CN204390940U - DC contactor arc-extinguisher - Google Patents
DC contactor arc-extinguisher Download PDFInfo
- Publication number
- CN204390940U CN204390940U CN201520102473.2U CN201520102473U CN204390940U CN 204390940 U CN204390940 U CN 204390940U CN 201520102473 U CN201520102473 U CN 201520102473U CN 204390940 U CN204390940 U CN 204390940U
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- arc
- permanent magnet
- striking component
- insulating sleeve
- arc striking
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Abstract
The utility model provides a kind of DC contactor arc-extinguisher, comprise connecting plate, the guard shield that goes out, springs, contact bridge, contact, permanent magnet, insulating sleeve, arc striking component, arc extinguishing grid pieces, contact.Permanent magnet, plastics insulating sleeve, arc striking component, arc extinguishing grid pieces are arranged on and go out in guard shield; Wherein permanent magnet is positioned in the middle of arc striking component, there is gap between permanent magnet and arc striking component, and arc striking component is that the soft magnetic material of easy magnetization is made; Mould shell insulating sleeve parcel permanent magnet, plastic partition thermal sleeve is connected with arc striking component; Described plastics insulating sleeve is that gas exhausted material is made.The beneficial effects of the utility model are: the defect solving the high temperature demagnetization that permanent magnet arc extinguishing exists, reasonable in design compared with similar product, novel, utilize magnetic quenching, extinguishing that grid arc extinguishing two kinds of modes finally realize electric arc.
Description
Technical field
The utility model relates to a kind of arc control device, particularly a kind of DC contactor arc-extinguisher.
Background technology
The utility model belongs to the arc extinguishing technology of heavy DC arc control device, and adopt insulated heat device permanent magnet and outside conducting-heat elements to be separated, it is applicable to the D.C. contactor of Direct Action Type bridge-type contact double-breakpoint structure.
D.C. contactor is a kind of electrical equipment being applicable to remote connection and disjunction direct current main circuit and Large Copacity control circuit continually.D.C. contactor is widely used in direct current system, as city rail, subway, charging pile, communications industry, and the various fields such as photovoltaic system.In order to rapid arc extinguishing, D.C. contactor generally adopts magnetic blow-out formula arc-control device, and also have the D.C. contactor of low capacity and adopt permanent magnet to produce magnetic blow-out power, the jumbo contactor of centering then conventional longitudinal joint arc extinguishing adds magnetic quenching method.What generally adopt now is permanent magnet arc extinguishing technology, but under the hot environment of electric arc generation, unshielded permanent magnet can demagnetize gradually along with the rising of temperature.
Utility model content
In order to improve the breaking capacity of miniature circuit breaker, a kind of DC contactor arc-extinguisher of the present utility model, substitutes original old-fashioned arc control device.Have that structure is simple, arc extinguishing efficiency high, circuit breaker breaking capacity can be heightened greatly, ensure electrical network reliably working.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of DC contactor arc-extinguisher, comprise connecting plate, the guard shield that goes out, springs, contact bridge, contact, permanent magnet, insulating sleeve, arc striking component, arc extinguishing grid pieces, contact.Permanent magnet, plastics insulating sleeve, arc striking component, arc extinguishing grid pieces are arranged on and go out in guard shield; Wherein permanent magnet is positioned in the middle of arc striking component, there is gap between permanent magnet and arc striking component; Mould shell insulating sleeve parcel permanent magnet, plastics insulating sleeve is connected with arc striking component; Described plastics insulating sleeve is that gas exhausted material is made.
The invention has the beneficial effects as follows: the defect solving the high temperature demagnetization that permanent magnet arc extinguishing exists, reasonable in design compared with similar product, novel, utilize magnetic quenching, extinguishing that grid arc extinguishing two kinds of modes finally realize electric arc.
Accompanying drawing explanation
According to embodiment and accompanying drawing, the utility model is described in further detail below.
Fig. 1 is that the utility model part cuts open inside and outside overall structure schematic diagram.
Fig. 2 is the front view of arc striking component
The front view that Fig. 3 is arc striking component, insulating sleeve, permanent magnet assembly parts
The vertical view that Fig. 4 is arc striking component, insulating sleeve, permanent magnet assembly parts
Fig. 5 is the cutaway view in direction shown in Fig. 4
Reference numeral:
1. connecting plate, 2. to go out guard shield, 3. springs, 4. contact bridge, 5. contact, 6. permanent magnet, 7. insulating sleeve, 8. arc striking component, 9. arc extinguishing grid pieces, 10. contact
Embodiment
Please refer to shown in Fig. 1-5: a kind of DC contactor arc-extinguisher described in the utility model, comprise connecting plate 1, the guard shield 2 that goes out, springs 3, contact bridge 4, contact 5, permanent magnet 6, insulating sleeve 7, arc striking component 8 arc extinguishing grid pieces 9, contact 10.Permanent magnet 6, plastics insulating sleeve 7, arc striking component 8, arc extinguishing grid pieces 9 are arranged on and go out in guard shield 2; Wherein permanent magnet 6 is positioned in the middle of arc striking component 8, and there is gap between permanent magnet 6 and arc striking component 8, arc extinction part is that the soft magnetic material of easy magnetization is made; Mould shell insulating sleeve 7 and wrap up permanent magnet 6, plastic partition hot jacket 7 is connected with arc striking component 8; Described plastics insulating sleeve 7 is made for gas exhausted material.
The course of work is as follows:
Be illustrated in figure 2 the front view of arc striking component 8, arc striking component 8 and permanent magnet 6 and insulating sleeve 7 are assembled, wherein insulating sleeve 7 plays fixed permanent magnet 6 and heat insulation object, the model assembled as shown in Figure 3, arc striking component 8 magnetizes by permanent magnet 6, closed magnetic field is formed in arc striking component 8 both sides, as shown in Figure 3, if the polarity of permanent magnet 6 is the right S of left N, the direction of arrow shown in Fig. 3 is magnetic direction, as shown in Figure 1, contact 10 is arranged on immediately below permanent magnet 6, during sound contact separation, the position that electric arc produces is in the region of magnetic field envelope, when electric arc produces, under the action of a magnetic force, electric arc enters rapidly arc extinguishing grid pieces 9, because the magnetic resistance of metal grid is much smaller than the magnetic resistance of air, therefore the magnetic flux on electric arc top easily forms closed magnetic circuit by metal grid, this is close under just causing and the magnetic field in electric arc surrounding air being dredged.This magnetic field produces active force upwards to electric arc, is moved to by electric arc in grid gap, the short electric arc that electric arc is divided into several to connect by grid.Each grid becomes the electrode of short electric arc, and total arc drop is divided into several sections, makes the arc voltage between each grid exceed supply power voltage, and the heat absorption of electric arc is distributed by grid simultaneously, electric arc is cooled rapidly, impels electric arc to extinguish as early as possible.
Embodiment recited above is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the utility model designs spiritual prerequisite; any amendment that the common engineers and technicians in this area make technical solutions of the utility model, equivalent replacement, improvement etc., all should fall in protection range that claims of the present utility model determine.
Claims (1)
1. a DC contactor arc-extinguisher, comprise connecting plate (1), the guard shield that goes out (2), springs (3), contact bridge (4), contact (5), permanent magnet (6), insulating sleeve (7), arc striking component (8) arc extinguishing grid pieces (9), contact (10), it is characterized in that: permanent magnet (6), plastics insulating sleeve (7), arc striking component (8), arc extinguishing grid pieces (9) are arranged on the guard shield that goes out (2); Wherein permanent magnet (6) is positioned in the middle of arc striking component (8), and there is gap between permanent magnet (6) and arc striking component (8), the soft magnetic material that arc striking component (8) is easy magnetization is made; Mould shell insulating sleeve (7) parcel permanent magnet (6), plastics insulating sleeve (7) is connected with arc striking component (8); Described plastics insulating sleeve (7) is made for gas exhausted material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102473.2U CN204390940U (en) | 2015-02-10 | 2015-02-10 | DC contactor arc-extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102473.2U CN204390940U (en) | 2015-02-10 | 2015-02-10 | DC contactor arc-extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204390940U true CN204390940U (en) | 2015-06-10 |
Family
ID=53363638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102473.2U Active CN204390940U (en) | 2015-02-10 | 2015-02-10 | DC contactor arc-extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204390940U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301737A (en) * | 2018-10-25 | 2019-02-01 | 彭力 | A kind of coal mine ventilation blower electric power box magnetization decompression cooling arc extinguishing moves back line apparatus |
| CN109767939A (en) * | 2019-03-12 | 2019-05-17 | 上海西埃新能源科技有限公司 | A kind of external magnetic circuit folder |
-
2015
- 2015-02-10 CN CN201520102473.2U patent/CN204390940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301737A (en) * | 2018-10-25 | 2019-02-01 | 彭力 | A kind of coal mine ventilation blower electric power box magnetization decompression cooling arc extinguishing moves back line apparatus |
| CN109767939A (en) * | 2019-03-12 | 2019-05-17 | 上海西埃新能源科技有限公司 | A kind of external magnetic circuit folder |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |