CN105470062A - Direct-current breaker - Google Patents
Direct-current breaker Download PDFInfo
- Publication number
- CN105470062A CN105470062A CN201511002035.XA CN201511002035A CN105470062A CN 105470062 A CN105470062 A CN 105470062A CN 201511002035 A CN201511002035 A CN 201511002035A CN 105470062 A CN105470062 A CN 105470062A
- Authority
- CN
- China
- Prior art keywords
- disjunction unit
- disjunction
- circuit breaker
- arc
- breaker according
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
-
- 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
- H01H73/04—Contacts
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
The invention provides a direct-current breaker, and mainly aims at solving the problems of low breaking capacity and poor using effect due to the fact that each loop of an existing bipolar direct-current breaker in the market is only provided with a breaking mechanism comprising a moving contact and a static contact. According to the direct-current breaker provided by the invention, by a traditional quadripolar breaker, two adjacent breaking units are connected with each other through a line bank to form two loops; and each loop is provided with two breaking mechanisms comprising the moving contacts and the static contacts. Compared with the traditional bipolar breaker, each loop is added with one breaking mechanism, so that the breaking capacity of the bipolar breaker is improved; and the using effect is better.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, have and relate to a kind of DC circuit breaker.
Background technology
Along with the continuous growth of electricity needs, China carries out power infrastructures construction energetically, and wherein the relation of DC distribution system and people's daily life is more and more tightr.Relative to interchange power supply-distribution system, DC distribution system has that circuit cost is low, capacity is large, regulate the advantages such as rapid, reliable, have employed DC distribution system in many important industries such as current China city trolley bus, railway, solar power generation, smelting, chemical industry, mine.DC circuit breaker is the key equipment of direct current system safe operation, must be able to reliably connect, 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 hour and disjunction loop.
The each loop of the two poles of the earth DC circuit breaker in present market only has a disjunction mechanism be made up of moving contact and fixed contact, and breaking capacity is not strong, and result of use is not good.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of DC circuit breaker, the each loop of the two poles of the earth DC circuit breaker mainly solved on present market only has a disjunction mechanism be made up of moving contact and fixed contact, and breaking capacity is not strong, the problem that result of use is not good.
The technical solution adopted in the present invention is:
A kind of DC circuit breaker, comprise housing, described housing is provided with the first disjunction unit, the second disjunction unit, the 3rd disjunction unit and the 4th disjunction unit, described first, second and third includes disjunction mechanism, arc-extinguishing mechanism and binding post with four disjunction unit, and the first line bank that described first disjunction unit and the second disjunction unit are connected to the binding post of described first disjunction unit and the binding post of the second disjunction unit by two ends forms the first loop;
The second line bank that described 3rd disjunction unit and the 4th disjunction unit are connected to the binding post of described 3rd disjunction unit and the binding post of the 4th disjunction unit by two ends forms second servo loop.
Described first disjunction unit or the second disjunction unit are provided with release.
Described first line bank middle-end is also provided with heating panel, and described heating panel is provided with some radiating grooves.
Described disjunction mechanism comprises the moving contact and static contact that correspondence is provided with, described arc-extinguishing mechanism comprises arc control device, described static contact is provided with fixed contact, described arc control device are corresponding with described fixed contact to be arranged, also comprise magnetic blow-out device and aerogenesis plate, described magnetic blow-out device and aerogenesis plate correspondence to be located between described static contact and described arc control device and for being scolded out by described moving contact the electric arc produced during static contact to lead described arc control device.
Described magnetic blow-out device comprises the magnetic conduction sheet that magnetic conductive board and magnetic conduction sheet two ends are provided with, and described magnetic conductive board and described magnetic conduction sheet are crowded around and innerly formed a striking passage towards described arc control device and described fixed contact correspondence is located in described striking passage.
Be provided with for the buckling groove with described magnetic conduction sheet snap-fit engagement bottom described aerogenesis plate.
Described static contact leading portion is provided with the bending part of U-shaped, and described bending part inwall forms the U-type groove being used for magnetic conductive board described in clamping.
Described arc control device comprise 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.
Described static contact is also provided with the link extended downwards, is connected with described bending part bottom described link.
The invention has the beneficial effects as follows: the invention provides a kind of DC circuit breaker, adopt traditional four-pole circuit breaker, its adjacent two disjunction unit are linked together by line bank, such formation two loops, and each loop is provided with two disjunction mechanisms be made up of dynamic and static contact, therefore every bar loop has had more a set of segmentation mechanism relative to traditional the two poles of the earth circuit breaker, and improve the breaking capacity of the two poles of the earth circuit breaker, result of use is better.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of one embodiment of the invention.
Fig. 2 is the partial schematic diagram of one embodiment of the invention.
Fig. 3 is the sectional perspective schematic diagram of one embodiment of the invention.
Fig. 4 is the cross-sectional schematic of the disjunction mechanism of one embodiment of the invention.
Fig. 5 is the sectional perspective schematic diagram of the disjunction mechanism of one embodiment of the invention.
Fig. 6 is the sectional perspective schematic diagram of the disjunction mechanism of one embodiment of the invention.
Fig. 7 is the schematic perspective view of the static contact of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described: as shown in the figure, a kind of DC circuit breaker, comprise housing 1, described housing 1 is provided with the first disjunction unit 21, second disjunction unit 22, 3rd disjunction unit 23 and the 4th disjunction unit 24, described first, two, three and four disjunction unit include disjunction mechanism, arc-extinguishing mechanism and binding post 25, the first line bank 211 that described first disjunction unit 21 and the second disjunction unit 22 are connected to the binding post 25 of described first disjunction unit 21 and the binding post 25 of the second disjunction unit 22 by two ends forms the first loop,
The second line bank 212 that described 3rd disjunction unit 23 and the 4th disjunction unit 24 are connected to the binding post 25 of described 3rd disjunction unit 23 and the binding post 25 of the 4th disjunction unit 24 by two ends forms second servo loop.The invention provides a kind of DC circuit breaker, adopt traditional four-pole circuit breaker, its adjacent two disjunction unit are linked together by line bank, such formation two loops, and often overlap loop and be provided with two disjunction mechanisms be made up of dynamic and static contact, therefore every bar loop has had more a set of segmentation mechanism relative to traditional the two poles of the earth circuit breaker, and improve the breaking capacity of the two poles of the earth circuit breaker, result of use is better.
In the present invention, as shown in the figure, described first disjunction unit 21 or the second disjunction unit 22 are provided with release 26.Article 1, loop only need be provided with a release, and the 3rd disjunction unit and the 4th disjunction unit are in like manner.
In the present invention, as shown in the figure, described first line bank 211 middle-end is also provided with heating panel 2111, and described heating panel 2111 is provided with some radiating grooves 2112.Heating panel has the effect of current-carrying and heat radiation, prevents temperature too high, increases useful life.
In the present invention, as shown in the figure, described disjunction mechanism comprises the moving contact 51 and static contact 52 that correspondence is provided with, described arc-extinguishing mechanism comprises arc control device 6, described static contact 52 is provided with fixed contact 521, described arc control device 6 are corresponding with described fixed contact 521 to be arranged, and also comprises magnetic blow-out device and aerogenesis plate 62, and described magnetic blow-out device and aerogenesis plate 62 correspondence to be located between described static contact 52 and described arc control device 6 and for being scolded out by described moving contact 51 electric arc produced during static contact 52 to lead described arc control device 6.When big current passes through, can be scolded due to electrodynamic repulsion force moving contact and be held, scolding in the process held and electric arc can being produced, 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 be greater than front end air pressure, and the gas that contact produces in disconnection process sprays toward arc control device direction under the effect of draught head, grid in arc control device cuts off electric arc, and electric arc is extinguished fast.Electric arc blows toward arc control device direction by magnetic blow-out device, and accelerate arc extinction efficiency further, improve arc extinguishing efficiency, breaking capacity is stronger.
In the present invention, as shown in the figure, described magnetic blow-out device comprises the magnetic conduction sheet 42 that magnetic conductive board 41 and magnetic conduction sheet 41 two ends are provided with, and described magnetic conductive board 41 and described magnetic conduction sheet 42 are crowded around and innerly formed a striking passage 43 towards described arc control device 6 and described fixed contact 521 correspondence is located in described striking passage 43.Here magnetic conductive board is that magnetic material is made, further magnet can be adopted, be convenient to obtain, magnetic conduction sheet is that conductor is made, further iron plate can be adopted, magnetic conductive board and magnetic conduction sheet form the magnetic field being used for electric arc being pushed to arc control device, and electric arc produces between the fixed contact of moving contact, is blown into arc extinguishing in arc control device by magnetic field.
In the present invention, as shown in the figure, be provided with bottom described aerogenesis plate 62 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 the present invention, as shown in the figure, described static contact 52 leading portion is provided with the bending part 522 of U-shaped, and described bending part 522 inwall forms the U-type groove being used for magnetic conductive board 41 described in clamping.Magnetic conductive board easier for installation, result of use is better.
In the present invention, as shown in the figure, described arc control device 6 comprise the arc extinguishing grid pieces group 61 formed uniformly at intervals by some arc extinguishing grid pieces 611, are provided with the escape groove 612 for hold described magnetic conduction sheet 42 corresponding with described magnetic conduction sheet 42 bottom described arc extinguishing grid pieces group 61.Magnetic conduction sheet can be prevented in arc control device, and decrease the distance of arc extinguishing passage, structure is compacter, and result of use is better.
In the present invention, as shown in the figure, described arc extinguishing grid pieces 611 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 the present invention, as shown in the figure, some described arc extinguishing grid pieces 611 axial directions arcuately distribute.Running orbit due to moving contact is arc, and the distribution of arc extinguishing grid pieces also correspondence is set to arc, and be convenient to arc extinguishing, result of use is better.
In the present invention, as shown in the figure, described static contact 52 is also provided with the link 523 extended downwards, is connected with described bending part 522 bottom described link 523.Its static contact is also provided with the link extended downwards, is connected bottom link with bending part, bending part is equipped with magnetic conduction sheet, what thereby increase moving contact and static contact opens distance, and improve the breaking capacity of circuit breaker, result of use is better.
Embodiment should not be considered as limitation of the present invention, but any improvement done based on spirit of the present invention, all should within protection scope of the present invention.
Claims (10)
1. a DC circuit breaker, comprise housing (1), described housing (1) is provided with the first disjunction unit (21), second disjunction unit (22), 3rd disjunction unit (23) and the 4th disjunction unit (24), described first, two, three and four disjunction unit include disjunction mechanism, arc-extinguishing mechanism and binding post (25), it is characterized in that: the first line bank (211) that described first disjunction unit (21) and the second disjunction unit (22) are connected to the binding post (25) of described first disjunction unit (21) and the binding post (25) of the second disjunction unit (22) by two ends forms the first loop,
The second line bank (212) that described 3rd disjunction unit (23) and the 4th disjunction unit (24) are connected to the binding post (25) of described 3rd disjunction unit (23) and the binding post (25) of the 4th disjunction unit (24) by two ends forms second servo loop.
2. a kind of DC circuit breaker according to claim 1, is characterized in that: described first disjunction unit (21) or the second disjunction unit (22) are provided with release (26).
3. a kind of DC circuit breaker according to claim 1, is characterized in that: described first line bank (211) middle-end is also provided with heating panel (2111), and described heating panel (2111) is provided with some radiating grooves (2112).
4. a kind of DC circuit breaker according to claim 1, it is characterized in that: described disjunction mechanism comprises the moving contact (51) and static contact (52) that correspondence is provided with, described arc-extinguishing mechanism comprises arc control device (6), described static contact (52) is provided with fixed contact (521), described arc control device (6) are corresponding with described fixed contact (521) to be arranged, also comprise magnetic blow-out device and aerogenesis plate (62), described magnetic blow-out device and aerogenesis plate (62) correspondence to be located between described static contact (52) and described arc control device (6) and for being scolded out by described moving contact (51) electric arc produced time static contact (52) to lead described arc control device (6).
5. a kind of DC circuit breaker according to claim 4, it is characterized in that: described magnetic blow-out device comprises the magnetic conduction sheet (42) that 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 innerly formed a striking passage (43) towards described arc control device (6) and described fixed contact (521) correspondence is located in described striking passage (43).
6. a kind of DC circuit breaker according to claim 5, is characterized in that: described aerogenesis plate (62) bottom is provided with for the buckling groove with described magnetic conduction sheet (42) snap-fit engagement.
7. a kind of DC circuit breaker according to claim 5, is characterized in that: described static contact (52) leading portion is provided with the bending part (522) of U-shaped, and described bending part (522) inwall forms the U-type groove being used for magnetic conductive board (41) described in clamping.
8. a kind of DC circuit breaker according to claim 5, it is characterized in that: described arc control device (6) comprise the arc extinguishing grid pieces group (61) formed uniformly at intervals by some arc extinguishing grid pieces (611), described arc extinguishing grid pieces group (61) bottom is provided with the escape groove (612) for hold described magnetic conduction sheet (42) corresponding with described magnetic conduction sheet (42).
9. a kind of DC circuit breaker according to claim 8, is characterized in that: described arc extinguishing grid pieces (611) is uniform staggered with.
10. a kind of DC circuit breaker according to claim 7, is characterized in that: described static contact (52) is also provided with the link (523) extended downwards, and described link (523) bottom is connected with described bending part (522).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002035.XA CN105470062A (en) | 2015-12-29 | 2015-12-29 | Direct-current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002035.XA CN105470062A (en) | 2015-12-29 | 2015-12-29 | Direct-current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105470062A true CN105470062A (en) | 2016-04-06 |
Family
ID=55607654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002035.XA Pending CN105470062A (en) | 2015-12-29 | 2015-12-29 | Direct-current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107622928A (en) * | 2017-09-26 | 2018-01-23 | 厦门宏发开关设备有限公司 | A kind of high voltage DC breaker that can improve arc extinguishing ability |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001155616A (en) * | 1999-11-30 | 2001-06-08 | Mitsubishi Electric Corp | Circuit breaker |
| CN202268314U (en) * | 2011-10-25 | 2012-06-06 | 常熟开关制造有限公司(原常熟开关厂） | Multi-breakpoint direct current type molded case circuit breaker |
| CN204558301U (en) * | 2015-04-15 | 2015-08-12 | 浙江天正电气股份有限公司 | A kind of arc quenching system with magnetic blow-out formula and air-sweeping type arc extinguishing structure |
-
2015
- 2015-12-29 CN CN201511002035.XA patent/CN105470062A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001155616A (en) * | 1999-11-30 | 2001-06-08 | Mitsubishi Electric Corp | Circuit breaker |
| CN202268314U (en) * | 2011-10-25 | 2012-06-06 | 常熟开关制造有限公司(原常熟开关厂） | Multi-breakpoint direct current type molded case circuit breaker |
| CN204558301U (en) * | 2015-04-15 | 2015-08-12 | 浙江天正电气股份有限公司 | A kind of arc quenching system with magnetic blow-out formula and air-sweeping type arc extinguishing structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107622928A (en) * | 2017-09-26 | 2018-01-23 | 厦门宏发开关设备有限公司 | A kind of high voltage DC breaker that can improve arc extinguishing ability |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |