CN219221139U

CN219221139U - Blade damper of wind generating set

Info

Publication number: CN219221139U
Application number: CN202320792967.2U
Authority: CN
Inventors: 王磊; 王文龙; 田辉; 孙瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-20
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind generating set blade damper which comprises a sleeve, wherein a first mass block is arranged in the sleeve in a sliding manner, both ends of the first mass block are connected with first springs, one end of the first mass block is fixedly connected with a connecting column, the connecting column extends to the outer side of the sleeve and is fixedly connected with a round seat, a round groove is formed in the middle position inside the round seat, a circular plate is connected in a sealing and rotating manner inside the round groove, one end of the circular plate is fixedly connected with a rotating column, the other end of the rotating column extends to the outer side of the round seat, and arc grooves are formed in the top end and the bottom end of the round groove; the wind turbine generator system has the effects of damping the force in the torsion direction of the wind turbine generator system blades, so that the wind turbine generator system blades are prevented from twisting in the working process, the wind turbine generator system blades are prevented from being twisted off due to the fact that the wind turbine generator system blades are subjected to large torsion force, and the use practicability of the wind turbine generator system blades is reduced.

Description

Blade damper of wind generating set

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a blade damper of a wind generating set.

Background

With the continuous development of wind power technology, the single power of the wind generating set is larger and larger, the blades are the most main components for converting wind energy into kinetic energy of the wind generating set, and with the increase of the power of the wind generating set, the blades are longer and longer, and the lengths of the blades of many wind generating set manufacturers are more than hundred meters. Although the limit and fatigue strength of the blade are checked in the design process, and resonance with a unit is avoided, resonance phenomenon generated by wind speed vortex-induced vibration in the operation process cannot be avoided. After the length of the blade is increased, the frequency of the blade in the shimmy direction is low, the rigidity is high, the damping is low, therefore, the blade can easily resonate with vortex-induced vibration frequency in the shimmy direction, the damping in the blade shimmy direction is low, the amplitude cannot be effectively reduced, the fatigue load of the blade is increased, the fatigue life of the blade is seriously influenced, and the amplitude is reduced by installing a corresponding damper in the blade.

According to the utility model, the Chinese patent No. CN202220026754.4 discloses a damper applied to a blade of a wind generating set and the blade of the wind generating set, wherein the damper comprises a mass block, springs, damping liquid, a sleeve and a winding pipe, the mass block and the springs are arranged in the sleeve, the mass block is arranged in the middle of the sleeve, through holes penetrating through two side surfaces of the mass block are formed in the mass block, the springs are two and are arranged on two sides of the mass block, the winding pipe is communicated with two ends of the sleeve and is wound outside the sleeve, the damping liquid is filled in the sleeve and an inner cavity of the winding pipe, when the damper is used, the frequency of the damper can be effectively adjusted by adjusting the stiffness coefficient of the spring, the weight of the mass block, the aperture of the through hole and the diameter of the winding pipe, so that the frequency of the damper is consistent with the blade shimmy direction frequency of the wind generating set, the damping of the blade of the wind generating set is increased, the resonance of the blade of the wind generating set due to vortex-induced vibration is effectively inhibited, the damage of the blade due to the vortex-induced vibration is further slowed down, the problem of the resonance fatigue of the blade of the large wind generating set is solved, the effect of the blade is exerted in the rotating process, the external force is exerted, the blade is turned, when the torsion is easy, the blade is turned, the torsion is easy, the blade is deformed, even the blade is not convenient to break, and the damper is not convenient to use, and the damper is reduced.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a wind generating set blade damper for solving the problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the wind generating set blade damper comprises a sleeve, wherein a first mass block is arranged in the sleeve in a sliding manner, two ends of the first mass block are connected with first springs, one end of the first mass block is fixedly connected with a connecting column, and the connecting column extends to the outer side of the sleeve and is fixedly connected with a round seat;

the middle position inside the round seat is provided with a round groove, the inside of the round groove is connected with a circular plate in a sealing and rotating manner, one end of the circular plate is fixedly connected with a rotary column, the other end of the rotary column extends to the outer side of the round seat, the top end and the bottom end of the round groove are respectively provided with an arc groove, the top end and the bottom end of the circular plate are respectively fixedly connected with a second mass block, the two second mass blocks are respectively in sliding fit with the two arc grooves, and the two ends of the second mass blocks are connected with the side ends of the arc grooves through spring pieces;

damping fluid is poured into the sleeve and the two arc grooves.

Preferably, the spring piece includes the telescopic link, the equal fixedly connected with first connecting seat in both ends of telescopic link, the outside cover of telescopic link is equipped with the second spring, the both ends of second spring respectively with the side fixed connection of two first connecting seats, all rotate on two first connecting seats and be connected with the second connecting seat, two second connecting seats respectively with the two side fixed connection of arc groove.

Further, the connecting column is in sealing sliding fit with the sleeve.

Still further, telescopic side and the side of swivel post all fixedly connected with mounting panel, all be connected with the inside mount of wind generating set blade through the bolt on two mounting panels.

In a further scheme, a plurality of through holes are formed in the first mass block and the second mass block.

(III) beneficial effects

Compared with the prior art, the utility model provides the wind generating set blade damper, which has the following beneficial effects:

this wind generating set blade attenuator plays damped effect to wind generating set blade swing through the cooperation of the inside damping fluid of first quality piece, first spring, spliced pole and sleeve, plays damped effect to wind generating set blade self torsion direction's of wind generating set blade through circle seat, plectane, two second quality pieces and spring part cooperation, avoids wind generating set blade self torsion at the in-process of work, avoids wind generating set blade to receive great torsion's force to lead to wind generating set blade torsion, has reduced the practicality of its use.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model in connection with a wind turbine blade;

FIG. 3 is a schematic cross-sectional side view of the connection of the circular base, circular plate, spring member and second mass of the present utility model;

fig. 4 is a schematic cross-sectional side view of the sleeve of the present utility model coupled to a first mass.

In the figure: 1. a sleeve; 2. a first mass; 3. a first spring; 4. a connecting column; 5. a circular plate; 6. a rotating column; 7. a second mass; 8. damping fluid; 9. a telescopic rod; 10. a first connection base; 11. a second spring; 12. a second connecting seat; 13. a mounting plate; 14. a bolt; 15. a fixing frame; 16. a through hole; 17. and a round seat.

Detailed Description

Examples

Referring to fig. 1-4, a wind turbine blade damper comprises a sleeve 1, wherein a first mass block 2 is slidably arranged in the sleeve 1, the first mass block 2 is provided with a square structure, both ends of the first mass block 2 are connected with a first spring 3, the right end of the first mass block 2 is fixedly connected with a connecting column 4, the connecting column 4 is in sealing sliding fit with the sleeve 1, one end of the connecting column 4 extending to the right side of the sleeve 1 is fixedly connected with a circular seat 17, and the damping liquid 8 in the sleeve 1 is matched with the first mass block 2, the first spring 3 and the connecting column 4 to play a damping effect on wind turbine blade swinging;

the inside intermediate position of circle seat 17 is provided with the circular slot, the inside sealed rotation in circular slot is connected with plectane 5, the one end fixedly connected with swivel post 6 of circular plate 5, the other end of swivel post 6 extends to the right side of circle seat 17, the top and the bottom in circular slot all are provided with the arc wall, damping fluid 8 has all been poured to the inside of sleeve 1 and the inside in two arc walls, the equal fixedly connected with second mass piece 7 of top and bottom of plectane 5, all be provided with a plurality of through-holes 16 on first mass piece 2 and the second mass piece 7, be convenient for the circulation of damping fluid 8 through the through-hole 16, two second mass pieces 7 respectively with two arc wall sliding fit, the both ends of second mass piece 7 are connected with the side of arc wall through the spring part, through circular seat 17, plectane 5, two second mass pieces 7, the spring part plays the effect of damping fluid 8's cooperation to wind generating set blade self torsion direction's of wind generating set, avoid wind generating set blade self torsion in the process of work, avoid wind generating set blade to receive great torsional power generating set blade to lead to the wind generating set blade to break, its practicality has been reduced.

Referring to fig. 3, the spring member includes a telescopic rod 9, two ends of the telescopic rod 9 are fixedly connected with first connecting seats 10, a second spring 11 is sleeved outside the telescopic rod 9, two ends of the second spring 11 are fixedly connected with side ends of the two first connecting seats 10 respectively, two first connecting seats 10 are rotatably connected with second connecting seats 12 respectively, and the two second connecting seats 12 are fixedly connected with two side ends of the arc-shaped groove respectively.

Referring to fig. 2, the side ends of the sleeve 1 and the side ends of the rotary column 6 are fixedly connected with mounting plates 13, and the two mounting plates 13 are connected with a fixing frame 15 inside the wind turbine blade through bolts 14, so that the damper is conveniently mounted inside the wind turbine blade.

In sum, this wind generating set blade damper, when using, install this attenuator on the corresponding mount 15 of wind generating set blade inside through bolt 14, play the damped effect to wind generating set blade swing through the cooperation of the damping fluid 8 of first quality piece 2, first spring 3, spliced pole 4 and sleeve 1 inside, avoid wind generating set blade swing rupture, play the damped effect to wind generating set blade self torsion direction's power through the cooperation of circle seat 17, plectane 5, two second quality pieces 7, spring part and the inside damping fluid 8 of arc groove, avoid wind generating set blade self torsion at the in-process of work, avoid wind generating set blade to receive great torsion's power to lead to wind generating set blade to twist off.

Claims

1. The utility model provides a wind generating set blade attenuator, includes sleeve, its characterized in that: the inner part of the sleeve is slidably provided with a first mass block, both ends of the first mass block are connected with first springs, one end of the first mass block is fixedly connected with a connecting column, and the connecting column extends to the outer side of the sleeve and is fixedly connected with a round seat;

damping fluid is poured into the sleeve and the two arc grooves.

2. A wind generating set blade damper as defined in claim 1, wherein: the spring piece includes the telescopic link, the equal fixedly connected with first connecting seat in both ends of telescopic link, the outside cover of telescopic link is equipped with the second spring, the both ends of second spring respectively with the side fixed connection of two first connecting seats, all rotate on two first connecting seats and be connected with the second connecting seat, two second connecting seats respectively with the two side fixed connection of arc groove.

3. A wind generating set blade damper as defined in claim 1, wherein: the connecting column is in sealing sliding fit with the sleeve.

4. A wind generating set blade damper as defined in claim 1, wherein: the side ends of the sleeve and the side ends of the rotary column are fixedly connected with mounting plates, and the two mounting plates are connected with a fixing frame inside the wind generating set blade through bolts.

5. A wind generating set blade damper as defined in claim 1, wherein: and a plurality of through holes are formed in the first mass block and the second mass block.