CN2340074Y - Internal fuse protected dry self-recovering high-voltage capacitor element - Google Patents
Internal fuse protected dry self-recovering high-voltage capacitor element Download PDFInfo
- Publication number
- CN2340074Y CN2340074Y CN 98238427 CN98238427U CN2340074Y CN 2340074 Y CN2340074 Y CN 2340074Y CN 98238427 CN98238427 CN 98238427 CN 98238427 U CN98238427 U CN 98238427U CN 2340074 Y CN2340074 Y CN 2340074Y
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- Prior art keywords
- fuse
- voltage capacitor
- dry self
- capacitor
- capacitor element
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- Expired - Lifetime
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Abstract
The utility model relates to an internal fuse protected dry self-recovering high-voltage capacitor element, the voltage level is high, an arc is extinguished reliably and the operation is quitted quickly after the internal fuse protected dry self-recovering high-voltage capacitor element is punctured, the loss is little, and the service life is long. An element body is formed from a reeling element which comprises a metalized capacitor and an aluminum foil capacitor, a metal spraying layer, and an electrode lead wire. The element body is arranged in an outer shell, and the space between the element body and the outer shell resin is filled with resin. An inner fuse which is connected with the electrodes of the element in series is placed in the element. The utility model is characterized in that metal films which are arranged in the metalized capacitor have a plurality of series of structures, at least two inner series capacitors are formed, and the periphery of the inner fuse is filled with quartz sand.
Description
The utility model is the capacitor element that uses in the electric power system, particularly a kind of internal fuse protected dry self-healing high-voltage capacitor element
The coating of existing self-healing capacitor component mostly is aluminium film or zinc-aluminium film, when such element is made capacitor, is oil immersion or half dry type (waxdip) structure, and the problem of its existence is an easy firing; Because this capacitor must be put into hermetically sealed container, adopts pressure protective device more, when higher working voltage, the arcing distance is not enough, arc light may occur.Therefore, above-mentioned capacitor is unsuitable for the higher occasion use of security requirement.Occur a kind of dry-type self-healing capacitor element at home, it is the suit heat-shrink tube on capacitor element, to get rid of the air in the element.Because it can't the emptying air, coating is oxidation very easily, causes loss big, and the life-span is low; And after puncturing, can not be in time out of service reliably, cause temperature rise to raise, easily cause fire trouble.A kind of " self healing capacitor and manufacture method thereof " is provided in U.S. Pat 4509234, it has one deck oil film (vacuumizing the back immersion oil) on element body, to prevent the coating oxidation, reduce condenser capacity loss and capacity loss, said capacitor constitutes main capacitor by silver-zinc coating and polypropylene screen, roll an aluminium foil electric capacity in parallel with main capacitance in the main capacitance outside, in skeleton, be placed with the interior fuse of connecting and with resin-sealed with main capacitance, so that behind the capacitor breakdown, interior fuse failure makes capacitor out of service.Because its silver-zinc coating is a whole plate, makes its main capacitance that one group of pole plate only be arranged, and adds that it adopts single-layer medium, therefore, its electric pressure is low, can only be for below the 1000V.If it is use, necessary with a plurality of self healing capacitor guest performers as the high pressure occasion.Behind its guest performer, contact increases greatly, and reliability is reduced.In addition, during owing to fuse failure, from the weakness fracture of fuse, when overtension, the phenomenon of restriking will appear with at first.
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of electric pressure height is provided, punctures reliable arc extinguishing in back and internal fuse protected dry self-healing high-voltage capacitor element out of service rapidly and that loss is little, the life-span is long.
The utility model is such: it rolls element, gilding layer and contact conductor composed component body by what include metallization electric capacity and aluminium foil electric capacity, element body is placed in the enclosure, be filled with resin therebetween, in element, be placed with the interior fuse of connecting with this element electrode, it is characterized in that, metal film in the said metallization electric capacity is many string structures, constitutes at least two inner series electric capacity, is filled with quartz sand around the said interior fuse.
Internal fuse protected dry self-healing high-voltage capacitor element according to above-mentioned is respectively installed with shielding cap on upper and lower gilding layer, come off to prevent gilding layer.
Internal fuse protected dry self-healing high-voltage capacitor element according to above-mentioned is set with heat-shrink tube on contact conductor, to improve local discharging level and insulation property.
The utility model has the advantages that:
1, because the utility model has been realized the small components cascaded structure at element internal, the element rated voltage is brought up to more than the 1000V, thereby, reduced the series connection quantity of making power capacitor of this element, greatly improved the reliability of capacitor.
2, interior fuse is placed in the quartz sand with arc extinguishing effect, can guarantees the reliable disjunction under high voltage more of this element, the generation of the phenomenon that prevents to restrike and other electrical equipment is exerted an influence.
3, gilding layer there is protective effect, and can further reduces loss, minimizing capacitance loss, the anti-ability of shoving of raising; Also can improve local discharging level and insulation property.
The drawing explanation:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 rolls element (three inner series electric capacity) to launch schematic diagram in the utility model;
Fig. 3 is metalized film in the utility model (two an inner series electric capacity) structural representation.
Fig. 4 is a C portion amplification view among Fig. 1;
Fig. 5 is a D portion enlarged diagram among Fig. 1.
Provide embodiment of the present utility model below in conjunction with accompanying drawing:
Embodiment 1:
As Fig. 1,3,4, shown in 5, it have a skeleton 3 ', skeleton 3 ' on roll element 3, the said element 3 that rolls comprises metalized film 31, aluminium foil 32 and polypropylene screen 33, constitute main capacitance and aluminium foil electric capacity respectively, an electric isolating bar 31A is arranged on the coating of metalized film 31 wherein, making this coating is two sections pole plates, and the coating that is adjacent constitutes the pole plate of two groups of series connection, constitutes many string films, thereby form two inner series electric capacity, skeleton 3 ' in be placed with in fuse 4, and be filled with quartz sand 5, at skeleton 3 ' two ends with rubber cushion 1,6 seal, fuse 4 is connected on the electrode of this element in said, roll element 3 on, gilding layer 7 is arranged on the lower surface, make main capacitance and the parallel connection of aluminium foil electric capacity, and extraction electrode 10, suit heat-shrink tube 11 on contact conductor 10, above composed component body is soaked with one deck oil film on element body, be set with shielding cap 8 on gilding layer 7, again above element body is placed in the shell 9, is filled with resin 2 therebetween.
Embodiment 2:
As Fig. 1,2,4, shown in 5, it have a skeleton 3 ', skeleton 3 ' on roll element 3, the said element 3 that rolls comprises metalized film 31, aluminium foil 32 and polypropylene screen 33, constitute main capacitance and aluminium foil electric capacity respectively, wherein the coating on the adjacent metal film 31 has an electric isolating bar 31A who staggers respectively, making coating is two sections pole plates, be that metalized film is many string structures, make the coating on the adjacent metal film 31 form three groups of pole plates of connecting, thereby form three inner series electric capacity, skeleton 3 ' in be placed with in fuse 4, and be filled with quartz sand 5, use rubber cushion 1 at skeleton 3 ' two ends, 6 seal, fuse 4 is connected on the electrode of this element in said, roll element 3 on, gilding layer 7 is arranged on the lower surface, make main capacitance and the parallel connection of aluminium foil electric capacity, extraction electrode lead-in wire 10 is set with heat-shrink tube 11 on contact conductor 10 on gilding layer 7, to improve insulation and local discharging level, above composed component body, said element body is soaked in oil after vacuumizing, and to form oil film on the surface, is set with shielding cap 8 on gilding layer 7, again above element body is placed in the shell 9, is filled with resin 2 therebetween.
Claims (4)
1, a kind of internal fuse protected dry self-healing high-voltage capacitor element; it rolls element, gilding layer and contact conductor composed component body by what include metallization electric capacity and aluminium foil electric capacity; element body is placed in the enclosure; be filled with resin therebetween; be placed with the interior fuse of connecting with this element electrode in element, it is characterized in that, the metalized film in the said metallization electric capacity is many string structures; constitute at least two inner series electric capacity, be filled with quartz sand around the said interior fuse.
2, internal fuse protected dry self-healing high-voltage capacitor element according to claim 1 is characterized in that, is respectively installed with shielding cap on upper and lower gilding layer.
3, internal fuse protected dry self-healing high-voltage capacitor element according to claim 1 and 2 is characterized in that, is set with heat-shrink tube on contact conductor.
4, internal fuse protected dry self-healing high-voltage capacitor element according to claim 1 is characterized in that, said interior fuse is placed in the skeleton that rolls element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98238427 CN2340074Y (en) | 1998-07-29 | 1998-07-29 | Internal fuse protected dry self-recovering high-voltage capacitor element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98238427 CN2340074Y (en) | 1998-07-29 | 1998-07-29 | Internal fuse protected dry self-recovering high-voltage capacitor element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2340074Y true CN2340074Y (en) | 1999-09-22 |
Family
ID=33986011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98238427 Expired - Lifetime CN2340074Y (en) | 1998-07-29 | 1998-07-29 | Internal fuse protected dry self-recovering high-voltage capacitor element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2340074Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064107A (en) * | 2019-12-18 | 2020-04-24 | 芜湖伊莱特电气有限公司 | Solid insulation type vacuum ring main unit outdoor shell |
-
1998
- 1998-07-29 CN CN 98238427 patent/CN2340074Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064107A (en) * | 2019-12-18 | 2020-04-24 | 芜湖伊莱特电气有限公司 | Solid insulation type vacuum ring main unit outdoor shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |