A Radial Aerodynamic Bearing with Adjustable Slots

Abstract

A radial air dynamic pressure bearing with adjustable slots, including a bearing seat, an inner layer foil and an elastic wave foil, a slot is arranged in the axial direction in the bearing seat, and a movable Adjusting the pressure plate, the position corresponding to the slot in the bearing seat is installed with an adjustment piece along the radial direction, and the adjustment piece penetrates into the slot to drive the adjustment pressure plate to move; one end of the inner layer foil and the elastic wave foil is provided with The other end of the fixed piece is a free end, the fixed piece is inserted into the slot, and the adjusting piece drives the adjusting pressure plate to move in the slot to fix the fixed piece. By moving and adjusting the pressure plate, the width of the slot corresponding to the fixed piece can be adjusted arbitrarily, so that the fixed piece of the inner layer foil and the elastic wave foil can be fixed reasonably to ensure that it will not be too loose or too tight, neither loose nor In the case of displacement, there will be no difficulty in insertion or deformation under force, which ensures the stability of the formed air film and improves the stability of the entire bearing.

Description

Technical field: [0001] The invention relates to a radial air dynamic pressure bearing with adjustable slots. Background technique: [0002] Air bearing is a kind of self-acting dynamic pressure air bearing that uses air as lubricating medium. Compared with traditional high-speed bearings, air bearing has the advantages of simple structure, high speed, low friction power consumption, high and low temperature resistance, good stability and convenient maintenance. It has broad application prospects in the field of high-speed rotating machinery. At present, air bearings have been widely used in the field of centrifugal air compressors for hydrogen fuel cells. [0003] The radial air bearing uses the compression effect of the wedge-shaped gap air film between the inner foil and the rotor to support the high-speed operation of the rotor. It is mainly composed of the outer bearing seat, the middle elastic wave foil and the inner inner foil. Among them, the elastic One end of the ...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the prior art, the present invention provides a radial aerodynamic pressure bearing with an adjustable slot, which solves the problem that the slot width is fixed in the past, and it is difficult to insert the elastic wave foil and the inner layer foil inside it. The problem of matching the fixed end of the elastic wave foil and the inner layer foil in the past has been solved.

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