A static pressure type radial gas bearing structure

Abstract

The invention discloses a static pressure type radial gas bearing structure, which is mainly composed of fixed bearing seats, metal rubber, bearing bushes, bearing bush baffle plates and other components. The fixed bearing seat is designed as a ring, which has a fixing effect on the bearing bush and the metal rubber. There is an annular high-pressure gas chamber inside the fixed bearing seat, and the anti-rotation groove is extended along the inner surface along the axial direction, and bearing pad baffles are fixedly installed on both ends. The bearing bush is made of carbon graphite alloy material, the outer surface is provided with anti-rotation grooves along the axial direction, and the two ends of the bearing bush are designed with circumferential grooves for installing metal sealing rings. The metal rubber is installed between the bearing seat and the bearing pad, and a limit protrusion corresponding to the fixed bearing seat and the anti-rotation groove of the bearing pad is designed. The bearing bush baffle is installed on the fixed bearing seat, and it cooperates with the end faces of both ends of the bearing bush to form a sealing surface, which is used to seal the high-pressure air supply of the bearing.

Description

technical field [0001] The invention belongs to the technical field of gas bearings, and relates to a radial gas bearing, in particular to a static pressure type radial gas bearing structure. Through its overall structural layout, the support stiffness and damping of the gas bearing can be effectively improved, and the gas bearing can be widened. The use environment; by using metal rubber for support, the application range of the bearing is expanded. The bearing can be used in high temperature and corrosive environments. The metal rubber adopts metal materials with different physical parameters, different winding methods, and is pressed by different pressing forces. It can effectively adjust the stiffness and damping characteristics of the bearing support structure, and improve the running stability of the rotor. Background technique [0002] Gas bearings have the advantages of "lightweight, clean, and smooth operation", and are widely used in national defense, energy, machi...

AI Technical Summary

Problems solved by technology

The main problem is that the rubber "O" ring is made of organic rubber, which will cause aging failure when working in a high temperature (>200°C) and corrosive environment, which will affect the material properties of the "O" ring, thus Affect the stability of rotor dynamics, cause rotor vibration instability, and affect the safety and stability of equipment

In addition, the support stiffness and damping adjustment range of the "O" ring is small, which cannot effectively adjust the dynamic characteristics of the shaft system.

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