DETECTING ROTOR ANOMALIES DURING TRANSIENT SPEED OPERATIONS

• US 20160054171A1
• Filed: 08/21/2014
• Published: 02/25/2016
• Est. Priority Date: 08/21/2014
• Status: Active Grant

• Current Assignee: Baker Hughes, a GE Company, LLC (Baker Hughes Company)
• Original Assignee: General Electric Company
• Inventors: Maalouf, Mel Gabriel
• Granted Patent: US 10,908,014 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01D 21/003 Arrangements for testing or measuring for measuring vibrations G01H
• CPC Class Codes: F01D 21/14 responsive to other specific conditions
• CPC Class Codes: G01H 1/006 of the rotor of turbo machines

Abstract

A computing system for detecting anomalies in a rotor during a transient speed operation is provided which includes a first computing device programmed to identify a baseline sample set including a plurality of baseline samples. The computing device collects a plurality of current vibration samples from at least one vibration sensor during the transient speed operation, including a first current vibration sample including a first rotational speed measurement of the rotor and a first vibration measurement. The computing device selects one or more baseline samples from the baseline sample set based at least in part on the first rotational speed. Each baseline sample includes a baseline vibration value. The computing device compares the first vibration measurement to one or more baseline vibration values of the selected one or more baseline samples. The computing device transmits an alert to a monitoring device based at least in part on the comparing.

Claims

1. A computing system for detecting anomalies in a rotor during a transient speed operation, said computing system comprising a first computing device programmed to:

identify a baseline sample set, wherein the baseline sample set includes a plurality of baseline samples associated with the rotor;

collect a plurality of current vibration samples from at least one vibration sensor during the transient speed operation, the plurality of current vibration samples including a first current vibration sample including a first rotational speed measurement of the rotor and a first vibration measurement;

select one or more baseline samples from the baseline sample set based at least in part on the first rotational speed, each baseline sample including a baseline vibration value;

compare the first vibration measurement to one or more baseline vibration values of the selected one or more baseline samples; and

transmit an alert to a monitoring device based at least in part on the comparing.

2. The computing system of claim 1, wherein identifying a baseline sample set includes identifying a historical sample set as the baseline sample set, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

3. The computing system of claim 1, wherein identifying a baseline sample set includes computing the baseline sample set from a plurality of historical sample sets, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

4. The computing system of claim 1, wherein each baseline sample further includes a baseline rotational speed, wherein selecting one or more baseline samples further includes identifying a first baseline sample from the baseline sample set having a baseline rotational speed nearest to the first rotational speed.

5. The computing system of claim 1, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

averaging the one or more baseline vibration values to generate a baseline average; and

comparing the first vibration measurement to the baseline average.

6. The computing system of claim 1, wherein the first vibration measurement includes a first amplitude measurement and a first phase measurement, wherein each baseline vibration value includes a baseline amplitude value and a baseline phase value, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

comparing the first amplitude measurement to the baseline amplitude value; and

comparing the first phase measurement to the baseline phase value.

7. The computing system of claim 1, wherein identify a baseline sample set includes receiving, from an operator of said computing system, an indication of a historical sample set as the baseline sample set, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

8. A computer-based method for detecting anomalies in a rotor during a transient speed operation, said method uses a first computing device including a processor and a memory, said method comprising:

identifying, in the memory, a baseline sample set, wherein the baseline sample set includes a plurality of baseline samples associated with the rotor;

collecting a plurality of current vibration samples from at least one vibration sensor during the transient speed operation, the plurality of current vibration samples including a first current vibration sample including a first rotational speed measurement of the rotor and a first vibration measurement;

selecting one or more baseline samples from the baseline sample set based at least in part on the first rotational speed, each baseline sample including a baseline vibration value;

comparing, by the processor, the first vibration measurement to one or more baseline vibration values of the selected one or more baseline samples; and

transmitting an alert to a monitoring device based at least in part on the comparing.

9. The method of claim 8, wherein identifying a baseline sample set includes identifying a historical sample set as the baseline sample set, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

10. The method of claim 8, wherein identifying a baseline sample set includes computing the baseline sample set from a plurality of historical sample sets, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

11. The method of claim 8, wherein each baseline sample further includes a baseline rotational speed, wherein selecting one or more baseline samples further includes identifying a first baseline sample from the baseline sample set having a baseline rotational speed nearest to the first rotational speed.

12. The method of claim 8, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

averaging the one or more baseline vibration values to generate a baseline average; and

comparing the first vibration measurement to the baseline average.

13. The method of claim 8, wherein the first vibration measurement includes a first amplitude measurement and a first phase measurement, wherein each baseline vibration value includes a baseline amplitude value and a baseline phase value, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

comparing the first amplitude measurement to the baseline amplitude value; and

comparing the first phase measurement to the baseline phase value.

14. The method of claim 8, wherein identifying a baseline sample set includes receiving, from an operator of the first computing device, an indication of a historical sample set as the baseline sample set, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

15. At least one non-transitory computer-readable storage media having computer-executable instructions embodied thereon, wherein when executed by at least one processor of a first computing device, the computer-executable instructions cause the processor to:

identify a baseline sample set, wherein the baseline sample set includes a plurality of baseline samples associated with a rotor;

collect a plurality of current vibration samples from at least one vibration sensor during a transient speed operation of the rotor, the plurality of current vibration samples including a first current vibration sample including a first rotational speed measurement of the rotor and a first vibration measurement;

select one or more baseline samples from the baseline sample set based at least in part on the first rotational speed, each baseline sample including a baseline vibration value;

compare the first vibration measurement to one or more baseline vibration values of the selected one or more baseline samples; and

transmit an alert to a monitoring device based at least in part on the comparing.

16. The computer-readable storage media of claim 15, wherein identifying a baseline sample set includes identifying a historical sample set as the baseline sample set, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

17. The computer-readable storage media of claim 15, wherein identifying a baseline sample set includes computing the baseline sample set from a plurality of historical sample sets, wherein the historical sample set includes a plurality of historical vibration samples of the rotor during a past transient speed operation.

18. The computer-readable storage media of claim 15, wherein each baseline sample further includes a baseline rotational speed, wherein selecting one or more baseline samples further includes identifying a first baseline sample from the baseline sample set having a baseline rotational speed nearest to the first rotational speed.

19. The computer-readable storage media of claim 15, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

averaging the one or more baseline vibration values to generate a baseline average; and

comparing the first vibration measurement to the baseline average.

20. The computer-readable storage media of claim 15, wherein the first vibration measurement includes a first amplitude measurement and a first phase measurement, wherein each baseline vibration value includes a baseline amplitude value and a baseline phase value, wherein comparing the first vibration measurement to one or more baseline vibration values further includes:

comparing the first amplitude measurement to the baseline amplitude value; and

comparing the first phase measurement to the baseline phase value.