CN104021976A - Permanent magnetic vacuum circuit breaker - Google Patents
Permanent magnetic vacuum circuit breaker Download PDFInfo
- Publication number
- CN104021976A CN104021976A CN201410257780.8A CN201410257780A CN104021976A CN 104021976 A CN104021976 A CN 104021976A CN 201410257780 A CN201410257780 A CN 201410257780A CN 104021976 A CN104021976 A CN 104021976A
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- ratchet
- permanent magnetic
- drive rod
- spring
- switching
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Abstract
The invention discloses a permanent magnetic vacuum circuit breaker which comprises a circuit breaker body and a controller. The controller comprises a permanent magnetic mechanism and a manual switch-on mechanism. According to the technical scheme, the circuit breaker is characterized in that a one-way gear and a lever mechanism are combined to form the manual switch-on mechanism, so that the defect that a permanent magnetic vacuum mechanism can not be switched on manually is overcome, switch-off and switch-on speed is high and safety is high. Switch-off and switch-on operations can be carried out on the situation that no power supply exists, so that the problems that manual operation of the circuit breaker is inconvenient to achieve on the situation that no power supply exits, switch-off and switch-on of permanent magnetic vacuum circuit breakers in the prior art on an outdoor branch line are achieved by charging through a power generator, and accordingly power generation equipment is not easy to convey in remote mountain areas, and work difficulty of relative personnel is increased are solved.
Description
Technical field
The present invention relates to a kind of circuit protection device, more particularly, it relates to a kind of circuit breaker.
Background technology
Permanent magnetic vacuum breaker is mainly comprised of vacuum circuit breaker body, controller and external voltage transformer three parts; three is electrically connected by aviation socket and outdoor hermetically-sealed cable; there is fault detection capability; function and communication function are controlled in protection; can reliably judge, sense switch is into and out of milliampere level zero-sequence current and the phase fault electric current of line side, realizes excision single phase ground fault and phase fault automatically.
Permanent magnetic vacuum breaker adopts permanent-magnet manipulating mechanism, on branch line, close out of doors and all will utilize generator charging to operate, and at next manual brake separating or the combined floodgate of cannot carrying out of the situation that there is no power supply, such permanent magnetic vacuum breaker because carrying generating equipment is extremely difficult, has increased operating personnel's work difficulty in some remote mountain areas.Therefore in the recent period occurred that on the market the Chinese patent that some permanent magnetic vacuum breakers with manual divide-shut brake are CN203179784U as notification number discloses a kind of phased vacuum permanent magnet circuit breaker manual synchronization brake separating mechanism, can realize the phased vacuum permanent magnet circuit breaker of armstrong's patent simultaneous break, by rotating AB phase camshaft, by synchronizing bar, drive C phase camshaft synchronously to rotate, when camshaft is during to 45 ° of anticlockwises, the connecting lever of camshaft can order about phase-control permanent magnet circuit breaker three-phase synchronous separating brake, and the asynchronous time is less than 3ms.It is characterized in that: with synchronizing bar, AB phase camshaft and C phase camshaft are coupled together, can accurately realize AB phase and keep equidirectional same angle rotation with C phase camshaft, anglec of rotation error is less than 1 °.The link gear of this utility model can complete the mechanical synchronization separating brake of phased vacuum permanent magnet circuit breaker under power down mode; can avoid phased vacuum permanent magnet circuit breaker three characteristics of the middle term Voltage unbalance when asynchronous separating brake to cause the misoperation of protection, avoid the electric infringement of imbalance of three-phase voltage to power load and electric equipment.
But, although above-mentioned patent has solved the problem of manually controlling in permanent magnetic vacuum breaker with control can not be had both automatically, but manual manipulation mechanism closing speed is wherein slow, and lack self-locking mechanism, in divide-shut brake process, easily because tripping mechanism swings back and forth, occur that a large amount of sparks cause switching-on mechanism to burn out or occur security incident, its security performance need to strengthen.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide the permanent magnetic vacuum breaker that has manual control concurrently and automatically control that a kind of closing speed is fast, security performance is high.
For achieving the above object, the invention provides following technical scheme:
A kind of permanent magnetic vacuum breaker, comprise breaker body and controller, described controller comprises mechanism case, electromagnetism close/open machine, one side of described mechanism case is that combined floodgate side and opposite side are separating brake side, described separating brake side, between combined floodgate side, set up drive rod, on described drive rod, be provided with moving contact, on described breaker body, be provided with the fixed contact with described moving contact clamping, described drive rod and breaker body link together by the clamping of described moving contact and fixed contact, described electromagnetism close/open machine is arranged on separating brake side and comprises moving iron core, static iron core, closing coil, switching winding and the first permanent magnet, wherein:
Between the inwall of described mechanism case and moving iron core, be provided with the tripping spring with the coaxial setting of described drive rod, described tripping spring one end is connected with the inwall of mechanism case and the other end is connected with drive rod, and described tripping spring can stretch vertically or stretch under the pressure-acting of described moving iron core and described mechanism case inwall;
Described controller also comprises manual closing mechanism, and described manual closing mechanism is arranged on described combined floodgate side, and described manual closing mechanism comprises handle, ratchet, cam and switching-in spring,
Described handle comprises fixed lever and dwang, described dwang is connected to the periphery of described fixed lever and drives described fixed lever to rotate by described dwang, it is outside that described fixed lever one end extends in described mechanism case, and the other end is plugged in the gear hole of described ratchet through described mechanism case inwall;
Described cam is arranged in described mechanism case, comprises operating portion and moving runner, and described moving runner can be intermeshing with described ratchet;
Described rotation section is connected on described operating portion by a rotating shaft and described rotation section can be rotated around described rotating shaft, described switching-in spring one end is connected with drive rod, the other end is connected on the operating portion of described cam, and by described switching-in spring drive described operating portion do with respect to described ratchet near or away from motion.
By adopting technique scheme, electromagnetism close/open machine and manually close/open machine are separately positioned on drive rod two ends and are linked and made described permanent magnetic vacuum breaker have manual control concurrently and automatically control two kinds and control function by drive rod, when closing by hand, by handle, rotate described cam, in cam rotation process, elongate described switching-in spring, be stretched to after the limit described switching-in spring is stressed, described spring drives drive rod motion, described drive rod promotes moving contact makes described moving contact and fixed contact fasten combined floodgate, utilized the distortion of spring to guarantee closing speed, adopt ratchet to play auto-lock function, can in rotation process, can only turn round toward single direction by limiting gear, prevent from occurring that gear reverse causes repeatedly closing a floodgate in making process, separating brake causes a large amount of electric arc, spark and occur security incident, described permanent magnetic vacuum breaker both can have in electric situation automatic closing also can adopt manual mode to complete feed motion not having in electric, by adopting lever operated replacement carrying generator, be that electromagnetic operating mechanism charging or use crowbar close a floodgate, simplify permanent magnetic vacuum breaker operating procedure, utilize ratchet locking manual closing mechanism simultaneously, in preventing from closing a floodgate, occur unexpected, performance tightens security.
The present invention is further set to: described switching-in spring closes drive rod and is set to lever connection.
By adopting technique scheme; between described switching-in spring and drive rod, be provided with lever; described switching-in spring is connected on the long arm of force of lever; described drive rod is connected on the short arm of force of lever; utilize lever principle to make described switching-in spring pull the required pulling force of drive rod to be down to minimum; in labour-saving, reduce the length that switching-in spring is stretched simultaneously; play the effect of protection switching-in spring; extend the useful life of switching-in spring described in it, indirectly improved the security performance of described permanent magnetic vacuum breaker.
The present invention is further set to: described switching-in spring side is provided with the second permanent magnet.
By adopting technique scheme, described the second permanent magnet has magnetic attraction to cam, and in separating brake, described the second permanent magnet can provide a part of separating brake power, accelerates separating brake action, reduces the generation of separating brake electric arc.
The present invention is further set to: described ratchet is set to ratchet, is provided with the ratchet with ratchet adaptation on described handle.
By adopting technique scheme, it is fairly simple, effectively a kind of that described ratchet structure belongs in ratchet, by pawl-and-gearing tooth, coordinate, just be enough to reach the effect of the manual close/open machine of unidirectional control, in the process of turning handle, handle can rotate to both direction, but only have a direction can rotate described ratchet, other direction is real is idle running, conveniently in closing by hand process, not only can adjust handle turned position but also limiting gear group can only single direction running in good time.
The present invention is further set to: described separating brake side is provided with emergency opening mechanism, described emergency opening mechanism comprises separating brake handle and kinematic link, described separating brake handle is fixedly connected with kinematic link, and described kinematic link and mechanism case are hinged, and described drive rod is connected with drive rod lever.
By adopting technique scheme, described permanent magnetic vacuum breaker can complete emergency opening by described emergency opening mechanism, when permanent magnet opening and closing failure mechanisms, rotate described separating brake handle, described kinematic link drives moving contact motion to make it deviate from fixed contact and completes separating brake action, guarantee that described permanent magnetic vacuum breaker can cut off separating brake at any time, guarantee that it has emergency cut-off measure.
Accompanying drawing explanation
Fig. 1 is the structural representation of permanent magnetic vacuum breaker embodiment of the present invention;
Fig. 2 is the lateral plan of permanent magnetic vacuum breaker embodiment of the present invention;
Fig. 3 is manual closing mechanism schematic diagram in permanent magnetic vacuum breaker embodiment of the present invention;
Fig. 4 is urgent close/open machine schematic diagram in permanent magnetic vacuum breaker embodiment of the present invention.
Reference numeral: 1. breaker body; 2. controller; 21. electromagnetism close/open machines; 211. moving iron cores; 212. static iron core; 213. switching winding; 214. closing coil; 215. first permanent magnets; 216. drive rod; 22. manual closing mechanisms; 221. handle; 222. ratchet; 223. cam; 224. switching-in spring; 225. tripping spring; 226. ratchet; 227. leverage; 228. emergency opening mechanism; 229; The second permanent magnet; 230; Operating portion; 231. rotation section; 232. separating brake handles; 233. kinematic link; 23. mechanism cases; 24. separating brake sides; 25. combined floodgate sides; 3. moving contact; 4. fixed contact.
Embodiment
Referring to figs. 1 through Fig. 3, permanent magnetic vacuum breaker embodiment of the present invention is described further.
A kind of permanent magnetic vacuum breaker, comprise breaker body 1 and controller 2, described controller 2 comprises control mechanism case 23, electromagnetism close/open machine 21, the structure of breaker body 1 is the vertical three-phase column support type of casing, mainly by conduction arc quenching system, insulation system, current transformer, drive system, five parts such as housing form, one side of described mechanism case 23 be combined floodgate side 25 and with opposite side be separating brake side 24, described separating brake side 24, between combined floodgate side 25, set up drive rod 216, on described drive rod 216, be provided with moving contact 3, on described breaker body 1, be provided with can with the fixed contact 4 of described moving contact 3 clampings, described drive rod 216 links together with the clamping of described breaker body 1 by described moving contact 3 and described fixed contact 4, described electromagnetism close/open machine 21 is arranged on separating brake side 24 and comprises moving iron core 211, static iron core 212, closing coil 214, switching winding 213 and the first permanent magnet 215, wherein:
Between the inwall of described mechanism case 23 and moving iron core 211, be provided with the tripping spring 225 with described drive rod 216 coaxial settings, described tripping spring 225 one end are connected with the inwall of mechanism case 23 and the other end is connected with drive rod 216, and described tripping spring 225 can stretch vertically or stretch under the pressure-acting of described moving iron core 211 and described mechanism case 23 inwalls;
Described controller 2 also comprises manual closing mechanism 22, and described manual closing mechanism 22 is arranged on described combined floodgate side 25, and described manual closing mechanism 22 comprises handle 221, ratchet 222, cam 223 and switching-in spring 224,
Described handle 221 comprises fixed lever and dwang, described dwang is connected to the periphery of described fixed lever and drives described fixed lever to rotate by described dwang, described fixed lever one end extends in described mechanism case 23 outsides, and the other end is plugged in the gear hole of described ratchet 222 through described mechanism case 23 inwalls;
Described cam 223 is arranged in described mechanism case 23, comprises operating portion 230 and moving runner, and described moving runner can be intermeshing with described ratchet 222;
Described rotation section 231 is connected on described operating portion 230 by a rotating shaft and described rotation section 231 can be rotated around described rotating shaft, described switching-in spring 224 one end are connected with drive rod 216, the other end is connected on the operating portion 230 of described cam 223, and by described switching-in spring 224 drive described operating portion 230 do with respect to described ratchet 222 near or away from motion.
Described electromagnetism close/open machine principle: when described permanent magnetic vacuum breaker is during in open position, between described moving iron core 211 and switching winding 213, air gap is little, magnetic resistance is low, large with closing coil 214 air gaps, magnetic resistance is high, therefore the magnetic field Main Function of the first permanent magnet 215 and moving iron core 211 are near one end of switching winding 213, magnetic field force in described mechanism keeps moving iron core 211 to stop at the position near switching winding 213, make described permanent magnetic vacuum breaker in gate-dividing state, when permanent magnetic vacuum breaker need to close a floodgate, can first make closing coil 214 energisings, the magnetic line of force in the magnetic field that it produces mainly concentrates on one end of the close closing coil 214 of moving iron core 211, and offset at the magnetic line of force in the magnetic field near switching winding 213 one end and the first permanent magnet 215 formation, follow the rising of exciting curent, near switching winding 213 end suction, will increase, near closing coil 214 end end suction, will weaken, when being greater than counter-force near closing coil 214 end suction, be that coil current reaches after shake-up value, moving iron core 211 will start towards closing coil 214 end motions, when moving iron core 211 moves to terminal location, moving contact 3 completes combined floodgate with fixed contact 5 clampings, permanent magnet in vacuum permanent magnet circuit breaker selects NdFeB rear-earth material to make at present, neodymium boron permanent magnet is being subject to intense mechanical impact, high temperature and opposing magnetic field are done the used time some or all of demagnetization of equal possibility but can't be affected its utilization in the true circuit breaker of permanent magnetism.
Described manual closing mechanism principle: when closing by hand, described permanent magnetic vacuum breaker is in gate-dividing state, described moving contact 3 is separated with fixed contact 5, rotate described handle 221, described handle 221 drives ratchet 222 runnings, described ratchet 222 and described cam 223 engagements, on described cam 223, connect switching-in spring 224, in described cam 223 rotation processes, elongate described switching-in spring 224, be stretched to after the limit described switching-in spring 224 is stressed, described spring drives drive rod 216 motions, described drive rod 216 promotes moving contact 3 makes described moving contact 3 fasten combined floodgate with fixed contact 5, adopt ratchet 222 in rotation process, can only turn round toward single direction by limiting gear, prevent from occurring that gear reverse causes repeatedly closing a floodgate in making process, separating brake causes a large amount of electric arc, spark and occur security incident, described permanent magnetic vacuum breaker both can have in electric situation automatic closing also can adopt manual mode to complete feed motion not having in electric, by adopting handle 221 operations to replace carrying generator, be that electromagnetic operating mechanism charges or uses crowbar to close a floodgate, simplify permanent magnetic vacuum breaker operating procedure, utilize ratchet 222 locking manual closing mechanisms simultaneously, in preventing from closing a floodgate, occur unexpected, performance tightens security.
Described switching-in spring 224 closes drive rod 216 and is set to lever connection; between described switching-in spring 224 and drive rod 216, be provided with leverage 227; described switching-in spring 224 is connected on the long arm of force of leverage 227; described drive rod 216 is connected on the short arm of force of leverage 227; utilize lever principle to make described switching-in spring 224 pull the required pulling force of drive rod 216 to be down to minimum; in labour-saving, reduce the length that switching-in spring 224 is stretched simultaneously; play the effect of protection switching-in spring 224, extend the useful life of switching-in spring 224 described in it.
Described switching-in spring 224 sides are provided with the second permanent magnet 229,229 pairs of cams 223 of described the second permanent magnet have magnetic attraction, and in separating brake, described the second permanent magnet 229 can provide a part of separating brake power, accelerate separating brake action, reduce the generation of separating brake electric arc.
Described ratchet 222 is set to ratchet 222, ratchet 222 is defined as the wheel with toothed surfaces or friction surface, by ratchet 226, promote to do step motion, similar gear, coordinate with dialer, control the part of dialer conversion, on described handle 221, be provided with the ratchet 226 with ratchet 222 adaptations, described ratchet 226 is crotch shape and arranges, and the angle between described ratchet 226 and handle 221 is less than 90 degree, when handle 221 is made left and right reciprocally swinging, ratchet 222 can only be done unidirectional intermittently-driving, described ratchet 222 structures belong to fairly simple in ratchet 222, effectively a kind of, by ratchet 226 and ratchet 222 teeth, coordinate, in the process of rotation manual, can rotate to both direction, but only have a direction can rotate described ratchet 222, other direction is real is idle running, convenient in closing by hand process, not only handle 221 turned positions can have been adjusted but also limiting gear group can only single direction running in good time.
Described separating brake side 24 is provided with emergency opening mechanism 228, described emergency opening mechanism 228 comprises separating brake handle 232 and kinematic link 233, described separating brake handle 232 is fixedly connected with kinematic link 233, described kinematic link 233 is hinged with mechanism case 23, and described kinematic link 233 is connected with drive rod 216 levers, described permanent magnetic vacuum breaker can complete emergency opening by described emergency opening mechanism 228, when permanent magnet opening and closing mechanism 21 lost efficacy, rotate described separating brake handle 221, described kinematic link drives moving contact 3 motions to make it deviate from fixed contact 5 and completes separating brake action, guarantee that described permanent magnetic vacuum breaker can cut off separating brake at any time, guarantee that it has emergency cut-off measure.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a permanent magnetic vacuum breaker, comprise breaker body and controller, described controller comprises mechanism case, electromagnetism close/open machine, one side of described mechanism case is that combined floodgate side and opposite side are separating brake side, described separating brake side, between combined floodgate side, set up drive rod, on described drive rod, be provided with moving contact, on described breaker body, be provided with the fixed contact with described moving contact clamping, described drive rod and breaker body link together by the clamping of described moving contact and fixed contact, described electromagnetism close/open machine is arranged on separating brake side and comprises moving iron core, static iron core, closing coil, switching winding and the first permanent magnet, it is characterized in that:
Between the inwall of described mechanism case and moving iron core, be provided with the tripping spring with the coaxial setting of described drive rod, described tripping spring one end is connected with the inwall of mechanism case and the other end is connected with drive rod, and described tripping spring can stretch vertically or stretch under the pressure-acting of described moving iron core and described mechanism case inwall;
Described controller also comprises manual closing mechanism, and described manual closing mechanism is arranged on described combined floodgate side, and described manual closing mechanism comprises handle, ratchet, cam and switching-in spring,
Described handle comprises fixed lever and dwang, described dwang is connected to the periphery of described fixed lever and drives described fixed lever to rotate by described dwang, it is outside that described fixed lever one end extends in described mechanism case, and the other end is plugged in the gear hole of described ratchet through described mechanism case inwall;
Described cam is arranged in described mechanism case, comprises operating portion and moving runner, and described moving runner can be intermeshing with described ratchet;
Described rotation section is connected on described operating portion by a rotating shaft and described rotation section can be rotated around described rotating shaft, described switching-in spring one end is connected with drive rod, the other end is connected on the operating portion of described cam, and by described switching-in spring drive described operating portion do with respect to described ratchet near or away from motion.
2. permanent magnetic vacuum breaker according to claim 1, is characterized in that: described switching-in spring is set to lever with drive rod and is connected.
3. permanent magnetic vacuum breaker according to claim 1 and 2, is characterized in that: described switching-in spring side is provided with the second permanent magnet.
4. permanent magnetic vacuum breaker according to claim 3, is characterized in that: described ratchet is set to ratchet, is provided with the ratchet with ratchet adaptation on described handle.
5. permanent magnetic vacuum breaker according to claim 4, it is characterized in that: described separating brake side is provided with emergency opening mechanism, described emergency opening mechanism comprises separating brake handle and kinematic link, described separating brake handle is fixedly connected with kinematic link, described kinematic link and mechanism case are hinged, and described kinematic link is connected with drive rod lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257780.8A CN104021976B (en) | 2014-06-10 | 2014-06-10 | Permanent magnetic vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257780.8A CN104021976B (en) | 2014-06-10 | 2014-06-10 | Permanent magnetic vacuum breaker |
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| Publication Number | Publication Date |
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| CN104021976A true CN104021976A (en) | 2014-09-03 |
| CN104021976B CN104021976B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410257780.8A Active CN104021976B (en) | 2014-06-10 | 2014-06-10 | Permanent magnetic vacuum breaker |
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Cited By (6)
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| CN105070585A (en) * | 2015-08-25 | 2015-11-18 | 李新建 | Manual opening-closing type permanent magnetic mechanism |
| CN109036884A (en) * | 2018-09-19 | 2018-12-18 | 宁夏力成电气集团有限公司 | A kind of Intelligent high-voltage vacuum circuit breaker and its mechanical property parameter determination method |
| CN109727830A (en) * | 2017-10-28 | 2019-05-07 | 王静洋 | A kind of circuit breaker operation mechanism driven using electromagnetic vibrator |
| CN111354594A (en) * | 2020-03-16 | 2020-06-30 | 大航有能电气有限公司 | Complete circuit breaker capable of quickly closing and opening brake |
| CN112017875A (en) * | 2020-08-23 | 2020-12-01 | 国网山东省电力公司莱芜供电公司 | Control device of high-voltage switch |
| CN112885663A (en) * | 2021-01-12 | 2021-06-01 | 浙江越岭电气有限公司 | Simple indoor high-voltage grounding switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105070585A (en) * | 2015-08-25 | 2015-11-18 | 李新建 | Manual opening-closing type permanent magnetic mechanism |
| CN109727830A (en) * | 2017-10-28 | 2019-05-07 | 王静洋 | A kind of circuit breaker operation mechanism driven using electromagnetic vibrator |
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| CN111354594A (en) * | 2020-03-16 | 2020-06-30 | 大航有能电气有限公司 | Complete circuit breaker capable of quickly closing and opening brake |
| CN111354594B (en) * | 2020-03-16 | 2022-03-25 | 大航有能电气有限公司 | Complete circuit breaker capable of quickly closing and opening brake |
| CN112017875A (en) * | 2020-08-23 | 2020-12-01 | 国网山东省电力公司莱芜供电公司 | Control device of high-voltage switch |
| CN112017875B (en) * | 2020-08-23 | 2023-02-24 | 国网山东省电力公司莱芜供电公司 | Control device of high-voltage switch |
| CN112885663A (en) * | 2021-01-12 | 2021-06-01 | 浙江越岭电气有限公司 | Simple indoor high-voltage grounding switch |
| CN112885663B (en) * | 2021-01-12 | 2023-02-28 | 浙江越岭电气有限公司 | Simple indoor high-voltage grounding switch |
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| CN104021976B (en) | 2016-05-25 |
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Denomination of invention: Vacuum permanent magnet circuit breaker Effective date of registration: 20210317 Granted publication date: 20160525 Pledgee: Agricultural Bank of China Limited by Share Ltd. Yueqing branch Pledgor: ZHEJIANG FUERTE ELECTRICAL APPARATUS Co.,Ltd. Registration number: Y2021330000198 |