CN102881536A - Conveniently detached arc-extinguishing system of moulded case circuit breaker - Google Patents
Conveniently detached arc-extinguishing system of moulded case circuit breaker Download PDFInfo
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- CN102881536A CN102881536A CN201210396182XA CN201210396182A CN102881536A CN 102881536 A CN102881536 A CN 102881536A CN 201210396182X A CN201210396182X A CN 201210396182XA CN 201210396182 A CN201210396182 A CN 201210396182A CN 102881536 A CN102881536 A CN 102881536A
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Abstract
The invention relates to a conveniently detached arc-extinguishing system of a moulded case circuit breaker. The system is arranged in an insulating shell of the moulded case circuit breaker; an air vent is formed in the position, opposite to an outlet of the arc-extinguishing system, of the insulating shell. The arc-extinguishing system comprises a grating arc-extinguishing chamber and an arc-extinguishing chamber, wherein the grating arc-extinguishing chamber consists of an arc-extinguishing cover and an arc-extinguishing grid arranged in the arc-extinguishing cover and is provided with an arc outlet; the arc-extinguishing chamber is detachably arranged on an electric arcing passage between the arc outlet of the grating arc-extinguishing chamber and the air vent and comprises an arc-extinguishing chamber shell and an arc-extinguishing sheet arranged in the arc-extinguishing chamber shell; and at least one slide rail is arranged between the outer wall of the arc-extinguishing chamber shell and the inner wall of the electric arcing passage. Due to the adoption of the slide rail structure, the arc-extinguishing chamber is inserted into the electric arcing passage. The structure is similar to the drawing structure of a drawer, so that the arc-extinguishing chamber is convenient to detach.
Description
Technical field
The present invention relates to the structural design of breaker of plastic casing, specifically a kind of arc quenching system of easy-to-mount breaker of plastic casing belongs to the low-voltage electrical apparatus application.
Background technology
Existing circuit breaker is comprised of operating system, arc quenching system, tripping mechanism, insulation crust, operating grip etc.Corresponding arc quenching system back-end location is provided with the gas outlet on the insulation crust, be provided with the arcing passage between gas outlet and the arc quenching system, owing in use there is the larger fault current that cut-offs, the electric arc that produces does not extinguish in arc quenching system fully, remaining electric arc is by the arcing passage, overflow in gas outlet from insulation crust, the arcing that Here it is often says.Because the existence of arcing brings potential safety hazard easily in the process of using circuit breaker.
In order to eliminate arcing, can add the device that further to eliminate arcing in the arcing passage between arc quenching system and gas outlet, for example existing patent documentation CN 201084668Y discloses a kind of miniature circuit breaker with zero flashover arc extinguishing device, it arranges zero flashover arc extinguishing device in the arcing passage, zero flashover arc extinguishing device by the filter arc sheet of multilayer apart from one another by and bending connect and compose, every metafiltration arc sheet surface all is densely covered with aperture, and a narrow meshed end and arcing perpendicular direction arrange on zero flashover arc extinguishing device.In the technique scheme, circuit breaker is in disjunction, remaining part enters this zero flashover arc extinguishing device by the arcing passage behind the electric arc process arc quenching system arc extinguishing, filter arc sheet on the zero passage flashover arc extinguishing device is cut apart cooling layer by layer, until extinguish fully, so that do not have obvious arcing in the product outside, can improve fail safe and the reliability of product.Zero flashover arc extinguishing device in the such scheme is arranged in the groove of arcing passage top and prevents that its power of blowing that is blown out electric arc in arc-extinguish chamber from blowing away.Owing to be miniature circuit breaker, it is when practical application, do not need zero flashover arc extinguishing device dismantled and to realize connection, therefore the zero flashover arc extinguishing device in the above-mentioned miniature circuit breaker is arranged in the groove in the arcing passage and fixes, insulation crust installed get final product, need not it is dismantled.
And for breaker of plastic casing, the below of arcing passage arranges connecting groove, in the wiring process, electric wire then enters by the arcing passage after through the wiring hole on the plastic case breaker casing and realizes the wiring operation in the connecting groove, so arcing channel bottom and connecting groove are UNICOMs.And if adopt filter arc sheet in the technique scheme apart from one another by and the zero flashover arc extinguishing device that connects and composes of bending, the groove by being arranged on arcing passage top that can't be simple is realized fixing, need to add fixture, and for wiring easy to operate, need zero flashover arc extinguishing device easy disassembly, realize fixing if add fixture, when wiring, be inconvenient to again dismantle.
Summary of the invention
Technical problem to be solved by this invention is that arc-control device additional in the breaker of plastic casing of the prior art is fixing inconvenient and be not easy to dismounting, thereby a kind of arc quenching system of the easy-to-mount breaker of plastic casing with explosion chamber for convenience detach is provided.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of arc quenching system of easy-to-mount breaker of plastic casing is arranged in the breaker of plastic casing insulation crust, and the position that described insulation crust is relative with the outlet of described arc quenching system is provided with exhaust outlet, and described arc quenching system comprises:
Grating arc-extinguishing chamber is made of arc-extinguish chamber and the arc extinguishing grid pieces that is arranged in the described arc-extinguish chamber, and described grating arc-extinguishing chamber has the electric arc outlet;
The explosion chamber is removable installed in the electric arc outlet and the arcing passage between the described exhaust outlet of described grating arc-extinguishing chamber;
Described explosion chamber comprises the muffler of explosion chamber's housing and the section that sets within it;
Between described explosion chamber housing outer wall and described arcing vias inner walls, be provided with at least one slide rail.
Form positioning convex strip at least one sidewall of described explosion chamber housing, the described arcing vias inner walls position corresponding with described positioning convex strip forms the stopper slot that cooperates with it.
Form location notch at least one sidewall of described explosion chamber housing, the described arcing vias inner walls position corresponding with described location notch forms the spacing raised line that cooperates with it.
The top of described explosion chamber housing is provided with positioning boss, and position corresponding with described positioning boss on the described insulation crust forms the spacing hole that is mated.
The a plurality of steam vents of moulding on the described explosion chamber housing side cover plate relative with described exhaust outlet, a side relative with the electric arc outlet of described grating arc-extinguishing chamber is without cover plate.
Described muffler is silk netting, described silk netting undulate.
Also comprise arc insulating cover, consisted of by integrated mutually perpendicular flash barrier and location-plate;
Described location-plate is arranged between described explosion chamber case top and the described insulation crust, is provided with positive stop lug boss on it;
Described positioning boss center is through hole, and described positive stop lug boss passes through hole and the described spacing hole in the middle of the described positioning boss.
Described flash barrier inboard forms vertical raised line, is provided with the longitudinal groove that cooperates with described vertical raised line in the end of described insulation crust.
The position that described flash barrier is relative with the electric arc outlet of described explosion chamber is provided with out vent hole.
Technique scheme of the present invention compared with prior art has following beneficial effect at least:
(1) in the arc quenching system of the present invention, the explosion chamber comprises the muffler of explosion chamber's housing and the section that sets within it; Between explosion chamber's housing outer wall and arcing vias inner walls, be provided with at least one slide rail.So that the explosion chamber is inserted in the arcing passage, this structure is similar to the drawing structure of drawer, makes things convenient for the dismounting of explosion chamber by rail structure is set.
(2) in the arc quenching system of the present invention, provided the molding mode of two kinds of drawer-type structures, wherein a kind of is to form positioning convex strip at least one sidewall of explosion chamber's housing, and the described arcing vias inner walls position corresponding with described positioning convex strip forms the stopper slot that cooperates with it; Another kind is, forms location notch at least one sidewall of described explosion chamber housing, and the described arcing vias inner walls position corresponding with described location notch forms the spacing raised line that cooperates with it.Two kinds of concrete schemes that more than provide only need to carry out simple Adjusting Shape at explosion chamber's housing with the insulation crust that forms the arcing passage and get final product, and need not increase extra parts the explosion chamber is installed, and structure is simpler, dismantles convenient.
(3) in the arc quenching system of the present invention, the top of explosion chamber's housing is provided with positioning boss, and the position corresponding with positioning boss forms the spacing hole that is mated on the insulation crust.By cooperating of spacing hole and positioning boss, the explosion chamber is carried out further spacing, when the power of blowing in the electric arc exit of grating arc-extinguishing chamber was excessive, the explosion chamber can keep good stability.
(4) in the arc quenching system of the present invention, also further comprise arc insulating cover, consisted of by integrated mutually perpendicular flash barrier and location-plate; Location-plate is arranged between explosion chamber's case top and the insulation crust, is provided with positive stop lug boss on it; The positioning boss center is through hole, and positive stop lug boss passes through hole and the spacing hole in the middle of the positioning boss, realizes the location to arc insulating cover; And the flash barrier inboard forms vertical raised line, is provided with the longitudinal groove that cooperates with vertical raised line in the end of insulation crust.Vertically raised line inserts in the process of longitudinal groove from top to bottom, positive stop lug boss enters through hole and the spacing hole in the middle of the corresponding with it positioning boss, and the explosion chamber is fixed, and cleverly these parts is combined by above-mentioned rational design, rational in infrastructure, have good practicality.
(5) in the arc quenching system of the present invention, can further stop the charged ion of from the explosion chamber, " fleeing from " excessive and then guarantee that from the insulation crust of breaker of plastic casing charged ion does not out impact the electric elements that are installed in the breaker of plastic casing periphery owing to also set up flash barrier in the outside of explosion chamber.
Description of drawings
For content of the present invention is more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the structural representation of an embodiment of arc quenching system of the present invention;
Fig. 2 is the position relationship schematic diagram of explosion chamber of the present invention and grating arc-extinguishing chamber;
Fig. 3 is the perspective view of explosion chamber of the present invention;
Fig. 4 is the perspective view of muffler of the present invention;
Fig. 5 is the perspective view of insulation shell of the present invention;
Fig. 6 is the position relationship schematic diagram of another angle of explosion chamber of the present invention and grating arc-extinguishing chamber;
Fig. 7 is the perspective view at a visual angle of arc insulating cover of the present invention;
Fig. 8 is the perspective view at another visual angle of arc insulating cover of the present invention;
Reference numeral wherein is: 1-grating arc-extinguishing chamber, 11-arc-extinguish chamber, 12-arc extinguishing grid pieces, 2-explosion chamber, 21-explosion chamber housing, 23-muffler, 24-steam vent, 25-positioning boss, the 26-positioning convex strip, 3-contact system, 31-fixed contact, 32-moving contact, the 4-insulation crust, 42-spacing hole, 43-longitudinal groove, 44-stopper slot, the 6-arc insulating cover, 61-flash barrier, 62-location-plate, the vertical raised line of 63-, the 64-positive stop lug boss, 65-goes out vent hole.
Embodiment
Embodiment 1
Present embodiment provides a kind of arc quenching system of easy-to-mount breaker of plastic casing, as shown in Figure 1, described arc quenching system is arranged in the breaker of plastic casing insulation crust 4, the position that described insulation crust 4 is relative with the outlet of described arc quenching system is provided with exhaust outlet, described arc quenching system comprises grating arc-extinguishing chamber 1, in conjunction with as can be known illustrated in figures 1 and 2, described grating arc-extinguishing chamber 1 is made of arc-extinguish chamber 11 and the arc extinguishing grid pieces 12 that are arranged in the described arc-extinguish chamber 11, and described grating arc-extinguishing chamber 1 has the electric arc outlet.As can be seen from Figure 2, contact system 3 comprises fixed contact 31 and moving contact 32, the contact point of described moving contact 32 and described fixed contact 31 is in described grating arc-extinguishing chamber 1, when described moving contact 32 is scolded out with described fixed contact 31, produce electric arc, electric arc is overflowed from the electric arc outlet of described grating arc-extinguishing chamber 1 after cutting off arc extinguishing through described arc extinguishing grid pieces 12.
Described arc quenching system also comprises, explosion chamber 2 is removable installed in the electric arc outlet and the arcing passage between the described exhaust outlet of described grating arc-extinguishing chamber 1; In conjunction with Fig. 3, described explosion chamber 2 comprises the muffler 23 of explosion chamber's housing 21 and the section that sets within it; Be provided with at least one slide rail between described explosion chamber housing 21 outer walls and described arcing vias inner walls, so that the explosion chamber is inserted in the arcing passage, this structure is similar to the drawing structure of drawer, makes things convenient for the dismounting of explosion chamber by rail structure is set.
As can be seen from Figure 3, drawer-type structure in the present embodiment is realized by following structure: form positioning convex strip 26 at least one sidewall of described explosion chamber housing 21, described arcing vias inner walls and described positioning convex strip 26 corresponding positions form the stopper slot 44 that cooperates with it.Perhaps form location notch at least one sidewall of described explosion chamber housing 21, the described arcing vias inner walls position corresponding with described location notch forms the spacing raised line that cooperates with it; Two kinds of concrete schemes that more than provide only need to carry out simple Adjusting Shape at explosion chamber's housing with the insulation crust that forms the arcing passage and get final product, and need not increase extra parts the explosion chamber is installed, and structure is simpler, dismantles convenient.
Fig. 4 has provided the structural representation of described muffler 23, and described muffler 23 is silk netting, described silk netting undulate.
As preferred embodiment, such as Fig. 3 and Fig. 5, the top of described explosion chamber housing 21 is provided with positioning boss 25, and position corresponding with described positioning boss 25 on the described insulation crust 4 forms the spacing hole 42 that is mated.
More preferably, as shown in Figure 6, a plurality of steam vents 24 of moulding on described explosion chamber housing 21 side cover plate relative with described exhaust outlet, a side relative with the electric arc outlet of described grating arc-extinguishing chamber 1 is without cover plate.So can be so that flying fox be isolated absorption more fully in the explosion chamber.
Present embodiment carries out following improvement on the basis of embodiment 1, shown in Figure 1, also comprise arc insulating cover 6, described arc insulating cover 6 is made of integrated mutually perpendicular flash barrier 61 and location-plate 62, see Fig. 7 and Fig. 8, described location-plate 62 is arranged between housing 21 tops, described explosion chamber and the described insulation crust 4, is provided with positive stop lug boss 64 on it; Described positioning boss 25 centers are through hole, and described positive stop lug boss 64 passes through hole and the described spacing hole 42 in the middle of the described positioning boss 25.Described flash barrier 61 inboards form vertical raised line 63, are provided with the longitudinal groove 43 that cooperates with described vertical raised line 63 in the end of described insulation crust 4.The position that described flash barrier 61 is relative with the electric arc outlet of described explosion chamber 2 is provided with out vent hole 65.Described vertical raised line 63 inserts in the process of described longitudinal groove 43 from top to bottom, described positive stop lug boss 64 enters through hole and the described spacing hole 42 in the middle of the corresponding with it described positioning boss 25, described explosion chamber 2 is fixed, cleverly these parts are combined by above-mentioned rational design, rational in infrastructure, have good practicality.
And, can further stop the charged ion of from the explosion chamber, " fleeing from " excessive and then guarantee that from the insulation crust of breaker of plastic casing charged ion does not out impact the electric elements that are installed in the breaker of plastic casing periphery owing to also set up flash barrier in the outside of explosion chamber.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.
Claims (9)
1. the arc quenching system of an easy-to-mount breaker of plastic casing is arranged in the breaker of plastic casing insulation crust (4), and the position that described insulation crust (4) is relative with the outlet of described arc quenching system is provided with exhaust outlet, and described arc quenching system comprises:
Grating arc-extinguishing chamber (1) is made of arc-extinguish chamber (11) and the arc extinguishing grid pieces (12) that is arranged in the described arc-extinguish chamber (11), and described grating arc-extinguishing chamber (1) has the electric arc outlet;
Explosion chamber (2) is removable installed in the electric arc outlet and the arcing passage between the described exhaust outlet of described grating arc-extinguishing chamber (1);
It is characterized in that:
Described explosion chamber (2) comprises the muffler (23) of explosion chamber's housing (21) and the section that sets within it;
Between described explosion chamber housing (21) outer wall and described arcing vias inner walls, be provided with at least one slide rail.
2. the arc quenching system of easy-to-mount breaker of plastic casing according to claim 1 is characterized in that:
Form positioning convex strip (26) at least one sidewall of described explosion chamber housing (21), the described arcing vias inner walls position corresponding with described positioning convex strip (26) forms the stopper slot (44) that cooperates with it.
3. the arc quenching system of easy-to-mount breaker of plastic casing according to claim 1 is characterized in that:
Form location notch at least one sidewall of described explosion chamber housing (21), the described arcing vias inner walls position corresponding with described location notch forms the spacing raised line that cooperates with it.
4. the arc quenching system of arbitrary described easy-to-mount breaker of plastic casing according to claim 1-3 is characterized in that:
The top of described explosion chamber housing (21) is provided with positioning boss (25), and the upper position corresponding with described positioning boss (25) of described insulation crust (4) forms the spacing hole (42) that is mated.
5. the arc quenching system of arbitrary described easy-to-mount breaker of plastic casing according to claim 1-4 is characterized in that:
The a plurality of steam vents of moulding (24) on described explosion chamber housing (21) side cover plate relative with described exhaust outlet, a side relative with the electric arc outlet of described grating arc-extinguishing chamber (1) is without cover plate.
6. the arc quenching system of arbitrary described easy-to-mount breaker of plastic casing according to claim 1-5 is characterized in that:
Described muffler (23) is silk netting, described silk netting undulate.
7. the arc quenching system of arbitrary described easy-to-mount breaker of plastic casing according to claim 1-6 is characterized in that:
Also comprise
Arc insulating cover (6) is made of integrated mutually perpendicular flash barrier (61) and location-plate (62);
Described location-plate (62) is arranged between housing (21) top, described explosion chamber and the described insulation crust (4), is provided with positive stop lug boss (64) on it;
Described positioning boss (25) center is through hole, and described positive stop lug boss (64) passes through hole and the described spacing hole (42) in the middle of the described positioning boss (25).
8. the arc quenching system of easy-to-mount breaker of plastic casing according to claim 7 is characterized in that:
Described flash barrier (61) inboard forms vertical raised line (63), is provided with the longitudinal groove (43) that cooperates with described vertical raised line (63) in the end of described insulation crust (4).
9. it is characterized in that according to claim 7 or the arc quenching system of 8 described easy-to-mount breaker of plastic casing:
The position that described flash barrier (61) is relative with the electric arc outlet of described explosion chamber (2) is provided with out vent hole (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396182.XA CN102881536B (en) | 2012-10-18 | 2012-10-18 | Conveniently detached arc-extinguishing system of moulded case circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396182.XA CN102881536B (en) | 2012-10-18 | 2012-10-18 | Conveniently detached arc-extinguishing system of moulded case circuit breaker |
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| CN102881536A true CN102881536A (en) | 2013-01-16 |
| CN102881536B CN102881536B (en) | 2014-10-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104027A (en) * | 2017-05-08 | 2017-08-29 | 天津市百利电气有限公司 | The external hanging type of low-voltage moulded case circuit breaker disappears free arc-control device |
| CN112820604A (en) * | 2021-02-07 | 2021-05-18 | 浙江世隆电气科技有限公司 | Zero-flashover molded case circuit breaker |
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
| CN114203493A (en) * | 2021-12-23 | 2022-03-18 | 安徽鑫龙低压电器有限公司 | High-voltage zero-arcing shield structure |
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| CN102315047A (en) * | 2010-06-30 | 2012-01-11 | 北京翠祥电器元件有限公司 | Flashover preventing device for circuit breaker |
| CN202796810U (en) * | 2012-10-18 | 2013-03-13 | 浙江天正电气股份有限公司 | Moulded case circuit breaker arc extinguishing system convenient for assembly and disassembly |
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| DE3541514A1 (en) * | 1985-11-21 | 1987-05-27 | Siemens Ag | ARC EXTINGUISHING CHAMBER WITH AN ATTACHMENT FOR FURTHER COOLING OF LEAKING GASES |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104027A (en) * | 2017-05-08 | 2017-08-29 | 天津市百利电气有限公司 | The external hanging type of low-voltage moulded case circuit breaker disappears free arc-control device |
| CN112820604A (en) * | 2021-02-07 | 2021-05-18 | 浙江世隆电气科技有限公司 | Zero-flashover molded case circuit breaker |
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
| CN113745073B (en) * | 2021-09-03 | 2024-10-01 | 浙江巨邦电器股份有限公司 | Plastic case circuit breaker with zero arcing device |
| CN114203493A (en) * | 2021-12-23 | 2022-03-18 | 安徽鑫龙低压电器有限公司 | High-voltage zero-arcing shield structure |
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|---|---|
| CN102881536B (en) | 2014-10-15 |
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