CN108010769A - A kind of arc-extinguishing chamber of circuit breaker - Google Patents
A kind of arc-extinguishing chamber of circuit breaker Download PDFInfo
- Publication number
- CN108010769A CN108010769A CN201711466252.3A CN201711466252A CN108010769A CN 108010769 A CN108010769 A CN 108010769A CN 201711466252 A CN201711466252 A CN 201711466252A CN 108010769 A CN108010769 A CN 108010769A
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- CN
- China
- Prior art keywords
- arc
- fixed
- plate
- segment
- bottom plate
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
- H01H2009/365—Metal parts using U-shaped plates
Abstract
The invention discloses a kind of arc-extinguishing chamber of circuit breaker, including fixed plate and several arc extinguishing grid pieces, the fixed plate includes bottom plate and two symmetrical side plates for being arranged at bottom plate opposite end, on the bottom plate several exhaust passages are evenly distributed with along the length direction of bottom plate, on the side plate some groups of fixed mechanisms are evenly distributed with along the length direction of side plate, the exhaust passage and fixed mechanism stagger setting successively, the fixed mechanism includes the equally distributed mounting hole of width severaled along side plate, two of the arc extinguishing grid pieces are respectively equipped with the fixation a being inwardly recessed right angle on opposite side, corresponding to the fixed block being equipped with the position of mounting hole and mounting hole matches on the fixed right angle, one end of the fixed block is through corresponding mounting hole.Reasonable in design, good impact resistant effect of the invention, good heat dissipation effect can effectively improve arc extinguishing efficiency, and when use can effectively improve the job stability of breaker.
Description
Technical field
The present invention relates to breaker technical field, and in particular to a kind of arc-extinguishing chamber of circuit breaker.
Background technology
Electric arc is a kind of gas discharge phenomenon, is that electric current passes through moment spark caused by certain medium (such as air).
In daily life, when the electric current passed through exceeded breaker setting limiting value after, breaker will automatic interruptive current, break
After contact on the device of road disconnects, electric arc will be lit, since electric arc can not only damage device line, or even can also shadow
Ring personal safety.Therefore, arc extinguishing is one of important application for breaker.At present, arc-suppressing method commonly used in the prior art
Including mechanical arc extinguishing method, magnetic quenching method, narrow slit arc extinguishing method and grid arc extinguishing method.
Wherein grid arc extinguishing method is mainly used in ac electric apparatus, and when the contact of breaker separates, the electric arc of generation exists
Be pushed under the action of electric power in one group of metal grid and be divided into several sections, metal grid insulated from each other it is every it is a piece of all
As soon as equivalent to an electrode, therefore there are many anode and cathode voltage crests.For alternating current arc, at nearly cathode, in electric arc zero passage just
150V~250V method dielectric strength occurs, electric arc can not be continued to and is extinguished.
The arc-chutes that grid arc extinguishing method is used in the prior art generally all include a box for being divided into several areas, are divided
Separated between the several areas opened with partition plate (arc extinguishing grid pieces), while the entrance side of box is set to open wide, in order to which electric arc is led
Entrance, meanwhile, in order to ensure the resistance of whole breaker and service life, it will usually on the rear wall or side wall of arc-chutes
Exhausting-gas hole is set in order to eliminate electric arc as soon as possible.At present, the partition plate in original breaker is more by the way of direct nesting
It is arranged in box, such set make it that shock resistance effect is poor inside arc-chutes, seriously affects the service life of arc-chutes,
Meanwhile arc-chutes of the prior art, in order to strengthen the structural strength of arc-chutes, the venthole of setting is relatively small, so that
Electric arc is not easy to spray, and then the covert arc extinguishing efficiency for extending arc-chutes, have impact on the resistance and service life of whole breaker.
The content of the invention
The present invention is to solve the above-mentioned problems, there is provided a kind of reasonable in design, good impact resistant effect, heat dissipation effect
It is good, arc extinguishing efficiency can be effectively improved, when use can effectively improve the arc-extinguishing chamber of circuit breaker of the job stability of breaker.
The present invention adopts the following technical scheme that：
A kind of arc-extinguishing chamber of circuit breaker, including the arc extinguishing grid pieces being arranged in fixed plate that fixed plate is parallel with several, institute
Stating fixed plate includes the symmetrical side plates for being arranged at bottom plate opposite end of bottom plate and two, along the length of bottom plate on the bottom plate
Direction is evenly distributed with several exhaust passages, and being evenly distributed with some groups along the length direction of side plate on the side plate fixes
Mechanism, stagger setting, the fixed mechanism include the width severaled along side plate successively for the exhaust passage and fixed mechanism
The equally distributed mounting hole in direction, two of the arc extinguishing grid pieces are straight with respect to a fixation being inwardly recessed is respectively equipped with sides
Angle, corresponds on the fixed right angle at the position of mounting hole and is equipped with and fixed block that mounting hole matches, and the one of the fixed block
Hold through corresponding mounting hole.
As a preferred technical solution of the present invention, the side away from bottom plate is lacked equipped with striking on the arc extinguishing grid pieces
Mouthful, the striking notch includes the first segment and second segment being mutually linked, and the first segment is along the direction away from second segment
The structure expanded to external arc, the second segment is "U" shaped structure, the center line of the first segment and the center line of second segment
Center line with arc extinguishing grid pieces overlaps.
As a preferred technical solution of the present invention, the rectangular cross-section structure of the exhaust passage, and the exhaust
The cross-sectional length of passage is the 2/3~3/4 of baseplate width.
As a preferred technical solution of the present invention, the madial wall of the exhaust passage is equipped with one layer of insulating strength
Layer, the side away from arc extinguishing grid pieces is the structure along the center line of insulating strength layer to contract on the insulating strength layer.
As a preferred technical solution of the present invention, the quantity of the mounting hole described in every group on fixed mechanism is 3.
The beneficial effects of the invention are as follows：
1st, the present invention is reasonable in design, by fixed block and mounting hole between the arc extinguishing grid pieces and fixed plate that are provided with
It is in clamping connection in together, can greatly strengthening the shock resistance effect of arc extinguishing grid pieces compared with the prior art, when use also can
Strengthen the job stability of breaker；Arc extinguishing grid pieces are set using centrosymmetric mode at the same time so that the assembling of arc extinguishing grid pieces
It is more convenient；
2nd, exhaust passage section of the invention is sets rectangular configuration, and to be arranged to bottom plate wide for the cross-sectional length of exhaust passage
The 2/3~3/4 of degree, it is such to set so that the indoor electric arc of arc extinguishing is more prone to spray, so as to improve the arc extinguishing effect of arc-chutes
Rate, extends the service life of whole breaker.
3rd, the striking notch that the present invention is set includes the first segment and second segment being mutually linked, and first segment is arranged to outside
The horn-like structure of expansion, second segment are arranged to "U" shaped structure, and wherein first segment can strengthen suction of the arc-chutes to electric arc
Power, reduces resistance when electric arc enters arc-chutes, so as to save the suction arcs set in the prior art on arc-chutes, reduces
The production technology and production cost of arc-chutes；And second segment can then play the role of electric arc elongation, to improve arc-chutes
Arc extinguishing efficiency；The striking notch set at the same time takes while guaranteeing and playing preferable striking and stretching electric arc effect to go out
The area of arc grid is smaller, so as to inversely increase the real area of arc extinguishing grid pieces, improves the heat dissipation effect of arc-chutes；
4th, the insulating strength layer that the present invention is set can effectively stop that electric arc is swum using the setting to centerline shrinkage cavity structure
From the return path of metal ion in steam, electric arc is prevented to be put back into arc-chutes again after the exhaust passage discharge on arc-chutes
It is interior, so as to be effectively reduced the density of metallic vapour in arc-chutes, improve dielectric strength.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of arc-extinguishing chamber of circuit breaker of the present invention；
Fig. 2 is the dimensional structure diagram of fixed plate of the present invention；
Fig. 3 is the front view of arc extinguishing grid pieces of the present invention；
Fig. 4 is the dimensional structure diagram of arc extinguishing grid pieces of the present invention；
Fig. 5 is the schematic cross-section of insulating strength layer of the present invention；
Symbol description in figure：
Arc extinguishing grid pieces 1, bottom plate 2, side plate 3, exhaust passage 4, mounting hole 5, fixed right angle 6, fixed block 7, striking notch 8,
First segment 9, second segment 10, insulating strength layer 11.
Embodiment
Presently in connection with attached drawing, the present invention will be described in further detail.
As shown in Figures 1 to 5, a kind of arc-extinguishing chamber of circuit breaker, including fixed plate it is parallel with several be arranged at fixed plate
Interior arc extinguishing grid pieces 1, the fixed plate includes bottom plate 2 and two symmetrical side plates 3 for being arranged at 2 opposite end of bottom plate, described
Several exhaust passages 4 are evenly distributed with along the length direction of bottom plate 2, on bottom plate 2 along the length of side plate 3 on the side plate 3
Degree direction is evenly distributed with some groups of fixed mechanisms, the exhaust passage 4 and fixed mechanism 2 direction of bottom plate projection either
Stagger setting successively is projected as on 3 direction of side plate, it is equal along the width of side plate 3 that the fixed mechanism includes several
The mounting hole 5 of even distribution, two of the arc extinguishing grid pieces 1 are respectively equipped with the fixation a being inwardly recessed right angle 6 on sides relatively,
Correspond on the fixed right angle 6 at the position of mounting hole 5 and be equipped with the fixed block 7 to match with mounting hole 5, the fixed block 7
One end is through corresponding mounting hole 5 so that arc extinguishing grid pieces 1 are in clamping connection between two side plates 3；
The side away from bottom plate 2 is equipped with striking notch 8 on the arc extinguishing grid pieces 1, and the striking notch 8 includes being mutually linked
First segment 9 and second segment 10, the first segment 9 is to be expanded along the direction away from second segment 10 to external arc and in horn-like
Structure, suction of the arc extinguishing grid pieces 1 to electric arc can be improved using horn-like structure setting, reduced when electric arc enters arc-chutes
Resistance, so as to save the suction arcs being arranged in the prior art on arc-chutes, reduces production technology and the production of arc-chutes
Cost；The second segment 10 is "U" shaped structure, can play the role of elongation to electric arc using "U" shaped structure setting, with
Improve the arc extinguishing efficiency of arc-chutes, the center of the center line of the first segment 9 and the center line of second segment 10 with arc extinguishing grid pieces 1
Line overlaps so that line symmetrical structure centered on arc extinguishing grid pieces 1, so that the assembling of whole arc-chutes is more convenient；
The rectangular cross-section structure of the exhaust passage 4, and the length in the section of the exhaust passage 4 is 2 width of bottom plate
2/3, set using such so that the indoor electric arc of arc extinguishing is more prone to spray, so as to improve the arc extinguishing efficiency of arc-chutes,
Extend the service life of whole breaker；
The madial wall of the exhaust passage 4 is equipped with one layer of insulating strength layer that can strengthen 2 overall construction intensity of bottom plate
11, the side away from arc extinguishing grid pieces 1 is along the center line of insulating strength layer 11 to contract on the insulating strength layer 11
Structure, can effectively stop that electric arc dissociates the return path of metal ion in steam using the setting to centerline shrinkage cavity structure,
Electric arc is prevented to be put back into again in arc-chutes after the exhaust passage discharge on arc-chutes, so as to be effectively reduced in arc-chutes golden
Belong to the density of steam, improve dielectric strength；
The quantity of mounting hole 5 described in every group on fixed mechanism is 3, in practical applications, additionally it is possible to according to actual need
Mounting hole 5 is arranged to other quantity, to adapt to the requirement of different size of arc-chutes.
Finally it should be noted that：These embodiments are merely to illustrate the present invention and do not limit the scope of the invention.In addition,
To those of ordinary skill in the art, other various forms of changes or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change thus amplified out
Among moving still in protection scope of the present invention.
Claims (5)
1. a kind of arc-extinguishing chamber of circuit breaker, including the arc extinguishing grid pieces (1) being arranged in fixed plate that fixed plate is parallel with several, its
It is characterized in that：The fixed plate includes bottom plate (2) and two symmetrical side plates (3) for being arranged at bottom plate (2) opposite end, described
Several exhaust passages (4) are evenly distributed with along the length direction of bottom plate (2), on bottom plate (2) along side on the side plate (3)
The length direction of plate (3) is evenly distributed with some groups of fixed mechanisms, and the exhaust passage (4) and fixed mechanism mutually stagger successively
Set, the fixed mechanism includes the equally distributed mounting hole of width (5) severaled along side plate (3), the arc extinguishing
Two of grid (1) are respectively equipped with the fixation a being inwardly recessed right angle (6), the fixed right angle (6) on pair on opposite side
Should be equipped with the position of mounting hole (5) and fixed block (7) that mounting hole (5) matches, one end of the fixed block (7) through
Corresponding mounting hole (5).
A kind of 2. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：The bottom of away from the arc extinguishing grid pieces (1)
The side of plate (2) is equipped with striking notch (8), and the striking notch (8) includes the first segment (9) and second segment being mutually linked
(10), the first segment (9) is along the structure expanded to external arc of direction away from second segment (10), the second segment (10)
For "U" shaped structure, the center of the center line of the first segment (9) and the center line of second segment (10) with arc extinguishing grid pieces (1)
Line overlaps.
A kind of 3. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：The section of the exhaust passage (4) is
Rectangular configuration, and the length in the section of the exhaust passage (4) is the 2/3~3/4 of the width of bottom plate.
A kind of 4. arc-extinguishing chamber of circuit breaker according to claim 1 or 3, it is characterised in that：The inner side of the exhaust passage (4)
Wall is equipped with one layer of insulating strength layer (11), and the side away from arc extinguishing grid pieces (1) is along exhausted on the insulating strength layer (11)
Structure of the center line of edge enhancement layer (11) to contract.
A kind of 5. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：Fixation described in every group on fixed mechanism
The quantity in hole (5) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466252.3A CN108010769A (en) | 2017-12-28 | 2017-12-28 | A kind of arc-extinguishing chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466252.3A CN108010769A (en) | 2017-12-28 | 2017-12-28 | A kind of arc-extinguishing chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108010769A true CN108010769A (en) | 2018-05-08 |
Family
ID=62048950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711466252.3A Pending CN108010769A (en) | 2017-12-28 | 2017-12-28 | A kind of arc-extinguishing chamber of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108010769A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137049A (en) * | 2019-06-27 | 2019-08-16 | 浙江人民电器有限公司 | A kind of modularization arc-control device and a kind of breaker |
| CN111243886A (en) * | 2020-02-24 | 2020-06-05 | 蚌埠普源电气科技有限公司 | Arc extinguish chamber and circuit breaker thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877321U (en) * | 2010-11-29 | 2011-06-22 | 西安交通大学 | Arc extinguishing device for improving on-off performance of low-voltage electric apparatus |
| CN203013660U (en) * | 2013-01-09 | 2013-06-19 | 浙江天正电气股份有限公司 | Miniature breaker and novel explosion chamber |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN204257457U (en) * | 2014-11-13 | 2015-04-08 | 浙江正泰电器股份有限公司 | Breaker arc extinguishing mechanism |
| CN106252127A (en) * | 2016-09-30 | 2016-12-21 | 江苏洛凯机电股份有限公司 | Low pressure all-purpose arc-extinguishing chamber of 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 |
| CN206022153U (en) * | 2016-09-27 | 2017-03-15 | 浙江合兴电工有限公司 | A kind of arc quenching chamber structure |
| CN207587575U (en) * | 2017-12-28 | 2018-07-06 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
-
2017
- 2017-12-28 CN CN201711466252.3A patent/CN108010769A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877321U (en) * | 2010-11-29 | 2011-06-22 | 西安交通大学 | Arc extinguishing device for improving on-off performance of low-voltage electric apparatus |
| CN203013660U (en) * | 2013-01-09 | 2013-06-19 | 浙江天正电气股份有限公司 | Miniature breaker and novel explosion chamber |
| CN104091734A (en) * | 2014-07-16 | 2014-10-08 | 德力西电气有限公司 | Arc-extinguishing device of breaker |
| CN204257457U (en) * | 2014-11-13 | 2015-04-08 | 浙江正泰电器股份有限公司 | Breaker arc extinguishing mechanism |
| CN205959824U (en) * | 2016-01-28 | 2017-02-15 | 浙江正泰电器股份有限公司 | Arcing chamber of breaker |
| CN206022153U (en) * | 2016-09-27 | 2017-03-15 | 浙江合兴电工有限公司 | A kind of arc quenching chamber structure |
| CN106252127A (en) * | 2016-09-30 | 2016-12-21 | 江苏洛凯机电股份有限公司 | Low pressure all-purpose arc-extinguishing chamber of circuit breaker |
| CN207587575U (en) * | 2017-12-28 | 2018-07-06 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137049A (en) * | 2019-06-27 | 2019-08-16 | 浙江人民电器有限公司 | A kind of modularization arc-control device and a kind of breaker |
| CN110137049B (en) * | 2019-06-27 | 2024-03-19 | 浙江人民电器有限公司 | Modularized arc extinguishing device and breaker |
| CN111243886A (en) * | 2020-02-24 | 2020-06-05 | 蚌埠普源电气科技有限公司 | Arc extinguish chamber and circuit breaker thereof |
| CN111243886B (en) * | 2020-02-24 | 2022-04-22 | 余永利 | Arc extinguish chamber and circuit breaker thereof |
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