Wind turbine nacelle ventilation screen assembly with self-cleaning function

Abstract

The utility model relates to the technical field of wind power generation, especially to wind turbine nacelle ventilation filter screen assembly with self-cleaning function, which comprises: filter screen body, independent fixed setting, mounting piece, install on filter screen body, the hollow shaft is rotatably installed in the shaft hole of mounting piece, the transmission mechanism is rotatably installed in the hollow shaft, assembly part, the positioning pin of assembly part is inserted and installed with the connecting hole of hollow shaft, assembly part and hollow shaft are locked through the connecting mechanism, the connecting mechanism is connected with transmission mechanism, driving bevel gear, coaxially install on connecting mechanism, connecting shaft, rotatably install in the through hole of assembly part, the coaxial installation of cleaning roller is installed on connecting shaft, and cleaning roller and filter screen body are slidably connected, driven bevel gear, coaxially install on connecting shaft, driven bevel gear and driving bevel gear are engaged connection, drive mechanism, install on mounting piece, and drive mechanism is connected with hollow shaft and transmission mechanism cooperation respectively, it is convenient for it to clean, and it is safe to work.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation, and in particular to a wind turbine nacelle ventilation filter assembly with self-cleaning function. Background Technology

[0002] With the rapid development of wind power technology and the continuous improvement of turbine power ratings, wind turbines operate in complex and ever-changing natural environments for extended periods, making the reliability and maintenance efficiency of their key components increasingly important. Among these, the wind turbine nacelle, as the space housing core equipment such as the gearbox, generator, and control system, places higher demands on its ventilation and heat dissipation system. The ventilation filter, as a crucial component ensuring airflow and cleanliness within the nacelle, directly affects the equipment's operating temperature, service life, and overall stability.

[0003] Currently, most wind turbines use fixed ventilation filter structures to intercept dust, sand, salt spray, and other impurities from the air entering the nacelle, protecting internal electrical components and mechanical transmission systems. However, during long-term operation, a large amount of dust easily accumulates on the filter surface, increasing ventilation resistance, reducing heat exchange efficiency, and in severe cases, even causing equipment overheating failures. Traditional filters typically rely on manual cleaning or replacement periodically, which not only increases maintenance costs but also presents challenges in complex environments such as high altitudes and outdoor settings, posing significant safety risks. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, the present invention provides a wind turbine nacelle ventilation filter assembly with self-cleaning function.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The wind turbine nacelle ventilation filter assembly with self-cleaning function of this utility model includes:

[0007] The filter body is independently and fixedly installed;

[0008] The mounting component is installed on the filter screen body. A hollow shaft is rotatably installed in the shaft hole of the mounting component, and a transmission mechanism is rotatably installed in the hollow shaft.

[0009] The assembly is equipped with a locating pin. The locating pin of the assembly is inserted and removed from the connecting hole of the hollow shaft. The assembly and the hollow shaft are locked together by a connecting mechanism. The assembly rotates synchronously with the hollow shaft. The connecting mechanism is connected to the transmission mechanism and rotates synchronously with the transmission mechanism.

[0010] The driving bevel gear is coaxially mounted on the connecting mechanism;

[0011] A connecting shaft is rotatably installed in the through hole of the assembly. A cleaning roller is coaxially mounted on the connecting shaft, and the cleaning roller is slidably connected to the filter screen body.

[0012] The driven bevel gear is coaxially mounted on the connecting shaft, and the driven bevel gear and the driving bevel gear are meshed together.

[0013] The drive mechanism is mounted on the mounting piece. The drive mechanism is connected to the hollow shaft and the transmission mechanism respectively, and is used to drive the cleaning roller on the connecting shaft to rotate on its own axis and revolve around the sun.

[0014] Furthermore, the drive mechanism includes:

[0015] A servo motor is mounted on a mounting bracket. A transmission bevel gear is coaxially mounted on the output end of the servo motor, and the transmission bevel gear is connected to the transmission mechanism.

[0016] The first bevel gear is coaxially mounted on the hollow shaft and meshes with the transmission bevel gear.

[0017] Furthermore, the transmission mechanism includes:

[0018] The mounting shaft is rotatably mounted inside the shaft cavity of the hollow shaft.

[0019] The second bevel gear is coaxially mounted on the mounting shaft and meshes with the transmission bevel gear.

[0020] Furthermore, the second bevel gear is symmetrically located at both ends of the transmission bevel gear, just like the first bevel gear.

[0021] Furthermore, the mounting component is equipped with a protective box, and the transmission bevel gear, the first bevel gear, and the second bevel gear are all located inside the protective box.

[0022] Furthermore, the connecting mechanism includes:

[0023] The mounting post is rotatably installed in the inner hole of the assembly. One end of the mounting post is provided with a positioning post, which is plugged into the limiting hole of the mounting shaft.

[0024] Bolts pass through the through slots of the mounting post and engage with the threaded holes of the mounting shaft.

[0025] Furthermore, the assembly is provided with at least one connecting shaft, and when multiple connecting shafts are installed, the multiple connecting shafts are installed at equal angles.

[0026] Furthermore, the assembly part has a slot on its groove, and a sealing cap is installed at the slot.

[0027] In the above technical solution, the wind turbine nacelle ventilation filter assembly with self-cleaning function provided by this utility model has the following beneficial effects:

[0028] The filter body, as the core filtration structure, is fixed to the vent, effectively intercepting external impurities and ensuring clean ventilation in the nacelle. The drive mechanism drives the hollow shaft and transmission mechanism to move synchronously, causing the assembly to revolve with the hollow shaft, which in turn drives the cleaning roller to rotate around the filter body. At the same time, the connecting mechanism rotates with the transmission mechanism. Through the meshing of the active and driven bevel gears, the connecting shaft and the cleaning roller rotate, enabling the cleaning roller to cover the entire area of ​​the filter body during its revolution and enhance the wiping effect on the filter surface through its rotation, effectively removing attached dust and impurities. The assembly and the hollow shaft are locked by the insertion and removal of positioning pins and the connecting mechanism, facilitating disassembly and maintenance. The overall structure allows the cleaning roller to complete the all-round cleaning of the filter body without manual intervention under the dual action of rotation and revolution, avoiding filter clogging that affects ventilation efficiency, reducing the risk of equipment failure due to poor heat dissipation in the nacelle, extending the service life of the filter, reducing maintenance costs, and ensuring the long-term stable operation of the wind turbine nacelle ventilation system. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0030] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the axial side structure of this utility model;

[0032] Figure 3 This is a partially enlarged structural schematic diagram of the present invention;

[0033] Figure 4 This is an exploded view of the connection mechanism of this utility model;

[0034] The attached diagram is labeled as follows: 1. Filter body; 2. Mounting component; 3. Hollow shaft; 4. Transmission mechanism; 41. Mounting shaft; 42. Second bevel gear; 43. Protective box; 5. Assembly component; 6. Connecting mechanism; 61. Mounting column; 62. Positioning column; 63. Bolt; 7. Driving bevel gear; 8. Connecting shaft; 9. Driven bevel gear; 10. Drive mechanism; 101. Servo motor; 102. Transmission bevel gear; 103. First bevel gear. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0036] like Figures 1 to 4 As shown;

[0037] The wind turbine nacelle ventilation filter assembly with self-cleaning function according to this embodiment of the utility model includes:

[0038] The filter body 1 is the core filtration structure of the entire ventilation filter assembly, and is independently and fixedly installed at the ventilation opening of the wind turbine nacelle.

[0039] Mounting component 2 is installed on the filter body 1 and serves as a support and connection base for the components. A hollow shaft 3 is rotatably installed in the shaft hole of mounting component 2, and a transmission mechanism 4 is rotatably installed in the hollow shaft 3.

[0040] Assembly 5 is provided with a positioning pin. The positioning pin of assembly 5 is inserted and removed from the connecting hole of hollow shaft 3. Assembly 5 and hollow shaft 3 are locked by connecting mechanism 6. Assembly 5 rotates synchronously with hollow shaft 3. Connecting mechanism 6 is connected to transmission mechanism 4. Connecting mechanism 6 rotates synchronously with transmission mechanism 4.

[0041] The driving bevel gear 7 is coaxially mounted on the connecting mechanism 6;

[0042] The connecting shaft 8 is rotatably installed in the through hole of the assembly 5. A cleaning roller is coaxially mounted on the connecting shaft 8, and the cleaning roller is slidably connected to the filter screen body 1.

[0043] Driven bevel gear 9 is coaxially mounted on connecting shaft 8. Driven bevel gear 9 and driving bevel gear 7 mesh with each other to realize the rotation of the cleaning roller.

[0044] The drive mechanism 10 is mounted on the mounting part 2. The drive mechanism 10 is connected to the hollow shaft 3 and the transmission mechanism 4 respectively, and is used to drive the cleaning roller on the connecting shaft 8 to rotate on its own axis and revolve around the sun.

[0045] By adopting the above technical solution, the filter body 1, as the core filtration structure, is fixed to the ventilation opening, effectively intercepting external impurities and ensuring clean ventilation in the nacelle. The drive mechanism 10 drives the hollow shaft 3 and the transmission mechanism 4 to move synchronously, causing the assembly 5 to revolve with the hollow shaft 3, driving the cleaning roller to rotate around the filter body 1. At the same time, the connecting mechanism 6 rotates with the transmission mechanism 4. Through the meshing of the active bevel gear 7 and the driven bevel gear 9, the connecting shaft 8 and the cleaning roller rotate, so that while the cleaning roller covers the entire area of ​​the filter body 1 during its revolution, it enhances the wiping effect on the filter surface through its rotation, efficiently removing attached dust and impurities. The assembly 5 and the hollow shaft 3 are locked by the positioning pin insertion and removal and the connecting mechanism 6, which facilitates disassembly and maintenance. The overall structure allows the cleaning roller to complete the all-round cleaning of the filter body 1 without manual intervention under the dual action of rotation and revolution, avoiding filter clogging that affects ventilation efficiency, reducing the risk of equipment failure due to poor heat dissipation in the nacelle, extending the service life of the filter, reducing maintenance costs, and ensuring the long-term stable operation of the wind turbine nacelle ventilation system.

[0046] As a preferred embodiment of the above technical solution, such as Figures 2 to 4 As shown, the drive mechanism 10 includes:

[0047] A servo motor 101 is mounted on the mounting part 2. A transmission bevel gear 102 is coaxially mounted on the output end of the servo motor 101. The transmission bevel gear 102 is connected to the transmission mechanism 4.

[0048] The first bevel gear 103 is coaxially mounted on the hollow shaft 3, and the first bevel gear 103 meshes with the transmission bevel gear 102.

[0049] In this embodiment, the transmission bevel gear 102 at the output end of the servo motor 101 is simultaneously connected to the transmission mechanism 4 and meshes with the first bevel gear 103, synchronously transmitting the output of a single power source to the hollow shaft 3 and the transmission mechanism 4. This causes the hollow shaft 3 to drive the assembly 5 and the cleaning roller to revolve, while the transmission mechanism 4 drives the connecting mechanism 6 and the active bevel gear 7 to rotate. The driven bevel gear 9 drives the connecting shaft 8 and the cleaning roller to rotate, achieving precise linkage between rotation and revolution. The servo motor 101 can flexibly adjust its speed, direction, and cleaning frequency to adapt to different cleaning needs, ensuring that the cleaning force and coverage of the cleaning roller on the filter body 1 are controllable, improving cleaning efficiency, avoiding over-cleaning and damage to the filter, and ensuring that the filter body 1 maintains good ventilation and filtration performance for a long time.

[0050] As a preferred embodiment of the above technical solution, such as Figures 2 to 4 As shown, the transmission mechanism 4 includes:

[0051] Mounting shaft 41 is rotatably mounted inside the shaft cavity of hollow shaft 3;

[0052] The second bevel gear 42 is coaxially mounted on the mounting shaft 41, and the second bevel gear 42 meshes with the transmission bevel gear 102.

[0053] The second bevel gear 42 is symmetrically located at both ends of the transmission bevel gear 102, and is located at the same ends as the first bevel gear 103;

[0054] The mounting component 2 is equipped with a protective box 43, and the transmission bevel gear 102, the first bevel gear 103 and the second bevel gear 42 are all located inside the protective box 43.

[0055] In this embodiment, the mounting shaft 41 is rotatably mounted inside the cavity of the hollow shaft 3. The second bevel gear 42, which is coaxially mounted thereon, meshes with the transmission bevel gear 102 and is symmetrically distributed at both ends of the transmission bevel gear 102 along with the first bevel gear 103. This allows the power of the transmission bevel gear 102 to be evenly distributed to the hollow shaft 3 and the mounting shaft 41, ensuring the synchronization and stability of the cleaning roller's revolution and rotation, and preventing the cleaning action from being stuck due to power transmission imbalance. The protective box 43 encloses the transmission bevel gear 102, the first bevel gear 103, and the second bevel gear 42, which can effectively block external dust, moisture, and debris from entering the gear meshing area, preventing gear wear or jamming, extending the service life of the transmission components, and reducing the noise when the gears rotate.

[0056] As a preferred embodiment of the above technical solution, such as Figures 3 to 4 As shown, the connecting mechanism 6 includes:

[0057] Mounting post 61 is rotatably installed in the inner hole of assembly 5. One end of mounting post 61 is provided with positioning post 62, which is plugged into the limiting hole of mounting shaft 41.

[0058] Bolt 63 passes through the through groove of mounting post 61 and engages with the threaded hole of mounting shaft 41;

[0059] In this embodiment, the mounting post 61 is rotatably installed in the inner hole of the assembly 5. The positioning post 62 at one end of the mounting post 61 is engaged with the limiting hole of the mounting shaft 41 to ensure that the mounting post 61 and the mounting shaft 41 are precisely aligned and to avoid misalignment during power transmission. The bolt 63 passes through the through groove of the mounting post 61 and engages with the threaded hole of the mounting shaft 41 to lock the two tightly and prevent relative displacement between the mounting post 61 and the mounting shaft 41 during rotation. This ensures efficient power transmission from the mounting shaft 41 to the mounting post 61, thereby driving the active bevel gear 7 to rotate stably and ensuring the cleaning effect and ventilation performance of the filter body 1.

[0060] As a preferred embodiment of the above technical solution, such as Figures 1 to 3 As shown, at least one connecting shaft 8 is provided on the assembly 5, and when multiple connecting shafts 8 are installed, the multiple connecting shafts 8 are installed at equal angles;

[0061] In this embodiment, at least one connecting shaft 8 is provided on the assembly 5. The number of cleaning rollers can be flexibly configured according to the size of the filter body 1 and the cleaning requirements. A single connecting shaft 8 is suitable for efficient cleaning of small filters, while multiple connecting shafts 8 can improve the cleaning efficiency of large filters. The design of multiple connecting shafts 8 installed at equal angles allows each cleaning roller to form a uniformly distributed cleaning trajectory along the surface of the filter body 1 when it revolves under the drive of the assembly 5, avoiding cleaning dead corners and ensuring that all areas of the filter body 1 can be fully cleaned. At the same time, the equal angle distribution can balance the force when the assembly 5 rotates, reduce shaking or jamming caused by the shift of the center of gravity, ensure uniform contact pressure between the cleaning roller and the filter body 1, improve the stability of the cleaning effect, and further enhance the ability to remove impurities from the filter surface in conjunction with the rotation of the cleaning roller.

[0062] As a preferred embodiment of the above technical solution, such as Figure 1 As shown, the assembly 5 has a slot, and a sealing cap is installed at the slot.

[0063] In this embodiment, the sealing cover installed at the slot of the assembly 5 can enclose and protect the internal transmission components such as the driving bevel gear 7 and the driven bevel gear 9, effectively preventing external dust, moisture and debris from entering the gear meshing area, and facilitating the disassembly and assembly of the assembly and its structure.

[0064] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wind turbine nacelle ventilation filter assembly with self-cleaning function, characterized in that, include: The filter body (1) is independently and fixedly installed; Mounting component (2) is mounted on the filter body (1). A hollow shaft (3) is rotatably mounted in the shaft hole of the mounting component (2). A transmission mechanism (4) is rotatably mounted in the hollow shaft (3). Assembly (5) is provided with a positioning pin. The positioning pin of the assembly (5) is inserted and plugged into the connecting hole of the hollow shaft (3). The assembly (5) and the hollow shaft (3) are locked by a connecting mechanism (6). The assembly (5) rotates synchronously with the hollow shaft (3). The connecting mechanism (6) is connected to the transmission mechanism (4). The connecting mechanism (6) rotates synchronously with the transmission mechanism (4). The driving bevel gear (7) is coaxially mounted on the connecting mechanism (6); A connecting shaft (8) is rotatably installed in the through hole of the assembly (5). A cleaning roller is coaxially mounted on the connecting shaft (8), and the cleaning roller is slidably connected to the filter body (1). The driven bevel gear (9) is coaxially mounted on the connecting shaft (8), and the driven bevel gear (9) and the driving bevel gear (7) are meshed together. The drive mechanism (10) is installed on the mounting part (2). The drive mechanism (10) is connected to the hollow shaft (3) and the transmission mechanism (4) respectively, so as to drive the cleaning roller on the connecting shaft (8) to rotate on its own axis and revolve around the sun.

2. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 1, characterized in that, The drive mechanism (10) includes: A servo motor (101) is mounted on the mounting component (2). A transmission bevel gear (102) is coaxially mounted on the output end of the servo motor (101). The transmission bevel gear (102) is connected to the transmission mechanism (4). The first bevel gear (103) is coaxially mounted on the hollow shaft (3), and the first bevel gear (103) meshes with the transmission bevel gear (102).

3. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 2, characterized in that, The transmission mechanism (4) includes: The mounting shaft (41) is rotatably mounted inside the shaft cavity of the hollow shaft (3); The second bevel gear (42) is coaxially mounted on the mounting shaft (41), and the second bevel gear (42) meshes with the transmission bevel gear (102).

4. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 3, characterized in that, The second bevel gear (42) is symmetrically located at both ends of the transmission bevel gear (102) to the first bevel gear (103).

5. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 3, characterized in that, The mounting component (2) is provided with a protective box (43), and the transmission bevel gear (102), the first bevel gear (103) and the second bevel gear (42) are all located inside the protective box (43).

6. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 3, characterized in that, The connecting mechanism (6) includes: The mounting post (61) is rotatably installed in the inner hole of the assembly (5). One end of the mounting post (61) is provided with a positioning post (62), and the positioning post (62) is plugged into the limiting hole of the mounting shaft (41). Bolt (63) passes through the through groove of the mounting post (61) and engages with the threaded hole of the mounting shaft (41).

7. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 1, characterized in that, At least one connecting shaft (8) is provided on the assembly (5), and when multiple connecting shafts (8) are installed, the multiple connecting shafts (8) are installed at equal angles.

8. The wind turbine nacelle ventilation filter assembly with self-cleaning function as described in claim 1, characterized in that, The assembly (5) has a slot on its groove, and a sealing cap is installed at the slot.

Images