System and method for determining condition of sleeve bearing

1 . A system for determining a condition of a sleeve bearing in a rotating machine, comprising:

one or more magnetic sensors adapted to be mounted on at least a body of a rotating machine or proximate to a sleeve bearing of the rotating machine; and

a processor electrically and communicatively coupled to the one or more magnetic sensors, wherein the processor is configured to:

receive a magnetic flux measurement from each magnetic sensor of the one or more magnetic sensors, wherein the magnetic flux measurement is made in at least one of: proximate to the sleeve bearing and the body of the rotating machine; and

determine a condition of the sleeve bearing based on the magnetic flux measurement, wherein the magnetic flux measurement corresponds to magnetic flux induced due to one or more magnetic tapes.

2 . The system of claim 1 , wherein the magnetic flux measurement corresponds to a leakage flux generated by the rotating machine.

3 . The system of claim 2 , wherein the processor is further configured to determine the condition of the sleeve bearing by:

transforming the leakage flux generated by the rotating machine to a spectral representation; and

determining the condition of the sleeve bearing based on the spectral representation, wherein the condition of the sleeve bearing is one of: a normal condition, an abnormal condition and a faulty condition.

4 . The system of claim 3 , wherein the faulty condition is one of: an oil whirl fault, an oil whip fault, and a bearing clearance fault.

5 . The system of claim 3 , wherein the processor is further configured to determine the condition of the sleeve bearing by:

analyzing the spectral representation at one or more frequencies, wherein the one or more frequencies are determined based on one or more of: a line frequency (fL), a rotation frequency (fr), and one or more scaling values; and

identifying the faulty condition of the sleeve bearing based on one or more spectral signatures at the one or more frequencies.

6 . The system of claim 1 , wherein the one or more magnetic tapes are disposed circumferentially on at least a portion of a shaft of the rotating machine.

7 . The system of claim 6 , wherein the processor is further configured to determine the condition of the sleeve bearing by:

tracking a change in the magnetic flux induced due to the one or more magnetic tapes over a defined time period;

estimating a deviation in a centerline of the shaft for the defined time period based on the change in the magnetic flux, wherein the deviation represents one of: an axial movement of the shaft and a radial movement of the shaft; and

determining the condition of the sleeve bearing based on the estimation.

8 . The system of claim 1 , wherein each magnetic tape of the one or more magnetic tapes comprises a plurality of first poles and a plurality of second poles.

9 . The system of claim 8 , wherein each first pole of the plurality of first poles is alternatively arranged with each second pole of the plurality of second poles in a lateral direction.

10 . The system of claim 8 , wherein each first pole of the plurality of first poles is alternatively arranged with each second pole of the plurality of second poles in a vertical direction.

11 . A method for determining a condition of a sleeve bearing in a rotating machine, comprising:

receiving, by a processor, a magnetic flux measurement from each magnetic sensor of one or more magnetic sensors, wherein the magnetic flux measurement is made at, at least one of: proximate to a sleeve bearing and a body of the rotating machine; and

determining, by the processor, a condition of the sleeve bearing based on the magnetic flux measurement, wherein the magnetic flux measurement corresponds to magnetic flux induced due to one or more magnetic tapes.

12 . The method of claim 11 , wherein determining the condition of the sleeve bearing comprises:

transforming, by the processor, a leakage flux generated by the rotating machine to a spectral representation; and

determining, by the processor, the condition of the sleeve bearing based on the spectral representation, wherein the condition of the sleeve bearing is one of: a normal condition, an abnormal condition and a faulty condition.

13 . The method of claim 12 , wherein the faulty condition is one of: an oil whirl fault, an oil whip fault, and a bearing clearance fault.

14 . The method of claim 12 , wherein determining the condition of the sleeve bearing comprises:

analyzing the spectral representation at one or more frequencies, wherein the one or more frequencies are determined based on one or more of: a line frequency (fL), a rotation frequency (fr), and one or more scaling values; and

identifying the faulty condition of the sleeve bearing based on one or more spectral signatures at the one or more frequencies.

15 . The method of claim 11 , wherein determining the condition of the sleeve bearing comprises:

tracking a change in the magnetic flux induced due to the one or more magnetic tapes over a defined time period;

estimating a deviation in a centerline of a shaft for the defined time period based on the change in the magnetic flux, wherein the deviation represents one of: an axial movement of the shaft and a radial movement of the shaft; and

determining the condition of the sleeve bearing based on the estimation.

16 . A system for determining a condition of a sleeve bearing in a rotating machine, comprising:

one or more magnetic sensors adapted to be mounted on at least a body of a rotating machine or proximate to a sleeve bearing of the rotating machine; and

a processor electrically and communicatively coupled to the one or more magnetic sensors, wherein the processor is configured to:

receive a magnetic flux measurement from each magnetic sensor of the one or more magnetic sensors, wherein the magnetic flux measurement is made in at least one of: proximate to the sleeve bearing and the body of the rotating machine; and

determine a condition of the sleeve bearing based on the magnetic flux measurement, wherein the magnetic flux measurement corresponds to a leakage flux generated by the rotating machine;

wherein the processor is further configured to determine the condition of the sleeve bearing by:

transforming the leakage flux generated by the rotating machine to a spectral representation;

determining the condition of the sleeve bearing based on the spectral representation, wherein the condition of the sleeve bearing is one of: a normal condition, an abnormal condition and a faulty condition;

analyzing the spectral representation at one or more frequencies, wherein the one or more frequencies are determined based on one or more of: a line frequency (fL), a rotation frequency (fr), and one or more scaling values; and

identifying the faulty condition of the sleeve bearing based on one or more spectral signatures at the one or more frequencies.

17 . The system of claim 16 , wherein the faulty condition is one of: an oil whirl fault, an oil whip fault, and a bearing clearance fault.