CN103463857B - High-gradient magnetic circuit structure of filter - Google Patents

Abstract

The invention discloses a high-gradient magnetic circuit structure of a filter. A two-stage external oil-water heat exchange system is adopted in the cooling manner of the high-gradient magnetic circuit structure, and the coil structure of the high-gradient magnetic circuit structure is a multi-layer concentric structure; cooling insulation transformer oil flows among coils, absorbs heat of the coils generated by vortex flow and also plays a good role of insulation protection; insulation transformer oil absorbing heat can be conveyed into an external heat exchanger by a power pump (a disc type oil pump for a transformer), and is displaced by cooling water, and then cold insulation transformer oil returns into the high-gradient magnetic circuit structure for next circulation. The high-gradient magnetic circuit structure has the advantages of reasonability, compactness, high magnetic potential, high suction force, high action space, long time of duration, long service life, simplicity in operation and maintenance, little environmental pollution and the like, and can operate on a display screen and alarm automatically during the whole process.

Description

A kind of high-gradient magnetic circuit structure of filter

Technical field

The present invention relates to magnetization technology field.Be specially magnetized filtering technical field, relate to a kind of high-gradient magnetic circuit structure of filter, it is applicable to the deironing of the water treatment system of the industries such as electric power.

Background technology

The aqueduct of power department can corrode through long-term running and produce a large amount of metal oxides, and the product after these corrosion can be free on metal surface, and is dispersed in water.And the oxide of iron can deposit and becomes Ferric oxide scale on the tube wall of high hot-zone, can accelerate the underdeposit corrosion of pipe in the work of high hot-zone, consequence is very serious simultaneously.As can be seen here, strict controlling suspension iron content in feedwater, is that power plant and heating enterprise ensure the link that whole unit safety, economical operation are very important.Especially even more important for high parameter, jumbo generating set.

Power industry has hydrophobic, condensate water and production backwater to contain very high heat content, repeats recycling from the resource that economizes on resources, improves, comprehensively reduces cost of electricity-generating angle, needs hydrophobic, condensate water and production backwater to carry out all reclaiming as unit make-up water.And high gradient magnetic filter is used in the energy-conservation recycling of hydrophobic, condensate water and production backwater, achieves significant effect.Be wherein its essential place to the design of the high-gradient magnetic circuit structure of the key effect that its filter plays, iron content is reduced to raising effluent characteristics most important, and the precision of process can reach micron level.

And more effective high-gradient magnetic circuit structure filter type is the electromagnetic filter filtered water system using the external heat exchange of this profit twin-stage.Electromagnetic filter is made up of container, the high-gradient magnetic circuit structure being enclosed within container exterior and the filter cartridge that is contained in internal tank.Magnet exciting coil is had in high-gradient magnetic circuit structure; Magnetic conduction matrix is had in filter cartridge; There are the water-in and water-out be connected with exterior line to take at tank body of container two ends.By the magnetization of outside high-gradient magnetic circuit structure to center filter cartridge, enable the impurity in internal tank water be filtered fuse absorption and by backwash despumation.High-gradient magnetic circuit structure serves very great effect to water filtration, the effect that the difference of its structure and change will directly affect deironing.

The high-gradient magnetic circuit structure of the electromagnetic filter applied in water system at present has internal water cooling type structure.The magnetic structure inside of internal water cooling type electromagnetic filter is provided with hollow copper tubing Encircling coils structure, its coil heating is the type of cooling heat radiation by leaking water in copper pipe, though the cooling effect of water is good, but can patina be produced when longtime running, pipe inside can produce cavitation erosion, local temperature rise can hurried rising, cooling effect is caused seriously to reduce, coil temperature extremely increases, coil insulation defencive function reduces, service life has a greatly reduced quality, total power consumption is also very big, its cost is also high, simultaneously with the connection of external hose also very easily seepage, require higher to deployment tube Wiring technology, difficulty in arrangement etc. problem.

Along with the high standard of the technical indicator of water treatment aspect, the requirement of its water system to filter is also more and more higher, also more and more accurate to the isoparametric control overflow of iron content in water, this just has higher requirement to the device Filters processing water system especially its high-gradient magnetic circuit structure.

Summary of the invention

In order to solve the problem; the present inventor is through long term test and research; a kind of high-gradient magnetic circuit structure of filter is proposed; the high-gradient magnetic circuit structure of this filter is applicable to magnetic filter; it in order to purify water, can serve the normal operation of the important machinery equipment of protection power plant and heating enterprise.

According to technical scheme of the present invention, a kind of high-gradient magnetic circuit structure of filter is provided, what this high-gradient magnetic circuit structure type of cooling adopted is the external oil water heat exchange system of twin-stage, and high-gradient magnetic circuit structure loop construction is multilayer concentric structure, between coil, stream has cooling insulating transformer oil, the insulating transformer heat that produced because of eddy current by absorbing coil of oil and can play again good insulation protection effect; The heat insulation transformer oil absorbed can be transported in external heat exchanger by kinetic pump transformer disc type oil pump, and is cemented out by cooling water, and cold insulation transformer oil returns in high-gradient magnetic circuit structure and carries out next circulation.

Wherein, this high-gradient magnetic circuit structure comprises dehydrating breather 11, oil injection component 28 and the excitation terminal box 29 on coiling inner core 2, conservator cover plate 1, upper yoke plate 4, lower yoke plate 6, insulation board 12, magnet exciting coil 5, coil brace 7, collets 8, insulating bar 9 and upper mounted plate 101, bottom plate 102 and conservator cover plate.

Further, coiling inner core 2 be positioned at this high-gradient magnetic circuit structure innermost layer and with the central axes of this high-gradient magnetic circuit structure; The internal diameter of conservator cover plate 1 connects with the upper end of coiling inner core and on it, plane orthogonal, in the central axis of this high-gradient magnetic circuit structure, is positioned at the top of high-gradient magnetic circuit structure; Upper yoke plate 4 is positioned at immediately below conservator cover plate in a distance, and upper yoke plate 4 inboard also borders on coiling inner core and on it plane orthogonal in the central axis of this high-gradient magnetic circuit structure; The internal diameter of lower yoke plate 6 connects with the lower end of coiling inner core, and namely immediately below upper yoke plate in a distance, and lower yoke plate 6 lower plane is also perpendicular to the central axis of this high-gradient magnetic circuit structure; Insulation board 12 to be positioned between yoke plate 4, lower yoke plate 6 and to be centered around outside coiling inner core one week; Each layer winding of magnet exciting coil 5 and the central axis coaxial of coiling inner core, and between upper yoke plate and lower yoke plate, have certain intervals, simultaneously again in the outside of insulation board; Coil brace 7 is at upper yoke plate or between lower yoke plate and magnet exciting coil, and its one end connects with upper yoke plate or lower yoke plate, and the other end and magnet exciting coil keep certain insulation clearance, and outside the insulation board of coiling inner core, border equal portions are uniformly distributed simultaneously; Insulation clearance collets 8 between magnet exciting coil and coil brace are isolated; Insulating bar 9 is positioned at outside insulation board in innermost one week, the inner circumferential of nexine coil, and be close to the side of coil brace, and the insulating bar of nexine is thicker, other outer field insulating bar is all between each layer winding of magnet exciting coil, and outwards arrange along radial direction successively, and the while that border equal portions being uniformly distributed together with coil brace, rod is relatively thin; Upper mounted plate 101 and coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely insulating bar is between coil brace and upper mounted plate and bottom plate, and its facade connects with upper yoke plate simultaneously; The facade of bottom plate 102 connects with lower yoke plate, and also with coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely going up bottom plate is exactly to point Distribution and localization such as the borders of insulating bar, and radial location fixes by each layer winding of magnet exciting coil; The adapter of dehydrating breather 11 connects with conservator cover plate and above it, sets up the oil injection component 28 of oiling passage simultaneously, and realize the excitation terminal box 29 of excitation connection function above conservator cover plate.

Preferably, high-gradient magnetic circuit structure is cylinder-like structure.

More preferably, cylinder-like structure bottom by coiling inner core 2, upper yoke plate 4, the lower yoke plate 6 connected bottom, be enclosed within magnet exciting coil 5 below outside coiling inner core, upper yoke plate, above lower yoke plate, and the magnetic conductive cylinder 3 of outermost side forms annular space.

More preferably, the cooling oil duct of annulus up and down that cylinder-like structure has upper yoke plate 4, forms between lower yoke plate 6 and magnet exciting coil 5, and penetrating up and down multi-concentric magnet exciting coil 5 interannular, cooling oil duct between coiling inner core and nexine coil, between magnetic conductive cylinder and outer coil that the insulating bar 9 to connect with upper yoke plate 4, lower yoke plate 6 forms, above-mentioned cooling oil duct together form the main body of oily cool cycles internal channel.

More preferably, isolated insulation is carried out with collets 8 between the magnet exciting coil 5 of cylinder-like structure bottom and coil brace 7.

Additionally, the top of cylinder-like structure fills insulating transformer oil by oil injection component to the below of the upper space of annulus and the bottom of cylinder-like structure.

According to another aspect of the present invention, provide a kind of method using high-gradient magnetic circuit structure, the cyclic process wherein cooling insulating transformer oil is:

The first step, first flowed out through upper yoke plate two place oil discharge orifice by the deep fat in the oil ring space between magnet exciting coil and upper yoke plate, then its two-way converges to outer oil circuit 19;

Second step, outer oil circuit 19 is connected through the entrance 20 of the first valve 221 with external oil pump and oil water heat exchange device assembly, and in external oil pump and oil water heat exchange device assembly, complete the cooling procedure of oil;

3rd step, flows through the second valve 222 from outlet 21 cold oil out of external oil pump and oil water heat exchange device assembly, enters outer oil pipe 23;

4th step, a two-way is also divided to flow back to from outer oil pipe 23, one tunnel is through oil pipe 24 and the first import 25 returned on lower yoke plate, and another road flows through oil pipe 26 and returns the second import 27 on lower yoke plate, and the linear position residing for two oilholes on upper yoke plate is perpendicular to the straight line residing for two oilholes on lower yoke plate;

5th step, the cold oil that two imports come to enter and mixed flow is carried out in oil ring space between magnet exciting coil and lower yoke plate from yoke plate bottom, then along between coiling inner core and coil, between multi-layer winding, between coil skin and magnetic conductive cylinder, the a large amount of heat energy produced when upwards ascension absorbing coil works simultaneously, until enter the oil ring space between magnet exciting coil and upper yoke plate;

5th step, the above-mentioned first step that circulates, to the 5th step, carries out the displacement of heat through iterative cycles process, the damage caused to prevent coil Yin Wendu too high.

Structure of the present invention is simple and clear, reasonable in design, applied widely.Have rational in infrastructure compact, magnetic potential is powerful, suction is high, action space is high, duration is long, can whole-process automatic display screen operate and report to the police, the advantage such as long service life, operation maintenance are simple, low in the pollution of the environment, be the magnetic structure of the high gradient of current desirable water treatment filter, working stability is reliable.

Accompanying drawing explanation

Fig. 1 is high-gradient magnetic circuit structure structural representation of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is coil groups structure sectional view of the present invention;

Fig. 4 is that coil groups structure of the present invention overlooks A-A sectional view;

Fig. 5 is the partial enlarged drawing of coil groups of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

It should be noted that, the main body of the high-gradient magnetic circuit structure of filter is a cylinder-like structure.In magnetic separation field, also there is no the boundary of clear and definite " high gradient " at present, but the magnetic field gradient of conventional magnetic plant is generally every millimeter of tens Gausses to hundreds of Gauss, and the magnetic field gradient of this high-gradient magnetic circuit structure is micron-sized, can reach 1000Gs/ μm; What the high-gradient magnetic circuit structure design that the present invention adopts adopted is dehydrating breather 11, oil injection component 28 and the excitation terminal box 29 etc. that closed loop comprises on coiling inner core 2, conservator cover plate 1, upper yoke plate 4, lower yoke plate 6, insulation board 12, magnet exciting coil 5, coil brace 7, collets 8, insulating bar 9 and upper mounted plate 101, bottom plate 102 and conservator cover plate.

The design philosophy of the technical solution used in the present invention is: high-gradient magnetic circuit structure (hereinafter referred to as the high-gradient magnetic circuit structure) design agents of filter is a cylindric enclosed construction up and down, and the superstructure of high-gradient magnetic circuit structure is made up of the magnetic conductive cylinder 3 of the coiling inner core 2 of uppermost conservator cover plate 1, nexine, outermost, the upper yoke plate 4 etc. of middle and upper part, substructure is by yoke plate under bottom 6, coiling inner core periphery is insulation board 12, with upper, what lower yoke plate was close to is coil brace 7, then being arranged on, coil brace is collets 8, upper, mid portion between lower collets is magnet exciting coil 5, with upper, between the multilayer concentric magnet exciting coil that lower yoke plate connects and have again insulating bar 9 between insulation board and magnet exciting coil nexine winding, with the upper mounted plate 101 of fixed insulation rod, bottom plate 102, the coiling inner core 2 shared with superstructure, upper yoke plate 4, magnetic conductive cylinder 3 grade is formed jointly, and the space on top and the space of bottom form connected component in the lump, cooling insulating transformer oil is filled in connected component, and oil is injected by the oil injection component 28 on conservator cover plate 1, but injecting height keeps the superstructure of high-gradient magnetic circuit structure will have the space of enough oil cooling heat expansion contractings, and the external circulating system of high-gradient magnetic circuit structure is by upper, lower two outsides are also passed through from upper yoke plate, the penetrating connection oil circuit 14 of conservator cover plate, 17 and the two oil circuits design 15 of upper outside, 18 are connected with external oil pump and oil water heat exchange device import 20, the high temperature oil on coil top is led in oil water heat exchange device by oil pump, and gain low-temperature oil through oil water heat exchange, from two oil circuits 24 of the lower outside be connected with lower yoke plate of bottom, 26 get back to the hydronic system of carrying out in high-gradient magnetic circuit structure, its pair of oil circuit design is to prevent coil local temperature rise too high, and two oil circuits of outside are to increase effective heat exchange area, the linear position residing for two oilholes particularly gone up on yoke plate is take a shorter way to reduce oil perpendicular to the straight line residing for two oilholes on lower yoke plate, reach cold cycling replacing effectively.

Further, high-gradient magnetic circuit structure of the present invention is with the multi-concentric magnet exciting coil 5 be coiled into by double glass fiber bag flat type aluminium wire by best radiating condition for core main body, with the upper and lower yoke plate 4 of high magnetic permeability, 6, the enclosed construction with the bilayer of upper and lower cartridge form that jointly forms of conservator cover plate 1, magnetic conductive cylinder 3 etc.It and center core form closed magnetic loop jointly, its generation to put on the background magnetic field of center filtration core very high, due to its force and the induced field produced with the acting in conjunction of center filter core and magnetic field gradient also very powerful, and action space height is very large, action time is also long, the magnetic force that so just can reach center filter core promotes rapidly and continues, strong adsorption is lived ferromagnetic fine particles in water, reach the powerful effect of filtering iron, its Ex-all rate is more than 95%.

Additionally; what the high-gradient magnetic circuit structure type of cooling of the present invention adopted is the external oil water heat exchange system of twin-stage; and high-gradient magnetic circuit structure loop construction is again multilayer concentric structure; between coil, stream has cooling insulating transformer oil; the i.e. oily amount of heat produced because of eddy current by absorbing coil of insulating transformer, it can play again good insulation protection effect in addition.Its deep fat absorbed can be transported in external heat exchanger by kinetic pump transformer disc type oil pump, and cemented out by the extraordinary water of cooling effect, and cold oil returns in high-gradient magnetic circuit structure, the technique of this cyclic process is rationally simple and direct, decrease maintenance cost, make system temperature rise evenly and obviously lower, decrease hot-spot phenomenon, service life also improves widely, also reaches energy-saving and cost-reducing object simultaneously.

After a cycle period terminates, solenoid power-off, the powerful induced field of filter core will disappear, also just suction-operated is lost to iron powder and brown iron oxide, and then by under backwash water and compressed-air actuated alternating action, the iron powder filtered down in this cycle and brown iron oxide are sprung back in sludge sump.Iron powder and brown iron oxide are exactly filtered out from water by filtration so repeatedly and cleaning.This high-gradient magnetic circuit structure serves crucial effect to the iron content controlled in water.

Water treatment high-gradient magnetic circuit structure is mounted in the outside of magnetic filter.And magnetic filter also comprises magnetization filter element and load the container of magnetized filtering.Middle container is the carrier of Inlet and outlet water, and it is the particular design of carrying out according to pressure vessel code.Magnetization filter element is placed in container, and it, under powerful background magnetic field effect, provides powerful induced field.And high-gradient magnetic circuit structure changes the basic of filter effect and key point, it and center core form closed magnetic loop jointly.

Particularly, the high-gradient magnetic circuit structure (hereinafter referred to as high-gradient magnetic circuit structure) of filter of the present invention, it is a cylinder-like structure, namely by the coiling inner core 2 of nexine, the conservator cover plate 1 of upper end, the lower upper yoke plate 4 leaving one section of space length apart from conservator cover plate, the lower yoke plate 6 connected bottom below upper yoke plate, be enclosed within the insulation board 12 outside coiling inner core, also have outside insulation board, below upper yoke plate, magnet exciting coil 5 above lower yoke plate, outermost magnetic conductive cylinder 3, upper, lower coil brace 7 between yoke plate and magnet exciting coil, collets 8 on coil brace, between multi-concentric magnet exciting coil, insulating bar 9 is also had between insulation board and nexine magnet exciting coil winding, fixed insulation rod with upper, it is upper that lower yoke plate connects, bottom plate 101, 102 and on conservator cover plate also have dehydrating breather 11, the formation such as oil injection component 28 and the excitation terminal box 29 realizing excitation wiring.In high-gradient magnetic circuit structure cooling insulating transformer oil circulation by between each winding of magnet exciting coil, between coiling inner core and magnet exciting coil nexine winding, circulate in magnetic conductive cylinder and outer magnet exciting coil winding oil duct, and be connected with external oil pump and oil water heat exchange device import 20 with the oil pipe line 15,18 designed from the penetrating connection oil circuit 14 of upper yoke plate 4, conservator cover plate 1 and two oil circuits of upper outside, and get back to the heat exchanging process of the outer circulation carried out in high-gradient magnetic circuit structure from two oil circuits 24,26 of the outside be connected with lower yoke plate of bottom.The annular space that cylinder-like structure top is made up of the conservator cover plate 1 of coiling inner core 2, upper end, the upper yoke plate 4 of the middle and upper part below conservator cover plate and the magnetic conductive cylinder 3 of peripheral side, it is the volume part calculated by the thermal coefficient of expansion of transformer oil, form the interior conservator space of high-gradient magnetic circuit structure, and by the volume change that it regulates oil temperature liter to bring, simultaneously also by the external connecting function of oiling function and excitation lead can be realized better.

Further, cylinder-like structure bottom is by coiling inner core 2, upper yoke plate 4, the lower yoke plate 6 connected bottom in addition, be enclosed within outside coiling inner core, below upper yoke plate, magnet exciting coil 5 above lower yoke plate, and the annular space that the magnetic conductive cylinder 3 of outermost side etc. is formed, that the multi-concentric magnet exciting coil 5 that is coiled into by double glass fiber bag flat type aluminium wire with best radiating condition is for core main body, upper with high magnetic permeability, lower yoke plate 4, 6 and the acting in conjunction of magnetic conductive cylinder 3, provide the key point of the high gradient magnetic circuit main structure design of filter background magnetic field, and and to be formed between the conservator cover plate 1 of high magnetic permeability there is upper and lower cartridge form, double-deck enclosed construction, its leakage field is minimum, little of from being less than or equal to 0.5mT beyond case wall one meter, and background magnetic field can up to 3000Gs.Due to it force and the high induced field of 20000Gs and the high magnetic field gradients of 1000Gs/ μm can be produced with the acting in conjunction of center filter core, action space height is very large, action time is also long, the magnetic force that so just can reach center filter core promotes rapidly and continues, it has strong suction-operated to by the oxide containing small iron in center core water, hydrate, the little oxide to 0.03 μm of-150 μm of iron of adsorbable particle and hydrate, reach the powerful effect of filtering iron.

The bottom of cylinder-like structure is while obtaining high-gradient magnetic circuit structure main field, the heat that its magnet exciting coil 5 self produces because of eddy current is also very high, therefore on have employed in its structure and having, lower yoke plate 4, the cooling oil duct of the annulus up and down formed between 6 and magnet exciting coil 5, and with upper, lower yoke plate 4, between each winding of multi-concentric magnet exciting coil 5 penetrating up and down formed between 6 insulating bars connected 9, between coiling inner core and magnet exciting coil nexine winding, cooling oil duct between magnetic conductive cylinder and outer magnet exciting coil winding, the main body of the oily cool cycles internal channel of common formation, and the heat that magnet exciting coil 5 produces utilizes its distinctive design feature exactly, derived by the absorption of the cooling insulating transformer oil at oil circulation passage, and transformer oil serves again the protective effect of insulation to magnet exciting coil 5.Isolated insulation is carried out with collets 8 between the magnet exciting coil 5 of cylinder-like structure bottom and coil brace 7, and pass through from the coil brace 7 be connected with upper and lower yoke plate 4,6, collets 8 on coil brace, the excitation coil fixing structure framework that the fixing insulating bar 9 of multi-concentric magnet exciting coil and the upper and lower fixing plate 10 be connected with upper and lower yoke plate of fixed insulation rod form.Vibration when wherein coil brace 7 carries coil working and the strength support of own wt; Insulating bar 9 has the Pleiotropic Protections making lattice coil spaced heat, cooling and insulation, is unlikely and makes coil inside produce hot-spot and reduce its service life; Upper and lower fixing plate 101,102 is the displacements preventing insulating bar from causing because of coil vibration, and make coil-span from being consistent, oil temperature reaches unanimity everywhere; And collets 8 are the important means carrying out insulation protection, it and coil brace form upper and lower oil ring passage jointly, make to keep suitable distance between coil and upper and lower yoke plate.Cylinder-like structure upper, lower two outsides are by from upper yoke plate 4, the penetrating connection oil circuit 14 of conservator cover plate 1 and two oil circuits 15 of upper outside, 18 designs are connected with external oil pump and oil water heat exchange device import 20, the high temperature oil on top is led in oil water heat exchange device by oil pump, and gain low-temperature oil through oil water heat exchange, from two oil circuits 24 of the lower outside be connected with lower yoke plate 6 of bottom, 26 get back to the cycling hot of carrying out in high-gradient magnetic circuit structure exchanges, magnet exciting coil 5 is made to be unlikely high temperature and to burn out, the cooling of oil namely carrys out heat exchange by water that cooling effect is fabulous, if the words of high oil temperature can make deterioration of oil or aging, and shorten its service life.Therefore a large amount of heat energy that magnet exciting coil 5 produces are cemented out by the mode of the external heat exchange of profit twin-stage.

In another embodiment, the magnetic circuit main body of filter high-gradient magnetic circuit structure of the present invention is the outer closure structure of a cylindric Dual-layer, the annular space that the superstructure of high-gradient magnetic circuit structure is made up of upper yoke plate 4 and the magnetic conductive cylinder 3 of the conservator cover plate 1 of coiling inner core 2, upper end, the middle and upper part below conservator cover plate, high-gradient magnetic circuit structure bottom is by the coiling inner core 2 shared with top, upper yoke plate 4, the lower yoke plate 6 connected bottom in addition, be enclosed within outside coiling inner core, below upper yoke plate, magnet exciting coil 5 above lower yoke plate, and it is outermost, the magnetic conductive cylinder 3 shared with top, with upper, the coil brace 7 that lower yoke plate connects, collets 8 between magnet exciting coil and coil brace, fixing multi-concentric magnet exciting coil and the insulating bar 9 between insulation board and magnet exciting coil nexine winding and fixed insulation rod with upper, the upper mounted plate 101 that lower yoke plate connects, bottom plate 102 grade forms, the penetrating up and down multi-concentric magnet exciting coil interannular formed between the cooling oil duct of the upper and lower annulus that the structure of high-gradient magnetic circuit structure bottom has upper yoke plate 4, form between lower yoke plate 6 with magnet exciting coil 5 and the insulating bar 9 connected with upper and lower yoke plate, the cooling oil duct between insulation board and magnet exciting coil nexine winding and between magnetic conductive cylinder and outer winding, the main body of the interior oil circulation canal of common formation, and be to lower and on circulation, upper and lower two outsides of high-gradient magnetic circuit structure are connected with oil pump and oil water heat exchange device import 20 by the design of the two oil circuits 15,18 from the penetrating connection oil circuit 14,17 of upper yoke plate 4, conservator cover plate 1 and upper outside, the high temperature oil on top is led in oil water heat exchange device by oil pump, and gain low-temperature oil through oil water heat exchange, the heat exchange of the outer circulation carried out in high-gradient magnetic circuit structure is got back to from two oil circuits 24,26 of the lower outside be connected with lower yoke plate of bottom.And the inside and outside oil circulation passage of high-gradient magnetic circuit structure constitutes unified circulating system, reach the cold operation state of coil uniform throughout, magnetic force is promoted rapidly, reduce the loss of iron tramp.

High-gradient magnetic circuit structure top has dehydrating breather 11 and oil injection component 28 to also have excitation terminal box 29, if a small amount of moisture moisture contained in magnet exciting coil epicoele is by solving in dehydrating breather 11, two is to set up oiling passage, prevents because work causes the loss of oil for a long time, i.e. supply.Three is the convenience for excitation lead, increases the function of excitation terminal box.

In more detail, the 3rd embodiment is with reference to shown in accompanying drawing 1-Fig. 5, and the particular location relation of high-gradient magnetic circuit structure is as described below: coiling inner core 2 be positioned at this high-gradient magnetic circuit structure innermost layer and with the central axes of this high-gradient magnetic circuit structure; The internal diameter of conservator cover plate 1 connects with the upper end of coiling inner core and on it, plane orthogonal, in the central axis of this high-gradient magnetic circuit structure, is positioned at the top of high-gradient magnetic circuit structure; Upper yoke plate 4 is positioned at immediately below conservator cover plate in a distance, and inboard also borders on coiling inner core and on it plane orthogonal in the central axis of this high-gradient magnetic circuit structure; The internal diameter of lower yoke plate 6 connects with the lower end of coiling inner core, and namely immediately below upper yoke plate in a distance, and its lower plane is also perpendicular to the central axis of this high-gradient magnetic circuit structure; Insulation board 12 to be positioned between upper and lower yoke plate and to be centered around outside coiling inner core one week; Each layer winding of magnet exciting coil 5 and the central axis coaxial of coiling inner core, and between upper yoke plate and lower yoke plate, have certain intervals, simultaneously again in the outside of insulation board; Coil brace 7 is under upper yoke plate between yoke plate and magnet exciting coil, and its one end connects with yoke plate under upper yoke plate, and the other end and magnet exciting coil keep certain insulation clearance, and outside the insulation board of coiling inner core, border equal portions are uniformly distributed simultaneously; Insulation clearance collets 8 between magnet exciting coil and coil brace are isolated; Insulating bar 9 is positioned at outside insulation board in innermost one week, the inner circumferential of nexine coil, and be close to the side of coil brace, and the insulating bar of nexine is thicker, other outer field insulating bar is all between each layer winding of magnet exciting coil, and outwards arrange along radial direction successively, and the while that border equal portions being uniformly distributed together with coil brace, rod is relatively thin; Upper mounted plate 101 and coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely insulating bar is between coil brace and upper mounted plate and bottom plate, and its facade connects with upper yoke plate simultaneously; The facade of bottom plate 102 connects with lower yoke plate, and also with coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely going up bottom plate is exactly to point Distribution and localization such as the borders of insulating bar, and radial location fixes by each layer winding of magnet exciting coil; The adapter of dehydrating breather 11 connects with conservator cover plate and above it, sets up the oil injection component 28 of oiling passage simultaneously, and realize the excitation terminal box 29 of excitation connection function above conservator cover plate.

Cylinder-like structure bottom is by coiling inner core 2, upper yoke plate 4, the lower yoke plate 6 connected bottom in addition, be enclosed within outside coiling inner core, below upper yoke plate, magnet exciting coil 5 above lower yoke plate, and the annular space that the magnetic conductive cylinder 3 of outermost side etc. is formed, that the multi-concentric magnet exciting coil 5 that is coiled into by double glass fiber bag flat type aluminium wire with best radiating condition is for core main body, upper with high magnetic permeability, lower yoke plate 4, 6 and the acting in conjunction of magnetic conductive cylinder 3, provide the key point of the high-gradient magnetic circuit structure design of filter background magnetic field, and and to be formed between the conservator cover plate 1 of high magnetic permeability there is upper and lower cartridge form, double-deck enclosed construction, its leakage field is minimum, little of from being less than or equal to 0.5mT beyond case wall one meter, and background magnetic field can up to 3000Gs.It and center core form closed magnetic loop.Due to it force and the high induced field of 20000Gs and the high magnetic field gradients of 1000Gs/ μm can be produced with the acting in conjunction of center filter core, the spatial altitude of effect is very large, action time is also long, the magnetic force that so just can reach center filter core promotes rapidly and continues, it has strong suction-operated to by the oxide containing small iron in center core water, hydrate, the little oxide to 0.03 μm of-150 μm of iron of adsorbable particle and hydrate, reach the powerful effect of filtering iron.

The bottom of cylinder-like structure is while obtaining main field, the heat that its magnet exciting coil 5 self produces because of eddy current is also very high, therefore on have employed in its structure and having, lower yoke plate 4, the cooling oil duct of the annulus up and down formed between 6 and magnet exciting coil 5, and with upper, lower yoke plate 4, multi-concentric magnet exciting coil 5 interannular penetrating up and down of composition between 6 insulating bars connected 9, between coiling inner core and nexine coil, cooling oil duct between magnetic conductive cylinder and outer coil, together form the main body of oily cool cycles internal channel, and the heat that magnet exciting coil 5 produces utilizes its distinctive design feature exactly, derived by the absorption of the cooling insulating transformer oil at oil circulation passage, and transformer oil serves insulation protection effect to magnet exciting coil 5 again.

Isolated insulation is carried out with collets 8 between the magnet exciting coil 5 of cylinder-like structure bottom and coil brace 7, and pass through from the coil brace 7 be connected with upper and lower yoke plate 4,6, collets 8 on coil brace, the excitation coil fixing structure framework that the fixing insulating bar 9 of multi-concentric magnet exciting coil and the upper and lower fixing plate 10 be connected with upper and lower yoke plate of fixed insulation rod form.Vibration when wherein coil brace 7 carries coil working and the strength support of own wt; Insulating bar 9 has the Pleiotropic Protections making lattice coil spaced heat, cooling and insulation, is unlikely and makes coil inside produce hot-spot and reduce its service life; Upper mounted plate 101, bottom plate 102 are the displacements preventing insulating bar from causing because of coil vibration, make coil-span from being consistent, oil temperature reaches unanimity everywhere, particularly the insulating bar of nexine is comparatively thick, is to leak water the impact on magnet exciting coil and insulating transformer oil of water temperature in tank body to reduce center; And collets 8 are the important means carrying out insulation protection, it and coil brace form upper and lower oil ring passage jointly, make to keep suitable distance between coil and upper and lower yoke plate, leave the space of diffusion and mixed flow.

The top of cylinder-like structure fills insulating transformer oil by oil injection component to the below of the upper space of annulus and the bottom of cylinder-like structure, but the space, large portion of its middle and upper part does not have oil, this is because: the heat transmission produced during a coil working gives insulating transformer oil, insulating transformer oil is made to absorb a large amount of heats and cause the expansion of oil, therefore be designed to enough open space to ensure the carrying out that oil expands, two is can set up oiling passage on conservator cover plate, and three is for the external of excitation lead is provided convenience.Therefore can adjust the breathing of oil volume caused by coil temperature change by the top torus space of cylinder-like structure, and realize its design functionally.

Upper and lower two outsides of cylinder-like structure are by being connected from the penetrating connection oil circuit 14,17 of upper yoke plate 4, conservator cover plate 1 and two oil circuits 15,18 design of upper outside with external oil pump and oil water heat exchange device import 20, the high temperature oil on top is led in oil water heat exchange device by oil pump, and gain low-temperature oil through oil water heat exchange, get back to the cycling hot of carrying out in high-gradient magnetic circuit structure from two oil circuits 24,26 of the lower outside that the oil pipe 23 of outlet 21 through bottom is connected with lower yoke plate 6 to exchange, make magnet exciting coil 5 be unlikely high temperature and burn out.And the cooling of oil carrys out heat exchange by the water that cooling effect is fabulous.If the words of high oil temperature can make deterioration of oil or aging, shorten its service life, therefore the heat that magnet exciting coil 5 produces is cemented out by the mode of the external heat exchange of profit twin-stage.

If breathe by dehydrating breather 11 containing a small amount of moisture or moisture and be resolved in magnet exciting coil 5 epicoele, thus prevent aqueous vapor to the destruction of insulation, extending oil deterioration, improve the service life of coil, preventing drain impurity from serving crucial effect to promoting magnetic suck simultaneously.

According to another aspect of the present invention, a kind of method using high-gradient magnetic circuit structure is provided, the cyclic process wherein cooling insulating transformer oil is: the first step, high temperature oil because of high-gradient magnetic circuit structure inside is distributed in the top of high-gradient magnetic circuit structure, namely first the deep fat in the oil ring space between magnet exciting coil and upper yoke plate is flowed out through upper yoke plate two place oil discharge orifice, wherein a place 13 to be connected with upper oil pipe 14 and to flow through oil pipe 15, another place 16 is connected with upper oil pipe 17, and flow through oil pipe 18, then its two-way converges to outer oil circuit 19, second step, outer oil circuit 19 is connected through the entrance 20 of the first valve 221 with external oil pump and oil water heat exchange device assembly, and in external oil pump and oil water heat exchange device assembly, complete the cooling procedure of oil, 3rd step, flows through the second valve 222 from outlet 21 cold oil out of external oil pump and oil water heat exchange device assembly, enters outer oil pipe 23, 4th step, a two-way is also divided to flow back to from outer oil pipe 23, one tunnel is through oil pipe 24 and the first import 25 returned on lower yoke plate, and another road flows through oil pipe 26 and returns the second import 27 on lower yoke plate, and the linear position residing for two oilholes on upper yoke plate is perpendicular to the straight line residing for two oilholes on lower yoke plate, 5th step, the cold oil that two imports come to enter and mixed flow is carried out in oil ring space between magnet exciting coil and lower yoke plate from yoke plate bottom, then along between coiling inner core and coil, between multi-layer winding, between coil skin and magnetic conductive cylinder, the a large amount of heat energy produced when upwards ascension absorbing coil works simultaneously, until enter the oil ring space between magnet exciting coil and upper yoke plate, at this moment oil also becomes deep fat from cold oil, this is the process of once oil circulation, oil namely carries out the displacement of heat through such iterative cycles process, the damage caused to prevent coil Yin Wendu too high.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (7)

1. the high-gradient magnetic circuit structure of a filter, it is characterized in that, what the high-gradient magnetic circuit structure type of cooling adopted is the external oil water heat exchange system of twin-stage, and high-gradient magnetic circuit structure loop construction is multilayer concentric structure, between coil, stream has cooling insulating transformer oil, and the heat that absorbing coil produces because of eddy current by insulating transformer oil is taken away and can play again good insulation protection effect; The heat insulation transformer oil absorbed can be transported in external heat exchanger by transformer disc type oil pump, and is cemented out by cooling water, and cold insulation transformer oil returns in high-gradient magnetic circuit structure and carries out next circulation;

This high-gradient magnetic circuit structure comprises dehydrating breather (11), oil injection component (28) and excitation terminal box (29) on coiling inner core (2), conservator cover plate (1), upper yoke plate (4), lower yoke plate (6), insulation board (12), magnet exciting coil (5), coil brace (7), collets (8), insulating bar (9) and upper mounted plate (101), bottom plate (102) and conservator cover plate;

Wherein, coiling inner core (2) is positioned at the innermost layer of this high-gradient magnetic circuit structure, and the central axis of coiling inner core (2) and the central axes of this high-gradient magnetic circuit structure; The internal diameter of conservator cover plate (1) connects with the upper end of coiling inner core and on it, plane orthogonal, in the central axis of this high-gradient magnetic circuit structure, is positioned at the top of high-gradient magnetic circuit structure; Upper yoke plate (4) is positioned at immediately below conservator cover plate in a distance, and upper yoke plate (4) inboard also border on coiling inner core and on it plane orthogonal in the central axis of this high-gradient magnetic circuit structure; The internal diameter of lower yoke plate (6) connects with the lower end of coiling inner core, and namely immediately below upper yoke plate in a distance, and lower yoke plate (6) lower plane is also perpendicular to the central axis of this high-gradient magnetic circuit structure; Insulation board (12) to be positioned between yoke plate (4), lower yoke plate (6) and to be centered around outside coiling inner core one week; Each layer winding of magnet exciting coil (5) and the central axis coaxial of coiling inner core, and between upper yoke plate and lower yoke plate, have certain intervals, simultaneously again in the outside of insulation board; Coil brace (7) is at upper yoke plate or between lower yoke plate and magnet exciting coil, and its one end connects with upper yoke plate or lower yoke plate, and the other end and magnet exciting coil keep certain insulation clearance, and outside the insulation board of coiling inner core, border equal portions are uniformly distributed simultaneously; Insulation clearance collets (8) between magnet exciting coil and coil brace are isolated; Insulating bar (9) is positioned at outside insulation board in innermost one week, the inner circumferential of nexine coil, and be close to the side of coil brace, and the insulating bar of nexine is thicker, other outer field insulating bar is all between each layer winding of magnet exciting coil, and outwards arrange along radial direction successively, and the while that border equal portions being uniformly distributed together with coil brace, rod is relatively thin; Upper mounted plate (101) and coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely insulating bar is between coil brace and upper mounted plate and bottom plate, and its facade connects with upper yoke plate simultaneously; The facade of bottom plate (102) connects with lower yoke plate, and also with coil brace parallel arrangement, its spacing is the size positions of insulating bar, and namely going up bottom plate is exactly border equal portions Distribution and localization to insulating bar, and radial location fixes by each layer winding of magnet exciting coil; The adapter of dehydrating breather (11) connects with conservator cover plate and above it, sets up the oil injection component (28) of oiling passage simultaneously, and realize the excitation terminal box (29) of excitation connection function above conservator cover plate.

2. high-gradient magnetic circuit structure according to claim 1, is characterized in that: high-gradient magnetic circuit structure is cylinder-like structure.

3. high-gradient magnetic circuit structure according to claim 2, it is characterized in that: described cylinder-like structure bottom by coiling inner core (2), upper yoke plate (4), the lower yoke plate (6) connected bottom, be enclosed within magnet exciting coil (5) below outside coiling inner core, upper yoke plate, above lower yoke plate, and the magnetic conductive cylinder of outermost side (3) forms annular space.

4. high-gradient magnetic circuit structure according to claim 2, it is characterized in that: the cooling oil duct of annulus up and down that cylinder-like structure has upper yoke plate (4), forms between lower yoke plate (6) and magnet exciting coil (5), and penetrating up and down multi-concentric magnet exciting coil (5) interannular, cooling oil duct between coiling inner core and nexine coil, between magnetic conductive cylinder and outer coil that the insulating bar (9) to connect with upper yoke plate (4), lower yoke plate (6) forms, above-mentioned cooling oil duct together form the main body of oily cool cycles internal channel.

5. high-gradient magnetic circuit structure according to claim 2, is characterized in that: carry out isolated insulation with collets (8) between the magnet exciting coil (5) of cylinder-like structure bottom and coil brace (7).

6. high-gradient magnetic circuit structure according to claim 2, is characterized in that: the top of cylinder-like structure fills insulating transformer oil by oil injection component to the below of the upper space of annulus and the bottom of cylinder-like structure.

7. use a method for the high-gradient magnetic circuit structure of arbitrary described filter of claim 1-6, it is characterized in that: the cyclic process of cooling insulating transformer oil is:

The first step, first flowed out through upper yoke plate two place oil discharge orifice by the deep fat in the oil ring space between magnet exciting coil and upper yoke plate, then its two-way converges to outer oil circuit (19);

Second step, outer oil circuit (19) is connected through the entrance (20) of the first valve (221) with external oil pump and oil water heat exchange device assembly, and in external oil pump and oil water heat exchange device assembly, complete the cooling procedure of oil;

3rd step, flows through the second valve (222) from outlet (21) cold oil out of external oil pump and oil water heat exchange device assembly, enters outer oil pipe (23);

4th step, from outer oil pipe (23) and a point two-way flow back to, one tunnel is through oil pipe (24) and the first import (25) returned on lower yoke plate, another road flows through oil pipe (26) and returns the second import (27) on lower yoke plate, and the linear position residing for two oilholes on upper yoke plate is perpendicular to the straight line residing for two oilholes on lower yoke plate;

5th step, the cold oil that two imports come to enter and mixed flow is carried out in oil ring space between magnet exciting coil and lower yoke plate from yoke plate bottom, then along between coiling inner core and coil, between multi-layer winding, between coil skin and magnetic conductive cylinder, the a large amount of heat energy produced when upwards ascension absorbing coil works simultaneously, until enter the oil ring space between magnet exciting coil and upper yoke plate;

5th step, the above-mentioned first step that circulates, to the 5th step, carries out the displacement of heat through iterative cycles process, the damage caused to prevent coil Yin Wendu too high.