CN104753284A - Submersible permanent magnet synchronous motor - Google Patents
Submersible permanent magnet synchronous motor Download PDFInfo
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- CN104753284A CN104753284A CN201310739094.XA CN201310739094A CN104753284A CN 104753284 A CN104753284 A CN 104753284A CN 201310739094 A CN201310739094 A CN 201310739094A CN 104753284 A CN104753284 A CN 104753284A
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- magnet steel
- rotor
- motor
- assembly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
Abstract
A submersible permanent magnet synchronous motor comprises a motor casing. A stator and a rotor are correspondingly arranged in the motor casing. The two ends of the motor casing are sealed and are connected with other external devices through connecting devices so as to form an integrated casing assembly. The stator and the rotor are a stator assembly and a rotor assembly which are of a multi-section structure. The stator assembly is fixed on the casing assembly, and the rotor assembly is arranged in the stator assembly in a penetrating manner. Oil is injected into the casing assembly. According to the submersible permanent magnet synchronous motor of the invention, the integrated motor casing assembly is adopted, and the stator assembly and the rotor assembly of a multi-section structure respectively adopt a 12-slot stator and a 10-pole rotor, so that the electromagnetic scheme is optimized, and the operational reliability and performance of the motor are improved; with a hollow spindle adopted, oil circulation can be realized in the cabin body of the motor, and therefore, the problem of heat dissipation is solved; and low speed and large torque can be realized. The submersible permanent magnet synchronous motor is applicable to all kinds of conditions in which oil pumping is performed through an electric pump underground, and is especially applicable to environments in which screw pumps are adopted to pump oil.
Description
Technical field
The present invention relates to a kind of oily permagnetic synchronous motor of diving, belong to machinery manufacturing technology field.
Background technology
Current China and other oil producing countries of the world, oil field all widely uses submersible electric machine with oil to drive submersible electric pump to draw crude oil.Electric Submersible Pump System is the visual plant of field produces, its power source of traditional Electric Submersible Pump System mainly asynchronous motor, and existing oil extraction system exists following problem in oil recovery process matched therewith:
One be asynchronous motor band centrifugal pump supporting time, because motor speed is lower than synchronous speed, electric efficiency and power factor on the low side;
Two be asynchronous motor band screw pump supporting time, because motor speed is too high, be difficult to through decelerator, speed is dropped to screw pump user demand scope, even if there is the decelerator of use, also substantially increase cost for oil production, also reduce oil recovery efficiency simultaneously, and the life-span of direct influential system;
Three is that asynchronous motor adopts variable frequency control usually, and when the alternating current long-distance transmissions on ground is to down-hole, energy loss is serious, substantially reduces Electric Machine Control precision, thus also reduces system effectiveness.
Recently, oily permagnetic synchronous motor of diving energy-efficiently obtains application with it, and need usually to be placed in down-hole according to operation, the surrounding of equipment is the oil mixing with water liquid of high pressure.
The two ends coupling head of existing latent oily permagnetic synchronous motor does not generally have sealing; The stators and rotators of motor is generally single-unit structure, and this structure is when requiring power of motor large, and cost increases greatly, and because submersible electric machine with oil is slim-lined construction, therefore anufacturability also can reduce; Existing motor does not almost consider heat dissipation problem, when requiring motor by big current, because the heat produced at downhole electrical motor cannot shed in time, thus easily burns out motor.
Application number be 200910137764.4 patent discloses a kind of multi-section servo submersible motor, although this motor rotor and stator are also multi-section type structures, but electric machine casing is also more piece segmented, although this motor adopts the scheme of multi-section type to solve the problem improving power of motor grade to a certain extent by rotor and stator, the shell of multi-section type considerably increases manufacture and packaging technology difficulty and cost.In addition, the more important thing is that the shell of multi-section type result also in increases greatly to the requirement of motor seal, and the sealing of whole motor is deteriorated.In addition, the adjacent two joint armature spindles of this motor are connected by shaft coupling, and therefore the life-span of shaft coupling directly can affect reliability.
Application number be 201010614682.7 patent discloses a kind of low-speed direct-drive permanent magnet synchronous submersible motor, this motor is single-unit formula motor, this motor adopts rotor 14 pole, stator 18 groove scheme, solves low speed problem to a certain extent, but high pulling torque exports problem and fails to solve very well.The number of poles of this rotor and the groove number of stator all bigger than normal, manufacturing cost can be made greatly to increase, simultaneously from the angle of motor electromagnetic scheme be not prioritization scheme yet.Further, down-hole sealing problem and motor radiating problem is not considered.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, a kind of oily permagnetic synchronous motor of diving is provided, adopt the motor shell component of integral structure, the stator assembly of multi-section type structure and rotor assembly, by adopting the setting of 10 pole rotors, 12 groove stators, optimize electromagnetic scheme, thus improve operational reliability and motor performance; Hollow spindle makes can realize oil circulation in motor room body, thus solves heat dissipation problem; Can low-speed big be realized, be applicable to the operating mode pumped by electric pump in various down-hole.
Technical problem to be solved of the present invention is achieved by the following technical solution:
A kind of oily permagnetic synchronous motor of diving, comprise electric machine casing, in electric machine casing, correspondence is provided with stators and rotators, and the two ends of described electric machine casing are sealed respectively and are connected with other external device (ED)s by coupling arrangement, are integrally formed the housing unit of formula structure; Described stators and rotators is respectively stator assembly and the rotor assembly of multi-section type structure, described stator assembly is fixed on housing unit, described rotor assembly is located in stator assembly inside, compresses location between described stator assembly and rotor assembly; Fluid is injected in housing unit.
Described housing unit comprises housing and is separately positioned on output coupling head and the coupling head of afterbody end at housing two ends, and described output connecting head is connected by thrust bearing with between housing; Described output coupling head be used for diving with this protector of oily permagnetic synchronous motor outside, pump is connected, accesses oil-submersible cable, and to enclosure interior oiling; Described afterbody end coupling head for installing encoder, and is connected with the sealing device of outside and controller.
Described stator assembly comprises multiple single-unit iron core, press-fit by internode the composition multi-section type stator core that is connected with each other between two adjacent single-unit iron cores, respectively set gradually hold-down ring and jump ring by center to both sides at the two ends of described multi-section type stator core, multi-section type stator core is compressed location.
Described rotor assembly comprises the magnet steel assembly be set on rotor main shaft, and the two ends of rotor main shaft are respectively equipped with rotor output axle sleeve and rotor afterbody end axle sleeve; Described magnet steel assembly is multi-section type structure, and being connected to each other by floating bearing by multiple single magnet steel group is formed, and each single magnet steel group is evenly arranged in by 10 magnet steel and circumferentially forms.
In 10 magnet steel of described single magnet steel group, comprise 8 standard magnet steel and 2 keyway magnet steel; The two ends of described standard magnet steel and keyway magnet steel are provided with step respectively in the axial direction, and the step on multiple standard magnet steel and keyway magnet steel is combined into cannelure, and the cannelure between adjacent two single magnet steel groups arranges radial compaction ring; The two ends of described single magnet steel group, are also provided with axial compression ring.
Described output coupling head comprises body, and one end of described body is provided with gas thread, and for being connected with described housing, the middle part of body is provided with oil filler point, and the other end of body is provided with the screwed hole combination for connecting;
The inside of described body is provided with and connects screwed hole, delivery outlet, bearing mounting hole, pin connection holes, axially extending bore, curve slope, cable interface, groove, gas thread, axial oil-through hole and radial oil filler point; Described connection screwed hole is evenly distributed on output circumference of flange; Output motor main shaft output is provided with in described delivery outlet; Thrust bearing installs location in described bearing mounting hole; The thrust collar of described thrust bearing is fixing in described pin connection holes; Motor output shaft is located in described axially extending bore; Input cable enters housing by described cable interface through curve slope; O RunddichtringO is provided with in groove; Described housing is tightly connected by gas thread and output coupling head; Fluid is transported to motor internal by radial oil filler point and enters axial oil-through hole.
Described single-unit iron core comprises silicon steel sheet, and described silicon steel sheet is provided with stator slot, arc groove, coiling fluting and housing connection slot, forms the open flume type stator core construction of 12 grooves; Winding coil is arranged on stator slot, and cable is through arc groove, and silicon steel sheet is connected with stator core and housing by housing connection slot.
Described rotor main shaft is slim-lined construction, comprises output, interlude and afterbody end; Described output is splined shaft; Described interlude is hollow shaft, and radial direction is evenly distributed with multiple oil-through hole, is also provided with the elongated key grooves for assemble rotor assembly; Described afterbody end is hollow shaft; Described output is provided with spline, consent, groove, radial oil-through hole and hollow axis hole, the spline joint of described spline and motor output shaft; Installed thrust bearing in groove; Described interlude is provided with radial oil-through hole and hollow axis hole; Described afterbody end is provided with radial oil-through hole, hollow axis hole and encoder installing hole.
Described keyway magnet steel is circular arc sheet structure, comprise outer surface and the inner surface of arc, in the both sides of the edge of outer surface, prolong its axial direction and be respectively equipped with step surface, at a lateral edges of inner surface, prolong its radial direction and be provided with keyway for making magnet steel circumferentially locate.
In sum, the invention provides a kind of oily permagnetic synchronous motor of diving, adopt the motor shell component of integral structure, the stator assembly of multi-section type structure and rotor assembly, by adopting the setting of 10 pole rotors, 12 groove stators, optimizing electromagnetic scheme, thus improve motor performance; Rotor main shaft is hollow shaft, by the mode to oiling in the body of motor internal cabin, realizes the oil circulation in motor room body, thus solves heat dissipation problem; This oily permagnetic synchronous motor of diving adopts the design of assembly mould blocking, improves packaging technology, and structure is simple and can flexible design as required; In addition, latent oily permagnetic synchronous motor of the present invention can realize low-speed big, and therefore down-hole drives the reliable for effect stable of pump, be applicable to all in down-hole by the scope that electric pump is pumped, be specially adapted to screw pump oil pumping occasion.
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is one of latent oily permagnetic synchronous motor overall structure figure of the present invention;
Fig. 2 is latent oily permagnetic synchronous motor overall structure figure bis-of the present invention;
Fig. 3 a is the enlarged drawing of latent oily permagnetic synchronous motor output in Fig. 1;
Fig. 3 b is the enlarged drawing of latent oily permanent magnet synchronous electric drive end unit end in Fig. 2;
Fig. 4 is the overall explosive view of latent oily permagnetic synchronous motor in the present invention;
Fig. 5 is the composition structural blast figure of Fig. 4 middle shell assembly;
Fig. 6 a is one of structure chart of output coupling head in Fig. 5;
Fig. 6 b is the structure chart two of output coupling head in Fig. 5;
Fig. 7 is the cutaway view of output coupling head in Fig. 5;
Fig. 8 is the structural representation of afterbody end coupling head in Fig. 5;
Fig. 9 is the cutaway view of afterbody end coupling head in Fig. 5;
Figure 10 is the composition explosive view of stator assembly in Fig. 4;
Figure 11 is the single-unit core structure schematic diagram of stator in Figure 10;
Figure 12 is the silicon steel structure figure of stator core in Figure 11;
Figure 13 is the structural blast figure of Fig. 4 rotor assembly;
Figure 14 is the primary structure schematic diagram of Figure 13 rotor;
Figure 15 is the partial enlarged drawing of Figure 14 rotor;
Figure 16 is the composition explosive view of Figure 13 rotor output axle sleeve;
Figure 17 is the overall structure figure of output axle sleeve in Figure 16;
Figure 18 is the cutaway view of output axle sleeve in Figure 16;
Figure 19 is the composition explosive view of Figure 13 rotor afterbody end axle sleeve;
Figure 20 is the overall structure figure of afterbody end axle sleeve in Figure 19;
Figure 21 is the cutaway view of afterbody end axle sleeve in Figure 19;
Figure 22 is one of structure chart of Figure 13 rotor main shaft;
Figure 23 is the structure chart two of Figure 13 rotor main shaft;
Figure 24 a is the output enlarged drawing of Figure 22 rotor main shaft;
Figure 24 b is the afterbody end enlarged drawing of Figure 23 rotor main shaft;
Figure 24 c is the interlude enlarged drawing of Figure 22 rotor main shaft;
Figure 25 is the cutaway view of Figure 13 rotor main shaft;
Figure 26 a is the output enlarged drawing of Figure 25 rotor main shaft;
Figure 26 b is the afterbody end enlarged drawing of Figure 25 rotor main shaft;
Figure 26 c is the interlude enlarged drawing of Figure 25 rotor main shaft;
Figure 27 is the structural blast figure of Figure 13 rotor magnet steel assembly;
Figure 28 is the structural representation of Figure 27 rotor standard magnet steel;
Figure 29 is the end view drawing of Figure 27 rotor standard magnet steel;
Figure 30 is the cutaway view of Figure 27 rotor standard magnet steel;
Figure 31 is the structural representation of Figure 27 rotor keyway magnet steel;
Figure 32 is the end view drawing of Figure 27 rotor keyway magnet steel;
Figure 33 is Figure 27 rotor single magnet steel group layout viewing;
Figure 34 is main shaft, stators and rotators assembly relation schematic diagram.
Embodiment
Fig. 1 is one of overall structure schematic diagram of latent oily permagnetic synchronous motor of the present invention.Fig. 2 is the overall structure schematic diagram two of latent oily permagnetic synchronous motor of the present invention.Fig. 3 a is the enlarged drawing of latent oily permagnetic synchronous motor output in Fig. 1, and Fig. 3 b is the enlarged drawing of latent oily permanent magnet synchronous electric drive end unit end in Fig. 2.Fig. 3 a, Fig. 3 b respectively illustrate the two ends of latent oily permagnetic synchronous motor.As shown in Fig. 1 to Fig. 3 b, the invention provides a kind of oily permagnetic synchronous motor 1000 of diving, this oily permagnetic synchronous motor of diving is modular design, and its two ends are respectively equipped with coupling arrangement, and one end is output coupling head, are conveniently connected with protector, pump etc.; The other end is the coupling head of afterbody end, is conveniently connected with encoder, sealing device, controller etc.
Latent oily permagnetic synchronous motor in the present invention is housing is integral type, and stators and rotators is respectively the new structure of multi-section type, and rotor main shaft is hollow shaft, can realize oil circulation in motor room body, and electromagnetic scheme adopts rotor 10 pole, stator 12 groove scheme.
Latent oily permagnetic synchronous motor in the present invention improves process program, thus improves reliability; Optimize electromagnetic scheme, thus improve motor performance; Devise oil circulation structure, thus solve heat dissipation problem.
Latent oily permagnetic synchronous motor of the present invention can realize low-speed big, and therefore down-hole drives the reliable for effect stable of pump, be applicable to all in down-hole by the scope that electric pump is pumped, be specially adapted to screw pump oil pumping occasion.
Fig. 4 is the overall explosive view of latent oily permagnetic synchronous motor of the present invention.As shown in Figure 4, oily permagnetic synchronous motor of diving is made up of housing unit 100, stator assembly 200, rotor assembly 300.
Fig. 5 is the composition structural blast figure of Fig. 4 middle shell assembly 100.As shown in Figure 5, housing unit 100 is made up of output coupling head 110, thrust bearing 120, housing 130, afterbody end coupling head 140.Output coupling head 110, for being connected with the mechanical part such as protector, pump, accesses oil-submersible cable, and to motor internal oiling; Thrust bearing 120 is for bearing the axial force suffered by motor; Afterbody end coupling head 140, for installing encoder, connects sealing device and controller.
Fig. 6 a is one of structure chart of output coupling head 110 in Fig. 5, and Fig. 6 b is the structure chart two of output coupling head 110 in Fig. 5.Fig. 6 a, Fig. 6 b respectively illustrate the two ends of output coupling head 110.As shown in Figure 6 a, one end of output coupling head 110 is provided with gas thread 111, is conveniently connected with electric machine casing 130; Be provided with oil filler point 112 at the middle part of output coupling head 110 again, be convenient to motor internal oiling, and fluid play motor internal thermolysis by circulation.As shown in Figure 6 b, the other end of output coupling head 110 is provided with screwed hole combination, is conveniently connected with the external component such as protector, pump, is provided with curve slope 113 and cable input interface 114 simultaneously, oil-submersible cable can be accessed motor internal.
Fig. 7 is the cutaway view of output coupling head 110 in Fig. 5.As shown in Figure 7, output coupling head 110 is made up of connection screwed hole 115, delivery outlet 116, bearing mounting hole 117, pin connection holes 118, axially extending bore 119, curve slope 113, cable interface 114, groove 109, gas thread 111, axial oil-through hole 108, radial oil filler point 112.Connect screwed hole 115 and be evenly distributed on output circumference of flange, for the external component such as connection protector, pump; Delivery outlet 116, for output motor main shaft output, provides space in hole for ease of installing bearing etc.; Bearing mounting hole 117 is for location and installation thrust bearing 120; Pin connection holes 118 is for the thrust collar of fixing thrust bearing 120; Axially extending bore 119 is for passing motor output shaft; Curve slope 113 is for reserving angular region for input cable enters cable interface; Cable interface 114 is for accessing oil-submersible cable; Groove 109, for mounting O-shaped sealing ring, plays sealing function; Gas thread 111 seals for being connected with electric machine casing 130; Axial oil-through hole 108 is motor oil circuit, and the fluid for being entered by oil filler point 112 is transported to motor internal cabin body; Radial oil filler point 112 is motor pouring orifice, for the body oiling of motor internal cabin.
Fig. 8 is the structural representation of afterbody end coupling head 140 in Fig. 5, and as shown in Figure 8, one end of afterbody end coupling head 140 is provided with screwed hole combination, convenient installation encoder or connection control device; The other end of afterbody end coupling head 140 is provided with gas thread, is conveniently connected with electric machine casing 130.
Fig. 9 is the cutaway view of afterbody end coupling head 140 in Fig. 5.As shown in Figure 9, afterbody end coupling head 140 is made up of conical bore 141, gas thread 142, groove 143, screwed hole combination 144, tail hole 145.Conical bore 141 is for reserving out space of lines; Gas thread 142 seals for being connected with electric machine casing 130; Groove 3 plays sealing function for mounting O-shaped sealing ring; Screwed hole combination 144 is for installing encoder connection shell; Tail hole 145 is for passing and stretching out electric machine main shaft afterbody end.
Its stator of latent oily permagnetic synchronous motor in the present invention is multi-section type structure, is first superposed in order by silicon steel sheet and forms single-unit iron core, then synthesizes multi-section type iron core group zoarium by several single-unit iron core Connecting groups, forms multi-section type stator finally by coil windings.Wherein, silicon steel sheet is 12 the groove structures being provided with coiling fluting, forms 12 groove schemes of latent oily permanent-magnetic synchronous motor stator of the present invention.
Figure 10 is the composition explosive view of stator assembly 200 in Fig. 4.As shown in Figure 10, the stator assembly 200 of oily permagnetic synchronous motor of diving press-fits 204 and 206 by jump ring 201 and 209, hold-down ring 202 and 208, single-unit iron core 203 and 207, internode, iron core group zoarium 205 forms, and forms multi-section type stator.Jump ring 201 and 209, for clamping stator core, prevents axial endplay; Hold-down ring 202 and 208 is fit for clamping more piece iron core group; Single-unit iron core 203 and 207 is for forming multi-section type stator core; Internode press-fits 204 and 206 between two single-unit iron cores, the floating bearing of protection the inside.
Figure 11 is the structural representation of stator single-unit iron core 203,207 in Figure 10, and Figure 12 is the silicon steel structure figure of stator single-unit iron core in Figure 11.As shown in figure 12, the silicon steel sheet of stator single-unit iron core 203 is made up of stator slot 2031, arc groove 2032, coiling fluting 2033, housing connection slot 2034, forms open flume type stator core, 12 groove structures.Stator slot 2031 is for installing winding coil, and its number is decided by electromagnetic scheme; Arc groove 2032 is for passing cable; Coiling fluting 2033 regulates for electromagnetic scheme and facilitates wire winding; Housing connection slot 2034 is for passing through keyway connecting stator iron core and electric machine casing.
Its rotor of latent oily permagnetic synchronous motor in the present invention is multi-section type structure, and the output and afterbody end of rotor are respectively equipped with output axle sleeve and afterbody end axle sleeve, for sealing.In interlude, be first evenly arranged in circumference by 10 magnet steel, form single magnet steel group, then, several single magnet steel groups axially connect and compose single magnet steel assembly, finally, are connected for rotor magnetic steel body between each single magnet steel assembly by floating bearing.Wherein, single 10 magnet steel form in the present invention the rotor 10 pole scheme of oily permagnetic synchronous motor of diving.In addition, rotor main shaft is hollow shaft structure, and is evenly provided with radial oil-through hole, and hollow axis hole can flow through fluid and circulates, and plays motor internal thermolysis.
Figure 13 is the structural blast figure of Fig. 4 rotor assembly 300.As shown in figure 13, the rotor assembly 300 of latent oily permagnetic synchronous motor is made up of rotor output axle sleeve 301, magnet steel assembly 302, rotor main shaft 303, rotor afterbody end axle sleeve 304.
Figure 14 is the primary structure schematic diagram of Figure 13 rotor, and Figure 15 is the partial enlarged drawing of Figure 14 rotor primary structure.As shown in figure 14, latent oily permanent magnet synchronous motor rotor magnetic steel part of the present invention is multi-section type structure.As shown in figure 15, in single magnet steel combination, magnet steel distribution by arranging formula magnet steel group around forming more.
Figure 16 is the composition explosive view of Figure 13 rotor output axle sleeve.As shown in figure 16, rotor output axle sleeve is made up of output axle sleeve 3011, insulating sleeve 3012, jump ring 3013 and 3015, guard ring 3014, axle sleeve 3016, axle sleeve 3017.Output axle sleeve 3011 is for sealing; Insulating sleeve 3012 is for insulating with motor stator winding outlet; Jump ring 3013 and 3015 is respectively used to prevent insulating sleeve 3012 and guard ring 3014 axial endplay; Guard ring 3014 material is glass stringing, for the protection of output axle sleeve 3011; Axle sleeve 3016 is for coordinating with motor output shaft and output axle sleeve 3011; Axle sleeve 3017 is for axial location.
The cutaway view of Figure 17 to be the overall structure figure of output axle sleeve 3011 in Figure 16, Figure 18 be output axle sleeve 3011 in Figure 16.As shown in figure 18, output axle sleeve 3011 is made up of delivery outlet 3011-1, oil-through hole 3011-2, interstitial hole 3011-3, macropore 3011-4, groove 3011-5 and 3011-6.Delivery outlet 3011-1 is used for coordinating with motor output end axle; Oil-through hole 3011-2 is for forming dynamo oil inner loop oil circuit; Interstitial hole 3011-3 and macropore 3011-4 is used for through motor output shaft, and passes through fluid; Groove 3011-5 and 3011-6 is used for installation shaft to location jump ring.
Figure 19 is the composition explosive view of Figure 13 rotor afterbody end axle sleeve 304.As shown in figure 19, rotor afterbody end axle sleeve is made up of jump ring 3041 and 3043, guard ring 3042, axle sleeve 3044, insulating sleeve 3045, afterbody end axle sleeve 3046, axle sleeve 3047.Jump ring 3041 and 3043 is respectively used to prevent insulating sleeve 3045 and guard ring 3042 axial endplay; Guard ring 3042 is for the protection of afterbody end axle sleeve; Axle sleeve 3044 is for coordinating with motor output shaft and output axle sleeve 3011; Insulating sleeve 3045 is for insulating with motor stator winding outlet; Afterbody end axle sleeve 3046 is for sealing; Axle sleeve 3047 is for axial location.
The cutaway view of Figure 20 to be the overall structure figure of afterbody end axle sleeve 3046 in Figure 19, Figure 21 be afterbody end axle sleeve 3046 in Figure 19.As shown in figure 21, afterbody end axle sleeve is made up of delivery outlet 3046-1, oil-through hole 3046-2 and 3046-4, interstitial hole 3046-3, excessively hole 3046-5, macropore 3046-6, groove 3046-7 and 3046-8.Delivery outlet 3046-1 is used for output motor afterbody end hollow shaft; Oil-through hole 3046-2,3046-4 are for forming dynamo oil inner loop oil circuit; Interstitial hole 3046-3 is used for coordinating with motor afterbody end axle; Excessive hole 3046-5 is used for leaving gap between motor afterbody end axle and afterbody end axle sleeve 304; Macropore 6 is for coordinating with axle sleeve 3046-4; Groove 3046-7 and 3046-8 is used for installation shaft to location jump ring.
Figure 22 is one of structure chart of Figure 13 rotor main shaft 303, and Figure 23 is the structure chart two of Figure 13 rotor main shaft 303.As shown in Figure 22 and Figure 23, rotor main shaft 303 is generally in slim-lined construction.
Figure 24 a is the output enlarged drawing of Figure 22 rotor main shaft 303, and Figure 24 b is the afterbody end enlarged drawing of Figure 23 rotor main shaft 303, and Figure 24 c is the interlude enlarged drawing of Figure 22 rotor main shaft 303.As shown in fig. 24 a, the output of rotor main shaft 303 is splined shaft; As shown in Figure 24 b, the afterbody end of rotor main shaft 303 is hollow shaft; As shown in Figure 24 c, rotor main shaft 303 is respectively equipped with and installs aperture for crossing fluid, elongated key grooves is used for rotor assembling.
Figure 25 is the cutaway view of Figure 13 rotor main shaft 303.As shown in figure 25, rotor main shaft 303 is hollow shaft, main shaft diameter to being evenly distributed with oil-through hole, for forming motor internal oil circulation.
Figure 26 a is the output enlarged drawing of Figure 25 rotor main shaft 303.As shown in Figure 26 a, rotor main shaft output is made up of spline 3031, consent 3032, groove 3033, radial oil-through hole 3034, hollow axis hole 3035.Spline 3031 is for the spline joint of motor output shaft; Consent 3032 enters hollow shaft for preventing impurity; Groove 3033 is for installed thrust bearing 120; Radial oil-through hole 3034 is for forming motor internal oil circulation; Hollow axis hole 3035 is motor internal oil circuit, plays thermolysis for forming motor internal oil circulation.
Figure 26 b is the afterbody end enlarged drawing of Figure 25 rotor main shaft 303.As illustrated in figure 26b, rotor main shaft 303 afterbody end is by radial oil-through hole 3036, hollow axis hole 3037, encoder installing hole 3038 and 3039.Radial oil-through hole 3036 is for forming motor internal oil circulation; Hollow axis hole 3037 forms motor internal oil circulation for injecting dynamo oil; Encoder installing hole 3038 and 3039 is for installing encoder.
Figure 26 c is the interlude enlarged drawing of Figure 25 rotor main shaft 303.As shown in Figure 26 c, rotor main shaft 303 interlude comprises radial oil-through hole 30310 and 30312, hollow axis hole 30311, jointly for inner oil circulation, rotor main shaft 303 is dispelled the heat.
Figure 27 is the structural blast figure of Figure 13 rotor magnet steel assembly 302.As shown in figure 27, rotor magnetic steel assembly 302 is made up of jump ring 3021, end copper ring 3022,3027,30211 and 30216, axial compression ring 3023 and 30215, single magnet steel group 3024 and 30214, radial compaction ring 3025 and 30213, single-unit magnet steel 3026, gasket seal 3028 and 30210, floating bearing 3029, more piece magnet steel combination 30212, back-up ring 30217.Wherein, jump ring 3021, end copper ring 3022 and 30216, axial compression ring 3023 and 30215 belong to rotor tip assembly; Single magnet steel group 3024 and 30214, radial compaction ring 3025 and 30213, single-unit magnet steel 3026 belong to single magnetic steel component; End copper ring 3027 and 30211, gasket seal 3028 and 30210, floating bearing 3029 belong to internode assembly.Jump ring 3021 is for preventing the axial endplay of rotor assembling; End copper ring 3022,3027,30211 and 30216 is for fixing magnet steel assembly 302 and Magnetic isolation; Axial compression ring 3023 and 30215 is for axial grip magnet steel assembly 302; Single magnet steel group 3024 and 30214 for forming single-unit magnet steel, thus forms the combination of more piece magnet steel further; Radial compaction ring 3025 with 30213 for being fixed the two circumference magnet steel that are connected; Single-unit magnet steel 3026 is for forming the combination of more piece magnet steel; Gasket seal 3028 and 30210 is for sealing; Floating bearing 3029 is for each single-unit of support rotor; Back-up ring 30217 is for clamping whole rotor assembling.
On the mounting means of the rotor magnetic steel of latent oily permagnetic synchronous motor of the present invention, in single magnet steel group circumferentially, devise two keyway magnet steel, thus prevent magnet steel at play circumferentially; Devising ledge structure in the axial direction by the two ends of each magnet steel again, by installing the cannelure that radial compaction ring is formed at magnet steel step between adjacent two single magnet steel groups, thus preventing magnet steel coming off diametrically; At the two ends of every single magnet steel assembly, be provided with again axial compression ring, thus prevent magnet steel play in the axial direction; In addition, between two adjacent single-unit magnet steels, floating bearing is installed, thus has made integral rotor magnet steel have certain flexibility, prevented because rigidity is too high and easily damage.
Figure 28 is the structural representation of Figure 27 rotor standard magnet steel.As shown in figure 28, in watt shape shape in rotor standard magnet steel 2000 general structure, material is permanent magnet.
Figure 29 is the end view drawing of Figure 27 rotor standard magnet steel.As shown in figure 29, from end face, rotor standard magnet steel comprises outer surface 2001, step surface 2002, inner surface 2003 are formed, and all curved.Outer surface 2001 is for forming magnetic gap with stator; Step surface 2002 is for installing the radial compaction ring 30215 of clamping magnet steel; Inner surface 2003 is fixing for coordinating with rotor main shaft 303.
Figure 30 is the A-A face cutaway view of Figure 28 rotor standard magnet steel.As shown in figure 30, from axial section, comprise part 2001,2002 that step surface formed and the part 2003 that circular arc inner surface is formed.
Figure 31 is the structural representation of Figure 27 rotor keyway magnet steel.As shown in figure 31, rotor keyway magnet steel 3000 is axially provided with elongated key grooves 3100 in inner surface side, is provided with two keyway magnet steel, thus prevents magnet steel at play circumferentially in each single magnet steel ring of composition rotor magnetic steel assembly 302.
Figure 32 is the end view drawing of Figure 27 rotor keyway magnet steel.As shown in figure 32, from end face, rotor keyway magnet steel 3000 comprises outer surface 3001, step surface 3002, inner surface 3003 are formed, keyway 3004, and in fact more rotor keyway magnet steel is provided with keyway on the basis of rotor standard magnet steel.The effect of the surface 3001 of rotor keyway magnet steel, step surface 3002, inner surface 3003 is identical with rotor standard magnet steel, and keyway 3004 for magnet steel in location circumferentially, prevent magnet steel at play circumferentially.
Figure 33 is the layout viewing of the single magnet steel group of Figure 27 rotor.Figure 34 is main shaft, stators and rotators assembly relation schematic diagram.As shown in figs. 33 and 34, single magnet steel group 3024 is evenly arranged in the outer surface of magnet steel strutting piece 4000 circumferentially by 8 standard magnet steel 2000 and 2 keyway magnet steel 3000.2 keyway magnet steel, with keyway arranged relative, form keyway jointly with the groove on magnet steel strutting piece 4000, connected position and prevent magnet steel at play circumferentially by key 5000.Magnet steel strutting piece 4000 is connected with rotor main shaft 303 by keyway 5000 again, thus the rotor formed with magnet steel group is overall, and its outer cover establishes the single-unit iron core 203 in stator assembly 200.
As shown in the above, the present invention adopts housing to be integral type, and stator, rotor are multi-section type, rotor main shaft is hollow shaft, and the mode of oiling in the body of motor internal cabin, overcomes defect of the prior art, make latent oily permagnetic synchronous motor optimize electromagnetic scheme, thus improve motor performance; Improve process program, thus improve reliability; Devise oil circulation structure, thus solve heat dissipation problem.This oily permagnetic synchronous motor of diving adopts the design of assembly mould blocking, improves packaging technology, and structure is simple and can flexible design as required.In addition, latent oily permagnetic synchronous motor of the present invention can realize low-speed big, and therefore down-hole drives the reliable for effect stable of pump, be applicable to all in down-hole by the scope that electric pump is pumped, be specially adapted to screw pump oil pumping occasion.
Claims (9)
1. an oily permagnetic synchronous motor of diving, comprise electric machine casing, in electric machine casing, correspondence is provided with stators and rotators, it is characterized in that, the two ends of described electric machine casing are sealed respectively and are connected with other external device (ED)s by coupling arrangement, are integrally formed the housing unit of formula structure; Described stators and rotators is respectively stator assembly and the rotor assembly of multi-section type structure, described stator assembly is fixed on housing unit, described rotor assembly is located in stator assembly inside, compresses location between described stator assembly and rotor assembly; Fluid is injected in housing unit.
2. oily permagnetic synchronous motor of diving as claimed in claim 1, is characterized in that, described housing unit comprises housing and is separately positioned on output coupling head and the coupling head of afterbody end at housing two ends, and described output connecting head is connected by thrust bearing with between housing; Described output coupling head be used for diving with this protector of oily permagnetic synchronous motor outside, pump is connected, accesses oil-submersible cable, and to enclosure interior oiling; Described afterbody end coupling head for installing encoder, and is connected with the sealing device of outside and controller.
3. oily permagnetic synchronous motor of diving as claimed in claim 2, it is characterized in that, described stator assembly comprises multiple single-unit iron core, press-fit by internode the composition multi-section type stator core that is connected with each other between two adjacent single-unit iron cores, respectively set gradually hold-down ring and jump ring by center to both sides at the two ends of described multi-section type stator core, multi-section type stator core is compressed location.
4. oily permagnetic synchronous motor of diving as claimed in claim 2, it is characterized in that, described rotor assembly comprises the magnet steel assembly be set on rotor main shaft, and the two ends of rotor main shaft are respectively equipped with rotor output axle sleeve and rotor afterbody end axle sleeve;
Described magnet steel assembly is multi-section type structure, and being connected to each other by floating bearing by multiple single magnet steel group is formed, and each single magnet steel group is evenly arranged in by 10 magnet steel and circumferentially forms.
5. oily permagnetic synchronous motor of diving as claimed in claim 4, is characterized in that, in 10 magnet steel of described single magnet steel group, comprise 8 standard magnet steel and 2 keyway magnet steel;
The two ends of described standard magnet steel and keyway magnet steel are provided with step respectively in the axial direction, and the step on multiple standard magnet steel and keyway magnet steel is combined into cannelure, and the cannelure between adjacent two single magnet steel groups arranges radial compaction ring;
The two ends of described single magnet steel group, are also provided with axial compression ring.
6. oily permagnetic synchronous motor of diving as claimed in claim 2, it is characterized in that, described output coupling head comprises body, one end of described body is provided with gas thread, for being connected with described housing, the middle part of body is provided with oil filler point, and the other end of body is provided with the screwed hole combination for connecting;
The inside of described body is provided with and connects screwed hole, delivery outlet, bearing mounting hole, pin connection holes, axially extending bore, curve slope, cable interface, groove, gas thread, axial oil-through hole and radial oil filler point; Described connection screwed hole is evenly distributed on output circumference of flange; Output motor main shaft output is provided with in described delivery outlet; Thrust bearing installs location in described bearing mounting hole; The thrust collar of described thrust bearing is fixing in described pin connection holes; Motor output shaft is located in described axially extending bore; Input cable enters housing by described cable interface through curve slope; O RunddichtringO is provided with in groove; Described housing is tightly connected by gas thread and output coupling head; Fluid is transported to motor internal by radial oil filler point and enters axial oil-through hole.
7. oily permagnetic synchronous motor of diving as claimed in claim 3, it is characterized in that, described single-unit iron core comprises silicon steel sheet, and described silicon steel sheet is provided with stator slot, arc groove, coiling fluting and housing connection slot, forms the open flume type stator core construction of 12 grooves; Winding coil is arranged on stator slot, and cable is through arc groove, and silicon steel sheet is connected with stator core and housing by housing connection slot.
8. oily permagnetic synchronous motor of diving as claimed in claim 4, it is characterized in that, described rotor main shaft is slim-lined construction, comprises output, interlude and afterbody end; Described output is splined shaft; Described interlude is hollow shaft, and radial direction is evenly distributed with multiple oil-through hole, is also provided with the elongated key grooves for assemble rotor assembly; Described afterbody end is hollow shaft;
Described output is provided with spline, consent, groove, radial oil-through hole and hollow axis hole, the spline joint of described spline and motor output shaft; Installed thrust bearing in groove;
Described interlude is provided with radial oil-through hole and hollow axis hole;
Described afterbody end is provided with radial oil-through hole, hollow axis hole and encoder installing hole.
9. oily permagnetic synchronous motor of diving as claimed in claim 5, it is characterized in that, described keyway magnet steel is circular arc sheet structure, comprise outer surface and the inner surface of arc, in the both sides of the edge of outer surface, prolong its axial direction and be respectively equipped with step surface, at a lateral edges of inner surface, prolong its radial direction and be provided with keyway for making magnet steel circumferentially locate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739094.XA CN104753284B (en) | 2013-12-27 | 2013-12-27 | Latent oil permagnetic synchronous motor |
| PCT/CN2014/089544 WO2015096547A1 (en) | 2013-12-27 | 2014-10-27 | Submersible permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310739094.XA CN104753284B (en) | 2013-12-27 | 2013-12-27 | Latent oil permagnetic synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104753284A true CN104753284A (en) | 2015-07-01 |
| CN104753284B CN104753284B (en) | 2017-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310739094.XA Expired - Fee Related CN104753284B (en) | 2013-12-27 | 2013-12-27 | Latent oil permagnetic synchronous motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104753284B (en) |
| WO (1) | WO2015096547A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134867A (en) * | 2016-02-29 | 2017-09-05 | 中石化石油工程技术服务有限公司 | The downhole electric drilling tool driving few coil permasyn morot of overlength iron core |
| CN113364235A (en) * | 2021-05-28 | 2021-09-07 | 山东威马泵业股份有限公司 | Coil inserting process method for stator of submersible motor |
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| WO2022007898A1 (en) * | 2020-07-08 | 2022-01-13 | 浙江都美电气技术股份有限公司 | Submersible permanent magnet synchronous motor |
| CN116545138A (en) * | 2023-06-27 | 2023-08-04 | 无锡恒信北石科技有限公司 | Stator structure and welding process thereof |
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| CN107064562B (en) * | 2017-04-20 | 2023-03-24 | 吉林宇恒光电仪器有限责任公司 | Calibration device for output rotating speed error of photoelectric encoder |
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| CN101877521A (en) * | 2009-04-30 | 2010-11-03 | 浙江关西电机有限公司 | Multi-section servo submersible motor |
| CN102223032A (en) * | 2011-06-27 | 2011-10-19 | 沈阳工业大学 | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors |
| CN203289295U (en) * | 2013-05-31 | 2013-11-13 | 中国石油大学(华东) | Low-speed large-torque submersible permanent-magnetic synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107134867A (en) * | 2016-02-29 | 2017-09-05 | 中石化石油工程技术服务有限公司 | The downhole electric drilling tool driving few coil permasyn morot of overlength iron core |
| WO2022007898A1 (en) * | 2020-07-08 | 2022-01-13 | 浙江都美电气技术股份有限公司 | Submersible permanent magnet synchronous motor |
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| CN113517767B (en) * | 2021-04-21 | 2024-01-26 | 沈阳工业大学 | Slender small-diameter low-speed high-torque submersible permanent magnet motor |
| CN113364235A (en) * | 2021-05-28 | 2021-09-07 | 山东威马泵业股份有限公司 | Coil inserting process method for stator of submersible motor |
| CN113364235B (en) * | 2021-05-28 | 2023-02-14 | 山东威马泵业股份有限公司 | Coil inserting process method for stator of submersible motor |
| CN116545138A (en) * | 2023-06-27 | 2023-08-04 | 无锡恒信北石科技有限公司 | Stator structure and welding process thereof |
| CN116545138B (en) * | 2023-06-27 | 2023-10-24 | 无锡恒信北石科技有限公司 | Stator structure and welding process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104753284B (en) | 2017-08-08 |
| WO2015096547A1 (en) | 2015-07-02 |
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Effective date of registration: 20170825 Address after: Hangzhou City, Zhejiang province Tonglu County Tonglu 311500 Beach Road Economic Development Zone No. 77 Patentee after: Hangzhou Corecess energy-saving equipment Limited by Share Ltd Address before: 5, 310052 floor, Green fair, -B, 1805 east stream Road, Hangzhou, Zhejiang, Binjiang District Patentee before: Zhejiang Zhongke Derun Technology Co.,Ltd. |
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