CN116885876B - Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor - Google Patents
Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor Download PDFInfo
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- CN116885876B CN116885876B CN202310786909.3A CN202310786909A CN116885876B CN 116885876 B CN116885876 B CN 116885876B CN 202310786909 A CN202310786909 A CN 202310786909A CN 116885876 B CN116885876 B CN 116885876B
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- main shaft
- stator
- disc
- motor
- oil
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- 230000004907 flux Effects 0.000 title claims abstract description 26
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 25
- 230000001012 protector Effects 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 52
- 239000010705 motor oil Substances 0.000 description 16
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2796—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the rotor face a stator
-
- 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
- H02K1/20—Stationary 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
- 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
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- 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
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an axial magnetic flux multi-disc type submersible permanent magnet synchronous motor, which relates to the technical field of submersible motors and comprises the following components: a shell which is cylindrical; the main shaft is in rotary fit with the shell and is coaxial with the shell; at least two motor units arranged at intervals along the axial direction of the main shaft, each motor unit comprising a plurality of stator discs arranged at intervals along the axial direction of the main shaft and a plurality of rotor discs arranged at intervals along the axial direction of the main shaft, each rotor disc being located between two adjacent stator discs, the stator discs being located at the ends of the motor unit or between two adjacent rotor discs; gaps are reserved between the rotor disc and the adjacent stator disc; the stator disc is fixedly connected with the shell, the rotor disc is fixedly sleeved on the main shaft, and the stator disc and the rotor disc are coaxial with the main shaft; permanent magnets are arranged on both sides of the rotor disc, and coils are symmetrically arranged on both sides of the stator disc; and an oil circulation passage for circulating cooling oil. The invention has high torque density and good heat dissipation performance.
Description
Technical Field
The invention relates to the technical field of submersible motors, in particular to an axial magnetic flux multi-disc submersible permanent magnet synchronous motor.
Background
The oil extraction technology of the submersible permanent magnet synchronous motor driven screw pump is widely applied to various large oil fields at present, and the working characteristics of the screw pump require that the driving motor has the performances of low rotating speed (50-500 r/min) and large torque (300-2000 Nm).
The inner diameter of the oil well casing is generally smaller, such as the common inner diameter of a 5.5 inch casing in China is generally 124mm, the diameter of the submersible motor is limited by the inner diameter, and in order to obtain enough torque, the torque of the submersible motor is generally improved in a length-increasing mode, so that the submersible motor is designed into an elongated structure with a large length and a small diameter, the length-diameter ratio can reach more than 100, and the requirements on various aspects such as design, processing and assembly are extremely high.
The existing submersible motor adopts radial magnetic flux design, is similar to the structures of common asynchronous motors and permanent magnet synchronous motors, is only provided with a plurality of centralizing bearings at a certain axial distance to avoid the rotor sweeping, has an extremely low slot filling rate due to an elongated structure, is generally 50% -60%, is limited by the wellhead size, and has lower power density and torque density due to a smaller diameter.
Disclosure of Invention
The invention aims to provide an axial magnetic flux multi-disc type submersible permanent magnet synchronous motor, which is used for solving the problems in the prior art and improving the torque density of the submersible motor.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides an axial magnetic flux multi-disc type submersible permanent magnet synchronous motor, which comprises:
the shell is cylindrical;
the main shaft is in running fit with the shell and is coaxial with the shell;
at least two motor units arranged at intervals along the axial direction of the main shaft, each motor unit comprising a plurality of stator disks arranged at intervals along the axial direction of the main shaft and a plurality of rotor disks arranged at intervals along the axial direction of the main shaft, each rotor disk being located between two adjacent stator disks, the stator disks being located at the ends of the motor unit or between two adjacent rotor disks; a gap is formed between the rotor disc and the adjacent stator disc; the stator disc is fixedly connected with the shell, the rotor disc is fixedly sleeved on the main shaft, and the stator disc and the rotor disc are coaxial with the main shaft; permanent magnets are arranged on two sides of the rotor disc, and coils are symmetrically arranged on two sides of the stator disc;
the oil circulation channel comprises an oil passing channel arranged in the main shaft and a plurality of oil throwing holes arranged on the main shaft, two adjacent stator discs and the rotor disc positioned between the two adjacent stator discs form a power unit, and the gap in each power unit is communicated with the oil passing channel through at least one oil throwing hole; the gap in any one power unit is communicated with the gap in the adjacent power unit through a stator oil channel, and the stator oil channel is arranged in the stator disc and is close to the inner wall of the shell; the first end of the main shaft extends out of the shell, the oil passing channel is provided with an opening at the second end of the main shaft, the main shaft is also provided with an oil return hole, the oil return hole communicates the oil passing channel with the space in the shell, and all the motor units are positioned between the oil return hole and the opening.
Preferably, a plurality of bearings are arranged on the main shaft along the axial direction at intervals, each motor unit is located between two adjacent bearings, a bearing sleeve is fixedly arranged in the casing corresponding to each bearing, an inner ring of the bearing is fixedly connected with the main shaft, and an outer ring of the bearing is fixedly connected with the inner wall of the bearing sleeve.
Preferably, the bearing sleeve is provided with a through hole close to the inner wall of the casing, and the length direction of the through hole is parallel to the axial direction of the main shaft.
Preferably, the main shaft is a hollow shaft, and the hollow part of the main shaft is used as the oil passing channel; the first end of the main shaft is open and is communicated with the inside of the motor protector.
Preferably, a positioning sleeve is arranged on the casing corresponding to the stator, and an oil through hole communicated with the adjacent stator oil channel is arranged in the positioning sleeve.
Preferably, one end of the casing, which is close to the first end of the main shaft, is provided with a motor head seat, the motor head seat is used for being connected with a motor protector and a power cable plug, the other end of the casing is provided with a motor tail seat, and the motor tail seat is used for being connected with other motors or anchors.
Compared with the prior art, the invention has the following technical effects:
the axial magnetic flux multi-disc submersible permanent magnet synchronous motor improves the torque density of the submersible motor.
Specifically, the axial magnetic flux multi-disc type submersible permanent magnet synchronous motor improves the utilization rate of the radial space of the submersible motor through the axial magnetic flux design, further improves the torque density of the submersible motor, enables the submersible motor to have higher power and torque under the condition of the same length, and enables the length of the submersible motor to be shorter under the condition of the same power and torque.
In addition, in the axial magnetic flux multi-disc type submersible permanent magnet synchronous motor, the contact area of the stator, the rotor and motor oil is improved by a plurality of times compared with the conventional design through the axial magnetic flux design, the structure can generate forced convection to accelerate the flow speed of the motor oil, and meanwhile, one half of the oil circulation channel is positioned on the surface layer of the motor, so that the heat dissipation effect of the motor is improved by a plurality of times compared with the conventional design, and the electromagnetic design can select higher electromagnetic load; the stator winding is a conventional small-sized coil, so that automatic batch processing can be realized, and compared with manual threading of a conventional submersible motor, the operation difficulty, labor cost, rejection rate and the like are greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of an axial flux multi-disc submersible permanent magnet synchronous motor of the present invention;
FIG. 2 is a schematic structural view of an axial flux multi-disc submersible permanent magnet synchronous motor of the invention;
FIG. 3 is a schematic view of a part of the structure of an axial flux multi-disc submersible permanent magnet synchronous motor of the invention;
FIG. 4 is a schematic view of a part of the structure of an axial flux multi-disc submersible permanent magnet synchronous motor of the invention;
FIG. 5 is a schematic view of a part of the structure of an axial flux multi-disc submersible permanent magnet synchronous motor of the invention;
FIG. 6 is a schematic view of a part of the structure of an axial flux multi-disc submersible permanent magnet synchronous motor of the invention;
FIG. 7 is a schematic diagram of a power unit in an axial flux multi-disc submersible permanent magnet synchronous motor of the present invention;
FIG. 8 is a schematic structural view of a stator disk in an axial flux multi-disk submersible permanent magnet synchronous motor of the present invention;
FIG. 9 is a schematic diagram of a rotor disk in an axial flux multi-disk submersible permanent magnet synchronous motor of the present invention;
wherein, 1, the motor head seat; 2. a stator; 3. a rotor; 4. a motor tailstock; 2-1, a shell; 2-2, stator disc; 2-3, positioning sleeve; 2-4, a bearing sleeve; 2-5, check ring; 3-1, a main shaft; 3-2, a bearing; 3-3, a rotor disc; 3-4, fixing pieces.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an axial magnetic flux multi-disc type submersible permanent magnet synchronous motor, which is used for solving the problems in the prior art and improving the torque density of the submersible motor.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 9, the present embodiment provides an axial flux multi-disc submersible permanent magnet synchronous motor, which includes a casing 2-1, a main shaft 3-1, an oil circulation passage and three motor units.
Wherein the shell 2-1 is cylindrical; one end of the casing 2-1, which is close to the first end of the main shaft 3-1, is provided with a motor headstock 1, the motor headstock 1 is used for connecting a motor protector and a power cable plug, the other end of the casing 2-1 is provided with a motor tailstock 4, and the motor tailstock 4 is used for connecting other motors or anchors.
The main shaft 3-1 is in running fit with the shell 2-1, and the main shaft 3-1 is coaxial with the shell 2-1; the main shaft 3-1 is a hollow shaft, and the hollow part of the main shaft 3-1 is used as an oil passing channel; the first end of the main shaft 3-1 is provided with an opening, and the opening of the first end of the main shaft 3-1 is used for being communicated with the interior of the external motor protector, namely the oil passing channel is communicated with the interior of the external motor protector; specifically, the axial magnetic flux multi-disc type submersible permanent magnet synchronous motor of the embodiment is internally filled with motor oil for lubrication and heat conduction, and the external motor protector is internally filled with motor oil for compensating the oil quantity in the motor, so that the oil passing channel is communicated with the external motor protector, namely, the motor oil in the motor is communicated with the motor oil in the motor protector, and the motor protector can play a role in compensating the oil quantity in the motor.
All the motor units are arranged at intervals along the axial direction of the main shaft 3-1, each motor unit comprises a plurality of stator discs 2-2 arranged at intervals along the axial direction of the main shaft 3-1 and a plurality of rotor discs 3-3 arranged at intervals along the axial direction of the main shaft 3-1, each rotor disc 3-3 is positioned between two adjacent stator discs 2-2, and the stator discs 2-2 are positioned at the end parts of the motor units or between the two adjacent rotor discs 3-3; a gap is arranged between the rotor disc 3-3 and the adjacent stator disc 2-2; the stator disc 2-2 is fixedly connected with the shell 2-1, the rotor disc 3-3 is fixedly sleeved on the main shaft 3-1, and the stator disc 2-2 and the rotor disc 3-3 are coaxial with the main shaft 3-1; permanent magnets are arranged on two sides of the rotor disc 3-3, and coils are symmetrically arranged on two sides of the stator disc 2-2; two groups of coils adjacent to the rotor disc 3-3 inside the two stator discs 2-2 generate magnetic fields to interact with magnetic pole magnetic fields at two sides of the rotor 3 so as to drive the rotor disc 3-3 to rotate. The main magnetic circuit of the motor is an axial series magnetic circuit, and the direction of the magnetic circuit is as follows: a pole of the permanent magnet starts to pass through an air gap between the permanent magnet and the stator 2 and pass through a winding of the stator 2 along the axial direction, then passes through an air gap between the stator 2 and the permanent magnet on the other side, passes through the permanent magnet … … and finally is closed in a yoke part of the rotor 3.
It should be noted that the specific number of motor units and the specific number of stator discs 2-2 and rotor discs 3-3 in each motor unit may be adaptively adjusted according to actual needs.
The oil circulation channel comprises an oil passing channel arranged in the main shaft 3-1 and a plurality of oil throwing holes arranged on the main shaft 3-1, wherein two adjacent stator discs 2-2 and a rotor disc 3-3 positioned between the two adjacent stator discs 2-2 form a power unit, and gaps in each power unit are communicated with the oil passing channel through at least one oil throwing hole; the gap in any power unit is communicated with the gap in the adjacent power unit through a stator 2 oil channel, and the stator 2 oil channel is arranged in a stator disc 2-2 and is close to the inner wall of a shell 2-1; the first end of the main shaft 3-1 extends out of the casing 2-1, the oil passage is provided with an opening at the second end of the main shaft 3-1, the main shaft 3-1 is also provided with an oil return hole, the oil return hole communicates the oil passage with the space in the casing 2-1, and all motor units are positioned between the oil return hole and the opening.
A plurality of bearings 3-2 are arranged on the main shaft 3-1 at intervals along the axial direction, each motor unit is positioned between two adjacent bearings 3-2, a bearing sleeve 2-4 is fixedly arranged in the machine shell 2-1 corresponding to each bearing 3-2, the inner ring of the bearing 3-2 is fixedly connected with the main shaft 3-1, the outer ring of the bearing 3-2 is fixedly connected with the inner wall of the bearing sleeve 2-4, and the bearing sleeve 2-4 is fixed by adopting a retainer ring 2-5. The bearing sleeve 2-4 is provided with a through hole close to the inner wall of the shell 2-1, and the length direction of the through hole is parallel to the axial direction of the main shaft 3-1. The through holes in the bearing housing 2-4 serve as part of an oil circulation channel for facilitating the flow of cooling oil from one motor unit to the next. The casing 2-1 is provided with a locating sleeve 2-3 corresponding to the stator 2, and the locating sleeve 2-3 is provided with oil holes communicated with the oil channels of the adjacent stators 2.
In the present embodiment, the stator 2 includes a housing 2-1, a stator plate 2-2 and a positioning sleeve 2-3; coils are arranged on two sides of the stator disc 2-2, the two sides are symmetrically arranged, and the current directions of the coils which are coaxial on the two sides are the same; the positioning sleeve 2-3 is used for fixing the stator plates 2-2 and adjusting the distance between the stator plates 2-2.
The rotor 3 comprises a main shaft 3-1, a rotor disc 3-3 and a fixing piece 3-4 on the main shaft 3-1 for fixing the bearing 3-2 and the rotor disc 3-3; the bearing 3-2 and the rotor discs 3-3 are arranged on the main shaft 3-1, the main shaft 3-1 is provided with a bearing 3-2 positioning groove and a rotor disc 3-3 positioning groove which are respectively used for positioning and fixing the bearing 3-2 and the rotor disc 3-3, the center of the main shaft 3-1 is provided with an oil passing channel which is used as an oil circulation main channel, and the outer circle of the main shaft 3-1 is provided with a plurality of oil throwing holes which are used as motor oil outlets; permanent magnets are respectively mounted on two sides of the rotor disc 3-3, the directions of the poles of the permanent magnets N, S coaxial on the two sides are consistent, holes can be formed in the rotor disc 3-3, a whole permanent magnet is mounted, the length of the permanent magnet is twice that of the permanent magnet mounted on the two sides, the thickness of the rotor disc 3-3 is increased, and magnetic conduction or non-magnetic conduction materials are selected for the visual electromagnetic design of the rotor disc 3-3; the fixing member 3-4 in this embodiment adopts a C-shaped retainer ring, and may also adopt a structure such as a retainer ring for a standard shaft, a half ring, or the like as the fixing member 3-4.
In the embodiment, the bearings 3-2 are arranged between two adjacent unit motors to improve the radial positioning precision of the stator and the rotor 3, avoid the sweeping of bores, and simultaneously, the bearings 3-2 are righted to play a role in axially positioning the rotor 3.
In this embodiment, the casing 2-1 is filled with motor oil for lubrication of the part of the bearing 3-2 and heat dissipation of the stator and the rotor 3, the rotor disc 3-3 drives the motor oil to rotate when rotating, the motor oil flows to the outer side of the stator 2 under the action of centrifugal force, a pressure field with low pressure near the main shaft 3-1 and high pressure near the casing 2-1 is formed, the motor oil flows out from an oil throwing hole of the main shaft 3-1 into the space between the bearing 3-2 and the stator 2 and the rotor 3, the motor oil is driven to rotate by the rotor disc 3-3, flows through oil circulation channels of all components of the stator 2 out from the oil channels and oil through holes of the stator 2, the motor oil is subjected to heat exchange with the casing 2-1 in the flowing process of the oil channels and the oil through holes of the stator 2-1 and the contacting process with the inner wall of the casing 2-1, the cooled motor oil enters the main shaft 3-1 from bottom end openings of oil return holes and oil through the bottom ends of the main shaft 3-1, and the oil throwing holes of the main shaft 3-1 again enters the space between the stator 2 and the rotor 3, and the steps are repeated, and thus lubrication of the part of the bearing 3-2 and heat dissipation of the stator and the stator are realized. The stator disc 2-2 and the rotor disc 3-3 have large contact areas with the motor oil, and the motor oil has large flow speed in a forced convection heat dissipation mode, so that heat can be rapidly taken away, and a higher electromagnetic load can be selected when the electromagnetic design is performed.
In the description of the present invention, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (2)
1. An axial flux multi-disc submersible permanent magnet synchronous motor, comprising:
the shell is cylindrical;
the main shaft is in running fit with the shell and is coaxial with the shell;
at least two motor units arranged at intervals along the axial direction of the main shaft, each motor unit comprising a plurality of stator disks arranged at intervals along the axial direction of the main shaft and a plurality of rotor disks arranged at intervals along the axial direction of the main shaft, each rotor disk being located between two adjacent stator disks, the stator disks being located at the ends of the motor unit or between two adjacent rotor disks; a gap is formed between the rotor disc and the adjacent stator disc; the stator disc is fixedly connected with the shell, the rotor disc is fixedly sleeved on the main shaft, and the stator disc and the rotor disc are coaxial with the main shaft; permanent magnets are arranged on two sides of the rotor disc, and coils are symmetrically arranged on two sides of the stator disc;
the oil circulation channel comprises an oil passing channel arranged in the main shaft and a plurality of oil throwing holes arranged on the main shaft, two adjacent stator discs and the rotor disc positioned between the two adjacent stator discs form a power unit, and the gap in each power unit is communicated with the oil passing channel through at least one oil throwing hole; the gap in any one power unit is communicated with the gap in the adjacent power unit through a stator oil channel, and the stator oil channel is arranged in the stator disc and is close to the inner wall of the shell; the first end of the main shaft extends out of the shell, the oil passing channel is provided with an opening at the second end of the main shaft, the main shaft is also provided with an oil return hole, the oil return hole communicates the oil passing channel with the space in the shell, and all the motor units are positioned between the oil return hole and the opening;
a plurality of bearings are arranged on the main shaft at intervals along the axial direction, each motor unit is positioned between two adjacent bearings, a bearing sleeve is fixedly arranged in the machine shell corresponding to each bearing, an inner ring of each bearing is fixedly connected with the main shaft, and an outer ring of each bearing is fixedly connected with the inner wall of each bearing sleeve; the bearing sleeve is provided with a through hole close to the inner wall of the shell, and the length direction of the through hole is parallel to the axial direction of the main shaft;
the main shaft is a hollow shaft, and the hollow part of the main shaft is used as the oil passing channel; the first end of the main shaft is open and communicated with the inside of the motor protector; the shell is provided with a locating sleeve corresponding to the stator, and an oil through hole communicated with the adjacent stator oil channel is arranged in the locating sleeve.
2. The axial flux multi-disc submersible permanent magnet synchronous motor of claim 1, wherein: the motor is characterized in that a motor head seat is arranged at one end of the casing, which is close to the first end of the main shaft, the motor head seat is used for being connected with a motor protector and a power cable plug, a motor tail seat is arranged at the other end of the casing, and the motor tail seat is used for being connected with other motors or anchors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310786909.3A CN116885876B (en) | 2023-06-29 | 2023-06-29 | Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310786909.3A CN116885876B (en) | 2023-06-29 | 2023-06-29 | Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116885876A CN116885876A (en) | 2023-10-13 |
| CN116885876B true CN116885876B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310786909.3A Active CN116885876B (en) | 2023-06-29 | 2023-06-29 | Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor |
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| CN (1) | CN116885876B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111313641A (en) * | 2020-04-17 | 2020-06-19 | 仪坤动力科技（上海）有限公司 | Multi-unit disc type motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6394907B2 (en) * | 2015-05-12 | 2018-09-26 | 株式会社豊田自動織機 | Electric compressor |
| US11916450B2 (en) * | 2020-04-08 | 2024-02-27 | Halliburton Energy Services, Inc. | Axial flux submersible electric motor |
| US11970923B2 (en) * | 2021-03-30 | 2024-04-30 | Halliburton Energy Services, Inc. | Downhole electrical generator |
-
2023
- 2023-06-29 CN CN202310786909.3A patent/CN116885876B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111313641A (en) * | 2020-04-17 | 2020-06-19 | 仪坤动力科技（上海）有限公司 | Multi-unit disc type motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116885876A (en) | 2023-10-13 |
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