Thrust bearings, rotating machinery having thrust bearings, and methods of making thrust bearings
a technology of thrust bearings and bearings, which is applied in the direction of sliding contact bearings, shaft assemblies, mechanical equipment, etc., can solve the problems of affecting the service life of the bearing, so as to achieve uniform wear and long service life
Active Publication Date: 2021-03-11
HAMILTON SUNDSTRAND CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The solution provides thrust bearings with reduced structural distortion, long service life, uniform wear, and lower production costs compared to traditional welding methods, enhancing performance and efficiency.
Problems solved by technology
The welding process can be labor intensive and, because the annular plate is relatively thin, the welding process can distort the shape of the annular support plate due to the uneven heating of the annular support plate during the welding process.
The distortions in the annular support plate in turn alters the fluid film formation between the bearing and the thrust runner, inhibiting fluid film in certain locations and decreasing bearing performance.
Method used
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[0034]Reference will now be made to the drawings wherein like reference numerals identify similar structural features or aspects of the subject disclosure. For purposes of explanation and illustration, and not limitation, a partial view of an exemplary embodiment of a thrust bearing arrangement in accordance with the disclosure is shown in FIG. 1 and is designated generally by reference character 100. Other embodiments of thrust bearing arrangements, rotating machines having thrust bearing arrangements, and methods of making thrust bearing arrangements in accordance with the present disclosure, or aspects thereof, are provided in FIGS. 2-7, as will be described. The systems and methods described herein can be used for supporting rotating structures in rotating machines, such as turbines and compressors in air cycle machines, though the present disclosure is not limited to turbines and compressors, or to air cycle machines in general.
[0035]With reference to FIG. 1, a rotating machine...
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Abstract
A thrust bearing arrangement includes a top plate extending about a rotation axis, a thrust plate extending about the rotation axis and axially offset from the top foil plate, and a bump plate. The thrust plate is orthogonal relative to the rotation axis. The bump foil plate extends about the rotation axis, is axially offset from the thrust plate, and has an annular portion and two or more bump plate foil portions. The annular portion of the bump plate is circumferentially interrupted by the bump plate foil portions of the bump plate. Rotating machines and methods of making thrust bearing arrangements for rotating machines are also described.
Description
BACKGROUND[0001]The present disclosure generally relates to rotating machinery, and more particularly, to thrust bearings for supporting rotating machinery.BRIEF DESCRIPTION[0002]Hydrodynamic thrust bearings rely on relative rotation between a shaft, typically referred to as a thrust runner, and a bearing, to generate a non-linear fluid film between the thrust runner and the bearing. The fluid film forms when the relative rotation of the shaft and the bearing interacts with fluid to create and maintain pressurized wedges of fluid between the shaft and the bearing. The pressurized fluid wedge, in turn, transfers thrust or axial loads from the thrust runner to the bearing, the fluid typically being air or oil.[0003]Hydrodynamic thrust bearings commonly include a plurality of bearing foils, generally referred to as top foils, a plurality of bump foils, and an annular support plate. The plurality of top foils and the plurality of bump foils are typically welded to the annular support pl...
Claims
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IPC IPC(8): F16C17/04F16C43/00
CPCF16C17/042F16C2226/00F16C2223/30F16C43/00
Inventor SHAKIL, ALILOKHANDWALLA, MURTUZAFISKE, WILLIAM R.
Owner HAMILTON SUNDSTRAND CORP