CN217080696U

CN217080696U - Device for reducing noise of blade of wind generating set

Info

Publication number: CN217080696U
Application number: CN202221163939.6U
Authority: CN
Inventors: 姜雪; 李超; 张云天
Original assignee: Beijing Bailing Tiandi Environmental Protection Technology Co ltd
Current assignee: Beijing Bailing Tiandi Environmental Protection Technology Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-07-29
Anticipated expiration: 2032-05-13

Abstract

The utility model belongs to the technical field of noise reduction, and discloses a device for reducing blade noise of a wind generating set, which comprises a base, wherein the top of the base is fixedly connected with a tower frame, the top of the tower frame is fixedly connected with a machine case, the back of the machine case is fixedly connected with a control box, the inner cavity of the machine case is fixedly connected with a generator, the output end of the generator is fixedly connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a stator, the movable plate is driven to move by the contraction of the hydraulic oil cylinder under the combined action of the hydraulic oil cylinder, the movable plate, the fixed plate, a first sliding groove and a second sliding groove, the movable plate moves to drive a sliding block to move in the first sliding groove and the second sliding groove and finally contracts in a hollow groove, the area of the blade is reduced after the movable plate contracts, the contact area with air is reduced, and the noise generated when the blade rotates is reduced, the surrounding environment is protected, and the life of residents is not influenced.

Description

Device for reducing noise of blade of wind generating set

Technical Field

The utility model belongs to the technical field of making an uproar falls, specifically a reduce device of wind generating set blade noise.

Background

The wind generating set comprises a wind wheel and a generator; the wind wheel comprises blades, a hub, a reinforcing member and the like; the wind power generation power supply comprises a wind generating set, a tower frame for supporting the generating set, a storage battery charging controller, an inverter, an unloader, a grid-connected controller, a storage battery pack and the like.

Although the existing wind generating set is convenient to use, some problems still exist, for example; the noise that current wind generating set can produce because rotation and air friction vibrations when rotating can influence near resident's normal life when the noise is too big.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a reduce device of wind generating set blade noise has solved current wind generating set when rotating because the problem of the noise that can produce with air friction vibrations.

In order to achieve the above object, the utility model provides a following technical scheme: a device for reducing the noise of blades of a wind generating set comprises a base, wherein the top of the base is fixedly connected with a tower frame, the top of the tower frame is fixedly connected with a case, the back of the case is fixedly connected with a control box, the inner cavity of the case is fixedly connected with a generator, the output end of the generator is fixedly connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a stator, one end of the rotating rod, which is far away from the generator, penetrates through the case and extends to the outside of the case, one end of the rotating rod, which extends to the outside of the case, is fixedly connected with an impeller, the surface of the impeller is fixedly connected with the blades, the inner cavities of the blades are provided with dead slots, a movable plate is arranged inside the dead slots, two ends of the movable plate are both fixedly connected with sliding blocks, the upper end and the lower end of one side of each blade are both fixedly connected with a fixed plate, and the inner side of the fixed plate is provided with a first sliding slot, the top and the top of the empty groove are both provided with a second sliding groove, the first sliding groove is communicated with the second sliding groove, the surface of the sliding block is in sliding connection with the inner cavities of the first sliding groove and the second sliding groove, one side of the empty groove is fixedly connected with a hydraulic oil cylinder, and the telescopic end of the hydraulic oil cylinder is fixedly connected with one side of the movable plate.

As the utility model discloses a reduce wind generating set blade noise's preferred technical scheme of device, the length of first spout and second spout is the same.

As the utility model discloses a reduce preferred technical scheme of device of wind generating set blade noise, the blade is provided with three groups altogether, three groups the blade is the surface that the circumference array distributes at the impeller.

As the utility model discloses a reduce the preferred technical scheme of device of wind generating set blade noise, one side fixedly connected with abatvoix of dead slot inner chamber.

As the utility model discloses a reduce the preferred technical scheme of device of wind generating set blade noise, the length of abatvoix is the same with the length of dead slot.

As the utility model discloses a reduce the preferred technical scheme of device of wind generating set blade noise, the abatvoix be wooden material.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. through setting up hydraulic cylinder, movable plate, fixed plate, first spout and second spout combined action, at first utilize the hydraulic cylinder shrink to drive the movable plate and remove, the movable plate removes to drive the slider and removes in first spout and second spout, finally contracts in the dead slot, reduces the area of blade after the movable plate shrink, reduces the area of contact with the air to the noise that produces when reducing the blade rotation protects the surrounding environment, can not influence resident's life.

2. Noise generated in the empty groove is absorbed through the sound-absorbing plate, noise generated by the blades is reduced, and the influence on the environment is smaller when the wind generating set is used.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

fig. 2 is a sectional view of the structure of the casing of the present invention;

FIG. 3 is a perspective view of the blade structure of the present invention;

FIG. 4 is a cross-sectional view of the blade structure of the present invention;

fig. 5 is a partial view of a sectional view of the blade structure of the present invention.

In the figure: 1. a base; 2. a tower; 3. a chassis; 4. a control box; 5. a generator; 6. a stator; 7. rotating the rod; 8. an impeller; 9. a blade; 10. an empty groove; 11. moving the plate; 12. a slider; 13. a fixing plate; 14. a first chute; 15. a second chute; 16. a hydraulic cylinder; 17. an acoustic panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 5, a device for reducing blade noise of a wind generating set comprises a base 1, a tower 2 fixedly connected to the top of the base 1, a case 3 fixedly connected to the top of the tower 2, a control box 4 fixedly connected to the back of the case 3, a generator 5 fixedly connected to the inner cavity of the case 3, a rotating rod 7 fixedly connected to the output end of the generator 5, a stator 6 fixedly connected to the outer side of the rotating rod 7, one end of the rotating rod 7 far away from the generator 5 penetrating through the case 3 and extending to the outside of the case 3, an impeller 8 fixedly connected to the end of the rotating rod 7 extending to the outside of the case 3, a blade 9 fixedly connected to the surface of the impeller 8, a hollow 10 formed in the inner cavity of the blade 9, a movable plate 11 disposed inside the hollow 10, sliders 12 fixedly connected to both ends of the movable plate 11, and a fixed plate 13 fixedly connected to both upper end and lower end of one side of the blade 9, first spout 14 has been seted up to the inboard of fixed plate 13, second spout 15 has all been seted up at the top and the top of dead slot 10, first spout 14 is linked together with second spout 15, the surface of slider 12 and the inner chamber sliding connection of first spout 14 and second spout 15, one side fixedly connected with hydraulic cylinder 16 of dead slot 10, hydraulic cylinder 16's flexible end and one side fixed connection of movable plate 11, first spout 14 is the same with the length of second spout 15, blade 9 is provided with three groups altogether, three groups of blades 9 are the surface of circumference array distribution at impeller 8.

In this embodiment, the original complete rotor blade is divided into the existing blade 9 and the moving plate 11, the area of the blade 9 is reduced by the contraction of the moving plate 11, the moving plate 11 is driven to move by the contraction of the hydraulic cylinder 16, the moving plate 11 moves to drive the slider 12 to move in the first sliding groove 14 and the second sliding groove 15, and finally contracts in the empty groove 10, the area of the blade 9 is reduced after the contraction of the moving plate 11, the contact area with air is reduced, so that the noise generated when the blade 9 rotates is reduced, the surrounding environment is protected, and the life of residents is not influenced.

As shown in fig. 4 to 5, a sound-absorbing plate 17 is fixedly connected to one side of the inner cavity of the hollow groove 10, the length of the sound-absorbing plate 17 is the same as that of the hollow groove 10, and the sound-absorbing plate 17 is made of wood.

In this embodiment, noise generated in the empty groove is absorbed and removed by the sound-absorbing plate 17, noise generated by the blades 9 is reduced, and the influence on the environment is smaller when the wind generating set is used.

The working principle and the using process of the utility model are as follows; the moving plate 11 is pushed out through the hydraulic oil cylinder 16 to enable the moving plate and the blades 9 to form a complete rotating sheet to reach the rotating standard, the blades 9 and the moving plate 11 are driven to rotate through the generator 5, when the rotating speed meets the requirement after the blades are rotated to a stable state, the moving plate 11 is driven to move through contraction of the hydraulic oil cylinder 16, the moving plate 11 moves to drive the sliding block 12 to move in the first sliding groove 14 and the second sliding groove 15 and finally contracts into the empty groove 10, the area of the blades 9 is reduced after the moving plate 11 contracts, the contact area with air is reduced, and therefore noise generated when the blades 9 rotate is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A device for reducing blade noise of a wind generating set comprises a base (1) and is characterized in that: the top fixedly connected with pylon (2) of base (1), the top fixedly connected with machine case (3) of pylon (2), the back fixedly connected with control box (4) of machine case (3), the inner chamber fixedly connected with generator (5) of machine case (3), the output fixedly connected with dwang (7) of generator (5), the outside fixedly connected with stator (6) of dwang (7), the one end that generator (5) were kept away from to dwang (7) runs through machine case (3) and extends to the outside of machine case (3), the one end fixedly connected with impeller (8) that dwang (7) extended to the outside of machine case (3), the fixed surface of impeller (8) is connected with blade (9), dead slot movable plate (10) has been seted up to the inner chamber of blade (9), the inside of dead slot (10) is provided with movable plate (11), the improved blade-moving mechanism is characterized in that sliders (12) are fixedly connected to two ends of the moving plate (11), a fixing plate (13) is fixedly connected to the upper end and the lower end of one side of the blade (9), a first sliding groove (14) is formed in the inner side of the fixing plate (13), a second sliding groove (15) is formed in the top and the top of the empty groove (10), the first sliding groove (14) is communicated with the second sliding groove (15), the surface of each slider (12) is connected with inner cavities of the first sliding groove (14) and the second sliding groove (15) in a sliding mode, a hydraulic oil cylinder (16) is fixedly connected to one side of the empty groove (10), and the telescopic end of the hydraulic oil cylinder (16) is fixedly connected with one side of the moving plate (11).

2. The device for reducing the noise of the blade of the wind generating set according to claim 1, wherein: the first sliding chute (14) and the second sliding chute (15) have the same length.

3. The device for reducing the noise of the blade of the wind generating set according to claim 1, wherein: the three groups of blades (9) are arranged, and the three groups of blades (9) are distributed on the surface of the impeller (8) in a circumferential array.

4. The device for reducing the noise of the blade of the wind generating set according to claim 1, wherein: and one side of the inner cavity of the empty groove (10) is fixedly connected with a sound absorption plate (17).

5. The device for reducing the noise of the blade of the wind generating set according to claim 4, wherein: the length of the sound-absorbing plate (17) is the same as that of the empty groove (10).

6. The device for reducing the noise of the blade of the wind generating set according to claim 5, wherein: the sound absorption plate (17) is made of wood materials.