CN109119307B - Arc extinguishing system and circuit breaker with same - Google Patents
Arc extinguishing system and circuit breaker with same Download PDFInfo
- Publication number
- CN109119307B CN109119307B CN201811163528.5A CN201811163528A CN109119307B CN 109119307 B CN109119307 B CN 109119307B CN 201811163528 A CN201811163528 A CN 201811163528A CN 109119307 B CN109119307 B CN 109119307B
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- China
- Prior art keywords
- arc extinguishing
- moving contact
- fixed plate
- fixing
- extinguishing system
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Classifications
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- 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
The invention discloses an arc extinguishing system which comprises an arc extinguishing chamber, a moving contact and a fixed contact, wherein the moving contact can be contacted with or separated from the fixed contact, the arc extinguishing chamber comprises an insulating partition plate, a first fixing plate, a second fixing plate and a plurality of arc extinguishing grid plates, the first fixing plate and the second fixing plate are symmetrically arranged, the arc extinguishing grid plates are arranged between the first fixing plate and the second fixing plate, the insulating partition plate comprises a partition plate body, a notch which is convenient for the moving contact to extend into the arc extinguishing chamber is formed in the partition plate body, first isolation parts are arranged on two sides of the moving contact on the partition plate body, second isolation parts are arranged on two sides of the fixed contact on the partition plate body, and third isolation parts are arranged on the partition plate body. According to the invention, the moving contact is covered by arranging the first isolation part, the fixed contact is covered by arranging the second isolation part, and the moving contact and the lower part of the fixed contact are separated by arranging the third isolation part, so that the problem of short circuit caused by leakage of electric arc is avoided.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to an arc extinguishing system and a circuit breaker with the same.
Background
A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The circuit breaker is classified into a high voltage circuit breaker and a low voltage circuit breaker according to its use range. Currently, in a low-voltage circuit breaker, an arc extinguishing system thereof generally adopts a grid-type arc extinguishing chamber structure, however, the existing arc extinguishing system for the low-voltage circuit breaker has the problem of poor arc extinguishing effect and is extremely easy to cause a short circuit problem, thus, the problem needs to be solved urgently.
Disclosure of Invention
The invention aims to solve the problems that an arc extinguishing system and a circuit breaker with the same are poor in arc extinguishing effect and easy to generate short circuit in the existing arc extinguishing system for a low-voltage circuit breaker.
The invention aims at realizing the following technical scheme:
the utility model provides an arc extinguishing system, includes the explosion chamber, sets up in the moving contact of explosion chamber one side and set up in the moving contact of explosion chamber opposite side, the moving contact can with the moving contact or separation, the explosion chamber includes insulating barrier, first fixed plate, second fixed plate and a plurality of arc extinguishing bars piece, insulating barrier arranges along the horizontal direction, first fixed plate arranges along vertical direction, and its lower extreme is fixed in on insulating barrier's the up end, the second fixed plate arranges along vertical direction, and on its lower extreme is fixed in insulating barrier's up end, first fixed plate, second fixed plate symmetrical arrangement, a plurality of arc extinguishing bars pieces set up between first fixed plate, second fixed plate, insulating barrier includes the baffle body, it stretches into the notch in the explosion chamber to open the moving contact of being convenient for on the baffle body, and be located the first isolation portion of moving contact on the baffle body, be located the both sides of moving contact and be provided with on the baffle body and be used for covering the second isolation portion of moving contact, and be provided with on the baffle body with the isolation portion that is used for covering moving contact's lower part and third isolation portion that separates the moving contact.
As a preferable mode of the invention, the partition plate body is provided with an extension isolation part extending into the arc extinguishing chamber.
As a preferred aspect of the present invention, the extension insulating part is arranged in a vertical direction.
As a preferable scheme of the invention, the number of the extension isolation parts is 2, and the extension isolation parts are symmetrically distributed on two sides of the moving contact.
As a preferable mode of the present invention, the extension isolation portion, the first isolation portion, the second isolation portion, and the third isolation portion are integrally formed.
As a preferable scheme of the invention, a first fixing hole is formed in the first fixing plate, a first fixing block matched with the first fixing hole is arranged at one end of the arc extinguishing grid sheet, the first fixing block is connected with the first fixing hole in a plug-in mode, a second fixing hole is formed in the second fixing plate, a second fixing block matched with the second fixing hole is arranged at the other end of the arc extinguishing grid sheet, and the second fixing block is connected with the second fixing hole in a plug-in mode.
As a preferable scheme of the invention, the first fixing block, the second fixing block and the arc extinguishing grid sheet are of an integrated structure.
A circuit breaker comprising an arc extinguishing system as described above.
The invention has the beneficial effects that the movable contact is covered by the first isolation part, the fixed contact is covered by the second isolation part, and the movable contact and the lower part of the fixed contact are separated by the third isolation part, so that the problem of short circuit caused by arc leakage is avoided, and secondly, the insulating partition plate is matched with the first fixing plate and the second fixing plate to form a closed arc extinguishing cavity which is more beneficial to upward movement of gas, so that the arc extinguishing effect is enhanced.
Drawings
Fig. 1 is a schematic perspective view of an arc extinguishing system;
fig. 2 is a schematic perspective view of an arc extinguishing system at another view angle;
FIG. 3 is a schematic diagram of the structure of the insulating partition matched with the moving contact and the static contact;
fig. 4 is a schematic structural view of an insulating spacer.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not limiting thereof.
Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an arc extinguishing system; fig. 2 is a schematic perspective view of an arc extinguishing system at another view angle; FIG. 3 is a schematic diagram of the structure of the insulating partition matched with the moving contact and the static contact; fig. 4 is a schematic structural view of an insulating spacer.
In this embodiment, an arc extinguishing system comprises an arc extinguishing chamber, a moving contact 1 arranged at the rear side of the arc extinguishing chamber, and a fixed contact 2 arranged at the front side of the arc extinguishing chamber, wherein the moving contact 1 can be contacted with or separated from the fixed contact 2, the arc extinguishing chamber comprises an insulating partition plate 3, a first fixing plate 4, a second fixing plate 5 and a plurality of arc extinguishing grid sheets 6, the insulating partition plate 3 is arranged along the horizontal direction, the first fixing plate 4 is arranged along the vertical direction, the lower end of the first fixing plate 4 is fixed on the upper end face of the insulating partition plate 3, the second fixing plate 5 is arranged along the vertical direction, the lower end of the second fixing plate is fixed on the upper end face of the insulating partition plate 3, the first fixing plate 4 and the second fixing plate 5 are symmetrically arranged, the plurality of arc extinguishing grid sheets 6 are arranged between the first fixing plate 4 and the second fixing plate 5, a first fixing hole is arranged on the first fixing plate 4, the right end of the arc-extinguishing grating sheet 6 is provided with a first fixed block matched with a first fixed hole, the first fixed block is connected with the first fixed hole in an inserting way, the second fixed plate 5 is provided with a second fixed hole, the left end of the arc-extinguishing grating sheet 6 is provided with a second fixed block matched with the second fixed hole, the second fixed block is connected with the second fixed hole in an inserting way, the first fixed block, the second fixed block and the arc-extinguishing grating sheet 6 are of an integrated structure, the insulating partition plate 3 comprises a partition plate body 31, the partition plate body 31 is provided with a notch which is convenient for the moving contact 1 to extend into an arc-extinguishing chamber, the two sides of the partition plate body 31, which are positioned on the moving contact 1, are provided with first isolating parts 32 which are used for covering the moving contact 1, the two sides of the partition plate body 31, which are positioned on the fixed contact 2, are provided with second isolating parts 34 which are used for covering the moving contact 2, and be provided with the third isolation portion 35 that is used for keeping apart the lower part of moving contact 1 and the lower part of static contact 2 on the baffle body 31, still be provided with the extension isolation portion 33 that stretches into the explosion chamber on the baffle body 31, extension isolation portion 33 is arranged along vertical direction, and extension isolation portion 33 is 2, and the symmetric distribution is in moving contact 1 both sides, extension isolation portion 33, first isolation portion 32, second isolation portion 34, third isolation portion 35 are integrated into one piece structure.
According to the arc extinguishing system, the movable contact 1 is covered by the first isolation part 32, the fixed contact 2 is covered by the second isolation part 34, the movable contact 1 and the lower part of the fixed contact 2 are separated by the third isolation part 35, the problem of short circuit caused by electric arc leakage is avoided, and secondly, the insulating partition plate 3 is more beneficial to upward movement of gas due to the cooperation of the first fixing plate 4 and the second fixing plate 5, so that an arc extinguishing effect is enhanced, and in addition, the insulating partition plate 3 is tightly connected with the arc extinguishing chamber by the arrangement of the extending isolation part 33, so that an arc extinguishing cavity which is more beneficial to breaking an electric arc is formed, and the arc extinguishing effect is improved.
The embodiment also discloses a circuit breaker, comprising the arc extinguishing system.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims.
Claims (6)
1. The utility model provides an arc extinguishing system, includes explosion chamber, sets up in the moving contact of explosion chamber one side and sets up in the static contact of explosion chamber opposite side, the moving contact can with static contact or separation, its characterized in that: the explosion chamber includes insulating barrier, first fixed plate, second fixed plate and a plurality of arc-extinguishing bars piece, insulating barrier arranges along the horizontal direction, first fixed plate arranges along vertical direction, and its lower extreme is fixed in on insulating barrier's the up end, the second fixed plate arranges along vertical direction, and its lower extreme is fixed in on insulating barrier's the up end, first fixed plate, second fixed plate symmetrical arrangement, a plurality of arc-extinguishing bars piece set up between first fixed plate, second fixed plate, insulating barrier includes the baffle body, it stretches into the notch in the explosion chamber to open on the baffle body to be convenient for the moving contact, and is provided with the first isolated part that is used for covering the moving contact on the baffle body in the both sides of moving contact, be provided with the second isolated part that is used for covering the moving contact on the baffle body, and be provided with the lower part and the isolated third part of isolating the moving contact of isolating part, be provided with the extension portion that stretches into indoor extension, first, second, the isolated structure of first fixed plate, the airtight seal of first fixed plate and second.
2. An arc extinguishing system according to claim 1, characterized in that: the extension insulating portion is arranged in a vertical direction.
3. An arc extinguishing system according to claim 2, characterized in that: the number of the extension isolation parts is 2, and the extension isolation parts are symmetrically distributed on two sides of the moving contact.
4. An arc extinguishing system according to claim 1, characterized in that: the arc extinguishing grating is characterized in that a first fixing hole is formed in the first fixing plate, a first fixing block matched with the first fixing hole is arranged at one end of the arc extinguishing grating, the first fixing block is connected with the first fixing hole in a plug-in mode, a second fixing hole is formed in the second fixing plate, a second fixing block matched with the second fixing hole is arranged at the other end of the arc extinguishing grating, and the second fixing block is connected with the second fixing hole in a plug-in mode.
5. The arc extinguishing system of claim 4, wherein: the first fixing block, the second fixing block and the arc extinguishing grid sheet are of an integrated structure.
6. A circuit breaker, characterized in that: an arc extinguishing system comprising any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163528.5A CN109119307B (en) | 2018-09-30 | 2018-09-30 | Arc extinguishing system and circuit breaker with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163528.5A CN109119307B (en) | 2018-09-30 | 2018-09-30 | Arc extinguishing system and circuit breaker with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109119307A CN109119307A (en) | 2019-01-01 |
| CN109119307B true CN109119307B (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811163528.5A Active CN109119307B (en) | 2018-09-30 | 2018-09-30 | Arc extinguishing system and circuit breaker with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109119307B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3466318D1 (en) * | 1983-10-15 | 1987-10-22 | Licentia Gmbh | Quenching device for an automatic circuit breaker |
| KR100817120B1 (en) * | 2006-12-19 | 2008-03-27 | 엘에스산전 주식회사 | Circuit breaker |
| JP2010015724A (en) * | 2008-07-01 | 2010-01-21 | Kawamura Electric Inc | Arc extinguishing device of circuit breaker unit |
| DE102011089234A1 (en) * | 2010-12-21 | 2012-06-21 | Siemens Aktiengesellschaft | Electric arc extinguishing device for use in e.g. circuit breaker, has double guide rail with projection, which is arranged such that arc is extended to projection of rail and divided in two partial arcs conducted into arc arcing chambers |
| CN202549757U (en) * | 2012-05-17 | 2012-11-21 | 温州市新蓝天电器有限公司 | Circuit breaker |
| CN203250707U (en) * | 2013-03-21 | 2013-10-23 | 浙江正泰电器股份有限公司 | Grid arc-extinguishing chamber for low-voltage circuit breaker |
| CN205959824U (en) * | 2016-01-28 | 2017-02-15 | 浙江正泰电器股份有限公司 | Arcing chamber of breaker |
| CN107359068A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker of plastic casing with compound arc extinction performance |
| CN107799369A (en) * | 2017-11-30 | 2018-03-13 | 厦门理工学院 | The static contact component and arc quenching system of a kind of burn-out proof |
| CN207503900U (en) * | 2017-10-30 | 2018-06-15 | 浙江正泰电器股份有限公司 | Mold cased circuit breaker |
| CN207529897U (en) * | 2017-11-10 | 2018-06-22 | 白真文 | Electric arc separating mechanism and breaker of plastic casing |
-
2018
- 2018-09-30 CN CN201811163528.5A patent/CN109119307B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3466318D1 (en) * | 1983-10-15 | 1987-10-22 | Licentia Gmbh | Quenching device for an automatic circuit breaker |
| KR100817120B1 (en) * | 2006-12-19 | 2008-03-27 | 엘에스산전 주식회사 | Circuit breaker |
| JP2010015724A (en) * | 2008-07-01 | 2010-01-21 | Kawamura Electric Inc | Arc extinguishing device of circuit breaker unit |
| DE102011089234A1 (en) * | 2010-12-21 | 2012-06-21 | Siemens Aktiengesellschaft | Electric arc extinguishing device for use in e.g. circuit breaker, has double guide rail with projection, which is arranged such that arc is extended to projection of rail and divided in two partial arcs conducted into arc arcing chambers |
| CN202549757U (en) * | 2012-05-17 | 2012-11-21 | 温州市新蓝天电器有限公司 | Circuit breaker |
| CN203250707U (en) * | 2013-03-21 | 2013-10-23 | 浙江正泰电器股份有限公司 | Grid arc-extinguishing chamber for low-voltage circuit breaker |
| CN205959824U (en) * | 2016-01-28 | 2017-02-15 | 浙江正泰电器股份有限公司 | Arcing chamber of breaker |
| CN107359068A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of breaker of plastic casing with compound arc extinction performance |
| CN207503900U (en) * | 2017-10-30 | 2018-06-15 | 浙江正泰电器股份有限公司 | Mold cased circuit breaker |
| CN207529897U (en) * | 2017-11-10 | 2018-06-22 | 白真文 | Electric arc separating mechanism and breaker of plastic casing |
| CN107799369A (en) * | 2017-11-30 | 2018-03-13 | 厦门理工学院 | The static contact component and arc quenching system of a kind of burn-out proof |
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| Publication number | Publication date |
|---|---|
| CN109119307A (en) | 2019-01-01 |
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