Wind turbine blade

Abstract

This invention provides a wind turbine blade, belonging to the field of wind power generation technology. The wind turbine blade of this invention includes: multiple wind turbine blade bodies, a support rod, and multiple ultrasonic de-icing components. The support rod is connected to the multiple wind turbine blade bodies, and each ultrasonic de-icing component is correspondingly disposed inside each wind turbine blade body to shake off ice and snow from the wind turbine blade body using the ultrasonic waves it generates. This invention, by incorporating ultrasonic de-icing components into the wind turbine blade body, achieves the purpose of removing snow accumulated on the wind turbine blade body through ultrasonic waves, thereby ensuring the normal operation of the wind turbine blade body. This snow removal method saves energy compared to traditional methods, is energy-efficient and environmentally friendly, and requires no additional energy consumption.

Description

Technical Field

[0001] This invention belongs to the field of wind power generation technology, and specifically relates to a wind turbine blade. Background Technology

[0002] Wind turbine blades capture wind energy and convert it into mechanical energy through their unique aerodynamic shape. As the components of wind turbine generators that capture wind energy, wind turbine blades play a crucial role in wind turbine units. However, wind turbine blades are often affected by external factors during operation, such as snow accumulation and debris. Prolonged accumulation of these materials can damage the blades and consequently affect the operation of the wind power equipment.

[0003] One existing technology, Chinese patent (CN107676221B), discloses a wind turbine blade in which the inner wall of the blade body is connected to the outer edge of the blade root baffle by multiple elastic connection structures spaced apart. An elastic filler material layer is provided at the locations between the inner wall of the blade body and the outer edge of the blade root baffle where no elastic connection structure is connected. Each elastic connection structure includes an elastic connector, a first adhesive layer, and a second adhesive layer. The elastic connector has a first connecting surface and a second connecting surface corresponding to the inner wall of the blade body and the outer edge of the blade root baffle, respectively, with the width of the first connecting surface being greater than the width of the second connecting surface. The first adhesive layer is bonded between the first connecting surface and the inner wall of the blade body. The second adhesive layer is bonded between the second connecting surface and the outer edge of the blade root baffle. This design avoids excessively high stress levels in localized areas of the blade root baffle, improving the safety of the wind turbine blade and the wind turbine on which it is installed. Furthermore, the amount of adhesive used is relatively small, further reducing the cost of the wind turbine blade. However, the wind turbine blade does not have the function of clearing snow in actual use, which results in a large amount of snow adhering to the outer wall of the blade body in rainy or snowy weather. This snow accumulation increases the weight of the wind turbine blade, making it easy for the blade to break, resulting in economic losses and making it very unfavorable for normal use.

[0004] Therefore, there is a need to develop a new type of self-cleaning wind turbine blade with a de-icing mechanism. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and to provide a wind turbine blade.

[0006] This invention provides a wind turbine blade, comprising:

[0007] Multiple wind turbine blades,

[0008] The support rod is connected to the main body of the plurality of wind turbine blades.

[0009] Multiple ultrasonic de-icing components are provided, each of which is disposed inside each wind turbine blade body, so as to shake off the ice and snow on the wind turbine blade body by generating ultrasonic waves.

[0010] Optionally, the ultrasonic de-icing assembly includes an ultrasonic generator, a transducer, a mounting ring, an amplitude transformer, and an ultrasonic diffuser; wherein,

[0011] The ultrasonic generator is fixed on the side of the wind turbine blade body facing the support rod, and the transducer, the mounting ring, the amplitude transformer and the ultrasonic diffuser are sequentially arranged on the side of the ultrasonic generator away from the support rod.

[0012] Optionally, at least one resonant plate is provided along the length of the wind turbine blade body, and the diffusion direction of the ultrasonic diffuser is toward the resonant plate.

[0013] Optionally, the number of resonant plates is multiple, and the multiple resonant plates are arranged in parallel with each other.

[0014] Optionally, it also includes multiple mounting components, each of which is correspondingly disposed on the side of each wind turbine blade body facing the support rod; and,

[0015] The top of the support rod is provided with a wind turbine housing, one end of which is connected to a positioning pin. A wind turbine installation turntable is sleeved on the outer wall of the positioning pin, and each of the installation components is provided on the outer wall of the wind turbine installation turntable.

[0016] Optionally, the mounting component has at least one mounting hole on the side opposite to the wind turbine blade body.

[0017] Optionally, a rotating positioning shaft is provided at the end of the wind turbine installation turntable away from the positioning pin shaft. Multiple brackets are fixedly connected to the outer wall of the rotating positioning shaft, and a snow removal plate corresponding to the main body of the wind turbine blade is connected to the end of each bracket away from the rotating positioning shaft.

[0018] Optionally, a rotating bearing disc is further provided between the support rod and the fan housing; and / or,

[0019] A generator is installed inside the wind turbine casing, and the generator is fixedly connected to the wind power installation turntable via a generator shaft passing through the positioning pin.

[0020] Optionally, a resonator is also provided on the side wall near the top of the support rod, and the resonance direction of the resonator is opposite to the rotation path of the wind turbine blade body.

[0021] Optionally, the wind turbine blade body includes a corrosion-resistant collection shell and a reinforcing support layer.

[0022] The reinforcing support layer forms an internal cavity.

[0023] This invention provides a wind turbine blade, comprising: multiple wind turbine blade bodies, a support rod connected to the multiple wind turbine blade bodies, and multiple ultrasonic de-icing components. Each ultrasonic de-icing component is correspondingly disposed inside each wind turbine blade body to shake off ice and snow from the wind turbine blade body using ultrasonic waves generated therein. This invention, by incorporating ultrasonic de-icing components within the wind turbine blade body, achieves the purpose of removing accumulated snow from the blade body using ultrasonic waves, thereby ensuring the normal operation of the wind turbine blade body. This snow removal method is more energy-efficient and environmentally friendly than traditional methods, requiring no additional energy consumption. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a wind turbine blade according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a wind turbine blade body according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the internal structure of the wind turbine blade body according to another embodiment of the present invention;

[0027] Figure 4 For the present invention Figure 1 A magnified view of a portion of point A in the middle. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0029] Unless otherwise specifically stated, the technical or scientific terms used in this invention should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The terms "comprising" or "including," as used in this invention, do not limit the shapes, numbers, steps, actions, operations, components, elements, and / or groups thereof mentioned, nor do they exclude the appearance or inclusion of one or more other different shapes, numbers, steps, actions, operations, components, elements, and / or groups thereof. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number and order of the indicated technical features.

[0030] In some descriptions of the invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," or "fixing" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect through an intermediate medium, which can be the internal connection of two elements or the interaction between two elements. Furthermore, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] like Figures 1 to 4 As shown, this invention provides a wind turbine blade, comprising: multiple wind turbine blade bodies 1, a support rod 2, and an ultrasonic de-icing assembly. The support rod 2 is connected to the multiple wind turbine blade bodies 1, and each ultrasonic de-icing assembly is correspondingly disposed inside each wind turbine blade body to dislodge ice and snow from the wind turbine blade body using the ultrasonic waves it generates. In other words, each wind turbine blade body is equipped with a corresponding ultrasonic de-icing assembly to remove accumulated snow from the wind turbine blade body, achieving a self-cleaning function.

[0032] This embodiment uses an ultrasonic de-icing component, or de-icing mechanism, installed in the main body of the wind turbine blade to shake off the snow accumulated on the main body of the wind turbine blade through ultrasonic waves, thereby achieving the purpose of snow removal and ensuring the normal operation of the main body of the wind turbine blade. This method of snow removal saves electricity compared to traditional methods, is energy-saving and environmentally friendly, and does not require the consumption of additional energy.

[0033] Specifically, such as Figure 3 As shown, the ultrasonic de-icing assembly of this embodiment includes an ultrasonic generator 6, a transducer 7, a mounting ring 8, an amplitude transformer 9, and an ultrasonic diffuser 10. The ultrasonic generator 6 is fixedly mounted on the side of the wind turbine blade body 1 facing the support rod 2. The transducer 7, mounting ring 8, amplitude transformer 9, and ultrasonic diffuser 10 are sequentially arranged on the side of the ultrasonic generator 6 away from the support rod 2. That is, the end of the transducer 7 away from the ultrasonic generator 6 is fixedly mounted on the side of the mounting ring 8, the other side of the mounting ring 8 is fixedly connected to one end of the amplitude transformer 9, and the other end of the amplitude transformer 9 is fixedly connected to the ultrasonic diffuser 10, so that the ultrasonic waves are diffused through the ultrasonic diffuser.

[0034] It should be noted that this embodiment does not specifically limit the type of transducer, such as piezoelectric transducers, magnetostrictive transducers, electromagnetic acoustic transducers, and laser transducers. Those skilled in the art can select according to actual needs.

[0035] For example, the transducer selected in this embodiment is a PZT transducer.

[0036] Furthermore, such as Figure 3 As shown, at least one resonant plate 5 is provided along the length of the wind turbine blade body 1, and the diffusion direction of the ultrasonic diffuser 10 is toward the resonant plate 5, so as to use ultrasonic waves to vibrate the wind turbine blade body.

[0037] In this embodiment, by activating an ultrasonic generator, ultrasonic waves are generated and diffused through an ultrasonic diffuser. After snow accumulates on the outer wall of the wind turbine blade, the ultrasonic generator is activated, and the ultrasonic waves generated by the generator can shake off the snow, thereby ensuring the normal operation of the wind turbine blade and increasing power generation.

[0038] For example, such as Figure 3 As shown, in this embodiment, there are multiple resonant plates 5, which are arranged in parallel to each other, that is, multiple resonant plates are arranged in parallel along the length direction of the wind turbine blade body.

[0039] It should be noted that the wind turbine blade body in this embodiment includes a corrosion-resistant acquisition shell and a reinforcing support layer, wherein the reinforcing support layer forms an internal cavity. That is to say, the wind turbine blade body has a cavity structure, with an outer corrosion-resistant acquisition shell, an inner reinforcing support layer, the aforementioned resonant plate wrapped around the cavity wall, and the ultrasonic de-icing assembly disposed within the cavity.

[0040] It should be further noted that the corrosion-resistant collection shell in this embodiment is mirror-finished to increase surface smoothness and prevent corrosion.

[0041] It should be noted that this embodiment does not specifically limit the connection method between the wind turbine blade body and the support rod. As long as the connection can be achieved and the wind turbine blade body can rotate freely with the wind, the two can be directly connected or connected through other connecting parts.

[0042] Specifically, such as Figures 1 to 4As shown, the wind turbine blade in this embodiment also includes multiple mounting components 3, each mounting component 3 being disposed on the side of each wind turbine blade body 1 facing the support rod 2. Furthermore, a wind turbine housing 12 is disposed at the top of the support rod 2, and a positioning pin 13 is rotatably connected to one end of the wind turbine housing 12 via a ball bearing. A wind turbine installation turntable 14 is fixedly sleeved on the outer wall of the positioning pin 13, and each mounting component 3 is disposed on the outer wall of the wind turbine installation turntable 14. In other words, each wind turbine blade body is provided with one mounting component, and multiple wind turbine blade bodies are respectively fixed to the wind turbine installation turntable by multiple mounting components.

[0043] It should be noted that this embodiment does not specify the installation method of the wind power installation turntable and the installation components, such as bonding method, snap-on method, and bolt fixing method.

[0044] Specifically, in some other preferred examples, the mounting component has at least one mounting hole on the side facing away from the wind turbine blade body.

[0045] For example, such as Figure 2 As shown, the blade mounting component 3 has multiple mounting holes 4 (e.g., mounting pin holes) arranged in a circular pattern at the end away from the wind turbine blade body 1. In this way, the mounting component is fixed to the wind turbine mounting turntable by passing a pin through the mounting holes.

[0046] Optional, such as Figure 1 As shown, a rotating bearing disk 11 is also provided between the support rod 2 and the wind turbine casing 12. The top of the rotating bearing disk is provided with the wind turbine casing, so that the wind turbine casing and the main body of the wind turbine blades can rotate with the wind direction through the rotating bearing disk.

[0047] In addition, in order to further remove the accumulated ice and snow, such as Figure 1 As shown, a rotating positioning shaft 17 is provided at the end of the wind turbine installation turntable 14 away from the positioning pin shaft 13. Multiple brackets 18 are fixedly connected to the outer wall of the rotating positioning shaft 17. Each bracket 18 is connected to a snow removal plate 19 corresponding to the wind turbine blade body 1 at the end opposite to the rotating positioning shaft 17. In other words, each wind turbine blade body is provided with a snow removal plate that cooperates with it to remove snow accumulated on the wind turbine blade body, which is equivalent to using a scraper to remove ice and snow.

[0048] In this embodiment, when the wind turbine blade is blown by the wind, it will rotate based on the mounting component. The snow on the side of the rotating wind turbine blade away from the wind turbine casing will come into contact with the snow removal plate. As the wind turbine blade rotates, the snow will come into contact with and rub against the snow removal plate, thereby achieving the purpose of clearing the snow. This method of clearing snow has the purpose of saving energy compared to the traditional method, and it is energy-saving and environmentally friendly, without consuming additional energy.

[0049] Furthermore, such as Figure 1 and Figure 4 As shown, a generator 15 is installed inside the wind turbine 12. The generator 15 is fixedly connected to the wind turbine installation turntable 14 via a generator shaft 16 that passes through a positioning pin 13. In other words, the generator includes a generator shaft, and the end of the generator shaft away from the generator passes through the positioning pin and is fixedly connected to the inner core of the wind turbine installation turntable.

[0050] Optional, such as Figure 1 As shown, a resonator 20 is also provided on the side wall near the top of the support rod 2. The resonance direction of the resonator 20 is directly opposite to the rotation path of the wind turbine blade body 1.

[0051] Based on the above structure, the specific usage process of the wind turbine blade in this embodiment is as follows, in conjunction with... Figures 1 to 4 As shown, firstly, an ultrasonic de-icing assembly is installed, which includes an ultrasonic transmitter 6, a transducer 7, a mounting ring 8, an amplitude transformer 9, and an ultrasonic diffuser 10. The ultrasonic transmitter 6 is fixedly connected to the inner wall of the wind turbine blade body 1, and the transducer 7 is fixedly connected to the ultrasonic transmitter 6. The end of the transducer 7 away from the ultrasonic transmitter 6 is fixedly set on one side of the mounting ring 8, and the other side of the mounting ring 8 is fixedly connected to one end of the amplitude transformer 9. The other end of the amplitude transformer 9 is fixedly connected to the ultrasonic diffuser 10. The diffusion direction of the ultrasonic diffuser 10 is relative to the resonant plate 5. When the ultrasonic transmitter 6 is activated, it will generate ultrasonic waves, which can be diffused through the ultrasonic diffuser 10. After snow accumulates on the outer wall of the wind turbine blade body 1, the ultrasonic transmitter 6 is activated, and the ultrasonic waves generated by the ultrasonic transmitter 6 can shake off the snow, thereby ensuring the normal operation of the wind turbine blade body 1 and increasing power generation. Then, through the snow removal plate 19, in actual use, the wind turbine blade body 1 will rotate based on the blade mounting end 3 after being blown by the wind. The snow on the side of the rotating wind turbine blade body 1 away from the wind turbine casing 12 will come into contact with the snow removal plate 19. As the wind turbine blade body 1 rotates, the snow will come into contact with and rub against the snow removal plate 19. Through the scraping of the snow removal plate 19, the purpose of clearing the snow is achieved. This method of clearing snow has the purpose of saving energy compared with the traditional method, and it is energy-saving and environmentally friendly, without consuming additional energy.

[0052] This invention provides a wind turbine blade, which has the following advantages compared to the prior art:

[0053] First, the wind turbine blade of the present invention is equipped with an ultrasonic de-icing component. Ultrasonic waves are generated by an ultrasonic transmitter and diffused through an ultrasonic diffuser. When snow accumulates on the outer wall of the wind turbine blade body, the ultrasonic transmitter is activated. The ultrasonic waves generated by the ultrasonic transmitter can shake off the snow, thereby ensuring the normal operation of the wind turbine blade body and increasing power generation.

[0054] Secondly, the wind turbine blades of the present invention are equipped with snow removal plates. In actual use, after the wind turbine blade body is blown by the wind, it will rotate based on the blade mounting end. The snow on the side of the rotating wind turbine blade body away from the wind turbine casing will come into contact with the snow removal plate. As the wind turbine blade body rotates, the snow will come into contact with and rub against the snow removal plate. Through the scraping of the snow removal plate, the purpose of clearing the snow is achieved. This method of clearing snow has the purpose of saving energy compared with the traditional method, and it is energy-saving and environmentally friendly, without consuming additional energy.

[0055] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A wind turbine blade, characterized in that, include: Multiple wind turbine blades, The support rod is connected to the main body of the plurality of wind turbine blades. Multiple ultrasonic de-icing components are provided, each of which is disposed inside each wind turbine blade body to shake off ice and snow from the wind turbine blade body through ultrasonic waves generated thereon. It also includes multiple mounting components, each of which is correspondingly disposed on the side of each wind turbine blade body facing the support rod; and, The top of the support rod is provided with a fan housing, one end of the fan housing is connected to a positioning pin, and a wind power installation turntable is sleeved on the outer wall of the positioning pin. Each of the installation components is provided on the outer wall of the wind power installation turntable. The wind turbine installation turntable has a rotating positioning shaft at one end away from the positioning pin. Multiple brackets are fixedly connected to the outer wall of the rotating positioning shaft. Each bracket has a snow removal plate corresponding to the main body of the wind turbine blade at one end away from the rotating positioning shaft.

2. The wind turbine blade according to claim 1, characterized in that, The ultrasonic de-icing assembly includes an ultrasonic generator, a transducer, a mounting ring, an amplitude transformer, and an ultrasonic diffuser; wherein... The ultrasonic generator is fixed on the side of the wind turbine blade body facing the support rod, and the transducer, the mounting ring, the amplitude transformer and the ultrasonic diffuser are sequentially arranged on the side of the ultrasonic generator away from the support rod.

3. The wind turbine blade according to claim 2, characterized in that, At least one resonant plate is provided along the length of the wind turbine blade body, and the diffusion direction of the ultrasonic diffuser is toward the resonant plate.

4. The wind turbine blade according to claim 3, characterized in that, The number of resonant plates is multiple, and the multiple resonant plates are arranged in parallel with each other.

5. The wind turbine blade according to claim 1, characterized in that, The mounting component has at least one mounting hole on the side opposite to the main body of the wind turbine blade.

6. The wind turbine blade according to claim 1, characterized in that, A rotary bearing disc is also provided between the support rod and the fan casing; and / or, A generator is installed inside the wind turbine casing, and the generator is fixedly connected to the wind power installation turntable via a generator shaft passing through the positioning pin.

7. The wind turbine blade according to any one of claims 1 to 4, characterized in that, A resonator is also provided on the side wall near the top of the support rod, and the resonance direction of the resonator is directly opposite to the rotation path of the wind turbine blade body.

8. The wind turbine blade according to any one of claims 1 to 4, characterized in that, The wind turbine blade body includes a corrosion-resistant collection shell and a reinforcing support layer, wherein the reinforcing support layer forms an internal cavity.

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