CN2743961Y - Arc extinguishing device for circuit breaker - Google Patents
Arc extinguishing device for circuit breaker Download PDFInfo
- Publication number
- CN2743961Y CN2743961Y CN 200420108790 CN200420108790U CN2743961Y CN 2743961 Y CN2743961 Y CN 2743961Y CN 200420108790 CN200420108790 CN 200420108790 CN 200420108790 U CN200420108790 U CN 200420108790U CN 2743961 Y CN2743961 Y CN 2743961Y
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- Prior art keywords
- arc
- arc extinguishing
- control device
- circuit breaker
- shielding part
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Abstract
The utility model relates to an arc extinguishing device for a circuit breaker. The utility model comprises a left arc separating lateral wall 1, a right arc separating lateral wall 1, an arc extinguishing grid slice 2 arranged between the left and right arc separating lateral walls 1, a pair of screening members 3 which are respectively positioned on the left and right arc separating lateral walls 1, and an arc extinguishing chamber 4 formed by the space formed by the arc extinguishing grid slice 2. The utility model is characterized in that the pair of screening members 3 cling to the inner sides of the left and right arc separating lateral walls 1 and cover the end part of the arc extinguishing grid slice 2. The utility model has the advantages that the structure is simple, the installation is convenient and reliable, the utility model solves the problem of insulation between layers of the arc extinguishing grid slice 2 and prevents back breakdown of an electric arc, and the service life of a circuit breaker is extended.
Description
Technical field
The utility model relates to a kind of arc-control device, is specifically related to the arc-control device of circuit breaker.
Background technology
Existing circuit breaker generally all comprises parts such as arc-control device, trip gear, contact system and operating mechanism.When separating, the circuit breaker dynamic/static contact can produce electric arc, because the route of the contact arm of moving contact motion is in the cavity volume of arc extinguishing grid pieces, so electric arc will enter in the arc control device in production process, by arc extinguishing grid pieces electric arc is introduced between the grid sheet, ARC CUTTING is become the short arc of polyphone, electric arc is attenuated and improve arc drop fast, thereby reach the effect of arc extinguishing.
The applicant finds through test, when the circuit breaker short circuit disjunction, dynamic/static contact scold out generation electric arc, after electric arc produces the arc control device of going forward side by side, electric arc can be returned after running into the left and right sides sidewall of arc control device and arc extinguishing grid pieces in bounce-back, and the arcing gas of these high temperature will reduce the dielectric strength of institute's contact area; Simultaneously, after electric arc entered arc control device, arc voltage can sharply raise, and will produce electric arc punch-through behind in the zone of electric arc contact like this, caused producing again between ruined insulating barrier new electric arc.The behind punch-through of this electric arc will make the voltage of electric arc reduce, and electric current increases, and make the time lengthening that electric arc exists, thereby the ability of circuit breaker limit disjunction is reduced.
Document CN1304149A has described a kind of electric breaker electrode of the arc control device with dielectric barrier, and this horizontal dielectric barrier is arranged to laterally place between the trigger device of separation member and open position.This dielectric barrier is made by aerogenesis or aerogenesis material seldom not, and this dielectric barrier is arranged to make along the width of the arc control device opening of measuring perpendicular to vertical midplane near near the width that is significantly less than the last striking angle-shaped piece the striking angle-shaped piece, even the bottom of this dielectric barrier can be whole remove, be beneficial to electric arc and enter arc control device.This dielectric barrier by symmetrical placement in arc control device, purpose be control in the arc control device pressure balance and elongate electric arc, thereby improved arc voltage, to reach the effect that no longer triggers new electric arc after the electric arc zero passage.The another one effect is the electric puncture that can prevent between arc extinguishing grid pieces and the moving contact.Its shortcoming is: during the electric arc starting the arc, Arc Temperature can be very high, the highlyest may reach 6000K, easily scaling loss arc extinguishing grid pieces surface; Because not shielding between arc-chute lamella and the layer, thus for the arc-chute lamella and layer between insulation and arc erosion and electric arc do not puncture behind and play a very good protection.
Document US 6248970B1 has described a kind of end that has cavity and has emitted, and this end emits by gas exhausted material to be formed, and covers in the grid sheet foot position of arc extinguishing grid pieces, be beneficial to quick arc extinguishing and prevent arc extinguishing grid pieces and moving contact between electric puncture takes place.It has solved first kind of above-mentioned shortcoming, and the insulation between unresolved layer and the layer and the behind punch-through of electric arc, and the end of above-mentioned band cavity emits and is not connected firmly with arc extinguishing grid pieces and arc control device, it is unreliable to cause when arc control device pressure increases band cavity end to emit being connected with arc extinguishing grid pieces, the complex structure that the end of this band cavity emits is installed also inconvenient.
Summary of the invention
At the problem of above-mentioned existence, it is a kind of simple in structure, easy installation and reliable and can solve the insulation between arc-chute lamella and the layer and prevent that electric arc from puncturing behind that the utility model provides, thereby prolong the arc-control device of circuit breaker in the life-span of circuit breaker.
The purpose of this utility model reaches like this, a kind of arc-control device of circuit breaker, comprise left and right arc sidewall 1, the arc control device 4 that constitute in the arc extinguishing grid pieces 2 between the left and right arc sidewall 1, a pair of space that places shielding part 3 on the left and right arc sidewall 1 respectively, forms by arc extinguishing grid pieces 2, characteristics are: described a pair of shielding part 3 is close to the inboard of left and right arc sidewall 1 and is covered the end of arc extinguishing grid pieces 2.
Described a pair of shielding part 3 is useful on the grid film trap 31 that the end for arc extinguishing grid pieces 2 is bumped into towards cloth between a side of arc extinguishing grid pieces 2 separately at them.
Described a pair of this shielding part 3 is provided with and is used for the jockey that the inboard with left and right arc sidewall 1 fixes, this jockey comprises boss 32 and boss hole 11, boss 32 extends on shielding part 3, and boss hole 11 is opened on the left and right arc sidewall 1, boss hole 11 and 32 compatible joining of boss.
Described shielding part 3 is made by the aerogenesis insulating material.
Adopt technique scheme, the Rational structure of shielding part 3 can be under the prerequisite of the volume of guaranteeing not take arc control device 4, to insulation between the end of arc extinguishing grid pieces 2 and arc erosion and puncture behind and can play a good protection; Jockey has improved the be connected effect of shielding part 3 with left and right arc sidewall 1, and the end of arc extinguishing grid pieces 2 had takes solid effect, and the reliability of arc control device 4 is stablized; This structure is convenient to install and is more economical; Shielding part 3 adopts the aerogenesis insulating material, to adjust the pressure in the arc control device 4; Grid film trap 31 is set can discharge the interlayer air of arc extinguishing grid pieces 2, uses the layer of raising arc extinguishing grid pieces 2 and the class of insulation between the layer, improves arc extinction performance, has more reduced the behind punch-through of electric arc.
In conjunction with the accompanying drawings the specific embodiment that provides as non-limitative example of the present utility model is carried out following description, will make feature and advantage of the present utility model become more clear.
Accompanying drawing and description of drawings
Figure 1 shows that the utility model is lifted and prior art in the arc-control device structure chart of circuit breaker.
Figure 2 shows that an embodiment assembling assumption diagram of the arc-control device of the utility model circuit breaker.
Figure 3 shows that the utility model is used to constitute the structure chart of the arc extinguishing top flat 21 of arc extinguishing grid pieces 2, arc extinguishing intermediate 22, arc extinguishing egative film 23.
Figure 4 shows that another example structure figure of the arc-control device of the utility model circuit breaker.
Figure 5 shows that the another kind of structure chart of shielding part 3 of the arc-control device of the utility model circuit breaker.
Embodiment
Ask for an interview Fig. 2 and Fig. 3, an a pair of left side, right arc sidewall 1, cloth is inserted the prominent hole 12 of embedding between on it, arc extinguishing grid pieces 2 can be by arc extinguishing top flat 21, arc extinguishing intermediate 22, arc extinguishing egative film 23 constitutes jointly, also can save the arc extinguishing top, egative film 21,23, all constitute arc extinguishing grid pieces 2 by arc extinguishing intermediate 22, Fig. 2, Fig. 3 promptly belongs to this kind situation, one group respectively by one piece of arc extinguishing top flat 21 and arc extinguishing egative film 23 and be positioned at arc extinguishing top, egative film 21, the arc extinguishing grid pieces 2 that some arc extinguishing intermediates 22 between 23 constitute, spaces that form jointly by all arc extinguishing intermediates 22 and one piece of arc extinguishing top flat 21 and one piece of arc extinguishing egative film 23 and constitute arc control device 4.A pair of shielding part 3 posts side within a pair of left and right arc sidewall 1, cover the end of arc extinguishing top flat 21, arc extinguishing intermediate 22, arc extinguishing egative film 23, when the circuit breaker disjunction and when producing electric arc, because the shielding action of shielding part 3, electric arc is when entering arc control device 4, high-temperature gas can not corrode left and right arc sidewall 1, and the insulation property of arc control device 4 are improved.Preferentially, can on shielding part 3, form the grid film trap 31 of each interval, the gradient that grid film trap 31 is slightly certain, but do not get rid of level, spacing between the grid film trap 31 equates, the end 211 of a uppermost groove interpolation embedding arc extinguishing top flat 21 of grid film trap 31, the end 221 of all groove interpolation embedding arc extinguishing intermediates 22 at middle part, and the end 231 of a groove interpolation embedding arc extinguishing egative film 23 of bottommost.Because the end of each corresponding arc extinguishing grid pieces 2, the end 211 specifically, 221,231 all are inserted in grid film trap 31, make the air between arc extinguishing intermediate 22 ends and the adjacent layer be excluded out, and this shielding part 3 is for to be made by nylon or similar insulating material, so just improved the dielectric strength between arc extinguishing intermediate 22 and the adjacent layer greatly, when electric arc rebounds, cannot enter between the layer and layer of arc extinguishing intermediate 22, also just cannot destroy the insulation between arc extinguishing intermediate 22 and the adjacent layer, the outside of shielding part 3 has then prevented the electric arc behind punch-through between arc extinguishing intermediate 22 and the moving contact, stopped the erosion of electric arc to arc extinguishing intermediate 22, so just can effectively prevent arc extinguishing grid pieces 2 end 221 scaling loss and prevent restriking of electric arc.
Certainly, the structure of aforesaid this grid film trap 31 also can be arranged on as in the described end cap that has a cavity of document US 6248970B1, with prevent electric arc the layer of arc extinguishing intermediate 22 with layer between arc reignition.
Simultaneously, hang down at the upper and lower end of shielding part 3 one sides of the present utility model and to establish fixing lug boss 32, on left and right arc sidewall 1, offer boss hole 11, fixing lug boss 32 is protruded into boss hole 11, just a pair of shielding part 3 can be fitted with left and right arc sidewall 1 respectively.Certainly, fixing lug boss 32 can be processed into the tenon shape, and correspondingly boss hole 11 becomes mortise; Again, the position of fixing lug boss 32 and boss hole 11 can exchange, and for example fixing lug boss 32 is extended on left and right arc sidewall 1, and boss hole 11 then forms on the shielding part 3.For easy for installation, said fixing boss 32 also can be placed in the outside of shielding part 3, and boss hole 11 is placed in the relevant position of a pair of left and right arc sidewall 1, thereby conveniently fixes.
Between on a pair of left and right arc sidewall 1 the prominent hole 12 of the slotting embedding of cloth respectively with prominent 2111,2211,2311 insertings mutually of the slotting embedding of an arc extinguishing top flat 21, all arc extinguishing intermediates 22, an arc extinguishing egative film 23.
For the convenience of assembling and processing, said fixing boss 32 and boss hole 11 can be substituted as riveted joint or mode such as be threaded by habitual.
Ask for an interview Fig. 4 and in conjunction with Fig. 5, provided one and be used to take the utility model and be installed to the pedestal 5 that circuit breaker gets on, a pair of arc sidewall 1 in their end, default in slot 51 on the pedestal 5 along planting, and with screw 6 or similarly fixture fix.The arc control device that the present embodiment structure is constituted belong to the arc-control device structure that is used for frame-type circuit breaker, thereby have saved arc extinguishing top, egative film 21,23, and what replace is fixing deckle board 7.Offer the prominent hole 12 of slotting embedding of the prominent 2211 phase insertings of slotting embedding of the end 221 that supplies arc extinguishing intermediate 22 on a pair of arc sidewall 1.Illustrated the three socket embeddings hole 12 of dashing forward among the figure, this be because of the number of the slotting embedding of the end 221 of arc extinguishing intermediate 22 prominent 2211 definite, thereby row's number in the prominent hole 12 of slotting embedding is not constant, and specifically, it is to keep the relation of following in sb's footsteps with the number of inserting embedding prominent 2211.And, three socket embeddings are in respectively on the same horizontal line between the prominent hole 12, institute's spacing at interval is equal between the prominent hole 12 of every socket embedding, after being aided with shielding part 3, can avoid the end 221 of arc erosion arc sidewall 1 and arc extinguishing intermediate 22 equally, and in this embodiment, shielding part 3 can be provided with grid film trap 31 equally, so that the layer of arc extinguishing intermediate 22 and the air between the layer are discharged, use the layer insulation grade that improves arc extinguishing intermediate 22, improve arc extinction performance, more reduce the behind punch-through of electric arc.Though from Fig. 5, see the structure of shielding part 3 and structure shown in Figure 2 difference to some extent, but can not think this structure technical solutions of the utility model institute restricted portion that dissociated therefrom, because as described above, the structure of this embodiment and previous embodiment all is for fear of arc erosion arc sidewall 1 and arc extinguishing intermediate 22, and can discharge the layer of arc extinguishing intermediate 22 and the air between the layer by offering grid film trap 31, improve the class of insulation, reduce the phenomenon that electric arc punctures behind, from structure, the shielding part 3 of this two embodiment all is close to a left side, right arc sidewall 1 inboard also covers the end of arc extinguishing grid pieces 2.So shielding part 3 shown in Figure 5 has the effect of reaching the same goal by different routes in essence with shielding part 3 shown in Figure 2.
Claims (4)
1, a kind of arc-control device of circuit breaker, comprise left and right arc sidewall (1), the arc control device (4) that constitute in the arc extinguishing grid pieces (2) between the left and right arc sidewall (1), a pair of space that places shielding part (3) on the left and right arc sidewall (1) respectively, forms by arc extinguishing grid pieces (2), it is characterized in that described a pair of shielding part (3) is close to the inboard of left and right arc sidewall (1) and covers the end of arc extinguishing grid pieces (2).
2, the arc-control device of circuit breaker according to claim 1 is characterized in that described a pair of shielding part (3) is useful on the grid film trap (31) that is bumped into of end for arc extinguishing grid pieces (2) towards cloth between a side of arc extinguishing grid pieces (2) separately at them.
3, the arc-control device of circuit breaker according to claim 1 and 2, it is characterized in that described a pair of this shielding part (3) is provided with is used for the jockey that the inboard with left and right arc sidewall (1) fixes, this jockey comprises boss (32) and boss hole (11), boss (32) extends on shielding part (3), and boss hole (11) is opened on the left and right arc sidewall (1), boss hole (11) and compatible joining of boss (32).
4, the arc-control device of circuit breaker according to claim 1 and 2 is characterized in that described shielding part (3) made by the aerogenesis insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108790 CN2743961Y (en) | 2004-11-11 | 2004-11-11 | Arc extinguishing device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108790 CN2743961Y (en) | 2004-11-11 | 2004-11-11 | Arc extinguishing device for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743961Y true CN2743961Y (en) | 2005-11-30 |
Family
ID=35633978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420108790 Expired - Lifetime CN2743961Y (en) | 2004-11-11 | 2004-11-11 | Arc extinguishing device for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743961Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887812A (en) * | 2009-05-12 | 2010-11-17 | 苏州中菱电器制造有限公司 | Improved breaker arc-extinguish chamber |
| CN101416261B (en) * | 2006-03-29 | 2012-09-05 | 西门子公司 | Arc quenching device with an arc quenching material for a circuit breaker |
| CN102938354A (en) * | 2012-11-15 | 2013-02-20 | 西安交通大学 | Contact and arc extinction system of mold case circuit breaker |
| CN102138193B (en) * | 2008-06-27 | 2014-01-22 | 黑格电子股份有限公司 | Arc extinction cage |
| CN103871795A (en) * | 2014-03-19 | 2014-06-18 | 云南追梦科技有限公司 | Breaker arc extinguishing chamber and breaker with breaker arc extinguishing chamber |
| CN105097374A (en) * | 2014-05-16 | 2015-11-25 | 北京人民电器厂有限公司 | Breaker facilitating arc rapid movement and elongation |
| CN105304423A (en) * | 2014-06-20 | 2016-02-03 | 三菱电机株式会社 | Cicrcuit breaker |
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
| CN110998771A (en) * | 2017-07-18 | 2020-04-10 | 伊顿智能动力有限公司 | Electrical switching apparatus and debris barrier therefor |
-
2004
- 2004-11-11 CN CN 200420108790 patent/CN2743961Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416261B (en) * | 2006-03-29 | 2012-09-05 | 西门子公司 | Arc quenching device with an arc quenching material for a circuit breaker |
| CN102138193B (en) * | 2008-06-27 | 2014-01-22 | 黑格电子股份有限公司 | Arc extinction cage |
| CN101887812A (en) * | 2009-05-12 | 2010-11-17 | 苏州中菱电器制造有限公司 | Improved breaker arc-extinguish chamber |
| CN102938354A (en) * | 2012-11-15 | 2013-02-20 | 西安交通大学 | Contact and arc extinction system of mold case circuit breaker |
| CN102938354B (en) * | 2012-11-15 | 2015-05-27 | 西安交通大学 | Contact and arc extinction system of mold case circuit breaker |
| CN103871795A (en) * | 2014-03-19 | 2014-06-18 | 云南追梦科技有限公司 | Breaker arc extinguishing chamber and breaker with breaker arc extinguishing chamber |
| CN105097374A (en) * | 2014-05-16 | 2015-11-25 | 北京人民电器厂有限公司 | Breaker facilitating arc rapid movement and elongation |
| US10026578B2 (en) | 2014-05-16 | 2018-07-17 | Beijing People's Electric Plant Co., Ltd. | Breaker facilitating rapid movement and elongation of arc |
| CN105304423A (en) * | 2014-06-20 | 2016-02-03 | 三菱电机株式会社 | Cicrcuit breaker |
| CN105304423B (en) * | 2014-06-20 | 2017-10-31 | 三菱电机株式会社 | Breaker |
| CN110998771A (en) * | 2017-07-18 | 2020-04-10 | 伊顿智能动力有限公司 | Electrical switching apparatus and debris barrier therefor |
| CN110998771B (en) * | 2017-07-18 | 2023-09-12 | 伊顿智能动力有限公司 | Electrical switching apparatus and debris barrier therefor |
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141111 Granted publication date: 20051130 |