Leakage detector, leakage detection method, and pipe network monitoring apparatus
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United States of America Patent
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Jan 1, 2019
Grant Date -
Sep 3, 2015
app pub date -
Sep 20, 2013
filing date -
Sep 24, 2012
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Abstract
Provided is a leakage detector which is capable of exhibiting high sensitivity to vibration-sounds caused by water leakage from a synthetic resin pipe and thus setting an installation span longer to thereby make it possible to more efficiently perform a water leakage inspection for a synthetic resin pipe. The leakage detector (6) comprises a base (21), a piezoelectric element (9) supported by the base (21) and configured to convert vibration-sounds to an electric signal, and a weight member (28) loaded against the piezoelectric element (9). The piezoelectric element (9) is made of a polymeric piezoelectric material. One end of the piezoelectric element (9) is supported by an upper end of a support post (27), and the weight member (28) is loaded against the other end of the piezoelectric element (9).
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