CN201663094U - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN201663094U CN201663094U CN201020111807XU CN201020111807U CN201663094U CN 201663094 U CN201663094 U CN 201663094U CN 201020111807X U CN201020111807X U CN 201020111807XU CN 201020111807 U CN201020111807 U CN 201020111807U CN 201663094 U CN201663094 U CN 201663094U
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- breaker
- trip
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Abstract
The utility model discloses a vacuum circuit breaker, which comprises a measurement and control circuit module and an electrical anti-tripping module. The measurement and control circuit module is connected with a measurement and control device. The electrical anti-tripping module comprises an anti-tripping control branch circuit formed by a first interlock travel switch, a first auxiliary normally-closed switch, a first circuit breaker auxiliary normally-open switch, a first energy storage travel switch and a closing coil. The anti-tripping control branch circuit is connected with a first switch and a power supply in series to form a power supply circuit. The two ends of the anti-tripping branch circuit are connected in parallel with a self-holding branch circuit formed by a second interlock travel switch, a second auxiliary normally-closed switch and an anti-tripping relay. The utility model has the advantages that the design is reasonable, the service life is long, and the technical problems that the printed circuit board is frequently burnt out by adopting the vacuum circuit breaker in the prior art and the design of the electrical anti-tripping circuit is unreasonable are overcome.
Description
Technical field
The utility model relates to vacuum circuit-breaker, specifically is applicable to the vacuum circuit-breaker of the mid-cabinet of withdraw-type, console.
Background technology
The VK-10 vacuum circuit-breaker is since the early 1990s in last century is introduced China, and through long-term operation test, operating mechanism exposes many problems.Especially in the 10KV of frequent operation capacitor box, motor gear often damages, and causes that printed circuit board (PCB) burns, and with the microcomputer control device interface time, circuit breaker can not normal running sometimes.
Specifically there is following problem in the electric trip-preventing loop of existing VK-10 vacuum circuit-breaker: the anti-jump design principle of VK-10 vacuum circuit-breaker mechanism is with the auxiliary normally closed node of circuit breaker, the anti-trip relay normally closed contact is attempted by the anti-trip relay two ends after the heavy motor type relay normally closed contact series connection of energy storage.When the instantaneous disconnection of arbitrary normally closed contact, anti-trip relay is self-sustaining.Can not match with microcomputer control device sometimes in above-mentioned loop; after switch closes a floodgate; tripping position relay in the measure and control device; green indicating lamp is connected charged with anti-trip relay; the long-term action of anti-trip relay can not be closed a floodgate circuit breaker once more, and necessary for this reason short-time switching-off operating power is behind the releasing anti-trip relay self-keeping circuit; switch could close a floodgate once more, and this makes troubles to the operator on duty.In concrete engineering test, find that also the vibrations of mechanism can cause the anti-trip relay misoperation during owing to breaker open operation.In closing circuit, the heavy motor type relay normally closed contact of a secondary energy storage of connecting obviously is irrational, when accumulation power supply disappears or the energy storage fuse failure, contact is connected all the time, not having to work as switch connection under the situation of energy storage, make closing coil charged, not only circuit breaker can not close a floodgate, but also can burn combined floodgate latching relay and closing coil in the microcomputer control device.
In addition, loops such as the spring energy-storage of former VK-10 vacuum circuit-breaker, combined floodgate, separating brake, mechanism are anti-jump connect by printed circuit board (PCB), and the overload capacity of printed circuit board (PCB) is poor, especially damage when the energy storage travelling gear, when the energy storage electric current feeds for a long time, can cause printed circuit board (PCB) to burn.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, and a kind of novel vacuum circuit-breaker is provided, and vacuum circuit-breaker often burns out printed circuit board (PCB) in the prior art to overcome, and irrational technical problem is designed in the electric trip-preventing loop.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: vacuum circuit-breaker, comprise telemetry circuit module and electric trip-preventing module, described telemetry circuit module connects measure and control device, described electric trip-preventing module comprises by the first chain travel switch, the first auxiliary normally closed switch, first circuit breaker is assisted normal open switch, the anti-jump control branch road that the first energy storage travel switch and closing coil are formed, this anti-jump control branch road is connected with first switch and power supply and is constituted electric power loop, in the parallel connection of the two ends of anti-jump control branch road by the second chain travel switch, the self-sustaining branch road that the second auxiliary normally closed switch and anti-trip relay are formed.
For optimizing technique scheme, the measure of taking also comprises:
The branch road that the two ends parallel connection of above-mentioned anti-jump control branch road is made up of second switch, the auxiliary normal open switch of the 4th circuit breaker and switching winding, the two ends of second switch and the signal output part of measure and control device are in parallel.
Above-mentioned electric trip-preventing module comprises control relay and the energy storage motor that is in parallel, and the two ends of the parallel branch of forming at control relay and energy storage motor are in series with the second energy storage travel switch.
Above-mentioned telemetry circuit module comprises tripping position relay, and tripping position relay is connected anti-trip relay by the auxiliary normal open switch of second circuit breaker, the 3rd auxiliary normally closed switch and the auxiliary normal open switch of the 3rd circuit breaker.
Two ends at above-mentioned tripping position relay are parallel with indicator light.
Above-mentioned anti-trip relay and control relay are arranged on the mounting panel, connect corresponding terminal by lead.
Above-mentioned anti-trip relay and control relay are plugged on the mounting panel, and fix with metal clamps.
Compared with prior art, the utlity model has following advantage:
1, cancelled PCB design of the prior art, anti-trip relay and control relay are put on mounting panel, connect corresponding terminal by lead, cancel elements such as resistance, electric capacity, diode, effectively prolong the useful life of vacuum circuit-breaker.
2, the anti-trip relay that two-way contact is arranged and the control relay of select tape metal clamps are installed firmly to guarantee relay; When single relay verification, strengthen the inspection of docking point mechanical part, when requiring the charged action of relay, normally closed contact disconnects earlier, and normal opened contact is just connected then, and when relay electric-loss returned, normal opened contact is disconnection earlier, and normally closed contact is just connected then; Do not allow in the actuating of relay and return course, normal opened contact and normally closed contact are connected simultaneously.
3, the utility model according to operating principle, is selected associated contacts for use by the strictness of action order when circuit loop designs, and avoids producing parasitic loop, influences the normal running of circuit breaker.
4, well-designed perforate figure, the reasonable Arrangement element, conductor arrangement is at the back side of mounting panel, and during wiring, lead is horizontal vertically flat, and winding displacement does not neatly intersect, and guarantees that mounting panel neatly is convenient to safeguard.
Description of drawings
Fig. 1 is the circuit diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Figure 1 shows that circuit diagram of the present utility model.
Reference numeral wherein is: telemetry circuit module 1, electric trip-preventing module 2, the first chain travel switch L1, the second chain travel switch L2, the first auxiliary normally closed switch y1, the second auxiliary normally closed switch y2, the 3rd auxiliary normally closed switch y3, first circuit breaker is assisted normal open switch b, second circuit breaker is assisted normal open switch b1, the 3rd circuit breaker is assisted normal open switch a, the 4th circuit breaker is assisted normal open switch a1, the first K switch K1, second switch KK2, the first energy storage travel switch LS1, closing coil CC, switching winding TC, control relay x, anti-trip relay y, energy storage motor M, tripping position relay TWJ, indicator light LD.
As shown in Figure 1, vacuum circuit-breaker of the present utility model, comprise telemetry circuit module 1 and electric trip-preventing module 2, described telemetry circuit module 1 connects measure and control device, it is characterized in that: described electric trip-preventing module 2 comprises by the first chain travel switch L1, the first auxiliary normally closed switch y1, first circuit breaker is assisted normal open switch b, the anti-jump control branch road that the first energy storage travel switch LS1 and closing coil CC form, this anti-jump control branch road is connected with the first K switch K1 and power supply and is constituted electric power loop, in the parallel connection of the two ends of anti-jump control branch road by the second chain travel switch L2, the self-sustaining branch road that the second auxiliary normally closed switch y2 and anti-trip relay y form.
At the branch road that the parallel connection of the two ends of anti-jump control branch road is made up of second switch KK2, the auxiliary normal open switch a1 of the 4th circuit breaker and switching winding TC, the two ends of described second switch KK2 and the signal output part of measure and control device are in parallel.
Electric trip-preventing module 2 comprises control relay x and the energy storage motor M that is in parallel, and the two ends of the parallel branch of forming at control relay x and energy storage motor M are in series with the second energy storage travel switch LS2.
Telemetry circuit module 1 comprises tripping position relay TWJ, and tripping position relay TWJ is connected anti-trip relay y by the auxiliary normal open switch b1 of second circuit breaker, the 3rd auxiliary normally closed switch y3 with the auxiliary normal open switch a of the 3rd circuit breaker.At the two ends of tripping position relay TWJ viridescent indicator light LD in parallel.
Electric trip-preventing module 2 in the utility model does not connect each element by printed circuit board (PCB), because the overload capacity of printed circuit board (PCB) is poor in the prior art, especially when the damage of energy storage travelling gear, when the energy storage electric current feeds for a long time, can cause printed circuit board (PCB) to burn.Therefore the utility model adopts a common mounting panel, and anti-trip relay y and control relay x are arranged on the mounting panel, connect corresponding terminal by lead, cancels elements such as resistance, electric capacity, diode, effectively prolongs the useful life of vacuum circuit-breaker.
Anti-trip relay y and control relay x are plugged on the mounting panel, and fix with metal clamps, can be for convenience detach, be convenient to safeguard.
The utility model has also been cancelled fuse in the former tank circuit, the negative supply of tank circuit with closing circuit is separated, and the negative supply of separating brake, closing circuit is connected together.
The motion process of vacuum circuit-breaker of the present utility model is as follows:
1. reset condition: the spring energy storage in vacuum circuit-breaker separating brake, the vacuum circuit-breaker, tripping position relay TWJ action, indicator light LD lights.
2. circuit breaker normally closes a floodgate: the first K switch K1 connects, and closing coil CC adds full voltage, and vacuum circuit-breaker closes a floodgate, anti-trip relay y action and self-sustaining.After closing pulse was removed, anti-trip relay y returned.
3. hand closes in faulty line: the first K switch K1 connects for a long time; behind the breaker closing; the protection action; tripping operation at once, anti-trip relay y action and self-sustaining are though still exist closing pulse; because anti-trip relay y action; cut off closing circuit, vacuum circuit-breaker can not close a floodgate once more, anti-trip relay y dead electricity after closing pulse is removed.Because the second auxiliary normally closed switch y2 is disconnected earlier, connect behind the 3rd auxiliary normally closed switch y3, anti-trip relay y reliably returns, tripping position relay TWJ action, indicator light LD lights.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (7)
1. vacuum circuit-breaker, comprise telemetry circuit module (1) and electric trip-preventing module (2), described telemetry circuit module (1) connects measure and control device, it is characterized in that: described electric trip-preventing module (2) comprises by the first chain travel switch (L1), the first auxiliary normally closed switch (y1), first circuit breaker is assisted normal open switch (b), the anti-jump control branch road that the first energy storage travel switch (LS1) and closing coil (CC) are formed, this anti-jump control branch road is connected with first switch (KK1) and power supply and is constituted electric power loop, in the parallel connection of the two ends of anti-jump control branch road by the second chain travel switch (L2), the self-sustaining branch road that the second auxiliary normally closed switch (y2) and anti-trip relay (y) are formed.
2. vacuum circuit-breaker according to claim 1, it is characterized in that: the branch road that the two ends parallel connection of described anti-jump control branch road is made up of second switch (KK2), the auxiliary normal open switch (a1) of the 4th circuit breaker and switching winding (TC), the two ends of described second switch (KK2) and the signal output part of measure and control device are in parallel.
3. vacuum circuit-breaker according to claim 1, it is characterized in that: described electric trip-preventing module (2) comprises control relay (x) and the energy storage motor (M) that is in parallel, and the two ends of the parallel branch of forming at control relay (x) and energy storage motor (M) are in series with the second energy storage travel switch (LS2).
4. vacuum circuit-breaker according to claim 1, it is characterized in that: described telemetry circuit module (1) comprises tripping position relay (TWJ), and tripping position relay (TWJ) is connected anti-trip relay (y) by the auxiliary normal open switch (b1) of second circuit breaker, the 3rd auxiliary normally closed switch (y3) and the auxiliary normal open switch (a) of the 3rd circuit breaker.
5. vacuum circuit-breaker according to claim 4 is characterized in that: be parallel with indicator light (LD) at the two ends of described tripping position relay (TWJ).
6. vacuum circuit-breaker according to claim 3 is characterized in that: described anti-trip relay (y) and control relay (x) are arranged on the mounting panel, connect corresponding terminal by lead.
7. vacuum circuit-breaker according to claim 3 is characterized in that: described anti-trip relay (y) and control relay (x) are plugged on the mounting panel, and cooperate fixing with metal clamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020111807XU CN201663094U (en) | 2010-02-04 | 2010-02-04 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020111807XU CN201663094U (en) | 2010-02-04 | 2010-02-04 | Vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663094U true CN201663094U (en) | 2010-12-01 |
Family
ID=43233514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020111807XU Expired - Fee Related CN201663094U (en) | 2010-02-04 | 2010-02-04 | Vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663094U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617922A (en) * | 2013-12-10 | 2014-03-05 | 戴顿（重庆）高压开关有限公司 | Universal alternating current and direct current trip detection circuit used for vacuum circuit breaker |
| CN103904610A (en) * | 2014-04-21 | 2014-07-02 | 国家电网公司 | Movable line protection device |
| CN105742983A (en) * | 2016-04-20 | 2016-07-06 | 吉林瀚丰电气有限公司 | Intelligent switch cabinet |
| CN107329031A (en) * | 2017-07-14 | 2017-11-07 | 北京送变电公司 | Contact sequencing device |
| CN108320987A (en) * | 2018-01-08 | 2018-07-24 | 国网河南省电力公司灵宝市供电公司 | A kind of novel high-voltage circuit-breaker closing protective circuit |
-
2010
- 2010-02-04 CN CN201020111807XU patent/CN201663094U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617922A (en) * | 2013-12-10 | 2014-03-05 | 戴顿（重庆）高压开关有限公司 | Universal alternating current and direct current trip detection circuit used for vacuum circuit breaker |
| CN103617922B (en) * | 2013-12-10 | 2015-10-28 | 戴顿（重庆）高压开关有限公司 | AC/DC universal for vacuum circuit-breaker jumps position testing circuit |
| CN103904610A (en) * | 2014-04-21 | 2014-07-02 | 国家电网公司 | Movable line protection device |
| CN103904610B (en) * | 2014-04-21 | 2016-08-31 | 国家电网公司 | Portable line protective devices |
| CN105742983A (en) * | 2016-04-20 | 2016-07-06 | 吉林瀚丰电气有限公司 | Intelligent switch cabinet |
| CN107329031A (en) * | 2017-07-14 | 2017-11-07 | 北京送变电公司 | Contact sequencing device |
| CN107329031B (en) * | 2017-07-14 | 2023-08-04 | 北京送变电公司 | Contact sequencing device |
| CN108320987A (en) * | 2018-01-08 | 2018-07-24 | 国网河南省电力公司灵宝市供电公司 | A kind of novel high-voltage circuit-breaker closing protective circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20140204 |