CN216564805U - Magnetic thrust bearing of submersible motor - Google Patents
Magnetic thrust bearing of submersible motor Download PDFInfo
- Publication number
- CN216564805U CN216564805U CN202123280804.6U CN202123280804U CN216564805U CN 216564805 U CN216564805 U CN 216564805U CN 202123280804 U CN202123280804 U CN 202123280804U CN 216564805 U CN216564805 U CN 216564805U
- Authority
- CN
- China
- Prior art keywords
- thrust bearing
- thrust
- center
- bearing
- disc
- 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.)
- Active
Links
Images
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
A magnetic thrust bearing of a submersible motor belongs to the technical field of submersible motors. The thrust bearing comprises a thrust bearing thrust disc and a thrust bearing base, and is characterized in that the thrust bearing thrust disc is in a disc form with a hollow center, a permanent magnet is arranged in the center of the thrust bearing thrust disc, a plurality of fan-shaped metal blocks are uniformly distributed in the thrust bearing base in a circumferential manner, a bearing gap is formed between each fan-shaped metal block and the thrust bearing thrust disc, an electromagnet is arranged in the center of the thrust bearing base, and the center of the electromagnet is coaxial with the center of the permanent magnet and is oppositely arranged on the same pole side. The utility model can reduce the influence of the axial force received by the submersible motor on the bearing clearance, so that a water film is smoothly formed in the bearing clearance.
Description
Technical Field
The utility model belongs to the technical field of submersible motors, and particularly relates to a magnetic thrust 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, the deep well submersible pump is arranged above the submersible motor, and a downward axial force can be generated in the running process of the motor and the water pump, so that a thrust bearing needs to be arranged at the bottom of the submersible motor to bear the corresponding axial force. Because the submersible motor is of an internal water-filling structure, the thrust bearing can only select a water-lubricated sliding bearing, and a water film can be formed in a bearing gap in the running process to play a lubricating role. When the axial force in the operation process is too large, the bearing clearance in the thrust bearing is reduced, a water film cannot be formed in the clearance, the water lubrication effect cannot be achieved, the thrust bearing is subjected to dry grinding, the temperature of the bearing is rapidly increased, and the bearing is possibly burnt finally.
Disclosure of Invention
Aiming at the problems, the utility model makes up the defects of the prior art and provides a magnetic thrust bearing of a submersible motor; the utility model can reduce the influence of the axial force received by the submersible motor on the bearing clearance, and enables the bearing clearance to smoothly form a water film.
In order to achieve the purpose, the utility model adopts the following technical scheme.
The utility model provides a magnetic thrust bearing of a submersible motor, which comprises a thrust bearing thrust disc and a thrust bearing base and is characterized in that the thrust bearing thrust disc is in a disc form with a hollow center, a permanent magnet is arranged in the center of the thrust bearing thrust disc, a plurality of fan-shaped metal blocks are uniformly distributed in the thrust bearing base in the circumferential direction, a bearing gap is formed between each fan-shaped metal block and the thrust bearing thrust disc, an electromagnet is arranged in the center of the thrust bearing base, and the center of the electromagnet is coaxial with the center of the permanent magnet and is oppositely arranged on the same side.
Furthermore, a temperature measuring sensor is arranged on the thrust bearing base.
The utility model has the beneficial effects.
The utility model can reduce the influence of axial force on the bearing gap through the interaction of the permanent magnet and the electromagnet arranged in the bearing, so that a water film is smoothly formed in the bearing gap, the rapid temperature rise caused by dry grinding is avoided, and the service life is 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 sectional view of the present invention after installation.
FIG. 2 is a top view of the thrust bearing base portion of the present invention.
The labels in the figure are: the thrust bearing comprises a thrust bearing thrust disc 1, a thrust bearing base 2, a permanent magnet 3, a fan-shaped metal block 4, a bearing gap 5, an electromagnet 6, a temperature measuring sensor 7 and a rotor shaft 8.
Detailed Description
The embodiment provides a magnetic thrust bearing of a submersible motor, which comprises a thrust bearing thrust disc 1 and a thrust bearing base 2.
The thrust bearing thrust plate 1 is in a disc form with a hollow center and is arranged at the lower end of a rotor shaft 8 of the submersible motor. A permanent magnet 3 is provided in the center of the thrust disk 1 of the thrust bearing.
A plurality of fan-shaped metal blocks 4 are evenly distributed on the circumference in the thrust bearing base 2, a bearing gap 5 is formed between each fan-shaped metal block 4 and the thrust bearing thrust disk 1, and the fan-shaped metal blocks 4 and the thrust bearing thrust disk 1 form the effect of a thrust bearing.
An electromagnet 6 is provided at the center of the thrust bearing base 2, and the center of the electromagnet 6 is coaxial with the center of the permanent magnet 3 and is disposed opposite to the same pole.
The thrust bearing base 2 is provided with a temperature sensor 7 for measuring the temperature near the thrust disc 1 and the fan-shaped metal block 4 of the thrust bearing.
The working principle is as follows.
During the operation of the submersible motor, when the axial force is too large, the bearing gap 5 between the thrust bearing thrust disc 1 and the fan-shaped metal block 4 becomes small, and the gap cannot form a water film to play a role of water lubrication, so that the thrust bearing thrust disc 1 and the fan-shaped metal block 4 are mutually dry-ground, and the overall temperature is increased rapidly.
The temperature data that temperature sensor 7 gathered can grow, installs the electro-magnet 6 on thrust bearing base 2 through dive motor control system control this moment, increases electro-magnet 6's magnetic field intensity, and the repulsion force that homopolar repulsion mutually increases between electro-magnet 6 and the permanent magnet 3, has offset the decurrent axial force of rotor shaft 8, makes bearing clearance 5 resume normally to can form the water film in bearing clearance 5, make dive motor normal operating.
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 (2)
1. The utility model provides a submerged motor magnetism thrust bearing, includes thrust bearing thrust disc (1) and thrust bearing base (2), its characterized in that, thrust bearing thrust disc (1) is the disc form of center fretwork be provided with permanent magnet (3) in the center of thrust bearing thrust disc (1), it has many fan-shaped metal blocks (4) to be the circumference equipartition in thrust bearing base (2), fan-shaped metal block (4) with there is bearing clearance (5) between thrust bearing thrust disc (1), the center of thrust bearing base (2) is provided with electro-magnet (6), the center of electro-magnet (6) with the center of permanent magnet (3) is coaxial and set up relatively with the side of the same side.
2. A submersible motor magnetic thrust bearing according to claim 1, characterized in that the thrust bearing base (2) is provided with a temperature sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123280804.6U CN216564805U (en) | 2021-12-24 | 2021-12-24 | Magnetic thrust bearing of submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123280804.6U CN216564805U (en) | 2021-12-24 | 2021-12-24 | Magnetic thrust bearing of submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216564805U true CN216564805U (en) | 2022-05-17 |
Family
ID=81556112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123280804.6U Active CN216564805U (en) | 2021-12-24 | 2021-12-24 | Magnetic thrust bearing of submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216564805U (en) |
-
2021
- 2021-12-24 CN CN202123280804.6U patent/CN216564805U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102257265B (en) | A hydroelectric turbine comprising a passive brake and method of operation | |
| CN216564805U (en) | Magnetic thrust bearing of submersible motor | |
| CN113595309B (en) | Special motor for low-noise unmanned aerial vehicle | |
| CN205190530U (en) | No fulcrum, zero friction permanent magnetism suspension bearing | |
| CN107516990B (en) | Dust collector motor and dust collector | |
| CN201090491Y (en) | Magnetic suspension axial flow compressor | |
| CN2769570Y (en) | Linear NEOFLON FEP resin high-temperature resisting magnetive driving pump | |
| CN201779144U (en) | Permanent magnet suspension thrust bearing | |
| CN207111711U (en) | A kind of coaxial electromagnet structure of thrust magnetic bearing | |
| CN105863926A (en) | Magnetic levitation water turbine | |
| CN201726242U (en) | Submersible motor magnetic suspension thrust bearing | |
| CN112483455A (en) | Method for improving transmission efficiency of multistage immersed pump and suspended multistage immersed pump | |
| CN210509989U (en) | Wind power main shaft system with permanent magnetic suspension bearing | |
| CN201059280Y (en) | Improved type water pump | |
| CN209467311U (en) | Magnetic suspension rudder peculiar to vessel system | |
| CN208417274U (en) | A kind of ceramic bearing of new type superthin wall high abrasion | |
| CN217036954U (en) | High-speed motor supported by magnetic suspension bearing | |
| CN220726866U (en) | Suspension bearing mechanism | |
| CN204852007U (en) | Big load speed bearing structure | |
| CN220890522U (en) | Floating anti-clamping oil gas recovery vacuum pump | |
| CN201486924U (en) | Magnetic suspension bearing supporting device of horizontal pump | |
| CN221227290U (en) | Hybrid magnetic suspension bearing assembly for high-speed motor | |
| CN101852212A (en) | Magnetic suspension wind submerged pump | |
| CN110670183B (en) | Mixed magnetic suspension bearing for driving spindle of rotor ultra-high speed motor | |
| CN104214218A (en) | Method and structure capable of balancing static loads in magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |