Apparatus and method for fluid analysis

• US 6,810,718 B2
• Filed: 01/10/2003
• Issued: 11/02/2004
• Est. Priority Date: 11/19/1999
• Status: Expired due to Term

• Current Assignee: Battelle Memorial Institute
• Original Assignee: Battelle Memorial Institute
• Inventors: Wilson, Bary W., Reeves, James H., Peters, Timothy J., Shepard, Chester L.
• Primary Examiner(s): Larkin, Daniel S.
• Application Number:
  US10/339,811
• Publication Number:
  US 20030101801A1
• Time in Patent Office: 662 Days
• Field of Search: 73/540.1, 73/530.1, 73/530.5, 73/540.2, 73/540.7, 250/339.09, 250/343, 356/246, 702/108, 702/130
• US Class Current: 73/54.01
• CPC Class Codes: G01N 11/08 by measuring pressure required to produce a known flow
• CPC Class Codes: G01N 23/223 by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
• CPC Class Codes: G01N 33/2858 Metal particles
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30

Abstract

The present invention is an apparatus and method for analyzing a fluid used in a machine or in an industrial process line. The apparatus has at least one meter placed proximate the machine or process line and in contact with the machine or process fluid for measuring at least one parameter related to the fluid. The at least one parameter is a standard laboratory analysis parameter. The at least one meter includes but is not limited to viscometer, element meter, optical meter, particulate meter, and combinations thereof.

Claims

1. A machine fluid analysis system comprising:

a plurality of different sensors contacting a fluid under pressure of a machine for detecting different properties of the fluid;

a controller operable to initiate acquisition cycles of and to collect data from the plurality of sensors; and

a two-way wireless communicator coupled to the controller for receiving interrogation signals and for transmitting the collected data to a remote location.

2. The system of claim 1 wherein each of the different sensors detects a standard laboratory analysis parameter of the fluid.

3. The system of claim 2 wherein the controller is operable to initiate an emergency call through the two-way communicator when a property detected by the sensors exceeds a predetermined limit.

4. The system of claim 1 wherein the controller is operable to collect data for use in determining trends and predicting maintenance schedules of the machine.

5. The system of claim 1 wherein the plurality of sensors are selected from the group consisting of optical meter, viscometer, element meter, and particle counter.

6. The system of claim 1 wherein the controller is operable to collect and store a substantially continuous log of data from the sensors over an extended period of time.

7. The system of claim 1 wherein one of the sensors is an X-ray fluorescence meter including an X-ray source producing source X-rays, a thin walled polymeric tube substantially transparent to the source X-rays and providing a flow path past the X-ray source, and an X-ray detector for receiving an X-ray fluorescence signal from the fluid in the tube.

8. The system of claim 1 wherein one of the sensors is an optical meter including an optical source operable to pass optical energy through the machine fluid and an optical detector operable to receive the optical energy passed through the machine fluid, and wherein there is no optical dispersive element between the optical energy source and the machine fluid or between the machine fluid and the detector.

9. The system of claim 1 wherein one of the sensors is a viscometer including a viscometer tube, a differential pressure transducer mounted on opposite ends of the viscometer tube, and a flowmeter in line with the viscometer tube.

10. A method for determining trends and predicting maintenance schedules of a machine comprising:

determining a plurality of properties of a machine fluid with sensors in contact with the machine fluid under pressure of the machine;

collecting data for use in determining trends and predicting maintenance schedules of the machine from the sensors with a controller;

receiving interrogation signals with a two-way wireless communicator coupled to the controller; and

transmitting the collected data to a remote location with the two-way wireless communicator.

11. The method of claim 10 further comprising transmitting an emergency call with the two-way communicator when a property detected by the sensors exceeds a predetermined limit.

12. The method of claim 10 wherein the collected data includes a substantially continuous log of data from the sensors over an extended period of time.

13. The method of claim 12 wherein collecting data includes storing the data in the memory of a programmable embedded controller.

14. The method of claim 10 wherein the plurality of properties are standard laboratory analysis parameters of the machine fluid.

15. The method of claim 14 wherein the plurality of properties are selected from the group consisting of viscosity, pentane insolubles, soot, additive package, oxidation or oil polymer breakdown products, nitration, sulfation, fuel dilution, water concentration, and concentration of a specific element.

16. The method of claim 10 wherein the machine includes an engine and the machine fluid is crankcase oil.

17. A method for machine fluid analysis comprising:

initiating acquisition cycles of a plurality of sensors in contact with a machine fluid with a controller to determine a plurality of properties of the machine fluid;

collecting data from the sensors with the controller for determining trends and predicting maintenance schedules of the machine; and

in response to a download request, transmitting the collected data to a remote location with a two-way wireless communicator operably coupled to the controller.

18. The method of claim 17 further comprising providing machine fluid to different ones of the plurality of sensors at substantially different temperatures.

19. The method of claim 17 further comprising transmitting an emergency call with the two-way communicator when a property detected by the sensors exceeds a predetermined limit.

20. The method of claim 17 wherein the collected data includes a substantially continuous log of data from the sensors over an extended period of time.

21. The method of claim 20 wherein collecting data includes storing the data in the memory of a programmable embedded controller.

22. The method of claim 17 wherein the plurality of properties are standard laboratory analysis parameters of the machine fluid.

23. The method of claim 22 wherein the plurality of properties are selected from the group consisting of viscosity, pentane insolubles, soot, additive package, oxidation or oil polymer breakdown products, nitration, sulfation, fuel dilution, water concentration, and concentration of a specific element.

24. The method of claim 23 whrein the machine includes an engine and the machine fluid is crankcase oil.

25. An X-ray fluorescence meter for measuring the concentration of elements in a fluid comprising:

an X-ray source providing source X-rays in an energy range from about 5 KeV to about 30 KeV;

a thin walled polymeric tube of low element weight composition and substantially transparent to the source X-rays, the tube providing a flow path past the X-ray source for flowing a fluid there through whereby the fluid can intercept the source X-rays and produce an X-ray fluorescence signal;

an X-ray detector for receiving an X-ray fluorescence signal from the fluid in the tube;

a multi-channel analyzer for counting the number of X-rays photons in specific energy ranges; and

software for quantitative determination of the relative and absolute concentrations of elements in the fluid.

26. The X-ray fluorescence meter of claim 25 wherein the fluid is machine fluid.

27. The X-ray fluorescence meter of claim 25 wherein the fluid is industrial process fluid.

28. The X-ray fluorescence meter of claim 25 wherein the flow of the fluid is intermittent.

29. The X-ray fluorescence meter of claim 25 wherein the flow of the fluid is substantially continuous.

30. The X-ray fluorescence meter of claim 25 wherein the tube includes polyamide.

31. The X-ray fluorescence meter of claim 25 in combination with

at least one second sensor for detecting at least one additional property of the fluid;

a controller operable to initiate acquisition cycles of and to collect data from the X-ray fluorescence meter and the second sensor; and

a two-way wireless communicator coupled to the controller for receiving interrogation signals and for transmitting the collected data to a remote location.

32. The system of claim 7 wherein the X-ray fluorescence meter is an X-ray fluorescence meter according to claim 25.