Cabin assembly for wind generating set and wind generating set

Abstract

The utility model provides a cabin assembly for a wind generating set and the wind generating set. The cabin assembly comprises a cabin cover main body, and an opening is formed in the top of the cabin cover main body; one end of the supporting frame is arranged in the cabin cover main body, and the other end of the supporting frame extends out of the opening; the mounting plate is arranged at the other end of the supporting frame; and the sealing cover is mounted on the mounting plate and covers a gap between the mounting plate and the opening so as to seal the opening. According to the cabin assembly, the supporting frame extends out of the opening to support the mounting plate, the top of the cabin cover body does not need to bear the weight of the mounting plate, a truss and the mounting plate do not need to clamp the top of the cabin cover body, and the top of the cabin cover body can be prevented from deforming due to the fact that the mounting plate is assembled.

Description

Technical Field

[0001] The utility model relates to the field of wind power generation, in particular to a nacelle component for a wind power generator set and a wind power generator set. Background Art

[0002] The traditional nacelle cover is made of fiberglass. In order to install a wind measuring device on the nacelle cover, a mounting plate supporting the wind measuring device needs to be provided on the top of the nacelle cover. The mounting plate is installed on the top of the nacelle cover, and the truss on the inside of the nacelle cover and the mounting plate clamp the top wall of the nacelle cover. The mounting plate is stable and easy to install. At the same time, it is also convenient to seal to prevent external water or dust from entering the interior of the nacelle cover.

[0003] However, as wind turbines become larger, the load-bearing requirements for the top mounting plate are increasing. If the traditional mounting plate installation method is used, the top plate can easily be clamped and deformed. Utility Model Content

[0004] Therefore, an object of the present invention is to provide a nacelle assembly for a wind turbine generator set and a wind turbine generator set, so as to at least solve one of the problems existing in the above-mentioned prior art or related art.

[0005] A first aspect of the present invention provides a nacelle assembly for a wind turbine generator set, the nacelle assembly comprising: a nacelle cover body, the top of which is provided with an opening; a support frame, one end of the support frame is provided in the nacelle cover body, and the other end of the support frame extends out of the opening; a mounting plate, provided at the other end of the support frame; and a sealing cover, mounted on the mounting plate and covering the gap between the mounting plate and the opening to seal the opening.

[0006] In some embodiments, the top of the cabin cover body is also provided with a water retaining portion protruding outward from the top, wherein the water retaining portion is arranged around the edge of the opening; the sealing cover includes a top wall and a side wall extending downward from the top wall, and the lower part of the side wall of the sealing cover is surrounded by the inner side and / or outer side of the water retaining portion.

[0007] In some embodiments, a labyrinth-type water-blocking channel is provided between the water-blocking portion and the lower portion of the side wall of the sealing cover.

[0008] In some embodiments, the nacelle cover further includes: a sealing member, which is arranged at the labyrinth-type water retaining channel.

[0009] In some embodiments, the lower portion of the side wall of the sealing cover is arranged on the outside of the water retaining portion, and the projection of the side wall of the sealing cover and the water retaining portion on the vertical plane at least partially overlaps, the side wall of the sealing cover is separated from the water retaining portion by a first preset gap, the bottom of the side wall of the sealing cover is separated from the top of the cabin cover body by a second preset gap, and the side wall of the sealing cover and the water retaining portion are arranged to form a labyrinth-type water retaining channel.

[0010] In some embodiments, the sealing member is provided at an end of the water stop portion away from the nacelle cover body, and the sealing member is sealingly engaged with a side wall of the sealing cover.

[0011] In some embodiments, the sealing member is embedded in an end of the water retaining portion away from the nacelle cover body.

[0012] In some embodiments, an edge of the opening is bent toward the outside of the nacelle cover body to form a protrusion, and the protrusion constitutes a water retaining portion.

[0013] In some embodiments, the top wall of the sealing cover has an escape opening, the mounting plate is disposed at the escape opening, and the mounting plate is located on the inner side or the outer side of the sealing cover.

[0014] In some embodiments, the nacelle assembly further includes a seal distributed circumferentially around the opening and sandwiched between a bottom portion of the seal cover and a top portion of the nacelle cover body.

[0015] In some embodiments, the nacelle cover body is an aluminum alloy nacelle cover.

[0016] In some embodiments, the nacelle assembly includes a base, which supports the support frame, and the nacelle cover body can be connected to the tower of the wind turbine generator set through the base.

[0017] A second embodiment of the present invention provides a wind turbine generator set, which includes a tower and a nacelle assembly installed at the upper end of the tower. The nacelle assembly is the nacelle assembly as described in any one of the above embodiments.

[0018] The nacelle assembly for a wind turbine generator set provided by the utility model has an opening provided at the top of the nacelle cover body, allowing a support frame to extend out of the opening to support the mounting plate. This eliminates the need for the top of the nacelle cover body to bear the weight of the mounting plate, thereby preventing deformation of the top of the nacelle cover body due to assembly of the mounting plate. Furthermore, a sealing cover is used to cover the gap between the mounting plate and the opening, thereby preventing foreign matter such as dust and water from entering the interior of the nacelle cover body through the gap.

[0019] Additional aspects and / or advantages of the present general inventive concept will be set forth in part in the following description, and some will be clear from the description or may be learned through practice of the present general inventive concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects and features of the present invention will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A schematic structural diagram of a nacelle cover body according to an embodiment of the present application is shown;

[0022] Figure 2 A schematic diagram showing the partial appearance structure of the top of a cabin assembly according to an embodiment of the present application is shown;

[0023] Figure 3 A partial longitudinal cross-sectional schematic diagram of a nacelle assembly according to an embodiment of the present application is shown.

[0024] Figures 1 to 3 Description of Figure Numbers:

[0025] 10 nacelle cover body; 110 opening; 120 water retaining portion;

[0026] 20 sealing cover; 210 top wall; 211 avoidance port; 220 side wall; 230 labyrinth-type water retaining channel; 231 inlet end; 232 outlet end;

[0027] 30 mounting plate;

[0028] 40 seals;

[0029] 50 support frame. DETAILED DESCRIPTION

[0030] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear after understanding the disclosure of the present application. For example, the order of operations described herein is merely an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and conciseness, descriptions of features known in the art may be omitted.

[0031] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will become clear after understanding the disclosure of this application.

[0032] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0033] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are used solely to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, what is referred to as a first member, first component, first region, first layer, or first portion in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

[0034] In the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present therebetween. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present therebetween.

[0035] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term "plurality" represents any number of two and more than two.

[0036] The definitions of directional terms such as "below", "top" and "bottom" in this application are based on the orientation of the product in normal use, unless otherwise specified.

[0037] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art after understanding the present invention. Unless expressly defined otherwise herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and should not be interpreted in an idealized or overly formal manner.

[0038] The nacelle is the outer shell of a wind turbine nacelle. Its primary function is to prevent rain, snow, wind, and sand from entering the nacelle, ensuring the normal operation of the equipment inside. Furthermore, the nacelle provides a safe and reliable space for equipment operation and maintenance.

[0039] Traditional nacelles are made of fiberglass reinforced plastic (FRP) and are formed by vacuum infusion of glass fiber and unsaturated resin. To mount a wind measuring device, a mounting plate is typically installed on top of the nacelle to support the device. Trusses and the mounting plate on the inside of the nacelle clamp the top wall of the nacelle, ensuring a stable mounting. This simple structure facilitates installation and sealing. However, as wind turbines grow larger, the load-bearing requirements placed on the top mounting plate are increasing. If the traditional mounting plate installation method is used, the top plate is easily deformed by the clamping.

[0040] Based on this, an embodiment of the present invention provides a nacelle assembly for a wind turbine generator set, utilizing a support frame 50 extending from the nacelle cover body 10 to support the mounting plate 30. This eliminates the need for the nacelle cover body 10 to bear weight, and eliminates the need for clamping the top wall of the nacelle cover body 10. This prevents deformation of the top of the nacelle cover body 10 due to assembly of the mounting plate 30. The mounting plate 30 can be used to support a wind measuring device, for example, by providing a top bracket on the mounting plate 30 to support the wind measuring device. Of course, the mounting plate 30 of this embodiment is not limited to supporting wind measuring devices, but can also be used to carry other components.

[0041] The following will be combined Figures 1 to 3 The present invention introduces a cabin assembly provided by an embodiment of the present invention.

[0042] like Figures 1 to 3 As shown, the first embodiment of the present invention provides a nacelle assembly for a wind turbine generator set, the nacelle assembly comprising: a nacelle cover body 10, the top of the nacelle cover body 10 is provided with an opening 110; a support frame 50, one end of the support frame 50 is provided in the nacelle cover body 10, and the other end of the support frame 50 extends out of the opening 110; a mounting plate 30, provided at the other end of the support frame 50; a sealing cover 20, mounted on the mounting plate 30 and covering the gap between the mounting plate 30 and the opening 110 to seal the opening 110.

[0043] The cabin assembly provided by the embodiment of the present invention provides an opening 110 at the top of the cabin cover body 10, so that the support frame 50 extends out of the opening 110 to support the mounting plate 30. There is no need for the top of the cabin cover body 10 to bear the weight of the mounting plate 30, and there is no need for a truss and the mounting plate 30 to clamp the top of the cabin cover body 10. This can prevent the top of the cabin cover body 10 from being deformed due to the assembly of the mounting plate 30.

[0044] Especially when the nacelle cover body 10 is made of aluminum alloy, the above technical effect is particularly obvious. Of course, the nacelle cover body 10 can also be made of other metal or non-metal materials, not limited to aluminum alloy.

[0045] In addition, the sealing cover 20 covers the gap between the mounting plate 30 and the opening 110 , thereby preventing foreign matter such as dust or water from entering the interior of the nacelle cover body 10 through the gap.

[0046] Here, one end of the support frame 50 is used to support the mounting plate 30, and the other end of the support frame 50 can be fixed to other components within the nacelle cover body 10, or can be indirectly fixed to a base located below the nacelle cover body 10 in the wind turbine generator set. As long as the support frame 50 supports the mounting plate 30 and satisfies the assembly of the mounting plate 30, it is not necessary to clamp the top wall of the nacelle cover body 10.

[0047] The number of support frames 50 can be one, for example, the support frame 50 is a relatively thick hollow column, which is supported at the bottom center area of ​​the mounting plate 30. The number of support frames 50 can also be multiple, for example, the support frame 50 is a support rod or a support plate, and multiple support rods or multiple support plates are distributed circumferentially around the bottom center of the mounting plate 30 to ensure stable support of the mounting plate 30.

[0048] In addition, the mounting plate 30 is supported by the support frame 50, and the sealing cover 20 connected to the mounting plate 30 is indirectly supported by the support frame 50. There may be a gap between the bottom of the side wall 220 of the sealing cover 20 and the top of the cabin cover body 10. Figure 3 This eliminates the need for the nacelle cover body 10 to bear the weight of the sealing cover 20, further preventing deformation of the top of the nacelle cover body 10. Furthermore, this gap design reduces assembly errors between the mounting plate 30 and the nacelle cover body 10 and prevents vibrations from components on the mounting plate 30 (such as the cooling fan) from being transmitted to the nacelle cover body 10, thus preventing resonance.

[0049] Of course, the bottom of the side wall 220 of the sealing cover 20 can also be in contact with the top of the cabin cover body 10, so that the gap between the two is very small, which is conducive to preventing external dust, water and other impurities from entering the interior of the cabin cover body 10 through the gap.

[0050] Since the top opening 110 of the nacelle cover body 10 is required to allow the support frame 50 to extend into the nacelle cover body 10, the design of the opening 110 has a certain risk of water ingress. Therefore, in order to improve the water blocking effect, further, in some embodiments, such as Figure 3 As shown, the top of the nacelle cover body 10 is further provided with a water retaining portion 120 protruding outward from the top, wherein the water retaining portion 120 is arranged around the edge of the opening 110. The water retaining portion 120 can circumferentially retain water, preventing liquid from entering the opening 110. The sealing cover 20 includes a top wall 210 and side walls 220 extending downward from the top wall 210. The lower portion of the side walls 220 of the sealing cover 20 is arranged around the inner side and / or outer side of the water retaining portion 120.

[0051] When the lower portion of the sidewall 220 of the sealing cover 20 is positioned outside the water barrier 120, the sidewall 220 and water barrier 120 of the sealing cover 20 can achieve a dual water-blocking effect. When water flows along the top of the cabin cover body 10 toward the opening 110, it must first flow through the gap between the lower portion of the sidewall 220 of the sealing cover 20 and the top of the cabin cover body 10, and then pass through the water barrier 120 before entering the opening 110, thus achieving a good water-blocking effect. Furthermore, the lower portion of the sidewall 220 of the sealing cover 20 is positioned outside the water barrier 120, leaving a certain distance between the lower portion of the sidewall 220 of the sealing cover 20 and the opening 110, with the water barrier 120 in between. Therefore, even if rain falls externally and impacts the sidewall 220 of the sealing cover 20 at an angle, it is unlikely to flow directly into the opening 110.

[0052] When the lower portion of the side wall 220 of the sealing cover 20 is disposed within the inner side of the water retaining portion 120, since the sealing cover 20 is used to seal the opening 110, it is assumed that the lower portion of the side wall 220 of the sealing cover 20 is still disposed within the outer periphery of the opening 110. The lower portion of the side wall 220 of the sealing cover 20 is spaced between the water retaining portion 120 and the opening 110, thereby achieving a double water-retaining effect. When water flows along the top of the nacelle cover body 10 toward the opening 110, it must first overflow the water retaining portion 120 and then flow through the gap between the lower portion of the side wall 220 of the sealing cover 20 and the top of the nacelle cover body 10 before entering the opening 110, thereby achieving a good water-retaining effect.

[0053] As an example, Figure 3 As shown, the edge of opening 110 bends toward the exterior of nacelle cover body 10 to form a protrusion, which constitutes water retaining portion 120. The protrusion extends vertically, resulting in a simple structure and easy processing. Of course, in other examples, the protrusion can extend vertically first and then horizontally, or in other directions, and the protrusion can have a variety of structures.

[0054] To improve the water-blocking effect, further, in some embodiments, as Figure 3 As shown, a labyrinth-type water-blocking channel 230 is provided between the water-blocking portion 120 and the lower portion of the sidewall 220 of the sealing cover 20. This extends the flow path of external water entering the opening 110, increases the difficulty of water inflow, and thus improves the water-blocking effect.

[0055] Specifically, the water retaining portion 120 and the lower portion of the side wall 220 of the sealing cover 20 can be used to directly enclose a labyrinthine water retaining channel 230. In this case, the water retaining portion 120 can be designed as a protrusion protruding upward from the top of the cabin cover body 10, so that the structure of the labyrinthine water retaining channel 230 will not be very complicated and will be convenient for processing. The water retaining portion 120 can also be designed to have a more complex structure, for example, the water retaining portion 120 can be a protrusion that protrudes upward from the top of the cabin cover body 10, then bends downward and extends, and then bends upward and extends. The complexity of the labyrinthine water retaining channel 230 can be designed based on the lower portion of the side wall 220 of the sealing cover 20 and the water retaining portion 120.

[0056] A labyrinth water retaining structure may be added between the water retaining portion 120 and the lower portion of the side wall 220 of the sealing cover 20 to form a labyrinth water retaining channel 230, or the labyrinth water retaining structure may be combined with the water retaining portion 120 and the lower portion of the side wall 220 of the sealing cover 20 to form a labyrinth water retaining channel 230.

[0057] As an example, Figure 3 As shown, the labyrinth-shaped water retaining channel 230 has an inlet end 231 and an outlet end 232, with the outlet end 232 being adjacent to the opening 110. The labyrinth-shaped water retaining channel 230 extends upward at least once from the inlet end 231 to the outlet end 232. For example, the labyrinth-shaped water retaining channel 230 extends in an L-shape, an N-shape, or an M-shape. After water enters the labyrinth-shaped water retaining channel 230 from the inlet end 231, the flow of water is restricted by the upwardly extending channel portion, thereby achieving a good water retaining effect.

[0058] As an example, Figure 3 As shown, the lower portion of the side wall 220 of the sealing cover 20 is arranged around the outside of the water retaining portion 120, and the projections of the side wall 220 of the sealing cover 20 and the water retaining portion 120 on the vertical plane at least partially overlap, the side wall 220 of the sealing cover 20 and the water retaining portion 120 are separated by a first preset gap, the bottom of the side wall 220 of the sealing cover 20 and the top of the nacelle cover body 10 are separated by a second preset gap, and the side wall 220 of the sealing cover 20 and the water retaining portion 120 are arranged to form a labyrinth water retaining channel 230. Here, the side wall 220 of the sealing cover 20 and the water retaining portion 120 are directly used to enclose the labyrinth water retaining channel 230, which has a simple structure and is easy to process. If water from the outside wants to enter the opening 110, it must first pass through the second preset gap, and then enter between the side wall 220 of the sealing cover 20 and the water retaining portion 120, overflow the water retaining portion 120 and then flow toward the opening 110, changing the flow direction at least twice to form a labyrinth-like water retaining channel 230, which has a good water retaining effect.

[0059] To improve the water blocking effect, in some embodiments, the nacelle cover further includes a seal 40, which is circumferentially distributed around the opening 110 to prevent water from entering the opening 110. The seal 40 blocks the necessary path for water to enter the opening 110, thereby achieving a good water blocking effect.

[0060] Regarding the setting position of the seal 40, the seal 40 can be further clamped between the bottom of the side wall 220 of the sealing cover 20 and the top of the cabin cover body 10 to prevent external water from flowing to the opening 110 through the gap between the sealing cover 20 and the top of the cabin cover body 10.

[0061] Furthermore, a water retaining portion 120 protruding outward from the top is provided on the top of the cabin cover body 10, and the lower part of the side wall 220 of the sealing cover 20 is surrounded on the inner side and / or outer side of the water retaining portion 120. The sealing member 40 can also be provided in the gap between the side wall 220 of the sealing cover 20 and the water retaining portion 120, and distributed circumferentially around the water retaining portion 120 to prevent external water from flowing to the opening 110 through the gap.

[0062] In specific applications, such as Figure 3 As shown, the seal 40 can be positioned at the end of the water retaining portion 120 away from the nacelle cover body 10, and the seal 40 can be sealingly engaged with the sidewall 220 of the sealing cover 20. For example, the seal 40 can be embedded in the end of the water retaining portion 120 away from the nacelle cover body 10. This facilitates installation of the seal 40. Of course, the seal 40 can also be sandwiched between the water retaining portion 120 and the sidewall 220 of the sealing cover 20. The seal 40 can be a sealing strip.

[0063] Furthermore, when a labyrinth water blocking channel 230 is provided between the water blocking portion 120 and the lower portion of the side wall 220 of the sealing cover 20, a sealing member 40 can be provided at the labyrinth water blocking channel 230. The sealing member 40 blocks the labyrinth water blocking channel 230 to improve the water blocking effect.

[0064] In specific applications, such as Figure 3 As shown, when the water retaining portion 120 and the lower portion of the side wall 220 of the sealing cover 20 directly form a labyrinth water retaining channel 230, the sealing member 40 is arranged in the gap between the side wall 220 of the sealing cover 20 and the water retaining portion 120, thereby achieving the setting of the sealing member 40 in the labyrinth water retaining channel 230 and realizing the blocking of the labyrinth water retaining channel 230.

[0065] Of course, when a labyrinth water retaining structure is added between the water retaining portion 120 and the lower portion of the side wall 220 of the sealing cover 20 to form a labyrinth water retaining channel 230, the sealing member 40 can be directly arranged on the labyrinth water retaining structure to block the labyrinth water retaining channel 230. Alternatively, the sealing member 40 can be arranged on one side of the labyrinth water retaining structure to directly block the gap between the side wall 220 of the sealing cover 20 and the water retaining portion 120, thereby also preventing water from entering the opening 110.

[0066] Regarding the connection method between the mounting plate 30 and the sealing cover 20, further, in some embodiments, as Figure 2 and Figure 3 As shown, the top wall 210 of the sealing cover 20 has a relief opening 211, and the mounting plate 30 is disposed at the relief opening 211. The mounting plate 30 is located inside or outside the sealing cover 20. The mounting plate 30 is exposed through the relief opening 211 to support a wind measuring device or other components.

[0067] Furthermore, sealant is filled in the connection gap between the edge of the sealing cover 20 near the avoidance opening 211 and the edge of the mounting plate 30 to prevent external water from entering the interior of the nacelle cover body 10 through the connection gap between the mounting plate 30 and the sealing cover 20.

[0068] Furthermore, in some embodiments, the nacelle assembly includes a base (not shown), through which the nacelle cover body 10 is connected to the tower, and the base supports the support frame 50. In this way, the weight of the mounting frame and the components mounted on the mounting frame is transferred to the base, ensuring stable and reliable installation.

[0069] As an example, the top of the cabin cover body 10 has multiple openings 110, and the number of mounting plates 30, support frames 50 and sealing covers 20 is also multiple and distributed corresponding to the multiple openings 110, and the base supports multiple support frames 50 at the same time.

[0070] Furthermore, in some embodiments, the cabin cover body is an aluminum alloy cabin cover. It is lightweight and the material is recyclable. The following is a detailed description of the cabin assembly of an embodiment of the present invention. Figures 1 to 3As shown, the nacelle assembly includes a nacelle cover body 10, a mounting plate 30, a support frame 50, and a sealing cover 20. The sealing cover 20 is a carbon steel shell, while the nacelle cover body 10 is an aluminum alloy cover body. The top of the nacelle cover body 10 has an opening 110. The edge of the opening 110 is bent upward to form a water retaining rib, which is configured as a water retaining portion 120. The mounting plate 30 is located above the nacelle cover body 10, and the support frame 50 extends out of the opening 110 to support the mounting plate 30. One end of the sealing cover 20 is connected to the mounting plate 30, and the other end of the sealing cover 20 is arranged around the outer periphery of the water retaining rib, forming a labyrinthine water retaining channel 230 with the water retaining rib. The top of the water retaining rib is inserted into a sealing strip, and the outer periphery of the sealing strip is sealed against the side wall 220 of the sealing cover 20. The sealing strip is configured as a seal 40 to seal the labyrinthine water retaining channel 230. The mounting surface of the mounting plate 30 is exposed through the avoidance opening 211 on the top wall 210 of the sealing cover 20, and can fit tightly with the mounting seat of the wind measuring device for secure installation.

[0071] Among them, the design of the labyrinth-type water-blocking channel 230 can not only play a role in blocking water, but also prevent the vibration generated by the components above the mounting plate 30 (such as the cooling fan) from being transmitted to the cabin cover body 10, thereby preventing resonance. In addition, the labyrinth-type water-blocking channel 230 can offset the assembly error between the mounting frame and the cabin cover body 10, thereby improving assembly efficiency. Moreover, the sealing strip is combined with the labyrinth-type water-blocking channel 230 to achieve a good rainproof effect. The overall installation and sealing water-blocking structure of the mounting plate 30 is relatively simple and highly reliable, which is conducive to meeting the 25-year service life requirement of the wind turbine generator set.

[0072] A second embodiment of the present invention provides a wind turbine generator set, which includes a tower and a nacelle assembly installed at the upper end of the tower. The nacelle assembly is the nacelle assembly as described in any one of the above embodiments.

[0073] The wind turbine generator set provided by the embodiment of the present invention has the nacelle assembly of any of the above embodiments, and thus has the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0074] Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It should be understood that, in the opinion of those skilled in the art, such modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. A nacelle assembly for a wind turbine generator set, characterized in that: The cabin assembly comprises: A nacelle cover body (10), wherein the top of the nacelle cover body (10) is provided with an opening (110); a support frame (50), one end of the support frame (50) being disposed in the nacelle cover body (10), and the other end of the support frame (50) extending out of the opening (110); A mounting plate (30) is provided at the other end of the support frame (50); A sealing cover (20) is mounted on the mounting plate (30) and covers the gap between the mounting plate (30) and the opening (110) to seal the opening (110).

2. The nacelle assembly according to claim 1, wherein: The top of the cabin cover body (10) is also provided with a water retaining portion (120) protruding outward from the top, wherein the water retaining portion (120) is arranged around the edge of the opening (110); the sealing cover (20) includes a top wall (210) and a side wall (220) extending downward from the top wall (210), and the lower part of the side wall (220) of the sealing cover (20) is arranged on the inner side and / or outer side of the water retaining portion (120).

3. The nacelle assembly according to claim 2, wherein: A labyrinth-type water-blocking channel (230) is provided between the water-blocking portion (120) and the lower portion of the side wall (220) of the sealing cover (20).

4. The nacelle assembly according to claim 3, wherein: The nacelle cover further comprises: A sealing member (40) is provided at the labyrinth-type water-blocking channel (230).

5. The nacelle assembly according to claim 3, characterized in that The lower part of the side wall (220) of the sealing cover (20) is arranged on the outside of the water retaining portion (120), and the projections of the side wall (220) of the sealing cover (20) and the water retaining portion (120) on the vertical plane at least partially overlap, the side wall (220) of the sealing cover (20) and the water retaining portion (120) are separated by a first preset gap, the bottom of the side wall (220) of the sealing cover (20) and the top of the cabin cover body (10) are separated by a second preset gap, and the side wall (220) of the sealing cover (20) and the water retaining portion (120) are surrounded by the labyrinth water retaining channel (230).

6. The nacelle assembly according to claim 4, characterized in that The sealing member (40) is provided at an end of the water retaining portion (120) away from the nacelle cover body (10), and the sealing member (40) is sealingly engaged with a side wall (220) of the sealing cover (20).

7. The nacelle assembly according to claim 4, characterized in that The sealing member (40) is embedded in an end of the water retaining portion (120) away from the nacelle cover body (10).

8. The nacelle assembly according to claim 2, wherein: The edge of the opening (110) is bent toward the outside of the nacelle cover body (10) to form a protrusion, and the protrusion constitutes the water retaining portion (120).

9. The nacelle assembly according to any one of claims 1 to 3 and 5 to 8, characterized in that: The top wall (210) of the sealing cover (20) has a relief opening (211), the mounting plate (30) is arranged at the relief opening (211), and the mounting plate (30) is located on the inner side or the outer side of the sealing cover (20); and / or, The nacelle assembly further comprises a seal (40), the seal (40) being distributed circumferentially around the opening (110) and being sandwiched between the bottom of the sealing cover (20) and the top of the nacelle cover body (10); and / or, The nacelle cover body (10) is an aluminum alloy nacelle cover; and / or, The nacelle assembly comprises a base, the base supports the support frame (50), and the nacelle cover body (10) can be connected to the tower of the wind turbine generator set through the base.

10. A wind turbine generator set comprising a tower and a nacelle assembly mounted on an upper end of the tower, characterized in that: The nacelle assembly is the nacelle assembly according to any one of claims 1 to 9.

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