Method of detecting a leakage of fluid
AssigneeHitachi, Ltd.
InventorSakae Sugiyama
Life of this patent
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Abstract
A method of detecting a leakage of fluid is disclosed, in which a leaking sound, which is produced when the pipe is broken and propagates through the pipe, is detected by a couple of acoustic sensors mounted to a pipe through which fluid flows at portions separated from each other with a proper distance, the amplitudes of a plurality of different frequency components extracted from the output signals of the acoustic sensors are obtained and then a leaking location of fluid in the pipe and a leaking amount of fluid are determined on the basis of these amplitudes.
Claims8
A method of detecting a leakage of fluid comprising the steps of:
- detecting a leaking sound of fluid by a plurality of acoustic sensors separately mounted to a pipe through which fluid flows;
- obtaining amplitudes of a plurality of different frequency components extracted from the output signals from said acoustic sensors;
- determining a leaking location of fluid of said pipe on the basis of said amplitudes;
- determining an amount of leaking fluid on the basis of said amplitudes;
- and
- determining an opening area of a broken part of said pipe on the basis of a differential pressure between a first pressure in said pipe and a second pressure outside said pipe, and the amount of the leaking fluid.
A method of detecting a leakage of fluid comprising the steps of:
- detecting a leaking sound of fluid at a plurality of acoustic sensors separately mounted to a pipe through which liquid flows;
- obtaining amplitudes of a plurality of different frequency components extracted from the output signals from the acoustic sensors;
- determining an amount of leaking fluid on the basis of the amplitudes;
- and
- determining an opening area of a broken part of the pipe on the basis of a differential pressure between a first pressure in the pipe and a second pressure outside the pipe, and the amount of the leaking fluid.
Dependencies are inferred from the claim text.