CN207587575U - A kind of arc-extinguishing chamber of circuit breaker - Google Patents
A kind of arc-extinguishing chamber of circuit breaker Download PDFInfo
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- CN207587575U CN207587575U CN201721882481.9U CN201721882481U CN207587575U CN 207587575 U CN207587575 U CN 207587575U CN 201721882481 U CN201721882481 U CN 201721882481U CN 207587575 U CN207587575 U CN 207587575U
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Abstract
The utility model 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 set to 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 several 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 several equally distributed mounting holes of width direction along side plate, two of the arc extinguishing grid pieces are respectively equipped with a fixation right angle being inwardly recessed on opposite side, corresponding to the fixed block being equipped at 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.The structure design of the utility model is reasonable, good impact resistant effect, 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 utility model is related to breaker technical fields, 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 by electric current be more than breaker set limiting value after, breaker will automatic interruptive current, break
After contact on the device of road disconnects, electric arc just can 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 per it is a piece of all
As soon as an electrode is equivalent to, therefore there are many anode and cathode voltage crests.For alternating current arc, at nearly cathode, in electric arc zero passage just
It will appear 150V~250V method dielectric strength, make electric arc that can not continue to and extinguish.
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
It is separated between the several areas opened with partition board (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 entire breaker and service life, it will usually on the rear wall or side wall of arc-chutes
Gas vent is set in order to eliminate electric arc as soon as possible.At present, the partition board in original breaker is mostly by the way of direct nesting
It being set in box, such setting so 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 enhance 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, affects the resistance and service life of entire breaker.
Utility model content
The utility model to solve the above-mentioned problems, provides a kind of reasonable in design, good impact resistant effect, heat dissipation effect
Fruit is good, can effectively improve arc extinguishing efficiency, and when use can effectively improve the arc-extinguishing chamber of circuit breaker of the job stability of breaker.
The utility model adopts the following technical solution：
A kind of arc-extinguishing chamber of circuit breaker, including the fixed plate arc extinguishing grid pieces that are set to fixed plate in parallel with several, institute
It states fixed plate and includes the symmetrical side plates for being set to 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 several groups along the length direction of side plate on the side plate fixes
Stagger setting, the fixed mechanism include several width along side plate successively for mechanism, 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 on 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
It holds through corresponding mounting hole.
As a kind of optimal technical scheme of the utility model, the side far from bottom plate is equipped with striking on the arc extinguishing grid pieces
Notch, the striking notch include the first segment and second segment that are mutually linked, and the first segment is along the side far from second segment
To the structure expanded to external arc, the second segment is "U" shaped structure, the center line of the first segment and the center of second segment
Line overlaps with the center line of arc extinguishing grid pieces.
As a kind of optimal technical scheme of the utility model, the rectangular cross-section structure of the exhaust passage, and it is described
The cross-sectional length of exhaust passage is the 2/3~3/4 of baseplate width.
As a kind of optimal technical scheme of the utility model, the madial wall of the exhaust passage is equipped with one layer of insulation and adds
Strong layer, on the insulating strength layer side far from arc extinguishing grid pieces be along insulating strength layer knot from center line to contract
Structure.
As a kind of optimal technical scheme of the utility model, the quantity of the mounting hole described in every group on fixed mechanism is 3
It is a.
The beneficial effects of the utility model are：
1st, the structure design of the utility model is reasonable, by fixed block and admittedly between the arc extinguishing grid pieces and fixed plate that are provided with
Determine hole to be in clamping connection in together, can greatly enhancing the shock resistance effect of arc extinguishing grid pieces compared with the prior art, during use
The job stability of breaker can be enhanced；Arc extinguishing grid pieces are set using centrosymmetric mode simultaneously so that arc extinguishing grid pieces
It assembles more convenient；
2nd, the exhaust passage section of the utility model is setting rectangular configuration, and the cross-sectional length of exhaust passage is set as bottom
The 2/3~3/4 of plate width, such setting is so that the indoor electric arc of arc extinguishing is more prone to spray, so as to improve going out for arc-chutes
Arc efficiency extends the service life of entire breaker.
3rd, the striking notch of the utility model setting includes the first segment and second segment that are mutually linked, and first segment is set as
The horn-like structure expanded outwardly, second segment are set as "U" shaped structure, and wherein first segment can enhance arc-chutes to electric arc
Suction reduces resistance when electric arc enters arc-chutes, so as to save the suction arcs set on arc-chutes in the prior art, drop
The production technology and production cost of low arc-chutes；And second segment can then play the role of electric arc elongation, to improve arc-chutes
Arc extinguishing efficiency；The striking notch of setting occupies while guaranteeing and playing preferable striking and stretching electric arc effect simultaneously
The area of arc extinguishing grid pieces 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 of the utility model setting, which is used to the setting of centerline shrinkage cavity structure, can effectively stop electricity
Arc dissociates the return path of metal ion in steam, and electric arc is prevented to be put back into again after the exhaust passage discharge on arc-chutes and is gone out
In arc chamber, so as to be effectively reduced the density of metallic vapour in arc-chutes, dielectric strength is improved.
Description of the drawings
Fig. 1 is a kind of dimensional structure diagram of arc-extinguishing chamber of circuit breaker of the utility model；
Fig. 2 is the dimensional structure diagram of the utility model fixed plate；
Fig. 3 is the front view of the utility model arc extinguishing grid pieces；
Fig. 4 is the dimensional structure diagram of the utility model arc extinguishing grid pieces；
Fig. 5 is the schematic cross-section of the utility model insulating strength layer；
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.
Specific embodiment
Presently in connection with attached drawing, the present invention is further described in 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 set to fixed plate
Interior arc extinguishing grid pieces 1, the fixed plate includes bottom plate 2 and two symmetrical side plates 3 for being set to 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 be evenly distributed with several 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 direction of side plate 3 that the fixed mechanism includes several
The mounting hole 5 of even distribution is respectively equipped with a fixation right angle 6 being inwardly recessed on two of the arc extinguishing grid pieces 1 opposite sides,
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 far 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 be to be expanded along the direction far 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 set 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 entire 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, using it is such setting so that the indoor electric arc of arc extinguishing be more prone to spray, so as to improve the arc extinguishing efficiency of arc-chutes,
Extend the service life of entire breaker；
The madial wall of the exhaust passage 4 is equipped with one layer of insulating strength layer that can enhance 2 overall construction intensity of bottom plate
11, the side far from arc extinguishing grid pieces 1 is the center line along 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 arc-chutes again after the exhaust passage discharge on arc-chutes, it is golden so as to be effectively reduced in arc-chutes
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 practical need
Mounting hole 5 is set as 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 model of the utility model without limiting the utility model
It encloses.In addition, it to those of ordinary skill in the art, can also make on the basis of the above description other various forms of
Variation changes.There is no necessity and possibility to exhaust all the enbodiments.And it thus amplifies out obvious
Among changing or changing still in the scope of protection of the utility model.
Claims (5)
1. a kind of arc-extinguishing chamber of circuit breaker, including the fixed plate arc extinguishing grid pieces (1) that are set to fixed plate in parallel with several,
It is characterized in that：The fixed plate includes bottom plate (2) and two symmetrical side plates (3) for being set to 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 several groups of fixed mechanisms, and the exhaust passage (4) and fixed mechanism are mutually staggered successively
Setting, the fixed mechanism include several along the equally distributed mounting hole of width direction (5) of side plate (3), the arc extinguishing
Two of grid (1) are respectively equipped with a fixation right angle (6) being inwardly recessed, the fixed right angle (6) on pair on opposite side
Should be equipped at 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).
2. a kind of arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：The bottom of far 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) being mutually linked and second segment
(10), the first segment (9) is along the structure expanded to external arc of direction far 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.
3. a kind of 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 2/3~3/4 of the width that the length in the section of the exhaust passage (4) is bottom plate.
4. a kind of arc-extinguishing chamber of circuit breaker according to claim 1 or 3, it is characterised in that：The inside of the exhaust passage (4)
Wall is equipped with one layer of insulating strength layer (11), and the side far from arc extinguishing grid pieces (1) is along exhausted on the insulating strength layer (11)
The center line of edge enhancement layer (11) is to the structure of contract.
5. a kind of 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 |
|---|---|---|---|
| CN201721882481.9U CN207587575U (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 |
|---|---|---|---|
| CN201721882481.9U CN207587575U (en) | 2017-12-28 | 2017-12-28 | A kind of arc-extinguishing chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587575U true CN207587575U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721882481.9U Active CN207587575U (en) | 2017-12-28 | 2017-12-28 | A kind of arc-extinguishing chamber of circuit breaker |
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| CN (1) | CN207587575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010769A (en) * | 2017-12-28 | 2018-05-08 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
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2017
- 2017-12-28 CN CN201721882481.9U patent/CN207587575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010769A (en) * | 2017-12-28 | 2018-05-08 | 加西亚电子电器股份有限公司 | A kind of arc-extinguishing chamber of circuit breaker |
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