CN211288756U - Labyrinth seal assembly and wind generating set - Google Patents

Abstract

The utility model relates to a labyrinth seal subassembly and wind generating set, wind generating set include first part and second part, and the first part is equipped with the opening, and labyrinth seal subassembly includes: a first seal ring connected to the first member and disposed around an outer periphery of the opening; the sealing structure surrounds the periphery connected with the second component, covers the first sealing ring and is arranged at intervals with the first sealing ring and the first component, and comprises at least one second sealing ring which is sleeved on the peripheral side of the first sealing ring; the third sealing ring and the sealing structure are arranged at intervals, the third sealing ring and the second sealing ring are sequentially and alternately sleeved with each other, and the second sealing ring is arranged between the third sealing ring and the first sealing ring. The embodiment of the utility model provides a labyrinth seal subassembly can prevent that rainwater or dust etc. among the external environment from getting into wind generating set inside.

Description

Labyrinth seal assembly and wind generating set

Technical Field

The utility model relates to a wind-powered electricity generation technical field especially relates to a labyrinth seal subassembly and wind generating set.

Background

The wind generating set adopts the power generation principle that wind power drives blades to rotate, so that a hub connected with the blades rotates, and then a rotor of a generator connected with the hub is driven to rotate relative to a stator, and power generation is realized. The wind generating set is mainly arranged outdoors, for example, the wind generating set is often installed in areas such as seaside, plateau and the like, and the weather environment is severe, so that sealing of the wind generating set is very necessary to prevent rainwater or dust and the like in the external environment from entering the interior of the wind generating set.

At present, sealing structures are generally arranged in two exposed parts on the wind generating set to protect the wind generating set from rain and dust. However, in the prior art, the sealing structure is often unreasonable in design, so that rainwater easily enters the interior of the wind generating set through the sealing structure in a rainy environment, and threats are caused to parts in the wind generating set.

Therefore, a new labyrinth seal assembly and wind turbine generator set are needed.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a labyrinth seal subassembly and wind generating set, labyrinth seal subassembly can seal first part and second part, prevents that rainwater or dust among the external environment etc. from getting into inside the wind generating set.

In one aspect, according to the utility model discloses an embodiment provides a labyrinth seal subassembly for wind generating set, wind generating set includes first part and second part, and the first part is equipped with the opening, and the opening is worn to locate by the second part, and labyrinth seal subassembly includes: a first seal ring connected to the first member and disposed around an outer periphery of the opening; the sealing structure surrounds the periphery connected with the second component, covers the first sealing ring and is arranged at intervals with the first sealing ring and the first component, and comprises at least one second sealing ring which is sleeved on the peripheral side of the first sealing ring; the third sealing ring and the sealing structure are arranged at intervals, the third sealing ring and the second sealing ring are sequentially and alternately sleeved with each other, and the second sealing ring is arranged between the third sealing ring and the first sealing ring.

According to the utility model discloses an aspect has first interval space between first sealing ring and the second part, has second interval space between seal structure and the first sealing ring, has third interval space between second sealing ring and the first part, has fourth interval space between third sealing ring and the seal structure, and first interval space, second interval space, third interval space, fourth interval space communicate each other and form the passageway.

According to the utility model discloses an aspect, seal structure still includes: and the shielding part is connected to the outer peripheral surface of the second component and extends in the direction away from the second component, one end of the second sealing ring is connected with the shielding part, and the other end of the second sealing ring faces the first component.

According to an aspect of the embodiments of the present invention, the shielding portion extends in a direction away from the second member and obliquely toward the first member.

According to the utility model discloses an aspect, seal structure still includes: and a connecting portion connecting the shielding portion and the outer peripheral surface of the second member.

According to an aspect of the embodiment of the present invention, the number of the shielding portion is one, and the shielding portion is connected with at least one second sealing ring; or the number of the shielding parts is more than two, the adjacent shielding parts are connected with each other, and at least one second sealing ring is connected to the shielding parts.

According to the utility model discloses an aspect still includes: the reinforcing ring is sleeved on the outer peripheral face of the first sealing ring, the reinforcing ring and the second sealing ring are arranged at intervals, the reinforcing ring comprises a bending part deviating from the first sealing ring, and the bending part extends along the circumferential direction of the first sealing ring.

According to an aspect of the embodiments of the present invention, the third seal ring has an inner peripheral surface and an outer peripheral surface, and the third seal ring includes a drain hole penetrating the inner peripheral surface and the outer peripheral surface.

According to an aspect of the embodiments of the present invention, the drain holes are arranged along the circumferential array of the third seal ring.

On the other hand, the embodiment of the utility model provides a still provide a wind generating set, include: a first member provided with an opening; the second component penetrates through the opening; as with the labyrinth seal assembly described above, the first seal ring of the labyrinth seal assembly is coupled to the first member and disposed about the periphery of the opening, the seal structure of the labyrinth seal assembly is coupled to the periphery of the second member about the periphery, and the at least one third seal ring of the labyrinth seal assembly is coupled to the first member and disposed about the first seal ring.

According to an aspect of an embodiment of the present invention, the first part is a dome, and the second part is a blade passing through an opening of the dome; or the first component is a cabin cover of the wind generating set, and the second component is a generator arranged on an opening of the cabin cover in a penetrating mode.

According to the utility model provides a labyrinth seal subassembly and wind generating set, labyrinth seal subassembly includes first sealing ring, seal structure and at least one third sealing ring, first sealing ring is connected with the first part and sets up around the open-ended periphery, through with seal structure around connecting in the periphery of second part and cover first sealing ring, seal structure includes at least one second sealing ring, the periphery at first sealing ring is established to the second sealing ring cover, so that seal structure covers the opening, and then make seal structure mutually support with first sealing ring and carry out preliminary sealing between first part and the second part. Simultaneously, because at least one third sealing ring is connected with first part and sets up around first sealing ring, be provided with the second sealing ring between third sealing ring and the first sealing ring for the third sealing ring can be sealed first part and second part further on preliminary sealed basis.

Furthermore, at least one third sealing ring and at least one second sealing ring overlap each other in turn and establish the sealing range that can increase labyrinth seal subassembly to the inside route of entering wind generating set such as effectual external rainwater of extension or dust, thereby carry out better sealed to wind generating set. Meanwhile, the sealing structure, the first sealing ring and the first component are arranged at intervals, and the third sealing ring and the sealing structure are arranged at intervals, so that the first component and the second component can rotate relatively, heat generated in the first component in the running process of the wind generating set can be diffused outwards conveniently, and the running stability of the wind generating set is improved.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly of a labyrinth seal assembly, a first component, and a second component according to an embodiment of the invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic view of an assembly of a labyrinth seal assembly, a first component, and a second component according to another embodiment of the invention;

FIG. 5 is an enlarged view of the assembled structure of the labyrinth seal assembly, the first component, and the second component provided in FIG. 4 at B;

FIG. 6 is an enlarged view at B of the alternative labyrinth seal assembly provided in FIG. 4, showing the assembled configuration of the first and second components;

fig. 7 is a schematic structural diagram of a third sealing ring according to an embodiment of the present invention.

Wherein:

1-a wind generating set;

100-a labyrinth seal assembly; m-hot gas flow;

10-a first sealing ring;

20-a sealing structure; 21-a second sealing ring; 22-a shield; 23-a connecting part;

30-a third seal ring; 31-a drain hole;

40-a reinforcement ring;

200-a first component; 201-opening; 300-a tower drum; 400-a nacelle; 401-a base; 500-second part.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the labyrinth seal assembly and the wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

For better understanding of the present invention, the labyrinth seal assembly 100 and the wind turbine generator set 1 according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 7.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a wind turbine generator system according to an embodiment of the present invention. The embodiment of the utility model provides a wind generating set 1, wind generating set 1 includes first part 200, second part 500 and labyrinth seal subassembly 100, first part 200 is equipped with opening 201, opening 201 is worn to locate by second part 500, wherein, the clearance has between first part 200 and the second part 500, make and to rotate relatively between first part 200 and the second part 500, labyrinth seal subassembly 100 is used for sealing up the clearance between first part 200 and the second part 500, prevent that external rainwater or dust etc. from getting into wind generating set 1 inside.

In some embodiments, the first component 200 is a nacelle, the second component 500 is a blade, and the nacelle is provided with an opening 201, such that the blade can be inserted through the opening 201. Optionally, the first component 200 may also be a nacelle cover, the second component 500 being a generator, the nacelle cover comprising an opening 201 such that the wind turbine can be arranged inside the nacelle cover. Since the labyrinth seal assembly 100 is connected to the nacelle cover and the generator in a similar manner as the labyrinth seal assembly 100 is connected to the blades and the nacelle, the first member 200 is taken as the nacelle cover and the second member 500 is taken as the blade for example.

It can be understood that the wind generating set 1 of the embodiment of the present invention further includes a tower 300, a nacelle 400 disposed on the tower 300, a base 401 connected to the nacelle 400, and an impeller, the impeller includes a hub and blades connected to the hub, the generator includes a rotor and a stator, which facilitates converting wind energy into kinetic energy and reliably transmitting the kinetic energy to the rotor of the generator, so that the generator generates electricity.

In order to seal the first member 200 and the second member 500, the labyrinth seal assembly 100 may adopt different structural forms as long as the sealing between the first member 200 and the second member 500 can be satisfied, and in some alternative examples, the following structural forms may be adopted.

Referring to fig. 2 to 7 together, fig. 2 is a schematic view illustrating an assembly structure of a labyrinth seal assembly, a first component and a second component according to an embodiment of the present invention, and fig. 3 is an enlarged view of a portion a in fig. 2; fig. 4 shows a schematic view of an assembly structure of a labyrinth seal assembly, a first component and a second component provided by another embodiment of the present invention, fig. 5 shows an enlarged view of an assembly structure of a labyrinth seal assembly, a first component and a second component provided by fig. 4 at B, fig. 6 shows an enlarged view of an assembly structure of another labyrinth seal assembly, a first component and a second component provided by fig. 4 at B, and fig. 7 shows a schematic view of a structure of a third seal ring provided by an embodiment of the present invention.

The embodiment of the utility model provides a labyrinth seal subassembly 100 can be used for the wind generating set 1 of above-mentioned embodiment. The labyrinth seal assembly 100 includes a first seal ring 10, a seal structure 20, and at least one third seal ring 30. The first seal ring 10 is coupled to the first member 200 and disposed around the outer circumference of the opening 201, the seal structure 20 is coupled to the second member 500 around the outer circumference, and the seal structure 20 covers the first seal ring 10 and is disposed spaced apart from the first seal ring 10 and the first member 200. The seal structure 20 includes at least one second seal ring 21, and the second seal ring 21 is fitted around the outer peripheral side of the first seal ring 10. At least one third sealing ring 30 is connected with the first component 200 and is arranged around the first sealing ring 10, the third sealing ring 30 and the sealing structure 20 are arranged at intervals, the third sealing ring 30 and the second sealing ring 21 are sequentially and alternately sleeved with each other, and the second sealing ring 21 is arranged between the third sealing ring 30 and the first sealing ring 10.

According to the utility model provides a labyrinth seal subassembly 100 can prolong external rainwater or dust and get into the inside route of wind generating set 1, and the clearance to between first part 200 and the second part 500 that can be better seals. Meanwhile, the sealing structure 20, the first sealing ring 10 and the first component 200 are arranged at intervals, and the third sealing ring 30 and the sealing structure 20 are arranged at intervals, so that the relative rotation between the first component 200 and the second component 500 is facilitated, heat generated in the first component 200 by the wind generating set 1 in the operation process is facilitated to be diffused to the external environment, and the operation stability of the wind generating set 1 is improved.

In specific implementation, the first seal ring 10, the seal structure 20 and the at least one third seal ring 30 are all ring-shaped structures, and the first seal ring 10 can be integrally formed with the first component 200, so that the manufacturing efficiency of the labyrinth seal assembly 100 is improved. Since the sealing structure 20 covers the first sealing ring 10, the second sealing ring 21 and the third sealing ring 30 are spaced from each other and are in a sleeved relationship, so that a plurality of communicated zigzag spaces are formed between the labyrinth seal assembly 100 and the first member 200 and the second member 500 to seal the first member 200 and the second member 500.

Referring to fig. 3, 5 and 6, in some embodiments, a first space is formed between the first sealing ring 10 and the second member 500, a second space is formed between the sealing structure 20 and the first sealing ring 10, a third space is formed between the second sealing ring 21 and the first member 200, a fourth space is formed between the third sealing ring 30 and the sealing structure 20, and the first space, the second space, the third space and the fourth space are communicated with each other to form a channel. Due to the fact that the channel is directly communicated with the external environment, heat generated by the wind turbine generator system 1 inside the first component 200 during operation can be conducted out of the channel through the arrangement. At the same time, the outside air can also enter the interior of the wind turbine generator system 1 from the passage to exchange heat with the air inside the first component 200.

When the first component 200 is the nacelle and the second component 500 is the blade, the blade drives the hub to rotate during the rotation process, the blade and the hub generate heat during the rotation process, and a channel communicated with the external environment is formed among the labyrinth seal assembly 100, the first component 200 and the second component 500, so that the heat generated by the rotation of the blade and the hub is led out to the external environment through the channel, for example, the heat can be led out to the external environment through the channel in the form of hot air flow M, and the damage of parts of the wind generating set 1 caused by the excessive temperature inside the nacelle is prevented.

In specific implementation, referring to fig. 3, the number of the at least one third sealing ring 30 may be one, the number of the second sealing ring 21 in the sealing structure 20 is one, and the third sealing ring 30 is sleeved on the outer peripheral side of the second sealing ring 21, so that the sealing performance of the labyrinth seal assembly 100 can be effectively improved compared to the conventional method in which only one sealing member is disposed on the vane and another sealing member is disposed on the air guide sleeve. Furthermore, since the third seal ring 30 is arranged on the outer peripheral side of the second seal ring 21, the gap between the third seal ring 30 and the second seal ring 21 is small, rainwater can be prevented from splashing into the first component 200 from the space between the first seal ring 10 and the second seal ring 21, and the rainwater corrosion risk of equipment in the impeller is reduced.

In some embodiments, the sealing structure 20 further includes a shielding portion 22, the shielding portion 22 is connected to the outer circumferential surface of the second member 500 and extends in a direction away from the second member 500, one end of the second sealing ring 21 is connected to the shielding portion 22, and the other end of the second sealing ring 21 faces the first member 200. Through the arrangement, when the wind generating set 1 is in a rainy environment, the falling rainwater can be guided by the shielding part 22, and the rainwater is prevented from entering the first component 200, namely the inside of the air guide sleeve.

In some embodiments, the curtain 22 extends away from the second member 500 and obliquely towards the first member 200. Through the arrangement, the shielding part 22 can have a good flow guiding effect, and the condition that rainwater is accumulated is prevented. When wind generating set 1 is in the shutdown state, through rationally setting up shielding portion 22, can make the rainwater landing under the water conservancy diversion effect, prevent that the rainwater from falling into inside wind generating set 1.

In some embodiments, the sealing structure 20 further includes a connecting portion 23, and the connecting portion 23 connects the shielding portion 22 with the outer circumferential surface of the second member 500. By arranging the connecting portion 23 on the sealing structure 20, the connecting portion 23 is sleeved on the outer peripheral surface of the second member 500 and is connected with the second member 500, the connecting area between the sealing structure 20 and the second member 500 can be increased, the sealing stability of the sealing structure 20 is increased, and the sealing structure 20 is prevented from being separated from the second member 500 due to stress of rainwater on the sealing structure 20.

In some embodiments, the number of the shielding portion 22 is one, and at least one second sealing ring 21 is connected to the shielding portion 22; alternatively, the number of the shielding portions 22 is two or more, the adjacent shielding portions 22 are connected to each other, and at least one second sealing ring 21 is connected to the shielding portion 22. With the above arrangement, the seal structure 20 can be made to seal the first member 200 and the second member 500 well.

In practical implementation, referring to fig. 5, the number of the shielding portion 22 is one, two second sealing rings 21 are disposed on a surface of the shielding portion 22 facing the first component 200, and the two second sealing rings 21 are sequentially spaced along a radial direction of the labyrinth seal assembly 100. It is understood that the number of the second sealing rings 21 provided on the shielding portion 22 can be set according to the user's requirement, and can be three, four or more. Along with the increase of the number of the second sealing rings 21, the second sealing rings 21 and the third sealing rings 30 are sequentially and alternately sleeved with each other, so that the length of the channel in the labyrinth seal assembly 100 can be effectively increased, the sealing path can be further prolonged, and external rainwater or dust and the like can be effectively prevented from entering the first component 200.

Referring to fig. 6, the number of the shielding portions 22 is two, each shielding portion 21 is provided with one second sealing ring 21, two adjacent shielding portions 22 are connected to each other, the number of the third sealing rings 30 is two, and the second sealing rings 21 and the third sealing rings 30 are sequentially and alternately sleeved with each other. Optionally, there can be a partial overlap between two adjacent shielding portions 22, so as to increase the connection stability between the shielding portions 22. Through the above arrangement, the length of the passage in the labyrinth seal assembly 100 can be effectively increased, and the sealing path can be further extended.

In some embodiments, the labyrinth seal assembly 100 further includes a reinforcing ring 40, the reinforcing ring 40 is sleeved on the outer peripheral surface of the first sealing ring 10, the reinforcing ring 40 is disposed at an interval with the second sealing ring 21, the reinforcing ring 40 includes a bending portion deviating from the first sealing ring 10, and the bending portion extends along the circumferential direction of the first sealing ring 10. Optionally, the reinforcing ring 40 further includes a connecting body, the connecting body is sleeved on the outer periphery of the first sealing ring 10 and connected with the first sealing ring 10, and the bending portion extends towards a direction away from the connecting body and inclined towards the first component 200, so as to effectively prevent rainwater on the outer periphery of the first sealing ring 10 from entering the first component 200 through the opening 201.

In order to prevent a portion of rainwater from entering the channel of the labyrinth seal assembly 100 and accumulating in the channel, in some embodiments, referring to fig. 7, the third sealing ring 30 has an inner circumferential surface and an outer circumferential surface, and the third sealing ring 30 includes a drainage hole 31 penetrating through the inner circumferential surface and the outer circumferential surface. By providing the drain hole 31 on the third sealing ring 30, the rainwater entering the channel can be drained through the drain hole 31, for example, the rainwater is thrown out along the drain hole 31 during the rotation of the second member 500. Meanwhile, the third sealing ring 30 is provided with the drain hole 31, so that heat generated by the blade and the hub in the rotation process can be led out to the outside through the drain hole 31, and a heat dissipation path is further increased through the drain hole 31, so that the wind generating set 1 can dissipate heat better.

In order to enable rainwater, dust, or the like to be effectively discharged, the drain holes 31 are arranged in a circumferential array along the third seal ring 30. Optionally, the drainage holes 31 are uniformly arranged along the circumferential direction of the third sealing ring 30, and through the arrangement, drainage or heat dissipation can be performed in the circumferential direction of the whole labyrinth seal assembly 100, so as to perform all-directional drainage and heat dissipation on the first component 200 and the second component 500 of the wind turbine generator system 1.

In practical application, the drainage hole 31 may be any one or combination of a circular hole, a long hole, and an irregular hole. The drain hole 31 may extend a predetermined distance in a circumferential direction of the third sealing ring 30 to facilitate drainage of rainwater in the passage.

In some embodiments, the material of at least one of the first sealing ring 10, the sealing structure 20 and the third sealing ring 30 in the labyrinth seal assembly 100 includes Fiber Reinforced Plastics (FRP), which is a Fiber Reinforced composite plastic, specifically, a composite material in which glass Fiber and its products, such as glass cloth, tape, felt, yarn, etc., are used as a reinforcing material and synthetic resin is used as a matrix material. Optionally, when the first member 200 is a pod, the pod component material may also include glass reinforced plastic. Through the material of reasonable setting labyrinth seal subassembly 100, can make labyrinth seal subassembly 100 have light, anticorrosive and easy fashioned characteristic, be convenient for use labyrinth seal subassembly 100 in wind generating set 1's other environment that need seal, and do not influence the holistic operation of wind generating set 1.

In summary, according to the labyrinth seal assembly 100 provided by the embodiment of the present invention, the labyrinth seal assembly 100 includes the first seal ring 10, the seal structure 20 and the at least one third seal ring 30, the first seal ring 10 is connected with the first component 200 and is disposed around the periphery of the opening 201, the seal structure 20 is disposed around the periphery connected to the second component 500 and covers the first seal ring 10, the seal structure 20 includes the at least one second seal ring 21, the second seal ring 21 is sleeved on the periphery of the first seal ring 10, so that the seal structure 20 covers the opening 201, and further the seal structure 20 and the first seal ring 10 are mutually matched to perform the primary sealing between the first component 200 and the second component 500. Meanwhile, since at least one third sealing ring 30 is connected with the first component 200 and is disposed around the first sealing ring 10, and the second sealing ring 21 is disposed between the third sealing ring 30 and the first sealing ring 10, the third sealing ring 30 can further seal the first component 200 and the second component 500 on the basis of primary sealing.

Further, at least one third sealing ring 30 and at least one second sealing ring 21 overlap each other in turn and establish the sealed scope that can increase labyrinth seal subassembly 100 to the inside route of external rainwater or dust etc. entering wind generating set 1 of effectual extension, thereby carry out better sealed to wind generating set 1. Meanwhile, the sealing structure 20 is arranged at intervals with the first sealing ring 10 and the first component 200, and the third sealing ring 30 is arranged at intervals with the sealing structure 20, so that relative rotation between the first component 200 and the second component 500 is facilitated, heat generated inside the first component 200 in the operation process of the wind generating set 1 is facilitated to be diffused outwards, and the operation stability of the wind generating set 1 is improved. Moreover, the utility model discloses labyrinth seal subassembly 100's simple structure easy production preparation, and sealed effectual, do not need often to maintain the change.

And the embodiment of the utility model provides a wind generating set 1 because of its labyrinth seal subassembly 100 that includes above-mentioned each embodiment, can effectively seal first part 200 and second part 500, improves the stability of spare part operation among the wind generating set 1, and then guarantees wind generating set 1's the benefit of generating electricity, and the facilitate promotion is used.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A labyrinth seal assembly (100) for a wind power plant (1), said wind power plant (1) comprising a first component (200) and a second component (500), said first component (200) being provided with an opening (201), said second component (500) being arranged through said opening (201), said labyrinth seal assembly (100) comprising:

a first sealing ring (10) connected to the first member (200) and disposed around an outer periphery of the opening (201);

a sealing structure (20) surrounding an outer periphery connected to the second member (500), the sealing structure (20) covering the first sealing ring (10) and being disposed at a distance from the first sealing ring (10) and the first member (200), the sealing structure (20) including at least one second sealing ring (21), the second sealing ring (21) being fitted over an outer peripheral side of the first sealing ring (10);

at least one third sealing ring (30) is connected with the first component (200) and surrounds the first sealing ring (10), the third sealing ring (30) and the sealing structure (20) are arranged at intervals, the third sealing ring (30) and the second sealing ring (21) are sequentially and alternately sleeved with each other, and the second sealing ring (21) is arranged between the third sealing ring (30) and the first sealing ring (10).

2. The labyrinth seal assembly (100) as recited in claim 1, characterized in that a first clearance space is provided between the first seal ring (10) and the second member (500), a second clearance space is provided between the seal structure (20) and the first seal ring (10), a third clearance space is provided between the second seal ring (21) and the first member (200), and a fourth clearance space is provided between the third seal ring (30) and the seal structure (20), and the first clearance space, the second clearance space, the third clearance space and the fourth clearance space are communicated with each other to form a channel.

3. The labyrinth seal assembly (100) of claim 1, wherein the seal structure (20) further comprises:

and a shielding portion (22) connected to the outer peripheral surface of the second member (500) and extending in a direction away from the second member (500), wherein one end of the second seal ring (21) is connected to the shielding portion (22), and the other end of the second seal ring (21) faces the first member (200).

4. The labyrinth seal (100) of claim 3, characterized in that the curtain (22) extends away from the second part (500) and obliquely towards the first part (200).

5. The labyrinth seal assembly (100) of claim 3, wherein the seal structure (20) further comprises:

and a connecting portion (23) that connects the shielding portion (22) to the outer peripheral surface of the second member (500).

6. The labyrinth seal assembly (100) according to claim 3, characterized in that said shade (22) is one in number, said shade (22) having at least one second sealing ring (21) associated therewith;

or the number of the shielding parts (22) is more than two, the adjacent shielding parts (22) are connected with each other, and at least one second sealing ring (21) is connected to each shielding part (22).

7. The labyrinth seal assembly (100) of any one of claims 1 to 6, further comprising:

a reinforcing ring (40) sleeved and connected on the peripheral surface of the first sealing ring (10), wherein the reinforcing ring (40) and the second sealing ring (21) are arranged at intervals,

the reinforcement ring (40) comprises a bend facing away from the first sealing ring (10), which bend extends in the circumferential direction of the first sealing ring (10).

8. The labyrinth seal assembly (100) as recited in any one of claims 1 to 6, characterized in that the third sealing ring (30) has an inner circumferential surface and an outer circumferential surface, the third sealing ring (30) comprising a drainage hole (31) extending through the inner and outer circumferential surfaces.

9. The labyrinth seal assembly (100) according to claim 8, characterized in that the drainage holes (31) are arranged in a circumferential array along the third sealing ring (30).

10. A wind power plant (1), characterized by comprising:

a first part (200), said first part (200) being provided with an opening (201);

a second part (500), said second part (500) being arranged through said opening (201);

the labyrinth seal assembly (100) as claimed in any one of claims 1 to 9, a first sealing ring (10) of the labyrinth seal assembly (100) being connected to the first part (200) and being arranged around the periphery of the opening (201), a sealing structure (20) of the labyrinth seal assembly (100) being connected around the periphery of the second part (500), at least one third sealing ring (30) of the labyrinth seal assembly (100) being connected to the first part (200) and being arranged around the first sealing ring (10).

11. Wind park (1) according to claim 10, wherein the first component (200) is a nacelle and the second component (500) is a blade passing through the opening (201) of the nacelle;

or, the first component (200) is a cabin cover of the wind generating set (1), and the second component (500) is a generator arranged on the opening (201) of the cabin cover in a penetrating mode.

Images