CN102055260A - Rotor structure for 12-pole permanent magnet submersible motor - Google Patents
Rotor structure for 12-pole permanent magnet submersible motor Download PDFInfo
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- CN102055260A CN102055260A CN200910071064XA CN200910071064A CN102055260A CN 102055260 A CN102055260 A CN 102055260A CN 200910071064X A CN200910071064X A CN 200910071064XA CN 200910071064 A CN200910071064 A CN 200910071064A CN 102055260 A CN102055260 A CN 102055260A
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Abstract
The invention provides a rotor structure for a 12-pole permanent magnet submersible motor. A plurality of rotor units are axially arranged on a rotor shaft; each unit is provided with a tubular magnetic yoke, magnetic steel and a magnetic pole formed by stacking stamped steel; the tubular magnetic yoke is in bond fixation to the surface of the rotor shaft; the 12 pieces of magnetic steel forming a rectangle are symmetrically distributed on the surface of the tubular magnetic yoke; magnetic poles are respectively arranged on the upper surfaces of the each piece of the magnetic steel; each of the magnetic poles is provided with an opened guide bar slots; copper magnetic-isolation end rings are arranged on both sides of each piece of the magnetic steel and both sides of each magnetic pole; the inner rim of each end ring is connected with lug bosses at both ends of the tubular magnetic yoke respectively; and the end rings are provided with 24 opened holes and guide bars, of which the positions correspond to one another, at equal intervals. The tubular magnetic yoke of the structure makes the rotor shaft actually become a composite shaft, so the torsional strength of the rotor shaft is enhanced. The copper end rings and the guide bars of the rotor structure form a mouse cage, so the permanent magnetic motor has a self-starting function and the rotor units have the integrity convenient for combination and use. The rotor structure for the 12-pole permanent magnet submersible motor has the outstanding advantages of rational structure and particular applicability to the 12-pole permanent magnet submersible motor.
Description
Technical field
The invention belongs to the permanent magnetism submersible electric machine with oil, particularly relate to a kind of rotor structure that is used for 12 utmost point permanent magnetism submersible electric machine with oils.
Background technology
In recent years, the single-screw (single screw) pump oil recovery technique is developed rapidly, this technology can remedy the deficiency of " machine of kowtowing ", be applicable to the oil well that sand content is big, viscosity is high, straight well, inclined shaft, horizontal well, middle shallow well, stripper well, outlying oil well, heavy oil wells, single-screw (single screw) pump has substituted " machine of kowtowing " equipment and centrifugal submersible electric pump gradually, becomes the preferred unit in such oil field.
At present, the single-screw (single screw) pump motor has two types, one type is the high speed submersible electric machine with oil that adopts gear reduction, another kind of type is the direct driving low-speed oil submersible motor of exempting from reductor, its motor speed is commonly about 500 rev/mins, and the low-speed oil submersible motor of therefore developing this range of speeds has become the focus of present stage.
According to the principle that rotating magnetic field rotating speed and magnetic pole of the stator logarithm are inversely proportional to, the stator and the corresponding higher slow-speed of revolution that then can realize motor of rotor magnetic pole logarithm.Obviously adopt its rotating speed of low-speed oil submersible motor of self-running 12 magnetic pole logarithms can satisfy the high efficiency requirement of single-screw (single screw) pump, the working method that directly drives single-screw (single screw) pump also helps simplified apparatus.
In the known technology, the utility model of notification number CN2541988 " self-starting permanent magnet formula synchronous motor " discloses following technical scheme, rotor core is formed by stacking by the multi-disc rotor punching, the periphery upper punch of rotor punching has a plurality of opening sliver grooves or the sliver groove of remaining silent, sliver be embedded in opening sliver groove or the sliver groove of remaining silent in, opening sliver groove or the inboard symmetry of the sliver groove of remaining silent have many to U font air every magnetic magnet steel groove, magnet steel is positioned at the bottom of U font air every magnetic magnet steel groove, the center of rotor punching has axis hole, and iron core sleeve is on axle.
Technique scheme discloses sliver groove and sliver, makes permanent-magnet synchronous electric motor have self-starting function.
The utility model of notification number CN2192975 " composite type permanent magnet machine rotor " discloses following technical scheme, a kind of composite type permanent magnet machine rotor, it is to connect the uniform circular plate type magnetic isolation plate that has cylindrical breach and radial opening groove at the length direction of axle with key, the uniform magnetic pole that is fan-like pattern substantially of fixed-circumference direction between each magnetic isolation plate, the spacing of magnetic pole equates with the open slot width of magnetic isolation plate, and the magnet steel that together support is pushed down with slot wedge constitutes the corresponding number annular respectively every magnetic cavity between magnetic pole, magnetic isolation plate, the axle three.Can be the space of nature in magnetic cavity, also can be to load non-magnet material.
Technique scheme is with the magnetic pole section of being divided into by the circular plate type magnetic isolation plate, it is the effective measure that overcomes the rotor leakage phenomenon, but the circular plate type magnetic isolation plate that is provided with is the only parts that bear magnet steel and magnetic pole total weight and rotate the centrifugal force that produces at interval, when embodiment is bipolar machine if intensity still can, the intensity that is covered with the circular plate type magnetic isolation plate of open slot when 12 magnetic pole logarithms may not be reliable.The staggered phenomenon of polarity of the magnetic field when the armature spindle torsional deflection, will take place in axle thin (about 30mm) and long (about the 5000mm) of especially existing submersible electric machine with oil, influences exerting oneself of motor greatly.
Summary of the invention
The present invention discloses a kind of rotor structure that is used for 12 utmost point permanent magnetism submersible electric machine with oils for the technical problem that solves the incompatible 12 magnetic pole logarithm submersible electric machine with oil rotors needs of the disclosed technical scheme of the utility model that notification number is CN2192975 " composite type permanent magnet machine rotor ".
The present invention takes following technical scheme for achieving the above object: this rotor structure is by armature spindle and rotor bearing, magnet steel, magnetic pole and sliver are formed, feature is, armature spindle is axially arranged with each rotor unit, described rotor unit is provided with tubular yoke, the magnetic pole of magnet steel and the superimposed formation of punching, tubular yoke is fixed in the armature spindle surface by key, the cross section is that 12 magnet steel of rectangle are symmetrically distributed in tubular yoke surfaces, each magnet steel upper surface is respectively equipped with magnetic pole, each magnetic pole is provided with opening sliver groove, the both sides end face of described each magnet steel and magnetic pole is provided with copper with its fluid-tight engagement every the magnetic end ring, each copper bead in the magnetic end ring engages with the boss at tubular yoke two ends respectively, described each copper is every magnetic end ring periphery corresponding 24 open pores in position that have been spacedly distributed, 12 wherein alternate open pores are corresponding with the opening sliver groove of each magnetic pole respectively, described both sides copper is respectively equipped with the sliver that two ends are end cap every corresponding 24 open pores in magnetic end ring position, 12 wherein alternate slivers respectively with the corresponding joint of opening sliver groove of each magnetic pole.
The present invention can also take following technical measures:
Described cross section is that the long limit of the magnet steel one side of rectangle engages with tubular yoke surfaces, and the long limit of magnet steel is a magnetic pole, and the magnetic pole that faces magnet steel mutually is opposite.
Described tubular yoke surfaces is symmetrically distributed with 12 magnet steel huggings.
Beneficial effect of the present invention and advantage are: the armature spindle surface key of this rotor structure is fixed with tubular yoke, makes armature spindle become composite shaft in fact, thereby has strengthened the torsional strength of armature spindle.The armature spindle torsional strength is particularly important in the rotor of 12 utmost point permanent magnetism submersible electric machine with oils, and it can guarantee each magnetic pole linearity in the axial direction, effectively avoids because of polarity of the magnetic field the reduction of exerting oneself of the staggered motor that causes taking place.The magnet steel of this rotor structure is supported by the tubular yoke of bottom surface, is pressed by magnetic pole above, and is therefore fixing reliable.The copper end ring of this rotor structure and sliver form mouse cage, not only make magneto have self-starting function, the globality that rotor unit is had be convenient to be used in combination.The outstanding advantage that the present invention has is rational in infrastructure, be specially adapted to 12 utmost point permanent magnetism submersible electric machine with oil rotors.
Description of drawings
Accompanying drawing 1 is a rotor unit example structure partial cutaway schematic of the present invention.
Accompanying drawing 2 is rotor example structure generalized sections of the present invention.
Number in the figure: 1 armature spindle, 2 tubular yokes, 2-1 boss, 3 magnet steel, 4 magnetic poles, 5 slivers, 5-1 end cap, 6 keys, 7 bronze medals be every the magnetic end ring, 8 rotor bearings, 9 rotor snares, 10 thrust rings.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
As shown in Figure 1, rotor unit is made of every magnetic end ring 7 and sliver 5 the superimposed magnetic pole that constitutes 4 of tubular yoke 2, magnet steel 3 and punching, copper.The tubular yoke 2 of steel is fixed in armature spindle 1 surface by key 6, and the cross section is that 12 magnet steel of rectangle are symmetrically distributed in tubular yoke 2 surfaces, and long limit, the inboard of each magnet steel engages with tubular yoke surfaces, and two long limits of magnet steel are magnetic pole, and the magnetic pole that faces magnet steel mutually is opposite.Each magnet steel 3 upper surface is respectively equipped with the magnetic pole 4 that is approximately trapezoidal, the outer side edges of each magnetic pole is provided with opening sliver groove, the both sides end face of each magnet steel 3 and magnetic pole 4 is provided with copper with its fluid-tight engagement every magnetic end ring 7, and each copper bead in magnetic end ring 7 engages with the boss 2-1 at tubular yoke 2 two ends respectively.Each copper is every magnetic end ring 7 peripheries corresponding 24 open pores in position that have been spacedly distributed, and 12 wherein alternate open pores are corresponding with the opening sliver groove of each magnetic pole respectively.Both sides copper is respectively equipped with the sliver 5 that end cap 5-1 was dashed or was welded as in the two ends riveting every corresponding 24 open pores in magnetic end ring 7 positions, 12 wherein alternate slivers respectively with the corresponding joint of opening sliver groove of each magnetic pole.
Among Fig. 1, tubular yoke 2 surfaces are symmetrically distributed with 12 magnet steel huggings, crouch and be loaded on the magnet steel hugging in magnet steel 3 bottoms.
As shown in Figure 2, rotor is formed by armature spindle 1, rotor bearing 8 with by each rotor unit shown in Figure 1 that key 6 is axially fixed at rotor bearing 8 both sides armature spindles, and the quantity of rotor unit is determined according to power of motor.
Among Fig. 2, the formation of each rotor unit is identical, they comprise tubular yoke 2, magnet steel 3, magnetic pole 4, sliver 5 and copper every magnetic end ring 7, and the copper that is positioned at each rotor unit combination two ends of rotor bearing 8 both sides has the thickness of increasing every magnetic end ring 7, so that improve the intensity of rotor unit combination.In addition, the magnet steel 3 of each rotor unit is made of two magnet steel butt joints.The rotor snare 9 of Fig. 2 rotor and thrust ring 10 adopt prior art.
Claims (3)
1. rotor structure that is used for 12 utmost point permanent magnetism submersible electric machine with oils, by armature spindle and rotor bearing, magnet steel, magnetic pole and sliver are formed, it is characterized in that:, armature spindle is axially arranged with each rotor unit, described rotor unit is provided with tubular yoke, the magnetic pole of magnet steel and the superimposed formation of punching, tubular yoke is fixed in the armature spindle surface by key, the cross section is that 12 magnet steel of rectangle are symmetrically distributed in tubular yoke surfaces, each magnet steel upper surface is respectively equipped with magnetic pole, each magnetic pole is provided with opening sliver groove, the both sides end face of described each magnet steel and magnetic pole is provided with copper with its fluid-tight engagement every the magnetic end ring, each copper bead in the magnetic end ring engages with the boss at tubular yoke two ends respectively, described each copper is every magnetic end ring periphery corresponding 24 open pores in position that have been spacedly distributed, 12 wherein alternate open pores are corresponding with the opening sliver groove of each magnetic pole respectively, described both sides copper is respectively equipped with the sliver that two ends are end cap every corresponding 24 open pores in magnetic end ring position, 12 wherein alternate slivers respectively with the corresponding joint of opening sliver groove of each magnetic pole.
2. rotor structure according to claim 1 is characterized in that: described cross section is that the long limit of the magnet steel one side of rectangle engages with tubular yoke surfaces, and the long limit of magnet steel is a magnetic pole, and the magnetic pole that faces magnet steel mutually is opposite.
3. rotor structure according to claim 1 is characterized in that: described tubular yoke surfaces is symmetrically distributed with 12 magnet steel huggings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910071064XA CN102055260A (en) | 2009-10-30 | 2009-10-30 | Rotor structure for 12-pole permanent magnet submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910071064XA CN102055260A (en) | 2009-10-30 | 2009-10-30 | Rotor structure for 12-pole permanent magnet submersible motor |
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| Publication Number | Publication Date |
|---|---|
| CN102055260A true CN102055260A (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910071064XA Pending CN102055260A (en) | 2009-10-30 | 2009-10-30 | Rotor structure for 12-pole permanent magnet submersible motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437698A (en) * | 2011-12-31 | 2012-05-02 | 天津荣亨集团股份有限公司 | Rotor structure of permanent-magnet submersible motor with starting squirrel cage |
-
2009
- 2009-10-30 CN CN200910071064XA patent/CN102055260A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437698A (en) * | 2011-12-31 | 2012-05-02 | 天津荣亨集团股份有限公司 | Rotor structure of permanent-magnet submersible motor with starting squirrel cage |
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Application publication date: 20110511 |