Cabin cover and wind turbine generator set

A cabin cover and a wind turbine generator set are provided. The cabin cover includes: a cover, the cover including first plates, second plates, and at least one support beam, the first plate and the second plate being alternately arranged, at least one group of adjacent first plate and second plate being spaced apart from each other and being fitted to the support beam, and the first plates, the second plates, and the support beams jointly enclosing an accommodating chamber; and fasteners, two or more of fasteners being provided and disposed in the accommodating chamber, at least one fastener detachably connecting the first plate to the support beam, and at least one fastener detachably connecting the second plate to the support beam.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a national phase of International Application No. PCT/CN2020/103813, filed on Jul. 23, 3030, and claims the benefits of priority to Chinese Patent Application No. 201911175245.7, filed on Nov. 26, 2019. The entire contents of each of the above-identified applications are expressly incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to a technical field of wind power, and specifically relates to a nacelle cover and a wind turbine generator.

BACKGROUND

The nacelle cover, as a protective shell of the wind turbine generator, can enclose multiple components of the wind turbine generator in it and protect them, and the reliability of the nacelle cover determines the stability requirements and service life of the wind turbine generator.

Due to unreasonable structural designs, the nacelle covers in the prior art have a lower strength after being formed by assembling various sheets, and meanwhile, the operator needs to climb to the outside of the nacelle cover and disassemble and assemble fasteners for connecting the various sheets when maintaining the nacelle cover, thereby bringing hidden dangers to the personal safety of the operators.

SUMMARY

Embodiments of the present disclosure provide a nacelle cover and a wind power generator, the nacelle cover can satisfy requirements on protection of multiple components of the wind power generator, and meanwhile, the nacelle cover has high strength and can ensure the personal safety of operators during maintenance.

On one aspect, the embodiments of the present application provide a nacelle cover, including: a cover casing, including a first plate, a second plate and at least one support beam, the first plate and the second plate being alternately arranged, adjacent first plate and second plate in at least one group being spaced apart from each other and holding the support beam between them, and the first plate, the second plate and the support beams being connected and jointly forming an accommodating chamber; and fasteners, wherein there are two or more fasteners disposed in the accommodating chamber, at least one fastener detachably connects the first plate to the support beam, and at least one fastener detachably connect the second plate to the support beam.

According to the implementation of one aspect of the present application, adjacent first plate and second plate in each group are spaced apart from each other and hold the support beam between them, and each support beam is at least partially located outside the accommodating chamber.

According to the implementation of one aspect of the present application, the support beam is formed as a prismatic member and includes a first surface and a second surface which are arranged to intersect each other, among the first plate and the second plate disposed adjacently and holding the support beam between them, the first plate is attached to the first surface and is connected to the support beam through at least one fastener, and the second plate is attached to the second surface and is connected to the support beam through at least one fastener.

According to the implementation of one aspect of the present application, the support beam includes a cavity penetrating through the support beam along its own extending direction, a positioning portion is disposed in the cavity, and the fastener is detachably connected to the support beam through the positioning portion.

According to the implementation of one aspect of the present application, each of an inner side of the first surface and an inner side of the second surface is provided with the positioning portion, the positioning portion includes an insertion body and a fixing body with an installation groove, the insertion body is inserted into the installation groove and is detachably connected to the fixing body, and the positioning portion is connected to the support beam through the fixing body and is detachably connected to the fastener through the insertion body.

According to the implementation of one aspect of the present application, the fixing body and the support beam are integrally formed, the installation groove penetrates through at least one end of the fixing body along the extending direction, the support beam includes an opening communicating with each installation groove, and the fastener extends into the installation groove through the opening opposite to the fastener and is threadedly connected to the insertion body.

According to the implementation of one aspect of the present application, a first through groove and a second through groove in communication with the first through groove are provided inside the fixing body, and with respect to the extending direction, a cross section enclosing the first through groove is larger than a cross section enclosing the second through groove, wherein the first through groove and the second through groove jointly form the installation groove, the insertion body is located in the first through groove, and the fastener penetrates through the insertion body and extends to the second through groove.

According to the implementation of one aspect of the present application, the support beam includes a first mounting plate, a second mounting plate and an inclined plate, the first mounting plate and the second mounting plate are arranged to intersect with each other, the first surface is located on the first mounting plate, the second surface is located on the second mounting plate, the inclined plate is arranged to intersect with the first mounting plate and the second mounting plate respectively, and the first mounting plate, the second mounting plate and the inclined plate enclose and form the cavity.

According to the implementation of one aspect of the present application, at least one first plate includes two or more first plate units, and the two or more first plate units are arranged successively along an extending direction of the support beam, and the first plate units each have a first bending portion and a first extending portion extending into the accommodating chamber; the first extending portions of two adjacent first plate units abut against each other and are detachably connected to each other, the first bending portion of each of the first plate units is pressed against the support beam, and the first bending portion of at least one of the first plate units is connected to the support beam through the fastener.

According to the implementation of one aspect of the present application, at least one second plate includes two or more second plate units, the two or more second plate units are arranged successively along an extending direction of the support beam, and the second plate units each have a second bending portion and a second extending portion extending into the accommodating chamber; the second extending portions of two adjacent second plate units abut against each other and are detachably connected to each other, the second bending portion of each of the second plate unis is pressed against the support beam, and the second bending portion of at least one of the second plate units is connected to the support beam through the fastener.

According to the implementation of one aspect of the present application, the nacelle cover further includes a support platform and a first adapter seat disposed in the accommodating chamber, the support platform is detachably connected to a surface of at least one first plate and/or at least one second plate facing the accommodating chamber through the first adapter seat.

According to the implementation of one aspect of the present application, the first adapter seat includes a first connecting portion and a second connecting portion which are arranged to intersect with each other, the first adapter seat is detachably connected to the first plate and/or the second plate through the first connecting portion, and the first adapter seat is detachably connected to the support platform through the second connecting portion.

According to the implementation of one aspect of the present application, the first connecting portion and the second connecting portion are both formed as plate-like members and are arranged perpendicular to each other.

According to the implementation of one aspect of the present application, the nacelle cover further includes a truss and a second adapter seat, one end of the truss is connected to the support beam through the second adapter seat, and the other end of the truss is connected to the support platform.

According to the implementation of one aspect of the present application, the second adapter seat includes a transition section, a first installation section and a second installation section, the first installation section and the second installation section are respectively connected to the transition section and extend opposite to each other, and the second adapter seat is connected to the support beam through the first installation section and is connected to the truss through the second installation section.

According to the implementation of one aspect of the present application, the transition section, the first installation section and the second installation section are formed into an integral member.

According to the implementation of one aspect of the present application, the transition section, the first installation section and the second installation section are formed as plate-like members, and the first installation section and the second installation section are respectively perpendicular to the transition section.

According to the implementation of one aspect of the present application, the cover casing further includes a first end plate and a second end plate, the first end plate is located at one end of the support beam along an extending direction of the support beam and is connected to the support beam, and the second end plate is located at the other end of the support beam along the extending direction of the support beam and is connected to the support beam.

According to the implementation of one aspect of the present application, the cover casing further includes a protrusion; a surface of at least one first plate close to and/or away from the accommodating chamber is provided with the protrusion; and/or, a surface of at least one second plate close to the accommodating chamber is provided with the protrusion.

On another aspect, the embodiments of the present application provide a wind turbine generator, including the above-mentioned nacelle cover.

In the drawings, the same components are given the same reference numerals. The accompanying drawings are not drawn to actual scale.

DETAILED DESCRIPTION

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

The orientation words appearing in the following description all refer to directions shown in the accompanying drawings, and are not intended to limit the specific structures of the nacelle cover and the wind turbine generator of the present application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms “installation” and “connection” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection, and may be a direct connection or an indirect connection. For the person skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

For a better understanding of the present application, the nacelle cover and the wind power generator according to the embodiments of the present application will be described in detail below with reference toFIGS.1to10.

Referring toFIG.1, an embodiment of the present application provides a wind turbine generator, and the wind turbine generator mainly includes a wind turbine foundation500, a tower200, a nacelle, a generator300and an impeller400. The tower200is connected to the wind turbine foundation500, and the nacelle is disposed on a top of the tower200. The nacelle includes a nacelle cover100, and components such as converters and transformers are disposed inside the nacelle cover100. The generator300is disposed at the nacelle. The impeller400includes a hub401and a plurality of blades402connected to the hub401, and the impeller400is connected to a rotating shaft of the generator300through the hub401. When the wind acts on the blades402, the entire impeller400and the rotating shaft of the generator300are driven to rotate, so as to convert the wind energy into electrical energy.

In order to better satisfy the requirements of protecting the components such as the transformers, converters, located inside the nacelle and ensure the power generation requirements of the wind turbine generator, the embodiments of the present application provide a new type of nacelle cover100, which can be independently produced or sold as an independent component, and certainly, can also be used in the above-mentioned wind turbine generator and serve as a component of the wind turbine generator.

Referring toFIG.2toFIG.7in combination, the nacelle cover100provided by the embodiment of the present application includes a cover casing10and a fastener20, and the nacelle cover100includes first plates11, second plates12and at least one support beam13, wherein the first plates11and the second plates12are alternately arranged, and adjacent first plate11and second plate12in at least one group are spaced apart from each other and hold the support beam13between them. The first plates11, the second plates12and the support beams13are connected and jointly form an accommodating chamber10a. There are two or more fasteners20, which are disposed in the accommodating chamber10a, at least one fastener20extends from the first plate11into the support beam13and detachably connects the first plate11to the support beam13, and at least one fastener20extends from the second plate12into the support beam13and detachably connects the second plate12to the support beam13.

The nacelle cover100provided by the embodiments of the present application can satisfy the requirements of protecting multiple components of the wind turbine generator and have a high strength, and meanwhile, since the fasteners20extend from the corresponding first plate11and second plate12into the support beam13, the disassembly and assembly of the plates with the support beam13can be implemented inside the nacelle cover100, and thus the disassembly, assembly and maintenance are facilitated with higher safety performance.

As an optional implementation, the number of the first plates11and the second plates12can be set according to the shape requirements of the nacelle cover100. In some optional examples, each of the number of the first plates11and the second plates12can be two, and further may be more than two, for example, three, four or even more.

In some optional embodiments, both of the first plates11and the second plates12may be formed as flat plates, so that a cross section of the nacelle cover100as a whole is in a polygonal shape. Certainly, in some other examples, both of the first plates11and the second plates12further may be formed as curved plates, so that a cross section of the nacelle cover100as a whole is substantially in a circular shape.

As an optional embodiment, the adjacent first plate11and second plate12in each group are spaced apart from each other and hold the support beam13between them, and each support beam13is at least partially located outside the accommodating chamber10a. With the above configuration, not only the strength of the nacelle cover100as a whole can be improved, but also each of the first plate11and the second plate12can be held between two adjacent support beams13, thereby facilitating the disassembly and assembly of the first plate11and the second plate12with the corresponding support beams13through the fasteners20and further ensuring the operation safety of the operators. Further, by limiting the support beam13to be at least partially located outside the accommodating chamber10a, contact areas of the support beam13with the corresponding first plate11and the second plate12can be increased, thereby better ensuring the connection strength of the support beam13with the first plate11and the second plate12.

In some optional examples, the support beam13is formed as a prismatic member and includes a first surface131and a second surface132which are arranged to intersect with each other, and among the first plate11and the second plate12that are disposed adjacently and hold the support beam13, the first plate11is attached to the first surface131and is connected to the support beam13by at least one fastener20, and the second plate12is attached to the second surface132and is connected to the support beam13by at least one fastener20. By limiting the support beam13to include the first surface131and the second surface132which are arranged to intersect with each other, the attachment of the support beam13to the corresponding first plate11and the second plate12can be facilitated, thereby further increasing the contact areas of the support beam13with the first plate11and the second plate12, and better satisfying the requirements that the fasteners20extend into the support beam13from the inside of the accommodating chamber10aof the nacelle cover100and connect the first plate11and the second plate12to the support beam13respectively.

Further, by limiting the first surface131and the second surface132to intersect with each other, the adjacent first plate11and the second plate12can made to intersect with each other, thereby facilitating the formation of the accommodating chamber10aof the nacelle cover100.

In some optional embodiments, the first surface131and the second surface132are perpendicular to each other, which can better satisfy the requirements of respectively connecting the first plate11and the second plate12to the support beam13through the fasteners20.

Optionally, the fasteners20may be bolts, screws or other components capable of detachably connecting the first plate11and the second plate12to the support beam13respectively.

In some optional embodiments, the first plate11is provided with a first bending edge that is bent toward the inside of the accommodating chamber10a, on a side facing the corresponding support beam13, and the first plate11can abut against the first surface131through the first bending edge and is detachably connected to the support beam13through the fasteners20. Similarly, the second plate12is provided with a second bending edge that is bent toward the inside of the accommodating chamber10a, on a side facing the corresponding support beam13, and the second plate12can abut against the second surface132through the second bending edge and is detachably connected to the support beam13by the fasteners20. With the above configuration, the operators can disassemble and assemble the first plate11and the second plate12inside the accommodating chamber10a, and thus the maintenance is more convenient.

Continuing to refer toFIG.2toFIG.7, as an optional embodiment, the support beam13includes a cavity133which penetrates through the support beam13along an extending direction X of the support beam13, a positioning portion14is provided in the cavity13, and the fastener20is detachably connected to the support beam13through the positioning portion14. By defining the support beam13to include the cavity133which penetrates through the support beam13along the extending direction X of the support beam13, the effects of weight and cost reduction of the support beam can be achieved. Meanwhile, the ends of the fasteners20that extend outward from the inside of the accommodating chamber10aand connect the first plate11or the second plate12to the support beam13, can be protected by the support beam13, and thus can be avoided from being eroded and corroded by rainwater or the like, thereby improving the service life of the fastener20. Therefore, the maintenance cost of the nacelle cover100is reduced, the safe and stable operation of the wind turbine generator applied with the nacelle cover100is ensured, and the power generation benefit is ensured. Moreover, by disposing the positioning portion14inside the cavity133, the connection between the fasteners20and the support beam13can be more facilitated, and the thickness of the side wall of the support beam13for connecting and forming the cavity133can be reduced, thereby better satisfying the requirements of weight and cost reduction.

In some optional embodiments, an inner side of the first surface131and an inner side of the second surface132are each provided with the positioning portion14, so as to ensure that the fasteners20for connecting the support beam13to the first plate11and the second plate12all can be effectively connected and fixed.

Continuing to refer toFIG.5toFIG.7, optionally, the positioning portion14may include a fixing body141and an insertion body142, the fixing body141includes an installation groove141a, the insertion body142is inserted into the installation groove141aand is detachably connected to the fixing body141, and the positioning portion14is connected to the support beam13through the fixing body141and is detachably connected to the fastener20through the insertion body142. By adopting the above-mentioned configuration, the positioning portion14can not only satisfy the requirements of the detachable connection between the fastener20and the support beam13, but also, due to the detachable connection between the insertion body142and the installation groove141a, can allow replacement of the insertion body142, thereby avoiding the failure of the entire support beam13due to the damage of the insertion body142.

As an optional implementation, the fixing body141and the support beam13are integrally formed, which facilitates the forming of the fixing body141and also can ensure the connection strength between the fixing body141and the support beam13. Optionally, the installation groove141apenetrates at least one end of the fixing body141along the extending direction X of the support beam13, and optionally penetrates through the at least one end of the fixing body141in the extending direction X.

As an optional implementation, the fixing body141includes a first through groove141band a second through groove141cin communication with the first through groove141bin it, and with respect to a length direction or the extending direction X of the support beam13, a cross section enclosing the first through groove141bis larger than a cross section enclosing the second through groove141c. That is, a cross-section of a wall of the fixing body141for enclosing and forming the installation groove141awith respect to the length direction of the support beam13is in a shape of a Chinese character “” as a whole.

The insertion body142may be located in the first through groove141b, and the fastener20for connecting the first plate11to the support beam13or for connecting the second plate12to the support beam13penetrates through the insertion body142and extends to the second through groove141c. By adopting the above-mentioned configuration, the fixing body141can not only satisfy the installation requirements of the insertion body142and ensure the fixing requirements of the fastener20, but also can be applicable to the fixing of the first plate11and second plate12of different thicknesses by adjusting the screw-in depth of the fastener20.

In some optional examples, the support beam13includes an opening134in communication with each installation groove141a, and the fastener20extends into the installation groove141through the opening134opposite to the fastener20and is threadedly connected to the insertion body142. By the above configuration, it not only can facilitate the fastener20to protrude outward and into the support beam13from the accommodating chamber10a, but also can facilitate the fastener20to slide along the extending direction X of the support beam13, so that the first plate11and/or the second plate12can be disassembled and assembled by pulling the insertion body142, thereby providing various forms for the disassembly and assembly of the first plate11and the second plate12.

In some optional examples, the support beam13includes a first mounting plate13aand a second mounting plate13bwhich are arranged to intersect with each other, the first surface131is located on the first mounting plate13a, and the second surface132is located on the second mounting plate13b. Optionally, the support beam13further includes an inclined plate13clocated between the first mounting plate13aand the second mounting plate13b, a main body of the inclined plate13cis arranged to intersect with the first mounting plate13aand the second mounting plate13b, an end of the main body facing the first mounting plate13ais inclined toward the first mounting plate13aand is arranged perpendicular to the first mounting plate13a, and an end of the main body of the inclined plate13cfacing the second mounting plate13bis inclined toward the second mounting plate13band is arranged perpendicular to the second mounting plate13b. The first mounting plate13a, the second mounting plate13band the inclined plate13care connected to form a trapezoid as a whole, and the formed cavity133is a trapezoidal cavity. By adopting the above structural form, which is an optional optimized form, the support beam, on the basis of satisfying the overall strength enhancement of the nacelle cover and the connection requirements between the first plate11and the second plate12, can further improve the stability of the nacelle cover100, improve the force applied on the first plate11and the second plate12, lower requirements on material properties, and further reduce costs.

Referring toFIG.4toFIG.8in combination, as an optional implementation, in the nacelle cover100provided by the above embodiments, at least one first plate11includes two or more first plate units111, and the two or more first plate units111are arranged successively along the extending direction X of the support beam13; each first plate unit111includes a first bending portion111aand a first extending portion111bextending into the accommodating chamber10a, the first extending portions111bof two adjacent first plate units111abut against each other and are detachably connected to each other, the first bending portion111aof each first plate unit111is pressed against the support beam13, and the first bending portion111aof at least one first plate unit111is connected to the support beam13by the fastener20. The first bending portions111aof all the first plate units111jointly constitute the above-mentioned first bending edge.

By adopting the above-mentioned structural form, the first plate11can not only satisfy the protection requirements for the internal components of the nacelle cover100, but also can facilitate mass-production and transportation of the first plate units111, which can significantly reduce difficulty and cost of production and transportation. Each first plate unit111can be applied to one or more types of wind turbine generators, and it is only necessary to exchange the support beam13to different specifications, the first plate units111can be assembled into the nacelle cover100of various specifications to satisfy the requirements of multiple types of generators, which make the nacelle cover100to have greater flexibility and universality.

Referring toFIG.4toFIG.9in combination, as an optional implementation, in the nacelle cover100provided by the above embodiments, at least one second plate12includes two or more second plate units121, and the two or more second plate units121are arranged successively along the extending direction X of the support beam13; each second plate unit121includes a second bending portion121aand a second extending portion121bextending into the accommodating chamber10a. The second extending portions121bof two adjacent second plate units121abut against each other and are detachably connected to each other, the second bending portion121aof each second plate unit121is pressed against the support beam13, and the second bending portion121aof at least one second plate unit121is connected to the support beam13by the fastener20. The second bending portions121aof all the second plate units121jointly constitute the above-mentioned second bending edge.

Similarly, by adopting the above-mentioned structural form, the second plate12can not only satisfy the protection requirements for the internal components of the nacelle cover100, but also can facilitate mass-production and transportation of the second plate units121, which can significantly reduce difficulty and cost of production and transportation. Each second plate unit121can be applicable to one or more types of wind turbine generators, and it is only necessary to exchange the support beam13to different specifications, the second plate units121can be assembled into the nacelle cover100of various specifications to satisfy the requirements of multiple types of generators, which make the nacelle cover100to have greater flexibility and universality.

In a specific implementation, each first plate11may include two or more first plate units111, each second plate12may include two or more second plate units121, and the number of the first plate units111and the second plate units112can be adjusted flexibly according to the specification of the nacelle cover100, so as to better meet the requirements of different types of nacelle covers100and ensure that the first plate units111and the second plate units121can be reused.

Optionally, the first plate unit111and the second plate unit121may have the same structure, and by the above configuration, mass production of the corresponding plate units of the nacelle cover100can be achieved to the greatest extent.

As an optional implementation, in the nacelle cover100provided in the above embodiments, the cover casing10further includes a protrusion15, and a surface of at least one first plate11close to and/or away from the accommodating chamber10ais provided with the protrusion15. That is, the protrusion15may be located inside the accommodating chamber10a, and certainly, in some other examples, may be located outside the accommodating chamber10a, and when located outside the accommodating chamber10a, the protrusion15can further be used as an installation fulcrum for components of the wind turbine generator located outside the nacelle cover100to better satisfy the usage requirements of the wind turbine generator.

In some optional examples, the protrusion15is provided on a surface of at least one second plate12close to the accommodating chamber10a, and the protrusion15located on the second plate12may also be located inside the accommodating cavity10a, and certainly may located outside the accommodating chamber10a, and when located inside the accommodating chamber10a, the protrusion15acan further be used to connect with components located inside the accommodating chamber10a.

In a specific implementation, the protrusion15may be connected to the first plate11and the second plate12by welding, and certainly, in some other examples, the protrusion15may further be formed by pressing the first plate11and the second plate12, as long as the reinforcement and connection requirements can be satisfied.

Optionally, in a specific implementation, the protrusion15may be located on the first plate units111corresponding to the first plate11and on the second plate units121corresponding to the second plate12.

Referring toFIG.6toFIG.10in combination, as an optional implementation, the nacelle cover100of the above-mentioned embodiments further includes a support platform30and a first adapter seat40disposed in the accommodating chamber10a, and the support platform30is detachably connected to a surface of at least one first plate11and/or at least one second plate12facing the accommodating chamber10athrough the first adapter seat40. By providing the first adapter seat40, when the nacelle cover100includes the support platform30, the support platform30can be connected to the first plate11and/or the second plate12through the first adapter seat40, so that not only the installation requirements of the support platform30can be satisfied, but also the connection strength of the support platform30can be ensured, and meanwhile, the disassembly and assembly process of the support platform30can be simplified.

Optionally, the first adapter seat40may include a first connecting portion41and a second connecting portion42which are arranged to intersect with each other, and the first adapter seat40is detachably connected to the first plate11and/or the second plate12through the first connecting portion41, and is detachably connected to the support platform30through the second connecting portion42. By adopting the above-mentioned form, the first adapter seat40has a simplified structure and low cost, and meanwhile, can satisfy the connection requirements with the support platform30and the first plate11and/or the second plate12.

As an optional implementation, both of the first connecting portion41and the second connecting portion42may be formed as plate-like members, which can increase the contact areas of the support platform30with the first plate11and/or the second plate12, so as to better ensure the connection strength between the support platform30and the first plate11and/or the second plate12.

In some optional embodiments, the first connecting portion41and the second connecting portion42are perpendicular to each other, which can optimize the force applied to the support platform30and the first plate11and/or the second plate12, thereby improving the safety performance of the nacelle cover100.

In some optional examples, when the first plate11and/or the second plate12include the protrusion15, the first connecting portion41may be connected to the first plate11and/or the second plate12through the protrusion15, which can effectively avoid the damage to the first plate11and/or the second plate12, thereby ensuring the service life of the nacelle cover100.

Continuing to refer toFIGS.6to10, in some optional embodiments, the nacelle cover100further includes a truss50and a second adapter seat60, one end of the truss50is connected to the support beam13through the second adapter seat60, and the other end of the truss50is connected to the support platform30. By providing the truss50, the bearing capacity of the support platform30can be further improved, and the safety performance of the wind turbine generator can be better ensured.

As an optional implementation, the second adapter seat60may include a transition section61, a first installation section62and a second installation section63, and the first installation section62and the second installation section63are respectively located on two sides of the transition section61and extend opposite each other. The second adapter seat60is connected to the support beam13through the first installation section62and is connected to the truss50through the second installation section63. By adopting the above form, the second adapter seat60has a simple structure, is easy to manufacture, and can ensure the connection requirements between the truss50and the support beam13.

Optionally, the transition section61, the first installation section62and the second installation section63may be formed into an integral member, thereby being easy to form, and being able to ensure the connection strength among the three.

Optionally, each of the transition section61, all of the first installation section62and the second installation section63are formed as plate-like members, and the first installation section62and the second installation section63are respectively perpendicular to the transition section61, so that, on the basis of satisfying the connection requirements between the truss50and the support beam13, the force applied to the truss50and the support beam13can be further optimized, and the service life of the nacelle cover100can be improved.

Optionally, when the second adapter seat60is connected to the support beam13, it can be connected to the support beam13through the fasteners20for connecting the second plate12and the support beam13; by the above configuration, not only the connection requirements between the second adapter seat60and the support beam13can be satisfied, but also the nacelle cover100can be further simplified and easy to form.

As an optional implementation, the cover casing10further includes a first end plate70and a second end plate80, the first end plate70is located at one end of the support beam13along the extending direction X of the support beam13and is connected to the support beam13, and the second end plate80is located at the other end of the support beam13along the extending direction X of the support beam13and is connected to the support beam13. By providing the first end plate70and the second end plate80, the protection requirements of the nacelle cover100for the internal components of the wind turbine generator can be better ensured. Meanwhile, the cover casing10can be connected to the devices such as the hub401through the second end plate80, the power generation benefit of the wind turbine generator can be ensured.

Optionally, in order to facilitate the connection with the tower200, optionally, the nacelle cover100is provided with a mounting hole16on the first plate11disposed close to the tower200, so as to be connected with the tower200through a yaw system.

Based on the above contents, the nacelle cover100provided in the embodiments of the present application includes the cover casing10and the fasteners20, and the cover casing10includes the accommodating chamber10a, and thus the nacelle cover100can be used to accommodate multiple other components of the wind turbine generator and provide protection for the various components. By limiting that the adjacent first plate11and second plate12in at least one group hold the support beam13between them, and meanwhile, limiting that the fasteners20are disposed in the accommodating chamber10aand extend into the support beam13from the corresponding first plates11and the second plates12so as to detachably connect the corresponding plates with the support beam13, not only the transportation and assembly of the nacelle cover100can be facilitated, but also the arrangement of the support beam13can greatly improve the strength of the formed nacelle cover100, thereby ensuring the stability and service life of the wind turbine generator.

Since the fasteners20are disposed inside the accommodating chamber10aand detachably connect the plates with the support beam13, the fasteners20can work for a long time and are not easily corroded. In addition, by the above configuration, the operators can complete the disassembly and assembly of the corresponding plates and the support beam13by screwing the fasteners20and maintain and/or replace the assembled fasteners20inside the nacelle cover100, the operators can be avoided from performing the above operations outside the nacelle cover100. Therefore, the nacelle cover100provided in the embodiments of the present application is also convenient for assembly and maintenance.

Meanwhile, by limiting the first plate11to the structural form of more than two first plate units111and the connection requirements thereof, and/or limiting the second plate12to the structural form of more than two second plate units121and the connection requirements thereof, the nacelle cover100is easy to be mass-produced and transported, which can significantly reduce the difficulty and cost of production and transportation. Moreover, the requirements of various generators for different structural forms of the nacelle cover100can be satisfied better, and thus the casing of the nacelle cover100has greater flexibility and universality.

The wind turbine generator provided in the embodiments of the present application includes the nacelle cover100of the above-mentioned embodiments, and thus has high safety performance, and can ensure the safety of operators when maintaining the nacelle cover100and internal devices, thereby being easy to promote and use.

While the present application has been described with reference to the preferred embodiments, various modifications may be made and components thereof may be replaced by equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.