CN101145468B - Automatic switching switch adopting permanent-magnet operation device - Google Patents
Automatic switching switch adopting permanent-magnet operation device Download PDFInfo
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- CN101145468B CN101145468B CN2007100702235A CN200710070223A CN101145468B CN 101145468 B CN101145468 B CN 101145468B CN 2007100702235 A CN2007100702235 A CN 2007100702235A CN 200710070223 A CN200710070223 A CN 200710070223A CN 101145468 B CN101145468 B CN 101145468B
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Abstract
The invention discloses an automatic transfer switch using a permanent magnet operational mechanism, which comprises a pair of one-electrode or multi-electrode movable contact systems provided on a substrate, a pair of one-electrode or multi-electrode arc-extinguishing systems, and fixed contacts equipped correspondingly to the movable contact systems. The invention is characterized in that the substrate is further provided thereon with a pair of supporters and two permanent magnet operational mechanisms; the supporter is provided thereon with a pair of rotating shafts linked with the pair of movable contact systems; and the two rotating shafts are respectively provided thereon with a connecting rod linked with the two permanent magnet operational mechanisms. Since the inventive automatic transfer switch employs permanent magnet operational mechanisms, the invention has the advantages that the permanent magnet operational mechanism drives the rotating shaft by the connecting rod to rotate at a certain angle, thereby automatically transferring the switch-on/off of an electric apparatus by connecting or disconnecting a power terminal or another power terminal; the mechanical unlock and lock systems in the prior automatic transfer switch are eliminated; and the automatic transfer switch is kept in open or closed position under the action of permanent magnet.
Description
Technical field
The present invention relates to low-voltage electrical apparatus, relate in particular to automatic transfer switching electric appliance, specifically a kind of automatic transfer switching electric appliance that adopts permanent magnet mechanism.
Background technology
Existing automatic transfer switching electric appliance divides PC level and CB level two big classes, and the operating mechanism of PC level automatic change-over all is to adopt coil moment excitatory, motion in the coil rotating shaft rotation that drives a power supply or another power supply by mechanical chain mechanism unshakable in one's determination, thereby realize the power end or the another one power end closure of automatic change-over, finish the conversion of the power supply from a road to other a tunnel in the circuit.This kind mechanism element is many, complex structure, and the requirement on machining accuracy height, the difficult control of reliability and consistency, the life-span generally has only 3000-8000 time, and needs periodic maintenance.As device for switching indispensable in the distribution system, concerning automatic change-over, will realize high reliability, long-life, non-maintaining requirement now, all also can't meet the demands fully by the automatic change-over of present this structure.And adopted the middle pressure vacuum circuit-breaker of permanent-magnet operating mechanism now widely-used, and realized high reliability, the long-life, non-maintainingly, easy to operate satisfied the market development demand, still, only be used on the less direct-acting vacuum circuit breaker of contact travel.
Summary of the invention
What the present invention will solve is the above-mentioned defective that prior art exists, and aims to provide a kind of PC level automatic transfer switching electric appliance of employing permanent-magnet operating mechanism of novelty, and this structure can be applicable to the PC level automatic transfer switching electric appliance of various performances.
The technical scheme that addresses the above problem employing is: a kind of automatic change-over that adopts permanent-magnet operating mechanism, base plate be provided with the utmost point one to one or multipole moving contact system, one to one the utmost point or multipole arc quenching system with the fixed contact of the relative configuration of described moving contact system, it is characterized in that also being provided with on the described base plate pair of brackets and two permanent-magnet operating mechanisms, described support is provided with the rotating shaft of a pair of and described a pair of moving contact system interlock, is respectively equipped with the connecting rod with described two permanent-magnet operating mechanism interlocks in described two rotating shafts.
The operating mechanism of automatic transfer switching electric appliance of the present invention adopts permanent-magnet operating mechanism, this characteristic feature of an invention is: realize the automatic transfer switching electric appliance of a power end or another one power end closure or disconnection thereby adopt permanent-magnet operating mechanism to turn an angle by connecting rod drive rotating shaft, the machinery of having cancelled traditional automatically moving change over switch is threaded off, fastener system, and the confining force that produces by permanent magnet remains on branch, closing position with automatic change-over.
Can axially stagger as two permanent magnet mechanisms of the present invention is fixed on the base plate, also can be set in parallel on the base plate.
Further improve again as of the present invention, described permanent-magnet operating mechanism comprises fixed core, moving iron core, permanent magnet, switching winding and closing coil, described switching winding and closing coil split up and down, described moving iron core is located in the coil rack of switching winding and closing coil, and described permanent magnet places between switching winding and the closing coil; The described moving upper end unshakable in one's determination connecting rod corresponding with it connects.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the axonometric drawing of automatic change-over of the present invention;
Fig. 2 is the structural representation of automatic change-over of the present invention;
Fig. 3 be Fig. 2 along A-A to cutaway view, wherein two power ends all are in gate-dividing state;
Fig. 4 is that automatic change-over east power end of the present invention closes a floodgate the structure chart during the power end separating brake of left side;
Fig. 5 is an automatic change-over east power end separating brake of the present invention, the structure chart when the left side power end closes a floodgate;
Fig. 6 is the be arranged in parallel axonometric drawings of the execution mode on base plate of two permanent-magnet operating mechanisms of automatic change-over of the present invention.
Fig. 7 is the structural representation of automatic change-over of the present invention at Fig. 6 execution mode, and wherein two of automatic change-over power ends all are in gate-dividing state.
Embodiment
With reference to Fig. 1,2, it is a kind of multipole (can be the two poles of the earth, three utmost points or four utmost points, embodiment be depicted as four utmost points among the figure) automatic change-over that the present invention adopts the automatic transfer switching electric appliance of permanent-magnet operating mechanism.It comprises base plate 1, and support 5, support 7, fixed contact 12 are housed on base plate 1, and permanent-magnet operating mechanism 2, permanent-magnet operating mechanism 8 as figure axially dislocation are arranged in support 5 and the support 7 and are fixed on the base plate 1.Arc quenching system 6 is equipped with in fixed contact 12 tops.A pair of moving contact system 11 is arranged in two power ends of automatic change-over, and an end is fixed on the base plate 1, and rotating shaft 4, rotating shaft 10 penetrate respectively in the square hole of a moving contact system 11 of its correspondence.Connecting rod 3 is fixed in the rotating shaft 4, and is connected with the moving iron core of permanent-magnet operating mechanism 2 by axle 13.Connecting rod 9 is fixed in the rotating shaft 10, and is connected with the moving iron core of permanent-magnet operating mechanism 8 by axle 13.
With reference to Fig. 3, described permanent-magnet operating mechanism 8 comprises fixed core 17, moving iron core 14, permanent magnet 16, switching winding 15 and closing coil 18, described moving unshakable in one's determination 14 are located in the coil rack, described switching winding 15 and closing coil 18 are separately positioned on the two ends in the fixed core 17, described permanent magnet 16 is fixed on the fixed core 17, and places between switching winding 15 and the closing coil 18; Described moving 14 upper ends unshakable in one's determination are connected with described connecting rod 9.
The structure of permanent-magnet operating mechanism 2 is identical with permanent-magnet operating mechanism 8, and its moving 14 upper ends unshakable in one's determination are connected with described connecting rod 3.
State when two power ends of shown in Figure 3 is automatic change-over all are in separating brake.
Permanent-magnet operating mechanism is to adopt electromagnetism actuating, permanent magnetism maintenance, Electronic Control, compare with traditional mechanism and to have lacked that divide-shut brake position machinery is threaded off, fastener system, only the confining force that produces by permanent magnet just can allow circuit breaker remain on branch, close on the position, part has only its 40%, thereby has realized high reliability, long-life, non-maintaining, easy to operate.
As shown in Figure 3, when automatic change-over east power end is in the separating brake position, when there is switching signal the outside, the magnetic potential that closing coil 18 produces left, and it is synthetic with the magnetic field superposition of permanent magnet 16 generations, under the power effect of resultant magnetic field, moving iron core 14 drives in official hour and finishes stroke H, moving simultaneously unshakable in one's determination 14 connecting rods 9 that drive in the rotating shaft 10 10 rotate around the shaft, the angle that rotating shaft 10 is rotated under the drive of connecting rod 9 just in time satisfies automatic change-over close a floodgate required the overcome contact pressure and the required excess of stroke, guarantees the breaking capacity and the temperature rise of automatic change-over.After feed motion finished, each position component as shown in Figure 4.At this moment, the magnetic line of force that permanent magnet 16 produces from fixed core 17 bottoms through fixed core 17 left sides, fixed core 17 middle parts, left side permanent magnet 16, moving unshakable in one's determination 14, right side permanent magnet 16, fixed core 17 right sides get back to fixed core 17 bottoms at last, form a closed magnetic circuit around closing coil 18, near the switching winding the magnetic line of force almost disappears, Distribution of Magnetic Field guarantees that automatic change-over is in reliable closing position near closing coil.Find out that from the above course of work having only moving iron core 14 is moving components, the machinery of having cancelled easy initiating failure from structure takes off, locker, has improved the reliability of system, need not replace and regulate any parts, and the life-span can reach 3-5 ten thousand times.Simultaneously, also need not provide power supply energy, thereby energy consumption is also lower in the on/off switch position.
Fig. 5 be Fig. 2 along B-B to cutaway view, shown in the figure, the left power end of automatic change-over is in the structure chart when gate-dividing state under "on" position, the east power end, and wherein the principle of this left side power end closure is as the principle of the east power end closure shown in Fig. 3,4.
Fig. 6 is be arranged in parallel structure charts on base plate of another kind of two permanent-magnet operating mechanisms of automatic change-over of the present invention.
Fig. 7 is two permanent-magnet operating mechanisms of automatic change-over of the present invention when being arranged in parallel, and during any one power end closed, the operation principle of permanent-magnet operating mechanism is identical with last execution mode in the automatic change-over.Here just repeat no more.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (5)
1. automatic change-over that adopts permanent-magnet operating mechanism, base plate (1) is provided with the utmost point or multipole moving contact system (11) one to one, one to one the utmost point or multipole arc quenching system (6) with the fixed contact (12) of the relative configuration of described moving contact system (11), it is characterized in that (1) also is provided with pair of brackets (7 on the described base plate, 5) and two permanent-magnet operating mechanisms (8,2), described support (7,5) be provided with the rotating shaft (4 of a pair of and described a pair of moving contact system (11) interlock, 10), two described rotating shafts (4,10) be respectively equipped with on and described two permanent-magnet operating mechanisms (2,8) connecting rod (3 of interlock, 9).
2. automatic change-over as claimed in claim 1 is characterized in that described two permanent-magnet operating mechanisms (8,2) axially stagger to be arranged on the described base plate (1).
3. automatic change-over as claimed in claim 1 is characterized in that described two permanent-magnet operating mechanisms (8,2) are set in parallel on the described base plate (1).
4. as any one described automatic change-over of claim 1-3, it is characterized in that described each permanent-magnet operating mechanism (8,2) comprises fixed core (17), moving (14), permanent magnet (16) unshakable in one's determination, switching winding (15) and closing coil (18), described switching winding (15) and closing coil (18) split up and down, described moving iron core (14) is located in the coil rack of switching winding (15) and closing coil (18), and described permanent magnet (16) places between switching winding (15) and the closing coil (18); Described moving iron core (14) upper end is connected on the described connecting rod (3,9) of its correspondence.
5. automatic change-over as claimed in claim 4 is characterized in that two described rotating shafts (4,10) penetrate respectively in the square hole of a moving contact system (11) of its correspondence to locate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100702235A CN101145468B (en) | 2007-07-27 | 2007-07-27 | Automatic switching switch adopting permanent-magnet operation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100702235A CN101145468B (en) | 2007-07-27 | 2007-07-27 | Automatic switching switch adopting permanent-magnet operation device |
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| CN101145468A CN101145468A (en) | 2008-03-19 |
| CN101145468B true CN101145468B (en) | 2010-11-10 |
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| CN2007100702235A Active CN101145468B (en) | 2007-07-27 | 2007-07-27 | Automatic switching switch adopting permanent-magnet operation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014131163A1 (en) * | 2013-02-27 | 2014-09-04 | General Electric Company | Electrical transfer switch system |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231915B (en) * | 2008-01-29 | 2010-06-09 | 黄勤飞 | Double power change-over switch without intermittence |
| CN102034619B (en) * | 2010-11-29 | 2013-08-28 | 西安交通大学 | Permanent magnet mechanism automatic changeover switch |
| CN102064600B (en) * | 2010-12-01 | 2013-01-09 | 沈阳工业大学 | Tristable differential permanent magnetic operating mechanism |
| US9748052B2 (en) | 2014-01-30 | 2017-08-29 | Cummins Power Generation Ip, Inc. | Automatic transfer switch and method thereof |
| CN106663562B (en) * | 2014-06-10 | 2019-01-22 | 康明斯发电Ip公司 | Automatic change-over |
| WO2016206068A1 (en) * | 2015-06-26 | 2016-12-29 | 康明斯发电Ip公司 | Automatic transfer switch and drive subsystem |
| CN109243878B (en) * | 2018-09-14 | 2023-10-20 | 浙江现代电气有限公司 | Three-position opening and closing operating mechanism of change-over switch |
| CN110164724B (en) * | 2019-05-27 | 2024-02-23 | 浙江正泰电器股份有限公司 | Automatic change-over switch electric appliance |
| CN110473723B (en) * | 2019-08-20 | 2024-04-19 | 陕西铭拓机电技术有限公司 | Dual power supply switching mechanism and switch equipment with same |
| CN110517913A (en) * | 2019-09-27 | 2019-11-29 | 兴宇科技沧州有限公司 | A kind of dual power supply arc-control device |
| CN113782353B (en) * | 2021-09-15 | 2022-07-12 | 福州大学 | Novel CPS rotary electromagnetic operating mechanism and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014131163A1 (en) * | 2013-02-27 | 2014-09-04 | General Electric Company | Electrical transfer switch system |
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| CN101145468A (en) | 2008-03-19 |
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Application publication date: 20080319 Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of invention: An automatic transfer switch with permanent magnet operating mechanism Granted publication date: 20101110 License type: Common License Record date: 20201021 |