Aerodynamic radial foil bearing with forward and reverse rotation directions and dovetail-shaped structure

An air dynamic pressure, foil bearing technology, applied in the direction of rotating motion bearings, sliding contact bearings, bearings, etc., can solve the problems of rotation assembly error, shaft failure stability, etc., and achieve the effect of improving stability

Active Publication Date: 2021-05-28
宙斯能源动力科技(大连)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a dovetail-shaped air dynamic pressure radial foil bearing with positive and negative rotation directions to solve the problem that the rotation direction of the existing air dynamic pressure foil bearing is unidirectional when the bearing is installed. Mistakes can easily lead to shafting failure and existing aerodynamic foil bearings have poor operational stability

Method used

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  • Aerodynamic radial foil bearing with forward and reverse rotation directions and dovetail-shaped structure
  • Aerodynamic radial foil bearing with forward and reverse rotation directions and dovetail-shaped structure
  • Aerodynamic radial foil bearing with forward and reverse rotation directions and dovetail-shaped structure

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0033] An elliptical tile air dynamic pressure radial foil bearing with positive and negative rotation directions, comprising a bearing sleeve 1; a corrugated foil 2; a top foil 3;

[0034]The bearing sleeve 1 is a hollow cylinder used to fix the corrugated foil 2 and the top foil 3, and one or two or three dovetail structures 4 with an angle of 120 degrees to each other can be opened on the bearing sleeve 1 (When there is only one dovetail groove, the top foil 3 and the corrugated foil 2 are circular, as shown in the attached Figure 6 (a), with Figure 7 As shown in (a), when the relative dovetail groove 4 is used, the top foil 3 and the corrugated foil 2 are double-lobe separated, as shown in the attached Figure 6 (b), with Figure 7 As shown in (b), the top foil 3 and the corrugated foil 2 used when...

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Abstract

The invention discloses an aerodynamic radial foil bearing with forward and reverse rotation directions and a dovetail-shaped structure, belongs to the technical field of air bearings, and aims to solve the problems that the existing aerodynamic radial foil bearing rotates in one direction; when the bearing is installed, the rotating direction assembly error is generated, and the shaft system failure is easily caused, and the existing air dynamic pressure foil bearing has poorer stability during operation. According to the technical key points, at least one dovetail-shaped structure is formed in the inner wall of a bearing sleeve in the axial direction in a penetrating mode, a top foil is fixed by inserting the top foil into the dovetail-shaped structure, and the dovetail-shaped structure is characterized in that a dovetail-shaped boss is arranged in the middle of the dovetail-shaped structure, and two slender grooves allowing the top foil to be inserted are symmetrically formed in the two sides of the dovetail-shaped boss. By reducing the cross stiffness of the bearing during operation, the stability of the bearing during operation can be effectively improved, and moreover, as the two ends of the top foil are simultaneously inserted into the slender grooves in the two sides of the dovetail structure, and a corrugated foil is fixed below the top foil in a welding manner, the bearing can be suitable for the forward rotation direction and the reverse rotation direction of a rotor.

Description

technical field [0001] The invention belongs to the technical field of air bearings, and in particular relates to a dovetail-shaped air dynamic pressure radial foil bearing with positive and negative rotation directions. Background technique [0002] With the continuous development of modern science and technology, the role of high-speed rotating machinery in the fields of national defense, metallurgy, aviation, automobiles, etc. has been continuously enhanced, and bearings are an indispensable part of high-speed rotating machinery, and research on it is also increasing. Because it uses gas as a lubricant, gas foil bearings have the advantages of extremely small frictional power consumption, high rotational accuracy, no pollution, simple structure, and strong adaptability to high speeds, and have been widely used at present. However, with the increase in the speed requirements of rotating machinery, the traditional aerodynamic radial foil bearing is limited by its circular p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/02
CPCF16C17/024
Inventor 徐方程董泽达
Owner 宙斯能源动力科技(大连)有限公司
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