CN204303660U - A kind of single arc-chutes double-fracture breaker - Google Patents
A kind of single arc-chutes double-fracture breaker Download PDFInfo
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- CN204303660U CN204303660U CN201420818789.7U CN201420818789U CN204303660U CN 204303660 U CN204303660 U CN 204303660U CN 201420818789 U CN201420818789 U CN 201420818789U CN 204303660 U CN204303660 U CN 204303660U
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- chutes
- breaker
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- arc
- static contact
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Abstract
The utility model discloses a kind of single arc-chutes double-fracture breaker, comprise: arc-chutes, its upper end is built-in with inlet side static contact and goes out to hold static contact, immediately below it, correspondence is arranged at intervals with inlet side moving contact and goes out to hold moving contact respectively, described inlet side moving contact and the conducting rod that goes out to hold to be horizontally arranged at interval immediately below moving contact, be extended with moving conductive rod downwards in the middle of described conducting rod, described moving conductive rod is drawn from described arc-chutes lower end, and is connected with insulated tension pole; Driving mechanism, it is connected with the lower end of described insulated tension pole, and described driving mechanism drives described insulated tension pole to move up, and described two moving contacts synchronously contact corresponding static contact, described insulated tension pole moves down, and described two moving contacts are synchronously away from corresponding static contact.The utility model improves the drop-out voltage of single arc-chutes breaker, and effectively prevent and cause breaker failure of interruption because contact burns.
Description
Technical field
The utility model relates to high-pressure vacuum breaker, particularly a kind of single arc-chutes double-fracture breaker.
Background technology
Along with the sustained and rapid development of China's economy, entire society is also increasing to the demand of electric power, and the capacity of electrical network constantly expands, and forces electric pressure to improve constantly, current most domestic high-pressure delivery line directly adopts 126kV electric pressure, and primary cut-out is used in a large number.Due to excellent arc extinction performance, SF
6breaker is firmly in occupation of the application market of this electric pressure, but SF
6for typical greenhouse gases, will inevitably be forbidden in the near future comprehensively, be therefore badly in need of finding a kind of effective replacer, and substitute SF with vacuum circuit breaker
6breaker becomes a kind of new developing direction.And vacuum circuit breaker can only be applied in the power system of 72kV and following electric pressure at present reliablely, owing to there is saturation effect between the breakdown voltage between fracture contact and gap length, only by increase between fracture to open apart from improving voltage withstand class be conditional, therefore vacuum circuit breaker must have higher breakdown voltage grade could be used widely in high-voltage electric power system with the problem solving difficult arc extinguishing and repeated breakdown.Vacuum circuit breaker with multi breaks is adopted effectively to address this problem, drop-out voltage is significantly increased than single arc-chutes vacuum circuit breaker, but existing double-fracture breaker is adopt double arc extinguishing chambers structures in series composition mostly, complicated and the synchronism of mechanism can not ensure, also have in prior art and double-fracture is set in the same arc-chutes of breaker, but structural design is unreasonable, the Kelvin effect of easy initiation creepage phenomenon and electric current, electric current can not uniform flow two pairs of contacts, between fracture, voltage's distribiuting is uneven, cause contact local temperature too high and burn, breaker to cut-off reliability not high.
Utility model content
For above-mentioned technical problem, a kind of single arc-chutes double-fracture breaker disclosed in the utility model, adopt the two pairs of dynamic/static contact structures being equiped with particular design in single arc-chutes, solve the problem that single arc-chutes breaker drop-out voltage cannot improve further, and effectively prevent and cause the problems such as breaker failure of interruption because contact burns.
Specifically, the technical scheme that the utility model provides is: a kind of single arc-chutes double-fracture breaker, comprising:
Arc-chutes, its upper end is built-in with inlet side static contact and goes out to hold static contact, immediately below it, correspondence is arranged at intervals with inlet side moving contact and goes out to hold moving contact respectively, described inlet side moving contact and the conducting rod that goes out to hold to be horizontally arranged at interval immediately below moving contact, the two ends of described conducting rod upwards extend, and respectively with described inlet side moving contact and go out to hold the lower center portion position of moving contact to be connected, moving conductive rod is extended with downwards in the middle of described conducting rod, described moving conductive rod is drawn from described arc-chutes lower end, and is connected with insulated tension pole; Driving mechanism, it is connected with the lower end of described insulated tension pole, and described driving mechanism drives described insulated tension pole to move up, and described two moving contacts synchronously contact corresponding static contact, described insulated tension pole moves down, and described two moving contacts are synchronously away from corresponding static contact.
Described inlet side static contact and the described two ends going out to hold static contact to be disposed on described arc-chutes, what its lateral separation distance was greater than dynamic and static contact effectively cut-offs distance.
Static contact upper end, described inlet side is connected with the input terminal of breaker, describedly go out to hold static contact upper end to be connected with the outlet terminal of breaker, described input terminal and described outlet terminal as the circuit incoming end of breaker, and are provided with porcelain insulator between itself and described arc-chutes surface.
Described single arc-chutes double-fracture breaker also comprises installing plate, and described arc-chutes sealing is in the upper end of Shell of circuit breaker, and described Shell of circuit breaker is arranged on the upper end of described installing plate, and described installing plate is also provided with control device.
Described installing plate is provided with through hole, and described insulated tension pole is passed down through described through hole and is connected with the upper end of described driving mechanism, and the lower end of described driving mechanism is also provided with manual switching-off device.
Described driving mechanism is permanent mechanism driving mechanism, and its dynamic iron core is provided with drive rod, and the upper end of described drive rod is provided with buffer unit, and the lower end of described insulated tension pole is connected with described drive rod by described buffer unit.
The utility model compared to the beneficial effect of prior art is, provide a kind of single arc-chutes double-fracture breaker, adopt the two structure of contact terminals being equiped with particular design in single vacuum interrupter, increase substantially the drop-out voltage of single arc-chutes vacuum circuit breaker, voltage's distribiuting between fracture is even, uniform current flow through two pairs of contacts, the harmful effect that the Kelvin effect avoiding creepage phenomenon between contact and electric current causes, effectively inhibit because contact local temperature is too high and burn, what add breaker cut-offs reliability, operating mechanism is simple, cost is not high, performance is remarkable, make vacuum circuit breaker at high pressure, the application of extra-high voltage technical field is further expanded.
Accompanying drawing explanation
Fig. 1 is the structural representation of breaker of the present utility model when being in open position;
Fig. 2 is the structural representation of breaker of the present utility model when being in closing position.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to description word to make those skilled in the art.
As shown in Figure 1-2, the one list arc-chutes double-fracture breaker that the utility model provides, comprising:
Arc-chutes 2, its upper end is built-in with inlet side static contact 21 and goes out to hold static contact 22, immediately below it, correspondence is arranged at intervals with inlet side moving contact 23 and goes out to hold moving contact 24 respectively, described inlet side moving contact 23 and the conducting rod 25 that goes out to hold to be horizontally arranged at interval immediately below moving contact 24, the two ends of described conducting rod 25 upwards extend, and respectively with described inlet side moving contact 23 with go out to hold the lower center portion position of moving contact 24 to be connected, moving conductive rod 26 is extended with downwards in the middle of described conducting rod 25, described moving conductive rod 26 is drawn from described arc-chutes 2 lower end, and is connected with insulated tension pole 31; Driving mechanism 61, it is connected with the lower end of described insulated tension pole 31, described driving mechanism 61 drives described insulated tension pole 31 to move up, described two moving contacts are driven synchronously to contact corresponding static contact, described insulated tension pole 31 moves down, drive described two moving contacts synchronously away from corresponding static contact, thus realize the synchronous conjunction componental movement between double-fracture, increase substantially the drop-out voltage of single arc-chutes breaker.
Described inlet side static contact 21 and the described two ends going out to hold static contact 22 to be disposed on described arc-chutes 2, its lateral separation distance is greater than the spacing distance of dynamic and static contact when breaker is in open position, puncture to avoid the transverse direction between contact, uniform current flow through two pairs of dynamic/static contacts, the harmful effect that the Kelvin effect avoiding creepage phenomenon between contact and electric current causes, effectively inhibits because contact local temperature is too high and burn.
Static contact 21 upper end, described inlet side is connected with the input terminal 11 of breaker, describedly go out to hold static contact 22 upper end to be connected with the outlet terminal 12 of breaker, described input terminal 11 and described outlet terminal 12 are as the circuit incoming end of breaker, and be provided with porcelain insulator 13 between itself and described arc-chutes 2 surface, to make electrical isolation between line conducting terminal and described arc-chutes 2.
Described single arc-chutes double-fracture breaker also comprises installing plate 5, described arc-chutes 2 sealing is in the upper end of Shell of circuit breaker 4, described Shell of circuit breaker 4 is arranged on the upper end of described installing plate 5, and described installing plate 5 is also provided with control device 62, and it controls the motion process of described driving mechanism.
Described installing plate 5 is provided with through hole, and described insulated tension pole 25 is passed down through described through hole and is connected with the upper end of described driving mechanism 61, and the lower end of described driving mechanism 61 is also provided with manual switching-off device 33, for emergency opening.
Described driving mechanism 61 is permanent mechanism driving mechanism, its dynamic iron core is provided with drive rod, the upper end of described drive rod is provided with buffer unit 32, it effectively absorbs the overtravel of moving contact, relax the collision of dynamic/static contact, the lower end of described insulated tension pole 25 is connected with described drive rod by described buffer unit 32, thus described insulated tension pole 25 is linked with described driving mechanism 61.
Particularly, during breaker closing, control device 62 controls to the closing coil excitation of driving mechanism 61, dynamic iron core moves upward and drives insulated tension pole 25 synchronously to move upward, make to promote with the moving conductive rod 26 that insulated tension pole 25 upper end connects that two moving contact is synchronous moves to close to two static contact direction, until two pairs of contact synchroswitchings, control device 62 cuts off exciting current, and making process terminates; During separating brake, control device 62 controls to the switching winding excitation of driving mechanism 61, dynamic iron core moves downward and drives insulated tension pole 25 synchronously to move downward, moving conductive rod 26 is made to pull two moving contact to move to away from two static contact directions, until two pairs of contacts are synchronized with the movement to cut-off position, electric arc extinguishes completely, and control device 62 cuts off exciting current, and separating brake process terminates.Because the every phase of breaker is all double-fracture structure, drop-out voltage is evenly distributed on two fractures, electric arc between fracture is more easily extinguished, effectively improve the drop-out voltage of breaker, and uniform current flows through the conductive link 25 of two pairs of contacts and lower end, avoid the Kelvin effect of creepage phenomenon between two pairs of contacts existing in prior art and electric current, make break performance more reliable, too increase the service life of contact simultaneously.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (6)
1. a single arc-chutes double-fracture breaker, is characterized in that, comprising:
Arc-chutes (2), its upper end is built-in with inlet side static contact (21) and goes out to hold static contact (22), immediately below it, correspondence is arranged at intervals with inlet side moving contact (23) and goes out to hold moving contact (24) respectively, described inlet side moving contact (23) and the conducting rod (25) that goes out to hold to be horizontally arranged at interval immediately below moving contact (24), the two ends of described conducting rod (25) upwards extend, and respectively with described inlet side moving contact (23) with go out to hold the lower center portion position of moving contact (24) to be connected, moving conductive rod (26) is extended with downwards in the middle of described conducting rod (25), described moving conductive rod (26) is drawn from described arc-chutes (2) lower end, and be connected with insulated tension pole (31),
Driving mechanism (61), it is connected with the lower end of described insulated tension pole (31), described driving mechanism (61) drives described insulated tension pole (31) to move up, described two moving contacts synchronously contact corresponding static contact, described insulated tension pole (31) moves down, and described two moving contacts are synchronously away from corresponding static contact.
2. single arc-chutes double-fracture breaker as claimed in claim 1, it is characterized in that, described inlet side static contact (21) and the described two ends going out to hold static contact (22) to be disposed on described arc-chutes (2), what its lateral separation distance was greater than dynamic and static contact effectively cut-offs distance.
3. single arc-chutes double-fracture breaker as claimed in claim 2, it is characterized in that, static contact (21) upper end, described inlet side is connected with the input terminal (11) of breaker, describedly go out to hold static contact (22) upper end to be connected with the outlet terminal (12) of breaker, described input terminal (11) and described outlet terminal (12) as the circuit incoming end of breaker, and are provided with porcelain insulator (13) between itself and described arc-chutes (2) surface.
4. single arc-chutes double-fracture breaker as claimed in claim 1, it is characterized in that, also comprise installing plate (5), described arc-chutes (2) sealing is in the upper end of Shell of circuit breaker (4), described Shell of circuit breaker (4) is arranged on the upper end of described installing plate (5), described installing plate (5) is also provided with control device (62).
5. single arc-chutes double-fracture breaker as claimed in claim 4, it is characterized in that, (5) are provided with through hole to described installing plate, described insulated tension pole (25) is passed down through described through hole and is connected with the upper end of described driving mechanism (61), and the lower end of described driving mechanism (61) is also provided with manual switching-off device (33).
6. single arc-chutes double-fracture breaker as claimed in claim 5, it is characterized in that, described driving mechanism (61) is permanent mechanism driving mechanism, its dynamic iron core is provided with drive rod, the upper end of described drive rod is provided with buffer unit (32), and the lower end of described insulated tension pole (25) is connected with described drive rod by described buffer unit (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818789.7U CN204303660U (en) | 2014-12-22 | 2014-12-22 | A kind of single arc-chutes double-fracture breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818789.7U CN204303660U (en) | 2014-12-22 | 2014-12-22 | A kind of single arc-chutes double-fracture breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204303660U true CN204303660U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420818789.7U Expired - Fee Related CN204303660U (en) | 2014-12-22 | 2014-12-22 | A kind of single arc-chutes double-fracture breaker |
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| CN (1) | CN204303660U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731616A (en) * | 2017-11-16 | 2018-02-23 | 中国科学院电工研究所 | Parallel series multi-break arc-chutes |
| CN108878211A (en) * | 2018-08-29 | 2018-11-23 | 浙江紫光电器有限公司 | A kind of synchronization mechanism of high pressure double break circuit breaker |
| CN111554543A (en) * | 2020-05-15 | 2020-08-18 | 大航有能电气有限公司 | Quick disconnected circuit breaker mechanism |
| CN112038168A (en) * | 2020-09-17 | 2020-12-04 | 安徽普众机电有限公司 | High-voltage vacuum switch tube with double arc-extinguishing chambers |
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
-
2014
- 2014-12-22 CN CN201420818789.7U patent/CN204303660U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731616A (en) * | 2017-11-16 | 2018-02-23 | 中国科学院电工研究所 | Parallel series multi-break arc-chutes |
| CN108878211A (en) * | 2018-08-29 | 2018-11-23 | 浙江紫光电器有限公司 | A kind of synchronization mechanism of high pressure double break circuit breaker |
| CN111554543A (en) * | 2020-05-15 | 2020-08-18 | 大航有能电气有限公司 | Quick disconnected circuit breaker mechanism |
| CN112038168A (en) * | 2020-09-17 | 2020-12-04 | 安徽普众机电有限公司 | High-voltage vacuum switch tube with double arc-extinguishing chambers |
| CN112038168B (en) * | 2020-09-17 | 2022-11-08 | 安徽普众机电有限公司 | High-voltage vacuum switch tube with double arc-extinguishing chambers |
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
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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: 20150429 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |