CN202977342U - Low-voltage circuit breaker - Google Patents
Low-voltage circuit breaker Download PDFInfo
- Publication number
- CN202977342U CN202977342U CN 201220737249 CN201220737249U CN202977342U CN 202977342 U CN202977342 U CN 202977342U CN 201220737249 CN201220737249 CN 201220737249 CN 201220737249 U CN201220737249 U CN 201220737249U CN 202977342 U CN202977342 U CN 202977342U
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- Prior art keywords
- circuit breaker
- low
- exhaust passage
- shaped exhaust
- voltage circuit
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Abstract
The utility model provides a low-voltage circuit breaker and belongs to the technical field of low-voltage electrical appliances. The low-voltage circuit breaker includes a housing composed of a base and a cover shell; the base is intervally provided with pole separation cavities, and a group of standard single pole module units which are arranged in the pole separation cavities, wherein an arc extinguishing device is arranged inside each standard single pole module. The low-voltage circuit breaker is characterized in that each standard single pole module unit is provided with a U-shaped exhaust channel; one end of the U-shaped exhaust channel is communicated with the arc extinguishing device; and the other end of the U-shaped exhaust channel is communicated with the outside. The low-voltage circuit breaker has the following advantages that: effective cooling and ionization elimination of an arc-extinguishing gas can be effectively performed; the frequency of ejection of charged ions can be effectively lowered; short-circuit faults which occur at wiring terminals of the circuit breaker can be effectively reduced; and the safety performance of the low-voltage circuit breaker is improved.
Description
Technical field
the utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of low-voltage circuit breaker, for the protection to circuit.
Background technology
low-voltage circuit breaker, in the process of disjunction fault current, particularly, in the breaking course to large short circuit current electric current, can produce the arc extinguishing gases of the metal ion of a large amount of high temperature, high pressure in arc control device.The exhaust passage of the arc control device of existing circuit breaker is limited to the shorter of the general design of volume restrictions, and generally adopt the straight way design, be unfavorable for the cooling and filtration of the gas of arc control device HTHP metal ion, the charged ion ejection circuit breaker outside easily occurs, even operating personnel are damaged to or cause the accident of the binding post place short circuit of circuit breaker.There are improvements in existing design.
Summary of the invention
task of the present utility model be to provide a kind of there is rational arc control device exhaust passage and use the ejection that effectively reduces charged ion, the binding post place that prevents circuit breaker is short-circuited fault and improve the low-voltage circuit breaker of fail safe.
task of the present utility model completes like this, and a kind of low-voltage circuit breaker comprises by a pedestal and is configured in the shell that the lid on pedestal forms, and this pedestal is every being provided with the interpolar separate space equated with the number of poles of circuit breaker; Be contained in one group of standard one pole modular unit in each interpolar separate space, be provided with arc-control device in described standard one pole modular unit, characteristics are, also be provided with a U-shaped exhaust passage at described standard one pole modular unit, described U-shaped exhaust passage one end is communicated with described arc-control device, and the other end is in communication with the outside.
in a specific embodiment of the present utility model, described one group of standard one pole modular unit respectively comprises trip gear, arc-control device, the first binding post, the second binding post, can realize separating or closed contact system and bearing, first, the second binding post is separately positioned on the two ends of the length direction of described bearing, described bearing comprises the horizontal splitter plate of a horizontally set, horizontal splitter plate is separated into the first container cavity that holds trip gear that is positioned at the horizontal splitter plate top and the second container cavity that holds arc-control device that is positioned at the horizontal splitter plate below by bearing, the second container cavity extends to form towards the direction of the second binding post the 3rd container cavity that holds contact system, described U-shaped exhaust passage is arranged on the side of described the second container cavity towards the direction of the first binding post, one end of described U-shaped exhaust passage is communicated with the second container cavity, the other end is in communication with the outside.
in another specific embodiment of the present utility model, the demarcation strip of described bearing extends and forms a U-shaped bend to described pedestal direction towards an end of the first binding post, and described U-shaped exhaust passage is formed in the bottom of described U-shaped bend; The side that described U-shaped exhaust passage is positioned at described the second container cavity is provided with an orifice plate, and described orifice plate offers at least one air vent hole that connects described the second container cavity and described U-shaped exhaust passage at the end towards described demarcation strip; The side that described U-shaped exhaust passage is positioned at the first terminal is provided with one for making the spoiler of the gas and changing flow direction.
in another specific embodiment of the present utility model, described orifice plate and the one-body molded making of described bearing or with the one-body molded making of described pedestal.
advance a specific embodiment of the present utility model, described spoiler with the one-body molded making of described bearing or with the one-body molded making of described pedestal.
the technical scheme that the utility model provides has a U-shaped exhaust passage owing to extending to form in a side of the exhaust outlet of the second container cavity to the direction of the first binding post at bearing, to be arranged at by this U-shaped exhaust passage the arc extinguishing gases that the arc-control device in the second container cavity produces in the arc extinguishing process is that electric arc aerogenesis body is discharged, simultaneously, increase spoiler and orifice plate in the U-shaped exhaust passage, make the arc extinguishing gases discharge path crooked tortuous, the structural design in this kind of similar labyrinth, can carry out effective cooling and disappear free arc extinguishing gases, can effectively reduce the ejection of charged ion, the binding post place that the prevents circuit breaker fault that is short-circuited, improve the fail safe of low-voltage circuit breaker.
The accompanying drawing explanation
fig. 1 is the utility model overall structure figure.
fig. 2 is the utility model confined state schematic diagram.
the structure chart that Fig. 3 is standard one pole modular unit of the present utility model.
fig. 4 is the schematic diagram that arc extinguishing gases is discharged by the U-shaped exhaust passage.
fig. 5 is the force diagram of the arc extinguishing gases shown in Fig. 4 to the effect of U-shaped exhaust passage.
Embodiment
in order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not the restriction to technical scheme to the description of embodiment, anyly according to the utility model design, changes in the form rather than substance all and should be considered as protection range of the present utility model.
refer to Fig. 1, provided a shell 1, the uncovered position that this shell 1 comprises pedestal 11 and is disposed at pedestal 11 is the lid 12 of shown position state towards a upper side, is provided with the operating mechanism 2 of one group of standard one pole module 3 and one and actuating standard one pole module 3 that match with one group of standard one pole module 3 in pedestal 1.
ask for an interview Fig. 2, shown in this Fig. 2, form on aforesaid pedestal 11 and interpolar is arranged every 111, and, from the signal of Fig. 2, the present embodiment is for the low-voltage circuit breaker with three utmost points.Again, owing to being three utmost point low-voltage circuit breakers, therefore the quantity of aforesaid standard one pole modular unit 3 is three, that is to say that the quantity of standard one pole module 3 and the number of poles of low-voltage circuit breaker keep the relation of following in sb's footsteps.
refer to Fig. 3 and Fig. 4, because the structure of one group of (the present embodiment is three) standard one pole module 3 is identical, therefore Fig. 3 has illustrated one of them standard one pole module 3, this standard one pole module 3 comprises the first binding post 31, the second binding post 32, trip gear 33, arc-control device 34, can realize separating or closed contact system and bearing 35, trip gear 33 comprises magnetic release 331 and thermal overload release 332, first, the second binding post 31, 32 are separately positioned on the two ends of the length direction of described bearing 35, described bearing 35 comprises the horizontal splitter plate 350 of a horizontally set, the demarcation strip 350 of described bearing 35 extends and forms a U-shaped bend to described pedestal 11 directions towards an end of the first binding post 31, and thermal overload release 332 is arranged in this U-shaped bend, horizontal splitter plate 350 is separated into the first container cavity 351 that holds magnetic release 331 that is positioned at horizontal splitter plate 350 tops and the second container cavity 352 that holds arc-control device 34 that is positioned at horizontal splitter plate 350 belows (concept of below is with location status shown in 3) by bearing 35, described the second container cavity 352 extends to form to the direction of the second binding post 32 the 3rd container cavity 353 that holds contact system.
the technical essential of the technical scheme provided as the utility model: on aforesaid bearing 35 and towards the direction of the first binding post 31, extending to form has arc extinguishing gases (being arcing gas) that the arc-control device 34 for being arranged in aforementioned the second container cavity 352 that communicates with the second container cavity 352 produces in the arc extinguishing process to draw the U-shaped exhaust passage 4 of the second container cavity 352, described U-shaped exhaust passage 4 is formed in the bottom of described U-shaped bend, one end of described U-shaped exhaust passage 4 is communicated with the second container cavity 352, and the other end is in communication with the outside.
please continue to see Fig. 4 and, in conjunction with Fig. 5, include a spoiler 41 in aforesaid U-shaped exhaust passage 4, described spoiler 41 can be made with described bearing 35 in moulding, also can with the one-body molded making of described pedestal 11.In the circuit breaker breaking course, arc-control device 34 produces a large amount of high temperature, the arc extinguishing gases of high pressure enters the second container cavity 352, characteristic due to arc extinguishing gases high temperature, high pressure, spoiler 41 in U-shaped exhaust passage 4 makes the more crooked complications of arc extinguishing gases discharge path, is more conducive to arc extinguishing gases and carries out effective cooling and disappear free.
aforesaid U-shaped exhaust passage 4 also includes an orifice plate 42, and described orifice plate 42 can be made with described bearing 35 in moulding, also can with the one-body molded making of described pedestal 11.Position bordered in position, boundary or title that this orifice plate 42 is positioned at U-shaped bend and the second container cavity 352, be the exhaust ports of arc-control device 34, offer at least one for connecting the air vent hole (not shown) of the second container cavity 352 and U-shaped exhaust passage 4 arc extinguishing gases on this orifice plate 42.
at circuit breaker disjunction fault current during as the disjunction short circuit current, the air vent hole of the arc extinguishing gases shown in the HTHP arc extinguishing gases arrow as shown in Figure 4 produced when the arc extinguishing by the arc-control device 34 that is positioned at the second container cavity 352 on orifice plate 42 and enter U-shaped exhaust passage 4.Because arc extinguishing gases has the HTHP characteristic, thereby when the U-shaped exhaust passage 4 by way of tortuous, make corresponding surface on the first side plate 43 on U-shaped exhaust passage 4 and the second side plate 44 and pedestal 11 effect of close contact more, exhaust passage and extraneous air-tightness have been guaranteed, effectively prevent arc extinguishing gases pollution with operating mechanism 2 to trip gear 33, (as shown in Fig. 5 arrow), spoiler 41 in U-shaped exhaust passage 4 makes the more crooked complications of arc extinguishing gases discharge path simultaneously, the structural design in this kind of similar labyrinth, can carry out effective cooling and disappear free arc extinguishing gases, effectively prevent that arc extinguishing gases from polluting the insulation of breaker connecting terminal, strengthen the reliable breaking of circuit breaker.
Claims (5)
1.
a kind of low-voltage circuit breaker comprises by a pedestal (11) and is configured in the shell (1) that the lid (12) on pedestal (11) forms that this pedestal (11) is every being provided with the interpolar separate space (111) equated with the number of poles of circuit breaker; Be contained in the one group of standard one pole modular unit (3) in each interpolar separate space (111), be provided with arc-control device (34) in described standard one pole modular unit (3), it is characterized in that: at described standard one pole modular unit (3), also be provided with a U-shaped exhaust passage (4), described U-shaped exhaust passage (4) one ends are communicated with described arc-control device (34), and the other end is in communication with the outside.
2.
a kind of low-voltage circuit breaker according to claim 1, it is characterized in that described one group of standard one pole modular unit (3) respectively comprises trip gear (33), arc-control device (34), the first binding post (31), the second binding post (32), can realize separating or closed contact system and bearing (35), first, the second binding post (31, 32) be separately positioned on the two ends of the length direction of described bearing (35), described bearing (35) comprises the horizontal splitter plate (350) of a horizontally set, horizontal splitter plate (350) is separated into the first container cavity (351) that holds trip gear (33) that is positioned at horizontal splitter plate (350) top and the second container cavity (352) that holds arc-control device (34) that is positioned at horizontal splitter plate (350) below by bearing (35), the second container cavity (352) extends to form towards the direction of the second binding post (32) the 3rd container cavity that holds contact system, described U-shaped exhaust passage (4) is arranged on the side of described the second container cavity (352) towards the direction of the first binding post, one end of described U-shaped exhaust passage (4) is communicated with the second container cavity (352), the other end is in communication with the outside.
3.
a kind of low-voltage circuit breaker according to claim 2, the demarcation strip (350) that it is characterized in that described bearing (35) extends and forms a U-shaped bend to described pedestal (11) direction towards an end of the first binding post (31), and described U-shaped exhaust passage (4) is formed in the bottom of described U-shaped bend; The side that described U-shaped exhaust passage (4) is positioned at described the second container cavity (352) is provided with an orifice plate (42), and described orifice plate (42) offers at least one air vent hole that connects described the second container cavity (352) and described U-shaped exhaust passage (4) at the end towards described demarcation strip (350); The side that described U-shaped exhaust passage (4) is positioned at the first terminal (31) is provided with one for making the spoiler (41) of the gas and changing flow direction.
4.
a kind of low-voltage circuit breaker according to claim 3, it is characterized in that described orifice plate (42) and the one-body molded making of described bearing (35) or with the one-body molded making of described pedestal (11).
5.
a kind of low-voltage circuit breaker according to claim 3, it is characterized in that described spoiler (41) with the one-body molded making of described bearing (35) or with the one-body molded making of described pedestal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737249 CN202977342U (en) | 2012-12-28 | 2012-12-28 | Low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737249 CN202977342U (en) | 2012-12-28 | 2012-12-28 | Low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977342U true CN202977342U (en) | 2013-06-05 |
Family
ID=48518386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737249 Expired - Lifetime CN202977342U (en) | 2012-12-28 | 2012-12-28 | Low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10431963B2 (en) | 2015-02-19 | 2019-10-01 | Abb Schweiz Ag | Exhaust system for switchgear enclosure, and switchgear enclosure having the same |
-
2012
- 2012-12-28 CN CN 201220737249 patent/CN202977342U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10431963B2 (en) | 2015-02-19 | 2019-10-01 | Abb Schweiz Ag | Exhaust system for switchgear enclosure, and switchgear enclosure having the same |
| US10971905B2 (en) | 2015-02-19 | 2021-04-06 | Abb Schweiz Ag | Exhaust system for switchgear enclosure, and switchgear enclosure having the 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: 20130605 |