Bearing arrangement with a back-up bearing, in particular for mounting the rapidly rotating shaft of a compressor

Abstract

The invention relates to a bearing arrangement for the rotatable mounting of a shaft (7) in relation to a housing (8), comprising a back-up bearing (9) which is designed as a rolling contact bearing, wherein the rolling contact bearing can absorb forces in the axial and radial direction and is designed in particular as an angular roller bearing, especially as a two-row angular ball bearing, wherein the rolling contact bearing (9) is substantially left open in the radial direction. The problem addressed by the invention is that of providing a bearing arrangement with a back-up bearing for a shaft, which bearing arrangement can better absorb in particular the forces occurring in the mounting of rapidly rotating, solid shafts.

Description

technical field [0001] The invention relates to a bearing arrangement with a backup bearing, in particular as part of a bearing of a rapidly rotating shaft of a compressor. Background technique [0002] Bearings are known in practice in which the shaft is mounted rotatably in, for example, magnetic bearings. The support mechanism includes a bearing arrangement with backup bearings, wherein at least one backup bearing accommodates the shaft if the magnetic bearing fails. During normal operation of at least one magnetic bearing, a backup bearing gap is formed between the peripheral side of the shaft and the peripheral side of the inner bearing ring of the backup bearing pointing toward the shaft. [0003] It is problematic to accommodate very fast rotating shafts of great weight in backup bearings in the event of failure of the magnetic bearing of the bearing, for example a solid shaft of a compressor which rotates at up to approximately 6000 revolutions per minute. In this ...

AI Technical Summary

Problems solved by technology

In this case very high forces which can damage the spare bearing occur

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