| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder fire extinguishing equipment wherein a required pressure in a powder storage tank can be a pressure being sufficient to feed out a powdery fire extinguishing agent from a powder storage tank to a two- fluid mixing apparatus, and an inexpensive system can be realized because the pressure-resistant grades of the powder storage tank, a discharging valve and a selecting valve can be lowered. SOLUTION: A pressurized gas enters the powder storage tank 1, and when the inside of the powder storage tank 1 is pressurized, the discharging valve 3 is opened by a constant pressure action, and the powdery fire extinguishing agent flows in piping 5, passes through the selecting valve 6, and is emitted from a jetting head 7 for this powder fire extinguishing equipment. In such a powder fire extinguishing equipment, the two-fluid mixing apparatus 9 is provided on the secondary side of the selecting valve 6, and a pressure value of the pressurized gas for mixing which is introduced into the two-fluid mixing device 9 is selected. Thus, a pressure on the primary side is set to be as small as possible based on a specified pressure on the secondary side. COPYRIGHT: (C)2003,JPO
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