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Design method of air foil radial bearing considering graded load, radial bearing

A technology for radial bearings and design methods, applied in the direction of bearings, bearings, shafts and bearings for rotational motion, which can solve problems such as low bearing capacity, failure, and plastic deformation of support foils

Active Publication Date: 2020-12-01
擎能动力科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that its bearing capacity is low, especially the support foil will undergo plastic deformation under a large load and thus fail

Method used

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  • Design method of air foil radial bearing considering graded load, radial bearing
  • Design method of air foil radial bearing considering graded load, radial bearing
  • Design method of air foil radial bearing considering graded load, radial bearing

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1, the air foil radial bearing design method based on cosine wave considering graded load, the shortest distance between the vertex of the cosine wave support unit and the elastic cylinder with graded load is recorded as s 1 , which satisfies:

[0043] s≥s 1 , the cosine wave support unit and the graded load elastic cylinder work together;

[0044] s1 , the cosine wave support unit works, and the graded load elastic cylinder does not work;

[0045] The shape cosine wave (phase angle is π) of described cosine wave support unit;

[0046] Under the above conditions, the shape of the graded load elastic cylinder, and the shape of the cosine wave support unit are;

[0047] Taking the direction of the vertex of the cosine wave support unit-the center of the shell as the Y axis, and the direction of the line connecting the two feet of the cosine wave support unit as the X axis, the shape of the cosine wave support unit can be expressed by the following formula: ...

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Abstract

The invention discloses an air foil radial bearing design method considering hierarchical load based on cosine waves and a radial bearing. The technical key points are as follows: cosine wave supporting units are arranged on the outer foil and the inner foil, and graded load elastic cylinders are arranged between the cosine wave supporting units and the outer foil; the closest distance between thevertex of the cosine wave supporting unit and the graded load elastic column body is recorded as s1, that is, s is greater than or equal to s1, and the cosine wave supporting unit and the graded loadelastic column body work together; the invention aims to provide the cosine wave-based air foil radial bearing design method considering the graded load and the radial bearing, so that the bearing capacity of the air foil radial bearing is improved.

Description

technical field [0001] The invention relates to the field of radial bearings for motors of air compressors, and more specifically relates to a cosine wave-based air foil radial bearing design method and a radial bearing in consideration of graded loads. Background technique [0002] Gas foil radial bearings have the advantages of small mass, high reliability, and high temperature resistance, and are the first choice for radial bearings of ultra-high-speed motors. Its disadvantage is that its load-bearing capacity is low, especially the support foil will undergo plastic deformation under heavy loads and thus fail. [0003] In view of the above problems, the applicant's previous application "A radial bearing of air foil based on graded deformation" proposed a solution by setting a plurality of wave support units of different sizes; specifically, the wave foil combination section Including: the first construction section, the second construction section, and the third construc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/17F16C33/06F16C17/02
CPCF16C17/024F16C33/06G06F30/17G06F30/20
Inventor 尹丛勃宋和国陈雷裴满任军华
Owner 擎能动力科技(苏州)有限公司