CN212365878U - Arc extinguishing device of circuit breaker and circuit breaker - Google Patents
Arc extinguishing device of circuit breaker and circuit breaker Download PDFInfo
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- CN212365878U CN212365878U CN202021938610.3U CN202021938610U CN212365878U CN 212365878 U CN212365878 U CN 212365878U CN 202021938610 U CN202021938610 U CN 202021938610U CN 212365878 U CN212365878 U CN 212365878U
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Abstract
The utility model provides a circuit breaker arc extinguishing device and circuit breaker relates to circuit breaker technical field. The circuit breaker arc extinguishing device comprises a base used for being connected with a circuit breaker body; a second arc extinguish chamber communicated with the first arc extinguish chamber in the circuit breaker body is arranged on the base, an arc extinguishing piece is arranged in the second arc extinguish chamber, and a through hole is formed in the arc extinguishing piece; an exhaust passage communicated with the second arc extinguish chamber is arranged on the side wall of the base. The circuit breaker comprises a circuit breaker body and a circuit breaker arc extinguishing device; a first arc extinguish chamber is arranged in the circuit breaker body, and a channel communicated with the first arc extinguish chamber is formed in the circuit breaker body; the second arc-extinguishing chamber is communicated with the first arc-extinguishing chamber through a channel. The technical effect of rapid and efficient breaking is achieved.
Description
Technical Field
The utility model relates to a circuit breaker technical field particularly, relates to circuit breaker arc extinguishing device and circuit breaker.
Background
In recent years, breaking indexes of the molded case circuit breaker are continuously improved, however, the size of the circuit breaker is more and more miniaturized, the air pressure inside an arc extinguish chamber of the circuit breaker is also more and more increased due to the limitation of space, a shell is often exploded by airflow generated during breaking, a contact system and an arc extinguish system are continuously consumed by generated electric arcs, breaking capacity cannot be improved, and therefore rapid and efficient pressure reduction of electric arc gas in the arc extinguish chamber needs to be guaranteed.
As known in the art, the molded case circuit breaker includes a single-break structure, and since the single-break structure circuit breaker has only one arc gas exhaust channel, the exhaust channel is located at a power inlet end of the molded case circuit breaker, and therefore, due to the limitation of the exhaust channel, it is often difficult or even impossible to achieve the performance requirement of fast and efficient breaking, which is expected in the industry.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a circuit breaker arc extinguishing device and a circuit breaker with quick breaking.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit breaker arc extinguishing device and circuit breaker to alleviate the unable quick among the prior art, the high-efficient disconnected technical problem of section.
In a first aspect, an embodiment of the present invention provides an arc extinguishing apparatus for a circuit breaker, including a base for connecting with a circuit breaker body;
a second arc extinguish chamber communicated with the first arc extinguish chamber in the circuit breaker body is arranged on the base, an arc extinguishing piece is arranged in the second arc extinguish chamber, and a through hole is formed in the arc extinguishing piece;
and an exhaust channel communicated with the second arc extinguish chamber is formed in the side wall of the base.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the number of the through holes is multiple.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the through holes are uniformly distributed on the arc extinguishing plate.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a mounting groove is provided in the second arc extinguish chamber, and the arc extinguish member is detachably disposed in the mounting groove.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the number of the mounting grooves is multiple.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the mounting groove is disposed in the second arc extinguishing chamber at equal intervals.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the exhaust channel adopts an exhaust groove, and the exhaust groove is communicated with the second arc extinguish chamber.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the exhaust channel adopts an exhaust hole, and the exhaust hole is communicated with the second arc extinguish chamber.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the number of the exhaust holes is multiple, and multiple the exhaust holes are uniformly distributed on the base along the vertical direction.
In a second aspect, an embodiment of the present invention provides a circuit breaker, including a circuit breaker body and the circuit breaker arc extinguishing device;
a first arc extinguish chamber is arranged in the circuit breaker body, and a channel communicated with the first arc extinguish chamber is formed in the circuit breaker body;
the second arc-extinguishing chamber is communicated with the first arc-extinguishing chamber through the channel;
and an arc extinguish chamber inlet corresponding to the channel is arranged on the second arc extinguish chamber.
Has the advantages that:
the utility model provides a circuit breaker arc extinguishing device, which comprises a base used for being connected with a circuit breaker body; a second arc extinguish chamber communicated with the first arc extinguish chamber in the circuit breaker body is arranged on the base, an arc extinguishing piece is arranged in the second arc extinguish chamber, and a through hole is formed in the arc extinguishing piece; an exhaust passage communicated with the second arc extinguish chamber is arranged on the side wall of the base.
When specifically using, this internal branch of circuit breaker produces electric arc, electric arc partly can be discharged by first explosion chamber arc extinguishing, another part electric arc can be along in the leading-in second explosion chamber of first explosion chamber, the electric arc that gets into the second explosion chamber can flow along the second explosion chamber, then cut apart electric arc through the through-hole on the arc extinguishing piece, and cool down the arc extinguishing through the air in the second explosion chamber to electric arc, then gaseous follow exhaust passage and discharge, through such setting, can realize the arc extinguishing fast and exhaust, accomplish the branch work of circuit breaker.
The utility model provides a circuit breaker, which comprises a circuit breaker body and a circuit breaker arc extinguishing device; a first arc extinguish chamber is arranged in the circuit breaker body, and a channel communicated with the first arc extinguish chamber is formed in the circuit breaker body; the second arc-extinguishing chamber is communicated with the first arc-extinguishing chamber through a channel. The circuit breaker has the above advantages compared to the prior art, and is not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view illustrating an arc extinguishing device of a circuit breaker according to an embodiment of the present invention mounted on a circuit breaker body;
fig. 2 is a cross-sectional view of a circuit breaker arc extinguishing device provided by an embodiment of the invention, which is mounted on a circuit breaker body;
fig. 3 is a schematic view illustrating an installation of the arc extinguishing device of the circuit breaker onto the circuit breaker body according to the embodiment of the present invention;
fig. 4 is a schematic structural view of an arc extinguishing device of a circuit breaker provided by an embodiment of the present invention without an arc extinguishing piece;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
fig. 6 is a schematic structural view of an arc extinguishing piece in an arc extinguishing apparatus of a circuit breaker according to an embodiment of the present invention.
Icon:
100-a circuit breaker body; 110-a first arc chute; 111-channel;
200-a base; 210-a second arc chute; 211-an arc chute inlet; 220-an exhaust channel; 230-mounting grooves;
300-arc extinguishing piece; 310-through holes.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2, 3, 4, 5 and 6, the present embodiment provides a circuit breaker arc extinguishing apparatus including a base 200 for connecting with a circuit breaker body 100; a second arc extinguish chamber 210 communicated with the first arc extinguish chamber 110 in the circuit breaker body 100 is arranged on the base 200, an arc extinguishing piece 300 is arranged in the second arc extinguish chamber 210, and a through hole 310 is formed in the arc extinguishing piece 300; the side wall of the base 200 is opened with an exhaust passage 220 communicated with the second arc-extinguishing chamber 210.
When specifically using, when breaking off production electric arc in the circuit breaker body 100, electric arc partly can be discharged by first explosion chamber 110 arc extinction, another part electric arc can be along first explosion chamber 110 leading-in second explosion chamber 210 in, the electric arc that gets into second explosion chamber 210 can flow along second explosion chamber 210, then cut apart electric arc through-hole 310 on the arc extinguishing piece 300, and cool down the arc extinguishing through the air in the second explosion chamber 210, then gaseous follow exhaust passage 220 is discharged, through such setting, can realize the arc extinguishing fast and exhaust, accomplish the disconnected work of circuit breaker.
Specifically, when the moving contact and the fixed contact of the circuit breaker body 100 are separated, an electric arc is generated, and the electric arc is extinguished through the first arc extinguishing chamber 110 of the circuit breaker body 100, but in the prior art, the first arc extinguishing chamber 110 of the circuit breaker body 100 often cannot complete the arc extinguishing work, so that the circuit breaker body 100 is cracked; the arc extinguishing device of the circuit breaker provided by the embodiment can introduce the electric arc entering the first arc extinguishing chamber 110 into the second arc extinguishing chamber 210 of the base 200, so that the transferred electric arc and the air flow are consumed quickly, and the function of quickly breaking the circuit breaker is realized.
The arc entering the second arc-extinguishing chamber 210 of the base 200 is cooled by air, and when moving along the second arc-extinguishing chamber 210, the arc is divided into a plurality of small parts by the arc-extinguishing piece 300 in the second arc-extinguishing chamber 210, so as to extinguish the arc quickly. Specifically, the arc is divided by the through holes 310 on the arc extinguishing piece 300, and when the arc penetrates through the through holes 310 on the arc extinguishing piece 300, the arc is divided into a plurality of small parts, so that the contact area between air and the arc is increased, and the arc is rapidly cooled.
The arc extinguishing piece 300 is arranged in the second arc extinguishing chamber 210, and the arc extinguishing piece 300 completely blocks the second arc extinguishing chamber 210, so that the arc can only pass through the through hole 310 of the arc extinguishing piece 300, and the arc extinguishing effect is improved.
It should be noted that the arc extinguishing piece 300 may be made of metal or nonmetal.
It should also be noted that the through hole 310 is opened on the arc extinguishing piece 300, and when passing through the second arc extinguishing chamber 210, the arc is blocked by the arc extinguishing piece 300, so that the arc can only flow through the through hole 310, and therefore the air pressure of the second arc extinguishing chamber 210 can be adjusted through the arrangement of the arc extinguishing piece 300, and the metal particles discharged outwards can be reduced, and therefore the pollution of the metal particles to the external environment is reduced.
Wherein, the base 200 is provided with a passage for the bus bar of the circuit breaker body 100 to pass through.
Referring to fig. 6, in an alternative embodiment, the number of the through holes 310 is plural.
Specifically, seted up a plurality of through-holes 310 on the arc extinguishing piece 300, when electric arc passed through arc extinguishing piece 300, electric arc need pass through-hole 310 on the arc extinguishing piece 300, and after electric arc passed through-hole 310, whole electric arc can be cut apart into a plurality of small electric arcs by a plurality of through-holes 310 to improve the area of contact of electric arc and air, thereby play the effect to electric arc rapid cooling, and then accomplish the arc extinguishing work.
Referring to fig. 6, in an alternative embodiment, a plurality of through holes 310 are uniformly distributed on the arc-extinguishing sheet 300.
Specifically, be provided with a plurality of through-holes 310 on arc extinguishing piece 300 to a plurality of through-holes 310 evenly distributed are on arc extinguishing piece 300, through such setting, can make whole electric arc pass a plurality of through-holes 310 back of arc extinguishing piece 300, and whole electric arc can be cut apart into a plurality of minutes electric arcs, makes a plurality of minutes electric arcs all can fully contact with the air, avoids two adjacent minutes electric arcs to communicate.
Referring to fig. 3, 4 and 5, in an alternative embodiment of the present embodiment, a mounting groove 230 is provided in the second arc-extinguishing chamber 210, and the arc-extinguishing piece 300 is detachably disposed in the mounting groove 230.
Specifically, the second arc extinguish chamber 210 is internally provided with a mounting groove 230 for mounting the arc extinguishing piece 300, and the arc extinguishing piece 300 is detachably mounted in the mounting groove 230, so that the arc extinguishing piece 300 can be conveniently mounted by a worker.
A fastener can be arranged at the notch of the mounting groove 230, so that the arc-extinguishing piece 300 can be fixed when the arc-extinguishing piece 300 is mounted in the mounting groove 230, and the arc-extinguishing piece 300 can be placed to move freely; the buckle can be released during disassembly, so that the arc extinguishing piece 300 can be conveniently replaced.
Referring to fig. 3, 4 and 5, in an alternative of the present embodiment, the number of the mounting grooves 230 is plural.
Specifically, a plurality of mounting grooves 230 are provided in the second arc-extinguishing chamber 210, and a plurality of arc-extinguishing pieces 300 can be provided in the second arc-extinguishing chamber 210 by providing the plurality of mounting grooves 230, so that the arc-extinguishing effect is improved.
Specifically, when the arc passes through the plurality of arc extinguishing plates 300 in sequence, the arc is cut down by the plurality of arc extinguishing plates 300 in sequence, so that rapid arc extinguishing is realized, and the breaker is rapidly disconnected.
Referring to fig. 3, 4 and 5, in an alternative of the present embodiment, a plurality of mounting grooves 230 are provided at equal intervals in the second arc-extinguishing chamber 210.
Specifically, the distance between two adjacent mounting grooves 230 is the same, so that the arc can be in contact with the air in sufficient space and time after being separated by one arc extinguishing piece 300, and the cooling effect of the air on the arc is improved.
Referring to fig. 3, 4 and 5, in an alternative of the present embodiment, the exhaust passage 220 employs an exhaust groove, and the exhaust groove communicates with the second arc-extinguishing chamber 210.
Specifically, set up exhaust passage 220 on base 200 can adopt the form of exhaust groove to exhaust groove and second explosion chamber 210 keep communicating, and the electric arc that handles through second explosion chamber 210 arc extinguishing can be followed the exhaust groove and discharged, and when in actual use, the setting through second explosion chamber 210 and arc extinguishing piece 300 is only air from the exhaust groove exhaust, can quick arc extinguishing.
In an alternative of this embodiment, the exhaust passage 220 employs an exhaust hole, and the exhaust hole communicates with the second arc-extinguishing chamber 210.
Specifically, the exhaust channel 220 opened on the base 200 may be in the form of an exhaust hole, and the exhaust hole is communicated with the second arc-extinguishing chamber 210, and the arc processed by the arc-extinguishing of the second arc-extinguishing chamber 210 may be exhausted from the exhaust hole, and in practical use, only air is exhausted from the exhaust groove through the arrangement of the second arc-extinguishing chamber 210 and the arc-extinguishing piece 300, so that the arc can be quickly extinguished. In addition, the metal particles discharged outwards can be reduced through the arrangement of the exhaust holes, so that the pollution of the metal particles to the external environment is reduced.
In an alternative of this embodiment, the number of the exhaust holes is plural, and the plural exhaust holes are uniformly distributed on the base 200 along the vertical direction.
Specifically, the base 200 may be provided with a plurality of exhaust holes, so as to increase the exhaust amount and prevent the first arc-extinguishing chamber 110 of the circuit breaker body 100 and the second arc-extinguishing chamber 210 of the base 200 from being burst due to an excessive air pressure.
Moreover, the plurality of exhaust holes are arranged along the vertical direction, and the distances between two adjacent rows of exhaust holes are equal, which is beneficial to the second arc extinguish chamber 210 to exhaust the airflow.
The embodiment provides a circuit breaker, which comprises a circuit breaker body 100 and a circuit breaker arc extinguishing device; a first arc extinguish chamber 110 is arranged in the circuit breaker body 100, and a channel 111 communicated with the first arc extinguish chamber 110 is formed in the circuit breaker body 100; second arc chute 210 communicates with first arc chute 110 through passage 111; the second arc chute 210 is provided with an arc chute inlet 211 corresponding to the channel 111.
Specifically, the circuit breaker body 100 is provided with a channel 111, and after the circuit breaker body 100 is connected to the base 200, the channel 111 on the circuit breaker body 100 can be communicated with the second arc-extinguishing chamber 210, so that the first arc-extinguishing chamber 110 is communicated with the second arc-extinguishing chamber 210.
The base 200 and the circuit breaker body 100 can be connected together through bolts, so that the base 200 and the circuit breaker body 100 cannot be separated randomly.
Therein, an arc flowing out of the first arc chute 110 in the circuit breaker body 100 can flow along the channel 111 towards the arc chute inlet 211, then into the second arc chute 210, and be extinguished in the second arc chute 210.
In addition, the circuit breaker that this embodiment provided still has above-mentioned advantage compared with prior art, and the repeated description is not repeated here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. An arc extinguishing device of a circuit breaker, comprising: a base (200) for connection with a circuit breaker body (100);
a second arc extinguish chamber (210) communicated with the first arc extinguish chamber (110) in the circuit breaker body (100) is arranged on the base (200), an arc extinguishing piece (300) is arranged in the second arc extinguish chamber (210), and a through hole (310) is formed in the arc extinguishing piece (300);
an exhaust channel (220) communicated with the second arc extinguish chamber (210) is formed in the side wall of the base (200).
2. The circuit breaker arc extinguishing apparatus of claim 1, wherein the number of the through holes (310) is plural.
3. The circuit breaker arc extinguishing apparatus of claim 2, wherein a plurality of the through holes (310) are evenly distributed on the arc extinguishing plate (300).
4. The circuit breaker arc extinguishing apparatus according to claim 1, wherein a mounting groove (230) is provided in the second arc extinguishing chamber (210), and the arc extinguishing piece (300) is detachably disposed in the mounting groove (230).
5. The circuit breaker arc extinguishing apparatus of claim 4, wherein the number of the mounting grooves (230) is plural.
6. The circuit breaker arc extinguishing apparatus of claim 5, wherein a plurality of the mounting grooves (230) are disposed at equal intervals in the second arc extinguishing chamber (210).
7. The circuit breaker arc extinguishing apparatus according to any one of claims 1-6, characterized in that the exhaust channel (220) is an exhaust slot, which communicates with the second arc extinguishing chamber (210).
8. The circuit breaker arc extinguishing device according to any one of claims 1-6, characterized in that the exhaust channel (220) employs an exhaust hole, which communicates with the second arc extinguishing chamber (210).
9. The circuit breaker arc extinguishing apparatus according to claim 8, wherein the number of the exhaust holes is plural, and the plural exhaust holes are uniformly distributed on the base (200) in a vertical direction.
10. A circuit breaker comprising a circuit breaker body (100) and a circuit breaker arc extinguishing device according to any one of claims 1-9;
a first arc-extinguishing chamber (110) is arranged in the circuit breaker body (100), and a channel (111) communicated with the first arc-extinguishing chamber (110) is formed in the circuit breaker body (100);
the second arc chute (210) communicates with the first arc chute (110) through the channel (111);
and an arc extinguishing chamber inlet (211) corresponding to the channel (111) is arranged on the second arc extinguishing chamber (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938610.3U CN212365878U (en) | 2020-09-07 | 2020-09-07 | Arc extinguishing device of circuit breaker and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938610.3U CN212365878U (en) | 2020-09-07 | 2020-09-07 | Arc extinguishing device of circuit breaker and circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN212365878U true CN212365878U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021938610.3U Active CN212365878U (en) | 2020-09-07 | 2020-09-07 | Arc extinguishing device of circuit breaker and circuit breaker |
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| CN (1) | CN212365878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820604A (en) * | 2021-02-07 | 2021-05-18 | 浙江世隆电气科技有限公司 | Zero-flashover molded case circuit breaker |
-
2020
- 2020-09-07 CN CN202021938610.3U patent/CN212365878U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820604A (en) * | 2021-02-07 | 2021-05-18 | 浙江世隆电气科技有限公司 | Zero-flashover molded case circuit breaker |
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