CN102683093A - Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines - Google Patents
Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines Download PDFInfo
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- CN102683093A CN102683093A CN2012101777719A CN201210177771A CN102683093A CN 102683093 A CN102683093 A CN 102683093A CN 2012101777719 A CN2012101777719 A CN 2012101777719A CN 201210177771 A CN201210177771 A CN 201210177771A CN 102683093 A CN102683093 A CN 102683093A
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Abstract
The invention discloses a kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines and relates to an electric element. A double-pole double-breakpoint movable contact and a magnetic blow grid arc-extinction device are utilized, and make-break capacity of working current can reach more than 630 A. Casings of the arc-extinction device are installed at the upper end and the lower end of an insulation seat respectively and serve as an upper cover and a lower cover of a switch casing, a sealing space is defined by the casings and the insulation seat, and the magnetic blow grid arc-extinction device is arranged in the sealed space. The magnetic blow grid arc-extinction device comprises the casings, arc-extinction grids, an arc striking plate, a magnetic blow coil, a magnetism conduction iron core and magnetism conduction plates. Under the effect of an electric field, the arc root of a brake-separating arc moves to the arc striking plate with the same electric potential as the arc root, the magnetic blow coil connected with the arc striking plate generates excitation through arc current, and the excitation generates an arc blowing magnetic field between two magnetism conduction plates through the magnetism conduction iron core. Under the effect of the arc blowing magnetic field, the brake-separating arc is introduced into arc-extinction areas of the arc-extinction grids to be extinguished.
Description
Technical field
The present invention relates to mining electric switch, specifically is that a kind of mining kilovolt of level double-pole double break point air type isolated reversing switch, can be used as the isolated from power and switching-over purposes of 3.3kV mine magnetic starter class switch.
Technical background
In the domestic 3.3kV level electrical system, mainly use drum-type to isolate reversing switch, this kind switch does not have breaking capacity.The double-breakpoint structure reversing switch is applicable to middle piezoelectricity gas system; In the external 3.3kV level electrical system; Baldwin&francis company adopts the bridging contact of double break point to add the isolation reversing switch of magnetic blow-out grating arc-extinguishing chamber structure; The Allenwest Wallacetown B77 of company switch adopts hilted broadsword double break point to add grating arc-extinguishing chamber's structure, has adopted the method for two groups of unit parallel connections to increase loop break-make capacity, and this isolation reversing switch volume is bigger.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention provides a kind of mining kilovolt of level double-pole double break point air type to isolate reversing switch, adopts double-pole double-breakpoint contact system and the combining structure of forcing magnetic blow-out grid sheet arc quenching system.
The present invention realizes through following technical scheme: a kind of mining kilovolt of level double-pole double break point air type isolated reversing switch, comprising: insulating base, fixed contact, double-pole double break point moving contact and driving shaft.Described insulating base is the rectangle case structure, and double-pole double break point moving contact is installed in the center of insulating base, and there are horizontal separate slot and double-pole double break point moving contact in the middle part of insulating base, and double-pole double break point moving contact is by drive shaft.Described horizontal separate slot and double-pole double break point moving contact are divided into the inner chamber of insulating base four Space Angle of relative closure; Described static contact has four, and they are respectively first static contact, second static contact, the 3rd static contact, the 4th static contact, and four static contacts are installed in respectively in four Space Angle of insulating base; In parallel between first static contact and second static contact by connecting plate, as the power supply input point; The outside of four static contacts is respectively equipped with arc-control device; It is characterized in that: described arc-control device is a magnetic blow-out grid chip arc-control device.
Said magnetic blow-out grid sheet arc-control device comprises: case, arc extinguishing grid pieces, run-on tab, blowout coil, conducting magnet core and magnetic conductive board.Described case is two, and two cases are installed in the insulating base upper/lower terminal respectively, and case opens the upper and lower cover plate effect of switch case, and case and insulating base are formed enclosure space.Described arc extinguishing grid pieces is a multi-disc, and the multi-disc arc extinguishing grid pieces is arranged and is installed in the case.Described run-on tab lays respectively between the fixed contact of arc extinguishing grid pieces and correspondence, run-on tab and corresponding fixed contact equipotential.Described blowout coil links to each other with Connection Block with run-on tab respectively, and described Connection Block is installed in the lower of magnetic blow-out grid sheet arc-control device, and Connection Block is separately fixed on the corresponding fixed contact.In the described blowout coil conducting magnet core is arranged.Described magnetic conductive board is two, and two magnetic conductive boards are separately fixed at the two ends of conducting magnet core; In the separating brake process, produce separating brake electric arc between double-pole double break point moving contact and the corresponding fixed 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 through arc current, and said excitation produces arc blow-out magnetic field through conducting magnet core between two magnetic conductive boards, and separating brake electric arc is introduced into arc extinguishing grid pieces and extinguishes under described arc blow-out the action of a magnetic field.
Good effect of the present invention is:
1, adopt double-pole double break point moving contact, dynamic/static contact contacts that to step up power big, 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 accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 electrical schematic diagram of the present invention.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is the A-A profile of Fig. 2.
Among the figure: 1, insulating base, 2, first fixed contact, 3, second fixed contact, the 4, the 3rd fixed contact; 5, the 4th fixed contact, 6, double-pole double break point moving contact, 7, driving shaft, 8, magnetic blow-out grid sheet arc-control device; 8-1, case, 8-2, arc extinguishing grid pieces, 8-3, run-on tab, 8-4, blowout coil; 8-5, conducting magnet core, 8-6, magnetic conductive board, 8-7, Connection Block, 9, connecting plate.
Embodiment
Shown in the electrical schematic diagram as shown in Figure 1: with respect to three phase mains L1, L2, L3, double-pole double break point air type is isolated reversing switch and is provided with three working cells: first fixed contact 2 of first module, 3 parallel connections of second fixed contact, insert power supply L1.When double-pole double break point moving contact 6 went to the forward closing position, first fixed contact 2, the 4th fixed contact 5 were connected, and power supply L1 connects motor U phase.When double-pole double break point moving contact 6 went to reverse closing position, second fixed contact 3, the 3rd fixed contact 4 were connected, and power supply L1 connects motor V phase; Realize the motor commutation purpose.
Like Fig. 2, shown in Figure 3: a kind of mining kilovolt of level double-pole double break point air type isolation reversing switch comprises: insulating base 1, fixed contact, double-pole double break point moving contact 6 and driving shaft 7.Described insulating base 1 is the rectangle case structure, and double-pole double break point moving contact 6 is installed in the center of insulating base 1, and there are horizontal separate slot and double-pole double break point moving contact 6 in the middle part of insulating base 1, and double-pole double break point moving contact 6 is driven by driving shaft 7.Described horizontal separate slot and double-pole double break point moving contact 6 are divided into the inner chamber of insulating base 1 four Space Angle of relative closure; Described static contact has four, and they are respectively that first static contact 2, second static contact 3, the 3rd static contact 4 and 5, four static contacts of the 4th static contact are installed in respectively in 1 four Space Angle of insulating base; Between first static contact 2 and second static contact 3 by connecting plate 9 parallel connections, as the power supply input point.The outside of four fixed contacts is respectively equipped with arc-control device; It is characterized in that: described arc-control device is a magnetic blow-out grid chip arc-control device 8.
Said magnetic blow-out grid sheet arc-control device 8 comprises: case 8-1, arc extinguishing grid pieces 8-2, run-on tab 8-3, blowout coil 8-4, conducting magnet core 8-5 and magnetic conductive board 8-6.Described case 8-1 is two, and two case 8-1 are installed in insulating base 1 upper/lower terminal respectively, and case 8-1 opens the upper and lower cover plate effect of switch case, and case 8-1 and insulating base 1 are formed enclosure space.Described arc extinguishing grid pieces 8-2 is a multi-disc, and multi-disc arc extinguishing grid pieces 8-2 arranges and is installed in the case 8-1.Described run-on tab 8-3 lays respectively between the fixed contact of arc extinguishing grid pieces 8-2 and correspondence, run-on tab 8-3 and corresponding fixed contact equipotential.Described blowout coil 8-4 links to each other with Connection Block 8-7 with run-on tab 8-3 respectively, and described Connection Block 8-7 is installed in the lower of magnetic blow-out grid sheet arc-control device 8, and Connection Block 8-7 is separately fixed on the corresponding fixed contact.In the described blowout coil 8-4 conducting magnet core 8-5 is arranged; Described magnetic conductive board 8-6 is two, and two magnetic conductive board 8-6 are separately fixed at the two ends of conducting magnet core 8-5.
As shown in Figure 2: first fixed contact 2, second fixed contact 3 are by connecting plate 9 parallel connections, as the power supply input point.Double-pole double break point moving contact 6 rotates around driving shaft 7 axle center under the effect of driving shaft 7, realizes the operation in tandem of forward combined floodgate-forward separating brake-reverse separating brake-reverse combined floodgate-reverse separating brake-forward separating brake-forward closing position.
Reversing switch is in forward separating brake and reverse separating brake process, and upper and lower two breakpoints of double-pole double break point moving contact 6 produce separating brake electric arc simultaneously, produces separating brake electric arc between double-pole double break point moving contact 6 and the corresponding fixed contact.The arc root of described separating brake electric arc is displaced downwardly on the run-on tab 8-3 at electric field action; Blowout coil 8-4 produces excitation through arc current, and said excitation produces arc blow-out magnetic field through conducting magnet core 8-5 between two magnetic conductive board 8-6, and separating brake electric arc is introduced into arc extinguishing grid pieces 8-2 and extinguishes under described arc blow-out the action of a magnetic field.
Claims (2)
1. one kind mining kilovolt level double-pole double break point air type isolated reversing switch, comprising: insulating base (1), static contact, double-pole double break point moving contact (6) and driving shaft (7); Described insulating base (1) is the rectangle case structure; Double-pole double break point moving contact (6) is installed in the center of insulating base (1); There are horizontal separate slot and double-pole double break point moving contact (6) in the middle part of insulating base (1), and double-pole double break point moving contact (6) is driven by driving shaft (7); Described horizontal separate slot and double-pole double break point moving contact (6) are divided into the inner chamber of insulating base (1) four Space Angle of relative closure; Described static contact has four, and they are respectively first static contact (2), second static contact (3), the 3rd static contact (4) and the 4th static contact (5); Four static contacts are installed in respectively in (1) four Space Angle of insulating base; Between first static contact (2) and second static contact (3) by connecting plate (9) parallel connection, as the power supply input point; The outside of four static contacts is respectively equipped with arc-control device; It is characterized in that: described arc-control device is a magnetic blow-out grid chip arc-control device (8).
2. mining kilovolt of level double-pole double break point air type according to claim 1 isolated reversing switch, and it is characterized in that: said magnetic blow-out grid sheet arc-control device (8) comprising: case (8-1), arc extinguishing grid pieces (8-2), run-on tab (8-3), blowout coil (8-4), conducting magnet core (8-5) and magnetic conductive board (8-6); Described case (8-1) is two, and two cases (8-1) are installed in insulating base (1) upper/lower terminal respectively, and case (8-1) opens the upper and lower cover plate effect of switch case, and case (8-1) is formed enclosure space with insulating base (1); Described arc extinguishing grid pieces (8-2) is a multi-disc, and multi-disc arc extinguishing grid pieces (8-2) is arranged and is installed in the case (8-1); Described run-on tab (8-3) lays respectively between the fixed contact of arc extinguishing grid pieces (8-2) and correspondence, run-on tab (8-3) and corresponding fixed contact equipotential; Described blowout coil (8-4) links to each other with Connection Block (8-7) with run-on tab (8-3) respectively, and described Connection Block (8-7) is installed in the lower of magnetic blow-out grid sheet arc-control device (8), and Connection Block (8-7) is separately fixed on the corresponding fixed contact; Conducting magnet core (8-5) is arranged in the described blowout coil (8-4); Described magnetic conductive board (8-6) is two, and two magnetic conductive boards (8-6) are separately fixed at the two ends of conducting magnet core (8-5); In the separating brake process, produce separating brake electric arc between double-pole double break point moving contact (6) and the corresponding fixed contact, the arc root of described separating brake electric arc is displaced downwardly on the run-on tab (8-3) at electric field action; Blowout coil (8-4) produces excitation through arc current, and said excitation produces arc blow-out magnetic field through conducting magnet core (8-5) between two magnetic conductive boards (8-6), and separating brake electric arc is introduced into arc extinguishing grid pieces (8-2) and extinguishes under described arc blow-out the action of a magnetic field.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101777719A CN102683093A (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101777719A CN102683093A (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
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| CN102683093A true CN102683093A (en) | 2012-09-19 |
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| CN2012101777719A Pending CN102683093A (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280428A (en) * | 2015-11-05 | 2016-01-27 | 北海银河开关设备有限公司 | Double-break three-station load switch |
| WO2017173819A1 (en) * | 2016-04-08 | 2017-10-12 | 首瑞（天津）电气设备有限公司 | Rotary isolator switch and contact module for rotary isolator switch |
| CN114566409A (en) * | 2022-01-26 | 2022-05-31 | 南京师范大学泰州学院 | Electromagnetic type quick tripping device and circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475068A (en) * | 1980-03-03 | 1984-10-02 | Brailsford Harrison D | Brushless direct current motor with magnetically operated commutating switch means |
| CN200941346Y (en) * | 2006-03-03 | 2007-08-29 | 西安开天铁路牵引电器有限公司 | Electromagnetic arc blower of a.c. electromagnetic contactor |
| CN201576597U (en) * | 2010-01-14 | 2010-09-08 | 西安科灵自动化科技有限公司 | 3300V and below 3300V alternating-current high-voltage isolator |
| CN202633100U (en) * | 2012-06-01 | 2012-12-26 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine |
-
2012
- 2012-06-01 CN CN2012101777719A patent/CN102683093A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475068A (en) * | 1980-03-03 | 1984-10-02 | Brailsford Harrison D | Brushless direct current motor with magnetically operated commutating switch means |
| CN200941346Y (en) * | 2006-03-03 | 2007-08-29 | 西安开天铁路牵引电器有限公司 | Electromagnetic arc blower of a.c. electromagnetic contactor |
| CN201576597U (en) * | 2010-01-14 | 2010-09-08 | 西安科灵自动化科技有限公司 | 3300V and below 3300V alternating-current high-voltage isolator |
| CN202633100U (en) * | 2012-06-01 | 2012-12-26 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280428A (en) * | 2015-11-05 | 2016-01-27 | 北海银河开关设备有限公司 | Double-break three-station load switch |
| WO2017173819A1 (en) * | 2016-04-08 | 2017-10-12 | 首瑞（天津）电气设备有限公司 | Rotary isolator switch and contact module for rotary isolator switch |
| CN114566409A (en) * | 2022-01-26 | 2022-05-31 | 南京师范大学泰州学院 | Electromagnetic type quick tripping device and circuit breaker |
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Application publication date: 20120919 |