System for monitoring plant equipment

• US 8,868,242 B2
• Filed: 05/08/2013
• Issued: 10/21/2014
• Est. Priority Date: 01/28/2010
• Status: Active Grant

• Current Assignee: Holcim Incorporated (LafargeHolcim, Ltd.)
• Original Assignee: Holcim Incorporated (LafargeHolcim, Ltd.)
• Inventors: Loutfi, Moheb Y.
• Primary Examiner(s): HARTMAN JR, RONALD D
• Application Number:
  US13/889,453
• Publication Number:
  US 20130323127A1
• Time in Patent Office: 531 Days
• Field of Search: 700/17, 700/83, 700/265, 702/56
• US Class Current: 700/265
• CPC Class Codes: F27B 7/42 Arrangement of controlling, monitoring, alarm or like devices
• CPC Class Codes: G01N 19/08 Detecting presence of flaws or irregularities
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold

Abstract

A system for monitoring plant equipment is provided. Another aspect provides an automated analysis system wherein software instructions operably compare sensor data to predefined valves and determine mechanical problems in multiple machines. In another aspect, a cement manufacturing system includes sensors for sensing movement conditions of cement making machines. A further aspect provides a central computer connected to vibration sensors associated with cement making machines, where software instructions perform real-time comparisons and machine performance determinations, based at least in part on sensed signals.

Claims

1. A monitoring system for cement manufacturing, the system comprising:

a clinker-making kiln comprising a rotatable hollow tube;

a rotatable transmission rotating the tube;

a motor rotating the transmission;

a support supporting a section of the transmission;

a bearing assembly located between the transmission and the support;

a first set of sensors located adjacent to and operably sensing vibrations of at least one of;

(a) the tube, (b) the bearing assembly; and

(c) the transmission;

a second set of non-contact sensors located adjacent the motor and operably sensing vibrations of at least one of;

(a) the motor and (b) the transmission;

computer instructions receiving signals from the sensors and automatically determining if an undesirable condition exists with the kiln; and

a display visually showing a representation of the clinker-making kiln and sensor locations associated therewith.

2. The system of claim 1, further comprising a controller connected to the sensors through a communications interface, the controller being remotely located from the kiln, and another set of software instructions used by the controller to perform substantially real-time calculations based at least in part on signals from the sensors to determine and report operating problems with the kiln.

3. The system of claim 2, wherein the sensors communicate with the interface and controller in a wireless manner.

4. The system of claim 2, wherein the interface includes a multiplexer.

5. The system of claim 1, wherein the display visually shows a simulated representation of the kiln and sensor locations associated therewith, the display varies a sensor indication image to reflect a condition associated with at least one of the sensor signals, the display includes an entire manufacturing plant illustration view, an enlarged kiln and associated sensor illustration view, and a sensor wave form or spectrum view.

6. The system of claim 1, wherein each of the sets of sensors include at least two vibration sensors having different orientations.

7. The system of claim 1, further comprising software in the controller comparing sensed values to historical data and determining if there is an undesirable movement condition sensed by any of the sensors in a substantially real-time and continuous manner, the software then automatically identifying a potential mechanical causation associated with the sensed values if an undesirable condition is determined.

8. The system of claim 1, wherein at least one of the sensors send at least 1,000 samples per second to the controller for vibrational peak analysis by the controller.

9. A monitoring system for cement manufacturing, the system comprising:

a clinker-making kiln comprising a rotatable hollow tube;

a rotatable transmission rotating the tube;

a motor rotating the transmission;

a block supporting a section of the transmission;

a bearing assembly located between the transmission and the block;

sensors located adjacent to and operably sensing vibrations of at least one of;

(a) the tube, (b) the bearing assembly; and

(c) the transmission; and

a computer-controlled display visually showing a simulated representation of the kiln and sensor locations associated therewith, the display varying a sensor indication image to reflect a condition associated with a signal from the associated sensor.

10. The system of claim 9, further comprising a computer controller connected to the sensors through a communications interface, the computer controller being remotely located from the kiln, and a set of software instructions used by the computer controller to perform substantially real-time calculations based at least in part on signals from the sensors to determine and report operating problems with the kiln.

11. The system of claim 10, wherein the sensors communicate with the interface and controller in a wireless manner.

12. The system of claim 9, further comprising a computer program, stored in non-transient memory, comprising:

a set of instructions receiving substantially real-time vibration sensor data from the sensors;

a set of instructions comparing the real-time sensor data to target sensor data; and

a set of instructions automatically determining if an undesirable condition exists in the kiln, and automatically identifying and reporting a potential cause of the undesirable condition based at least in part on the data comparison and determination.

13. The system of claim 12, further comprising a set of instructions analyzing analog data from at least fifty of the vibrational sensors associated with multiple cement making machines including the kiln, in a substantially real-time and continuous manner.

14. The system of claim 12, further comprising a set of instructions visually displaying the simulated representation of multiple cement making machines, including the kiln, and displaying the sensor indication image in order to replicate a manual walk by route for checking same.

15. The system of claim 9, wherein the sensors include at least two non-contact vibration sensors, coupled to the block, having different orientations.

16. The system of claim 9, further comprising software in a computer controller comparing sensed values to historical data and determining if there is an undesirable movement condition sensed by any of the sensors in a substantially real-time and continuous manner, the software then automatically identifying a potential mechanical causation associated with the sensed values if an undesirable condition is determined.

17. The system of claim 9, further comprising a second set of non-contact sensors located adjacent the motor and operably sensing vibrations of at least one of:

(a) the motor and (b) the transmission, at least one of the sensors sending at least 1,000 samples per second to a programmable controller for vibrational peak analysis by the controller.

18. The system of claim 9, wherein at least one of the sensors is a substantially horizontally oriented accelerometer, at least another of the sensors is a substantially axially oriented accelerometer, and at least another of the sensors is a substantially vertically oriented accelerometer.

19. The system of claim 9, further comprising:

the display located in a centralized control room displaying information and any alarms on a simulated representation of machines in a plant manufacturing the cement, including colored lights and the representation of the kiln, a representation of a crusher and a representation of a mill; and

a portable PDA device automatically receiving a signal from a computer in the centralized control room if the undesired condition is determined.

20. A monitoring system for cement manufacturing, the system comprising:

a cement making machine comprising at least one of;

(a) a clinker-making kiln, (b) a crusher, and (c) a mill, the machine comprising a rotatable component;

at least one of a rotatable transmission and a motor, rotating the component;

a support supporting at least one of the transmission, motor and machine;

a bearing assembly coupled to at least one of the transmission, motor, component, and support;

a first set of sensors located adjacent to and operably sensing vibrations of at least one of;

the component, bearing assembly, transmission, and motor, of at least one of the machines;

at least a second set of sensors located adjacent to and operably sensing vibrations of at least one of;

the component, bearing assembly, transmission and motor, of at least another of the machines;

a central computer comprising computer instructions receiving signals from the sensors and automatically determining if an undesirable condition exists with the machines, the central computer being remotely located from the machines in a central manufacturing plant control room; and

a hand-held and portable electronic data collector operably communicating with the central computer.

21. The system of claim 20, further comprising a communications interface, the central computer being connected to the sensors through the communications interface, and another set of software instructions used by the central computer to perform substantially real-time calculations based at least in part on signals from the sensors to determine and report operating problems with the kiln.

22. The system of claim 21, wherein the sensors communicate with the interface, central computer and data collector in a wireless manner.

23. The system of claim 20, further comprising a computer program, stored in non-transient memory, comprising:

a set of instructions receiving substantially real-time vibration sensor data from the sensors;

a set of instructions comparing the real-time sensor data to target sensor data; and

a set of instructions automatically identifying and reporting a potential cause of the undesirable condition based at least in part on the data comparison and determination.

24. The system of claim 20, wherein the set of computer instructions analyzes analog data from at least fifty of the vibrational sensors associated with multiple cement making machines including the kiln, crusher and mill, in a substantially real-time and continuous manner.

25. The system of claim 20, further comprising another set of computer instructions visually displaying a simulated representation of the cement making machinery, including the kiln, crusher and mill, and displaying an indication image of data from the sensors in order to replicate a manual walk by route for checking same.

26. The system of claim 20, wherein each of the sets of sensors includes at least two vibration and non-contact sensors having different orientations.

27. The system of claim 20, wherein at least one of the sensors sends at least 1,000 samples per second to the central computer for vibrational peak analysis by the central computer.

28. The system of claim 20, wherein the hand-held and portable electronic data collector receives signals through the central computer from a third set of sensors coupled to another remotely located cement manufacturing machine, and the hand-held data collector operably interfaces with the central computer to transfer sensor data to an offline database.

29. The system of claim 20, further comprising at least a first switch matrix and a multiplexer connecting at least the first and second set of sensors to the central computer to provide at least a sixty-four channel data acquisition device with analog-to-digital sensor-to-multiplexer signal conversion, and the monitored sensors exceeding four signals.

30. The system of claim 20, wherein the machine includes the kiln and the component is a rotating hollow tube.

31. The system of claim 20, wherein the machine includes the crusher and the component is at least one of:

an electric motor, a pulley, a belt and a shaft.

32. The system of claim 20, wherein the machine includes the mill.

33. The system of claim 20, wherein at least one of the sensors is a non-contact proximity sensor coupled to the machine.

34. The system of claim 20, wherein at least one of the sensors is a substantially horizontally oriented accelerometer, at least another of the sensors is a substantially axially oriented accelerometer, and at least another of the sensors is a substantially vertically oriented accelerometer.

35. The system of claim 20, further comprising:

a monitor located in the centralized control room displaying information and any alarms on an illustration of a plant manufacturing the cement, including colored lights and representations of the kiln, crusher and mill; and

a portable PDA device automatically receiving a signal from the central computer if the undesired condition is determined.