Permanent magnet coupling device for cylindrical transmission shaft

Abstract

A permanent magnet coupling device for a cylindrical transmission shaft comprises at least a group of outer rotor drum assemblies and a group of inner rotor drum assemblies, at least a pair of outer rotor drum shaft coupling mechanisms adaptive to the outer rotor drums, at least a pair of inner rotor drum shaft coupling mechanisms adaptive to the inner rotor drums and corresponding input shaft couplings and output shaft couplings, wherein each group of outer rotor drum assemblies and each group of inner rotor drum assemblies are nested with each other and coupled by permanent magnet air gap magnetic fields; at least radial air gap magnetic field permanent magnet coupling assemblies or axial air gap magnetic field permanent magnet coupling assemblies are arranged and assembled on the adjacent corresponding positions of the outer rotor drums and the inner rotor drums; and the outer rotor drums and the inner rotor drums are coupled with the corresponding input shaft couplings or output shaft couplings by the corresponding adaptive rotor drum coupling mechanisms. The device has the characteristics of higher transmission efficiency, simple and reliable structure, convenient installation, resistance to severe environment, tolerance for shaft eccentricity, load isolation, reduction of vibration and noises, prolonging of equipment life, etc, and has the advantages of not damaging the motors and not affecting the safety of power grids.

Description

technical field [0001] The invention relates to the field of motor drive and load speed regulation systems, in particular to a permanent magnetic coupling device for a cylindrical transmission shaft. Background technique [0002] At present, energy saving and consumption reduction has become the focus of the whole society and the goal of scientific development. The electricity consumption of the motor system accounts for about 60% of the global electricity consumption, of which the electricity consumption of fans, pumps, compressors and air-conditioning refrigerators account for 10.4%, 20.9%, 9.4% and 6% of the global electricity consumption respectively. The motor system has a large quantity and a wide range, and the potential for power saving is huge. From a domestic point of view, the total installed capacity of various existing motor systems is about 420 million kilowatts, and the operating efficiency is 10-20 percentage points lower than the advanced level abroad, whic...

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Problems solved by technology

③The heat dissipation technology adopted is relatively backward. The currently known permanent magnetic coupling drive or speed regulation technology of the transmission shaft and its products mainly use traditional blade-type radiators and water cooling systems for heat dissipation. Not only the heat dissipation efficiency is not high, but due to the structure Limitation, there are many heat-dissipating components that cannot be dealt with or dealt with in place, so the power capacity per unit volume of the product cannot be too large

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