Dustproof and waterproof structure for blade opening of wind driven generator

Abstract

The utility model relates to a dustproof and waterproof structure for a blade opening of a wind driven generator, which comprises a flow guide cover and a sealing structure, the sealing structure is arranged on the flow guide cover, the blade opening is arranged on the flow guide cover, the sealing structure comprises a waterproof piece and a dustproof piece, and the waterproof piece and the dustproof piece cover the blade opening. Compared with the prior art, the rain-proof and dust-proof effects are better, and the transportation cost of the blades is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust and water proofing of wind turbine generators, and relates to a dust and water proofing structure for a blade opening of a wind turbine generator. Background Art

[0002] Existing wind turbine blades and the blade openings of the guide shroud mostly use a sealing solution of adding a rain shield ring on the outside of the blade root. However, as the power of the wind turbine increases, the diameter of the blade root also gradually increases. The outer rain shield ring increases the transportation cost of the blades, and some sections of the road cannot meet the passing requirements.

[0003] One solution is to add a sealing ring structure to the inner side of the blade mouth of the guide cover to achieve dust and water resistance, but the disadvantage is that it takes up more space at the blade mouth and may collide with the root of the blade when the blade is installed and docked.

[0004] Another solution is to add an outer soft retaining ring parallel to the blade axis at the blade opening of the air guide cover. In the windless state, there is a gap between the retaining ring and the blade. When the wind blows from the outside, the soft retaining ring fits against the root of the blade to achieve a seal. When the machine is shut down with weak wind or no wind, dust may still float freely and enter the internal space of the fan through the gap. Utility Model Content

[0005] The purpose of the present invention is to provide a wind turbine blade mouth dustproof and waterproof structure in order to overcome at least one defect of the above-mentioned prior art blade mouth dustproof and waterproof structure. The present invention achieves better rain and dustproof effects and saves blade transportation costs.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] One of the technical solutions of the utility model is to provide a dustproof and waterproof structure for the blade opening of a wind turbine generator, the structure comprising a guide cover and a sealing structure, the guide cover is provided with a sealing structure, the guide cover is provided with a blade opening, the sealing structure comprises a waterproof part and a dustproof part, the waterproof part and the dustproof part cover the blade opening.

[0008] Furthermore, a hub is arranged in the deflector, and blades are arranged on the hub.

[0009] Furthermore, the root of the blade extends out of the guide cover from the hub through the blade opening, and the waterproof part and the dustproof part cover the blade opening space between the guide cover and the blade.

[0010] Furthermore, the length of the waterproof part and the dustproof part is greater than the annular width of the blade opening between the guide cover and the blade. After the blade is installed, the waterproof part and the dustproof part have a certain interference with the blade to ensure the sealing effect.

[0011] Furthermore, the waterproof component is made of rubber.

[0012] Furthermore, the dustproof part adopts a brush.

[0013] Since the waterproof and dustproof parts are made of soft materials, they can resist the deformation of the roots of the blades and directly seal the blade openings without taking up too much blade opening space or causing collision damage to the blades.

[0014] Furthermore, the sealing structure also includes a base, on which a waterproof component and a dustproof component are provided.

[0015] Furthermore, the base is arranged at the edge of the blade opening, and the base of the sealing structure is fixed to the blade opening of the air guide cover by fasteners.

[0016] As a preferred technical solution, the fasteners are bolts.

[0017] Furthermore, the shape of the base is F-shaped, and a card slot is provided in the base, and a waterproof part and a dustproof part are installed in the card slot.

[0018] Furthermore, the other end of the base not provided with the slot is fixed to the air deflector by a fastener.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] (1) The utility model fastens the dustproof part and the waterproof part on the outer side of the blade opening of the guide cover, and realizes dustproof / waterproof sealing by the interference between the dustproof part and the waterproof part and the blade root. At the same time, the dustproof part and the waterproof part are both made of soft materials, and can deform by resisting the blade root to directly seal the blade opening, thereby achieving a good rainproof and dustproof effect. It does not need to rely on wind deformation to seal, which leads to poor rainproof and dustproof effect when the machine is shut down in weak wind or no wind state;

[0021] (2) The utility model can replace the rain shield ring structure on the outside of the blade root. The separated small-sized base, dustproof parts and waterproof parts are conducive to saving the transportation cost of the blades. At the same time, the base occupies very little space at the blade mouth, and the existing guide cover mold does not need to be modified;

[0022] (3) The utility model is suitable for the blade opening of the guide cover of a large-megawatt large-blade wind turbine generator set, and is used to prevent rain and dust during the operation of the set. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the blade opening of a wind turbine generator in an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the dust and water proof structure of the blade opening of a wind turbine in an embodiment of the utility model.

[0025] Description of the markings in the figure:

[0026] 1—air guide cover, 11—blade opening, 2—sealing structure, 21—base, 211—card slot, 22—waterproof part, 23—dustproof part, 24—fastener, 3—blade. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are used to describe common objects, and only refer to different instances of the same object, and are not intended to imply that the objects described in this way must adopt a given order, whether in time, space, order or any other manner.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example:

[0031] A wind turbine blade opening dust and water proof structure, such as Figure 1 and Figure 2 As shown, it includes a guide cover 1 and a sealing structure 2. The guide cover 1 is provided with the sealing structure 2. The guide cover 1 is provided with a blade opening 11. The sealing structure 2 includes a waterproof part 22 and a dustproof part 23. The waterproof part 22 and the dustproof part 23 cover the blade opening 11.

[0032] A hub is arranged in the deflector 1, and blades 3 are arranged on the hub;

[0033] The root of the blade 3 extends out of the guide cover 1 from the hub through the blade opening 11, and the waterproof part 22 and the dustproof part 23 cover the space of the blade opening 11 between the guide cover 1 and the blade 3;

[0034] The length of the waterproof part 22 and the dustproof part 23 is greater than the annular width of the blade opening 11 between the air guide cover 1 and the blade 3. After the blade 3 is installed, the waterproof part 22 and the dustproof part 23 have a certain interference with the blade 3 to ensure the sealing effect;

[0035] In this embodiment, the waterproof member 22 is made of rubber leather, and the rubber is preferably EPDM rubber;

[0036] In this embodiment, the dustproof member 23 is a brush, and the material of the brush is preferably nylon;

[0037] Since the waterproof member 22 and the dustproof member 23 are made of soft materials, they can deform against the root of the blade 3 and directly seal the blade opening 11 without occupying too much space of the blade opening 11 or causing collision damage with the blade 3;

[0038] The sealing structure 2 further includes a base 21, on which a waterproof component 22 and a dustproof component 23 are provided;

[0039] The base 21 is arranged at the edge of the blade opening 11, and the base 21 of the sealing structure 2 is fixed to the blade opening 11 of the air guide cover 1 by means of a fastener 24;

[0040] In this embodiment, the fasteners 24 are bolts, nuts and washers;

[0041] The shape of the base 21 is F-shaped, and two slots 211 are provided in the base 21, and a waterproof part 22 and a dustproof part 23 are installed in the slots 211;

[0042] The other end of the base 21 where the slot 211 is not provided is fixed to the air deflector 1 through a fastener 24 .

[0043] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A wind turbine blade mouth dust and water proof structure, characterized in that: The structure comprises a shroud (1) and a sealing structure (2); the shroud (1) is provided with the sealing structure (2); the shroud (1) is provided with a blade opening (11); the sealing structure (2) comprises a waterproof part (22) and a dustproof part (23); the waterproof part (22) and the dustproof part (23) cover the blade opening (11).

2. A wind turbine blade mouth dust and water proof structure according to claim 1, characterized in that: A hub is arranged inside the air guide cover (1), and blades (3) are arranged on the hub.

3. A wind turbine blade mouth dust and water proof structure according to claim 2, characterized in that: The root of the blade (3) extends out of the air guide cover (1) from the hub through the blade opening (11), and the waterproof part (22) and the dustproof part (23) cover the space of the blade opening (11) between the air guide cover (1) and the blade (3).

4. A wind turbine blade mouth dust and water proof structure according to claim 3, characterized in that: The lengths of the waterproof part (22) and the dustproof part (23) are greater than the annular width of the blade opening (11) between the air guide cover (1) and the blade (3).

5. A wind turbine blade mouth dust and water proof structure according to claim 1, characterized in that: The waterproof member (22) is made of rubber.

6. A wind turbine blade mouth dust and water proof structure according to claim 1, characterized in that: The dustproof member (23) is a brush.

7. A wind turbine blade mouth dust and water proof structure according to claim 1, characterized in that: The sealing structure (2) further comprises a base (21), on which a waterproof component (22) and a dustproof component (23) are arranged.

8. A wind turbine blade mouth dust and water proof structure according to claim 7, characterized in that: The base (21) is arranged at the edge of the blade opening (11), and the base (21) of the sealing structure (2) is fixed to the blade opening (11) of the air guide cover (1) via a fastener (24).

9. A wind turbine blade mouth dust and water proof structure according to claim 8, characterized in that: The base (21) is in an F-shaped shape, and a slot (211) is provided in the base (21), and a waterproof part (22) and a dustproof part (23) are installed in the slot (211).

10. A wind turbine blade mouth dust and water proof structure according to claim 9, characterized in that: The other end of the base (21) not provided with the slot (211) is fixed to the air deflector (1) via a fastener (24).

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