CN208208700U - A kind of arc-chutes of breaker - Google Patents
A kind of arc-chutes of breaker Download PDFInfo
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- CN208208700U CN208208700U CN201820570562.3U CN201820570562U CN208208700U CN 208208700 U CN208208700 U CN 208208700U CN 201820570562 U CN201820570562 U CN 201820570562U CN 208208700 U CN208208700 U CN 208208700U
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- arc
- arc extinguishing
- grid pieces
- extinguishing grid
- chutes
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Abstract
The utility model discloses a kind of arc-chutes of breaker, it is characterized by: the arc-chutes (1) include left clapboard (101) and right clapboard (102), arc extinguishing grid pieces group (103) both ends are inserted into respectively on the left clapboard (101) and right clapboard (102), arc extinguishing grid pieces group (103) upper end is equipped with top arc extinguishing grid pieces (104), the both ends of top arc extinguishing grid pieces (104) are inserted on the left clapboard (101) and right clapboard (102), striking grid (105) are equipped with above the top arc extinguishing grid pieces (104), the striking grid (105) is inserted on the left clapboard (101) and right clapboard (102).The arc-chutes of the breaker enhance the arc extinction ability of arc-chutes by the improvement to arc-extinguishing chamber of circuit breaker arc extinguishing grid pieces arrangement mode, it is ensured that the electrical endurance and breaking capacity of frame circuit breaker reach relevant criterion requirement.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and specifically technology is related to a kind of arc-chutes of breaker, fits
For direct current and AC power supply system.
Background technique
Breaker is most important controller switching equipment in low-voltage distribution system, with power engineering team power supply and equipment for power transmission and distribution
It is required that continuous improvement, miniaturization, high-performance, modularization, height also higher and higher to the performance requirement for circuit protecting switch
Reliability is the main direction of development of air-break circuit-breaker at this stage.Contact and arc quenching system are the important components of breaker,
Contact shape and size design in contact system is very crucial, is directly related to the electrical endurance and breaking capacity of breaker.
Meanwhile as new energy is grown rapidly, direct current power system has also obtained significant progress.And existing common frame
Frame breaker is mainly used in AC electric power systems, and the frame circuit breaker for DC power system is less.Due to direct current system
Opposite AC system of uniting does not have natural zero crossing phenomenon, cannot be extinguished as exchange using the moment of alternating current zero passage
Electric arc, can only be by rapid elongation and cooling electric arc, and making arc voltage is more than supply voltage, then by arc extinction, so putting out
Arc is more difficult.Therefore the extinguishing of direct-current arc is very difficult.Chinese patent ZL201621171400.X discloses a kind of direct current
Breaker of plastic casing arc quenching system, including static contact, and the arc-chutes and arc-extinguish chamber that are arranged on static contact, the arc extinguishing
Room includes that two pieces of flash barriers, and the arc extinguishing grid pieces being disposed in an evenly spaced relation between two pieces of flash barriers, institute is arranged on static contact
The arc-extinguish chamber stated includes two pieces of sidings at the interval being tightly disposed on static contact, and one end of two pieces of sidings also abuts described
Arc extinguishing grid pieces, so that arc-extinguish chamber, arc-chutes and static contact three cooperatively form the gas chamber of a relative closure, it is dynamic in breaker
Contact is i.e. in the gas indoor sport.It is difficult that the direct current breaker of plastic casing solves the problems, such as low current blow-out, and improves it
The ability etc. of short circuit breaking.But the electric arc that the breaker generates can not extinguish completely, being easy spilling arc-chutes makes breaker
With generation security risk.
Utility model content
The purpose of this utility model provides one kind aiming at the existing quenchless technical problem of frame circuit breaker electric arc
The arc-chutes of breaker, by the improvement to arc-extinguishing chamber of circuit breaker arc extinguishing grid pieces arrangement mode, the electric arc for enhancing arc-chutes is put out
It goes out ability, it is ensured that the electrical endurance and breaking capacity of frame circuit breaker reach relevant criterion requirement.
Technical solution
In order to achieve the above technical purposes, the utility model devises a kind of arc-chutes of breaker, it is characterised in that: institute
Stating arc-chutes includes left clapboard and right clapboard, and arc extinguishing grid pieces group both ends are inserted into respectively on the left clapboard and right clapboard, described
Arc extinguishing grid pieces group upper end is equipped with top arc extinguishing grid pieces, and the both ends of the top arc extinguishing grid pieces are inserted on the left clapboard and right clapboard,
Striking grid is equipped with above the top arc extinguishing grid pieces, the striking grid is inserted on the left clapboard and right clapboard, described to go out
Foot is stretched out in arc grid group front end two sides, produces gas hood and is coated with foot below the top arc extinguishing grid pieces.
Further, the arc extinguishing grid pieces group includes several arc extinguishing grid pieces, is equidistantly arranged between several arc extinguishing grid pieces,
The horizontal distance of several arc extinguishing grid pieces and preceding stationary contact gradually becomes far since arc extinguishing grid pieces group bottom is upwards, then arrives and goes out
Gradually become close in the middle part of arc grid group, then gradually becomes remote again upwards in the middle part of arc extinguishing grid pieces group, finally arrive at the top of arc extinguishing grid pieces group
Striking grid gradually becomes closely in the figure of three.
Further, the production gas hood inner cavity is the figure of three corresponding with the arc extinguishing grid pieces group.
Preferably, the arc extinguishing grid pieces group includes that 18 arc extinguishing grid pieces are bottom-up equally arranges, 18 arc-chutes
By closely gradually becoming remote, the 12nd and 13 goes out bottom-up 1st distance to preceding stationary contact horizontal direction described in the 11st pitch of fins of piece
Arc grid becomes closely again away from the distance of the preceding stationary contact horizontal direction, and the 14th to the 18th arc extinguishing grid pieces are away from the preceding stationary contact water
Square to distance again by closely gradually becoming remote, distance of the last striking grid away from preceding stationary contact horizontal direction becomes close again.
Beneficial effect
The arc-chutes of a kind of breaker provided by the utility model, by arc-extinguishing chamber of circuit breaker arc extinguishing grid pieces arrangement mode
Improvement, enhance the arc extinction ability of arc-chutes, it is ensured that frame circuit breaker electrical endurance and disjunction in direct current system
Ability reaches relevant criterion requirement.Meanwhile also can apply to AC system by practicing the breaker, it is equally also able to satisfy quickly
Extinguish the requirement of electric arc.
Detailed description of the invention
Attached drawing 1a is the product schematic diagram of arc quenching system in the utility model embodiment.
Attached drawing 1b is the schematic diagram of product structure of arc quenching system in the utility model embodiment.
Attached drawing 2 is the decomposition texture schematic diagram of arc quenching system in the utility model embodiment.
Attached drawing 3 is that contact system is located at positional structure schematic diagram in arc-chutes in the utility model embodiment.
Attached drawing 4 is contact system structure schematic diagram during the utility model is implemented.
Attached drawing 5 is long moving contact component structural schematic diagram during the utility model is implemented.
Attached drawing 6 is short moving contact component structural schematic diagram during the utility model is implemented.
Attached drawing 7 is arc-chutes schematic diagram of internal structure during the utility model is implemented.
Attached drawing 8 is arc chute chip architecture schematic diagram in the utility model embodiment.
Attached drawing 9 is top arc chute chip architecture schematic diagram in the utility model embodiment.
Attached drawing 10 is striking grid structural schematic diagram in the utility model embodiment.
Attached drawing 11 is arc leading angle structural schematic diagram in the utility model embodiment.
Attached drawing 12 is contact system engaging process structural schematic diagram in the utility model embodiment.
Attached drawing 13 is contact system breaking course structural schematic diagram in the utility model embodiment.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in further details.
Embodiment
As shown in attached drawing 1a, 1b and 2, a kind of arc quenching system of breaker, it includes arc-chutes 1 and contact system 2, described
Contact system 2 includes movable contact system 201 and static contact system 202, the movable contact system 201 and static contact system 202
Engagement or disjunction control the on-off of breaker circuit, in which:
As shown in Fig. 4, the movable contact system 201 includes long moving contact component 201a, the long moving contact component
The two sides 201a are arranged symmetrically short moving contact component 201b side by side, and the long moving contact component 201a is than the short moving contact component
201b long, the long moving contact component 201a and short moving contact component 201b can be rotated around same rotation center, such as 5 institute of attached drawing
Show, front and back is successively arranged preceding long movable contact 201a01 and rear long movable contact 201a02 on the long moving contact component 201a, such as attached
Shown in Fig. 6, the short moving contact component 201b is equipped with short movable contact 201b01, the rear long movable contact 201a02 and short dynamic touching
Point 201b01 is located at same level, long movable contact 201a02 and short movable contact after the preceding long movable contact 201a01 is located at
Above 201b01；
As shown in attached drawing 2,3 and 4, the static contact system 202 includes static contact panel 202a, and the static contact panel 202a is equipped with
Preceding stationary contact 202a01 and rear stationary contact 202a02, the preceding stationary contact 202a01 are corresponding with the preceding long movable contact 201a01,
Stationary contact 202a02 is corresponding with rear long movable contact 201a02 and short movable contact 201b01 after described；As shown in Fig. 3, described preceding quiet
Contact 202a01 and the preceding long movable contact 201a01 are located inside arc-chutes 1, the rear stationary contact 202a02, rear long movable contact
201a02 and short movable contact 201b01 are located at outside arc-chutes 1；
It is the preceding long movable contact 201a01, rear long movable contact 201a02, short movable contact 201b01, preceding quiet in the present embodiment
Contact 202a01, rear stationary contact 202a02 respectively with corresponding long moving contact component 201a, short moving contact component 201b, static contact panel
202a is made of same or different material, and corresponding structure is made into split type or integral type.
As shown in attached drawing 1a, 1b, 2 and 3, the arc-chutes 1 include left clapboard 101 and right clapboard 102, arc extinguishing grid pieces group
103 both ends are inserted into respectively on the left clapboard 101 and right clapboard 102, as shown in attached drawing 7,8 and 9, the arc extinguishing grid pieces group
103 upper ends are equipped with top arc extinguishing grid pieces 104, and the both ends of the top arc extinguishing grid pieces 104 are inserted into the left clapboard 101 and right clapboard
On 102, striking grid 105 is equipped with above the top arc extinguishing grid pieces 104, the striking grid 105 is inserted into the left clapboard 101
On right clapboard 102, foot 103a01 is stretched out in the 103 front end two sides of arc extinguishing grid pieces group, produces gas hood 106 and is coated with foot
103a01 is located at 104 lower section of top arc extinguishing grid pieces, and the preceding stationary contact 202a01 is located at the preceding long movable contact 201a01
In the spark chamber room that the left clapboard 101, right clapboard 102, arc extinguishing grid pieces group 103 and production gas hood 106 are formed.The arc extinguishing grid pieces
Group 103 includes several arc extinguishing grid pieces 103a, is equidistantly arranged between several arc extinguishing grid pieces 103a, several arc extinguishing grid pieces
The horizontal distance of the 103a and preceding stationary contact 202a01 gradually becomes far since 103 bottom of arc extinguishing grid pieces group is upwards, then arrives
103 middle part of arc extinguishing grid pieces group gradually becomes close, then gradually becomes remote again upwards from 103 middle part of arc extinguishing grid pieces group, finally arrives arc-chute
103 top striking grid 105 of piece group gradually becomes closely in the figure of three.106 inner cavity of production gas hood is and the arc extinguishing grid pieces group
The 103 corresponding figure of three.In particular, be exactly in the present embodiment arc extinguishing grid pieces group 103 it is total comprising 18 arc extinguishing grid pieces 103a
It is bottom-up equally to arrange；Bottom-up 1st of 18 arc extinguishing grid pieces 103a are to stationary contact 202a01 water before the 11st pitch of fins
Square to distance gradually become remote by closely；12nd and the 13rd arc extinguishing grid pieces 103a away from preceding stationary contact 202a01 horizontal direction away from
It is close from change again；Distance of 14th to the 18 arc extinguishing grid pieces 103a away from preceding stationary contact 202a01 horizontal direction is again by closely gradually becoming
Far；Last 105 distance away from preceding stationary contact 202a01 horizontal direction of striking grid becomes close again.
As shown in Fig. 10, the arc end 105a of the striking grid 105 is three downward bending structures.Such as attached drawing 2,3
Shown in 4, the contact end 201a03 of the long moving contact component 201a is in upper hook shape protrusion, the long moving contact component 201a
The outer profile of hook protrusion contact end 201a03 be triangular shaped, and front end wedge angle is obtuse angle, and wedge angle point is located at triangle
Middle and lower part position, the contact end 201b02 of the short moving contact component 201b is hook protrusion, the short moving contact component
The outer profile of the hook protrusion contact end 201b02 of 201b is arc-shaped.The movable contact system 201 and the static contact system
When 202 disjunction, between the arc end 105a of the striking grid 105 and the contact end 201a03 of the long moving contact component 201a
It is capable of forming the current path of M shape.
Meanwhile as shown in Fig. 4, the front that the front end of the static contact panel 202a is located at preceding stationary contact 202a01 is equipped with striking
Angle 202a03, the rear end of the arc leading angle 202a03 is concordant with the preceding stationary contact 202a01, as shown in Fig. 11, the striking
Angle 202a03 is trapezoidal dovetail shaped, and the width of the arc leading angle 202a03 is quiet before preceding stationary contact 202,a01 mono- is laterally away from from being located at
The side of contact 202a01 becomes larger.The electromagnetism at the end stationary contact 202a01 before trapezoidal swallow-tailed arc leading angle 202a03 will be increased
More advantageous electric arc is transferred out by field intensity from preceding stationary contact 202a01, and at the same time, the arc extinguishing grid pieces group 103 of 3 fonts also will
The transfer of the enhancing electric arc of magnetic field strength acceleration herein, leads to rapidly 103 bottom of arc extinguishing grid pieces group for electric arc arc root and shifts to arc extinguishing
1 rear end of room helps elongating arc length and improves arc voltage, improves breaking arc ability.
As shown in Fig. 12, in 202 engaging process of the movable contact system 201 and the static contact system, before described
Prior to the rear stationary contact 202a02 and the rear long movable contact between stationary contact 202a01 and the preceding long movable contact 201a01
It is contacted between 201a02 and short movable contact 201b01；
As shown in Fig. 13, in 202 breaking course of the movable contact system 201 and the static contact system, before described
In the rear stationary contact 202a02 and the rear long movable contact after between stationary contact 202a01 and the preceding long movable contact 201a01
Disjunction between 201a02 and short movable contact 201b01.
Due to after between the preceding stationary contact 202a01 and the preceding long movable contact 201a01 after described stationary contact
Disjunction between 202a02 and the rear long movable contact 201a02 and short movable contact 201b01, therefore electric arc only will appear in preceding stationary contact
Between point 202a01 and the preceding long movable contact 201a01.Under air dielectric, preceding stationary contact 202a01 and preceding long movable contact
201a01 disjunction moment, contact position resistance and temperature are continuously increased, when temperature reaches contact material fusion temperature, contact point
Place forms the metal bridge of fusing metal, and preceding long movable contact 201a01, which continues to disconnect, can break metal bridge and generate electric arc, starting point
Combustion electric arc is the metal vapors by preceding stationary contact 202a01 and preceding long movable contact 201a01, then after electric arc is elongated, week
It encloses air dielectric and steps into arc gap and metallic phase arc is changed by the gaseous phase arc of free support.Gaseous phase arc is by preceding quiet
Contact 202a01 is constantly elongated with preceding long movable contact 201a01, while arc extinguishing grid pieces group 103, production gas hood 106 are total in arc-chutes 1
Reach final extinguishing under same-action.It is dynamic that the utility model realizes stationary contact 202a01 and the preceding length before electric arc only results from
Between the 201a01 of contact, i.e., electric arc directly results from inside arc-chutes 1, eliminates electric arc and is transferred to inside outside arc-chutes 1
Process；Meanwhile the electric arc inside arc-chutes 1 is resulted from, it is incited somebody to action in narrow meet in space that arc extinguishing grid pieces group 103, production gas hood 106 are formed
Significantly more efficient compression and cooling electric arc increase arc resistance and improve arc voltage, and final realize extinguishes electric arc faster.
The arc-chutes of a kind of breaker provided by the utility model, by arc-extinguishing chamber of circuit breaker arc extinguishing grid pieces arrangement mode
Improvement, enhance the arc extinction ability of arc-chutes, it is ensured that frame circuit breaker electrical endurance and disjunction in direct current system
Ability reaches relevant criterion requirement.Meanwhile also can apply to AC system by practicing the breaker, it is equally also able to satisfy quickly
Extinguish the requirement of electric arc.
The embodiments of the present invention structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification
Revealed content is not intended to limit the utility model enforceable limit so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences still fall in the revealed skill of the utility model under the effect of the utility model can be generated and the purpose that can reach
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre ",
The term of " clockwise ", " counterclockwise " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
Claims (4)
1. a kind of arc-chutes of breaker, it is characterised in that: the arc-chutes (1) include left clapboard (101) and right clapboard
(102), arc extinguishing grid pieces group (103) both ends are inserted into respectively on the left clapboard (101) and right clapboard (102), the arc-chute
Piece group (103) upper end is equipped with top arc extinguishing grid pieces (104), and the both ends of top arc extinguishing grid pieces (104) are inserted into the left clapboard
(101) and on right clapboard (102), striking grid (105) are equipped with above the top arc extinguishing grid pieces (104), the striking grid
(105) it is inserted on the left clapboard (101) and right clapboard (102), foot is stretched out in arc extinguishing grid pieces group (103) the front end two sides
(103a01) produces gas hood (106) and is coated with foot (103a01) below the top arc extinguishing grid pieces (104).
2. a kind of arc-chutes of breaker as described in claim 1, it is characterised in that: the arc extinguishing grid pieces group (103) includes
Several arc extinguishing grid pieces (103a) equidistantly arrange between several arc extinguishing grid pieces (103a), several arc extinguishing grid pieces
Far, then the horizontal distance of (103a) and preceding stationary contact (202a01) gradually becomes since arc extinguishing grid pieces group (103) bottom is upwards
Gradually become close in the middle part of to arc extinguishing grid pieces group (103), then gradually becomes remote again upwards in the middle part of arc extinguishing grid pieces group (103), finally arrive
It is closely in the figure of three that striking grid (105), which gradually becomes, at the top of arc extinguishing grid pieces group (103).
3. a kind of arc-chutes of breaker as claimed in claim 2, it is characterised in that: the productions gas hood (106) inner cavity for
The corresponding figure of three of the arc extinguishing grid pieces group (103).
4. a kind of arc-chutes of breaker as claimed in claim 2, it is characterised in that: the arc extinguishing grid pieces group (103) includes
18 arc extinguishing grid pieces (103a) are bottom-up equally to be arranged, and 18 arc extinguishing grid pieces (103a) bottom-up 1st to the 11st
The distance of preceding stationary contact (202a01) horizontal direction described in a pitch of fins by closely gradually becoming remote, the 12nd and 13 arc extinguishing grid pieces (103a) away from
The distance of preceding stationary contact (202a01) horizontal direction becomes closely again, and the 14th to the 18th arc extinguishing grid pieces (103a) are away from described preceding quiet
The distance of contact (202a01) horizontal direction is again by closely gradually becoming remote, and last striking grid (105) is away from preceding stationary contact
The distance of (202a01) horizontal direction becomes close again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570562.3U CN208208700U (en) | 2018-04-20 | 2018-04-20 | A kind of arc-chutes of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570562.3U CN208208700U (en) | 2018-04-20 | 2018-04-20 | A kind of arc-chutes of breaker |
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| Publication Number | Publication Date |
|---|---|
| CN208208700U true CN208208700U (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820570562.3U Active CN208208700U (en) | 2018-04-20 | 2018-04-20 | A kind of arc-chutes of breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538688A (en) * | 2018-04-20 | 2018-09-14 | 上海良信电器股份有限公司 | A kind of arc-chutes of breaker |
-
2018
- 2018-04-20 CN CN201820570562.3U patent/CN208208700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538688A (en) * | 2018-04-20 | 2018-09-14 | 上海良信电器股份有限公司 | A kind of arc-chutes of breaker |
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