CN113889384B - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN113889384B CN113889384B CN202110935231.1A CN202110935231A CN113889384B CN 113889384 B CN113889384 B CN 113889384B CN 202110935231 A CN202110935231 A CN 202110935231A CN 113889384 B CN113889384 B CN 113889384B
- Authority
- CN
- China
- Prior art keywords
- arc
- piece
- arc striking
- circuit breaker
- groove
- 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.)
- Active
Links
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Abstract
A circuit breaker is provided. The circuit breaker of mainly solving not having installation explosion chamber at present is difficult to lead the problem of arc. The method is characterized in that: a first arc striking piece (4) is arranged in the shell opposite to the movable contact piece, a second arc striking piece (5) is arranged opposite to the static contact piece, and an arc striking channel (6) communicated with the first through groove is formed between the first arc striking piece and the second arc striking piece; and an arc striking part (51) and a second through groove (52) are arranged on the second arc striking plate and opposite to the lower end of the static contact plate. The invention provides a circuit breaker, which can realize the functions of arc guiding and gas guiding through an arc guiding part and a through groove on a second arc guiding sheet, can realize the processing of electric arcs in a limited space, is safer to use, and further has a certain function of preventing back spraying.
Description
Technical Field
The invention relates to the field of low-voltage electric appliances, in particular to a circuit breaker.
Background
A circuit breaker is a switching device for cutting off and closing a load circuit and cutting off a fault circuit to prevent an accident from being enlarged, thereby ensuring safe operation of the load circuit.
At present, some circuit breakers are not provided with an arc extinguishing chamber due to the consideration of installation space, and thus, how to guide arc becomes a problem which needs to be solved.
Disclosure of Invention
In order to overcome the defects of the background art, the invention provides a circuit breaker, which mainly solves the problem that the circuit breaker without an arc extinguish chamber is difficult to conduct arc.
The specific scheme of the invention is as follows:
a circuit breaker comprises a shell, wherein a movable contact piece and a static contact piece are arranged in the shell, a first through groove is formed in the shell in a penetrating mode, a first arc striking piece is arranged in the shell opposite to the movable contact piece, a second arc striking piece is arranged opposite to the static contact piece, and an arc striking channel communicated with the first through groove is formed between the first arc striking piece and the second arc striking piece;
and an arc striking part and a second through groove are formed in the second arc striking plate and opposite to the lower end of the static contact plate.
The shell is internally provided with an annular bulge, an air cavity is formed in the annular bulge, the static contact piece is provided with a static contact, and the air cavity is arranged opposite to the static contact.
The second arc striking piece comprises an arc guiding piece and a blocking piece, the arc guiding piece is connected with the blocking piece through an arc piece, and the arc striking part and the second through groove are arranged on the arc piece.
The arc-shaped piece faces the fixed contact.
A first arc striking channel is formed between the blocking piece and the arc guiding piece, a second arc striking channel is formed between the blocking piece and the first arc striking piece, and the blocking piece and the front end of the arc guiding piece are oppositely arranged and used for blocking gas back spraying.
And a buffer cavity is also arranged between the arc striking channel and the first through groove, and an air filtering device is arranged in the buffer cavity.
The air filtering device comprises a wavy main board, the main board divides the buffer cavity into a plurality of sub-buffer cavities, and a plurality of first through holes communicated with the sub-buffer cavities are formed in the main board.
The buffer cavity comprises an inlet, and a second through hole which is arranged corresponding to the inlet is formed in the main board.
And a notch groove is formed in the first arc striking plate opposite to the inlet.
The arc striking channel is connected with the buffer cavity through a long and narrow connecting channel.
The invention has the beneficial effects that: the invention provides a circuit breaker, which can realize the functions of arc guiding and gas guiding through an arc guiding part and a through groove on a second arc guiding sheet, can realize the processing of electric arcs in a limited space, is safer to use, and further has a certain function of preventing back spraying.
Drawings
Fig. 1 is a schematic view of the internal structure of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is an enlarged schematic view of fig. 1 at B.
Fig. 4 is a schematic view of a second arc runner according to an embodiment of the present invention.
Fig. 5 is a schematic view of a first arc runner according to an embodiment of the present invention.
Fig. 6 is a schematic view of an air filter device according to an embodiment of the present invention.
Fig. 7 is a schematic view of the internal structure of an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which: as shown in the figures, the circuit breaker comprises a shell 1, wherein a movable contact piece 2 and a static contact piece 3 are arranged in the shell, a first through groove 11 is arranged on the shell in a penetrating manner, a first arc striking piece 4 is arranged in the shell opposite to the movable contact piece, a second arc striking piece 5 is arranged in the shell opposite to the static contact piece, and an arc striking channel 6 communicated with the first through groove is formed between the first arc striking piece and the second arc striking piece; and an arc striking part 51 and a second through groove 52 are arranged on the second arc striking plate opposite to the lower end of the static contact plate. Be equipped with the moving contact on the movable contact piece, be equipped with the static contact on the static contact, can produce electric arc and high-temperature gas when the movable contact and the static contact separate, this gaseous partly through the second lead to the groove then enter into the striking passageway, this electric arc can be attracted by striking portion, and then with first striking between the piece prolong extinguish, greatly increased the security of using.
The invention provides a circuit breaker, which can realize the functions of arc guiding and gas guiding through an arc guiding part and a second through groove on a second arc guiding sheet, can realize the processing of electric arcs in a limited space and is safer to use.
In the invention, as shown in the figure, an annular protrusion 12 is arranged in the housing, an air cavity 121 is formed in the annular protrusion, a static contact 31 is arranged on the static contact, and the air cavity is arranged opposite to the static contact. The gas can be firstly gathered in the gas cavity and then sent out, which is more beneficial to gas guiding.
In the present invention, as shown in the figure, the second arc striking plate includes an arc guiding plate 53 and a blocking plate 54, the arc guiding plate is connected to the blocking plate through an arc plate 55, and the arc striking portion and the second through groove are disposed on the arc plate. At this arc piece, the junction of leading arc piece and separation blade promptly sets up leading arc portion and second and leads to the groove, and the effect of arc and air guide is led in realization that can be better, and its position is comparatively close in the static contact, and on the other hand, partly gaseous leads to the groove back through the second, can continue to advance along the inner wall that leads the arc piece, then outside first logical groove discharge casing.
In the present invention, as shown in the figure, the arc-shaped piece faces the fixed contact. The arc striking and gas guiding functions can be better realized.
In the invention, as shown in the figure, a first arc striking channel 61 is formed between the blocking piece and the arc guiding piece, a second arc striking channel 62 is formed between the blocking piece and the first arc striking piece, and the blocking piece and the front end of the arc guiding piece are oppositely arranged for blocking gas back spraying. When gas is reversely sprayed, a part of the gas can advance along the direction of the tangent line K of the arc guiding sheet and then is blocked by the blocking sheet, so that the speed and the quantity of reverse spraying can be greatly reduced, and the gas reverse spraying device is safer to use.
In the invention, as shown in the figure, a buffer cavity 13 is further arranged between the arc striking channel and the first through groove, and an air filtering device 7 is arranged in the buffer cavity. The buffer cavity can reduce the speed of gas sprayed out of the shell, and the use is safer.
In the present invention, as shown in the figure, the air filtering device includes a wavy main plate 71, the main plate divides the buffer cavity into a plurality of sub-buffer cavities 131, and the main plate is provided with a first through hole 711 for communicating the sub-buffer cavities. The flow velocity of the gas can be greatly reduced, and the first through hole can better adsorb the possible electric sparks.
In the present invention, as shown in the figure, the buffer chamber includes an inlet 132, and the main board is provided with a second through hole 712 corresponding to the inlet. The second through hole is directed towards the inlet for gas to enter the buffer chamber.
In the present invention, as shown in the figure, the first arc striking plate is provided with a notch groove 41 opposite to the inlet. The gas can enter the buffer cavity conveniently.
In the present invention, as shown in the figure, the arc ignition channel and the buffer chamber are connected 14 through a long and narrow connecting channel. The gas can be cooled better, and the effect of preventing back spray can be achieved to a certain extent.
The embodiments described with reference to the drawings are illustrative and are intended to be illustrative of the invention and should not be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.
Claims (9)
1. The utility model provides a circuit breaker, includes casing (1), be equipped with movable contact (2) and static contact (3) in the casing, be equipped with the first logical groove (11) that run through the setting on the casing, its characterized in that: a first arc striking piece (4) is arranged in the shell opposite to the movable contact piece, a second arc striking piece (5) is arranged opposite to the static contact piece, and an arc striking channel (6) communicated with the first through groove is formed between the first arc striking piece and the second arc striking piece;
an arc striking part (51) and a second through groove (52) are arranged on the second arc striking plate and opposite to the lower end of the static contact plate;
the second arc striking piece comprises an arc guiding piece (53) and a blocking piece (54), the arc guiding piece is connected with the blocking piece through an arc piece (55), and the arc striking part and the second through groove are arranged on the arc piece.
2. A circuit breaker according to claim 1, wherein: an annular bulge (12) is arranged in the shell, an air cavity (121) is formed in the annular bulge, a static contact (31) is arranged on the static contact, and the air cavity and the static contact are arranged oppositely.
3. A circuit breaker according to claim 1, wherein: the arc-shaped piece faces the fixed contact.
4. A circuit breaker according to claim 1, wherein: a first arc striking channel (61) is formed between the blocking piece and the arc guiding piece, a second arc striking channel (62) is formed between the blocking piece and the first arc striking piece, and the blocking piece and the front end of the arc guiding piece are oppositely arranged and used for blocking gas back spraying.
5. A circuit breaker according to claim 1, wherein: a buffer cavity (13) is further arranged between the arc striking channel and the first through groove, and an air filtering device (7) is arranged in the buffer cavity.
6. A circuit breaker according to claim 5, wherein: the air filtering device comprises a wavy main board (71), the main board divides the buffer cavity into a plurality of sub-buffer cavities (131), and a plurality of first through holes (711) communicated with the sub-buffer cavities are formed in the main board.
7. A circuit breaker according to claim 6, wherein: the buffer cavity comprises an inlet (132), and a second through hole (712) corresponding to the inlet is formed in the main board.
8. A circuit breaker according to claim 7, wherein: and a notch groove (41) is formed on the first arc striking plate relative to the inlet.
9. A circuit breaker according to claim 8, wherein: the arc ignition channel is connected with the buffer cavity through a long and narrow connecting channel (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110935231.1A CN113889384B (en) | 2021-08-16 | 2021-08-16 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110935231.1A CN113889384B (en) | 2021-08-16 | 2021-08-16 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113889384A CN113889384A (en) | 2022-01-04 |
| CN113889384B true CN113889384B (en) | 2022-05-10 |
Family
ID=79011111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110935231.1A Active CN113889384B (en) | 2021-08-16 | 2021-08-16 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113889384B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205081081U (en) * | 2015-11-04 | 2016-03-09 | 浙江科瑞普电气有限公司 | Miniature circuit breaker |
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008186643A (en) * | 2007-01-29 | 2008-08-14 | Fuji Electric Holdings Co Ltd | Circuit breaker |
| CN201562605U (en) * | 2009-12-10 | 2010-08-25 | 北京博顿电气有限公司 | Breaker arc extinguishing structure with arc barrier |
| CN202172052U (en) * | 2011-08-23 | 2012-03-21 | 德力西电气有限公司 | Static contact of breaker |
| CN202332641U (en) * | 2011-11-21 | 2012-07-11 | 浙江兆正机电有限公司 | Arc striking sheet of contactor |
| CN202651036U (en) * | 2012-07-16 | 2013-01-02 | 浙江天正电气股份有限公司 | Static contact member of circuit breaker |
| CN204558302U (en) * | 2015-04-28 | 2015-08-12 | 浙江丰源电器配件有限公司 | A kind of circuit breaker with efficient arc striking piece |
| CN205621691U (en) * | 2016-03-30 | 2016-10-05 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN208000887U (en) * | 2018-04-06 | 2018-10-23 | 环宇集团浙江高科股份有限公司 | A kind of high-breaking miniature breaker |
| CN208352246U (en) * | 2018-05-16 | 2019-01-08 | 德力西电气有限公司 | A kind of arc quenching system of miniature circuit breaker |
| CN209515597U (en) * | 2019-03-26 | 2019-10-18 | 浙江创奇电气有限公司 | A kind of breaker that striking effect is good |
| CN109920669A (en) * | 2019-04-10 | 2019-06-21 | 北京北元电器有限公司 | A kind of arc-control device and arc-suppressing method with monoblock type arc insulating cover |
| CN211238139U (en) * | 2019-10-18 | 2020-08-11 | 浙江亚泰电力科技有限公司 | Novel arc extinguishing structure of circuit breaker |
| CN212136386U (en) * | 2020-05-09 | 2020-12-11 | 温州凯信电气有限公司 | Arc extinguishing system of circuit breaker |
| CN211929420U (en) * | 2020-05-26 | 2020-11-13 | 哥伦电气有限公司 | Small-size residual current circuit breaker with narrow slit arc extinguishing structure |
| CN213042861U (en) * | 2020-08-19 | 2021-04-23 | 法泰电器（江苏）股份有限公司 | Arc striking device of circuit breaker |
-
2021
- 2021-08-16 CN CN202110935231.1A patent/CN113889384B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205081081U (en) * | 2015-11-04 | 2016-03-09 | 浙江科瑞普电气有限公司 | Miniature circuit breaker |
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113889384A (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5516568B2 (en) | Puffer type gas circuit breaker | |
| CN113889384B (en) | Circuit breaker | |
| CN215988642U (en) | Circuit breaker | |
| CN111720600A (en) | Pneumatic/safety valve for positive pressure explosion prevention | |
| CN213042861U (en) | Arc striking device of circuit breaker | |
| KR101605142B1 (en) | Gas isolated circuit breaker | |
| CN110957195B (en) | Contact arc extinguishing device of circuit breaker | |
| CN216084776U (en) | Arc extinguishing system and circuit breaker | |
| KR20090072578A (en) | Thermal chamber self-blast circuit breaker | |
| CN209496766U (en) | A kind of low-voltage movable disconnecting switch | |
| CN210272210U (en) | Circuit breaker with arc discharge function and shell thereof | |
| CN202523631U (en) | Circuit breaker arc extinguish chamber and static arc contact thereof | |
| CN202917419U (en) | Direct current breaker with double arc-isolating plates | |
| US2262516A (en) | Electric circuit breaker | |
| CN217306428U (en) | Keep off gas seal structure and circuit breaker | |
| CN212318888U (en) | Pneumatic/safety valve for positive pressure explosion prevention | |
| CN219534457U (en) | Arc extinguishing chamber | |
| CN213459607U (en) | Miniature circuit breaker capable of rapidly discharging arc | |
| CN217607613U (en) | Flame-proof type high-temperature-resistant three-phase asynchronous motor | |
| CN217983188U (en) | Circuit breaker | |
| CN203038821U (en) | Switch device with air exhaust structure | |
| CN220710228U (en) | Arc extinguishing system and circuit breaker | |
| CN108766828A (en) | One kind being used for high pressure SF6Breaker carries the spout of cylindrical projection | |
| CN107134395A (en) | A kind of arc-extinguishing chamber of circuit breaker sealing installation structure | |
| CN215183628U (en) | Arc extinguishing device of N-pole contact system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325600 No. 18, Sha Hung Road, North Bai Xiang Town, Yueqing, Wenzhou, Zhejiang. Patentee after: Zhejiang Chuangqi Electric Co.,Ltd. Address before: 325600 No. 18, Sha Hung Road, North Bai Xiang Town, Yueqing, Wenzhou, Zhejiang. Patentee before: ZHEJIANG CHUANGQI ELECTRIC Co.,Ltd. |