CN108269709A - The arc-chutes of breaker - Google Patents
The arc-chutes of breaker Download PDFInfo
- Publication number
- CN108269709A CN108269709A CN201710000531.4A CN201710000531A CN108269709A CN 108269709 A CN108269709 A CN 108269709A CN 201710000531 A CN201710000531 A CN 201710000531A CN 108269709 A CN108269709 A CN 108269709A
- Authority
- CN
- China
- Prior art keywords
- grid
- arc
- group
- chutes
- contact mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Abstract
The arc-chutes of breaker, arc-chutes are arranged on the side of the contact mechanism of breaker, including mounting bracket, the first grid group and the second grid group, first grid group and the second grid group are mounted in mounting bracket one on the other along the closing direction of contact mechanism, first grid group includes the multiple longitudinal grid separately set, and the second grid group includes the multiple lateral grid separately set；Also, it connects and is connected between the first lateral grid nearest from the first grid group in the first longitudinal direction grid farthest from contact mechanism and the second grid group in the first grid group.The present invention provides a kind of arc-chutes of breaker, by two grid groups for being equipped with horizontal and vertical setting, and conducting is connected between lateral grid farthest from static contact in longitudinal grid farthest from moving contact and the grid group being oppositely arranged with static contact in the grid group being oppositely arranged with moving contact, the trend of correct guidance electric arc, electric arc is elongated to the maximum extent, achievees the effect that quick, thorough blow-out.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, and in particular to a kind of arc-chutes of breaker.
Background technology
The ability of arc-chutes extinguishing electric arc directly affects the breaking capacity and electric life of breaker, determines the electricity consumption of breaker
Safety.Existing arc-extinguishing chamber of circuit breaker generates field drives electric arc by contact galvanic circle and enters arc-chutes, passes through grid
Long arc is cut into multistage short arc, so as to improve arc voltage, realizes blow-out.It is existing research shows that, long arc cutting go out
Arc grid quantity is more, and arc voltage is higher, and the arc energy that can extinguish is bigger, and disjunction and electric life performance are better.In order to
Enough arc-rupturing capacities for effectively promoting arc-chutes, arc quenching chamber structure need to have following characteristics：The cloth in identical arc-chutes cavity
More arc extinguishing grid pieces are put, improve the possibility of the arc extinguishing grid pieces quantity of long arc cutting；Arc-chutes have suitable current path
Planning and structural measure, it is ensured that the grid that long arc can be arranged fully is cut；Arc-chutes, which have, promotes electric arc cutting grid
Structure improves the utilization rate of grid.
Existing arc-extinguishing chamber of circuit breaker, grid is generally using approximately parallel arrangement mode, the grid quantity arranged
It is limited by arc-chutes height, affects the disjunction of product and the promotion of electric life performance.
Invention content
The defects of it is an object of the invention to overcome the prior art, provides a kind of simple in structure, compact in design rationally and puts out
The arc-chutes of the high breaker of arc ability.
To achieve the above object, present invention employs following technical solutions：
A kind of arc-chutes of breaker, the arc-chutes are arranged on the side of the contact mechanism of breaker, including installation branch
Frame 1, the first grid group 2 and the second grid group 3, the closing direction of the first grid group 2 and the second grid group 3 along contact mechanism
It being mounted in mounting bracket 1 one on the other, the first grid group 2 includes the multiple longitudinal grid separately set, and described the
Two grid groups 3 include the multiple lateral grid separately set；It is also, farthest from contact mechanism in the first grid group 2
It connects and leads between the first transverse direction grid 31 nearest from the first grid group 2 in first longitudinal direction grid 21 and the second grid group 3
It is logical.
Preferably, it is connected and is connected by conduct piece 5 between the lateral grid 31 of the first longitudinal direction grid 21 and first, it is described
One end of conduct piece 5 is connected to first longitudinal direction grid 21 on one end of the second grid group 3, the other end connection of conduct piece 5
On the first lateral side of the grid 31 far from contact mechanism.
Preferably, integrally connected realizes connection conducting between the lateral grid 31 of the first longitudinal direction grid 21 and first.
Preferably, the described first lateral grid 31 protrudes from first longitudinal direction grid 21 in the side far from contact mechanism, the
Bending part 6 is equipped at integrally connected between one longitudinal lateral grid 31 of grid 21 and first, the bending part 6 includes straightway 61
With arc section 62, one end of the straightway 61 is connect with one end of arc section 62, the other end and first longitudinal direction of straightway 61
Grid 21 is connected close to one end of the second grid group 3, and the other end of the arc section 62 and the first lateral grid 31 are far from contact
The side connection of mechanism.
Preferably, grid is equipped with the first notch on one end close to the second grid group 3 longitudinally in each, longitudinally in each grid
The second notch is equipped on the side close to contact mechanism.
Preferably, the run-on tab 4 being arranged between the first grid group 2 and contact mechanism is further included, the one of the run-on tab 4
Hold as connecting pin 41, connect with second longitudinal direction grid 22 nearest from contact mechanism in the first grid group 2, run-on tab 4 it is another
It holds as arc end 42, between the moving contact 7 of contact mechanism under second longitudinal direction grid 22 and opening state.
Preferably, the arc end 42 of the run-on tab 4 is parallel and alternate with the side of moving contact 7 against the first grid group 2
Every setting.
Preferably, longitudinally A is closed the contact mechanism, is arranged in parallel, and between the multiple longitudinal direction grid with indulging
There is angle α, the angle α is acute angle so that the distance of the bottom end of grid to contact mechanism is less than longitudinally in each between axis A
Its top is to the distance of contact mechanism；It is arranged in parallel, and there is angle β between transversal line B between the multiple transverse direction grid,
The angle β is acute angle so that each side of the transverse direction grid far from contact mechanism is higher than its opposite side close to contact mechanism.
Preferably, the first grid group 2 is separately set with the second grid group 3, and the multiple longitudinal grid and the
The distance that one lateral grid 31 is spaced is equal.
Preferably, 0 degree of 10 degree of ＜ angle αs ＜；0 degree of 10 degree of ＜ angle β ＜.
The arc-chutes of the breaker of the present invention by being equipped with two grid groups of horizontal and vertical setting, are rationally utilized and are gone out
The space of arc, the more grid of interior arrangement, improves the arc-rupturing capacity of arc-chutes, particularly, is touched with dynamic in a limited space
From stationary contact in longitudinal grid farthest from moving contact and the grid group being oppositely arranged with static contact in the grid group that is oppositely arranged of head
Conducting is connected between the farthest lateral grid of head, electric arc is elongated, reaches fast by the trend of correct guidance electric arc to the maximum extent
The effect of fast, thorough blow-out, promotes the capacity of arc-chutes and the utilization rate of grid；The structure of arc-chutes is simple, and integral layout is tight
Reason is gathered together, conducive to the design of miniaturization, blow-out efficiency and reliability is high, greatly improves the arc-rupturing capacity of arc-chutes, promotes open circuit
The breaking capacity of device and electric life performance.
Description of the drawings
Fig. 1 is the structure diagram of the arc-chutes of the embodiment of the present invention one；
Fig. 2 is that the electric arc of connectionless conducting structure between first, second grid group moves towards schematic diagram；
Fig. 3 is that the electric arc of the embodiment of the present invention one moves towards schematic diagram；
Fig. 4 is that the electric arc of the embodiment of the present invention two moves towards schematic diagram.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 4 provides, the specific reality of the arc-chutes of the breaker further illustrated the present invention
Apply mode.The arc-chutes of the breaker of the present invention are not limited to the following description.
As shown in Figure 1, the breaker of the present invention includes arc-chutes and contact mechanism, the contact mechanism includes being oppositely arranged
Moving contact 7 and static contact 8, wherein the static contact 8 is arranged on the conductive plate 9 below arc-chutes, moving contact 7 is from upper
It realizes to be closed with static contact 8 toward lower swing and connect, the arc-chutes are arranged on the side of contact mechanism, including mounting bracket 1, the
One grid group 2 and the second grid group 3, the first grid group 2 and the second grid group 3 are along the closing direction one of contact mechanism one
It is mounted in mounting bracket 1 down, the first grid group 2 includes the multiple longitudinal grid separately set, the multiple longitudinal direction
Grid is arranged in order along the vertical direction of contact mechanism closing direction so that multiple longitudinal direction grid are gradually distance from contact mechanism, institute
State multiple lateral grid that the second grid group 3 includes separately setting, closure side of the multiple transverse direction grid along contact mechanism
To being arranged in order so that multiple transverse direction grid are gradually distance from the first grid group 2；Also, from contact machine in the first grid group 2
In the farthest first longitudinal direction grid 21 of structure and the second grid group 3 from 2 nearest first lateral grid 31 of the first grid group it
Between connect conducting.The longitudinal grid farthest from moving contact 7 in as the first grid group 2 of first longitudinal direction grid 21, the first lateral grid
Piece 31 is lateral grid farthest from static contact 8 in the second grid group 3.
When the moving contact 7 and static contact 8 of contact mechanism separate, electric arc can be generated, due to the magnetic fields of arc-chutes, one
Aspect, electric arc cut the first grid group 2 piecewise from moving contact 7；On the other hand, electric arc jumps to conductive plate 9 from static contact 8, by
Piece cuts the second grid group 3, so as to elongate electric arc.
Under normal conditions, separately setting is not connected between the grid of arc-chutes, to realize arc cutting.Fig. 2 shows
The electric arc of connectionless conducting structure moves towards schematic diagram between first grid group and the second grid group.Due to electric arc respectively transversely and
Longitudinal both direction cuts two grid groups, connectionless conducting structure between two grid groups in Fig. 2, and two grid groups
Electromagnetism force direction suffered by the short arc C of junction is intended to allow short arc C far from grid group so that short arc C be difficult to from
It is jumped in one grid group in another grid group, the electric arc between two grid groups is hardly turned on, and electric arc is caused to be difficult to fully
Cutting, the arc-rupturing capacity of arc-chutes are greatly reduced.Through inventor the study found that between the two grid groups not set in the same direction still
Unconnected mode is separately set using original, although increasing the quantity of grid, but still electric arc is caused to be difficult to fully cut
It cuts, arc blowout effect is undesirable.The arc-chutes of the present invention break through the intrinsic set-up mode of the prior art, using the first grid group 2 with
The mode of conducting is connected between second grid group 3, electric arc moves towards schematic diagram as shown in Figure 3 or Figure 4, allows arc energy in two grid
The junction of piece group is reliably connected, and forms Fig. 3 or shown in Fig. 4 electric arcs trend, makes arc energy can be fully in two groups of grid
The defects of cutting, effectively overcoming grid layout current trend aspect.
Therefore, arc-chutes of the invention by being equipped with two grid groups of horizontal and vertical setting, rationally utilize arc extinguishing
Space, interior more grid of arranging, improves the arc-rupturing capacity of arc-chutes, particularly, with moving contact phase in a limited space
To in longitudinal grid farthest from moving contact in the grid group of setting and the grid group being oppositely arranged with static contact from static contact most
Conducting is connected between remote lateral grid, the trend of correct guidance electric arc elongates electric arc to the maximum extent, reaches quick, thorough
The effect of bottom blow-out promotes the capacity of arc-chutes and the utilization rate of grid；The structure of arc-chutes is simple, the compact conjunction of integral layout
Reason, conducive to the design of miniaturization, blow-out efficiency and reliability is high, greatly improves the arc-rupturing capacity of arc-chutes, promotes breaker
Breaking capacity and electric life performance.
Specifically, grid is equipped with the first notch on one end close to the second grid group 3 longitudinally in each, longitudinally in each grid
The second notch is equipped on the side close to contact mechanism.
In addition, the arc-chutes of the present invention, further include the run-on tab 4 being arranged between the first grid group 2 and contact mechanism, institute
The one end for stating run-on tab 4 is connecting pin 41, is connect with second longitudinal direction grid 22 nearest from contact mechanism in the first grid group 2,
The other end of run-on tab 4 is arc end 42, positioned at contact mechanism under second longitudinal direction grid 22 and opening state moving contact 7 it
Between.The setting of run-on tab effectively guides the electric arc on moving contact to enter the first grid group so that electric arc can fully cut first
Grid group.Specifically, the connecting pin 41 of the run-on tab 4 is connected to the one end of second longitudinal direction grid 22 far from the second grid group 3
On, above the first notch of second longitudinal direction grid 22；The arc end 42 of the run-on tab 4 and moving contact 7 are against the first grid
The side of piece group 2 is parallel and separately sets.This structure design is easier to jump to run-on tab from moving contact conducive to electric arc, from
And enter the first grid group, improve the striking effect of run-on tab.
As shown in figure 3, the electric arc of the embodiment of the present invention one moves towards schematic diagram, the first longitudinal direction grid 21 and first is horizontal
It is connected and is connected by conduct piece 5 between grid 31, one end of the conduct piece 5 is connected to first longitudinal direction grid 21 close to second
On one end of grid group 3, the other end of conduct piece 5 is connected on the first lateral side of the grid 31 far from contact mechanism.It is conductive
Can be that connection is realized in welding, inserting or other means between part 5 and the lateral grid 31 of first longitudinal direction grid 21 and first.Using
During the mode of inserting, one end of conduct piece 5 is equipped with longitudinal socket coordinate with first longitudinal direction grid 21, the other end equipped with
The lateral socket that first lateral grid 31 coordinates.The setting of conduct piece, manufacture and installation easy to produce effectively avoid installing simultaneously
The alignment difficult problem of first longitudinal direction grid and the first lateral grid, improves installation effectiveness, reduces installation difficulty.
As shown in figure 4, the electric arc of the embodiment of the present invention two moves towards schematic diagram, the first longitudinal direction grid 21 and first is horizontal
Integrally connected realizes connection conducting between grid 31.Described first lateral grid 31 is protruded from the side far from contact mechanism
First longitudinal direction grid 21 is equipped with bending part 6, the folding between the lateral grid 31 of first longitudinal direction grid 21 and first at integrally connected
Turn of bilge 6 includes straightway 61 and arc section 62, and one end of the straightway 61 is connect with one end of arc section 62, straightway 61
The other end is connect with first longitudinal direction grid 21 close to one end of the second grid group 3, the other end of the arc section 62 and the first horizontal stroke
It is connected to side of the grid 31 far from contact mechanism.The setting of integrally connected is manufactured uniformly, and arc blowout effect is more preferable.
As shown in Figure 3 or Figure 4, during the electric current disjunction of breaker, electric arc, under the magnetic fields of arc-chutes, a side are generated
Face, under the guiding function of run-on tab 4, electric arc passes through run-on tab 4 from moving contact 7, cuts the first grid group 2 piecewise；The opposing party
Face, electric arc jump to conductive plate 9 from static contact 8, the second grid group 3 are cut piecewise, so as to elongate electric arc.Due to electric arc point
It does not cut grid first grid piece group 2 transversely and cuts the second grid group 3 along longitudinal direction, in the first grid group 2 and the second grid group 3
Junction, pass through the first lateral grid 31 and the connection conducting structure of 21 intersection of first longitudinal direction grid, connect conducting structure
Refer to the bending part 6 in conduct piece 5 or Fig. 4 in Fig. 3, allow arc energy in the junction of the first grid group 2 and the second grid group 3
Reliable conducting forms Fig. 3 or shown in Fig. 4 electric arcs trend, makes electric arc that can be filled in the first grid group 2 and the second grid group 3
Cutting is cut, and so as to obtain higher arc voltage, forms preferable arc-rupturing capacity.
As shown in Figure 1, longitudinally A is closed the contact mechanism, it is arranged in parallel between the multiple longitudinal direction grid, and with
There is angle α, the angle α is acute angle so that the distance of the bottom end of grid to contact mechanism is small longitudinally in each between longitudinal axis A
Distance in its top to contact mechanism；It is arranged in parallel, and there is angle between transversal line B between the multiple transverse direction grid
β, the angle β are acute angle so that each side of the transverse direction grid far from contact mechanism is higher than it close to the another of contact mechanism
Side.The design of this structure had not only reduced the difficulty that electric arc enters grid group, but also elongating arc as possible, improved the blow-out energy of arc-chutes
Power.Preferably, 0 degree of 10 degree of ＜ angle αs ＜；0 degree of 10 degree of ＜ angle β ＜.In addition, the first grid group 2 and the second grid group 3
It separately sets, and the multiple longitudinal grid is equal with the distance that the first lateral grid 31 is spaced.
The structure of the mounting bracket of the present invention, the mounting bracket 1 is made of insulating materials, including parallel spaced-apart every setting
Two installation side plates, the first grid group 2 and the second grid group 3 are mounted between two installation side plates one on the other.Also, the
The both sides of grid longitudinally in each of one grid group 2 are equipped with the first installation convex block, be then equipped in the installation side plate of mounting bracket with it is described
First mounting hole of the first installation convex block cooperation, for the longitudinal grid of fixed and positioning；Each lateral grid of second grid group 3
Both sides are equipped with the second installation convex block, and the second peace with the described second installation convex block cooperation is then equipped in the installation side plate of mounting bracket
Hole is filled, for the lateral grid of fixed and positioning.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, several simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of arc-chutes of breaker, it is characterised in that：The arc-chutes are arranged on the side of the contact mechanism of breaker, packet
Include mounting bracket (1), the first grid group (2) and the second grid group (3), the first grid group (2) and second grid group (3) edge
The closing direction of contact mechanism is mounted in mounting bracket (1) one on the other, and the first grid group (2) is including separately setting
Multiple longitudinal grid, the second grid group (3) includes multiple lateral grid for separately setting；Also, the first grid
From the first grid group (2) in the first longitudinal direction grid (21) farthest from contact mechanism and the second grid group (3) in piece group (2)
Conducting is connected between the lateral grid (31) of nearest first.
2. the arc-chutes of breaker according to claim 1, it is characterised in that：The first longitudinal direction grid (21) and first
It is connected and is connected by conduct piece (5) between lateral grid (31), one end of the conduct piece (5) is connected to first longitudinal direction grid
(21) on one end of the second grid group (3), the other end of conduct piece (5) is connected to the first lateral grid (31) far from contact
On the side of mechanism.
3. the arc-chutes of breaker according to claim 1, it is characterised in that：The first longitudinal direction grid (21) and first
Integrally connected realizes connection conducting between lateral grid (31).
4. the arc-chutes of breaker according to claim 3, it is characterised in that：Described first lateral grid (31) is separate
The side of contact mechanism protrudes from first longitudinal direction grid (21), one between first longitudinal direction grid (21) and the first lateral grid (31)
Body junction is equipped with bending part (6), and the bending part (6) includes straightway (61) and arc section (62), the straightway (61)
One end connect with one end of arc section (62), the other end of straightway (61) is with first longitudinal direction grid (21) close to the second grid
One end connection of group (3), the other end of the arc section (62) and the first lateral side of the grid (31) far from contact mechanism connect
It connects.
5. the arc-chutes of breaker according to claim 1, it is characterised in that：Grid is close to the second grid longitudinally in each
One end of group (3) is equipped with the first notch, and grid is equipped with the second notch on the side close to contact mechanism longitudinally in each.
6. the arc-chutes of breaker according to claim 1, it is characterised in that：It further includes and is arranged on the first grid group (2)
Run-on tab (4) between contact mechanism, one end of the run-on tab (4) in connecting pin (41), with the first grid group (2) from
Nearest second longitudinal direction grid (22) connection of contact mechanism, the other end of run-on tab (4) is arc end (42), positioned at second longitudinal direction
Under grid (22) and opening state between the moving contact (7) of contact mechanism.
7. the arc-chutes of breaker according to claim 6, it is characterised in that：The arc end (42) of the run-on tab (4)
It is parallel and separately set with the side of moving contact (7) against the first grid group (2).
8. the arc-chutes of breaker according to claim 1, it is characterised in that：Longitudinally A is closed the contact mechanism,
It is arranged in parallel, and there is angle α between longitudinal axis A between the multiple longitudinal direction grid, the angle α is acute angle so that every
The distance of bottom end to the contact mechanism of a longitudinal direction grid is less than its top to the distance of contact mechanism；It is the multiple transverse direction grid it
Between be arranged in parallel, and it is acute angle to have angle β, the angle β between transversal line B so that each transverse direction grid is far from contact
The side of mechanism is higher than its opposite side close to contact mechanism.
9. the arc-chutes of the breaker according to claim 1 or 8, it is characterised in that：The first grid group (2) and second
Grid group (3) is separately set, and the multiple longitudinal grid is equal with the distance that the first lateral grid (31) is spaced.
10. the arc-chutes of breaker according to claim 8, it is characterised in that：0 degree of 10 degree of ＜ angle αs ＜；0 degree of ＜ folder
10 degree of angle beta ＜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000531.4A CN108269709B (en) | 2017-01-03 | 2017-01-03 | Arc extinguishing chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000531.4A CN108269709B (en) | 2017-01-03 | 2017-01-03 | Arc extinguishing chamber of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108269709A true CN108269709A (en) | 2018-07-10 |
| CN108269709B CN108269709B (en) | 2020-03-31 |
Family
ID=62771430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000531.4A Active CN108269709B (en) | 2017-01-03 | 2017-01-03 | Arc extinguishing chamber of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108269709B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
| CN113871272A (en) * | 2021-08-20 | 2021-12-31 | 德力西电气有限公司 | Grid arc extinguish chamber and circuit breaker |
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| CN206363922U (en) * | 2017-01-03 | 2017-07-28 | 浙江正泰电器股份有限公司 | The arc-chutes of breaker |
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| CN201478203U (en) * | 2009-07-02 | 2010-05-19 | 环宇集团有限公司 | Arc-extinguishing system of AC contactor |
| CN203192729U (en) * | 2013-04-22 | 2013-09-11 | 永上集团有限公司 | Miniature circuit breaker with dual arc extinguishing functions |
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| CN113871272A (en) * | 2021-08-20 | 2021-12-31 | 德力西电气有限公司 | Grid arc extinguish chamber and circuit breaker |
| CN113871272B (en) * | 2021-08-20 | 2023-12-26 | 德力西电气有限公司 | Grid arc extinguishing chamber and circuit breaker |
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108269709B (en) | 2020-03-31 |
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