CN205092149U - Self -healing low pressure power capacitor - Google Patents
Self -healing low pressure power capacitor Download PDFInfo
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- CN205092149U CN205092149U CN201520779071.6U CN201520779071U CN205092149U CN 205092149 U CN205092149 U CN 205092149U CN 201520779071 U CN201520779071 U CN 201520779071U CN 205092149 U CN205092149 U CN 205092149U
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- shell
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- overvoltage protector
- capacity cell
- capacitor
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Abstract
The utility model discloses a self -healing low pressure power capacitor, including the shell, the inside hollow structure that is of shell, the surface coating of shell has metallized film, and the inside evenly distributed of shell has capacity cell, and capacity cell's surface winding has the connecting wire, and capacity cell's centre is provided with overvoltage protector, has seted up above the overvoltage protector and has answered the breakpoint, and overvoltage protector connects surface coating 0. The condenser adopts metallized film technique manufacturing, and the mode that adopts the coating by vaporization under the high vacuum state is at the extremely thin zinc -aluminium composite bed that has good self -healing performance of the dual coating by vaporization of polypropylene membrane, adopts fire -retardant nitrogen gas as protective gas, has realized condenser insulating medium's characteristic, has ensured the security performance of condenser, and is small, light in weight, and the inflatable environment -friendly has increased the flexibility of use, and the modern design is a fine innovation scheme, has very much the marketing prospect.
Description
Technical field
The utility model relates to electric component, particularly relates to a kind of self-healing low-voltage power capacitor.
Background technology
Serve as the smothing filtering of rectifier in electronic equipment, power supply and decoupling, the bypass of AC signal, the electronic component of the AC coupled of AC-DC Circuit etc. is called capacitor.Capacitor can produce in use and shove, the voltage difference when size of shoving drops into line impedance and capacitor between capacitor and power supply is relevant, shoving in extreme situations can rated capacitor electric current more than 100 times, so huge shoving can have a huge impact the life-span of capacitor, also can produce interference to electrical network, therefore people always wish that shoving of capacitor is the smaller the better.
At present, along with the continuous progress of society, electrically, mechanization develops rapidly, and commercial power constantly increases, and entreprise cost also increases thereupon, and the quality of electrical network starts to occur obvious decline.In order to improve power grid quality and consumer electronics safety further, many enterprises bring into use self-healing reactive-load compensation capacitor, self-healing reactive-load compensation capacitor adopts single-layer polypropylene film as medium, the thin metal of its surperficial evaporation one deck is as conductive electrode, when applying too high voltage, polypropylene screen electricity weakness will be breakdown, breakdown point impedance obviously reduces, current density sharply increases, the coat of metal is made to produce high heat, metallic conductor around breakdown point evaporates loss rapidly, forms coat of metal clear area, and breakdown point recovers insulation automatically.The capacitor of self-healing is divided into dry type and oil immersed type.Requirement for the capacitor of self-healing is that capacitor is disconnected from the circuit automatically when capacitor failure, can not there is blast, to catch fire etc. dangerous.Capacitor when puncturing always with amount of heat and gas, make the pressure increase of capacitor protector, dry-type capacitor due to its Embedding Material be solid, gas not easily overflows, thus there is hidden danger on fire, then there is the danger of leakage of oil in oil immersed type capacitor, simultaneously also can to electric equipment and environment, and the self healing capacitor of these two kinds of forms all to there is volume large, the shortcomings such as Heavy Weight, the life-span of product is also shorter, and Practical Performance is not good, so there is deficiency.
In sum, for the defect of prior art, a kind of self-healing low-voltage power capacitor of special needs, to solve the deficiencies in the prior art.
Utility model content
For in prior art to the deficiency that capacitor in use exists; and in the process of reality, cause very large impact; the utility model proposes a kind of self-healing low-voltage power capacitor; capacitor adopts the manufacture of metallized film technology; under high vacuum state, adopt the mode of evaporation at the very thin zinc-aluminium composite bed with good self-healing performance of the two sides evaporation of polypropylene screen; adopt fire-retardant nitrogen as protective gas; achieve the characteristic of capacitor insulation medium; ensure that the security performance of capacitor, address the deficiencies of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of self-healing low-voltage power capacitor; comprise shell; enclosure is hollow structure; the surface spraying of shell has metallized film; the inner homogeneous of shell is distributed with capacity cell, and the surface wrap of capacity cell has connecting line, and the centre of capacity cell is provided with overvoltage protector; offer above overvoltage protector and answer breakpoint, overvoltage protector connects power output terminal.
The discharge resistance be fixedly connected with is offered in the bottom of shell described in the utility model.
Stator is provided with between power output terminal described in the utility model and overvoltage protector.
Further, the shape of described shell is cylindrical.
The beneficial effects of the utility model are: this product structure is simple, easy to make, capacitor adopts the manufacture of metallized film technology, under high vacuum state, adopt the mode of evaporation at the very thin zinc-aluminium composite bed with good self-healing performance of the two sides evaporation of polypropylene screen, adopt fire-retardant nitrogen as protective gas, achieve the characteristic of capacitor insulation medium, ensure that the security performance of capacitor, volume is little, lightweight, gas-filled type environment-friendly type, long service life, add the flexibility of use, novel in design, it is a kind of well innovation scheme, there is very much marketing prospect.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of a kind of self-healing low-voltage power capacitor of the utility model.
100-shell in figure, 110-stator, 120-connecting line, 130-overvoltage protector, 140-capacity cell, 150-power output terminal, 160-discharge resistance.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1, a kind of self-healing low-voltage power capacitor; comprise shell 100; shell 100 inside is hollow structure; 100 surface sprayings of shell have metallized film; the inner homogeneous of shell 100 is distributed with capacity cell 140, and the surface wrap of capacity cell 140 has connecting line 120, and the centre of capacity cell 140 is provided with overvoltage protector 130; overvoltage protector 130 offers above and answers breakpoint, and overvoltage protector 130 connects power output terminal 150.
And the bottom of shell 100 offers the discharge resistance 160 be fixedly connected with.Stator 110 is provided with between power output terminal 150 and overvoltage protector 130.The shape of shell 100 is cylindrical.
Operation principle of the present utility model is: capacitor element under applied voltage effect, because the existence of the weakness such as the impurity in medium or air gap or development cause dielectric breakdown to form turning circuit; Then near turning circuit place very among a small circle in metal level in flow through the very steep pulse current in a forward position.Electric current on contiguous breakdown point place metal level rises suddenly, the distribution that is inversely proportional to by its distance from breakdown point.Carve t in up time, radius is the fusing point that the temperature of the region inner metal layer of Rt reaches metal, so metal molten within the scope of this produce electric arc.This electric current causes capacitive energy to discharge, and in arc road, temperatures at localized regions raises suddenly, and pressure increases suddenly.Along with the effect of discharge energy, radius is that the region inner metal layer explosive vaporization of Rt is also with splash.In the process that this zone radius increases, electric arc is pulled off, and metal is dispelled and is subject to oxidation and cooling, destroys conductive path, forms a round insulation region of losing metal level centered by breakdown point at dielectric surface.The self-healing procedure of capacitor terminates.Capacitor adopts the manufacture of metallized film technology, under high vacuum state by the mode of evaporation at the very thin zinc-aluminium composite bed of polypropylene film two sides evaporation, there is good self-healing property very.
The utility model is effective is: structure is simple; easy to make; capacitor adopts the manufacture of metallized film technology; under high vacuum state, adopt the mode of evaporation at the very thin zinc-aluminium composite bed with good self-healing performance of the two sides evaporation of polypropylene screen; adopt fire-retardant nitrogen as protective gas; achieve the characteristic of capacitor insulation medium; ensure that the security performance of capacitor; volume is little, lightweight, gas-filled type environment-friendly type; add the flexibility of use; modern design, is a kind of well innovation scheme, has very much marketing prospect.
The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a self-healing low-voltage power capacitor; comprise shell; it is characterized in that: the surface spraying of shell has metallized film; the inner homogeneous of shell is distributed with capacity cell; the surface wrap of capacity cell has connecting line; the centre of capacity cell is provided with overvoltage protector, offers and answer breakpoint above overvoltage protector, and overvoltage protector connects power output terminal.
2. a kind of self-healing low-voltage power capacitor according to claim 1, is characterized in that: the bottom of described shell offers the discharge resistance be fixedly connected with.
3. a kind of self-healing low-voltage power capacitor according to claim 1, is characterized in that: be provided with stator between described power output terminal and overvoltage protector.
4. a kind of self-healing low-voltage power capacitor according to claim 1, is characterized in that: the shape of described shell is cylindrical.
5. a kind of self-healing low-voltage power capacitor according to claim 1, is characterized in that: described enclosure is hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779071.6U CN205092149U (en) | 2015-10-10 | 2015-10-10 | Self -healing low pressure power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779071.6U CN205092149U (en) | 2015-10-10 | 2015-10-10 | Self -healing low pressure power capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205092149U true CN205092149U (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520779071.6U Expired - Fee Related CN205092149U (en) | 2015-10-10 | 2015-10-10 | Self -healing low pressure power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205092149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161296A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Self-healing low-voltage electric power capacitor |
-
2015
- 2015-10-10 CN CN201520779071.6U patent/CN205092149U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161296A (en) * | 2015-10-10 | 2015-12-16 | 无锡德沃精工设备有限公司 | Self-healing low-voltage electric power capacitor |
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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: 20160316 Termination date: 20161010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |