Gas leakage prevention device and a gas leakage prevention method

摘要

PROBLEM TO BE SOLVED: To prevent gas leakage over a comparatively long period while accurately detecting presence of gas leakage from a connection of a gas pipe.;SOLUTION: The gas leakage prevention device includes a first chamber forming body 15 for air-tightly and externally surrounding the connection 12 of the gas pipe 11 in which gas G flows to form a first chamber R1, and further includes a second chamber forming body 16 for forming a second chamber R2 separated from the first chamber R1 and capable of storing gas G. The first chamber forming body 15 is provided with a communication means 17 for making the first chamber R1 communicate with the second chamber R2 if the internal pressure in the first chamber R1 becomes setting pressure or more.;COPYRIGHT: (C)2013,JPO&INPIT