CN205595295U - Direct current (DC) circuit breaker - Google Patents
Direct current (DC) circuit breaker Download PDFInfo
- Publication number
- CN205595295U CN205595295U CN201620448462.4U CN201620448462U CN205595295U CN 205595295 U CN205595295 U CN 205595295U CN 201620448462 U CN201620448462 U CN 201620448462U CN 205595295 U CN205595295 U CN 205595295U
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- extension
- plate
- aerogenesis
- arc
- shutter
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Abstract
The utility model provides a direct current (DC) circuit breaker, explosion chamber install on the second casing, and have the side opening relative with first casing, and produce the gas hood and install in the inside below of explosion chamber, produce gas board and shielding plate including two relative of setting up, the shielding plate is relative with the side opening and be close to the setting of second casing, and the sound contact is installed inside installation space, and divides disconnected department to be located inside the accommodation space to be close to the shielding plate, when the sound contact divides the living electric arc of stopping pregnancy, produce gas board and shielding plate and triggered by electric arc, produce a large amount of gaseous promotion electric arcs and remove towards the direction of keeping away from the shielding plate, the arc extinguishing bars piece of installing in explosion chamber inside top is equipped with the lower part opening towards one side of accommodation space, and open -ended size in lower part reduces along the direction of second casing to first casing gradually, and electric arc is at the in -process that removes, constantly receives blockking of arc extinguishing bars piece that the lower part opening is littleer, make its the side opening that can not follow the explosion chamber rush out, and extinguishes as early as possible in the space that can only enter into between the arc extinguishing bars piece.
Description
Technical field
This utility model relates to dc circuit breaker technical field, is specifically related to a kind of dc circuit breaker.
Background technology
Low-voltage circuit breaker is a kind of important power transmission and distribution electrical equipment, plays distribution electric energy in the line and protects
Protect the important function of equipment and personal security.Low-voltage circuit breaker can be divided into alternating current interruption by its use system
Device and dc circuit breaker.In normal operating conditions, low-voltage circuit breaker passes through Guan Bi or the disconnection of contact,
Realize the distribution to power load and control.When breaking down in circuit, chopper detects fault
Signal, electrical apparatus release action, make contact disjunction, open failure circuit.When the fault that is short-circuited in circuit
Time, when disjunction short circuit current, quickly extinguishing electric arc is the important bar ensureing the reliable disjunction of chopper
Part.In AC system, owing to alternating current has zero crossing, the extinguishing of electric arc is relatively easy, and straight
Stream electricity does not has zero crossing, and the extinguishing of electric arc is the most relatively difficult.The most popular way is
Arc quenching effect is strengthened by installing permanent magnet additional, though this kind of method beneficially arc extinguishing, but limit open circuit
The both positive and negative polarity connection type of device.
Chinese patent literature CN204067289U discloses a kind of direct current breaker of plastic casing, including detachable
The first shell connected and second housing, be provided with arc-chutes, be provided with some in arc-chutes in second housing
Uniform arc extinguishing grid pieces, arc-chutes include the upper port corresponding with the first shell, in arc-chutes and arc extinguishing
Grid is correspondingly provided with aerogenesis frame, on one end of aerogenesis frame is located between the first shell and upper port and is covered
Port.Aerogenesis frame includes two aerogenesis arms being oppositely arranged, and one end of two aerogenesis arms is provided with shutter,
Shutter is located between the first shell and upper port and covers upper port.
Direct current breaker of plastic casing in this patent documentation, although do not install permanent magnet additional to strengthen arc extinguishing effect
Really, without limitation on the both positive and negative polarity connection type of chopper, but it is in the upper port and first of arc-chutes
Shutter it is additionally arranged between shell, although produce when such design can avoid arc burning
Air pressure leaks at this, and it can be avoided that avulsion the first shell, but occur the problem that from it
The accompanying drawing 6 of description is it can be seen that the breakpoint of dynamic/static contact is near second housing, and away from blocking
Plate, when dynamic/static contact disjunction produces electric arc, the aerogenesis arm near electric arc is heated aerogenesis, promotes electricity
Arc moves to the position near shutter；In electric arc moves closer to the moving process of shutter, hiding
Baffle plate block under effect, air pressure raises rapidly, and then causes the retard motion of electric arc, and then causes
Displacement shortens, and under bigger gas pressure, electric arc can only up move to arc extinguishing grid pieces；By
Short in the displacement of electric arc, the electric arc moved upward can only be with this portion near dynamic/static contact breakpoint
Divide arc extinguishing grid pieces contact, it is impossible to make full use of most arc extinguishing grid pieces, cause this part arc extinguishing grid pieces
Heat up rapidly, be unfavorable for the fast cooling of electric arc, and then be unfavorable for that the quick of electric arc is extinguished, if worn
After crossing arc extinguishing grid pieces, electric arc extinguishes not yet, can bring about danger；Dynamic/static contact of the prior art is purely
Contact with traditional point-to-point form, when electric current is bigger, the magnetic direction phase that dynamic/static contact produces
With, there is the effect attracted each other, cause disjunction difficulty.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome direct current interruption of the prior art
Device sets up shutter between the first shell and the upper port of arc-chutes, causes electric arc in arc-chutes
Displacement shortens, and then causes to make full use of major part arc extinguishing grid pieces, so that electric arc is difficult to put out
Go out and the technological deficiency of dynamic/static contact disjunction difficulty, thus provide one can protect shell, can fill again
Divide and utilize most arc extinguishing grid pieces to improve arc quenching effect, and the easy direct current interruption of dynamic/static contact disjunction
Device.
To this end, this utility model provides a kind of dc circuit breaker, it is characterised in that: including:
First housing；
Second housing, relative with described first housing and be secured to connect, to form internally installed sky
Between；
Arc-chutes, are arranged on described second housing and are positioned at inside described installing space, have and institute
State the side opening that the first housing is relative；
Aerogenesis cover, is arranged on the lower inside of described arc-chutes, including the first aerogenesis plate being oppositely arranged
With the second aerogenesis plate, and connect described first aerogenesis plate and described second aerogenesis plate with formed accommodate sky
Between shutter, described shutter relative with described side opening and near described second housing arrange, institute
State the first aerogenesis plate, the second aerogenesis plate and described shutter and be aerogenesis material；
Dynamic and static contact, is arranged on inside described installing space, position at the disjunction of described dynamic and static contact
In described receiving interior volume, and near described shutter；Described static contact has the first extension,
Described moving contact has the second extension, during described dynamic and static contact, described first extension with
Described second extension is substantially parallel, and energising after current is in opposite direction；
Arc extinguishing grid pieces, has several, is arranged on the inner upper of described arc-chutes, has and described appearance
Receiving the relative lower openings in space, the openings of sizes of described lower openings is along described second housing to the most described
First housing direction is gradually reduced.
As a kind of preferred version, described first housing is provided with relative with described first aerogenesis plate the
One extension plate, and second extension plate relative with described second aerogenesis plate, described first extension plate and
Second extension plate stretches into inside described arc-chutes, is formed and connects with described receiving space and go out with described
Arc grid clearance space opposing upper and lower.
As a kind of preferred version, described first aerogenesis plate and described second aerogenesis plate be arranged in parallel, and
Form some towards extending each other on the medial surface of described first aerogenesis plate and described second aerogenesis plate
Raised plate, forms groove between two raised plate of arbitrary neighborhood, the development length of described raised plate is along remote
It is gradually increased from the direction of described arc extinguishing grid pieces.
As a kind of preferred version, described first extension plate and described second extension plate are obliquely installed, shape
Become the described clearance space that the big under shed of upper shed is little.
As a kind of preferred version, described first extending part in described receiving outside, and with institute
State shutter substantially parallel；On described first extension, there is stationary contact, relative with described stationary contact
Described shutter offers stationary contact through hole, is positioned at the described moving contact of described receiving interior volume
Movable contact contact connection with described stationary contact by described stationary contact through hole.
As a kind of preferred version, described static contact includes the first extension, with described first extension
The 3rd extension being oppositely arranged, connects described first extension bottom and described 3rd extension bottom
The first connecting portion, be connected and towards described first extension side with the top of described 3rd extension
To the second horizontal-extending connecting portion, and the wire connecting portion being connected with described second connecting portion.
As a kind of preferred version, also include that protection board, described protection board have and be positioned at described first and prolong
The first protection board between extending portion and described 3rd extension, and be connected with described first protection board, and
The second protection board between described second connecting portion and described arc extinguishing grid pieces.
As a kind of preferred version, described protection board is fixed on described aerogenesis cover by attachment structure.
As a kind of preferred version, described first aerogenesis plate has from described shutter outward extending the
One extension, described second aerogenesis plate has from outward extending second extension of described shutter, institute
State the part lower end closed of the close described shutter of aerogenesis cover and extend outward from described shutter
3rd extension；Described first extension is provided with the first grab, and described second extension is provided with
Two grabs, described first protection board is provided with the first clamping that can coordinate clamping with described first grab
Mouthful, and coordinate the second card interface of clamping with described second grab；Described first protection board is with described
The space for accommodating described first connecting portion is formed between 3rd extension.
As a kind of preferred version, several described arc extinguishing grid pieces relative with described second protection board,
The lower openings arranged on it is gradually reduced along the direction opening near described static contact, and last
Described arc extinguishing grid pieces is not provided with described lower openings.
The dc circuit breaker that this utility model provides, has the advantage that
Dc circuit breaker the most of the present utility model, arc-chutes are installed on the second housing, and are had and the
The side opening that one housing is relative, aerogenesis cover is arranged on the lower inside of arc-chutes, including be oppositely arranged
First aerogenesis plate, the second aerogenesis plate and connect both shutter, shutter relative with side opening and
Arranging near the second housing, dynamic and static contact is arranged on inside installing space, and is positioned at receiving at disjunction
Interior volume, and near shutter；When dynamic and static contact disjunction produces electric arc, the first aerogenesis plate,
Second aerogenesis plate and shutter are triggered by the electric arc of high temperature, produce a large amount of gas, gas push electric arc
Direction away from shutter is moved, and electric arc is during movement, and the aerogenesis plate of both sides is constantly subject to
Delivery in hot weather gas, blows electric arc accelerated motion obliquely upward；Several being arranged on arc-chutes inner upper go out
Arc grid is provided with lower openings towards the side accommodating space, and pilot arc enters between arc extinguishing grid pieces
Gap, lowers the temperature to electric arc so that it is extinguish；Owing to the size of lower openings is along the second housing to
The direction of one housing is gradually reduced, and electric arc is during movement, constantly less by lower openings
The stop of arc extinguishing grid pieces so that it is can not go out from the side opening of arc-chutes, can only enter arc extinguishing grid pieces
Between space, utilize most arc extinguishing grid pieces that electric arc is lowered the temperature, promote it to extinguish as early as possible；
Shutter can not only prevent electric arc from going out arc-chutes, also encloses shape with the first aerogenesis plate, the second aerogenesis plate
Become the receiving space of a relative closure, after excited generation gas by the high temperature of electric arc, increased
Gas pressure, it is possible to blow electric arc accelerated motion；Compared with prior art, direct current of the present utility model
Chopper, can not only protect the first housing not by avulsion, moreover it is possible to make full use of most arc extinguishing grid pieces
Improve arc quenching effect；
First extension and second extension of dynamic/static contact are substantially parallel, and energising after current direction phase
Instead, namely after energising, the first extension and the second extension the first extension and the second extension it
Between position produce magnetic direction identical, when dynamic and static contact disjunction, this magnetic field can drive dynamic
Contact is faster away from static contact, so that the disjunction change of dynamic/static contact is easy.
Dc circuit breaker the most of the present utility model, the first housing is provided with relative with the first aerogenesis plate
One extension plate, second extension plate relative with the second aerogenesis plate, the first extension plate and the second extension plate are stretched
Enter inside arc-chutes, formed and accommodate space and connect and clearance space opposing upper and lower with arc extinguishing grid pieces；
The clearance space that first extension plate and the second extension plate are formed connects with accommodating space, increases electric arc
Horizontal movement scope, provides space for weakening arc energy further.
Dc circuit breaker the most of the present utility model, the medial surface of the first aerogenesis plate and the second aerogenesis plate becomes
Shape has some towards the raised plate extended each other, forms groove between two raised plate of arbitrary neighborhood；
After electric arc produces and is blown by gas, the raised plate that aerogenesis plate is arranged and groove, it is possible to increase electricity
The area that arc contacts with aerogenesis plate, advantageously reduces the temperature of electric arc, and is conducive to producing more substantial
Gas blows electric arc and moves upward；The development length of raised plate gradually increases along the direction away from arc extinguishing grid pieces
Greatly, can stop that electric arc moves downward, prevent electric arc from going out downwards arc-chutes.
Dc circuit breaker the most of the present utility model, the first extension plate and the second extension plate are obliquely installed, shape
The big under shed of clearance space upper shed become is little, it is possible to coordinates with aerogenesis cover, plays pilot arc upwards
Enter arc extinguishing grid pieces, and prevent electric arc from going out downwards the effect of arc-chutes.
Dc circuit breaker the most of the present utility model, the first extending part in accommodate outside, and with screening
Baffle plate is substantially parallel；Having stationary contact on first extension, relative with stationary contact opens on shutter
Be provided with stationary contact through hole, be positioned at accommodate interior volume moving contact movable contact by stationary contact through hole with
Stationary contact contact connects.This setup can make the nearest close of the breakpoint of dynamic/static contact
Shutter, the electric arc produced after dynamic/static contact disjunction can affect two aerogenesis plates and shutter simultaneously,
Thus produce rapidly a large amount of gas, promote electric arc to move rapidly.
Dc circuit breaker the most of the present utility model, static contact includes the first extension, with the first extension
The 3rd extension being oppositely arranged, connects the first company of the first extension bottom and the 3rd extension bottom
Meet portion, be connected with the top of the 3rd extension and towards the first extension direction horizontal-extending second
Connecting portion, and the wire connecting portion being connected with the second connecting portion.This kind of set-up mode so that first extends
Portion is substantially parallel with shutter such that it is able to conveniently realizes the second extension with moving contact and parallels,
And then realize the easier disjunction of dynamic/static contact；First connecting portion, the 3rd extension, the second connecting portion
And the set-up mode of wire connecting portion, it is possible to save space, make equipment entirety more compact, and reasonably pacify
Arrange wiring position.
Dc circuit breaker the most of the present utility model, protection board has and is positioned at the first extension and the 3rd extension
The first protection board between portion, and be connected with the first protection board, and it is positioned at the second connecting portion and arc-chute
The second protection board between sheet.First protection board can protect the first extension only by the first connecting portion
It is connected with the 3rd extension, it is ensured that the sense of current on the first extension and the electric current on the second extension
In opposite direction；Second protection board can prevent electric arc from scurrying out from the gap position of arc extinguishing grid pieces and static contact connects
Touch, it is ensured that safety.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in prior art or this utility model detailed description of the invention,
Accompanying drawing used in describing prior art or detailed description of the invention below is briefly described, aobvious and easy
Insight, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to these accompanying drawings.
Fig. 1 is the overall structure schematic diagram of Arc-extinguishing Devices of DC Circuit Breakers in this utility model embodiment.
Fig. 2 is the relative location drawing of the first housing and chopper in Fig. 1.
Fig. 3 is the structure enlarged diagram of part A in Fig. 2.
Fig. 4 is the relative location drawing of the second housing and chopper in Fig. 1.
Fig. 5 is the structure enlarged diagram of part B in Fig. 4.
Fig. 6 is the combination installation diagram of arc-chutes, arc extinguishing grid pieces, aerogenesis cover and static contact.
Fig. 7 is another view of Fig. 6.
Fig. 8 is the detonation configuration schematic diagram of Fig. 6.
Fig. 9 is the axonometric chart of aerogenesis cover.
Figure 10 is the axonometric chart of arc extinguishing grid pieces.
Figure 11 is the detonation configuration figure of arc extinguishing labyrinth structure.
Figure 12 is the schematic enlarged-scale view of C portion in Figure 11.
Figure 13 is structure chart during dynamic/static contact contact connection.
Reference: 1-the first housing, 11-the first extension plate, 12-the second extension plate, 13-is spaced sky
Between, 14-air vent, 2-the second housing, 10-installing space, 3-arc-chutes, 30-side opening, 31-
First dividing plate, 32-second partition, 4-aerogenesis cover, 40-accommodates space, 41-the first aerogenesis plate, 411-
First extension, 412-the first grab, 42-the second aerogenesis plate, 421-the second extension, 422-second
Grab, 43-shutter, 431-the 3rd extension, 432-space, 44-raised plate, 45-groove, 46-
Stationary contact through hole, 5-moving contact, 51-the second extension, 6-static contact, 60-stationary contact, 61-first
Extension, 62-the first connecting portion, 63-the 3rd extension, 64-the second connecting portion, 65-wire connecting portion,
7-arc extinguishing grid pieces, 71-lower openings, 8-labyrinth arc extinguishing structure, 80-seals space, 81-the first flat board,
811-the first gap, 82-the second flat board, 821-the second gap, 83-starting stave, 84-side installing plate,
85-labyrinth channel, 9-protection board, 91-the first protection board, 911-the first card interface, 912-second blocks
Interface, 92-the second protection board.
Detailed description of the invention
Below in conjunction with Figure of description, the technical solution of the utility model is described, it is clear that following
Embodiment be not the whole embodiment of this utility model.Based on the embodiment described by this utility model,
It is every other that those of ordinary skill in the art are obtained under not making other creative work premises
Embodiment, broadly falls into protection domain of the present utility model.
It should be noted that in description of the present utility model, term " first ", " second " are only used
In describing purpose, and it is not intended that indicate or hint relative importance.Additionally, it is disclosed below
As long as technical characteristic involved in this utility model difference embodiment does not just constitute conflict each other
Can be combined with each other.
Embodiment
The present embodiment provides a kind of dc circuit breaker, as shown in Fig. 1-6 and 9, including: the first housing 1；
Second housing 2, relative with described first housing 1 and be secured to connect, to form internally installed space
10；Arc-chutes 3, are arranged on described second housing 2 and are positioned at described installing space 10 inside, tool
There is the side opening 30 relative with described first housing 1；Aerogenesis cover 4, is arranged on described arc-chutes 3
Lower inside, including the first aerogenesis plate 41 and the second aerogenesis plate 42 being oppositely arranged, and connects described
First aerogenesis plate 41 and described second aerogenesis plate 42 are to form the shutter 43 accommodating space 40, described
Shutter 43 is relative with described side opening 30 and arranges near described second housing 2, and described first produces
Gas plate the 41, second aerogenesis plate 42 and described shutter 43 are aerogenesis material；Dynamic and static contact 5,6,
It is arranged on described installing space 10 internal, at the disjunction of described dynamic and static contact 5,6, is positioned at described receiving
Space 40 is internal, and near described shutter 43, described static contact 6 has the first extension 61,
Described moving contact 5 has the second extension 51, during the contact of described dynamic and static contact 5,6, and described first
Extension 51 is substantially parallel with described second extension 61, and energising after current is in opposite direction；Arc extinguishing
Grid 7, has several, is arranged on the inner upper of described arc-chutes 3, has and accommodates sky with described
Between 40 relative lower openings 71, the openings of sizes of described lower openings 71 is along described second housing 2
It is gradually reduced (as shown in Figure 10) to described first housing 1 direction.
When dynamic and static contact 5,6 disjunction produces electric arc, first aerogenesis plate the 41, second aerogenesis plate 42
And shutter 43 is triggered by the electric arc of high temperature, produce a large amount of gas, gas push electric arc away from
The direction of shutter 43 is moved, and electric arc is during movement, and the aerogenesis plate 41,42 of both sides is constantly subject to
Delivery in hot weather gas, blows electric arc accelerated motion obliquely upward；It is arranged on several of arc-chutes 3 inner upper
Arc extinguishing grid pieces 7 is provided with lower openings 71 towards the side accommodating space 40, and pilot arc enters arc-chute
Gap between sheet 7, lowers the temperature to electric arc so that it is extinguish；Size edge due to lower openings 71
The direction of the second housing 2 to the first housing 1 is gradually reduced, and electric arc, during movement, is constantly subject to
Stop to the less arc extinguishing grid pieces 7 of lower openings 71 so that it is can not be from the side opening 30 of arc-chutes 3
Go out, can only enter the space between arc extinguishing grid pieces 7, utilize most arc extinguishing grid pieces 7 to carry out
Cooling, promotes it to extinguish as early as possible；Shutter 43 can not only prevent electric arc from going out arc-chutes 3, also with
One aerogenesis plate the 41, second aerogenesis plate 42 encloses the receiving space 40 defining a relative closure,
After being excited generation gas by the high temperature of electric arc, increase gas pressure, it is possible to blow electric arc accelerated motion；
Compared with prior art, the dc circuit breaker of the present embodiment, the first housing 1 can not only be protected not rushed
Split, moreover it is possible to make full use of most arc extinguishing grid pieces 7 and improve arc quenching effect.
As Figure 2-3, described first housing 1 is provided with relative with described first aerogenesis plate 41
One extension plate 11, and second extension plate 12 relative with described second aerogenesis plate 42, described first
It is internal that extension plate 11 and the second extension plate 12 stretch into described arc-chutes 3, is formed and described receiving space
40 connection and with described arc extinguishing grid pieces 7 clearance space opposing upper and lower 13.First extension plate 11 He
The clearance space 13 that second extension plate 12 is formed connects with accommodating space 40, increases the level of electric arc
Range of movement, provides space for weakening arc energy further.
As shown in Figure 6, described first aerogenesis plate 41 and described second aerogenesis plate 42 be arranged in parallel, and
It is formed with some towards each other on the medial surface of described first aerogenesis plate 41 and described second aerogenesis plate 42
The raised plate 44 extended, forms groove 45, described raised plate between two raised plate 44 of arbitrary neighborhood
The development length of 44 is gradually increased along the direction away from described arc extinguishing grid pieces 7.Electric arc produces and by gas
After blowing, aerogenesis plate 41, the raised plate 44 arranged on 42 and groove 45, it is possible to increase electric arc and product
The area of gas plate 41,42 contact, advantageously reduces the temperature of electric arc, and is conducive to producing more substantial
Gas blows electric arc and moves upward；The development length of raised plate 44 along away from arc extinguishing grid pieces 7 direction by
Cumulative can stop that electric arc moves downward greatly, prevent electric arc from going out downwards arc-chutes 3.
Described first extension plate 11 and described second extension plate 12 are obliquely installed, and are formed under upper shed greatly
The described clearance space 13 that opening is little.Being of the benefit so arranged, clearance space 13 can be with product
Gas hood 4 coordinates, and plays pilot arc and is upwardly into arc extinguishing grid pieces 7, and prevents electric arc from going out downwards arc extinguishing
The effect of room 3.
Described lower openings 71 is circular arc opening.The opening of circular arc can preferably attract electric arc to enter
Enter the gap between arc extinguishing grid pieces 7.
As shown in fig. 6-7, first installed in described arc-chutes 3 are included in described installing space 10 every
Plate 31 and second partition 32, described first dividing plate 31 and described second partition 32 are oppositely arranged to be formed
For installing described aerogenesis cover 4 and the space of described arc extinguishing grid pieces 7.
Described first aerogenesis plate 41 is parallel relative with described first dividing plate 31, described second aerogenesis plate 42
Parallel relative with described second partition 32；The two opposite side walls of described arc extinguishing grid pieces 7 is separately fixed at institute
State on the first dividing plate 31 and described second partition 32, and lay respectively at described first aerogenesis plate 41 and institute
State between the first dividing plate 31, and between described second aerogenesis plate 42 and described second partition 32.
As shown in Fig. 6,7,11 and 12, also include labyrinth arc extinguishing structure 8 (in the present embodiment, labyrinth
Arc extinguishing structure is formed by two parts docking, it is also possible to be arranged to one), described labyrinth arc extinguishing structure 8 is pacified
It is contained in described installing space 10 internal, and there is labyrinth channel 85, one end of described labyrinth channel 85
The opening electric arc that with reception is not off relative with described arc extinguishing grid pieces 7, other end opening is with air even
Logical.The effect of labyrinth channel 85 is to receive the electric arc extinguished not yet after arc extinguishing grid pieces 7, and right
It is further lowered the temperature so that it is extinguish；Labyrinth channel 85 not only increases the movement length of electric arc,
The motion returning electric arc causes resistance so that the time that electric arc retains in labyrinth channel 85 is longer,
Can lower the temperature more fully, be beneficial to the extinguishing of electric arc.
As shown in Figure 4, described labyrinth arc extinguishing structure 8 is formed with described first housing the 1, second housing 2
Sealing space 80, the other end opening of described labyrinth channel 85 connects with described sealing space 80, institute
State the first housing 1 and/or described second housing 2 is provided with the aerofluxus connected with described sealing space 80
Mouth 14.
Concrete, described labyrinth arc extinguishing structure 8 includes: side installing plate 84, is two and is oppositely arranged；
First flat board 81, at least two-layer, each layer all has several, and the two ends of each are fixed on two
On the inwall of individual described side installing plate 84, and described in any two of same layer between the first flat board 81
Forming the first gap 811, described first flat board about 81 being positioned on different layers is relative；Starting stave
83, at least one layer, each layer all has several, and the two ends up and down of each are respectively with the most relative
Two described first flat boards 81 connect；Second flat board 82, one end is fixed on described starting stave 83
On, the other end extends towards another second riser 83 close with described starting stave 83, and with
Another described second riser 83 forms the second gap 821, and described second flat board 82 is by opposing upper and lower
Two described first gaps 811 are blocked, several described first gaps 811 and several described second
Gap 821 forms described labyrinth channel 85.
As shown in figure 13, described static contact 6 has the first extension 61, and described moving contact 5 has
Two extensions 51, when the contact of described dynamic and static contact 5,6 connects, described first extension 51 and institute
State the second extension 61 substantially parallel, and energising after current is in opposite direction.When, after energising, first extends
Portion 61 and the second extension 51 position between the first extension 61 and the second extension 51 produces
Magnetic direction identical, when dynamic and static contact 5,6 disjunction, this magnetic field can drive moving contact 5 more
Fast away from static contact 6 so that the disjunction of dynamic/static contact become easy.
As shown in figs 6-8, it is outside that described first extension 61 is positioned at described receiving space 40, and with
Described shutter 43 is substantially parallel；On described first extension 61, there is stationary contact 60, quiet with described
What contact 60 was relative offers stationary contact through hole 46 on described shutter 43, is positioned at described receiving sky
Between the movable contact of described moving contact 5 within 40 by described stationary contact through hole 46 and described stationary contact
60 contacts connect.This setup can make the nearest close of the breakpoint of dynamic/static contact 5,6
Shutter 43, dynamic/static contact 5, the electric arc produced after 6 disjunctions can affect two aerogenesis plates 41,42 simultaneously
And shutter 43, thus produce rapidly a large amount of gas, promote electric arc to move rapidly.
Described static contact 6 includes the first extension 61, with described first extension 61 be oppositely arranged
Three extensions 63, connect the of described first extension 61 bottom and described 3rd extension 63 bottom
A junction 62, is connected and towards described first extension with the top of described 3rd extension 63
The second connecting portion 64 that 61 directions are horizontal-extending, and the wiring being connected with described second connecting portion 64
Portion 65.This kind of set-up mode so that the first extension 61 is substantially parallel with shutter 43, it is thus possible to
Enough conveniently realize the second extension 51 with moving contact 5 to parallel, and then realize dynamic/static contact 5,6
Easier disjunction；First connecting portion 62, the 3rd extension 63, the second connecting portion 64 and wiring
The set-up mode in portion 65, it is possible to save space, make equipment entirety more compact, and be reasonably scheduled that and connect
Line position.
Also include that protection board 9, described protection board 9 have and be positioned at described first extension 61 and described
The first protection board 91 between three extensions 63, and be connected with described first protection board 91, and be positioned at
The second protection board 92 between described second connecting portion 64 and described arc extinguishing grid pieces 7.First protection board
91 can protect the first extension 61 to be only connected with the 3rd extension 63 by the first connecting portion 62, protect
Demonstrate,prove the sense of current on the first extension 61 and the sense of current on the second extension 51 is contrary；Second
Protection board 92 can prevent from electric arc from scurrying out from the gap position of arc extinguishing grid pieces 7 contacting with static contact 6, it is ensured that
Safety.
Described protection board 9 is fixed on described aerogenesis cover 4 by attachment structure.Described first aerogenesis plate
41 have from outward extending first extension 411 of described shutter 43, described second aerogenesis plate 42
Have from outward extending second extension 421 of described shutter 43, the close institute of described aerogenesis cover 4
State the part lower end closed of shutter 43 and extend outward the 3rd extension from described shutter 43
431；Described first extension 411 is provided with the first grab 412, and described second extension 421 sets
Have the second grab 422, described first protection board 91 to be provided with to coordinate with described first grab 421
First card interface 911 of clamping, and coordinate the second card interface of clamping with described second grab 422
912；Formed between described first protection board 91 and described 3rd extension 431 and be used for accommodating described the
The space 432 of a junction 62.
Several described arc extinguishing grid pieces 7 relative with described second protection board 92, the bottom that it is arranged
Opening 71 is gradually reduced along the direction opening near described static contact 6, and last described arc-chute
Sheet 7 is not provided with described lower openings 71.Such structure designs, it is possible to stop that electric arc enters as far as possible
Enter the arc extinguishing grid pieces 7 being positioned at below the second protection board 92, and then avoid electric arc to go out with quiet from this position
Contact 6 contacts, it is ensured that safety.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (10)
1. a dc circuit breaker, it is characterised in that: including:
First housing (1)；
Second housing (2), relative with described first housing (1) and be secured to connect, with formed in
Portion's installing space (10)；
Arc-chutes (3), are arranged on described second housing (2) and above and are positioned at described installing space (10)
Inside, has the side opening (30) relative with described first housing (1)；
Aerogenesis cover (4), is arranged on the lower inside of described arc-chutes (3), including be oppositely arranged
One aerogenesis plate (41) and the second aerogenesis plate (42), and connect described first aerogenesis plate (41) and institute
State the second aerogenesis plate (42) to form the shutter (43) accommodating space (40), described shutter (43)
Relative with described side opening (30) and close described second housing (2) is arranged, described first aerogenesis plate
(41), the second aerogenesis plate (42) and described shutter (43) are aerogenesis material；
Dynamic and static contact (5,6), is arranged on described installing space (10) internal, described dynamic and static tactile
Described receiving space (40) it is positioned at internal at the disjunction of head (5,6), and near described shutter (43)；
Described static contact (6) has the first extension (61), and described moving contact (5) has the second extension
(51), during the contact of described dynamic and static contact (5,6), described first extension (51) and described the
Two extensions (61) are substantially parallel, and energising after current is in opposite direction；
Arc extinguishing grid pieces (7), has several, is arranged on the inner upper of described arc-chutes (3), tool
There are the lower openings (71) relative with described receiving space (40), opening of described lower openings (71)
Mouth size is gradually reduced along described second housing (2) to described first housing (1) direction.
Dc circuit breaker the most according to claim 1, it is characterised in that: described first housing (1)
It is provided with first extension plate (11) relative with described first aerogenesis plate (41), and with described second
The second extension plate (12) that aerogenesis plate (42) is relative, described first extension plate (11) and second extends
It is internal that plate (12) stretches into described arc-chutes (3), formed connect with described receiving space (40) and
With described arc extinguishing grid pieces (7) clearance space opposing upper and lower (13).
Dc circuit breaker the most according to claim 2, it is characterised in that: described first aerogenesis plate
(41) it be arranged in parallel with described second aerogenesis plate (42), and described first aerogenesis plate (41) and institute
State form on the medial surface of the second aerogenesis plate (42) some towards the raised plate extended each other (44),
Groove (45), the extension of described raised plate (44) is formed between two raised plate (44) of arbitrary neighborhood
Length is gradually increased along the direction away from described arc extinguishing grid pieces (7).
4. according to the dc circuit breaker described in Claims 2 or 3, it is characterised in that: described first prolongs
Long slab (11) and described second extension plate (12) are obliquely installed, and form the big under shed of upper shed little
Described clearance space (13).
Dc circuit breaker the most according to claim 1, it is characterised in that: described first extension
(61) described receiving space (40) it is positioned at outside, and substantially parallel with described shutter (43)；
On described first extension (61), there is stationary contact (60), relative with described stationary contact (60)
Offer stationary contact through hole (46) on described shutter (43), be positioned at described receiving space (40)
The movable contact of the described moving contact (5) in portion is by described stationary contact through hole (46) and described stationary contact (60)
Contact connects.
Dc circuit breaker the most according to claim 5, it is characterised in that: described static contact (6)
Including the first extension (61), the 3rd extension (63) being oppositely arranged with described first extension (61),
Connect the first connection of described first extension (61) bottom and described 3rd extension (63) bottom
Portion (62), is connected and towards described first extension (61) with the top of described 3rd extension (63)
The second connecting portion (64) that direction is horizontal-extending, and with connecing that described second connecting portion (64) is connected
Line portion (65).
Dc circuit breaker the most according to claim 6, it is characterised in that: also include protection board (9),
Described protection board (9) has and is positioned at described first extension (61) and described 3rd extension (63)
Between the first protection board (91), and be connected with described first protection board (91), and be positioned at described
The second protection board (92) between two connecting portions (64) and described arc extinguishing grid pieces (7).
Dc circuit breaker the most according to claim 7, it is characterised in that: described protection board (9)
It is fixed on described aerogenesis cover (4) by attachment structure.
Dc circuit breaker the most according to claim 8, it is characterised in that: described first aerogenesis plate
(41) have from outward extending first extension of described shutter (43) (411), described second
Aerogenesis plate (42) has from outward extending second extension of described shutter (43) (421), institute
State the part lower end closed of the close described shutter (43) of aerogenesis cover (4) and from described shutter
(43) the 3rd extension (431) is extended outward；Described first extension (411) is provided with first
Grab (412), described second extension (421) is provided with the second grab (422), and described first protects
Backplate (91) is provided with the first card interface (911) that can coordinate clamping with described first grab (421),
And coordinate second card interface (912) of clamping with described second grab (422)；Described first protection
Formed between plate (91) and described 3rd extension (431) and be used for accommodating described first connecting portion (62)
Space (432).
Dc circuit breaker the most according to claim 7, it is characterised in that: with described second protection
Several described arc extinguishing grid pieces (7) that plate (92) is relative, lower openings (71) edge that it is arranged
Direction opening near described static contact (6) is gradually reduced, and last described arc extinguishing grid pieces (7)
It is not provided with described lower openings (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448462.4U CN205595295U (en) | 2016-05-17 | 2016-05-17 | Direct current (DC) circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448462.4U CN205595295U (en) | 2016-05-17 | 2016-05-17 | Direct current (DC) circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595295U true CN205595295U (en) | 2016-09-21 |
Family
ID=56931083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620448462.4U Withdrawn - After Issue CN205595295U (en) | 2016-05-17 | 2016-05-17 | Direct current (DC) circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205595295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762042A (en) * | 2016-05-17 | 2016-07-13 | 浙江人民电器有限公司 | Direct current circuit breaker |
-
2016
- 2016-05-17 CN CN201620448462.4U patent/CN205595295U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762042A (en) * | 2016-05-17 | 2016-07-13 | 浙江人民电器有限公司 | Direct current circuit breaker |
| WO2017198165A1 (en) * | 2016-05-17 | 2017-11-23 | 浙江人民电器有限公司 | Direct-current circuit breaker |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20180109 |
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| AV01 | Patent right actively abandoned |