CN218161982U

CN218161982U - Permanent magnet generator

Info

Publication number: CN218161982U
Application number: CN202221564895.8U
Authority: CN
Inventors: 朱奕; 唐志广
Original assignee: Zhuzhou Weihong Dongguang Electronic Equipment Co ltd
Current assignee: Zhuzhou Weihong Dongguang Electronic Equipment Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-12-27
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a permanent magnet generator, including casing, lid, tube-shape stator, pivot and magnet, the casing has the opening, and the lid closes on the opening, and tube-shape stator cover is established in the casing, the both ends of pivot respectively with casing and lid rotatable coupling, the magnet is the tube-shape, the pivot is worn to establish in the inner chamber of magnet and is bonded with the inner chamber wall of magnet, the magnet is located in the inner chamber of tube-shape stator and can rotate for the tube-shape stator. The permanent magnet generator has the advantages of low cost, good reliability and the like.

Description

Permanent magnet generator

Technical Field

The utility model relates to a generator technical field, concretely relates to permanent magnet generator.

Background

In the fields of aerospace, national defense safety, production and life and the like, the requirements on high-power density energy conversion devices are higher and higher. The permanent magnet generator has the characteristics of high rotating speed, small volume and high energy density, and can meet the high requirements of modern high-end equipment. At present, the design of the permanent magnet generator still follows the traditional form, and the magnet is installed on the rotating shaft through the rotor, and the rotor adopts a tooth socket structure. However, the different magnetic permeability of the teeth and the slots causes the rotor to have magnetic lines of force with different quantities at different positions, and at the position where the magnetic poles are aligned with the teeth of the stator, the ferromagnetics attract each other, so that the rotation of the rotor is hindered.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough that prior art exists, provide a permanent magnet generator with low costs, good reliability.

In order to solve the technical problem, the utility model discloses a following technical scheme:

compared with the prior art, the utility model has the advantages of:

the utility model provides a permanent magnet generator, includes casing, lid, tube-shape stator, pivot and magnet, the casing has the opening, the lid closes on the opening, tube-shape stator cover is established in the casing, the both ends of pivot respectively with casing and lid rotatable coupling, the magnet is the tube-shape, the pivot is worn to establish in the inner chamber of magnet and with the inner chamber wall bonding of magnet, the magnet is located in the inner chamber of tube-shape stator and can for the tube-shape stator rotates.

In the above permanent magnet generator, preferably, the rotating shaft is provided with a positioning plate for positioning the magnet.

In the above permanent magnet generator, preferably, the positioning plate is welded to the rotating shaft.

In the above permanent magnet generator, preferably, the housing is provided with an annular positioning boss for abutting against one side of the cylindrical stator to position the cylindrical stator.

In the above permanent magnet generator, preferably, the cover body is provided with a positioning cylinder for positioning the cylindrical stator by abutting against the other side of the cylindrical stator.

In the above permanent magnet generator, preferably, two ends of the rotating shaft are respectively mounted on the housing and the cover through two bearings.

In the above permanent magnet generator, preferably, the rotating shaft has a hollow structure.

The utility model discloses a permanent magnet generator, because magnet direct mount has saved the rotor in the pivot, not only effectively reduced the influence of the tooth's socket effect of generator, also reduced spare part quantity, the cost is reduced has improved the reliability. The magnet is arranged on the rotating shaft in a bonding mode, so that the installation is convenient, and the magnet is firmly connected with the rotating shaft. The cylindrical magnet can effectively optimize the stress condition in a high-speed state, is easy to assemble, simplifies the process, and can increase the contact area with the rotating shaft, so that the magnet can be firmly bonded with the rotating shaft.

Drawings

Fig. 1 is a schematic sectional view of a permanent magnet generator.

Illustration of the drawings:

1. a housing; 11. an annular positioning boss; 2. a cover body; 3. a cylindrical stator; 4. a rotating shaft; 5. a magnet; 6. positioning a plate; 7. a bearing; 8. a positioning cylinder.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1, the permanent magnet generator of this embodiment includes a housing 1, a cover 2, a cylindrical stator 3, a rotating shaft 4 and a magnet 5, where the housing 1 has an opening, the cover 2 covers the opening, the cylindrical stator 3 is sleeved in the housing 1, two ends of the rotating shaft 4 are respectively rotatably connected with the housing 1 and the cover 2, the magnet 5 is cylindrical, the rotating shaft 4 is inserted into an inner cavity of the magnet 5 and is bonded with an inner cavity wall of the magnet 5, and the magnet 5 is located in the inner cavity of the cylindrical stator 3 and can rotate relative to the cylindrical stator 3. Because the magnet 5 is directly arranged on the rotating shaft 4, a rotor is omitted, the influence of the cogging effect of the generator is effectively reduced, the number of parts is reduced, the cost is reduced, and the reliability is improved. The magnet 5 is arranged on the rotating shaft 4 in a bonding mode, so that the installation is convenient, and the magnet 5 is firmly connected with the rotating shaft 4. The cylindrical magnet 5 can effectively optimize the stress condition in a high-speed state, is easy to assemble, simplifies the process, and can increase the contact area with the rotating shaft 4, so that the magnet 5 and the rotating shaft 4 can be firmly bonded. The permanent magnet generator also has the advantages of simple and compact structure and easy manufacture.

In the embodiment, the cylindrical stator 3 is formed by die-casting a powder metallurgy material, the cylindrical stator 3 forms a whole, the traditional process manufacturing mode of punching, laminating and fastening a silicon steel sheet is abandoned, the difficulty of production and manufacturing is greatly reduced, the workpiece manufacturing time is shortened, and the characteristic that the loss of the silicon steel sheet is increased under high frequency (especially under the state of exceeding 1000 Hz) is different from that of the silicon steel sheet, the powder metallurgy material can optimize the magnetic conductivity of the material by adjusting the use ratio of main raw materials in the powder metallurgy material, so that the loss of a magnetic circuit of the cylindrical stator 3 under high frequency is reduced, and the use condition of high-speed and high-frequency operation of a generator is met.

In this embodiment, the rotating shaft 4 is provided with a positioning plate 6 for positioning the magnet 5. When installing magnet 5, fix a position magnet 5 through 6 butt magnets 5 of locating plate, the simple operation improves the installation accuracy moreover. The magnet 5 is magnetic steel.

In this embodiment, the positioning plate 6 is welded to the rotating shaft 4. Because the locating plate 6 and the rotating shaft 4 are of split structures, the locating plate 6 and the rotating shaft 4 can be manufactured separately, the difficulty in production and manufacturing can be reduced, and the cost is reduced. The positioning plate 6 is connected with the rotating shaft 4 in a welding mode, and is firm in connection and good in reliability.

In this embodiment, the housing 1 is provided with an annular positioning boss 11 for positioning the cylindrical stator 3 by abutting one side of the cylindrical stator 3. Through 11 butt location of annular location boss, the tube-shape stator 3 of easy to assemble does benefit to moreover and improves the installation accuracy.

In the present embodiment, the lid body 2 is provided with a positioning cylinder 8 for abutting the other side of the cylindrical stator 3 to position the cylindrical stator 3. The cooperation of the annular positioning boss 11 on the positioning cylinder 8 on the cover body 2 and the shell body 1 fixes the cylindrical stator 3, avoids the axial movement of the cylindrical stator 3, and improves the stability.

In this embodiment, two ends of the rotating shaft 4 are respectively mounted on the housing 1 and the cover 2 through two bearings 7. So that the rotation of the rotating shaft 4 is smoother and more stable.

In this embodiment, the rotating shaft 4 is a hollow structure. The rotating shaft 4 adopts a hollow structure, so that the weight of the permanent magnet generator can be reduced, and the cost is reduced.

The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. To those skilled in the art, the modifications and changes that can be made without departing from the scope of the present invention shall be considered as the protection scope of the present invention.

Claims

1. The utility model provides a permanent magnet generator, includes casing (1), lid (2), tube-shape stator (3), pivot (4) and magnet (5), casing (1) has the opening, lid (2) lid closes on the opening, tube-shape stator (3) cover is established in casing (1), the both ends of pivot (4) respectively with casing (1) and lid (2) rotatable coupling, its characterized in that: magnet (5) are the tube-shape, pivot (4) wear to establish in the inner chamber of magnet (5) and with the inner chamber wall bonding of magnet (5), magnet (5) are located in the inner chamber of tube-shape stator (3) and can for tube-shape stator (3) rotate.

2. The permanent magnet generator of claim 1, wherein: and a positioning plate (6) for positioning the magnet (5) is arranged on the rotating shaft (4).

3. The permanent magnet generator of claim 2, wherein: the positioning plate (6) is welded on the rotating shaft (4).

4. The permanent magnet generator of claim 1, wherein: and the shell (1) is provided with an annular positioning boss (11) which is used for abutting against one side of the cylindrical stator (3) so as to position the cylindrical stator (3).

5. The permanent magnet generator of claim 4, wherein: the cover body (2) is provided with a positioning cylinder (8) which is used for abutting against the other side of the cylindrical stator (3) so as to position the cylindrical stator (3).

6. The permanent magnet generator of claim 1, wherein: and two ends of the rotating shaft (4) are respectively installed on the shell (1) and the cover body (2) through two bearings (7).

7. A permanent magnet generator according to any of claims 1 to 6, characterized in that: the rotating shaft (4) is of a hollow structure.