CN220796474U - Explosion-proof capacitor - Google Patents
Explosion-proof capacitor Download PDFInfo
- Publication number
- CN220796474U CN220796474U CN202322070632.2U CN202322070632U CN220796474U CN 220796474 U CN220796474 U CN 220796474U CN 202322070632 U CN202322070632 U CN 202322070632U CN 220796474 U CN220796474 U CN 220796474U
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- CN
- China
- Prior art keywords
- explosion
- hole
- proof
- shell
- core body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 28
- 238000005192 partition Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 description 11
- 238000005457 optimization Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Connector Housings Or Holding Contact Members (AREA)
Abstract
The utility model discloses an explosion-proof capacitor, which relates to the technical field of capacitors and comprises a shell, an end cover, a core body, a connecting terminal and an explosion-proof plug, wherein the core body is arranged in the shell, the end cover plugs an opening of the shell and is provided with the connecting terminal, a movable horizontal partition board is arranged in the shell to separate the core body from the end cover and form two independent spaces, one end of the connecting terminal extends towards the inside of the shell to form a rod core, a vertically-arranged through hole is formed in the partition board, a conductive metal piece is arranged in the through hole in a built-in manner of the through hole, the rod core is adaptively inserted in the through hole and is contacted with the metal piece, the explosion-proof plug is arranged at the bottom of the partition board and covers the through hole, the explosion-proof plug is provided with a conductive area and an insulating area, the conductive area is overlapped with the metal piece and is electrically connected with the core body, the insulating area is opposite to the hollow area of the through hole, and when the partition board is pushed to move upwards by gas expansion, the explosion-proof plug can be pushed away from the partition board and separated from the metal piece, so that the core body and the connecting terminal is disconnected from the electricity.
Description
Technical Field
The utility model relates to the technical field of capacitors, in particular to an explosion-proof capacitor.
Background
The capacitor is an element for storing electric quantity and electric energy, since the capacitor is a container, the electric energy which can be stored in the capacitor is limited, and the capacitor is influenced by factors such as operating voltage, operating current, ambient temperature, power grid harmonic wave and the like in the use process, so that the capacitor core is at risk of breakdown, and a large amount of gas is generated in the broken core, and the gas is accumulated in the capacitor to expand the volume of the capacitor, so that explosion is finally caused.
Disclosure of Invention
In order to solve the technical problems in the background technology, the utility model provides an explosion-proof capacitor.
An explosion-proof capacitor, comprising: the anti-explosion plug is arranged at the bottom of the partition board and covers the through hole, the anti-explosion plug is provided with a conductive area and an insulating area, the conductive area is connected with the metal piece in a lap joint mode and electrically connected with the core body, the insulating area is opposite to the hollow area of the through hole, when the partition board is pushed to move upwards by gas expansion, the anti-explosion plug can be pushed away from the partition board and is separated from the metal piece by the rod core, and the core body and the connecting terminal are disconnected from each other.
As a further optimization of the scheme, the partition board is made of insulating materials, and dynamic sealing is formed between the outer edge of the partition board and the inner wall of the shell.
As a further optimization of the above scheme, the end of the rod core is in the through hole and spaced from the explosion-proof plug.
As a further optimization of the scheme, the coverage area of the explosion-proof plug insulation area is not smaller than the through hole hollow area.
As a further optimization of the scheme, the metal parts are contained, and the metal parts are circumferentially distributed on the inner wall of the through hole.
As a further optimization of the scheme, an insulator is further arranged at the joint of the connecting terminal and the end cover.
1. According to the explosion-proof capacitor provided by the utility model, the gas accumulation generated by breakdown of the core body can push the partition plate to move upwards, so that the space where the gas is located is enlarged, the air pressure is reduced, and the explosion risk is reduced.
2. According to the explosion-proof capacitor provided by the utility model, in the moving process of the partition board, the rod core pushes the explosion-proof plug open, so that the connection terminal is disconnected from the electricity of the core body, the capacitor is blocked from continuously working, and explosion is avoided.
Drawings
Fig. 1 is a schematic cross-sectional view of an explosion-proof capacitor according to the present utility model.
Detailed Description
An explosion-proof capacitor according to this embodiment, referring to fig. 1, includes: the anti-explosion plug comprises a shell 1, an end cover 2, a core body 3, a connecting terminal 4 and an anti-explosion plug 5.
The core 3 is arranged inside the shell 1, the end cover 2 seals the opening of the shell 1 and is provided with the connecting terminal 4, the connecting terminal 4 is also provided with an insulator 9 at the joint of the end cover 2, the shell 1 is internally provided with the horizontal partition plate 6 which can vertically move so as to separate the core 3 and the end cover 2 and form two independent spaces, when a large amount of gas is accumulated in the space where the core 3 is broken down, the gas can push the partition plate 6 to compress the other space, and correspondingly, the space where the core 3 is located can be enlarged, thereby reducing the air pressure and avoiding explosion.
The partition plate 6 is made of insulating materials, and dynamic sealing is formed between the outer edge of the partition plate 6 and the inner wall of the shell 1.
One end of the connecting terminal 4 extends towards the inside of the shell 1 to form a rod core 41, the partition plate 6 is provided with a vertically-arranged through hole 8, a conductive metal piece 7 is arranged in the through hole 8, and the rod core 41 is inserted in the through hole 8 in a matching manner and is contacted with the metal piece 7.
Preferably, the metal piece 7 is coplanar with the inner wall of the through hole 8 so as to ensure that no gap for gas circulation occurs when the rod core 1 is inserted into the through hole 8.
The explosion-proof plug 5 is arranged at the bottom of the partition board 6 and covers the through hole 8, the explosion-proof plug 5 is made of conductive materials, such as copper foil, an insulating material is paved in a part area of the surface of the explosion-proof plug as an insulating area 52, the rest is a conductive area 51, the conductive area 51 is overlapped with the metal piece 7 and is electrically connected with the core body 3, and the connecting terminal 4 is overlapped with the core body 3 through the rod core 41, the metal piece and the conductive area 51.
The insulating region 52 is opposite to the hollow region of the through hole 8, and the coverage area of the insulating region 52 of the explosion-proof plug 5 is not smaller than that of the hollow region of the through hole 8, so that the rod core 41 can only contact with the insulating region 52, and thus, when the separator 6 is separated from the through the rod core 41, the explosion-proof plug 5 is propped against the insulating region in the moving process of the separator 6, the separation is formed.
In order to enable the conductive area 51 to overlap with the metal pieces 7 better to form a passage, a plurality of metal pieces 7 can be arranged in the through hole 8, and the metal pieces 7 are circumferentially distributed on the inner wall of the through hole 8.
When the separator 6 is pushed up by the expansion of the gas, the explosion-proof plug 5 can be pushed away from the separator 6 by the rod core 41 and separated from the metal piece 7, so that the electrical connection of the core 3 and the connection terminal 4 is disconnected.
Further, the end of the rod core 41 is spaced from the explosion-proof plug 5 by a certain distance in the through hole 8, if the rod core is in direct contact with the explosion-proof plug, when the separator 6 is pushed up by gas expansion, the explosion-proof plug 5 is immediately pushed up to disconnect the connecting terminal 4 from the passage of the core body 3, and a buffer space is provided by a certain distance, so that the safety can be ensured by automatically cutting off the power supply only when the capacitor breaks down to a certain degree.
In this embodiment, when a large amount of gas is accumulated in the space where the core 3 is located due to breakdown, the gas pushes the separator 6 to compress another space, and accordingly, the space where the core 3 is located becomes larger, so as to reduce the air pressure and avoid explosion, and in the moving process of the separator 6, the rod core 41 abuts against the explosion-proof plug 5 to separate from the separator 6, so that the electricity between the core 3 and the connection terminal 4 is disconnected, and the capacitor is blocked from continuing to work, so that explosion is avoided.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. An explosion-proof capacitor, comprising: the explosion-proof plug comprises a shell (1), an end cover (2), a core body (3), a connecting terminal (4) and an explosion-proof plug (5), wherein the core body (3) is arranged inside the shell (1), the end cover (2) is used for plugging an opening of the shell (1) and is provided with the connecting terminal (4), a vertical movable horizontal partition plate (6) is arranged inside the shell (1) to separate the core body (3) from the end cover (2) and form two independent spaces, one end of the connecting terminal (4) extends towards the inside of the shell (1) to form a rod core (41), a through hole (8) which is vertically arranged on the partition plate (6) is provided with a conductive metal piece (7) arranged in the through hole (8), the rod core (41) is matched and is connected with the metal piece (7), the explosion-proof plug (5) is arranged at the bottom of the partition plate (6) and covers the through hole (8), the explosion-proof plug (5) is provided with a conductive area (51) and an insulating area (52), the conductive area (51) is lapped with the metal piece (7) and is electrically connected with the core body (3), the insulating area (52) is opposite to the through hole (8), when the partition plate (6) pushes the hollow area (6) and can be separated from the explosion-proof plug (41) by the expansion plug (6), so that the electrical connection between the core body (3) and the connection terminal (4) is disconnected.
2. The explosion-proof capacitor according to claim 1, wherein the partition plate (6) is made of an insulating material, and a dynamic seal is formed between the outer edge of the partition plate (6) and the inner wall of the housing (1).
3. The explosion-proof capacitor according to claim 1, characterized in that the end of the rod core (41) is in the through hole (8) and spaced from the explosion-proof plug (5).
4. The explosion-proof capacitor according to claim 1, wherein the insulating region (52) of the explosion-proof plug (5) has a coverage area not smaller than the hollow region of the through hole (8).
5. The explosion-proof capacitor according to claim 1, characterized in that it comprises a plurality of metal pieces (7), and that the metal pieces (7) are circumferentially distributed on the inner wall of the through hole (8).
6. The explosion-proof capacitor according to claim 1, wherein an insulator (9) is further provided at the junction of the connection terminal (4) and the end cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070632.2U CN220796474U (en) | 2023-08-03 | 2023-08-03 | Explosion-proof capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070632.2U CN220796474U (en) | 2023-08-03 | 2023-08-03 | Explosion-proof capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220796474U true CN220796474U (en) | 2024-04-16 |
Family
ID=90658702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322070632.2U Active CN220796474U (en) | 2023-08-03 | 2023-08-03 | Explosion-proof capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220796474U (en) |
-
2023
- 2023-08-03 CN CN202322070632.2U patent/CN220796474U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |