一种动压气体轴承及调节方法
By introducing an adjustment device and a shape memory alloy elastic adjustment component into the hydrodynamic gas bearing, the problem of the inability to adjust the gas film clearance and support stiffness under different speed conditions is solved, realizing the adjustment of the bearing's load-bearing capacity and stiffness at different speeds, and improving the bearing's performance and the stability of the micro rotor system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AERO ENGINE ACAD OF CHINA
- Filing Date
- 2023-09-08
- Publication Date
- 2026-07-17
AI Technical Summary
The gas film clearance and support stiffness of hydrodynamic gas bearings cannot be adjusted under different speed conditions, which affects the load-bearing performance and starting performance. Furthermore, it is difficult to smoothly pass through multiple critical speeds in high-speed, light-load support configurations.
Design a hydrodynamic gas bearing, comprising a bearing sleeve, a first support member, a second support member, and an adjustment device. The adjustment member drives the stroke adjustment mechanism to move, adjusting the clearance thickness and support stiffness of the second support member. The shape memory alloy elastic adjustment member changes state to achieve adjustment of the gas film clearance and support stiffness.
It enables dynamic adjustment of air film clearance and support stiffness under different speed conditions, improves bearing load capacity and stiffness characteristics, reduces vibration amplitude across the entire speed range, and ensures smooth speed increase of the micro rotor system.
Smart Images
Figure CN117108629B_ABST