CN216564752U - Magnetic guide bearing of submersible motor - Google Patents
Magnetic guide bearing of submersible motor Download PDFInfo
- Publication number
- CN216564752U CN216564752U CN202123279420.2U CN202123279420U CN216564752U CN 216564752 U CN216564752 U CN 216564752U CN 202123279420 U CN202123279420 U CN 202123279420U CN 216564752 U CN216564752 U CN 216564752U
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- guide bearing
- rotor shaft
- bearing
- permanent magnet
- shaft sleeve
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
A magnetic guide bearing of a submersible motor belongs to the technical field of submersible motors. The guide bearing comprises a guide bearing body and is characterized in that the guide bearing body is a cylindrical body with a hollow middle part, a plurality of outer grooves are uniformly distributed on the outer wall of the guide bearing body along the axial direction of the guide bearing body, a first permanent magnet is correspondingly arranged in each outer groove, a rotor shaft sleeve is arranged in the middle of the guide bearing body in a matching mode, the rotor shaft sleeve is a cylindrical body with a hollow middle part, a plurality of inner grooves are uniformly distributed on the inner wall of the rotor shaft sleeve along the axial direction of the rotor shaft sleeve, and a second permanent magnet is correspondingly arranged in each inner groove. The utility model can effectively reduce the radial displacement of the rotor shaft, ensure the bearing clearance between the guide bearing and the rotor shaft sleeve, and prolong the service life of the bearing and other parts.
Description
Technical Field
The utility model belongs to the technical field of submersible motors, and particularly relates to a magnetic guide bearing of a submersible motor.
Background
The well submersible motor is usually matched with a deep well submersible pump and is used for deep well underground water taking. The deep well submersible pump and the submersible motor for the well are both of a vertical structure, a guide bearing is installed in the submersible motor, the guide bearing is of a sleeve structure and is installed on the periphery of a rotor shaft sleeve on a rotor shaft, and the guide bearing is used for ensuring that the rotor shaft cannot generate radial displacement. Because the submersible motor is of a water-filled structure, a guide bearing in the motor is a water-lubricated sliding bearing, a bearing gap is formed between the guide bearing and a rotor shaft sleeve on a rotor shaft, and water flows into the bearing gap to form a water film, so that the submersible motor plays a lubricating role. Because the submersible motor cannot be absolutely vertical when being installed, the rotor shaft can displace in a certain direction in the running process of the motor, the bearing gap in the direction in the guide bearing is reduced, a water film cannot be formed in the gap, the water lubrication effect cannot be achieved, the bearing is subjected to dry grinding, the temperature of the bearing rises rapidly, the bearing can be burnt finally, the radial displacement of the rotor can cause the vibration aggravation in the running process of the motor, and the motor and water pump parts can be damaged.
Disclosure of Invention
Aiming at the problems, the utility model makes up the defects of the prior art and provides a magnetic guide bearing of a submersible motor; the utility model can effectively reduce the radial displacement of the rotor shaft, ensure the bearing clearance between the guide bearing and the rotor shaft sleeve, and prolong the service life of the bearing and other parts.
In order to achieve the purpose, the utility model adopts the following technical scheme.
The utility model provides a magnetic guide bearing of a submersible motor, which comprises a guide bearing body and is characterized in that the guide bearing body is a cylindrical body with a hollow middle part, a plurality of outer grooves are uniformly distributed on the outer wall of the guide bearing body at the circumference, each outer groove is formed along the axial direction of the guide bearing body, a first permanent magnet is correspondingly arranged in each outer groove, a rotor shaft sleeve is arranged in the middle of the guide bearing in a matching manner, the rotor shaft sleeve is a cylindrical body with a hollow middle part, a plurality of inner grooves are uniformly distributed on the inner wall of the rotor shaft sleeve at the circumference, each inner groove is formed along the axial direction of the rotor shaft sleeve, and a second permanent magnet is correspondingly arranged in each inner groove.
Further, a bearing gap is formed between the guide bearing body and the rotor shaft sleeve.
Further, the homopolar sides of the first permanent magnet and the second permanent magnet are arranged oppositely.
The utility model has the beneficial effects.
According to the utility model, through the homopolar repulsion action between the first permanent magnet arranged in the guide bearing body and the second permanent magnet arranged in the rotor shaft sleeve, the radial displacement of the rotor shaft is effectively reduced, the bearing gap between the guide bearing and the rotor shaft sleeve is ensured, and the service lives of the bearing and other parts are prolonged.
Drawings
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
FIG. 1 is a side elevational view, partially in section, of the utility model as installed.
FIG. 2 is a sectional view of the novel assembled overhead structure
The labels in the figure are: the rotor comprises a bearing guide body 1, an outer groove 2, a first permanent magnet 3, a rotor shaft sleeve 4, an inner groove 5, a second permanent magnet 6, a bearing gap 7, a bearing guide seat 8 and a rotor shaft 9.
Detailed Description
Combine the attached drawing to show, this embodiment provides a dive motor magnetism and leads bearing, including leading bearing body 1, lead bearing body 1 and be the tube-shaped body of middle part fretwork, the circumference equipartition has a plurality of outer recesses 2 on the outer wall of leading bearing body 1, and every outer recess 2 all sets up along leading bearing body 1 axial, all corresponds in every outer recess 2 and is provided with first permanent magnet 3. The guide bearing body 1 is installed in a guide bearing seat 8 of the submersible motor in a matched mode, and the first permanent magnet 3 is clamped between the guide bearing seat 8 and the guide bearing body 1.
Lead the cooperation of bearing middle part and be provided with rotor axle sleeve 4, rotor axle sleeve 4 is the tube-shape body of middle part fretwork, and the circumference equipartition has a plurality of inner groovy 5 on rotor axle sleeve 4's the inner wall, and every inner groovy 5 all is seted up along 4 axial of rotor axle sleeve, all corresponds in every inner groovy 5 and is provided with second permanent magnet 6. The rotor shaft sleeve 4 is sleeved outside the rotor shaft 9 in a matching mode, and the second permanent magnet 6 is clamped between the rotor shaft 9 and the rotor shaft sleeve 4. A bearing gap 7 is arranged between the guide bearing body 1 and the rotor shaft sleeve 4.
The homopolar sides of the first permanent magnet 3 and the second permanent magnet 6 are arranged opposite to each other, and the displaced rotor shaft 9 can be restored to the original position by utilizing homopolar repulsion.
The working principle is as follows.
In the running process of the submersible motor, the rotor shaft 9 can displace towards a certain direction, the bearing gap 7 in the guide bearing body 1 in the direction becomes smaller, the distance between the first permanent magnet 3 and the second permanent magnet 6 in the direction becomes smaller, and the first permanent magnet 3 and the second permanent magnet 6 are arranged in a manner of homopolar opposition to each other, so that the mutual repulsive force is increased; the distance between the first permanent magnet 3 and the second permanent magnet 6 in the opposite direction is increased, and the repulsive force between the first permanent magnet 3 and the second permanent magnet 6 is reduced, so that the rotor shaft 9 is restored to the central position under the action of force, and the submersible motor is enabled to run normally.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (3)
1. The utility model provides a bearing is led to dive motor magnetism, is including leading bearing body (1), its characterized in that, lead bearing body (1) and be the tube-shape body of middle part fretwork, the circumference equipartition has a plurality of outer recesses (2) on the outer wall of leading bearing body (1), every outer recess (2) are all followed lead bearing body (1) axial and set up, every all correspond in outer recess (2) and be provided with first permanent magnet (3), it is provided with rotor axle sleeve (4) to lead the cooperation of bearing middle part, rotor axle sleeve (4) are the tube-shape body of middle part fretwork, the circumference equipartition has a plurality of grooves (5), every on the inner wall of rotor axle sleeve (4) inner grove (5) all follow rotor axle sleeve (4) axial is seted up, every all correspond in inner grove (5) and be provided with second permanent magnet (6).
2. A submersible motor magnetic guide bearing according to claim 1, characterized in that there is a bearing gap (7) between the guide bearing body (1) and the rotor bushing (4).
3. A submersible motor magnetic guide bearing according to claim 1, characterized in that the homopolar sides of the first permanent magnet (3) and the second permanent magnet (6) are arranged opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123279420.2U CN216564752U (en) | 2021-12-24 | 2021-12-24 | Magnetic guide bearing of submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123279420.2U CN216564752U (en) | 2021-12-24 | 2021-12-24 | Magnetic guide bearing of submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216564752U true CN216564752U (en) | 2022-05-17 |
Family
ID=81556871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123279420.2U Active CN216564752U (en) | 2021-12-24 | 2021-12-24 | Magnetic guide bearing of submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216564752U (en) |
-
2021
- 2021-12-24 CN CN202123279420.2U patent/CN216564752U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Magnetic guide bearing for submersible motor Effective date of registration: 20221111 Granted publication date: 20220517 Pledgee: China Construction Bank Corporation Shenyang Ronghui Sub branch Pledgor: SHENYANG ZHONGCHUANG GAOKE ENERGY SAVING MOTOR TECHNOLOGY CO.,LTD. Registration number: Y2022980021759 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |