nacelle cover of the present invention, the ground wire in S5 is cut with a cable pliers before installation, the copper cores at both ends of the ground wire are exposed with side cutting pliers, and the copper core and the wire nose are pressed together with a wire crimping pliers, and the ground wire and the copper net are connected with M8 bolts.

[0020] As a preferred method of installing a lightning shielding net for a wind turbine nacelle cover of the present invention, when inspecting the copper mesh in S6, check whether all the copper meshes are completely covered, whether the connections are tight, and whether the glue applied is loose, to ensure that there are no omissions or errors.

[0021] As a preferred method for installing a lightning protection shielding net for a nacelle cover of a wind turbine generator system of the present invention, the scraper in S4 includes a handle, a surface of the handle is provided with an anti-slip groove, one end of the handle is fixedly connected to a threaded head, a threaded sleeve is threadedly sleeved on the surface of the threaded head, a scraper is fixedly connected to one end of the threaded sleeve, an expansion plate and a fixing piece are respectively installed on one side of the scraper, the expansion plate is movably connected to the scraper, a fixing bolt is installed on the expansion plate, a plurality of mounting holes are provided on the scraper, the fixing bolt is threadedly connected to the mounting hole to fix the expansion plate, the upper and lower sides of the fixing piece are fixedly connected to a sliding rod, a sliding rod is movably sleeved on the surface of the sliding rod, the sliding rod is fixedly connected to the expansion plate, an arc plate is movably connected to the other side of the scraper, an adjustment groove and a limit groove are provided on the arc plate, a threaded rod is movably connected inside the adjustment groove, a limit block is movably connected inside the limit groove, the threaded rod and the limit block are fixedly connected to the scraper, a nut is threadedly sleeved on the surface of the threaded rod, and the nut is installed on the adjustment groove to fix it.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can effectively guide lightning current into the ground by fully covering the copper mesh inside and outside the nacelle cover and ensuring that it forms a continuous whole, reduce the impact of lightning on the electronic equipment inside the wind turbine, and improve the lightning protection capability of the entire system. By using a specially designed scraper tool, it can not only efficiently apply epoxy resin glue, but also adapt to surfaces of different shapes, such as flat surfaces and curved surfaces, thereby ensuring good adhesion between the copper mesh and the nacelle surface and improving installation quality and efficiency.

[0024] 2. During the cleaning and gluing process, the present invention effectively protects the health and safety of operators by ventilating the operating environment and protecting individuals, such as wearing masks and opening vents. The ground wire is connected to the copper mesh with M8 bolts, and the copper mesh is fully inspected after installation, thereby ensuring the reliability and stability of the lightning protection system. It is also convenient for future inspection and maintenance of the system. The copper mesh is fixed with double-sided tape and epoxy resin glue, which reduces pollution to the environment and energy consumption compared to traditional welding methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the process of the present invention;

[0026] Figure 2 This is a front view of the scraper of the present invention;

[0027] Figure 3 It is the rear view of the scraper of the present invention.

[0028] In the figure: 1. handle; 2. anti-slip groove; 3. threaded head; 4. sliding sleeve; 5. sliding rod; 6. extension plate; 7. scraper; 8. fixing bolt; 9. fixing piece; 10. threaded sleeve; 11. mounting hole; 12. arc plate; 13. limit block; 14. threaded rod; 15. nut; 16. limit groove; 17. adjustment groove. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 3 A method for installing a lightning protection shielding net for a wind turbine nacelle cover comprises the following steps:

[0030] S1. Spray detergent on both sides and the top of the nacelle cover to ensure that the surface is clean and dust-free.

[0031] When spraying the detergent, keep it on for 2-5 minutes, then use a rag to clean it. During the cleaning process, the cabin should be ventilated and the staff should wear masks for protection.

[0032] S2. Paste double-sided tape on the inside of the cabin cover to prepare for the subsequent pasting of the copper mesh.

[0033] The locations where double-sided tape is pasted inside the nacelle cover include the inner wall of the nacelle cover, the connection between the inner wall of the nacelle cover, around the lampshade, the ventilation holes and the radiator.

[0034] S3, copper mesh pasting, that is, pasting the copper mesh from bottom to top from the tail of the cabin to the impeller.

[0035] When pasting the copper mesh, first paste the tail section and the middle section of the cabin. When pasting the tail section and the middle section, cut the copper mesh according to the measurement results, starting from the lower left corner of the tail of the cabin, and gradually lay it flat to the upper right to ensure that the copper mesh is flat and neat and fits the cabin. At the position of the cabin light, cut to avoid the two bases at the bottom of the lampshade, and keep covering in the middle for pasting. When pasting the front section of the cabin, extend the copper mesh by 5CM at the modeling line to facilitate the connection of the ground wire. After pasting, paste copper tape at the seams of the copper mesh to ensure that the copper mesh forms a continuous whole.

[0036] S4. Apply epoxy resin glue, mix the epoxy resin glue and curing agent evenly to form glue, use a scraper to evenly apply the glue on the copper mesh, including all copper tapes, to ensure that the glue level is even and avoid dripping and gathering.

[0037] The ratio of epoxy resin glue to curing agent is 1:1.5. When mixing, stir for 30-40 seconds to make the glue turn pure white.

[0038] The proportion of the curing agent is adjusted according to the temperature on site. When the temperature is low, the proportion of the curing agent is increased, and when the temperature is high, the proportion of the curing agent is reduced.

[0039] When applying the glue, the staff wear masks and ensure that the cabin vents are open and air is flowing in the cabin.

[0040] The scraper includes a handle 1, the surface of the handle 1 is provided with an anti-slip groove 2, one end of the handle 1 is fixedly connected with a threaded head 3, the surface of the threaded head 3 is threadedly sleeved with a threaded sleeve 10, one end of the threaded sleeve 10 is fixedly connected with a scraper 7, one side of the scraper 7 is respectively installed with an expansion plate 6 and a fixing member 9, the expansion plate 6 is movably connected with the scraper 7, a fixing bolt 8 is installed on the expansion plate 6, a plurality of mounting holes 11 are opened on the scraper 7, the fixing bolt 8 is threadedly connected with the mounting hole 11 to fix the expansion plate 6, and the upper and lower sides of the fixing member 9 They are all fixedly connected with a sliding rod 5, a sliding rod 5 is movably sleeved on the surface of the sliding rod 5, the sliding rod 5 is fixedly connected to the expansion plate 6, and an arc plate 12 is movably connected to the other side of the scraper 7, an adjusting groove 17 and a limit groove 16 are provided on the arc plate 12, a threaded rod 14 is movably connected inside the adjusting groove 17, a limit block 13 is movably connected inside the limit groove 16, the threaded rod 14 and the limit block 13 are fixedly connected to the scraper 7, a nut 15 is threadedly sleeved on the surface of the threaded rod 14, and the nut 15 is installed on the adjusting groove 17 to fix it.

[0041] By setting a scraper, glue can be applied to the copper mesh and the copper tape. In the process of applying glue, the user holds the handle 1, and the anti-skid groove 2 increases the friction on the surface of the handle 1 to prevent the user from slipping during holding. The threaded sleeve 10 and the threaded head 3 connect the handle 1 and the scraper 7. Through the coordinated use of the threaded sleeve 10 and the threaded head 3, the scraper 7 can be disassembled and cleaned. The glue is located at the left end of the scraper 7. The user applies the glue through the scraper 7. When a large area needs to be applied, the expansion plate 6 is pulled outward, and the expansion plate 6 drives the sliding sleeve 4 to slide on the surface of the sliding rod 5. The sliding sleeve 4 and the sliding rod 5 limit the expansion plate 6. After the adjustment is completed, the fixing bolt 8 is screwed into The expansion plate 6 is fixed in the corresponding mounting hole 11. The user uses the scraper 7 and the expansion plate 6 to efficiently apply glue to a large area. When it is necessary to apply glue to the curved surface inside the cabin, the curved plate 12 is pulled out, and the limit block 13 slides on the inner wall of the limit groove 16 to limit the curved plate 12. The threaded rod 14 slides on the inner wall of the adjustment groove 17. When the curved plate 12 is pulled out, the nut 15 is screwed on the surface of the threaded rod 14. The nut 15 presses the curved plate 12 against the surface of the scraper 7 to fix the curved plate 12. After the fixation is completed, the user applies glue to the curved surface inside the cabin through the curved part of the left end of the curved plate 12, thereby improving the flexibility of the gluing process.

[0042] S5. Connect the ground wire, reserve a grounding point inside the cabin, connect one end of the ground wire to the Faraday cage of the cabin, and install the other end of the ground wire on the copper mesh to ensure good grounding.

[0043] Before installing the ground wire, use cable pliers to cut the ground wire, use side cutting pliers to expose the copper core at both ends of the ground wire, and use wire crimping pliers to press the copper core and wire nose together. Use M8 bolts to connect the ground wire and copper mesh.

[0044] S6. Final inspection: check the installation of the copper mesh, then cut off the excess copper mesh, clean up the site, and ensure that the work area is tidy.

[0045] When inspecting the copper mesh, check whether all the copper mesh are fully covered, whether the connections are tight, whether the glue is loose, and ensure that there are no omissions or errors.

[0046] By fully covering the copper mesh inside and outside the nacelle cover and ensuring that it forms a continuous whole, it can effectively guide lightning current into the ground, reduce the impact of lightning on the electronic equipment inside the wind turbine, and improve the lightning protection capability of the entire system.

[0047] By using a specially designed scraper tool, not only can the epoxy resin glue be applied efficiently, but it can also adapt to surfaces of different shapes, such as flat and curved surfaces, thus ensuring good adhesion between the copper mesh and the cabin surface and improving the installation quality and efficiency.

[0048] During the cleaning and gluing process, ventilation of the operating environment and personal protection, such as wearing masks and opening vents, effectively protect the health and safety of operators.

[0049] By using M8 bolts to connect the ground wire to the copper mesh and conducting a comprehensive inspection of the copper mesh after installation, the reliability and stability of the lightning protection system are ensured, and it is also convenient for future inspection and maintenance of the system.

[0050] The copper mesh is fixed with materials such as double-sided tape and epoxy resin glue, which reduces environmental pollution and energy consumption compared to traditional welding methods.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for installing a lightning protection shielding net for a wind turbine nacelle cover, characterized in that: The following steps are involved: S1. Spray detergent on both sides and the upper side of the nacelle cover to ensure that the surface is clean and dust-free; S2. Paste double-sided tape on the inside of the cabin cover to prepare for the subsequent pasting of the copper mesh; S3, copper mesh pasting, that is, pasting the copper mesh from bottom to top from the tail of the nacelle to the impeller; S4. Apply epoxy resin glue, mix epoxy resin glue and curing agent evenly to form glue, use a scraper to evenly apply the glue on the copper mesh, including all copper tapes, to ensure that the glue level is even and avoid dripping and gathering; S5. Connect the ground wire, reserve a grounding point inside the cabin, connect one end of the ground wire to the Faraday cage of the cabin, and install the other end of the ground wire on the copper net to ensure good grounding; S6. Final inspection: check the installation of the copper mesh, then cut off the excess copper mesh, clean up the site, and ensure that the work area is tidy.

2. A method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: When spraying the detergent in S1, keep it for 2-5 minutes, and then use a rag to clean it. During the cleaning process, the interior of the cabin is ventilated and the staff wear masks for protection.

3. A method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: The positions where the double-sided tape is pasted inside the nacelle cover in S2 include the inner wall of the nacelle cover, the connection between the inner wall of the nacelle cover, the area around the lampshade, the ventilation holes and the radiator.

4. The method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: When the copper mesh is pasted in S3, the tail section and the middle section of the cabin are pasted first. When pasting the tail section and the middle section, the copper mesh is cut according to the measurement results, starting from the lower left corner of the tail of the cabin, and gradually laid flat to the upper right to ensure that the copper mesh is flat and neat and fits the cabin. At the position of the cabin light, the two bases at the bottom of the lampshade are cut to avoid the two bases at the bottom of the lampshade, and the middle is kept covered for pasting. When pasting the front section of the cabin, the copper mesh is extended by 5CM at the modeling line to facilitate the connection of the ground wire. After pasting, copper tape is pasted at the seams of the copper mesh to ensure that the copper mesh forms a continuous whole.

5. The method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: The ratio of epoxy resin glue to curing agent in S4 is 1:1.

5. When mixing, stir for 30-40 seconds to make the glue turn into pure white.

6. A method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 5, characterized in that: The proportion of the curing agent is adjusted according to the temperature on site. When the temperature is low, the proportion of the curing agent is increased, and when the temperature is high, the proportion of the curing agent is reduced.

7. A method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 6, characterized in that: When applying the glue, the staff wears a mask and ensures that the cabin vents are open and air is flowing in the cabin.

8. The method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: Before installing the ground wire in S5, use cable pliers to cut the ground wire, use side cutting pliers to expose the copper cores at both ends of the ground wire, and use wire crimping pliers to press the copper core and the wire nose together. The ground wire and the copper mesh are connected with M8 bolts.

9. The method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: When the copper mesh is inspected in S6, it is checked whether all the copper meshes are completely covered, whether the connections are tight, whether the glue applied is loose, and whether there are any omissions or errors.

10. The method for installing a lightning protection shielding net for a wind turbine nacelle cover according to claim 1, characterized in that: The scraper in S4 comprises a handle (1), the surface of the handle (1) is provided with an anti-slip groove (2), one end of the handle (1) is fixedly connected with a threaded head (3), the surface of the threaded head (3) is threadedly sleeved with a threaded sleeve (10), one end of the threaded sleeve (10) is fixedly connected with a scraper (7), one side of the scraper (7) is respectively provided with an expansion plate (6) and a fixing member (9), the expansion plate (6) is movably connected to the scraper (7), a fixing bolt (8) is installed on the expansion plate (6), a plurality of mounting holes (11) are provided on the scraper (7), the fixing bolt (8) is threadedly connected with the mounting hole (11) to fix the expansion plate (6), and the fixing member (9) The upper and lower sides are fixedly connected with a slide bar (5), the surface of the slide bar (5) is movably sleeved with the slide bar (5), the slide bar (5) is fixedly connected to the expansion plate (6), the other side of the scraper (7) is movably connected with an arc plate (12), the arc plate (12) is provided with an adjustment groove (17) and a limit groove (16), the adjustment groove (17) is movably connected with a threaded rod (14), the limit groove (16) is movably connected with a limit block (13), the threaded rod (14) and the limit block (13) are fixedly connected with the scraper (7), the surface of the threaded rod (14) is threadably sleeved with a nut (15), the nut (15) is installed on the adjustment groove (17) to fix it.

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