CN206363976U - The arc-control device of breaker - Google Patents
The arc-control device of breaker Download PDFInfo
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- CN206363976U CN206363976U CN201720017075.XU CN201720017075U CN206363976U CN 206363976 U CN206363976 U CN 206363976U CN 201720017075 U CN201720017075 U CN 201720017075U CN 206363976 U CN206363976 U CN 206363976U
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- arc
- extinguishing grid
- grid pieces
- arc extinguishing
- breaker
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Abstract
A kind of arc-control device of breaker, including arc extinguishing grid pieces component, feature：Described arc extinguishing grid pieces component includes a top arc extinguishing grid pieces, multiple middle arc extinguishing grid pieces and multiple bottom arc extinguishing grid pieces from top to bottom, thickness arranged in parallel and bottom arc extinguishing grid pieces is more than between the thickness of described middle arc extinguishing grid pieces, multiple middle arc extinguishing grid pieces between multiple bottom arc extinguishing grid pieces is set in fan-shaped array.By changing the quantity and arrangement of the arc extinguishing grid pieces of different-thickness in arc extinguishing grid pieces component, meet in the case of identical or even more high total the air gap, arc voltage can be higher, and arc quenching effect is more preferable；The higher-pressure region of relative closure is formed by the aerogenesis of insulation arc insulating cover, accelerates electric arc to enter the speed of arc-chutes and prevent running helter-skelter for electric arc, improves electric arc cooling velocity, shorten the arc extinction time, so as to further improve the arc quenching effect of breaker.
Description
Technical field
The utility model belongs to breaker technical field, and in particular to a kind of arc-control device of breaker.
Background technology
Breaker is control important in electrical power distribution apparatus and protection electrical equipment, is mainly used in industrial low-voltage power system, uses
Come connect and disjunction mains-power circuit in electric current and protection circuit and power-supply device from overload, under-voltage, short circuit, single-phase earthing
Etc. the harm of failure.
The function that breaker carries out disjunction to overload or short circuit current flow mainly passes through the arc-chutes in breaker
Complete.When the electric current that broken down in circuit, and current value is when exceeding the setting protection domain of intelligent controller, driving operation
Mechanism action, makes the dynamic and static contact of breaker disconnect rapidly, now the voltage between dynamic and static contact causes air dielectric to discharge
And produce high-temperature electric arc.On the one hand high-temperature electric arc causes the air themperature in arc-control device to steeply rise and add in combustion
Under the promotion of fast air ionization, magnetic field on the other hand in arc-chutes and hydrodynamic effect, it is separated into by multiple arc grid many
Individual short arc, strengthens the deionization effect of electric arc by metal arc piece, electric arc diminishes and voltage is rapidly raised, and puts out electric arc
Go out.
In existing arc-chutes, if arc extinguishing grid pieces are more, the sub- arc voltage formed is more, relatively arc voltage
Can be higher, it thus can rapidly improve arc voltage and and then can limiting short-circuit current more quickly.In order to quickly eliminate short circuit
Electric current, it is desirable to be connected in parallel arc extinguishing grid pieces as much as possible, because so can rapidly improve arc voltage.Gone out however, improving
The quantity of arc grid can be by being limited, while can also be limited by technical specification, technology rule in equipment using space
Model defines minimum total the air gap as the summation of the air gap between single arc quenching plate and minimum leakage path as phase
Leakage path between adjacent piece.Therefore, industry is proposed to how effectively to strengthen arc quenching effect in the limited space of arc-chutes
Higher requirement.
The content of the invention
Task of the present utility model is to provide for a kind of space availability ratio height, arc quenching effect and obtains enhanced arc-control device.
What task of the present utility model was performed by, a kind of arc-control device of breaker, including arc extinguishing grid pieces component,
Described arc extinguishing grid pieces component includes a top arc extinguishing grid pieces, multiple middle arc extinguishing grid pieces and multiple bottom arc-chutes from top to bottom
Thickness arranged in parallel and bottom arc extinguishing grid pieces is more than described middle arc extinguishing grid pieces between piece, multiple bottom arc extinguishing grid pieces
Thickness, set in fan-shaped array between multiple middle arc extinguishing grid pieces.
In a specific embodiment of the present utility model, the quantity at least three of described bottom arc extinguishing grid pieces.
In another specific embodiment of the present utility model, described top arc extinguishing grid pieces have in centre one to
On arc leading angle.
Left and right arc separating wall and a pair of insulation arc insulating covers of the described arc-chutes also including the setting that faces each other, it is described
Arc extinguishing grid pieces component is arranged between left and right arc separating wall, and a pair of described insulation arc insulating covers are respectively arranged in left and right arc separating wall
On, and wrap the arc extinguishing grid pieces leg of bottom arc extinguishing grid pieces and middle arc extinguishing grid pieces, and described top arc extinguishing grid pieces
Arc extinguishing grid pieces leg is not wrapped in it, and unlimited passage is formed between a pair of arc insulating covers that insulate.
In another specific embodiment of the present utility model, described insulation arc insulating cover is made of gas exhausted material.
The utility model employs said structure, compared with prior art, has an advantageous effect in that：By changing arc extinguishing
The quantity and arrangement of the arc extinguishing grid pieces of different-thickness in grid component, meet the feelings in identical or even more high total the air gap
Under condition, arc voltage can be higher, and the arc quenching effect of this arc extinguishing grid pieces component can be more preferable.
Brief description of the drawings
Fig. 1 is structural representation of the breaker described in the utility model when closing a floodgate.
Fig. 2 is structure diagram of the breaker described in the utility model in separating brake.
Fig. 3 is the structural representation of the arc-control device of breaker described in the utility model.
Fig. 4 is the exploded perspective view of the arc-control device of breaker described in the utility model.
Fig. 5 is the structural representation of ferromagnetic material block described in the utility model and aerogenesis cover.
Fig. 6 is arc current schematic diagram in the arc-control device of breaker described in the utility model.
Fig. 7 is the structural representation of static contact described in the utility model.
Fig. 8 is the structural representation of aerogenesis cover described in the utility model.
In figure：1. housing；2 static contacts, 21. external terminals, 22. static contact panels, 221. beveled ends, 222.U shape bendings cavity volume,
223. mounting holes, 224, groove, 23. terminal plates, 24. striking portions, 241. connection ends, 242. elongated ends, 25. aerogenesis covers, 251.
Boss, 252. limited blocks, 26. ferromagnetic material blocks, 27. stationary contacts；Touched 3. moving contact, 31. acting arms, 311. lug bosses, 32. are moved
Point；4. operating mechanism；5. arc-chutes, 51. left and right arc separating walls, 511. holes, 52. arc extinguishing grid pieces groups, 521. top striking grid,
5211. arc leading angles, 5212. first arc extinguishing grid pieces legs, 522. middle arc extinguishing grid pieces, 5221. second arc extinguishing grid pieces legs, 523.
Bottom arc extinguishing grid pieces, 5231. the 3rd arc extinguishing grid pieces legs, 53. insulation arc insulating covers, 531. grid grooves, 532. mating surfaces, 5321.
It is raised；6. electric arc.
Embodiment
In order that the public can be fully understood by technical spirit of the present utility model and beneficial effect, applicant will combine below
Accompanying drawing is described in detail by embodiment of the present utility model, but description of the applicant to embodiment is not to technical scheme
Limitation, any changed in the form rather than substance according to the utility model design should all be considered as protection model of the present utility model
Enclose.
In the following description it is every be related to upper and lower, left and right, the directionality of front and rear or directionality concept be all
On the basis of the position shown in Fig. 1, thus the special limit of technical scheme provided the utility model can not be understood as
It is fixed.
Refer to Fig. 1 to Fig. 8, the utility model signal for a kind of high-tension moulded case circuit breaker of multibreak,
Abbreviation breaker.Described breaker can be two pole breakers, three-pole breaker or four-pole circuit breaker, this implementation
Example is by taking three-pole breaker as an example（As shown in Figure 1 and Figure 2）, it include housing 1, three couple being arranged in housing 1 cooperate it is quiet
Contact 2 and moving contact 3, act on moving contact 3 to realize closing of power circuit breaker and the operating mechanism 4 of breaking operation and three side by side
The arc-control device 5 of setting, its static contact 2, moving contact 3, operating mechanism 4, the set-up mode of arc-chutes 5 belong to known technology, and
Puzzlement will not be produced to the understanding of those skilled in the art, thus repeated no more herein.
As shown in Figure 3 and Figure 4, described arc-chutes 5 include the left and right arc separating wall 51 of setting of facing each other, it is left and right every
Arc extinguishing grid pieces group 52 between arc wall 51, the insulation arc insulating cover 53 being respectively arranged on left and right arc separating wall 51 for a pair, described goes out
Arc grid group 52 includes a top striking grid 521, some middle arc extinguishing grid pieces 522 and some bottom arc extinguishing grid pieces from top to bottom
523.There is a upward arc leading angle 5211 in the middle of described top striking grid 521；Described bottom arc extinguishing grid pieces 523 are excellent
Chip select number is at least three, and arranged in parallel.The thickness of bottom arc extinguishing grid pieces 523 described further be more than it is described in
Between arc extinguishing grid pieces 522, and some middle arc extinguishing grid pieces 522 in fan-shaped array set, the thickness of bottom arc extinguishing grid pieces 523 preferably
For 1.5-2 times of the thickness of middle arc extinguishing grid pieces 522；A pair of described insulation arc insulating covers 53 are close to left and right arc separating wall 51
Madial wall sets and wraps the second arc extinguishing grid pieces leg 5221 and the bottom arc extinguishing grid pieces 523 of middle arc extinguishing grid pieces 522
3rd arc extinguishing grid pieces leg 5231, and the first arc extinguishing grid pieces leg 5212 of described top arc extinguishing grid pieces 521 is not wrapped in it
It is interior, form unlimited passage between a pair of arc insulating covers 53 that insulate.Certainly, in additional embodiment, top arc extinguishing grid pieces 521
First arc extinguishing grid pieces leg 5212 can also be wrapped in a pair of insulation arc insulating covers 53.A pair of described insulation arc insulating covers 53 are used
Gas exhausted material is made.It is arranged at intervals with from top to bottom in the side towards arc extinguishing grid pieces inside a pair of described insulation arc insulating covers 53
Some grid grooves 531 for being used to assign for the second arc extinguishing grid pieces leg 5221 and the 3rd arc extinguishing grid pieces leg 5231, described one
To insulation arc insulating cover 53 in the mating surface 532 mutually fixed with left and right arc separating wall 51 provided with projection 5321, and left and right arc separating wall
Offered on 51 on the position corresponding with described projection 5321 for the hole 511 for raised 5321 inserting.
Such as Fig. 2 and with reference to shown in Fig. 7, static contact panel 22, terminal plate that described static contact 2 includes external terminal 21, taken the shape of the letter U
23, striking portion 24, ferromagnetic material block 26 and aerogenesis cover 25.Described external terminal 21 is in tabular, for connecting outside line；
Described one end of static contact panel 22 is provided with stationary contact 27；The described connection external terminal 21 of terminal plate 23 and static contact panel 22, it is described
External terminal 21 and static contact panel 22 realize that staggered floor is set by terminal plate 23, and external terminal 21 and static contact panel 22 and terminal plate
23 threes are formed in one structure.Described static contact panel 22 is in one end provided with stationary contact 27 downwards i.e. towards the inner side of static contact panel 22
It is tilted with beveled end 221.Described beveled end 221 is connected with striking portion 24, and described striking portion 24 has connection end 241
With elongated end 242, described connection end 241 and elongated end 242 are in open V-shaped, described connection end 241 and described stationary contact
The beveled end 221 of plate 22 electrically connects and is close to the neighbouring position of stationary contact 27, described connection end 241 preferably and U-shaped
The beveled end 221 of static contact panel 22 be arranged in parallel.Described elongated end 242 is close to terminal plate 23 and extends to the bottoms of arc-chutes 5
The downside of the lowermost end arc extinguishing grid pieces of arc extinguishing grid pieces 523 simultaneously be arranged in parallel with the bottom arc extinguishing grid pieces 523.So allow for production
Being born in the electric arc on the stationary contact 27 can quickly be moved under the attraction of arc-chutes 5 in described striking portion 24.Institute
The striking portion 24 stated can also be fixed on the static contact panel 22 of U-shaped in other way, such as welding, threaded connection, certain institute
The striking portion 24 stated can also by U-shaped the direct machine-shaping of static contact panel 22.
As shown in Figure 2 and with reference to Fig. 5 and Fig. 8, described aerogenesis cover 25 and the secure fit of static contact panel 22 of U-shaped, and house
In the U-shaped bending cavity volume 222 of static contact panel 22, and width range of the profile without departing from the static contact panel 22 of U-shaped of aerogenesis cover 25.Should
Provided with the assembling structure matched with the feature of aerogenesis cover 25 in the U-shaped bending cavity volume 222 of static contact panel 22, positioned for aerogenesis cover 25,
Other parts need not be added to position to aerogenesis cover 25；It is preferred that the assembling structure of static contact panel 22 of aerogenesis cover 25 and U-shaped be：Institute
Have what is opened up on boss 251 and limited block 252, described boss 251 and the static contact panel 22 of U-shaped on the bottom of aerogenesis cover 25 stated
Mounting hole 223, which coordinates, to be installed, and described limited block 252 engages spacing with groove 224.Described aerogenesis cover 25 is preferably from insulation
Gas exhausted material, described ferromagnetic material block 26 is contained in aerogenesis cover 25, and both form tight fit.By increasing in static contact 2
If ferromagnetic material block 26, electrodynamic repulsion force, enhancing during increase short circuit breaking blow the effect in magnetic magnetic field, and in ferromagnetic material block 26
The aerogenesis cover 25 being made up of insulation gas exhausted material, the gaseous state to arc extinction advantageous effect can be produced when electric arc occurs
Compound, effectively increases the air pressure in arc-chutes 5, at the beginning of the reprimand of moving contact 3 opens electric arc generation, makes the ambient air pressure of static contact 2 fast
Speed increase, is opened so that moving contact 3 is more rapidly denounceed, and is enhanced the air-blowing effect of arc-chutes 5, is reduced electric arc on static contact 2
Residence time, accelerate electric arc and enter arc-chutes 5, also increase the insulation arc insulating cover 53 of aerogenesis sideways in arc-chutes 5, pass through aerogenesis material
The aerogenesis of material, the higher-pressure region for forming relative closure, accelerate electric arc to enter the speed of arc-chutes 5 and prevent running helter-skelter for electric arc, improve
The breaking capacity of breaker.
See Fig. 1 and Fig. 2 is combined, described moving contact 3 includes acting arm 31 and movable contact 32, the acting arm 31
End has upward lug boss 311.See Fig. 6, moving contact 3 and the feelings in an open position of static contact 2 in the utility model
Shape.When breaker is low-voltage circuit breaker disjunction fault current, moving contact 3 is acted on as the electric power produced by fault current simultaneously
On static contact 2, then moving contact 3 is opened by rapid reprimand, so that electric arc 6 illustrated in Figure 6 is elongated rapidly, utilizes the electricity of growth
Arc voltage, reaches the effect that limiting short-circuit current increases, is improved the connecting-disconnecting function of breaker.In above process, move
Contact 3 is moved upwards under electrodynamic action, top striking grid from the movable contact 32 (Fig. 6 shows) of moving contact 3 to arc-chutes 5
521 direction is close rapidly, in moving contact 3 and static contact 2 in an open position, the electric arc arc of the end surface of acting arm 31
Root is transferred in the presence of arc blow-out power on top lug boss 311, and the lug boss 311 is arranged on acting arm in a state of use
31 towards on the end of the side of top striking grid 521, i.e. the top of acting arm 31（The disconnection direction of moving contact 3 is taken as top
In the case of）, the centre of the top striking grid 521 of described arc-chutes 5 has upward arc leading angle 5211, arc leading angle 5211
Air is breakdown between lug boss 311, produces electric arc, thus arc leading angle 5211 of the electric arc by top striking grid 521, draw
Gap and lug boss 311 and acting arm 31 between arc angle 5211 and lug boss 311, form the electric current of " several " font
Path, the current path for being somebody's turn to do " several " font causes the electric arc between top striking grid 521 and lug boss 311 to be transported towards top
It is dynamic, i.e. as the direction shown in arrow F in Fig. 6.Therefore it is more beneficial for electric arc to enter in the arc extinguishing grid pieces group 52 of arc-chutes 5, now
Gone out by the electric arc of multiple short arcs series connection of upper short arc, multiple short arcs of middle arc extinguishing grid pieces 522 and bottom arc extinguishing grid pieces 523
Formed in arc chamber 5, be more beneficial for electric arc and effectively cut by arc-chutes 5, it is sufficiently cool, so as to improve the breaking capacity of breaker.
Claims (5)
1. a kind of arc-control device of breaker, including arc extinguishing grid pieces component (52), it is characterised in that described arc extinguishing grid pieces component
(52) a top arc extinguishing grid pieces (521), multiple middle arc extinguishing grid pieces (522) and multiple bottom arc extinguishing grid pieces are included from top to bottom
(523) described in, thickness arranged in parallel and bottom arc extinguishing grid pieces (523) is more than between multiple bottom arc extinguishing grid pieces (523)
Middle arc extinguishing grid pieces (522) thickness, set in fan-shaped array between multiple middle arc extinguishing grid pieces (522).
2. the arc-control device of breaker according to claim 1, it is characterised in that described bottom arc extinguishing grid pieces (523)
Quantity at least three.
3. the arc-control device of breaker according to claim 1, it is characterised in that described top arc extinguishing grid pieces (521) exist
Centre has a upward arc leading angle (5211).
4. the arc-control device of breaker according to claim 1, it is characterised in that described arc-control device is also included each other
The left and right arc separating wall (51) set face-to-face and a pair of insulation arc insulating covers (53), described arc extinguishing grid pieces component (52) are arranged on
Between left and right arc separating wall (51), a pair of described insulation arc insulating covers (53) are respectively arranged on left and right arc separating wall (51), and
Wrap the arc extinguishing grid pieces leg of bottom arc extinguishing grid pieces (523) and middle arc extinguishing grid pieces (522), and described top arc extinguishing grid pieces
(521) arc extinguishing grid pieces leg is not wrapped in it, and unlimited passage is formed between a pair of arc insulating covers (53) that insulate.
5. the arc-control device of breaker according to claim 4, it is characterised in that described insulation arc insulating cover (53) is used
Gas exhausted material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017075.XU CN206363976U (en) | 2017-01-06 | 2017-01-06 | The arc-control device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017075.XU CN206363976U (en) | 2017-01-06 | 2017-01-06 | The arc-control device of breaker |
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| Publication Number | Publication Date |
|---|---|
| CN206363976U true CN206363976U (en) | 2017-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720017075.XU Active CN206363976U (en) | 2017-01-06 | 2017-01-06 | The arc-control device of breaker |
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| CN (1) | CN206363976U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320950A (en) * | 2018-01-23 | 2018-07-24 | 首瑞（天津）电气设备有限公司 | Arc quenching system and its arc-chutes |
| CN109119305A (en) * | 2018-09-17 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of air-sweeping type arc-chutes and air-blowing structure for residual current circuit breaker |
| CN109920669A (en) * | 2019-04-10 | 2019-06-21 | 北京北元电器有限公司 | A kind of arc-control device and arc-suppressing method with monoblock type arc insulating cover |
| CN109119305B (en) * | 2018-09-17 | 2024-06-04 | 浙江天正电气股份有限公司 | Air-blowing type arc extinguishing chamber and air-blowing structure for residual current circuit breaker |
-
2017
- 2017-01-06 CN CN201720017075.XU patent/CN206363976U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320950A (en) * | 2018-01-23 | 2018-07-24 | 首瑞（天津）电气设备有限公司 | Arc quenching system and its arc-chutes |
| CN109119305A (en) * | 2018-09-17 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of air-sweeping type arc-chutes and air-blowing structure for residual current circuit breaker |
| CN109119305B (en) * | 2018-09-17 | 2024-06-04 | 浙江天正电气股份有限公司 | Air-blowing type arc extinguishing chamber and air-blowing structure for residual current circuit breaker |
| CN109920669A (en) * | 2019-04-10 | 2019-06-21 | 北京北元电器有限公司 | A kind of arc-control device and arc-suppressing method with monoblock type arc insulating cover |
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