CN103762118A - Vacuum circuit breaker with single-phase magnetic operation mechanism and intelligent vacuum circuit breaker system - Google Patents
Vacuum circuit breaker with single-phase magnetic operation mechanism and intelligent vacuum circuit breaker system Download PDFInfo
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- CN103762118A CN103762118A CN201410040630.1A CN201410040630A CN103762118A CN 103762118 A CN103762118 A CN 103762118A CN 201410040630 A CN201410040630 A CN 201410040630A CN 103762118 A CN103762118 A CN 103762118A
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Abstract
The invention relates to a vacuum circuit breaker with a single-phase magnetic operation mechanism and an intelligent vacuum circuit breaker system comprising the circuit breaker and a driving controller. The magnetic operation mechanism of the circuit breaker comprises a tubular magnetic ring, an upper magnet yoke, a lower magnet yoke, a magnet loop assembly, a movable magnetic core, an exciting coil, a disconnecting spring and a contact pressure spring, wherein the upper magnet yoke and the lower magnet yoke are connected to the upper end and the lower end of the magnetic ring, the exciting coil is arranged in the magnetic ring, at least the upper portion of the magnetic core is located in a columnar space defined by an inner hole of the exciting coil, an output rod is arranged in the movable magnetic core in a vertical-penetrating mode and is coaxially sleeved with the disconnecting spring and the contact pressure spring, the upper end of the output rod is connected with a moving contact, the lower end of the disconnecting spring and the lower end of the contact pressure spring abut against the movable magnetic core, the upper end of the disconnecting spring abuts against the upper magnet yoke, and the upper end of the contact pressure spring and the output rod are relatively fixed. The vacuum circuit breaker is simple in structure, low in material and manufacturing cost, free of connecting bouncing and capable of keeping magnetism for a long time, achieving phase selection operation and on-line self-monitoring and meeting using requirements for intelligent power grids.
Description
Technical field
The present invention relates to a kind of intelligent system that adopts the single-phase vacuum circuit breaker of permanent-magnet operating mechanism and comprise this circuit breaker, belong to high voltage switchgear field, can be used for electric power 3.6KV-40.5KV circuit, be used for closing load current, short-circuit current, also can in standard GB/T 1984 official hours, bear short circuit and peak current simultaneously.
Background technology
Existing circuit breaker has following features: (1) operating mechanism is spring energy-storage operating mechanism or is Nd-Fe-B permanent magnetic operating mechanism.The mechanical part of spring energy-storage operating mechanism is many, and easily there was a mechanical failure, thereby causes a hidden trouble to power system operation, and combined floodgate has spring.And the demagnetization rate that Nd-Fe-B permanent magnetic operating mechanism is in operation is very high, may cause failure mechanisms; Divide-shut brake discharge capacity is very large, up to hundreds of thousands microfarad, therefore higher to the requirement of operating power capacity, and large like this capacitance, can have potential safety hazard; In addition, owing to using rare earth material, cost is higher.(2) operating mechanisms drag 3 phase circuit breakers simultaneously and operate, and operating work is very large, and cannot realize phase selection operation, cannot meet the phase selection operation requirements of intelligent grid.(3) operating mechanism and vacuum arc extinguishing unit are that front and back are arranged, fore-and-aft direction takes up room larger, and the two links by the transmission mechanism being comprised of parts such as connecting lever, connecting rods, and the axiality of operating mechanism and vacuum arc extinguishing unit is had relatively high expectations.(4) running status that can not on-line monitoring self, cannot meet the requirement of intelligent grid.
Summary of the invention
In order to overcome the above-mentioned defect under prior art, the object of the present invention is to provide a kind of single-phase magnetic operating mechanism vacuum circuit-breaker, simple in structure, material and low cost of manufacture, can realize phase selection operation and online self-monitoring, can meet the instructions for use of intelligent grid.
Technical scheme of the present invention is:
A kind of single-phase magnetic operating mechanism vacuum circuit-breaker, comprise vacuum interrupter and magnetic operating mechanism, described magnetic operating mechanism comprises magnetic loop assembly, movable magnetic core, magnetizing coil, tripping spring and contact pressure spring, described magnetic loop assembly is provided with cylindrical magnetic conducting ring and is connected on described magnetic guiding loop, the upper magnet yoke at lower two ends and lower yoke, described magnetizing coil is arranged in described magnetic guiding loop, the at least top of described movable magnetic core is positioned at the cylindrical space that the endoporus of described magnetizing coil limits, and and described magnetizing coil between there is space, in described movable magnetic core, be penetrated with up and down take-off lever, described take-off lever extends upward and passes described upper magnet yoke and be connected with the moving contact of described vacuum interrupter, described tripping spring and contact pressure spring coaxial sleeve are located on described take-off lever, the lower end of the two is all against in described movable magnetic core, the upper end of described tripping spring is against on described upper magnet yoke, the upper end of described contact pressure spring is relative with described take-off lever fixing.
Set-up mode between described movable magnetic core and described magnetic loop assembly can be following any one: (1) described movable magnetic core is positioned at described magnetic loop assembly completely; (2) described lower yoke is provided with center through hole, and described movable magnetic core runs through described center through hole, and the top of described movable magnetic core is positioned at described magnetic loop assembly, and bottom is positioned at outside described magnetic loop assembly.
Between described movable magnetic core and described magnetic loop assembly, adopt in the situation of set-up mode (2), described movable magnetic core can be provided with its radially maximum linear dimension be greater than the flange of described center through hole equivalent diameter, or the middle and lower part in described magnetic loop assembly can be provided with the descending locating part of the magnetic core of avoiding movable magnetic core to deviate from described magnetic loop assembly downwards.
Described single-phase magnetic operating mechanism vacuum circuit-breaker also comprises straight moving operation insulating bar, and described moving contact, straight moving operation insulating bar are preferably from top to bottom coaxially connected successively with take-off lever.
Described movable magnetic core can be integral type structure or split-type structural, and when being split-type structural, described movable magnetic core can comprise magnetic core main body and the magnetic core base being fixedly connected with up and down.
For aforementioned single-phase magnetic operating mechanism vacuum circuit-breaker described in any one, the move upward 20%-40% stroke of total travel most end of the corresponding described movable magnetic core of its excess of stroke.
For aforementioned single-phase magnetic operating mechanism vacuum circuit-breaker described in any one, the FeGa magnetostriction alloy of magnetic hardening that partly or entirely preferably adopts of described magnetic guiding loop, upper magnet yoke, lower yoke and described movable magnetic core is made.
A kind of intelligent vacuum circuit breaker system, comprise aforementioned single-phase magnetic operating mechanism vacuum circuit-breaker described in any one, also be provided with driving governor, described driving governor can comprise CPU, input unit, state detection unit, discharge cell and be the power supply of described CPU power supply, the output of described input unit and state detection unit accesses respectively described CPU, described CPU is exported and is delivered to described discharge cell, the electric discharge output of described discharge cell is electrically connected to the electric loop of the magnetizing coil of described single-phase magnetic operating mechanism vacuum circuit-breaker.
Described driving governor can also comprise the communication unit being connected with described CPU, described communication unit is provided with communication interface, described state detection unit comprises the detection components and parts that detect described magnetizing coil place electric loop voltage, electric current, detect the detection components and parts of described power supply output line road voltage, electric current, and detect the detection components and parts of divide-shut brake position and/or the detection components and parts of detection closing circuit electric current.
Described intelligent vacuum circuit breaker system can comprise three described single-phase magnetic operating mechanism vacuum circuit-breakers, the electric connecting relation of corresponding three described magnetizing coils can for following any one: the electric loop of (1) three described magnetizing coil is in parallel; (2) electric loop of any two described magnetizing coils series connection, and in parallel with the electric loop of magnetizing coil described in another one; (3) electric loop of any two described magnetizing coils is in parallel, and connects with the electric loop of magnetizing coil described in another one.
Beneficial effect of the present invention is:
(1) with the single-phase basis that is operating as, can realize phase selection operation, this is also the developing direction of intelligent grid from now on.User can realize three-phase synchronous operation as required, only needs to use 3 single-phase circuit breakers of this invention, and magnetizing coil is in parallel.
(2) mechanism's divide-shut brake electric current of traditional neodymium iron boron is generally all at tens amperes of amperes even up to a hundred, and the maximum 6A of single phase closing operating current peak value of the present invention, the drive current of separating brake only has 0.3A, and the standby power of driver only has several watts.
(3) for magnetic, drive operating mechanism, its demagnetization rate to only have 1% of traditional neodymium iron boron mechanism demagnetization rate.The magnetic confining force of tradition neodymium iron boron can drop to 70% left and right after 3 to 5 years, therefore needed manually mechanism to be adjusted.The demagnetization rate of Er Ben mechanism only has 5/10000ths, even after 100 years, its magnetic force still can reach 99.5%, so this circuit breaker does not need people for making any adjustments within useful life.And the technology that magnetizes that driving governor is exclusive, can make the magnetic force of whole mechanism forever remain under 100% state.
(4) because this circuit breaker is for arranging up and down, operating mechanism is vertical with arc extinguishing unit coaxial, does not have the impact of axiality when carrying out breaking-closing operating, therefore to cut-offfing, close short circuit current, has good improvement effect.And traditional circuit breaker is all to arrange before and after operating mechanism and arc extinguishing unit, by mechanical parts such as connecting lever, connecting rods, transmit operating work to arc extinguishing unit, such power output mechanism has coaxial requirement, and this factor has certain influence to the auspicious characteristic of cut-offfing of circuit breaker.
(5) this breaker body, because movable parts are considerably less, only has 1, and movable parts even up to a hundred with tens of conventional springs operating mechanism and neodymium iron boron operating mechanisms are compared, and Mechanical Reliability is greatly improved.Simultaneously due to the layout up and down of operating mechanism and arc extinguishing unit, make whole circuit breaker system volume and weight only have traditional 1/3.
(6) driving governor has self-monitoring function, such as: accessory power supply dead electricity, operational order and circuit-breaker status are inconsistent, energizing loop open circuit, short circuit, manual brake separating are reported to the police, this driving governor can be realized, and provides fault-signal interface to backstage.
(7) in whole life cycle, without closing rebound.
(8) can realize closing by hand function, facilitate user's site installation test.By hand generator, to the charging of closing by hand module, then automatically perform closing operation.
(9) circuit breaker has trip-proof lockout function, and unique distinction of the present invention is, this function is not conflicted mutually with the trip-proof lockout of relaying protection, and the trip-proof lockout of conventional circuit breaker and mechanical and electrical protection are when be used in conjunction with, and need to remove a side trip-proof lockout function.
(10), due to simple in structure, control accurately, so the dispersiveness of branch wire time is very little, in ± 0.5 millisecond.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of single-phase magnetic operating mechanism vacuum circuit-breaker of the present invention;
Fig. 2 is the driving governor theory diagram of intelligent vacuum circuit breaker system of the present invention;
Fig. 3 is the driving control block diagram of an embodiment of intelligent vacuum circuit breaker system of the present invention;
Fig. 4 is the structural representation of the three-phase synchronous operation embodiment of intelligent vacuum circuit breaker system of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of single-phase magnetic operating mechanism vacuum circuit-breaker, comprise that the magnetic that high pressure primary conductive part 1, straight moving operation insulating bar 2 and non-rare earth material are made drives operating mechanism (being designated hereinafter simply as magnetic operating mechanism) 3 and insulation crust.Its mesohigh primary conductive partly comprises leading-out terminal 11, vacuum interrupter 12, be flexible coupling 13 and lower terminals 14, described vacuum interrupter, straight moving operation insulating bar and magnetic operating mechanism from top to bottom arrange successively, and the moving contact of described vacuum interrupter, straight moving operation insulating bar are from top to bottom coaxially connected successively with take-off lever.Magnetic operating mechanism 3 comprises magnetic loop assembly, movable magnetic core, magnetizing coil 5, tripping spring 9 and contact pressure spring 10, described magnetic loop assembly is provided with cylindrical magnetic conducting ring 6 and is connected on described magnetic guiding loop, the upper magnet yoke 4 at lower two ends and lower yoke 7, described magnetizing coil is circular layout in described magnetic loop assembly, for example can be positioned at described magnetic guiding loop near the inwall place of upper end, the at least top of described movable magnetic core is positioned at the cylindrical space that the endoporus of described magnetizing coil limits, and and described magnetizing coil between there is space, not hinder pumping of described movable magnetic core, in described movable magnetic core, be penetrated with up and down take-off lever, and described take-off lever can relatively described movable magnetic core move up and down.The upper end of described take-off lever passes described upper magnet yoke, and be fixedly connected with described straight moving operation insulating bar, the described straight moving operation upper end of insulating bar and the moving contact of described vacuum interrupter are connected, described take-off lever moves up and down and can drive described straight moving operation insulating bar to move up and down, thereby drive the contact closure of described vacuum interrupter or open, realizing cut-offfing or closing function the fault current of power circuit, load current.Certainly, described take-off lever and described straight moving operation insulating bar can be also the same parts that is one.
Described tripping spring and contact pressure spring coaxial sleeve are located on described take-off lever, and the upper end of described tripping spring is against the lower surface of described upper magnet yoke, and lower end is against in described movable magnetic core.The upper end of described contact pressure spring is relative with described take-off lever fixing, and lower end is against in described movable magnetic core.Further, the lower surface of described upper magnet yoke can be provided with shallow slot, and the upper end of described tripping spring can be against on the bottom surface of described shallow slot.
The course of work of described single-phase magnetic operating mechanism vacuum circuit-breaker is: circuit breaker waits in open position the order of closing a floodgate, receive and close a floodgate after order, to magnetizing coil, apply the exciting curent of positive direction, the magnetic field that produces drive movable magnetic core to move upward, described tripping spring and contact pressure spring are further compressed energy storage simultaneously, wherein the elastic force of contact pressure spring release promotion take-off lever moves up, after the up most of stroke of movable magnetic core, moving contact moves to firm co-bit and puts, because exciting curent still exists, movable magnetic core is moved on continuing, when movable magnetic core is upwards covered remainder stroke, movable magnetic core contacts with upper magnet yoke completely, on moving contact, reach with fixed contact and reliably contact simultaneously, tight laminating, complete whole making process.Stop applying exciting curent, circuit breaker relies on permanent magnetic to remain on closing position.When magnetizing coil is injected into very little reverse demagnetization current, the magnetic balance of magnetic operating mechanism is broken, tripping spring discharges, the counter-force of tripping spring drives movable magnetic core to drive moving contact to move downward, and realizes breaker open operation, in this process, moving contact first reaches just minute position, follow afterwards its continuation descending, moving contact starts arc extinguishing, after stroke finishes, remains on open position.In making process, there is pressure all the time to moving contact in contact pressure spring, not only plays and promote the effect that moving contact moves, and also plays the effect that slows down or eliminate contact closing rebound.
The physical dimension of the stroke of movable magnetic core, contact pressure spring and coefficient of elasticity be isoparametric to be chosen and preferably meets following requirement: the elastic force that described in when described movable magnetic core moves upward the 60%-80% of total travel, contact pressure spring is put aside can promote moving contact and move to firm co-bit and put, and with the 20%-40% stroke of the up end of movable magnetic core, meets the excess of stroke needs of circuit breaker.
Fix relative with described take-off lever of the upper end of described contact pressure spring can adopt following several mode: (1) adopts the take-off lever that is provided with one section of flange on it, and the upper end of contact pressure spring is against on the lower surface of this flange; (2) on take-off lever, somewhere processes a up big and down small shoulder, or take-off lever is processed into up big and down small multidiameter structure, and ladder place forms shoulder, the upper end of contact pressure spring is against on the planar annular of shoulder; (3) on take-off lever, somewhere processes an annular groove, and annular catch is installed in annular groove, and the upper end of described contact pressure spring is against on the lower anchor ring of described catch.
In the present embodiment, described lower yoke is provided with center through hole, and described movable magnetic core runs through described center through hole, and the top of described movable magnetic core is positioned at described magnetic loop assembly, and bottom is positioned at outside described magnetic loop assembly.Certainly, also can make described movable magnetic core and be positioned at its underpart to be positioned at described magnetic loop assembly completely with whole parts of its action, compare the previous case, shortcoming is that described magnetic loop assembly need to be done highlyer, takes up room larger.
For fear of movable magnetic core from below, deviate from described magnetic loop assembly, can in movable magnetic core, arrange its radially maximum linear dimension be greater than the flange of described center through hole equivalent diameter, with this flange as position limiting structure; Also can in described magnetic loop assembly, (as middle and lower part) the descending locating part of magnetic core be set, for example, with annular round platform or the frustum of central through hole, utilizing described round platform or frustum and contacting of described flange to limit described movable magnetic core continues descending, the upper surface of the descending locating part of described magnetic core and the distance between the lower surface of described upper magnet yoke have determined the stroke of movable magnetic core, now, only require the radially maximum linear dimension of described flange to be greater than the equivalent diameter of described central through hole.Certainly, the descending locating part of described magnetic core can be also non-rotation body structure, and the descending locating part of described magnetic core can be both an independent part, can be also the Same Part with lower yoke one.
Described movable magnetic core can be integral type structure, can be also split-type structural.The split-type structural that the present embodiment adopts, described movable magnetic core comprises magnetic core main body 8 and the magnetic core base being fixedly connected with up and down, the lower end of described take-off lever is through described magnetic core base.Under this structure, the lower end of described tripping spring and contact pressure spring is against on described magnetic core base.
In the present invention, the FeGa magnetostriction alloy of the part or all of employing magnetic hardening of described movable magnetic core is made, and for the movable magnetic core of aforementioned Split type structure, is preferably magnetic core main body and adopts the FeGa magnetostriction alloy of magnetic hardening to make.
The magnetic operating mechanism that the present invention adopts uses non-rare metal, has broken away from the limitation of the use rare earth material of traditional permanent magnet mechanism, and manufacturing cost is reduced significantly; Demagnetization rate only has 1% of traditional neodymium iron boron operating mechanism, has improved greatly the reliability of electric power system; In addition, can, by automatically controlling to magnetic operating mechanism automatic magnetism-charging, avoid because the long-term charged inoperation of circuit breaker is demagnetized.
The preparation method of the FeGa magnetostriction alloy of described magnetic hardening is preferably employing following steps:
(1) smelt and cast: first will after the raw material weighing such as Ga, C, Mn and Fe, put into the water jacketed copper crucible of vaccum sensitive stove, regulating the vacuum degree of vacuum chamber is 2 * 10
-3pa～4 * 10
-3pa; pass into inert gas and make protective gas; regulate heating power, raw material is melted completely, then be frozen into rapidly alloy pig in water jacketed copper crucible; upset alloy pig carries out melting again; after melting completely, raw material by cooling rapidly, make it be frozen into alloy pig again, then the alloy pig that overturns, melting; so repeatedly make for 2～4 times the composition in alloy even, then directional casting becomes FeGa alloy blank.
(2) homogenizing annealing: FeGa alloy blank is put into vacuum heat treatment furnace, and regulating the vacuum degree of vacuum chamber is 2 * 10
-3pa～4 * 10
-3pa, passes into inert gas and makes protective gas, with the speed of 80～90 ℃/h, is warming up to 1050～1100 ℃ of insulations 8～10 hours, cools to 300 ℃ with the furnace and comes out of the stove.
(3) superconduction is magnetized: the described FeGa alloy blank after annealing is repeatedly magnetized 3-5 time in superconductive permanent magnet, and the magnetic field intensity of superconductive permanent magnet is 4-8T.Be preferably and magnetize 4 times, the magnetic field intensity 6T of superconductive permanent magnet.
Wherein, the mass percent of Ga, C, Mn and Fe raw material can be: Ga:0.1～22.65wt%, C:0.40～0.50wt%, Mn:0.50～1.0wt%, Fe: surplus.
Adopt the coercivity H of the FeGa magnetostriction alloy of the described magnetic hardening that above-mentioned preparation technology makes can reach 5～30kA/m, square than Br/Bs between 0.7～0.9, room temperature magnetostriction coefficient is 20～300 * 10
-6in scope, started a kind of brand-new approach of FeGa magnetostriction alloy magnetic hardening.
As Fig. 2, shown in 3, the present invention also provides a kind of intelligent vacuum circuit breaker system, comprise aforesaid single-phase magnetic operating mechanism vacuum circuit-breaker and driving governor described in any one, described driving governor comprises CPU, input unit, state detection unit, discharge cell and be the power supply of described CPU power supply, the output of described input unit and state detection unit accesses respectively described CPU, described CPU is exported and is delivered to described discharge cell, the electric discharge output of described discharge cell is electrically connected to the electric loop of the magnetizing coil of described single-phase magnetic operating mechanism vacuum circuit-breaker.Described driving governor has been realized control, driving, the self-monitoring function of whole circuit breaker system.Wherein, discharge cell is used for, to described magnetizing coil electric discharge, applying forward exciting curent or reverse demagnetization current.Described power supply can be Switching Power Supply, and its input power can be AC/DC, voltage range be AC:80V to 265V, DC:80V is to 300V.CPU is the brain of whole system, and it can realize monitoring, control, command execution to whole system.
Described driving governor can also comprise the communication unit being connected with described CPU, and described communication unit is provided with communication interface, as serial ports, network interface etc.Described state detection unit comprises the detection components and parts that detect described magnetizing coil place electric loop voltage, electric current, detect the detection components and parts of described power supply output line road voltage, electric current, and the detection components and parts of the detection components and parts of detection divide-shut brake position and/or detection closing circuit electric current, to realize the on-line monitoring of the High Voltage Circuit Breaker Condition, detect magnetizing coil open circuit, short circuit, power supply dead electricity and abnormal mode of operation.According to user's needs, use different feature card plates.Phase-selecting function plug-in unit can be realized the detection to line voltage distribution zero passage, and then realizes phased operation.Communication function plug-in unit can be realized the information of circuit-breaker status and upload, and it supports the communication protocol of main flow.
After executing closing operation, driving governor enters System self-test state, can detect and comprise: the external faults such as accessory power supply power down, operational order and circuit-breaker status are inconsistent, energizing loop open circuit, short circuit, manual brake separating.Simultaneously driving governor can magnetize online to described magnetic operating mechanism after powering on, and guarantees that magnetic force is in 100% state.
Described intelligent vacuum circuit breaker system can comprise three described single-phase magnetic operating mechanism vacuum circuit-breakers, the electric connecting relation of corresponding three described magnetizing coils can for following any one: the electric loop of (1) three described magnetizing coil is in parallel; (2) electric loop of any two described magnetizing coils series connection, and in parallel with magnetizing coil electric loop described in another one; (3) electric loop of any two described magnetizing coils is in parallel, and connects with magnetizing coil electric loop described in another one.Realize thus phase selection operation, AB+C operation or by the same period connecting rod realize three-phase synchronous operation (referring to Fig. 4).With three-phase synchronous, be operating as example, only need magnetizing coil electric loop is in parallel, three single-phase circuit breakers are fixed on a framework, can realize synchronous operation, and meet GB requirement the same period, the spaced apart of each phase can be adjusted flexibly, adds that manual brake separating connecting rod can realize manual brake separating, and realizes chain with isolating switch.
In addition the vacuum arc-extinguishing chamber contact that, circuit breaker of the present invention can adapt to 4-18mm is opened distance; Described driving governor can be provided with trip-proof lockout function.Described circuit breaker also can arrange manually minute, closing device, and closing by hand device comprises special-purpose hand generator and closing by hand electric discharge driver module, when transformer station is during without accessory power supply, can carry out closing by hand with this device.
The present invention can be for conventional circuit breaker scheme, and the phase selection that also can be used on capacitance reactive compensation is crossed the single-pole switch of Z-operation, transformer station's arc suppression coil, the operating passing zero scheme of line transformer etc.The present invention can be used for power network 10-40.5KV system, can be used in SF
6gas-filling cabinet, fixedly cabinet, handcart cabinet, solid insulation cabinet etc.Application, except conventional field, also can be used for naval vessel, Aero-Space etc. and wants the field that cube is little.
Alleged " upper and lower ", " vertical direction " and " fore-and-aft direction " of the present invention is only for explanation forms the relative position relation between each several part of the present invention, do not form the restriction to the absolute orientation of each several part of the present invention.
Claims (10)
1. a single-phase magnetic operating mechanism vacuum circuit-breaker, comprise vacuum interrupter and magnetic operating mechanism, it is characterized in that described magnetic operating mechanism comprises magnetic loop assembly, movable magnetic core, magnetizing coil, tripping spring and contact pressure spring, described magnetic loop assembly is provided with cylindrical magnetic conducting ring and is connected on described magnetic guiding loop, the upper magnet yoke at lower two ends and lower yoke, described magnetizing coil is arranged in described magnetic guiding loop, the at least top of described movable magnetic core is positioned at the cylindrical space that the endoporus of described magnetizing coil limits, and and described magnetizing coil between there is space, in described movable magnetic core, be penetrated with up and down take-off lever, described take-off lever extends upward and passes described upper magnet yoke and be connected with the moving contact of described vacuum interrupter, described tripping spring and contact pressure spring coaxial sleeve are located on described take-off lever, the lower end of the two is all against in described movable magnetic core, the upper end of described tripping spring is against on described upper magnet yoke, the upper end of described contact pressure spring is relative with described take-off lever fixing.
2. single-phase magnetic operating mechanism vacuum circuit-breaker as claimed in claim 1, it is characterized in that set-up mode between described movable magnetic core and described magnetic loop assembly for following any one: (1) described movable magnetic core is positioned at described magnetic loop assembly completely; (2) described lower yoke is provided with center through hole, and described movable magnetic core runs through described center through hole, and the top of described movable magnetic core is positioned at described magnetic loop assembly.
3. single-phase magnetic operating mechanism vacuum circuit-breaker as claimed in claim 2, it is characterized in that adopting in the situation of set-up mode (2) between described movable magnetic core and described magnetic loop assembly, described movable magnetic core be provided with its radially maximum linear dimension be greater than the flange of described center through hole equivalent diameter, or, in described magnetic loop assembly, be provided with the descending locating part of the magnetic core of avoiding movable magnetic core to deviate from described magnetic loop assembly downwards.
4. single-phase magnetic operating mechanism vacuum circuit-breaker as claimed in claim 1, characterized by further comprising straight moving operation insulating bar, and described moving contact, straight moving operation insulating bar are from top to bottom coaxially connected successively with take-off lever.
5. single-phase magnetic operating mechanism vacuum circuit-breaker as claimed in claim 4, it is characterized in that described movable magnetic core is integral type structure or split-type structural, when being split-type structural, described movable magnetic core comprises magnetic core main body and the magnetic core base being fixedly connected with up and down.
6. the single-phase magnetic operating mechanism vacuum circuit-breaker as described in claim 1,2,3,4 or 5, is characterized in that the 20%-40% stroke of the most end that the corresponding described movable magnetic core of its excess of stroke moves upward.
7. the single-phase magnetic operating mechanism vacuum circuit-breaker as described in claim 1,2,3,4,5 or 6, is characterized in that the FeGa magnetostriction alloy of the part or all of employing magnetic hardening of described magnetic guiding loop, upper magnet yoke, lower yoke and described movable magnetic core is made.
8. an intelligent vacuum circuit breaker system, comprise the single-phase magnetic operating mechanism vacuum circuit-breaker described in arbitrary claim in claim 1-7, also be provided with driving governor, described driving governor comprises CPU, input unit, state detection unit, discharge cell and be the power supply of described CPU power supply, the output of described input unit and state detection unit accesses respectively described CPU, described CPU is exported and is delivered to described discharge cell, the electric discharge output of described discharge cell is electrically connected to the electric loop of the magnetizing coil of described single-phase magnetic operating mechanism vacuum circuit-breaker.
9. intelligent vacuum circuit breaker system as claimed in claim 8, it is characterized in that described driving governor also comprises the communication unit being connected with described CPU, described communication unit is provided with communication interface, described state detection unit comprises the detection components and parts that detect described magnetizing coil place electric loop voltage, electric current, detect the detection components and parts of described power supply output line road voltage, electric current, and detect the detection components and parts of divide-shut brake position and/or the detection components and parts of detection closing circuit electric current.
10. intelligent vacuum circuit breaker system as claimed in claim 8 or 9, it is characterized in that described single-phase magnetic operating mechanism vacuum circuit-breaker has three, the electric connecting relation of corresponding three described magnetizing coils be following any one: the electric loop of (1) three described magnetizing coil is in parallel; (2) electric loop of any two described magnetizing coils series connection, and in parallel with the electric loop of magnetizing coil described in another one; (3) electric loop of any two described magnetizing coils is in parallel, and connects with the electric loop of magnetizing coil described in another one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104103451A (en) * | 2014-08-04 | 2014-10-15 | 温州侨融电子科技有限公司 | Modular permanent-magnetic circuit breaker |
| CN107918098A (en) * | 2017-11-20 | 2018-04-17 | 天津平高智能电气有限公司 | A kind of arc-chutes experimental provision |
| CN113257644A (en) * | 2021-05-10 | 2021-08-13 | 北京中磁电气有限公司 | Combined circuit breaker operating mechanism for ultra-fast opening |
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| CN104103451B (en) * | 2014-08-04 | 2016-05-25 | 温州侨融电子科技有限公司 | A kind of modular permanent-magnet breaker |
| CN107918098A (en) * | 2017-11-20 | 2018-04-17 | 天津平高智能电气有限公司 | A kind of arc-chutes experimental provision |
| CN113257644A (en) * | 2021-05-10 | 2021-08-13 | 北京中磁电气有限公司 | Combined circuit breaker operating mechanism for ultra-fast opening |
| CN113257644B (en) * | 2021-05-10 | 2023-03-10 | 北京中磁新材科技有限公司 | Combined circuit breaker operating mechanism for ultra-fast opening |
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