CN202338443U

CN202338443U - Sealing structure for blade of wind driven generator, blade assembly of wind driven generator and wind driven generator

Info

Publication number: CN202338443U
Application number: CN2011205129720U
Authority: CN
Inventors: F·吕特
Original assignee: Vestas Wind Systems AS
Current assignee: Vestas Wind Systems AS
Priority date: 2011-12-09
Filing date: 2011-12-09
Publication date: 2012-07-18
Anticipated expiration: 2021-12-09

Abstract

The utility model discloses a sealing structure (9) for a blade of a wind driven generator, which is used for sealing a gap between the blade (5) and a hub cover (7) of the wind driven generator. The sealing structure (9) comprises a connection structure (11) connected with the periphery of the blade (5) and a matching structure extending from the connection structure (11) to the root of the blade. The matching structure comprises an overlapping structure (12) extending from the outer side of the hub cover (7) and an arm (10) extending from the inner side of the hub cover (7). The utility model further discloses a blade assembly for the wind driven generator and the wind driven generator. According to the sealing structure for the blade of the wind driven generator provided by the utility model, the blade assembly for the wind driven generator and the wind driven generator not only have a simple structure but also have a good sealing effect.

Description

The sealing configuration of blade of wind-driven generator, the blade assembly of wind-driven generator and wind-driven generator

Technical field

The utility model relates to blade assembly and a kind of wind-driven generator of a kind of sealing configuration of blade of wind-driven generator, a kind of wind-driven generator.

Background technique

Wind energy receives increasing concern because of its environment friendly, and wind energy is all being greatly developed in countries in the world at present.

Wind-power electricity generation is transformed into mechanical energy to wind energy exactly, is transformed into mechanical energy the process of electric energy again.The required equipment of wind-power electricity generation generally is referred to as wind-driven generator.Used in the world most of wind-driven generator generally comprises tower tube, cabin and three parts of rotor at present, wherein is provided with equipment such as generator in the cabin, and rotor mainly comprises wheel hub and several blades, for example three blades.Blade pass is crossed its root and is connected on the wheel hub.When wind during to blade, produce aerodynamic force on the blade and drive the rotor rotation, the rotation of rotor finally drives the generator for electricity generation in the cabin.

In order to protect being connected and considering other factors of wheel hub and blade, generally the wheel hub periphery at blade is equipped with hubcap.For the wind-driven generator of needs change oar, because blade need rotate the angle of facining the wind with the change blade with respect to wheel hub, so blade also need be rotated with respect to hubcap.Bearing is housed to be rotated between blade and the wheel hub; But interfere when the relative movement for fear of blade and hubcap; Between hubcap and blade, generally has certain space; This just causes water and other materials to get into hubcap through this space, and then possibly damage on the wheel hub parts with root of blade.

All there are various problems in sealing technique between more existing blades and the hubcap, and for example sealing effect is relatively poor, sealing configuration complicacy etc. too.

The model utility content

The purpose of the utility model is to overcome the defective of above-mentioned existing technology, has proposed a kind of sealing configuration that is used for blade of wind-driven generator, and the sealing structure not only simply and but also effective.

The utility model relates to a kind of sealing configuration that is used for blade of wind-driven generator, is used to seal the gap between said blade and the hub of wind power generator cover, and said sealing configuration comprises: be used for the periphery connection structure connecting with said blade; With the cooperating structure that extends to root of blade from said linkage structure, said cooperating structure is included in bridging arrangement that the outside of said hubcap extends and the arm that extends in the inboard of said hubcap.

The utility model also relates to a kind of blade assembly that is used for wind-driven generator; Comprise blade body and hub of wind power generator cover; Also comprise the sealing configuration that is used to seal the gap between said blade and the hubcap, said sealing configuration comprises: be used for the periphery connection structure connecting with said blade; With the cooperating structure that extends to root of blade from said linkage structure, said cooperating structure is included in bridging arrangement that the outside of said hubcap extends and the arm that extends in the inboard of said hubcap.

In one embodiment, said arm is provided with the baffle plate that extends radially outwardly.Preferably, said baffle plate extends radially outwardly perpendicular to said arm or acutangulates with the side towards said linkage structure of said arm.

In one embodiment, said linkage structure is the form of buckle or clip.

In one embodiment, said linkage structure fits snugly on the periphery of said blade.

The utility model also relates to a kind of wind-driven generator, and it comprises above-mentioned sealing configuration or blade assembly.

The not only simple in structure but also good sealing effect according to the sealing configuration that is used for blade of wind-driven generator of the utility model.

Description of drawings

With reference to accompanying drawing the mode of execution of the utility model is discussed hereinafter, in the accompanying drawings:

Fig. 1 shows the front view of modern wind generator;

Fig. 2 shows the wheel hub of seeing from the place ahead that comprises three blades;

Fig. 3 shows the sealed structural representation between hubcap and the blade; And

Fig. 4 a-4c shows several kinds of examples of seal arrangement.

Embodiment

Fig. 1 shows wind-driven generator 1, and said wind-driven generator 1 comprises the engine rooms of wind power generators 3 on pylon 2 and the top that is positioned at pylon 2.The wind power generator rotor 4 that comprises three blade of wind-driven generator 5 is connected to cabin 3 through the lower velocity shaft that stretches out 3 fronts, cabin.Seal through seal arrangement 9 between the root of hubcap 7 and blade 5.Fig. 2 shows the wind power generator rotor of seeing from the place ahead 4 that comprises hubcap 7 and three blades 5.

Fig. 3 shows a kind of mode of execution of the utility model, wherein the root of blade 5 via bearing (not shown) and fastening piece for example bolt (not shown) etc. be connected on the wheel hub 6, hubcap 7 is connected on the periphery of wheel hub 7 to protect inner wheel hub and miscellaneous part.Between hubcap 7 and blade 5, be provided with seal arrangement 9.Seal arrangement 9 adopts the same structural type of root with blade 5, and for example seal arrangement 9 is forms of seal ring.One end 11 (referring to Fig. 4 a-4c) of seal arrangement 9 closely is engaged on the blade 5 to prevent that seal arrangement 9 from sliding along the length direction of blade 5, prevents simultaneously that foreign material such as rainwater from passing to get into hubcap 7 between seal arrangement 9 and the blade 5.The other end 12 of seal arrangement 9 (referring to Fig. 4 a-4c) at least part overlap joint the outside of hubcap 7 and with hubcap 7 between cooperates so that blade 5 and seal arrangement 9 can freely rotate with respect to hubcap 7 along its axis together.

In this embodiment, an end 12 of itself and hubcap 7 overlap joints of seal arrangement 9 is provided with arm 10.Arm 10 extends to the inboard of hubcap, with the part of overlap joint on hubcap of seal arrangement 9 hubcap 7 is clipped in the middle.

Certainly, seal arrangement 9 can have various variations, and is as shown in Figs. 4a-c.For example in Fig. 4 b, further be provided with the baffle plate 13 that is used to prevent foreign material entering hubcap 7 inside on the arm 10 of seal arrangement 9.Baffle plate 13 more extends radially outwardly perpendicular to arm 13 on the end near hubcap inside from arm 10.Fig. 4 c shows another kind of variations, and wherein the baffle plate 13 perpendicular to arm 13 is replaced by and the acutangulate baffle plate 14 of arm 13 (perhaps more particularly, with the side towards blade tip of arm 13) among Fig. 4 b, thereby can obtain better sealing effect.

Seal arrangement 9 can take various forms to be fixed on the root of blade.For example, seal arrangement 9 can be taked the form of clip, and the form of various clips well known in the art can be applied on this seal arrangement 9.Certainly, also can adopt independent clip to fix seal arrangement 9.In addition, also can the seal arrangement of annular a bit be broken off at place at certain, and the buckle that can combine each other is installed in the cut-off point both sides, and through combining this buckle that seal arrangement 9 is fixed on the root of blade.Because the size of blade is bigger, the diameter of its root possibly reach several meters, therefore also can annular seal 9 be divided into plurality of sections, for example 4 sections, and they are linked together and be fixed on the root of blade through buckle or clip.

More than a kind of sealing configuration in the wind power generating set is described in detail, but above just the principle of the utility model is described in detail with some embodiments, to help to understand the method and the core concept of the utility model.Should be pointed out that for those of ordinary skills under the prerequisite of principle that does not break away from the utility model and thought, can also carry out other forms of modification to the utility model, the form of these modification all falls in the protection domain of the utility model.

Claims

1. a sealing configuration (9) that is used for blade of wind-driven generator is used to seal the gap between said blade (5) and the hub of wind power generator cover (7), it is characterized in that said sealing configuration (9) comprising:

Be used for periphery connection structure connecting (11) with said blade (5); With

From the cooperating structure that said linkage structure (11) is extended to root of blade, said cooperating structure is included in bridging arrangement (12) that the outside of said hubcap (7) extends and the arm (10) that extends in the inboard of said hubcap (7).

2. sealing configuration according to claim 1 is characterized in that, said arm (10) is provided with the baffle plate that extends radially outwardly.

3. sealing configuration according to claim 2 is characterized in that, said baffle plate extends radially outwardly perpendicular to said arm (10) or acutangulates with the side towards said linkage structure (11) of said arm (10).

4. according to each described sealing configuration in the aforementioned claim, it is characterized in that said linkage structure is the form of buckle or clip.

5. blade assembly that is used for wind-driven generator; Comprise blade body (5) and hub of wind power generator cover (7); Also comprise the sealing configuration (9) that is used to seal the gap between said blade (5) and the hubcap (7), it is characterized in that said sealing configuration (9) comprising:

From the cooperating structure that said linkage structure is extended to root of blade, said cooperating structure is included in bridging arrangement (12) that the outside of said hubcap (7) extends and the arm (10) that extends in the inboard of said hubcap (7).

6. blade assembly according to claim 5 is characterized in that, said arm (10) is provided with the baffle plate that extends radially outwardly.

7. blade assembly according to claim 5 is characterized in that, said baffle plate extends radially outwardly perpendicular to said arm (10) or acutangulates with the side towards said linkage structure (11) of said arm (10).

8. according to each described blade assembly in the claim 5 to 7, it is characterized in that said linkage structure is the form of buckle or clip.

9. according to each described blade assembly in the claim 5 to 7, it is characterized in that said linkage structure fits snugly on the periphery of said blade (5).

10. a wind-driven generator is characterized in that, comprises like each described blade assembly in the claim 5 to 7.