A filter screen mounting structure for a wind power converter cabinet

Abstract

The utility model discloses a kind of wind power converter cabinet filter screen mounting structures, including filter screen frame, the filter screen frame central formation is formed by several ventilation orifice groups ventilation hole area, form outside through hole on two opposite perimeters of ventilation hole area;The rim of the inside of filter screen frame is formed around flanging, and the flanging of four quarters forms surrounding structure, and filter screen is placed in surrounding structure;Two opposite sides of flanging extend to the central formation of filter screen frame and form connecting edge, and form inside through hole on connecting edge, and the position of inside through hole and outside through hole corresponds, and filter screen mounting structure is fixed in the outside of cabinet door by mounting screw through inside through hole and outside through hole.This utility model combines function, simplifies structure and installation mode, realizes the purpose of filter screen structure piece without opening cabinet door and disassembling filter installation, reduces maintenance workload, improves work efficiency and security.

Description

Technical Field

[0001] This utility model relates to the field of filter installation technology, and in particular to a filter installation structure for a wind power converter cabinet. Background Technology

[0002] With the increasing power density and compact design requirements of wind power converter cabinets, it has become essential to improve product maintainability, simplify the disassembly and assembly of maintenance components, and enhance maintenance efficiency.

[0003] The filters in inverter cabinets easily accumulate dust, affecting ventilation and heat dissipation within the cabinet, requiring regular maintenance or replacement. Existing filter assemblies consist of a filter frame installed inside the cabinet door, the filter itself, and ventilation louvers installed outside the door. The filter frame is secured to the cabinet from the inside with screws, necessitating power off and the cabinet door opened before disassembly. This not only involves numerous operations but also exposes internal components temporarily. Furthermore, the ventilation louvers use snap-fit ​​connections, which have weak stress resistance, and excessive force risks damaging the snaps. Therefore, developing a filter installation structure that eliminates the need to open the cabinet door during filter assembly and disassembly, and avoids the snap-fit ​​structure to optimize stress on components, is of great significance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a filter installation structure for a wind power converter cabinet.

[0005] This utility model is achieved by adopting the following technical solution.

[0006] A filter installation structure for a wind power converter cabinet includes a filter frame. A ventilation hole area consisting of several dense ventilation holes is formed in the center of the filter frame. Outer through holes are formed on two opposite peripheries of the ventilation hole area. Flanged edges are formed around the inner edges of the filter frame, forming an enclosure structure in which the filter is placed. The two opposite flanges extend towards the center of the filter frame to form connecting edges, with inner through holes formed on these connecting edges. The inner and outer through holes are positioned correspondingly, and mounting screws pass through both the inner and outer through holes to fix the filter installation structure to the outside of the cabinet door.

[0007] Furthermore, the flange is L-shaped or I-shaped.

[0008] Furthermore, hook and loop fasteners are provided on the inner plane of the filter frame.

[0009] Furthermore, the filter screen is provided with clearance holes corresponding to the positions of the inner and outer through holes.

[0010] Furthermore, the cabinet door is provided with ventilation openings that correspond to the ventilation hole areas on the filter frame.

[0011] Furthermore, nut posts are provided around the vent, corresponding to the positions of the inner and outer through holes, and mounting screws are locked and fixed to the nut posts.

[0012] This application has the following beneficial effects.

[0013] This invention, through its rational design, allows for filter screen disassembly and maintenance without opening the cabinet door or turning off the power, eliminating stress on the snap-fit ​​connections and ensuring the filter screen does not bear direct stress from the screws. This invention features a simplified structure, convenient installation and maintenance, and high safety, effectively reducing the workload of disassembling the filter screen, improving work efficiency, and enhancing safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an existing filter assembly;

[0015] Figure 2 This is an exploded view of the filter frame and filter of this utility model;

[0016] Figure 3 This is a schematic diagram of the installation of the filter frame and filter screen of this utility model;

[0017] Figure 4 This is an installation diagram of this utility model.

[0018] Among them, 1. Filter screen frame; 11. Flanged edge; 12. Ventilation hole; 13. Connecting edge; 14. Outer through hole; 15. Inner through hole; 2. Filter screen; 21. Clearance hole; 3. Mounting screw; 4. Cabinet door; 41. Ventilation opening; 42. Nut post; 5. Ventilation louver shell. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, the existing filter assembly consists of a filter frame 1 and a filter 2 installed inside the cabinet door 4, and a ventilation louver shell 5 installed outside the cabinet door 4. The existing filter assembly has the following disadvantages: a. The filter frame 1 is installed inside the cabinet, and the mounting screws 3 are installed from the inside, requiring the cabinet door to be opened and the power turned off for disassembly and maintenance, affecting maintenance efficiency, and the components are exposed to the outside for a short period; b. The ventilation louver shell 5 uses a snap-fit ​​connection, which has weak stress resistance, and the snaps are at risk of cracking if excessive force is applied.

[0021] Based on the above technical problems, this utility model proposes a filter installation structure for a wind power converter cabinet, such as... Figure 2-4 As shown, the filter installation structure includes a filter frame 1, a filter 2, and mounting screws 3.

[0022] The filter frame 1 of this application is located outside the ventilation cabinet door of the converter cabinet. Specifically, a ventilation hole 12 is formed in the center of the filter frame 1, and an outer through hole 14 is formed on two opposite peripheries of the ventilation hole area. Preferably, two outer through holes 14 are provided on each side periphery, forming a total of four outer through holes 14.

[0023] The filter frame 1 has flanges 11 formed around its inner edge. The frame of this application adopts an enclosing structure with flanges 11 around its perimeter, which can be used for limiting and initially fixing the filter 2. Preferably, the flanges 11 can be L-shaped or I-shaped. I-shaped flanges can be used in low-performance, low-cost scenarios, but do not change their limiting and positioning function for the filter 2.

[0024] The flanges 11 on two opposite sides of the filter frame 1 extend toward the center of the filter frame 1 to form connecting edges 13. Inner through holes 15 are formed on the connecting edges 13. Preferably, each connecting edge 13 has two inner through holes 15, forming a total of four inner through holes 15. The inner through holes 15 correspond to the outer through holes 14. In this application, mounting screws 3 are inserted into the corresponding inner through holes 15 and outer through holes 14. The size of the mounting screws 3 matches the inner through holes 15 and outer through holes 14, with a clearance fit between them.

[0025] In order to fix the filter screen 2, this application provides hook and loop fasteners on the inner plane of the filter screen frame 1 relative to the filter screen 2. The hook and loop fasteners can be used to fix the filter screen 2.

[0026] The size of the filter screen 2 in this application corresponds to the ventilation hole area of ​​the filter screen frame 1, and the two dimensions are fitted with a clearance. The filter screen 2 is provided with four clearance holes 21 corresponding to the through holes of the frame (inner through hole 15 and outer through hole 14) to avoid the mounting screws 3.

[0027] The cabinet door 4 of the converter cabinet is provided with a ventilation opening 41 corresponding to the ventilation hole 12 on the filter frame 1. Nut posts 42 (a total of 4) corresponding to the through holes of the frame are provided around the ventilation opening 41. The nut posts 42 are located inside the cabinet door 4.

[0028] The assembly process of this utility model is as follows:

[0029] (1) The filter screen 2 is installed into the filter screen frame 1, and the frame is limited and pre-positioned by the flanges 11 around the frame.

[0030] (2) Secure the filter screen 2 with hook and loop fasteners;

[0031] (3) From the outside of the cabinet door, pass the mounting screw 3 through the outside of the frame, the filter screen 2 and the inside of the frame, and lock it to the cabinet door nut post 42.

[0032] The specific maintenance and disassembly process for this utility model is as follows:

[0033] (1) Remove the installation screws 3 from the outside of the cabinet door;

[0034] (2) Remove the entire filter ventilation installation frame;

[0035] (3) Remove filter 2 from filter frame 1.

[0036] In this invention, the filter frame 1, filter screen 2, and mounting screws 3, which constitute the filter structure, are all located outside the cabinet ventilation opening. The mounting screws 3 are installed from the outside of the cabinet, so the filter structure can be installed and maintained without opening the cabinet door 4, and without power interruption. Furthermore, this invention uses threaded connections instead of plastic clip connections, improving connection reliability, and the filter screen 2 does not contact the mounting screws 3, which reduces localized stress on the filter screen 2. This invention is rationally designed, convenient to install and maintain, and highly safe, effectively reducing the workload of disassembling the filter structure, improving work efficiency, and enhancing safety.

[0037] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A filter installation structure for a wind power converter cabinet, comprising a filter frame (1), characterized in that: The filter frame (1) forms a ventilation hole area in the center consisting of several ventilation holes (12), and an outer through hole (14) is formed on the two opposite peripheries of the ventilation hole area; the inner edge of the filter frame (1) forms a flange (11), and the flange (11) forms an enclosing structure, and the filter (2) is placed in the enclosing structure; the flange (11) on the two opposite sides extends toward the center of the filter frame (1) to form a connecting edge (13), and an inner through hole (15) is formed on the connecting edge (13). The inner through hole (15) and the outer through hole (14) are positioned correspondingly, and the mounting screw (3) passes through the inner through hole (15) and the outer through hole (14) to fix the filter mounting structure to the outside of the cabinet door (4).

2. The wind power converter cabinet filter installation structure according to claim 1, characterized in that: The flange (11) is L-shaped or I-shaped.

3. The wind power converter cabinet filter installation structure according to claim 1, characterized in that: Hook and loop fasteners are provided on the inner plane of the filter frame (1).

4. The wind power converter cabinet filter installation structure according to claim 1, characterized in that: The filter screen (2) is provided with clearance holes (21) corresponding to the positions of the inner through hole (15) and the outer through hole (14).

5. The wind power converter cabinet filter installation structure according to claim 1, characterized in that: The cabinet door (4) is provided with a vent (41) corresponding to the ventilation hole area on the filter frame (1).

6. The wind power converter cabinet filter installation structure according to claim 5, characterized in that: Nut posts (42) are provided around the vent (41) corresponding to the positions of the inner through hole (15) and the outer through hole (14), and mounting screws (3) are locked and fixed to the nut posts (42).

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