Breakthrough type gas emission prevention device

摘要

Problem to be solved: to provide a breakthrough type gas emission preventing device capable of automatically preventing gas leakage.A breakage type gas emission preventing device 1 having a first portion 11 and a second portion 12 is provided at a position connecting the gas container and the changeover regulator 2, and the first and second portions 11 and 12 are connected by the connecting pipe 31.A release preventing mechanism 16 is formed in the connection pipe 31 on the first side 11 side, and a check valve 25 is formed in the connecting pipe 31 on the second side 12 side.Further, a fragile portion 14 which becomes a breakage portion 13 is formed at a portion of the connecting pipe 31 located between the first and second portions 11 and 12.When the breakage 13 is broken, the release preventing mechanism 16 prevents the gas from the gas container from being discharged to the outside and prevents the gas from flowing back from the changeover regulator 2 from outside the switching regulator 2.Diagram