| 摘要 |
PROBLEM TO BE SOLVED: To provide pre-operating sprinkler fire extinguishing equipment of high reliability that does not increase the starting frequency of a vacuum pump without delaying detection of operation of a sprinkler head regardless of the size of piping volume.SOLUTION: This sprinkler fire extinguishing equipment includes a pre-operation valve 22; secondary side piping 12 to which a sprinkler head 2 is connected; the vacuum pump 24 creating a vacuum in the secondary side piping 12; and primary side piping 11 with a water supply pump 21 connected to the base end side. Suction piping 14 is provided with a vacuum switch 41 detecting the operation of the sprinkler head; a vacuum switch 42 detecting pressure in piping; a regulator 43 closing a passage when the pressure in the piping becomes a predetermined operating pressure or lower; and a vacuum pump control panel 6 starting the vacuum pump 24 when the pressure detected by the vacuum switch 42 is higher than a threshold. The operating pressure of the regulator 43 and the threshold of the vacuum switch 42 are set based on the volume of the secondary side piping 12. |
