CN202871727U - Arc blow-out apparatus of direct-current breaker - Google Patents
Arc blow-out apparatus of direct-current breaker Download PDFInfo
- Publication number
- CN202871727U CN202871727U CN 201220559026 CN201220559026U CN202871727U CN 202871727 U CN202871727 U CN 202871727U CN 201220559026 CN201220559026 CN 201220559026 CN 201220559026 U CN201220559026 U CN 201220559026U CN 202871727 U CN202871727 U CN 202871727U
- Authority
- CN
- China
- Prior art keywords
- moving contact
- auxiliary
- contact
- arc
- auxiliary moving
- 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 - Lifetime
Links
Images
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a component of low-pressure power transmission equipment, and in particular relates to an arc blow-out apparatus of a direct-current breaker, which is used for quenching an electric arc in the process of cut-off of the direct-current breaker. A moving contact of the apparatus is provided with an auxiliary moving contact and a spring capable of making the auxiliary moving contact swing towards a closing direction. The auxiliary moving contact and the moving contact are conductively connected through flexible coupling. An auxiliary static contact is arranged at the opposite side of the auxiliary moving contact. The auxiliary static contact is connected with a static contact through a coil. The coil is wound on an iron core. The two ends of the iron core are respectively connected with magnet guiding arms. The two magnet guiding arms respectively extend to the two sides of cut-off openings of the auxiliary moving contact and the auxiliary static contact. According to the utility model, by means of the unique structure of the auxiliary moving contact and the auxiliary stationary contact, an arc blow-out loop is formed when current is cut off so that the electric arc between the contacts can be quickly blown away from the contracts under the function of an applied magnetic field, thereby realizing the quick arc extinguishing effect; and through an arc extinguishing grid sheet, the electric arc can be further divided, thereby enhancing the arc extinguishing effect.
Description
Technical field
The utility model relates to a kind of parts of low voltage power transmission equipment, specifically a kind of arc-blowing device of direct-current circuit breaker that is used in dc circuit breaker interrupting process extinguish arcs.
Background technology
Dc circuit breaker is when cut-offfing little electric current, because electric current is less, arc energy a little less than, electric arc tends to rest between the dynamic/static contact, and can not fast to the arc control device motion, may cause cut-offfing very difficult, arcing time is long, even can not cut-off, and then the circuit breaker dynamic/static contact is brought very serious ablation, even can burn whole circuit breaker.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of arc extinguishing ability can improve the dc circuit breaker contact and cut-off the time, the arc-blowing device of direct-current circuit breaker that operational reliability is high.
Arc-blowing device of direct-current circuit breaker of the present utility model includes fixing fixed contact and can be closed by swing and moving contact or the moving contact of disconnection; Be provided with an auxiliary moving contact on the described moving contact, auxiliary moving contact is hinged on the moving contact, be provided with the spring that auxiliary moving contact is swung to closing direction between auxiliary moving contact and the moving contact matrix, also conduct electricity by being flexible coupling between auxiliary moving contact and the moving contact and be connected; Auxiliary moving contact offside is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact that cooperates, auxiliary fixed contact is connected with fixed contact through one section coil, described coil is on an iron core, the two ends of iron core respectively are connected with one section and draw magnetic arm, and two sections are drawn the both sides that magnetic arm extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Described auxiliary moving contact and spring force between the moving contact can make contacting early than contacting between moving contact and the fixed contact between auxiliary moving contact and the auxiliary fixed contact when dc circuit breaker closes a floodgate, and can make the disjunction of assisting between moving contact and the auxiliary fixed contact be later than disjunction between moving contact and the fixed contact when the dc circuit breaker separating brake.
Also be provided with arc extinguishing grid pieces drawing on the electromagnetic action force direction of magnetic arm to electric arc.
The utility model is when moving contact and fixed contact normally divide, close, unique texture by auxiliary moving contact and auxiliary stationary contact, when drop-out current, form the arc blow-out loop, utilize electric current self to form magnetic field, and by increasing magnetic structure so that magnetic field strengthens, and act between the contact of breaker, so that the electric arc between the contact is under the effect of externally-applied magnetic field, the contact that can blow off fast reaches the effect of fast arc extinction; By arc extinguishing grid pieces, further subdividing the arc strengthens arc quenching effect.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the perspective view of the utility model embodiment.
Embodiment
As shown in the figure, this arc-blowing device of direct-current circuit breaker includes fixing fixed contact 1 and can be closed with moving contact by swing or the moving contact 2 of disconnection; Be provided with an auxiliary moving contact 3 on the moving contact 2, auxiliary moving contact is hinged on the moving contact 2, be provided with the spring 4 that auxiliary moving contact 3 is swung to closing direction between the matrix of auxiliary moving contact 3 and moving contact 2, also conduct electricity by being flexible coupling between auxiliary moving contact 3 and the moving contact 2 and be connected; The offside of auxiliary moving contact 3 is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact 5 that cooperates, auxiliary fixed contact 5 is connected with fixed contact 1 through one section coil 6, coil 6 is on an iron core 7, the two ends of iron core respectively are connected with one section and draw 8, two sections of magnetic arms and draw the both sides that magnetic arm 8 extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Auxiliary moving contact 3 and spring force between the moving contact 2 can make contacting early than contacting between moving contact 2 and the fixed contact 1 between auxiliary moving contact 3 and the auxiliary fixed contact 5 when dc circuit breaker closes a floodgate, and can make the disjunction of assisting between moving contact 3 and the auxiliary fixed contact 5 be later than disjunction between moving contact 2 and the fixed contact 1 when the dc circuit breaker separating brake.On the electromagnetic action force direction that draws 8 pairs of electric arcs of magnetic arm, also be provided with arc extinguishing grid pieces 9.
The utility model operation principle is as follows: when circuit breaker was in "on" position, the electric current Main Current was crossed between moving contact 2 and the fixed contact 1; During disjunction, because auxiliary moving contact and auxiliary fixed contact disjunction are slower, therefore electric arc results between auxiliary moving contact 3 and the auxiliary fixed contact 5, this arc current flows through blow-out coil 6, thereby produces arc blow-out magnetic field, by drawing magnetic arm 8, arc blow-out magnetic field is added on the electric arc vertical direction, thereby make electric arc produce an amesiality electromagnetic force, electric arc is blowed to arc extinguishing grid pieces, electric arc is extinguished rapidly.
Claims (2)
1. arc-blowing device of direct-current circuit breaker includes fixing fixed contact (1) and can be closed by swing and moving contact or the moving contact (2) that disconnects; It is characterized in that: be provided with an auxiliary moving contact (3) on the moving contact (2), auxiliary moving contact is hinged on the moving contact (2), be provided with the spring (4) that auxiliary moving contact (3) is swung to closing direction between the matrix of auxiliary moving contact (3) and moving contact (2), also conduct electricity by being flexible coupling between auxiliary moving contact (3) and the moving contact (2) and be connected; The offside of auxiliary moving contact (3) is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact (5) that cooperates, auxiliary fixed contact (5) is connected with fixed contact (1) through one section coil (6), coil (6) is on an iron core (7), the two ends of iron core respectively are connected with one section and draw magnetic arm (8), and two sections are drawn the both sides that magnetic arm (8) extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Auxiliary moving contact (3) and spring force between the moving contact (2) can make contacting early than contacting between moving contact (2) and the fixed contact (1) between auxiliary moving contact (3) and the auxiliary fixed contact (5) when dc circuit breaker closes a floodgate, and can make disjunction between auxiliary moving contact (3) and the auxiliary fixed contact (5) be later than disjunction between moving contact (2) and the fixed contact (1) when the dc circuit breaker separating brake.
2. arc-blowing device of direct-current circuit breaker according to claim 1 is characterized in that: also be provided with arc extinguishing grid pieces (9) drawing on the electromagnetic action force direction of magnetic arm (8) to electric arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220559026 CN202871727U (en) | 2012-10-29 | 2012-10-29 | Arc blow-out apparatus of direct-current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220559026 CN202871727U (en) | 2012-10-29 | 2012-10-29 | Arc blow-out apparatus of direct-current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871727U true CN202871727U (en) | 2013-04-10 |
Family
ID=48038421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220559026 Expired - Lifetime CN202871727U (en) | 2012-10-29 | 2012-10-29 | Arc blow-out apparatus of direct-current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871727U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915894A (en) * | 2012-10-29 | 2013-02-06 | 大全集团有限公司 | Arc blowing device of direct current circuit breaker |
| CN109935499A (en) * | 2019-04-26 | 2019-06-25 | 上海立新电器控制设备有限公司 | A kind of contact assembly and the towing vehicle DC. current electromagnetic contactor using it |
-
2012
- 2012-10-29 CN CN 201220559026 patent/CN202871727U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915894A (en) * | 2012-10-29 | 2013-02-06 | 大全集团有限公司 | Arc blowing device of direct current circuit breaker |
| CN102915894B (en) * | 2012-10-29 | 2015-10-28 | 大全集团有限公司 | Arc-blowing device of direct-current circuit breaker |
| CN109935499A (en) * | 2019-04-26 | 2019-06-25 | 上海立新电器控制设备有限公司 | A kind of contact assembly and the towing vehicle DC. current electromagnetic contactor using it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200941346Y (en) | Electromagnetic arc blower of a.c. electromagnetic contactor | |
| CN107393779B (en) | AC/DC universal circuit breaker with strong arc extinguishing effect | |
| CN203536287U (en) | Low-voltage permanent magnetic vacuum contactor | |
| CN102915894B (en) | Arc-blowing device of direct-current circuit breaker | |
| CN202871727U (en) | Arc blow-out apparatus of direct-current breaker | |
| CN103871796A (en) | Magnetism enhancement and arc guide device of miniature circuit breaker and miniature circuit breaker provided with magnetism enhancement and arc guide device | |
| CN204516637U (en) | Fixed contact | |
| CN205069539U (en) | Communication circuit breaker of good reliability | |
| CN107527773B (en) | Universal circuit breaker with arc extinguishing performance | |
| CN107706055B (en) | High-voltage relay resistant to instantaneous large current impact | |
| CN207303018U (en) | A kind of omnipotent breaker | |
| CN107622908B (en) | Movable double-loop contact structure and vacuum arc-extinguishing chamber | |
| CN202423143U (en) | Electromagnetic switching device | |
| CN201918340U (en) | Small-sized circuit breaker | |
| CN102610456B (en) | Thermomagnetic circuit breaker and controller switching equipment | |
| CN212113572U (en) | Shielding arc-extinguishing device of contactor contact | |
| CN203300582U (en) | Circuit breaker | |
| CN203826320U (en) | Magnetism-increasing and arc-guiding apparatus of miniature circuit breaker and miniature circuit breaker with magnetism-increasing and arc-guiding apparatus | |
| CN207303020U (en) | A kind of high breaking moulded case circuit breaker arc-control device | |
| CN104167340A (en) | Circuit breaker | |
| JP6958882B2 (en) | High voltage relay that is resistant to the effects of momentary high current | |
| CN207993777U (en) | D.C. contactor polarized combined type arc-control device | |
| CN201780948U (en) | Arc striking mechanism of low-voltage apparatus breaker | |
| CN207303017U (en) | A kind of AC and DC omnipotent breaker with stronger arc quenching effect | |
| CN202651039U (en) | Miniature breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |