CN220452109U - Vibrating bladder assembly and blade assembly - Google Patents

Abstract

The present disclosure provides a vibrating air bag assembly and a blade assembly, suitable for a blade of a wind generating set, the vibrating air bag assembly comprising a cylinder, a slider and an air storage bag, the cylinder having an internal cavity; the sliding block is slidably arranged in the inner cavity of the cylinder body; the air storage bag is provided with an air storage cavity, the air storage cavity is communicated with the inner cavity through an air bag air hole so as to be capable of inflating the air storage bag, the air in the inner cavity is pressed into the air storage bag through the movement of the sliding block in the inner cavity, the air flow on the surface of the blade can be changed when the vibration air bag component is installed on the surface of the blade, the vibration of the blade under the action of external wind force is reduced, the damage caused by excessive vibration of the blade is avoided, and the service life of the blade is prolonged.

Description

Vibrating bladder assembly and blade assembly

Technical Field

The disclosure belongs to the technical field of wind power generation, and particularly relates to a vibration air bag assembly and a blade assembly.

Background

The fan blade is an important part in the wind driven generator, along with the wide application of the wind driven generator and the continuous promotion of the wind driven generator power, the overall dimension specification of the fan blade is bigger and bigger, and great difficulty is brought to the safe transportation of the fan blade, when the existing fan blade is transported, the fan blade vibrates along with the jolt of a road, and the position with severe vibration is damaged in the transportation process due to the bigger dimension of the fan blade.

The fan blade is of a long and flexible structure and has an aerodynamic lift appearance, when the fan blade is stored on the ground, if side wind blows, vortex-induced vibration of the fan blade can be caused, the appearance form is that the blade tip at the far end of the fan blade swings up and down or left and right greatly, and finally local structural damage occurs.

At present, temporary accessories capable of changing the aerodynamic shape of a fan blade are usually arranged on the surface of the fan blade, for example, a vortex-induced vibration prevention device similar to a fishing net is hung, however, the vortex-induced vibration prevention device has a complex structure and a complex installation process.

How to avoid the fan blade to shake during transportation or static, and then avoid the unexpected damage of fan blade, improve the life of fan blade is the technical problem that needs to solve in the art.

Disclosure of Invention

A primary object of the present disclosure is to provide a vibrating bladder assembly and blade assembly to inhibit vibrations from occurring during parking or during transportation of the blade.

For the above purpose, the present disclosure at least provides the following technical solutions:

in one aspect of the present disclosure, a vibrating air bag assembly is provided, suitable for use with a blade of a wind generating set, the vibrating air bag assembly comprising a cylinder, a slider, and an air reservoir, the cylinder having an interior cavity; the sliding block is slidably arranged in the inner cavity of the cylinder body; the gas storage bag is provided with a gas storage cavity, the gas storage cavity is communicated with the inner cavity through a gas bag gas hole so as to be capable of inflating the gas storage bag, and the gas in the inner cavity is pressed into the gas storage bag through the movement of the sliding block in the inner cavity.

According to the embodiment of the disclosure, a first vent hole and a second vent hole are formed in the cavity wall of the inner cavity, the sliding block divides the inner cavity into a first cavity and a second cavity, the first cavity can be communicated with the outside through the second vent hole, the second cavity can be communicated with the outside through the first vent hole, and the second cavity is communicated with the gas storage cavity through the gas bag vent hole.

Optionally, the first vent hole and the gas storage bag are spaced at a predetermined distance along the moving direction of the sliding block, the gas bag vent hole is provided with a one-way valve, and the gas in the second cavity can enter the gas storage cavity through the one-way valve.

Specifically, the first end of cylinder body is provided with the base, the base is used for being connected to on the blade, the second ventilation hole with the base interval sets up, the gas storage bag set up in the second end of cylinder body, the slider is in from first end towards the direction reciprocating motion of second end in the inside cavity.

Further, the check valve comprises a valve seat and a valve core, the valve seat is fixed on the gas storage bag, the valve core can move between a blocking position and an opening position relative to the valve seat, when the sliding block moves towards the gas storage bag and the first vent hole is blocked, the valve core can move to the opening position, and the gas storage cavity is communicated with the second cavity.

According to another exemplary embodiment of the disclosure, the check valve includes a valve core resetting member, and the valve core resetting member is disposed on a side of the valve core, which is opposite to the cylinder, so as to be capable of driving the valve core resetting member to reset to the blocking position.

Optionally, the first vent hole and the second vent hole are arranged at intervals along the moving direction of the sliding block, so that the sliding block can block at most one of the first vent hole and the second vent hole in the moving process.

Optionally, a distance between the second ventilation hole and the base along the moving direction of the slider is not greater than a length of the slider along the moving direction thereof; and/or the number of the groups of groups,

further, the distance between the first vent hole and the air storage bag along the moving direction of the slider is not greater than the length of the slider along the moving direction thereof.

In another exemplary embodiment of the present disclosure, the gas storage bladder is provided with a safety relief valve for controlling the gas pressure of the gas storage bladder to be less than a predetermined value.

In another aspect of the present disclosure, there is provided a blade assembly comprising a blade and a vibrating bladder assembly as described above, the vibrating bladder assembly being disposed on the blade.

Optionally, the vibration air bag component is arranged in the middle or at the tip of the blade along the axial direction of the blade; and/or the vibration airbag assembly is arranged on the windward side and/or the leeward side of the blade.

The vibrating air bag component and the blade component provided by the disclosure have at least the following beneficial effects: when the vibration air bag component is installed on the surface of the blade, the air flow on the surface of the blade can be changed, and the vibration of the blade under the action of external wind force is reduced, so that the damage caused by excessive vibration of the blade is avoided, and the service life of the blade is prolonged.

Drawings

The foregoing and/or other objects and advantages of the disclosure will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a vibrating airbag assembly provided in an exemplary embodiment of the present disclosure.

Fig. 2 is a schematic view of the vibrating air bag assembly of fig. 1 in a first state.

Fig. 3 is a schematic view of the vibrating air bag assembly of fig. 1 in a second state.

Fig. 4 is a schematic view of the vibrating air bag assembly of fig. 1 in a third state.

Reference numerals illustrate:

1. a vibrating air bag assembly; 2. A blade;

11. an air storage bag; 12. A first cavity;

13. a slide block; 14. A one-way valve;

15. a first vent hole; 16. A second vent hole;

17. an air pocket; 18. A base;

19. a second cavity; 141. A valve core;

142. a valve core resetting piece; 143. A valve seat.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments of the present disclosure should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In one aspect of the present disclosure, a vibrating air bag assembly 1 is provided for use with a blade of a wind turbine generator system, and particularly for use with a blade in a parked or stagnant state. When the vibration air bag component 1 is installed on the surface of the blade, the air flow on the surface of the blade can be changed, and the vibration of the blade under the action of external wind force is reduced, so that the damage caused by excessive vibration of the blade is avoided, and the service life of the blade is prolonged.

The present disclosure provides for a blade in a parked or stagnant state, which may be understood as a condition in which the wind turbine is not running, is not generating electricity, and the impeller of the wind turbine is not substantially rotating, such as, but not limited to, the impeller being locked to form an impeller stall, resulting in a blade stall, such as, but not limited to, a shutdown during operation and maintenance of the wind turbine, at which time the impeller will be locked from rotation, at which time the blade may be considered to be a stall. Alternatively, the blade may not have been installed on the wind turbine, such as, but not limited to, the blade being located on a field site, the blade being located on a transport vehicle, and/or the blade being considered to be in a parked or stopped state during a test run.

As wind power generation sets continue to expand, in order to increase the wind area of the blade, the length of the blade is also increased, however, this also results in the blade being more flexible and easy to vibrate, in order to avoid damage caused by excessive vibration of the blade, the present disclosure provides a vibration air bag assembly 1, which is used for being mounted on the blade to change the air flow on the surface of the blade, thereby being capable of suppressing vibration of the blade and improving the safety of the blade.

Referring to fig. 1 to 4, the vibration air bag assembly 1 provided by the present disclosure includes a cylinder body having an inner cavity, a slider 13 and an air storage bag 11, the slider 13 being slidably disposed in the inner cavity of the cylinder body, the air storage bag 11 having an air storage cavity, the air storage cavity being communicated with the inner cavity through an air bag air hole 17, and air in the inner cavity being pressed into the air storage bag 11 by movement of the slider 13 in the inner cavity.

The vibration air bag assembly 1 provided by the disclosure, the air storage bag 11 and the cylinder body are communicated, and the sliding 13 can move relative to the cylinder body, so that gas in the cylinder body can be pressed into the air storage bag 11, the air storage bag 11 is inflated, the shape of the air storage bag 11 is changed, the air flow of the outer surface of the blade is changed by changing the shape of the air storage bag 11, the vibration of the blade is restrained, and the safety of the blade is improved.

In this embodiment, the side wall of the cylinder is provided with a vent hole to facilitate the gas to enter the internal cavity of the cylinder. Specifically, the wall of the internal cavity is provided with a first vent hole 15 and a second vent hole 16, the slider 13 partitions the internal cavity into a first cavity 12 and a second cavity 19, the first cavity 12 can communicate with the outside through the second vent hole 16, the second cavity 19 can communicate with the outside through the first vent hole 15, and the second cavity 19 communicates with the gas storage cavity through the gas bag vent hole 17.

In this embodiment, the first cavity 12 is communicated with the outside through the second ventilation hole 16, and the second cavity 19 is communicated with the outside through the first ventilation hole 15, so that the internal cavity of the cylinder body is communicated with the outside, and the pressure on two sides of the sliding block 13 along the moving direction is equal, so that the moving process of the sliding block 13 is not affected by negative pressure, and the operation reliability of the vibrating air bag assembly 1 is improved.

Specifically, the first cavity 12 and the second cavity 19 are respectively disposed at two sides of the slider 13 along the moving direction, when the slider 13 slides from the first cavity 12 to the second cavity 19, as shown in fig. 2, the space of the first cavity 12 becomes large, the external air enters the first cavity 12 through the second ventilation hole 16, the space of the second cavity 19 becomes small, and the air in the second cavity 19 is discharged to the outside through the first ventilation hole 15, so that the pressure in the first cavity 12 is the same as the pressure in the second cavity 19, and the movement of the slider 13 is not affected by the pressure change in the process. Similarly, when the slider 13 slides from the second cavity 19 toward the first cavity 12, as shown in fig. 4, the space of the second cavity 19 becomes larger, and the external air enters the second cavity 19 through the first vent hole 15, in this process, the space of the first cavity 12 becomes smaller, and the air in the first cavity 12 is discharged to the outside through the second vent hole 16, so that the pressure in the first cavity 12 is the same as the pressure in the second cavity 19, and in this process, the movement of the slider 13 is not affected by the pressure change.

Further, with continued reference to fig. 3, the first vent hole 15 is spaced from the gas storage bag 11 by a predetermined distance along the moving direction of the slider 13, when the slider 13 blocks the first vent hole 15 during the movement of the slider 13, the gas in the second cavity 19 cannot be discharged to the outside through the first vent hole 15, at this time, the slider 13 continues to move along the first cavity 12 toward the second cavity 19, due to the space compression of the second cavity 19, the pressure of the gas in the second cavity 19 increases to open the check valve 14, at this time, the second cavity 19 is communicated with the gas storage cavity, and the gas in the second cavity 19 enters the gas storage bag 11 through the gas bag vent hole 17 to inflate the gas storage bag 11. When the pressure of the gas in the second cavity 19 is not greater than the pressure in the gas storage cavity, the one-way valve 14 is closed, so that the gas in the gas storage bag 11 is prevented from leaking, and the reliability of the vibration gas bag assembly 1 is improved.

As an example, the distance between the first ventilation hole 15 and the air storage bag 11 along the moving direction of the slider 13 is not greater than the length of the slider 13 along the moving direction, but not limited thereto.

When the vibrating air bag module 1 is mounted on the surface of the blade, the blade vibrates under the action of external wind load, and when the blade vibrates towards the first direction, as shown in fig. 2, the first direction is the direction from the first cavity 12 to the second cavity 19, the vibration mechanical energy of the blade becomes the mechanical energy of the sliding block 13, and the sliding block 13 obtains a first speed before the sliding block 13 seals the first vent hole 15.

When the slider 13 closes the first vent hole 15, as shown in fig. 3, the slider 13 will continue to move in the first direction under the action of inertia, and in this process, the gas in the second chamber 19 will be compressed and filled into the gas storage bag 11. As the gas in the gas storage bag 11 increases, the shape of the gas storage bag 11 changes the air flow on the surface of the blade, thereby inhibiting the vibration of the blade and avoiding damage caused by excessive vibration of the blade.

When the blade vibrates in a second direction, as shown in fig. 4, from the second cavity 19 to the first cavity 12, the mechanical energy of the blade will become the mechanical energy of the slider 13, at which time the slider 13 will reset in preparation for the next inflation.

With continued reference to fig. 1-4, the check valve 14 includes a valve seat 143 and a valve spool 141, the valve seat 143 being fixed to the reservoir 11, the valve spool 141 being movable relative to the valve seat 143 between a blocking position and an open position, the valve spool 141 being movable to the open position when the slider 13 is moved towards the reservoir 11 and the first vent 15 is blocked, the reservoir chamber communicating with the second chamber 19.

The check valve 14 comprises a valve core resetting piece 142, and the valve core resetting piece 142 is arranged on one side of the valve core 141, which is opposite to the cylinder body, so that the valve core resetting piece 142 can be driven to reset to a blocking position, and the leakage of gas in the gas storage cavity through the gas bag gas hole 17 is avoided, thereby improving the reliability of the vibration gas bag assembly 1.

In the initial state, the valve core 141 will be blocked at the air hole 17 of the air bag under the action of the valve core resetting piece 142. When the pressure of the gas in the second cavity 19 increases to a value that the pressure of the gas in the second cavity 19 is greater than the pressure of the gas in the second cavity 19 acting on the valve core 141, the valve core 141 leaves the air hole 17 of the air bag to communicate the air storage cavity with the second cavity 19, and at this time, the gas in the second cavity 19 flows into the air storage bag 11. As the gas in the second cavity 19 decreases, the pressure of the gas in the second cavity 19 decreases, and when the pressure of the gas in the second cavity 19 is smaller than the acting force of the valve core resetting member 142, the valve core 141 will be plugged in the air bag air hole 17 again under the action of the valve core resetting member 142, so as to avoid the gas in the gas storage cavity leaking through the air bag air hole 17.

By way of example, the spool return 142 includes a spring, but is not limited thereto.

To facilitate the mounting of the vibrating air bag assembly 1 on the blade, the first end of the cylinder is provided with a base 18, the base 18 is adapted to be connected to the blade 2, the air reservoir 11 is provided at the second end of the cylinder, and the slider 13 is reciprocally movable in the interior cavity from the first end towards the second end.

Referring to fig. 4, in order to avoid the impact of the slider 13 on the end of the cylinder during the movement process, in this embodiment, the second vent holes 16 are spaced from the base 18 along the movement direction of the slider 13, when the slider 13 moves from the second cavity 19 toward the first cavity 12, the slider 13 seals the second vent holes 16, the pressure of the gas in the first cavity 12 will increase, and the gas in the first cavity 12 will be compressed to give the slider 13 a thrust force from the first cavity 12 toward the second cavity 19, so as to slow down the slider 13, and avoid the impact of the slider 13 on the base 18 due to the too fast speed.

Further, the distance between the second ventilation hole 16 and the base 18 along the moving direction of the slider 13 is not greater than the length of the slider 13 along the moving direction thereof, but not limited thereto.

Optionally, the first vent hole 15 and the second vent hole 16 are arranged at intervals along the moving direction of the slider 13, so that the slider 13 can block at most one of the first vent hole 15 and the second vent hole 16 in the moving process, and the phenomenon that the vibration air bag assembly 1 is blocked due to the fact that the slider 13 simultaneously blocks the first vent hole 15 and the second vent hole 16 is avoided.

In order to improve the use safety of the air storage bag 11, the air storage bag 11 is provided with a safety overflow valve, and the safety overflow valve is used for controlling the air pressure of the air storage bag 11 to be smaller than a preset value, so that the air storage bag 11 is prevented from being damaged due to overlarge pressure, and the use reliability of the vibration air bag assembly 1 is further improved.

In another aspect of the present disclosure, a blade assembly is provided, the blade assembly comprising a blade and a vibration bladder assembly 1, the vibration bladder assembly 1 being disposed on a surface of the blade.

The blade subassembly that this disclosure provided has included vibration gasbag subassembly 1, at blade vibration in-process, the gas storage bag 11 of this vibration gasbag subassembly 1 will be inflated for the shape of gas storage bag 11 changes, and then changes the air current on blade surface through gas storage bag 11, and this gas storage bag 11 can destroy the pneumatic appearance of blade promptly, and then plays the effect of restraining blade vibration.

In this embodiment, the vibration bladder assembly 1 is disposed in the middle or tip portion of the blade 2 in the axial direction of the blade 2. In the process of vibration of the blade, the middle part or the blade tip part of the blade 2 vibrates obviously, so the vibration air bag component 1 is arranged at the position where the vibration of the blade 2 is obvious, but the vibration air bag component is not limited to the position.

Alternatively, a plurality of vibration bladder assemblies 1 may be provided on a single blade 2 as desired, such as, but not limited to, a plurality of vibration bladder assemblies 1 being spaced apart along the axial direction of the blade 2. Further, the vibrating bladder assembly 1 is arranged on the windward side and/or leeward side of the blade 2.

The air storage bag 11 with better blade aerodynamic appearance effect can be destroyed, but the air storage bag 11 which can prevent vortex-induced vibration is finally formed by inflating by vibration of the blades without manually inflating and supplementing air in advance.

The air storage bag 11 is a flexible rubber capsule filled with compressed air or water medium; the compressibility of the air and the flowability of the water are used to achieve the spring action.

In the description of the present disclosure, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, and communicatively connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (10)

1. A vibrating air bag assembly adapted for use with a wind turbine blade, said vibrating air bag assembly comprising:

a cylinder having an internal cavity;

a slider (13) slidably disposed in the internal cavity of the cylinder;

the air storage bag (11) is provided with an air storage cavity, the air storage cavity is communicated with the inner cavity through an air bag air hole (17) so as to be capable of inflating the air storage bag (11), and the air in the inner cavity is pressed into the air storage bag (11) through the movement of the sliding block (13) in the inner cavity.

2. Vibrating air bag assembly according to claim 1, characterized in that the cavity wall of the inner cavity is provided with a first vent hole (15) and a second vent hole (16), the slider (13) divides the inner cavity into a first cavity (12) and a second cavity (19), the first cavity (12) being capable of communicating with the outside through the second vent hole (16), the second cavity (19) being capable of communicating with the outside through the first vent hole (15), and the second cavity (19) being in communication with the air storage cavity through the air bag vent hole (17).

3. Vibrating air bag assembly according to claim 2, characterized in that the first vent hole (15) is spaced from the air reservoir (11) by a predetermined distance in the direction of movement of the slider (13), the air bag vent (17) being provided with a one-way valve (14), the air in the second cavity (19) being able to enter the air reservoir through the one-way valve (14).

4. A vibrating air bag assembly according to claim 3, wherein the first end of the cylinder is provided with a base (18), the base (18) being adapted to be connected to the blade (2), the second vent hole (16) being spaced from the base (18), the air reservoir (11) being provided at the second end of the cylinder, the slider (13) being reciprocally movable in the interior cavity from the first end towards the second end.

5. A vibrating air bag assembly according to claim 3, wherein the one-way valve (14) comprises a valve seat (143) and a valve cartridge (141), the valve seat (143) being fixed to the air reservoir (11), the valve cartridge (141) being movable relative to the valve seat (143) between a blocking position and an open position, the valve cartridge (141) being movable to the open position when the slider (13) is moved towards the air reservoir (11) and the first vent (15) is blocked, the air reservoir being in communication with the second chamber (19).

6. The vibrating airbag assembly of claim 5, wherein the check valve (14) includes a spool return member (142), the spool return member (142) being disposed on a side of the spool (141) facing away from the cylinder to enable the spool return member (142) to be driven back to the blocking position.

7. The vibrating airbag assembly of claim 4, wherein the first vent hole (15) and the second vent hole (16) are disposed at intervals along the moving direction of the slider (13) such that the slider (13) can block at most one of the first vent hole (15) and the second vent hole (16) during movement; and/or the number of the groups of groups,

the distance between the second ventilation hole (16) and the base (18) along the moving direction of the sliding block (13) is not greater than the length of the sliding block (13) along the moving direction; and/or the number of the groups of groups,

the distance between the first vent hole (15) and the air storage bag (11) along the moving direction of the sliding block (13) is not greater than the length of the sliding block (13) along the moving direction.

8. Vibrating air-bag assembly according to claim 1, characterized in that the air-bag (11) is provided with a safety relief valve for controlling the air pressure of the air-bag (11) to be less than a predetermined value.

9. A blade assembly, characterized in that it comprises a blade and a vibrating bladder assembly according to any of claims 1-8, which is arranged on the blade (2).

10. The blade assembly according to claim 9, wherein the vibrating bladder assembly is arranged in the axial direction of the blade (2) in the middle or tip portion of the blade (2); and/or the number of the groups of groups,

the vibration airbag assembly is arranged on the windward side and/or the leeward side of the blade (2).