CN215890328U - Cabin cover and wind generating set - Google Patents

Abstract

The utility model relates to a cabin cover and a wind generating set, wherein the cabin cover comprises: the shell comprises a shell body and an accommodating cavity arranged in the shell body; the housing body is provided with inner wall parts, outer wall parts and a plurality of supporting parts, the inner wall parts are arranged in a spaced mode and are arranged oppositely, the supporting parts are connected between the inner wall parts and the outer wall parts, the inner wall parts face the accommodating cavities, and at least one of the inner wall parts and the outer wall parts and every two adjacent supporting parts jointly enclose to form a weight reducing cavity. According to the engine room cover and the wind generating set provided by the embodiment of the utility model, the engine room cover can meet the requirement of a protection function, and is light in weight and low in production cost.

Description

Cabin cover and wind generating set

Technical Field

The utility model relates to the technical field of wind power, in particular to an engine room cover and a wind generating set.

Background

Wind turbine generators have been developed worldwide for decades, and the main components of the wind turbine generators are a nacelle cover and a tower, a nacelle, a hub, blades, and the like, wherein the nacelle mainly includes a generator, a transformer, a converter, an external nacelle cover, and the like. The cabin cover is a protection structure of the wind generating set and is used for protecting other cabin equipment such as a generator and the like, such as a converter and a transformer, so that the wind generating set can normally work in a severe meteorological environment and protect internal equipment from being damaged by external environmental factors such as wind, rain, snow, salt mist, ultraviolet radiation and the like.

However, the nacelle cover applied to the wind generating set in the prior art is mainly manufactured by adopting a solid plate body, and although the structure can meet the protection requirement, the structure has the defects of large weight, high production cost and the like.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a cabin cover and a wind generating set.

In one aspect, a nacelle cover is provided according to an embodiment of the present invention, including: the shell comprises a shell body and an accommodating cavity arranged in the shell body; the housing body is provided with inner wall parts, outer wall parts and a plurality of supporting parts, the inner wall parts are arranged in a spaced mode and are arranged oppositely, the supporting parts are connected between the inner wall parts and the outer wall parts, the inner wall parts face the accommodating cavities, and at least one of the inner wall parts and the outer wall parts and every two adjacent supporting parts jointly enclose to form a weight reducing cavity.

According to an aspect of the embodiments of the present invention, the housing body includes a plurality of housing units, each of the housing units includes an inner wall unit, an outer wall unit, and a support portion connected between the inner wall unit and the outer wall unit, the inner wall units together form an inner wall portion, the outer wall units together form an outer wall portion, and two adjacent housing units are connected to each other.

According to one aspect of the embodiment of the present invention, two adjacent housing units are at least partially inserted into one another and are fixedly or detachably connected to one another.

According to an aspect of the embodiment of the present invention, in two adjacent housing units, the inner wall unit of one and the inner wall unit of the other are at least partially stacked and connected to each other; and/or the outer wall unit of one and the outer wall unit of the other of the two adjacent housing units are at least partially stacked and connected with each other.

According to an aspect of the embodiment of the present invention, in two adjacent housing units, the inner wall unit and the outer wall unit of one of the two housing units are located between the inner wall unit and the outer wall unit of the other housing unit; or, in two adjacent housing units, the inner wall unit of one is located between the inner wall unit and the outer wall unit of the other, and the outer wall unit of one is located on the side of the outer wall unit of the other, which faces away from the accommodating cavity.

According to one aspect of the embodiment of the utility model, a first concave part is arranged on the inner wall unit of one of the two adjacent housing units, and the inner wall unit of the other housing unit is at least partially positioned in the first concave part; and/or a second recess is arranged on the outer wall unit of one of the two adjacent housing units, and the outer wall unit of the other housing unit is at least partially positioned in the second recess.

According to one aspect of the embodiment of the utility model, in two adjacent housing units, a first clamping protrusion is arranged on the inner wall unit of one housing unit, a first clamping groove is arranged on the inner wall unit of the other housing unit, and the first clamping protrusion is matched with the first clamping groove in shape and connected in a clamping manner; and/or in two adjacent housing units, a second clamping protrusion is arranged on the outer wall unit of one housing unit, a second clamping groove is arranged on the outer wall unit of the other housing unit, and the second clamping protrusion is matched with the second clamping groove in shape and connected in a clamping manner.

According to one aspect of the embodiment of the present invention, the housing unit is an aluminum profile plate body.

According to one aspect of the embodiment of the utility model, the inner wall part, the outer wall part and the supporting part are plate bodies, and the value ranges of the included angle between the supporting part and the inner wall part and the included angle between the supporting part and the outer wall part are respectively 30-150 degrees; and/or the housing body is also provided with a longitudinal reinforcing part, the longitudinal reinforcing part is positioned between the inner wall part and the outer wall part, and the longitudinal reinforcing part and the supporting part are intersected and connected with each other.

In another aspect, according to an embodiment of the utility model, a wind turbine generator set is provided, which includes the nacelle cover.

The cabin cover comprises a cover body and an accommodating cavity formed by enclosing the cover body, the accommodating cavity can accommodate other cabin equipment of the wind generating set, and the cover body protects the cabin equipment to meet the protection function requirement. The encloser body comprises an inner wall part, an outer wall part and a plurality of supporting parts, and the cabin cover is integrally more stable due to the design of the double-layer wall parts of the inner wall part and the outer wall part and the mutual supporting and connecting structural form of the supporting parts so as to adapt to the larger environment of wind power. And the weight reduction cavity formed between the supporting part and the outer wall part and/or the inner wall part can effectively reduce the material usage amount of the whole cabin cover, not only can reduce the weight of the cabin cover, but also can effectively reduce the production cost and improve the production benefit of the wind generating set.

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 view of a wind turbine generator system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a nacelle cover of an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a nacelle cover of one embodiment of the utility model;

FIG. 4 is a partial schematic structural view of a housing body according to one embodiment of the utility model;

FIG. 5 is a partial schematic structural view of a housing body according to another embodiment of the utility model;

FIG. 6 is an enlarged schematic view at A in FIG. 3;

FIG. 7 is an enlarged schematic view at B in FIG. 3;

FIG. 8 is a partial schematic structural view of a housing body according to yet another embodiment of the utility model;

FIG. 9 is a partial structural schematic view of a housing body according to yet another embodiment of the utility model;

fig. 10 is a partial structural view of a housing body according to still another embodiment of the present invention.

Wherein:

10-a nacelle cover; 101-a housing body; 102-a containment chamber; 103-inner wall portion; 104-an outer wall portion; 105-a support; 106-weight loss lumen; 107-housing unit; 107 a-a first housing unit; 107 b-a second housing unit; 108-a first recess; 109-a second recess; 110-an inner wall element; 111-an outer wall element; 112-a first clamping projection; 113-a first snap groove; 114-a second snap projection; 115-a second snap groove; 116-a first solder material; 117-second solder material; 118-a third solder material; 119-a fourth solder material; 120-longitudinal reinforcement;

20-a tower;

30-an impeller;

the angle alpha-is included.

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 present invention by illustrating examples of the present 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 following description is given with the directional terms shown in the drawings and is not intended to limit the specific structure of the nacelle cover and the wind turbine generator system 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 appropriate to those of ordinary skill in the art.

As shown in fig. 1, an embodiment of the present invention provides a wind turbine generator set, which includes a nacelle cover 10, a tower 20, an impeller 30, and other nacelle devices (not shown), such as a converter and a transformer. The nacelle cover 10 is attached to a tower 20 and disposed at the top end of the tower 20, and a generator and other nacelle equipment are disposed in a housing cavity of the nacelle cover 10. In some examples, the generator may be located outside the nacelle cover 10. The impeller 30 comprises a hub and a plurality of blades connected to the hub, the blades being connected to the rotor of the generator via their hub. When wind power acts on the blades, the whole impeller 30 and the rotor of the generator are driven to rotate, and the power generation requirement of the wind generating set is further met.

The nacelle cover 10 needs to maintain a strong stability under the action of the ambient wind and the rotation of the impeller 30. In order to achieve the above purpose, the nacelle covers in the prior art are usually made of solid plates, and although such a structure can meet the protection requirement, the structural materials are used in a large amount, so that the nacelle cover 10 has a large overall weight and a high cost.

Based on the above technical problems, the embodiment of the utility model provides a nacelle cover 10, which can meet the requirement of an overall protection function, and has the advantages of light weight, low production cost and short production period. For a better understanding of the utility model, a nacelle cover 10 according to an embodiment of the utility model is described in detail below with reference to fig. 2 to 10.

As shown in fig. 2 and 3, a nacelle cover 10 according to an embodiment of the present invention includes: the housing comprises a housing body 101 and an accommodating cavity 102 arranged inside the housing body 101. The housing body 101 has an inner wall 103, an outer wall 104 and a plurality of supports 105 connected between the inner wall 103 and the outer wall 104, wherein the inner wall 103 faces the accommodating cavity 102, and at least one of the inner wall 103 and the outer wall 104 and every two adjacent supports 105 together enclose a weight-reducing cavity 106.

In the nacelle cover 10 provided by the embodiment of the utility model, the accommodating cavity 102 is used for accommodating other equipment such as a generator of a wind generating set and the like, and the equipment is protected by the cover body 101, so that the strength and stability of the structure of the cover body 101 need to meet the requirements of a protection function. The casing body 101 includes an inner wall portion 103, an outer wall portion 104, and a plurality of support portions 105. The double-walled design of the inner wall part 103 and the outer wall part 104 and the mutual supporting connection by means of the plurality of support parts 105 make the nacelle cover overall more stable to adapt to the environment of high wind forces. In addition, the weight reduction cavity 106 formed between the support part 105 and the outer wall part 104 and/or the inner wall part 103 can effectively reduce the material usage amount of the whole nacelle cover 10, reduce the weight of the nacelle cover 10, effectively reduce the production cost and improve the production benefit of the wind turbine generator system.

Alternatively, in the plurality of supporting portions 105 between the inner wall portion 103 and the outer wall portion 104, every two adjacent supporting portions 105 may be disposed at an interval from each other, and may of course intersect with each other.

Alternatively, each two adjacent support portions 105 may together enclose a weight-reduction cavity 106 with one of the inner wall portion 103 and the outer wall portion 104. Of course, each two adjacent supporting portions 105 may form a weight-reducing cavity 106 together with the inner wall portion 103 and the outer wall portion 104.

Alternatively, the nacelle cover 10 may be integrally formed as a single structure, but may be assembled from a plurality of separate structures in some embodiments.

As an alternative embodiment, as shown in fig. 2 to 4, the housing body 101 may include a plurality of housing units 107, each housing unit 107 includes inner wall units 110, outer wall units 111 and a support portion 105 connected between the inner wall units 110 and the outer wall units 111, the inner wall units 110 together form an inner wall portion 103, the outer wall units 111 together form an outer wall portion 104, and two adjacent housing units 107 are connected to each other.

Through the structure, the whole housing body 101 is divided into the plurality of housing units 107, so that the plurality of housing units 107 can be manufactured in a split manner, and the molding of the housing body 101 is facilitated.

In an alternative embodiment, two adjacent housing units 107 extend at least partially into the interior of one another and are fixedly connected to one another. The shell units 107 are connected with each other in a fixed connection mode, so that the connection strength between the shell units and the shell units can be ensured, and the overall stability of the cabin cover is improved.

Alternatively, when the two adjacent housing units 107 are fixedly connected, they may be fixedly connected to each other by welding, bonding, or interference fit, for example.

Of course, the fixed connection between two adjacent housing units 107 is only an alternative embodiment, and in some embodiments, it is also possible to make one of the two adjacent housing units 107 at least partially extend into the other and be detachably connected to each other. The detachable connection mode is adopted, so that the housing body 101 is convenient to mount, dismount and transport. And can be convenient for maintain housing unit 107, when there is damaged housing unit 107, only need to change damaged housing unit 107, need not to scrap cabin cover 10 is whole, improve cabin cover 10 maintenance and maintenance's convenience to prolong cabin cover 10 is whole life.

Alternatively, when the two adjacent housing units 107 are detachably connected, they may be detachably connected to each other by, for example, bolt, screw, or rivet fastening.

In addition, in the above structure, any one of the two adjacent housing units 107 partially extends into the other housing unit, so that the contact area of the joint of the two housing units 107 is increased, the two housing units 107 can be stably connected, and the safety and stability of the structure of the housing body 101 are improved.

In an alternative embodiment, the inner wall unit 110 of one of the two adjacent housing units 107 and the inner wall unit 110 of the other of the two housing units are at least partially stacked on each other and connected to each other.

By at least partially stacking and connecting the inner wall units 110 of two adjacent inner wall units 110, the structural integrity and continuity of the inner wall parts 103 of the housing body 101 can be maintained, the connection between the inner wall parts 103 of two adjacent housing units 107 is facilitated, meanwhile, a gap can be avoided between the inner wall parts 103, the structural stability of the housing body 101 is ensured, and the protection grade of the cabin cover 10 is improved.

In an alternative embodiment, the outer wall unit 111 of one of the two adjacent housing units 107 and the outer wall unit 111 of the other of the two housing units are at least partially stacked on each other and connected to each other.

By at least partially stacking and connecting the outer wall units 111 of two adjacent housing units 107, the structural integrity and continuity of the outer wall part 104 of the housing body 101 can be maintained, the connection between the outer wall parts 104 of two adjacent housing units 107 is facilitated, a gap can be prevented from being generated between the outer wall parts 104, the structural stability of the housing body 101 is ensured, and the protection grade of the cabin cover 10 is improved.

Referring to fig. 4, in two adjacent housing units 107, the inner wall unit 110 of one is located between the inner wall unit 110 and the outer wall unit 111 of the other, and the outer wall unit 111 of one is located on a side of the outer wall unit 111 of the other, which faces away from the accommodating cavity 102.

In order to describe the positional relationship more clearly, the following embodiments will exemplify one of the two adjacent housing units 107 as the first housing unit 107a, and the other as the second housing unit 107 b.

The connection between the housing units 107 may be in various forms, such as welding, and adhesion. The first welding material 116 is provided on the outer wall element 111 of the first housing element 107a, the outer wall element 111 of the first housing element 107a extends into the outer wall element 111 of the second housing element 107b to expose the first welding material 116, and the outer wall element 111 of the second housing element 107b is connected to the outer wall element 111 of the first housing element 107a by the first welding material 116. The second welding material 117 is provided on the outer wall unit 111 of the second housing unit 107b, the outer wall unit 111 of the second housing unit 107b extends into the outer wall unit 111 of the first housing unit 107a to expose the second welding material 117, and the outer wall unit 111 of the first housing unit 107a is connected to the outer wall unit 111 of the first housing unit 107a by the second welding material 117.

By arranging the outer wall unit 111 of the first housing unit 107a between the inner wall unit 110 and the outer wall unit 111 of the second housing unit 107b, and arranging the inner wall unit 110 of the first housing unit 107a on one side of the inner wall unit 110 of the second housing unit 107b facing the accommodating cavity 102, the contact area between the first housing unit 107a and the second housing unit 107b can be increased, the connection stability between the adjacent housing units 107 is improved, the thicknesses of the two housing units 107 are kept equal, and the structure uniformity of the whole housing body 101 is kept. In addition, the first welding material 116 and the second welding material 117 are provided, so that the connection stability between the adjacent housing units 107 is further improved, and the structural strength of the housing body 101 is ensured.

It will be appreciated that the above-described form of stacked connection in adjacent housing units 107 is only an alternative embodiment.

Referring to fig. 5, in some embodiments, it is also possible to make two adjacent housing units 107, wherein the inner wall unit 110 and the outer wall unit 111 of one of the two housing units are located between the inner wall unit 110 and the outer wall unit 111 of the other housing unit. The requirement for connection between two adjacent housing units 107 can also be satisfied.

In an alternative embodiment, a first recess 108 is provided on the inner wall unit 110 of one of the two adjacent housing units 107, and the inner wall unit 110 of the other one is at least partially located in the first recess 108. The outer wall unit 111 of one of the two adjacent housing units 107 is provided with a second recess 109, and the outer wall unit 111 of the other is at least partially located in the second recess 109.

Illustratively, with continued reference to fig. 5, a first recess 108 may be provided on the inner wall element 110 of the first housing element 107a, with the inner wall element 110 of the second housing element 107b partially located within the first recess 108. The outer wall element 111 of the first housing element 107a is provided with a second recess 109, and the outer wall element 111 of the second housing element 107b is partially located in the second recess 109.

By providing the first recess 108 and/or the second recess 109, while stably connecting two adjacent housing units 107, an accommodation space is provided for the joint of the housing units 107, preventing the joint between the adjacent housing units 107 from surface bulging due to the lamination of the inner wall portion 103 or the outer wall portion 104. Thereby preventing the case units 107 from being broken due to damage of the protruding portions thereof in case of a long-term strong wind, and the case units 107 are disconnected from each other. The above-described structure can effectively maintain the long-term structural stability of the housing unit 107 and the safety during use.

Further, a third welding material 118 is provided in the first recess 108, a fourth welding material 119 is provided in the second recess 109, the inner wall element 110 of the second case element 107b is connected to the inner wall element 110 of the second case element 107b by the third welding material 118, and the outer wall element 111 of the second case element 107b is connected to the outer case element of the first case element 107a by the fourth welding material 119. By arranging the third welding material 118 and the fourth welding material 119, the connection stability between the adjacent housing units 107 is further improved, and the structural strength of the housing body 101 is ensured.

Referring to fig. 6 and 7, in some alternative embodiments, in two adjacent housing units 107, a first clamping protrusion 112 is disposed on the inner wall unit 110 of the first housing unit 107a, a first clamping groove 113 is disposed on the inner wall unit 110 of the second housing unit 107b, and the first clamping protrusion 112 matches with the first clamping groove 113 in shape and is clamped and connected. In two adjacent housing units 107, a second clamping protrusion 114 is arranged on the outer wall unit 111 of the first housing unit 107a, a second clamping groove 115 is arranged on the outer wall unit 111 of the second housing unit 107b, and the second clamping protrusion 114 is matched with the second clamping groove 115 in shape and clamped and connected. Optionally, the structures of the first clamping protrusion 112 and the second clamping protrusion 114 may be disposed on one housing unit 107 at the same time, or alternatively disposed in the inner wall unit 110 or the outer wall unit 111 of the housing unit 107, and the structures may be designed according to the needs, which is not limited herein.

The structure is provided with the first clamping protrusion 112 and the first clamping groove 113 matched with the first clamping protrusion, and the friction force between the two adjacent clamping protrusions is improved, so that the connection between the two adjacent clamping protrusions is more stable, and the structural stability and the safety performance of the whole housing body 101 are improved.

As an alternative embodiment, the housing unit 107 is an aluminum profile plate. Aluminium alloy low cost, and easy processing, and aluminium alloy light in weight itself selects aluminium alloy preparation housing body 101 can effectual shortening production time, promotes production efficiency to further alleviate housing body 101's dead weight.

Referring to fig. 8 and 9, as an alternative embodiment, the inner wall portion 103, the outer wall portion 104, and the supporting portion 105 are all plate bodies, and the included angle between the supporting portion 105 and the inner wall portion 103 and the included angle between the supporting portion 105 and the outer wall portion 104 respectively have any value between 30 ° and 150 °, including both end values of 30 ° and 150 °. In some examples, the angle between the support portion 105 and the inner wall portion 103 and the angle between the support portion 105 and the outer wall portion 104 may also take 45 °, 60 °, 90 ° and 120 °.

By providing the inner wall 103, the outer wall 104, and the support 105 as plate bodies, the stress on the housing body 101 can be uniformly distributed, and the structural balance can be maintained. The included angle between the support part 105 and the inner wall part 103 or the outer wall part 104 is set to 30-150 degrees, so that the connection between the support part 105 and the inner wall part 103 and the outer wall part 104 can be firmer, and the stability of the structure and the shape of the weight-reducing cavity 106 is ensured.

As shown in fig. 10, in some embodiments, the casing body 101 further has a longitudinal reinforcement portion 120, the longitudinal reinforcement portion 120 is located between the inner wall portion 103 and the outer wall portion 104, and the longitudinal reinforcement portion 120 intersects with the support portion 105 and is connected to each other. The longitudinal reinforcement portion 120 is connected to the inner wall portion 103 and the outer wall portion 104 through the support portion 105, and further improves structural stability and structural strength of the interior of the housing body 101.

The embodiment of the utility model also provides a wind generating set, which comprises the engine room cover 10. The wind generating set provided by the embodiment of the utility model has the advantages of low cost, stable structure, short production period and the like because the wind generating set comprises the engine room cover 10 provided by each embodiment, and is easy to popularize and use.

While the utility model 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 utility model. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A nacelle cover, characterized by comprising a cover body (101) and an accommodation cavity (102) provided inside the cover body (101);

the cover body (101) is provided with an inner wall portion (103), an outer wall portion (104) and a plurality of supporting portions (105) connected between the inner wall portion (103) and the outer wall portion (104), the inner wall portion (103) is arranged facing the accommodating cavity (102), and at least one of the inner wall portion (103) and the outer wall portion (104) and every two adjacent supporting portions (105) jointly enclose a weight reducing cavity (106).

2. The nacelle cover according to claim 1, wherein the shell body (101) includes a plurality of shell units (107), each shell unit (107) includes an inner wall unit (110), an outer wall unit (111), and the support portion (105) connected between the inner wall unit (110) and the outer wall unit (111), the inner wall units (110) together form the inner wall portion (103), the outer wall units (111) together form the outer wall portion (104), and adjacent two shell units (107) are connected to each other.

3. Nacelle cover according to claim 2, wherein two adjacent housing units (107) extend at least partially into the interior of one another and are fixedly or detachably connected to one another.

4. Nacelle cover according to claim 2, wherein two adjacent casing units (107), the inner wall unit (110) of one and the inner wall unit (110) of the other being at least partially stacked on each other and connected to each other;

and/or, two adjacent housing units (107), wherein the outer wall unit (111) of one and the outer wall unit (111) of the other are at least partially stacked on each other and connected to each other.

5. Nacelle cover according to claim 2, wherein two adjacent casing units (107) are located with the inner wall unit (110) and the outer wall unit (111) of one between the inner wall unit (110) and the outer wall unit (111) of the other;

or, in two adjacent casing units (107), the inner wall unit (110) of one is positioned between the inner wall unit (110) and the outer wall unit (111) of the other, and the outer wall unit (111) of one is positioned on the side of the outer wall unit (111) of the other, which faces away from the accommodating cavity (102).

6. Nacelle cover according to claim 2, wherein two adjacent casing units (107) are provided with a first recess (108) in the inner wall unit (110) of one, the inner wall unit (110) of the other being at least partially located in the first recess (108);

and/or, in two adjacent housing units (107), a second recess (109) is arranged on the outer wall unit (111) of one, and the outer wall unit (111) of the other is at least partially positioned in the second recess (109).

7. The nacelle cover according to claim 2, wherein a first clamping protrusion (112) is arranged on the inner wall unit (110) of one of the two adjacent housing units (107), a first clamping groove (113) is arranged on the inner wall unit (110) of the other one of the two adjacent housing units, and the first clamping protrusion (112) is matched with the first clamping groove (113) in shape and is connected in a clamping manner;

and/or, adjacent two in housing unit (107), one of them be provided with protruding (114) of second joint on outer wall unit (111), the other be provided with second joint groove (115) on outer wall unit (111), protruding (114) of second joint with the shape phase-match and the joint of second joint groove (115) are connected.

8. Nacelle cover according to claim 2, wherein the cover unit (107) is an aluminium profile plate.

9. The nacelle cover according to any of claims 1 to 8, wherein the inner wall part (103), the outer wall part (104) and the support part (105) are plate bodies, and the angle between the support part (105) and the inner wall part (103) and the angle between the support part (105) and the outer wall part (104) have a value in the range of 30 ° to 150 °, respectively;

and/or the housing body (101) is further provided with a longitudinal reinforcing part (120), the longitudinal reinforcing part (120) is positioned between the inner wall part (103) and the outer wall part (104), and the longitudinal reinforcing part (120) and the supporting part (105) are intersected and connected with each other.

10. A wind power plant, characterized by comprising a nacelle cover (10) according to any of claims 1 to 9.

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