CN204391024U - A kind of arc control device being applied to miniature circuit breaker - Google Patents
A kind of arc control device being applied to miniature circuit breaker Download PDFInfo
- Publication number
- CN204391024U CN204391024U CN201520102420.0U CN201520102420U CN204391024U CN 204391024 U CN204391024 U CN 204391024U CN 201520102420 U CN201520102420 U CN 201520102420U CN 204391024 U CN204391024 U CN 204391024U
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- control device
- arc
- arc control
- magnetic blow
- support
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Abstract
The utility model provides a kind of arc control device being applied to miniature circuit breaker, comprises arc extinguishing grid pieces, support, pedestal, moving contact, fixed contact, magnetic blow-out I, magnetic blow-out II, arc control device.Arc control device are arranged on bottom circuit breaker, and arc control device and magnetic blow-out I, magnetic blow-out II offset, and magnetic blow-out I and fixed contact offset; Magnetic blow-out II and moving contact offset; Arc control device are fixed on pedestal; Arc control device are made up of support and arc extinguishing grid pieces; Arc extinguishing grid pieces is staggered on support, and arc extinguishing grid pieces both sides are provided with projection, and projection is stuck on support and rivets; There is the hole of regular array in arc control device one side; Support can be made the material of aerogenesis by being heated.The beneficial effects of the utility model are: common compact circuit breaker is installed high arc extinction performance arc control device, significantly can improve breaking capacity, and have that structure is simple, low cost and other advantages.
Description
Technical field
The utility model relates to a kind of arc control device, particularly a kind of arc control device being applied to miniature circuit breaker.
Background technology
Short circuit causes the topmost reason of electric power distribution network fault, and along with the continuous increase of net capacity, the loss that short circuit causes is also increasing.The cutting-off of short-circuit electric current of fast and reliable is the key reducing loss.Maximum place that is short-circuited at present is the terminal of distribution system, and it is important that the lifting as the protected location-miniature circuit breaker breaking capacity of terminal seems very.
Utility model content
In order to improve the breaking capacity of miniature circuit breaker, a kind of arc control device be applied on miniature circuit breaker of the present utility model, substitute original old-fashioned arc control device.Have that structure is simple, arc extinguishing efficiency high, circuit breaker breaking capacity can be heightened greatly, ensure electrical network reliably working.
The technical solution adopted for the present invention to solve the technical problems is:
Be applied to arc control device for miniature circuit breaker, comprise arc extinguishing grid pieces, support, pedestal, moving contact, fixed contact, magnetic blow-out I, magnetic blow-out II, arc control device.Arc control device are arranged on bottom circuit breaker, and arc control device and magnetic blow-out I, magnetic blow-out II offset, and magnetic blow-out I and fixed contact offset; Magnetic blow-out II and moving contact offset; Arc control device are fixed on pedestal; Arc control device are made up of support and arc extinguishing grid pieces; Arc extinguishing grid pieces is staggered on support, and arc extinguishing grid pieces both sides are provided with projection, and projection is stuck on support and rivets; There is the hole of regular array in arc control device one side; Support can be made the material of aerogenesis by being heated.
The invention has the beneficial effects as follows: common compact circuit breaker is installed high arc extinction performance arc control device, significantly can improve breaking capacity, and have that structure is simple, low cost and other advantages.
Accompanying drawing explanation
According to embodiment and accompanying drawing, the utility model is described in further detail below.
Fig. 1 arc quenching chamber structure figure of the present utility model;
Fig. 2 arc control device side-looking of the present utility model structure chart;
Fig. 3 arc chute chip architecture figure of the present utility model;
Fig. 4 arc extinguishing grid pieces mounting structure of the present utility model figure;
Fig. 5 arc control device of the present utility model are arranged on the structure chart in circuit breaker;
Reference numeral:
1. arc extinguishing grid pieces, 2. support, 3. pedestal, 4. moving contact,
5. fixed contact, 6. magnetic blow-out I, 7. magnetic blow-out II, 8. arc control device
Embodiment
Please refer to shown in Fig. 1-4: a kind of arc control device being applied to miniature circuit breaker described in the utility model, comprise arc extinguishing grid pieces 1, support 2, pedestal 3, moving contact 4, fixed contact 5, magnetic blow-out I6, magnetic blow-out II7, arc control device 8.Arc control device 8 are arranged on bottom circuit breaker, and arc control device 8 and magnetic blow-out I6, magnetic blow-out II7 offset, and magnetic blow-out I6 and fixed contact 5 offset; Magnetic blow-out II7 and moving contact 4 offset; Arc control device 8 are fixed on pedestal 6; Arc control device 8 are made up of support 2 and arc extinguishing grid pieces 1; Arc extinguishing grid pieces 1 is staggered on support 2, and arc extinguishing grid pieces 1 both sides are provided with projection, and projection is stuck on support 2 and rivets; There is the hole of regular array in arc control device 8 one side; Support 2 can be made the material of aerogenesis by being heated.
The course of work is as follows:
In Fig. 5, when circuit breaker leads to small area analysis, moving contact 3 and fixed contact 4 are by mechanism's spring force close contact.When short circuit current is by circuit breaker, upwards open under moving contact 3 Lorentz force and Huo Muli acting in conjunction, the breakdown generation electric arc of air of moving contact and fixed contact centre simultaneously, electric arc enters arc control device 8 under magnetic blow-out I6 and magnetic blow-out II7 effect, because arc control device 8 have employed staggered narrow slit structure, greatly reduce the resistance that electric arc enters arc control device.Electric arc progressively by arc extinguishing grid pieces segmentation energy multistage, makes arc voltage increase.Arc extinguishing indoor temperature increase simultaneously makes support 2 gasify, and reduces arc temperature, and a large amount of gas produces and promoted the motion of electric arc.Arc control device 8 aperture is behind staggered avoids restriking of electric arc., along with moving contact opens electric arc, to elongate arc temperature drop low, and the voltage of pilot arc burning is more and more higher, when pilot arc required voltage is greater than external voltage time, and arc extinction.
Embodiment recited above is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the utility model designs spiritual prerequisite; any amendment that the common engineers and technicians in this area make technical solutions of the utility model, equivalent replacement, improvement etc., all should fall in protection range that claims of the present utility model determine.
Claims (1)
1. one kind is applied to the arc control device of miniature circuit breaker, comprise arc extinguishing grid pieces (1), support (2), pedestal (3), moving contact (4), fixed contact (5), magnetic blow-out I (6), magnetic blow-out II (7), arc control device (8), it is characterized in that: arc control device (8) are arranged on bottom circuit breaker, arc control device (8) and magnetic blow-out I (6), magnetic blow-out II (7) offset, and magnetic blow-out I (6) and fixed contact (5) offset; Magnetic blow-out II (7) and moving contact (4) offset; Arc control device (8) are fixed on pedestal (3); Arc control device (8) are made up of support (2) and arc extinguishing grid pieces (1); Arc extinguishing grid pieces (1) is staggered on support (2), and arc extinguishing grid pieces (1) both sides are provided with projection, and projection is stuck in the upper riveted joint of support (2); There is the hole of regular array in arc control device (8) one side; Support (2) can be made the material of aerogenesis by being heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102420.0U CN204391024U (en) | 2015-02-10 | 2015-02-10 | A kind of arc control device being applied to miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102420.0U CN204391024U (en) | 2015-02-10 | 2015-02-10 | A kind of arc control device being applied to miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391024U true CN204391024U (en) | 2015-06-10 |
Family
ID=53363721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102420.0U Active CN204391024U (en) | 2015-02-10 | 2015-02-10 | A kind of arc control device being applied to miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391024U (en) |
-
2015
- 2015-02-10 CN CN201520102420.0U patent/CN204391024U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |