Netted radial gas foil bearing

Abstract

The invention discloses a netted radial gas foil bearing, and relates to the technical field of gas foil bearings. The netted radial gas foil bearing comprises a bearing sleeve, a top-layer foil and an elastic foil assembly, the top-layer foil is located in the bearing sleeve, the first end and the second end of the top-layer foil are oppositely arranged and have a gap, and the first end of the top-layer foil and the bearing sleeve are relatively fixed in position; the second end of the top-layer foil can move relative to the bearing sleeve, the elastic foil assembly is located between the bearing sleeve and the top-layer foil, the first end and the second end of the elastic foil assembly are oppositely arranged, a gap is formed between the first end and the second end, the first end of the elastic foil assembly and the bearing sleeve are relatively fixed in position, the elastic foil assembly comprises n layers of elastic foils, and every two adjacent layers of elastic foils are fixedly connected; and each layer of elastic foil is provided with a plurality of holes, the holes of each layer of elastic foil are mutually staggered, and n is a positive integer greater than or equal to 2. By means of the arrangement, the problem that mechanical equipment breaks down due to the fact that a dynamic pressure air bearing in the prior art is prone to deformation in the working condition is solved.

Description

technical field [0001] The invention relates to the technical field of gas foil bearings, in particular to a mesh radial gas foil bearing. Background technique [0002] The friction loss of the air foil bearing is small, and it has many advantages such as almost no friction at a very high speed, good high temperature stability, small vibration, and no need for lubricating oil. It is widely used in air cycle machines, air blowers, and fuel cells. Air compressors, micro gas turbines and other machinery have very broad application prospects in the fields of low temperature and high temperature technology, high speed turbine and space technology. [0003] Among them, the dynamic pressure air bearing is a relatively common and commonly used air foil bearing, which is composed of one or more corrugated corrugated foils and top foils, and has a good flexible surface. When working, it relies on the shaft and the top foil. The relative movement of the bearing surface enables the sha...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a mesh radial gas foil bearing, which solves the problem of easy deformation in working conditions and causes failure of mechanical equipment compared with the dynamic pressure air bearing in the prior art

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