CN117365825A

CN117365825A - Blade and wind generating set

Info

Publication number: CN117365825A
Application number: CN202210755557.0A
Authority: CN
Inventors: 方晶; 徐俊杰; 蒋旭亮; 袁刚
Original assignee: Jiangsu Goldwind Science and Technology Co Ltd
Current assignee: Jiangsu Goldwind Science and Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-01-09
Also published as: WO2024000905A1

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

Blade and wind generating set

Technical Field

The application relates to the technical field of wind power, in particular to a blade and a wind generating set.

Background

With the continuous development of wind power technology, more requirements are put on wind power generation sets, for example, in the aspect of blade design, not only cost and weight reduction are considered preferentially, but also efficiency and safety problems of blade hoisting are considered.

However, in the hoisting process of the existing blade, safety risk problems are easily generated when bolts of the existing blade are in butt joint with a hub due to vibration of the blade, and therefore installation efficiency is low. And when using the anchor clamps to lift by crane the blade, take place to interfere between anchor clamps and the vortex generator that sets up on the blade, lead to vortex generator to be clamped bad or inefficacy, unable normal work.

Disclosure of Invention

The embodiment of the application provides a blade and wind generating set, vibration problem and installation interference problem when can solving the blade installation to improve installation effectiveness, guarantee fail safe nature.

In one aspect, according to an embodiment of the present application, a blade is provided, which is applied to a wind generating set, and includes: a blade body having an outer surface; the vibration suppression component is arranged on the outer surface, extends along the axial direction of the blade body, has an initial state and a contracted state, and can be switched between the initial state and the contracted state; 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 an aspect of the embodiments of the present application, the vibration suppressing member includes a connection seat and a flexible body, the connection seat is connected to the outer surface, the flexible body is expanded in an initial state, and in a contracted state, the flexible body is deformed and contracted.

According to one aspect of an embodiment of the present application, the flexible body is of solid construction and is made of a memory material; or the flexible body is in a film structure, the flexible body and the connecting seat are enclosed to form a containing cavity, in an initial state, the containing cavity is filled with gas to expand to a first volume, and in a contracted state, the containing cavity is internally provided with gas to contract to a second volume.

According to one aspect of an embodiment of the present application, the vibration suppressing member includes a vent hole that communicates with the accommodation chamber to switch the vibration suppressing member between an initial state and a contracted state.

According to an aspect of the embodiment of the application, the blade further comprises a vent pipe, the vent pipe is arranged inside the blade body, a through hole is formed in the outer surface of the blade body, one end of the vent pipe extends out of the through hole and is communicated with the vent hole, and the accommodating cavity is filled with gas and exhaust gas through the vent hole and the vent pipe.

According to an aspect of the embodiments of the present application, the blade body further comprises a storage tank disposed inside the blade body and connected to the vent pipe, the storage tank being configured to supply gas to the accommodating chamber through the vent pipe and to store the gas.

According to one aspect of the embodiments of the present application, the storage tank is filled with a predetermined gas, or the storage tank is filled with a reactive substance capable of generating a gas, and the reactive substance is capable of generating a gas at a predetermined pressure.

According to one aspect of the embodiments of the present application, in the initial state, a side of the flexible body facing away from the connection seat is provided with a concave-convex shape along the axial direction.

According to one aspect of the embodiments of the present application, the flexible body includes two or more protrusions, the two or more protrusions are axially distributed, a recess is formed between two adjacent protrusions, and a protrusion height of at least one protrusion is greater than a protrusion height of another protrusion.

According to an aspect of embodiments of the present application, the blade further comprises an adapter member, through which the vibration suppressing member is detachably connected to the outer surface of the blade body.

According to one aspect of an embodiment of the present application, the adapter member includes a mating body and a guide wire connected to one of the mating body and the vibration suppressing member, the guide wire having an off-state and an on-state; in the power-off state, the vibration suppression component is connected with the outer surface of the blade body through the matching body; in the energized state, the guide wire is capable of introducing an electric current and acting on the mating body such that the vibration suppressing member is disposed apart from the outer surface of the blade body.

According to one aspect of the embodiments of the present application, the mating body includes a magnet, wherein in the de-energized state, the vibration suppression member is magnetically coupled to the outer surface of the blade body by the magnet; in the energized state, the guide wire introduces current to the magnet to lose magnetic attraction force so that the vibration suppressing component is separated from the outer surface of the blade body; or the matching body comprises a first connecting adhesive layer, wherein in the power-off state, the vibration suppression component is connected with the outer surface of the blade body in an adhesive manner through the first connecting adhesive layer; in the energized state, the guide wire induces an electric current to the first bond line to lose adhesion so that the vibration suppression member is separated from the outer surface of the blade body.

According to an aspect of the embodiments of the present application, the blade body further comprises a lightning receptor and a reservoir connected to the lightning receptor and to the guide wire, the reservoir being configured to obtain a current converted by the lightning receptor for transferring the current within a preset range to the guide wire.

According to an aspect of the embodiments of the present application, the adapting part includes a second connection adhesive layer and a connection pipe, one end of the connection pipe extends into the blade body, the other end of the connection pipe is connected to one of the second connection adhesive layer and the vibration suppressing part, and the connection pipe is configured to transmit gas reacted with the second connection adhesive layer to lose viscosity, so that the vibration suppressing part is separated from the outer surface of the blade body.

According to an aspect of the embodiments of the present application, the vibration suppressing member further includes a connecting cable, and the number of vibration suppressing members is set to two or more, and the two or more vibration suppressing members are connected by the connecting cable and are distributed at intervals along the axial direction of the blade body.

According to an aspect of an embodiment of the present application, the blade body comprises a blade root portion, a middle portion and a blade tip portion distributed in an axial direction, and the vibration suppressing member is provided on at least one of the middle portion and the blade tip portion.

In another aspect, according to an embodiment of the present application, there is provided a wind turbine generator set, including: a hub; the blade as described above is connected to the hub.

The blade and the wind generating set that this application embodiment provided, blade include blade body and the part that shakes, and the part that shakes sets up on the surface of blade body and extends along the axial of blade body, and the part that shakes has initial state and shrink state and can change between two kinds of states. In the installation of the blade, at least part of the vibration suppressing component is in an initial state, and can expand to a first volume and disturb air flow so as to suppress vibration of the blade body in the installation, and effectively reduce vibration amplitude of the blade body so as to improve installation efficiency and safety. And when the fixture clamps and fixes the blade, at least part of vibration suppressing parts are in a contracted state, and can be contracted to a second volume by the first volume, so that the problem of interference with tools such as other fixtures in the installation process is avoided, meanwhile, the damage and even failure of the vibration suppressing parts can be avoided, the replacement times and the maintenance difficulty can be reduced, and the cost and the reliability are reduced. In addition, in the service process of the blade, the vibration suppression component is in an initial state so as to disturb the airflow and achieve the effect of improving the generated energy.

Drawings

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

FIG. 1 is a schematic view of a wind turbine generator system according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a blade according to one embodiment of the present application;

FIG. 3 is a schematic view of the structure of the vibration suppressing member in the blade according to one embodiment of the present application in an initial state;

FIG. 4 is a schematic view of a structure of a vibration suppressing member in a blade according to an embodiment of the present application in a contracted state;

FIG. 5 is a schematic view of a partial structure of a blade according to an embodiment of the present application when the blade is clamped by a clamp;

FIG. 6 is an enlarged schematic view of the structure at P in FIG. 5;

FIG. 7 is a schematic view of a partial structure of a blade according to another embodiment of the present application;

FIG. 8 is a schematic view of a vibration suppressing member in a blade according to another embodiment of the present application in an initial state;

FIG. 9 is a schematic view of a vibration suppression component in a blade according to another embodiment of the present application in a contracted state;

FIG. 10 is a schematic view of a vibration suppressing member in a blade according to still another embodiment of the present application in an initial state;

FIG. 11 is a schematic view of a vibration suppression component in a blade according to yet another embodiment of the present application in a contracted state;

FIG. 12 is a schematic view of a partial structure of a blade according to another embodiment of the present application;

FIG. 13 is a schematic view of a partial construction of a blade according to yet another embodiment of the present application;

fig. 14 is a schematic view showing a partial structure of a blade according to still another embodiment of the present application.

Wherein:

100-leaf blades; 1-a blade body; 1 a-leaf root; 1 b-middle part; 1 c-tip; 11-an outer surface; 2-vibration suppressing members; 21-a connecting seat; 22-a flexible body; 221-a bump; 222-recess; 2 a-a receiving cavity; 23-vent holes; 24-connecting cables; 3-a ventilation duct; 4-a storage tank;

5-an adapter component; 51-complex; 52-a guide wire; 53-a second connection glue layer; 54-connecting pipes; 6-lightning receptor;

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

S0-initial state; s1-contracted State

X-axis direction.

Detailed Description

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

The directional terms appearing in the following description are all directions shown in the drawings and are not limiting of the blades and wind turbine generator sets of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For a better understanding of the present application, a blade and a wind turbine generator according to embodiments of the application are described in detail below in connection with fig. 1 to 14.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present application, and the embodiment of the present application provides a wind turbine generator system, including a hub 110 and a blade 100, where the blade 100 is connected to the hub 110. Of course, the wind power plant also comprises a tower 200, a nacelle 300, a generator 310. The tower 200 is connected to a wind turbine foundation, the nacelle 300 is mounted on top of the tower 200, and the generator 310 is mounted on the nacelle 300. In some examples, the generator 310 may be located outside the nacelle 300. In some examples, the generator 310 may be located inside the nacelle 300. The whole of the plurality of blades 100 connected to the hub 110 may be referred to as an impeller 400, where the impeller 400 is connected to the rotating shaft of the generator 310 through the hub 110, and when the wind acts on the blades 100, the wind drives the whole impeller 400 and the rotating shaft of the generator to rotate, so as to convert the wind energy into electric energy.

In the process of installing the blade 100, the tip portion of the blade 100 generally swings along with wind to cause that the blade bolt cannot be effectively docked with the hub 110, so that the operation difficulty and the safety risk of operators are increased, and the installation time is prolonged. In addition, during the installation process, the installation operation of the blade 100 is often completed by means of a clamp, the clamp can clamp the blade 100 and lift the blade 100 to a specified height, the blade 100 is turned over, translated and the like, and finally the blade 100 and the hub 110 are connected together. The existing blade 100 is often provided with a Vortex Generator (VG) on the outer surface 11 thereof for lifting the generated energy during the service period of the blade 100, and the clamping device of the blade 100 is often clamped at the position of the Vortex generator during the installation process, so that the clamped Vortex generator is damaged or fails, thus the clamped Vortex generator cannot normally operate to cause the generated energy loss when the blade 100 is in the service period after the installation is completed, and the problem of high-altitude operation difficulty and safety risk are increased if the clamped Vortex generator is maintained and replaced by an operator.

Based on the defects, the embodiment of the application provides the blade 100, the vibration amplitude of the blade 100 can be reduced during installation, the installation efficiency is improved, interference with a clamp can be avoided, the safety and reliability are guaranteed, and the generated energy can be better lifted during service of the blade 100.

Referring to fig. 2 to 6, a blade 100 according to an embodiment of the present application is applied to a wind turbine generator set, and includes a blade body 1 and a vibration suppression member 2. The blade body 1 has an outer surface 11. The vibration suppressing member 2 is provided on the outer surface 11, the vibration suppressing member 2 extends along the axial direction X of the blade body 1, the vibration suppressing member 2 has an initial state S0 and a contracted state S1, and the vibration suppressing member 2 is switchable between the initial state S0 and the contracted state S1. Wherein, in initial state S0, the vibration suppressing member 2 expands to a first volume and can disturb the airflow to suppress the vibration of the blade body 1, and in contracted state S1, the vibration suppressing member 2 can contract to a second volume, the first volume being larger than the second volume.

The vibration suppressing member 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, wherein the "axial direction X extends" means that the blade body 1 has a hollow cavity, and the direction from one end to the other end on the long axis of the hollow cavity may be referred to as the axial direction X, and the vibration suppressing member 2 may be disposed on a connecting line from one end to the other end on the long axis of the outer surface 11 of the blade body 1, and may also be disposed on two sides of the connecting line, so long as it is only required that the vibration suppressing member 2 is disposed in the extending direction of the connecting line. Alternatively, the vibration suppressing member 2 may be provided along a straight line, a curved line, or a multi-part folding line in the axial direction X of the blade body 1.

In the installation process of the blade 100, the vibration suppression component 2 arranged at the non-clamp clamping position can be in an initial state S0, namely, can expand to a first volume so as to generate a turbulent flow effect on air flow, prevent the danger brought by the vibration of the blade body 1, reduce the vibration amplitude of the blade body 1 and further improve the installation efficiency and the safety.

Referring to fig. 5 and 6, when the blade body 1 is lifted by using the clamp, a portion of the vibration suppression component 2 disposed 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, so as to adapt to the clamping of the clamp, and avoid the problem that the vibration suppression component is crushed or fails due to interference with the clamp, thereby reducing the replacement times and maintenance difficulty, reducing the cost and improving the reliability.

When the blade 100 is installed and then subjected to a service stage, the vibration suppressing component 2 in the contracted state S1 can be converted into an initial state S0, that is, when the clamp no longer clamps the blade body 1, the vibration suppressing component 2 can expand from the second volume to the first volume so as to disturb the airflow and achieve the effect of improving the generated energy.

Because the blade 100 provided in the embodiment of the present application includes the vibration suppressing component 2 capable of being switched between the initial state S0 and the contracted state S1, so that different effects can be achieved at different stages, and the flexibility of use is improved. The blade 100 provided in the embodiment of the present application can reduce the vibration amplitude of the blade 100 in the installation process to improve the installation efficiency and safety, and can avoid interference with the fixture, so that the vibration suppression component 2 can replace the existing vortex generator to effectively promote the generated energy in the service process of the blade 100.

Referring to fig. 7, the number of vibration suppressing members 2 may be set to one, or two or more.

When the number of vibration suppressing members 2 is set to one, it may include a long strip shape extending in the axial direction X, which is at least partially capable of being in the initial state S0 and at least partially capable of being in the contracted state S1.

When the number of the vibration suppressing members 2 is set to two or more, they may be distributed to extend at intervals along the axial direction X, at least a part of the number of vibration suppressing members 2 may be in the initial state S0, and at least a part of the number of vibration suppressing members 2 may be in the contracted state.

The blade body 1 may be divided into a blade root portion 1a, an intermediate portion 1b and a blade tip portion 1c, which are connected in a distributed manner along the axial direction X, wherein the blade root portion 1a refers to a portion of the blade body 1 connected to the hub 110, i.e. a position closest to the hub 110. Tip 1c refers to the position of blade body 1 furthest from hub 110. The intermediate portion 1b is a position between the blade root portion 1a and the blade tip portion 1c, and includes an abdomen position of the blade body 1.

With continued reference to fig. 2-6, in some alternative embodiments, the blade body 1 includes a root portion 1a, a middle portion 1b, and a tip portion 1c that are distributed along the axial direction X, and the vibration suppressing member 2 is disposed on at least one of the middle portion 1b and the tip portion 1 c.

Alternatively, the vibration suppressing member 2 may be provided in the intermediate portion 1b, but of course, may be provided in the blade tip portion 1c, and the vibration suppressing member 2 may be provided in both the intermediate portion 1b and the blade root portion 1 a.

The blade tip portion 1c of the blade 100 is most susceptible to interference and vibration when the blade is mounted, so in some alternative embodiments, the vibration suppressing member 2 may be disposed on the outer surface 11 of the blade tip portion 1c of the blade body 1 and extend along the axial direction X, and since the vibration suppressing member 2 has the initial state S0, the vibration suppressing member can expand to the first volume to disturb the airflow, thereby effectively suppressing the vibration problem of the blade tip portion 1c, reducing the swing amplitude of the blade tip portion 1c, and facilitating the operator to dock the blade root portion 1a of the blade body 1 with the hub 110, thereby improving the mounting efficiency of the blade 100 and reducing the safety risk of the lifting operation of the operator.

When the blade body 1 is clamped by the clamp, the clamp is often clamped at the position of the middle part 1b of the blade body 1, so in some alternative embodiments, the vibration suppressing member 2 may be disposed on the outer surface 11 of the middle part 1b of the blade body 1 and extend along the axial direction X, and since the vibration suppressing member 2 can be converted between the initial state S0 and the contracted state S1, the vibration suppressing member 2 can be converted into the contracted state S1 when clamped by the clamp, that is, contracted to the second volume by the first volume, so as to prevent the clamp from interfering with the vibration suppressing member 2, avoid the vibration suppressing member 2 from being clamped by the clamp, thereby reducing the maintenance times of operators and reducing the maintenance cost and the manufacturing cost.

In some alternative embodiments, the vibration suppressing member 2 may be disposed on the intermediate 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, and during the installation of the blade 100, the vibration suppressing member 2 located at the blade tip portion 1c is in an initial state S0 to suppress vibration of the blade tip portion 1c, reduce the amplitude of the swing of the blade tip portion 1c, and the vibration suppressing member 2 located at the intermediate portion 1b is in a contracted state S1 to avoid the vibration suppressing member 2 being clamped by the clamp. When the blade 100 enters the service state after being installed, the vibration suppressing member 2 located in the middle portion 1b can be converted into an initial state S0 to raise the generated energy, the vibration suppressing member 2 located in the tip portion 1c can be in an initial rotation state and cooperate with the vibration suppressing member 2 located in the middle portion 1b to raise the generated energy, and of course, the vibration suppressing member 2 located in the tip portion 1c can also be converted into a contracted state S1, which can be designed according to actual requirements.

With continued reference to fig. 3 and 4, in some alternative embodiments, the vibration suppressing member 2 includes a connection seat 21 and a flexible body 22, the connection seat 21 is connected to the outer surface 11, the flexible body 22 is expanded in an initial state S0, and in a contracted state S1, the flexible body 22 deforms and contracts.

The flexible body 22 is arranged on the side of the connection socket 21 facing away from the blade body 1 and is connected with the outer surface 11 of the blade body 1 via the connection socket 21.

Alternatively, the connection base 21 may be a rigid connection base 21, and of course, a flexible connection base 21 may be provided. Alternatively, the number of the connection seats 21 may be set to one or a plurality, and a plurality of flexible bodies 22 may be connected to one connection seat 21, and one connection seat 21 may be set to correspond to one flexible body 22.

In the initial state S0, the flexible body 22 expands to a first volume setting, that is, one end of the flexible body 22 facing away from the outer surface 11 is at a distance from the outer surface 11, so that it can disturb the airflow, thereby achieving the effects of suppressing the vibration of the blade body 1 and lifting the generated energy.

In the contracted state S1, the flexible body 22 is capable of deforming and contracting, i.e. the end of the flexible body 22 facing away from the outer surface 11 is moved at least partially in a direction towards the blade body 1 so that it contracts to a second volume smaller than the first volume.

By arranging the vibration suppressing member 2 in a form comprising the connecting seat 21 and the flexible body 22, the vibration suppressing member 2 can be connected with the outer surface 11 of the blade body 1 through the connecting seat 21, the connection reliability is improved, and the risk that the vibration suppressing member 2 is not firmly connected with the outer surface 11 of the blade body 1 and falls down is prevented.

Moreover, the connecting seat 21 can receive the acting force of deformation shrinkage and deformation expansion of the flexible body 22, so as to prevent the acting force from directly acting on the outer surface 11 of the blade body 1, thereby causing the uneven outer surface 11 and even causing the damage of the blade body 1.

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

The flexible body 22 can be provided as a solid structure made of a memory material. The memory material is capable of automatically deforming from the initial state S0 to the contracted state S1 after being clamped by the clamp after being subjected to a predetermined pressure, and capable of automatically deforming from the contracted state S1 to the initial state S0 after being relaxed when not subjected to the pressure, for example, after being relaxed, thereby effectively preventing the blade 100 from vibrating and improving the power generation capacity.

Alternatively, the solid structure comprises one of a sponge and a rubber body, but of course, other structures may be included as long as they can be satisfied to be transitionable in the initial state S0 and the contracted state S1.

As an alternative embodiment, the flexible body 22 may also be in a film structure, where the flexible body 22 and the connecting seat 21 are enclosed to form a containing cavity 2a, and in the initial state S0, the containing cavity 2a is filled with gas to expand to a first volume, and in the contracted state S1, the containing cavity 2a is exhausted to contract to a second volume.

Alternatively, the flexible body 22 can be provided as a film structure made of a memory material. Alternatively, the flexible body 22 may be configured as a deformable air bag structure that can be automatically deformed from the initial state S0 to the contracted state S1 after being clamped by the clamp, and can be automatically deformed from the contracted state S1 to the initial state S0 when not pressurized, for example, after being relaxed by the clamp, so that the blade 100 can be effectively prevented from vibrating, and the power generation amount can be improved.

And, flexible body 22 encloses with connecting seat 21 and closes and be formed with and hold chamber 2a, when holding chamber 2a inflation and exhaust shrinkage, can reduce the effort of flexible body 22 to connecting seat 21 to improve the reliability of connecting seat 21, improve the life who restraines vibration part 2.

Referring to fig. 8 and 9, in some alternative embodiments, the vibration suppressing member 2 includes a vent hole 23, and the vent hole 23 communicates with the accommodating chamber 2a to switch the vibration suppressing member 2 between an initial state S0 and a contracted state S1.

It is understood that the first volume as well as the second volume refers to the volume that the receiving chamber 2a has.

Alternatively, the vent hole 23 may be provided on the flexible body 22 to communicate with the accommodating chamber 2a, and of course, the vent hole 23 may also be provided through the connection seat 21 to communicate with the accommodating chamber 2 a.

The gas can enter or exit the vibration suppressing member 2 through the vent hole 23 so that the vibration suppressing member 2 can be switched between the initial state S0 and the contracted state S1. When the gas in the vibration suppressing member 2 is discharged from the vent hole 23 to the outside of the accommodating chamber 2a, the vibration suppressing member 2 is switched from the initial state S0 to the contracted state S1, and when the vibration suppressing member 2 is sucked from the vent hole 23 to the outside of the accommodating chamber 2a, the vibration suppressing member 2 is switched from the contracted state S1 to the initial state S0.

By the above arrangement, the state of the vibration suppressing member 2 can be adjusted by sucking and exhausting the air through the air hole 23, and the operation is simple, thereby improving convenience.

Referring to fig. 10 and 11, in some alternative embodiments, the vane 100 further includes a ventilation pipe 3 disposed inside the vane body 1, the outer surface 11 of the vane body 1 is provided with a through hole, one end of the ventilation pipe 3 extends out of the through hole to communicate with the ventilation hole 23, and the accommodating cavity 2a is filled with gas and discharges gas through the ventilation hole 23 and the ventilation pipe 3.

The vent pipe 3 is disposed inside the blade body 1, and one end of the vent pipe 3 is communicated with the vent hole 23 through a hole formed in the blade body 1 to inflate into the accommodating chamber 2a or to receive gas exhausted from the accommodating chamber 2a, so that the vibration suppressing member 2 can be switched between an initial state S0 and a contracted state S1.

Through the above-mentioned setting, with vent pipe 3 setting in the inside of blade body 1, can guarantee to adjust the state that restraines vibration part 2, can also avoid vent pipe 3 setting to exist at the surface 11 of blade body 1 and exert an influence the problem to the air current of surface 11.

Alternatively, the other end of the vent tube 3 may be connected to a pump within the hub 110 to provide gas to the receiving chamber 2a and to receive gas. Alternatively, the other end of the air conduit 3 may also be connected to a manual pump, an electric pump, an air compressor, or the like, which is not limited in this application.

Referring to fig. 12, in some alternative embodiments, the blade 100 further includes a storage tank 4 disposed inside the blade body 1 and connected to the ventilation duct 3, the storage tank 4 being configured to supply gas to the accommodating chamber 2a through the ventilation duct 3 and to store the gas.

The other end of the ventilation duct 3 may also be connected with a storage tank 4 provided inside the blade body 1 to supply and receive gas to and from the accommodation chamber 2 a.

Alternatively, the reservoir 4 may be of a rigid material, although a flexible material may be provided.

Through the arrangement, the effectiveness of the vibration suppressing component 2 in converting states in the mode of inflation and exhaust can be ensured, and accordingly reliability is improved.

In some alternative embodiments, the reservoir 4 is filled with a predetermined gas, wherein the gas filled in the reservoir 4 cannot exceed the maximum capacity of the reservoir 4, avoiding damage or even failure thereof.

As an alternative embodiment, the reservoir tank 4 is filled with a reactive substance capable of generating a gas at a predetermined pressure.

Alternatively, the reactive substance may include an acidic liquid and an alkaline powder, wherein the acidic liquid may employ diluted hydrochloric acid, the alkaline powder may employ sodium bicarbonate, and when the blade body 1 vibrates due to the action of the airflow, the acidic liquid and the alkaline powder fuse and react to generate carbon dioxide gas, and the carbon dioxide gas flows into the accommodating chamber 2a of the vibration suppressing member 2 through the ventilation pipe 3, so that the carbon dioxide gas can expand to a first volume to have the effects of preventing the blade 100 from vibrating and enhancing the power generation amount. When the blade body 1 does not shake or the shake is not strong, the reaction substance in the storage tank 4 does not trigger a reaction.

Alternatively, a plurality of storage chambers with through holes and reaction chambers may be provided in the storage tank 4, and a reactive substance capable of generating a gas may be placed in the storage chambers, which can be brought into contact with the reaction chambers by partial inflow through holes to generate a gas.

When the reaction substance in the storage tank 4 is used up, the storage tank 4 is only required to be replaced or the reaction substance is required to be refilled, so that the operation is convenient.

With continued reference to fig. 2-12, in some alternative embodiments, in the initial state S0, a side of the flexible body 22 facing away from the connection seat 21 is provided with a concavity and convexity along the axial direction X.

It will be appreciated that the flexible body 22 may be configured to have a similar shape to an airfoil, i.e. the side of the flexible body 22 facing away from the connecting seat 21 is provided with a concave-convex shape along the axial direction X, so as to have a better turbulence effect. Alternatively, the side of the flexible body 22 facing away from the connecting seat 21 may have a dovetail shape along the axial direction X, but may also have other concave-convex shapes.

Through the above-mentioned setting, set up unsmooth shape along axial X with the one side that flexible body 22 deviates from connecting seat 21 to make it can reply the flow of air current better, so that this vibration suppression part 2 is applicable to various abominable strong wind weather, thereby improve the life who suppresses vibration suppression part 2, reach the effect that prevents blade body 1 vibration and promote the generated energy better.

Specifically, the shape structure of the flexible body 22 may be designed according to the aerodynamic simulation calculation result, so as to most effectively disturb the shape structure of the flexible body 22 of the airflow.

In some alternative embodiments, the flexible body 22 includes two or more protrusions 221, the two or more protrusions 221 being distributed along the axial direction X, with a recess 222 formed between adjacent two protrusions 221.

Alternatively, the flexible body 22 may comprise two protrusions 221, of course, a plurality of protrusions 221.

For example, when the vibration suppressing member 2 is provided in the form of a single piece, the flexible body 22 thereof may be provided to include a plurality of protrusions 221 and a plurality of recesses 222. When the number of vibration suppressing members 2 is two or more, the flexible body 22 thereof may be provided to include two protrusions 221 and one recess 222.

Alternatively, the protruding height of each protrusion 221 may be the same, or may be different, or may be set such that the protruding height of at least one protrusion 221 is greater than the protruding height of another protrusion 221, and this shape may be set according to the actual requirement, which is not limited in this application.

Through above-mentioned setting to make it can reply the flow of air current better, with make this vibration suppression part 2 be applicable to various abominable strong wind weather, thereby improve the life who suppresses vibration part 2, reach the effect that prevents blade body 1 vibration and promote the generated energy better.

In order to prevent the vibration problem during the installation of the conventional blade 100, the blade tip 1c is often covered with a net before the installation, but the net is extremely fragile or ineffective, and it is difficult to operate the blade 100 by being fitted around the net. Moreover, when the blade 100 is mounted and the net is detached, the blade 100 must be rotated until the blade is kept at a vertical position to vertically pull down the net, and the detachment operation not only has the risk of damaging the blade 100, but also increases the difficulty of high-altitude operation of operators and has potential safety hazards. In addition, when the blade 100 is used for an offshore wind turbine, the mesh is easily dropped to the bottom surface to cause a safety problem, or when the blade 100 is used for an offshore wind turbine, the mesh is easily dropped into the sea to cause a marine pollution problem.

Therefore, based on the above-mentioned drawbacks, referring to fig. 13, the blade 100 according to the embodiment of the present application further includes a switching member 5, and the vibration suppressing member 2 is detachably connected to the outer surface 11 of the blade body 1 through the switching member 5.

Through setting up adapting unit 5 to make and restrain vibration part 2 can dismantle with blade body 1 and be connected, with improve dismantlement efficiency, can also reduce the dismantlement degree of difficulty, guarantee safety.

Optionally, the vibration suppressing component 2 can be made of degradable materials, and can be made of novel nano materials or biological materials, so as to prevent the vibration suppressing component from falling into the sea to pollute the environment, ensure the sustainable development of the vibration suppressing component, realize the lightweight design and facilitate the mass production.

In some alternative embodiments, the adapting member 5 comprises a mating body 51 and a guide wire 52, the guide wire 52 being connected to one of the mating body 51 and the vibration suppressing member 2, the guide wire 52 having an off-state and an on-state. In the de-energized state, the vibration suppressing member 2 is connected to the outer surface 11 of the blade body 1 via the fitting body 51. In the energized state, the guide wire 52 is capable of introducing an electric current and acting on one of the fitting body 51 and the vibration suppressing member 2 so that the vibration suppressing member 2 is disposed apart 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 suppressing member 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 member 2, alternatively the guide wire 52 may be connected to the fitting body 51, of course, also with the vibration suppressing member 2.

Illustratively, the guide wire 52 is attached to the mating body 51. The guide wire 52 has a power-off state in which the vibration suppressing member 2 is connected through the outer surface 11 of the blade body 1 of the fitting body 51 so that it can achieve the effects of preventing the blade 100 from vibrating and raising the amount of power generation. In the energized state, the guide wire 52 is able to induce an electric current to act on the mating body 51 to separate the vibration suppressing member 2 from the outer surface 11 of the blade body 1, thereby achieving the purpose of removing the vibration suppressing member 2.

Alternatively, the adapter part 5 may be connected to the vibration suppressing part 2 of the blade tip part 1c, but may of course also be connected to the vibration suppressing part 2 of the intermediate part 1b, and may of course also be connected to all vibration suppressing parts 2.

Illustratively, the adapter part 5 may be connected to the vibration suppressing part 2 of the blade tip 1c, i.e. the mating body 51 may be provided on the outer surface 11 of the blade tip 1 c. After the hoisting of the blade 100 is completed, the vibration suppressing member 2 of the blade tip portion 1c is disassembled through the state conversion of the guide wire 52, and the vibration suppressing member 2 of the middle portion 1b is still connected to the outer surface 11 of the blade body 1, so that the blade 100 can promote the generated energy when in service.

Of course, the adaptor 5 may be connected to the vibration suppressing member 2 of the middle portion 1b, so that the adaptor can be flexibly detached and the operation difficulty can be reduced when there is a replacement demand or other demands. Through the arrangement, the connection relation between the switching part 5 and the vibration suppressing part 2 can be designed according to the self requirements, so that the use flexibility can be improved, and the universality of the blade 100 can be improved.

In some alternative embodiments, the mating body 51 comprises a magnet, wherein in the de-energized state the vibration suppressing means 2 is magnetically connected to the outer surface 11 of the blade body 1 by the magnet. In the energized state, the guide wire 52 introduces an electric current to the magnet to lose magnetic attraction force, so that the vibration suppressing member 2 is separated from the outer surface 11 of the blade body 1;

Alternatively, the mating body 51 may be provided as a magnet, and the connecting seat 21 may be provided as a metal material that can be attracted by the magnet, both of which can magnetically attract to enable the vibration suppressing member 2 to be mounted on the outer surface 11 of the blade body 1. Of course, the mating body 51 may be made of a metal material that can be attracted to a magnet, and the connection base 21 may be made of a magnet.

Optionally, the magnet comprises at least one of an electromagnet and a permanent magnet. Alternatively, the metallic material capable of being attracted to the magnet includes iron, nickel, cobalt, and the like.

Illustratively, the mating body 51 is provided in the form of a magnet disposed on the outer surface 11 of the blade body 1, with the guide wire 52 being connected to the magnet. When the guide wire 52 is in the power-off state, the connecting seat 21 made of metal is magnetically attracted with the magnet, and when the guide wire 52 is in the power-on state, current is transmitted to the magnet by the guide wire 52, so that the magnet loses the magnetic attraction, the connecting seat 21 is separated from the magnet, and the vibration suppressing part 2 is separated from the outer surface 11 of the blade body 1, so that the purpose of disassembling the vibration suppressing part 2 is achieved. It will be appreciated that when the guide wire 52 is connected to the connecting seat 21 of metallic material, in the energized state, an electric current can be transmitted from the guide wire 52 to the connecting seat 21 and then from the connecting seat 21 to the counterpart 51 so as to lose the magnetic attraction force.

Through above-mentioned setting, do benefit to the installation and the dismantlement of vibration suppression part 2 on the surface 11 of blade body 1, and convenient operation can also improve the joint strength of vibration suppression part 2 and surface 11, prevent that its connection inefficacy from dropping and leading to safety problem and pollution problem, further improve fail safe nature.

As an alternative embodiment, the fitting body 51 comprises a first adhesive layer, wherein in the de-energized state the vibration suppressing means 2 is adhesively connected to the outer surface 11 of the blade body 1 by means of the first adhesive layer. In the energized state, the guide wire 52 introduces an electric current to the first connection glue layer to lose tackiness, so that the vibration suppressing portion 2 is separated from the outer surface 11 of the blade body 1.

By way of example, an adhesive bond may be used to bond the vibration suppression component 2 to the outer surface 11 of the blade body 1. When the guide line 52 is in the power-off state, the vibration suppression component 2 is in adhesive connection with the outer surface 11 of the blade body 1 through the first connection adhesive layer, and when the guide line 52 is in the power-on state, current can be transmitted to the first connection adhesive layer through the guide line 52 to enable the connection adhesive layer to lose viscosity, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1, and the purpose of disassembling the vibration suppression component 2 is achieved.

Alternatively, the first adhesive layer may include a hot melt adhesive material, and of course, may be provided as a colloid of another material.

In some alternative embodiments, blade 100 further includes lightning receptor 6 and a reservoir connected to lightning receptor 6 and guide wire 52, the reservoir configured to obtain a current converted by lightning receptor 6 for delivering a current within a preset range to guide wire 52.

Alternatively, the lightning receptor 6 may be arranged on the outer surface 11 of the blade body 1, and the reservoir may also be arranged on the outer surface 11 of the blade body 1, the lightning receptor 6 being connected to the guide wire 52 by means of the reservoir.

Wherein the lightning receptor 6 is adapted to receive Lei Dianji to obtain an electric current, which can be stored at least partly in the reservoir, and when the vibration suppressing means 2 need to be disassembled, it is only necessary to control the reservoir to release the electric current within a predetermined range to be transferred to the guiding wire 52.

Through the arrangement, the lightning current received by the lightning receptor 6 can be effectively utilized, the cost can be reduced, the lightning current is easy to obtain, the vibration suppression component 2 can be conveniently detached, and the detachment efficiency is improved.

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

Referring to fig. 14, in some alternative embodiments, the adapting member 5 includes a second connection adhesive layer 53 and a connection pipe 54, one end of the connection pipe 54 extends into the blade body 1, the other end is connected to one of the second connection adhesive layer 53 and the vibration suppressing member 2, and the connection pipe 54 is configured to transmit the gas reacted with the second connection adhesive layer 53 to lose viscosity, so that the vibration suppressing member 2 is separated from the outer surface 11 of the blade body 1.

The adapting part 5 may further comprise a second connection glue layer 53 and a connection pipe 54, wherein one end of the connection pipe 54 is located inside the blade body 1, and the other end is connected to the second connection glue layer 53 through a through hole outside the blade body. The connecting pipe 54 can transmit the gas reacted with the second connecting adhesive layer 53 to lose viscosity, so that the vibration suppressing component 2 is separated 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 is capable of transmitting low-temperature nitrogen to the hot melt material, so that the volume of the connection pipe is reduced and the connection pipe is automatically separated from the outer surface 11 of the blade body 1, so that the vibration suppression component 2 is separated from the outer surface 11 of the blade body 1, and the purpose of disassembling the vibration suppression component 2 is achieved.

Alternatively, the second adhesive layer 53 may be made of the same material as the first adhesive layer, but of course may be made of a different material, so long as it is ensured that it is capable of connecting the vibration suppressing member 2 to the outer surface 11 of the blade body 1.

Optionally, when the adapting part 5 includes the second connection adhesive layer 53 and the connection pipe 54, the adapting part 5 may further include the first connection adhesive layer and the guide wire 52, it is understood that two detachment modes can exist simultaneously, and the specific detachment mode is described above and will not be described herein.

In some alternative embodiments, the vibration suppressing members 2 further include connecting wires 24, and the number of the vibration suppressing members 2 is set to two or more, and the two or more vibration suppressing members 2 are connected by the connecting wires 24 and are spaced apart in the axial direction X of the blade body 1.

The vibration suppression component 2 further comprises 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 switching component 5, and at the moment, the vibration suppression component 2 can be recovered in a mode of pulling the connecting cable 24, so that the vibration suppression component is simple to manufacture. In addition, since the vibration suppressing member 2 is connected to the connecting cable 24, the risk of dropping the vibration suppressing member 2 can be prevented, and environmental pollution or safety problems can be avoided.

Through setting up connecting cable 24, when the part 2 that shakes is dismantled, the other end that operating personnel can pull connecting cable 24 is in order to be with the whole recovery that shakes of restraining part 2 to prevent to shake the problem that drops after part 2 and the separation of blade body 1 that shakes, can also avoid operating personnel high altitude to carry out the risk of retrieving the operation. The recovered vibration suppressing member 2 can be reused, and thus the cost can be reduced and the versatility can be realized.

Alternatively, one end of the connecting cable 24 may be connected to the vibration suppressing member 2, and the other end may extend into the hub 110, and an operator may recover the vibration suppressing member 2 by pulling the other end of the connecting cable 24.

The number of the vibration suppressing members 2 may be two, but may be plural. When the connecting cable 24 is connected to two or more vibration suppressing members 2, two or more vibration suppressing members 2 may be connected in series by one connecting cable 24, and of course, the connecting cable 24 may further include a plurality of sub-connecting cables 24, one end of each of the plurality of sub-connecting cables 24 is connected to one vibration suppressing member 2, and the other end thereof is connected to the connecting cable 24 in a converging manner.

The number of the vibration suppressing members 2 is set to two or more, which is just an alternative example, and in some embodiments, the number of the vibration suppressing members 2 may be set to one. When the vibration suppressing members 2 are provided in one, one end of the connecting cable 24 is directly connected to one vibration suppressing member 2 to be recovered.

Alternatively, the connecting cable 24 may be connected to the flexible body 22 of the vibration suppressing member 2, although the connecting cable 24 may also be connected to the connection base 21. The connecting cable 24 is connected to the connecting seat 21, so as to avoid the flexible body 22 from directly contacting with the connecting cable 24, prevent the flexible body 22 from being damaged or failed due to drawing, improve the service life of the flexible body 22, and facilitate better realization of turbulent airflow effect, so as to better achieve the effects of preventing the blade body 1 from vibrating and improving the generated energy. In addition, the connecting cable 24 is connected to the connecting seat 21, so that the connecting cable 24 is closer to the outer surface 11 of the blade body 1, and the problem of influencing the airflow flowing through the outer surface 11 is reduced.

The embodiment of the application also provides a wind generating set, which comprises a hub 110 and the blade 100 connected to the hub 110.

Because the blade 100 provided by the embodiment of the application has the functions of preventing vibration and improving the generated energy, the wind generating set with the blade 100 can improve the installation efficiency and has better operation efficiency.

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

Claims

1. A blade (100) for a wind power plant, comprising:

a blade body (1) having an outer surface (11);

a vibration suppressing member (2) provided on the outer surface (11), the vibration suppressing member (2) extending in an axial direction (X) of the blade body (1), the vibration suppressing member (2) having an initial state (S0) and a contracted state (S1), the vibration suppressing member (2) being switchable between the initial state (S0) and the contracted state (S1);

wherein in the initial state (S0), the vibration suppressing member (2) expands to a first volume and is capable of turbulent air flow to suppress vibration of the blade body (1), and in the contracted state (S1), the vibration suppressing member (2) is capable of contracting to a second volume, the first volume being larger than the second volume.

2. Blade (100) according to claim 1, wherein the vibration suppressing member (2) comprises a connection seat (21) and a flexible body (22), the connection seat (21) being connected to the outer surface (11), the flexible body (22) being arranged to expand in the initial state (S0) and the flexible body (22) being deformed and contracted in the contracted state (S1).

3. The blade (100) according to claim 2, wherein the flexible body (22) is of solid construction and made of a memory material; or,

The flexible body (22) is of a film structure, the flexible body (22) and the connecting seat (21) are enclosed to form a containing cavity (2 a), the containing cavity (2 a) is filled with gas to expand to the first volume in the initial state (S0), and the containing cavity (2 a) is internally discharged with gas to shrink to the second volume in the shrinkage state (S1).

4. A blade (100) according to claim 3, wherein the vibration suppressing member (2) comprises a vent hole (23), the vent hole (23) being in communication with the receiving cavity (2 a) for switching the vibration suppressing member (2) between the initial state (S0) and the contracted state (S1).

5. The blade (100) according to claim 4, further comprising a vent pipe (3) disposed inside the blade body (1), wherein the outer surface (11) of the blade body (1) is provided with a through hole, one end of the vent pipe (3) extends out of the through hole to communicate with the vent hole (23), and the accommodating chamber (2 a) is filled with gas and discharges gas through the vent hole (23) and the vent pipe (3).

6. The blade (100) according to claim 5, further comprising a reservoir tank (4) arranged inside the blade body (1) and connected to the ventilation duct (3), the reservoir tank (4) being configured to supply gas to the receiving cavity (2 a) through the ventilation duct (3) and to store gas.

7. The blade (100) according to claim 6, wherein the reservoir (4) is filled with a predetermined gas or wherein the reservoir (4) is filled with a reactive substance capable of generating a gas, the reactive substance being capable of generating a gas at a predetermined pressure.

8. Blade (100) according to claim 2, wherein in the initial state (S0) a side of the flexible body (22) facing away from the connection seat (21) is provided with a relief along the axial direction (X).

9. The blade (100) according to claim 8, wherein the flexible body (22) comprises two or more protrusions (221), two or more protrusions (221) being distributed along the axial direction (X), a recess (222) being formed between two adjacent protrusions (221).

10. Blade (100) according to claim 2, wherein the blade (100) further comprises an adapter part (5), the vibration suppressing part (2) being detachably connected to the outer surface (11) of the blade body (1) by means of the adapter part (5).

11. The blade (100) according to claim 10, wherein the adapter member (5) comprises a mating body (51) and a guide wire (52), the guide wire (52) being connected to one of the mating body (51) and the vibration suppressing member (2), the guide wire (52) having an off-state and an on-state; in the power-off state, the vibration suppression component (2) is connected with the outer surface (11) of the blade body (1) through the matching body (51); in the energized state, the guide wire (52) is capable of introducing an electric current and acting on one of the fitting body (51) and the vibration suppressing member (2) such that the vibration suppressing member (2) is disposed apart from the outer surface (11) of the blade body (1).

12. The blade (100) according to claim 11, wherein the mating body (51) comprises a magnet, wherein in the de-energized state the vibration suppressing member (2) is magnetically connected with the outer surface (11) of the blade body (1) by the magnet; in the energized state, the guide wire (52) induces an electric current to the magnet to lose demagnetizing attraction force so as to separate the vibration suppressing member (2) from the outer surface (11) of the blade body (1); or,

the matching body (51) comprises a first connecting adhesive layer, wherein in the power-off state, the vibration suppression component (2) is in adhesive connection with the outer surface (11) of the blade body (1) through the first connecting adhesive layer; in the energized state, the guide wire (52) induces an electric current to the first connection glue layer to lose tackiness, so that the vibration suppressing component (2) is separated from the outer surface (11) of the blade body (1).

13. The blade (100) according to claim 11, wherein the blade body (1) further comprises a lightning receptor (6) and a reservoir connected to the lightning receptor (6) and to the guide wire (52), the reservoir being configured to obtain a current converted by the lightning receptor (6) for transferring the current within a preset range to the guide wire (52).

14. The blade (100) according to claim 10, wherein the adapter member (5) comprises a second connection glue layer (53) and a connection pipe (54), one end of the connection pipe (54) extends into the interior of the blade body (1), the other end is connected to one of the second connection glue layer (53) and the vibration suppressing member (2), and the connection pipe (54) is configured to transmit the gas reacting with the second connection glue layer (53) to the second connection glue layer (53) losing adhesion so as to separate the vibration suppressing member (2) from the outer surface (11) of the blade body (1).

15. Blade (100) according to any one of claims 1 to 14, wherein the vibration suppressing members (2) further comprise connecting wires (24), the number of vibration suppressing members (2) being two or more, the two or more vibration suppressing members (2) being connected by the connecting wires (24) and being distributed at intervals in the axial (X) direction of the blade body (1).

16. The blade (100) according to claim 15, wherein the blade body (1) comprises a root portion (1 a), an intermediate portion (1 b) and a tip portion (1 c) distributed along the axial direction (X), the vibration suppressing member (2) being provided on at least one of the intermediate portion (1 b) and the tip portion (1 c).

17. A wind turbine generator set, comprising:

a hub (110);

the blade (100) according to any of the claims 1 to 16, being connected to the hub (110).