Turbomachine lubricating oil analyzer system, computer program product and related methods

Patent metadata

Field	Value
Publication number	US-9354221-B2
Application number	US-201313872488-A
Country	US
Kind code	B2
Filing date	Apr 29, 2013
Priority date	Apr 29, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Various embodiments of the invention include a system having: at least one computing device at least one computing device configured to monitor a lubrication oil by performing actions including: determining an initial ideal remaining life for the lubrication oil; determining a temperature-based remaining life for the lubrication oil based upon a temperature measurement of the lubrication oil; calculating a contamination factor of the lubrication oil based upon a contamination sample of the lubrication oil; determining an updated ideal life remaining for the lubrication oil based upon the contamination factor, the initial ideal remaining life, and the temperature-based remaining life; and determining an actual life remaining for the lubrication oil based upon the updated ideal life remaining and a life loss factor.

First claim

We claim:

1. A system comprising:
at least one computing device configured to monitor a lubrication oil by performing actions including:
determining, by a processor, an initial ideal remaining life for the lubrication oil;
determining a temperature-based remaining life for the lubrication oil based upon a temperature measurement of the lubrication oil;
calculating a contamination factor of the lubrication oil based upon a contamination sample of the lubrication oil,
wherein the contamination factor is calculated based upon either: a measurement of at least one of the following properties of the lubrication oil: a ferrous particle count, a water content, a dielectric constant or an international organization for standardization (ISO) level particle count; or an averaged international organization for standardization (ISO) level particle count calculated from averaging a plurality of ISO level particle counts for the lubrication oil;
determining an updated ideal life remaining for the lubrication oil based upon the contamination factor, the initial ideal remaining life, and the temperature-based remaining life; and
determining an actual life remaining for the lubrication oil based upon the updated ideal life remaining and a life loss factor.

2. The system of claim 1 , wherein the at least one computing device is further configured to determine the life loss factor according to the following:
life loss factor=[initial ideal remaining life: temperature-based remaining life]×contamination factor.

3. The system of claim 2 , wherein the at least one computing device is further configured to determine an elapsed time between samplings of the lubrication oil based upon a sample frequency of the lubrication oil.

4. The system of claim 3 , wherein the determining of the actual life remaining includes determining an actual life lost according to the following:
actual life lost=life loss factor×sample frequency of the lubrication oil.

5. The system of claim 4 , wherein the determining of the updated ideal life remaining for the lubrication oil includes calculating the updated ideal life remaining according to:
updated ideal life remaining=initial ideal life remaining−actual life lost.

6. The system of claim 1 , wherein the determining of the actual life remaining for the lubrication oil includes calculating the actual life remaining according to:
actual life remaining=updated ideal life remaining/life loss factor.

7. The system of claim 1 , wherein the temperature-based remaining life for the lubrication oil is calculated based upon an Arrhenius Reaction Rate of the lubrication oil.

8. A computer program product comprising program code, which when executed by at least one computing device, causes the at least one computing device to monitor a lubrication oil by performing actions including:
determining, by a processor, an initial ideal remaining life for the lubrication oil;
determining a temperature-based remaining life for the lubrication oil based upon a temperature measurement of the lubrication oil;
calculating a contamination factor of the lubrication oil based upon a contamination sample of the lubrication oil,
wherein the contamination factor is calculated based upon either: a measurement of at least one of the following properties of the lubrication oil: a ferrous particle count, a water content, a dielectric constant or an international organization for standardization (ISO) level particle count; or an averaged international organization for standardization (ISO) level particle count calculated from averaging a plurality of ISO level particle counts for the lubrication oil;
determining an updated ideal life remaining for the lubrication oil based upon the contamination factor, the initial ideal remaining life, and the temperature-based remaining life; and
determining an actual life remaining for the lubrication oil based upon the updated ideal life remaining and a life loss factor.

9. The computer program product of claim 8 , wherein the program code causes the at least one computing device to determine the life loss factor according to the following:
life loss factor=[initial ideal remaining life: temperature-based remaining life]×contamination factor.

10. The computer program product of claim 9 , wherein the program code causes the at least one computing device to further obtain a sample frequency of the lubrication oil.

11. The computer program product of claim 10 , wherein the determining of the actual life remaining includes determining an actual life lost according to the following:
actual life lost=life loss factor×sample frequency of the lubrication oil.

12. The computer program product of claim 11 , wherein the determining of the updated ideal life remaining for the lubrication oil includes calculating the updated ideal life remaining according to:
updated ideal life remaining=initial ideal life remaining−actual life lost.

13. The computer program product of claim 8 , wherein the determining of the actual life remaining for the lubrication oil includes calculating the actual life remaining according to:
actual life remaining=updated ideal life remaining/life loss factor.

14. A system comprising:
at least one computing device configured to analyze a lubrication oil from a turbomachine by performing actions including:
predicting, by a processor, an initial ideal remaining life for the lubrication oil;
determining a temperature-based remaining life of the lubrication oil based upon a measured temperature of the lubrication oil;
determining a contamination factor of the lubrication oil based upon a measured contaminant level of the lubrication oil,
wherein the contamination factor is determined based upon either: a measurement of at least one of the following properties of the lubrication oil: a ferrous particle count, a water content, a dielectric constant or an international organization for standardization (ISO) level particle count; or an averaged international organization for standardization (ISO) level particle count calculated from averaging a plurality of ISO level particle counts for the lubrication oil;
determining a life loss factor of the lubrication oil based upon the initial ideal remaining life, the temperature-based remaining life, and the contamination factor;
determining an amount of life lost from the lubrication oil based upon the life loss factor and a sampled frequency of the lubrication oil;
calculating a refined ideal remaining life for the lubrication oil based upon the amount of life lost and the initial ideal remaining life; and
predicting an actual remaining life of the lubrication oil based upon the refined ideal remaining life and the life loss factor.

15. The system of claim 14 , wherein the measured temperature of the lubrication oil is measured at a common location on the turbomachine as the measured contaminant level.

16. The system of claim 15 , wherein the measured temperature of the lubrication oil is measured at a substantially same time as the measured contaminant level.

Assignees

• Gen Electric

Inventors

• O'Donnell Keegan Saunders
• Fitzpatrick Matthew Paul

Classifications

• G01N33/2888 Primary

  Lubricating oil characteristics, e.g. deterioration (lubricating properties G01N33/30) · CPC title

• F02D2200/023

  Temperature of lubricating oil or working fluid · CPC title

• G01N33/28 Primary

  Oils {, i.e. hydrocarbon liquids} (edible oils or edible fats G01N33/03) · CPC title