Early warning and protection for heat exchange systems

• US 20060217873A1
• Filed: 01/26/2006
• Published: 09/28/2006
• Est. Priority Date: 01/26/2005
• Status: Active Grant

• Current Assignee: Xylem Ip Holdings LLC (Xylem, Inc.)
• Original Assignee: ITT Industries (ITT, Inc.)
• Inventors: Phillips, David L., McDonough, William B., Santos, Ned
• Granted Patent: US 7,300,321 B2
• Time in Patent Office: Days
• US Class Current: 701/114
• CPC Class Codes: F01P 11/18 concerning coolant pressure, coolant flow, or liquid-coolant level
• CPC Class Codes: F01P 2023/08 Microprocessor; Microcomputer
• CPC Class Codes: F01P 2025/04 Pressure
• CPC Class Codes: F01P 2025/64 Number of revolutions
• CPC Class Codes: F01P 2031/00 Fail safe
• CPC Class Codes: F01P 2031/36 Failure of coolant pump
• CPC Class Codes: F01P 2050/02 Marine engines

Abstract

Method and apparatus are provided for warning a user or operator about a malfunction in a pump and/or engine of a marine vessel or another suitable device or equipment, featuring steps of: comparing a sensed pressure differential at a sensed RPM when the pump/engine is running to a learned database having a pressure differential versus RPM curve; and providing an indication to the operator when there is a change in the relationship that exceeds a predetermined relationship. The apparatus may include an active intelligence unit or module for making the comparison and providing the indication according to the invention.

Claims

1. A method for warning an operator about a malfunction in a pump and/or engine of a marine vessel or another suitable device or equipment, including a malfunction in a heat exchange system of the engine for a marine vessel or other suitable non-marine vessel, as well as other suitable non-marine vessel such as industrial equipment and circulation and industrial applications, characterized in that the method includes the steps of:

comparing a sensed pressure differential at a sensed RPM when the pump/engine is running to a learned database having a pressure differential versus RPM curve; and

providing an indication to the operator when there is a change in the relationship that exceeds a predetermined relationship.

2. A method according to claim 1, wherein the pressure differential versus RPM curve is updated in the learned database based on the sensed pressure differential at the sensed RPM.

3. A method according to claim 1, wherein the pressure differential versus RPM curve is built in the learned database using a multiplicity of sensed pressure differentials at sensed RPMs.

4. A method according to claim 1, wherein the method includes mounting a first transducer at an inlet side of the heat exchange system and mounting a second transducer at an outlet side of the heat exchange system.

5. A method according to claim 4, wherein the method includes providing first and second transducer signal from the first and second transducers to an active intelligence module for determining the sensed pressure differential.

6. A method according to claim 1, wherein the method includes mounting an RPM sensor in relation to the engine, and providing an RPM sensor signal from the RPM sensor to an active intelligence module for determining the sensed RPM.

7. A method according to claim 1, wherein the learned database includes the number of operating hours of the pump/engine that is used to determine if the change in the relationship exceeds the predetermined relationship, including providing a service warning when the number of operating hours exceeds a predetermined number.

8. A method according to claim 1, wherein the learned database includes types and numbers of malfunctions detected in the pump/engine that are used to determine if the change in the relationship exceeds the predetermined relationship.

9. A method according to claim 1, wherein a plurality of sensed pressure differentials at sensed RPMs are compared to the pressure differential versus RPM curve in the learned database to determine if the change in the relationship exceeds the predetermined relationship.

10. A method according to claim 1, wherein the pressure differential versus RPM curve in the learned database includes more than one pressure differentials at each RPM.

11. A method according to claim 1, wherein the method includes using a separate learned database having a separate pressure differential versus RPM curve for each pump/engine in a multi-engine system.

12. A method according to claim 1, wherein the learned database is stored in an active intelligence module that may be interrogated using a personal computer, laptop, personal digital assistant (PDA) or other suitable device.

13. A method according to claim 1, wherein the learned database includes a target baseline curve containing information about target pressure differential versus RPM.

14. A method according to claim 1, wherein the indication is an audio or visual warning.

15. Apparatus for warning an operator about a malfunction in a pump and/or engine of a marine vessel or another suitable device or equipment, including a malfunction in a heat exchange system for a marine vessel or other suitable non-marine vessel, as well as other suitable non-marine vessel such as industrial equipment and circulation and industrial applications, characterized in that the apparatus includes:

an active intelligence module for comparing a sensed pressure differential at a sensed RPM when the pump/engine is running to a learned database having a pressure differential versus RPM curve; and

a device for providing an indication to the operator when there is a change in the relationship that exceeds a predetermined relationship.

16. Apparatus according to claim 15, wherein the pressure differential versus RPM curve is updated in the learned database based on the sensed pressure differential at the sensed RPM.

17. Apparatus according to claim 15, wherein the pressure differential versus RPM curve is built in the learned database using a multiplicity of sensed pressure differentials at sensed RPMs.

18. Apparatus according to claim 15, wherein the method includes mounting a first transducer at an inlet side of the heat exchange system and mounting a second transducer at an outlet side of the heat exchange system.

19. Apparatus according to claim 18, wherein the method includes providing first and second transducer signal from the first and second transducers to an active intelligence module for determining the sensed pressure differential.

20. Apparatus according to claim 15, wherein the method includes mounting an RPM sensor in relation to the engine, and providing an RPM sensor signal from the RPM sensor to an active intelligence module for determining the sensed RPM.

21. Apparatus according to claim 15, wherein the learned database includes the number of operating hours of the pump/engine that is used to determine if the change in the relationship exceeds the predetermined relationship, including providing a service warning when the number of operating hours exceeds a predetermined number.

22. Apparatus according to claim 15, wherein the learned database includes types and numbers of malfunctions detected in the pump/engine that are used to determine if the change in the relationship exceeds the predetermined relationship.

23. Apparatus according to claim 15, wherein a plurality of sensed pressure differentials at sensed RPMs are compared to the pressure differential versus RPM curve in the learned database to determine if the change in the relationship exceeds the predetermined relationship.

24. Apparatus according to claim 15, wherein the pressure differential versus RPM curve in the learned database includes more than one pressure differentials at each RPM.

25. Apparatus according to claim 15, wherein the method includes using a separate learned database having a separate pressure differential versus RPM curve for each pump/engine in a multi-engine system.

26. Apparatus according to claim 15, wherein the learned database is stored in an active intelligence module that may be interrogated using a personal computer, laptop, personal digital assistant (PDA) or other suitable device.

27. Apparatus according to claim 15, wherein the learned database includes a target baseline curve containing information about target pressure differential versus RPM.

28. Apparatus according to claim 15, wherein the indication is an audio or visual warning.

29. A method for warning the user about a malfunction in an pump/engine of a marine vessel or another suitable device or equipment, including a malfunction in a heat exchange system of the pump/engine for a marine vessel or other suitable non-marine vessel, as well as other suitable non-marine vessel such as industrial equipment and circulation and industrial applications, characterized in that the method includes the steps of:

sensing a relationship between two parameters when the pump/engine is running, including a pressure differential and the RPMs of the engine; and

providing an indication to the user when there is a change in the relationship that exceeds a predetermined relationship.

30. A method according to claim 29, wherein the pressure differential is measured between the inlet and outlet of the water cooling system of the engine.

31. A method according to claim 29, wherein the indication includes shutting off the engine.

32. A method according to claim 29, wherein the indication includes providing an audible or visual alarm warning, or some combination thereof, including providing information about the malfunction.

33. A method according to claim 29, wherein the method includes learning the predetermined relationship and storing the same in a memory device.

34. A method according to claim 29, wherein the method includes updating the predetermined relationship based on a given set of parameters as the pump/engine continues to run.