Magnetic suspension bearing isolation rotor structure

Abstract

The invention discloses a magnetic suspension bearing isolation rotor structure which comprises a base, magnetic suspension bearings, a rotor and a stator, wherein the magnetic suspension bearings and the stator are supported on the base, and the rotor is arranged in the magnetic suspension bearings and the stator in a penetrating manner. The magnetic suspension bearing isolation rotor structure further comprises a fluid container and a sheath, wherein the sheath is in a bucket-shaped structure with one end opened and the other end sealed; the sheath is arranged between the magnetic suspension bearings and the rotor and between the stator and the rotor in a penetrating manner; the open end of the sheath stretches out of the base and is connected with the fluid container; an inner cavity of the sheath is communicated with an inner cavity of the fluid container; and the left end of the rotor stretches into the inner cavity of the fluid container. The magnetic suspension bearing isolation rotor structure is good in sealing effect, long in service life and simple in structure; the sealed magnetic suspension bearing isolation rotor structure is free from limitation of the rotating speed and the linear surface speed of the rotor; except the rotor and the sheath, the other parts are free from the influence from a sealed fluid, and have no special requirements on structures and performances of used materials; and the magnetic suspension bearings require no lubrication.

Description

Technical field: [0001] The invention relates to a structure for isolating a rotor of a magnetic suspension bearing, which belongs to the technical field of magnetic suspension. Background technique: [0002] Rotary machinery is a type of machinery that is widely used, and its basic features can be summarized as follows: the rotor is mounted on the base through a set of bearings, and the work is completed through the rotation of the rotor. [0003] Rotors in rotating machinery often need to penetrate the base, but in many applications we need to ensure mechanical sealing, so a shaft seal needs to be installed between the rotor and the base. Existing shaft seals can be classified into contact seals and non-contact seals. Contact seals, such as O-ring seals, packing seals, etc., have a good sealing effect, but cannot withstand excessive surface linear velocity. Although the existing non-contact seals, such as oil seals, comb seals, carbon ring seals, etc., can withstand a la...

AI Technical Summary

Problems solved by technology

This will affect the lubrication of bearings, affect the heat dissipation of internal parts, and cause a series of problems such as fluid corrosion, corrosion, deflagration hazards, and leakage of internal machinery

Therefore, the base seal structure can only be applied to some special occasions, and cannot completely replace the shaft seal

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