| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a leakage detection system, a leakage detector and a leakage detection method capable of detecting large amount leakage in an early stage. <P>SOLUTION: The leakage detection system 1 includes: a main flow path 121 for supplying a fuel gas from a gas cylinder 110 to the side of a plurality of dwelling houses 2; a bypass flow path 122 for bypassing the main flow path 121; a master regulator 140 provided in the main flow path; a slave regulator 150 provided in the bypass flow path 122, whose regulation pressure is set higher than the regulation pressure of the master regulator 140; and the leakage detector 160 for detecting the gas leakage of a predetermined flow rate or more. The leakage detector 160 includes: a pressure drop amount calculation part for calculating a pressure drop amount from signals outputted by a pressure sensor which outputs the signals corresponding to a pressure in the master regulator 140; a flow rate estimation part for estimating a flow rate from the calculated pressure drop amount; and a leakage detection part for detecting the gas leakage of the predetermined flow rate or more from the estimated flow rate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
