CN219351375U

CN219351375U - Integrated flywheel rotor structure

Info

Publication number: CN219351375U
Application number: CN202223115325.3U
Authority: CN
Inventors: 张志华; 柳伟; 张艳清; 蔡华; 马逊; 李萍; 余笔超
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-07-14
Anticipated expiration: 2032-11-23

Abstract

The utility model provides an integrated flywheel rotor structure, which comprises: the device comprises a rotating shaft, a first rotor part and a second rotor part, wherein the first rotor part and the second rotor part are sleeved on the rotating shaft at intervals, an excitation area is arranged between the first rotor part and the second rotor part, the first rotor part comprises a plurality of first rotor teeth, the first rotor teeth are arranged in an oblique pole manner, and a first rotor groove is formed between two adjacent first rotor teeth; the second rotor part comprises a plurality of second rotor teeth, the number of the second rotor teeth is the same as that of the first rotor teeth, the second rotor teeth are arranged in an oblique pole manner, and a second rotor groove is formed between two adjacent second rotor teeth; the first rotor part is overlapped with the second rotor part after rotating around the rotating shaft by a preset angle after mirror symmetry along a radial symmetry plane of the excitation area. By applying the technical scheme of the utility model, the technical problem of low energy storage density of the split motor rotor in the prior art can be solved.

Description

Integrated flywheel rotor structure

Technical Field

The utility model relates to the technical field of flywheel energy storage, in particular to an integrated flywheel rotor structure.

Background

The high-speed motor has the characteristics of high rotating speed, small volume, high power density, high efficiency and the like, and has wide application prospect in the fields of flywheel energy storage, high-speed electric main shafts, air circulation refrigerating systems, fuel cells, high-speed centrifugal compressors, distributed power generation systems of aircraft or ship-based power supply equipment and the like. The existing motor rotor for storing energy of the conventional flywheel and the flywheel adopt split design, and the rotor and the flywheel are connected through a rotating shaft and other devices. The rotor in the high-speed motor has low energy storage density, low rotating speed and low structural strength.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art.

The utility model provides an integrated flywheel rotor structure, which comprises: the device comprises a rotating shaft, a first rotor part and a second rotor part, wherein the first rotor part and the second rotor part are sleeved on the rotating shaft at intervals, an excitation area is arranged between the first rotor part and the second rotor part, the first rotor part comprises a plurality of first rotor teeth, the first rotor teeth are arranged in an oblique pole manner, and a first rotor groove is formed between two adjacent first rotor teeth; the second rotor part comprises a plurality of second rotor teeth, the number of the second rotor teeth is the same as that of the first rotor teeth, the second rotor teeth are arranged in an oblique pole manner, and a second rotor groove is formed between two adjacent second rotor teeth; the first rotor part is overlapped with the second rotor part after rotating around the rotating shaft by a preset angle after mirror symmetry along a radial symmetry plane of the excitation area.

Further, the first rotor teeth and the second rotor teeth are arranged in a straight or V-shaped oblique pole.

Further, the integrated flywheel rotor structure further comprises a first transition portion and a second transition portion, wherein the first transition portion is located at one side, far away from the excitation area, of the first rotor tooth, the first transition portion is used for connecting the rotating shaft with the first rotor tooth, the second transition portion is located at one side, far away from the excitation area, of the second rotor tooth, and the second transition portion is used for connecting the rotating shaft with the second rotor tooth.

Further, the integrated flywheel rotor structure is manufactured by adopting alloy steel integrated processing.

By the technical scheme, the utility model provides an integrated flywheel rotor structure, and the flywheel rotor structure is not only a motor rotor but also an energy storage flywheel through the arrangement of a rotating shaft, an excitation area, a plurality of first rotor teeth and a plurality of second rotor teeth, so that the integrated integration of the motor rotor and the energy storage flywheel is realized. Compared with the prior art, the technical scheme of the utility model can solve the technical problem of low energy storage density of the split motor rotor in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 illustrates a front view of an integrated flywheel rotor structure with a "in-line" beveled pole provided in accordance with an embodiment of the present utility model;

FIG. 2 illustrates an oblique view of an integrated flywheel rotor structure with a "straight" oblique pole provided in accordance with an embodiment of the present utility model;

FIG. 3 illustrates a front view of an integrated flywheel rotor structure having a "V" shaped skewed pole in accordance with another embodiment of the utility model;

fig. 4 shows an oblique view of an integrated flywheel rotor structure with a "V" shaped oblique pole provided in accordance with another embodiment of the present utility model.

1. A rotating shaft; 2. a first rotor tooth; 3. a first rotor groove; 4. an excitation region; 5. a second rotor tooth; 6. a second rotor groove; 7. a first transition portion; 8. a second transition.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1, according to an embodiment of the present utility model, there is provided an integrated flywheel rotor structure including: the rotor comprises a rotating shaft 1, a first rotor part and a second rotor part, wherein the first rotor part and the second rotor part are sleeved on the rotating shaft 1 at intervals, an excitation area 4 is arranged between the first rotor part and the second rotor part, the first rotor part comprises a plurality of first rotor teeth 2, the first rotor teeth 2 are arranged in an oblique pole manner, and a first rotor groove 3 is formed between two adjacent first rotor teeth 2; the second rotor part comprises a plurality of second rotor teeth 5, the number of the second rotor teeth 5 is the same as that of the first rotor teeth 2, the second rotor teeth 5 are arranged in an oblique pole manner, and a second rotor groove 6 is formed between two adjacent second rotor teeth 5; the first rotor part is mirror-symmetrical along the radial symmetry plane of the excitation area 4, and then is overlapped with the second rotor part after rotating around the rotating shaft 1 by a preset angle.

By applying the configuration mode, the integrated flywheel rotor structure is provided, and the flywheel rotor structure is not only a motor rotor but also an energy storage flywheel through the arrangement of the rotating shaft 1, the excitation area 4, the plurality of first rotor teeth 2 and the plurality of second rotor teeth 5, so that the integrated integration of the motor rotor and the energy storage flywheel is realized. Compared with the prior art, the technical scheme of the utility model can solve the technical problem of low energy storage density of the split motor rotor in the prior art.

Further, in the present utility model, in order to eliminate the cogging harmonics, the first rotor teeth 2 and the second rotor teeth 5 may be arranged in a "straight" or "V" shaped oblique pole arrangement. As shown in fig. 1 and 2, the first rotor teeth 2 and the second rotor teeth 5 are arranged in a straight-shaped oblique pole, and as shown in fig. 3 and 4, the first rotor teeth 2 and the second rotor teeth 5 are arranged in a V-shaped oblique pole. The oblique pole angle of the rotor teeth is matched with the pole grooves of the motor, tooth slot harmonic waves can be effectively eliminated through the oblique pole arrangement of the first rotor teeth 2 and the second rotor teeth 5, tooth slot torque during motor operation is eliminated, and flywheel rotor loss is reduced.

In addition, the straight or V-shaped inclined poles of the flywheel rotor can drive surrounding air to regularly move when rotating at high speed, so that flowing air is generated to cool the flywheel rotor, and self-air cooling of the flywheel rotor structure is realized.

Further, in the present utility model, in order to achieve stable connection between the rotor teeth and the rotating shaft 1, the configurable integrated flywheel rotor structure further includes a first transition portion 7 and a second transition portion 8, the first transition portion 7 is located at a side of the first rotor tooth 2 away from the excitation area 4, the first transition portion 7 is used for connecting the rotating shaft 1 and the first rotor tooth 2, the second transition portion 8 is located at a side of the second rotor tooth 5 away from the excitation area 4, and the second transition portion 8 is used for connecting the rotating shaft 1 and the second rotor tooth 5.

In addition, in the utility model, the flywheel rotor structure is manufactured by adopting alloy steel integrated processing. Compared with the rotor with a multi-material structure in the prior art, the flywheel rotor is manufactured by adopting high-strength alloy steel integrated processing, so that the flywheel rotor has higher reliability. Meanwhile, when the linear speed of the surface of the flywheel rotor exceeds the sonic speed, the strength requirement is still met, so that the flywheel rotor has higher energy storage density.

In the utility model, an excitation winding is arranged at the excitation area 4 corresponding to the stator side in the flywheel rotor structure, and rotor teeth and rotor grooves are matched to form one pole of the motor, and a structure schematic diagram of 8 poles is shown in fig. 1 to 4. In the utility model, the motor is of a transverse magnetic circuit structure. Under the no-load excitation condition, the excitation main magnetic flux is closed along the rotating shaft 1, the first rotor teeth 2, the stator iron cores corresponding to the first rotor teeth 2, the machine base, the stator iron cores corresponding to the second rotor teeth 5 and the second rotor teeth 5, and the same polarity is formed in a single-side air gap. The rotor axis staggered reluctance structure is adopted, so that magnetic poles with different polarities alternately cut the armature winding to generate alternating potential, and the motor is maintained to run.

In the present utility model, the rotary shaft 1 is used for mounting bearings to support and fix the flywheel rotor. Under the allowable conditions of the structural strength, the dynamic characteristics and the like of the rotor, the outer diameter and the axial length of the flywheel rotor can be increased according to the needs, so that the flywheel rotor has the characteristics of large rotational inertia and high energy density.

For a further understanding of the present utility model, the integrated flywheel rotor structure of the present utility model is described in detail below with reference to fig. 1-4.

As shown in fig. 1 to 4, an integrated flywheel rotor structure is provided according to an embodiment of the present utility model, which is manufactured by using an alloy steel integrated process. This integrated flywheel rotor structure includes: the rotary shaft 1, the first rotor part, the second rotor part, the first transition part 7 and the second transition part 8.

The first rotor part and the second rotor part are sleeved on the rotating shaft 1 at intervals, an excitation area 4 is arranged between the first rotor part and the second rotor part, the first rotor part comprises a plurality of first rotor teeth 2, the first rotor teeth 2 are arranged in a straight-line shape or a V-shaped oblique pole, and a first rotor groove 3 is formed between two adjacent first rotor teeth 2.

The second rotor part comprises a plurality of second rotor teeth 5, the number of the second rotor teeth 5 is the same as that of the first rotor teeth 2, the second rotor teeth 5 are arranged in a straight-line or V-shaped oblique pole, and a second rotor groove 6 is formed between two adjacent second rotor teeth 5.

The first rotor part is mirror-symmetrical along the radial symmetry plane of the excitation area 4, and then is overlapped with the second rotor part after rotating around the rotating shaft 1 by a preset angle.

The first transition portion 7 is located the side that the excitation region 4 was kept away from to first rotor tooth 2, and first transition portion 7 is used for connecting pivot 1 and first rotor tooth 2, and the second transition portion 8 is located the side that the excitation region 4 was kept away from to second rotor tooth 5, and second transition portion 8 is used for connecting pivot 1 and second rotor tooth 5.

In summary, the present utility model provides an integrated flywheel rotor structure, which, through the arrangement of the rotating shaft, the excitation area, the plurality of first rotor teeth and the plurality of second rotor teeth, makes the flywheel rotor structure be not only a motor rotor but also an energy storage flywheel, and realizes the integrated integration of the motor rotor and the energy storage flywheel. Compared with the prior art, the technical scheme of the utility model can solve the technical problem of low energy storage density of the split motor rotor in the prior art.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An integrated flywheel rotor structure, characterized in that it comprises: the rotor comprises a rotating shaft (1), a first rotor part and a second rotor part, wherein the first rotor part and the second rotor part are sleeved on the rotating shaft (1) at intervals, an excitation area (4) is arranged between the first rotor part and the second rotor part, the first rotor part comprises a plurality of first rotor teeth (2), the first rotor teeth (2) are arranged in a slant pole manner, and a first rotor groove (3) is formed between two adjacent first rotor teeth (2); the second rotor part comprises a plurality of second rotor teeth (5), the number of the second rotor teeth (5) is the same as that of the first rotor teeth (2), the second rotor teeth (5) are arranged in an oblique pole manner, and a second rotor groove (6) is formed between two adjacent second rotor teeth (5); the first rotor part is overlapped with the second rotor part after being rotated around the rotating shaft (1) by a preset angle after being in mirror symmetry along a radial symmetry plane of the excitation area (4).

2. The integrated flywheel rotor structure according to claim 1, characterized in that the first rotor teeth (2) and the second rotor teeth (5) are arranged in a "one" or "V" shape oblique pole.

3. The integrated flywheel rotor structure according to claim 1 or 2, characterized in that it further comprises a first transition portion (7) and a second transition portion (8), said first transition portion (7) being located at a side of said first rotor tooth (2) remote from the excitation area (4), said first transition portion (7) being used for connecting said rotating shaft (1) with said first rotor tooth (2), said second transition portion (8) being located at a side of said second rotor tooth (5) remote from the excitation area (4), said second transition portion (8) being used for connecting said rotating shaft (1) with said second rotor tooth (5).

4. The integrated flywheel rotor structure of claim 1 wherein the integrated flywheel rotor structure is fabricated using an alloy steel integration process.