CN202633100U - Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine - Google Patents
Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine Download PDFInfo
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- CN202633100U CN202633100U CN 201220255485 CN201220255485U CN202633100U CN 202633100 U CN202633100 U CN 202633100U CN 201220255485 CN201220255485 CN 201220255485 CN 201220255485 U CN201220255485 U CN 201220255485U CN 202633100 U CN202633100 U CN 202633100U
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Abstract
The utility model discloses a kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine and relates to an electrical element. By adoption of a double-pole dual-breaker moving contact and a magnetic blow-out grid piece arc extinction device, the operating current on-off capacity is over 630A. Housings of the arc extinction device are respectively arranged at the upper and lower ends of an insulating seat; the housings have the functions of opening and closing the upper and lower covers of the shell; the housings and the insulating seat form a closed space; and the magnetic blow-out grid piece arc extinction device is positioned in the closed space. The magnetic blow-out grid piece arc extinction device comprises the housings, arc extinction grid pieces, arc striking plates, magnetic blow-out coils, magnetic iron cores and magnetic plates. When a switching-off arc is under the action of an electric field, the arc root is shifted to arc striking plates equipotential to the arc, the magnetic blow-out coils connected with the arc striking plates generate excitation through the arc current, and the excitation generates an arc blowing magnetic field between two magnetic plates through the magnetic iron cores; and the switching-off arc is led into an arc extinction area of the magnetic blow-out grid piece and is extinct under the action of the arc blowing magnetic field.
Description
Technical field
The utility model 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 utility model 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 utility model is realized 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.
The good effect of the utility model 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 utility model is done further explain.
Fig. 1 the utility model electrical schematic diagram.
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, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255485 CN202633100U (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255485 CN202633100U (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine |
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| Publication Number | Publication Date |
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| CN202633100U true CN202633100U (en) | 2012-12-26 |
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|---|---|---|---|
| CN 201220255485 Expired - Fee Related CN202633100U (en) | 2012-06-01 | 2012-06-01 | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683093A (en) * | 2012-06-01 | 2012-09-19 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
| CN106098457A (en) * | 2016-08-16 | 2016-11-09 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| CN106128843A (en) * | 2016-08-16 | 2016-11-16 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| CN106298349A (en) * | 2016-08-16 | 2017-01-04 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| WO2020248556A1 (en) * | 2019-06-11 | 2020-12-17 | 江苏亚开电气有限公司 | Novel double-contact point plastic case circuit breaker |
-
2012
- 2012-06-01 CN CN 201220255485 patent/CN202633100U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683093A (en) * | 2012-06-01 | 2012-09-19 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
| CN106098457A (en) * | 2016-08-16 | 2016-11-09 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| CN106128843A (en) * | 2016-08-16 | 2016-11-16 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| CN106298349A (en) * | 2016-08-16 | 2017-01-04 | 朱伯秦 | A kind of dual gate knife high voltage isolator |
| WO2020248556A1 (en) * | 2019-06-11 | 2020-12-17 | 江苏亚开电气有限公司 | Novel double-contact point plastic case circuit breaker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20210601 |