Device for monitoring the degradation of rolling bearings
AssigneeSafran Electrical & Power
InventorJean-Michel Bernard Paul Chastagnier
Life of this patent
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Abstract
The present invention relates to a device (1) for monitoring the degradation of rolling bearings (15a, 15b) in a rotating machine (10) comprising at least two rolling bearings (15a, 15b) each having two concentric rings (16-18) rotating relative to each other, at least one ring (17, 18) of each bearing (15a) being rotationally connected to a ring (17, 18) of another bearing (15b). The device (1) comprises a member (30) for measuring the speed of rotation (ω1) of the rotationally connected rings (17, 18), and data processing means suitable for detecting a variation in the speed of rotation (ω1) of the rotationally connected rings (17, 18), which variation is representative of degradation of a bearing (15).
Claims20
A device for monitoring the degradation of rolling bearings in a rotating machine comprising a shaft and a bore, the device comprising:
- at least two rolling bearings each having two concentric rings in rotation relative to each other, at least one concentric ring of the concentric rings of each rolling bearing being rotatably connected to a ring of another one of the rolling bearings,
- a member for measuring a speed of rotation of the rotatably connected concentric rings, and
- data processing means adapted to detect a variation in said measured speed of rotation (ω1) with respect to a speed of rotation of the shaft or bore of the rotating machine, and configured to determine whether said detected variation is normal or representative of a degradation of one of the rolling bearings (15).
A method for monitoring the degradation of rolling bearings in a rotating machine comprising a shaft and a bore, the method comprising at least two rolling bearings each having two concentric rings in rotation relative to each other, at least one concentric ring of the concentric rings of each rolling bearing being rotatably connected to a concentric ring of another one of the rolling bearings,
- the method comprising, when said rotating machine is in rotation, the steps of:
- measuring a speed of rotation of the rotatably connected concentric rings by a measuring member;
- detecting a variation in the measured speed of rotation with respect to a speed of rotation of the shaft or bore of the rotating machine, said variation being representative of a degradation of one of the rolling bearings;
- reporting a degradation of one of the rolling bearings.
Dependencies are inferred from the claim text.