CN101702381A - Design method of remanent magnetism mechanism of recombiner and remanent magnetism mechanism - Google Patents
Design method of remanent magnetism mechanism of recombiner and remanent magnetism mechanism Download PDFInfo
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- CN101702381A CN101702381A CN200910212660A CN200910212660A CN101702381A CN 101702381 A CN101702381 A CN 101702381A CN 200910212660 A CN200910212660 A CN 200910212660A CN 200910212660 A CN200910212660 A CN 200910212660A CN 101702381 A CN101702381 A CN 101702381A
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Abstract
The invention relates to a design method of a remanent magnetism mechanism of a recombiner and a remanent magnetism mechanism. The design method uses silicon iron as the material of the magnetic conduction loop of the remanent magnetism mechanism of the recombiner, and concretely comprises the following steps: (1) making the silicon iron material into a magnetic yoke; arranging a cavity in the magnetic yoke, and arranging a closing coil in the cavity; arranging a through hole in the middle of the bottom of the cavity; (2) arranging a movable iron core in the middle of the closing coil, and driving a pull rod by using the movable iron core; arranging an elastomer in the middle of the closing coil, wherein the elasticity of the elastomer onto the movable iron core is opposite to the direction of the magnetic force of the electrified closing coil onto the movable iron core, so the elastomer and the closing coil control the movement of the movable iron core in the axial direction of the closing coil together; the pull rod penetrating through the through hole from the bottom of the cavity; and (3) using the external wall of the magnetic yoke as the casing of the remanent magnetism mechanism of the recombiner. Compared with similar mechanisms, the technical scheme of the invention has the advantages of stable performance, low energy consumption and long service life of the electronic control device, and is especially suitable for 24kV recombiners.
Description
Technical field
The present invention relates to a kind of being applicable to and close the operating mechanism close vacuum circuit-breaker, as the automatic circuit of the various protections of frequent operation band, particularly a kind of method for designing and magnetism mechanism of magnetism mechanism of the automatic circuit that is applicable to 24kV.
Background technology
Along with The development in society and economy, the power distribution network of 10kV has been difficult to satisfy power reguirements, and adopting the 20kV power distribution network is the inexorable trend of power system development.China is just throwing huge fund at present the 20kV power distribution network is being built, wherein with some areas, Jiangsu Province as pilot project.The shortage of domestic present 20kV outdoor switch equipment, overseas equipment does not also adapt to the relevant criterion of China fully, and the price comparison costliness, is mostly to replace with voltage levels.So it is very necessary developing reasonable price, the quality 20kV outdoor high-voltage alternating current vacuum circuit-breaker really up to the mark, advanced technology that is fit to China's national situation.
At present, the domestic field of distribution network of China is used permanent-magnet manipulating mechanism more generally, the permanent magnet mechanism development so far, we can say, the permanent magnetic operating technology is comparative maturity, and in recent years, because it is little that permanent magnetic actuator vacuum circuit breaker has a volume, in light weight, divide-shut brake speed is fast, non-maintaining, life-span is long, economize on electricity, the not burning of no oil, the reliability height, can frequent operation etc. numerous advantages, the China and even the main flow in the Medium voltage switch or circuit breaker field of many developed countries have in the world been become, and the continuous maturation that relies on above-mentioned advantage of permanent magnet mechanism and technology, permanent magnet mechanism also towards low pressure and the development of high pressure field, has also been obtained remarkable achievement at home and abroad at present.Along with the range of application of permanent magnet mechanism and field more and more widely, it is difficult point that its instantaneous power reaches mechanical property control greatly, controller is complicated, and its life-span, temperature characterisitic that starts electric capacity and electronic control circuit is permanent-magnet manipulating mechanism overall reliability " bottleneck ".
Chinese patent 200420092305.1 " A angle inner yoke permanent magnet mechanism " comprises the integrated closed magnetic circuit of being made up of power conduction axis, upper magnet yoke cover plate, outer yoke sleeve, the moving iron core of two fitting surface, A angle inner yoke, permanent magnet, tripping spring, solenoid, lower yoke cover plate, supporting plate of permanent magnetism, electromagnetism.Become the A angle between the interior hypotenuse conical surface that encircles into of A angle inner yoke, its hypotenuse and baseplane extended line.
Chinese patent 200520025592.9 " permanent magnet mechanism of the dull and stereotyped permanent magnet of square permanent magnet mechanism shell ", comprise permanent magnet mechanism housing, coil and the moving iron core that in the permanent magnet mechanism housing, is provided with, permanent magnet mechanism housing Cross section Design is square, in the permanent magnet mechanism housing, also be provided with the magnetic conductor that its cross section is square-outside and round-inside, between permanent magnet mechanism housing and moving iron core, be provided with magnetic conductor, circular switching winding and closing coil that its cross section is square-outside and round-inside, be fixed with the flat-plate type permanent-magnetic body between permanent magnet mechanism housing and the magnetic conductor, on moving iron core, drive link be installed.
Summary of the invention
For solving the deficiency of above permanent magnet mechanism automatic circuit, the objective of the invention is to propose a kind of method for designing and mechanism thereof of automatic circuit open type magnetism mechanism of the 24kV of being used for distribution line, concrete technical scheme is as follows:
A kind of method for designing of magnetism mechanism of automatic circuit is characterized in that silicon steel material is used for the material of the magnetic conductive loop of described automatic circuit magnetism mechanism, and concrete steps comprise:
1) makes yoke with silicon steel material; Cavity is set in yoke, closing coil is set in cavity; The centre position, bottom of cavity is provided with through hole;
2) moving iron core is set in the middle of closing coil, with being somebody's turn to do moving drive pull bar unshakable in one's determination; At the middle elastomer that is provided with of closing coil, elastomer is opposite to the magnetic force direction of moving the right moving iron core in elastic force unshakable in one's determination and closing coil energising back, controls moving unshakable in one's determination in the axial action of closing coil jointly; Pull bar passes from the through hole of cavity bottom;
3) make the shell of the magnetism mechanism of this automatic circuit of the outer wall of yoke.
Constitute yoke with a plurality of silicon steel sheet stacks, corresponding to the shape of yoke, yoke difformity position is provided with the silicon steel sheet of respective shapes.
Described elastomer adopts spring, spring axially and closing coil axial consistent; Spring one end and moving unshakable in one's determination the connection, the other end connects the bottom of cavity.
Cavity top in yoke is provided with through hole, is used to hold moving unshakable in one's determination; In yoke and moving contact position unshakable in one's determination permanent magnetic material is set; Moving iron core is made barrel shape, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided for the through hole that passes of pull bar at the end;
Move openend and corresponding position, yoke cavity bottom position pad magnetic conductor unshakable in one's determination at barrel shape, magnetic conductor can block moving iron core after feasible moving iron core was subjected to magnetic force, was unlikely to smash yoke.
Non-magnetic conduction end cap is set on the top of yoke; The end cap center is provided with and only is used for the through hole that pull bar passes.
Described yoke adopts ferrite with the permanent magnetic material of the contact position of moving iron core.
A kind of magnetism mechanism of using the automatic circuit of said method design comprises closing coil 1.3, separating brake elastomer 1.5, yoke 1.2, moving iron core 1.6 and insulated tension pole 1.8;
Surround cavity in the described yoke 1.2, closing coil 1.3 and moving unshakable in one's determination 1.6 are set in the cavity; Closing coil 1.3 is around moving unshakable in one's determination 1.6;
Insulated tension pole 1.8 is connected with moving unshakable in one's determination 1.6; The elastomeric end of separating brake is connected with moving unshakable in one's determination 1.6, and the other end is located at cavity bottom and connects;
The material of described yoke 1.2 is a silicon steel; The outer wall of yoke 1.2 is the shell of this magnetism mechanism.
A plurality of silicon steel sheet stacks constitute yoke 1.2, and corresponding to the shape of yoke 1.2, the silicon steel sheet shape of yoke 1.2 difformity positions is corresponding with the shape of yoke 1.2;
Described separating brake elastomer 1.5 is springs, spring axially and closing coil 1.3 axially identical;
The cavity top of yoke 1.2 is provided with through hole, and size is corresponding with moving 1.6 profiles unshakable in one's determination; Be provided with permanent magnetic material 1.7 in yoke 1.2 and moving unshakable in one's determination 1.6 contact position; Described moving unshakable in one's determination 1.6 is barrel shapes, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided with at the end and is used for the through hole that insulated tension pole 1.8 passes;
Be lined with corresponding magnetic conductor 1.4 in barrel shape moving unshakable in one's determination 1.6 openend and corresponding position, yoke cavity bottom position.
Be provided with non-magnetic conduction end cap 1.1 on the top of yoke 1.2; End cap 1.1 centers are provided with and only are used for the through hole that insulated tension pole 1.8 passes.
Described yoke 1.2 is a ferrite with the permanent magnetic material 1.7 of moving unshakable in one's determination 1.6 contact position.
Described yoke is an integral body that is formed by the silicon steel sheet stack, and promptly the magnetic conductive loop of this mechanism utilizes silicon steel sheet to be formed by stacking.The magnetic conductive loop of permanent magnet mechanism of the prior art generally adopts electrical pure iron, No. 10 steel, No. 20 steel or A3 steel.The magnetic property of silicon steel sheet is best, but because the requirement of the mechanical property of itself, can not make the cylindrical shape of complete closed and square, moreover the technological requirement of stack is higher.In order to save cost, so be not applied on the permanent magnet mechanism.This mechanism breaks the normal procedure, and utilizes unenclosed construction, and silicon steel sheet is applied in this mechanism, and experimental result shows that every mechanical performance parameter is good, and the exciting curent that especially is embodied in divide-shut brake is little, on this advantage.
Magnetic material right and wrong NeFeB alloy material ferrite between described moving iron core and the yoke.The permanent magnetic material that existing permanent magnet mechanism adopted all is to use neodymium iron boron NeFeB, because its stable power producing characteristics is by widespread usage; Its shortcoming is, when it was applied on the permanent magnet mechanism, the magnetic resistance of self was bigger, and the exciting curent value that needs during mechanism action is bigger, and the controller of permanent magnet mechanism is partly had relatively high expectations, and causes whole maintenance cost to increase.Behind non-neodymium iron boron (NeFeB) alloy material that this mechanism selects for use, when the closing coil of this mechanism feeds reverse current, the magnetic field that coil produced is opposite with the magnetic direction that non-neodymium iron boron (NeFeB) alloy material produces, this material is demagnetization fast, and magnetic resistance own is compared a little order of magnitude with neodymium iron boron, the reluctance force that is produced reduces, thereby the responsiveness of mechanism is accelerated, and the exciting curent value diminishes.After this mechanism action was finished, the magnetic field that the closing coil electric current is produced was enough to make iron core to remain on end position for reverse the magnetizing of this material.
The advantage of this magnetism mechanism automatic circuit comprises:
One, the whole magnetic conductive loop of mechanism is formed by stacking by silicon steel sheet, and magnetic loss and eddy current loss are minimum, and the magnetic flux utilance exceeds 30% than permanent magnet mechanism.
Two, mechanism is provided by non-NeFeB alloy material at the static confining force of two ends, its intrinsic characteristic makes it at actuating contact of breaker separating brake or when closing a floodgate, and response speed is faster, divides, switching current is littler, reduced the performance requirement of electronic-controlled installation, reached 20 years non-maintaining.
Three, because this mechanism is not provided with shell, coil exposed is in air, and when coil fed electric current, the heat that is produced was easy to distribute, and does not cause mechanism's coil overheated, makes its decreasing insulating.
Above advantageous feature not only makes this mechanism body excellent performance, because the advantage of low energy consumption makes the useful life of electronic controller more permanent, the insulation property of the body of circuit breaker are greatly improved simultaneously simultaneously.
In sum, it is more stable that the technical program and similar mechanism compare performance, and power consumption is little, and the longer service life of its electronic-controlled installation is particularly useful for the automatic circuit of 24kV.
Description of drawings
Fig. 1 is this magnetism mechanism internal structure schematic diagram.
Fig. 2 is for being equipped with the automatic circuit structural representation of this magnetism mechanism and vacuum circuit-breaker.
Fig. 3 is the demagnetization curve of ferrite permanent-magnet materials.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
A kind of method for designing of magnetism mechanism of automatic circuit is characterized in that silicon steel material is used for the material of the magnetic conductive loop of described automatic circuit magnetism mechanism, and concrete steps comprise:
1) makes yoke with silicon steel material; Cavity is set in yoke, closing coil is set in cavity; The centre position, bottom of cavity is provided with through hole;
2) moving iron core is set in the middle of closing coil, with being somebody's turn to do moving drive pull bar unshakable in one's determination; At the middle elastomer that is provided with of closing coil, elastomer is opposite to the magnetic force direction of moving the right moving iron core in elastic force unshakable in one's determination and closing coil energising back, controls moving unshakable in one's determination in the axial action of closing coil jointly; Pull bar passes from the through hole of cavity bottom;
3) make the shell of the magnetism mechanism of this automatic circuit of the outer wall of yoke.
Constitute yoke with a plurality of silicon steel sheet stacks, corresponding to the shape of yoke, yoke difformity position is provided with the silicon steel sheet of respective shapes.
Described elastomer adopts spring, spring axially and closing coil axial consistent; Spring one end and moving unshakable in one's determination the connection, the other end connects the bottom of cavity.
Cavity top in yoke is provided with through hole, is used to hold moving unshakable in one's determination; In yoke and moving contact position unshakable in one's determination permanent magnetic material is set; Moving iron core is made barrel shape, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided for the through hole that passes of pull bar at the end;
Move openend and corresponding position, yoke cavity bottom position pad magnetic conductor unshakable in one's determination at barrel shape, magnetic conductor can block moving iron core after feasible moving iron core was subjected to magnetic force, was unlikely to smash yoke.
Non-magnetic conduction end cap is set on the top of yoke; The end cap center is provided with and only is used for the through hole that pull bar passes.
Described yoke adopts ferrite with the permanent magnetic material of the contact position of moving iron core.
Specifically, with reference to the accompanying drawings 1, a kind of magnetism mechanism of using the automatic circuit of said method design comprises closing coil 1.3, separating brake elastomer 1.5, yoke 1.2, moving unshakable in one's determination 1.6 and insulated tension pole 1.8;
Surround cavity in the described yoke 1.2, closing coil 1.3 and moving unshakable in one's determination 1.6 are set in the cavity; Closing coil 1.3 is around moving unshakable in one's determination 1.6;
Insulated tension pole 1.8 is connected with moving unshakable in one's determination 1.6; The elastomeric end of separating brake is connected with moving unshakable in one's determination 1.6, and the other end is located at cavity bottom and connects;
The material of described yoke 1.2 is a silicon steel; The outer wall of yoke 1.2 is the shell of this magnetism mechanism.
A plurality of silicon steel sheet stacks constitute yoke 1.2, and corresponding to the shape of yoke 1.2, the silicon steel sheet shape of yoke 1.2 difformity positions is corresponding with the shape of yoke 1.2;
Described separating brake elastomer 1.5 is springs, spring axially and closing coil 1.3 axially identical;
The cavity top of yoke 1.2 is provided with through hole, and size is corresponding with moving 1.6 profiles unshakable in one's determination; Be provided with permanent magnetic material 1.7 in yoke 1.2 and moving unshakable in one's determination 1.6 contact position; Described moving unshakable in one's determination 1.6 is barrel shapes, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided with at the end and is used for the through hole that insulated tension pole 1.8 passes;
Be lined with corresponding magnetic conductor 1.4 in barrel shape moving unshakable in one's determination 1.6 openend and corresponding position, yoke cavity bottom position.
Be provided with non-magnetic conduction end cap 1.1 on the top of yoke 1.2; End cap 1.1 centers are provided with and only are used for the through hole that insulated tension pole 1.8 passes.
Described yoke 1.2 is a ferrite with the permanent magnetic material 1.7 of moving unshakable in one's determination 1.6 contact position.
The application of this magnetism mechanism, as Fig. 2, circuit breaker comprises that 2.1 magnetism mechanisms, 2.2 connect connecting lever, 2.3 insulation supports, 2.4 insulated tension poles, 2.5 vacuum interrupters, 2.6 upper bushes.(, further not limited the breaker structure in this example) at this because the structure of circuit breaker is very common in the prior art
The insulated tension pole 1.8 of the open type magnetism mechanism of this automatic circuit also passes through the insulated tension pole 2.4 that connecting lever 2.2 connects circuit breakers, and circuit breaker is changed at separating brake and between closing a floodgate.The course of work is, combined floodgate capacitor in the control module injects a pulse current to mechanism's coil, electric current in the coil makes the electromagnetic attraction between upper magnet yoke and the moving iron core strengthen, and finally overcomes tripping spring power, moving insulated tension pole and the moving contact setting in motion of driving unshakable in one's determination.When moving iron core moves at the beginning, this moment, closing speed can reach 1m/s, and best closing speed and power producing characteristics have been guaranteed circuit breaker not spring of vacuum interrupter when closing a floodgate, and reduced the possibility that vacuum interrupter is restriked.Along with moving gap unshakable in one's determination and magnetic inductive block reduces, magnetic force further strengthens, and moving unshakable in one's determination the acceleration moves downward, and in this process, moving pulling sluice separating spring unshakable in one's determination is its energy storage.This moment, insulated tension pole drive connecting lever and moving contact moved to closing position, when arriving closing position, coil current makes the magnetic material state that reaches capacity, and cuts off the coil current that control module is sent simultaneously, and the conveniently moving iron core of the remanent magnetism of non-NeFeB alloy magnetic material can remain on closing position.When closing position, tripping spring is energy storage, for next separating brake is got ready simultaneously.This moment, connecting lever 2.2 made contact of breaker remain on closing position (as shown in Figure 2).
When needs carried out sub-switching operation, the separating brake capacitor in the control module injected a current impulse opposite with the switching current direction to mechanism's closing coil, and the time is 15～20ms.This moment, electric current will produce the part erasure effect to magnetic material, reduce closing retention force, the opposite force of the tripping spring of energy storage made release unshakable in one's determination and drove moving contact rapidly to the motion of separating brake direction by connecting lever this moment, finally remained on the separating brake position by tripping spring.
Performance evaluation:
The whole magnetic conductive loop of this mechanism is formed by stacking by the most excellent silicon steel sheet of magnetic property, and magnetic loss and eddy current loss are minimum, and the magnetic flux utilance exceeds 30% than permanent magnet mechanism.Below be about the magnetic property linearization equations, because silicon steel sheet magnetic resistance R is less, silicon steel sheet is during as conductor, and ∑ (IN) falls in the magnetic pressure that is produced
cLess, thus it is less to make branch, closing coil produce the coil magnetic potential, thus the exciting curent that coil is produced is less.
Magnetic potential formula IN=F=Φ * R magnetic flux formula Φ=BS
The magnetic potential equation
In the formula, F is suction (kgf); B is air gap flux density (G); S is the long-pending (cm of pole-face
2); I is a coil current; N is a coil turn; φ is air-gap flux (Mx);
For magnetic pressure in the working gas gap is fallen; ∑ (IN)
cThe summation of falling for conductor each several part magnetic pressure; ∑ (IN)
FgThe summation of falling for the non-working-gap magnetic pressure; Coil magnetic potential IN.As Fig. 3, the demagnetization curve of two kinds of permanent magnetic materials is to characterize permanent magnetic material magnetic stability curve.As seen from the figure, when applying demagnetizing field intensity to Nd-Fe-Bo permanent magnet material, because demagnetization curve and magnetic recoil line overlap, so when the permanent magnet mechanism coil passes through reverse current, the demagnetizing field intensity that electric current produced can make the magnetic property of NdFeB material own descend, when stopping to feed electric current, its magnetic property can return to initial value, therefore existing permanent magnet mechanism all can adopt Nd-Fe-Bo permanent magnet material, but because the magnetic resistance of self is bigger, the exciting curent value that needs during mechanism action is bigger, and the controller of permanent magnet mechanism is partly had relatively high expectations.Whole maintenance cost increases.
The ferrite that this programme is selected for use, the first half of the demagnetization curve of ferrite permanent-magnet materials is a straight line as shown in Figure 3, when demagnetizing field intensity was no more than flex point K, recoil line overlapped with the straightway of demagnetization curve.After demagnetizing field intensity surpassed flex point, its magnetic resistance can sharply reduce, and the electric current of coil generation can sharply reduce so.The magnetic field that coil produced is opposite with the magnetic direction that alloy material produces.This material is demagnetization fast, and magnetic resistance own compares a little order of magnitude with neodymium iron boron, and the reluctance force that is produced reduces, its intrinsic characteristic makes it when actuating contact of breaker separating brake or combined floodgate, response speed is faster, divides, switching current is littler, reduced the performance requirement of electronic-controlled installation.
Because this mechanism does not have shell, the closing coil of mechanism is exposed in the air, and when coil fed electric current, the heat that is produced was easy to distribute, and does not cause mechanism's coil overheated, makes its decreasing insulating.
Claims (10)
1. the method for designing of the magnetism mechanism of an automatic circuit is characterized in that silicon steel material is used for the material of the magnetic conductive loop of described automatic circuit magnetism mechanism, and concrete steps comprise:
1) makes yoke with silicon steel material; Cavity is set in yoke, closing coil is set in cavity; The centre position, bottom of cavity is provided with through hole;
2) moving iron core is set in the middle of closing coil, with being somebody's turn to do moving drive pull bar unshakable in one's determination; At the middle elastomer that is provided with of closing coil, elastomer is opposite to the magnetic force direction of moving the right moving iron core in elastic force unshakable in one's determination and closing coil energising back, controls moving unshakable in one's determination in the axial action of closing coil jointly; Pull bar passes from the through hole of cavity bottom;
3) make the shell of the magnetism mechanism of this automatic circuit of the outer wall of yoke.
2. the method for designing of the magnetism mechanism of automatic circuit according to claim 1 is characterized in that constituting yoke with a plurality of silicon steel sheet stacks, and corresponding to the shape of yoke, yoke difformity position is provided with the silicon steel sheet of respective shapes.
3. the method for designing of the magnetism mechanism of automatic circuit according to claim 1 and 2 is characterized in that described elastomer adopts spring, spring axially and closing coil axial consistent; Spring one end and moving unshakable in one's determination the connection, the other end connects the bottom of cavity.
4. the method for designing of the magnetism mechanism of automatic circuit according to claim 3 is characterized in that on the cavity top of yoke through hole being set, and is used to hold moving unshakable in one's determination; In yoke and moving contact position unshakable in one's determination permanent magnetic material is set; Moving iron core is made barrel shape, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided for the through hole that passes of pull bar at the end;
Move openend and corresponding position, yoke cavity bottom position pad magnetic conductor unshakable in one's determination at barrel shape, magnetic conductor can block moving iron core after feasible moving iron core was subjected to magnetic force, was unlikely to smash yoke.
5. the method for designing of the magnetism mechanism of automatic circuit according to claim 4 is characterized in that being provided with on the top of yoke non-magnetic conduction end cap; The end cap center is provided with and only is used for the through hole that pull bar passes.
6. the method for designing of the magnetism mechanism of automatic circuit according to claim 5 is characterized in that the described yoke and the permanent magnetic material of the contact position of moving iron core adopt ferrite.
7. the magnetism mechanism of the automatic circuit of application rights requirement 1～6 an arbitrary method design comprises closing coil (1.3), separating brake elastomer (1.5), yoke (1.2), moving (1.6) and insulated tension pole (1.8) unshakable in one's determination;
Described yoke surrounds cavity in (1.2), and closing coil (1.3) and moving (1.6) unshakable in one's determination are set in the cavity; Closing coil (1.3) is around moving (1.6) unshakable in one's determination;
Insulated tension pole (1.8) is connected with moving (1.6) unshakable in one's determination; The elastomeric end of separating brake is connected with moving (1.6) unshakable in one's determination, and the other end is located at cavity bottom and connects;
The material that it is characterized in that described yoke (1.2) is a silicon steel; The outer wall of yoke (1.2) is the shell of this magnetism mechanism.
8. the magnetism mechanism of automatic circuit according to claim 7 is characterized in that a plurality of silicon steel sheet stacks constitute yoke (1.2), and corresponding to the shape of yoke (1.2), the silicon steel sheet shape of yoke (1.2) difformity position is corresponding with the shape of yoke (1.2);
Described separating brake elastomer (1.5) is a spring, spring axially and closing coil (1.3) axially identical;
The cavity top of yoke (1.2) is provided with through hole, and size is corresponding with moving (1.6) profile unshakable in one's determination; Be provided with permanent magnetic material (1.7) in yoke (1.2) and the contact position of moving (1.6) unshakable in one's determination; Described moving iron core (1.6) is a barrel shape, and described spring is located in the bucket, and an end was connected with the bucket end; Bucket is provided with at the end and is used for the through hole that insulated tension pole (1.8) passes;
Openend and corresponding position, yoke cavity bottom position at barrel shape moving (1.6) unshakable in one's determination are lined with corresponding magnetic conductor (1.4).
9. the magnetism mechanism of automatic circuit according to claim 8 is characterized in that being provided with non-magnetic conduction end cap (1.1) on the top of yoke (1.2); End cap (1.1) center is provided with and only is used for the through hole that insulated tension pole (1.8) passes.
10. the magnetism mechanism of automatic circuit according to claim 9 is characterized in that the described yoke (1.2) and the permanent magnetic material (1.7) of the contact position of moving (1.6) unshakable in one's determination are ferrites.
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| CN109215934A (en) * | 2017-07-04 | 2019-01-15 | 西门子股份公司 | Magnetictrip for electromagnetic switchgear |
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| CN201549391U (en) * | 2009-11-13 | 2010-08-11 | 南京因泰莱配电自动化设备有限公司 | Residual magnetism mechanism for recloser |
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| WO1988005207A1 (en) * | 1986-12-26 | 1988-07-14 | Mitsubishi Mining & Cement Co., Ltd. | Electromagnetic actuator |
| JP3441360B2 (en) * | 1997-03-25 | 2003-09-02 | 株式会社東芝 | Circuit breaker operating device |
| CN2456280Y (en) * | 2000-11-10 | 2001-10-24 | 肖建华 | Permenant magnet operating mechanism |
| US7518269B2 (en) * | 2005-03-18 | 2009-04-14 | Ls Industrial Systems Co., Ltd. | Actuator using permanent magnet |
| JP2006324399A (en) * | 2005-05-18 | 2006-11-30 | Mitsubishi Electric Corp | Actuator and actuator driving device |
| CN2874743Y (en) * | 2005-11-08 | 2007-02-28 | 张佩军 | Electromagnetic operation permanent magnet keeping operation mechanism |
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| CN201549391U (en) * | 2009-11-13 | 2010-08-11 | 南京因泰莱配电自动化设备有限公司 | Residual magnetism mechanism for recloser |
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| CN109215934A (en) * | 2017-07-04 | 2019-01-15 | 西门子股份公司 | Magnetictrip for electromagnetic switchgear |
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