Magazine type rotor magnetic pole of permanent magnet wind driven generator and permanent magnet wind driven generator

Abstract

The utility model discloses a magazine type rotor magnetic pole of a permanent magnet wind driven generator and the permanent magnet wind driven generator. The rotor magnetic pole comprises a plurality of magnetic pole modules, each magnetic pole module comprises a permanent magnet, a magazine type protective shell, a nonmagnetic magnetic pole box and a magnetic pole box pressing plate, and the nonmagnetic magnetic pole box is provided with a mounting groove extending in the length direction of the nonmagnetic magnetic pole box; the permanent magnet is fixed in the magazine type protective shell, and after the magazine type protective shell integrally penetrates into the mounting groove of the nonmagnetic magnetic pole box, a magnetic pole box pressing plate for limiting the permanent magnet and the magazine type protective shell is detachably assembled at the end part of the nonmagnetic magnetic pole box; according to the utility model, the permanent magnet can be fixed in the magazine type protective shell for integral magnetization, then is inserted into the nonmagnetic magnetic pole box mounted on the rotor bracket after magnetization, and is limited and fixed through the magnetic pole box pressing plate, so that the permanent magnet can be effectively prevented from being collided and damaged in the assembly process, the magnetization energy density and the utilization rate are improved, and the production efficiency is improved. Performance consistency of the permanent magnets is guaranteed, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet wind generator rotors, in particular to a permanent magnet wind generator magazine-type rotor pole and a permanent magnet wind generator. Background Art

[0002] The rotor structure of a permanent magnet motor is mainly divided into three types according to the installation position of the permanent magnet: surface mount type, plug-in type and embedded type. In this field, the embedded structure is widely used in the field of wind turbines due to its advantages such as reliable fixation and higher magnetic flux density.

[0003] At present, the production of embedded rotors of high-power permanent magnet motors usually involves first fixing the non-magnetic permanent magnet 01 in the pole box 02 with a specific glue, then magnetizing the pole box 02 and assembling it into a single pole assembly, and finally fixing the pole assembly to the rotor bracket 03 through the pressure plate 04. Figure 1 As shown in the figure, the magnetic pole box and other ferromagnetic structures interact to generate strong magnetic forces, making the assembly process complex and posing a high safety risk. Bumps and collisions can easily damage and demagnetize the permanent magnets, affecting assembly efficiency. Furthermore, the consistency of the spliced magnetic poles may be reduced, impacting the motor assembly accuracy and performance. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and provide a permanent magnet wind turbine generator magazine-type rotor pole and a permanent magnet wind turbine. The permanent magnet in the utility model can be fixed in a magazine-type protective shell and magnetized as a whole. After magnetization, it is inserted into a pole box pre-installed and fixed on the rotor bracket, and then the permanent magnet is limited and fixed by a pole box pressure plate.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a magazine-type rotor pole of a permanent magnet wind turbine, comprising a plurality of pole modules; wherein each pole module comprises a permanent magnet, a magazine-type protective shell, a non-magnetic pole box and a pole box pressure plate, and the non-magnetic pole box is provided with a mounting groove extending along its length; the permanent magnet is fixed in the magazine-type protective shell, and after the magazine-type protective shell is inserted into the mounting groove of the non-magnetic pole box as a whole, a pole box pressure plate for limiting the permanent magnet and the magazine-type protective shell is detachably assembled at the end of the non-magnetic pole box.

[0006] Furthermore, every two magnetic pole modules are stacked to form a magnetic pole unit of the rotor, and the two magnetic pole modules are commonly connected to a rotor bracket.

[0007] Furthermore, the non-magnetic pole box is mounted on the rotor bracket.

[0008] Furthermore, a limiting buckle is provided at one end of the magazine-type protective shell, and the limiting buckle forms a detachable connection with the non-magnetic pole box.

[0009] Furthermore, the cross-sectional area of the magazine-type protective shell is larger than the cross-sectional area of the permanent magnet, so that the permanent magnet can be matched and installed with the magazine-type protective shell.

[0010] Furthermore, the cross-sectional area of the mounting groove is larger than the cross-sectional area of the magazine-type protective shell, so that the magazine-type protective shell can be matched and installed with the mounting groove.

[0011] Furthermore, the cross-sectional shape of the mounting groove is rectangular.

[0012] A permanent magnet wind turbine generator comprises a permanent magnet generator, wherein the permanent magnet generator comprises a stator and a rotor, and the rotor comprises the above-mentioned magazine-type rotor poles of the permanent magnet wind turbine generator.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] 1. Each magnetic pole unit of the rotor magnetic pole in the utility model is composed of only two magnetic pole boxes, which reduces the assembly steps, improves production efficiency and shortens the production cycle;

[0015] 2. The permanent magnet of the utility model is fixed in the magazine-type protective shell, which can effectively prevent the permanent magnet from being damaged during the assembly process;

[0016] 3. The utility model reduces the number of permanent magnets and can concentrate the overall magnetization, thereby improving the magnetization energy density and utilization rate, and ensuring the consistency of permanent magnet performance;

[0017] 4. The permanent magnet of the utility model ensures dimensional consistency, reduces the number of splicing times, and improves the mechanical properties and assembly accuracy of the magnetic pole;

[0018] 5. The utility model reduces the difficulty of assembly and improves the efficiency of assembly by pre-installing the non-magnetic pole box on the rotor bracket, and then directly inserting the permanent magnet and the magazine-type protective shell into the mounting hole of the pole box after magnetization.

[0019] 6. The magazine-type protective shell of the utility model is provided with a limit buckle, which can realize the overall assembly, disassembly and replacement of the permanent magnet;

[0020] 7. The number of permanent magnets in the present invention is reduced, which further reduces the manual quality inspection process and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a commonly used rotor in the prior art.

[0022] Figure 2 This is a schematic diagram of the structure of the magazine-type rotor pole of a permanent magnet wind turbine.

[0023] Figure 3 This is a schematic diagram of the structure of a magazine-type protective case.

[0024] Figure 4 This is a schematic diagram of the assembly of the magazine-type rotor poles of a permanent magnet wind turbine. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to specific embodiments.

[0026] Example 1

[0027] See also Figures 2 to 4 As shown, the magazine-type rotor pole of the permanent magnet wind turbine provided by this embodiment includes a plurality of pole modules 1. Every two pole modules 1 are stacked to form a pole unit of the rotor, and the two pole modules 1 are commonly connected to a rotor bracket 2.

[0028] Among them, each magnetic pole module 1 includes a permanent magnet 101, a magazine-type protective shell 102, a non-magnetic magnetic pole box 103 and a magnetic pole box pressure plate 104, the non-magnetic magnetic pole box 103 is installed on the rotor bracket 2, and the non-magnetic magnetic pole box 103 is provided with a mounting groove 1031 extending along its length; the permanent magnet 101 is inserted into and fixed in the magazine-type protective shell 102, and the permanent magnet 101 is magnetized as a whole. After the magnetization is completed, the magazine-type protective shell 102 and the permanent magnet 101 are inserted into the mounting groove 1031 of the non-magnetic magnetic pole box 103 as a whole, and one end of the magazine-type protective shell 102 is provided with a limit buckle 1021, and the limit buckle 1021 is provided with a disassembly recess 1 022. A convex stop is formed on the non-magnetic pole box 103, and the limiting buckle 1021 forms a detachable connection with the non-magnetic pole box 103 through positioning by the concave and convex stops. Finally, a pole box pressure plate 104 for limiting the permanent magnet 101 and the magazine-type protective shell 102 is detachably assembled at the end of the non-magnetic pole box 103; the cross-sectional shape of the mounting groove 1031 is rectangular, and the cross-sectional area of the mounting groove 1031 is larger than the cross-sectional area of the magazine-type protective shell 102, and the cross-sectional area of the magazine-type protective shell 102 is larger than the cross-sectional area of the permanent magnet 101, thereby ensuring the matching installation between the mounting groove 1031, the magazine-type protective shell 102 and the permanent magnet 101.

[0029] Example 2

[0030] The permanent magnet wind turbine provided in this embodiment includes a permanent magnet generator, which includes a stator and a rotor. The rotor includes the magazine-type rotor poles of the permanent magnet wind turbine described in Example 1.

[0031] The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magazine-type rotor pole for a permanent magnet wind turbine generator, characterized in that: It comprises a plurality of magnetic pole modules; wherein each magnetic pole module comprises a permanent magnet, a magazine-type protective shell, a non-magnetic magnetic pole box and a magnetic pole box pressure plate, and the non-magnetic magnetic pole box is provided with a mounting groove extending along its length direction; the permanent magnet is fixed in the magazine-type protective shell, and after the magazine-type protective shell is entirely inserted into the mounting groove of the non-magnetic magnetic pole box, a magnetic pole box pressure plate for limiting the permanent magnet and the magazine-type protective shell is detachably assembled at the end of the non-magnetic magnetic pole box.

2. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 1, characterized in that: Every two magnetic pole modules are stacked to form a magnetic pole unit of the rotor, and the two magnetic pole modules are commonly connected to a rotor bracket.

3. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 2, characterized in that: The non-magnetic pole box is mounted on the rotor bracket.

4. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 1, characterized in that: A limiting buckle is provided at one end of the magazine-type protective shell, and the limiting buckle forms a detachable connection with the non-magnetic pole box.

5. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 1, characterized in that: The cross-sectional area of the magazine-type protective shell is larger than the cross-sectional area of the permanent magnet, so that the permanent magnet can be matched and installed with the magazine-type protective shell.

6. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 1, characterized in that: The cross-sectional area of the mounting groove is larger than the cross-sectional area of the magazine-type protective shell, so that the magazine-type protective shell can be matched and installed in the mounting groove.

7. The magazine-type rotor pole of a permanent magnet wind turbine generator according to claim 6, characterized in that: The cross-section of the mounting groove is rectangular.

8. A permanent magnet wind turbine generator, comprising a permanent magnet generator, wherein the permanent magnet generator comprises a stator and a rotor, characterized in that: The rotor includes the magazine-type rotor poles of the permanent magnet wind turbine generator according to any one of claims 1 to 7.

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