Double-layer explosion-proof sheet structure of capacitor

Abstract

The utility model discloses a double-layer explosion-proof sheet structure of a capacitor, which comprises a left mounting sheet, a right mounting sheet, a first explosion-proof sheet and a second explosion-proof sheet, the first explosion-proof sheet and the second explosion-proof sheet are mutually laminated, two ends of the first explosion-proof sheet and the second explosion-proof sheet are respectively connected with the mounting sheets on two sides, and openings are arranged on the first explosion-proof sheet and the second explosion-proof sheet. The two openings are mutually aligned in the direction perpendicular to the first anti-explosion piece, the first anti-explosion piece and the second anti-explosion piece form a cut-off area at the positions corresponding to the openings, and through stacking of the first anti-explosion piece and the second anti-explosion piece, the requirements for the width and thickness of a single anti-explosion piece can be effectively lowered, heating can be lowered while the sensitivity of the anti-explosion piece is improved, and the service life of the anti-explosion piece is prolonged. Therefore, the overall performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof discs, in particular to a double-layer explosion-proof disc structure for a capacitor. Background Art

[0002] As a safety component in the capacitor, the explosion-proof piece is generally provided with a notch on the explosion-proof piece to form a weak point. When heat and expansion are generated inside the capacitor, the weak point is pulled apart by mechanical pulling force to cut off the line, thereby achieving a protective effect.

[0003] The sensitivity of traditional explosion-proof plates depends on the thickness and width of the weak point. The lower the thickness and the narrower the width of the weak point, the stronger the sensitivity. However, explosion-proof plates that are too thin and too narrow have serious heating problems, which in turn cause heating failures in the explosion-proof plates, seriously affecting the normal operation of the capacitor. Therefore, there is room for improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a double-layer explosion-proof plate structure for a capacitor, which can reduce the thickness and width of the weak point while reducing the heat generation to ensure its performance.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A double-layer explosion-proof plate structure for a capacitor, comprising two mounting plates arranged left and right;

[0007] A first explosion-proof sheet and a second explosion-proof sheet are stacked on each other, and both ends of the first explosion-proof sheet and the second explosion-proof sheet are connected to the mounting sheets on both sides respectively. The first explosion-proof sheet and the second explosion-proof sheet are both provided with openings, and the two openings are aligned with each other along a direction perpendicular to the first explosion-proof sheet, and the first explosion-proof sheet and the second explosion-proof sheet form a cutting area at the corresponding opening positions.

[0008] As a further improvement of the present invention, a heat dissipation gap is formed between the first explosion-proof plate and the second explosion-proof plate.

[0009] As a further improvement of the present invention, a positioning hole and a positioning rod are respectively provided on the sides of the first explosion-proof piece and the second explosion-proof piece that are close to each other. The positioning rod is inserted into the positioning hole to limit the position of the first explosion-proof piece relative to the second explosion-proof piece. A limiting ring is provided on the positioning rod, and the limiting ring is used to contact the first explosion-proof piece to form a heat dissipation gap between the first explosion-proof piece and the second explosion-proof piece.

[0010] As a further improvement of the present invention, the first explosion-proof plate and the second explosion-proof plate are arranged up and down, and the ends of the first explosion-proof plate and the second explosion-proof plate respectively form a first mounting hole and a second mounting hole, the aperture of the first mounting hole is smaller than the aperture of the second mounting hole, and a connecting column is provided on the mounting plate, and the connecting column includes a first connecting section and a second connecting section adapted to the aperture of the first mounting hole and the second mounting hole, and the first connecting section and the second connecting section are used to respectively sleeve the first mounting hole and the second mounting hole.

[0011] As a further improvement of the utility model, a fixing nut is further included, wherein the fixing nut is threadedly connected to the second connecting section, and the fixing nut is used to fix the connecting column and the first explosion-proof disk / the second explosion-proof disk.

[0012] As a further improvement of the present invention, a fixing plate is provided at one end of the two mounting plates that are away from each other, and the mounting plates are connected to the capacitor via the fixing plates.

[0013] As a further improvement of the present invention, the fixing plate and the mounting plate are respectively provided with a limiting hole and a limiting groove, and the limiting hole and the limiting groove are connected to each other by bolts so that the fixing plate is positioned relative to the mounting plate.

[0014] Beneficial effects of the utility model:

[0015] 1. By stacking the first explosion-proof disk and the second explosion-proof disk, the requirements for the width and thickness of a single explosion-proof disk can be effectively reduced, thereby increasing the sensitivity of the explosion-proof disk and reducing heat generation, thereby improving the overall performance;

[0016] 2. The stacking method can reduce cost loss, and the overall structure is compact and small in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall installation of the utility model;

[0018] Figure 2 This is a schematic cross-sectional diagram of the installation of the positioning column of the utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the installation of the connecting column of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation of the fixing plate of the utility model.

[0021] Figure numerals: 1. mounting plate; 2. first explosion-proof plate; 3. second explosion-proof plate; 4. opening; 5. cut-off area; 6. heat dissipation gap; 7. positioning hole; 8. positioning rod; 9. limiting ring; 10. first mounting hole; 11. second mounting hole; 12. connecting column; 13. first connecting section; 14. second connecting section; 15. fixing nut; 16. fixing plate; 17. limiting hole; 18. limiting groove. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, wherein the same components are indicated by the same reference numerals.

[0023] like Figure 1-4 As shown, a double-layer explosion-proof plate structure of a capacitor includes two mounting plates 1 arranged on the left and right.

[0024] Preferably, it also includes a first explosion-proof plate 2 and a second explosion-proof plate 3 which are stacked on each other, the two ends of the first explosion-proof plate 2 and the second explosion-proof plate 3 are respectively connected to the mounting plates 1 on both sides, the first explosion-proof plate 2 and the second explosion-proof plate 3 are both provided with openings 4, the two openings 4 are aligned with each other in a direction perpendicular to the first explosion-proof plate 2, and the first explosion-proof plate 2 and the second explosion-proof plate 3 form a cutting area 5 at the position of the openings 4.

[0025] Due to the stacking method of the first explosion-proof disc 2 and the second explosion-proof disc 3, the thickness and width of the cut-off area 5 corresponding to the first explosion-proof disc 2 and the second explosion-proof disc 3 can be reduced, thereby achieving the effect of improving the precision, and the first explosion-proof disc 2 and the second explosion-proof disc 3 can also ensure the connectivity and carrying capacity of the circuit. At the same time, the stacking method can ensure the compact structure while ensuring its heat dissipation performance, so as to reduce failures caused by overheating.

[0026] Preferably, a heat dissipation gap 6 is formed between the first explosion-proof disc 2 and the second explosion-proof disc 3 .

[0027] The heat dissipation gap 6 can be provided to further improve the heat dissipation capacity, so as to improve the overall load-bearing capacity of the first explosion-proof disc 2 and the second explosion-proof disc 3 .

[0028] Preferably, a positioning hole 7 and a positioning rod 8 are respectively provided on the sides of the first explosion-proof plate 2 and the second explosion-proof plate 3 that are close to each other. The positioning rod 8 is inserted into the positioning hole 7 to limit the position of the first explosion-proof plate 2 relative to the second explosion-proof plate 3. A limiting ring 9 is provided on the positioning rod 8. The limiting ring 9 is used to contact the first explosion-proof plate 2 to form a heat dissipation gap 6 between the first explosion-proof plate 2 and the second explosion-proof plate 3.

[0029] The arrangement of the positioning rod 8 and the positioning hole 7 can improve the connection stability between the first explosion-proof disc 2 and the second explosion-proof disc 3, and can also reduce their thermal deformation to ensure their explosion-proof performance.

[0030] Preferably, the first explosion-proof disc 2 and the second explosion-proof disc 3 are arranged up and down, and the first mounting hole 10 and the second mounting hole 11 are formed at the ends of the first explosion-proof disc 2 and the second explosion-proof disc 3 respectively. The aperture of the first mounting hole 10 is smaller than that of the second mounting hole 11. A connecting column 12 is provided on the mounting disc 1, and the connecting column 12 includes a first connecting section 13 and a second connecting section 14 adapted to the apertures of the first mounting hole 10 and the second mounting hole 11. The first connecting section 13 and the second connecting section 14 are used to respectively sleeve the first mounting hole 10 and the second mounting hole 11.

[0031] The installation of the connecting column 12 is facilitated by setting the aperture sizes of the first mounting hole 10 and the second mounting hole 11 , thereby completing the installation of the first explosion-proof disk 2 and the second explosion-proof disk 3 in cooperation with the first connecting section 13 and the second connecting section 14 .

[0032] More specifically, in this embodiment, the connecting post 12 is made of conductive material to facilitate connection with the circuit.

[0033] Preferably, a fixing nut 15 is further included. The fixing nut 15 is threadedly connected to the second connecting section 14 , and the fixing nut 15 is used to fix the connecting column 12 and the first explosion-proof disc 2 / the second explosion-proof disc 3 .

[0034] The setting of the fixing nut 15 can facilitate the fixing of the first explosion-proof disc 2 and the second explosion-proof disc 3 on the connecting column 12, and also facilitate the subsequent connection with the circuit, that is, the circuit is wound on the connecting column 12 and tightened by the fixing nut 15 to complete the connection.

[0035] Preferably, a fixing plate 16 is provided at one end of the two mounting plates 1 that is away from each other, and the mounting plates 1 are connected to the capacitor via the fixing plates 16 .

[0036] The connection with the capacitor is facilitated by the provision of the fixing sheet 16 .

[0037] Preferably, a limiting hole 17 and a limiting groove 18 are respectively provided on the fixing plate 16 and the mounting plate 1 , and the limiting hole 17 and the limiting groove 18 are connected to each other by bolts so that the position of the fixing plate 16 relative to the mounting plate 1 is adjustable.

[0038] By setting the limiting hole 17 and the limiting groove 18, the position of the fixing plate 16 can be adjusted before installation, so as to facilitate the installation of the entire device into the capacitor. At the same time, the position of the fixing plate 16 relative to the installation plate 1 can also be adjusted to adapt to capacitors of different sizes.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A double-layer explosion-proof disk structure for capacitors, characterized in that: It comprises two mounting plates (1) arranged on the left and right; A first explosion-proof disc (2) and a second explosion-proof disc (3) are stacked on each other, the two ends of the first explosion-proof disc (2) and the second explosion-proof disc (3) are respectively connected to the mounting discs (1) on both sides, the first explosion-proof disc (2) and the second explosion-proof disc (3) are both provided with openings (4), the two openings (4) are aligned with each other in a direction perpendicular to the first explosion-proof disc (2), and the first explosion-proof disc (2) and the second explosion-proof disc (3) form a cut-off area (5) at the position of the openings (4) corresponding to the first explosion-proof disc (2) and the second explosion-proof disc (3).

2. A capacitor double-layer explosion-proof disk structure according to claim 1, characterized in that: A heat dissipation gap (6) is formed between the first explosion-proof plate (2) and the second explosion-proof plate (3).

3. A capacitor double-layer explosion-proof disk structure according to claim 2, characterized in that: A positioning hole (7) and a positioning rod (8) are respectively provided on the mutually adjacent sides of the first explosion-proof plate (2) and the second explosion-proof plate (3); the positioning rod (8) is plugged into the positioning hole (7) to limit the position of the first explosion-proof plate (2) relative to the second explosion-proof plate (3); a limiting ring (9) is provided on the positioning rod (8); the limiting ring (9) is used to abut against the first explosion-proof plate (2) so that a heat dissipation gap (6) is formed between the first explosion-proof plate (2) and the second explosion-proof plate (3).

4. A capacitor double-layer explosion-proof disk structure according to claim 1, characterized in that: The first explosion-proof disc (2) and the second explosion-proof disc (3) are arranged in an upper and lower position, and the ends of the first explosion-proof disc (2) and the second explosion-proof disc (3) respectively form a first mounting hole (10) and a second mounting hole (11), the aperture of the first mounting hole (10) is smaller than that of the second mounting hole (11), and a connecting column (12) is provided on the mounting disc (1), and the connecting column (12) comprises a first connecting section (13) and a second connecting section (14) which are adapted to the apertures of the first mounting hole (10) and the second mounting hole (11), and the first connecting section (13) and the second connecting section (14) are used to respectively cover the first mounting hole (10) and the second mounting hole (11).

5. A capacitor double-layer explosion-proof disk structure according to claim 4, characterized in that: It also includes a fixing nut (15), which is threadedly connected to the second connecting section (14), and the fixing nut (15) is used to fix the connecting column (12) and the first explosion-proof disk (2) / the second explosion-proof disk (3).

6. A capacitor double-layer explosion-proof disk structure according to claim 1, characterized in that: A fixing plate (16) is provided at one end of the two mounting plates (1) that is away from each other, and the mounting plates (1) are connected to the capacitor via the fixing plate (16).

7. A capacitor double-layer explosion-proof disk structure according to claim 6, characterized in that: The fixing plate (16) and the mounting plate (1) are respectively provided with a limiting hole (17) and a limiting groove (18); the limiting hole (17) and the limiting groove (18) are connected to each other by bolts so that the position of the fixing plate (16) relative to the mounting plate (1) can be adjusted.

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