CN219953971U

CN219953971U - Flywheel magnetic bearing

Info

Publication number: CN219953971U
Application number: CN202320755679.XU
Authority: CN
Inventors: 金晓益
Original assignee: Tongxiang Weier Bearing Co ltd
Current assignee: Tongxiang Weier Bearing Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-11-03
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a flywheel magnetic bearing, which belongs to the technical field of magnetic bearings and comprises a shell, wherein a rotating shaft is arranged in the shell, a superconductive stator is arranged on the outer wall of the rotating shaft, a stator iron core is arranged on the outer wall of the superconductive stator, a motor is fixedly arranged on the inner wall of the stator iron core, a limiting arc-shaped groove is formed in the shell, a convex plate is fixedly arranged on the outer wall of the upper end of the stator iron core, an upper cover is fixedly arranged at the upper end of the shell, a dust cover is arranged at the upper end of the upper cover, a mounting hole is formed in the dust cover, and a bolt is arranged in the mounting hole. From this, can realize guaranteeing firm connection between stator core and the casing, better circumstances emergence that avoids dust to pile up.

Description

Flywheel magnetic bearing

Technical Field

The utility model relates to a magnetic bearing, in particular to a flywheel magnetic bearing, and belongs to the technical field of magnetic bearings.

Background

The flywheel energy storage is to convert the high-speed rotation of the flywheel rotor driven by the electric energy motor into kinetic energy for charging by utilizing the inertia of the flywheel rotor, and the kinetic energy is converted into electric energy for discharging by the generator when needed. In order to increase the energy storage density, the energy storage flywheel generally needs to increase the weight of a rotor and increase the rotating speed, which makes demands on the supporting technology. The traditional rotor supporting mode is to use a mechanical bearing, but friction exists, lubrication and maintenance are needed, and in recent years, another mode, namely a magnetic bearing, is widely used, and the rotor supporting mode has the characteristics of no friction, no lubrication, long service life and the like.

The patent of present patent number (CN 216904553U) proposes a high-efficient flywheel magnetic bearing, its device has reduced the magnetic resistance on the outer magnetic ring of magnetic bearing iron core through increasing high magnetic conduction ring, increased the bearing capacity of the outer magnetic ring of magnetic bearing iron core, simultaneously through increasing the arch on the casing, reduced the clearance between casing and the flywheel rotor, reduced the magnetic leakage resistance, further increased magnetic bearing capacity, improved magnetic bearing efficiency, but its device lacks stator and casing and connects firm structure, does not possess dustproof structure moreover, to above-mentioned problem, the utility model provides a flywheel magnetic bearing makes things convenient for people to use.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a flywheel magnetic bearing which can realize more stable rotation and avoid the situation that a body is damaged by dust, and solves the technical problems of lower service life and easy dust accumulation in the prior art.

In order to solve the problems, the following technical scheme is provided:

the flywheel magnetic bearing comprises a shell, wherein a rotating shaft is arranged in the shell, a superconductive stator is arranged on the outer wall of the rotating shaft, a stator core is arranged on the outer wall of the superconductive stator, a motor is fixedly arranged on the inner wall of the stator core, a limiting arc-shaped groove is formed in the shell, and a convex plate is fixedly arranged on the outer wall of the upper end of the stator core;

the upper end of the shell is fixedly provided with an upper cover, the upper end of the upper cover is provided with a dust cover, the inside of the dust cover is provided with a mounting hole, and the inside of the mounting hole is provided with a bolt.

Further, a thrust disc is arranged at the lower end of the shell, and the thrust disc is positioned on the outer wall of the rotating shaft.

Further, the shape of the convex plate is round, and the outer wall of the convex plate is positioned in the limiting arc groove.

Further, a coil framework is fixedly arranged in the stator core.

Further, a threaded hole is formed in the upper end of the upper cover, and the lower end of the bolt is communicated with the inside of the threaded hole.

Further, the inside of shield is fixed and is provided with the fixing base, the inner wall of fixing base is fixed and is provided with T shape sealing washer.

Furthermore, the T-shaped sealing ring is made of bendable rubber.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the stator core and the shell are firmly installed, so that the shell and the stator core can not shake under long-time use, and the service life is prolonged;

2. according to the utility model, the structure for preventing dust from entering the joint of the rotating shaft and the device is arranged, so that the situation that the rotating shaft is seriously worn due to accumulation of dust at a gap can be well avoided, and the device is convenient to use.

Specific embodiments of the utility model are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not limited in scope thereby.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of a flywheel magnetic bearing according to the present utility model;

FIG. 2 is a schematic illustration of a front cross-sectional structure of a flywheel magnetic bearing according to the present utility model;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a schematic view showing a partial structure of a flywheel magnetic bearing according to the present utility model.

In the figure: 1. a housing; 2. a thrust plate; 3. a rotating shaft; 4. a superconducting stator; 5. a stator core; 6. a motor; 7. limiting the arc-shaped groove; 8. a convex plate; 9. a coil bobbin; 10. an upper cover; 11. a dust cover; 12. a bolt; 13. a mounting hole; 14. a threaded hole; 15. a fixing seat; 16. t-shaped sealing ring.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, the flywheel magnetic bearing provided in this embodiment includes a housing 1, a rotating shaft 3 is provided in the housing 1, a superconductive stator 4 is provided on an outer wall of the rotating shaft 3, a stator core 5 is provided on an outer wall of the superconductive stator 4, the stator core 5 is used for setting a motor 6, the motor 6 is fixedly provided on an inner wall of the stator core 5, a limit arc groove 7 is provided in the housing 1, a convex plate 8 is fixedly provided on an outer wall of an upper end of the stator core 5, and the convex plate 8 is used for ensuring more stable connection between the stator core 5 and the housing 1;

an upper cover 10 is fixedly arranged at the upper end of the shell 1, a dust cover 11 is arranged at the upper end of the upper cover 10, a mounting hole 13 is arranged in the dust cover 11, the mounting hole 13 is used for placing a bolt 12, the bolt 12 is arranged in the mounting hole 13,

in this embodiment, as shown in figures 1-4,

preferably, the lower end of the shell 1 is provided with a thrust disc 2, and the thrust disc 2 is positioned on the outer wall of the rotating shaft 3.

Preferably, the shape of the convex plate 8 is round, and the outer wall of the convex plate 8 is positioned in the limiting arc groove 7.

Preferably, the coil bobbin 9 is fixedly disposed inside the stator core 5.

Preferably, the upper end of the upper cover 10 is provided with a threaded hole 14, and the lower end of the bolt 12 is led into the threaded hole 14.

Preferably, the inside of the dust cover 11 is fixedly provided with a fixing seat 15, the inner wall of the fixing seat 15 is fixedly provided with a T-shaped sealing ring 16, and the T-shaped sealing ring 16 can ensure the tight soft fit between the inner wall of the fixing seat 15 and the outer wall of the rotating shaft 3.

Preferably, the T-shaped seal 16 is made of flexible rubber.

The application principle and the application flow of the utility model are as follows: when in use, the protruding plate 8 arranged on the outer wall of the stator core 5 is placed into the limit arc groove 7 on the inner wall of the shell 1, so that the stator core 5 is connected with the shell 1 and is stable, shaking is avoided, the dust cover 11 is placed at the upper end of the upper cover 10, the T-shaped sealing ring 16 is located on the outer wall of the rotating shaft 3 and is tightly attached, the bolt 12 passes through the mounting hole 13, finally, the dust cover is led to the inside of the mounting hole 13, and therefore, the dust cover 11 is mounted, and dust is prevented from entering.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

While the utility model has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this utility model will occur to those skilled in the art in light of the spirit and principles of this utility model, and such modifications and alterations are also within the scope of this utility model.

Claims

1. The flywheel magnetic bearing is characterized by comprising a shell (1), wherein a rotating shaft (3) is arranged in the shell (1), a superconducting stator (4) is arranged on the outer wall of the rotating shaft (3), a stator core (5) is arranged on the outer wall of the superconducting stator (4), a motor (6) is fixedly arranged on the inner wall of the stator core (5), a limiting arc-shaped groove (7) is formed in the shell (1), and a convex plate (8) is fixedly arranged on the outer wall of the upper end of the stator core (5);

the novel anti-dust device is characterized in that an upper cover (10) is fixedly arranged at the upper end of the shell (1), a dust cover (11) is arranged at the upper end of the upper cover (10), a mounting hole (13) is formed in the dust cover (11), and a bolt (12) is arranged in the mounting hole (13).

2. A flywheel magnetic bearing according to claim 1, characterized in that the lower end of the housing (1) is provided with a thrust disc (2), the thrust disc (2) being located on the outer wall of the spindle (3).

3. A flywheel magnetic bearing according to claim 1, characterized in that the shape of the protruding plate (8) is circular, the outer wall of the protruding plate (8) being located in the limit arc groove (7).

4. A flywheel magnetic bearing according to claim 1, characterized in that the stator core (5) is fixedly provided with a coil former (9) inside.

5. A flywheel magnetic bearing according to claim 1, characterized in that the upper end of the upper cover (10) is provided with a threaded hole (14), and the lower end of the bolt (12) is led into the threaded hole (14).

6. A flywheel magnetic bearing according to claim 1, characterized in that a fixing seat (15) is fixedly arranged in the dust cover (11), and a T-shaped sealing ring (16) is fixedly arranged on the inner wall of the fixing seat (15).

7. A flywheel magnetic bearing according to claim 6, characterized in that the T-shaped sealing ring (16) is made of flexible rubber.