Large wind turbine blade
By installing an inclined jet head and a rotating unit on the wind power blades, the jet head is automatically rotated by gravity driving components, the operation problems caused by ice and snow are solved, and the normal operation of the wind power blades and the stable operation of the equipment is achieved.
Patent Information
- Application Number
- CN202111242512.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-10-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2041-10-25
AI Technical Summary
Wind power blades cannot operate in harsh environments due to the adhesion of ice and snow. The existing heating airflow blowing methods cannot effectively and evenly contact the surface of the blades, resulting in the inability to effectively remove ice and snow.
Design a large wind turbine blade, which uses multiple jet heads to be installed at an inclined angle, and automatically rotates the jet head through gravity drive assembly and rotating unit, spraying a uniform hot air flow, ensuring that the hot air flow can fully contact the upper mold and the lower The surface of the mold blades blows away the attached snow.
The normal operation of wind power blades under the influence of ice and snow has been achieved, the snow-refining capacity has been improved, the continuous and normal operation of wind power unit equipment has been ensured, and the difficulty of maintenance and personnel work risks have been reduced.
Smart Images
Figure CN113883000B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wind power generation, and in particular to a large-scale wind turbine blade. Background Art
[0002] Wind power generation refers to the conversion of wind's kinetic energy into electrical energy. Wind is a pollution-free energy source. Using wind power to generate electricity is very environmentally friendly and can generate huge amounts of electricity. Therefore, more and more countries are paying more attention to wind power generation. Wind power generation is generally carried out through large wind turbine blades.
[0003] The fan blades in wind power generation equipment are the most expensive parts of the fan. Since wind power generation is often installed in high-altitude areas, the operating environment is extremely harsh and is often affected by a series of factors such as ice and snow, resulting in a large amount of ice and snow attached to the surface of the blades, making the wind turbine blades unable to operate due to freezing, affecting the operation of other equipment. When heated airflow is used to blow and de-ice the wind turbine blades, the hot airflow cannot automatically and evenly blow along the surface of the wind turbine blades due to the arc-shaped surface of the wind turbine blades, resulting in a small area of hot airflow contacting the wind turbine blades, making it impossible to effectively remove ice and snow. Therefore, the present application proposes a large wind turbine blade to meet the demand. Summary of the invention
[0004] The purpose of the present application is to provide a large-scale wind turbine blade, wherein the nozzle can rotate and automatically spray out a uniform hot air flow, so that the hot air flow can be quickly and evenly blown onto the outer surfaces of the upper mold blade and the lower mold blade, so that the outer surfaces of the upper mold blade and the lower mold blade can be more comprehensively exposed to the hot air flow, so that the ice and snow attached to the outer sides of the upper mold blade and the lower mold blade can be melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a large wind turbine blade, comprising an upper mold blade, a lower mold blade, and a blade root end installed on one end of the upper mold blade and the lower mold blade, wherein a plurality of nozzles are installed on the upper mold blade and the lower mold blade, and the plurality of nozzles are arranged at a certain inclination angle, and a gravity drive component for providing power and a rotating unit for rotating the nozzle heads back and forth are installed on the side where the upper mold blade and the lower mold blade are close to each other, and the plurality of nozzles are installed on the rotating unit, and a hot air transmission component for providing hot air is installed on the root end of the blade, and the hot air transmission component is connected to the rotating unit.
[0006] By means of the above structure, a large amount of hot air flow is provided to the rotating unit through the hot air transmission component. When the wind turbine blades rotate, the position of the gravity drive component will change. The movement of the gravity drive component drives the rotating unit to rotate, so that the nozzle head can rotate automatically. Since the nozzle head is inclined toward the outer surfaces of the upper mold blades and the lower mold blades, the hot air flow ejected from the nozzle head can be quickly and evenly blown onto the outer surfaces of the upper mold blades and the lower mold blades, so that the outer surfaces of the upper mold blades and the lower mold blades can be more comprehensively exposed to the hot air flow, so that the ice and snow attached to the surface of the wind turbine blades can be melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0007] Preferably, the rotating unit includes two front top plates and two rear top plates respectively installed on the side where the upper mold blade and the lower mold blade are close to each other, a front support plate is installed on the side where the two front top plates are close to each other, and a rear support plate is installed on the side where the two rear top plates are close to each other, a connecting card is installed on the side where the front support plate and the rear support plate are close to each other, a front rotating air column and a rear rotating air column are rotatably installed on the connecting card, a plurality of the nozzles are respectively and evenly installed on the side walls at both ends of the front rotating air column and the side walls at both ends of the rear rotating air column, the gravity drive component is installed on the side wall of the connecting card, and the front rotating air column and the rear rotating air column are both connected to the hot air transfer component.
[0008] Furthermore, through the rotating unit, the hot air transfer component generates a large amount of hot air flow, and the hot air flow passes through the front rotating air column and the rear rotating air column. Driven by the gravity drive component, the nozzle rotates, so that the hot air flow can be quickly and evenly blown onto the outer surfaces of the upper mold blades and the lower mold blades, so that the ice and snow attached to the outside of the upper mold blades and the lower mold blades are melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0009] Preferably, the front rotating air column and the rear rotating air column are both rotatably mounted on the side walls of the upper mold blade and the lower mold blade, and the multiple nozzles on both ends of the front rotating air column and the rear rotating air column are symmetrically arranged accordingly.
[0010] Furthermore, through the nozzles, since the nozzles are inclined toward the outer surfaces of the upper mold blades and the lower mold blades, the hot air flow blown out by the nozzles can blow against the outer surfaces of the upper mold blades and the lower mold blades, so that the hot air flow contacts more ice and snow, melts the ice and snow faster, and improves the snow-melting ability of the wind turbine blades.
[0011] Preferably, the inner diameters of the front rotating air column and the rear rotating air column are set to be the same, and the length of the front rotating air column is set to be longer than the length of the rear rotating air column.
[0012] Furthermore, by providing the front rotating air column and the rear rotating air column, the lengths of the front rotating air column and the rear rotating air column outside the wind turbine blade are made more suitable, so that the wind turbine blade is more stable when rotating and will not be affected by the front rotating air column and the rear rotating air column.
[0013] Preferably, the hot gas transfer component includes a root end web installed on the inner wall of the root end of the blade, a heating pump is installed on the side wall of the root end web, a heat pipe is installed on the output end of the heat pump, a fixing hole is opened on the side wall of the front support plate, the heat pipe is installed on the inner wall of the fixing hole, and the front rotating air column and the rear rotating air column are connected to the heat pipe through an air guiding sealing unit.
[0014] Furthermore, through the hot air transmission component, the heating pump generates a large amount of hot air flow, which passes through the heat pipe, the air guide sealing unit, and then is introduced into the front rotating air column and the rear rotating air column, so that the ice and snow on the wind turbine blades can be melted faster.
[0015] Preferably, the gravity-driven assembly includes two L-shaped support rods installed on the side walls of the connecting card plate, and sliding brackets are installed on the top ends of the two L-shaped support rods. A convex slide groove is opened on the side wall of the sliding bracket, and a convex slide block is slidably installed on the inner wall of the convex slide groove. A pulling guide rod is installed on the side wall of the convex slide block, and a limiting ring is installed on one end of the pulling guide rod, and a rolling ball is adapted to be installed on the inner wall of the limiting ring. Two symmetrically arranged connecting rods are installed on the side wall of the limiting ring, and connecting racks are installed on the ends of the two connecting rods away from each other. Connecting gears are sleeved and installed on the front rotating air column and the rear rotating air column, and the two connecting racks are respectively meshed with the two connecting gears.
[0016] Furthermore, through the gravity-driven component, when the wind turbine blades rotate, under the action of gravity, the rolling ball can move with the rotation of the blades, and then the rolling ball moves back and forth, the connecting rack moves back and forth, and the connecting gear rotates forward and reverse, so that the hot air flow can blow quickly and evenly to the outer surface of the wind turbine blades, so that the ice and snow attached to the outside of the wind turbine blades are melted by the hot air flow, so that the wind turbine blades will not be frozen by the ice and snow attached, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0017] Preferably, the air guiding sealing unit includes leak-proof sleeves which are rotatably sleeved on the front rotating air column and the rear rotating air column respectively, the side walls of the two leak-proof sleeves are provided with connecting holes, the inner walls of the two connecting holes are provided with connecting ducts, the side walls of the leak-proof sleeve on the front rotating air column are provided with transmission holes, the heat conducting pipe is installed on the inner wall of the transmission hole, the side walls of the front rotating air column and the rear rotating air column are provided with a plurality of evenly arranged air guiding holes, the plurality of air guiding holes on the front rotating air column and the plurality of air guiding holes on the rear rotating air column are respectively arranged inside the two leak-proof sleeves.
[0018] Furthermore, through the air guiding sealing unit, the hot air flow can be transmitted to the front rotating air column and the rear rotating air column through the heat conducting pipe and the leak-proof sleeve, so that the ice and snow attached to the outside of the wind turbine blades can be melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally and other equipment can operate normally.
[0019] Preferably, buffer springs are installed on the two opposite inner walls of the convex slide groove, the two buffer springs are in contact with the convex sliding block, L-shaped reinforcement rods are installed on the side walls of the two connecting rods, and one end of the two L-shaped reinforcement rods is installed on the side wall of the pulling guide rod.
[0020] Furthermore, through the buffer spring, when the wind turbine blade is in a vertical state, the convex slider contacts the buffer spring, so that the buffer spring is impacted by gravity and is compressed. Under the action of the elastic deformation restoring force of the buffer spring, the impact force generated by the convex slider is buffered, thereby making the wind turbine blade more stable when rotating.
[0021] Preferably, a pair of L-shaped clamping rods are installed on the side walls of the two leak-proof sleeves, and one end of the two pairs of L-shaped clamping rods are installed on the bottom of the connecting clamp plate.
[0022] Furthermore, the L-shaped clamping rod can prevent the leak-proof sleeve from rotating, so that the hot air flow can pass into the leak-proof sleeve more stably, so that the ice and snow attached to the outside of the wind turbine blades can be melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the ice and snow, and the wind turbine blades can operate normally.
[0023] In summary, the technical effects and advantages of this application are:
[0024] 1. The present invention has a reasonable structure. When the wind turbine blades are used, the heating pump is started, and the hot air flow generated by the heating pump passes through the front rotating air column and the rear rotating air column and is ejected from the nozzle. When the wind turbine blades rotate, under the action of gravity, the rolling ball moves back and forth, the connecting rack moves back and forth, the connecting gear rotates forward and reversely, and the front rotating air column and the rear rotating air column drive the nozzle to rotate, so that the hot air flow ejected from the nozzle is quickly and evenly blown onto the outer surfaces of the upper mold blade and the lower mold blade, so that the ice and snow attached to the outer sides of the upper mold blade and the lower mold blade are melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0025] 2. In the present invention, since the nozzles are inclined toward the outer surfaces of the upper mold blade and the lower mold blade, the hot air flow blown out by the nozzles can be blown close to the outer surfaces of the upper mold blade and the lower mold blade, and the hot air flow blown out by the nozzles in a rotating state can make the hot air flow contact more ice and snow, so that the ice and snow melt faster, improve the snow melting ability of the wind turbine blades, so that the wind turbine blades will not be affected by the wind and snow, so that the wind turbine blades can continue to rotate normally, and the wind turbine set will not be damaged;
[0026] 3. In the present invention, after the wind turbine blades have been used for a long time, the outer surfaces of the upper and lower mold blades will be contaminated with a lot of dust. The heating pump is started to blow air from the nozzle to blow off the dust on the outer surfaces of the upper and lower mold blades, making the surface of the wind turbine blades cleaner. This eliminates the need for personnel to hang on the wind turbine blades for cleaning, thereby reducing the workload of personnel and improving the safety of wind turbine blade maintenance.
[0027] 4. In the present invention, during the rotation of the wind turbine blade, the rolling ball moves, the convex slider slides stably in the convex slide groove, and the connecting rack drives the connecting gear to rotate more stably, so that the wind turbine blade can remove external ice and snow more stably and melt snow faster. When the upper mold blade and the lower mold blade are in a vertical state, the convex slider contacts the buffer spring, so that the buffer spring is impacted by gravity and compressed. Under the action of the elastic deformation restoring force of the buffer spring, the impact force generated by the convex slider is buffered, thereby making the wind turbine blade more stable during rotation;
[0028] 5. In the present invention, the root end web enables the root end of the blade to better withstand the torsional force generated by the upper mold blade and the lower mold blade during rotation, making the wind turbine blade more stable during rotation and preventing the wind turbine blade from detaching from the wind turbine generator set. The front support plate, connecting card plate, rear top plate, front top plate and connecting card plate make the upper mold blade and the lower mold blade more firmly bonded, making the upper mold blade and the lower mold blade less likely to be damaged during rotation, thereby extending the service life of the wind turbine blade. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of a large wind turbine blade from a first-person perspective;
[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of a large wind turbine blade from a second perspective;
[0032] Figure 3 It is a schematic diagram of the front view structure of a large wind turbine blade;
[0033] Figure 4 It is a schematic diagram of the internal three-dimensional structure of a large wind turbine blade;
[0034] Figure 5 for Figure 4 The middle part is an enlarged schematic diagram of the three-dimensional structure;
[0035] Figure 6 for Figure 4 A in the middle is an enlarged schematic diagram of the three-dimensional structure;
[0036] Figure 7 It is a schematic diagram of the enlarged three-dimensional structure of the hot gas transmission component;
[0037] Figure 8 This is an enlarged schematic diagram of the three-dimensional structure of the rotating unit.
[0038] In the figure: 1. upper mold blade; 2. lower mold blade; 3. blade root end; 4. root end web; 5. heat transfer pipe; 6. front support plate; 7. rear support plate; 8. connecting clamp plate; 9. rolling ball; 10. limiting collar; 11. connecting pull rod; 12. front rotating air column; 13. rear rotating air column; 14. nozzle; 15. connecting gear; 16. connecting rack; 17. L-shaped support rod; 18. sliding bracket; 19. convex slider; 20. pulling guide rod; 21. L-shaped reinforcing rod; 22. buffer spring; 23. heating pump; 24. connecting conduit; 25. L-shaped clamp rod; 26. leak-proof sleeve; 27. rear top plate; 28. front top plate. DETAILED DESCRIPTION
[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.
[0040] Example: Reference Figure 1-8 A large wind turbine blade shown in the figure comprises an upper mold blade 1, a lower mold blade 2 installed at the bottom of the upper mold blade 1, and a blade root end 3 installed at one end of the upper mold blade 1 and the lower mold blade 2. A plurality of nozzles 14 are installed on the upper mold blade 1 and the lower mold blade 2. The plurality of nozzles 14 are respectively arranged at a certain inclination angle corresponding to the side walls of the upper mold blade 1 and the lower mold blade 2. A gravity drive component for providing power and a rotating unit for rotating the nozzle head 14 back and forth are installed on the side where the upper mold blade 1 and the lower mold blade 2 are close to each other. The plurality of nozzles 14 are all installed on the rotating unit, and the gravity drive component is adapted to be installed with the rotating unit. A hot air transmission component for providing hot air is installed on the blade root end 3, and the hot air transmission component is connected to the rotating unit.
[0041] Based on the above structure, through the setting of the hot air transmission component, a large amount of hot air flow is provided to the rotating unit. When the wind turbine blades rotate, the position of the gravity drive component will change. The movement of the gravity drive component drives the rotating unit to rotate, so that the nozzle head 14 can rotate automatically. Since the nozzle head 14 is inclined toward the outer surfaces of the upper mold blade 1 and the lower mold blade 2, the hot air flow ejected from the nozzle head 14 can be quickly and evenly blown onto the outer surfaces of the upper mold blade 1 and the lower mold blade 2, so that the outer surfaces of the upper mold blade 1 and the lower mold blade 2 can be more comprehensively exposed to the hot air flow, so that the ice and snow attached to the surface of the wind turbine blades can be blown away by the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0042] As a preferred implementation of this embodiment, Figure 5 , Figure 6As shown, the rotating unit includes two front top plates 28 and two rear top plates 27 respectively installed on the side where the upper mold blade 1 and the lower mold blade 2 are close to each other, a front support plate 6 is installed on the side where the two front top plates 28 are close to each other, and a rear support plate 7 is installed on the side where the two rear top plates 27 are close to each other, a connecting card plate 8 is installed on the side where the front support plate 6 and the rear support plate 7 are close to each other, a front rotating air column 12 and a rear rotating air column 13 are rotatably installed on the connecting card plate 8, a plurality of nozzles 14 are evenly installed on the side walls at both ends of the front rotating air column 12 and the side walls at both ends of the rear rotating air column 13, a gravity drive component is installed on the side wall of the connecting card plate 8, and the front rotating air column 12 and the rear rotating air column 13 are both connected to the hot air transfer component.
[0043] By setting the rotating unit, the hot air transfer component generates a large amount of hot air flow, and the hot air flow passes through the front rotating air column 12 and the rear rotating air column 13. Driven by the gravity drive component, the nozzle 14 rotates, so that the hot air flow can be quickly and evenly blown onto the outer surfaces of the upper mold blade 1 and the lower mold blade 2, so that the ice and snow attached to the outer sides of the upper mold blade 1 and the lower mold blade 2 are melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0044] In this embodiment, if Figure 5 As shown, the front rotating air column 12 and the rear rotating air column 13 are both rotatably mounted on the side walls of the upper mold blade 1 and the lower mold blade 2, and the multiple nozzles 14 on both ends of the front rotating air column 12 and the rear rotating air column 13 are symmetrically arranged accordingly.
[0045] Through the setting of the nozzle 14, since the nozzle 14 is inclined toward the outer surfaces of the upper mold blade 1 and the lower mold blade 2, the hot air flow blown out by the nozzle 14 can be blown along the outer surfaces of the upper mold blade 1 and the lower mold blade 2, so that the hot air flow contacts more ice and snow, melts the ice and snow faster, and improves the snow-melting ability of the wind turbine blades.
[0046] In this embodiment, if Figure 5 As shown, the inner diameters of the front rotating air column 12 and the rear rotating air column 13 are set to be the same, and the length of the front rotating air column 12 is longer than the length of the rear rotating air column 13.
[0047] By setting the front rotating air column 12 and the rear rotating air column 13, the length of the front rotating air column 12 and the rear rotating air column 13 located on the outside of the wind turbine blade is more suitable, making the wind turbine blade more stable when rotating and not affected by the front rotating air column 12 and the rear rotating air column 13.
[0048] As a preferred implementation of this embodiment, Figure 7As shown, the hot gas transmission component includes a root end web 4 installed on the inner wall of the root end 3 of the blade, a heating pump 23 is installed on the side wall of the root end web 4, a heat pipe 5 is installed on the output end of the heating pump 23, a fixing hole is opened on the side wall of the front support plate 6, the heat pipe 5 is installed on the inner wall of the fixing hole, and the front rotating air column 12 and the rear rotating air column 13 are connected to the heat pipe 5 through an air guide sealing unit.
[0049] By setting up the hot air transmission component, the heating pump 23 generates a large amount of hot air flow, which passes through the heat pipe 5, the air guide sealing unit, and then is introduced into the front rotating air column 12 and the rear rotating air column 13, so that the ice and snow on the wind turbine blades can be melted faster.
[0050] In this embodiment, if Figure 6 As shown, the gravity drive assembly includes two L-shaped support rods 17 installed on the side wall of the connecting card plate 8, and a sliding bracket 18 is installed on the top of the two L-shaped support rods 17. A convex slide groove is opened on the side wall of the sliding bracket 18, and a convex slider 19 is slidably installed on the inner wall of the convex slide groove. A pulling guide rod 20 is installed on the side wall of the convex slider 19, and a limiting collar 10 is installed at one end of the pulling guide rod 20. A rolling ball 9 is adapted to be installed on the inner wall of the limiting collar 10, and two symmetrically arranged connecting rods 11 are installed on the side wall of the limiting collar 10. A connecting rack 16 is installed at the ends of the two connecting rods 11 away from each other, and a connecting gear 15 is sleeved and installed on the front rotating air column 12 and the rear rotating air column 13, and the two connecting racks 16 are respectively meshed with the two connecting gears 15.
[0051] By setting the gravity drive component, when the wind turbine blades rotate, under the action of gravity, the rolling ball 9 can move with the rotation of the blades, and then the rolling ball 9 can move back and forth, the connecting rack 16 can move back and forth, and the connecting gear 15 can rotate forward and reverse, so that the hot air flow can be blown to the outer surface of the wind turbine blades quickly and evenly, so that the ice and snow attached to the outside of the wind turbine blades are blown away by the hot air flow, so that the wind turbine blades will not be frozen by the ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0052] In this embodiment, if Figure 7As shown, the air-guiding sealing unit includes leak-proof sleeves 26 which are rotatably sleeved on the front rotating air column 12 and the rear rotating air column 13 respectively. The front rotating air column 12 and the rear rotating air column 13 are both rotatably sleeved with leak-proof sleeves 26. The side walls of the two leak-proof sleeves 26 are provided with connecting holes. The inner walls of the two connecting holes are provided with connecting ducts 24. The side walls of the leak-proof sleeve 26 on the front rotating air column 12 are provided with transmission holes. The heat-conducting pipe 5 is installed on the inner wall of the transmission hole. The side walls of the front rotating air column 12 and the rear rotating air column 13 are provided with a plurality of evenly arranged air-guiding holes. The plurality of air-guiding holes on the front rotating air column 12 and the plurality of air-guiding holes on the rear rotating air column 13 are respectively arranged inside the two leak-proof sleeves 26.
[0053] By setting up the air-conducting sealing unit, the hot air flow can pass through the heat-conducting pipe 5 and the leak-proof sleeve 26 and be transmitted to the front rotating air column 12 and the rear rotating air column 13, so that the ice and snow attached to the outside of the wind turbine blades can be blown away by the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0054] In this embodiment, if Figure 6 As shown, buffer springs 22 are installed on the two opposite inner walls of the convex slide groove, and the two buffer springs 22 are in contact with the convex slider 19. L-shaped reinforcement rods 21 are installed on the side walls of the two connecting rods 11, and one end of the two L-shaped reinforcement rods 21 is installed on the side wall of the pulling guide rod 20.
[0055] By setting the buffer spring 22, when the wind turbine blade is in a vertical state, the convex slider 19 contacts the buffer spring 22, so that the buffer spring 22 is impacted by gravity and compressed. Under the action of the elastic deformation restoring force of the buffer spring 22, the impact force generated by the convex slider 19 is buffered, thereby making the wind turbine blade more stable when rotating.
[0056] In this embodiment, if Figure 7 As shown, a pair of L-shaped clamping rods 25 are installed on the side walls of the two leak-proof sleeves 26 , and one end of the two pairs of L-shaped clamping rods 25 are installed on the bottom of the connecting clamping plate 8 .
[0057] By setting the L-shaped clamping rod 25, the leak-proof sleeve 26 will not rotate, so that the hot air flow can pass into the leak-proof sleeve 26 more stably, so that the ice and snow attached to the outside of the wind turbine blades can be blown away by the hot air flow, so that the wind turbine blades will not be frozen by the ice and snow, and the wind turbine blades can operate normally.
[0058] Working principle of the present invention: When using the wind turbine blades, when there is slight ice and snow on the outer sides of the upper mold blade 1 and the lower mold blade 2, start the heating pump 23, so that the hot air flow generated by the heating pump 23 is transmitted to the front rotating air column 12 and the rear rotating air column 13 through the heat conducting pipe 5, the connecting conduit 24, and the leak-proof sleeve 26, and then the hot air flow is ejected from the nozzle 14. When the wind turbine blades rotate, under the action of gravity, the rolling ball 9 can move with the rotation of the blades, and then the rolling ball 9 drives the limiting ring 10 to move, so that the two connecting rods 11 drive the two connecting racks 16 to move, and then the two connecting gears 15 all rotate, thereby making the front rotating air column 12 and the rear rotating air column 13 drive the nozzle 14 to rotate, and the wind turbine blades continue to rotate, so that the rolling ball 9 can reciprocate, and then the connecting rack 16 can reciprocate, and the connecting gear 15 can rotate forward and reverse, so that the hot air flow ejected by the nozzle 14 can be quickly and evenly blown onto the outer surfaces of the upper mold blade 1 and the lower mold blade 2, so that the ice and snow attached to the outer sides of the upper mold blade 1 and the lower mold blade 2 are melted under the action of the hot air flow, so that the wind turbine blades will not be frozen by the attachment of ice and snow, so that the wind turbine blades can operate normally, and other equipment can also operate normally.
[0059] Since the nozzles 14 are inclined toward the outer surfaces of the upper mold blade 1 and the lower mold blade 2, the hot air flow blown out by the nozzles 14 can blow along the outer surfaces of the upper mold blade 1 and the lower mold blade 2, and the hot air flow blown out by the nozzles 14 in a rotating state can make the hot air flow contact more ice and snow, so that the ice and snow melt faster, thereby improving the snow-melting ability of the wind turbine blades, preventing the wind turbine blades from being affected by wind and snow, allowing the wind turbine blades to continue to rotate normally, and preventing the wind turbine set from being damaged.
[0060] When the wind turbine blades have been used for a long time under normal conditions, the outer parts of the upper mold blade 1 and the lower mold blade 2 will be contaminated with a lot of dust. By starting the heating pump 23, the nozzle 14 can be made to blow air to blow off the dust on the outer parts of the upper mold blade 1 and the lower mold blade 2, making the surface of the wind turbine blade cleaner. This eliminates the need for personnel to hang on the wind turbine blades for cleaning, thereby reducing the workload of personnel and improving the safety of wind turbine blade maintenance.
[0061] When the wind turbine blades rotate, the rolling ball 9 moves, so that the convex slider 19 can slide stably in the convex slide groove, and then the L-shaped reinforcement rod 21 pulls the connecting rod 11, so that the connecting rod 11 moves more stably, and the connecting rack 16 can more stably drive the connecting gear 15 to rotate, so that the wind turbine blades can clear external ice and snow more stably and melt snow faster. When the upper mold blade 1 and the lower mold blade 2 are in a vertical state, the convex slider 19 can contact the buffer spring 22, so that the buffer spring 22 is impacted by gravity and compressed. Under the action of the elastic deformation recovery force of the buffer spring 22, the impact force generated by the convex slider 19 is buffered, so that the wind turbine blades are more stable when rotating.
[0062] Through the root end web 4, the blade root end 3 can better withstand the torsional force generated by the upper mold blade 1 and the lower mold blade 2 during rotation, so that the wind turbine blade is more stable during rotation and the wind turbine blade will not be separated from the wind turbine set. The front support plate 6, the connecting card plate 8, the rear top plate 27, the front top plate 28, and the connecting card plate 8 can make the upper mold blade 1 and the lower mold blade 2 bonded more firmly, so that the upper mold blade 1 and the lower mold blade 2 are not easily damaged during rotation, and the service life of the wind turbine blade is extended.
[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A large wind turbine blade, comprising an upper mold blade (1), a lower mold blade (2) and a blade root end (3) mounted on one end of the upper mold blade (1) and the lower mold blade (2), characterized in that: A plurality of nozzles (14) are installed on the upper mold blade (1) and the lower mold blade (2), and the plurality of nozzles (14) are all inclined at a certain angle relative to the side walls of the upper mold blade (1) and the lower mold blade (2). A gravity drive component for providing power and a rotating unit for causing the nozzles (14) to rotate back and forth are installed on the side where the upper mold blade (1) and the lower mold blade (2) are close to each other, and the plurality of nozzles (14) are all installed on the rotating unit. A hot air transmission component for providing hot air is installed on the root end (3) of the blade, and the hot air transmission component is connected to the rotating unit. The rotating unit comprises two front top plates (28) and two rear top plates (27) respectively mounted on the sides of the upper mold blade (1) and the lower mold blade (2) close to each other, a front support plate (6) is mounted on the sides of the two front top plates (28) close to each other, a rear support plate (7) is mounted on the sides of the two rear top plates (27) close to each other, a connecting card plate (8) is mounted on the sides of the front support plate (6) and the rear support plate (7) close to each other, a front rotating air column (12) and a rear rotating air column (13) are rotatably mounted on the connecting card plate (8), a plurality of the nozzles (14) are respectively and evenly mounted on the side walls at both ends of the front rotating air column (12) and the side walls at both ends of the rear rotating air column (13), the gravity drive assembly is mounted on the side walls of the connecting card plate (8), and the front rotating air column (12) and the rear rotating air column (13) are both connected to the hot air transmission assembly; The hot gas transmission component comprises a root end web (4) mounted on the inner wall of the root end (3) of the blade, a heating pump (23) is mounted on the side wall of the root end web (4), a heat conduction pipe (5) is mounted on the output end of the heat pump (23), a fixing hole is opened on the side wall of the front support plate (6), the heat conduction pipe (5) is mounted on the inner wall of the fixing hole, and the front rotating air column (12) and the rear rotating air column (13) are connected to the heat conduction pipe (5) via an air guide sealing unit; A heat pump (23) generates a large amount of hot air flow through a hot air transmission component, and the hot air flow passes through a heat conducting pipe (5). The hot air flow is introduced into a front rotating air column (12) and a rear rotating air column (13) through an air conducting sealing unit, so that ice and snow on the wind turbine blades are melted; The gravity drive assembly comprises two L-shaped support rods (17) mounted on the side wall of the connecting card plate (8), a sliding bracket (18) is mounted on the top of the two L-shaped support rods (17), a convex sliding groove is provided on the side wall of the sliding bracket (18), a convex sliding block (19) is slidably mounted on the inner wall of the convex sliding groove, a pulling guide rod (20) is mounted on the side wall of the convex sliding block (19), and a limiting collar (10) is mounted on one end of the pulling guide rod (20), A rolling ball (9) is adapted to be installed on the inner wall of the limiting collar (10), two symmetrically arranged connecting rods (11) are installed on the side wall of the limiting collar (10), and connecting racks (16) are installed at the ends of the two connecting rods (11) that are away from each other, and connecting gears (15) are sleeved and installed on the front rotating air column (12) and the rear rotating air column (13), and the two connecting racks (16) are respectively meshed with the two connecting gears (15); The air guide sealing unit comprises leak-proof sleeves (26) which are respectively rotatably sleeved on the front rotating air column (12) and the rear rotating air column (13); the side walls of the two leak-proof sleeves (26) are provided with connection holes; the inner walls of the two connection holes are provided with connection guide tubes (24); the side wall of the leak-proof sleeve (26) located on the front rotating air column (12) is provided with a transmission hole; the heat conduction pipe (5) is installed on the inner wall of the transmission hole; the side walls of the front rotating air column (12) and the rear rotating air column (13) are provided with a plurality of evenly arranged air guide holes; the plurality of air guide holes located on the front rotating air column (12) and the plurality of air guide holes located on the rear rotating air column (13) are respectively located inside the two leak-proof sleeves (26); Buffer springs (22) are installed on two opposite inner walls of the convex sliding groove, and the two buffer springs (22) are in contact with the convex sliding block (19); L-shaped reinforcing rods (21) are installed on the side walls of the two connecting rods (11), and one end of the two L-shaped reinforcing rods (21) is installed on the side wall of the pulling guide rod (20); A pair of L-shaped clamping rods (25) are installed on the side walls of the two leak-proof sleeves (26), and one end of the two pairs of L-shaped clamping rods (25) are installed on the bottom of the connecting clamping plate (8).
2. A large wind turbine blade according to claim 1, characterized in that: The front rotating air column (12) and the rear rotating air column (13) are both rotatably mounted on the side walls of the upper mold blade (1) and the lower mold blade (2), and the multiple nozzles (14) on both ends of the front rotating air column (12) and the two ends of the rear rotating air column (13) are symmetrically arranged accordingly.
3. A large wind turbine blade according to claim 1, characterized in that: The inner diameters of the front rotating air column (12) and the rear rotating air column (13) are set to be the same, and the length of the front rotating air column (12) is set to be longer than the length of the rear rotating air column (13).