Tracking vibrations in a pipeline network

• US 7,596,458 B2
• Filed: 10/11/2005
• Issued: 09/29/2009
• Est. Priority Date: 11/12/2002
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Flow Metrix, Inc. (Itron, Inc.)
• Inventors: Lander, Paul
• Primary Examiner(s): Cosimano; Edward R
• Application Number:
  US11/246,543
• Publication Number:
  US 20070130317A1
• Time in Patent Office: 1,449 Days
• Field of Search: 735/70, 738/61, 738/611.8, 738/612.1, 735/84, 735/87, 735/92, 702/32, 702/45, 702/48, 702/50, 702/51, 702/54, 702/56, 702/108, 702/114, 702/127, 702/187, 702/188, 702/189, 340/500, 340/540, 340/603, 340/605, 340/870.01, 340/870.02, 340/870.07, 340/870.16
• US Class Current: 702/56
• CPC Class Codes: G01M 3/243 for pipes

Abstract

Tracking vibrations on a pipeline network includes installing multiple vibration recorders on the pipeline network, with each recorder including a sensor, a timer, a processor, and a digital communication device. At each vibration recorder, vibration signals are received from the sensor at programmed times under the control of the processor of the vibration recorders and processed by the processor. The processed vibration signals are communicated from the vibration recorder to a reader device using the digital communication device. Thereafter, the processed vibration signals from the one or more reader devices are collected at a central computer system. Finally, the collected processed vibrations signals are analyzed at the central computer system to determine abnormal vibration patterns and to obtain measures of any leaks present in the pipeline network.

Claims

1. A vibration recorder for tracking vibrations in a pipeline network, the vibration recorder comprising:

structure for installing the vibration recorder on the pipeline network, the structure including a mechanism for receiving an O-ring that extends around a pipe of the pipeline network so as to secure the vibration recorder to the pipe;

a sensor that produces vibration signals representing vibrations in the pipeline network;

a communication device; and

a processor that receives and processes vibration signals from the sensor and controls the communication device to communicate the processed vibration signals.

2. The vibration recorder of claim 1, wherein the processor controls the communication device to communicate the processed vibration signals to an associated reader.

3. The vibration recorder of claim 1, further comprising a housing, wherein the sensor comprises a sensing element oriented in the housing so as to he at a known orientation to a flow in a pipe when the vibration recorder is installed on the pipe.

4. The vibration recorder of claim 1, wherein the processor is programmed to store the vibration signals from the sensor.

5. The vibration recorder of claim 4, wherein the processor stores the vibration signals when a usage flow in the pipeline network is minimal.

6. A system for tracking vibrations in a pipeline network, the system comprising:

two or more vibration recorders, wherein each of the vibration recorders comprises;

a housing;

structure on the housing for installing the vibration recorder on the pipeline network;

a sensor in the housing that produces vibration signals representing vibrations in the pipeline network;

a communication device in the housing; and

a processor in the housing that receives and processes vibration signals from the sensor and controls the communication device to communicate the processed vibration signals;

one or more reader devices configured to receive the processed vibration signals from the communication devices of the vibration recorders; and

a computer system configured to collect the processed vibration signals from the one or more reader devices and further process the processed vibration signals to determine abnormal vibration patterns and to obtain measures of any leaks present in the pipeline network.

7. The system of claim 6, wherein the structure for installing the vibration recorder on the pipeline network includes a mechanism for receiving an O-ring that extends around a pipe of the pipeline network so as to secure the vibration recorder to the pipe.

8. The system of claim 6, wherein the sensor of at least one vibration recorder comprises a sensing element oriented in the housing of the at least one vibration recorder so as to be at a known orientation to a flow in a pipe when the at least one vibration recorder is installed on the pipe.

9. The system of claim 6, wherein the computer system is configured to compute a leak index for a predetermined location of the pipeline network.

10. The system of claim 9, wherein the computer system is configured to compute the leak index for the predetermined location using vibration signals representing vibrations at different locations in the pipeline network.

11. The system of claim 9, further comprising a display to display the leak index on a map.

12. The system of claim 9, wherein the computer system is configured to compute the leak index using known information about the pipeline network.

13. The system of claim 12, wherein the known information comprises an estimate of approximate prevalence of leakage in the pipeline network.

14. A flow meter including a vibration recorder for tracking vibrations in a pipeline network, the flow meter comprising:

a housing;

a flow sensor in the housing that measures flow in the pipeline network;

a vibration sensor in the housing that produces vibration signals representing vibrations in the pipeline network;

a communication device in the housing; and

a processor in the housing that receives and processes vibration signals from the vibration sensor and controls the communication device to communicate the processed vibration signals.

15. The flow meter of claim 14, wherein the processor controls the communication device to communicate the processed vibration signals to an associated reader.

16. The flow meter of claim 14, wherein the processor is programmed to store the vibration signals from the sensor.

17. The flow meter of claim 16, wherein the processor stores the vibration signals when a usage flow in the pipeline network is minimal.