CN202523631U - Circuit breaker arc extinguish chamber and static arc contact thereof - Google Patents
Circuit breaker arc extinguish chamber and static arc contact thereof Download PDFInfo
- Publication number
- CN202523631U CN202523631U CN 201220082340 CN201220082340U CN202523631U CN 202523631 U CN202523631 U CN 202523631U CN 201220082340 CN201220082340 CN 201220082340 CN 201220082340 U CN201220082340 U CN 201220082340U CN 202523631 U CN202523631 U CN 202523631U
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- contact
- arc
- spout
- circuit breaker
- quiet
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Abstract
The utility model discloses a circuit breaker arc extinguish 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 formed by axially and concavely setting an end face of a static arc contact end. The air outlet channel is connected with the exhaust channel. An inner revolution wall of a nozzle is provided with a cylindrical section which adapts the static arc contact. The cylindrical section is located on one side of an air injection channel, wherein the one side is far away from an air cylinder. The air outlet channel located in a switch on position is connected with the air injection channel. And during an open position change process, after being sealed and shielded by the cylindrical section, the air outlet channel is separated from the nozzle and is switched on background pressure. The circuit breaker arc extinguish chamber and the static arc contact thereof have the following advantages that because the static arc contact is provided with the exhaust channel and the air outlet channel, the air outlet channel k is successively connected with a compression chamber, is shielded by the cylindrical section of the nozzle and is connected with the background pressure so that an ability for the circuit breaker to extinguish the arc can be improved.
Description
Technical field
The utility model relates to a kind of arc-extinguishing chamber of circuit breaker and quiet arc contact thereof.
Background technology
Said a kind of 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 said air cylinder 10 ' and piston 20 ', said air cylinder 10 ' and motive contact module 40 ' be connected and they relatively piston 20 ' between closing position and separating brake position, slide; Said fixed contact module 30 ' comprises quiet arc contact 31 ' and quiet main contact 32 '; Said motive contact module 40 ' comprises the moving arcing contact 41 ' that is installed in air cylinder 10 ', moving main contact 42 ' and spout, and said spout is provided with air-jet channel 45 '; Be filled with SF6 gas in the said plenum chamber.At present, widely used arc extinguishing fixed contact major part is a solid construction.It has following deficiency:
1, circuit breaker from closing position to separating brake position motion when cut-offfing, SF6 gas only acts on the periphery of electric arc to the effect of the cooling of electric arc and attract electrons, and is less relatively to the effect at high temperature arc core segment and electric arc root place;
2, utilizing arc energy to heat the gas in the air cylinder and make its supercharging, promptly help 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.
The utility model content
The utility model provides a kind of arc-extinguishing chamber of circuit breaker and quiet arc contact thereof, and it has overcome the existing deficiency of a kind of arc-extinguishing chamber of circuit breaker in the background technology.
The utility model solves one of technical scheme that its technical problem adopted:
A kind of arc-extinguishing chamber of circuit breaker, it comprises:
Air cylinder (10) and piston (20), they fit in plenum chamber (50), and, said air cylinder (10) sliding plunger (20);
Fixed contact module (30), it comprises the quiet arc contact (31) and a quiet main contact (32) of a column;
Motive contact module (40); It comprises the single-revolution shape and supplies moving arcing contact (41), the single-revolution shape of the adaptive contact insertion of quiet arc contact (31) and cooperate the moving main contact (42) of quiet main contact (32) and the spout of single-revolution shape and confession quiet arc contact (31) insertion; Said 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 said motive contact module (40) and air cylinder (10) are connected and the relative fixed contact module (30) of ability is slided between closing position and separating brake position;
Said quiet arc contact (31) offers the exhaust passage (T) that the outlet passageway (K) that radially runs through and axially is arranged with by quiet arc contact (31) distal end faces, and said 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 said spout, said cylindrical section (46) be positioned at air-jet channel (45) away from air cylinder (10) one sides.
Among one preferred embodiment: said air cylinder (10) comprise an annular seating, by the axially extended backward casing wall of annular seating outer peripheral edges and by the axially extended backward trombone slide of annular seating inner peripheral (11); Said casing wall is adaptive to be connected on outside the piston (20) by slip cap; Said trombone slide (11) can slide and pass piston (20) center; Said moving arcing contact (41) and moving main contact (42) are fixed in inside and outside the annular seating respectively, and said moving arcing contact is switched to the trombone slide endoporus.
Among one preferred embodiment: said trombone slide (11) rear end is established through hole (12) and is run through inside and outside the trombone slide.
Among one preferred embodiment: said piston (20) is established a unidirectional valve (21) and a valve (22).
Among one preferred embodiment: said spout comprises a big spout (43) and a little spout (44), and said air-jet channel (45) is formed between big spout and little spout.
Among one preferred embodiment: said big spout (43) has first rotating part that an outer wall and is fixed in outer wall end periphery; Said little spout (44) has second rotating part that inwall and is fixed in inwall end periphery; Said outer wall and inwall coaxial arrangement and be fixed in air cylinder (10); Said first rotating part is positioned at before second rotating part, and said air-jet channel (45) port is positioned between first rotating part and second rotating part, and said cylindrical section (46) is located at first rotating part.
Among one preferred embodiment: said 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 said quiet arc contact (11) is worn the diapire axis admittedly.
Two of the utility model solution technical scheme that its technical problem adopted is:
A kind of arc-extinguishing chamber of circuit breaker quiet arc contact; It is characterized in that: said quiet arc contact (31) offers the exhaust passage (T) that the outlet passageway (K) that radially runs through and axially is arranged with by quiet arc contact (31) distal end faces, and said exhaust passage (T) and outlet passageway (K) are connected.
The present technique scheme 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; Warp is communicated with plenum chamber, is blocked, is communicated with background pressure by the spout cylindrical section successively, therefore can improve the ability of circuit breaker extinguish arcs.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 has illustrated the generalized section of a kind of arc-extinguishing chamber of circuit breaker of background technology.
Fig. 2 has illustrated the generalized section of a kind of 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 a kind of 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 a kind of 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, a kind of arc-extinguishing chamber of circuit breaker, it comprises air cylinder 10, piston 20, fixed contact module 30 and motive contact module 40.
Said air cylinder 10 comprise an annular seating, by the axially extended backward casing wall of annular seating outer peripheral edges and by the axially extended backward trombone slide 11 of annular seating inner peripheral; Said piston 20 fixedly installs and slide opening is established at the center; Said 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 said trombone slide 11 can slide and pass the slide opening at piston 20 centers.Said trombone slide 11 rear ends are established through hole 12 and are run through inside and outside the trombone slide.Said piston 20 is established a unidirectional valve 21 and a valve 22.Said piston is fixed in one and overlaps 60 admittedly, and said trombone slide slides and passes 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 said plenum chamber.
Said 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 said quiet arc contact 11 is worn the diapire axis admittedly.Said quiet arc contact 31 offers the exhaust passage T that the outlet passageway K that radially runs through and axially is arranged with by quiet arc contact 31 distal end faces, and said exhaust passage T and outlet passageway K connect.
Said motive contact module 40 comprises the moving arcing contact 41 that is installed in air cylinder 10, moving main contact 42 and spout.Said moving arcing contact 41 is fixed in inside and outside the annular seating respectively with moving main contact 42; That is to say; Said air cylinder 10 and motive contact module 40 be connected and they relatively piston 20 between closing position and separating brake position, slide, and said moving arcing contact is switched to the trombone slide endoporus.Said spout comprises a big spout 43 and a little spout 44; Said big spout 43 has first rotating part that an outer wall and is fixed in outer wall end periphery; Said little spout 44 has second rotating part that inwall and is fixed in inwall end periphery; Said 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 said first rotating part is positioned at before second rotating part.Form air-jet channel 45 between said big spout and little spout, said 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 said air-jet channel 45 external port are positioned between first rotating part and second rotating part.Said first rotating part has a cylindrical section 46, and the adaptive quiet arc contact of said cylindrical section that is to say that said cylindrical section is positioned at the side away from air cylinder of air-jet channel 45.Said 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 setting in motion separates the quick increase of last stage pressure to plenum chamber to the sound arcing contact from the separating brake position 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 the cylindrical section 46 that big spout gets at this moment, no longer is blocked, and is in the state that communicates with the background pressure of circuit breaker.The conducting particles and arc energy
amount of assembling in spout throat so just can be discharged from outlet passageway K.Because gas outlet K is narrow relatively, still be used for heating the 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 from spout glibly.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; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model 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, said air cylinder (10) sliding plunger (20);
Fixed contact module (30), it comprises the quiet arc contact (31) and a quiet main contact (32) of a column;
Motive contact module (40); It comprises the single-revolution shape and supplies moving arcing contact (41), the single-revolution shape of the adaptive contact insertion of quiet arc contact (31) and cooperate the moving main contact (42) of quiet main contact (32) and the spout of single-revolution shape and confession quiet arc contact (31) insertion; Said 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 said motive contact module (40) and air cylinder (10) are connected and the relative fixed contact module (30) of ability is slided between closing position and separating brake position;
It is characterized in that: said quiet arc contact (31) offers the exhaust passage (T) that the outlet passageway (K) that radially runs through and axially is arranged with by quiet arc contact (31) distal end faces, and said 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 said spout, said cylindrical section (46) be positioned at air-jet channel (45) away from air cylinder (10) one sides.
2. a kind of arc-extinguishing chamber of circuit breaker according to claim 1; It is characterized in that: said air cylinder (10) comprise an annular seating, by the axially extended backward casing wall of annular seating outer peripheral edges and by the axially extended backward trombone slide of annular seating inner peripheral (11); Said casing wall is adaptive to be connected on outside the piston (20) by slip cap; Said trombone slide (11) can slide and pass piston (20) center; Said moving arcing contact (41) and moving main contact (42) are fixed in inside and outside the annular seating respectively, and said moving arcing contact is switched to the trombone slide endoporus.
3. a kind of arc-extinguishing chamber of circuit breaker according to claim 2 is characterized in that: said trombone slide (11) rear end is established through hole (12) and is run through inside and outside the trombone slide.
4. a kind of arc-extinguishing chamber of circuit breaker according to claim 1 is characterized in that: said piston (20) is established a unidirectional valve (21) and a valve (22).
5. according to claim 1 or 2 or 3 or 4 described a kind of arc-extinguishing chamber of circuit breaker, it is characterized in that: said spout comprises a big spout (43) and a little spout (44), and said air-jet channel (45) is formed between big spout and little spout.
6. a kind of arc-extinguishing chamber of circuit breaker according to claim 5; It is characterized in that: said big spout (43) has first rotating part that an outer wall and is fixed in outer wall end periphery; Said little spout (44) has second rotating part that inwall and is fixed in inwall end periphery; Said outer wall and inwall coaxial arrangement and be fixed in air cylinder (10); Said first rotating part is positioned at before second rotating part, and said air-jet channel (45) port is positioned between first rotating part and second rotating part, and said cylindrical section (46) is located at first rotating part.
7. according to claim 1 or 2 or 3 or 4 described a kind of arc-extinguishing chamber of circuit breaker; It is characterized in that: said 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 said quiet arc contact (11) is worn the diapire axis admittedly.
8. the quiet arc contact of an arc-extinguishing chamber of circuit breaker according to claim 1; It is characterized in that: said quiet arc contact (31) offers the exhaust passage (T) that the outlet passageway (K) that radially runs through and axially is arranged with by quiet arc contact (31) distal end faces, and said exhaust passage (T) and outlet passageway (K) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220082340 CN202523631U (en) | 2012-03-07 | 2012-03-07 | Circuit breaker arc extinguish chamber and static arc contact thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220082340 CN202523631U (en) | 2012-03-07 | 2012-03-07 | Circuit breaker arc extinguish chamber and static arc contact thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523631U true CN202523631U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220082340 Expired - Fee Related CN202523631U (en) | 2012-03-07 | 2012-03-07 | Circuit breaker arc extinguish chamber and static arc contact thereof |
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| Country | Link |
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| CN (1) | CN202523631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201049A (en) * | 2013-08-22 | 2014-12-10 | 河南平高电气股份有限公司 | Pneumatic cylinder-main contact device, dynamic end using same, and breaker arc extinguishing chamber |
| CN106328430A (en) * | 2016-08-25 | 2017-01-11 | 中国西电电气股份有限公司 | Arc extinguish chamber for series compressed air chambers |
-
2012
- 2012-03-07 CN CN 201220082340 patent/CN202523631U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201049A (en) * | 2013-08-22 | 2014-12-10 | 河南平高电气股份有限公司 | Pneumatic cylinder-main contact device, dynamic end using same, and breaker arc extinguishing chamber |
| CN106328430A (en) * | 2016-08-25 | 2017-01-11 | 中国西电电气股份有限公司 | Arc extinguish chamber for series compressed air chambers |
| CN106328430B (en) * | 2016-08-25 | 2018-08-07 | 中国西电电气股份有限公司 | A kind of arc-chutes of series connection plenum chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |