Profile structure, cabin cover and wind generating set

Abstract

The utility model provides a profile structure, a cabin cover and a wind generating set. The profile structure is used for being installed on a cabin cover body of the wind generating set, a bottom opening is formed in the bottom wall of the cabin cover body, the profile structure comprises a grease receiving groove and an installation part, and the installation part is used for being connected to the bottom opening so that the grease receiving groove can receive grease on the inner side of the bottom opening. According to the sectional material structure, the structural strength of the bottom opening can be improved, and the grease receiving groove is used for receiving grease, so that compared with the mode that the grease directly drips to the bottom of the inner side of the cabin cover body, the grease can be prevented from seeping to the outside of the cabin cover from the joint of the adjacent sectional materials of the cabin cover body, and environmental pollution is reduced.

Description

Technical Field

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

[0002] The traditional nacelle cover is made of fiberglass and has an opening at the bottom for the tower to extend into. To prevent grease on the yaw system from dripping out of the opening, a sealing strip is installed on the flange at the bottom of the nacelle cover. The sealing strip is used to cover the opening, allowing the yaw grease to drip directly to the inner bottom of the nacelle cover.

[0003] However, with the increasing size of wind turbines, the main body of the nacelle cover is usually composed of multiple pieces, and a profile structure is used to support the multiple pieces. If the traditional solution is used to guide the grease to the inner bottom of the nacelle cover, the grease can easily seep from the joints between the adjacent profiles or pieces of the nacelle cover to the outside of the nacelle cover, causing environmental pollution. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide a profile structure, a nacelle cover and a wind turbine generator set to solve at least one of the problems existing in the above-mentioned prior art or related art.

[0005] The first aspect of the embodiment of the utility model provides a profile structure, which is used to be installed on the nacelle cover body of a wind turbine generator set, and a bottom opening is provided on the bottom wall of the nacelle cover body, wherein the profile structure includes a grease receiving groove and an installation portion, and the installation portion is used to be connected at the bottom opening so that the grease receiving groove can receive grease on the inner side of the bottom opening.

[0006] In some embodiments, the profile structure includes a first side panel and a second side panel spaced apart in a first direction, and a third side panel and a fourth side panel spaced apart in a second direction, and the first side panel, the second side panel, the third side panel and the fourth side panel form a grease receiving groove; wherein, the first side panel is provided with a grease receiving port connected to the grease receiving groove, or the third side panel is provided with a grease receiving port connected to the grease receiving groove, or the first side panel and the third side panel are provided with grease receiving ports connected to each other and the grease receiving ports are connected to the grease receiving groove.

[0007] In some embodiments, the profile structure also includes a first reinforcing plate, the two side plate surfaces of the first reinforcing plate face the first side plate and the second side plate respectively, and the two ends of the first reinforcing plate are respectively connected to the third side plate and the fourth side plate to separate the grease connection groove into a first cavity and a second cavity in the first direction, the grease connection port is connected to the first cavity, and the mounting portion is arranged in the second cavity.

[0008] In some embodiments, the profile structure also includes a second reinforcing plate, which is cross-arranged with the first reinforcing plate, and the two side plate surfaces of the second reinforcing plate face the third side plate and the fourth side plate respectively, and the two ends of the second reinforcing plate are respectively connected to the first side plate and the second side plate to separate the first cavity into the first sub-cavity and the second sub-cavity in the second direction, and to separate the second cavity into the third sub-cavity and the fourth sub-cavity in the second direction, the grease connection port is connected to the first sub-cavity, and the mounting portion is arranged in the third sub-cavity.

[0009] In some embodiments, a connecting portion is provided in the grease receiving groove, and the connecting portion is used to connect a sealing strip extending into the grease receiving groove through the grease receiving port, so that the grease flows into the grease receiving groove along the sealing strip.

[0010] In some embodiments, the connecting portion is provided on the inner wall of the first side panel.

[0011] In some embodiments, the profile structure is an aluminum alloy profile structure.

[0012] The second aspect of the present invention provides a nacelle cover for installation at the top of the tower of a wind turbine generator set, the nacelle cover comprising: a nacelle cover body, a bottom opening being provided on the bottom wall of the nacelle cover body; a profile structure as in any one of the above embodiments, the profile structure being distributed circumferentially along the bottom opening, the cavity enclosed by the profile structure being used for the top of the tower to extend into; a sealing strip, which is annular, the first end of the sealing strip extending into the grease receiving groove, the second end of the sealing strip extending radially inward from above the grease receiving port of the grease receiving groove.

[0013] In some embodiments, the second end of the sealing strip extends obliquely upward toward the side wall of the tower, so that grease dripping on the sealing strip can be drained into the grease collecting groove.

[0014] In some embodiments, the second end of the sealing strip is configured to be in sealing contact with a side wall of the tower.

[0015] In some embodiments, the sealing strip includes a first sheet and a second sheet extending along the circumferential direction, the first sheet and the second sheet are connected to each other, the cross-section of the sealing strip is L-shaped, the first sheet is vertically arranged in the grease groove, and the second sheet extends horizontally from the upper end of the first sheet toward the tower and is inclined upward at a certain angle.

[0016] In some embodiments, the nacelle cover body is an aluminum alloy nacelle cover body.

[0017] In some embodiments, the nacelle cover body includes a connecting beam connected to a bottom wall of the nacelle cover body, and the mounting portion is connected to the connecting beam.

[0018] The third aspect of the present invention provides a wind turbine generator set, which includes a tower, a yaw system installed at the upper end of the tower, and a nacelle cover. The nacelle cover is a nacelle cover as described in any of the above embodiments, and the grease collecting groove is used to receive grease dripping from the yaw system.

[0019] The profile structure provided in the embodiments of the present invention has a grease receiving groove. When the profile structure is applied to the bottom opening of the bottom wall of the nacelle cover body, the profile structure not only improves the structural strength of the bottom opening, but also uses the grease receiving groove to receive grease. Compared to grease dripping directly onto the inner bottom of the nacelle cover body, this prevents grease from seeping outside the nacelle cover through the seams between adjacent profiles or sheets of the nacelle cover body, thereby reducing environmental pollution. Furthermore, by directly forming the grease receiving groove in the profile structure at the bottom opening, the need for a separate grease receiving component is eliminated, reducing parts count and saving costs.

[0020] The nacelle cover provided by this embodiment features a profile structure distributed circumferentially along the bottom opening, facilitating grease collection around the tower. The first end of the sealing strip extends into the grease collection groove of the profile structure, while the second end extends radially inward from the groove. This extended portion of the sealing strip increases the grease collection area, reducing the likelihood of grease leaking out of the nacelle cover. Furthermore, the sealing strip facilitates the flow of grease into the grease collection groove, effectively collecting the grease.

[0021] The wind turbine generator set provided by the embodiment of the present invention has the nacelle cover 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.

[0022] 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

[0023] 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:

[0024] Figure 1 A schematic cross-sectional view showing a profile structure of an embodiment of the present application;

[0025] Figure 2 A partial longitudinal cross-sectional schematic diagram of a nacelle cover and a tower according to an embodiment of the present application is shown;

[0026] Figure 3 Shown Figure 2 A local enlarged schematic diagram of point I in the middle.

[0027] Figures 1 to 3 Description of Figure Numbers:

[0028] 10 profile structure;

[0029] 101 first side panel; 102 second side panel; 103 third side panel; 104 fourth side panel; 105 first reinforcement panel; 106 second reinforcement panel;

[0030] 110 grease receiving groove; 111 grease receiving port;

[0031] 120 first cavity; 121 first sub-cavity; 122 second sub-cavity;

[0032] 130 second cavity; 131 third sub-cavity; 132 fourth sub-cavity;

[0033] 140 mounting portion; 141 first convex structure; 142 first insertion hole;

[0034] 150 connecting portion; 151 second convex structure; 152 second insertion hole;

[0035] 20 nacelle cover body; 211 bottom opening; 212 connecting beam;

[0036] 30 sealing strip; 310 first sheet; 320 second sheet;

[0037] 40 second connecting member;

[0038] 50 towers. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The definitions of directional terms such as "upper and lower" and "bottom" in this application are based on the orientation of the product in normal use, unless otherwise specified.

[0046] 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.

[0047] 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.

[0048] Traditional nacelle covers are made of fiberglass reinforced plastic (FRP) and are formed by vacuum infusion of glass fiber and unsaturated resin. However, after the FRP nacelle cover reaches the end of its life cycle, it becomes a solid waste that is difficult to dispose of and pollutes the environment.

[0049] Traditional fiberglass nacelles have an opening on the bottom wall for the tower to extend through. To prevent grease from the yaw system from dripping out of the opening, a sealing strip is installed on the flange at the bottom of the nacelle. This seal covers the opening and directs the yaw grease directly to the inside bottom of the nacelle. The area around the tower is dirty and difficult to clean.

[0050] However, as wind turbines become larger, the main body of the nacelle cover is usually made of multiple pieces spliced ​​together, and a profile structure is used to support the multiple pieces. If the traditional solution is used to guide grease to the inner bottom of the nacelle cover, the grease can easily seep to the outside of the nacelle cover from the seams between adjacent profiles or pieces of the nacelle cover.

[0051] Based on this, the embodiment of the present utility model proposes a profile structure 10 with a grease receiving groove 110. The grease receiving groove 110 of the profile structure 10 is used to receive grease, which can prevent grease from seeping from the joints of adjacent profiles of the metal cabin cover to the outside of the cabin cover, thereby reducing environmental pollution. Among them, the profile structure 10 is made of aluminum alloy material. By utilizing the inherent advantages of the aluminum alloy profile to process the profile structure 10 with the grease receiving groove 110, the processing is convenient. At this time, the material of the cabin cover body 20 is also aluminum alloy. Of course, the profile structure 10 and the cabin cover body 20 can also be made of other materials, not limited to aluminum alloy.

[0052] The following is an example of the profile structure 10 made of aluminum alloy. Figures 1 to 3 The profile structure 10 and the nacelle cover provided in the embodiment of the present invention are introduced.

[0053] like Figure 1 、 Figure 2 and Figure 3 As shown, the first embodiment of the present invention provides a profile structure 10, which is used to be installed on the nacelle cover body 20 of the wind turbine generator set. A bottom opening 211 is provided on the bottom wall of the nacelle cover body 20. The profile structure 10 includes a grease receiving groove 110 and a mounting portion 140. The mounting portion 140 is used to be connected to the bottom opening 211 so that the grease receiving groove 110 can receive grease on the inner side of the bottom opening 211.

[0054] The profile structure 10 provided in the embodiment of the present invention has a grease receiving groove 110. When the profile structure 10 is applied to the bottom opening 211 of the bottom wall of the nacelle cover body 20, the profile structure 10 not only improves the structural strength at the bottom opening 211, but also utilizes the grease receiving groove 110 to receive grease. Compared to grease dripping directly onto the inner bottom of the nacelle cover body 20, this prevents grease from seeping from the seams of adjacent profiles or sheets of the nacelle cover body 20 to the outside of the nacelle cover, thereby reducing environmental pollution. Furthermore, the grease receiving groove 110 is designed directly on the profile structure 10 at the bottom opening 211, eliminating the need for an additional independent grease receiving component, reducing parts count and saving costs.

[0055] In addition, if Figure 2 and Figure 3 As shown, when the mounting portion 140 is connected to the bottom opening 211, the grease receiving groove 110 receives grease on the inner side of the bottom opening 211. When the top end of the tower 50 extends into the interior of the cabin cover body 20 through the bottom opening 211, the grease receiving groove 110 is located in the gap between the outer periphery of the tower 50 and the bottom opening 211. Grease is received there, which can reduce the probability of grease dripping from the gap to the outside of the cabin cover body 20, reduce pollution, and will not occupy too much internal space of the cabin cover body 20.

[0056] In specific applications, the profile structure 10 can be an integrated annular structure, adapted to the size of the bottom opening 211 and connected at the bottom opening 211, or two or more sections of the profile structure 10 can be used to connect the multiple sections of the profile structure 10 together along the circumference of the bottom opening 211, thereby achieving circumferential grease collection and reducing the probability of grease dripping to the outside of the cabin cover body 20.

[0057] Regarding the specific structure of the profile structure 10, further, in some embodiments, such as Figures 1 to 3 As shown, the profile structure 10 includes a first side panel 101 and a second side panel 102 spaced apart in a first direction, and a third side panel 103 and a fourth side panel 104 spaced apart in a second direction. The first side panel 101, the second side panel 102, the third side panel 103 and the fourth side panel 104 form a grease receiving groove 110.

[0058] Furthermore, a grease receiving port 111 communicating with the grease receiving groove 110 may be provided on the first side plate 101 .

[0059] Alternatively, the third side plate 103 may be provided with a grease receiving port 111 communicating with the grease receiving groove 110 .

[0060] Or further, Figure 1 As shown, the first side plate 101 and the third side plate 103 are provided with mutually communicating grease receiving ports 111 , and the grease receiving ports 111 are communicated with the grease receiving groove 110 .

[0061] It should be noted that no matter which side panel the grease receiving port 111 is provided on, to facilitate receiving grease, when the profile structure 10 is installed at the bottom opening 211, at least a portion of the grease receiving port 111 may be directed upward, or the grease receiving port 111 may be directed toward the center of the bottom opening 211. Any arrangement is acceptable as long as the grease can flow into the grease receiving groove 110 along the grease receiving port 111.

[0062] As an example, Figure 1 and Figure 3 As shown, a portion of the grease receiving opening 111 is provided on the third side panel 103, and another portion is provided on the first side panel 101, and the two portions of the grease receiving opening 111 are connected to each other. Therefore, when the profile structure 10 is installed at the bottom opening 211, the second side panel 102 can be aligned with the inner side wall of the bottom opening 211, the first side panel 101 can be positioned on the side of the second side panel 102 close to the center of the bottom opening 211, and the third side panel 103 and the fourth side panel 104 can be spaced apart in the height direction of the tower 50. Thus, after the profile structure 10 has been arranged around the bottom opening 211, its cross section is as follows: Figure 1 As shown, the four side panels form a grease receiving groove 110, and the grease receiving port 111 on the third side panel 103 faces upward, conveniently catching dripping grease. The top of the first side panel 101 has a notch, which forms part of the grease receiving port 111. This notch increases the opening area of ​​the grease receiving port 111 and facilitates the mating of the sealing strip, allowing the sealing strip to extend through the notch and into the grease receiving port 111, thus reducing space usage. Furthermore, the sealing strip does not protrude excessively from the grease receiving groove 110, thereby facilitating the smooth flow of grease into the grease receiving groove 110 along the sealing strip.

[0063] As an example, the first side panel 101 does not have a grease connection port, and the grease connection port 111 is only provided on the third side panel 103. In this case, when installing the profile structure 10, the second side panel 102 can be aligned with the inner sidewall of the bottom opening 211, with the first side panel 101 positioned on the side of the second side panel 102 closer to the center of the bottom opening 211. The third side panel 103 and the fourth side panel 104 are spaced apart in the height direction of the tower 50, so that the third side panel 103 is at the top of the profile structure 10 and the grease connection port 111 faces upward, facilitating grease connection. In this case, if a sealing strip is provided, a portion of the sealing strip can extend radially inward from the top of the first side panel 101 toward the bottom opening 211.

[0064] As an example, the third side panel 103 does not have a grease receiving port, and the grease receiving port 111 is only provided on the first side panel 101. In this case, the second side panel 102 can be fitted with the inner wall of the bottom opening 211, and the first side panel 101 can be located on the side of the second side panel 102 close to the center of the bottom opening 211. The third side panel 103 and the fourth side panel 104 can be spaced apart in the height direction of the tower 50, so that the side of the grease receiving groove 110 has a grease receiving port 111. At this time, the sealing strip 30 can be cooperated with to receive grease, so that a part of the sealing strip 30 extends out of the grease receiving groove 110 through the grease receiving port 111. In this way, the grease receiving groove 110 mainly collects the grease that drips onto the sealing strip 30 and flows into the grease receiving groove 110 along the sealing strip 30, and can also play a certain role in preventing grease from leaking out of the cabin cover body 20.

[0065] Further, if Figures 1 to 3 As shown, the profile structure 10 further includes a first reinforcing plate 105. Its two side surfaces face the first side plate 101 and the second side plate 102, respectively. Its two ends are connected to the third side plate 103 and the fourth side plate 104, respectively, to separate the grease receiving groove 110 into a first cavity 120 and a second cavity 130 in the first direction. The grease receiving port 111 communicates with the first cavity 120, and the mounting portion 140 is disposed within the second cavity 130. The design of the first reinforcing plate 105 enhances the structural strength of the profile structure 10, thereby increasing the structural strength of the bottom opening 211 when the profile structure 10 is installed at the bottom opening 211. Furthermore, by using the first reinforcing plate 105 to separate the interior space of the grease receiving groove 110, the first cavity 120 receives grease, while the mounting portion 140 is disposed within the second cavity 130. This separation prevents grease from affecting the mounting portion 140, thereby affecting the stability of the connection between the mounting portion 140 and the bottom opening 211. Furthermore, it is also possible to prevent grease from spreading onto the nacelle cover body 20 through the mounting portion 140 , thereby preventing the nacelle cover body 20 from being contaminated.

[0066] Further, if Figures 1 to 3As shown, the profile structure 10 further includes a second reinforcing plate 106. The second reinforcing plate 106 and the first reinforcing plate 105 are arranged crosswise. The two side plates of the second reinforcing plate 106 face the third side plate 103 and the fourth side plate 104 respectively, and the two ends of the second reinforcing plate 106 are respectively connected to the first side plate 101 and the second side plate 102, so as to divide the first cavity 120 into a first sub-cavity 121 and a second sub-cavity 122 in the second direction, and divide the second cavity 130 into a third sub-cavity 131 and a fourth sub-cavity 132 in the second direction. The grease inlet 111 is communicated with the first sub-cavity 121, and the mounting part 140 is arranged in the third sub-cavity 131 and / or the fourth sub-cavity 132. The design of the second reinforcing plate 106 makes the internal cavities of the profile structure 10 roughly distributed in a cross shape, and the profile structure 10 has high structural strength and is not easily bent and deformed.

[0067] Of course, the second reinforcing plate 106 may not be connected to the first side plate 101, but the two ends of the second reinforcing plate 106 are respectively connected to the first reinforcing plate 105 and the second side plate 102. In this way, the first cavity 120 is not divided by the first reinforcing plate 105, and the second cavity 130 is divided into two sub-cavities by the second reinforcing plate 106. The first cavity 120 can have a larger space to accommodate grease, and the profile structure 10 also has a certain structural strength.

[0068] Or, the profile structure 10 includes a second reinforcing plate 106 with two ends respectively connected to the first side plate 101 and the second side plate 102, which divides the space in the grease receiving groove 110 into upper and lower parts. It also includes a first reinforcing plate 105, and the two ends of the first reinforcing plate 105 are respectively connected to the third side plate 103 and the second reinforcing plate 106, which divides the space above the second reinforcing plate 106 into two parts again. It can also make the profile structure 10 have a certain structural strength.

[0069] The specific structure of the profile structure 10 can be various as long as it can form a grease receiving groove 110 for accommodating grease, and will not be elaborated in detail here.

[0070] In addition, in order to facilitate the profile structure 10 to better receive grease, further, in some embodiments, as Figure 1 and Figure 3 shown, a connecting part 150 is further arranged on the profile structure 10. The connecting part 150 is used to connect the sealing strip 30, so as to facilitate the sealing strip 30 to receive grease and guide the grease into the grease receiving groove 110.

[0071] The sealing strip 30 is primarily used to seal the gap between the nacelle cover and the top of the tower 50. It serves as a transitional seal between the two and is a dynamic seal. It offsets assembly errors between the nacelle cover and the tower 50 while also providing a protective seal. The combination of the sealing strip 30 and the grease receiving groove 110 not only provides sealing, but also allows the strip to collect grease, increasing the grease receiving area. The strip 30 also facilitates the flow of grease into the grease receiving groove 110, reducing the chance of grease leaking out of the nacelle cover. This allows for both yaw sealing and grease receiving for the yaw system.

[0072] The sealing strip 30 can be distributed in an annular shape. During installation, the profile structure 10 is first installed at the bottom opening 211 and distributed along the circumference of the bottom opening 211. Then, the annular sealing strip 30 is installed on the profile structure 10. This achieves a dynamic seal between the tower 50 and the nacelle cover and collects grease around the tower 50.

[0073] Regarding the setting position of the connection portion 150, further, as Figure 1 and Figure 3 As shown, the connecting portion 150 is arranged inside the grease receiving groove 110, so that the sealing strip 30 will extend into the grease receiving groove 110 and connect with the connecting portion 150, so that the grease can drip onto the sealing strip 30 and flow into the grease receiving groove 110 along the sealing strip 30.

[0074] As an example, Figure 1 and Figure 3 As shown, the connecting portion 150 is disposed on the inner wall of the first side panel 101, specifically on the side wall of the grease receiving groove 110 near the center of the bottom opening 211. This allows the sealing strip 30 to extend into the grease receiving groove 110 and connect with the connecting portion 150, leaving sufficient space between the sealing strip 30 and the second side panel 102 to accommodate grease. Furthermore, this facilitates maintenance personnel to regularly clean the grease in the grease receiving groove 110 without interference from the sealing strip 30.

[0075] In addition, each profile structure 10 can be provided with one or more connecting parts 150 along its own extension direction. In this way, when connecting the annular sealing strip 30, the sealing strip 30 can be connected to the profile structure 10 at multiple points in the circumferential direction, thereby improving the installation stability of the sealing strip 30.

[0076] As an example, the connecting portion 150 is provided on the bottom wall of the grease receiving groove 110 .

[0077] Regarding the specific structure of the connecting portion 150, further, in some embodiments, as Figure 1 and Figure 3As shown, the connecting portion 150 includes a hollow second convex structure 151, and the protruding end of the second convex structure 151 has a second insertion hole 152. The second convex structure 151 is used for the second connecting member 40 to be inserted and extended through the second insertion hole 152 so that the second connecting member 40 can be inserted into the sealing strip 30.

[0078] refer to Figure 3 The second connecting member 40 can be a T-shaped bolt. The head of the T-shaped bolt is inserted into the second convex structure 151 through the second insertion hole 152 and then rotated to a set angle. At this time, the head of the T-shaped bolt will not easily fall out of the second insertion hole 152. After the main body of the T-shaped bolt is passed through the sealing strip 30, a nut is provided on the other side of the sealing strip 30 and screwed onto the T-shaped bolt to complete the installation of the sealing strip 30. The installation of the sealing strip 30 is stable, and after long-term use, the nut can be unscrewed to remove and replace the sealing strip 30.

[0079] Of course, in other embodiments, the connecting portion 150 may also be a threaded column, and the second connecting member 40 may be a common hexagonal bolt, which directly passes through the sealing strip 30 and is inserted into the threaded column to achieve the installation of the sealing strip 30 .

[0080] Regarding the specific structure of the mounting portion 140, further, in some embodiments, such as Figure 1 and Figure 3 As shown, the mounting portion 140 includes a hollow first convex structure 141, which is arranged on the inner wall of the second side panel 102, and a first plug hole 142 is provided on the second side panel 102, and the first plug hole 142 is connected to the internal cavity of the first convex structure 141. The first convex structure 141 is used for inserting a first connecting member (not shown in the figure) and extending it through the first plug hole 142, so that the first connecting member is connected to the cabin cover body 20.

[0081] refer to Figure 3 The first connecting member is a T-shaped bolt. The head of the T-shaped bolt is inserted into the first convex structure 141 through the first insertion hole 142 and then rotated to a set angle. At this time, the head of the T-shaped bolt will not easily fall out of the first insertion hole 142. The nacelle cover body 20 includes a connecting beam 212 connected to the bottom wall. One end of the connecting beam 212 extends to the bottom opening 211. The connecting beam 212 and the outer wall of the profile structure 10 form a certain angle. An angle connector is placed at the angle between the connecting beam 212 and the profile structure 10 to Figure 3Taking the position of the middle connecting beam 212 as an example, the corner connector can be placed flat on the inner side of the connecting beam 212 (inward on the paper) and fit with the side wall of the profile structure 10 away from the tower 50, so that one end of the corner connector is connected to the main body of the T-bolt, and the nut is screwed on the part of the T-bolt extending out of the corner connector, so that the other end of the corner connector fits with the side of the connecting beam 212 and is connected by bolts. With the help of the corner connector, the profile structure 10 and the nacelle cover body 20 are connected firmly.

[0082] Specifically, a plurality of connecting beams 212 can be provided on the bottom wall of the cabin cover body 20, and the plurality of connecting beams 212 are distributed at intervals in the circumferential direction of the bottom opening 211, so that the profile structure 10 is connected to the plurality of connecting beams 212, thereby realizing the connection between the profile structure 10 and the cabin cover body 20 at multiple points in the circumferential direction, and the connection is firm.

[0083] Of course, in other embodiments, the mounting portion 140 may also be a threaded column, and the bolt directly passes through one end of the L-shaped rib and is inserted into the threaded column, and the other end of the L-shaped rib is then connected to the connecting beam 212 by a bolt to achieve the installation of the profile structure 10.

[0084] There are many ways to install the profile structure 10 and the nacelle cover body 20, which are not limited to the above examples.

[0085] like Figure 2 and Figure 3 As shown, the second embodiment of the present invention provides a nacelle cover for being installed at the top of the tower 50 of a wind turbine generator set, the nacelle cover comprising: a nacelle cover body 20, a bottom opening 211 being provided on the bottom wall of the nacelle cover body 20; a profile structure 10 as in any one of the above embodiments, the profile structure 10 being circumferentially distributed along the bottom opening 211, and the cavity enclosed by the profile structure 10 being used for the top of the tower 50 to extend into; a sealing strip 30, which is annular, and the first end of the sealing strip 30 extends into the grease receiving groove 110, and the second end of the sealing strip 30 extends radially inward from above the grease receiving port 111 of the grease receiving groove 110.

[0086] The nacelle cover provided by this embodiment of the utility model features a profile structure 10 distributed circumferentially along the bottom opening 211, facilitating grease collection around the tower 50. The first end of the sealing strip 30 extends into the grease collection groove 110 of the profile structure 10, while the second end radially extends inwardly out of the groove 110. This extended portion of the sealing strip 30 increases the grease collection area, reducing the likelihood of grease leaking out of the nacelle cover. Furthermore, the sealing strip 30 facilitates the flow of grease into the groove 110, effectively collecting the grease.

[0087] In addition, the sealing strip 30 can serve as a transition sealing structure between the nacelle cover and the tower 50, which is a dynamic sealing structure. It is also beneficial to offset the assembly error between the nacelle cover and the tower 50, and play a sealing and protective role.

[0088] Furthermore, in some embodiments, the second end of the sealing strip 30 extends upwardly and obliquely toward the side wall of the tower 50, so that grease dripping on the sealing strip 30 can be guided into the grease collecting groove 110, thereby achieving a good grease guiding effect.

[0089] Furthermore, the second end of the sealing strip 30 is used to seal against the side wall of the tower 50. This has a good sealing effect and can also prevent grease from flowing out from the gap between the tower 50 and the sealing strip 30.

[0090] As an example, Figure 3 As shown, the sealing strip 30 includes a first sheet 310 and a second sheet 320 extending circumferentially. The first sheet 310 and the second sheet 320 are interconnected. The sealing strip 30 has an L-shaped cross-section. The first sheet 310 is vertically positioned in the grease receiving groove 110, while the second sheet 320 extends laterally from the upper end of the first sheet 310 toward the tower 50 and is inclined upward at a predetermined angle. The sealing strip 30 has a simple structure and facilitates the introduction of grease into the grease receiving groove 110.

[0091] Of course, the structure of the sealing strip 30 is not limited thereto. For example, the cross section of the sealing strip 30 may also be in a downward-opening U-shape, or a horizontally placed S-shape, etc.

[0092] The third embodiment of the present invention provides a wind turbine generator set, which includes a tower 50, a yaw system and a nacelle cover installed at the upper end of the tower 50. The nacelle cover is a nacelle cover as described in any of the above embodiments, and the grease receiving groove 110 is used to receive grease dripping from the yaw system.

[0093] The wind turbine generator set provided by the embodiment of the present invention has the nacelle cover 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.

[0094] Furthermore, in some embodiments, the wind turbine generator set further includes a yaw system, a portion of the yaw system is connected to the top of the tower 50 , and another portion is connected to the nacelle cover.

[0095] The profile structure 10 and the cabin cover provided by the embodiment of the present invention fully utilize the advantages of the metal profile. The mounting end of the sealing strip is embedded in the interior of the profile structure 10. While performing a yaw dynamic seal, it is combined with the profile structure 10 to form a yaw grease collection function. Grease dripping from the yaw structure flows from the sealing strip into the cavity of the profile structure 10 (grease collection groove 110) and is collected in a centralized manner, facilitating the regular recovery of the yaw grease and preventing the grease from flowing to the outside of the cabin. The profile structure 10 and the sealing strip cooperate with each other, taking into account both the yaw sealing and grease collection functions, fully utilizing the structural advantages of the metal profile and eliminating the additional cost of setting up a separate yaw grease collection tray.

[0096] 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 profile structure, characterized in that: The profile structure (10) is used to be mounted on a nacelle cover body (20) of a wind turbine generator set, wherein a bottom opening (211) is provided on the bottom wall of the nacelle cover body (20), wherein: The profile structure (10) comprises a grease receiving groove (110) and a mounting portion (140), wherein the mounting portion (140) is used to be connected to the bottom opening (211) so that the grease receiving groove (110) receives grease on the inner side of the bottom opening (211).

2. The profile structure according to claim 1, characterized in that: The profile structure (10) comprises a first side plate (101) and a second side plate (102) spaced apart in a first direction, and a third side plate (103) and a fourth side plate (104) spaced apart in a second direction, wherein the first side plate (101), the second side plate (102), the third side plate (103) and the fourth side plate (104) enclose the grease receiving groove (110); Wherein, the first side plate (101) is provided with a grease receiving port (111) connected to the grease receiving groove (110), or the third side plate (103) is provided with a grease receiving port (111) connected to the grease receiving groove (110), or the first side plate (101) and the third side plate (103) are provided with grease receiving ports (111) connected to each other and the grease receiving ports (111) are connected to the grease receiving groove (110).

3. The profile structure according to claim 2, characterized in that: The profile structure (10) further includes a first reinforcing plate (105), the two side plate surfaces of the first reinforcing plate (105) respectively facing the first side plate (101) and the second side plate (102), and the two ends of the first reinforcing plate (105) are respectively connected to the third side plate (103) and the fourth side plate (104) to separate the grease receiving groove (110) into a first cavity (120) and a second cavity (130) in a first direction, the grease receiving port (111) is connected to the first cavity (120), and the mounting portion (140) is arranged in the second cavity (130).

4. The profile structure according to claim 3, characterized in that: The profile structure (10) further includes a second reinforcing plate (106), the second reinforcing plate (106) and the first reinforcing plate (105) are arranged crosswise, the two side plate surfaces of the second reinforcing plate (106) respectively face the third side plate (103) and the fourth side plate (104), and the two ends of the second reinforcing plate (106) are respectively connected to the first side plate (101) and the second side plate (102), so as to separate the first cavity (120) into a first sub-cavity (121) and a second sub-cavity (122) in the second direction, and to separate the second cavity (130) into a third sub-cavity (131) and a fourth sub-cavity (132) in the second direction, the grease connection port (111) is connected to the first sub-cavity (121), and the mounting portion (140) is arranged in the third sub-cavity (131).

5. The profile structure according to any one of claims 2 to 4, characterized in that A connecting portion (150) is provided in the grease receiving groove (110), and the connecting portion (150) is used to connect a sealing strip (30) extending into the grease receiving groove (110) through the grease receiving opening (111), so that grease flows into the grease receiving groove (110) along the sealing strip (30).

6. The profile structure according to claim 5, characterized in that: The connecting portion (150) is arranged on the inner wall of the first side plate (101).

7. The profile structure according to claim 1, characterized in that: The profile structure (10) is an aluminum alloy profile structure.

8. A nacelle cover for installation on the top of a tower (50) of a wind turbine generator set, characterized in that: The nacelle cover comprises: A nacelle cover body (20), wherein a bottom opening (211) is provided on a bottom wall of the nacelle cover body (20); The profile structure (10) according to any one of claims 1 to 7, wherein the profile structure (10) is distributed circumferentially along the bottom opening (211), and the cavity enclosed by the profile structure (10) is used for the top of the tower (50) to extend into; The sealing strip (30) is annular, and the first end of the sealing strip (30) extends into the grease receiving groove (110), and the second end of the sealing strip (30) extends radially inward from above the grease receiving port (111) of the grease receiving groove (110).

9. The nacelle cover according to claim 8, characterized in that The second end of the sealing strip (30) extends obliquely upward toward the side wall of the tower (50), so that grease dripping on the sealing strip (30) can be drained into the grease receiving groove (110); and / or The second end of the sealing strip (30) is used for sealing contact with the side wall of the tower (50).

10. The nacelle cover according to claim 9, characterized in that The sealing strip (30) includes a first sheet (310) and a second sheet (320) extending along the circumferential direction, the first sheet (310) and the second sheet (320) being connected to each other, and the cross section of the sealing strip (30) is L-shaped, the first sheet (310) being vertically arranged in the grease receiving groove (110), and the second sheet (320) extending laterally from the upper end of the first sheet (310) toward the tower (50) and tilted upward at a certain angle.

11. The nacelle cover according to claim 8, wherein: The nacelle cover body (20) is an aluminum alloy nacelle cover body; and / or The nacelle cover body (20) includes a connecting beam (212), the connecting beam (212) is connected to the bottom wall of the nacelle cover body (20), and the mounting portion (140) is connected to the connecting beam (212).

12. A wind turbine generator set comprising a tower (50), a yaw system and a nacelle mounted on an upper end of the tower (50), characterized in that: The nacelle cover is the nacelle cover according to any one of claims 8 to 11, and the grease collecting groove (110) is used to receive grease dripping from the yaw system.

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