CN203950766U - A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function - Google Patents
A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function Download PDFInfo
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- CN203950766U CN203950766U CN201420394490.3U CN201420394490U CN203950766U CN 203950766 U CN203950766 U CN 203950766U CN 201420394490 U CN201420394490 U CN 201420394490U CN 203950766 U CN203950766 U CN 203950766U
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- arc
- control device
- circuit breaker
- hole
- permanent magnetism
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Abstract
A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function.Solved the poor problem of existing DC circuit breaker arc quenching effect.It comprises housing, in described housing, be provided with contact system and arc quenching system, described arc quenching system comprises arc control device and is located at the multi-disc arc extinguishing grid pieces in arc control device, described contact system comprises fixed contact and moving contact, on described fixed contact, be connected with arc striking piece, described arc striking piece is located at the upper end of arc control device, described housing is provided with through hole, between described through hole and arc control device, be provided with communicating passage, between described through hole and arc control device, be provided with flash barrier, described flash barrier is provided with through hole.The utility model has been set up through hole on housing, through hole is connected with arc control device, the heat that arc control device produce when arc extinguishing can be discharged outside housing fast, guarantee the arc extinction performance of product, set up flash barrier simultaneously, make a small amount of electric arc of discharging with heat, after flash barrier, play the effect of blow-out.
Description
Technical field
The utility model relates to a kind of circuit breaker, is specifically related to a kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function.
Background technology
In the electric power system large at capacity such as power plant, transformer stations, voltage is high; direct current system for relay electric protection, operation are controlled, the equipment such as signal sound equipment and emergency lighting provides reliable power supply, small-sized DC circuit breaker as one of most important components and parts in direct current system, its reliable and stable operation will directly guarantee the safety of whole electric power system.Thereby existing DC circuit breaker is owing to existing voltage to form electric arc between dynamic and static contact in separation process, electric arc enters the arc control device of arc quenching system under the effects such as magnetic blow-out effect and aerodynamic force, the electric arc that enters arc control device is also claimed metal gate sheet to be divided into the short arc of some series connection by the arc extinguishing grid pieces being equidistantly spaced along electric arc direction in arc control device, thereby make electric arc fast cooling and improve rapidly arc drop, reach the object of blow-out.Electric arc when being extinguished, can produce heat in arc control device, and if these heats can not leave in time, can affect follow-up arc extinguishing.
Summary of the invention
For solving the poor problem of existing DC circuit breaker arc quenching effect in background technology, the utility model provides a kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function.
The technical solution of the utility model is: a kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function, comprise housing, in described housing, be provided with operating system, tripping system, contact system and arc quenching system, described arc quenching system comprises arc control device and is located at the multi-disc arc extinguishing grid pieces in arc control device, described contact system comprises fixed contact and moving contact, on described fixed contact, be connected with arc striking piece, described arc striking piece is located at the upper end of arc control device, described housing is provided with through hole, between described through hole and arc control device, be provided with communicating passage, between described through hole and arc control device, be provided with flash barrier, described flash barrier is provided with through hole.
As a kind of improvement of the present utility model, in described housing, be provided with dividing plate, described dividing plate is along communicating passage setting and communicating passage is divided into multiple tracks.
As further improvement of the utility model, described flash barrier is S-shaped and be integral type structure.
As further improvement of the utility model, described flash barrier has between polylith and adjacent flash barrier and is provided with gap.
As further improvement of the utility model, in described housing, be provided with magnetic patch, described magnetic patch is located on arc striking piece and is corresponding with moving contact.
As further improvement of the utility model, described fixed contact is provided with clamping part, and described magnetic patch is located in clamping part.
As further improvement of the utility model, described magnetic patch adopts ndfeb magnet.
As further improvement of the utility model, the V shaped hole that described arc extinguishing grid pieces is provided with on V shaped hole and adjacent arc extinguishing grid pieces shifts to install.
As further improvement of the utility model, the angle that the fixed contact of described fixed contact and moving contact side form is 165 ° to 195 °.
As further improvement of the utility model, the fixed contact of described fixed contact parallels with moving contact side.
The beneficial effects of the utility model are, on housing, set up through hole, through hole is connected with arc control device, the heat that arc control device produce when arc extinguishing can be discharged outside housing fast, guarantee the arc extinction performance of product, set up flash barrier simultaneously, make a small amount of electric arc of discharging with heat, play the effect of blow-out after flash barrier, air vent hole has guaranteed, housing through-hole is communicated with arc control device, is convenient to the effect of the discharge of heat and the arc extinguishing that can get up.The utility model also has simple in structure, produces, easy to assembly dependable performance, the advantage such as arc quenching effect is good.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Accompanying drawing 2 is the structural representation in the utility model embodiment housing 1.
Accompanying drawing 3 is the structural representation of accompanying drawing 2 other directions.
Accompanying drawing 4 is the front view of accompanying drawing 2.
Structural representation when accompanying drawing 5 separates for dynamic and static contact in accompanying drawing 2.
Accompanying drawing 6 is the structural representation of arc extinguishing grid pieces 52 in accompanying drawing 3.
In figure, 1, housing; 11, through hole; 12, communicating passage; 13, dividing plate; 2, operating system; 3, tripping system; 4, contact system; 41, fixed contact; 411, arc striking piece; 412, clamping part; 413, fixed contact; 42, moving contact; 421, moving contact side; 5, arc quenching system; 51, arc control device; 52, arc extinguishing grid pieces; 521, V shaped hole; 6, flash barrier; 61, air vent hole; 7, magnetic patch.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
By Fig. 1 in conjunction with Fig. 2, 3, 4, 5, shown in 6, a kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function, comprise housing 1, in described housing 1, be provided with operating system 2, tripping system 3, contact system 4 and arc quenching system 5, described arc quenching system 5 comprises arc control device 51 and is located at the multi-disc arc extinguishing grid pieces 52 in arc control device 51, described contact system 4 comprises fixed contact 41 and moving contact 42, on described fixed contact 41, be connected with arc striking piece 411, described arc striking piece 411 is located at the upper end of arc control device 51, described housing 1 is provided with through hole 11, between described through hole 11 and arc control device 51, be provided with communicating passage 12, between described through hole 11 and arc control device 51, be provided with flash barrier 6, described flash barrier 6 is provided with air vent hole 61.The beneficial effects of the utility model are, on housing, set up through hole, through hole is connected with arc control device, the heat that arc control device produce when arc extinguishing can be discharged outside housing fast, guarantee the arc extinction performance of product, set up flash barrier simultaneously, make a small amount of electric arc of discharging with heat, play the effect of blow-out after flash barrier, air vent hole has guaranteed, housing through-hole is communicated with arc control device, is convenient to the effect of the discharge of heat and the arc extinguishing that can get up.The utility model also has simple in structure, produces, easy to assembly dependable performance, the advantage such as arc quenching effect is good.
In described housing 1, be provided with dividing plate 13, described dividing plate 13 arranges and communicating passage 12 is divided into multiple tracks along communicating passage 12.Specifically, many dividing plates or one dividing plate can be set according to actual needs, heat in arc control device is introduced in passage from arc control device, thereby avoid the impact on miscellaneous part in housing, dividing plate be arranged so that heat and electric arc in product channels can be too unconcentrated, and be beneficial to the circulation heat radiation of heat.
Described flash barrier 6 is S-shaped and be integral type structure.Such structure is easy for installation, be reliably optimal way of the present utility model.Specifically, certainly, described flash barrier 6 has between polylith and adjacent flash barrier 6 and is provided with gap (not providing this structure in drawing), so also can play good heat radiation and arc effect, and trouble is just installed.
In described housing 1, be provided with magnetic patch 7, described magnetic patch 7 is located on arc striking piece 411 and is corresponding with moving contact 42.Specifically, described fixed contact 41 is provided with clamping part 412, and described magnetic patch 7 is located in clamping part 412.In particular, described magnetic patch 7 adopts ndfeb magnet.The utility model is provided with magnetic patch, makes product when the dynamic and static contact of disjunction produces electric arc, and magnetic patch can produce magnetic force and make arc energy enter sooner, more reliably arc control device, increases the striking effect of product.In particular, the V shaped hole 521 that described arc extinguishing grid pieces 52 is provided with on V shaped hole 521 and adjacent arc extinguishing grid pieces 52 shifts to install.It is large that such structure can avoid regular notch arrangement to make electric arc enter grid sheet resistance, in breaking current, the electric arc of high heat can not enter arc extinguishing grid pieces fast, arc voltage rises slowly, the shortcoming of blow-out time lag, such structure arc current produces magnetic flux around at arc extinguishing grid pieces, grid sheet is magnetized, grid sheet produces a kind of suction of electric arc being drawn in to arc control device, the slotted eye of interlayer grid sheet staggers and has reduced the resistance that electric arc enters grid sheet, can increase the speed that electric arc elongates, promote electric arc and through arc extinguishing grid pieces, cut apart at a high speed, arc quenching effect is better.
The fixed contact 413 of described fixed contact 41 is 165 ° to 195 ° with the angle that moving contact side 421 forms.Specifically, the fixed contact 413 of described fixed contact 41 parallels with moving contact side 421.Electric current is when fixed contact, fixed contact flow to moving contact, form class U font current circuit, make product can form reliable electrodynamic repulsion force when high electric current, guarantee the metering function of product, product can make circuit breaker fast, reliably thread off when high electric current, and produced simultaneously electrodynamic repulsion force can make electric arc elongate, drawing-down, form large arc resistance, make arc energy be introduced into fast arc control device, further increase the arc extinction performance of product.
Every technical staff's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this utility model; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (10)
1. the DC circuit breaker of a permanent magnetism auxiliary extinction of arc function, comprise housing (1), in described housing (1), be provided with operating system (2), tripping system (3), contact system (4) and arc quenching system (5), described arc quenching system (5) comprises arc control device (51) and is located at the multi-disc arc extinguishing grid pieces (52) in arc control device (51), described contact system (4) comprises fixed contact (41) and moving contact (42), on described fixed contact (41), be connected with arc striking piece (411), described arc striking piece (411) is located at the upper end of arc control device (51), it is characterized in that: described housing (1) is provided with through hole (11), between described through hole (11) and arc control device (51), be provided with communicating passage (12), between described through hole (11) and arc control device (51), be provided with flash barrier (6), described flash barrier (6) is provided with air vent hole (61).
2. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, it is characterized in that being provided with dividing plate (13) in described housing (1), described dividing plate (13) arranges and communicating passage (12) is divided into multiple tracks along communicating passage (12).
3. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, is characterized in that described flash barrier (6) is S-shaped and is integral type structure.
4. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, is characterized in that described flash barrier (6) has between polylith and adjacent flash barrier (6) to be provided with gap.
5. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, is characterized in that being provided with magnetic patch (7) in described housing (1), and it is upper and corresponding with moving contact (42) that described magnetic patch (7) is located at arc striking piece (411).
6. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 5, is characterized in that described fixed contact (41) is provided with clamping part (412), and described magnetic patch (7) is located in clamping part (412).
7. according to the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function described in claim 5 or 6, it is characterized in that described magnetic patch (7) adopts ndfeb magnet.
8. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, is characterized in that the V shaped hole (521) that described arc extinguishing grid pieces (52) is provided with on V shaped hole (521) and adjacent arc extinguishing grid pieces (52) shifts to install.
9. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 1, is characterized in that the fixed contact (413) of described fixed contact (41) and the angle that moving contact side (421) forms are 165 ° to 195 °.
10. the DC circuit breaker of a kind of permanent magnetism auxiliary extinction of arc function according to claim 9, is characterized in that the fixed contact (413) of described fixed contact (41) parallels with moving contact side (421).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394490.3U CN203950766U (en) | 2014-07-17 | 2014-07-17 | A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394490.3U CN203950766U (en) | 2014-07-17 | 2014-07-17 | A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function |
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| Publication Number | Publication Date |
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| CN203950766U true CN203950766U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420394490.3U Active CN203950766U (en) | 2014-07-17 | 2014-07-17 | A kind of DC circuit breaker of permanent magnetism auxiliary extinction of arc function |
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| CN (1) | CN203950766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307157B6 (en) * | 2017-03-21 | 2018-02-07 | Hess R&D, S.R.O. | A current circuit breaker |
-
2014
- 2014-07-17 CN CN201420394490.3U patent/CN203950766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307157B6 (en) * | 2017-03-21 | 2018-02-07 | Hess R&D, S.R.O. | A current circuit breaker |
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