CN208889593U - A kind of small-sized DC breaker arc extinguishing structure - Google Patents
A kind of small-sized DC breaker arc extinguishing structure Download PDFInfo
- Publication number
- CN208889593U CN208889593U CN201821823331.5U CN201821823331U CN208889593U CN 208889593 U CN208889593 U CN 208889593U CN 201821823331 U CN201821823331 U CN 201821823331U CN 208889593 U CN208889593 U CN 208889593U
- Authority
- CN
- China
- Prior art keywords
- arc extinguishing
- permanent
- pedestal
- breaker
- contact
- 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.)
- Active
Links
Abstract
The utility model relates to a kind of small-sized DC breaker arc extinguishing structure, breaker includes pedestal and base seat lid；Static contact and moving contact are installed in the pedestal；It further include two permanent-magnet arc extinguishing devices；Two permanent-magnet arc extinguishing devices are respectively arranged on the pedestal and the base seat lid；The permanent-magnet arc extinguishing device includes flash barrier, magnetic conductive board and permanent magnetism；Permanent magnetism is fixed in the hole on magnetic conductive board；Flash barrier is fixed on permanent magnetism side；Run-on tab is also equipped in the pedestal；One end of the run-on tab is located at the contact side of the static contact；When the base seat lid is covered on the pedestal, two permanent-magnet arc extinguishing device positions are opposite, and the moving contact, the static contact and the run-on tab are respectively positioned between two permanent-magnet arc extinguishing devices.The utility model efficiently solves the problems, such as that the dc circuit breaker arcing time long, shortens the turn-off time of breaker, is conducive to improve circuit breaker short circuit breaking capacity.
Description
Technical field
The utility model relates to breakers, and in particular to a kind of small-sized DC breaker arc extinguishing structure.
Background technique
In breaker open operation, when moving contact and static contact are just initially separated, gap very little, electric field strength is very big, easily
High fever and high field are generated, the free electron of metal inside is escaped from cathode surface, marches on towards anode.This free electron is in electric field simultaneously
Middle shock neutral gas molecule is allowed to motivate and dissociate, and generates cation and electronics, electronics continue to face south under forceful electric power field action
When Ghandler motion moves, other neutral molecules are also hit, therefore, just generate a large amount of cation in the gap of moving contact and static contact
With the charged particle of electronics, gaseous conduction is made to form red-hot electron stream, i.e. electric arc.
The arcing and blow-out process of dc circuit breaker are different with AC circuit breaker.It is generated when AC circuit breaker disjunction
Alternating current arc has 2f (f is mains frequency) secondary through zero crossing each second.By proximal pole effect, make arc extinction.AC circuit breaker
As long as solving the problems, such as arc reignition, that is, solve the dielectric strength recovery process that dielectric insulation state is restored to by conduction state.Directly
The direct-current arc generated when flowing the contact of breaker is invariable, and electric current is bigger, and time constant is bigger, and electric arc is just more difficult to be extinguished.
Now common arc quenching method is that the electric arc that will generate introduces arc-chutes by arc striking piece and carries out arc extinguishing, but there are electric arc guiding performances not
By force, the defects of quenching time is long, arc quenching effect is poor, causes the breaking capacity of breaker not high.
Utility model content
In view of the deficiencies of the prior art, the utility model discloses a kind of small-sized DC breaker arc extinguishing structures.
Technical solution used by the utility model is as follows:
A kind of small-sized DC breaker arc extinguishing structure, breaker include pedestal and base seat lid；It is equipped in the pedestal quiet
Contact and moving contact；It further include two permanent-magnet arc extinguishing devices；Two permanent-magnet arc extinguishing devices are respectively arranged in the pedestal and described
In base seat lid；The permanent-magnet arc extinguishing device includes flash barrier, magnetic conductive board and permanent magnetism；Permanent magnetism is fixed in the hole on magnetic conductive board；
Flash barrier is fixed on permanent magnetism side；Run-on tab is also equipped in the pedestal；One end of the run-on tab is located at the stationary contact
The contact side of head；When the base seat lid is covered on the pedestal, two permanent-magnet arc extinguishing device positions are opposite, and described dynamic
Contact, the static contact and the run-on tab are respectively positioned between two permanent-magnet arc extinguishing devices.
Its further technical solution is to be provided with fixing axle in the pedestal and base seat lid；It is arranged in the permanent magnetism
There is fixation hole；The fixation hole passes through the fixing axle and is fixed on the fixing axle；The flash barrier is fixed on permanent magnetism
Outside；The moving contact, the static contact and the run-on tab are respectively positioned between two flash barriers.
Its further technical solution is that the permanent magnetism in two permanent-magnet arc extinguishing devices is magnetic opposite.
Its further technical solution is to be equipped with arc-chutes in the pedestal；The other end of the run-on tab is located at institute
State the arc extinguishing feeder connection side of arc-chutes.
Its further technical solution is that the flash barrier covers the contact point of the moving contact and the static contact, institute
State the arc extinguishing feeder connection of run-on tab and the arc-chutes.
The beneficial effects of the utility model are as follows:
In the present invention, the magnetic magnetic field mutually torn open is generated between two permanent-magnet arc extinguishing devices, when moving contact and stationary contact
When having electric arc generation between head, the electronics that electric arc generates can generate magnetic blow-out, be led to electric arc quickly quickly by magnetic field suction
The arc extinguishing feeder connection of arc-chutes, so that fast arc extinction, efficiently solves the problems, such as that the dc circuit breaker arcing time long, shorten
The turn-off time of breaker is conducive to improve circuit breaker short circuit breaking capacity.
Two permanent-magnet arc extinguishing devices of the utility model are respectively arranged on pedestal and base seat lid, and permanent-magnet arc extinguishing device
Open circuit will not additionally be increased so two permanent-magnet arc extinguishing devices are tightly attached to the inner wall installation of pedestal and base seat lid for flat structure
The volume of device will not influence the component in existing breaker, maintain the cramped construction of miniature circuit breaker.
The utility model also adds flash barrier, and two flash barriers entirely cover the contact of moving contact and static contact, draw
The arc extinguishing feeder connection namely flash barrier of arc plate and arc-chutes cover electric arc from generation to all paths of elimination, prevent
Electric arc leakage is stopped, it is ensured that the safe operation of breaker.
Detailed description of the invention
Fig. 1 is the schematic diagram of pedestal in the utility model.
Fig. 2 removes the enlarged drawing of flash barrier and run-on tab for the part I in Fig. 1.
Fig. 3 is the operation principle schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
Small-sized DC breaker includes pedestal and base seat lid.It further include two permanent-magnet arc extinguishing devices.Two permanent magnetism interrupter cartridges
It sets and is respectively arranged on pedestal and base seat lid.Fig. 1 is the schematic diagram of pedestal in the utility model.As shown in Figure 1, in pedestal also
Static contact 2 is installed and can be with the contact closure of static contact 2 or the moving contact 3 separated.When base seat lid be covered on pedestal it
When upper, the contact point of moving contact 3 and static contact 2 is located between two permanent-magnet arc extinguishing devices.
Fig. 2 removes the enlarged drawing of flash barrier and run-on tab for the part I in Fig. 1.Fig. 3 is the working principle of the utility model
Schematic diagram.In conjunction with Fig. 2 and Fig. 3, permanent-magnet arc extinguishing device includes flash barrier 4, magnetic conductive board 6 and permanent magnetism 7.Permanent magnetism 7 is fixed on magnetic conductive board 6
On hole in.Flash barrier 4 is fixed on the side of permanent magnetism 7.
Specifically, being provided with fixing axle on pedestal and base seat lid.Permanent magnetism 7 be it is cylindric, permanent magnetism 7 is provided centrally with
Fixation hole.The fixation hole of permanent magnetism 7 passes through fixing axle and is fixed on fixing axle, while flash barrier 4 is fixed on fixing axle top.
Flash barrier 4 is fixed on the outside of permanent magnetism 7.Then when base seat lid is covered on pedestal, two flash barriers 4 are directly opposite,
The contact point of moving contact 3 and static contact 2 is located between two flash barriers 4.And the opposite permanent magnetism in two positions 7 is magnetic opposite.
Run-on tab 5 is also equipped between two permanent-magnet arc extinguishing devices.Arc-chutes 1 are also equipped in pedestal.Specifically, drawing
One end of arc plate 5 the contact point side namely static contact 2 of static contact 2 and moving contact 3 contact side, run-on tab 5 it is another
Hold the arc extinguishing feeder connection side in arc-chutes 1.
Further, flash barrier 4 covers the channel of the contact point of moving contact 3 and static contact 2, run-on tab 5 and arc-chutes 1
Entrance.I.e. flash barrier 4 covers the generation point of electric arc and electric arc eliminates the channel passed through before, prevents electric arc from revealing.
Through the production principle of electric arc in background technique it is found that in breaker, to extinguish electric arc it is necessary to inhibit it is free because
Free factor is gone in element and reinforcement, and electric arc is such as pulled in narrow slit, increases the distance between moving contact and arc-chutes grid etc., to reduce
Arc diameter, the ion concentration for keeping it internal increase, so that it may reinforce diffusion and cooling effect, electric arc be elongated, or in electric arc
Inside is placed obstacles, and is that local ion and electronics are compound, and liberation is made to be greater than liberation, can be by arc extinction.
This patent generates strength magnetic blow-out using permanent magnetism 7 and magnetic conductive board 6, the electric arc for generating moving contact 3 and 2 separating brake of static contact
Arc-chutes quickly are blowed to, to achieve the effect that fast arc extinction.
As shown in figure 3, be assembled with permanent-magnet arc extinguishing device on pedestal and base seat lid, and when base seat lid be covered in pedestal it
When upper, the position of two permanent magnetism 7 is corresponding, magnetic on the contrary, then generating the magnetic magnetic field mutually torn open between two permanent-magnet arc extinguishing devices.
When there is the contact separating brake of moving contact 3 and static contact 2, when having electric arc generation between moving contact 3 and stationary contact 2, what electric arc generated
Electronics can be quickly by magnetic field suction, and generate magnetic blow-out makes electric arc quickly be led to going out for arc-chutes 1 by the guidance of run-on tab 5
Arc feeder connection, so that fast arc extinction, efficiently solves the problems, such as that the dc circuit breaker arcing time long, shortens breaker
Turn-off time is conducive to improve circuit breaker short circuit breaking capacity.
Above description is the explanation to the utility model, is not the restriction to utility model, defined by the utility model
Range is referring to claim, and without prejudice to the basic structure of the utility model, the utility model can make any shape
The modification of formula.
Claims (5)
1. a kind of small-sized DC breaker arc extinguishing structure, breaker include pedestal and base seat lid；Stationary contact is installed in the pedestal
Head (2) and moving contact (3)；It is characterized by also including two permanent-magnet arc extinguishing devices；Two permanent-magnet arc extinguishing devices are respectively arranged in
On the pedestal and the base seat lid；The permanent-magnet arc extinguishing device includes flash barrier (4), magnetic conductive board (6) and permanent magnetism (7)；Permanent magnetism
(7) it is fixed in the hole on magnetic conductive board (6)；Flash barrier (4) is fixed on permanent magnetism (7) side；It is also equipped in the pedestal
Run-on tab (5)；One end of the run-on tab (5) is located at the contact side of the static contact (2)；When the base seat lid is covered in institute
When stating on pedestal, two permanent-magnet arc extinguishing device positions are opposite, and the moving contact (3), the static contact (2) and the run-on tab
(5) it is respectively positioned between two permanent-magnet arc extinguishing devices.
2. small-sized DC breaker arc extinguishing structure as described in claim 1, which is characterized in that on the pedestal and base seat lid
It is provided with fixing axle；Fixation hole is provided in the permanent magnetism (7)；The fixation hole passes through the fixing axle and is fixed on described solid
On dead axle；The flash barrier (4) is fixed on the outside of permanent magnetism (7)；The moving contact (3), the static contact (2) and described draw
Arc plate (5) is respectively positioned between two flash barriers (4).
3. small-sized DC breaker arc extinguishing structure as described in claim 1, which is characterized in that in two permanent-magnet arc extinguishing devices
Permanent magnetism (7) is magnetic opposite.
4. small-sized DC breaker arc extinguishing structure as described in claim 1, which is characterized in that be equipped with arc extinguishing in the pedestal
Room (1)；The other end of the run-on tab (5) is located at the arc extinguishing feeder connection side of the arc-chutes (1).
5. small-sized DC breaker arc extinguishing structure as described in claim 1, which is characterized in that be equipped with arc extinguishing in the pedestal
Room (1)；The flash barrier (4) cover the contact point of the moving contact (3) and the static contact (2), the run-on tab (5) and
The arc extinguishing feeder connection of the arc-chutes (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821823331.5U CN208889593U (en) | 2018-11-06 | 2018-11-06 | A kind of small-sized DC breaker arc extinguishing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821823331.5U CN208889593U (en) | 2018-11-06 | 2018-11-06 | A kind of small-sized DC breaker arc extinguishing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208889593U true CN208889593U (en) | 2019-05-21 |
Family
ID=66517951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821823331.5U Active CN208889593U (en) | 2018-11-06 | 2018-11-06 | A kind of small-sized DC breaker arc extinguishing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208889593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
-
2018
- 2018-11-06 CN CN201821823331.5U patent/CN208889593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8847096B2 (en) | Single direct current arc chute, and bi-directional direct current electrical switching apparatus employing the same | |
| WO2015172605A1 (en) | Breaker facilitating rapid movement and elongation of arc | |
| CN107359067B (en) | Miniature circuit breaker with stronger arc extinguishing ability | |
| CN206401213U (en) | Contact of breaker arc initiation device | |
| CN204558301U (en) | A kind of arc quenching system with magnetic blow-out formula and air-sweeping type arc extinguishing structure | |
| WO2021249056A1 (en) | Relay | |
| CN105513884A (en) | Manufacturing method of vacuum arc extinguishing chamber especially for direct-current switch electric appliance | |
| CN208889593U (en) | A kind of small-sized DC breaker arc extinguishing structure | |
| CN109300742A (en) | A kind of arc quenching system of D.C. contactor | |
| CN109192632A (en) | A kind of small-sized DC breaker arc extinguishing structure | |
| US9502195B2 (en) | Switching device | |
| CN107578938B (en) | Low-voltage circuit breaker | |
| CN212570833U (en) | Vacuum circuit breaker of solid-sealed polar pole | |
| CN208889526U (en) | A kind of direct current PC grades of twin-power switch arc extinguishing structures | |
| CN206672869U (en) | Open type high-voltage DC relay | |
| RU162074U1 (en) | ELECTROMAGNETIC HIGH VOLTAGE CONTACTOR | |
| WO2023036062A1 (en) | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability | |
| CN207690742U (en) | A kind of arc-chutes of breaker of plastic casing | |
| CN206312854U (en) | The contact apparatus of breaker | |
| CN207993777U (en) | D.C. contactor polarized combined type arc-control device | |
| CN102915894B (en) | Arc-blowing device of direct-current circuit breaker | |
| CN203707012U (en) | Arc extinguish chamber of vacuum circuit breaker | |
| CN218299704U (en) | High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker | |
| CN217485325U (en) | Grid arc extinguish chamber | |
| CN203503513U (en) | Magnetic concentrating blocks of DC breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |