Blades and wind turbines

Abstract

The present application relates to a blade and a wind turbine generator set. The blade is applied to a wind turbine generator set, and the blade includes a blade body and a vibration suppression component. The blade body has an outer surface, and the vibration suppression component is arranged on the outer surface. The vibration suppression component extends along the axial direction of the blade body. The vibration suppression component has an initial state and a contracted state, and the vibration suppression component can switch between the initial state and the contracted state. In the initial state, the vibration suppression component expands to a first volume and can disturb the airflow to suppress the vibration of the blade body. In the contracted state, the vibration suppression component can shrink to a second volume, and the first volume is larger than the second volume. The embodiments of the present application can solve the vibration problem and the installation interference problem when the blade is installed, thereby improving the installation efficiency and ensuring safety and reliability.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to a blade and a wind turbine generator set. Background Art

[0002] With the continuous development of wind power technology, more requirements are put forward for wind turbines. For example, in the design of blades, priority should be given not only to reducing costs and weight, but also to improving the efficiency and safety of blade lifting.

[0003] However, during the installation of existing blades, the vibration of the blades may cause safety risks when the bolts are connected to the hub, resulting in low installation efficiency. In addition, when the blades are lifted with a clamp, interference occurs between the clamp and the vortex generators installed on the blades, causing the vortex generators to be damaged or fail, and unable to work normally. Summary of the invention

[0004] The embodiments of the present application provide a blade and a wind turbine generator set, which can solve the vibration problem and installation interference problem during blade installation, thereby improving installation efficiency and ensuring safety and reliability.

[0005] On the one hand, according to an embodiment of the present application, a blade is proposed for use in a wind turbine generator set, comprising: a blade body having an outer surface; a vibration suppression component arranged on the outer surface, the vibration suppression component extending along the axial direction of the blade body, the vibration suppression component having an initial state and a contracted state, and the vibration suppression component can switch between the initial state and the contracted state; wherein, in the initial state, the vibration suppression component expands to a first volume and can disrupt airflow to suppress vibration of the blade body, and in the contracted state, the vibration suppression component can contract to a second volume, and the first volume is larger than the second volume.

[0006] According to one aspect of an 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 an initial state, the flexible body is expanded, and in a contracted state, the flexible body is deformed and contracted.

[0007] According to one aspect of an embodiment of the present application, the flexible body is a solid structure and is made of a memory material; or, the flexible body is a membrane structure, and the flexible body and the connecting seat enclose a accommodating cavity. In an initial state, the accommodating cavity is filled with gas to expand to a first volume, and in a contracted state, the gas is discharged from the accommodating cavity to shrink to a second volume.

[0008] According to one aspect of the embodiment of the present application, the vibration suppression component includes a vent hole, which is communicated with the accommodating cavity, so that the vibration suppression component can be switched between an initial state and a contracted state.

[0009] According to one aspect of an 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 out from the through hole and communicates with the ventilation hole. The accommodating cavity is filled with gas and exhausts gas through the ventilation hole and the ventilation duct.

[0010] According to one aspect of an embodiment of the present application, it also includes a storage tank, which is arranged inside the blade body and connected to the ventilation duct. The storage tank is configured to provide gas to the accommodating cavity through the ventilation duct and store the gas.

[0011] According to one aspect of an embodiment of the present application, the storage tank is filled with a predetermined gas, or the storage tank is filled with a reaction substance that can generate gas, and the reaction substance can generate gas under a predetermined pressure.

[0012] According to one aspect of the embodiment of the present application, in an initial state, a side of the flexible body facing away from the connecting seat is arranged in a concave-convex manner along the axial direction.

[0013] According to one aspect of an 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 protrusion height of another protrusion.

[0014] According to one aspect of an embodiment of the present application, the blade further includes a transition component, and the vibration suppression component is detachably connected to the outer surface of the blade body via the transition component.

[0015] According to one aspect of an 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, and the guide wire has a power-off state and a power-on state; in the power-off state, the vibration suppression component is connected to the outer surface of the blade body through the fitting body; in the power-on 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.

[0016] According to one aspect of an embodiment of the present application, the matching body includes a magnet, wherein, in a power-off state, the vibration suppression component is magnetically connected to the outer surface of the blade body through the magnet; in a power-on state, a guide wire introduces current until the magnet loses its magnetic attraction, so that the vibration suppression component is separated from the outer surface of the blade body; or, the matching body includes a first connecting adhesive layer, wherein, in a power-off state, the vibration suppression component is adhesively connected to the outer surface of the blade body through the first connecting adhesive layer; in a power-on state, a guide wire introduces current until the first connecting adhesive layer loses its viscosity, so that the vibration suppression component is separated from the outer surface of the blade body.

[0017] According to one aspect of an embodiment of the present application, the blade body also includes a lightning arrester and a storage device, the storage device is connected to the lightning arrester and the guide wire, and the storage device is configured to obtain the current converted by the lightning arrester for transferring the current within a preset range to the guide wire.

[0018] According to one aspect of an embodiment of the present application, the transition component includes a second connecting adhesive 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 the second connecting adhesive layer and one of the vibration-suppressing component. The connecting pipe is configured to transmit gas that reacts with the second connecting adhesive layer until the second connecting adhesive layer loses its viscosity, thereby separating the vibration-suppressing component from the outer surface of the blade body.

[0019] According to one aspect of an embodiment of the present application, the vibration suppression component further includes a connecting rope, the number of the vibration suppression components is set to two or more, and the two or more vibration suppression components are connected by the connecting rope and are spaced apart along the axial direction of the blade body.

[0020] According to one aspect of an 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 arranged on at least one of the middle portion and the blade tip portion.

[0021] On the other hand, according to an embodiment of the present application, a wind turbine generator set is proposed, including: a hub; and blades such as those described above, connected to the hub.

[0022] The blade and wind turbine generator set provided by the embodiment of the present application, the blade includes a blade body and a vibration suppression component, the vibration suppression component is arranged 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 be switched between the two states. During the installation process of the blade, at least part of the vibration suppression component can be placed in the initial state, which can expand to a first volume and turbulent airflow to suppress the vibration problem generated by the blade body during the installation process, and can effectively reduce the vibration amplitude of the blade body to improve the 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 to avoid interference with other tools such as clamps during the installation process, and can avoid damage or even failure of the vibration suppression component, can reduce the number of replacements and maintenance difficulties, thereby reducing costs and improving reliability. In addition, during the service process of the blade, the vibration suppression component is in the initial state, and the turbulent airflow is used to increase the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

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

[0025] Figure 2 This is a schematic diagram of the structure of a blade according to an embodiment of the present application;

[0026] Figure 3 This is a schematic structural diagram of a vibration suppression component in a blade in an embodiment of the present application in an initial state;

[0027] Figure 4 This is a schematic structural diagram of a vibration suppression component in a blade in an embodiment of the present application in a retracted state;

[0028] Figure 5 This is a schematic diagram of the local structure of a blade clamped by a clamp according to an embodiment of the present application;

[0029] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at P in the middle;

[0030] Figure 7 A schematic diagram of a partial structure of a blade according to another embodiment of the present application;

[0031] Figure 8 This is a schematic structural diagram of a vibration suppression component in a blade in another embodiment of the present application in an initial state;

[0032] Fig. 9 This is a schematic structural diagram of a vibration suppression component in a blade in another embodiment of the present application in a contracted state;

[0033] Fig.10 This is a schematic structural diagram of a vibration suppression component in a blade in an initial state according to another embodiment of the present application;

[0034] Fig.11 This is a schematic structural diagram of a vibration suppression component in a blade in a retracted state according to another embodiment of the present application;

[0035] Fig.12 A schematic diagram of a partial structure of a blade according to another embodiment of the present application;

[0036] Fig.13 This is a schematic diagram of the partial structure of a blade of another embodiment of the present application;

[0037] Fig.14 This is a schematic diagram of the partial structure of a blade according to another embodiment of the present application.

[0038] in:

[0039] 100-blade; 1-blade body; 1a-blade root; 1b-middle part; 1c-blade tip; 11-outer surface; 2-vibration damping component; 21-connecting seat; 22-flexible body; 221-protrusion; 222-recess; 2a-accommodating cavity; 23-ventilation hole; 24-connecting rope; 3-ventilation pipe; 4-storage tank;

[0040] 5-adapter; 51-matching body; 52-guide wire; 53-second connecting adhesive layer; 54-connecting pipe; 6-lightning arrester;

[0041] 200-tower; 300-nacelle; 310-generator; 400-impeller; 110-hub.

[0042] S0-initial state; S1-contracted state

[0043] X-axis direction. DETAILED DESCRIPTION

[0044] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0045] The directional words appearing in the following description are all directions shown in the figures, and do not limit the blades and wind turbines of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In order to better understand this application, Figures 1 to 14 The blades and wind turbine generator set according to the application embodiments are described in detail.

[0047] See also Figure 1 , Figure 1The structural diagram of a wind turbine generator set according to an embodiment of the present application is provided in the embodiment of the present application, and the wind turbine generator set includes a hub 110 and blades 100, and the blades 100 are connected to the hub 110. Of course, the wind turbine generator set 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 arranged at the top of the tower 200, and the generator 310 is arranged 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 can also be located inside the nacelle 300. Among them, the whole after the 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 the wind acts on the blade 100, the entire impeller 400 and the rotating shaft of the generator are driven to rotate to convert wind energy into electrical energy.

[0048] During the installation of the blade 100, the tip of the blade 100 usually swings with the wind, so that the blade bolt cannot be effectively docked with the hub 110, which increases the difficulty of the operator's operation and the safety risk, thereby prolonging the installation time. In addition, during the installation process, the installation of the blade 100 is often completed with the help of a clamp, which 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. The existing blade 100 often has a vortex generator (VG) on its outer surface 11 to increase the power generation during the service of the blade 100. During the installation of the blade 100, the clamp is often clamped at the position where the vortex generator is located, causing the clamped vortex generator to be damaged or failed, so that when the blade 100 is in the service stage after the installation is completed, the clamped vortex generator cannot operate normally, resulting in a loss of power generation, and if the operator maintains and replaces it, it will also increase the difficulty of high-altitude operations and bring safety risks.

[0049] Based on the above defects, an embodiment of the present application provides a blade 100, which can reduce the vibration amplitude during installation and improve the installation efficiency, while avoiding interference with the clamp to ensure safety and reliability. When the blade 100 is in service, it can better improve the power generation.

[0050] See also Figures 2 to 6A blade 100 provided in an embodiment of the present application is applied to a wind turbine generator set, 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 arranged on the outer surface 11, and 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, and the vibration suppression component 2 can switch between the initial state S0 and the contracted state S1. Among them, in the initial state S0, the vibration suppression component 2 expands to a first volume and can disturb the airflow 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.

[0051] The vibration suppression component 2 is arranged on the outer surface 11 of the blade body 1 and extends along the axial direction X of the blade body 1, wherein "axial X extension" means that the blade body 1 has a hollow cavity, and the direction from one end to the other end on its long axis can be called the axial direction X. The vibration suppression component 2 can be arranged on the connecting line from one end to the other end of the outer surface 11 of the blade body 1 along the long axis, and can also be arranged on both sides of the connecting line, as long as the vibration suppression component 2 is arranged in the extension direction of the connecting line. Optionally, the vibration suppression component 2 can be arranged on the axial direction X of the blade body 1 along a straight line, a curve or a multi-part fold line.

[0052] During the installation of the blade 100, the portion of the vibration suppression component 2 arranged at the non-clamping position can be in the initial state S0, that is, it can expand to the first volume to produce a turbulent effect on the airflow, prevent the danger caused by the vibration of the blade body 1, and reduce the vibration amplitude of the blade body 1, thereby improving the installation efficiency and safety.

[0053] See also Figure 5 and Figure 6 When the blade body 1 is lifted by the clamp, the portion of the vibration suppression component 2 corresponding to the position of the clamp can be converted into a contracted state S1, that is, the vibration suppression component 2 can be contracted from the first volume to the second volume to adapt to the clamping of the clamp, avoiding interference with the clamp that causes it to be crushed or fail, thereby reducing the number of replacements and the difficulty of maintenance, reducing costs and improving reliability.

[0054] When the blade 100 is installed and enters the service stage, 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 to disturb the airflow to achieve the effect of increasing power generation.

[0055] Since the blade 100 provided in the embodiment of the present application includes a vibration suppression component 2 which can be switched between the initial state S0 and the contracted state S1, so that it can achieve different functions at different stages, thereby improving the flexibility of use. Among them, the blade 100 provided in the embodiment of the present application can not only reduce the vibration amplitude of the blade 100 during installation to improve installation efficiency and safety, but also avoid interference with the clamp, so that the vibration suppression component 2 can replace the existing vortex generator to effectively increase the power generation during the service of the blade 100.

[0056] See also Figure 7 Optionally, the number of the vibration suppression components 2 can be set to one, and of course, can also be set to two or more.

[0057] When the number of the vibration suppression component 2 is set to one, it may include a long strip extending along the axial direction X, and at least part of the long strip can be in the initial state S0 and at least part of the long strip can be in the contracted state S1.

[0058] When the number of the vibration suppression components 2 is set to two or more, they can be distributed along the axial direction X at intervals, and at least a part of the vibration suppression components 2 can be in the initial state S0, and at least a part of the vibration suppression components 2 can be in the contracted state.

[0059] The blade body 1 can be divided into a blade root portion 1a, a middle portion 1b and a blade tip portion 1c which are connected in the axial direction X. The blade root portion 1a refers to the portion where the blade body 1 is connected to the hub 110, that is, the position closest to the hub 110. The blade tip portion 1c refers to the position of the blade body 1 farthest from the hub 110. The middle portion 1b refers to the position between the blade root portion 1a and the blade tip portion 1c, including the belly position of the blade body 1.

[0060] Please continue reading 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 arranged on at least one of the middle portion 1b and the blade tip portion 1c.

[0061] Optionally, the vibration suppression component 2 may be arranged in the middle portion 1b, or in the blade tip portion 1c, or in both the middle portion 1b and the blade root portion 1a.

[0062] 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 arranged on the outer surface 11 of the tip portion 1c of the blade body 1 and extend along the axial direction X. Since the vibration suppression component 2 has an initial state S0, it can expand to a first volume to disturb the airflow, thereby effectively suppressing the vibration problem of the tip portion 1c and reducing the swing amplitude of the tip portion 1c, making it easier for the operator to dock the root portion 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.

[0063] When a clamp is used to clamp the blade body 1, the clamp is often clamped at the middle part 1b of the blade body 1. Therefore, in some optional embodiments, the vibration suppression component 2 can be arranged on the outer surface 11 of the middle part 1b of the blade body 1 and extend along the axial direction X. Since the vibration suppression component 2 can be converted between the initial state S0 and the contracted state S1, the vibration suppression component 2 can be converted to the contracted state S1 when clamped by the clamp, that is, it shrinks from the first volume to the second volume, so as to prevent the clamp from interfering with the vibration suppression component 2 and prevent the vibration suppression component 2 from being damaged by the clamp, thereby reducing the number of maintenance times by operators and reducing maintenance costs and manufacturing costs.

[0064] In some optional embodiments, the vibration suppression component 2 can be arranged on the outer surface 11 of the middle portion 1b and the tip portion 1c of the blade body 1 and extend along the axial direction X. During the installation process of the blade 100, the vibration suppression component 2 located at the tip portion 1c is in the initial state S0 to suppress the vibration of the tip portion 1c and reduce the swing amplitude of the tip portion 1c. The vibration suppression component 2 located in the middle portion 1b is in the contracted state S1 to prevent the vibration suppression component 2 from being damaged by the clamp. When the blade 100 is installed and enters the service state, the vibration suppression component 2 located in the middle portion 1b can be converted to the initial state S0 to increase the power generation. The vibration suppression component 2 located at the tip portion 1c can be in the initial state and work together with the vibration suppression component 2 located in the middle portion 1b to increase the power generation. Of course, the vibration suppression component 2 located at the tip portion 1c can also be converted to the contracted state S1. It can be designed according to actual needs, and this application does not limit this.

[0065] Please continue reading Figure 3 and Figure 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, and in the contracted state S1, the flexible body 22 is deformed and contracted.

[0066] The flexible body 22 is disposed on a 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 .

[0067] Optionally, the connection seat 21 can be a rigid connection seat 21, and of course, it can also be set as a flexible connection seat 21. Optionally, the number of connection seats 21 can be set to one or more, and one connection seat 21 can be connected to multiple flexible bodies 22, and one connection seat 21 can also be set corresponding to one flexible body 22.

[0068] In the initial state S0, the flexible body 22 expands to a first volume setting, that is, the end of the flexible body 22 away from the outer surface 11 is at a certain distance from the outer surface 11, so that it can disturb the airflow, thereby suppressing the vibration of the blade body 1 and increasing the power generation.

[0069] In the contracted state S1 , the flexible body 22 can deform and contract, that is, at least one end of the flexible body 22 that is away from the outer surface 11 moves toward the blade body 1 , so as to contract to a second volume that is smaller than the first volume.

[0070] By configuring the vibration suppression component 2 to include a connecting seat 21 and a flexible body 22, the vibration suppression 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 risk of the vibration suppression component 2 falling due to a loose connection with the outer surface 11 of the blade body 1.

[0071] Furthermore, the connection seat 21 can receive the force of deformation, contraction and expansion of the flexible body 22, preventing the force from directly acting on the outer surface 11 of the blade body 1, thereby causing the outer surface 11 to be uneven or even causing damage to the blade body 1.

[0072] In some optional embodiments, the flexible body 22 is a solid structure and is made of a memory material.

[0073] The flexible body 22 can be configured as a solid structure made of memory material. The memory material means that after being subjected to a predetermined pressure, for example, after being clamped by a clamp, it can automatically deform from the initial state S0 to the contracted state S1. When not subjected to pressure, for example, after the clamp is relaxed, it can automatically deform from the contracted state S1 to the initial state S0, which can effectively prevent the blade 100 from vibrating and increase the power generation.

[0074] 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 be transformed between the initial state S0 and the contracted state S1.

[0075] As an optional embodiment, the flexible body 22 can also be a membrane structure. The flexible body 22 and the connecting seat 21 enclose a accommodating cavity 2a. In the initial state S0, the accommodating cavity 2a is filled with gas to expand to a first volume. In the contracted state S1, the gas is discharged from the accommodating cavity 2a to shrink to a second volume.

[0076] Optionally, the flexible body 22 can be configured as a membrane structure made of memory material. Optionally, the flexible body 22 can be configured as a deformable airbag structure, which can automatically deform from an initial state S0 to a contracted state S1 after being clamped by a clamp, and when not under pressure, for example, after the clamp is relaxed, it can automatically deform from a contracted state S1 to an initial state S0, which can effectively prevent the blade 100 from vibrating and increase power generation.

[0077] In addition, the flexible body 22 and the connecting seat 21 enclose a receiving chamber 2a. When the receiving chamber 2a is inflated and expanded or 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 and increasing the service life of the vibration suppression component 2.

[0078] See also Figure 8 and Fig. 9 In some optional embodiments, the vibration suppression component 2 includes a vent hole 23, and the vent hole 23 is connected to the accommodating cavity 2a, so that the vibration suppression component 2 can be switched between the initial state S0 and the contracted state S1.

[0079] It can be understood that the first volume and the second volume refer to the volumes of the accommodating chamber 2a.

[0080] Optionally, the vent hole 23 may be provided on the flexible body 22 to communicate with the accommodating cavity 2a. Of course, the vent hole 23 may also be provided through the connecting seat 21 to communicate with the accommodating cavity 2a.

[0081] 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 vent hole 23 to the outside of the accommodating chamber 2a, the vibration suppression component 2 is switched from the initial state S0 to the contracted state S1. When the vibration suppression component 2 inhales gas from the vent hole 23 to the outside of the accommodating chamber 2a, the vibration suppression component 2 is switched from the contracted state S1 to the initial state S0.

[0082] Through the above arrangement, the state of the vibration suppression component 2 can be adjusted by means of air intake and exhaust through the vent hole 23, which is simple to operate and improves convenience.

[0083] See also Fig.10 and Fig.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 extends out from the through hole and communicates with the ventilation hole 23. The accommodating cavity 2a is filled with gas and exhausts gas through the ventilation hole 23 and the ventilation duct 3.

[0084] The ventilation duct 3 is arranged inside the blade body 1, and one end of the ventilation duct 3 is connected to the ventilation hole 23 through a hole opened on the blade body 1 to inflate the accommodating cavity 2a or receive the gas discharged from the accommodating cavity 2a, so that the vibration suppression component 2 can be switched between the initial state S0 and the contracted state S1.

[0085] Through the above configuration, the ventilation duct 3 is arranged inside the blade body 1, which can not only ensure that the state of the vibration suppression component 2 can be adjusted, but also avoid the problem that the ventilation duct 3 is arranged on the outer surface 11 of the blade body 1 and affects the airflow passing through the outer surface 11.

[0086] Optionally, the other end of the ventilation pipe 3 can be connected to a pump in the wheel hub 110 to provide gas to and receive gas in the accommodating chamber 2a. Optionally, the other end of the ventilation pipe 3 can also be connected to a manual air pump, an electric air pump, an air compressor, etc., which is not limited in this application.

[0087] See also Fig.12 In some optional embodiments, the blade 100 further includes a storage tank 4 disposed inside the blade body 1 and connected to the ventilation duct 3 , and the storage tank 4 is configured to provide gas to the accommodating cavity 2a through the ventilation duct 3 and store the gas.

[0088] The other end of the ventilation pipe 3 can also be connected to a storage tank 4 disposed inside the blade body 1 to provide gas to the accommodating cavity 2a and receive gas.

[0089] Optionally, the storage tank 4 may be made of a rigid material, or of course, may also be made of a flexible material.

[0090] Through the above arrangement, the effectiveness of the state conversion of the vibration suppression component 2 by means of inflation and exhaust can be ensured, thereby improving reliability.

[0091] 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 thereof.

[0092] As an optional implementation, the storage tank 4 is filled with a reaction substance capable of generating gas, and the reaction substance can generate gas under a predetermined pressure.

[0093] Optionally, the reaction material may include an acidic liquid and an 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 airflow, the acidic liquid and the alkaline powder fuse and react to produce carbon dioxide gas, which flows into the accommodating chamber 2a of the vibration suppression component 2 through the ventilation pipe 3, so that it can expand to the first volume to prevent the blade 100 from vibrating and increase the power generation. When the blade body 1 does not shake or shakes not strongly, the reaction material in the storage tank 4 will not come into contact and react.

[0094] Optionally, the storage tank 4 may be provided with a plurality of storage chambers and reaction chambers with through holes, and the reaction material capable of generating gas is placed in the storage chamber, and can partially flow into the reaction chamber through the through holes to generate gas by contact.

[0095] When the reaction material in the storage tank 4 is exhausted, it is only necessary to replace the storage tank 4 or refill the reaction material, which is convenient for operation.

[0096] Through the above arrangement, the effectiveness of the state conversion of the vibration suppression component 2 by means of inflation and exhaust can be ensured, thereby improving reliability.

[0097] Please continue reading Figures 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-convex shape along the axial direction X.

[0098] It is understandable 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 connection seat 21 is concave-convex along the axial direction X, so as to have a better turbulent airflow effect. Optionally, the side of the flexible body 22 away from the connection seat 21 can be in a dovetail shape along the axial direction X, and of course it can also be configured in other concave-convex shapes.

[0099] Through the above-mentioned setting, the side of the flexible body 22 away from the connecting seat 21 is set to a concave-convex shape along the axial direction X, so that 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 improving the service life of the vibration suppression component 2 and better achieving the effect of preventing the blade body 1 from vibrating and increasing the power generation.

[0100] Specifically, the shape and structure of the flexible body 22 can be designed based on the aerodynamic simulation calculation results to most effectively disturb the airflow.

[0101] 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 .

[0102] Optionally, the flexible body 22 may include two protrusions 221 , and of course, may also include a plurality of protrusions 221 .

[0103] For example, when the vibration suppression component 2 is provided in 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 the vibration suppression components 2 is provided to be two or more, its flexible body 22 may be provided to include two protrusions 221 and one recess 222.

[0104] Optionally, the protrusion height of each protrusion 221 can be the same, of course, it can also be set to be different, and it can also be set that the protrusion height of at least one protrusion 221 is greater than the protrusion height of another protrusion 221. This shape can be set according to actual needs, and this application does not limit this.

[0105] 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 effect of preventing the blade body 1 from vibrating and increasing power generation.

[0106] In order to suppress the vibration problem during installation, the existing blade 100 often uses a net to cover the blade tip 1c before installation. However, the net is very easy to be damaged or fail, and it is difficult to operate it on the blade 100. In addition, when the blade 100 is installed and the net is removed, the blade 100 must be rotated until it remains in a vertical position before it can be pulled down vertically. This removal operation not only has the risk of damaging the blade 100, but also increases the difficulty of the operator's high-altitude operation, which poses a safety hazard. In addition, when the blade 100 is used in an onshore wind turbine generator set, the net is easy to fall to the bottom surface, causing safety problems, or when the blade 100 is used in an offshore wind turbine generator set, the net is easy to fall into the sea, causing marine pollution problems.

[0107] Therefore, based on the above defects, please refer to Fig.13 The blade 100 provided in the embodiment of the present application further includes a transition component 5 , and the vibration suppression component 2 is detachably connected to the outer surface 11 of the blade body 1 through the transition component 5 .

[0108] 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.

[0109] 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 realizing lightweight design for easy mass production.

[0110] In some optional embodiments, the adapter component 5 includes a matching body 51 and a guide wire 52, the guide wire 52 is connected to one of the matching body 51 and the vibration suppression component 2, and 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 matching body 51. In the power-on state, the guide wire 52 can introduce current and act on one of the matching 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.

[0111] Optionally, the matching body 51 may be disposed on the outer surface 11 of the blade body 1 , and the vibration damping component 2 is connected to the outer surface 11 through the matching body 51 .

[0112] The guide wire 52 is connected to one of the matching body 51 and the vibration suppression component 2 . Optionally, the guide wire 52 can be connected to the matching body 51 , and of course, can also be connected to the vibration suppression component 2 .

[0113] Exemplarily, the guide wire 52 is connected to the matching 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 matching body 51, so that it can achieve the effect of preventing the blade 100 from vibrating and increasing the power generation. In the power-on state, the guide wire 52 can introduce current to act on the matching body 51, 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.

[0114] Optionally, the adapter component 5 can be connected to the vibration suppression component 2 of the blade tip portion 1 c , and of course, can also be connected to the vibration suppression component 2 of the middle portion 1 b , and of course, can also be connected to all the vibration suppression components 2 .

[0115] 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 disassembled by switching the state through the guide wire 52, while the vibration suppression component 2 of the middle part 1b is still connected to the outer surface 11 of the blade body 1, so that the power generation of the blade 100 is improved when it is in service.

[0116] Of course, the adapter component 5 can be connected to the vibration suppression component 2 of the middle part 1b, and when there is a need for replacement or other needs, it can be flexibly disassembled to reduce the difficulty of 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.

[0117] In some optional embodiments, the matching 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 power-on 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;

[0118] Optionally, the matching body 51 can be set as a magnet, and the connecting seat 21 can be set as a metal material that can be attracted by the magnet, and the two can have a magnetic attraction effect so that the vibration suppression component 2 is installed on the outer surface 11 of the blade body 1. Of course, the matching body 51 can also be set as a metal material that can be attracted by a magnet, and the connecting seat 21 can be set as a magnet, and this application does not limit this.

[0119] Optionally, the magnet includes at least one of an electromagnet and a permanent magnet. Optionally, the metal material that can be attracted by the magnet includes iron, nickel, cobalt, etc.

[0120] Exemplarily, the matching body 51 is set 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 seat 21 is magnetically connected to the magnet. When the guide wire 52 is in the power-on state, the current is transmitted from the guide wire 52 to the magnet, so that the magnet loses its magnetic attraction, and the connection seat 21 is separated from the magnet 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 guide wire 52 is connected to the connection seat 21 of the metal material, in the power-on state, the current can be transmitted from the guide wire 52 to the connection seat 21, and then transmitted from the connection seat 21 to the matching body 51 to make it lose its magnetic attraction.

[0121] The above arrangement facilitates the installation and disassembly of the vibration suppression component 2 on the outer surface 11 of the blade body 1, is easy to operate, and can also improve the connection strength between the vibration suppression component 2 and the outer surface 11, prevent the connection failure and fall thereof, causing safety and pollution problems, and further improve safety and reliability.

[0122] As an optional embodiment, the fitting body 51 includes a first connecting adhesive layer, wherein in the power-off state, the vibration suppression component 2 is bonded and connected to the outer surface 11 of the blade body 1 through the first connecting adhesive layer. In the power-on state, the guide wire 52 introduces current to the first connecting adhesive layer to lose its viscosity, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1.

[0123] Exemplarily, the vibration suppression component 2 may be bonded to the outer surface 11 of the blade body 1 by means of adhesive bonding. When the guide wire 52 is in the power-off state, the vibration suppression component 2 is bonded to the outer surface 11 of the blade body 1 through the first connecting adhesive layer. When the guide wire 52 is in the power-on state, the current can be transmitted to the first connecting adhesive layer through the guide wire 52 to make the connecting adhesive 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.

[0124] Optionally, the first connecting adhesive layer may include a hot melt adhesive material, and of course, may also be set to be an adhesive of other materials.

[0125] The above arrangement facilitates the installation and disassembly of the vibration suppression component 2 on the outer surface 11 of the blade body 1, is easy to operate, and can also improve the connection strength between the vibration suppression component 2 and the outer surface 11, prevent the connection failure and fall thereof, causing safety and pollution problems, and further improve safety and reliability.

[0126] In some optional embodiments, the blade 100 further includes a lightning receptor 6 and a storage device, wherein the storage device is connected to the lightning receptor 6 and the guide wire 52 , and the storage device is configured to obtain the current converted by the lightning receptor 6 , and is used to transfer the current within a preset range to the guide wire 52 .

[0127] Optionally, the lightning receptor 6 may be disposed on the outer surface 11 of the blade body 1 , and the storage may also be disposed on the outer surface 11 of the blade body 1 , and the lightning receptor 6 is connected to the guide line 52 via the storage.

[0128] The lightning arrester 6 is used to receive lightning strikes to obtain current, and at least part of the current can be stored in a storage device. When the vibration suppression component 2 needs to be disassembled, it is only necessary to control the storage device to release the current within a preset range to be transmitted to the guide wire 52.

[0129] Through the above arrangement, the current converted from the lightning strike received by the lightning arrester 6 can be effectively utilized, the cost can be reduced, the acquisition is easy, and the vibration suppression component 2 can be easily disassembled, thereby improving the disassembly efficiency.

[0130] Optionally, the guide wire 52 may also be directly connected to a power distribution device in the wheel hub 110 to obtain current within a preset range.

[0131] See also Fig.14In some optional embodiments, the transition component 5 includes a second connecting adhesive 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 connecting adhesive layer 53 and one of the vibration suppression component 2, and the connecting pipe 54 is configured to transmit gas that reacts with the second connecting adhesive layer 53 until the second connecting adhesive layer 53 loses its viscosity, so as to separate the vibration suppression component 2 from the outer surface 11 of the blade body 1.

[0132] The adapter component 5 may further include a second connecting adhesive 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 adhesive layer 53 through a through hole outside the blade body. The connecting pipe 54 can transmit the gas that reacts with the second connecting adhesive layer 53 until the second connecting adhesive layer 53 loses 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.

[0133] Optionally, the second connecting layer may include a hot-melt material, and the connecting pipe 54 can transmit low-temperature nitrogen to the hot-melt material, causing it to shrink in volume and fall off from the outer surface 11 of the blade body 1, thereby separating 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.

[0134] Optionally, the second connecting adhesive layer 53 can be made of the same material as the first connecting adhesive layer, or of course, can be made of different materials, as long as it can meet the connection requirements between the vibration suppression component 2 and the outer surface 11 of the blade body 1 .

[0135] Optionally, when the adapter component 5 includes the second connecting adhesive layer 53 and the connecting pipe 54, the adapter component 5 can also include the first connecting adhesive layer and the guide wire 52. It can be understood that the two disassembly methods can exist at the same time. The specific disassembly method is as described above and will not be repeated here.

[0136] In some optional embodiments, the vibration suppression component 2 further includes a connecting cable 24 , the number of the vibration suppression components 2 is set to two or more, and the two or more vibration suppression components 2 are connected by the connecting cable 24 and are spaced apart along the axial X direction of the blade body 1 .

[0137] 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 vibration suppression component 2 can be recovered by pulling the connecting cable 24, which is simple to manufacture. In addition, 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 problems.

[0138] By providing the connecting rope 24, when the vibration suppression component 2 is disassembled, the operator can pull the other end of the connecting rope 24 to recover all the vibration suppression components 2, so as to prevent the vibration suppression component 2 from falling after being separated from the blade body 1, and also avoid the risk of the operator performing the recovery operation at high altitude. In addition, the recovered vibration suppression component 2 can be reused, which can reduce costs and achieve versatility.

[0139] Optionally, one end of the connecting cable 24 may be connected to the vibration suppression component 2 , and the other end may extend into the wheel hub 110 . The operator can retract the vibration suppression component 2 by pulling the other end of the connecting cable 24 .

[0140] The number of vibration suppression components 2 can be set to two, and of course, it can also be set to more than one. When the connecting cable 24 is connected to two or more vibration suppression components 2, the two or more vibration suppression 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, and one end of each of the multiple sub-connecting cables 24 is connected to a vibration suppression component 2, and the other end converges and is connected to the connecting cable 24.

[0141] The number of vibration suppression components 2 being two or more is only an optional example, and in some embodiments, the number of vibration suppression 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 recycle it.

[0142] 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. Exemplarily, the connecting cable 24 is connected to the connecting seat 21 to prevent the flexible body 22 from directly contacting the connecting cable 24, to prevent it from being pulled and causing failure or even damage, to increase the service life of the flexible body 22, and to facilitate it to better achieve the function of turbulent airflow, so as to better prevent the blade body 1 from vibrating and increase the power generation. In addition, the connecting cable 24 is connected to the connecting seat 21, which can also make the connecting cable 24 closer to the outer surface 11 of the blade body 1, so as to reduce the problem of its influence on the airflow flowing through the outer surface 11.

[0143] The embodiment of the present application further provides a wind turbine generator set, including a hub 110 and the blades 100 as described above, connected to the hub 110 .

[0144] Since the blade 100 provided in the embodiment of the present application has the function of preventing vibration and increasing power generation, the wind turbine generator set having the blade 100 can improve installation efficiency and have better operating efficiency.

[0145] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A blade (100) applied to a wind turbine generator set, characterized in that: include: A blade body (1) having an outer surface (11); A vibration suppression component (2) is arranged 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), and the vibration suppression component (2) can be switched between the initial state (S0) and the contracted state (S1); Wherein, in the initial state (S0), the vibration suppression component (2) expands to a first volume and is capable of disturbing the airflow to suppress the vibration of the blade body (1); in the contracted state (S1), the vibration suppression component (2) is capable of contracting to a second volume, and the first volume is larger than the second volume; The blade (100) further comprises a transition component (5), and the vibration suppression component (2) is detachably connected to the outer surface (11) of the blade body (1) via the transition component (5); The adapter component (5) comprises a matching body (51) and a guide wire (52), wherein the guide wire (52) is connected to one of the matching body (51) and the vibration suppression component (2), and 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 matching body (51); in the power-on state, the guide wire (52) can introduce current and act on one of the matching 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).

2. The blade (100) according to claim 1, characterized in that The vibration suppression component (2) comprises a connection seat (21) and a flexible body (22); the connection 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) is deformed and contracted.

3. The blade (100) according to claim 2, characterized in that: The flexible body (22) is a solid structure and is made of memory material; or, The flexible body (22) is in a membrane structure, and the flexible body (22) and the connecting seat (21) enclose a receiving cavity (2a); in the initial state (S0), the receiving cavity (2a) is filled with gas to expand to the first volume; in the contracted state (S1), the gas is discharged from the receiving cavity (2a) to contract to the second volume.

4. The blade (100) according to claim 3, characterized in that: The vibration suppression component (2) comprises a vent hole (23), and the vent hole (23) is communicated with the accommodating chamber (2a), so that the vibration suppression component (2) can be switched between the initial state (S0) and the contracted state (S1).

5. The blade (100) according to claim 4, characterized in that: It also includes a ventilation pipe (3) 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 pipe (3) extends out from the through hole and communicates with the ventilation hole (23); the accommodating cavity (2a) is filled with gas and exhausts gas through the ventilation hole (23) and the ventilation pipe (3).

6. The blade (100) according to claim 5, characterized in that It also includes a storage tank (4) which is arranged inside the blade body (1) and connected to the ventilation pipe (3); the storage tank (4) is configured to provide gas to the accommodating cavity (2a) through the ventilation pipe (3) and 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 reaction substance capable of generating gas, and the reaction substance is capable of generating 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) facing away from the connecting seat (21) is arranged in a concave-convex manner along the axial direction (X).

9. The blade (100) according to claim 8, characterized in that The flexible body (22) comprises 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).

10. The blade (100) according to claim 1, characterized in that The matching body (51) comprises 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 power-on 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); or, The fitting body (51) comprises a first connecting adhesive layer, wherein in the power-off state, the vibration suppression component (2) is bonded and connected to the outer surface (11) of the blade body (1) through the first connecting adhesive layer; in the power-on state, the guide wire (52) introduces current to the first connecting adhesive layer to make it lose its adhesiveness, so that the vibration suppression component (2) is separated from the outer surface (11) of the blade body (1).

11. The blade (100) according to claim 1, characterized in that The blade body (1) further comprises a lightning receptor (6) and a storage device, wherein the storage device is connected to the lightning receptor (6) and the guide wire (52), and the storage device is configured to obtain the current converted by the lightning receptor (6) and to transfer the current within a preset range to the guide wire (52).

12. The blade (100) according to claim 1, characterized in that The transition component (5) includes a second connecting adhesive 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 connecting adhesive layer (53) and one of the vibration suppression components (2), and the connecting pipe (54) is configured to transmit gas that reacts with the second connecting adhesive layer (53) to the second connecting adhesive layer (53) to lose its viscosity, so as to separate the vibration suppression component (2) from the outer surface (11) of the blade body (1).

13. The blade (100) according to any one of claims 1 to 12, characterized in that: The vibration suppression component (2) further comprises a connecting rope (24); the number of the vibration suppression components (2) is set to be two or more; the two or more vibration suppression components (2) are connected via the connecting rope (24) and are spaced apart and distributed along the axial (X) direction of the blade body (1).

14. The blade (100) according to claim 13, characterized in that The blade body (1) comprises 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 arranged on at least one of the middle portion (1b) and the blade tip portion (1c).

15. A wind turbine generator set, characterized in that: include: Wheel hub (110); The blade (100) according to any one of claims 1 to 14 is connected to the hub (110).

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