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A foil bearing for high-speed rotor

A technology of foil bearings and high-speed rotors, applied in the direction of rotating bearings, bearings, shafts and bearings, etc., can solve the problems of poor dynamic performance of high-speed rotors, achieve the same damping direction, vibration suppression, and improve the damping coefficient.

Active Publication Date: 2021-04-09
WENLI GUANGDONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, existing foil bearings vibrate when cooperating with high-speed rotors, resulting in poor dynamic performance of high-speed rotors

Method used

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  • A foil bearing for high-speed rotor
  • A foil bearing for high-speed rotor
  • A foil bearing for high-speed rotor

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Embodiment Construction

[0038] Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. figure 1 is a schematic cut-away front view of the foil bearing according to an embodiment of the present invention, showing the circumferential direction of the foil bearing; figure 2 is a schematic diagram of the relative displacement of the top foil (or the middle foil), the corrugated foil and the bearing outer ring (or the bottom foil); image 3 is a partial schematic diagram of the corrugated foil cooperating with the middle foil and the bottom foil or the outer ring of the bearing at the same time; Figure 4 Yes image 3 Partial enlarged view of A.

[0039] see figure 1 , image 3 and Figure 4 , thi...

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Abstract

The invention provides a foil bearing for a high-speed rotor and relates to the field of high-speed rotors. The bearing includes: a top foil, the rotor is placed in the first cavity, an intermediate foil, the top foil is placed in the second cavity, the surface of the second cavity is in contact with the top The outer surface of the foil is completely attached, so that the middle foil forms an arc surface contact with the top foil; the wave foil, the third cavity is cylindrical and wraps the middle foil, and the second The top surface of a protrusion is formed as an arc surface that is completely attached to the outer surface of the intermediate foil, so that the outer surface of the intermediate foil forms an arc with the top surface of each of the first protrusions surface contact; and a bearing outer ring in which the corrugated foil is mounted. Since the top foil and the middle foil are in arc surface contact, the coefficient of friction between the top foil and the middle foil, and between the middle foil and the corrugated foil is fully increased, thereby fully increasing the damping coefficient of their mutual contact surfaces.

Description

technical field [0001] The invention relates to the field of high-speed rotors, in particular to a foil bearing for high-speed rotors. Background technique [0002] Aerodynamic foil bearings, also known as foil bearings, are hydrodynamic bearings that consist of a series of metal foil layers. They can not only provide support for high-speed (greater than 100,000 RPM) rotors, but also accommodate shaft misalignment and deformation, as often encountered in turbomachinery. Aerodynamic foil bearings dominate the rotor support of aircraft air circulation systems. Higher load foil bearings operating at high temperatures are an emerging technology with applications in several areas, including aircraft auxiliary power units, microturbines, gas compressors and blowers, and turbochargers. Since their initial development fifty years ago, the general trend for foil bearings has been toward larger and more complex rotor systems. [0003] However, the existing foil bearings vibrate whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C17/02F16C27/02
CPCF16C17/024F16C27/02
Inventor 华青松周琼琼张鉴邱瑞林徐晓通魏建新刘亚波
Owner WENLI GUANGDONG TECH CO LTD