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Axial bearing arrangement for a drive shaft of a centrifugal compressor

A centrifugal compressor, axial bearing technology, applied in the direction of bearings for rotary motion, components of pumping devices for elastic fluids, shafts and bearings, etc., can solve the problem of jamming, shortening the life of centrifugal compressors, Problems such as deterioration of parallel positioning of two axial bearing plates

Active Publication Date: 2019-05-21
DANFOSS AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The parallel positioning of the first axial bearing plate and the second axial bearing plate may be deteriorated by tolerances in the installation and assembly of the compressor or by mechanical stresses introduced into the axial bearing arrangement due to the aforementioned uneven thermal expansion
This can cause the axial bearing unit to seize and shorten the life of the centrifugal compressor

Method used

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  • Axial bearing arrangement for a drive shaft of a centrifugal compressor
  • Axial bearing arrangement for a drive shaft of a centrifugal compressor
  • Axial bearing arrangement for a drive shaft of a centrifugal compressor

Examples

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Embodiment Construction

[0054] figure 1 A centrifugal compressor 2 is indicated, which may be, for example, a two-stage centrifugal compressor. The centrifugal compressor 2 comprises a drive shaft 3 extending along a longitudinal axis A.

[0055] According to the embodiment shown in the figures, the drive shaft 3 comprises an intermediate bearing part 4, an impeller part 5 arranged at a first axial end of the intermediate bearing part 4, and a second shaft arranged at the intermediate bearing part 4. to the drive section 6 at the end. Specifically, the intermediate bearing portion 4 includes a cylindrical bearing portion 7 and a radial flange portion 8 extending radially outward from the cylindrical bearing portion 7 . The radial flange portion 8 has a flat disc shape and comprises a first axial end face 8.1 and a second axial end face 8.2 opposite to the first axial end face 8.1.

[0056] For example, the drive shaft 3 can be made of high-strength steel, ceramic material, or a combination thereof...

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PUM

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Abstract

Axial bearing arrangement for a drive shaft of a centrifugal compressor The axial bearing arrangement comprises a first axial bearing plate (12) and a second axial bearing plate (13) each having an annular ring shape, the first axial bearing plate (12) having a first surface (12.1) axially facing the second axial bearing plate (13) and a second surface (12.2) opposite to the respective first surface (12.1), the second axial bearing plate (13) having a first surface (13.1) axially facing the first axial bearing plate (12) and a second surface (13.2) opposite to the respective first surface (13.1),a spacer ring (14) clamped between the first surfaces (12.1, 13.1) of the first and second axial bearing plates (12, 13), the spacer ring (14) defining an axial distance between the first and second axial bearing plates (12, 13),and a bearing sleeve (15) abutting the second surface (13.2) of the second axial bearing plate (13) and being secured to a compressor block (16). The axial bearing arrangement includes an elastic element (22) axially biasing the first and second axial bearing plates (12, 13) and the spacer ring (14) with a predetermined force against an abutment surface (17) of thebearing sleeve (15).

Description

technical field [0001] The invention relates to an axial bearing arrangement for a drive shaft of a centrifugal compressor. Background technique [0002] As known, an axial bearing arrangement for a drive shaft of a centrifugal compressor may comprise: [0003] - a first axial bearing plate and a second axial bearing plate (also referred to as a first thrust plate and a second thrust plate), the first axial bearing plate and the second axial bearing plate being parallel and each having an annular ring shape, the first axial bearing plate has a first surface facing the second axial bearing plate in the axial direction and a second surface opposite to the first surface of the first axial bearing plate, the The second axial bearing plate has a first surface axially facing the first axial bearing plate and a second surface opposite the first surface of the second axial bearing plate, [0004] - a spacer ring sandwiched between the first surface of the first axial bearing plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06F04D17/10F04D29/057
CPCF04D17/10F16C32/0614F16C32/0674F16C32/0685F16C32/0692F16C2360/44F04D29/0513F04D29/057F16C27/02F16C17/04F04D29/059
Inventor 帕特利斯·博尼弗尔伊夫斯·罗森
Owner DANFOSS AS