CN205303389U - Arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function - Google Patents
Arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function Download PDFInfo
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- CN205303389U CN205303389U CN201521109355.0U CN201521109355U CN205303389U CN 205303389 U CN205303389 U CN 205303389U CN 201521109355 U CN201521109355 U CN 201521109355U CN 205303389 U CN205303389 U CN 205303389U
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Abstract
The utility model provides an arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function. The arc extinction mechanism who mainly solves the circuit breaker has only the function of magnetic blow -out or only air -blowing, causes breaking capacity not good, problem that the arc extinguishing effect is not good. Its characterized in that: still include magnetic blow -out device (4) and produce gas board (5), magnetic blow -out device (4) and product gas board (5) correspond to be located static contact (22) and between explosion chamber (3) and be used for with the electric arc direction that produces when static contact (22) are scolded out in moving contact (21) explosion chamber (3). The utility model provides an arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function still is equipped with magnetic blow -out mechanism and product gas board, the electric arc that produces direction explosion chamber when scolding out the static contact with the moving contact between its static contact and the explosion chamber. The efficiency of the arc extinguishing is improved, breaking capacity is stronger.
Description
Technical field
This utility model relates to Low Voltage Electrical Apparatus, has the chopper relating to a kind of arc-extinguishing mechanism being provided with and possessing magnetic blow-out and air-blowing function.
Background technology
Along with the continuous growth of electricity needs, China is carrying out power infrastructures construction energetically, and wherein direct current power supply-distribution system is more and more tightr with the relation of people's daily life. Direct current power supply-distribution system has relative to exchange power supply-distribution system that circuit cost is low, capacity big, regulate the advantages such as rapid, reliable, have employed direct current power supply-distribution system in many important industries such as current China city trolley bus, railway, solar electrical energy generation, smelting, chemical industry, mine. Dc circuit breaker is the key equipment of straight-flow system safe operation, allow for reliably connecting, electric current under disjunction and carrying normal operation, and can connect in abnormal running (such as short circuit) situation of regulation, the electric current in carrying certain time and disjunction loop.
The top priority that direct current cut-offs is to extinguish electric arc. Owing to DC circuit does not have natural zero-crossing point, in mesolow straight-flow system, the methods adopting increase arc voltage extinguish electric arc more at present, and common scheme adopts metal grid arc cutting to realize extinguishing electric arc.
There is critical current in chopper drop-out current. When drop-out current is much smaller than critical current, arc energy is little, quickly self-extinguishment; When drop-out current is much larger than critical current, the electromagnetic force of electric arc self is sufficiently large, it is possible to makes electric arc quickly enter arc-chutes along striking road and is cut by metal grid, arc extinction; General chopper cut-off loop be near critical current time have any problem, the electromagnetic force that electric arc oneself produces is not enough so that electric arc moves, and ultimately results in arc reignition even failure of interruption. Electric arc stagnates the serious ablation that also can cause arc road in arc-chutes porch, reduces the life-span of chopper.
Occur in that some choppers possess the function of magnetic blow-out or gas blast arc-quenching currently on the market, (such as publication number is " CN103824736A ", Chinese patent or publication number that patent name is " a kind of dc circuit breaker with magnetic blowout arc-chute " are the Chinese patent of " direct-driven gas blow tripping device of breaker " for " 102299032A " patent name), breaking capacity is not good, and arc quenching effect is bad.
Utility model content
In order to overcome the deficiency of background technology, this utility model provides a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, the arc-extinguishing mechanism mainly solving chopper only has magnetic blow-out or the function of only air-blowing, causes breaking capacity not good, the problem that arc quenching effect is bad.
This utility model be the technical scheme is that
A kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, including housing, arc-extinguishing mechanism and operating mechanism it is provided with in described housing, described operating mechanism includes the moving contact and the static contact that are correspondingly provided with, described arc-extinguishing mechanism includes arc-chutes, described static contact is provided with stationary contact, described arc-chutes and described stationary contact are correspondingly arranged, also include magnetic blow-out device and aerogenesis plate, described magnetic blow-out device and aerogenesis plate and be correspondingly arranged between described static contact and described arc-chutes and the electric arc that produces during for described moving contact scolds out static contact leads described arc-chutes.
The magnetic conduction sheet that described magnetic blow-out device includes magnetic conductive board and magnetic conduction sheet two ends are provided with, described magnetic conductive board and described magnetic conduction sheet are crowded around and are internally formed a striking passage towards described arc-chutes and described stationary contact is correspondingly arranged in described striking passage.
Described striking passage is U-shaped structure.
It is provided with for the buckling groove with described magnetic conduction sheet snap-fit engagement bottom described aerogenesis plate.
Described magnetic conduction sheet is fabricated from iron.
Described static contact leading portion is provided with the bending part of U-shaped, and described bending part inwall forms the U-type groove of magnetic conductive board described in clamping.
Described arc-chutes include the arc extinguishing grid pieces group formed uniformly at intervals by some arc extinguishing grid pieces, are provided with the escape groove for hold described magnetic conduction sheet corresponding with described magnetic conduction sheet bottom described arc extinguishing grid pieces group.
Described arc extinguishing grid pieces is uniform staggered with between two.
Some described arc extinguishing grid pieces axial directions are arcuately distributed.
Described magnetic conductive board is provided with four and passes through closing-up together.
The beneficial effects of the utility model are: this utility model provides a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, it is additionally provided with magnetic blow-out mechanism and aerogenesis plate between its static contact and arc-chutes, moving contact is scolded out the electric arc guiding arc-chutes produced during static contact. Improve arc extinguishing efficiency, breaking capacity is higher.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of one embodiment of this utility model.
Fig. 2 is the cross-sectional schematic of the arc-chutes of one embodiment of this utility model.
Fig. 3 is the schematic perspective view of the arc-chutes of one embodiment of this utility model.
Fig. 4 is the schematic perspective view of the arc-chutes of one embodiment of this utility model.
Fig. 5 is the schematic perspective view of the arc-chutes of one embodiment of this utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail: as shown in the figure, a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, including housing 1, it is provided with arc-extinguishing mechanism and operating mechanism in described housing 1, described operating mechanism includes the moving contact 21 and the static contact 22 that are correspondingly provided with, described arc-extinguishing mechanism includes arc-chutes 3, described static contact 22 is provided with stationary contact 221, described arc-chutes 3 are correspondingly arranged with described stationary contact 221, also include magnetic blow-out device 4 and aerogenesis plate 5, described magnetic blow-out device 4 and aerogenesis plate 5 are correspondingly arranged between described static contact 22 and described arc-chutes 3 and the electric arc that produces during for described moving contact 21 scolds out static contact 22 leads described arc-chutes 3. when big electric current passes through, can be scolded due to electrodynamic repulsion force moving contact and be held, electric arc can be produced in scolding the process held, in the opening procedure of moving contact, produce electric arc, arc burning aerogenesis cover gas wall, the anxious poly-rising of gas wall internal gas pressure, the air pressure of aerogenesis cover rear end can more than front end air pressure, and the gas that contact produces in disconnection process sprays toward arc-chutes direction under the effect of draught head, grid in arc-chutes cuts off electric arc, makes electric arc quickly extinguish.Electric arc is blown by magnetic blow-out device toward arc-chutes direction, further speed up arc extinction efficiency, this utility model provides a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, it is additionally provided with magnetic blow-out mechanism and aerogenesis plate between its static contact and arc-chutes, moving contact is scolded out the electric arc guiding arc-chutes produced during static contact. Improve arc extinguishing efficiency, breaking capacity is higher.
In this utility model, as shown in the figure, the magnetic conduction sheet 42 that described magnetic blow-out device 4 includes magnetic conductive board 41 and magnetic conduction sheet 41 two ends are provided with, described magnetic conductive board 41 and described magnetic conduction sheet 42 are crowded around and are internally formed a striking passage 43 towards described arc-chutes 3 and described stationary contact 221 is correspondingly arranged in described striking passage 43. Here magnetic conductive board is that magnetic material is made, further can adopt Magnet, it is easy to obtain, magnetic conduction sheet is that conductor is made, further can adopt iron plate, magnetic conductive board and magnetic conduction sheet form the magnetic field for electric arc is pushed to arc-chutes, and electric arc produces, between the stationary contact of moving contact, to be blown into arc extinguishing in arc-chutes by magnetic field.
In this utility model, as it can be seen, described striking passage 43 is U-shaped structure. Magnetic field is stable with family, may be otherwise as trapezium structure etc.
In this utility model, as it can be seen, be provided with bottom described aerogenesis plate 5 for the buckling groove with described magnetic conduction sheet 42 snap-fit engagement. Aerogenesis board is connected on magnetic conduction sheet, difficult drop-off, compact conformation, and result of use is good.
In this utility model, as it can be seen, described magnetic conduction sheet 42 is fabricated from iron. May be otherwise employing other conductor, such as copper, silver etc., ferrum is less costly.
In this utility model, as it can be seen, described static contact 22 leading portion is provided with the bending part 222 of U-shaped, described bending part 222 inwall forms the U-type groove 223 of magnetic conductive board 41 described in clamping. Magnetic conductive board easier for installation, result of use is better.
In this utility model, as shown in the figure, described arc-chutes 3 include the arc extinguishing grid pieces group 31 formed uniformly at intervals by some arc extinguishing grid pieces 311, are provided with the escape groove 312 for hold described magnetic conduction sheet 42 corresponding with described magnetic conduction sheet 42 bottom described arc extinguishing grid pieces group 31. The magnetic conduction sheet made is possible to prevent in arc-chutes, decreases the distance of arc extinguishing passage, and structure is compacter, and result of use is better.
In this utility model, as it can be seen, described arc extinguishing grid pieces 311 is uniform staggered with between two. The one side that arc extinguishing grid pieces interlocks, towards striking passage, strengthens striking ability, increases arc quenching effect.
In this utility model, as it can be seen, some described arc extinguishing grid pieces 311 axial directions are arcuately distributed. Owing to the running orbit of moving contact is arc, the distribution of arc extinguishing grid pieces is also correspondingly arranged as arc, it is simple to arc extinguishing, result of use is better.
In this utility model, as it can be seen, described magnetic conductive board 41 is provided with four and passes through closing-up together. Magnetic conduction better effects if, is installed together easier for installation by rivet assembling by magnetic conductive board.
Embodiment is not construed as restriction of the present utility model, but any based on spirit improvements introduced of the present utility model, all should within protection domain of the present utility model.
Claims (10)
1. the chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function, including housing (1), described housing is provided with arc-extinguishing mechanism and operating mechanism in (1), described operating mechanism includes the moving contact (21) and the static contact (22) that are correspondingly provided with, described arc-extinguishing mechanism includes arc-chutes (3), described static contact (22) is provided with stationary contact (221), described arc-chutes (3) and described stationary contact (221) are correspondingly arranged, it is characterized in that: also include magnetic blow-out device (4) and aerogenesis plate (5), described magnetic blow-out device (4) and aerogenesis plate (5) are correspondingly arranged between described static contact (22) and described arc-chutes (3) and are used for described moving contact (21) is scolded out the electric arc described arc-chutes of guiding (3) produced during static contact (22).
2. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 1, it is characterized in that: the magnetic conduction sheet (42) that described magnetic blow-out device (4) includes magnetic conductive board (41) and magnetic conduction sheet (41) two ends are provided with, described magnetic conductive board (41) and described magnetic conduction sheet (42) are crowded around and are internally formed a striking passage (43) towards described arc-chutes (3) and described stationary contact (221) is correspondingly arranged in described striking passage (43).
3. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterised in that: described striking passage (43) is U-shaped structure.
4. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterised in that: described aerogenesis plate (5) bottom is provided with for the buckling groove with described magnetic conduction sheet (42) snap-fit engagement.
5. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterised in that: described magnetic conduction sheet (42) is fabricated from iron.
6. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterized in that: described static contact (22) leading portion is provided with the bending part (222) of U-shaped, described bending part (222) inwall forms the U-type groove (223) of magnetic conductive board (41) described in clamping.
7. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterized in that: described arc-chutes (3) include the arc extinguishing grid pieces group (31) formed uniformly at intervals by some arc extinguishing grid pieces (311), described arc extinguishing grid pieces group (31) bottom is provided with the escape groove (312) that be used for hold described magnetic conduction sheet (42) corresponding with described magnetic conduction sheet (42).
8. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 7, it is characterised in that: described arc extinguishing grid pieces (311) is uniform staggered with between two.
9. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 7, it is characterised in that: some described arc extinguishing grid pieces (311) axial directions are arcuately distributed.
10. a kind of chopper being provided with the arc-extinguishing mechanism possessing magnetic blow-out and air-blowing function according to claim 2, it is characterised in that: described magnetic conductive board (41) is provided with four and passes through closing-up together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109355.0U CN205303389U (en) | 2015-12-29 | 2015-12-29 | Arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109355.0U CN205303389U (en) | 2015-12-29 | 2015-12-29 | Arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function |
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| Publication Number | Publication Date |
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| CN205303389U true CN205303389U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201521109355.0U Active CN205303389U (en) | 2015-12-29 | 2015-12-29 | Arc extinction mechanism's circuit breaker with possess magnetic blow -out and air -blowing function |
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| CN (1) | CN205303389U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470067A (en) * | 2015-12-29 | 2016-04-06 | 浙江天正电气股份有限公司 | Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions |
| CN107134393A (en) * | 2017-05-27 | 2017-09-05 | 上海良信电器股份有限公司 | A kind of circuit breaker static contact mounting means structure-improved |
| CN107170652A (en) * | 2017-05-27 | 2017-09-15 | 上海良信电器股份有限公司 | A kind of circuit breaker static contact mounting structure |
| CN109461615A (en) * | 2018-12-29 | 2019-03-12 | 常熟开关制造有限公司(原常熟开关厂） | A kind of arc-chutes of breaker |
| CN114360966A (en) * | 2022-01-07 | 2022-04-15 | 郑爱弟 | Contactor with enhanced magnetic field guiding arc extinguishing chamber |
-
2015
- 2015-12-29 CN CN201521109355.0U patent/CN205303389U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470067A (en) * | 2015-12-29 | 2016-04-06 | 浙江天正电气股份有限公司 | Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions |
| CN107134393A (en) * | 2017-05-27 | 2017-09-05 | 上海良信电器股份有限公司 | A kind of circuit breaker static contact mounting means structure-improved |
| CN107170652A (en) * | 2017-05-27 | 2017-09-15 | 上海良信电器股份有限公司 | A kind of circuit breaker static contact mounting structure |
| CN109461615A (en) * | 2018-12-29 | 2019-03-12 | 常熟开关制造有限公司(原常熟开关厂） | A kind of arc-chutes of breaker |
| CN114360966A (en) * | 2022-01-07 | 2022-04-15 | 郑爱弟 | Contactor with enhanced magnetic field guiding arc extinguishing chamber |
| CN114360966B (en) * | 2022-01-07 | 2023-10-13 | 杭州玛实迪电器科技有限公司 | Contactor with enhanced magnetic field guiding arc extinguishing chamber |
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| GR01 | Patent grant |