CN201187484Y - Air-cooling type aluminum water permanent magnetism pump - Google Patents
Air-cooling type aluminum water permanent magnetism pump Download PDFInfo
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- CN201187484Y CN201187484Y CNU2008200798558U CN200820079855U CN201187484Y CN 201187484 Y CN201187484 Y CN 201187484Y CN U2008200798558 U CNU2008200798558 U CN U2008200798558U CN 200820079855 U CN200820079855 U CN 200820079855U CN 201187484 Y CN201187484 Y CN 201187484Y
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- permanent magnet
- pump housing
- closed conduit
- main shaft
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Abstract
The utility model discloses an air-cooled aluminum liquid permanent magnetism pump, which comprises an annular carborundum sealed pipeline installed inside a pump body and covered with an insulation thermal-protective coating made from a heat-resisting material; a main electric motor and a transmission device thereof are connected with a main shaft, a permanent-magnet fixed plate is connected with the main shaft, a permanent magnet is fixed on the permanent-magnet fixed plate through a pure iron yoke embedded on the permanent-magnet fixed plate, and is arranged on both the upper and the lower sides of the sealed pipeline or on either side thereof, or on the inner side of the sealed pipeline; an inlet orifice and an outlet orifice which are used for the sealed pipeline extending out of the pump body to be connected with the exterior are formed on a austenitic stainless steel pump body; a temperature sensor is arranged inside the pump body, a forced air-cooling system is arranged on the pump body, and a power distribution control system is connected with the main electric motor, the temperature sensor and a forced air-cooling system. The permanent magnetism pump has the significant advantages of high energy conservation, high efficiency, lower cost, no pollution, low maintenance cost, long service time and reliable operation.
Description
Technical field
The utility model relates to a kind of permanent magnet pump, especially provide use in a kind of non-ferrous metal aluminium manufacture field be applicable to the oriented mobile air-cooled type aluminium pad permanent magnet pump of control high temperature aluminum molten metal in pipeline and smelting furnace, holding furnace.
Background technique
At the non-ferrous metal manufacture field, in order to improve the quality that aluminum alloy belongs to, reduce scaling loss, in the process of melting, to add various alloying elements and make it to mix.At present existing multiple molten metal mixing plant, wherein the aluminium water pump is to generally acknowledge best stirring apparatus.It can make direction and the flow velocity motion of aluminium liquid by design, thereby makes the aluminum melt in the smelting furnace carry out fully, mix fast.
Known in the world aluminium water pump has two kinds of aluminium water power magnetic pumping, aluminium water mechanical pumps, and is wherein the most representative with Britain EMP electromagnetic pump and U.S.'s Metaullics mechanical pump.Their common feature is a high efficiency, can be fast, effectively, fully the aluminium liquid in the smelting furnace is stirred, reduce scaling loss, thereby a large amount of energy saving improves the quality that aluminum alloy belongs to.Per hour can make high temperature aluminum liquation capacity reach 300～1000 tons respectively from disclosed data aluminium water mechanical pump and aluminium water power magnetic pumping by the pump housing.But they also have a lot of shortcomings: aluminium water power magnetic pumping costs an arm and a leg, power consumption is more, the N circle multi-deck combined electromagnetic induction coil of its particular design need reduce temperature by liquid nitrogen or soft water circulating cooling system, the control system of electric apparatus is complicated, accessory takes up an area of big, easily pollute, application is seldom arranged at present at home.Aluminium water mechanical pump is a kind of stirring apparatus of contact-type; because the contact segment of it and high temperature aluminum liquation needs complicated protective system; easily aluminium liquid is polluted; the wheel rotor and the pump housing adopt SST level graphite material to be immersed in the aluminium liquid more; wear damage very easily; thereby its working life is short, and year maintenance cost is high, and many users afford with not rising.
The model utility content
The purpose of this utility model is to improve the deficiencies in the prior art, and a kind of high energy-conservation, high efficiency, low cost, free of contamination air-cooled type aluminium pad permanent magnet pump are provided.
The purpose of this utility model is achieved in that
The air-cooled type aluminium pad permanent magnet pump that the utility model provides comprises a ring silicon carbide closed conduit, a pump housing, a main shaft, a permanent magnet fixed plate, a Nd-Fe-B permanent magnet, a main motor and transmission device thereof and a forced air cooling device; Wherein:
Described closed conduit is installed in the described pump housing, its outer insulation layer that is provided with the heat-resistant material formation, and two ports of sealing pipeline stretch out outside the described pump housing; Fix described permanent magnet fixed plate on the described main shaft, on this fixed plate, inlay and set firmly the pure iron yoke, described Nd-Fe-B permanent magnet is fixed on the described fixed plate by described pure iron yoke and described Nd-Fe-B permanent magnet is distributed in described ring silicon carbide closed conduit both sides or a side wherein or its inboard up and down, described main motor connects described main shaft by transmission device, makes the described permanent magnet of described main motor driving make circular movement along described ring silicon carbide closed conduit; The described pump housing is that austenitic stainless steel material is made; Described forced air cooling device comprises blower fan, is arranged on the circulation air path in the pump housing, and the outlet of described blower fan connects the import of circulation air path, the outlet of described circulation air path is communicated with outward with the pump housing; In the described pump housing, be provided with temperature transducer.
Working principle of the present utility model is: under the driving of main motor, main shaft rotates, drive permanent magnet on it and do the rotation of circumferencial direction in described ring silicon carbide closed conduit outside, thereby generation Lorentz force, liquid aluminium liquid in described ring silicon carbide closed conduit is equivalent to rotor, the permanent magnet that moves is equivalent to stator, promotes aluminum melt flowing in annulus line thus;
Described permanent magnet is made up of some groups of Nd-Fe-B magnet steels, and it is fixed on the pure iron yoke of inlaying on the described permanent magnet fixed plate in groups.
During use, in conjunction with a power distribution control system, this power distribution control system is promptly controlled the angular velocity of rotation of described permanent magnet by for example Frequency Converter Control master motor speed, and then fluid pressure and flow rate of aluminium liquid in the ring silicon carbide closed conduit of control aluminium water permanent magnet pump; Simultaneously, be arranged on the temperature that temperature transducer in the pump housing is monitored the pump housing in real time, and control the work of described The forced air cooling, in time the permanent magnet of the pump housing and Qi Nei etc. is lowered the temperature by power distribution control system.Power distribution control system is a prior art, does not give unnecessary details so do not do at this.
This air-cooled type aluminium pad permanent magnet pump can also comprise an automatic protective system; accordingly; described Nd-Fe-B permanent magnet and fixed plate are distributed in described ring silicon carbide closed conduit inboard, this automatic protective system be a cover can with described main shaft and be attached thereto its on set firmly described permanent magnet the permanent magnet fixed plate draw-off mechanism outside the pump housing is proposed at least in part.It has a drive unit, is provided with the tractive driving mechanism between this drive unit and the described main shaft.This drive unit is connected with power distribution control system, is controlled by described temperature transducer.
When occurring temperature in the pump housing and cross high anomaly; automatic protective system promotes main motor and permanent magnet come out rapidly from the pump housing; when treating that described The forced air cooling drops to the suitable temperature of permanent magnet with the temperature in the pump housing; automatic protective system starts once more; main shaft and described permanent magnet are sent back in the pump housing, recover former working state.
Described ring silicon carbide closed conduit is specially designed, have one as liquid entering hole, another all can be used as two types of the two-way type closed conduits of liquid entering hole or liquid outlet as the one-way type of liquid outlet and two ports.
Adopt meticulous silicon carbide powder integral cast moulding or segmentation cast molding on the technology.
The pipeline of step pouring moulding, wherein, the port of every section carborundum tube has all designed seam, so that socket mutually leaves suitable matching gap at the socket stop portion, it is bonding wherein to be provided with high temperature resistant leak stopping sealing material sealing.
Design has protruding rib so that connect with austenite stainless stirrup reinforced company on the port outer wall face of ring silicon carbide closed conduit.
There is heat-resistant material to form insulating at silicon carbide pipeline peripheral hardware, can reduces the outside heat conduction velocity of aluminium liquid in the carborundum tube.
Permanent magnet pump is with the permanent magnet source that is used as power, and mainly is the magnetic field that utilizes it to produce in air gap.The size of Lorentz force mainly according to the design of permanent magnet magnetic circuit, be made up of permanent magnet, yoke and air gap by magnetic circuit, and the permanent magnetic circuit design divides two aspects, and the one, the performance of known permanent magnet, magnetic structure and magnetic circuit each several part size require to calculate air gap internal magnetic field intensity H
gThe 2nd, the magnetic property of known materials, working clearance and magnetic intensity require to calculate definite magnetic structure and magnet size.Known conditions: the specific conductance α of aluminium, the long-pending π r of pipeline section
2, duct length 2 π R, permanent magnet volume V
m, the permanent magnet length L
m, the effective air gap length L
g, air gap volume V
g, permanent magnet angular velocity omega, remanent magnetism B
r, magnetic intensity coercivity H
Cb, demagnetizing field intensity H
m, effective air gap internal magnetic field intensity H
g, maximum magnetic energy product B
mH
m, magnetomotive force H
mL
mDeng.Have by the magnetomotive force conservation principle and the principle of continuity of magnetic flux:
φ＝B
mA
m＝KfB
gA
g (1)
-H
mL
m＝K
rH
gL
g (2)
(1) (2) simultaneous solution gets
Wherein
φ ... magnetic flux
B
mThe Magnetic flux density of permanent magnet
B
gMagnetic flux density in the effective air gap
A
mThe sectional area of permanent magnet
A
gThe sectional area of effective air gap
K
fLeakage coefficient
K
rThe magnetomotive force loss coefficient
μ
0Permeability of vacuum
Because have the leakage field phenomenon in the magnetic circuit, then there is flux loss in the magnetic circuit each several part, and the magnetomotive force that is not equal to permanent magnet falls in the magnetic pressure of magnetic circuit.As air gap size and air gap magnetic intensity H
gKnown, then the emphasis of magnetic Circuit Design is exactly how to optimize K
fAnd K
r
The utility model is optimized leakage coefficient and magnetomotive force loss coefficient according to above-mentioned principle by the different modes that magnetic structure optimal design and yoke are inlayed, and reduces leakage field to greatest extent.
Have according to Faraday law of electromagnetic induction again:
E.................. electric current [strength
Because: J=α E
J ... induced current density
The Lorentz force that the permanent magnet magnetic induced action produces is: F=JB
Wherein J is vertical mutually with the B direction, and therefore, the electromagnetic force density that permanent magnet produces is:
F＝αB
2ωsinωt＝αEB
Main transmission gear for electric motor is a decelerator, is installed in pump housing top.By the Frequency Converter Control rotating speed of motor, make main shaft link to each other by shaft joint, and then make permanent magnet do the circumferencial direction rapid movement with the fixed plate of inlaying the pure iron yoke, and the angular velocity of rotation of control permanent magnet.
Calculate under the different angular velocity Lorentz force through science and can control the hydrodynamic pressure of aluminium water permanent magnet pump at the mean value of tangent direction, aluminum melt flow velocity etc.
In existing aluminium liquid agitating device, also do not use the precedent of permanent magnet pump.Its reason mainly is to form high-intensity air gaps magnetic field to promote aluminum liquid movement effectively.And the utility model promptly is provided with the permanent magnet fixed plate by special magnetic structure design, inlays the pure iron yoke thereon, sets firmly permanent magnet on the pure iron yoke, and this magnetic Circuit Design can reduce leakage field.
Described fixed plate can be that Austenitic Stainless Steel is made, and inlays the pure iron yoke piece on the fixed plate and becomes special magnetic structure, fixes some groups of permanent magnets on the pure iron yoke.
Described permanent magnet can be divided into some groups, and every group has some blocks of magnet steel again, is distributed in both sides up and down or a side or the inboard of ring silicon carbide closed conduit.Its this special design is to make permanent magnet do the circumferencial direction rapid movement and produce Lorentz force, and aluminium liquid is equivalent to rotor during work, and mobile permanent magnet is equivalent to stator, can promote aluminum melt thus and flow ducted.
Optimize permanent magnet as calculated and can be divided into 6～12 (even number) group, and the other adjacent two groups of Nd-Fe-B permanent magnet polarity of closed conduit are opposite, its even magnetic line of force direction is perpendicular to pipeline.
The special shape and structure of the pure iron yoke on the described fixed plate can be to be the radial supporting structure in the center of circle with the main shaft, this support can be preferably by separation structures such as circumference 3 five equilibriums, 4 five equilibriums or 6, the pure iron yoke of inlaying arrangement on each radial sub-stent sets firmly permanent magnet and is two groups up and down, add up to 6-12, and form flux circuit one to one by main shaft and opposite polarity end UNICOM.
The described pump housing is the support structure steelframe of austenitic stainless steel material, its outer fixedly austenite stainless steel plate that adheres to.The pump housing can be box-shaped or barrel shaped structure, and transom is set on the pump housing, and pump housing inside is provided with the circulation air path that produces circulating air flow and links to each other with this transom.The forced air cooling forces to be blown into guiding cool air in the pump housing by circulation air path to permanent magnet with blower fan, effectively takes away the heat on it, with the temperature of guaranteeing permanent magnet in normal range (NR).Described closed conduit can be furnished with flange plate from the tube opening of inlet opening that the pump housing passes and exit orifice and be connected with outside.
The Austenitic Stainless Steel pump housing permeability of box-shaped or barrel shaped structure is low, can not disturb the magnetic Circuit Design of pump housing inside, has guaranteed the stability in magnetic field; Circulation air path in the pump housing and transom cooperate air cooling system can fast and effeciently reduce the interior temperature of the pump housing.
Described temperature transducer can be mounted in the periphery of ring silicon carbide closed conduit in the pump housing, be used to monitor the air temperature of pump housing inside, air temperature setting value in the pump housing is that the Curie temperature according to permanent magnet calculates through science and sets, and effective operation point of permanent magnet is to change with its demagnetization curve.
The forced air cooling comprises blower fan, temperature transducer and connected control gear, this control gear makes high pressure positive blower start or stop according to the monitor data variation of temperature transducer feedback, air-flow enters along inner air channel generation circulating air flow from pump housing wind inlet and also dispels the heat with the reduction temperature by ventilative window, and the assurance permanent magnet is worked safely and reliably.
Draw-off mechanism as described automatic protective system can be to be included in to reach guide rail or the leading screw that the top is provided with in the pump housing; described main shaft or fixed plate can be connected along the direction of guide rail or leading screw on guide rail or the leading screw up or down by driving mechanism, and described driving mechanism connects driving mechanism.Described driving mechanism can be a servo electrical machinery system, accepts the control of PLC.When temperature anomaly in the pump housing raise warning, PLC control servo electrical machinery system promoted a segment distance with main motor and permanent magnet along guide rail or leading screw direction, and protection motor and permanent magnet are not subjected to high temperature injury in the pump housing.When temperature fell back to normal value, servo-system returned to former working position with main motor and permanent magnet.
The air-cooled type aluminium pad permanent magnet pump that the utility model provides is brand-new agitating and conveying apparatus, and it has the advantage of electromagnetic pump and mechanical pump concurrently, has overcome their shortcoming separately again.Air-cooled type aluminium pad permanent magnet pump has high energy-conservation, high efficiency, low cost, free of contamination distinguishing feature: aluminium water permanent magnet pump can be saved energy consumption more than 50% with respect to electromagnetic pump; Unique magnetic Circuit Design and air cooling system design have not only guaranteed the reliability of system, and have eliminated pollution; The loop design of big caliber can exchange jumbo aluminum melt in the unit time; Contactless alr mode has guaranteed that service life of equipment is long, and the Annual Operational Maintenance expense reduces significantly; Special structural design and Magnetic Field Design have effectively reduced the leakage magnetic field problem of large volume air gap, make air-cooled type aluminium pad permanent magnet pump can be efficiently, work reliably.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of structural representation of the air-cooled type aluminium pad permanent magnet pump that Fig. 1 provides for the utility model;
A kind of structural representation of the ring silicon carbide closed conduit of the air-cooled type aluminium pad permanent magnet pump that Fig. 2 provides for the utility model; It is the schematic representation of ring silicon carbide pipeline described in the utility model
Fig. 2 a is the fixing structure schematic representation of the port of every section carborundum tube of closed conduit shown in Figure 2;
The another kind of structural representation of the ring silicon carbide closed conduit of the air-cooled type aluminium pad permanent magnet pump that Fig. 3 provides for the utility model;
Another structural representation of the ring silicon carbide closed conduit of the air-cooled type aluminium pad permanent magnet pump that Fig. 4 provides for the utility model;
Fig. 4 a is the side-looking structural representation of Fig. 4;
Another structural representation of the ring silicon carbide closed conduit of the air-cooled type aluminium pad permanent magnet pump that Fig. 5 provides for the utility model;
Fig. 5 a is the side-looking structural representation of Fig. 5
The main TV structure schematic representation of the fixed plate that is connected with main shaft of the air-cooled type aluminium pad permanent magnet pump that 6a provides for the utility model;
Fig. 6 b, 6c and 6d are the plan structure schematic representation of the fixed plate of separation structures such as trisection, the quartering and six;
The master of a kind of box-structure of the pump housing of the air-cooled type aluminium pad permanent magnet pump that Fig. 7 provides for the utility model looks schematic representation
Fig. 7 a is the schematic top plan view of the pump housing shown in Figure 7;
The air-cooled type aluminium pad permanent magnet pump that Fig. 8 provides for the utility model the master of another kind of cylinder type structure of the pump housing look schematic representation
Fig. 8 a is the schematic top plan view of the pump housing shown in Figure 8;
Fig. 9 a is the structural representation of pipe connecting flange;
Fig. 9 b is the another kind of structural representation of pipe connecting flange;
The schematic representation of the another kind of structure of the air-cooled type aluminium pad permanent magnet pump that Figure 10 provides for the utility model;
The electrical distribution system circuit theory diagrams that Figure 11 provides for the utility model;
Figure 12 is that described aluminium water permanent magnet pump uses schematic representation.
Embodiment
Below in conjunction with accompanying drawing and example the utility model is described in further detail:
As shown in Figure 1, be the air-cooled type aluminium pad permanent magnet pump that the utility model provides, comprise ring silicon carbide closed conduit 1, be distributed in described ring silicon carbide closed conduit both sides about in the of 1 Nd-Fe-B permanent magnet 16, main motor 12 and transmission device thereof, be used for fixing permanent magnet fixed plate 8, the pump housing, The forced air cooling and the power distribution control system of inlaying pure iron yoke 6 of described Nd-Fe-B permanent magnet 16;
Ring silicon carbide closed conduit 1 is installed in the pump housing, and silicon carbide sealed pipe 1 is provided with the insulation layer 17 that heat-resistant material constitutes; Main motor 12 and transmission device thereof connect a main shaft 7 by shaft coupling 14, make it rotation, main shaft 7 inserts in the pump housing by the perforation 11 (as Fig. 7 a, 8a) that is provided with respect to annular seal pipeline 1 neutral position at the pump housing, the place of two positions up and down of the corresponding main shaft on the pump housing is provided with bearing 19 supports main shaft, sets firmly the fixed plate 8 of inlaying pure iron yoke 6 on the main shaft.Bearing support 18 is set on the lower shoe of the pump housing, main shaft 7 is rotatably mounted on the bearing support 18, make main shaft 7 place the centre of the annular space of annular seal pipeline 1 by bearing 19.Permanent magnet 16 calculates according to the science of magnetic circuit, is divided into some groups of (even number) correspondences on fixed plate, forms the magnetic line of force that runs through closed conduit.The magnetic line of force is made rapid movement along pipeline and has just been produced Lorentz force, and Lorentz force is taking into full account under the situation of various enviromental parameters and can science calculate.
Be fixed with the permanent magnet fixed plate 8 of inlaying pure iron yoke 6 on main shaft 7, Nd-Fe-B permanent magnet 16 is fixed on the permanent magnet fixed plate 8 by the pure iron yoke 6 that is embedded on the permanent magnet fixed plate 8.Shown in Fig. 1, Fig. 6 a, 6b, 6c, 6d, this fixed plate 8 is that to be fixed on the main shaft with the main shaft be the radial support in the center of circle, it can be 3,4 or 6 branch fixed rack structures that have 3 five equilibriums, 4 five equilibriums or 6 five equilibriums on circumference, each minute fixing frame the longitudinal profile shape shown in Fig. 6 a, be " ㄈ " shape frame, this frame comprises upper holder and lower fixed frame and center fixed frame.On the internal surface of minute fixing frame, set firmly pure iron yoke 6.Fix one group of permanent magnet 16 respectively on upper holder on each minute fixing frame and the lower fixed frame, have suitable air gap between two groups of permanent magnet opposed 16 up and down and polarity opposite.On this fixing frame each minute last permanent magnet 16 be positioned at closed conduit 1 above, under permanent magnet 16 be positioned at closed conduit 1 below (as Fig. 1).Form flux circuit one to one by main shaft 7 with permanent magnet 16 opposite polarity end UNICOMs, and annular seal pipeline 1 places magnetic field.Two groups of permanent magnet opposed 16 also can be arranged in the space in the middle of the annular seal pipeline 1 up and down, as shown in figure 10.
Inlaying the pure iron yoke by bisecting method on fixing frame, can reduce leakage field, is the specialized designs of flux circuit structure.
By said structure, by main motor driving, can make permanent magnet do the circumferencial direction rapid movement, and can control the angular velocity of rotation of permanent magnet easily.Then regulation and control promote the long-range navigation thatch power of aluminium liquid in the sealing pipeline.
In the prior art, the example that does not also use the aluminium water permanent magnetism pump housing to stir.This is because the magnetic Circuit Design complexity of permanent magnet, and the action of a magnetic field power is very little, and permanent magnet will occur the phenomenon of demagnetizing to the requirement height of ambient temperature in case surpass Curie temperature, and the magnetic intensity linear attenuation can't realize the purpose of aluminium liquid directional flow.But the utility model is made the closed conduit of ring by using silicon carbide, and designed the insulating of heat-resistant material, add that permanent magnet rationally is set is fixing on the fixed plate of inlaying the pure iron yoke, make the leakage field phenomenon in the magnetic circuit reduce, magnetic intensity significantly improves, a large amount of magnetic lines of force are concentrated and are passed closed conduit, by adjusting the angular velocity of rotation of permanent magnet, just can carry out effective directional push to the aluminium liquid in the closed conduit.
Ring silicon carbide closed conduit 1 can be unidirectional and two-way two types.Be illustrated in figure 2 as check configuration, one of them port adapter portion 3 is vertical substantially with closed conduit 1, the suitable liquid entering hole of doing of this port, and another port has straight-run of pipe and ring tube to become tangent relation substantially, help the outflow of aluminium liquid, be fit to do liquid outlet, the sealing pipeline constitutes an opening annulus; Fig. 3 is another kind of open circles ring type closed conduit, and aluminium liquid can two-way flow; Fig. 2 and Fig. 3 have provided the unidirectional and two-way two kind structures of closed conduit in same plane.Closed conduit shown in Fig. 4,4a is a bi-directional configuration, it constitutes an annulus in solid space, import and export the overlapping part of pipeline section, the flow direction of importing and exporting fluid is vertical relation basically, two ports are equipped with straight-run of pipe in the port and become tangent substantially relation, so can be made liquid entering hole and liquid outlet with the ring pipe.Shown in Fig. 5,5a also is a kind of bi-directional configuration, different with closed conduit shown in Figure 4 is, the former has only 3/4ths circumferential lengths by the ring pipeline section, and the ring pipeline section is essentially whole annulus length in this example, and the fluid flow direction of the straight length lap that the two-port place connects is opposite.The design of annular seal pipe shape can be so that pipeline be provided with in the effective coverage in the high-intensity magnetic field of the permanent magnet of rotation, the volume compact of the pump housing, and the performance of insulation is also relatively good.Select unidirectional or two-way silicon carbide pipeline mainly to require to decide according to user's smelting process.
Ring silicon carbide closed conduit 1 adopts the integrated poured moulding of silicon carbide powder or the step pouring moulding of the processing that becomes more meticulous, as Fig. 2,2a, closed conduit shown in Figure 3 is sectional forming, the port socket seam 5 of its design, suitable matching gap is arranged and fill high temperature resistant adhesive material to be sealed, the sheathed stainless stirrup of port external application 2 is fastening.Can establish fin establishing on the pipe outer wall of stainless stirrup, help being provided with stirrup.Ring silicon carbide closed conduit is installed in the neutral position of the pump housing, and managing as shown in Figure 1 has insulating 17 seal protections on the outer wall.
The described pump housing is the supporting structure steelframe that austenitic stainless steel material is made, austenite stainless steel plate is adhered in its outside to make the pump housing constitute box-shaped (to see that Figure 77 a) or barrel-shapedly (see a) structure of Figure 88, what Austenitic Stainless Steel did that the pump housing mainly considers is the influence of the permeability of different materials to magnetic field, also will consider the mechanical property of this material simultaneously; Being provided with two terminations that inlet opening 3a and exit orifice 4a be used for closed conduit 1 with 3,4 corresponding positions, gateway of closed conduit 1 on the pump housing stretches out the pump housing and is connected with outside; On the gateway, be equipped with flange plate 9 (as Fig. 9 a, 9b).Heat-resistant material layer 10 between flange plate 9 and closed conduit can prevent that the transmission of heat of aluminium liquid is too fast.
Temperature transducer is set in the pump housing, and The forced air cooling is arranged on the pump housing, and it comprises a high pressure positive blower 15, is arranged on the pump housing, and its exhaust outlet is connected on the blowing mouth of being located on the pump housing.Described power distribution control system connects main motor 12, temperature transducer and high pressure positive blower 15, and feasible The forced air cooling by temperature transducer control produces circulating air flow and dispels the heat by transom in the pump housing.The blast of blower fan can require to decide according to concrete pump heat radiation.
The power distribution control system of this permanent magnet pump as shown in Figure 9 by by for example frequency variator 23, main motor 12, is controlled high pressure positive blowers 15 by circuit breaker 24, A.C. contactor 25, thermorelay 26 as shown in figure 11.Permanent magnet pump as shown in Figure 1 also has such basic circuit that comprises main motor 12 and high pressure positive blower motor 15., rotate by main motor 12 control main shafts 7, and the rotating speed of frequency variator 23 regulation and control main shafts is controlled the angular velocity of rotation of described permanent magnet 16, and then fluid pressure and flow rate of aluminium liquid in the ring silicon carbide closed conduit of control aluminium water permanent magnet pump; Simultaneously, be arranged on the temperature that the interior temperature transducer of the pump housing is monitored the pump housing in real time, this temperature is controlled high pressure positive blower by temperature transducer, and passes through the work of the described The forced air cooling of high pressure positive blower 15 controls, in time to closed conduit and pump housing cooling.
This air-cooled type aluminium pad permanent magnet pump can also comprise an automatic protective system, is applied on the air-cooled type aluminium pad permanent magnet pump as shown in figure 10.It is a cover can with main shaft 7 and be attached thereto its on set firmly permanent magnet 16 permanent magnet fixed plate 8 draw-off mechanism outside the pump housings is proposed.Here, be fixed on the main shaft 7 permanent magnet fixed plate 8 with and on pure iron yoke 6 and the external diameter of permanent magnet all less than the diameter in the space, middle circle cross section of closed conduit 1, permanent magnet fixed plate and permanent magnet all place in the annulus of closed conduit 1.This main shaft 7 is for moving up and down and be rotatably mounted in the pump housing, and it is actuating motor 20 that this main shaft has a drive unit, is provided with tractive driving mechanism 21 between this drive unit 20 and the main shaft 7, for example is a screw type driving mechanism.The concrete structure of automatic protective system can be in the permanent magnet pump shown in Figure 10: be provided with a cylindrical shell of being made by Austenitic Stainless Steel; its annulus centre that is plugged in closed conduit 1 in the pump housing is provided with bearing support 18 in the bottom of this cylindrical shell, establishes bearing 19 on the main shaft and is connected on the lower shoe that makes main shaft 7 be rotatably mounted to cylindrical shell with bearing support 18 couplings.Be positioned at sheathed a plate above the permanent magnet fixed plate 8 of the topmost part on main shaft 7, described cylindrical shell and connecting plate connect firmly; When placing in the annulus of closed conduit in main shaft is plugged in the hole 11 of the pump housing, the lower shoe of cylindrical shell is supported on the pump housing bottom surface, and connecting plate covers the hole on the pump housing 11 simultaneously.Connect motor 12 by shaft coupling as illustrated in fig. 1 on the main shaft 7 on connecting plate.Establish perforation on connecting plate, wear at least three screw rods, the lower end of screw rod is rotatably mounted on the pump housing, attaching nut on screw rod, and it is fixed on this connecting plate, connects actuating motor 20 by driving mechanism on the screw rod.Actuating motor rotates, and can drive screw rod and rotate, just can be by nut so that connecting plate rises or falls, thereby with main shaft and on the permanent magnet proposition pump housing or put back in the pump housing.Can in the pump housing, position limit switch be set the position of corresponding barrel support, fall pump housing when bottom and make the actuating motor stall main shaft being put back to pump housing middle cylinder body by the trip switch.Corresponding position on the pump housing also can be provided with one and form switch, is raised out the upper position of the pump housing with the control main shaft.Described tractive driving mechanism can also be that other rotations are converted to straight-line mechanism.Thus, actuating motor rotates and can make the screw rod lifting, drive then main shaft move up and down with the permanent magnet fixed plate and on permanent magnet from the pump housing, pull out or put back in the pump housing.The electrical block diagram of this permanent magnet pump as shown in figure 11, increased the circuit (content among Figure 11 in the frame of broken lines) of actuating motor 20 such as actuating motor 20 (using in example as shown in figure 10) composition on permanent magnet pump basis shown in Figure 1, temperature transducer is by circuit breaker 24 control actuating motors 20.This drive unit is connected with power distribution control system, is controlled by described temperature transducer.This pulling equipment is one to be fixed on the guide rail or the leading screw 21 on pump housing top and to connect an actuating motor device 20 as shown in figure 10, and guide rail or leading screw 21 are connected with main motor 12 and main shaft 7.When occurring anomalies such as temperature overheating in the pump housing; actuating motor device 20 is activated; can make the main motor 12, main shaft 7 and the permanent magnet 16 that are connected with guide rail or leading screw 21 from the pump housing, promote one section rapidly; treat that described The forced air cooling is when cooling to the suitable temperature of permanent magnet in the pump housing; automatic protective system starts once more; main shaft and described permanent magnet are sent back in the pump housing, recover former working state.Like this, can guarantee that permanent magnet can not surpass Curie temperature at work and produce the demagnetization phenomenon.
Adopt meticulous silicon carbide powder integral cast moulding or segmentation cast molding on the ring silicon carbide closed conduit technology.
The pipeline of step pouring moulding, wherein, the port of every section carborundum tube has all designed seam, so that socket mutually leaves suitable matching gap at the socket stop portion, wherein is provided with high temperature resistant leak stopping sealing material sealing bonding (shown in Fig. 2 a).
Design has protruding rib so that strengthen connecting (see figure 2) with austenite stainless stirrup 2 on the port outer wall face of ring silicon carbide closed conduit.
There is heat-resistant material to form insulating at silicon carbide pipeline peripheral hardware, to reduce the outside heat conduction velocity of aluminium liquid in the carborundum tube.
Described permanent magnet can be divided into some groups, and every group has some blocks of magnet steel again, is distributed in both sides up and down (as Fig. 1) or inboard (as Figure 10) of ring silicon carbide closed conduit.Its this special design is to make permanent magnet do the circumferencial direction rapid movement and produce Lorentz force, and aluminium liquid is equivalent to rotor during work, and mobile permanent magnet is equivalent to stator, can promote aluminum melt thus and flow ducted.
In the work, main motor 12 transmission devices are connected with main shaft by coupling 14, and drag permanent magnet and make circular movement.High pressure positive blower 15 is blown into high pressure draught by the casing wind inlet, flows along the circulation air flue in the pump housing, by the transom quick heat radiating of casing,, can not produce along demagnetization curve point variation downwards under the equilibrium temperature environment with effective operation point of guaranteeing permanent magnet.Be provided with servo-systems 20 such as guide rail or leading screw 21 above in the pump housing, reaching, accept PLC control.When temperature anomaly raise warning, PLC control servo-system 20 promoted a segment distance with main motor 12 and permanent magnet 16 along guide rail or leading screw 21 directions, and protection motor 12 and permanent magnet 16 are not subjected to high temperature injury in the pump housing.When temperature fell back to normal value, servo-system 20 returned to the working position with main motor 12 and permanent magnet 16, and aluminium water permanent magnet pump works on.
Aluminium water permanent magnet pump structure is in use formed as shown in figure 12, as can be seen from Figure 12: the entry port of aluminium water permanent magnet pump is installed in aluminium flowing-out mouth 28 1 sides of smelting furnace 27, promote aluminium liquid and in the processing well 30 that feeds intake, form specific whirlpool fast, then through advancing aluminium mouth 29 Returning smelting stoves 27.Aluminium water permanent magnet pump can make the aluminium liquid in the smelting furnace carry out fully, mix fast.The aluminium liquid that can make per minute pass through 10 tons through the aluminium water permanent magnet pump of test 18KW produces the speed of 6～8 meters of per seconds, according to the difference of silicon carbide caliber, the scope that aluminium liquid flows can from 0.1 ton/assign to 15 tons/minute.Aluminium water permanent magnet pump apparent size radius is about 0.5～1m, and weight is about 3 tons, can use the occasion in the condition strictness.
Claims (10)
1. an air-cooled type aluminium pad permanent magnet pump is characterized in that: comprise a ring silicon carbide closed conduit, a pump housing, a main shaft, permanent magnet fixed plate, Nd-Fe-B permanent magnet, main motor and transmission device and forced air cooling device; Wherein:
Described closed conduit is installed in the described pump housing, and the sealing pipeline outer wall is provided with the insulation layer that heat-resistant material constitutes, and two ports of sealing pipeline stretch out outside the described pump housing; Fix described permanent magnet fixed plate on the described main shaft, on this fixed plate, inlay and set firmly the pure iron yoke, described Nd-Fe-B permanent magnet is fixed on the described fixed plate by described pure iron yoke and described Nd-Fe-B permanent magnet is distributed in described ring silicon carbide closed conduit both sides or a side wherein or its inboard up and down, described main motor connects described main shaft, makes the described permanent magnet of described main motor driving make circular movement along described ring silicon carbide closed conduit; The described pump housing is that austenitic stainless steel material is made; Described forced air cooling device comprises blower fan, is arranged on the circulation air path in the pump housing, and the outlet of described blower fan connects the import of circulation air path, the outlet of described circulation air path is communicated with outward with the pump housing; In the described pump housing, be provided with temperature transducer.
2. air-cooled type aluminium pad permanent magnet pump according to claim 1, it is characterized in that: described permanent magnet is made up of the some groups of Nd-Fe-B magnet steels that are fixed on the described permanent magnet fixed plate of inlaying the pure iron yoke, every group of described permanent magnet has some blocks of magnet steel again, is distributed in the both sides up and down or the inboard of ring silicon carbide closed conduit.
3. air-cooled type aluminium pad permanent magnet pump according to claim 1, it is characterized in that: the structure of the pure iron yoke on the described fixed plate is to be the radial supporting structure in the center of circle with described main shaft, this support is by separation structures such as circumference 3-6, inlays on it and arranges the pure iron yoke, sets firmly permanent magnet on the pure iron yoke; Described permanent magnet is divided into 6～12 even number set, and opposite in two groups of other adjacent Nd-Fe-B permanent magnet polarity of described closed conduit, and its even magnetic line of force direction is perpendicular to pipeline.
4. air-cooled type aluminium pad permanent magnet pump according to claim 3, it is characterized in that: on described main shaft, the longitudinal profile of the intrinsic pure iron yoke of inlaying is shaped as " ㄈ " shape frame on each sub-stent of radial support, and opening sets firmly the pure iron yoke outwardly on the internal surface of described minute fixing frame; The upper and lower frames on the pure iron yoke of each minute fixing frame and/or the inboard fixed permanent magnet of middle boxes, last permanent magnet magnet steel be positioned at relative closed conduit above or the top of ring packing pipeline intermediate hole, under the permanent magnet magnet steel be positioned at closed conduit below or the bottom of ring packing pipeline intermediate hole, has air gap between two groups of permanent magnets up and down and polarity is opposite, form flux circuit one to one by main shaft and permanent magnet opposite polarity end UNICOM, make described annular seal pipeline place magnetic field.
5. air-cooled type aluminium pad permanent magnet pump according to claim 1 is characterized in that: the described pump housing is by adhere to box-shaped or the barrel-shaped body that fixing austenite stainless steel plate constitutes outside interior Austenitic Stainless Steel frame support structure and its; Transom is set on it to be communicated with outward with the pump housing as the outlet of described circulation air path.
6. air-cooled type aluminium pad permanent magnet pump according to claim 1 is characterized in that: described ring silicon carbide closed conduit is meticulous silicon carbide powder integral cast moulding or segmentation cast molding; Perhaps,
Described ring silicon carbide closed conduit be one of two port as liquid entering hole, another one-way type as liquid outlet, or be the two-way type closed conduit that two ports all can be used as liquid entering hole or liquid outlet; Perhaps,
Described closed conduit constitutes an opening annulus; Perhaps,
Described closed conduit constitutes a circular volute, the i.e. structure of its liquid entering hole and the overlapping part of liquid outlet pipeline section or intersection.
7. air-cooled type aluminium pad permanent magnet pump according to claim 6, it is characterized in that: the described closed conduit of described step pouring moulding, wherein, the port of the connecting end of every section carborundum tube has the seam of coupling, so that socket mutually, leave matching gap at the socket stop portion, it is bonding wherein to be provided with high temperature resistant leak stopping sealing material sealing; The austenite stainless stirrup that the port peripheral hardware is fastening.
8. air-cooled type aluminium pad permanent magnet pump according to claim 7 is characterized in that: design has protruding rib on the port outer wall face of the connecting end of described every section carborundum tube, and sheathed stainless stirrup on this projection rib is to strengthen the connection between each described segmentation; Perhaps
Described closed conduit is provided with flange plate from liquid entering hole and the liquid outlet that the pump housing passes, in order to be connected with the outside.
9. air-cooled type aluminium pad permanent magnet pump according to claim 1; it is characterized in that: also comprise an automatic protective system; accordingly; described Nd-Fe-B permanent magnet and fixed plate are distributed in described ring silicon carbide closed conduit inboard; described automatic protective system be a cover can with described main shaft and be attached thereto its on set firmly described permanent magnet the permanent magnet fixed plate draw-off mechanism outside the pump housing is proposed at least in part; it connects a drive unit, is provided with driving mechanism between this drive unit and the described main shaft.
10. air-cooled type aluminium pad permanent magnet pump according to claim 9, it is characterized in that: the draw-off mechanism of described automatic protective system is guide rail or the leading screw that is provided with on the described pump housing, described main shaft or fixed plate can be connected on guide rail or the leading screw along the direction of guide rail or leading screw up or down by driving mechanism, and this driving mechanism connects this driving mechanism; Perhaps,
The structure of described automatic protective system is: be provided with a cylindrical shell of being made by Austenitic Stainless Steel; it is plugged in the middle of the annulus of described closed conduit in the described pump housing; bottom at this cylindrical shell is provided with bearing support, establishes bearing on the described main shaft and is connected on the lower shoe that makes main shaft be rotatably mounted to cylindrical shell with the bearing support coupling.Be positioned at sheathed a plate above the described permanent magnet fixed plate of the topmost part on described main shaft, described cylindrical shell and connecting plate connect firmly; In the time of in main shaft is plugged in the annulus that places closed conduit in the pump housing, the lower shoe of cylindrical shell is supported on the pump housing bottom surface, and this connecting plate places on the pump housing simultaneously.On this main shaft above connecting plate, connect motor; Establish perforation on connecting plate, wear at least three screw rods, the lower end of screw rod is rotatably mounted on the pump housing, attaching nut on screw rod, and it is fixed on this connecting plate, connects actuating motor by driving mechanism on the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798558U CN201187484Y (en) | 2008-04-10 | 2008-04-10 | Air-cooling type aluminum water permanent magnetism pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798558U CN201187484Y (en) | 2008-04-10 | 2008-04-10 | Air-cooling type aluminum water permanent magnetism pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187484Y true CN201187484Y (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200798558U Expired - Fee Related CN201187484Y (en) | 2008-04-10 | 2008-04-10 | Air-cooling type aluminum water permanent magnetism pump |
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| Country | Link |
|---|---|
| CN (1) | CN201187484Y (en) |
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2008
- 2008-04-10 CN CNU2008200798558U patent/CN201187484Y/en not_active Expired - Fee Related
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Granted publication date: 20090128 Termination date: 20120410 |