CN203085442U - Permanent-magnetic Arc blowing device for DC isolating switch - Google Patents
Permanent-magnetic Arc blowing device for DC isolating switch Download PDFInfo
- Publication number
- CN203085442U CN203085442U CN 201320043018 CN201320043018U CN203085442U CN 203085442 U CN203085442 U CN 203085442U CN 201320043018 CN201320043018 CN 201320043018 CN 201320043018 U CN201320043018 U CN 201320043018U CN 203085442 U CN203085442 U CN 203085442U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- arc
- isolating switch
- arc extinguishing
- permanent
- 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.)
- Expired - Fee Related
Links
- 238000007664 blowing Methods 0.000 title claims abstract 6
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 description 14
- 238000010891 electric arc Methods 0.000 description 13
- 230000005389 magnetism Effects 0.000 description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
本实用新型涉及一种用于直流隔离开关的永磁吹弧结构，主要解决现有直流隔离开关在使用时存在的分断能力不理想的问题。包括动触头、静触头及设在静触头下方的灭弧栅片，所述静触头与灭弧栅片之间设有永磁体。具有灭弧能力强，分断电流大的特点。
The utility model relates to a permanent magnet arc blowing structure for a DC isolating switch, which mainly solves the problem of unsatisfactory breaking capacity of the existing DC isolating switch in use. It includes a moving contact, a static contact and an arc extinguishing grid set under the static contact, and a permanent magnet is arranged between the static contact and the arc extinguishing grid. It has the characteristics of strong arc extinguishing ability and large breaking current.
Description
Technical field
The utility model relates to a kind of isolating switch, refers in particular to a kind of permanent magnetism arc blow-out structure that is used for the DC-isolation switch.
Background technology
Isolating switch is a kind of electrical equipment commonly used in the device for switching, is to play buffer action in circuit.When the disjunction of DC-isolation switch, can between dynamic/static contact, produce electric arc, a large amount of heat that electric arc brings and generation air ionization, if electric arc is overstand scaling loss DC-isolation switch contact even cause arc short-circuit demolition switch probably for a long time between dynamic/static contact, this just needs blow-out as early as possible to handle.The common way of DC-isolation switch is to be provided with arc extinguishing grid pieces below the contact zone of fixed contact and moving contact at present, the electric arc that produces leaves voltage contact area and enters arc extinguishing grid pieces and carry out arc extinguishing, right existing arc extinguishing grid pieces is distant from the distance of contact regions, electric arc is subjected to magnetic blow-out power weak effect, electric arc can't be blown into arc extinguishing grid pieces, the easy scaling loss of DC-isolation switch, breaking capacity is undesirable.
The utility model content
In order to overcome deficiency and the defective in the background technology, the utility model provides a kind of permanent magnetism arc blow-out structure that is used for the DC-isolation switch, mainly solves the unfavorable problem of breaking capacity that existing DC-isolation switch exists in use.
The technical solution of the utility model is: a kind of permanent magnetism arc blow-out structure that is used for the DC-isolation switch, and comprise moving contact, fixed contact and be located at the arc extinguishing grid pieces of fixed contact below, it is characterized in that: be provided with permanent magnet between described fixed contact and the arc extinguishing grid pieces.
Described permanent magnet is divided into first permanent magnet and second permanent magnet, and described first permanent magnet is located in the pedestal of fixed contact place, and described second permanent magnet is located in the support of moving contact place, and corresponding with first permanent magnet.
Also include anodal wiring circuit and negative pole wiring circuit, in anodal wiring circuit, the N utmost point of described first permanent magnet is extremely corresponding with the S of second permanent magnet, and in negative pole wiring circuit, the S utmost point of described first permanent magnet is extremely corresponding with the N of second permanent magnet.
Described permanent magnet is a bar magnet.
The beneficial effects of the utility model: owing to take such scheme, the permanent magnetism arc blow-out structure that is used for the DC-isolation switch of the present utility model, the electromagnetic force that electric arc when by permanent magnet circuit being disconnected produces, electric arc is blown into arc extinguishing grid pieces realizes quick arc extinguishing, effectively improved arc quenching effect, arcing time is shortened greatly, thereby effectively prevent the high hot calcination DC-isolation switch contact of electric arc even cause arc short-circuit demolition switch, cause security incident, it is strong to have the arc extinguishing ability, the characteristics that breaking current is big.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the partial sectional view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the structure cutaway view of A-A face among Fig. 3.
Among the figure, fixed contact 1, support 2, arc extinguishing grid pieces 3, moving contact 4, pedestal 5, the first permanent magnets 6, the second permanent magnets 7.
Embodiment
At accompanying drawing embodiment of the present utility model is described further below:
Shown in figure, the permanent magnetism arc blow-out structure that this is used for the DC-isolation switch comprises moving contact 4, fixed contact 1 and is located at the arc extinguishing grid pieces 3 of fixed contact 1 below, is provided with permanent magnet between described fixed contact 1 and the arc extinguishing grid pieces 3.This structure also includes anodal wiring circuit and negative pole wiring circuit, in anodal wiring circuit, the N utmost point of described first permanent magnet is extremely corresponding with the S of second permanent magnet, and in negative pole wiring circuit, the S utmost point of described first permanent magnet is extremely corresponding with the N of second permanent magnet.As preferred described permanent magnet is bar magnet, as preferred be two utmost point dc switchs as the DC-isolation switch among the figure, promptly use four breakpoints of two utmost points, by this know-why, structurally also can use multistage multibreak series connection, as six breakpoints of three utmost points, eight breakpoints of four utmost points etc., arc quenching plate all is set between each electrode, improves breaking capacity or improve the working voltage grade.Determine after the polarity permanent magnet to be fixed between arc extinguishing grid pieces and the dynamic/static contact contact point according to left hand rule, in the arc extinguishing process, the magnetic field force promotion electric arc that produces by permanent magnet enters the quick arc extinguishing that arc extinguishing grid pieces is realized the DC-isolation switch.Effectively raise and lead arc and arc extinguishing efficient, prevent that the high thermal burn contact of electric arc from causing security incident, it is strong to have the arc extinguishing ability, the characteristics that breaking current is big.
Described permanent magnet is divided into first permanent magnet 6 and second permanent magnet 7, and described first permanent magnet 6 is located in the fixed contact 1 place pedestal 5, and described second permanent magnet 7 is located in the moving contact 4 place supports 2, and corresponding with first permanent magnet 6.The polarity of permanent magnet is determined direction by left hand rule, makes the suffered electromagnetic force of electric arc point to arc extinguishing grid pieces, and the electromagnetic force that produces between first permanent magnet and second permanent magnet blows to arc extinguishing grid pieces with electric arc, realizes quick arc extinguishing.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043018 CN203085442U (en) | 2013-01-25 | 2013-01-25 | Permanent-magnetic Arc blowing device for DC isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043018 CN203085442U (en) | 2013-01-25 | 2013-01-25 | Permanent-magnetic Arc blowing device for DC isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085442U true CN203085442U (en) | 2013-07-24 |
Family
ID=48831258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320043018 Expired - Fee Related CN203085442U (en) | 2013-01-25 | 2013-01-25 | Permanent-magnetic Arc blowing device for DC isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085442U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192570A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of direct current PC grades of twin-power switch arc extinguishing structures |
| CN109585193A (en) * | 2018-12-14 | 2019-04-05 | 首瑞（天津）电气设备有限公司 | Switching device |
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
-
2013
- 2013-01-25 CN CN 201320043018 patent/CN203085442U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111527576A (en) * | 2017-12-27 | 2020-08-11 | Ls电气株式会社 | Direct current breaker |
| US11430621B2 (en) | 2017-12-27 | 2022-08-30 | Ls Electric Co., Ltd. | DC circuit breaker |
| CN109192570A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of direct current PC grades of twin-power switch arc extinguishing structures |
| CN109585193A (en) * | 2018-12-14 | 2019-04-05 | 首瑞（天津）电气设备有限公司 | Switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20150125 |
|
| EXPY | Termination of patent right or utility model |