| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain sprinkler fire-extinguishing equipment that prevents the equipment from being broken by water hammer due to an overflow amount. <P>SOLUTION: A channel, in which a flow restriction means 28 and a second opening valve 29 are interposed, is provided as a bypass channel taking a detour around a preoperation valve 22. A second opening valve 29 is opened at the start of water supply, a flow rate of fire-extinguishing water to be sent out is controlled not to exceed a rated water supply amount until a predetermined time lapses away, and, after the lapse of the predetermined time, the flow rate to be sent out is controlled at a rate flow rate by the preoperation valve 22, which remains open. <P>COPYRIGHT: (C)2013,JPO&INPIT |
