Integrated gas bearing, rotor system and micro gas turbine generator set

Abstract

The invention provides an integrated gas bearing, a rotor system and a micro gas turbine generator set. The gas bearing is installed on a spindle, and comprises a thrust plate, a first bearing body and a second bearing body, wherein the thrust plate and the spindle are fixedly connected or integrally formed; the first bearing body and the second bearing body are arranged on the spindle in a sleeving way and are located on two sides of the thrust plate; the first bearing body is provided with a radial bearing part and a thrust bearing part integrally formed; the radial bearing part and the spindle are provided predetermined radial clearances in the radial direction; the thrust bearing part and the thrust plate are oppositely arranged in the axial direction and are provided with predetermined first axial clearances; and the second bearing body and the thrust plate are oppositely arranged in the axial direction and are provided with predetermined second axial clearances. The integrated gas bearing can support the spindle in the radial direction and the axial direction at the same time, and is simple to process, high in processing accuracy, low in assembling accuracy requirement, low in manufacturing cost, economical and practical.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to an integrated gas bearing, a rotor system and a micro gas turbine generator set. Background technique [0002] The rotor system of ultra-high-speed rotating mechanical equipment usually chooses non-contact bearings. At present, non-contact bearings generally include magnetic bearings and air bearings. Air bearings rely on the pressure gas film in the bearing gap to support the rotor system. Therefore, the machining accuracy of the bearing clearance has a great influence on the performance of the air bearing; at the same time, for the rotor system that generates axial force during rotation, thrust bearings are used at the same time; in the rotor system that installs radial bearings and thrust bearings at the same time, the bearing The accuracy of the gap not only depends on the machining accuracy of the bearing, but also is affected by the combined installation accuracy of the r...

AI Technical Summary

Problems solved by technology

Therefore, this kind of rotor system puts forward higher requirements for the machining accuracy and installation accuracy of radial bearings and thrust bearings, which greatly increases the manufacturing cost of the entire rotor system.

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