CN206574611U - A kind of explosion prevention capacitor - Google Patents
A kind of explosion prevention capacitor Download PDFInfo
- Publication number
- CN206574611U CN206574611U CN201720125564.7U CN201720125564U CN206574611U CN 206574611 U CN206574611 U CN 206574611U CN 201720125564 U CN201720125564 U CN 201720125564U CN 206574611 U CN206574611 U CN 206574611U
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- housing
- electrode
- top cover
- explosion prevention
- prevention capacitor
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Abstract
The utility model discloses a kind of explosion prevention capacitor, including cylindrical housings, two are arranged on the electrode bar in housing and capacitance core of the volume on the outside of it by axis of two electrode bars along housing axial direction, electrolyte is filled with the housing, the bottom of the electrode bar is fixed on the bottom of the housing, columned top cover is arranged with the case top, the top of the top cover is passed at the top of the electrode bar and one group of binding post is coupled, the bottom outer-edge of the top cover is provided with a circle chimb, the chimb point is welded on the inwall of the housing, the electrode bar is divided into electrode epimere and electrode hypomere, the embedding hole of mouth is opened up at the top of the electrode hypomere, the bottom of the electrode epimere is provided with the abaculus chimeric with embedding hole.It has certain cushioning effect to the air pressure change in electric capacity housing, electric capacity is not easy because internal pressure is excessive and explodes.
Description
Technical field
The utility model is related to electric power component, more particularly to a kind of explosion prevention capacitor.
Background technology
It is to improve the power factor of system, reduce reactive loss using capacitor in low-voltage power system.Electric capacity
Device is damaged in the process of running or even the accident of blast happens occasionally, and gently then damages controller switching equipment, heavy then destroy building
And cause fire.
Those skilled in the art understands that the main cause of capacitor blast is：Capacitor typically has multiple electric capacity in parallel
Composition, when the electric capacity in capacitor is breakdown or during electric capacity inner member aging, its work can produce Joule heat, in such case
Under, the working time of electric capacity is longer, and its internal heat produced is more.But an electric capacity has excessive leakage current or punctured
When, capacitor produces very big heat energy within a very short time, and these heat energy produce oil or other dielectric breakdowns in capacitor
Substantial amounts of gas, at this moment the housing of capacitor, which is held, can't stand this pressure acutely increased, cause housing failure or even blast.
Utility model content
The purpose of this utility model is to provide a kind of explosion prevention capacitor, and it has certain to the air pressure change in electric capacity housing
Cushioning effect, makes electric capacity be not easy because internal pressure is excessive and explodes.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of explosion prevention capacitor, including cylindrical housings, two along housing axial direction be arranged on the electrode bar in housing with
And electrolyte, the bottom of the electrode bar are filled with capacitance core of the volume on the outside of it, the housing by axis of two electrode bars
End is fixed on to be arranged with the top of columned top cover, the electrode bar in the bottom of the housing, the case top and passed
The top of the top cover simultaneously couples one group of binding post, and the bottom outer-edge of the top cover is provided with a circle chimb, the chimb spot welding
On the inwall of the housing, the electrode bar, which is divided at the top of electrode epimere and electrode hypomere, the electrode hypomere, opens up mouth
Embedding hole, the bottom of the electrode epimere is provided with the abaculus chimeric with embedding hole.
By using above-mentioned technical proposal, when electric capacity is breakdown or electric capacity internal components aging during, enclosure interior
Produce a large amount of gases and flatulence occur, air pressure is raised in housing, and top cover is by upward in the presence of housing inner high voltage gas
Power disconnects the solder joint between chimb and housing, and top cover upward sliding, bellows is gradually stretched, the electrode epimere of electrode bar with
Top cover upward sliding, embedding hole is separated with abaculus, so that electrode bar disconnects, capacitance damage no longer works, the heat in electric capacity
It will gradually reduce, the reaction of electrode bar and electrolyte stops, and then make the air pressure in electric capacity stop rising, or even air pressure is
Reduction, so that the possibility that the situation for reducing electric capacity blast is produced.
The utility model is further arranged to：The embedding hole is set in infundibulate, and the abaculus includes conus portion and solid
It is scheduled on the cylindrical portion of conus portion bottom.
By using above-mentioned technical proposal, during electrode epimere is moved up, the conus portion of abaculus is separated with embedding hole, embedding
The cylindrical portion of block is slided along embedding hole inwall, and the air pressure in housing is smaller, and the inwall of the cylindrical portion in embedding hole still with embedding hole is fitted, electrode
Rod is acted on still in conducting, and electric capacity still can be with normal work；Deviate from even if voltage crosses ambassador's cylindrical portion out of embedding hole, stop in electric capacity
Only work and when its temperature is reduced to normality, can press at the top of top cover, the cylindrical portion of abaculus is stretched into the embedding holes of embedding Kong Bingyu
Inwall is fitted, and electric capacity is still continuing with.
The utility model is further arranged to：The bottom of the cylindrical portion is set into downwardly convex arc.
By using above-mentioned technical proposal, facilitate cylindrical portion to stretch into embedding hole and be not easy to occur friction with embedding hole inwall and go out
Now damage.
The utility model is further arranged to：The bellows of increase sealing is arranged with outside the top of the housing, it is described
The top outer rim of the top cover, bottom is fixed at the top of bellows to be fixed on the outer wall of the housing.
By using above-mentioned technical proposal, increase top cover and the sealing of housing junction, with top cover relative to housing
Slide up and down, bellows is stretched, it is to avoid during top cover is moved, gap turnover of the gas between top cover and housing
So as to ensure sealing.
The utility model is further arranged to：The bellows is made up of metal material.
By using above-mentioned technical proposal, metal material has certain rigidity, it is not easy to deform, so that electric capacity
In course of normal operation, top cover is not easy band moving electrode epimere and moves up and down and cause electrode bar to disconnect, to ensure electric capacity just
Often work.
The utility model is further arranged to：The top margin inner edge of the housing is provided with the rib cooperated with chimb.
By using above-mentioned technical proposal, it is not easy again and shell while side wall of the top cover along housing is slided up and down
Body is disengaged.
In summary, the utility model has the advantages that：There is certain delay to the air pressure change in electric capacity housing
Punching is acted on, and electric capacity is not easy because internal pressure is excessive and explodes；Electrode bar is easy for being pulled off under relatively low air pressure,
Electrode bar is disconnected, and electric capacity no longer works, and the heat in electric capacity also will be reduced gradually, the reaction of electrode bar and electrolyte stops,
Reduce the possibility that the situation of electric capacity blast is produced.
Brief description of the drawings
Fig. 1 is the axial semi-cutaway of explosion prevention capacitor；
Fig. 2 is the axial semi-cutaway of explosion prevention capacitor under top cover raised state；
Fig. 3 is the sectional view in explosion prevention capacitor vertical axial direction.
Reference：1st, housing；11st, rib；2nd, electrode bar；21st, electrode epimere；22nd, electrode hypomere；23rd, embedding hole；24、
Abaculus；241st, conus portion；242nd, cylindrical portion；3rd, capacitance core；31st, conducting strip；32nd, dielectric plastic piece；4th, insulation sleeve；5th, terminals
Son；6th, cavity；7th, top cover；71st, chimb；8th, bellows；9th, wire.
Embodiment
The utility model is described further referring to the drawings.Wherein identical parts identical reference table
Show.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used below in description refer to accompanying drawing 1
In direction, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements geometric center
Direction.
A kind of explosion prevention capacitor, as shown in Figures 1 to 3, including cylinder housing 1, be set in the top of housing 1 top cover 7,
Two are arranged on electrode bar 2 in housing 1 along the axial direction of housing 1 and are that axis is rolled up on the outside of it with two electrode bars 2
Capacitance core 3.
Wherein, housing 1 be aluminum housing 1, top cover 7 it is cylindrical setting and its bottom be set in housing 1；Capacitance core
3 include the dielectric plastic piece 32 that two conducting strips 31 and two panels are arranged alternately with conducting strip 31, and the innermost layer of capacitance core 3 is Jie
Matter plastic sheet 32, outermost layer are conducting strip 31；It is provided between capacitance core 3 and top cover 7 in cavity 6, housing 1 filled with electrolysis
Liquid；Electrode bar 2 is the insulation sleeve 4 that beryllium copper electrode bar 2, its outer cover have been provided with insulating effect, and the bottom of electrode bar 2 is fixed on shell
The bottom of body 1, and two electrode bars 2 connect by being arranged in the wire 9 of the bottom of insulation sleeve 4 with two panels conducting strip 31 respectively,
The top of two electrode bars 2 passes top cover 7 and couples one group of binding post 5 being located on top cover 7, two electrode bars 2 and top cover 7
Top is fixedly connected.
2 points of electrode bar is the electrode epimere 21 and electrode hypomere 22 that are connected at cavity 6, and the top of electrode hypomere 22 is opened up
Have a funnel shaped embedding hole 23, the bottom of electrode epimere 21 is downwardly convex have with embedding hole 23 mutually chimeric funnelform abaculus 24,
Abaculus 24 includes conus portion 241 and is fixed on the cylindrical portion 242 of the bottom of conus portion 241.
To be not easy to disengage with housing 1 while enabling side wall of the top cover 7 along housing 1 to slide up and down again, the bottom of top cover 7
Portion's outer rim is put and is welded on the inwall of housing 1 by two symmetrically arranged solder joints integrally formed with a circle chimb 71, chimb 71,
The top margin inner edge of housing 1 is integrally formed with the rib 11 cooperated with chimb 71.
It is arranged with what a metal material was made outside top cover 7 and the sealing of the junction of housing 1, the top of housing 1 to increase
Bellows 8, the top of bellows 8 is fixed on the top outer rim of top cover 7, and the bottom of bellows 8 is fixed on the outer wall of housing 1,
With the sliding up and down relative to housing 1 of top cover 7, bellows 8 is stretched, it is to avoid gas is from top during top cover 7 is moved
Gap turnover between lid 7 and housing 1 is so as to ensure sealing.
When electric capacity is breakdown or electric capacity internal components aging during the reaction of electrode bar 2 and electrolyte easily produce it is a large amount of
Gas, and during the heat that produces also easily causes electrolyte volatilization, reaction is produced gas expansion, heat and gas
Cognition raises the air pressure in housing 1.Now, top cover 7 is made chimb by upward power in the presence of the inner high voltage gas of housing 1
Solder joint between 71 and housing 1 is disconnected, and the upward sliding of top cover 7, bellows 8 is gradually stretched, the electrode epimere 21 of electrode bar 2 with
The upward sliding of top cover 7, now the conus portion 241 of abaculus 24 separated with embedding hole 23, the cylindrical portion 242 of abaculus 24 is along the embedding inwall of hole 23
Slide.
There are two kinds of situations during the upward sliding of top cover 7：
First, the air pressure in housing 1 is smaller, and the inwall of the cylindrical portion 242 in embedding hole 23 still with embedding hole 23 is fitted, and electrode bar 2 is still
Effect is on, electric capacity still can be with normal work, when electric capacity is disconnected with power circuit, electrode bar 2 and electrolyte
Temperature inside reaction stopping, housing 1 can be reduced gradually, and the air pressure in housing 1 has declined, the slide downward of top cover 7, bellows
8 are shunk, and the inwall of the cylindrical portion 242 in embedding hole 23 still with embedding hole 23 is fitted, and allows electric capacity to continue to be used.
2nd, when the gas in housing 1 is excessive, when air pressure is too high, the cylindrical portion 242 of abaculus 24 is moved on electrode epimere 21
Deviate from from embedding hole 23, so that electrode bar 2 disconnects, capacitance damage no longer works, and the heat in electric capacity also will gradually drop
The reaction of low, electrode bar 2 and electrolyte stops, and then makes the air pressure in electric capacity stop rising, or even air pressure decreases, so that
Reduce the possibility that the situation of electric capacity blast is produced., can be by when electric capacity is stopped and its temperature is reduced to normality
Bear down on one at the top of lid 7, the cylindrical portion 242 of abaculus 24 is stretched into embedding hole 23 and is fitted with the embedding inwall of hole 23, electric capacity is still continued
Use.For convenience of cylindrical portion 242 stretches into embedding hole 23 and is not easy to occur to rub with the embedding inwall of hole 23 and damages, cylindrical portion
242 bottom is set into downwardly convex arc.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of explosion prevention capacitor, including cylindrical housings (1), two electricity for being arranged on along housing (1) axial direction in housing (1)
Filled with electrolysis in pole rod (2) and the capacitance core (3) with two electrode bars (2) for axis volume on the outside of it, the housing (1)
Liquid, the bottom of the electrode bar (2) is fixed on the bottom of the housing (1), it is characterised in that：Inner sleeve at the top of the housing (1)
Provided with columned top cover (7), the top of the top cover (7) is passed at the top of the electrode bar (2) and one group of terminals is coupled
Sub (5), the bottom outer-edge of the top cover (7) is provided with a circle chimb (71), and chimb (71) point is welded in the interior of the housing (1)
On wall, the electrode bar (2), which is divided at the top of electrode epimere (21) and electrode hypomere (22), the electrode hypomere (22), to be offered
Embedding hole (23), the bottom of the electrode epimere (21) is provided with the abaculus (24) chimeric with embedding hole (23).
2. explosion prevention capacitor according to claim 1, it is characterised in that：The embedding hole (23) is set in infundibulate, described embedding
Block (24) includes conus portion (241) and is fixed on the cylindrical portion (242) of conus portion (241) bottom.
3. explosion prevention capacitor according to claim 2, it is characterised in that：The bottom of the cylindrical portion (242) is into downwardly convex
Arc set.
4. explosion prevention capacitor according to claim 1, it is characterised in that：Increase is arranged with outside the top of the housing (1) close
The bellows (8) of envelope property, be fixed at the top of the bellows (8) the top outer rim of the top cover (7), bottom be fixed on it is described
On the outer wall of housing (1).
5. explosion prevention capacitor according to claim 4, it is characterised in that：The bellows (8) is made up of metal material.
6. explosion prevention capacitor according to claim 1, it is characterised in that：The top margin inner edge of the housing (1) is provided with and chimb
(71) rib (11) cooperated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720125564.7U CN206574611U (en) | 2017-02-11 | 2017-02-11 | A kind of explosion prevention capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720125564.7U CN206574611U (en) | 2017-02-11 | 2017-02-11 | A kind of explosion prevention capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206574611U true CN206574611U (en) | 2017-10-20 |
Family
ID=60058633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720125564.7U Active CN206574611U (en) | 2017-02-11 | 2017-02-11 | A kind of explosion prevention capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206574611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343832A (en) * | 2019-08-08 | 2021-02-09 | 沈阳深井潜水泵有限公司 | Active explosion-proof crack submersible electric pump shell |
-
2017
- 2017-02-11 CN CN201720125564.7U patent/CN206574611U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343832A (en) * | 2019-08-08 | 2021-02-09 | 沈阳深井潜水泵有限公司 | Active explosion-proof crack submersible electric pump shell |
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