CN117365825A - Blade and wind generating set - Google Patents

Abstract

The application relates to a blade and wind generating set, the blade is applied to wind generating set, and the blade includes blade body and vibration suppression part. The blade body has the surface, and the vibration suppression part sets up on the surface, and the axial that vibration suppression part followed the blade body extends, and vibration suppression part has initial state and shrinkage state, and vibration suppression part can be in initial state and shrinkage state between the conversion. The vibration suppressing component expands to a first volume and can disturb airflow in an initial state so as to suppress vibration of the blade body, and can shrink to a second volume in a shrinkage state, wherein the first volume is larger than the second volume. According to the embodiment of the application, the vibration problem and the installation interference problem during blade installation can be solved, so that the installation efficiency is improved, and the safety and reliability are guaranteed.

Description

Blades and wind turbines

Technical field

The present application relates to the field of wind power technology, and in particular to a blade and a wind turbine generator set.

Background technique

With the continuous development of wind power technology, more requirements have been put forward for wind turbines. For example, in the design of blades, not only should priority be given to reducing cost and weight, but also how to improve the efficiency and safety of blade hoisting should be considered.

However, during the hoisting process of existing blades, due to blade vibration, safety risks may occur when the bolts are connected to the hub, resulting in low installation efficiency. Moreover, when a clamp is used to lift the blade, interference occurs between the clamp and the vortex generator installed on the blade, causing the vortex generator to be damaged or fail and unable to work properly.

Contents of the invention

Embodiments of the present application provide a blade and a wind power generator set that can solve the vibration problem and installation interference problem when the blade is installed, thereby improving the installation efficiency and ensuring safety and reliability.

On the one hand, according to the embodiment of the present application, a blade is proposed, which is applied to a wind turbine generator, including: a blade body having an outer surface; a vibration suppression component disposed on the outer surface, and the vibration suppression component extends along the axial direction of the blade body, The vibration suppression component has an initial state and a contraction state, and the vibration suppression component can switch between the initial state and the contraction state; wherein, in the initial state, the vibration suppression component expands to the first volume and can disturb the airflow to suppress the vibration of the blade body, In the contracted state, the vibration suppression component can contract to a second volume, and the first volume is larger than the second volume.

According to one aspect of the embodiment of the present application, the vibration suppression component includes a connecting seat and a flexible body. The connecting seat is connected to the outer surface. In the initial state, the flexible body is expanded and set, and in the contracted state, the flexible body deforms and contracts.

According to one aspect of the embodiment of the present application, the flexible body has a solid structure and is made of memory material; alternatively, the flexible body has a film layer structure, and the flexible body and the connecting seat form an accommodation cavity. In the initial state, the accommodation cavity is filled with The gas expands to the first volume, and in the contracted state, the gas is discharged from the accommodation chamber to contract to the second volume.

According to one aspect of the embodiment of the present application, the vibration suppression component includes a ventilation hole, and the ventilation hole is communicated with the accommodation cavity to switch the vibration suppression component between an initial state and a contracted state.

According to one aspect of the embodiment of the present application, it also includes a ventilation duct, which is arranged inside the blade body. The outer surface of the blade body is provided with a through hole. One end of the ventilation duct extends from the through hole and communicates with the ventilation hole. The accommodation cavity passes through the ventilation hole. and the ventilation ducts are filled with gas and vented with gas.

According to an aspect of the embodiment of the present application, a storage tank is further included, which is disposed inside the blade body and connected to the ventilation pipe. The storage tank is configured to provide gas to the accommodation cavity through the ventilation pipe and store the gas.

According to one aspect of the embodiment of the present application, the storage tank is filled with a predetermined gas, or the storage tank is filled with a reactive substance that can generate gas, and the reactive substance can generate gas under a predetermined pressure.

According to one aspect of the embodiment of the present application, in the initial state, the side of the flexible body facing away from the connecting seat is arranged in a concave and convex manner along the axial direction.

According to one aspect of the embodiment of the present application, the flexible body includes two or more protrusions, the two or more protrusions are distributed along the axial direction, a recess is formed between two adjacent protrusions, and the protrusion height of at least one protrusion is Greater than the bulge height of another bulge.

According to one aspect of the embodiment of the present application, the blade further includes an adapter component, and the vibration suppression component is detachably connected to the outer surface of the blade body through the adapter component.

According to one aspect of the embodiment of the present application, the adapter component includes a fitting body and a guide wire. The guide wire is connected to one of the fitting body and the vibration suppression component. The guide wire has a power-off state and a power-on state; in the power-off state, the vibration suppression component The vibration component is connected to the outer surface of the blade body through the fitting body; in the energized state, the guide wire can introduce current and act on the fitting body, so that the vibration suppression component is separated from the outer surface of the blade body.

According to one aspect of the embodiment of the present application, the fitting body includes a magnet, wherein, in the power-off state, the vibration suppression component is magnetically connected to the outer surface of the blade body through the magnet; in the power-on state, the guide wire introduces current to the magnet and loses its magnetic attraction. So that the vibration suppression component is separated from the outer surface of the blade body; alternatively, the fitting body includes a first connecting glue layer, wherein in the power-off state, the vibration suppressing component is adhesively connected to the outer surface of the blade body through the first connecting glue layer; in In the energized state, the guide wire introduces current to the first connecting glue layer and loses its viscosity, so that the vibration suppression component is separated from the outer surface of the blade body.

According to one aspect of the embodiment of the present application, the blade body further includes a lightning receptor and a storage. The storage is connected to the lightning receptor and the guide wire. The storage is configured to obtain the current converted by the lightning receptor for converting Current within a preset range is delivered to the lead wire.

According to one aspect of the embodiment of the present application, the adapter component includes a second connecting glue layer and a connecting pipe. One end of the connecting pipe extends into the interior of the blade body, and the other end is connected to one of the second connecting glue layer and the vibration suppression component. , the connecting pipe is configured to transport the gas that reacts with the second connecting glue layer to the second connecting glue layer to lose its viscosity, so that the vibration suppression component is separated from the outer surface of the blade body.

According to one aspect of the embodiment of the present application, the vibration suppression components further include connecting cables. The number of the vibration suppressing components is set to two or more. The two or more vibration suppressing components are connected through the connecting cables and are spaced apart along the axial direction of the blade body. .

According to one aspect of the embodiment of the present application, the blade body includes a blade root portion, a middle portion and a blade tip portion distributed along the axial direction, and the vibration suppression component is provided on at least one of the middle portion and the blade tip portion.

On the other hand, according to an embodiment of the present application, a wind turbine generator set is proposed, including: a hub; and the above-mentioned blades are connected to the hub.

The embodiments of the present application provide blades and wind turbines. The blades include a blade body and a vibration suppression component. The vibration suppression component is disposed on the outer surface of the blade body and extends along the axial direction of the blade body. The vibration suppression component has an initial state and a contracted state. and can switch between the two states. During the installation process of the blade, at least part of the vibration suppression component can be placed in an initial state, which can expand to the first volume and disturb the airflow to suppress vibration problems generated by the blade body during the installation process, and can effectively reduce the vibration amplitude of the blade body. , to improve installation efficiency and safety. Moreover, when the clamp clamps and fixes the blade, at least part of the vibration suppression component can also be placed in a contracted state, which can shrink from the first volume to the second volume, so as to avoid interference problems with other clamps and other tools during the installation process. At the same time, it can avoid damage or even failure of vibration suppression components, reduce the number of replacements and the difficulty of maintenance, thereby reducing costs and improving reliability. In addition, when the blades are in service, the vibration suppression components are in the initial state to disturb the airflow to increase power generation.

Description of the drawings

The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

Figure 1 is a schematic structural diagram of a wind turbine generator according to an embodiment of the present application;

Figure 2 is a schematic structural diagram of a blade according to an embodiment of the present application;

Figure 3 is a schematic structural diagram of the vibration suppression component in the blade in an initial state according to one embodiment of the present application;

Figure 4 is a schematic structural diagram of the vibration suppression component in the blade in a contracted state according to an embodiment of the present application;

Figure 5 is a partial structural schematic diagram of a blade when being clamped by a clamp according to an embodiment of the present application;

Figure 6 is an enlarged structural schematic diagram of position P in Figure 5;

Figure 7 is a partial structural diagram of a blade according to another embodiment of the present application;

Figure 8 is a schematic structural diagram of the vibration suppression component in the blade in an initial state according to another embodiment of the present application;

Figure 9 is a schematic structural diagram of the vibration suppression component in the blade in a contracted state according to another embodiment of the present application;

Figure 10 is a schematic structural diagram of the vibration suppression component in the blade in an initial state according to another embodiment of the present application;

Figure 11 is a schematic structural diagram of the vibration suppression component in the blade in a contracted state according to another embodiment of the present application;

Figure 12 is a partial structural diagram of a blade according to another embodiment of the present application;

Figure 13 is a partial structural schematic diagram of a blade according to yet another embodiment of the present application;

Figure 14 is a partial structural diagram of a blade according to another embodiment of the present application.

in:

100-blade; 1-blade body; 1a-leaf root; 1b-middle part; 1c-blade tip; 11-outer surface; 2-vibration suppression component; 21-connecting seat; 22-flexible body; 221-protrusion ; 222-recess; 2a-containing cavity; 23-ventilation hole; 24-connecting cable; 3-ventilation pipe; 4-storage tank;

5-Transfer component; 51-fitting body; 52-guide wire; 53-second connecting glue layer; 54-connecting pipe; 6-lightning air-termination device;

200-tower; 300-nacelle; 310-generator; 400-impeller; 110-hub.

S0-initial state; S1-shrinking state

X-axis direction.

Detailed ways

Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the present application; and, the dimensions of some structures may be exaggerated for clarity. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

The directional words appearing in the following description are the directions shown in the figures and do not limit the blades and wind turbines of the present application. In the description of this application, it should also be noted that, unless otherwise clearly stated and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or Connected integrally; either directly or indirectly. For those of ordinary skill in the art, the specific meanings of the above terms in this application may be understood based on specific circumstances.

In order to better understand the present application, the blades and wind turbine generators according to the embodiments of the application will be described in detail below with reference to FIGS. 1 to 14 .

Please refer to Figure 1. Figure 1 is a schematic structural diagram of a wind turbine set according to an embodiment of the present application. This embodiment of the present application provides a wind turbine set, which includes a hub 110 and blades 100. The blades 100 are connected to the hub 110. Of course, the wind turbine also includes a tower 200, a nacelle 300, and a generator 310. The tower 200 is connected to the wind turbine foundation, the nacelle 300 is disposed at the top of the tower 200, and the generator 310 is disposed in the nacelle 300. In some examples, the generator 310 can be located outside the nacelle 300. Of course, in some examples, the generator 310 It can also be located inside the cabin 300. Among them, the whole body after multiple blades 100 are connected to the hub 110 can be called an impeller 400. The impeller 400 is connected to the rotating shaft of the generator 310 through its hub 110. When wind force acts on the blades 100, the entire impeller 400 and the rotating shaft of the generator are driven to rotate. , to convert wind energy into electrical energy.

During the installation process of the blade 100, the tip portion of the blade 100 usually swings with the wind, causing the blade bolts to be unable to effectively connect with the hub 110, which increases the operator's work difficulty and safety risks, thereby lengthening the installation time. Moreover, during the installation process, the installation work of the blade 100 is often completed with the help of a clamp. The clamp can clamp the blade 100 and lift it to a specified height, flip and translate the blade 100, and finally connect the blade 100 to the hub 110. together. Existing blades 100 are often equipped with a vortex generator (Vortex generator, VG) on their outer surface 11 to increase power generation during the service life of the blade 100. During the installation process of the blade 100, the clamp is often clamped at the position of the vortex generator. As a result, the clamped vortex generator is damaged or fails, so that when the blade 100 enters the service stage after the installation is completed, the clamped vortex generator cannot operate normally, causing a loss of power generation, and if the operator performs maintenance on it and Replacement will also increase the difficulty of working at heights and bring safety risks.

Based on the above defects, the embodiment of the present application provides a blade 100. The blade 100 can reduce the vibration amplitude during installation, improve the installation efficiency, and at the same time avoid interference with the clamp, ensuring safety and reliability. When the blade 100 is in service, It can better increase the power generation capacity.

Referring to FIGS. 2 to 6 , an embodiment of the present application provides a blade 100 , which is applied to a wind turbine generator and includes a blade body 1 and a vibration suppression component 2 . The blade body 1 has an outer surface 11 . The vibration suppression component 2 is disposed on the outer surface 11. The vibration suppression component 2 extends along the axial direction X of the blade body 1. The vibration suppression component 2 has an initial state S0 and a contracted state S1. The vibration suppression component 2 can be in the initial state S0 and the contracted state. Convert between S1. Among them, in the initial state S0, the vibration suppression component 2 expands to a first volume and can disturb the air flow to suppress the vibration of the blade body 1. In the contracted state S1, the vibration suppression component 2 can shrink to a second volume, and the first volume is larger than the second volume. Two volumes.

The vibration suppression component 2 is disposed on the outer surface 11 of the blade body 1 and extends along the axial direction X of the blade body 1 . The "axial extension" means that the blade body 1 has a hollow cavity, and the The direction from one end to the other end can be called the axial direction side, it only needs to be satisfied that the vibration suppression components 2 are arranged in the extension direction of the connecting line. Alternatively, the vibration suppression component 2 can be provided in the axial direction X of the blade body 1 along a straight line, a curve or a multi-part fold line.

During the installation process of the blade 100, the part of the vibration suppression component 2 that is not set at the clamping position can be in the initial state S0, that is, it can expand to the first volume to create a disturbance effect on the air flow and prevent the vibration of the blade body 1 from causing damage. Danger, reduce the amplitude of vibration of the blade body 1, thereby improving installation efficiency and safety.

Please refer to Figures 5 and 6. When the blade body 1 is lifted by a clamp, the part of the vibration suppression component 2 provided corresponding to the position of the clamp can be converted to the contracted state S1, that is, the vibration suppression component 2 can shrink from the first volume to the second volume. Two volumes are used to adapt to the clamping of the fixture and avoid interference with the fixture causing it to be crushed or fail, thereby reducing the number of replacements and maintenance difficulty, reducing costs and improving reliability.

When the blade 100 enters the service stage after installation, the vibration suppression component 2 in the contracted state S1 can be converted to the initial state S0, that is, when the clamp no longer clamps the blade body 1, the vibration suppression component 2 can expand from the second volume to The first volume uses disturbed airflow to increase power generation.

Because the blade 100 provided in the embodiment of the present application includes the vibration suppression component 2 that can be converted between the initial state S0 and the contracted state S1, so that it can achieve different functions at different stages and improve the flexibility of use. Among them, the blade 100 provided by the embodiment of the present application can not only reduce the vibration amplitude of the blade 100 during the installation process to improve the installation efficiency and safety, but also avoid interference with the clamp. Therefore, the vibration suppression component 2 can replace the existing eddy current generator to effectively increase the power generation capacity during the service of the blade 100.

Referring to FIG. 7 , optionally, the number of vibration suppression components 2 can be set to one, and of course, can also be set to two or more.

When the number of the vibration suppressing components 2 is set to one, it may include a long strip shape extending along the axial direction X. At least part of the long strip shape can be in the initial state S0 and at least part of it can be in the contracted state S1.

When the number of vibration suppressing components 2 is set to two or more, they can be extended and distributed at intervals along the axial direction Change of state.

The blade body 1 can be divided into a blade root portion 1a, a middle portion 1b and a blade tip portion 1c that are distributed and connected along the axial direction Location. The blade tip 1 c refers to the position of the blade body 1 farthest from the hub 110 . The middle part 1b refers to the position between the blade root part 1a and the blade tip part 1c, including the abdomen position of the blade body 1.

Please continue to refer to Figures 2 to 6. In some optional embodiments, the blade body 1 includes a blade root portion 1a, a middle portion 1b and a blade tip portion 1c distributed along the axial direction X, and the vibration suppression component 2 is provided at the middle portion 1b and on at least one of the blade tip portion 1c.

Alternatively, the vibration suppression component 2 may be provided at the middle part 1b, of course, it may also be provided at the blade tip part 1c, or the vibration suppression component 2 may be provided at both the middle part 1b and the blade root part 1a.

When installing the blade 100, its tip portion 1c is most susceptible to interference and vibration problems. Therefore, in some optional embodiments, the vibration suppression component 2 can be disposed on the outer surface 11 of the tip portion 1c of the blade body 1 and Extending along the axial direction It is convenient for the operator to dock the blade root 1a of the blade body 1 with the hub 110, thereby improving the installation efficiency of the blade 100 and reducing the safety risks of the operator's hoisting operation.

When a clamp is used to clamp the blade body 1, the clamp is often clamped at the middle portion 1b of the blade body 1. Therefore, in some optional embodiments, the vibration suppression component 2 can be disposed at the middle portion 1b of the blade body 1. On the outer surface 11 and extending along the axial direction Shrink to the second volume to prevent the clamp from interfering with the vibration suppression component 2 and prevent the vibration suppression component 2 from being clamped by the clamp, thereby reducing the number of operator maintenance times and reducing maintenance costs and manufacturing costs.

In some optional embodiments, the vibration suppression component 2 can be disposed on the middle portion 1b of the blade body 1 and the outer surface 11 of the blade tip portion 1c and extend along the axial direction X. During the installation process of the blade 100, it is located at the blade tip. The vibration suppression component 2 in the part 1c is in the initial state S0 to suppress the vibration of the blade tip 1c and reduce the swing amplitude of the blade tip 1c. The vibration suppression component 2 located in the middle part 1b is in the contracted state S1 to avoid vibration suppression. Part 2 is damaged by the clamp. When the blade 100 enters the service state after being installed, the vibration suppression component 2 located at the middle part 1b can be converted to the initial state S0 to increase the power generation, and the vibration suppression component 2 located at the blade tip 1c can be in the initial transition state, and the vibration suppression component 2 located in the middle part can be in the initial transition state. The vibration suppression components 2 at the blade tip 1c work together to increase the power generation. Of course, the vibration suppression components 2 at the blade tip 1c can also be converted to the contracted state S1, and can be designed according to actual needs. This application is not limited to this.

Please continue to refer to Figures 3 and 4. In some optional embodiments, the vibration suppression component 2 includes a connecting seat 21 and a flexible body 22. The connecting seat 21 is connected to the outer surface 11. In the initial state S0, the flexible body 22 is expanded. , in the contracted state S1, the flexible body 22 deforms and contracts.

The flexible body 22 is disposed on the side of the connecting seat 21 away from the blade body 1 and is connected to the outer surface 11 of the blade body 1 through the connecting seat 21 .

Optionally, the connecting base 21 can be a rigid connecting base 21, and of course, can also be configured as a flexible connecting base 21. Optionally, the number of the connecting base 21 can be set to one or multiple. One connecting base 21 can be connected to multiple flexible bodies 22 , and one connecting base 21 can also be provided corresponding to one flexible body 22 .

In the initial state S0, the flexible body 22 expands to the first volume setting, that is, the end of the flexible body 22 facing away from the outer surface 11 is at a certain distance from the outer surface 11, so that it can disturb the airflow and suppress the vibration and lifting of the blade body 1. The role of power generation.

In the contracted state S1, the flexible body 22 can deform and shrink, that is, the end of the flexible body 22 that is at least partially away from the outer surface 11 moves in a direction close to the blade body 1, so that it shrinks to a second volume smaller than the first volume.

By arranging the vibration suppression component 2 to include a connecting seat 21 and a flexible body 22 , the vibration suppressing component 2 can be connected to the outer surface 11 of the blade body 1 through the connecting seat 21 , thereby improving the connection reliability and preventing the vibration suppressing component 2 from being damaged. The risk of falling due to loose connection with the outer surface 11 of the blade body 1 .

Moreover, the connecting seat 21 can receive the force of deformation contraction and deformation expansion of the flexible body 22, preventing this force from acting directly on the outer surface 11 of the blade body 1, causing the outer surface 11 to be uneven or even causing damage to the blade body 1. question.

In some alternative embodiments, the flexible body 22 has a solid structure and is made of memory material.

The flexible body 22 can be provided as a solid structure made of memory material. Memory material means that it can automatically deform from the initial state S0 to the contraction state S1 after being subjected to a predetermined pressure, such as being clamped by a clamp. In the initial state S0, the vibration of the blade 100 can be effectively prevented and the power generation amount can be increased.

Optionally, the solid structure includes one of a sponge body and a rubber body. Of course, it may also include other structures, as long as it can transform between the initial state S0 and the contracted state S1.

As an optional embodiment, the flexible body 22 may also have a film layer structure. The flexible body 22 and the connection base 21 are enclosed to form an accommodation cavity 2a. In the initial state S0, the accommodation cavity 2a is filled with gas to expand to the first volume, in the contracted state S1, the gas is discharged from the accommodation chamber 2a to contract to the second volume.

Alternatively, the flexible body 22 can be configured as a film layer structure made of memory material. Optionally, the flexible body 22 can be configured as a deformable air bag structure, which can automatically deform after being clamped by a clamp and convert from the initial state S0 to the contracted state S1. This can automatically occur when there is no pressure, for example, after the clamp relaxes. The deformation is converted from the contraction state S1 to the initial state S0, which can effectively prevent the vibration of the blade 100 and increase the power generation.

Moreover, the flexible body 22 and the connecting seat 21 are enclosed to form an accommodation cavity 2a. When the accommodation cavity 2a is inflated and expanded and deflated, the force exerted by the flexible body 22 on the connecting seat 21 can be reduced, thereby improving the reliability of the connecting seat 21. properties and improve the service life of the vibration suppression component 2.

Please refer to Figures 8 and 9. In some optional embodiments, the vibration suppression component 2 includes a ventilation hole 23, and the ventilation hole 23 is connected with the accommodation cavity 2a, so that the vibration suppression component 2 is in the initial state S0 and the contracted state S1. switch between.

It can be understood that the first volume and the second volume refer to the volume of the accommodation cavity 2a.

Optionally, the ventilation hole 23 can be provided on the flexible body 22 to communicate with the accommodation cavity 2a. Of course, the ventilation hole 23 can also be provided through the connection base 21 to communicate with the accommodation cavity 2a.

Gas can enter or be discharged from the vibration suppression component 2 through the vent hole 23, so that the vibration suppression component 2 can switch between the initial state S0 and the contracted state S1. When the gas in the vibration suppression component 2 is discharged from the ventilation hole 23 to the outside of the accommodation cavity 2a, so that the vibration suppression component 2 transforms from the initial state S0 to the contracted state S1, when the vibration suppression component 2 moves from the ventilation hole 23 to the outside of the accommodation cavity 2a When gas is inhaled, the vibration suppressing member 2 is converted from the contracted state S1 to the initial state S0.

Through the above arrangement, the state of the vibration suppression component 2 can be adjusted by inhaling and exhausting air through the ventilation hole 23, which is simple to operate and improves convenience.

Please refer to Figures 10 and 11. In some optional embodiments, the blade 100 also includes a ventilation duct 3, which is arranged inside the blade body 1. The outer surface 11 of the blade body 1 is provided with a through hole. One end of the ventilation duct 3 The through hole extends out and communicates with the ventilation hole 23 , and the accommodation cavity 2 a is filled with gas and exhausted through the ventilation hole 23 and the ventilation pipe 3 .

The ventilation duct 3 is arranged inside the blade body 1. One end of the ventilation duct 3 communicates with the ventilation hole 23 through the hole opened in the blade body 1, so as to inflate the accommodation cavity 2a or receive the gas discharged from the accommodation cavity 2a, so as to suppress vibration. The component 2 is capable of switching between an initial state S0 and a contracted state S1.

Through the above arrangement, the ventilation duct 3 is arranged inside the blade body 1, which not only ensures that the state of the vibration suppression component 2 can be adjusted, but also avoids the ventilation duct 3 being arranged on the outer surface 11 of the blade body 1, causing any interference with the flow through the outer surface 11. Airflow issues.

Optionally, the other end of the ventilation pipe 3 can be connected to a pump in the hub 110 to provide gas to the accommodation chamber 2a and receive gas. Optionally, the other end of the ventilation pipe 3 can also be connected to a manual pump, an electric pump, an air compressor and other equipment, which is not limited in this application.

Please refer to Figure 12. In some optional embodiments, the blade 100 further includes a storage tank 4, which is disposed inside the blade body 1 and connected to the ventilation duct 3. The storage tank 4 is configured to pass through the ventilation duct 3 to the accommodation cavity 2a. Provide gas and store gas.

The other end of the ventilation pipe 3 can also be connected to the storage tank 4 provided inside the blade body 1 to provide gas to the accommodation cavity 2a and receive gas.

Alternatively, the storage tank 4 can be made of rigid material, and of course, can also be made of flexible material.

Through the above arrangement, it is possible to ensure the effectiveness of the vibration suppression component 2 in changing states through charging and exhausting, thereby improving reliability.

In some optional embodiments, the storage tank 4 is filled with a predetermined gas, wherein the gas filled in the storage tank 4 cannot exceed the maximum capacity of the storage tank 4 to avoid damage or even failure.

As an optional implementation, the storage tank 4 is filled with a reactive substance that can generate gas, and the reactive substance can generate gas under a predetermined pressure.

Optionally, the reaction substances may include acidic liquid and alkaline powder, wherein the acidic liquid may be diluted hydrochloric acid, and the alkaline powder may be sodium bicarbonate. When the blade body 1 is vibrated by the air flow, the acidic liquid and alkali The organic powder fuses and reacts to produce carbon dioxide gas. This gas flows into the accommodation cavity 2a of the vibration suppression component 2 through the ventilation pipe 3, allowing it to expand to the first volume to prevent the vibration of the blade 100 and increase the power generation. When the blade body 1 does not shake or the shaking is not strong, the reaction substances in the storage tank 4 will not come into contact and react.

Optionally, the storage tank 4 can be provided with multiple storage chambers and reaction chambers with through holes. Reactive substances capable of generating gas are placed in the storage chambers, and can partially flow into the reaction chamber through the through holes to generate gas when in contact. .

When the reaction material in the storage tank 4 is used up, the storage tank 4 only needs to be replaced or the reaction material is filled again, which is convenient for operation.

Through the above arrangement, it is possible to ensure the effectiveness of the vibration suppression component 2 in changing states through charging and exhausting, thereby improving reliability.

Please continue to refer to FIGS. 2 to 12 . In some optional embodiments, in the initial state S0 , the side of the flexible body 22 away from the connecting seat 21 is arranged in a concave and convex manner along the axial direction X.

It can be understood that the flexible body 22 can be configured to have a structure similar to an airfoil shape, that is, the side of the flexible body 22 away from the connecting seat 21 is concave and convex along the axial direction X, so as to have a better airflow spoiling effect. Optionally, the side of the flexible body 22 away from the connecting seat 21 may be in a dovetail shape along the axial direction X, and of course may also be provided in other concave and convex shapes.

Through the above arrangement, the side of the flexible body 22 away from the connecting seat 21 is provided in a concave and convex shape along the axial direction weather, thereby increasing the service life of the vibration suppression component 2, and better achieving the effects of preventing vibration of the blade body 1 and increasing power generation.

Specifically, the shape and structure of the flexible body 22 can be designed based on the aerodynamic simulation calculation results to design the shape and structure of the flexible body 22 that can most effectively disturb the airflow.

In some optional embodiments, the flexible body 22 includes two or more protrusions 221 , the two or more protrusions 221 are distributed along the axial direction X, and a recess 222 is formed between two adjacent protrusions 221 .

Optionally, the flexible body 22 may include two protrusions 221, and of course, may also include multiple protrusions 221.

For example, when the vibration-suppressing component 2 is provided as a whole strip, its flexible body 22 may be provided to include a plurality of protrusions 221 and a plurality of recesses 222 . When the number of vibration suppressing components 2 is set to two or more, its flexible body 22 may be configured to include two protrusions 221 and one recess 222 .

Optionally, the protrusion height of each protrusion 221 can be the same, of course, it can also be set to be different, or it can also be set so that the protrusion height of at least one protrusion 221 is greater than the protrusion height of the other protrusion 221. The shape can be set according to actual needs, and this application does not limit this.

Through the above arrangement, it can better cope with the flow of airflow, so that the vibration suppression component 2 is suitable for various severe strong wind weather, thereby increasing the service life of the vibration suppression component 2 and better achieving the prevention of the blade body 1 Vibration and the effect of increasing power generation.

In order to suppress vibration problems during installation of the existing blades 100, a mesh is often used to cover the blade tip 1c before installation. However, the mesh is easily damaged or fails, and it is difficult to install it on the blade 100. operate. Moreover, when the blade 100 is installed and the mesh is to be disassembled, the blade 100 must be rotated until it remains in a vertical position before it can be pulled down vertically. This disassembly operation not only risks damaging the blade 100, but also increases the number of operations. It is difficult for people to work at heights and poses safety risks. In addition, when the blade 100 is used in an onshore wind turbine, the mesh may easily fall off the bottom surface, causing safety problems. Alternatively, when the blade 100 is used in an offshore wind turbine, the mesh may easily fall into the sea, causing marine pollution problems. .

Therefore, based on the above defects, please refer to Figure 13. The blade 100 provided by the embodiment of the present application also includes an adapter component 5. The vibration suppression component 2 is detachably connected to the outer surface 11 of the blade body 1 through the adapter component 5.

By providing the adapter component 5, the vibration suppression component 2 can be detachably connected to the blade body 1, thereby improving the disassembly efficiency, reducing the difficulty of disassembly and ensuring safety.

Optionally, the vibration suppression component 2 can be made of degradable materials, such as new nanomaterials or biological materials, to prevent it from falling into the sea and polluting the environment, ensuring its sustainable development, and enabling lightweight design. , convenient for mass production.

In some optional embodiments, the adapter component 5 includes a fitting body 51 and a guide wire 52. The guide wire 52 is connected to one of the fitting body 51 and the vibration suppression component 2. The guide wire 52 has a power-off state and a power-on state. . In the power-off state, the vibration suppression component 2 is connected to the outer surface 11 of the blade body 1 through the fitting body 51 . In the energized state, the guide wire 52 can introduce current and act on one of the fitting body 51 and the vibration suppression component 2 , so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1 .

Alternatively, the fitting body 51 may be provided on the outer surface 11 of the blade body 1 , and the vibration suppression component 2 is connected to the outer surface 11 through the fitting body 51 .

The guide wire 52 is connected to one of the fitting body 51 and the vibration suppressing component 2 . Alternatively, the guide wire 52 can be connected to the fitting body 51 , and of course, can also be connected to the vibration suppressing component 2 .

Exemplarily, the guide wire 52 is connected to the fitting body 51 . The guide wire 52 has a power-off state and a power-on state. In the power-off state, the vibration suppression component 2 is connected to the outer surface 11 of the blade body 1 through the fitting body 51, so that it can prevent the blade 100 from vibrating and increase the power generation. In the energized state, the guide wire 52 can introduce current to act on the fitting body 51 to separate the vibration suppression component 2 from the outer surface 11 of the blade body 1 , thereby achieving the purpose of disassembling the vibration suppression component 2 .

Alternatively, the adapter component 5 can be connected to the vibration suppression component 2 of the blade tip portion 1c, of course, can also be connected to the vibration suppression component 2 of the middle portion 1b, and of course, can also be connected to all the vibration suppression components 2.

For example, the adapter component 5 can be connected to the vibration suppression component 2 of the blade tip 1c, that is, the fitting body 51 is provided on the outer surface 11 of the blade tip 1c. After the blade 100 is hoisted, the vibration suppression component 2 of the blade tip 1c is removed by switching the state through the guide wire 52, while the vibration suppression component 2 of the middle portion 1b is still connected to the outer surface 11 of the blade body 1, so that the blade 100 is in service. Increase power generation.

Of course, the adapter component 5 can be connected to the vibration suppression component 2 of the middle part 1b. When there is a need for replacement or other needs, it can be flexibly disassembled to reduce the difficulty of the operation. Through the above arrangement, the connection relationship between the adapter component 5 and the vibration suppression component 2 can be designed according to one's own needs, which can improve the flexibility of use and improve the versatility of the blade 100.

In some optional embodiments, the fitting body 51 includes a magnet, wherein, in the power-off state, the vibration suppression component 2 is magnetically connected to the outer surface 11 of the blade body 1 through the magnet. In the energized state, the guide wire 52 introduces current until the magnet loses its magnetic attraction, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1;

Alternatively, the fitting body 51 can be configured as a magnet, and the connecting seat 21 can be configured as a metal material that can be attracted by the magnet. The two can generate magnetic attraction to install the vibration suppression component 2 on the outer surface 11 of the blade body 1 . Of course, the fitting body 51 can also be configured as a metal material that can be attracted by magnets, and the connecting base 21 can be configured as a magnet, which is not limited in this application.

Optionally, the magnet includes at least one of an electromagnet and a permanent magnet. Optionally, metal materials that can be attracted by magnets include iron, nickel, cobalt, etc.

For example, the fitting body 51 is arranged in the form of a magnet on the outer surface 11 of the blade body 1 , and the guide wire 52 is connected to the magnet. When the guide wire 52 is in the power-off state, the metal connection base 21 is magnetically connected to the magnet. When the guide wire 52 is in the power-on state, current is transmitted from the guide wire 52 to the magnet, so that the magnet loses its magnetic attraction. The connection base 21 and The magnets are separated to separate the vibration suppression component 2 from the outer surface 11 of the blade body 1, thereby achieving the purpose of disassembling the vibration suppression component 2. It can be understood that when the lead wire 52 is connected to the connection base 21 of metal material, in the energized state, the current can be transmitted from the lead wire 52 to the connection base 21, and then transmitted from the connection base 21 to the fitting body 51 to cause it to be lost. Magnetic attraction.

Through the above arrangement, the installation and disassembly of the vibration suppression component 2 on the outer surface 11 of the blade body 1 is facilitated, and the operation is convenient. It can also improve the connection strength between the vibration suppression component 2 and the outer surface 11 and prevent the vibration suppression component 2 from falling due to failure of connection and causing safety problems. problems and pollution problems, further improving safety and reliability.

As an optional embodiment, the fitting body 51 includes a first connection glue layer, wherein in the power-off state, the vibration suppression component 2 is adhesively connected to the outer surface 11 of the blade body 1 through the first connection glue layer. In the energized state, the guide wire 52 introduces current to the first connecting glue layer to lose its viscosity, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1 .

For example, glue bonding may be used to bond the vibration suppression component 2 to the outer surface 11 of the blade body 1 . When the guide wire 52 is in the power-off state, the vibration suppression component 2 is adhesively connected to the outer surface 11 of the blade body 1 through the first connecting glue layer. When the guide wire 52 is in the power-on state, current can be transmitted to the first connection through the guide wire 52 The glue layer is used to make the connecting glue layer lose its viscosity, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1, thereby achieving the purpose of disassembling the vibration suppression component 2.

Optionally, the first connecting adhesive layer may include hot melt adhesive material, and of course, may also be configured as colloid of other materials.

Through the above arrangement, the installation and disassembly of the vibration suppression component 2 on the outer surface 11 of the blade body 1 is facilitated, and the operation is convenient. It can also improve the connection strength between the vibration suppression component 2 and the outer surface 11 and prevent the vibration suppression component 2 from falling due to failure of connection and causing safety problems. problems and pollution problems, further improving safety and reliability.

In some optional embodiments, the blade 100 further includes a lightning receptor 6 and a storage. The storage is connected to the lightning receptor 6 and the guide wire 52 . The storage is configured to obtain the current converted by the lightning receptor 6 , used to deliver current within a preset range to the guide wire 52 .

Alternatively, the lightning receptor 6 can be disposed on the outer surface 11 of the blade body 1, and the reservoir can also be disposed on the outer surface 11 of the blade body 1. The lightning receptor 6 and the guide wire 52 are connected through the reservoir.

Among them, the lightning receptor 6 is used to receive lightning strikes to obtain current. At least part of this current can be stored in a storage. When the vibration suppression component 2 needs to be disassembled, the storage only needs to be controlled to release current within a preset range. It has been passed to the guide line 52.

Through the above arrangement, the current converted by the lightning strike received by the lightning air-termination device 6 can be effectively utilized, which can reduce the cost and make it easy to obtain. It can also facilitate the disassembly of the vibration suppression component 2 and improve the disassembly efficiency.

Optionally, the guide wire 52 can also be directly connected to the power distribution device in the hub 110 to obtain current within a preset range.

Please refer to Figure 14. In some optional embodiments, the adapter component 5 includes a second connecting glue layer 53 and a connecting pipe 54. One end of the connecting pipe 54 extends into the interior of the blade body 1, and the other end is connected to the second connection pipe 54. One of the glue layer 53 and the vibration suppression component 2 , the connection pipe 54 is configured to transport the gas that reacts with the second connection glue layer 53 to the second connection glue layer 53 to lose its viscosity, so that the vibration suppression component 2 and the blade body 1 The outer surface 11 is separated.

The adapter component 5 may also include a second connecting glue layer 53 and a connecting pipe 54. One end of the connecting pipe 54 is located inside the blade body 1, and the other end is connected to the second connecting glue layer 53 through a via hole outside the blade body. The connecting pipe 54 can transmit the gas that reacts with the second connecting glue layer 53 until the second connecting glue layer 53 loses its viscosity, causing the vibration suppressing component 2 to separate from the outer surface 11 of the blade body 1 , thereby achieving the purpose of disassembling the vibration suppressing component 2 .

Optionally, the second connection layer may include a hot-melt material, and the connection pipe 54 can transmit low-temperature nitrogen to the hot-melt material, causing its volume to shrink and fall off the outer surface 11 of the blade body 1 , so that the vibration suppression component 2 is connected to the blade body 1 The outer surface 11 is separated, thereby achieving the purpose of disassembling the vibration suppression component 2.

Optionally, the second connecting glue layer 53 can be made of the same material as the first connecting glue layer. Of course, it can also be made of different materials. It only needs to be ensured that it can make the vibration suppression component 2 and the outer surface 11 of the blade body 1 The connection requirements are sufficient.

Optionally, when the adapter component 5 includes the second connecting glue layer 53 and the connecting pipe 54, the adapter component 5 can also include the first connecting glue layer and the guide wire 52. It can be understood that the two disassembly methods can be simultaneously Yes, the specific disassembly method is as mentioned above and will not be described again here.

In some optional embodiments, the vibration suppression components 2 also include connecting cables 24 , and the number of the vibration suppressing components 2 is set to two or more. The two or more vibration suppressing components 2 are connected through the connecting cables 24 and extend along the blade body 1 axially spaced distribution in the X direction.

The vibration suppression component 2 also includes a connecting cable 24. When the vibration suppression component 2 needs to be disassembled, the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1 through the adapter component 5. At this time, the connecting cable 24 is pulled. The vibration suppressing component 2 can be recycled and is easy to manufacture. Moreover, since the vibration suppression component 2 is connected to the connecting cable 24, the risk of the vibration suppression component 2 falling can be prevented, thereby avoiding environmental pollution or safety issues.

By providing the connecting cable 24, when the vibration suppressing component 2 is disassembled, the operator can pull the other end of the connecting cable 24 to fully recover the vibration suppressing component 2 to prevent the vibration suppressing component 2 from falling after being separated from the blade body 1. It can also avoid the risk of operators performing recycling operations at high altitudes. Moreover, the recovered vibration suppressing component 2 can also be reused, which can reduce costs and achieve versatility.

Alternatively, one end of the connecting cable 24 can be connected to the vibration suppression component 2, and the other end can extend into the wheel hub 110. The operator can recover the vibration suppressing component 2 by pulling the other end of the connecting cable 24.

The number of vibration suppressing components 2 can be set to two, and of course, can also be set to multiple. When the connecting cable 24 is connected to two or more vibration suppressing components 2 , the two or more vibration suppressing components 2 can be connected in series through one connecting cable 24 . Of course, the connecting cable 24 can also include multiple sub-connecting cables 24 , one end of the plurality of sub-connection cables 24 is respectively connected to a vibration suppression component 2, and the other end is collectively connected to the connection cables 24.

Setting the number of vibration-suppressing components 2 to two or more is just an optional example. In some embodiments, the number of vibration-suppressing components 2 can also be set to one. When there is one vibration suppression component 2, one end of the connecting cable 24 is directly connected to one vibration suppression component 2 to recover it.

Optionally, the connecting cable 24 can be connected to the flexible body 22 of the vibration suppression component 2 . Of course, the connecting cable 24 can also be connected to the connecting seat 21 . Illustratively, the connecting cable 24 is connected to the connecting seat 21 to prevent the flexible body 22 from directly contacting the connecting cable 24 and prevent it from being pulled to cause failure or even damage, thereby increasing the service life of the flexible body 22 and facilitating its better implementation. The turbulent airflow function is used to better prevent vibration of the blade body 1 and increase power generation. In addition, connecting the connecting cable 24 to the connecting seat 21 can also bring the connecting cable 24 closer to the outer surface 11 of the blade body 1 to reduce its impact on the airflow flowing through the outer surface 11 .

An embodiment of the present application also provides a wind turbine generator set, including a hub 110 and the above-mentioned blades 100, connected to the hub 110.

Since the blade 100 provided in the embodiment of the present application has the function of preventing vibration and increasing the power generation, the wind turbine set having the blade 100 can improve the installation efficiency and have better operating efficiency.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for components thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (17)

1. A blade (100), used in wind turbines, characterized by including: The blade body (1) has an outer surface (11); A vibration suppression component (2) is provided on the outer surface (11). The vibration suppression component (2) extends along the axial direction (X) of the blade body (1). The vibration suppression component (2) Having an initial state (S0) and a contracted state (S1), the vibration suppression component (2) can switch between the initial state (S0) and the contracted state (S1); Wherein, in the initial state (S0), the vibration suppression component (2) expands to the first volume and can disturb the air flow to suppress the vibration of the blade body (1). In the contracted state (S1), The vibration suppression component (2) can shrink to a second volume, and the first volume is larger than the second volume. 2. The blade (100) according to claim 1, characterized in that the vibration suppression component (2) includes a connecting seat (21) and a flexible body (22), the connecting seat (21) is connected to the On the outer surface (11), in the initial state (S0), the flexible body (22) is expanded and set, and in the contracted state (S1), the flexible body (22) deforms and shrinks. 3. The blade (100) according to claim 2, characterized in that the flexible body (22) has a solid structure and is made of memory material; or, The flexible body (22) has a membrane structure, and the flexible body (22) and the connecting seat (21) form an accommodation cavity (2a). In the initial state (S0), the accommodation cavity (2a) (2a) is filled with gas to expand to the first volume, and in the contracted state (S1), the gas is discharged from the accommodation chamber (2a) to contract to the second volume. 4. The blade (100) according to claim 3, characterized in that the vibration suppression component (2) includes a ventilation hole (23), and the ventilation hole (23) is connected with the accommodation cavity (2a), So that the vibration suppression component (2) switches between the initial state (S0) and the contracted state (S1). 5. The blade (100) according to claim 4, further comprising a ventilation duct (3) disposed inside the blade body (1), and the outer surface of the blade body (1) (11) There is a through hole. One end of the ventilation pipe (3) extends from the through hole and communicates with the ventilation hole (23). The accommodation cavity (2a) passes through the ventilation hole (23) and The ventilation pipe (3) is filled with gas and exhausts gas. 6. The blade (100) according to claim 5, further comprising a storage tank (4) disposed inside the blade body (1) and connected to the ventilation duct (3), the The storage tank (4) is configured to provide gas to the accommodation chamber (2a) through the ventilation pipe (3) and to store gas. 7. The blade (100) according to claim 6, characterized in that the storage tank (4) is filled with a predetermined gas, or the storage tank (4) is filled with a reactive substance capable of generating gas. The reaction mass is capable of producing gas under a predetermined pressure. 8. The blade (100) according to claim 2, characterized in that, in the initial state (S0), the side of the flexible body (22) away from the connecting seat (21) extends along the axis. Set concave and convex toward (X). 9. The blade (100) according to claim 8, characterized in that the flexible body (22) includes two or more protrusions (221), and the two or more protrusions (221) are along the Distributed in the axial direction (X), a recess (222) is formed between two adjacent protrusions (221). 10. The blade (100) according to claim 2, characterized in that the blade (100) further includes an adapter component (5), and the vibration suppression component (2) passes through the adapter component (5) Detachably connected to the outer surface (11) of the blade body (1). 11. The blade (100) according to claim 10, characterized in that the adapter component (5) includes a fitting body (51) and a guide wire (52), the guide wire (52) is connected to the One of the matching body (51) and the vibration suppression component (2), the guide wire (52) has a power-off state and a power-on state; in the power-off state, the vibration suppression component (2) passes through The fitting body (51) is connected to the outer surface (11) of the blade body (1); in the energized state, the guide wire (52) can introduce current and act on the fitting body (51) ) and one of the vibration suppression component (2), so that the vibration suppression component (2) is provided separately from the outer surface (11) of the blade body (1). 12. The blade (100) according to claim 11, characterized in that the matching body (51) includes a magnet, wherein in the power-off state, the vibration suppression component (2) communicates with the magnet through the magnet. The outer surface (11) of the blade body (1) is magnetically connected; in the energized state, the guide wire (52) introduces current to the magnet to lose its magnetic attraction, so that the vibration suppression component ( 2) Separate from the outer surface (11) of the blade body (1); or, The fitting body (51) includes a first connecting glue layer, wherein in the power-off state, the vibration suppression component (2) passes through the first connecting glue layer and the outer surface of the blade body (1). The surface (11) is adhesively connected; in the energized state, the guide wire (52) introduces current to the first connecting glue layer to lose its viscosity, so that the vibration suppression component (2) and the blade body ( The outer surface (11) of 1) is separated. 13. The blade (100) according to claim 11, characterized in that the blade body (1) further includes a lightning receptor (6) and a storage, the storage is connected to the lightning receptor (6) and the guide wire (52), the storage is configured to obtain the current converted by the lightning receptor (6) for delivering the current within a preset range to the guide wire (52). 14. The blade (100) according to claim 10, characterized in that the adapter component (5) includes a second connecting glue layer (53) and a connecting pipe (54), and the connecting pipe (54) One end extends into the interior of the blade body (1), and the other end is connected to one of the second connecting glue layer (53) and the vibration suppression component (2). The connecting pipe (54) is configured In order to transmit the gas that reacts with the second connecting glue layer (53) to the second connecting glue layer (53) to lose its viscosity, so that all the connections between the vibration suppression component (2) and the blade body (1) The outer surface (11) is separated. 15. The blade (100) according to any one of claims 1 to 14, characterized in that the vibration suppression components (2) further include connecting cables (24), and the number of the vibration suppression components (2) is set Two or more vibration suppression components (2) are connected through the connecting cables (24) and are spaced apart along the axial (X) direction of the blade body (1). 16. The blade (100) according to claim 15, characterized in that the blade body (1) includes a blade root portion (1a), a middle portion (1b) and a blade tip distributed along the axial direction (X) part (1c), and the vibration suppression component (2) is provided on at least one of the middle part (1b) and the blade tip part (1c). 17. A wind turbine generator set, characterized in that it includes: hub(110); The blade (100) according to any one of the above claims 1 to 16, connected to the hub (110).