Sealing device for permanent magnet of inner rotator permanent magnet motor and sealing method
A technology of sealing device and permanent magnet motor, which is applied in the manufacture of stator/rotor body, etc., can solve the problem of difficulty in ensuring the sealing of the airtight envelope, and achieve the effect of reducing workload, improving quality and reducing labor intensity.
Active Publication Date: 2012-12-12
JIANGSU NEW UNITED HEAVY IND SCI & TECH
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Problems solved by technology
[0004] The Chinese patent CN101572461A "Method for sealing the permanent magnet of the rotor of the generator and the rotor of the generator" previously applied for discloses a method for sealing the permanent magnet of the rotor of the generator, the method is to put the end barrier The parts are arranged on the vacant part of the rotor yoke; the permanent magnets and spacers are wrapped with a sheet of non-magnetic material that covers the entire length of the rotor, including the end barriers; the airtight diaphragm is arranged on the outside of the sheet, and seal it against the end of the rotor yoke so that the diaphragm and rotor yoke together form a hermetic enclosure; apply a vacuum to the hermetic enclosure between the diaphragm and rotor yoke; pour resin into the In an airtight envelope; and to solidify the resin, this method is basically a manual operation, and it is difficult to ensure the airtightness of the airtight envelope
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[0030] A permanent magnet sealing device for an inner rotor permanent magnet motor, used for sealing an inner rotor equipped with permanent magnets, such as figure 1 As shown, the inner rotor 1 has a main shaft 11, a hub-shaped rotor body 12 sleeved on the main shaft 11, permanent magnets 13 are arranged in a ring on the outer cylindrical surface of the rotor body 12, and there are many gaps between the permanent magnets 13 14. One end of the main shaft 11 is a flange end 15, and the other end is an optical axis.
[0031] The sealing device of the permanent magnet of the inner rotor permanent magnet motor has a cavity formed by the combination of a mold cover and an end cover that can seal and fix the rotor body. The mold cover 2 is made of non-magnetic material, preferably aluminum alloy casting. The end cover 3 is made of non-magnetic material, preferably cast from aluminum alloy.
[0032] Such as figure 2 image 3 As shown, the mold cover 2 has a bowl-shaped cavity for...
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The invention relates to a sealing device for a permanent magnet of an inner rotator permanent magnet motor and a sealing method, which is used for sealing an inner rotator which is provided with the permanent magnet, and the sealing device is provided with a cavity which is composed of a module sleeve and an end cover and is capable of sealing a rotator block. In the invention, a thin steel strip fixes glass fiber on the permanent magnet of the inner rotator, paraffin wax or other low-melting point substances are used for sealing the module sleeve, and the permanent magnet of the permanent magnet motor of the inner rotator is sealed by pouring and sealing resin in vacuum. The sealing device and the sealing method of the invention can effectively improve the quality of permanent magnet sealing, fully ensure that the regulated vacuum can be reached during vacuumization, improve the work efficiency of vacuum pouring by more than 50%; and because that the cylindricity of the inner circleof the rotator block after sealing can meet the requirement, no labor is needed for repairing a workpiece subject to being poured and sealed with the resin, thus the amount of work and labor intensity of personnel are greatly reduced.
Description
technical field [0001] The invention relates to a sealing device and a sealing method for a permanent magnet of an inner rotor permanent magnet motor. Background technique [0002] The rotor body of the inner rotor permanent magnet motor needs to be installed with tile-shaped permanent magnet poles, whether special-shaped slots or spacers are used to fix the permanent magnet poles, between the permanent magnets and between the permanent magnets and the rotor body, special-shaped slots or spacers There will be many gaps between them, the existence of these gaps will reduce the firmness of the permanent magnet installation, so it is necessary to pour sealing resin in these gaps; in addition, because the permanent magnets are exposed and easy to be damaged, therefore, the permanent magnets must be The upper surface is attached with glass fiber cloth for protection. [0003] Usually, the method of vacuum infusion of sealing resin is used to meet the quality requirements of seal...
Claims
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IPC IPC(8): H02K15/03
Inventor 章玮秦瑛田家峰
Owner JIANGSU NEW UNITED HEAVY IND SCI & TECH