CN202678160U - Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch - Google Patents
Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch Download PDFInfo
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- CN202678160U CN202678160U CN 201220254588 CN201220254588U CN202678160U CN 202678160 U CN202678160 U CN 202678160U CN 201220254588 CN201220254588 CN 201220254588 CN 201220254588 U CN201220254588 U CN 201220254588U CN 202678160 U CN202678160 U CN 202678160U
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Abstract
The utility model discloses a mining kilovolt-level double-pole single-breakpoint air isolation reversing switch, and relates to an electrical element. A double-pole single-breakpoint moving contact and grid type magnetic quenching devices are adopted. Working current switching-on/off capability reaches more than 630A. The grid type magnetic quenching devices are fixed in a transverse isolation groove of an upper cover. The transverse isolation groove of the upper cover and a corresponding transverse isolation groove of an upper cavity of an insulating seat form a closed space in which the grid type magnetic quenching devices are positioned. Each grid type magnetic quenching device comprises a cover, arc quenching grids, a run-on plate, a magnetic blowout coil, a concentrating flux core and a concentrating flux plate. The arc root of an opening arc is shifted to the run-on plates which have the same electric level under the action of an electric field, the blowout coils which are connected with the run-on plates generate an excitation field through arc current, the excitation field generates an arc blowing magnetic field on the two concentrating flux plates through the concentrating flux cores, and the opening arc is struck into the arc quenching grids under the action of the arc blowing magnetic field to be quenched.
Description
Technical field
The utility model relates to a kind of electric component, be specifically related to the KV level double-pole air-type separating commutator switch that large-size machine uses under a kind of coal mine, also can be used for the isolation reversing switch of the KV level magnetic starter configuration that motor uses on other mining equiment.
Background technology
The air-type separating commutator switch that use under the present domestic coal mine and other mine adopts GHK series reversing switch, " referring to patent CN2048236UCN201956259U " mostly.Its switch contact is both arms clapper-type structure, and every arm is equipped with three commutation moving contacts, and three commutation moving contacts engage with fixed contact respectively on the switch operation mechanism driving left and right sides pivoted arm, realize isolation and commutation function.Clapper-type contact pressure is little, and scaling loss is used dangerous easily.
A kind of Allenwest-Wallacetown A76 isolation reversing switch occurs on the market in recent years, switch contact adopts hilted broadsword single-break moving contact, and this volume of switch is larger, when using under the coal mine, owing to can't use by the restriction in plant equipment space.
More than two kinds of common weak points of air-type separating commutator switch be:
1, the make-break capacity of a lot of equipment requirements of large coal mine isolation reversing switch is more than 630A, more than the make-break capacity of two kinds of reversing switches only have 450A, can't satisfy instructions for use.
2, the arc-control device of reversing switch employing is grating arc-extinguishing chamber's structure, does not have blowout coil and conducting magnet core, also just arc current can not be produced excitation, excitation produces arc blow-out magnetic field by conducting magnet core between two magnetic conductive boards, arc quenching effect is poor, when especially using under coal mine, brings potential safety hazard.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of mine kilovolt level double-pole single-break air-type separating commutator switch, adopts double-pole single-break moving contact and magnetic blow-out grid sheet arc-control device, and the operating current make-break capacity reaches more than the 630A.
The utility model is achieved by the following technical solution: a kind of mine kilovolt level double-pole single-break air-type separating commutator switch comprises insulating base, loam cake, forward fixed contact, reverse fixed contact, double-pole single-break moving contact, driving shaft and arc-control device.Described insulating base is the rectangular box type structure, and the horizontal separate slot at case structure middle part is divided into epicoele and cavity of resorption with casing, and described forward fixed contact and reverse fixed contact are installed in the horizontal separate slot of epicoele.The cavity of resorption of insulating base vertically arranges driving shaft, and the square hole of described double-pole single-break moving contact afterbody is sleeved on the square shaft of driving shaft.Double-pole single-break moving contact is connected with motor by the output steering stem comp.Described loam cake is installed in the top of insulating base, and described arc-control device is installed and covered, and interrupter cartridge is equipped with two groups, and two groups of arc-control devices lay respectively at the top of forward fixed contact and reverse fixed contact; It is characterized in that: described arc-control device is magnetic blow-out grid chip arc-control device.Described magnetic blow-out grid chip arc-control device is fixed in the horizontal separate slot of loam cake, and the horizontal separate slot that the horizontal separate slot of loam cake is corresponding with the insulating base epicoele forms the space of a sealing, and magnetic blow-out grid chip arc-control device is positioned at the space of described sealing.
Described magnetic blow-out grid chip arc-control device comprises: case, arc extinguishing grid pieces, run-on tab, blowout coil, conducting magnet core and magnetic conductive board.Described case is installed in and covers, and described arc extinguishing grid pieces is multi-disc, and the multi-disc arc extinguishing grid pieces is uniform to be installed in the case.Described run-on tab between arc extinguishing grid pieces and forward and reverse fixed contact, run-on tab and forward and reverse fixed contact equipotential.Described blowout coil is connected with Connection Block with run-on tab respectively, and described Connection Block is installed in the caudal peduncle section of magnetic blow-out grid sheet arc-control device, and Connection Block is connected with forward fixed contact or reverse fixed contact contact respectively by the arc extinguishing conducting strip.Conducting magnet core is arranged in the blowout coil, and described magnetic conductive board is two, and two magnetic conductive boards are separately fixed at the two ends of conducting magnet core.In the forward and reverse fixed contact separating brake process, and produce separating brake electric arc between the double-pole single-break moving contact, the arc root of described separating brake electric arc is displaced downwardly on the run-on tab at electric field action, blowout coil produces excitation by arc current, described excitation produces arc blow-out magnetic field by conducting magnet core between two magnetic conductive boards, separating brake electric arc is introduced into arc extinguishing grid pieces and extinguishes under described arc blow-out magnetic fields.
Good effect of the present utility model is:
1, adopt double-pole single-break moving contact, it is large that the dynamic/static contact contact steps up power, and contact resistance is little, is not easy to burn, and is safe and reliable.
2, arc-control device adopts the arc extinguishing structure that forces of magnetic blow-out grid sheet arc extinguishing, and arc quenching effect is good, is particularly useful for using under the coal mine, and is safe and reliable.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is electrical schematic diagram of the present utility model.
Fig. 2 is the utility model structural representation.
Fig. 3 is the A-A profile of Fig. 2.
Among the figure: 1, insulating base, 2, forward fixed contact, 3, reverse fixed contact, 4, magnetic blow-out grid sheet arc-control device, 4-1, case, 4-2, arc extinguishing grid pieces, 4-3, run-on tab, 4-4, blowout coil, 4-5, conducting magnet core, 4-6, magnetic conductive board, 4-7, Connection Block, 5, driving shaft, 6, double-pole single-break moving contact, 7, output steering stem comp, 8, loam cake, 9, the arc extinguishing conducting strip, 10, the commutation line, U, V, W, motor U phase line, V phase line, W phase line, L1, L2, L3, three phase mains L1 phase, L2 phase, L3 phase.
Embodiment
Such as Fig. 2, shown in Figure 3: a kind of mine kilovolt level double-pole single-break air-type separating commutator switch comprises insulating base 1, loam cake 8, forward fixed contact 2, oppositely fixed contact 3, double-pole single-break moving contact 6, driving shaft 5 and arc-control device.Described insulating base 1 is the rectangular box type structure, and the horizontal separate slot at case structure middle part is divided into epicoele and cavity of resorption with casing, and described forward fixed contact 2 and reverse fixed contact 3 are installed in the horizontal separate slot of epicoele.The cavity of resorption of insulating base 1 vertically arranges driving shaft 5, and the square hole of described double-pole single-break moving contact 6 afterbodys is sleeved on the square shaft of driving shaft 5; Double-pole single-break moving contact 6 is connected with motor by output steering stem comp 7.Described loam cake 8 is installed in the top of insulating base 1, and described arc-control device is installed on the loam cake 8, and interrupter cartridge is equipped with two groups, and two groups of arc-control devices lay respectively at the top of forward fixed contact 2 and reverse fixed contact 3.It is characterized in that: described arc-control device is magnetic blow-out grid chip arc-control device 4.Described magnetic blow-out grid chip arc-control device 4 is fixed in the horizontal separate slot of loam cake 8, and the horizontal separate slot that the horizontal separate slot of loam cake 8 is corresponding with insulating base 1 epicoele forms the space of a sealing, and magnetic blow-out grid chip arc-control device 4 is positioned at the space of described sealing.
Described magnetic blow-out grid chip arc-control device 4 comprises: case 4-1, arc extinguishing grid pieces 4-2, run-on tab 4-3, blowout coil 4-4, conducting magnet core 4-5 and magnetic conductive board 4-6.Described case 4-1 is installed on the loam cake 8, and described arc extinguishing grid pieces 4-2 is multi-disc, and multi-disc arc extinguishing grid pieces 4-2 is uniform to be installed in the case 4-1.Described run-on tab 4-3 between arc extinguishing grid pieces 4-2 and forward and reverse fixed contact 2,3, run-on tab 4-3 and forward and reverse fixed contact 2,3 equipotentials.Described blowout coil 4-4 is connected with Connection Block 4-7 with run-on tab 4-3 respectively, described Connection Block 4-7 is installed in the caudal peduncle section of magnetic blow-out grid sheet arc-control device 4, and Connection Block 4-7 is connected with forward fixed contact 2 or 3 contacts of reverse fixed contact respectively by arc extinguishing conducting strip 9.Conducting magnet core 4-5 is arranged in the blowout coil 4-4.Described magnetic conductive board 4-6 is two, and two magnetic conductive board 4-6 are separately fixed at the two ends of conducting magnet core 4-5.In forward and reverse fixed contact 2, the 3 separating brake processes, and produce separating brake electric arc between the double-pole single-break moving contact 6, the arc root of described separating brake electric arc is displaced downwardly on the run-on tab 4-3 at electric field action, blowout coil 4-4 produces excitation by arc current, described excitation produces arc blow-out magnetic field by conducting magnet core 4-5 between two magnetic conductive board 4-6, separating brake electric arc is introduced into arc extinguishing grid pieces 4-2 and extinguishes under described arc blow-out magnetic fields.
As shown in Figure 1: the electrical principle of mine kilovolt level double-pole air-type separating commutator switch is as follows: the isolation reversing switch is provided with three groups of reversing units, wherein forward fixed contact 2 connects three phase mains L1 phase, L2 phase, L3 phase, and double-pole single-break moving contact 6 connects respectively motor U phase line, V phase line, W phase line.Oppositely fixed contact 3 is connected with forward fixed contact 2 by commutation line 10.
Such as Fig. 1, Fig. 2, shown in Figure 3: forward closing position, oppositely closing position and three function digits of open position have been opened in this isolation commutation:
1, when the isolation reversing switch goes to the forward closing position, double-pole single-break moving contact 6 is connected forward fixed contact 2, and power supply L1 connects motor U phase line, and power supply L2 connects motor V phase line, the running of motor forward.
2, when the isolation reversing switch goes to reverse closing position, double-pole single-break moving contact 6 turn-on reversal fixed contacts 3, power supply L1 are connected motor V phase line, and power supply L2 connects motor U phase line, motor antiport.
3, when open position at the forward closing position with oppositely between the closing position, double-pole single-break moving contact 6 is neither connected with forward fixed contact 2, does not also connect with reverse fixed contact 3, motor shuts down.
Wherein open position is divided into again forward separating brake and reverse two positions of separating brake.When wherein being in the forward open position, double-pole single-break moving contact 6 is between forward closing position and reverse closing position, and close forward closing position.When being in reverse open position, double-pole single-break moving contact 6 is also at the forward closing position with oppositely between the closing position, but near reverse closing position.
In forward separating brake and reverse separating brake process, produce separating brake electric arc between double-pole single- break moving contact 6 and 2, the forward and reverse fixed contact 2,3, under the effect of electric field, electric arc arc root moves on to it on the equipotential run-on tab 4-3 on the forward and reverse fixed contact 2,3, and the blowout coil 4-4 that links to each other with run-on tab 4-3 produces excitation by arc current.Described excitation produces arc blow-out magnetic field by conducting magnet core 4-5 between two magnetic conductive board 4-6.Separating brake electric arc is introduced in the arc extinguishing district of magnetic blow-out grid sheet 4-2 under the effect in arc blow-out magnetic field, and it extinguishes in the arc extinguishing district of magnetic blow-out grid sheet 4-2.
Claims (2)
1. a mine kilovolt level double-pole single-break air-type separating commutator switch comprises insulating base (1), loam cake (8), forward fixed contact (2), reverse fixed contact (3), double-pole single-break moving contact (6), driving shaft (5) and arc-control device; Described insulating base (1) is the rectangular box type structure, and the horizontal separate slot at case structure middle part is divided into epicoele and cavity of resorption with casing, and described forward fixed contact (2) and reverse fixed contact (3) are installed in the horizontal separate slot of epicoele; The cavity of resorption of insulating base (1) vertically arranges driving shaft (5), and the square hole of described double-pole single-break moving contact (6) afterbody is sleeved on the square shaft of driving shaft (5); Double-pole single-break moving contact (6) is connected with motor by output steering stem comp (7); Described loam cake (8) is installed in the top of insulating base (1), and described arc-control device is installed on the loam cake (8); Interrupter cartridge is equipped with two groups, and two groups of arc-control devices lay respectively at the top of forward fixed contact (2) and reverse fixed contact (3); It is characterized in that: described arc-control device is magnetic blow-out grid chip arc-control device (4); Described magnetic blow-out grid chip arc-control device (4) is fixed in the horizontal separate slot of loam cake (8), the horizontal separate slot that the horizontal separate slot of loam cake (8) is corresponding with insulating base (1) epicoele forms an enclosure space, and magnetic blow-out grid chip arc-control device (4) is positioned at described enclosure space.
2. mine kilovolt level double-pole single-break air-type separating commutator switch according to claim 1, it is characterized in that: described magnetic blow-out grid chip arc-control device (4) comprising: case (4-1), arc extinguishing grid pieces (4-2), run-on tab (4-3), blowout coil (4-4), conducting magnet core (4-5) and magnetic conductive board (4-6); Described case (4-1) is installed on the loam cake (8), and described arc extinguishing grid pieces (4-2) is multi-disc, and multi-disc arc extinguishing grid pieces (4-2) is uniform to be installed in the case (4-1); Described run-on tab (4-3) is positioned between arc extinguishing grid pieces (4-2) and the forward and reverse fixed contact (2,3), run-on tab (4-3) and forward and reverse fixed contact (2,3) equipotential; Described blowout coil (4-4) is connected with Connection Block (4-7) with run-on tab (4-3) respectively, described Connection Block (4-7) is installed in the caudal peduncle section of magnetic blow-out grid sheet arc-control device (4), and Connection Block (4-7) is connected with forward fixed contact (2) or reverse fixed contact (3) contact respectively by arc extinguishing conducting strip (9); Conducting magnet core (4-5) is arranged in the blowout coil (4-4); Described magnetic conductive board (4-6) is two, and two magnetic conductive boards (4-6) are separately fixed at the two ends of conducting magnet core (4-5); In forward and reverse fixed contact (2,3) the separating brake process, and produce separating brake electric arc between the double-pole single-break moving contact (6), the arc root of described separating brake electric arc is displaced downwardly on the run-on tab (4-3) at electric field action; Blowout coil (4-4) produces excitation by arc current, and described excitation produces arc blow-out magnetic field by conducting magnet core (4-5) between two magnetic conductive boards (4-6), and separating brake electric arc is introduced into arc extinguishing grid pieces (4-2) and extinguishes under described arc blow-out magnetic fields.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220254588 CN202678160U (en) | 2012-06-01 | 2012-06-01 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220254588 CN202678160U (en) | 2012-06-01 | 2012-06-01 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
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| Publication Number | Publication Date |
|---|---|
| CN202678160U true CN202678160U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220254588 Expired - Fee Related CN202678160U (en) | 2012-06-01 | 2012-06-01 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
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| CN (1) | CN202678160U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709083A (en) * | 2012-06-01 | 2012-10-03 | 徐州志信电气科技有限公司 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
| KR101818565B1 (en) | 2016-10-21 | 2018-01-15 | 주식회사 우진기전 | Arc chute of magnetic contactor |
-
2012
- 2012-06-01 CN CN 201220254588 patent/CN202678160U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709083A (en) * | 2012-06-01 | 2012-10-03 | 徐州志信电气科技有限公司 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
| KR101818565B1 (en) | 2016-10-21 | 2018-01-15 | 주식회사 우진기전 | Arc chute of magnetic contactor |
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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: 20130116 Termination date: 20150601 |
|
| EXPY | Termination of patent right or utility model |