CN203941811U - Capacitor - Google Patents
Capacitor Download PDFInfo
- Publication number
- CN203941811U CN203941811U CN201420134652.XU CN201420134652U CN203941811U CN 203941811 U CN203941811 U CN 203941811U CN 201420134652 U CN201420134652 U CN 201420134652U CN 203941811 U CN203941811 U CN 203941811U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- metal shell
- cover plate
- sealing
- sealing ring
- 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.)
- Expired - Fee Related
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- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model discloses a kind of capacitor, comprise metal shell, cover plate and capacitor core, between metal shell and capacitor core, be filled with dielectric, dielectric wraps capacitor core completely, metal shell inside is provided with the inwardly protruding for supporting cover plate, it is characterized in that: on described cover plate, be provided with the sealing resin of one deck for seal cover board, be provided with the sealing ring being sealed and matched with metal shell on the edge of sealing resin, sealing ring and sealing resin closely cooperate.Sealing ring of the present utility model is sealing metal box completely; good seal performance; the utility model can be worked in liquid; insulating cement fat is flexible; there is good buffering flame retardant effect; and can sealed insulation fuse, play the effect of explosion-proof, leakage-preventing and capacitor for voltage protection, extend capacitor life-span.
Description
Technical field
The utility model relates to electric installation field, and more particularly, it relates to a kind of capacitor.
Background technology
At present, electric capacity is called in the common letter of existing capacitor, is " filling electric container ", is a kind of device that holds electric charge.Electric capacity is one of electronic component of a large amount of uses in electronic equipment, is widely used in handing over every straight-through in circuit, coupling, bypass, filtering, resonant tank, power conversion, the aspects such as control.Between the metal shell of existing capacitor and electric capacity axle core, there is dielectric, between insulation barrier and external environment, have one deck cover plate, for sealed capacitor inside, prevent from contacting with external environment, play sealing function.Once this capacitor expanded by heating or cooling contraction, will there is gap with metal shell in cover plate so, capacitor can not be worked because of poor sealing in liquid, and operational environment is restricted, and capacitor sealing does not with great difficulty make capacitor damage, reduce useful life, and dielectric do not have good buffering effect yet, do not possess elasticity, if there is gas expansion, excessive to metal shell pressure, easily cause metal shell to break.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of explosive-proof sealed performance good capacitor.
For achieving the above object, the utility model provides following scheme: a kind of capacitor, comprise metal shell, cover plate and capacitor core, between metal shell and capacitor core, be filled with dielectric, dielectric wraps capacitor core completely, metal shell inside is provided with the projection for supporting cover plate, metal shell coordinates with cover plate for sealing, on cover plate, be provided with the pad of anchor leg and positive and negative electrode, on described cover plate, be provided with the sealing resin of one deck for seal cover board, on the edge of sealing resin, be provided with the sealing ring being sealed and matched with metal shell, sealing ring and sealing resin closely cooperate, described metal shell top end is provided with and coordinates aduncate arc section with sealing ring, described dielectric is the insulating cement fat of heat-proof combustion-resistant.
By adopting technique scheme, metal inside projection is supporting cover plate, cover plate and metal shell are sealed and matched, reach the effect of sealing, sealing ring is placed on the cover board, sealing resin is poured into a mould on the cover board, can realize good sealing, gap between energy seal weld contact and cover plate, sealing resin has elastic performance, if capacitor expanded by heating, sealing resin can absorb the pressure expanding, can reduce the pressure of metal shell, sealing ring has good elastic performance, when after the distortion of capacitor case expanded by heating or cooling contraction distortion, sealing ring also can with its sealing that closely cooperates, make very close to each other between the two, capacitor for voltage protection, realize dual-seal, make the utility model can be in liquid environment trouble free service, increase the capacitor scope of application, increase the service life, metal shell and sealing ring can closely wrap up cooperation, sealing effectiveness is better, further capacitor for voltage protection, prevent that capacitor from infiltrating through liquid, increase the service life.And insulating cement fat sealed envelope insulation core completely, the position of fixed insulation fuse, prevents that capacitor core from entering fluid, and dielectric good sealing effect, makes the utility model can adapt to liquid environment, also can trouble free service in liquid.Insulating cement fat itself has good elasticity; in the time that capacitor core heating volatilizes gas extrusion insulating cement fat; just well absorption pressure of energy; reduce the pressure of metal shell; prevent that capacitor from occurring because of capacitor internal gas extrusion generation explosion damaged, insulating cement fat has good thermal endurance, can prevent the pyrophoricity accident causing because of capacitor core high temperature; play capacitor for voltage protection, extend the effect of capacitor life-span.
The utility model is further set to: gapped between described insulating cement fat and cover plate.
By adopting technique scheme; when capacitor internal Yin Gaowen produces gas and expands; sealed cavity can play compensator or trimmer pressure; the space of expansion is provided to insulating cement fat; reduce the pressure to metal shell and cover plate; cover sheet and metal shell be because expansion is damaged, and extends capacitor useful life.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model capacitor.
Reference numeral: 1, capacitor core; 2, fluid sealant fat; 3, metal shell; 4, sealing ring; 5, sealing resin; 6, lead-out wire; 7, pad; 8, arc section; 9, cover plate.
Embodiment
With reference to Fig. 1, the utility model capacitor embodiment is described further.
A kind of capacitor comprises metal shell 3, cover plate 9 and capacitor core 1, between metal shell 3 and capacitor core 1, be filled with dielectric, dielectric wraps capacitor core 1 completely, metal shell 3 inside are provided with the projection for supporting cover plate 9, metal shell 3 is sealed and matched with cover plate 9, on described cover plate 9, be provided with the sealing resin 5 of one deck for seal cover board 9, on the edge of sealing resin 5, be provided with the sealing ring 4 being sealed and matched with metal shell 3, sealing ring 4 closely cooperates with sealing resin 5.Metal shell 3 internal protrusion are supporting cover plate 9, cover plate 9 is provided with the pad 7 of anchor leg 6 and positive and negative electrode, sealing resin 5 is cast on cover plate 9, can realize good sealing, gap between energy seal weld contact 7 and cover plate 9, if capacitor internal expanded by heating, sealing resin 5 can absorb the pressure expanding, sealing resin 5 contraction distortions, can reduce the pressure of metal shell 3.Sealing ring 4 has good elastic performance; after capacitor is cooling; the cooling contraction of insulating resin 5, sealing ring 4 is elastic telescopic effectively, make sealing ring 4 can and insulating resin 5 sealing that closely cooperates all the time; and insulating resin 5 good sealing effects; make this capacitor can adapt to liquid environment, also can trouble free service in liquid, capacitor for voltage protection; realize dual-seal, increase capacitor useful life.Sealing ring 4 can be mulit-lip seal ring, multiple sealing lips can with metal shell 3 close contacts, multi-sealed, effect of easing stress is good, reaches effective sealing, leakage-preventing effect.
Metal shell 3 top ends are provided with the arc section 8 that curves inwardly coordinating with sealing ring 4.Metal shell 3 and sealing ring 4 can closely wrap up cooperation, and sealing effectiveness is better, and further capacitor for voltage protection, prevents that capacitor from entering liquid or air, increases the service life.
Dielectric is the insulating cement fat 2 of heat-proof combustion-resistant.Insulating cement fat 2 is sealed envelope insulation core 1 completely, the position of fixed insulation fuse 1, prevent that capacitor core 1 from entering fluid, also can make the operational environment of capacitor core 1 seal completely, reach the state of vacuum, make capacitor core 1 use of also working in liquid, insulating cement fat 2 itself has good elasticity, in the time that capacitor core 1 heating volatilizes gas extrusion insulating cement fat 2, insulating cement fat 2 is well absorption pressure of energy just, can elastic shrinkage, reduce the pressure of metal shell 3, prevent that capacitor is damaged because explosion occurs in internal gas extruding, after capacitor is cooling, insulating cement fat 2 can strain arrive original state, remain the sealing state with metal shell 3 and capacitor core 1, the inner many places of insulating cement fat 2 are distributed with multiple inert gas air bags, these air bags can be in the time of capacitor internal gas extrusion, effectively absorb extruding force, play the effect of protection and buffering to insulating cement fat 2 and metal shell 3, avoid metal shell 3 explosion to occur because of extruding.Insulating cement fat 2 has good thermal endurance, can prevent from the pyrophoricity accident that causes because of capacitor core 1 high temperature from playing capacitor for voltage protection, extends the effect of capacitor life-span.
Gapped between insulating cement fat 2 and cover plate 9.When capacitor internal Yin Gaowen produces gas and expands; extruding insulation glue fat 2; sealed cavity can play the effect of compensator or trimmer pressure; the space of expansion is provided to insulating cement fat 2; reduce the pressure to metal shell 3 and cover plate 9; cover sheet 9 and metal shell 3 be because expansion is damaged, and extends capacitor useful life.
Claims (2)
1. a capacitor, comprise metal shell, cover plate and capacitor core, between metal shell and capacitor core, be filled with dielectric, dielectric wraps capacitor core completely, metal shell inside is provided with the projection for supporting cover plate, metal shell coordinates with cover plate for sealing, on cover plate, be provided with the pad of anchor leg and positive and negative electrode, it is characterized in that: on described cover plate, be provided with the sealing resin of one deck for seal cover board, on the edge of sealing resin, be provided with the sealing ring being sealed and matched with metal shell, sealing ring and sealing resin closely cooperate, described metal shell top end is provided with the aduncate arc section coordinating with sealing ring, described dielectric is to have flexible fire retardant insulating glue fat.
2. capacitor according to claim 1, is characterized in that: gapped between described insulating cement fat and cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134652.XU CN203941811U (en) | 2014-03-24 | 2014-03-24 | Capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134652.XU CN203941811U (en) | 2014-03-24 | 2014-03-24 | Capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941811U true CN203941811U (en) | 2014-11-12 |
Family
ID=51861110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134652.XU Expired - Fee Related CN203941811U (en) | 2014-03-24 | 2014-03-24 | Capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449084A (en) * | 2016-10-12 | 2017-02-22 | 安徽瀚宇电气有限公司 | Capacitor |
| WO2017049812A1 (en) * | 2015-09-22 | 2017-03-30 | 上海皓月电气有限公司 | High-safety capacitor provided with metal housing |
-
2014
- 2014-03-24 CN CN201420134652.XU patent/CN203941811U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017049812A1 (en) * | 2015-09-22 | 2017-03-30 | 上海皓月电气有限公司 | High-safety capacitor provided with metal housing |
| CN106449084A (en) * | 2016-10-12 | 2017-02-22 | 安徽瀚宇电气有限公司 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20170324 |