Filter capacitor capable of suppressing difference mode

Abstract

The utility model provides a suppression differential mode filter capacitor, which comprises a capacitor body and a protection box, the top wall of the protection box is provided with an opening, an upper cover is arranged at the opening, the upper cover is provided with a through hole for the capacitor body to pass through, the inner wall of the through hole is provided with a plurality of compression blocks, the compression blocks are rubber compression blocks, the four end corners of the upper cover are provided with mounting holes, and the mounting holes are communicated with the through hole. Mounting holes are formed in the capacitor body, threaded holes corresponding to the mounting holes are formed in the four corners of the upper end of the protection box, bolts penetrate through the corresponding mounting holes and are arranged in the threaded holes in a threaded mode, a honeycomb-shaped anti-explosion hole group layer is arranged on the inner side wall of a machine shell of the capacitor body, and the inner side of the honeycomb-shaped anti-explosion hole group layer is coated with a nano ceramic corrosion-resistant layer. The beneficial effects of the utility model are that the capacitor body is placed in the protection box, and is fastened through the pressing block, thereby reducing the collision in the transportation process; and meanwhile, the honeycomb-shaped anti-explosion hole group layer and the nano ceramic corrosion-resistant layer are arranged in the shell, so that the explosion and corrosion conditions of the shell cannot be caused even if the shell is stored for a long time, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of capacitors, in particular to a differential mode suppression filter capacitor. Background Art

[0002] Mode-suppression filter capacitors are commonly used energy storage devices in rectifier circuits. Installed across the rectifier circuit, they enhance the efficiency and smoothness of the DC output. Currently, collisions between capacitors during transportation can damage their internal components. Extended storage can also lead to explosions and corrosion due to the storage environment. Utility Model Content

[0003] Based on the problems arising from the above background, the purpose of the present invention is to provide a differential mode suppression filter capacitor, which effectively reduces the damage caused by collision during transportation, has explosion-proof and corrosion-resistant effects, and increases its service life.

[0004] The technical solution of the utility model is: a differential mode suppression filter capacitor, comprising a capacitor body and a protection box, the top wall of the protection box having an opening, a top cover being provided at the opening, the top cover being provided with a through-hole for the capacitor body to pass through, a plurality of pressing blocks being provided on the inner wall of the through-hole, the pressing blocks being rubber pressing blocks, mounting holes being provided at the four end corners of the top cover, threaded holes corresponding to the mounting holes being provided at the four corners of the upper end of the protection box, bolts passing through the corresponding mounting holes and threads being provided in the threaded holes, the inner side wall of the casing of the capacitor body being provided with a honeycomb-shaped explosion-proof hole group layer, the inner side of the honeycomb-shaped explosion-proof hole group layer being coated with a nano-ceramic corrosion-resistant layer.

[0005] Furthermore, each side wall of the protection box is provided with a heat dissipation hole.

[0006] Furthermore, an anti-slip platform is provided on the lower surface of the bottom wall of the protection box.

[0007] Furthermore, the upper cover is provided with a plurality of through holes for the capacitor bodies to pass through, and a plurality of capacitor bodies are installed in the protective box.

[0008] Furthermore, a dust cover is buckled onto the upper cover.

[0009] Furthermore, a support plate is provided at the middle and lower ends of the protective box, and a circular hole is provided on the support plate for the capacitor body to pass through, and the diameter of the upper end of the circular hole is smaller than the diameter of the lower end, and the diameter of the lower end of the circular hole is equal to the outer diameter of the capacitor body.

[0010] The advantages and positive effects of the utility model are as follows: by adopting the above technical solution, the capacitor body is placed in a protective box and fastened by a clamping block, thereby reducing its collision during transportation; at the same time, the inside of the capacitor casing has a honeycomb-shaped explosion-proof hole group layer and a nano-ceramic corrosion-resistant layer, so that it is not easily affected by the environment and causes it to burst or corrode even if stored for a long time, thereby improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present utility model.

[0012] Figure 2 It is a top view of the upper cover of the present utility model.

[0013] Figure 3 It is a cross-sectional view of the side wall of the housing.

[0014] Figure 4 This is a top view of multiple capacitors installed on the upper cover.

[0015] In the picture:

[0016] 1. Capacitor body 2. Protective box 3. Upper cover

[0017] 4. Perforation 5. Compression block 6. Honeycomb explosion-proof hole group

[0018] 7. Nano-ceramic corrosion-resistant layer 8. Support plate 9. Mounting hole

[0019] 10. Casing DETAILED DESCRIPTION Example 1

[0020] like Figure 1-3 As shown, the technical solution of the utility model is: a differential mode suppression filter capacitor, comprising a capacitor body 1 and a protective box 2. The top wall of the protective box 2 is open, and an upper cover 3 is provided at the opening. The upper cover 3 is provided with a through-hole 4 for the capacitor body 1 to pass through, and a plurality of clamping blocks 5 are provided on the inner wall of the through-hole 4. The clamping blocks 5 are rubber clamping blocks. The four end corners of the upper cover 3 are provided with mounting holes 9, and threaded holes corresponding to the mounting holes are provided at the four corners of the upper end of the protective box 2. Bolts pass through the corresponding mounting holes 9 and the threads are provided in the threaded holes. The inner wall of the casing 10 of the capacitor body 1 is provided with a honeycomb explosion-proof hole group layer 6, and the inner side of the honeycomb explosion-proof hole group layer 6 is coated with a nano-ceramic corrosion-resistant layer 7, which improves the thermal conductivity and explosion-proof effect of the inner wall of the capacitor casing, and improves the corrosion resistance of the inner wall of the capacitor casing.

[0021] In this embodiment, each side wall of the protection box 2 is provided with a heat dissipation hole (the heat dissipation holes are not shown in the figure).

[0022] In this embodiment, an anti-slip platform is provided on the lower surface of the bottom wall of the protection box 2 .

[0023] Example 2

[0024] like Figure 4 As shown, the upper cover 3 is provided with a plurality of through-holes 4 for the capacitor bodies 1 to pass through, and a plurality of capacitor bodies 1 are installed in the protective box 2. A dust cover is buckled on the upper cover 3 to protect it from dust and moisture (not shown in the figure).

[0025] In this embodiment, a support plate 8 is provided at the middle and lower ends of the protective box 2. A circular hole is provided on the support plate 8 for the capacitor body to pass through. The diameter of the upper end of the circular hole is smaller than the diameter of the lower end, and the diameter of the lower end of the circular hole is equal to the outer diameter of the capacitor body.

[0026] The working principle of this embodiment is as follows: the capacitor body is a differential mode suppression filter capacitor, and by placing it in a protective box 2 for transportation, it can reduce external damage to it and increase its service life; and the inner wall of the casing of the capacitor body 1 is provided with a honeycomb-shaped explosion-proof hole group layer 6, which improves the thermal conductivity and explosion-proof effect of its inner wall, and the nano-ceramic corrosion-resistant layer 7 coated on the honeycomb-shaped explosion-proof hole group layer 6 improves the corrosion resistance of the inner wall of the casing.

[0027] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A differential mode suppression filter capacitor, characterized by: It includes a capacitor body and a protection box. The top wall of the protection box is open, and an upper cover is provided at the opening. The upper cover is provided with a through hole for the capacitor body to pass through. A plurality of clamping blocks are provided on the inner wall of the through hole. The clamping blocks are rubber clamping blocks. The four end corners of the upper cover are provided with mounting holes. The four corners of the upper end of the protection box are provided with threaded holes corresponding to the mounting holes. Bolts pass through the corresponding mounting holes and the threads are provided in the threaded holes. The inner side wall of the casing of the capacitor body is provided with a honeycomb explosion-proof hole group layer, and the inner side of the honeycomb explosion-proof hole group layer is coated with a nano-ceramic corrosion-resistant layer.

2. The differential mode suppression filter capacitor according to claim 1, characterized in that: Each side wall of the protection box is provided with a heat dissipation hole.

3. The differential mode suppression filter capacitor according to claim 1, characterized in that: The lower surface of the bottom wall of the protection box is provided with an anti-slip platform.

4. The differential mode suppression filter capacitor according to claim 1, characterized in that: The upper cover is provided with a plurality of through holes for the capacitor bodies to pass through, and a plurality of capacitor bodies are installed in the protection box.

5. The differential mode suppression filter capacitor according to claim 1, characterized in that: A dust cover is buckled on the upper cover.

6. The differential mode suppression filter capacitor according to claim 1, characterized in that: A support plate is provided at the middle and lower end of the protection box. A circular hole is provided on the support plate for the capacitor body to pass through. The upper end diameter of the circular hole is smaller than the lower end diameter, and the lower end diameter of the circular hole is equal to the outer diameter of the capacitor body.

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