| 摘要 |
<p>A fire extinguishing arrangement comprises two tubular mains (24, 26) containing a volatile fire extinguishant such as FM 200 or FE 36, the extinguishant being retained between rupturable diaphragms (28, 38). When the extinguishant is to be discharged, a pyrotechnic gas generator (44, 46) is activated to produce high pressure gas in an expansion chamber (40) which is separated from a main chamber (36) containing an aqueous-based agent such as water by a rupturable diaphragm (42). The high gas pressure ruptures the diaphragm (42) and the high pressure is applied to the extinguishant via the water in the main chamber (36). The diaphragms (38, 28) retaining the extinguishant rupture and the extinguishant is ejected through discharge holes (18) in discharge nozzles (14, 16). The water quenches the high temperature gases from the pyrothechnic gas generator (44, 46), thus preventing pyrolysis of the fire extinguishant and the creation of harmful and deleterious by-products. Any water ejected with the fire extinguishant will also perform an extinguishant function.</p> |
