CN103311049A - Circuit breaker arc extinguishing chamber and static arc contact thereof - Google Patents
Circuit breaker arc extinguishing chamber and static arc contact thereof Download PDFInfo
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- CN103311049A CN103311049A CN2012100580417A CN201210058041A CN103311049A CN 103311049 A CN103311049 A CN 103311049A CN 2012100580417 A CN2012100580417 A CN 2012100580417A CN 201210058041 A CN201210058041 A CN 201210058041A CN 103311049 A CN103311049 A CN 103311049A
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- spout
- circuit breaker
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Abstract
The invention discloses a circuit breaker arc extinguishing chamber and a static arc contact thereof. The static arc contact is provided with an air outlet channel which penetrates radially and an exhaust channel which is axially and concavely arranged on an end face of a tail end of the static arc contact. The air outlet channel and the exhaust channel are communicated. A revolution wall inside a nozzle is provided with a cylindrical section matched with the static arc contact, and the cylindrical section is located at one side, far away from an air cylinder, of an air injection channel. The air outlet channel located in a switch-on position is communicated with the air injection channel. When being switched to a switch-off position, the air outlet channel is separated from the nozzle and is communicated with background pressure after being sealed and shielded by the cylindrical section. The circuit breaker arc extinguishing chamber and the static arc contact thereof have the advantage that the arc extinguishing capability of a circuit breaker can be improved as the static arc contact is provided with the exhaust channel and the air outlet channel, and the air outlet channel k is sequentially connected with a compression chamber, shielded by the cylindrical section of the nozzle and communicated with the background pressure.
Description
Technical field
The present invention relates to arc-extinguishing chamber of circuit breaker and quiet arc contact thereof.
Background technology
Described arc-extinguishing chamber of circuit breaker, please refer to Fig. 1, it comprises air cylinder 10 ', piston 20 ', fixed contact module 30 ' and motive contact module 40 ', form plenum chamber 50 ' between described air cylinder 10 ' and piston 20 ', described air cylinder 10 ' is connected with motive contact module 40 ' and they can slide between closing position and separating brake position by relative piston 20 '; Described fixed contact module 30 ' comprises quiet arc contact 31 ' and quiet main contact 32 '; Described motive contact module 40 ' comprises the moving arcing contact 41 ' that is installed in air cylinder 10 ', moving main contact 42 ' and spout, and described spout is provided with air-jet channel 45 '; Be filled with SF6 gas in the described plenum chamber.At present, widely used arc extinguishing fixed contact major part is solid construction.It has following deficiency:
1, when circuit breaker moves to cut-off to the separating brake position from closing position, SF6 gas only acts on the periphery of electric arc to the effect of the cooling of electric arc and attract electrons, and is relative less with the effect at electric arc root place to high temperature arc core segment;
2, utilizing arc energy to heat the gas in the air cylinder and make its supercharging, namely be conducive to blow-out, also can alleviate the burden of operating mechanism, is the arc quenching method that extensively adopts at present.Yet things always has dual character, and too many when the arc energy of spout upstream and conducting particles accumulation, too much arc energy accumulates in spout throat, will influence behind the current over-zero diffusion of energy and ion in the arc gap, and is unfavorable to blow-out.It is more outstanding that this point seems when cut-offfing close-in fault.
Summary of the invention
The invention provides arc-extinguishing chamber of circuit breaker and quiet arc contact thereof, it has overcome the existing deficiency of arc-extinguishing chamber of circuit breaker in the background technology.
One of the technical solution adopted for the present invention to solve the technical problems is:
Arc-extinguishing chamber of circuit breaker, it comprises:
Air cylinder (10) and piston (20), they fit in plenum chamber (50), and described air cylinder (10) piston (20) relatively slides and can change plenum chamber (50) container;
Fixed contact module (30), it comprises quiet arc contact (31) and a quiet main contact (32) of a column;
Motive contact module (40), it comprises moving arcing contact (41), single-revolution shape and the moving main contact (42) that cooperates quiet main contact (32) and the single-revolution shape that single-revolution shape and the adaptive contact of confession quiet arc contact (31) are inserted and supplies the spout of quiet arc contact (31) insertion, described spout is provided with the air-jet channel (45) that the logical plenum chamber (50) of a termination, the other end are positioned at the spout turret wall, and described motive contact module (40) is connected with air cylinder (10) and the relative fixed contact module of energy (30) is slided between closing position and separating brake position;
Described quiet arc contact (31) offers the exhaust passage (T) that an outlet passageway that radially runs through (K) and axially is arranged with by quiet arc contact (31) distal end faces, and described exhaust passage (T) and outlet passageway (K) are connected; Turret wall has the cylindrical section (46) of an adaptive quiet arc contact (31) in the described spout, described cylindrical section (46) be positioned at air-jet channel (45) away from air cylinder (10) one sides; Be in outlet passageway in the closing position (K) and connect air-jet channel (45), and in the change procedure of separating brake position, outlet passageway (K) after being blocked by cylindrical section (46) sealing, breaks away from spout then and connects background pressure earlier.
Among one preferred embodiment: described air cylinder (10) comprise an annular seating, one by the annular seating outer peripheral edges backward axially extended casing wall and by annular seating inner peripheral axially extended trombone slide (11) backward, described casing wall is adaptive to be connected on outside the piston (20) by slip cap, described trombone slide (11) can slide through piston (20) center, described moving arcing contact (41) and moving main contact (42) are fixed in inside and outside the annular seating respectively, and described moving arcing contact is switched to the trombone slide endoporus.
Among one preferred embodiment: described trombone slide (11) rear end is established through hole (12) and is run through inside and outside the trombone slide.
Among one preferred embodiment: described piston (20) is established a unidirectional valve (21) and a valve (22).
Among one preferred embodiment: described spout comprises a big spout (43) and a little spout (44), and described air-jet channel (45) is formed between big spout and little spout.
Among one preferred embodiment: described big spout (43) has first rotating part that an outer wall and is fixed in outer wall end periphery, described little spout (44) has second rotating part that inwall and is fixed in inwall end periphery, described outer wall and inwall coaxial arrangement and be fixed in air cylinder (10), described first rotating part is positioned at before second rotating part, described air-jet channel (45) port is positioned between first rotating part and second rotating part, and described cylindrical section (46) is located at first rotating part.
Among one preferred embodiment: described quiet main contact (12) has a diapire, and contacts wall with one by what ring wall end periphery extended internally by the axially extended ring wall of diapire outer peripheral edges, and described quiet arc contact (11) is worn the diapire axis admittedly.
Two of the technical solution adopted for the present invention to solve the technical problems is:
Arc-extinguishing chamber of circuit breaker quiet arc contact, it is characterized in that: described quiet arc contact (31) offers the exhaust passage (T) that an outlet passageway that radially runs through (K) and axially is arranged with by quiet arc contact (31) distal end faces, and described exhaust passage (T) and outlet passageway (K) are connected.
The technical program is compared with background technology, it has following advantage: owing at the quiet arc contact passing away and outlet passageway are set, and outlet passageway K is in the separating brake process, through being communicated with plenum chamber, being blocked, be communicated with background pressure by the spout cylindrical section, therefore can improve the ability of circuit breaker extinguish arcs successively.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 has illustrated the generalized section of the arc-extinguishing chamber of circuit breaker of background technology.
Fig. 2 has illustrated the generalized section of the arc-extinguishing chamber of circuit breaker of a preferred embodiment, and this moment, arc control device were in closing position.
Fig. 3 has illustrated the generalized section of the arc-extinguishing chamber of circuit breaker of a preferred embodiment, when arc control device were in the quiet arc contact and separated with moving arcing contact this moment.
Fig. 4 has illustrated the generalized section of the arc-extinguishing chamber of circuit breaker of a preferred embodiment, and this moment, arc control device were in the separating brake position.
Embodiment
Please refer to Fig. 2 to Fig. 4, arc-extinguishing chamber of circuit breaker, it comprises air cylinder 10, piston 20, fixed contact module 30 and motive contact module 40.
Described air cylinder 10 comprise an annular seating, one by the annular seating outer peripheral edges backward axially extended casing wall and by annular seating inner peripheral axially extended trombone slide 11 backward, described piston 20 fixedly installs and slide opening is established at the center, described casing wall is adaptive, and can slip cap to be connected on piston 20 outer and make air cylinder 10 and 20 formation plenum chambers 50 of piston, and described trombone slide 11 can slide through the slide opening at piston 20 centers.Described trombone slide 11 rear ends are established through hole 12 and are run through inside and outside the trombone slide.Described piston 20 is established a unidirectional valve 21 and a valve 22.Described piston is fixed in one and overlaps 60 admittedly, and described trombone slide slides through solid cover endoporus.This air cylinder and piston structure can adopt existing structure, do not do specific descriptions at this.Among the present embodiment, be filled with SF6 gas in the described plenum chamber.
Described quiet main contact 12 has a diapire, and contacts wall with one by what ring wall end periphery extended internally by the axially extended ring wall of diapire outer peripheral edges, and described quiet arc contact 11 is worn the diapire axis admittedly.Described quiet arc contact 31 offers the exhaust passage T that an outlet passageway K who radially runs through and axially is arranged with by quiet arc contact 31 distal end faces, and described exhaust passage T and outlet passageway K connect.
Described motive contact module 40 comprises the moving arcing contact 41 that is installed in air cylinder 10, moving main contact 42 and spout.Described moving arcing contact 41 and moving main contact 42 are fixed in inside and outside the annular seating respectively, that is to say, described air cylinder 10 is connected with motive contact module 40 and they can slide between closing position and separating brake position by relative piston 20, and described moving arcing contact is switched to the trombone slide endoporus.Described spout comprises a big spout 43 and a little spout 44; Described big spout 43 has first rotating part that an outer wall and is fixed in outer wall end periphery, described little spout 44 has second rotating part that inwall and is fixed in inwall end periphery, described outer wall and inwall coaxial arrangement and be fixed in air cylinder 10, and be positioned at 42 of moving arcing contact 41 and moving main contacts, and described first rotating part is positioned at before second rotating part.Form air-jet channel 45 between described big spout and little spout, described air-jet channel 45 inner port are connected air cylinder 10, and external port passes to the surface of revolution in the spout, that is to say that described air-jet channel 45 external port are positioned between first rotating part and second rotating part.Described first rotating part has a cylindrical section 46, and the adaptive quiet arc contact of described cylindrical section that is to say that described cylindrical section is positioned at the side away from air cylinder of air-jet channel 45.Described air-jet channel 45 external port that are positioned at closing position are aimed at outlet passageway K.
When circuit breaker is in the separating brake position, outlet passageway K is in the state that communicates with plenum chamber 50, stage before setting in motion separates to the sound arcing contact, outlet passageway K is blocked by the cylindrical section 46 of big spout, has guaranteed that like this plenum chamber separates the quick increase of last stage pressure from separating brake position setting in motion to the sound arcing contact at circuit breaker.Proceed when the breaker open operation motion, when the sound arcing contact was separated from one another, electric arc began generation, and outlet passageway K leaves big spout at this moment
Cylindrical section 46, no longer be blocked, be in the state that communicates with the background pressure of circuit breaker.Conducting particles and the arc energy of assembling in spout throat like this
Amount just can be discharged from outlet passageway K.Because gas outlet K is narrow relatively, still be used for heating gas in the air cylinder for most of energy of electric arc, make the air cylinder supercharging.When the breaker open operation motion was proceeded, the quiet arc contact no longer stopped up spout up to the separating brake position, in this stage, the gas in the jar of calming the anger continues to be compressed, but spout is opened fully, and unobstructed arc blow-out passage forms, and the gases at high pressure in the air cylinder blow out glibly from spout.Some SF6 gas can flow through exhaust passage T, has so just increased SF6 air-flow and the scope that electric arc contacts closely, has increased the cooling effect to the electric arc root.Thereby, improved the ability of circuit breaker extinguish arcs.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process according to this, i.e. the equivalence of doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (8)
1. arc-extinguishing chamber of circuit breaker, it comprises:
Air cylinder (10) and piston (20), they fit in plenum chamber (50), and described air cylinder (10) piston (20) relatively slides and can change plenum chamber (50) container;
Fixed contact module (30), it comprises quiet arc contact (31) and a quiet main contact (32) of a column;
Motive contact module (40), it comprises moving arcing contact (41), single-revolution shape and the moving main contact (42) that cooperates quiet main contact (32) and the single-revolution shape that single-revolution shape and the adaptive contact of confession quiet arc contact (31) are inserted and supplies the spout of quiet arc contact (31) insertion, described spout is provided with the air-jet channel (45) that the logical plenum chamber (50) of a termination, the other end are positioned at the spout turret wall, and described motive contact module (40) is connected with air cylinder (10) and the relative fixed contact module of energy (30) is slided between closing position and separating brake position;
It is characterized in that: described quiet arc contact (31) offers the exhaust passage (T) that an outlet passageway that radially runs through (K) and axially is arranged with by quiet arc contact (31) distal end faces, and described exhaust passage (T) and outlet passageway (K) are connected; Turret wall has the cylindrical section (46) of an adaptive quiet arc contact (31) in the described spout, described cylindrical section (46) be positioned at air-jet channel (45) away from air cylinder (10) one sides; Be in outlet passageway in the closing position (K) and connect air-jet channel (45), and in the change procedure of separating brake position, outlet passageway (K) after being blocked by cylindrical section (46) sealing, breaks away from spout then and connects background pressure earlier.
2. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterized in that: described air cylinder (10) comprise an annular seating, one by the annular seating outer peripheral edges backward axially extended casing wall and by annular seating inner peripheral axially extended trombone slide (11) backward, described casing wall is adaptive to be connected on outside the piston (20) by slip cap, described trombone slide (11) can slide through piston (20) center, described moving arcing contact (41) and moving main contact (42) are fixed in inside and outside the annular seating respectively, and described moving arcing contact is switched to the trombone slide endoporus.
3. arc-extinguishing chamber of circuit breaker according to claim 2 is characterized in that: described trombone slide (11) rear end is established through hole (12) and is run through inside and outside the trombone slide.
4. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterized in that: described piston (20) is established a unidirectional valve (21) and a valve (22).
5. according to claim 1 or 2 or 3 or 4 described arc-extinguishing chamber of circuit breaker, it is characterized in that: described spout comprises a big spout (43) and a little spout (44), and described air-jet channel (45) is formed between big spout and little spout.
6. arc-extinguishing chamber of circuit breaker according to claim 5, it is characterized in that: described big spout (43) has first rotating part that an outer wall and is fixed in outer wall end periphery, described little spout (44) has second rotating part that inwall and is fixed in inwall end periphery, described outer wall and inwall coaxial arrangement and be fixed in air cylinder (10), described first rotating part is positioned at before second rotating part, described air-jet channel (45) port is positioned between first rotating part and second rotating part, and described cylindrical section (46) is located at first rotating part.
7. according to claim 1 or 2 or 3 or 4 described arc-extinguishing chamber of circuit breaker, it is characterized in that: described quiet main contact (12) has a diapire, and contacts wall with one by what ring wall end periphery extended internally by the axially extended ring wall of diapire outer peripheral edges, and described quiet arc contact (11) is worn the diapire axis admittedly.
8. arc-extinguishing chamber of circuit breaker quiet arc contact, it is characterized in that: described quiet arc contact (31) offers the exhaust passage (T) that an outlet passageway that radially runs through (K) and axially is arranged with by quiet arc contact (31) distal end faces, and described exhaust passage (T) and outlet passageway (K) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210058041.7A CN103311049B (en) | 2012-03-07 | 2012-03-07 | Arc-extinguishing chamber of circuit breaker and static arc contact thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210058041.7A CN103311049B (en) | 2012-03-07 | 2012-03-07 | Arc-extinguishing chamber of circuit breaker and static arc contact thereof |
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| CN103311049A true CN103311049A (en) | 2013-09-18 |
| CN103311049B CN103311049B (en) | 2015-11-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106952762A (en) * | 2017-04-25 | 2017-07-14 | 中国电力科学研究院 | A kind of arc-chutes of breaking on-load switch |
| CN108091518A (en) * | 2017-12-23 | 2018-05-29 | 中国西电电气股份有限公司 | A kind of high-voltage AC breaker and its arc-chutes and moving contact |
| CN109283460A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | It is a kind of for testing the experimental rig of self extinguishing type high-voltage switch gear break performance |
| CN109283458A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | Self extinguishing type high-voltage switch gear break performance experimental rig |
| CN110112033A (en) * | 2019-05-08 | 2019-08-09 | 沈阳工业大学 | A kind of arcing contact and application method with auxiliary piston |
| CN112908771A (en) * | 2020-11-26 | 2021-06-04 | 平高集团有限公司 | Circuit breaker and arc extinguish chamber thereof |
| CN114420481A (en) * | 2022-01-06 | 2022-04-29 | 平高集团有限公司 | Isolating switch with arc extinguishing structure and moving contact component of isolating switch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106952762A (en) * | 2017-04-25 | 2017-07-14 | 中国电力科学研究院 | A kind of arc-chutes of breaking on-load switch |
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| CN108091518A (en) * | 2017-12-23 | 2018-05-29 | 中国西电电气股份有限公司 | A kind of high-voltage AC breaker and its arc-chutes and moving contact |
| CN108091518B (en) * | 2017-12-23 | 2019-03-19 | 中国西电电气股份有限公司 | A kind of high-voltage AC breaker and its arc-chutes and moving contact |
| CN110112033A (en) * | 2019-05-08 | 2019-08-09 | 沈阳工业大学 | A kind of arcing contact and application method with auxiliary piston |
| CN112908771A (en) * | 2020-11-26 | 2021-06-04 | 平高集团有限公司 | Circuit breaker and arc extinguish chamber thereof |
| CN112908771B (en) * | 2020-11-26 | 2023-02-17 | 平高集团有限公司 | Circuit breaker and arc extinguish chamber thereof |
| CN114420481A (en) * | 2022-01-06 | 2022-04-29 | 平高集团有限公司 | Isolating switch with arc extinguishing structure and moving contact component of isolating switch |
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| CN103311049B (en) | 2015-11-25 |
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