CN102760595A - Arc extinguishing chamber with high arc-extinguishing performance - Google Patents
Arc extinguishing chamber with high arc-extinguishing performance Download PDFInfo
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- CN102760595A CN102760595A CN2011101077295A CN201110107729A CN102760595A CN 102760595 A CN102760595 A CN 102760595A CN 2011101077295 A CN2011101077295 A CN 2011101077295A CN 201110107729 A CN201110107729 A CN 201110107729A CN 102760595 A CN102760595 A CN 102760595A
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Abstract
The invention discloses an arc extinguishing chamber with high arc-extinguishing performance, which is applied to a mounded case circuit breaker and has the characteristics of novel and simple structure, low cost and capabilities of greatly increasing the breaking capacity of the circuit breaker and ensuring reliable operation of a power grid. The arc extinguishing chamber with high arc-extinguishing performance comprises two inner side plates, two outer side plates, arc-extinguishing plates, baffle plates, upper arc striking plates and a semi-enclosed cavity consisting of the inner side plates, the outer side plates, the baffle plates and the upper arc-striking plates; and misaligned narrow gaps are reserved between the upper and lower adjacent arc-extinguishing plates, the narrow gaps are arranged in the semi-enclosed cavity in a left-right staggered parallel manner to form a moving-contact movable space, a fixed contact is positioned at the bottom of each arc-extinguishing plate, and the upper arc striking plates are positioned above the arc extinguishing chamber.
Description
Technical field
Patent of the present invention relates to breaker technical field, is specially a kind of high arc extinction performance arc control device, especially is useful in the low-pressure plastic shell circuit breaker.
Background technology
Along with the construction of system of State Grid, net capacity constantly increases, and grid short circuit harmfulness is also increasing.The short circuit meeting causes a large amount of power consumption equipment scaling loss and large-area power-cuts, brings tremendous loss for country and individual.Rapid and reliable cutting-off of short-circuit electric current is the key that reduces loss, and this has higher requirement to the breaker of plastic casing that low-voltage circuit breaker particularly has a large capacity and a wide range.In order to improve system's operational reliability, circuit breaker generally all require limit breaking current (
ICu) equal to move breaking capacity (
ICs), but disjunction is that arc energy also increases rapidly when short circuit current increases, and the breaking capacity of existing circuit breaker can not satisfy the needs of power grid security gradually.
The low-pressure plastic shell circuit breaker contact system is divided into double-breakpoint contact system and single breakpoint contact system at present, and double-breakpoint contact system has very high breaking capacity, but processed complex cost height and contact balance are poor; Single breakpoint contact system is to adopt now the widest breaking technology, and it is relatively lower but breaking capacity is not high to process fairly simple cost.The existing needs developed a kind of being applied on the breaker of plastic casing, can improve the circuit breaker breaking capacity greatly, satisfies the safety requirements of electrical network.
Summary of the invention
The technical problem that the present invention will solve provides a kind of high arc extinction performance arc control device, is applied on the breaker of plastic casing, and it has brand-new structure, have simple in structure, cost is low, can improve the circuit breaker breaking capacity greatly, guarantees the characteristics of electrical network reliably working.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
High arc extinction performance arc control device comprise two interior plates, two outer panels, arc quenching plate and baffle plates, and last striking sheet, and interior plate, outer panel and baffle plate and last striking sheet constitute a semi-enclosed cavity; Have the narrow slit that does not overlap in the middle of the neighbouring arc quenching plate, staggered being arranged in parallel within the semi-enclosed cavity forms the moving contact activity space about narrow slit, and fixed contact is positioned at the bottom of arc quenching plate, and last striking sheet is positioned at the arc control device top.
Baffle plate is fixed in the middle of two outer panels, covers the arc quenching plate in the semi-enclosed cavity, and its underpart offers and becomes moving contact activity space corresponding opening.
Interior plate is an exotic material, is fixed in the middle of outer panel and the arc quenching plate.
Said arc quenching plate is adjacent go up striking sheet one end be higher than for the first end of movable contact, form and have one and arrange obliquely, form the exhaust passage between the neighbouring arc quenching plate.
Interior plate forms for Nuo Mikesi materials processing.
The good effect of the high arc extinction performance arc control device of the present invention is: adjacent arc quenching plate has the narrow slit shape facility that does not overlap, and does under the effect the collaborative of last striking sheet, can interlock and cut apart elongation electric arc, and realizing wanting pilot arc to burn need bigger voltage.When the requirement less than arc burning of the voltage of pilot arc, then electric arc extinguishes rapidly; The oblique arrangement that arc quenching plate is set forms the exhaust passage, and in the time of arc burning, this paper of the many Micks in the arc control device decomposes gasification and produces a large amount of gases; Reduced the arc extinguishing indoor temperature, gas is discharged arc control device with the mode of convection current simultaneously, and then; Gaseous exchange helps electric arc and blows to arc control device; Strengthened also that arc quenching plate is staggered cuts apart the effect of elongating electric arc, this higher heat resistance of many Micks has guaranteed the reliability and the useful life of entire product.The high arc extinction performance arc control device of the present invention significantly improve breaking capacity, feasible operation short circuit breaking current (
ICs) equal limit short circuit breaking capacity (
ICu), satisfy the needs of electrical network to the circuit breaker high breaking capacity.
Description of drawings:
Fig. 1, the high arc extinction performance arc control device of the present invention outline drawing;
The arc quenching plate structural representation of Fig. 2, the high arc extinction performance arc control device of the present invention;
Fig. 3, the inner package assembly sketch map of the high arc extinction performance arc control device of the present invention;
Fig. 4, the high arc extinction performance arc control device of the present invention working state schematic representation.
Among the figure: 1. go up run-on tab 2. baffle plates 3. arc quenching plates 4. interior plates 5. outer panels 6. moving contacts 7. fixed contacts.
Embodiment:
Like Fig. 1, Fig. 2, meaning shown in Figure 3, the high arc extinction performance arc control device of the present invention comprise two interior plates 4, two outer panels 5, arc quenching plate 3 and baffle plates 2, and go up striking sheet 1, interior plate 4, outer panel 5 and baffle plate 2 and go up striking sheet 1 and constitute a semi-enclosed cavity; Have the narrow slit that does not overlap in the middle of the neighbouring arc quenching plate 3, staggered being arranged in parallel within the semi-enclosed cavity forms moving contact 6 activity spaces about narrow slit, and fixed contact 7 is positioned at the bottom of arc quenching plate 3, and last striking sheet 1 is positioned at the arc control device top.Baffle plate 2 is fixed in the middle of two outer panels 5, covers the arc quenching plate 3 in the semi-enclosed cavity, and its underpart offers and becomes moving contact 6 activity space corresponding opening.Interior plate 4 is these paper of many Micks, is fixed in the middle of outer panel 5 and the arc quenching plate 3.Said arc quenching plate 3 is adjacent go up striking sheet 1 one ends be higher than for moving contact 6 one ends, form and have one and arrange obliquely, form the exhaust passage between the neighbouring arc quenching plate 3.
State under rated current or the little overload current situation, moving contact 6 closely contacts through mechanism's spring force with fixed contact 7.It in Fig. 4 short circuit current state when passing through circuit breaker; Upwards open under moving contact 6 Lorentz forces and the Huo Muli acting in conjunction; The breakdown generation electric arc of air in the middle of while moving contact and the fixed contact, electric arc produces huge heat ambient air, and this moment, the arc control device inner air pressure was very big; Because space of planes behind baffle plate 2 and the Shell of circuit breaker sealing moving contact; Gas can not blow to circuit breaker inside, can only blow out circuit breaker through forming the exhaust passage between the neighbouring arc quenching plate 3, and this process air-flow drives electric arc and gets into arc control device.The staggered narrow slit of arc quenching plate about 3 is subdividing the arc gradually, along with moving contact is opened electric arc and is elongated, the pilot arc burning require voltage increasingly high, when pilot arc required voltage the time greater than external voltage, arc extinction.
Claims (5)
1. high arc extinction performance arc control device; Comprise two interior plates (4), two outer panels (5), arc quenching plate (3) and baffle plate (2); And last striking sheet (1), it is characterized in that: interior plate (4), outer panel (5) and baffle plate (2) and last striking sheet (1) constitute a semi-enclosed cavity; Has the narrow slit that does not overlap in the middle of the neighbouring arc quenching plate (3); Staggered being arranged in parallel within the semi-enclosed cavity about narrow slit; Form moving contact (6) activity space, fixed contact (7) is positioned at the bottom of arc quenching plate (3), and last striking sheet (1) is positioned at the arc control device top.
2. high arc extinction performance arc control device according to claim 1; It is characterized in that: baffle plate (2) is fixed in the middle of two outer panels (5); Cover the arc quenching plate (3) in the semi-enclosed cavity, its underpart offers and becomes moving contact (6) activity space corresponding opening.
3. high arc extinction performance arc control device according to claim 1 and 2 is characterized in that: interior plate (4) is this paper of many Micks, is fixed in the middle of outer panel (5) and the arc quenching plate (3).
4. high arc extinction performance arc control device according to claim 1 and 2; It is characterized in that: said arc quenching plate (3) is adjacent go up striking sheet (1) one end be higher than for moving contact (6) one ends; Formation has one arranges obliquely, and neighbouring arc quenching plate forms the exhaust passage between (3).
5. high arc extinction performance arc control device according to claim 3; It is characterized in that: said arc quenching plate (3) is adjacent go up striking sheet (1) one end be higher than for moving contact (6) one ends; Formation has one arranges obliquely, and neighbouring arc quenching plate forms the exhaust passage between (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101077295A CN102760595A (en) | 2011-04-28 | 2011-04-28 | Arc extinguishing chamber with high arc-extinguishing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101077295A CN102760595A (en) | 2011-04-28 | 2011-04-28 | Arc extinguishing chamber with high arc-extinguishing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102760595A true CN102760595A (en) | 2012-10-31 |
Family
ID=47055013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101077295A Pending CN102760595A (en) | 2011-04-28 | 2011-04-28 | Arc extinguishing chamber with high arc-extinguishing performance |
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| Country | Link |
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| CN (1) | CN102760595A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479620Y (en) * | 2001-06-01 | 2002-02-27 | 南寅 | Breaker arc-extinguishing chamber with insulating baffle plate |
| CN2586244Y (en) * | 2002-08-29 | 2003-11-12 | 浙江德力西电器股份有限公司 | Zero flashover arc deflector of plastic hull breaker |
| CN201072714Y (en) * | 2007-07-06 | 2008-06-11 | 施耐德电器工业公司 | Arc extinguishing grid device |
| JP2010219033A (en) * | 2009-02-19 | 2010-09-30 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
| CN102005345A (en) * | 2010-11-11 | 2011-04-06 | 江苏辉能电气有限公司 | Arc extinguishing module of molded case low-voltage circuit breaker |
-
2011
- 2011-04-28 CN CN2011101077295A patent/CN102760595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479620Y (en) * | 2001-06-01 | 2002-02-27 | 南寅 | Breaker arc-extinguishing chamber with insulating baffle plate |
| CN2586244Y (en) * | 2002-08-29 | 2003-11-12 | 浙江德力西电器股份有限公司 | Zero flashover arc deflector of plastic hull breaker |
| CN201072714Y (en) * | 2007-07-06 | 2008-06-11 | 施耐德电器工业公司 | Arc extinguishing grid device |
| JP2010219033A (en) * | 2009-02-19 | 2010-09-30 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
| CN102005345A (en) * | 2010-11-11 | 2011-04-06 | 江苏辉能电气有限公司 | Arc extinguishing module of molded case low-voltage circuit breaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |