Protective dust removal device for wind tower power station

Abstract

The invention relates to the technical field of wind power generation, in particular to a wind tower power station protection and dust removal device which comprises heat dissipation air channels arranged on the two sides of a wind tower cabin and dustproof filter screens installed in the heat dissipation air channels, brush rollers and abutting plates are arranged in the heat dissipation air channels and located on the two sides of the dustproof filter screens respectively, and the dustproof filter screens are arranged on the two sides of the brush rollers. And the brush roller is located on the windward side of the dustproof filter screen, the abutting and pushing plate is located on the leeward side of the dustproof filter screen, and air spraying holes are formed in the side, facing the dustproof filter screen, of the abutting and pushing plate. Precise adaptation of a dust-proof filter screen cleaning mode in a normal wind power environment and a paroxysmal strong wind environment is achieved, mechanical cleaning and gas jet cleaning of the filter screen can be synchronously completed in paroxysmal strong wind by means of cooperative action of a brush roller and a pushing plate, the thoroughness of sand dust cleaning is greatly improved, and the cleaning efficiency is improved. And the defect that a single cleaning mode is difficult to deal with strong windy and sandy weather is avoided.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a dust removal and protection device for wind turbine power stations. Background Technology

[0002] A wind turbine power station is a clean energy infrastructure based on the principles of wind energy capture and electromechanical energy conversion. It uses a tower structure to support a wind turbine system that captures atmospheric kinetic energy, driving a generator to convert wind energy into electricity. This system possesses three core advantages: environmental friendliness, resource renewability, and geographical adaptability. As a key component of the modern energy system, it is currently evolving towards enhanced structural reliability, optimized operational efficiency, and refined intelligent control, providing fundamental support for global energy structure adjustment and low-carbon development strategies. Its technological implementation relies on the synergy of multiple systems: the tower provides the main support and vibration suppression; the wind turbine blades drive the main shaft to rotate under aerodynamic torque; the speed-increasing gearbox increases the rotational speed and couples the generator rotor; the electromechanical conversion unit converts mechanical kinetic energy into three-phase AC electrical energy; and the power processing stage involves rectification and inversion by a converter and voltage boosting by a transformer before feeding the power grid.

[0003] To ensure the heat dissipation of core heat-generating components such as generators, gearboxes, and converters within the nacelle, existing wind turbine generators typically have air inlets on the side walls of the nacelle and are equipped with filters to intercept wind and sand intrusion. However, this static protection mechanism has inherent defects: the filters cannot dynamically respond to sudden changes in the wind and sand environment. When encountering a sudden strong wind that causes a sharp increase in the concentration of dust in the environment, the sand particles on the filter surface are quickly compacted due to the compression of high-speed airflow and electrostatic adsorption, forming a dense dust shell structure. This results in a sharp reduction in the effective cross-sectional area of ​​the air inlet channel, further exacerbating the heat accumulation effect inside the nacelle, causing the temperature to rise, and thus triggering the generator overheat protection system to shut down. At the same time, under continuous wind pressure, some ultrafine dust penetrates the filter pores and deposits on the electrical cabinet terminals and insulating sleeves. When the ambient humidity rises, it adsorbs water vapor to form an ion conductive path, which may induce local arc discharge and creepage phenomena, ultimately leading to insulation failure and short circuit faults. To address these issues, we propose a dust protection device for wind turbine power plants. Summary of the Invention

[0004] One of the technical problems this application aims to solve is that the static protection mechanism has inherent defects: the filter cannot dynamically respond to sudden changes in the wind and sand environment. When encountering a sudden strong wind that causes a sharp increase in the concentration of sand and dust in the environment, the sand particles on the filter surface are quickly condensed due to the compression of high-speed airflow and electrostatic adsorption, forming a dense dust shell structure. This results in a sharp reduction in the effective cross-sectional area of ​​the air intake channel, which further exacerbates the heat accumulation effect inside the engine compartment, causing the temperature to rise and thus triggering the generator overheat protection system to shut down.

[0005] To address the aforementioned technical problems, this application provides a dust removal device for a wind turbine power plant, comprising a heat dissipation duct on both sides of the wind turbine nacelle and a dust filter installed within the heat dissipation duct. A brush roller and a push plate are installed within the heat dissipation duct, located on opposite sides of the dust filter. The brush roller is positioned on the windward side of the dust filter, and the push plate is positioned on the leeward side. An air jet hole is opened on the push plate facing the dust filter. A wind pressure dust suppression unit connected to the brush roller and push plate is installed within the heat dissipation duct to control the rotation of the brush roller during gusty winds and simultaneously trigger the air jet hole on the push plate on the other side. An interception adjustment unit is installed within the heat dissipation duct to adjust the interception position of sand and dust in the airflow during gusty winds.

[0006] In some embodiments, the wind pressure dustproof unit includes a cleaning component disposed within a heat dissipation duct, which cleans the dust filter under normal wind conditions. A driving component is disposed on the heat dissipation duct to provide power for the cleaning component. A pulse cleaning component is disposed on the dust filter to clean the dust filter during gusty winds. A switching component is disposed on the dust filter to drive the pulse cleaning component to clean the dust filter during gusty winds.

[0007] In some embodiments, the cleaning component includes two reciprocating screws rotatably disposed within a heat dissipation duct. The two reciprocating screws are respectively located on both sides of a dust filter. A belt drive mechanism is provided on the two reciprocating screws. Sliding grooves are provided on both sides of the dust filter. A slider 1 and a slider 2 are slidably disposed in the sliding grooves. The reciprocating screws pass through slider 1 and slider 2 and are threadedly connected to slider 1 and slider 2. A rotating shaft is rotatably disposed on slider 1. One end of the rotating shaft passes through slider 1. The rotating shaft is connected to slider 1 through a damping shaft and is connected to a brush roller. Slider 2 is connected to a push plate.

[0008] In some embodiments, the driving component includes a wind speed rod rotatably mounted on a heat dissipation duct, a driving chamber is provided inside the heat dissipation duct, one end of a reciprocating lead screw extends into the driving chamber and is rotatably connected to the driving chamber, a driving shaft is rotatably mounted inside the driving chamber, the driving shaft is connected to the wind speed rod, a driving gear is provided on both the driving shaft and the reciprocating lead screw, and a driving toothed belt is sleeved on the driving gear.

[0009] In some embodiments, the pulse cleaning component includes switching chambers located on both sides of a dust filter. Two positioning plates are disposed within each switching chamber. A sliding rod 1 and a sliding rod 2 are respectively disposed on the two positioning plates. A linkage rack is disposed at one end of the sliding rod 1, and a pressure plate 1 is disposed at the other end. A corrugated plate is disposed at one end of the sliding rod 2, and a pressure plate 2 is disposed at the other end. A pressure spring 1 is sleeved on the sliding rod 1 between the positioning plate and the pressure plate 1, and a pressure spring 2 is sleeved on the sliding rod 2 between the positioning plate and the pressure plate 2. Wedge-shaped blocks are disposed on opposite sides of both the pressure plate 1 and the pressure plate 2. A rotating shaft is provided with... The device includes a linkage gear that works in conjunction with a linkage rack. A mounting chamber is located within the second slider. A pneumatic chamber is located within the mounting chamber. A piston plate is slidably mounted within the pneumatic chamber. A return spring is located within the pneumatic chamber, with one end connected to the piston plate. A pressing rod, which works in conjunction with a wave plate, is mounted on the piston plate. One end of the pressing rod passes through the pneumatic chamber and the mounting chamber, and is slidably connected to both. An elastic airbag is located within the mounting chamber. The pneumatic chamber is connected to the elastic airbag via a one-way exhaust valve and to the outside via a one-way intake valve. The elastic airbag is connected to an air jet hole on the push plate.

[0010] In some embodiments, the switching component includes a connecting shaft slidably disposed within the switching chamber. Multiple C-shaped push plates that cooperate with wedge blocks are disposed on the connecting shaft. One end of the connecting shaft passes through the drive chamber and is slidably connected to it. A synchronization plate is disposed at the end of the connecting shaft outside the drive chamber. A limit rod is disposed on the heat dissipation duct. The limit rod passes through the synchronization plate and is slidably connected to it. A limit plate is disposed at the top of the limit rod. A compression spring is sleeved on the limit rod between the limit plate and the synchronization plate. An installation ring is disposed on the wind speed rod. Multiple connecting rods are rotatably disposed on the installation ring. A pendulum ball is disposed on each connecting rod. A lifting ring is slidably disposed on the wind speed rod. A connecting rod rotatably connected to connecting rod 1 is rotatably disposed on the lifting ring. A lifting block is slidably disposed on the heat dissipation duct. A traction rope is disposed on the lifting block. One end of the traction rope is connected to the lifting ring. The traction rope is made of polyester fiber.

[0011] In some embodiments, the interception adjustment unit includes an interceptor disposed in a heat dissipation duct, which intercepts large particles of sand and gravel in the airflow. The interceptor is provided with an unfolding member, which adjusts the size of the interception mesh of the interceptor.

[0012] In some embodiments, the interceptor includes a filter plate one disposed in a heat dissipation duct, the filter plate one being located on the windward side of the dust filter, a filter plate two being slidably disposed in the heat dissipation duct, an electric push rod being disposed on the filter plate one, one end of the electric push rod being connected to the filter plate two, and a wind speed sensor being disposed on the wind speed rod.

[0013] In some embodiments, the unfolding member includes an unfolding groove formed in the filter plate II, a plurality of unfolding shafts are rotatably arranged in the unfolding groove, a belt drive mechanism II is arranged on the plurality of unfolding shafts, one end of the unfolding shaft passes through the unfolding groove, a plurality of bidirectional lead screws are arranged on the unfolding shaft, a first moving rod and a second moving rod are respectively arranged at both ends of the bidirectional lead screws, the first moving rod and the second moving rod are threadedly connected to the bidirectional lead screws, a moving gear is arranged at the end of the unfolding shaft located outside the unfolding groove, and a moving rack that meshes with the moving gear is arranged in the heat dissipation duct.

[0014] In some embodiments, the traction rope is made of nylon.

[0015] The present invention has at least the following beneficial effects:

[0016] By incorporating a wind pressure dust suppression unit, the dust filter cleaning method is precisely adapted to both normal wind conditions and gusty wind conditions. Utilizing the coordinated action of the brush rollers and push plates, mechanical cleaning and gas jet cleaning of the filter can be completed simultaneously during gusty winds, significantly improving the thoroughness of sand and dust removal and avoiding the drawbacks of a single cleaning method being insufficient to cope with strong winds and sandstorms. Simultaneously, the interception adjustment unit allows for flexible adjustment of the sand and dust interception position and mesh size according to gusty wind conditions, enabling targeted interception of sand and dust particles of different sizes. This reduces the impact damage of large sand and gravel on the dust filter and subsequent equipment, further enhancing the adaptability and reliability of the protection system. Through a design combining pure mechanical transmission and pneumatics, the device can switch dust removal modes and adaptively adjust the interception mesh without external energy input, significantly reducing the frequency of manual maintenance and enhancing the long-term stability of the equipment under harsh conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the heat dissipation duct structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat dissipation duct of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged structural diagram of area A in the middle;

[0021] Figure 5 This is a schematic diagram of the driving component and switching component of the present invention;

[0022] Figure 6 This is a schematic diagram of the pulse cleaning component structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram of area B in the middle;

[0024] Figure 8 For this Figure 6 Enlarged structural diagram of area C;

[0025] Figure 9 This is a schematic diagram of the cleaning component structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the cross-sectional structure of the installation compartment of the present invention;

[0027] Figure 11 This is a schematic diagram of the interception and adjustment unit structure of the present invention;

[0028] Figure 12 This is a schematic diagram of the two cross-sectional structure of the filter plate of the present invention;

[0029] Figure 13 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0030] In the diagram: 1. Heat dissipation duct; 2. Dust filter; 3. Brush roller; 4. Push plate; 5. Air jet; 6. Air pressure dustproof unit; 7. Cleaning component; 71. Reciprocating screw; 72. Sliding groove; 73. Slider 1; 74. Slider 2; 75. Rotating shaft; 76. Belt drive mechanism 1; 8. Driving component; 81. Air speed bar; 82. Drive chamber; 83. Drive shaft; 84. Drive gear; 85. Drive toothed belt; 9. Pulse cleaning component; 91. Positioning plate; 92. Sliding rod 1; 93. Sliding rod 2; 94. Linking rack; 95. Wave plate; 96. Pressure plate 1; 97. Pressure plate 2; 98. Pressure spring 1; 99. Pressure spring 2; 910. Wedge block; 911. Linking gear; 912. Installation chamber; 913. Pneumatic chamber; 914. Piston plate; 915. Extrusion rod; 916. 917. Reset spring; 918. Elastic airbag; 10. Switching chamber; 10. Switching component; 102. Linkage shaft; 103. Push plate; 104. Synchronization plate; 105. Limiting rod; 106. Limiting plate; 107. Compression spring; 108. Mounting ring; 109. Linkage rod one; 1010. Pendulum ball; 1011. Lifting ring; 1012. Linkage rod two; 1013. Lifting block; 1014. Traction rope; 11. Interception adjustment unit; 12. Interception component; 121. Filter plate one; 122. Filter plate two; 123. Electric push rod; 124. Wind speed sensor; 13. Deployment component; 131. Deployment slot; 132. Deployment shaft; 133. Belt drive mechanism two; 134. Bidirectional lead screw; 135. Moving rod one; 136. Moving rod two; 137. Moving gear; 138. Moving rack. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figures 1-12 This invention provides a technical solution: a dust removal device for a wind turbine power plant, comprising a heat dissipation duct 1 disposed on both sides of the wind turbine nacelle and a dust filter 2 installed in the heat dissipation duct 1. A brush roller 3 and a push plate 4 are disposed within the heat dissipation duct 1, respectively located on both sides of the dust filter 2. The brush roller 3 is located on the windward side of the dust filter 2, and the push plate 4 is located on the leeward side of the dust filter 2. An air jet hole 5 is opened on the push plate 4 facing the dust filter 2. A wind pressure dust removal unit 6 connected to the brush roller 3 and the push plate 4 is disposed within the heat dissipation duct 1 to control the rotation of the brush roller 3 during gusty winds and simultaneously trigger the air jet hole 5 on the push plate 4 on the other side to spray air. An interception adjustment unit 11 is disposed within the heat dissipation duct 1 to adjust the interception position of sand and dust in the airflow during gusty winds.

[0033] The wind pressure dustproof unit 6 includes a cleaning component 7 disposed in the heat dissipation duct 1, which cleans the dust filter 2 under normal wind conditions. A driving component 8 is disposed on the heat dissipation duct 1, which provides power for the cleaning component 7 to work. A pulse cleaning component 9 is disposed on the dust filter 2, which cleans the dust filter 2 during gusts of strong wind. A switching component 10 is disposed on the dust filter 2, which drives the pulse cleaning component 9 to clean the dust filter 2 during gusts of strong wind.

[0034] The cleaning component 7 includes two reciprocating screws 71 rotatably disposed within the heat dissipation duct 1. The two reciprocating screws 71 are respectively located on both sides of the dust filter 2. A belt drive mechanism 76 is provided on the two reciprocating screws 71. Sliding grooves 72 are provided on both sides of the dust filter 2. A slider 73 and a slider 74 are slidably disposed in the sliding grooves 72. The reciprocating screws 71 pass through the sliders 73 and 74 and are threadedly connected to them. A rotating shaft 75 is rotatably disposed on the slider 73. One end of the rotating shaft 75 passes through the slider 73. The rotating shaft 75 is connected to the slider 73 via a damping shaft. The rotating shaft 75 is connected to the brush roller 3. The slider 74 is connected to the push plate 4.

[0035] The driving component 8 includes a wind speed rod 81 rotatably mounted on the heat dissipation duct 1. A driving chamber 82 is provided inside the heat dissipation duct 1. One end of the reciprocating lead screw 71 extends into the driving chamber 82 and is rotatably connected to the driving chamber 82. A driving shaft 83 is rotatably mounted inside the driving chamber 82. The driving shaft 83 is connected to the wind speed rod 81. Both the driving shaft 83 and the reciprocating lead screw 71 are provided with driving gears 84. A driving toothed belt 85 is sleeved on the driving gear 84.

[0036] In the working environment, the external airflow drives the wind speed rod 81 to rotate, which in turn drives the drive shaft 83 to rotate. The drive shaft 83 then drives the drive gear 84 mounted on it to rotate. When the drive gear 84 rotates, it drives multiple drive gears 84 to rotate synchronously via the drive belt 85, which in turn drives the reciprocating screws 71 on both sides of the dust filter 2 to rotate synchronously. When the reciprocating screws 71 rotate, they drive the reciprocating screws 71 on the windward and leeward sides of the dust filter 2 to rotate synchronously via the belt drive mechanism. When the reciprocating screws 71 rotate, they drive the slider 1 73 and slider 2 74, which are threaded to them, to move up and down reciprocally. During the movement of slider 1 73 and slider 2 74, they drive the brush roller 3 and the push plate 4 to move synchronously, thereby cleaning the windward side of the dust filter 2 with the brush roller 3. The design of the rotating shaft 75 being connected to slider 1 73 via a damping shaft can maintain the stability of the brush roller 3 during movement.

[0037] The synchronous movement of the brush roller 3 and the push plate 4 realizes a two-way collaborative cleaning mechanism for the dust filter 2, which significantly improves dust removal efficiency and equipment durability. When the brush roller 3 physically scrapes the windward side of the filter, the synchronously moving push plate 4 forms dynamic support on the leeward side. This not only avoids structural deformation of the filter due to unilateral force, but also completely blows the dust particles peeled off by the brush roller 3 away from the filter pores through the airflow precisely released by the jet hole 5, effectively preventing secondary clogging. This two-way action mechanism not only strengthens the filter's ability to maintain permeability in strong wind and sand environments, but also reduces the risk of filter fatigue damage through mechanical balance design. At the same time, it integrates mechanical cleaning and pneumatic backflushing functions into a single transmission system, greatly simplifying maintenance complexity and ensuring the integrity and timeliness of dust removal actions.

[0038] The pulse cleaning component 9 includes switching chambers 918 located on both sides of the dust filter 2. Two positioning plates 91 are installed within each switching chamber 91. A sliding rod 92 and a sliding rod 93 are respectively installed on each positioning plate 91. A linkage rack 94 is installed at one end of the sliding rod 92, and a pressure plate 96 is installed at the other end. A wave plate 95 is installed at one end of the sliding rod 93, and a pressure plate 97 is installed at the other end. A pressure spring 98 is fitted on the sliding rod 92 between the positioning plate 91 and the pressure plate 96. A pressure spring 99 is fitted on the sliding rod 93 between the positioning plate 91 and the pressure plate 97. Wedge blocks 910 are installed on opposite sides of the pressure plates 96 and 97. A linkage tooth is installed on the rotating shaft 75 to cooperate with the linkage rack 94. The wheel 911 has an installation chamber 912 inside the slider 74. The installation chamber 912 contains a pneumatic chamber 913. A piston plate 914 is slidably installed inside the pneumatic chamber 913. A return spring 916 is installed inside the pneumatic chamber 913. One end of the return spring 916 is connected to the piston plate 914. A compression rod 915 is installed on the piston plate 914 to cooperate with the wave plate 95. One end of the compression rod 915 passes through the pneumatic chamber 913 and the installation chamber 912 and is slidably connected to the pneumatic chamber 913 and the installation chamber 912. An elastic airbag 917 is installed inside the installation chamber 912. The pneumatic chamber 913 is connected to the elastic airbag 917 through a one-way exhaust valve. The pneumatic chamber 913 is connected to the outside through a one-way air intake valve. The elastic airbag 917 is connected to the jet hole 5 on the push plate 4.

[0039] The switching component 10 includes a connecting shaft 102 slidably disposed within the switching chamber 918. Multiple C-shaped push plates 103, which cooperate with the wedge block 910, are disposed on the connecting shaft 102. One end of the connecting shaft 102 passes through and is slidably connected to the drive chamber 82. A synchronization plate 104 is disposed at the other end of the connecting shaft 102 outside the drive chamber 82. A limit rod 105 is disposed on the heat dissipation duct 1, passing through and slidably connected to the synchronization plate 104. A limit plate 106 is disposed at the top of the limit rod 105, and the limit rod 105 is positioned between the limit plate 106 and the synchronization plate 104. A compression spring 107 is sleeved between 04. An installation ring 108 is provided on the wind speed rod 81. Multiple connecting rods 109 are rotatably provided on the installation ring 108. A pendulum ball 1010 is provided on the connecting rod 109. A lifting ring 1011 is slidably provided on the wind speed rod 81. A connecting rod 1012 rotatably connected to the connecting rod 109 is provided on the lifting ring 1011. A lifting block 1013 is slidably provided on the heat dissipation duct 1. A traction rope 1014 is provided on the lifting block 1013. One end of the traction rope 1014 is connected to the lifting ring 1011. The traction rope 1014 is made of polyester fiber.

[0040] When there are gusts of strong wind in the external environment, the wind speed lever 81 will rotate rapidly. When the wind speed lever 81 rotates, the centrifugal force will cause the connecting rod 109 and the pendulum ball 1010 to unfold. At the same time as the connecting rod 109 and the pendulum ball 1010 unfold, the connecting rod 1012 and the lifting ring 1011 will rise synchronously. When the lifting ring 1011 rises, it will cause the traction rope 1014 to pull. The traction rope 1014 will cause the lifting block 1013 to move. When the lifting block 1013 moves, it will push the synchronous plate 104 to overcome the compression spring. When the lifting ring 1011 descends, the lifting block 1013, no longer pulled, will reset under the action of the tail spring pad. When the synchronous plate 104 rises, it drives the connecting shaft 102 to rise synchronously. The rise of the connecting shaft 102 drives the C-shaped push plate 103 set on it to rise, which in turn pushes the pressure plates 96 and 97 on both sides against the opposing forces of the pressure springs 98 and 99 through the wedge blocks 910 on the pressure plates 96 and 97. The movement causes sliding rod 92 and sliding rod 93 to move synchronously. The movement of sliding rods 92 and 93 causes the corrugated plate 95 and the connecting rack 94 to extend from the switching chamber 918. After extending, the connecting rack 94 meshes with the connecting gear 911, thereby driving the rotating shaft 75 to rotate, which in turn drives the brush roller 3 to rotate. This causes the brush roller 3 to rotate while moving up and down, improving the cleaning effect of the dust filter 2. Simultaneously, the corrugated plate 95 extends from the switching chamber 918 and contacts the squeezing rod 915. As the extrusion rod 915 rises along with the slider 74, it is pushed by the return spring 916 to rotate cyclically. When the extrusion rod 915 moves back to the return position, it drives the piston plate 914 to move back and forth in the pneumatic chamber 913. This, in conjunction with the one-way air intake valve and the one-way air exhaust valve, continuously sends gas into the elastic airbag 917. The gas in the elastic airbag 917 is then ejected from the jet hole 5 of the push plate 4 under the elastic force of the elastic airbag 917 itself, to assist the brush roller 3 in cleaning the dust filter 2.

[0041] The design achieves adaptive enhancement of the dust removal function through mechanical linkage, significantly improving the self-maintenance capability of the wind tower in extreme wind and sand environments. Its core value lies in converting gusty winds into efficient cleaning energy: when the wind speed increases sharply, the centrifugal pendulum ball 1010 triggers the wedge block 910 to drive the brush roller 3 to rotate in the reciprocating motion, causing the bristles to produce a multi-angle scraping effect, accelerating the removal of micro-dust embedded in the filter pores; the synchronously extended corrugated plate 95 is transformed into a pneumatic pulse generator, which converts the reciprocating mechanical energy into high-pressure airflow through the designed one-way valve group in the air path, in the filter... The back side of the screen forms directional dust removal. This dual cleaning mode of mechanical and pneumatic cleaning not only breaks through the limitations of traditional single-effect dust removal, but also, through the high coordination of action sequence, ensures that dust particles are carried away by the airflow the moment they leave the filter, thus preventing secondary adsorption at the source. The entire mechanism is driven by wind power, which enhances the cleaning effect while maintaining low energy consumption. Furthermore, through the precise cooperation between the reset spring 916 and the limit structure, the system is ensured to automatically reset and standby after the wind conditions stabilize, which greatly reduces the fatigue wear of key components and provides a reliable guarantee for the unattended operation of wind tower power generation equipment in areas with frequent sandstorms.

[0042] The interception adjustment unit 11 includes an interceptor 12 disposed in the heat dissipation duct 1. The interceptor 12 intercepts large particles of sand and gravel in the airflow. An unfolding member 13 is disposed on the interceptor 12, and the size of the interception mesh of the interceptor 12 is adjusted by the unfolding member 13.

[0043] The interceptor 12 includes a filter plate 121 disposed in the heat dissipation duct 1, the filter plate 121 being located on the windward side of the dust filter 2, a filter plate 122 being slidably disposed in the heat dissipation duct 1, an electric push rod 123 being disposed on the filter plate 121, one end of the electric push rod 123 being connected to the filter plate 122, and a wind speed sensor 124 being disposed on the wind speed rod 81.

[0044] The unfolding component 13 includes an unfolding groove 131 formed in the filter plate 122. Multiple unfolding shafts 132 are rotatably arranged in the unfolding groove 131. A belt drive mechanism 133 is provided on the multiple unfolding shafts 132. One end of each unfolding shaft 132 passes through the unfolding groove 131. Multiple bidirectional lead screws 134 are provided on the unfolding shaft 132. A first moving rod 135 and a second moving rod 136 are respectively provided at both ends of each bidirectional lead screw 134. The first moving rod 135 and the second moving rod 136 are threadedly connected to the bidirectional lead screw 134. A moving gear 137 is provided at the end of the unfolding shaft 132 located outside the unfolding groove 131. A moving rack 138 that meshes with the moving gear 137 is provided in the heat dissipation duct 1.

[0045] When the wind speed sensor 124 installed on the wind speed rod 81 detects that the ambient wind speed has reached the threshold, it will activate the electric push rod 123 to drive the filter plate 122 to move towards the opening of the heat dissipation duct 1. During the movement, the filter plate 122 drives the moving gear 137 installed on it to move synchronously. The moving gear 137 meshes with the moving rack 138 during the movement and rotates under the push of the moving rack 138. The rotation of the moving gear 137 drives the unfolding shaft 132 to rotate. The rotation of the unfolding shaft 132 drives the multiple bidirectional lead screws 134 installed on it to rotate synchronously. The rotation of the bidirectional lead screws 134 drives the moving rod 135 and the moving rod 136 installed at both ends to move towards each other, thereby achieving the effect of expanding the filter holes on the filter plate. The enlarged filter holes can intercept larger sand and gravel, avoiding large sand and gravel particles from impacting the dust filter 2. At the same time, the design of the filter plate 121 can intercept medium-sized particles, avoiding excessive impact on the dust filter 2.

[0046] When the wind speed sensor 124 detects a strong wind signal, the electric push rod 123 drives the filter plate 122 to move forward. During the movement, the bidirectional lead screw 134 rotates synchronously through the meshing transmission of the moving gear 137 and the fixed rack, driving the moving rod to extend and retract, thereby controlling the filter pore size. This expanded pore structure intercepts large particles of sand and gravel while maintaining reasonable wind resistance by controlling the pore expansion. This avoids impact damage to the main filter screen from high-speed sand and gravel, and also prevents fine dust particles from penetrating due to fully open filter pores. The front-mounted filter plate 121 forms a secondary buffer barrier, specifically screening out medium-sized impurities. While enhancing the primary filtration efficiency, it significantly reduces the physical load and clogging risk of the dust filter 2. Its modular structure makes maintenance and replacement easier.

[0047] Example 2: Please refer to Figure 13 This invention provides a technical solution: the traction rope 1014 is made of nylon. Compared with polyester fiber, the nylon traction rope 1014 significantly improves dynamic response capability and long-term reliability. Its core advantage lies in the high elastic modulus and excellent fatigue resistance of nylon material, which can accurately transmit mechanical displacement caused by wind speed changes, while effectively absorbing instantaneous impact loads caused by gusty winds, avoiding mechanism jamming or component deformation caused by rigid traction; its inherent wear-resistant and weather-resistant characteristics are more suitable for the extreme working conditions of wind towers with high temperature, high humidity and strong ultraviolet radiation, maintaining stable tension output in long-term reciprocating motion, ensuring that the linkage timing of the centrifugal pendulum ball 1010 mechanism and the lifting ring 1011 is always synchronized.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A dustproof and dust-removing device for a wind tower power station, comprising heat dissipation air ducts (1) arranged on both sides of a wind tower nacelle and dustproof filter screens (2) installed in the heat dissipation air ducts (1), characterized in that: The heat dissipation air duct (1) is provided with a brush roller (3) and a push plate (4), the brush roller (3) and the push plate (4) are located on both sides of the dustproof filter screen (2) respectively, the brush roller (3) is located on the windward side of the dustproof filter screen (2), the push plate (4) is located on the leeward side of the dustproof filter screen (2), the push plate (4) is provided with a jet hole (5) on the side facing the dustproof filter screen (2), the heat dissipation air duct (1) is provided with a wind pressure dustproof unit (6) connected with the brush roller (3) and the push plate (4), for controlling the rotation of the brush roller (3) when the gusty wind occurs, and synchronously triggering the jet hole (5) on the push plate (4) on the other side to jet, the heat dissipation air duct (1) is provided with an interception adjusting unit (11) for adjusting the interception position of the sand and dust in the airflow when the gusty wind occurs.

2. A wind tower power plant guard dust removal device according to claim 1, characterized in that: The wind pressure dustproof unit (6) comprises a cleaning piece (7) arranged in the heat dissipation air duct (1), the dustproof filter screen (2) is cleaned under normal wind force environment by the cleaning piece (7), the heat dissipation air duct (1) is provided with a driving piece (8), the driving piece (8) provides power for the cleaning piece (7) to work, the dustproof filter screen (2) is provided with a pulse cleaning piece (9) for cleaning the dustproof filter screen (2) when the gusty wind occurs, and the dustproof filter screen (2) is provided with a switching piece (10) for driving the pulse cleaning piece (9) to clean the dustproof filter screen (2) when the gusty wind occurs.

3. A wind tower power plant guard dust removal device according to claim 2, characterized in that: The cleaning piece (7) comprises two reciprocating wire rods (71) rotatably arranged in the heat dissipation air duct (1), the two reciprocating wire rods (71) are located on both sides of the dustproof filter screen (2) respectively, the two reciprocating wire rods (71) are provided with a belt transmission mechanism one (76), the dustproof filter screen (2) is provided with a sliding groove (72) on both sides, the sliding groove (72) is slidably provided with a sliding block one (73) and a sliding block two (74), the reciprocating wire rod (71) penetrates the sliding block one (73) and the sliding block two (74) and is threadedly connected with the sliding block one (73) and the sliding block two (74), the sliding block one (73) is rotatably provided with a rotating shaft (75), one end of the rotating shaft (75) penetrates the sliding block one (73), the rotating shaft (75) is connected with the sliding block one (73) through a damping rotating shaft, the rotating shaft (75) is connected with the brush roller (3), and the sliding block two (74) is connected with the push plate (4).

4. A wind tower power plant guard dust removal device according to claim 3, characterized in that: The driving piece (8) comprises a wind speed rod (81) rotatably arranged on the heat dissipation air duct (1), the heat dissipation air duct (1) is provided with a driving bin (82), one end of the reciprocating wire rod (71) penetrates the driving bin (82) and is rotatably connected with the driving bin (82), the driving bin (82) is rotatably provided with a driving shaft (83), the driving shaft (83) is connected with the wind speed rod (81), the driving shaft (83) and the reciprocating wire rod (71) are provided with driving gears (84), and the driving gears (84) are provided with a driving gear belt (85).

5. A wind tower power plant guard dust removal device according to claim 4, characterized in that: The pulse cleaning piece (9) comprises switching bins (918) opened on both sides of the dust filter screen (2), two positioning plates (91) are arranged in the switching bins (918), sliding rod one (92) and sliding rod two (93) are respectively arranged on the two positioning plates (91), the sliding rod one (92) is provided with a linkage rack (94) at one end and a pressure receiving plate one (96) at the other end, the sliding rod two (93) is provided with a wave plate (95) at one end and a pressure receiving plate two (97) at the other end, the pressure spring one (98) is sleeved on the sliding rod one (92) between the positioning plate (91) and the pressure receiving plate one (96), the pressure spring two (99) is sleeved on the sliding rod two (93) between the positioning plate (91) and the pressure receiving plate two (97), the pressure receiving plate one (96) and the pressure receiving plate two (97) are provided with wedge blocks (910) on opposite sides, the rotating shaft (75) is provided with a linkage gear (911) matched with the linkage rack (94), the sliding block two (74) is provided with a mounting bin (912), the mounting bin (912) is provided with a pneumatic bin (913), the pneumatic bin (913) is provided with a piston plate (914) slidingly arranged therein, the pneumatic bin (913) is provided with a reset spring (916), one end of the reset spring (916) is connected with the piston plate (914), the piston plate (914) is provided with an extrusion rod (915) matched with the wave plate (95), one end of the extrusion rod (915) penetrates through the pneumatic bin (913) and the mounting bin (912) and is connected with the pneumatic bin (913) and the mounting bin (912) in a sliding mode, the mounting bin (912) is provided with an elastic air bag (917), the pneumatic bin (913) is communicated with the elastic air bag (917) through a one-way exhaust valve, the pneumatic bin (913) is communicated with the outside through a one-way air inlet valve, the elastic air bag (917) is communicated with the jet hole (5) on the push plate (4).

6. A wind tower power plant guard dust removal apparatus according to claim 5, characterized in that: The switching piece (10) includes a linkage shaft (102) slidingly arranged in a switching bin (918), a plurality of C-shaped push plates (103) are arranged on the linkage shaft (102) and used in cooperation with the wedge-shaped blocks (910), one end of the linkage shaft (102) penetrates through the driving bin (82) and is in sliding connection with the driving bin (82), a synchronization plate (104) is arranged at one end of the linkage shaft (102) located outside the driving bin (82), a limiting rod (105) is arranged on the heat dissipation air duct (1), the limiting rod (105) penetrates through the synchronization plate (104) and is in sliding connection with the synchronization plate (104), a limiting plate (106) is arranged at the top end of the limiting rod (105), an extrusion spring (107) is sleeved on the limiting rod (105) between the limiting plate (106) and the synchronization plate (104), a mounting ring (108) is arranged on the wind speed rod (81), a plurality of connecting rods I (109) are rotatably arranged on the mounting ring (108), swing balls (1010) are arranged on the connecting rods I (109), a lifting ring (1011) is slidingly arranged on the wind speed rod (81), connecting rods II (1012) in rotating connection with the connecting rods I (109) are rotatably arranged on the lifting ring (1011), a lifting block (1013) is slidingly arranged on the heat dissipation air duct (1), a traction rope (1014) is arranged on the lifting block (1013), one end of the traction rope (1014) is connected with the lifting ring (1011), and the traction rope (1014) is made of polyester fiber material.

7. A wind tower power plant guard dust removal apparatus according to claim 6, characterized in that: The intercepting adjusting unit (11) includes an intercepting piece (12) arranged in the heat dissipation air duct (1), and large particles of sand and gravel in the airflow are intercepted through the intercepting piece (12), and the intercepting piece (12) is provided with an unfolding piece (13), and the size of the interception mesh of the intercepting piece (12) is adjusted through the unfolding piece (13).

8. A wind tower power plant guard dust removal apparatus according to claim 7, characterized in that: The intercepting piece (12) includes a filter plate I (121) arranged in the heat dissipation air duct (1), the filter plate I (121) is located on the windward side of the dustproof filter screen (2), a filter plate II (122) is slidingly arranged in the heat dissipation air duct (1), the filter plate I (121) is provided with an electric push rod (123), one end of the electric push rod (123) is connected with the filter plate II (122), and the wind speed rod (81) is provided with a wind speed sensor (124).

9. A wind tower power plant guard dust removal apparatus according to claim 8, characterized in that: The unfolding member (13) comprises an unfolding slot (131) formed in the second filter plate (122), a plurality of unfolding shafts (132) are rotatably arranged in the unfolding slot (131), a belt transmission mechanism two (133) is arranged on the plurality of unfolding shafts (132), one end of the unfolding shaft (132) penetrates the unfolding slot (131), a plurality of bidirectional screw rods (134) are arranged on the unfolding shaft (132), a moving rod one (135) and a moving rod two (136) are respectively arranged at two ends of the bidirectional screw rod (134), the moving rod one (135) and the moving rod two (136) are in threaded connection with the bidirectional screw rod (134), a moving gear (137) is arranged at an end of the unfolding shaft (132) located outside the unfolding slot (131), and the heat dissipation air duct (1) is provided with a moving rack (138) engaged with the moving gear (137).

10. A wind tower power plant guard dust removal apparatus according to claim 9, characterized in that: The traction rope (1014) is made of nylon.

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