CN102915894B - Arc-blowing device of direct-current circuit breaker - Google Patents
Arc-blowing device of direct-current circuit breaker Download PDFInfo
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- CN102915894B CN102915894B CN201210419983.3A CN201210419983A CN102915894B CN 102915894 B CN102915894 B CN 102915894B CN 201210419983 A CN201210419983 A CN 201210419983A CN 102915894 B CN102915894 B CN 102915894B
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Abstract
The present invention relates to a kind of parts of low voltage power transmission equipment, specifically a kind of arc-blowing device of direct-current circuit breaker being used in DC circuit breaker interrupting process extinguish arcs.Its moving contact is provided with auxiliary moving contact, and is provided with the spring that auxiliary moving contact can be made to swing to closing direction, auxiliary also conduction by being flexible coupling between moving contact with moving contact is connected; Auxiliary moving contact offside is provided with auxiliary fixed contact, auxiliary fixed contact is connected with fixed contact through one section of coil, coil is around on an iron core, and the two ends of iron core are respectively connected with one section and draw magnetic arm, and two sections are drawn magnetic arm and extend to the both sides that auxiliary moving contact and auxiliary fixed contact disconnect opening respectively.The present invention is by the unique texture of auxiliary moving contact and auxiliary stationary contact, and form arc blow-out loop when drop-out current, make the electric arc between contact under the effect of externally-applied magnetic field, can blow off contact fast, reaches the effect of fast arc extinction; By arc extinguishing grid pieces, can subdividing the arc further, strengthen arc quenching effect.
Description
Technical field
The present invention relates to a kind of parts of low voltage power transmission equipment, specifically a kind of arc-blowing device of direct-current circuit breaker being used in DC circuit breaker interrupting process extinguish arcs.
Background technology
DC circuit breaker is when cut-offfing small area analysis, because electric current is less, arc energy is more weak, electric arc tends to rest between dynamic/static contact, and can not, fast to arc control device motion, may cause cut-offfing very difficult, arcing time is long, even can not cut-off, and then very serious ablation is brought to circuit breaker dynamic/static contact, even can burn whole circuit breaker.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of arc extinguishing ability that can improve when DC circuit breaker contact cut-offs, the arc-blowing device of direct-current circuit breaker that operational reliability is high.
The moving contact that arc-blowing device of direct-current circuit breaker of the present invention includes fixing fixed contact and closes by swing and moving contact or disconnect; Described moving contact is provided with an auxiliary moving contact, auxiliary moving contact is hinged on moving contact, assist and be provided with the spring that auxiliary moving contact can be made to swing to closing direction between moving contact and moving contact matrix, auxiliary also conduction by being flexible coupling between moving contact with moving contact is connected; Auxiliary moving contact offside is provided with one can contact the fixing auxiliary fixed contact coordinated with auxiliary moving contact, auxiliary fixed contact is connected with fixed contact through one section of coil, described coil is around on an iron core, the two ends of iron core are respectively connected with one section and draw magnetic arm, and two sections are drawn magnetic arm and extend to the both sides that auxiliary moving contact and auxiliary fixed contact disconnect opening respectively; Spring force between described auxiliary moving contact and moving contact can make contact between auxiliary moving contact and auxiliary fixed contact early than the contact between moving contact and fixed contact when DC circuit breaker closes a floodgate, and the disjunction between auxiliary moving contact and auxiliary fixed contact can be made to be later than disjunction between moving contact and fixed contact when DC circuit breaker separating brake.
Also arc extinguishing grid pieces is provided with drawing magnetic arm on the electromagnetic action force direction of electric arc.
The present invention normally divides at moving contact and fixed contact, close while, by the unique texture of auxiliary moving contact and auxiliary stationary contact, arc blow-out loop is formed when drop-out current, electric current self is utilized to form magnetic field, and by increasing magnetic structure, magnetic field is strengthened, and act between contact of breaker, make the electric arc between contact under the effect of externally-applied magnetic field, can be blown off contact fast, reaches the effect of fast arc extinction; By arc extinguishing grid pieces, can subdividing the arc further, strengthen arc quenching effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the perspective view of the embodiment of the present invention.
Embodiment
As shown in the figure, this arc-blowing device of direct-current circuit breaker moving contact 2 of including fixing fixed contact 1 and closing by swing and moving contact or disconnect; Moving contact 2 is provided with an auxiliary moving contact 3, auxiliary moving contact is hinged on moving contact 2, assist and be provided with the spring 4 that auxiliary moving contact 3 can be made to swing to closing direction between moving contact 3 and the matrix of moving contact 2, auxiliary also conduction by being flexible coupling between moving contact 3 with moving contact 2 is connected; The offside of auxiliary moving contact 3 is provided with one and can contacts the fixing auxiliary fixed contact 5 coordinated with auxiliary moving contact, auxiliary fixed contact 5 is connected with fixed contact 1 through one section of coil 6, coil 6 is around on an iron core 7, the two ends of iron core are respectively connected with one section and draw magnetic arm 8, and two sections are drawn magnetic arm 8 and extend to the both sides that auxiliary moving contact and auxiliary fixed contact disconnect opening respectively; Auxiliary spring force between moving contact 3 and moving contact 2 can make contact between auxiliary moving contact 3 and auxiliary fixed contact 5 early than the contact between moving contact 2 and fixed contact 1 when DC circuit breaker closes a floodgate, and the disjunction between auxiliary moving contact 3 and auxiliary fixed contact 5 can be made to be later than disjunction between moving contact 2 and fixed contact 1 when DC circuit breaker separating brake.The electromagnetic action force direction drawing magnetic arm 8 pairs of electric arcs is also provided with arc extinguishing grid pieces 9.
Operation principle of the present invention is as follows: when circuit breaker is in "on" position, and electric current mainly flows through between moving contact 2 and fixed contact 1; During disjunction, due to auxiliary moving contact and auxiliary fixed contact disjunction slower, therefore electric arc results between auxiliary moving contact 3 and auxiliary fixed contact 5, this arc current flows through blow-out coil 6, thus produces arc blow-out magnetic field, by drawing magnetic arm 8, arc blow-out magnetic field is added in electric arc vertical direction, thus 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. an arc-blowing device of direct-current circuit breaker, the moving contact (2) including fixing fixed contact (1) and can be closed by swing and fixed contact or disconnect; It is characterized in that: moving contact (2) is provided with an auxiliary moving contact (3), auxiliary moving contact is hinged on moving contact (2), assist and be provided with the spring (4) that auxiliary moving contact (3) can be made to swing to closing direction between moving contact (3) and the matrix of moving contact (2), auxiliary also conduction by being flexible coupling between moving contact (3) with moving contact (2) is connected; The offside of auxiliary moving contact (3) is provided with one and can contacts the fixing auxiliary fixed contact (5) coordinated with auxiliary moving contact, auxiliary fixed contact (5) is connected with fixed contact (1) through one section of coil (6), coil (6) is around on an iron core (7), the two ends of iron core are respectively connected with one section and draw magnetic arm (8), and two sections are drawn magnetic arm (8) and extend to the both sides that auxiliary moving contact and auxiliary fixed contact disconnect opening respectively; Auxiliary spring force between moving contact (3) and moving contact (2) can make contact between auxiliary moving contact (3) and auxiliary fixed contact (5) early than the contact between moving contact (2) and fixed contact (1) when DC circuit breaker closes a floodgate, and the disjunction between auxiliary moving contact (3) and auxiliary fixed contact (5) can be made to be later than disjunction between moving contact (2) and fixed contact (1) when DC circuit breaker separating brake.
2. arc-blowing device of direct-current circuit breaker according to claim 1, is characterized in that: be also provided with arc extinguishing grid pieces (9) on the electromagnetic action force direction of electric arc drawing magnetic arm (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419983.3A CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419983.3A CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102915894A CN102915894A (en) | 2013-02-06 |
| CN102915894B true CN102915894B (en) | 2015-10-28 |
Family
ID=47614218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210419983.3A Active CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102915894B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584321B (en) * | 2019-05-21 | 2022-06-10 | 杭州德睿达电气有限公司 | Magnetic quenching system of direct-current quick circuit breaker |
| CN111584293B (en) * | 2019-05-21 | 2022-06-10 | 杭州德睿达电气有限公司 | Contact system of direct current quick circuit breaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105714A (en) * | 1985-07-20 | 1987-02-11 | Y·S·保安有限公司 | Circuit-breaker |
| CN86204642U (en) * | 1986-09-17 | 1987-06-24 | 上海立新电器厂 | Direct-current magnetic field circuit breaker |
| CN1238540A (en) * | 1998-05-07 | 1999-12-15 | 尹顿公司 | Electrical switching apparatus having arc runner integral with stationary arcing contact |
| CN102412078A (en) * | 2010-09-20 | 2012-04-11 | 赛雪龙公司 | Electromechanical circuit breaker |
| CN102592908A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
| CN202871727U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Arc blow-out apparatus of direct-current breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08250010A (en) * | 1995-03-13 | 1996-09-27 | Fuji Electric Co Ltd | Air circuit breaker |
-
2012
- 2012-10-29 CN CN201210419983.3A patent/CN102915894B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105714A (en) * | 1985-07-20 | 1987-02-11 | Y·S·保安有限公司 | Circuit-breaker |
| CN86204642U (en) * | 1986-09-17 | 1987-06-24 | 上海立新电器厂 | Direct-current magnetic field circuit breaker |
| CN1238540A (en) * | 1998-05-07 | 1999-12-15 | 尹顿公司 | Electrical switching apparatus having arc runner integral with stationary arcing contact |
| CN102412078A (en) * | 2010-09-20 | 2012-04-11 | 赛雪龙公司 | Electromechanical circuit breaker |
| CN102592908A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
| CN202871727U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Arc blow-out apparatus of direct-current breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102915894A (en) | 2013-02-06 |
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| C10 | Entry into substantive examination | ||
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Effective date of registration: 20160126 Address after: 212211 Jiangsu city of Yangzhong province science and Technology Park Road Xinba Daquan No. 11 Patentee after: Jiangsu Daqo Kfine Electric Co., Ltd. Address before: 212211 Jiangsu city of Zhenjiang province Yangzhong city new town of New South Road, No. 66 Patentee before: Daquan Group Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee after: JIANGSU DAQO KFINE ELECTRIC Co.,Ltd. Address before: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee before: JIANGSU DAQO KAIFAN ELECTRICAL APPLIANCE Co.,Ltd. |