Vacuum assistant resin casted protection coating, system and method of permanent magnet motor rotor

Abstract

The invention provides a vacuum assistant resin casted protection coating, system and method of a permanent magnet motor rotor. The provided protection coating comprises an enhancing phase, demoulding cloth, and a flow guide net, wherein the enhancing phase, the demoulding cloth and the flow guide net are paved on the surfaces of the magnetic poles of a rotor in sequence. The end part of a resin injection pipeline and the end part of an air suction pipe are fixed on the exterior of the flow guide net. The rotor is hermetically connected to a vacuum isolation membrane, and the vacuum isolation membrane covers the enhancing phase, the demoulding cloth, the flow guide net, the end part of the resin injection pipeline, and the end part of the air suction pipe. Vacuum assistant resin casting and moulding equipment is applied to the magnetic pole protection of permanent magnet motor rotor so as to form a resin coating on the magnetic pole surfaces of a permanent magnet motor rotor; moreover the thickness of the resin coating is easily controlled, and mould sleeve tools are not required. The provided system and method can achieve a good casting effect, and thus the mechanical performance and anticorrosion grade of rotor magnetic poles can be enhanced.

Description

technical field [0001] The invention relates to a resin infusion protective coating, a system and a method, in particular to a vacuum-assisted resin infusion protective coating, a system and a method of a permanent magnet motor rotor. Background technique [0002] The pole protection of permanent magnet motors and permanent magnet generators is crucial to their safe operation, especially wind turbines. In recent years, with the rapid development of the wind power industry, wind turbines have gradually become larger, the requirements for mechanical strength have become higher and higher, and the operating environment has become more and more harsh. The normal operation and service life of generators bring challenges, especially for units operating in harsh climates such as coastal humid heat and salt fog. The life attenuation of the unit caused by mechanical fatigue and magnetic pole corrosion is very fatal. [0003] In the process of facing the above problems, the inventors...

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Problems solved by technology

[0006] At the same time, especially for permanent magnet wind turbine rotors, the surface structure that needs to be covered by resin coating is complex, the surface of magnetic poles and rotor yoke is uneven, there are many gaps and pores, and it is difficult to fully rely on existing technologies. Filling these pores cannot provide good anti-corrosion protection for the rotor poles. Therefore, how to achieve a resin coating with better performance is another technical problem that needs to be solved

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