Measuring and testing – With fluid pressure – Leakage
Patent
1996-08-12
1998-01-13
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 40A, 73597, G01N 2904, G01M 324
Patent
active
057081930
ABSTRACT:
The present invention is a system for locating release of fluid in a pipeline. The system comprises means or mechanism for detecting a pressure wave within the fluid indicative of a release of fluid from the pipeline, such as a leak or an unauthorized offtake. The system also comprises means or mechanism for determining the location of the fluid release by creating a test pressure wave within the fluid after the detected pressure wave. The fluid can be gas or oil but is not limited thereto in that the system will work with any fluid in a pipeline. Preferably, the location determining means or mechanism comprises a mechanism for creating a test pressure wave within the fluid in the pipeline and a mechanism for detecting a reflection of the test pressure wave. The reflection detecting mechanism and the original pressure wave sensing means or mechanism can both use a pressure transducer which is in communication with signal processing and control means or mechanism, such as a computer. Pressure signals from the pressure transducer are fed into the computer where they are processed and analyzed. The computer can include a video display for displaying the pressure signals and a keyboard for interacting with the computer. Digital filtering techniques permit sensitive detection with low false alarm rate. The present invention is also a system for mapping a pipeline. The system comprises a mechanism for creating a test pressure wave within a pipeline. The system also comprises a mechanism for detecting a reflection wave of the test pressure wave. The detecting mechanism can be a pressure transducer and signal processing means or mechanism which process the pressure signal over time.
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Botting Robert J.
Hastings Calvin R.
Ledeen Howard L.
Caldon Company
Schwartz Ansel M.
Wiggins J. David
Williams Hezron E.
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