CN114421671A - Submersible permanent magnet motor - Google Patents
Submersible permanent magnet motor Download PDFInfo
- Publication number
- CN114421671A CN114421671A CN202210308270.3A CN202210308270A CN114421671A CN 114421671 A CN114421671 A CN 114421671A CN 202210308270 A CN202210308270 A CN 202210308270A CN 114421671 A CN114421671 A CN 114421671A
- Authority
- CN
- China
- Prior art keywords
- motor
- rotating shaft
- stator
- barrel
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H02K1/2746—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 arranged with the same polarity, e.g. consequent pole type
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/03—Machines characterised by thrust bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of submersible motors, in particular to a submersible permanent magnet motor, which comprises a cylinder body; the motor head is arranged at one end of the cylinder body; the motor base is arranged at the other end of the cylinder body and is matched with the motor head and the cylinder body to form a sealed cavity; the stator component is arranged in the sealing cavity and internally provided with a rotating cavity which is the same as the axial direction of the cylinder; the rotor assembly rotates in the rotating cavity of the stator assembly, and two ends of the rotor assembly are respectively connected with the motor head and the motor base; the rotor assembly comprises a rotating shaft, one end of the rotating shaft is connected with the motor head through a thrust bearing, and the other end of the rotating shaft is connected with the motor base; the permanent magnets are sequentially arranged on the rotating shaft, and the same polarities of the permanent magnets are kept on the same side of the rotating shaft; the periphery of the plurality of centralizing bearings is propped against the inner wall of the rotating cavity; wherein, the motor head is provided with a wire hole for connecting an external power line with the stator assembly.
Description
Technical Field
The invention relates to the technical field of submersible motors, in particular to a submersible permanent magnet motor.
Background
Under current energy saving and emission reduction's demand, when traditional latent oily induction motor carries out oil recovery in the pit, its stator structure and rotor structure all need the circular telegram excitation to produce and drive the rotor structure and rotate, and this needs to consume a large amount of energy, and the copper loss and the electromagnetism line loss of rotor and stator are all higher, lead to later maintenance high cost, and cause the comprehensive of motor to lift inefficiency easily, are unfavorable for improving production efficiency. Therefore, how to effectively realize the energy conservation and environmental protection of the submersible motor and simultaneously keep the stable production efficiency becomes a problem which needs to be solved urgently in the submersible lifting industry.
Disclosure of Invention
The invention provides a submersible permanent magnet motor, which aims to at least solve one of the technical problems in the prior art.
The technical scheme of the invention is that the submersible permanent magnet motor is characterized by comprising the following components: a barrel; the motor head is arranged at one end of the cylinder body; the motor base is arranged at the other end of the barrel and is matched with the motor head and the inner wall of the barrel to form a sealing cavity; the stator component is arranged in the sealing cavity and internally provided with a rotating cavity which is the same as the axial direction of the cylinder body; the rotor assembly rotates in the rotating cavity of the stator assembly, and two ends of the rotor assembly are respectively connected with the motor head and the motor base; wherein the rotor assembly comprises: one end of the rotating shaft is connected with the motor head through a thrust bearing, the other end of the rotating shaft is connected with the motor base, a shaft core hole is formed in the axis of the rotating shaft along the axial direction of the rotating shaft, a plurality of oil through holes are formed in the rotating shaft, and the oil through holes are communicated with the shaft core hole and the outside of the rotating shaft; the permanent magnets are sequentially arranged on the rotating shaft, and the same polarities of the permanent magnets are kept on the same side of the rotating shaft; the plurality of the centering bearings are respectively arranged on the rotating shaft among the plurality of the permanent magnets, and the peripheries of the plurality of the centering bearings are abutted against the inner wall of the stator assembly rotating cavity; the periphery of the righting bearing is provided with an anti-rotation elastic sheet abutting against the inner side wall of the rotation cavity, and the anti-rotation elastic sheet abuts against the inner side wall of the stator unit; the motor head is provided with a wire outlet for connecting an external power wire with the stator assembly. The stator assembly includes: the stator units are sequentially arranged in the sealed cavity, each stator unit is formed by laminating and riveting a plurality of stator laminations, slotted holes are uniformly distributed in each stator unit along the circumference, and each stator unit corresponds to each permanent magnet; and the electromagnetic wire is arranged in the slot hole and is connected with the power line.
Furthermore, a first shaft hole is arranged on the motor head in a penetrating manner, and one end of the rotating shaft is arranged in the first shaft hole; a second shaft hole is formed in the motor base, and the other end of the rotating shaft is arranged in the second shaft hole; the motor head is provided with a sinking platform with the inner diameter larger than that of the first shaft hole at one end of the first shaft hole far away from the cylinder; wherein the thrust bearing comprises: a static disc installed in the sinking platform; the plurality of floating tiles are embedded on one side of the static disc, which is far away from the sinking platform; and the movable disc is sleeved at one end of the rotating shaft through the shaft hole, and one side of the movable disc, which faces the sinking platform, is in sliding butt joint with the floating tile.
Furthermore, a first key groove is formed in the surface of one end of the rotating shaft, a second key groove corresponding to the first key groove is formed in the shaft hole of the movable disc, and wedge blocks are further arranged, wherein the two sides of the wedge blocks are respectively embedded in the first key groove and the second key groove.
Further, the both ends of barrel inner wall are equipped with the tip internal thread respectively, one of motor head is close to the barrel is served and is equipped with the first external screw thread of the internal thread of tip of threaded connection barrel one end, one of motor base is close to the barrel is served and is equipped with the internal thread second external screw thread of the internal thread of tip of the threaded connection barrel other end.
Furthermore, the end part of the rotating shaft, which is opposite to the sinking platform, is provided with a connecting spline.
Furthermore, an expansion cavity is formed in one end, far away from the barrel, of the motor base, and expansion internal threads are formed in the inner wall of the expansion cavity.
Furthermore, the joints between the barrel body and the motor head and between the barrel body and the motor base are provided with first sealing rings, and second sealing rings are arranged in the wire outlet holes.
The invention has the beneficial effects that:
1. according to the invention, the permanent magnet rotor with high magnetic suction strength is adopted, so that the rotor assembly establishes a permanent fixed magnetic field, the rotor assembly does not need to be excited like a traditional induction motor, compared with the induction motor which generates a magnetic field by electrifying a rotor winding, the structure reduces the copper loss of the rotor caused by the induced current of the rotor, adaptively reduces the running current of the stator assembly, reduces the cable loss and the stator loss of the three-phase stator assembly, and can effectively improve the comprehensive lifting efficiency of the system of the electric submersible pump.
2. Through the barrel, the sealed chamber that motor head and motor base cooperation formed, realize the inside and external isolation of PMSM, the oily application of diving of PMSM has been realized, thereby can realize the inside oil charge of motor, with the rotational resistance and the local improvement radiating effect that reduce the motor, and compare in traditional induction motor, the stator module of optimization can make motor power factor, efficiency and power density promote by a wide margin, motor length can be shortened greatly simultaneously, the engineering time of installation and the possibility that latent fault takes place have been reduced.
3. The thrust bearing can cooperate the motor head to realize that it is spacing to carry out the axial to the pivoted motor shaft, takes place the displacement and cause the motor vibrations along the axial when avoiding the rotor subassembly to rotate, reduces each part loss that the inside vibrations of motor lead to.
Drawings
Fig. 1 is a schematic diagram of the overall structure according to an embodiment of the present invention.
Fig. 2 is a schematic view of an assembly of a stator assembly with a housing according to an embodiment of the invention.
Fig. 3 is a schematic view of the assembly of a rotor assembly with a rotating shaft according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention.
Fig. 5 is a transverse sectional view of a rotating shaft according to an embodiment of the present invention.
FIG. 6 is a schematic view of the assembly of the stationary disk and the floating tiles of the thrust bearing according to an embodiment of the invention.
Fig. 7 is a cross-sectional view taken at a-a in fig. 6.
FIG. 8 is a schematic structural view of a thrust bearing thrust plate according to an embodiment of the present invention.
Fig. 9 is a sectional view at B-B in fig. 8.
Fig. 10 is a longitudinal sectional view of a motor head according to an embodiment of the present invention.
Fig. 11 is a longitudinal sectional view of a motor base according to an embodiment of the present invention.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of upper, lower, left, right, top, bottom, etc. used in the present invention are only relative to the positional relationship of the components of the present invention with respect to each other in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.
Referring to fig. 1-3, in some embodiments, a submersible permanent magnet electric machine according to the present disclosure includes a cartridge 100; a motor head 400 disposed at one end of the cylinder 100 and closing one end of the cylinder 100; the motor base 500 is arranged at the other end of the cylinder body 100 and seals the other end of the cylinder body 100, and the motor base 500 is matched with the motor head 400 to form a sealed cavity in the cylinder body 100; the stator assembly 200 is arranged on the inner wall of the cylinder body 100 in the sealing cavity, and the stator assembly 200 is internally provided with a rotating cavity 230 which is the same as the cylinder body 100 in the axial direction; the rotor assembly 300 rotates in the rotating cavity 230 of the stator assembly 200, and two ends of the rotor assembly are respectively connected with the motor head 400 and the motor base 500; wherein the rotor assembly 300 includes: a rotating shaft 310, one end of which 310 is rotatably connected with the motor head 400 through a thrust bearing 600, and the other end of which 310 is rotatably connected with a motor base 500; the permanent magnets 320 are sequentially arranged on the rotating shaft 310, and the same polarity of the permanent magnets 320 is kept on the same side of the rotating shaft 310; the plurality of centering bearings 330 are respectively arranged on the rotating shaft 310 among the plurality of permanent magnets 320, and the peripheries of the plurality of centering bearings 330 are abutted against the inner wall of the rotating cavity 230 of the stator assembly 200; the motor head 400 is provided with an outlet 420 for connecting an external power line to the stator assembly 200. According to the invention, the permanent magnet 320 rotor with high magnetic suction strength is adopted, so that the rotor assembly 300 can establish a permanent fixed magnetic field, the rotor assembly 300 does not need to be excited like a traditional induction motor, compared with an induction motor which generates a magnetic field by electrifying a rotor winding, the structure reduces the rotor copper loss caused by rotor induced current, adaptively reduces the running current of the stator assembly 200, reduces the cable loss and the stator loss of the three-phase stator assembly 200, and can effectively improve the comprehensive lifting efficiency of the system of the submersible electric pump. Specifically, the interior of the permanent magnet synchronous motor is isolated from the outside through a sealing cavity formed by matching the cylinder body 100, the motor head 400 and the motor base 500, the submersible application of the permanent magnet synchronous motor is realized, so that oil filling in the motor can be realized, the rotation resistance of the motor is reduced, the heat dissipation effect is locally improved, the connection of an external power line and a three-phase stator assembly 200 in the motor can be realized through the wire outlet 420, and compared with the traditional induction motor, the optimized stator assembly 200 can greatly improve the power factor, efficiency and power density of the motor, greatly shorten the length of the motor and reduce the construction time for installation and the possibility of potential failure; thrust bearing 600 can cooperate the motor head 400 to realize carrying out the axial spacing to the pivoted motor shaft, and along the axial displacement and cause the motor vibrations when avoiding rotor assembly 300 to rotate, each part loss that the inside vibrations of reduction motor lead to.
Referring to fig. 4 and 5, in order to reduce the high temperature generated by the rotating shaft 310 rotating at high speed when the motor of the present invention operates, a shaft core hole 311 is formed along the axial direction of the shaft core of the rotating shaft 310, a plurality of oil through holes 312 are formed in the rotating shaft 310, the oil through holes 312 are communicated with the shaft core hole 311 and the outside of the rotating shaft 310, specifically, the oil through holes 312 are radially formed in the rotating shaft 310, so that the oil injected into the motor sealed cavity can flow into the shaft core hole 311 of the rotating shaft 310 through the oil through holes 312 and then flow out from the other oil through holes 312, and the heat generated by the rotation of the rotating shaft 310 through the oil circulation can be dissipated through the whole motor, thereby avoiding the heat accumulation from affecting the motor performance.
Specifically, the permanent magnets 320 include stator magnetic cylinders sequentially mounted on the rotating shaft 310, and the stator magnetic cylinders are formed by riveting and stacking magnetic disks made of rare earth permanent magnet materials.
Referring to fig. 2, the stator assembly 200 includes: the stator units 210 are sequentially embedded in the sealed cavity, namely, the cylinder 100, each stator unit 210 is formed by laminating and riveting a plurality of stator laminations, slots are uniformly distributed in each stator unit 210 along the circumference, and each stator unit 210 corresponds to each permanent magnet 320; the magnet wire 220 is disposed in the slot, and is connected to the power line, specifically, the stator lamination is a silicon steel sheet, the slot is formed on the silicon steel sheet, and the slots of the plurality of stator units 210 are corresponding to each other one by one and communicated with each other, so that the magnet wire 220 penetrates through the slot to form a three-phase stator winding.
Referring to fig. 6 to 11, since most of motors work in a vertical oil well, a rotor structure is easy to move toward a motor base 500 at the bottom of the motor during the working process of the motor, and the motor base 500 is worn after long-term operation, in order to improve the stability of the rotation of the rotor assembly 300 and the life of the motor base 500, a first shaft hole 410 is formed in the motor head 400 in a penetrating manner, and one end of the rotating shaft 310 rotates in the first shaft hole 410; a second shaft hole 510 is formed in the motor base 500, and the other end of the rotating shaft 310 rotates in the second shaft hole 510; the motor head 400 is provided with a sinking platform 430 with an inner diameter larger than that of the first shaft hole 410 at one end of the first shaft hole 410 far away from the cylinder 100; wherein the thrust bearing 600 includes: a stationary plate 610 installed in the sink table 430; a plurality of floating tiles 630 embedded on one side of the static plate 610 far away from the sinking platform 430; and the movable plate 610 is sleeved at one end of the rotating shaft 310 through the shaft hole 621, one side of the movable plate 610 facing the sinking platform 430 is in sliding butt joint with the floating tiles 630, so that when the rotating shaft 310 rotates, the movable plate 620 and the floating tiles 630 arranged on the static plate 610 in the sinking platform 430 are in sliding friction, the rotating shaft 310 is prevented from moving towards the motor base 500 in the rotating process, specifically, the number of the floating tiles 630 is six, and the six floating tiles 630 are uniformly embedded on the static plate 610.
Referring to fig. 3, in order to suppress and absorb the vibration generated in the rotation process of the rotor assembly 300 and avoid the phenomenon that the centering bearing 330 is loosened and rotated due to vibration and abrasion between the centering bearing 330 and the rotation cavity 230 of the stator assembly 200, the outer periphery of the centering bearing 330 is provided with an anti-rotation elastic piece 340 abutting against the inner side wall of the rotation cavity 230, specifically, the anti-rotation elastic piece 340 abuts against the inner side wall of the stator unit 210, so that the influence caused by the vibration generated in the rotation process of the rotor assembly 300 is minimized by elastic deformation of the anti-rotation elastic piece 340 when the anti-rotation elastic piece 340 is embedded in the rotation cavity 230.
Referring to fig. 3 to 5, in order to ensure that the movable disk 620 and the rotating shaft 310 can be tightly fitted together and prevent loosening, a first key groove 314 is formed on the surface of one end of the rotating shaft 310, a second key groove 622 corresponding to the first key groove 314 is formed in a shaft hole 621 of the movable disk 620, and a wedge block is further provided, both sides of which are respectively embedded in the first key groove 314 and the second key groove 622, and specifically, the wedge block is inserted into the first key groove 314 and the second key groove 622 from the top end of the rotating shaft 310 until both side surfaces of the wedge block abut against the bottom edges of the first key groove 314 and the second key groove 622, so as to achieve locking.
Referring to fig. 2, 10 and 11, in order to facilitate the rapid assembly of the cylinder 100, the motor head 400 and the motor base 500 and improve the production efficiency, the two ends of the inner wall of the cylinder 100 are respectively provided with the end internal threads 110, one end of the motor head 400 close to the cylinder 100 is provided with a first external thread 440 in threaded connection with the end internal threads 110 at one end of the cylinder 100, and one end of the motor base 500 close to the cylinder 100 is provided with a second external thread 520 in threaded connection with the end internal threads 110 at the other end of the cylinder 100.
Referring to fig. 1, 3 and 4, in order to facilitate that the rotating shaft 310 of the permanent magnet motor of the present invention can be tightly connected with the main shaft of the pump body when being integrally assembled with the pump body in an oil well, and avoid a slipping phenomenon, one end of the rotating shaft 310, which is opposite to the sinking platform 430, is provided with a connecting spline 313.
Referring to fig. 11, in order to facilitate the motor of the present invention to be integrally connected with other downhole tools in an oil well, an expansion cavity 530 is formed at one end of the motor base 500 away from the cylinder 100, and an expansion internal thread 531 is formed on an inner wall of the expansion cavity 530, so that the other downhole tools can be quickly assembled and connected with the permanent magnet motor of the present invention by screwing the expansion internal thread of the expansion cavity 530.
Referring to fig. 1, in order to improve the sealing performance of the motor of the present invention and avoid motor failure due to leakage, first sealing rings 700 are disposed at the joints between the cylinder 100 and the motor head 400 and the motor base 500, and second sealing rings are disposed in the wire outlet holes 420.
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present disclosure should be included in the scope of the present disclosure as long as the technical effects of the present invention are achieved by the same means. Are intended to fall within the scope of the present invention. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (7)
1. A submersible permanent magnet motor, comprising:
a barrel (100);
the motor head (400) is arranged at one end of the barrel (100);
the motor base (500) is arranged at the other end of the barrel (100), and the motor base (500) is matched with the motor head (400) and the inner wall of the barrel (100) to form a sealing cavity;
the stator assembly (200) is arranged in the sealing cavity, and a rotating cavity (230) which is the same as the axial direction of the barrel body (100) is arranged in the stator assembly (200); and
the rotor assembly (300) rotates in the rotating cavity (230) of the stator assembly (200), and two ends of the rotor assembly are respectively connected with the motor head (400) and the motor base (500);
wherein the rotor assembly (300) comprises:
one end of the rotating shaft (310) is connected with the motor head (400) through a thrust bearing (600), the other end of the rotating shaft (310) is connected with a motor base (500), a shaft core hole (311) is formed in the axial direction of the shaft core of the rotating shaft (310), a plurality of oil through holes (312) are formed in the rotating shaft (310), and the oil through holes (312) are communicated with the shaft core hole (311) and the outside of the rotating shaft (310);
the permanent magnets (320) are sequentially arranged on the rotating shaft (310), and the same polarities of the permanent magnets (320) are kept on the same side of the rotating shaft (310);
the stator assembly comprises a plurality of centering bearings (330), wherein the centering bearings (330) are respectively arranged on a rotating shaft (310) among a plurality of permanent magnets (320), the peripheries of the centering bearings (330) are abutted against the inner wall of a rotating cavity (230) of the stator assembly (200), anti-rotating elastic sheets (340) abutted against the inner side wall of the rotating cavity (230) are arranged on the peripheries of the centering bearings (330), and the anti-rotating elastic sheets (340) are abutted against the inner side wall of the stator unit (210);
wherein, the motor head (400) is provided with an outlet hole (420) for connecting an external power line with the stator component (200);
the stator assembly (200) includes:
the stator units (210) are sequentially arranged in the sealed cavity, each stator unit (210) is formed by laminating, riveting and connecting a plurality of stator laminations, slotted holes are uniformly distributed in each stator unit (210) along the circumference, and each stator unit (210) corresponds to each permanent magnet (320);
and the electromagnetic wire (220) is arranged in the slot hole and is connected with the power line.
2. The submersible permanent magnet motor of claim 1,
a first shaft hole (410) is formed in the motor head (400) in a penetrating mode, and one end of the rotating shaft (310) is arranged in the first shaft hole (410);
a second shaft hole (510) is formed in the motor base (500), and the other end of the rotating shaft (310) is arranged in the second shaft hole (510);
a sinking platform (430) with the inner diameter larger than that of the first shaft hole (410) is arranged at one end, far away from the cylinder body (100), of the motor head (400) in the first shaft hole (410);
wherein the thrust bearing (600) comprises:
a stationary plate (610) mounted within the sink deck (430);
a plurality of floating tiles (630) embedded on one side of the static disc (610) far away from the sinking platform (430); and
the movable plate (620) is sleeved at one end of the rotating shaft (310) through a shaft hole (621), and one side, facing the sinking platform (430), of the movable plate is in sliding abutting joint with the floating tile (630).
3. The submersible permanent magnet motor of claim 2,
the surface of one end of the rotating shaft (310) is provided with a first key groove (314), a shaft hole (621) of the movable disc (620) is internally provided with a second key groove (622) corresponding to the first key groove (314), and the surface of the movable disc is also provided with a wedge block, two sides of which are respectively embedded in the first key groove (314) and the second key groove (622).
4. The submersible permanent magnet motor of claim 1,
both ends of barrel (100) inner wall are equipped with tip internal thread (110) respectively, one of motor head (400) being close to barrel (100) is served and is equipped with first external screw thread (440) of the tip internal thread (110) of threaded connection barrel (100) one end, one of motor base (500) being close to barrel (100) is served and is equipped with second external screw thread (520) of the tip internal thread (110) of the threaded connection barrel (100) other end.
5. The submersible permanent magnet motor of claim 2,
and a connecting spline (313) is arranged at the end part of the rotating shaft (310) opposite to the sinking platform (430).
6. The submersible permanent magnet motor of claim 1,
an expansion cavity (530) is formed in one end, far away from the barrel (100), of the motor base (500), and an expansion internal thread (531) is arranged on the inner wall of the expansion cavity (530).
7. The submersible permanent magnet motor of claim 1,
the connection parts between the cylinder body (100) and the motor head (400) and the motor base (500) are provided with first sealing rings (700), and second sealing rings are arranged in the wire outlet holes (420).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308270.3A CN114421671A (en) | 2022-03-28 | 2022-03-28 | Submersible permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308270.3A CN114421671A (en) | 2022-03-28 | 2022-03-28 | Submersible permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114421671A true CN114421671A (en) | 2022-04-29 |
Family
ID=81262994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210308270.3A Pending CN114421671A (en) | 2022-03-28 | 2022-03-28 | Submersible permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114421671A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0556583A (en) * | 1991-08-22 | 1993-03-05 | Seiko Epson Corp | Permanent magnet rotor |
| US5864191A (en) * | 1992-08-12 | 1999-01-26 | Seiko Epson Corporation | Efficient permanent magnet rotor for brushless motor |
| CN1571253A (en) * | 2003-07-25 | 2005-01-26 | 陈明灯 | A DC brushless motor |
| CN2817188Y (en) * | 2005-08-05 | 2006-09-13 | 天津市油田采油成套设备有限公司 | Integrated oil-submersible motor with sealing device |
| CN102005883A (en) * | 2010-11-15 | 2011-04-06 | 江门市瑞荣泵业有限公司 | Self-control permanent magnet synchronous motor of well submersible pump |
| CN106160342A (en) * | 2016-08-23 | 2016-11-23 | 沈阳工业大学通益科技有限公司 | A kind of heat resisting motor being applicable to high-temperature submersible electric pump |
| CN208479438U (en) * | 2018-07-20 | 2019-02-05 | 湖南易特机电科技有限公司 | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump |
| CN109672309A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | A kind of synchronous reluctance submersible motor |
| CN109861452A (en) * | 2019-02-23 | 2019-06-07 | 中国石油大学(华东) | A kind of ocean floor drilling magneto |
| CN111706256A (en) * | 2020-07-21 | 2020-09-25 | 中国石油大学(华东) | Electric drilling tool suitable for ocean underwater drilling machine |
| CN214480211U (en) * | 2021-07-07 | 2021-10-22 | 沈阳工业大学通益科技有限公司 | Permanent magnet synchronous motor for driving high-temperature submersible electric pump |
-
2022
- 2022-03-28 CN CN202210308270.3A patent/CN114421671A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0556583A (en) * | 1991-08-22 | 1993-03-05 | Seiko Epson Corp | Permanent magnet rotor |
| US5864191A (en) * | 1992-08-12 | 1999-01-26 | Seiko Epson Corporation | Efficient permanent magnet rotor for brushless motor |
| CN1571253A (en) * | 2003-07-25 | 2005-01-26 | 陈明灯 | A DC brushless motor |
| CN2817188Y (en) * | 2005-08-05 | 2006-09-13 | 天津市油田采油成套设备有限公司 | Integrated oil-submersible motor with sealing device |
| CN102005883A (en) * | 2010-11-15 | 2011-04-06 | 江门市瑞荣泵业有限公司 | Self-control permanent magnet synchronous motor of well submersible pump |
| CN106160342A (en) * | 2016-08-23 | 2016-11-23 | 沈阳工业大学通益科技有限公司 | A kind of heat resisting motor being applicable to high-temperature submersible electric pump |
| CN109672309A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | A kind of synchronous reluctance submersible motor |
| CN208479438U (en) * | 2018-07-20 | 2019-02-05 | 湖南易特机电科技有限公司 | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump |
| CN109861452A (en) * | 2019-02-23 | 2019-06-07 | 中国石油大学(华东) | A kind of ocean floor drilling magneto |
| CN111706256A (en) * | 2020-07-21 | 2020-09-25 | 中国石油大学(华东) | Electric drilling tool suitable for ocean underwater drilling machine |
| CN214480211U (en) * | 2021-07-07 | 2021-10-22 | 沈阳工业大学通益科技有限公司 | Permanent magnet synchronous motor for driving high-temperature submersible electric pump |
Non-Patent Citations (2)
| Title |
|---|
| 王龙华: ""直驱潜油螺杆泵用永磁同步电动机关键结构设计"", 《中国知网数据库》 * |
| 王龙华: ""直驱潜油螺杆泵用永磁同步电动机关键结构设计"", 《中国知网数据库》, 15 July 2016 (2016-07-15), pages 36 - 48 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10323644B1 (en) | High-speed modular electric submersible pump assemblies | |
| US10767652B2 (en) | Permanent magnet submersible motor with a one-piece rotor/yoke configuration and resin embedded magnets | |
| US11133721B2 (en) | Electromagnetic coupling for ESP motor | |
| AU2016262712B2 (en) | A mechanical assembly for maintaining an air gap between a stator and rotor in an electro-mechanical energy converter | |
| US11118587B1 (en) | Modular electric submersible pump assemblies with cooling systems | |
| CN105162289B (en) | Downhole electric drilling tool motor | |
| CN208479438U (en) | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump | |
| US6218754B1 (en) | Electric motor of a submersible pump | |
| CN114421671A (en) | Submersible permanent magnet motor | |
| WO2017202319A1 (en) | Permanent magnet synchronous motor and electric vehicle | |
| WO2022007898A1 (en) | Submersible permanent magnet synchronous motor | |
| CN103795203B (en) | A kind of novel two-part seven phase fault tolerant permanent magnet motor | |
| CN205385355U (en) | Permanent magnet motor | |
| CN211819826U (en) | Mud pump driven by large-torque permanent magnet synchronous motor | |
| CN114069997A (en) | Double-stator double-rotor high-power marine permanent magnet propulsion motor | |
| CN209142983U (en) | Heavy permanent magnetism scrapper conveyor | |
| CN201781386U (en) | Rotary magnetic steel type rotor surface magnetic steel fixing device of oil submersible permanent magnet synchronous motor | |
| CN110994827A (en) | Axial magnetic leakage-proof three-rotor motor and assembling method thereof | |
| CN117411244B (en) | Sectional multi-stage cooling water-filled permanent magnet submersible motor | |
| CN211377724U (en) | Inner rotor motor permanent magnet fixing structure | |
| CN109787417A (en) | A kind of straight drive magnetic drive pump | |
| CN215498690U (en) | High-power suspension type permanent magnet direct drive motor | |
| CN215566716U (en) | Squirrel-cage disc type composite self-starting permanent magnet synchronous motor driven deep-well pump | |
| CN101882820A (en) | Direct current permanent magnetic upper wheel motor | |
| CN201774423U (en) | DC permanent magnet type head pulley motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220429 |