Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-11-24
2000-08-08
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
340648, 384499, 384513, G08B 2100
Patent
active
061008095
ABSTRACT:
A bearing detection system for an electrical generator (10) includes auxiliary bearings (29) for supporting a rotating shaft (39) upon failure of main bearings (62). The auxiliary bearings (29) are mounted on the shaft and have a slight gap (64) between their outside diameters and bearing liners 33. The gap corresponds to the main bearing permissible wear. During normal functioning of the main bearing, the auxiliary bearing frame (34) rotates with the shaft and a magnet (35) with a small clearance between its face and auxiliary bearing outer ring (32) forces the synchronized rotation of inner (37) and outer (32) races. The auxiliary bearing outer ring or race (32) has a coaxial groove (31) on its outer diameter and a detection sensor (30), mounted on the bearing liner, gives a signal per rotation of the shaft to a control circuit (40). The control circuit (40) determines the rotational status of the auxiliary bearings outer ring (32) by counting the number of impulses generated by the circuit (40) when the groove crosses the sensor's magnetic fields. The circuit (40) detects the moment when any auxiliary bearing comes in contact with the bearing liner and results in no impulses being generated. The outer ring (32) stops rotating as the main bearing wear depth reaches the predetermined limit. In this case, the circuit (40) triggers the failure signal (71) to indicate that the main bearings need replacement.
REFERENCES:
patent: 3508241 (1970-04-01), Potter
patent: 4063786 (1977-12-01), Rall
patent: 4074575 (1978-02-01), Bergman
patent: 4167734 (1979-09-01), Logan et al.
patent: 4237454 (1980-12-01), Meyer
patent: 4425010 (1984-01-01), Bryant et al.
patent: 4584865 (1986-04-01), Hutchins
patent: 4641978 (1987-02-01), Kapich
patent: 4875785 (1989-10-01), Santos
patent: 4924180 (1990-05-01), Nasr et al.
patent: 5602437 (1997-02-01), Shahamat
patent: 5796349 (1998-08-01), Klein
patent: 5805080 (1998-09-01), Lemoine et al.
Guha Ratan
Hsieh Samuel
Kasdan Leon
Murugan Muthu
Novoselsky Yefim
Allied-Signal Inc.
Pham Toan
Wu Daniel J.
Zak, Jr. Esq. William J.
LandOfFree
Bearing wear detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bearing wear detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bearing wear detection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1154352