CN203026369U - Capacitor with explosion-proof function and applied to direct-current chain - Google Patents
Capacitor with explosion-proof function and applied to direct-current chain Download PDFInfo
- Publication number
- CN203026369U CN203026369U CN 201220664230 CN201220664230U CN203026369U CN 203026369 U CN203026369 U CN 203026369U CN 201220664230 CN201220664230 CN 201220664230 CN 201220664230 U CN201220664230 U CN 201220664230U CN 203026369 U CN203026369 U CN 203026369U
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- Prior art keywords
- capacitor
- insulating sleeve
- direct
- insulating case
- lower insulating
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- Expired - Fee Related
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Abstract
The utility model discloses a capacitor with an explosion-proof function and applied to a direct-current chain. The capacitor comprises a cylindrical shell and a cover body, wherein the shell is internally provided with an upper insulating sleeve and a lower insulating sleeve; a cylinder is formed by the upper insulating sleeve, the lower insulating sleeve and an insulating layer; a core set is arranged among the upper insulating sleeve, the lower insulating sleeve and the insulating layer; and the outer part of the core set is sealed by a filling material. According to the capacitor, an epoxy resin filling material is filled among the upper insulating sleeve, the lower insulating sleeve and the insulating layer to seal cores, so that the cores are protected not to be influenced by external moist gas; the cores adopt double layers of metalized square safety membranes; each layer of the metalized square safety membrane is formed by grid regions with the same size; and a fuse capable of bearing certain current is arranged at the edge of each grid so as to guarantee that the capacitor does not have an explosion phenomenon of a common metalized membrane winding core in a utilization process.
Description
Technical field
The utility model relates to a kind of capacitor, is specifically related to a kind of direct-current chain and uses capacitor.
Background technology
During as the power supply of inverter, because this DC power supply need to link by dc bus and inverter, this supply power mode is also referred to as " DC-Link " at direct current.Because inverter needs to ask for effective value and the very high pulsating current of amplitude to " DC-Link ", can make inverter be difficult to bear at the very high pulsating voltage of " DC-Link " upper generation.For this reason, need to carry out " support " to " DC-Link ", to guarantee the power supply quality of " DC-Link ".
In most of the cases, the element of support " DC-Link " is capacitor.The effect of " DC-Link " capacitor is mainly to absorb to come from the high amplitude pulsating current that inverter is asked for to " DC-Link ", stop it to produce high amplitude pulsating voltage in the impedance of " DC-Link ", make the mains fluctuations of inverter end remain on allowed band.Second effect of " DC-Link " capacitor is exactly to prevent from coming from the voltage overshoot of " DC-Link " and instantaneous overvoltage to the impact of inverter.
The utility model content
The purpose of this utility model is to provide the capacitor that a kind of direct-current chain with explosion prevention function that can eliminate the gas due to voltage spikes induced electricity that stray inductance produces is used.
The technical solution of the utility model realizes in the following manner: a kind of direct-current chain with explosion prevention function is used capacitor, comprise cylindrical housings and lid, be provided with insulating case and lower insulating case in housing, upper insulating case, lower insulating case and insulating barrier form a cylinder, be provided with the core group between upper insulating case, lower insulating case and insulating barrier, the core group is outer to be sealed by potting compound.
Described core group is comprised of 1 ~ 3 fuse.
Described fuse adopts double level metallization pattern safety diaphragm to form.
In the utility model, adopt epoxy resin perfusion material with the fuse encapsulation between upper and lower insulating case, be not subjected to the impact of extraneous wet gas with the protection fuse; Fuse adopts double level metallization pattern safety diaphragm, every layer of metal metallized safety film is comprised of onesize grid regions, the grid edge is the fuse that can tolerate certain electric current, guarantees that the explosion phenomenon that common metal film winding core occurs does not in use appear in capacitor.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that schematic diagram is looked on the left side of Fig. 1.
Fig. 3 is the schematic top plan view of Fig. 1.
Fig. 4 is the safeguard membrane structural schematic diagram of fuse.
Embodiment
As shown in drawings, a kind of direct-current chain with explosion prevention function is used capacitor, comprise cylindrical housings 1 and lid 7, be provided with insulating case 8 and lower insulating case 2 in housing 1, it is characterized in that: upper insulating case 8, lower insulating case 2 and insulating barrier 3 form a cylinder, be provided with core group 4 between upper insulating case 8, lower insulating case 2 and insulating barrier 3, core group 4 is outer by potting compound 5 sealings.
In the utility model, upper insulating case 5 is annular, can guarantee the insulation between fuse edge and metal shell 1.Adopt the tight fit form between shell 1 and lid 7, directly press the opening part that lid 7 is pressed in shell 1.
Described core group 4 is comprised of 1 ~ 3 fuse.
Described fuse adopts double level metallization pattern safety diaphragm to form, and the grid edge is the fuse that can tolerate certain electric current, can guarantee that the explosion phenomenon of common metal film winding core appearance does not in use appear in capacitor.
Claims (3)
1. the direct-current chain with explosion prevention function is used capacitor, comprise cylindrical housings (1) and lid (7), housing (is provided with insulating case (8) and lower insulating case (2) in 1, it is characterized in that: upper insulating case (8), lower insulating case (2) and insulating barrier (3) form a cylinder, be provided with core group (4) between upper insulating case (8), lower insulating case (2) and insulating barrier (3), core group (4) is outer to be sealed by potting compound (5).
2. the capacitor used of the direct-current chain with explosion prevention function according to claim 1, it is characterized in that: described core group (4) is comprised of 1 ~ 3 fuse.
3. the capacitor used of the direct-current chain with explosion prevention function according to claim 2, it is characterized in that: described fuse adopts double level metallization pattern safety diaphragm to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220664230 CN203026369U (en) | 2012-12-06 | 2012-12-06 | Capacitor with explosion-proof function and applied to direct-current chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220664230 CN203026369U (en) | 2012-12-06 | 2012-12-06 | Capacitor with explosion-proof function and applied to direct-current chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026369U true CN203026369U (en) | 2013-06-26 |
Family
ID=48650335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220664230 Expired - Fee Related CN203026369U (en) | 2012-12-06 | 2012-12-06 | Capacitor with explosion-proof function and applied to direct-current chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026369U (en) |
-
2012
- 2012-12-06 CN CN 201220664230 patent/CN203026369U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20211206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |