| 摘要 |
PROBLEM TO BE SOLVED: To provide sprinkler fire extinguishing equipment for solving such a problem that a fire spreads while water discharge start is delayed since water is not discharged after a sprinkler head is operated until air inside secondary piping of an alarm valve is discharged in a fire, in dry type or pre-action type sprinkler fire extinguishing equipment.SOLUTION: Spreading of a fire is suppressed by pressurizing and filling a gaseous fire extinguisher of a nitrogen gas or the like into the secondary piping of an alarm valve at a monitoring pressure of 0.5 MPa or higher, and discharging the gaseous fire extinguisher at a pressure of 0.5 MPa or higher after a sprinkler head is operated until water discharge is started in a fire. |
