CN104124086A - Electrical arc extinguishing device - Google Patents
Electrical arc extinguishing device Download PDFInfo
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- CN104124086A CN104124086A CN201410404402.8A CN201410404402A CN104124086A CN 104124086 A CN104124086 A CN 104124086A CN 201410404402 A CN201410404402 A CN 201410404402A CN 104124086 A CN104124086 A CN 104124086A
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- electromagnet
- contact
- electric arc
- blowning installation
- housing
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Abstract
The invention discloses an electrical arc extinguishing device. The electrical arc extinguishing device comprises a grating device for cutting the electric arcs, a blowing device for transversely blowing the electric arcs, and an electromagnetic device for forming a magnetic field between a movable contact and a fixed contact. The electrical arc extinguishing device is characterized in that the grating device is used for cutting the electric arcs into a series of short arcs, the blowing device is used for transversely blowing the electric arcs so as to bend and elongate the electric arcs, the arcs are extinguished under the action of cooling and dispersion, besides, the electric arcs are bent towards the grating device so that the electric arc cutting effect of the grating device can be further enhanced, the electromagnetic device is used for forming the magnetic field between the contacts and the electric arcs are bent towards the grating device by use of the lorentz force so that the electric arc cutting effect of the grating device also can be enhanced, the grating device, the blowing device and the electromagnetic device are matched with each other to extinguish the arcs, and moreover, the grating device is driven by a driving device to move towards the electric arcs and the electric arcs are driven by the blowing device and the electric device to move towards the grating device so that the arc extinguishing speed is greatly increased.
Description
Technical field
The present invention relates to technical field of electricity, relate in particular to a kind of electric arc-control device.
Background technology
Arc-control device is used for interrupting or extinguishing the electric arc producing when a pair of current carrying contact disconnects.When contact is separated from each other, electric current flows in a corresponding contact zone diminishing gradually, and the temperature on this region is raise gradually.Can produce a molten bridge a flash before contact separation, electric current hour, molten bridge finally can be broken; When electric current is large, molten bridge will evaporate.Therefore electric current can only continue to flow by the electric arc occurring with conductive plasma cylindricality formula.
The type of switching current and intensity can exert an influence to the intensity of this electric arc.When a circuit by a line protection switch protection is short-circuited, can produce the short circuit current up to 15000A.Now, electric arc can make the temperature in switch outer cover be up to 20000K in its firing duration.Yet so high heat load can be brought adverse effect to switch block.For example metalwork and insulating part are will be due to electric arc influence impaired or destroyed.Therefore, be necessary to open with the fastest speed extinguish arcs the thermal power transfer degree that minimizes.
Summary of the invention
The present invention solves existing technical problem in prior art, thereby provides a kind of arc quenching effect good, the fireballing electric arc-control device of arc extinguishing.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of electric arc-control device of the present invention, comprises housing, is located at the switch contact of described enclosure interior, also comprise a grid sheet devices for arc cutting, for the horizontal blowning installation that blows electric arc, for create the calutron in magnetic field between described moving contact and described fixed contact
Described grid sheet devices and described blowning installation are oppositely arranged, and described contact is between described grid sheet devices and described blowning installation, and described calutron is located at the both sides of described contact,
Described grid sheet devices comprises the many group metal gate sheets that are parallel to each other relative with described contact position, described in each, metal gate sheet is all connected with a drive unit, described in when described contact disconnects, drive unit drives described metal gate sheet to move in the middle of described contact, when described contact connects, described drive unit drives described metal gate sheet to shift out in the middle of described contact
Described blowning installation comprises the cylinder being installed in cylinder mounting blocks, one end of described cylinder is provided with a gas port, described gas port is relative with the position of described metal gate sheet, the piston rod coordinating with described cylinder stretches out with a sucker and is connected from the other end of described cylinder, described sucker is relative with one first electromagnet, described the first electromagnet and described cylinder mounting blocks are embedded at described enclosure interior
Described calutron comprises and is arranged at second, third electromagnet that described contact both sides are oppositely arranged,
When described contact is connected, the first electromagnet energising, the second electromagnet and the 3rd electromagnet power-off, when described contact disconnects, the first electromagnet power-off, the second electromagnet and the energising of the 3rd electromagnet.
Further, described drive unit comprises a slide bar, described slide bar one end is connected with metal gate sheet described in each, the other end of described slide bar is provided with the 4th electromagnet being embedded in a sliding sleeve, described slide bar is arranged in described sliding sleeve, described sliding sleeve is connected with described housing, between described sliding sleeve and described slide bar, is also provided with the first spring.
Further, described drive unit comprises a guide post, one end of described guide post is connected with metal gate sheet described in each, described guide post is arranged in a fairlead, the other end of described guide post is provided with a moving iron core, in the fairlead of the junction of described moving iron core and described guide post, be provided with one the 5th electromagnet, also comprise the second spring that the described moving iron core of a driving resets.
Further, described enclosure interior sealing and inside are filled with sulfur hexafluoride gas, and described housing comprises upper shell and the lower house of mutual fastening, also comprises that one for installing the left shell of blowning installation, for the right shell body of grid sheet devices is installed.
Further, described upper and lower casing is provided with the first boss or/and the first groove, described left and right housing be provided with described upper and lower casing on the first boss of arranging or/and suitable the second groove of the first groove or/and the second boss, first protruding or/and the first groove on the first groove and described left and right housing on described upper and lower casing is or/and the first boss is suitable, form the hermetically-sealed construction of Clothoid type, between described upper and lower casing and described left and right housing, go back Tu and be provided with fluid sealant.
Further, on described cylinder mount pad, offer groove or the through hole that is communicated with described housing inner chamber and described cylinder suction mouth.
Further, this device also comprises a control system, and described control system comprises the control module of described the first electromagnet of a driving, the 5th electromagnet energising or power-off, and described control module is also connected with second, third electromagnet by a timing module.
Further, the common right-angled trapezium that forms in the described many groups of metal gate sheet cross sections that are parallel to each other, trapezoidal right angle end is connected with guide post, and trapezoidal beveled end is also connected with an oblique block, and the material of described oblique block is insulation high-temperature-resistant material.
Further, described the first electromagnet, the 5th circuit of electromagnet and the circuit of described contact are connected.
Compared with prior art, the invention has the advantages that: by being provided for the grid sheet devices of arc cutting, for the horizontal blowning installation that blows electric arc, for create the calutron in magnetic field between described moving contact and described fixed contact, grid sheet devices is for being divided into a string short arc by electric arc, when acting on voltage between contact and being less than each short arc negative electrode dielectric strength sum, arc extinction, and by the horizontal electric arc that blows of blowning installation, electric arc can be blown down to length, by cooling and diffusion arc extinguishing, and electric arc is crooked to grid sheet devices, further strengthened the effect of grid sheet devices arc cutting, calutron for creating magnetic field between contact, by Lorentz force, make electric arc to the bending of grid sheet devices, also strengthen the effect of grid sheet devices arc cutting, by grid sheet devices, blowning installation, the calutron arc extinguishing that cooperatively interacts, and drive unit drives grid sheet devices to move to electric arc direction, blowning installation and calutron drive electric arc to move to grid sheet devices, improved greatly arc extinguishing speed.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the electric arc-control device of the embodiment of the present invention one;
Fig. 2 is along the cutaway view of A-A line in Fig. 1;
Fig. 3 is along the cutaway view of B-B line in Fig. 1;
Fig. 4 is the structural representation of the drive unit of the embodiment of the present invention two;
Fig. 5 is electrical principle block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention are made to more explicit defining.
embodiment mono-
Consult shown in Fig. 1 to Fig. 3, a kind of electric arc-control device provided by the invention, comprise housing 1, be located at the switch contact 2 of housing 1 inside, contact comprises a moving contact and a fixed contact, also comprises a grid sheet devices 3 for arc cutting, for the horizontal blowning installation 4 that blows electric arc, for create the calutron 5 in magnetic field between moving contact and fixed contact
Grid sheet devices 3 is oppositely arranged with blowning installation 4, and contact 2 is between grid sheet devices 3 and blowning installation 4, and calutron is located at the both sides of contact 2,
Grid sheet devices 3 comprises the many group metal gate sheets 31 that are parallel to each other relative with contact 2 positions, each metal gate sheet 31 is all connected with a drive unit 32, when contact 2 disconnects, drive unit 32 drives metal gate sheet 31 to move in the middle of contact 2, when contact 2 connects, drive unit 32 drives metal gate sheet 31 to shift out in the middle of contact 2
Blowning installation 4 comprises the cylinder 42 being installed in cylinder mounting blocks 41, one end of cylinder 42 is provided with a gas port 43, gas port 43 is relative with the position of metal gate sheet 31, the piston rod 44 coordinating with cylinder 42 stretches out with a sucker 45 and is connected from the other end of cylinder 42, sucker 45 is relative with one first electromagnet 46, the first electromagnet 46 and cylinder mounting blocks 41 are embedded at housing 1 inside
Calutron 5 comprises second, third electromagnet (51,52) that is arranged at contact 2 both sides and is oppositely arranged,
When contact 2 is connected, the first electromagnet 46 energisings, the second electromagnet 51 and the 3rd electromagnet 52 power-off, when contact 2 disconnects, the first electromagnet 46 power-off, the second electromagnet 51 and the 3rd electromagnet 52 energisings.
By being provided for the grid sheet devices 3 of arc cutting, for the horizontal blowning installation 4 that blows electric arc, for create the calutron 5 in magnetic field between moving contact and described fixed contact, grid sheet devices 3 is for being divided into electric arc a string short arc, when the voltage that acts on 1 of contact is less than each short arc negative electrode dielectric strength sum, arc extinction, and by the horizontal electric arc that blows of blowning installation 4, electric arc can be blown down to length, by cooling and diffusion arc extinguishing, and electric arc is to 3 bendings of grid sheet devices, further strengthened the effect of grid sheet devices 3 arc cuttings, calutron 5 for creating magnetic field between contact, by Lorentz force, make electric arc to 3 bendings of grid sheet devices, also strengthen the effect of grid sheet devices 3 arc cuttings, by grid sheet devices 3, blowning installation 4, calutron 5 arc extinguishing that cooperatively interacts, and drive unit 32 drives grid sheet devices 3 to move to electric arc direction, blowning installation 4 and calutron 5 drive electric arc to move to grid sheet devices 3, the time that makes electric arc enter grid sheet devices reduces greatly, improved arc extinguishing speed.
In the present embodiment, drive unit 32 comprises a guide post 331, one end of guide post 331 is connected with each metal gate sheet 31, guide post 331 is arranged in a fairlead 332, the other end of guide post 331 is provided with a moving iron core 333, in the fairlead 332 of the junction of moving iron core 333 and guide post 331, be provided with one the 5th electromagnet 334, also comprise the second spring 335 that the moving iron core 333 of a driving resets.By guide post 331, coordinate guiding with fairlead 332, when contact 1 disconnects generation electric arc, the 5th electromagnet 334 energisings, iron core 333 is moved in adhesive, thereby moving iron core 333 promotes guide post 331 promotions 31 to be moved to contact 1 direction, when the 5th electromagnet 334 power-off, by the meeting bullet effect of the second spring 335, metal gate sheet 31 is from resetting between contact 1.
Preferably, housing 1 inner sealing and inside are filled with sulfur hexafluoride gas, sulphur hexafluoride is inert gas, there is the effect of good inhibition electric arc, housing 1 comprises upper shell 11 and the lower house 12 of mutual fastening, also comprise that one for installing the left shell 13 of blowning installation 4, for the right shell body 14 of grid sheet devices 3 is installed, by upper, lower house (11, 12) and left, right shell body (13, 14) coordinate the common housing that forms this arc-control device, and because blowning installation 4 is installed in left shell 13, grid sheet devices 3 is installed in right shell body 14, when producing, each parts can be assembled separately, general assembly again after having assembled, there is easy streamlined production easy to assembly, on, lower house (11, 12) with left, right shell body (13, 14) between, by fluid sealant, connect, fluid sealant is used to each housing seal.On, lower house (11, 12) on, be provided with the first boss 111 or/and the first groove 112, left, right shell body (13, 14) be provided with upper, lower house (11, 12) upper the first boss 111 arranging or/and the second suitable groove 113 of the first groove 112 or/and the second boss 114, on, lower house (11, 12) the first boss 111 on is or/and the first groove 112 and a left side, right shell body (13, 14) the second groove 113 on is or/and the second boss 114 is suitable, by the first boss 111, coordinate with the second groove 113, the first groove 112 coordinates with the second boss 114, make to form between each housing the hermetically-sealed construction of Clothoid type, good seal performance, long service life.
On cylinder mount pad 41, offer the groove 411 or the through hole that are communicated with housing inner chamber 115 and cylinder suction mouth 116.For facilitating the air blowing of blowning installation 4 and air-breathing circulation.Consult shown in Fig. 4, this device also comprises a control system 6, control system 6 comprises the control module 61 of driving first electromagnet 46, the 5th electromagnet 334 energisings or power-off, and control module 61 is also connected with second, third electromagnet (51,53) by a timing module 62.When contactor control circuit need to be controlled contact 1 connection, control module 61 is controlled the first electromagnet 46, the 5th electromagnet 334 energisings, when contactor control circuit is controlled contact 1 disconnection, control module 61 is controlled the first electromagnet 46, the 5th electromagnet 334 power-off, and control the first electromagnet 51, the second electromagnet 52 energisings, when being energized to Preset Time, control module 61 is controlled the first electromagnet 51, the second electromagnet 52 power-off again, and timing module 62 is used to control module timing.
Optimum, the many groups of common right-angled trapezium that form in metal gate sheet 31 cross sections that are parallel to each other, trapezoidal right angle end is connected with guide post 331, and trapezoidal beveled end is also connected with an oblique block 33, and tiltedly building 33 material is insulation high-temperature-resistant material.The circuit of the first electromagnet 46, the 5th electromagnet 334 is connected with the circuit of contact 2.This tiltedly builds 33 when preventing that moving contact is separated with fixed contact, and the speed that moving contact can bullet does not catch up with metal gate sheet and enters the speed between moving contact and fixed contact.
embodiment bis-
Consult shown in Fig. 5, the main distinction of the present embodiment and embodiment mono-is, drive unit 32 comprises a slide bar 321, slide bar 321 one end are connected with each metal gate sheet 31, the other end of slide bar 321 is provided with the 4th electromagnet 322 being embedded in a sliding sleeve 323, slide bar 321 is arranged in sliding sleeve 323, and sliding sleeve 323 is connected with housing 1, is also provided with one first spring 324 between sliding sleeve 323 and slide bar 321.Also can drive metal gate sheet 31 also not affect enforcement of the present invention with other drive units 32.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range that claims were limited.
Claims (9)
1. an electric arc-control device, comprise housing (1), be located at the inner switch contact (2) of described housing (1), described contact comprises a moving contact and a fixed contact, it is characterized in that: also comprise a grid sheet devices (3) for arc cutting, for the horizontal blowning installation (4) that blows electric arc, for create the calutron (5) in magnetic field between described moving contact and described fixed contact
Described grid sheet devices (3) is oppositely arranged with described blowning installation (4), and described contact (2) is positioned between described grid sheet devices (3) and described blowning installation (4), and described calutron is located at the both sides of described contact (2),
Described grid sheet devices (3) comprises the many group metal gate sheets (31) that are parallel to each other relative with described contact (2) position, described in each, metal gate sheet (31) is all connected with a drive unit (32), described in when described contact (2) disconnects, drive unit (32) drives described metal gate sheet (31) to move in the middle of described contact (2), when described contact (2) connects, described drive unit (32) drives described metal gate sheet (31) to shift out in the middle of described contact (2)
Described blowning installation (4) comprises the cylinder (42) being installed in cylinder mounting blocks (41), one end of described cylinder (42) is provided with a gas port (43), described gas port (43) is relative with the position of described metal gate sheet (31), the piston rod (44) coordinating with described cylinder (42) stretches out with a sucker (45) and is fixedly connected with from the other end of described cylinder (42), described sucker (45) is relative with one first electromagnet (46), described the first electromagnet (46) and described cylinder mounting blocks (41) are embedded at described housing (1) inside, described blowning installation (4) also comprises the first spring (47) that the described piston rod of a driving (44) resets,
Described calutron (5) comprises and is arranged at the second and the 3rd electromagnet (51,52) that described contact (2) both sides are oppositely arranged,
When described contact (2) is connected, the first electromagnet (46) energising, when the first electromagnet (46) is switched on, described sucker (45) is attracted, and described the first spring (47) is compressed; When described contact (2) is connected, the second electromagnet (51) and the 3rd electromagnet (52) power-off, when described contact (2) disconnects, the first electromagnet (46) power-off, the second electromagnet (51) and the 3rd electromagnet (52) energising;
Described blowning installation (4) blows to described grid sheet devices (3) in a longitudinal direction electric arc being blown down, described calutron (5) in a lateral direction by electric arc to described grid sheet devices (3) bending, described grid sheet devices (3) is for being divided into consecutive short arc by the electric arc to self bending, under the air blowing effect of a period of time of described blowning installation (4), described consecutive short arc can be blown out;
Housing (1) comprises upper shell (11) and the lower house (12) of mutual fastening, also comprise that one for installing the left shell (13) of blowning installation (4), be used for installing the right shell body (14) of grid sheet devices (3), by upper and lower casing (11,12) and left and right housing (13,14), coordinate the common housing that forms this arc-control device, and because blowning installation (4) is installed in left shell (13), grid sheet devices (3) is installed in right shell body (14), when producing, each parts can be assembled separately, general assembly again after having assembled.
2. electric arc-control device according to claim 1, it is characterized in that: described drive unit (32) comprises a slide bar (321), described slide bar (321) one end is connected with metal gate sheet (31) described in each, the other end of described slide bar (321) is provided with the 4th electromagnet (322) being embedded in a sliding sleeve (323), described slide bar (321) is arranged in described sliding sleeve (323), described sliding sleeve (323) is connected with described housing (1), is also provided with one second spring (324) between described sliding sleeve (323) and described slide bar (321).
3. electric arc-control device according to claim 1, it is characterized in that: described drive unit (32) comprises a guide post (331), one end of described guide post (331) is connected with metal gate sheet (31) described in each, described guide post (331) is arranged in a fairlead (332), the other end of described guide post (331) is provided with a moving iron core (333), in the fairlead (332) of the junction of described moving iron core (333) and described guide post (331), be provided with one the 5th electromagnet (334), also comprise the 3rd spring (335) that a described moving iron core of driving (333) resets.
4. electric arc-control device according to claim 3, it is characterized in that: described housing (1) inner sealing and inside are filled with sulfur hexafluoride gas, described housing (1) comprises upper shell (11) and the lower house (12) of mutual fastening, also comprise that one for installing the left shell (13) of blowning installation (4), for the right shell body (14) of grid sheet devices (3) is installed.
5. electric arc-control device according to claim 4, it is characterized in that: on described, lower house (11, 12) be provided with the first boss (111) or/and the first groove (112), a described left side, right shell body (13, 14) be provided with described on, lower house (11, 12) upper the first boss (111) arranging or/and suitable the second groove (113) of the first groove (112) or/and the second boss (114), on described, lower house (11, 12) the first boss (111) on is or/and the first groove (112) and a described left side, right shell body (13, 14) the second groove (113) on is or/and the second boss (114) is suitable, form the hermetically-sealed construction of Clothoid type, on described, lower house (11, 12) with a described left side, right shell body (13, 14) between, go back Tu and be provided with fluid sealant.
6. electric arc-control device according to claim 4, is characterized in that: on described cylinder mount pad (41), offer the groove (411) or the through hole that are communicated with described housing inner chamber (115) and described cylinder suction mouth (116).
7. electric arc-control device according to claim 6, it is characterized in that: this device also comprises a control system (6), described control system (6) comprises the control module (61) of described the first electromagnet of a driving (46), the 5th electromagnet (334) energising or power-off, and described control module (61) is also connected with second, third electromagnet (51,53) by a timing module (62).
8. electric arc-control device according to claim 7, it is characterized in that: described many groups of metal gate sheet (31) cross sections that are parallel to each other form a right-angled trapezium jointly, trapezoidal right angle end is connected with guide post (331), trapezoidal beveled end is also connected with one and tiltedly builds (33), and the material of described oblique block (33) is insulation high-temperature-resistant material.
9. electric arc-control device according to claim 6, is characterized in that: the circuit of described the first electromagnet (46), the 5th electromagnet (334) is connected with the circuit of described contact (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410404402.8A CN104124086B (en) | 2014-08-18 | 2014-08-18 | A kind of electric arc-control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410404402.8A CN104124086B (en) | 2014-08-18 | 2014-08-18 | A kind of electric arc-control device |
Publications (2)
| Publication Number | Publication Date |
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| CN104124086A true CN104124086A (en) | 2014-10-29 |
| CN104124086B CN104124086B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410404402.8A Active CN104124086B (en) | 2014-08-18 | 2014-08-18 | A kind of electric arc-control device |
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| CN109473301A (en) * | 2018-09-12 | 2019-03-15 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of intelligent switch and its control method |
| CN110098086A (en) * | 2019-05-06 | 2019-08-06 | 国网江西省电力有限公司鹰潭供电分公司 | A kind of electric power network high pressure arc-extinction device |
| CN110120285A (en) * | 2019-06-12 | 2019-08-13 | 西南交通大学 | A kind of arcing horn arc-control device |
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| CN101064226A (en) * | 2006-04-27 | 2007-10-31 | 株式会社东芝 | Air blowing breaker |
| US20090090697A1 (en) * | 2007-10-03 | 2009-04-09 | Areva T&D Sa | Interrupting chamber of a circuit-breaker having two compression volumes |
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| CN101000837A (en) * | 2006-01-13 | 2007-07-18 | 河南平高电气股份有限公司 | High voltage circuit breaker |
| CN101064226A (en) * | 2006-04-27 | 2007-10-31 | 株式会社东芝 | Air blowing breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109473301A (en) * | 2018-09-12 | 2019-03-15 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of intelligent switch and its control method |
| CN110098086A (en) * | 2019-05-06 | 2019-08-06 | 国网江西省电力有限公司鹰潭供电分公司 | A kind of electric power network high pressure arc-extinction device |
| CN110120285A (en) * | 2019-06-12 | 2019-08-13 | 西南交通大学 | A kind of arcing horn arc-control device |
| CN110120285B (en) * | 2019-06-12 | 2020-03-31 | 西南交通大学 | Arc extinguishing device for arcing horn |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104124086B (en) | 2016-05-25 |
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