Wind turbine generator tower footing dust removal and ventilation device and method

Abstract

The invention discloses a wind turbine generator tower footing dust removal and ventilation device and method. The device comprises a tower body, a ring base, a rotating unit, an air inlet unit and power distribution equipment. The ring seat is hollow, the inner wall of the ring seat fixedly sleeves the outer wall of the tower body, the rotating unit is arranged at one end of the tower body, the air inlet unit is fixedly mounted at the lower end of the rotating unit, the power distribution equipment is arranged at one end, close to the rotating unit, of the tower body, and after a wind direction detector on the tower body detects the external direction, a power source is controlled through a controller of the power distribution equipment. The power source enables the connecting piece and the limiting ring to be meshed and rotate through the rotating shaft, the limiting ring is fixedly connected with the movable ring, and the movable ring is fixedly connected with the fixed rod, so that the automatic air inlet assembly is aligned with the air direction opening, and external air conveniently enters the air inlet through an air inlet base and an air supply pipe in the automatic air inlet assembly; the technical problem that in the prior art, due to the fact that the window orientation of an automatic air inlet window is fixed, heat dissipation cannot be conducted on the tower body through external air is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine generator sets, and relates to a wind turbine generator set tower base dust removal and ventilation device and method. Background Art

[0002] As a representative technology in the field of renewable energy power generation, wind turbines will experience a decrease in the efficiency of the power distribution equipment in the wind turbine tower and an increase in heat generation after 3-5 years of operation. The air in the wind turbine tower cannot circulate effectively, causing a sudden rise in temperature in the wind turbine tower, which can easily lead to accidents affecting the normal operation of the wind turbine.

[0003] The Chinese patent application No. 201621398664.9 discloses a wind turbine tower base dust removal and ventilation device, comprising: a columnar tower body, a tower door arranged on the windward side of the tower body, an active air inlet window and an automatic air inlet window arranged on the tower door, a cooling air duct connected to a power distribution device is also arranged in the tower body, and the active air inlet window and the automatic air inlet window are both connected to the cooling air duct; wherein, an induced draft fan is arranged in a pipeline connecting the active air inlet window and the cooling air duct, which can actively introduce outside air into the fan tower, and the automatic air inlet window directly It is connected to the power distribution equipment to be cooled in the fan tower through a pipeline. The automatic air inlet window is opposite to the other branch pipe. An overflow window is installed on the branch pipe. When the wind entering from the automatic air inlet window is too strong, the overflow window opens, and a part of the wind is directly discharged from the branch pipe to the outside of the tower, thereby avoiding excessive natural wind from damaging the power distribution equipment. A wind speed measuring device is arranged behind the automatic air inlet window. The wind speed measuring device is electrically connected to the induced draft fan. When the air volume provided by the automatic air inlet window is not enough to take away the heat in time, the induced draft fan is automatically controlled to start working to ensure sufficient air supply.

[0004] However, the device has the following disadvantages: the automatic air inlet window is set on one side of the tower body, but in actual use, since the wind direction of the outside world is different at every moment, but the window direction of the automatic air inlet window is fixed, when the wind direction cannot be aligned with the window of the automatic air inlet window, the outside wind cannot be used to dissipate heat for the tower body. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a dust removal and ventilation device and method for the base of a wind turbine tower, so as to solve the technical problem that the window direction of the automatic air inlet window in the prior art is fixed, and if the wind direction cannot be aligned with the window of the automatic air inlet window, the outside wind cannot be used to dissipate heat from the tower body.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides a wind turbine tower base dust removal and ventilation device, comprising a tower body, a ring seat, a rotating unit, an air intake unit, and a power distribution device; the ring seat is hollow inside, the inner wall of the ring seat is fixedly sleeved on the outer wall of the tower body, the rotating unit is arranged at one end of the ring seat, the air intake unit is fixedly installed at the lower end of the rotating unit and is fixedly connected to the tower body, and the power distribution device is arranged at one end of the tower body close to the rotating unit.

[0007] Furthermore, a first groove is provided at one end of the ring seat close to the rotating unit; the rotating unit includes a movable ring and a limiting ring; the limiting ring is arranged in the first groove for being movably connected with the ring seat, the movable ring is arranged on the side of the limiting ring away from the first groove, and the movable ring is fixedly connected to the limiting ring.

[0008] Furthermore, the rotating unit also includes a power source and a connecting piece; the power source is fixedly installed on one side of the ring seat, the connecting piece is arranged on the upper end of the limiting ring, and the power source transmits the rotational torque to the connecting piece through the rotating shaft.

[0009] Furthermore, an annular tooth opening is provided at one end of the limiting ring away from the movable ring, and the annular tooth opening is meshed with the connecting piece.

[0010] Furthermore, the air inlet unit includes an air supply pipe, an air inlet and an automatic air inlet component; The air inlet is arranged on one side of the lower end of the tower body and is fixedly connected to the tower body. One end of the air supply pipe is fixedly connected to the air inlet, and the other end is fixedly connected to the automatic air inlet component. The automatic air inlet component is arranged at the lower end of the rotating unit, and the automatic air inlet component is fixedly connected to the rotating unit.

[0011] Furthermore, the automatic air inlet assembly includes a dust cover, an air inlet seat, and a fixing rod; One end of the fixing rod is fixedly connected to the rotating unit, and the other end is fixedly connected to the air inlet seat. The fixing rod is arranged at the lower end of the rotating unit, and the air inlet seat is arranged on the side of the fixing rod away from the rotating unit. The dust cover is arranged at one end of the air inlet seat, and the dust cover is detachably connected to the air inlet seat, and a dust net is arranged inside the dust cover.

[0012] Furthermore, a first through hole is provided at one end of the air inlet seat away from the dust cover, one end of the air supply pipe is fixedly connected to the first through hole, and the other end of the air supply pipe is fixedly connected to the air inlet.

[0013] Furthermore, the air supply pipe is a corrugated hose.

[0014] The present invention also provides a wind turbine tower base dust removal and ventilation method, based on the above-mentioned wind turbine tower base dust removal and ventilation device, comprising the following steps: Connect the tower body, ring base, rotating unit, air inlet unit and power distribution equipment in sequence; After the wind direction detector on the tower detects the external wind direction, the controller connected to the rotating unit controls the rotating unit to rotate, and the air inlet unit and the rotating unit keep rotating in the same direction, exchanging the external wind with the heat in the tower through the air inlet unit.

[0015] Furthermore, the controller connected to the rotating unit controls the rotating unit to rotate, including: when the rotating unit has the same wind direction as the external wind direction, the controller controls the rotating unit to rotate half a circle in the same direction as the external wind direction, and then rotates in the opposite direction after half a circle.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a wind turbine tower base dust removal and ventilation device, comprising a tower body, a ring seat, a rotating unit, an air inlet unit, and a power distribution device; the ring seat is hollow inside, the inner wall of the ring seat is fixedly sleeved on the outer wall of the tower body, the rotating unit is arranged at one end of the tower body, the air inlet unit is fixedly installed at the lower end of the rotating unit, and is fixedly connected to the tower body, the power distribution device is arranged at one end of the tower body close to the rotating unit, after the wind direction detector on the tower body detects the external direction, the power source is controlled by the controller in the power distribution device, the power source makes the connecting member and the limit ring mesh with each other and rotate through the rotating shaft, because the limit ring is fixedly connected to the movable ring, and the movable ring is fixedly connected to the fixed rod, so that the automatic air inlet assembly is aligned with the wind direction port, so that the external wind enters the air inlet port through the air inlet seat and the air supply pipe in the automatic air inlet assembly, and exchanges heat with the tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a wind turbine tower base dust removal and ventilation device according to the present invention; Figure 2 It is a schematic diagram of the structure of the rotating unit in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the annular tooth opening in an embodiment of the present invention; Figure 4 It is an exploded view of the automatic air inlet assembly in an embodiment of the present invention.

[0018] Reference numerals: 1-tower body; 2-ring seat; 3-rotating unit; 31-movable ring; 32-limiting ring; 321-annular tooth mouth; 33-power source; 34-connecting piece; 4-air inlet unit; 41-air supply pipe; 42-air inlet; 43-dust cover; 44-air inlet seat; 45-fixing rod; 46-dust net; 47-first through hole; 5-power distribution equipment. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 creative work should fall within the scope of protection of the present invention.

[0020] The present invention discloses a wind turbine tower base dust removal and ventilation device, comprising a tower body 1, a ring seat 2, a rotating unit 3, an air intake unit 4, and a power distribution device 5; the ring seat 2 is hollow inside, the inner wall of the ring seat 2 is fixedly sleeved on the outer wall of the tower body 1, the rotating unit 3 is arranged at one end of the ring seat 2, the air intake unit 4 is fixedly installed at the lower end of the rotating unit 3 and is fixedly connected to the tower body 1, and the power distribution device 5 is arranged at one end of the tower body 1 close to the rotating unit 3.

[0021] Specifically, Figure 1 As shown, the ring seat 2 is in the shape of a ring, and the inner wall of the ring seat 2 is sleeved on the outer wall of the tower body 1 for fixed connection, which effectively prevents the relative movement between the ring seat 2 and the tower body 1, thereby improving the stability and reliability of the entire device. It should be noted that the distance between the ring seat 2 and the bottom end of the tower body 1 can be adjusted according to actual needs when assembling. Fixed connection also includes threaded connection, key connection, pin connection, interference connection, welding and riveting. Threaded connection realizes the connection of two or more parts by screwing together. This connection method has the advantages of simple structure, easy manufacturing and assembly, and easy disassembly and adjustment. Key connection is to connect two parts together through a key to achieve the function of axial fixation and torque transmission. Key connection is divided into four types: flat key connection, semicircular key connection, wedge key connection and tangential key connection. It has the advantages of simple structure, reliable operation, and convenient assembly and disassembly. Pin connection is to connect two parts together through a pin to achieve the function of fixing or positioning. Pin connection has the advantages of simple structure, easy manufacturing and assembly. Interference connection is achieved by the interference fit between two parts. This connection method has the advantages of simple structure, high load-bearing capacity, and not easy to loosen. Welding is to melt two parts by heating and connect them together to achieve the function of fixed connection. Welding has the advantages of high connection strength and good sealing. Riveting is to connect two parts together by rivets to achieve the function of fixed connection. Riveting has the advantages of reliable connection and high load-bearing capacity.

[0022] The connecting unit 3 is arranged at one end of the ring seat 2 close to the equipped device 5, and the air inlet unit 4 is arranged at one end of the ring seat 2 close to the connecting unit 3. The air inlet unit 4 and the connecting unit 3 are both fixedly connected to the ring seat 2, and the connecting unit 3 provides power for the air inlet unit 4, forcing the air inlet unit 4 to rotate.

[0023] The rotating unit 3 includes a movable ring 31 and a limiting ring 32; the limiting ring 32 is arranged in the first groove and is used to be movably connected with the ring seat 2, the movable ring 31 is arranged on the side of the limiting ring 32 away from the first groove, and the movable ring 31 is fixedly connected to the limiting ring 32. It also includes a power source 33 and a connecting member 34; the power source 33 is fixedly installed on one side of the ring seat 2, the connecting member 34 is arranged on the upper end of the limiting ring 32, and the power source 33 transmits the rotation torque to the connecting member 34 through the rotating shaft.

[0024] Specifically, Figure 2 As shown, the rotating unit 3 includes a movable ring 31, a limiting ring 32, a power source 33 and a connecting piece 34. A first groove is provided at one end of the ring seat 2 close to the rotating unit 3. The cross section of the limiting ring 32 is a cross. The shape of the first groove is adapted to the limiting ring 32. The limiting ring 32 is installed in the first groove. The movable ring 31 is welded to the limiting ring 32. In addition, the movable ring 31 and the limiting ring 32 can be integrated. The inner diameter of the movable ring 31 is larger than the inner diameter of the ring seat 2, and the outer diameter of the movable ring 31 is the same as the outer diameter of the ring seat 2. Figure 2 As an example, the power source 33 and the connecting member 34 are installed on the right side of the ring seat 2. In this embodiment, the power source 33 is a servo motor, the connecting member 34 is a gear, and the connecting member 34 is connected to the power source 33 through a rotating shaft. Figure 3 As shown, the upper end of the limiting ring 32 is provided with an annular tooth opening 321. When the power source 33 is working, the power 33 transmits the force to the connecting member 34 through the rotating shaft. Since the connecting member 34 and the annular tooth opening 321 on the limiting ring 32 are meshed with each other, the ring seat 2, the movable ring 31 and the limiting ring 32 are driven to rotate. The direction of rotation can be controlled by a controller connected to the power distribution equipment 5.

[0025] The air inlet unit 4 includes an air supply pipe 41, an air inlet 42 and an automatic air inlet assembly; the air inlet 42 is arranged at one side of the lower end of the tower body 1 and is fixedly connected to the tower body 1; one end of the air supply pipe 41 is fixedly connected to the air inlet 42, and the other end is fixedly connected to the automatic air inlet assembly; the automatic air inlet assembly is arranged at the lower end of the rotating unit 3, and the automatic air inlet assembly is fixedly connected to the rotating unit 3. The automatic air inlet assembly includes a dust cover 43, an air inlet seat 44, and a fixing rod 45; one end of the fixing rod 45 is fixedly connected to the rotating unit 3, and the other end is fixedly connected to the air inlet seat 44; the fixing rod 45 is arranged at the lower end of the rotating unit 3, and the air inlet seat 44 is arranged at the side of the fixing rod 45 away from the rotating unit 3; the dust cover 43 is arranged at one end of the air inlet seat 44, and the dust cover 43 is detachably connected to the air inlet seat 44; a dust net 46 is arranged inside the dust cover 43.

[0026] Specifically, Figure 1 He Ru Figure 4As shown, the air inlet unit 4 includes an air inlet 42, an air supply pipe 41, and an automatic air inlet assembly. The automatic air inlet assembly includes a dust cover 43, an air inlet seat 44, and a fixed rod 45. The fixed rod 45 is fixedly installed at the lower end of the ring seat 2 and is located between the inner diameter of the ring seat 2 and the inner diameter of the movable ring 31. When the ring seat 2 rotates, the fixed rod 45 can rotate in the same direction with the ring seat 2. One end of the fixed rod 45 is fixedly connected to the ring seat 2, and the fixed connection here is a detachable connection. The other end is fixedly connected to the air inlet seat 44, and the fixed connection here is welding. The rear end of the air inlet seat 44 is provided with a first through hole, and the first through hole is used to connect with the air supply pipe 41. The dust cover 43 is provided at the front end of the air inlet seat 44. The dust cover 43 is threadedly connected to the air inlet seat 44. A grid-shaped dust net 46 is provided inside the dust cover 43. The dust net 46 prevents dust, gravel, cement and other particles generated from the outside from entering the tower body 1. The air supply pipe 41 is a corrugated hose, one end of which is connected to the first through hole of the air inlet seat 44, and the other end is connected to the air inlet 42. The corrugated hose has good elasticity and scalability, and can adapt to various complex environments and space layouts; it has corrosion resistance, can maintain stability in harsh environments, and prolongs its service life; it has high compressive strength, can withstand greater pressure and tension, and avoid damage; it has flame retardancy, and if specially treated, it can meet the flame retardancy standard, effectively resist fire and delay the spread of fire.

[0027] Example 2 The present invention also provides a method for dust removal and ventilation of a wind turbine tower base, which is based on a dust removal and ventilation device for a wind turbine, and includes the following steps: connecting a tower body 1, a ring seat 2, a rotating unit 3, an air intake unit 4, and a power distribution device 5 in sequence; after a wind direction detector on the tower body 1 detects the external wind direction, a controller connected to the power distribution device 5 controls the rotating unit 3 to rotate, and the air intake unit 4 keeps rotating in the same direction as the rotating unit 3, so that the external wind is exchanged with the heat in the tower body 1 through the air intake unit 4.

[0028] Specifically, a wind direction detector is provided on the tower body 1, the inner ring of the ring seat 2 is sleeved on the outer ring of the tower body 1, the movable ring 31 is installed at the lower end of the ring seat 2, a first groove is provided in the ring seat 2, the limit ring 32 is installed in the first groove, the power source 33 and the connecting member 34 are arranged on one side of the ring seat 2, and the connecting member 34 and the annular toothed opening 321 on the limit ring 32 are meshed with each other, so that the power source 33 provides power to the connecting member 34, forcing the movable ring 31 and the limit ring 32 to move. 32 and the ring seat 2 are rotated so that the fixing rod 45 is installed at the lower end of the ring seat 2 and is located between the inner circle of the ring seat 2 and the inner circle of the movable ring 31, one side of the air inlet seat 44 is fixedly connected to the fixing rod 45, the dust cover 43 is threadedly connected to the air inlet seat 44, one end of the air supply pipe 41 is connected to the first through hole on the air inlet seat 44, and the other end is connected to the air inlet 42, the air inlet 42 is located on the side wall of the tower body 1 close to one end of the power distribution equipment 5, and the air inlet 42 and the tower body 1 are connected to each other.

[0029] When in use, after the wind direction detector on the tower body 1 detects the direction of the outside world, the controller in the power distribution equipment 5 controls the power source 33 to drive the connecting member 34 to rotate. When the connecting member 34 rotates, the connecting member 34 and the annular tooth opening 321 are meshed with each other, and then the annular tooth opening 321 rotates with the limit ring 32, and the limit ring 32 rotates with the ring seat 2 when rotating, and the ring seat 2 moves with the automatic air inlet assembly when rotating, so that the automatic air inlet assembly is aligned with the wind direction port, so that the outside wind can enter the air inlet 42 through the air inlet seat 44 of the automatic air inlet assembly and the air supply pipe 41, thereby transferring the heat of the tower body 1 to the outside world. It should be noted that after the wind direction detector on the tower body 1 detects the direction of the outside wind, the controller in the power distribution equipment 5 controls the connecting member 34 to rotate only half a circle in the same direction as the outside wind, and rotates in the opposite direction after rotating half a circle.

[0030] It can reduce the wear of the connector 34 and extend its life; improve stability and reliability; optimize performance and improve efficiency. Reduce the wear of the connector 34 and extend its life: By alternating the rotation direction, the various parts of the connector 34 can evenly bear the wear, avoiding local excessive wear caused by long-term unidirectional rotation. Alternating rotation helps to disperse the wear, thereby extending the overall service life of the connector 34 and reducing the replacement frequency and maintenance costs. Improve stability and reliability: Reverse rotation after half a circle helps to reduce the vibration and shaking caused by continuous unidirectional rotation and improve the overall stability of the equipment. Alternating the rotation direction can prevent the connector 34 from loosening or falling off due to long-term unidirectional force, thereby improving the reliability of the connection. Optimize performance and improve efficiency: Under certain working conditions, such as environments with large wind or temperature changes, alternating the rotation direction helps the connector 34 better adapt to external conditions and maintain stable performance. During the assembly process, by alternating the rotation direction, the position and angle of the connector 34 can be more easily adjusted, thereby improving assembly efficiency. The design of the connecting member 34 rotating in the opposite direction after rotating half a circle has the advantages of reducing wear, improving stability and reliability, optimizing performance and improving efficiency, reducing energy consumption and environmental protection, and enhancing safety. These advantages help to improve the overall performance and service life of the equipment, reduce maintenance costs and energy consumption, and improve safety and environmental protection.

[0031] In summary, the present invention provides a wind turbine tower base dust removal and ventilation device and method, the device includes a tower body, a ring seat, a rotating unit, an air inlet unit, and a power distribution device; the ring seat is hollow, the inner wall of the ring seat is fixedly sleeved on the outer wall of the tower body, the rotating unit is arranged at one end of the tower body, the air inlet unit is fixedly installed at the lower end of the rotating unit, and the power distribution device is arranged at one end of the tower body close to the rotating unit. After the wind direction detector on the tower body detects the external direction, the power source is controlled by the controller of the power distribution device. The power source makes the connecting member and the limit ring mesh with each other and rotate through the rotating shaft. Because the limit ring is fixedly connected to the movable ring, and the movable ring is fixedly connected to the fixed rod, the automatic air inlet assembly is aligned with the wind direction port, so that the outside wind enters the air inlet through the air inlet seat and the air supply pipe in the automatic air inlet assembly, and exchanges heat with the tower body, thereby solving the technical problem that the window direction of the automatic air inlet window in the prior art is fixed and the outside wind cannot be used to dissipate heat from the tower body.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. A wind turbine tower base dust removal and ventilation device, characterized in that: It comprises a tower body (1), a ring seat (2), a rotating unit (3), an air inlet unit (4), and a power distribution device (5); The ring seat (2) is hollow inside, the inner wall of the ring seat (2) is fixedly sleeved on the outer wall of the tower body (1), the rotating unit (3) is arranged at one end of the ring seat (2), the air inlet unit (4) is fixedly installed at the lower end of the rotating unit (3) and is fixedly connected to the tower body (1), and the power distribution equipment (5) is arranged at one end of the tower body (1) close to the rotating unit (3).

2. The wind turbine tower base dust removal and ventilation device according to claim 1 is characterized in that: The ring seat (2) is provided with a first groove at one end close to the rotating unit (3); The rotating unit (3) comprises a movable ring (31) and a limiting ring (32); The limiting ring (32) is arranged in the first groove and is used for being movably connected to the ring seat (2); the movable ring (31) is arranged on a side of the limiting ring (32) away from the first groove; the movable ring (31) is fixedly connected to the limiting ring (32).

3. The wind turbine tower base dust removal and ventilation device according to claim 2 is characterized in that: The rotating unit (3) further comprises a power source (33) and a connecting member (34); The power source (33) is fixedly mounted on one side of the ring seat (2), the connecting member (34) is arranged on the upper end of the limiting ring (32), and the power source (33) transmits the rotational torque to the connecting member (34) via the rotating shaft.

4. The wind turbine tower base dust removal and ventilation device according to claim 3 is characterized in that: An annular tooth opening (321) is provided at one end of the limiting ring (32) away from the movable ring (31), and the annular tooth opening (321) is meshed with the connecting piece (34).

5. The wind turbine tower base dust removal and ventilation device according to claim 1, characterized in that: The air inlet unit (4) comprises an air supply pipe (41), an air inlet (42) and an automatic air inlet component; The air inlet (42) is arranged at one side of the lower end of the tower body (1) and is fixedly connected to the tower body (1); one end of the air supply pipe (41) is fixedly connected to the air inlet (42) and the other end is fixedly connected to an automatic air inlet component; the automatic air inlet component is arranged at the lower end of the rotating unit (3); and the automatic air inlet component is fixedly connected to the rotating unit (3).

6. The wind turbine tower base dust removal and ventilation device according to claim 5 is characterized in that: The automatic air inlet assembly comprises a dust cover (43), an air inlet seat (44), and a fixing rod (45); One end of the fixing rod (45) is fixedly connected to the rotating unit (3), and the other end is fixedly connected to the air inlet seat (44); the fixing rod (45) is arranged at the lower end of the rotating unit (3); the air inlet seat (44) is arranged on a side of the fixing rod (45) away from the rotating unit (3); the dust cover (43) is arranged at one end of the air inlet seat (44); the dust cover (43) is detachably connected to the air inlet seat (44); and a dust net (46) is arranged inside the dust cover (43).

7. The wind turbine tower base dust removal and ventilation device according to claim 6 is characterized in that: A first through hole (47) is provided at one end of the air inlet seat (44) away from the dust cover (43); one end of the air supply pipe (41) is fixedly connected to the first through hole (47) and the other end is fixedly connected to the air inlet (42).

8. The wind turbine tower base dust removal and ventilation device according to claim 5, characterized in that: The air supply pipe (41) is a corrugated hose.

9. A method for dust removal and ventilation of a wind turbine tower base, characterized in that: The wind turbine tower base dust removal and ventilation device according to any one of claims 1 to 8 comprises the following steps: Connecting the tower body (1), the ring base (2), the rotating unit (3), the air inlet unit (4), and the power distribution equipment (5) in sequence; After the wind direction detector on the tower body (1) detects the external wind direction, the controller connected to the power distribution device (5) controls the rotation of the rotating unit (3), and the air inlet unit (4) and the rotating unit (3) rotate in the same direction, so that the external wind exchanges heat with the tower body (1) through the air inlet unit (4).

10. The wind turbine tower base dust removal and ventilation method according to claim 9, characterized in that: The controller connected to the rotating unit (3) controls the rotating unit (3) to rotate, comprising: when the rotating unit (3) has the same wind direction as the external wind, the controller controls the rotating unit (3) to rotate half a circle in the same direction as the external wind direction, and then rotates in the opposite direction after half a circle.

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