CN219718007U - Permanent magnet hybrid bearing rotor system of fuel cell hydrogen circulating pump - Google Patents
Permanent magnet hybrid bearing rotor system of fuel cell hydrogen circulating pump Download PDFInfo
- Publication number
- CN219718007U CN219718007U CN202320240504.5U CN202320240504U CN219718007U CN 219718007 U CN219718007 U CN 219718007U CN 202320240504 U CN202320240504 U CN 202320240504U CN 219718007 U CN219718007 U CN 219718007U
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- permanent magnet
- ring
- inner ring
- bearing
- magnet
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 17
- 239000001257 hydrogen Substances 0.000 title claims abstract description 17
- 239000000446 fuel Substances 0.000 title claims abstract description 12
- 230000005415 magnetization Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a permanent magnet hybrid bearing rotor system of a fuel cell hydrogen circulating pump, which is characterized in that a rotor shaft is sleeved on an inner ring of a magnet base through a ball bearing, the magnet base is supported and connected with a magnet, an inner ring boss is arranged on the inner ring of the magnet base, a permanent magnet bearing outer ring sleeved on the inner ring of the magnet base is limited between the inner ring boss and the lower end of an outer ring of the ball bearing, an outer ring boss is arranged on the rotor shaft, and a permanent magnet bearing inner ring sleeved on the rotor shaft is limited between the outer ring boss and the lower end of the inner ring of the ball bearing. In the use of the paired axial motors, the ball bearings and the permanent magnet bearings are combined in a layout mode, the structure is simple and compact, the larger axial force of a single disc motor to the rotor and the ball bearings is fully counteracted, the radial bearing function is achieved, and the stability, the overall structure and the reliability of the product are greatly improved.
Description
Technical Field
The utility model relates to a rotor, in particular to a permanent magnet hybrid bearing rotor system of a fuel cell hydrogen circulating pump.
Background
The driving motor of the hydrogen circulation pump is mainly divided into two types, one is a radial motor and the other is an axial motor. The magnetic pull force of the radial motor is radial, and the magnetic pull force counteracts each other along the circumference, namely the resultant force of the magnetic pull force is zero, but the axial size of the radial motor is larger than that of the axial motor. And the axial motor has axial magnetic pulling force, large torque and small axial size.
From the current market, hydrogen circulation machines are mainly vortex pumps. The hydrogen circulating pump of the axial motor is a structure mainly adopted in the current hydrogen pump products. The axial force of the hydrogen circulating pump is large, the failure of the traditional bearing system is accelerated, and the service life of the traditional bearing is short; in addition, since the disk motor has a larger outer diameter, the air between the stator and the rotor is relatively worse, so that a relatively large axial force fluctuation exists, a greater challenge is given to the bearing for supporting, and the reliability of the bearing system is reduced.
Disclosure of Invention
The utility model provides a permanent magnet hybrid bearing rotor system of a fuel cell hydrogen circulation pump, which has a simple structure and can effectively solve the problem that the axial force is large and affects the reliability and the service life of a bearing.
The technical scheme adopted by the utility model is as follows: the utility model provides a fuel cell hydrogen circulating pump permanent magnetism hybrid bearing rotor system, includes rotor shaft, magnet base, magnet and impeller, its characterized in that: the rotor shaft is sleeved on an inner ring of the magnet base through a ball bearing, the magnet base is supported and connected with a magnet, an inner ring boss is arranged on an inner ring of the magnet base, a permanent magnet bearing outer ring sleeved on the inner ring of the magnet base is limited between the inner ring boss and the lower end of the ball bearing outer ring, an outer ring boss is arranged on the rotor shaft, a permanent magnet bearing inner ring sleeved on the rotor shaft is limited between the outer ring boss and the lower end of the ball bearing inner ring, radial gaps of the inner ring and the outer ring of the permanent magnet bearing are correspondingly arranged, the outer ring of the permanent magnet bearing is composed of an upper outer ring permanent magnet ring, a middle outer ring permanent magnet ring and a lower outer ring permanent magnet ring, the magnetization direction of the upper outer ring permanent magnet ring and the lower outer ring permanent magnet ring is towards the radial inner ring of the permanent magnet bearing, and the magnetization direction of the middle inner ring permanent magnet ring is towards the radial outer side of the permanent magnet bearing inner ring; the middle inner ring permanent magnet ring and the middle outer ring permanent magnet ring are provided with overlapping sections in the axial direction.
The upper end of the ball bearing is connected with the rotor shaft through a screw and is pressed and positioned by the gland.
The magnet base is provided with a magnet mounting step, and the magnet is connected to the magnet base through gluing or screw locking support.
And a bushing sleeved on the rotor shaft is arranged between the outer ring boss and the permanent magnet inner ring.
And the rotor shaft is sleeved with a bushing, and the permanent magnet inner ring is positioned between the bushing and the lower end of the ball bearing inner ring.
In the use of the paired axial motors, the ball bearing and the permanent magnet bearing are combined in an inner ring and an outer ring, so that the structure is simple and compact, the larger axial force of a single disc motor to the rotor and the ball bearing is fully counteracted, the radial bearing function is realized, and the stability, the integral structure and the reliability of the bearing of the product are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of the inner and outer ring structures of the permanent magnet bearing of the present utility model.
In the figure: the axial motor comprises an axial motor stator 1, a rotor shaft 2, an outer ring boss 3, screws 4, a gland 5, a ball bearing 6, a magnet base 7, an inner ring boss 8, a magnet 9, a permanent magnet bearing outer ring 10, an upper outer ring permanent magnet ring 11, a middle outer ring permanent magnet ring 12, a lower outer ring permanent magnet ring 13, a permanent magnet bearing inner ring 14, an upper inner ring permanent magnet ring 15, a middle inner ring permanent magnet ring 16, a lower inner ring permanent magnet ring 17, an impeller 18 and a back plate 19.
Detailed Description
Further description is provided below with reference to the accompanying drawings.
Fig. 1 and 2 show: a permanent magnet hybrid bearing rotor system of a fuel cell hydrogen circulation pump comprises a rotor shaft 2, a screw 4, a gland 5, a ball bearing 6, a magnet base 7, a magnet 9, a permanent magnet bearing outer ring 10 and a permanent magnet bearing inner ring 14. The rotor shaft 2 is sleeved on the inner ring of the magnet base 7 through the ball bearing 6, the upper end of the ball bearing 6 is connected with the rotor shaft 2 through the screw 4, and the rotor shaft is pressed and positioned by the pressing cover 5. The magnet base 7 is supported and connected with the magnet 9, an inner ring boss 8 is arranged on an inner ring of the magnet base, a permanent magnet bearing outer ring 10 sleeved on an inner ring of the magnet base is limited between the inner ring boss 8 and the lower end of an outer ring of the ball bearing 6, an outer ring boss 3 is arranged on the rotor shaft 2, a permanent magnet bearing inner ring 14 sleeved on the rotor shaft is limited between the outer ring boss 3 and the lower end of the inner ring of the ball bearing 6, radial gaps of the inner ring and the outer ring of the permanent magnet bearing are correspondingly arranged, the permanent magnet bearing outer ring 10 is composed of an upper outer ring permanent magnet ring 11, a middle outer ring permanent magnet ring 11, a lower outer ring permanent magnet ring 12 and a lower outer ring permanent magnet ring 13, the magnetization direction of the upper outer ring permanent magnet ring faces the radial inner side of the permanent magnet bearing outer ring, the permanent magnet bearing inner ring 14 is composed of an upper inner ring permanent magnet ring 15, a middle outer ring permanent magnet ring 16 and a lower inner ring permanent magnet ring 17, the magnetization direction of the middle inner ring permanent magnet ring faces the radial outer side of the permanent magnet bearing; the middle inner ring permanent magnet ring and the middle outer ring permanent magnet ring are provided with overlapping sections in the axial direction.
In this embodiment, a magnet mounting step is provided on the magnet base, and the magnet is linked to the magnet base through an adhesive joint or a screw locking support.
In this embodiment, the rotor system is arranged corresponding to the stator 1 of the axial motor, and the magnet base 7 is in pressure connection with the back plate 19 sleeved on the magnet base and is connected with the impeller 18 through screw locking, which is disclosed in the prior patent of the applicant.
In this embodiment, the extent of the overlapping sections of the inner and outer rings of the permanent magnet bearing in the axial direction can be adjusted via the bushing. The bushing support adjustment can also be directly adopted.
The arrangement of the inner ring, the outer ring and the ball bearing of the permanent magnet bearing of the system is shown in the figure, the permanent magnet bearing is formed by the inner ring and the outer ring of the permanent magnet bearing, and the axial tensile force (tensile force of the axial motor stator) of the axial motor stator and the axial tensile force (tensile force of the axial motor stator) of the rotor shaft are counteracted by utilizing the axial bearing force (tensile force of the permanent magnet bearing) generated by the permanent magnet bearing. The outer ring of the permanent magnet bearing is fixed on the inner ring of the rotating magnet base, the inner ring of the permanent magnet bearing is fixed on the rotor shaft, and finally the inner ring of the permanent magnet bearing is regulated by the bushing. When the magnetic tension of the permanent magnet bearing is designed, the magnetic tension is slightly smaller than that of the axial motor, the ball bearing bears the rest part, the whole rotor shaft is pre-tensioned, the axial rigidity of the rotor shaft is ensured, the axial stress of the ball bearing is greatly reduced, and the reliability of the whole system is improved. In addition, the inner ring and the outer ring of the permanent magnet bearing have enough bearing capacity in the radial direction and enough axial length, meanwhile, the rotor shaft swings minimally, the permanent magnet bearing does not need a control system, the permanent magnet suspension has no extra friction loss, no eddy current loss generated by magnetic field change, the loss mainly comes from a single ball bearing (and the stress is smaller, the loss is lower than that of the conventional application), and the performance of the product and the service life of the bearing are improved as a whole.
Claims (5)
1. The utility model provides a fuel cell hydrogen circulating pump permanent magnetism hybrid bearing rotor system, includes rotor shaft, magnet base, magnet and impeller, its characterized in that: the rotor shaft is sleeved on an inner ring of the magnet base through a ball bearing, the magnet base is supported and connected with a magnet, an inner ring boss is arranged on an inner ring of the magnet base, a permanent magnet bearing outer ring sleeved on the inner ring of the magnet base is limited between the inner ring boss and the lower end of the ball bearing outer ring, an outer ring boss is arranged on the rotor shaft, a permanent magnet bearing inner ring sleeved on the rotor shaft is limited between the outer ring boss and the lower end of the ball bearing inner ring, radial gaps of the inner ring and the outer ring of the permanent magnet bearing are correspondingly arranged, the outer ring of the permanent magnet bearing is composed of an upper outer ring permanent magnet ring, a middle outer ring permanent magnet ring and a lower outer ring permanent magnet ring, the magnetization direction of the upper outer ring permanent magnet ring and the lower outer ring permanent magnet ring is towards the radial inner ring of the permanent magnet bearing, and the magnetization direction of the middle inner ring permanent magnet ring is towards the radial outer side of the permanent magnet bearing inner ring; the middle inner ring permanent magnet ring and the middle outer ring permanent magnet ring are provided with overlapping sections in the axial direction.
2. The fuel cell hydrogen circulation pump permanent magnet hybrid bearing rotor system according to claim 1, characterized in that: the upper end of the ball bearing is connected with the rotor shaft through a screw and is pressed and positioned by the gland.
3. The fuel cell hydrogen circulation pump permanent magnet hybrid bearing rotor system according to claim 1, characterized in that: the magnet base is provided with a magnet mounting step, and the magnet is connected to the magnet base through gluing or screw locking support.
4. The fuel cell hydrogen circulation pump permanent magnet hybrid bearing rotor system according to claim 1, characterized in that: and a bushing sleeved on the rotor shaft is arranged between the outer ring boss and the permanent magnet inner ring.
5. The fuel cell hydrogen circulation pump permanent magnet hybrid bearing rotor system according to claim 1, characterized in that: and the rotor shaft is sleeved with a bushing, and the permanent magnet inner ring is positioned between the bushing and the lower end of the ball bearing inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240504.5U CN219718007U (en) | 2023-02-17 | 2023-02-17 | Permanent magnet hybrid bearing rotor system of fuel cell hydrogen circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240504.5U CN219718007U (en) | 2023-02-17 | 2023-02-17 | Permanent magnet hybrid bearing rotor system of fuel cell hydrogen circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219718007U true CN219718007U (en) | 2023-09-19 |
Family
ID=87998693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320240504.5U Active CN219718007U (en) | 2023-02-17 | 2023-02-17 | Permanent magnet hybrid bearing rotor system of fuel cell hydrogen circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219718007U (en) |
-
2023
- 2023-02-17 CN CN202320240504.5U patent/CN219718007U/en active Active
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