CN202423182U - Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure - Google Patents
Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure Download PDFInfo
- Publication number
- CN202423182U CN202423182U CN2011205114299U CN201120511429U CN202423182U CN 202423182 U CN202423182 U CN 202423182U CN 2011205114299 U CN2011205114299 U CN 2011205114299U CN 201120511429 U CN201120511429 U CN 201120511429U CN 202423182 U CN202423182 U CN 202423182U
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- CN
- China
- Prior art keywords
- circuit breaker
- control device
- cofferdam
- low
- voltage circuit
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- 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 discloses a low-voltage circuit breaker with a sealed arc extinguishing chamber mounting structure. An elastic insulated gasket ring is arranged between an insulated casing and an arc extinguishing chamber of the low-voltage circuit breaker; the insulated casing is provided with an opening cavity accommodating the arc extinguishing chamber, and a second cofferdam part is arranged at the periphery of the opening cavity; the arc extinguishing chamber is embedded in the opening cavity, and is also embedded in the elastic insulated gasket ring; a first end part of the elastic insulated gasket ring is contacted with a first cofferdam part located at the periphery of the arc extinguishing chamber in a sealed manner; and the second end part of the elastic insulated gasket ring is contacted with the second cofferdam part located at the periphery of the opening cavity in a sealed manner. According to the utility model, a gap between an insulated frame and the arc extinguishing chamber is filled, so as to enable all voltaic arcs in the circuit breaker to enter the arc extinguishing chamber instead of escaping from the gap.
Description
Technical field
The utility model relates to field of circuit breakers, is specifically related to a kind of low-voltage circuit breaker with sealing arc control device mounting structure.
Background technology
Arc control device are important composition parts of low-voltage circuit breaker, and the reasonability of its structural design has determined circuit breaker breaking capacity height to a great extent.
Shown in Figure 1 is a kind of common low-voltage circuit breaker and arc control device assembly structure thereof.This low-voltage circuit breaker mainly comprises insulation shell 1 and the arc control device 2 that are included in the insulation shell.The insulation shell 1 of circuit breaker is provided with the atrium 11 that is in communication with the outside in the top that is installed in the inner moving contact (dotted line position schematically illustrates among the figure) of circuit breaker; The end that arc control device 2 are provided with arc extinguishing grid pieces 21 stretches in the atrium 11, and the other end is fixed on the insulation shell 1.
In the said structure, first cofferdam, the 22 direct contact matching of insulation shell 1 and arc control device 2 belong to the rigidity coupling, can't accomplish that therefore circuit breaker inside and ambient atmosphere seal relatively.As everyone knows, when the big electric current of circuit breaker disjunction, in air dielectric, will produce electric arc.Electric arc is a kind of ionized gas of HTHP, and the circuit breaker internal pressure is risen.Under the inside and outside differential pressure effect, electric arc gets into arc extinguishing grid pieces 21 and is cut apart, cools off, extinguishes.Because there is fit clearance in first cofferdam 22 with insulation shell 1; Therefore a part of ionized gas in the arc control device 2 will under high pressure be leaked to the ambient atmosphere from the gap; Cause certain decline of arc control device 2 internal pressures, influence the effect of the quick disjunction fault current of circuit breaker.Simultaneously, the trend toward miniaturization of circuit breaker is constantly compressed each spaced apart, possibly cause converging the accident generation that causes phase fault in the external world because of the emergent gas of adjacent arc control device 2.
Summary of the invention
The utility model purpose provides a kind of low-voltage circuit breaker with sealing arc control device mounting structure, and this low-voltage circuit breaker has been filled gap between insulation shell and the arc control device, the circuit breaker internal arc is all got in the arc control device and does not overflow from the gap.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of low-voltage circuit breaker with sealing arc control device mounting structure, comprise insulation shell and arc control device, and said insulation shell is provided with the atrium that holds said arc control device; It is characterized in that: described arc control device periphery has first cofferdam; Have second cofferdam around the described atrium, described first cofferdam and the corresponding setting of described second cofferdam, described low-voltage circuit breaker also comprises elastic insulated packing ring; Described elastic insulated packing ring places between first cofferdam and second cofferdam, and contacts with the sealing of second cofferdam with first cofferdam.
Further improved technical scheme is following in the technique scheme:
In the such scheme, said elastic insulated packing ring is the square frame shape.
Because the technique scheme utilization, the utility model compared with prior art has advantage and effect:
The utlity model has the low-voltage circuit breaker of sealing arc control device mounting structure; The rigidity contact matching of the insulation shell of circuit breaker and arc control device is owing to the intervention of elastic insulated packing ring is converted into flexible the contact; Fit clearance is owing to the elasticity filling disappears; So just make the insulation shell seamless link of arc control device first cofferdam and circuit breaker; The electric arc that produces during breaking current is compelled all to be got in the inner metal gate sheet of arc control device and can't from original rigidity fit clearance, leak in the ambient atmosphere, avoids causing outside electric arc to converge short circuit accident.Simultaneously, the arc control device internal pressure can not shift thereby be beneficial to electric arc because of obviously decline of gas leakage fast yet.
Description of drawings
Accompanying drawing 2 is the arc control device sealing mounting structure figure of the utility model circuit breaker;
Accompanying drawing 3 is the structure chart of elastic insulated packing ring described in the accompanying drawing 2;
Accompanying drawing 4 is the structure chart of arc control device described in the accompanying drawing 2;
Accompanying drawing 5 includes the arc quenching chamber structure figure of elastic insulated packing ring for the utility model.
In the above accompanying drawing: 1. insulation shell, 11. atriums, 111. second cofferdams; 2. arc control device, 21. arc extinguishing grid pieces, 22. first cofferdams; 3. elastic insulated packing ring, 31. first ends, 32. the second ends.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment: a kind of low-voltage circuit breaker with sealing arc control device mounting structure is provided with elastic insulated packing ring 3 between the insulation shell 1 of low-voltage circuit breaker and arc control device 2; Elastic insulated packing ring 3 preferred rubber manufacturings are designed to the square frame shape.Arc control device 2 penetrate elastic insulated packing ring 3, and arc control device 2 peripheries are provided with first cofferdam 22 of square frame shape, cooperate with the first end 31 of elastic insulated packing ring 3.Insulation shell 1 is provided with the atrium 11 that holds arc control device 2.
Offer second cofferdam 111 around the atrium 11, be used for the elastic insulated packing ring 3 of support with first end 31 opposite second end 32.At last; The securing member of arc control device 2 usefulness such as screw connects with insulation shell 1 along the installation direction of insulating washer 3; Elastic insulated packing ring 3 deforms under the fastening force effect like this; Its first end 31 and the second end 32 are fitted closely, thereby inner ionized gas can only be expelled in the atmosphere through the inside of arc control device 2 with first cofferdam 22, the insulation shell 1 of arc control device 2 respectively.
When adopting above-mentioned low-voltage circuit breaker with sealing arc control device mounting structure; The first cofferdam rigidity contact matching of the insulation shell of circuit breaker and arc control device is owing to the intervention of elastic insulated packing ring is converted into flexible the contact; Fit clearance is owing to the elasticity filling disappears; So just make the insulation shell seamless link of first cofferdam and the circuit breaker of arc control device; The electric arc that produces during breaking current is compelled all to be got in the inner metal gate sheet of arc control device and can't from original rigidity fit clearance, leak in the ambient atmosphere, avoids causing outside electric arc to converge short circuit accident.Simultaneously, the arc control device internal pressure can not make electric arc to shift fast because of obviously decline of gas leakage yet.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.
Claims (3)
1. one kind has the low-voltage circuit breaker that seals the arc control device mounting structure; Comprise insulation shell (1) and arc control device (2); Said insulation shell (1) is provided with the atrium (11) that holds said arc control device (2); It is characterized in that: described arc control device (2) periphery has first cofferdam (22); Described atrium (11) has second cofferdam (111) all around, described first cofferdam (22) and the corresponding setting of described second cofferdam (111), and described low-voltage circuit breaker also comprises elastic insulated packing ring (3); Described elastic insulated packing ring (3) places between first cofferdam (22) and second cofferdam (111), and contacts with second cofferdam (111) sealing with first cofferdam (22).
2. low-voltage circuit breaker according to claim 1 is characterized in that: said elastic insulated packing ring (3) is the square frame shape.
3. low-voltage circuit breaker according to claim 1 is characterized in that: said elastic insulated packing ring (3) is a rubber washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205114299U CN202423182U (en) | 2011-12-09 | 2011-12-09 | Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205114299U CN202423182U (en) | 2011-12-09 | 2011-12-09 | Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202423182U true CN202423182U (en) | 2012-09-05 |
Family
ID=46747917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205114299U Expired - Lifetime CN202423182U (en) | 2011-12-09 | 2011-12-09 | Low-voltage circuit breaker with sealed arc extinguishing chamber mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202423182U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065898A (en) * | 2012-12-29 | 2013-04-24 | 上海良信电器股份有限公司 | Pressure sealing device used for circuit breaker contact system |
| CN107134395A (en) * | 2017-06-29 | 2017-09-05 | 无锡新宏泰电器科技股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker sealing installation structure |
| EP4117011A4 (en) * | 2020-03-03 | 2024-03-27 | LS Electric Co., Ltd. | Arc extinguishing assembly and circuit breaker comprising same |
-
2011
- 2011-12-09 CN CN2011205114299U patent/CN202423182U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065898A (en) * | 2012-12-29 | 2013-04-24 | 上海良信电器股份有限公司 | Pressure sealing device used for circuit breaker contact system |
| CN103065898B (en) * | 2012-12-29 | 2015-07-22 | 上海良信电器股份有限公司 | Pressure sealing device used for circuit breaker contact system |
| CN107134395A (en) * | 2017-06-29 | 2017-09-05 | 无锡新宏泰电器科技股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker sealing installation structure |
| EP4117011A4 (en) * | 2020-03-03 | 2024-03-27 | LS Electric Co., Ltd. | Arc extinguishing assembly and circuit breaker comprising same |
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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: 20120905 |