Filter mounting structure convenient to disassemble

Abstract

The utility model provides a filter mounting structure convenient to disassemble, which comprises a cabin cover, a grating, a filter body, a filter cover plate and a fixing component, and the grating is connected to the bottom of the cabin cover and supports the filter body; the filter cover plate is connected to the cabin cover, an opening is formed in one side of the filter cover plate, the filter body is installed in the space between the filter cover plate and the grating from the opening along the two sides of the filter cover plate, guiding is provided for installation of the filter body through the two sides of the filter cover plate, and the filter body is limited through the filter cover plate; the fixing assembly is used for fixing the end, located at the opening, of the filter body, and stability of overall connection is guaranteed. According to the filter mounting structure, stable connection of the filter is guaranteed, meanwhile, mounting and dismounting are more convenient, the filter body can be mounted in or pulled out for replacement only by mounting or dismounting the fixing assembly, the operation of replacing the filter is simplified, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of wind power generation, and in particular relates to a filter installation structure which is easy to disassemble. Background Art

[0002] With the advancement of wind turbine technology, demands for functionality and efficiency in wind turbine nacelles and their associated filter components have increased. Existing wind turbine nacelle filters are typically secured with bolts around a peripheral flange. When the filter needs replacing, all bolts must be removed, a cumbersome and inefficient process. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a filter installation structure that is easy to disassemble. When the filter needs to be replaced, it is only necessary to remove the filter pressure plate, then pull out the filter for replacement, and finally install the replaced filter and install the pressure plate. This eliminates the tedious bolt disassembly and assembly process, facilitates the replacement of the filter, and effectively improves work efficiency.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a filter installation structure that is easy to disassemble, comprising:

[0005] nacelle cover;

[0006] a grille connected to the nacelle;

[0007] a filter body, mounted on a side of the grille away from the nacelle cover;

[0008] A filter cover is connected to the nacelle cover, and the filter cover comprises:

[0009] an outer frame connected to the nacelle cover, with a hollow structure formed in the middle thereof, the filter body being located in the hollow structure and above the grille;

[0010] a filter fixing frame connected to the outer frame, semi-circumferentially arranged around the hollow structure, with an opening formed on one side thereof, the filter body being installed into the hollow structure through the opening, the filter fixing frame covering the edge of the filter body and fixing the filter body;

[0011] The fixing assembly is arranged on a side of the outer frame away from the filter fixing frame and pressed against the top surface of the filter body.

[0012] According to an embodiment provided by the present invention, a fixing block is provided at the bottom of the grille, a grille connection hole is opened on the fixing block, and a grille fixing bolt is connected to the grille connection hole to fix the grille to the nacelle cover.

[0013] According to an embodiment provided by the present invention, the bottom surface of the outer frame is connected to the nacelle cover, and the outer frame is formed with a raised structure in the height direction. The raised structure is arranged along the circumference of the outer frame and encloses to form the hollow structure.

[0014] According to an embodiment of the present invention, the filter fixing frame is connected to an end of the raised structure away from the nacelle cover, and is in contact with the top surface and side surfaces of the filter body to limit the filter body.

[0015] According to an embodiment of the present invention, the filter fixing frame includes:

[0016] a first fixing portion, which is provided at one end of the hollow structure and connected to an end of the raised structure away from the nacelle cover;

[0017] a second fixing portion, the second fixing portion being arranged opposite to each other on both sides of the hollow structure and connected to an end of the raised structure away from the nacelle cover and the first fixing portion;

[0018] The first fixing portion and the second fixing portion are in contact with the top surface and each of the side surfaces of the filter body respectively to limit the position of the filter body.

[0019] According to an embodiment provided by the present invention, in the length direction of the second fixing portion, the length of the second fixing portion is smaller than the length of the filter body.

[0020] According to an embodiment of the present invention, the fixing assembly includes:

[0021] A connecting portion connected to the outer frame;

[0022] A limiting portion is connected to the connecting portion, and the limiting portion presses against the top surface of the filter body to limit the filter body.

[0023] According to an embodiment of the present invention, a cover plate connecting hole is formed on the outer frame, and a cover plate fixing bolt connects the filter cover to the nacelle cover through the cover plate connecting hole, and a first nut is installed on a side of the outer frame away from the nacelle cover to fix the outer frame to the nacelle cover;

[0024] The connecting portion is arranged on a side of the first nut away from the outer frame and is connected to the cover fixing bolt. The second nut is arranged on a side of the connecting portion away from the first nut and is connected to the cover fixing bolt to fix the limiting portion to the outer frame.

[0025] According to an embodiment provided by the present invention, two groups of the fixing components are symmetrically arranged on both sides of an end of the filter body away from the filter fixing frame.

[0026] According to an embodiment provided by the present invention, a fine-mesh steel wire mesh is further included, which covers the surface of the grille to filter large particles of dust.

[0027] In the filter mounting structure of the present invention, the filter body is supported by the grille, the filter cover can provide guidance for the filter body and limit the size in the height direction at the same time, the filter fixing frame is used to limit the filter body, and an opening is formed on one side of the filter fixing frame to facilitate the replacement of the filter, and the end of the filter body located on the opening side is fixed by the fixing component to ensure the stability of the connection, the overall structure is simple, and the fixing component is easy to install and disassemble, which effectively saves disassembly time and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is an overall structural diagram of the filter installation structure in one embodiment provided by the utility model;

[0030] Figure 2 A partial structural diagram of a filter installation structure in an embodiment of the present invention;

[0031] Figure 3 A partial cross-sectional view of a filter installation structure in an embodiment of the present invention;

[0032] Figure 4 A partial front view of a filter installation structure in an embodiment of the present invention;

[0033] Figure 5 This is a partial cross-sectional view of the connection between the fixing assembly and the filter pressure plate in one embodiment provided by the utility model.

[0034] Figure Number:

[0035] 100, cabin cover; 200, grille; 300, filter body; 400, filter cover; 500, fixing assembly; 600, fine mesh steel wire mesh;

[0036] 210, fixing block; 220, grille fixing bolt;

[0037] 410, outer frame; 420, filter fixing frame;

[0038] 411, raised structure; 412, cover plate fixing bolt; 413, first nut; 414, first step;

[0039] 421, first fixing portion; 422, second fixing portion; 423, first limiting plate; 424, second limiting plate;

[0040] 510 , connecting portion; 520 , limiting portion; 530 , washer; 540 , second nut. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0042] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0043] Most existing wind turbine nacelle filters are fixed with bolts on a circumferential flange. When replacing the filter, all the bolts need to be removed, which makes the disassembly and assembly process very cumbersome and reduces work efficiency.

[0044] See also Figures 1 to 5The utility model proposes a filter installation structure that is easy to disassemble, including a cabin cover 100, a grille 200, a filter body 300, a filter cover 400 and a fixing assembly 500. The grille 200 is connected to the bottom of the cabin cover 100 to support the filter body 300; the filter cover 400 is connected to the cabin cover 100, and an opening is formed on one side of the filter cover 400. The filter body 300 is installed from the opening along both sides of the filter cover 400 to the space between the filter cover 400 and the grille 200. The installation of the filter body 300 is guided by the two sides of the filter cover 400, and the filter cover 400 is used to limit the filter body 300; the fixing assembly 500 is used to fix one end of the filter body 300 located at the opening to ensure the stability of the overall connection. This filter installation structure ensures the stability of the filter connection while making installation and disassembly more convenient. Only the fixing component 500 needs to be installed or disassembled, and the filter body 300 can be pulled out or installed for replacement, which simplifies the operation of replacing the filter and effectively improves work efficiency.

[0045] See also Figures 1 to 5 According to one embodiment of the present invention, a grille 200 is connected to the nacelle cover 100. A fixing block 210 is provided at the bottom of the grille 200. The fixing block 210 has grille connection holes. Grille fixing bolts 220 engage the grille connection holes to secure the grille 200 to the nacelle cover 100. The grille 200 ensures airflow without affecting the filter's function. It also provides reliable support for the filter body 300, ensuring overall structural stability. The surface of the grille 200 can also be covered with a fine-mesh steel mesh 600 to filter large dust particles. The fine-mesh steel mesh 600 is located within the hollow structure, making it easy to remove and replace.

[0046] See also Figures 1 to 5 According to one embodiment of the present invention, the grille 200 may be, for example, an iron grille 200 to ensure support strength for the filter body 300. The fixing blocks 210 may be welded to the four corners of the iron grille 200. A grille connection hole is provided at a position corresponding to each fixing block 210 and the bottom of the nacelle cover 100. The grille fixing bolts 220 pass through the grille connection holes to connect the bottom of the nacelle cover 100 to the grille 200. The bolts are then tightened against the surface of the grille 200 via nuts to secure the grille 200, ensuring a stable and reliable connection of the entire grille 200. In other embodiments, the number and position of the fixing blocks 210 may also be varied. For example, the fixing blocks 210 may be provided at opposite corners of the grille 200 to secure the grille 200, or multiple fixing blocks 210 may be provided on each side of the grille 200 to strengthen the securement.

[0047] See also Figures 1 to 5According to an embodiment of the present invention, the filter cover 400 is connected to the engine cover 100, which includes an outer frame 410 and a filter fixing frame 420, wherein the outer frame 410 is connected to the engine cover 100 to fix the filter cover 400 to the bottom of the engine cover 100, and a hollow structure is formed in the middle of the outer frame 410. The filter body 300 is located in the hollow structure and above the grille 200, which can achieve circumferential limitation and height support; the filter fixing frame 420 is connected to the outer frame 410, and is arranged semi-surroundingly around the circumference of the hollow structure. An opening is formed on one side of the filter body 300 to facilitate the installation of the filter body 300 from the opening into the hollow structure, and the filter fixing frame 420 covers the edge of the filter body 300 and fixes the filter body 300. The filter fixing frame 420, the outer frame 410 and the grille 200 are used together to achieve the limitation and support of the filter in multiple directions. The filter body 300 is directly installed in the space formed by them and then assisted in limiting by the fixing component 500 to ensure a stable connection without the need to fix the filter body 300 through multiple bolt connections; when the filter cover 400 is fixed to the grille 200, when replacing the filter body 300, only a small amount of the fixing component 500 needs to be simply disassembled, which ensures that the installation structure is stable and reliable while effectively saving the operation time when replacing the filter body 300, thereby improving work efficiency.

[0048] See also Figures 1 to 5 According to an embodiment provided by the present invention, the filter cover 400 is an integral frame structure with a hollow structure. The outer frame 410 is located at the bottom of the filter cover 400 to fix it to the bottom of the engine cover 100. The filter fixing frame 420 is located above the outer frame 410. The filter fixing frame 420 is connected to the three side surfaces and the top surface of the filter body 300 to achieve positioning in three circumferential directions and in the height direction. The other side of the filter body 300 is then limited by the fixing assembly 500, so that the filter body 300 can be completely limited in all directions, thereby ensuring the stable installation of the filter body 300.

[0049] See also Figures 1 to 5According to an embodiment of the present invention, the bottom surface of the outer frame 410 is connected to the nacelle cover 100, and a raised structure 411 is formed on it in the height direction. The raised structure 411 is arranged along the circumference of the outer frame 410 and enclosed to form a hollow structure to install the filter body 300 and limit its circumferential position; a plurality of cover plate connecting holes are opened on the outer frame 410, and the cover plate fixing bolts 412 connect the filter cover 400 to the nacelle cover 100 through the cover plate connecting holes. The first nut 413 is installed on the side of the outer frame 410 away from the nacelle cover 100 to fix the outer frame 410 to the nacelle cover 100, thereby fixing the filter cover 400 to the bottom surface of the nacelle cover 100, and the fixing assembly 500 is connected to the outer frame 410 through the cover plate fixing bolts 412, and is connected to the top surface of the filter body 300 to achieve limitation.

[0050] Specifically, see Figures 1 to 5 The outer frame 410 is a square structure with multiple cover plate connection holes evenly distributed along each side to ensure a secure connection between the filter cover 400 and the nacelle cover 100. The outer frame 410 is formed with a raised structure 411 in the height direction. The raised structure 411 is in the form of a baffle, and together they form a hollow structure. The grille 200 and the filter body 300 are located in the hollow structure. The upper end surface of the raised structure 411 is higher than the height of the top surface of the grille 200, forming a groove between the raised structure 411 and the top surface of the grille 200, thereby enabling the filter body 300 to be engaged in the groove. The groove has a certain height to achieve circumferential positioning of the filter body 300 without significantly hindering its installation. It can be understood that the circumferential shape and size of the groove match the shape and size of the filter body 300, so that the filter body 300 fits into the groove after installation without shaking, ensuring stable installation.

[0051] See also Figures 1 to 5 According to an embodiment of the present invention, a first step 414 is formed between the raised structure 411 and the bottom surface of the outer frame 410, which is connected to the top and side surfaces of the grille 200, and rounded corners are provided at the connection between the bottom surface of the filter cover 400 and the first step 414 and between the first step 414 and the raised structure 411 to enhance the structural strength of the filter cover 400.

[0052] See also Figures 1 to 5According to an embodiment of the present invention, the filter fixing frame 420 is connected to the end of the raised structure 411 away from the nacelle cover 100 and contacts and connects with the top and side surfaces of the filter body 300 to limit the position of the filter body 300. The filter fixing frame 420 includes a first fixing portion 421 and a second fixing portion 422. The first fixing portion 421 is arranged on one side of the hollow structure and connected to the end of the raised structure 411 away from the nacelle cover 100; the second fixing portion 422 is arranged on both sides of the hollow structure and connected to the end of the raised structure 411 away from the nacelle cover 100 and the first fixing portion 421. The first fixing portion 421 and the second fixing portion 422 respectively contact the top and side surfaces of the filter body 300 to limit the position of the filter body 300.

[0053] See also Figures 1 to 5 According to one embodiment of the present invention, the filter fixing frame 420 is a unitary U-shaped frame structure having an opening on one side. The first fixing portion 421 is a frame on the filter fixing frame 420 opposite the U-shaped opening, and the second fixing portions 422 are frames on both sides of the U-shaped frame. When the filter body 300 is installed, one end of the filter body 300 is positioned at the opening of the U-shaped frame. The filter body 300 contacts the second fixing portions 422 on both sides of the U-shaped frame to achieve position restraint, and can slide along the second fixing portions 422 into the space between the U-shaped frame and the grille 200. After installation, the end of the filter body 300 away from the frame opening contacts the raised structure 411 of the outer frame 410 and the first fixing portion 421 to achieve position restraint. The other end is then secured by the fixing assembly 500 to fully secure the filter body 300. The U-shaped frame structure ensures a stable connection of the filter body 300 while facilitating installation and removal, thereby improving work efficiency when replacing filters.

[0054] See also Figures 1 to 5 The filter housing 420 is a block diagram of a filter housing 421. The filter housing 420 is a block diagram of a filter housing 421. The filter housing 420 is a block diagram of a filter housing 421. The filter housing 420 is a block diagram of a filter housing 421. The filter housing 420 is a block diagram of a filter housing 421.

[0055] See also Figures 1 to 5According to an embodiment of the present invention, in the length direction of the second fixing portion 422 , the length of the second fixing portion 422 is smaller than the length of the filter body 300 . When a groove is formed between the raised structure 411 of the outer frame 410 and the grille 200, the filter body 300 is located in the groove, that is, the filter body 300 is in a sunken state after installation, which can prevent it from shaking and enhance the stability of the connection; at this time, if the second fixing portion 422 is equal to the length of the filter body 300, it is difficult to introduce the filter body 300 from the open end during the initial installation due to the obstruction of the raised structure 411 on the outer frame 410. Therefore, in order to facilitate installation, the open end of the filter fixing frame 420 is set in the middle position of the filter body 300, that is, the length of the second fixing portion 422 in the installation direction is less than the length of the filter body 300, thereby leaving some space above the side of the outer frame 410 away from the first fixing portion 421, first place the filter body 300 partly in the hollow structure, and then introduce it from the opening along the second fixing portion 422, reducing the resistance encountered during the installation of the filter body 300 and ensuring that the installation process is simple and convenient.

[0056] See also Figures 1 to 5 According to one embodiment of the present invention, the fixing assembly 500 includes a connecting portion 510 and a limiting portion 520. The connecting portion 510 is connected to the outer frame 410. The limiting portion 520 is connected to the connecting portion 510 and presses against the top surface of the filter body 300 to limit the position of the filter body 300. For example, the fixing assembly 500 is a stepped pressure plate. The limiting portion 520 is located above the stepped structure and presses against the top surface of the filter body 300. The connecting portion 510 is located at the bottom of the stepped structure and is used to connect to the outer frame 410 and press the limiting portion 520 and the filter body 300 together to further limit the position of the filter body 300.

[0057] See also Figures 1 to 5According to an embodiment of the present invention, the connecting portion 510 is disposed on a side of the first nut 413 away from the outer frame 410 and is connected to the cover plate fixing bolt 412. The second nut 540 is disposed on a side of the connecting portion 510 away from the first nut 413 and is connected to the cover plate fixing bolt 412 to fix the limiting portion 520 to the outer frame 410. Specifically, a connecting hole is formed on the connecting portion 510, which is connected to the cover plate fixing bolt 412 through the connecting hole and is placed above the first nut 413. An enlarged washer 530 and a second nut 540 are then installed above the connecting portion 510. By tightening the second nut 540, the filter pressure plate is compressed, thereby ensuring the stability of the filter body 300. The upper and lower sides of the connecting part 510 are fixed by the second nut 540 and the first nut 413 respectively for easy disassembly. When the fixing assembly 500 needs to be disassembled, the cover fixing bolt 412 is fixed with the first nut 413, and the second nut 540 can be loosened and removed to avoid the increase in disassembly difficulty due to the rotation of the bolt axis.

[0058] See also Figures 1 to 5 It can be understood that the filter body 300 is installed in the groove formed by the raised structure 411 of the outer frame 410 and the grille 200. The raised structure 411 and the filter fixing frame 420 limit the filter body 300 in the circumferential and height directions to a certain extent. Since the filter fixing frame 420 has an opening and the length of the second fixing portion 422 in the installation direction is less than the length of the filter body 300, the stability of the connection in the height direction of the side of the filter body 300 away from the second fixing portion 422 is insufficient. The fixing assembly 500 is connected to the top surface of the filter body 300 and pressed to limit it, so as to ensure the stability of the connection of the filter body 300.

[0059] See also Figures 1 to 5 In other embodiments, for example, the raised structure 411 is at the same height as the grille 200, and the length of the second fixing portion 422 in the installation direction is equal to the length of the filter body 300, the filter body 300 is installed in the space between the grille 200 and the filter cover 400, and the filter connection frame and the grille 200 limit the filter body 300 in all directions except the installation direction. At this time, the fixing component 500 is used to limit the side of the filter body 300 away from the first fixing portion 421 to prevent relative sliding, so as to achieve complete limitation. Furthermore, the fixing component 500 can also be connected to the top surface of this side for limitation to ensure the stability of the connection of the filter body 300.

[0060] See also Figures 1 to 5According to an embodiment of the present invention, two sets of fixing assemblies 500 are symmetrically arranged on both sides of the end of the filter body 300 away from the filter fixing frame 420. For example, the filter body 300 can be installed along the long side of the filter cover 400. In this case, the side of the outer frame 410 opposite the first fixing portion 421 is shorter. Three bolt connection holes are evenly arranged on the bottom surface of this side of the outer frame 410. The outer frame 410 can be stably connected to the nacelle 100 using the cover fixing bolts 412 and the first nuts 413 respectively. The two sets of fixing assemblies 500 are respectively connected to the cover fixing bolts 412 on both sides, and the limiting portion 520 is pressed and fixed to the top surface of the filter body 300 using the first nuts 413 and the second nuts 540, thereby achieving a stable connection of the filter body 300. It is understandable that in other embodiments, the installation direction of the filter body 300 may also be different, and the number and position of the fixing components 500 are not limited. They are set according to the size structure of the filter cover 400 and the filter body 300 to ensure a stable connection to the filter body 300.

[0061] See also Figures 1 to 5 During installation, first use the grille fixing bolts 220 to fix the grille 200 to the bottom of the nacelle cover 100 to provide support for the filter, and then attach a layer of fine-mesh stainless steel mesh to the grille 200 to filter large particles of dust; fix the filter cover 400 to the bottom of the nacelle cover 100 around the outer frame 410 using the cover fixing bolts 412, and then partially place the filter body 300 into the hollow structure, with one end placed at the opening of the filter fixing frame 420 and abutting against the second fixing parts 422 on both sides, and then guide the filter body 300 along the second fixing part 422. Until the filter body 300 completely enters the hollow structure and is engaged between the filter cover 400 and the grille 200, the raised structure 411 of the outer frame 410 and the filter fixing frame 420 are used to limit its circumference and top surface. Finally, a limiter is installed on the top surface of the filter body 300 away from the first fixing portion 421. The connector is connected to the cover fixing bolt 412 and placed on the first nut 413. The washer 530 is installed and the second nut 540 is tightened to press the limiter against the top surface of the filter body 300 to ensure the stability and reliability of the overall structure. When the filter body 300 needs to be replaced, only the second nut 540 and the fixing assembly 500 need to be removed to pull out the filter body 300. The new filter body 300 is then installed into the hollow structure and the fixing assembly 500 is installed to secure it.

[0062] To sum up, the filter mounting structure of the present invention utilizes the grille 200 to support the filter body 300, and the filter cover 400 is fixed to the grille 200 to form an installation space. Due to the special structure of the filter cover 400, after the filter body 300 is installed between the filter cover 400 and the grille 200, a stable connection can be achieved by installing the fixing assembly 500. When replacing the filter body 300, only a small amount of the fixing assembly 500 needs to be removed. The operation is simple and convenient, saving disassembly and assembly time and high work efficiency. After the installation is completed, the filter body 300 is completely limited and reliably fixed by the filter cover 400 and the grille 200, and there will be no loosening or shaking. The filter mounting structure is stable and reliable as a whole.

[0063] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

[0064] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A filter installation structure that is easy to disassemble, characterized in that: include: nacelle cover; a grille connected to the nacelle; a filter body, mounted on a side of the grille away from the nacelle cover; A filter cover is connected to the nacelle cover, and the filter cover comprises: an outer frame connected to the nacelle cover, with a hollow structure formed in the middle thereof, the filter body being located in the hollow structure and above the grille; a filter fixing frame connected to the outer frame, semi-circumferentially arranged around the hollow structure, with an opening formed on one side thereof, the filter body being installed into the hollow structure through the opening, the filter fixing frame covering the edge of the filter body and fixing the filter body; The fixing assembly is arranged on a side of the outer frame away from the filter fixing frame and pressed against the top surface of the filter body.

2. The filter installation structure that is easy to disassemble according to claim 1, characterized in that: A fixing block is provided at the bottom of the grille, and a grille connecting hole is opened on the fixing block. A grille fixing bolt is connected with the grille connecting hole to fix the grille to the nacelle cover.

3. The filter installation structure that is easy to disassemble according to claim 1, characterized in that: The bottom surface of the outer frame is connected to the nacelle cover. The outer frame is formed with a convex structure in the height direction. The convex structure is arranged along the circumference of the outer frame and encloses to form the hollow structure.

4. The filter installation structure that is easy to disassemble according to claim 3, characterized in that: The filter fixing frame is connected to one end of the protruding structure away from the nacelle cover, and is in contact with the top surface and the side surface of the filter body to limit the filter body.

5. The filter installation structure that is easy to disassemble according to claim 4, characterized in that: The filter fixing frame includes: a first fixing portion, which is provided at one end of the hollow structure and connected to an end of the raised structure away from the nacelle cover; a second fixing portion, the second fixing portion being arranged opposite to each other on both sides of the hollow structure and connected to an end of the raised structure away from the nacelle cover and the first fixing portion; The first fixing portion and the second fixing portion are in contact with the top surface and each of the side surfaces of the filter body respectively to limit the position of the filter body.

6. The filter installation structure that is easy to disassemble according to claim 5, characterized in that: In a length direction of the second fixing portion, a length of the second fixing portion is smaller than a length of the filter body.

7. The filter installation structure that is easy to disassemble according to claim 1, characterized in that: The fixing assembly includes: A connecting portion connected to the outer frame; A limiting portion is connected to the connecting portion, and the limiting portion presses against the top surface of the filter body to limit the filter body.

8. The filter installation structure that is easy to disassemble according to claim 7, characterized in that: The outer frame is provided with a cover plate connecting hole, through which a cover plate fixing bolt connects the filter cover to the nacelle cover, and a first nut is installed on a side of the outer frame away from the nacelle cover to fix the outer frame to the nacelle cover; The connecting portion is arranged on a side of the first nut away from the outer frame and is connected to the cover fixing bolt. The second nut is arranged on a side of the connecting portion away from the first nut and is connected to the cover fixing bolt to fix the limiting portion to the outer frame.

9. The filter installation structure that is easy to disassemble according to claim 7, characterized in that: The two groups of fixing components are symmetrically arranged on both sides of an end of the filter body away from the filter fixing frame.

10. The filter installation structure that is easy to disassemble according to claim 1, characterized in that: It also includes a fine-mesh steel wire mesh, which covers the surface of the grille to filter large particles of dust.

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