A variable frequency power supply main control board protection shell

Abstract

The utility model discloses a variable frequency power supply main control board protection shell, including tray and detachable cover board of being established on the tray, the tray includes tray body and is located the mounting panel of tray body front end, the both ends of mounting panel are equipped with mounting hole I and mounting hole II, the inside bottom of tray body is equipped with a plurality of stud, one side of tray body is equipped with the mesh mouth exposure hole, the bottom of tray body is equipped with the heat dissipation hole, the cover board is equipped with the heat dissipation hole and the terminal exposed hole, compared with prior art, has good heat dissipation performance, and convenient dismounting.

Description

Technical Field

[0001] This utility model relates to the technical field of protective housings, and in particular to the technical field of a protective housing for a frequency converter power supply main control board. Background Technology

[0002] Electrostatic precipitators are important dust removal equipment in power plants, mainly composed of the main body and high-voltage equipment. The variable frequency power supply is a type of high-voltage equipment. The dust removal efficiency of the power supply is automatically adjusted, tracked and controlled by the control system. Therefore, the system has extremely high requirements for the stability and response efficiency of the main control board.

[0003] Currently, the main control boards of frequency converters on the market are mostly self-developed products of their respective companies, with corresponding hardware circuits built around chips such as DSP and ARM. Each company is also conducting in-depth research on the main control board to improve performance, but they have neglected the protection of the main control board. The main control boards of frequency converters currently used on the market are either directly installed on the power supply after being coated with conformal paint, or they use simple shells for simple protection, such as plastic or iron powder coating, and have a pure quadrilateral shape.

[0004] While using plastic reduces weight and makes manufacturing easier, it is susceptible to aging and cracking over time due to temperature variations. Using a metal casing, such as iron with a powder-coated finish, protects the main control board from impacts by other hard objects. However, the casing protection for the main control board needs to consider not only impact protection but also heat dissipation performance and ease of disassembly and assembly. Summary of the Invention

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a protective shell for the main control board of a frequency converter power supply, which has good heat dissipation performance and is easy to disassemble and assemble.

[0006] To achieve the above objectives, this utility model proposes a protective housing for a frequency converter power supply main control board, including a tray and a detachable cover plate on the tray. The tray includes a tray body and a mounting panel at the front end of the tray body. The mounting panel has mounting holes I and II at both ends, respectively. The inner bottom of the tray body has several studs. One side of the tray body has a mesh opening. The bottom of the tray body has heat dissipation holes. The cover plate has heat dissipation holes and exposed wiring terminal holes.

[0007] Preferably, the pallet body is a groove-shaped structure formed by bending an aluminum alloy plate. The bottom and front end of the side wall of the pallet body are provided with inwardly bent edges at 90 degrees, and the rear end of the bottom of the pallet body is provided with an inwardly bent edge at 90 degrees.

[0008] Preferably, the mounting panel is an inverted L-shaped structure made of bent aluminum alloy plate, and the front end of the cover plate is fixedly connected to the horizontal side of the mounting panel by a number of screws.

[0009] Preferably, the mounting hole I is a U-shaped hole structure, and the mounting hole II includes a circular hole and a U-shaped groove communicating with the circular hole, wherein the width of the U-shaped groove is smaller than the diameter of the circular hole.

[0010] Preferably, the rear end of the cover plate is provided with two right-angle connectors, which are fixedly connected to the corresponding side wall of the tray body by screws.

[0011] Preferably, the cover plate is formed by repeatedly bending an aluminum alloy plate, which has a front part, an inclined part, a rear part and a vertical part. The front part of the cover plate is located at the high end of the inclined part, the rear part of the cover plate is located at the low end of the inclined part, the vertical part is located at the rear end of the rear part of the cover plate, the front part of the cover plate has heat dissipation holes, and the rear part of the cover plate has exposed wiring terminal holes and right-angle connectors.

[0012] Preferably, the upper end of the side wall of the tray body matches the cover plate.

[0013] Preferably, the side of the tray body with the exposed mesh opening also has heat dissipation holes.

[0014] The beneficial effects of this utility model are as follows: This utility model facilitates the assembly and disassembly of the main control board of the frequency converter by using a tray and a detachable cover plate on the tray; the tray body and the mounting panel at the front end of the tray body have mounting holes I and II at both ends, allowing the protective shell to be installed on the frequency converter cabinet with screws, ensuring good fixation reliability and easy assembly and disassembly; the inner bottom of the tray body has several studs, facilitating the assembly of the main control board of the frequency converter; one side of the tray body has an exposed mesh opening, the bottom of the tray body has heat dissipation holes, and the cover plate has heat dissipation holes and exposed wiring terminal holes. The heat dissipation holes increase air convection inside and outside the shell, effectively dissipating heat to the external environment. Compared with the prior art, it has good heat dissipation performance and is easy to assemble and disassemble.

[0015] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a protective shell for a frequency converter power supply main control board according to the present invention; Figure 2 This is a perspective view of a protective shell for a frequency converter power supply main control board according to this utility model; Figure 3 It is a 3D view of the tray; Figure 4 This is a 3D view of the cover plate.

[0017] In the diagram: 1-Tray, 2-Cover plate, 3-Heat dissipation hole, 4-Exposed terminal block hole, 5-Horizontal side, 6-Screw, 7-Right angle connector, 11-Tray body, 12-Mounting panel, 13-Mounting hole I, 14-Mounting hole II, 15-Stud, 16-Exposed mesh hole, 17-Folded edge, 21-Front part of cover plate, 22-Inclined part, 23-Rear part of cover plate, 24-Vertical part, 141-Circular hole, 142-U-shaped groove. Detailed Implementation

[0018] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model discloses a protective shell for a frequency converter power supply main control board, including a tray 1 and a cover plate 2 detachably mounted on the tray 1. The tray 1 includes a tray body 11 and a mounting panel 12 located at the front end of the tray body 11. The mounting panel 12 has mounting holes I13 and II14 at both ends, respectively. The inner bottom of the tray body 11 is provided with a plurality of studs 15. One side of the tray body 11 is provided with a mesh opening 16. The bottom of the tray body 11 is provided with heat dissipation holes 3. The cover plate 2 is provided with heat dissipation holes 3 and terminal block openings 4.

[0019] The pallet body 11 is a groove-shaped structure formed by bending an aluminum alloy plate. The bottom and front end of the side wall of the pallet body 11 are provided with inwardly bent edges 17 at 90 degrees. The rear end of the bottom of the pallet body 11 is provided with inwardly bent edges 17 at 90 degrees.

[0020] The mounting panel 12 is an inverted L-shaped structure made of bent aluminum alloy plate, and the front end of the cover plate 2 is fixedly connected to the horizontal side 5 of the mounting panel 12 by a number of screws 6.

[0021] The mounting hole I13 has a U-shaped hole structure, and the mounting hole II14 includes a circular hole 141 and a U-shaped groove 142 communicating with the circular hole 141. The width of the groove 142 is smaller than the diameter of the circular hole 141.

[0022] The rear end of the cover plate 2 is provided with two right-angle connectors 7, which are fixedly connected to the corresponding side wall of the tray body 11 by screws 6.

[0023] A cover plate 2 is formed by repeatedly bending an aluminum alloy plate, comprising a front part 21, an inclined part 22, a rear part 23, and a vertical part 24. The front part 21 is located at the high end of the inclined part 22, the rear part 23 is located at the low end of the inclined part 22, and the vertical part 24 is located at the rear end of the rear part 23. The front part 21 is provided with heat dissipation holes 3, and the rear part 23 is provided with exposed terminal holes 4 and right-angle connectors 7.

[0024] The upper end of the side wall of the tray body 11 matches the cover plate 2.

[0025] The tray body 11 also has heat dissipation holes 3 on one side where the mesh opening 16 is exposed.

[0026] The working process of this utility model: This utility model discloses a protective housing for the main control board of a frequency converter. During operation, the main control board of the frequency converter is easily disassembled and assembled by means of a tray 1 and a cover plate 2 detachably mounted on the tray 1. The mounting panel 12 has mounting holes I13 and II14 at both ends, allowing the protective housing to be installed on the frequency converter cabinet with screws, ensuring good fixation reliability and easy disassembly and assembly. The inner bottom of the tray body 11 has several studs 15, facilitating the assembly of the main control board of the frequency converter. One side of the tray body 11 has a mesh opening 16, and the bottom of the tray body 11 has a heat dissipation hole 3. The cover plate 2 has heat dissipation holes 3 and terminal block openings 4. The heat dissipation holes 3 increase air convection inside and outside the housing, effectively dissipating heat to the external environment. Compared with the prior art, it has good heat dissipation performance and is easy to disassemble and assemble.

[0027] The protective shell is made of aluminum alloy plate, which has the characteristics of corrosion resistance, impact resistance and light weight.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A protective casing for a frequency converter power supply main control board, characterized in that: The tray (1) includes a tray body (11) and a cover plate (2) detachably mounted on the tray (1). The tray (1) includes a tray body (11) and a mounting panel (12) located at the front end of the tray body (11). The mounting panel (12) has mounting holes I (13) and II (14) at both ends. The inner bottom of the tray body (11) has several studs (15). The side of the tray body (11) has a mesh opening (16). The bottom of the tray body (11) has a heat dissipation hole (3). The cover plate (2) has a heat dissipation hole (3) and a terminal block opening (4).

2. The protective casing for the main control board of a frequency converter power supply as described in claim 1, characterized in that: The pallet body (11) is a groove-shaped structure formed by bending aluminum alloy plate. The bottom and front end of the side wall of the pallet body (11) are provided with inwardly bent edges (17) at 90 degrees. The rear end of the bottom of the pallet body (11) is provided with inwardly bent edges (17).

3. The protective casing for the main control board of a frequency converter power supply as described in claim 1, characterized in that: The mounting panel (12) is an inverted L-shaped structure made of bent aluminum alloy plate. The front end of the cover plate (2) is fixedly connected to the horizontal side (5) of the mounting panel (12) by several screws (6).

4. The protective casing for the main control board of a frequency converter power supply as described in claim 1, characterized in that: The mounting hole I (13) is a U-shaped hole structure, and the mounting hole II (14) includes a circular hole (141) and a U-shaped groove (142) communicating with the circular hole (141). The width of the groove (142) is smaller than the diameter of the circular hole (141).

5. The protective casing for the main control board of a frequency converter power supply as described in claim 1, characterized in that: The rear end of the cover plate (2) is provided with two right-angle connectors (7), which are fixedly connected to the corresponding side wall of the tray body (11) by screws (6).

6. The protective casing for the main control board of a frequency converter power supply as described in claim 2, characterized in that: A cover plate (2) is formed by repeatedly bending an aluminum alloy plate, which has a front part (21), an inclined part (22), a rear part (23) and a vertical part (24). The front part (21) is provided at the high end of the inclined part (22), the rear part (23) is provided at the low end of the inclined part (22), and the vertical part (24) is provided at the rear end of the rear part (23). The front part (21) is provided with heat dissipation holes (3), and the rear part (23) is provided with exposed terminal holes (4) and right-angle connectors (7).

7. The protective casing for the main control board of a frequency converter power supply as described in claim 6, characterized in that: The upper end of the side wall of the tray body (11) matches the cover plate (2).

8. A protective casing for a frequency converter main control board as described in any one of claims 1 to 7, characterized in that: The tray body (11) is provided with a heat dissipation hole (3) on the side with the mesh opening (16).

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