CN201773779U - Breaker with arc blocking device - Google Patents
Breaker with arc blocking device Download PDFInfo
- Publication number
- CN201773779U CN201773779U CN 201020265861 CN201020265861U CN201773779U CN 201773779 U CN201773779 U CN 201773779U CN 201020265861 CN201020265861 CN 201020265861 CN 201020265861 U CN201020265861 U CN 201020265861U CN 201773779 U CN201773779 U CN 201773779U
- Authority
- CN
- China
- Prior art keywords
- arc
- breaker
- insulating apparatus
- control device
- circuit breaker
- 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
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Abstract
The utility model relates to a breaker with an arc blocking device. The breaker comprises a breaker body and a secondary terminal block, wherein the top end of the breaker body is installed with an arc extinguish chamber; an end shield is installed above the arc extinguish chamber; the position of the upper part of the breaker body, positioned at the front end of the arc extinguish chamber, is provided with an arc blocking device which can seal the end shield, and the arc blocking device separates the arc extinguish chamber and the interior of the front end of the breaker body; or the secondary terminal block is provided with the arc blocking device which can seal the end shield, and the arc blocking device separates the arc extinguish chamber and the secondary terminal block. For the breaker, the arc blocking device separates the arc extinguish chamber at the top end of the body from the operation and control parts in the body, thus protecting the operation and control components in the body, enhancing the insulating property of the breaker, protecting the personal safety of the operator and prolonging the service life of the breaker.
Description
Technical field
The utility model relates to a kind of circuit breaker with arc insulating apparatus, belongs to the low-pressure electronic equipment product field.
Background technology
Can produce electric arc during the circuit breaker disjunction.Electric arc is the charged free gas of a kind of high temperature, and the high heat that produces during the circuit breaker disjunction makes in the contact cavities and forms higher draught head with the external world, and intracavity gas outwards sprays along the slit, contains electric arc in the gas of injection, promptly so-called arcing.
Top at breaker body is equipped with arc control device, and arc control device contain many narrow slits, serves as the outwards passage of discharging of contact intracavity gas, contains electric arc in the emission gases.Arc control device tops has end shield to be used for preventing that arcing from spraying to preceding, the left and right sides and the upper end of circuit breaker, and the end shield space is relatively large, and the design certain structure.In general; desirable structural design should reach: the electric arc that circuit breaker produces is all introduced in the extinguishing arc structure of arc extinguishing indoor design and is made its elimination; the gas of only remaining high temperature, high pressure enters in the end shield of arc control device upper end by arc control device; by the guide structure that designs in the end shield this part gas is discharged safely again; control section, the operation part that realizes isostasy and protective circuit breaker at last avoided damaging, protection operator personal safety.Particularly for withdrawable circuit breaker, above-mentioned end shield is installed on the drawer, arc control device are installed on the body of circuit breaker, body and drawer can be realized the split operation, this also is the place that withdrawable circuit breaker is better than fixed circuit breaker, but during the withdrawable circuit breaker operate as normal, body is in drawout chassis inside, this also just needs between end shield and the arc control device is movable, this just brings another problem: promptly unavoidably leave certain interval between end shield and arc control device, be unlikely to interfere when making things convenient for breaker body to enter drawout chassis, like this, the electric arc that when the circuit breaker disjunction, produces, be that charged particle may spray from this gap through remaining gas behind the arc control device, when particularly circuit breaker carries out disjunction than the major break down electric current, can produce very huge breaking arc, at this time, arc control device often can not effectively eliminate charged particles whole in the electric arc, just might be to be connected with the electric conductor of circuit breaker inside and charged by the gas behind the arc control device like this, because air pressure is very huge, these charged particles just might be not merely discharged in the guide structure in the end shield that designs, also can discharge from above-mentioned arc control device and the gap between the end shield, be injected in around the breaker body, on the secondary terminal, control section, on the operating means, even on the grounding system around the circuit breaker, cause very serious ground fault, phase fault accident etc., these hot gases may cause that also the fusing of part parts damages, cause the loss of equipment, the serious personal injury that more can cause to operating personnel.Be not only withdrawable circuit breaker, fixed circuit breaker also exists identical problem: end shield is arranged at the arc-extinguishing chamber of circuit breaker upper end by installation, also causes arc control device and end shield top to leave the gap.Thereby has a same problem of withdrawable circuit breaker.
The utility model content
The purpose of this utility model provides a kind of circuit breaker with arc insulating apparatus, and it has protective circuit breaker body interior device function.
The utility model is by the following technical solutions for this reason:
A kind of circuit breaker with arc insulating apparatus, comprise breaker body and secondary connection terminal, the top of breaker body is equipped with arc control device, end shield is installed in the arc control device top, it is characterized in that: be positioned at the arc insulating apparatus that arc control device front end place is provided with salable end shield on the top of described breaker body, this arc insulating apparatus is with the internal insulation of arc control device and breaker body front end.
Described arc insulating apparatus is a baffle plate.The top clamping of this baffle plate and breaker body or be made into integration with the pedestal of breaker body.
A kind of circuit breaker with arc insulating apparatus, comprise breaker body and secondary connection terminal, the top of breaker body is equipped with arc control device, end shield is installed in the arc control device top, it is characterized in that: be provided with the arc insulating apparatus of salable end shield on described secondary connection terminal, this arc insulating apparatus is isolated arc control device and secondary connection terminal.
Described arc insulating apparatus is a baffle plate.The shell clamping of this baffle plate and secondary connection terminal or be made into integration with the shell of secondary connection terminal.
The beneficial effects of the utility model are:
The utility model has been realized the isolation of breaker body top arc control device and inner each components and parts of breaker body and circuit breaker front end surrounding environment, when circuit breaker carries out breaking operation, the utility model can effectively stop remaining high temperature and high pressure gas or charged particle injection to enter breaker body inside, prevents that it from producing harmful effect and other damage or danger to inner each components and parts.
Description of drawings
Fig. 1 is an arc insulating apparatus schematic diagram of the present utility model;
Fig. 2 is the position view of arc insulating apparatus of the present utility model in circuit breaker;
Fig. 3 is the view of the formation sealing of arc insulating apparatus of the present utility model in circuit breaker;
Fig. 4 is arc insulating apparatus of the present utility model scheme of installation on the body in circuit breaker;
Fig. 5 does not have the schematic diagram that electric arc in the breaker body of arc insulating apparatus enters the body front end;
Fig. 6 does not have the enlarged diagram that electric arc in the breaker body of arc insulating apparatus enters the body front end;
Fig. 7 is the enlarged diagram with breaker body of arc insulating apparatus.
Embodiment
The utility model is a kind of circuit breaker with arc insulating apparatus, comprise breaker body and secondary connection terminal, the top of breaker body is equipped with arc control device, end shield is installed in the arc control device top, be positioned at the arc insulating apparatus that arc control device front end place is provided with salable end shield on the top of breaker body, this arc insulating apparatus is with the internal insulation of arc control device and breaker body front end.Described arc insulating apparatus is a baffle plate.The top clamping of this baffle plate and breaker body or be made into integration with the pedestal of breaker body.
The utility model also can be provided with the arc insulating apparatus of salable end shield on the secondary connection terminal, this arc insulating apparatus is isolated arc control device and secondary connection terminal.The shell clamping of this arc insulating apparatus and secondary connection terminal or be made into integration with the shell of secondary connection terminal.
Below in conjunction with accompanying drawing the utility model is further described below.
As shown in Figure 5, there is contact system breaker body 3 inside in the utility model, and effect is the circuit that forms closure or disjunction.The top of contact system is arc control device 2, and arc control device 2 are installed in the top of breaker body 3, and the effect of arc control device 2 is exactly to extinguish contact system because the electric arc that the branch deenergizing produces.In the upper end of arc control device 2 end shield 5 is arranged, the structure of end shield 5 is corresponding with arc control device 2, and effect is water conservancy diversion, lead arc.
At withdrawable circuit breaker, end shield 5 is installed on the drawout chassis, and breaker body 3 is can slide into to skid off in drawout chassis.So, end shield 5 is gapped with the arc control device 2 on breaker body 3 tops, the electric arc of the enough arc control device of this gap 2 ejections enter breaker body 3 inside and breaker body 3 anterior with case 7 between components and parts in, thereby breaker body 3 function and performances inner and anterior parts are caused adverse effect.
At fixed circuit breaker, end shield 5 is installed on the support at breaker body 3 two ends, but end shield 5 has the gap equally with the arc control device 2 on breaker body 3 tops, and then, can enter equally the components and parts of breaker body 3 inner components or front portion from the electric arc of arc control device 2 ejections, cause negative consequence.
As shown in Figure 7, in an embodiment of the present utility model, arc insulating apparatus 1 is installed on the support 6 of contact frame 4, arc insulating apparatus 1 forms the hermetically-sealed construction that cooperates with the end shield 5 of arc control device 2 upper ends, enter the components and parts of breaker body 3 inner components and front portion, thereby intercept as annex 8, operating mechanism 9, electrically operated institution 10 or the like from the arcing of arc control device 2 ejections.The existence of this arc insulating apparatus 1 has effectively been protected each parts and the anterior components and parts of breaker body 3 inside, thereby has been greatly reduced arcing to circuit breaker allomeric function and Effect on Performance.
This arc insulating apparatus 1 also can be made into integration with the pedestal 14 of breaker body 3, and arc insulating apparatus 1 as shown in Figure 4 is the bulge-structure at breaker body 3 pedestals 14 tops.
In other embodiment of the present utility model, different with the foregoing description is that this arc insulating apparatus is arranged on the shell of secondary connection terminal, in order to the sealing arc control device arc control device and secondary connection terminal is isolated.The shell clamping of this arc insulating apparatus and secondary connection terminal or be made into integration with the shell of secondary connection terminal.
Claims (8)
1. the circuit breaker with arc insulating apparatus comprises breaker body and secondary connection terminal, and the top of breaker body is equipped with arc control device, and end shield is installed in the arc control device top, it is characterized in that:
Be positioned at the arc insulating apparatus that arc control device front end place is provided with salable end shield on the top of described breaker body, this arc insulating apparatus is with the internal insulation of arc control device and breaker body front end.
2. the circuit breaker with arc insulating apparatus as claimed in claim 1 is characterized in that:
Described arc insulating apparatus is a baffle plate.
3. the circuit breaker with arc insulating apparatus as claimed in claim 2 is characterized in that:
The lower end of described baffle plate has the elasticity card, the top clamping of baffle plate and breaker body.
4. the circuit breaker with arc insulating apparatus as claimed in claim 2 is characterized in that:
The pedestal of described baffle plate and breaker body is made into integration.
5. the circuit breaker with arc insulating apparatus comprises breaker body and secondary connection terminal, and the top of breaker body is equipped with arc control device, and end shield is installed in the arc control device top, it is characterized in that:
Be provided with the arc insulating apparatus of salable end shield on described secondary connection terminal, this arc insulating apparatus is isolated arc control device and secondary connection terminal.
6. the circuit breaker with arc insulating apparatus as claimed in claim 5 is characterized in that:
Described arc insulating apparatus is a baffle plate.
7. the circuit breaker with arc insulating apparatus as claimed in claim 5 is characterized in that:
The shell clamping of described baffle plate and secondary connection terminal.
8. the circuit breaker with arc insulating apparatus as claimed in claim 5 is characterized in that:
The shell of described baffle plate and secondary connection terminal is made into integration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020265861 CN201773779U (en) | 2010-07-15 | 2010-07-15 | Breaker with arc blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020265861 CN201773779U (en) | 2010-07-15 | 2010-07-15 | Breaker with arc blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773779U true CN201773779U (en) | 2011-03-23 |
Family
ID=43753623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020265861 Expired - Lifetime CN201773779U (en) | 2010-07-15 | 2010-07-15 | Breaker with arc blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339689A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | Circuit breaker having arc insulating apparatus |
-
2010
- 2010-07-15 CN CN 201020265861 patent/CN201773779U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339689A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | Circuit breaker having arc insulating apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |