| 摘要 |
PROBLEM TO BE SOLVED: To provide tunnel water spray equipment capable of reducing a water discharge amount during an inspection and suppressing water shortage of a water storage tank. SOLUTION: A water spray head connected to water spray piping is arranged on a tunnel wall surface. In the case of a fire, an automatic valve device 10 performs notice water discharge from the water spray head by low pressure setting, shifts to stipulated pressure setting when the predetermined time elapses, and performs main water discharge from the water spray head. The automatic valve device is provided with a low pressure inspection setting valve 100, a closing operation is performed by remote control during the inspection, the water flow of piping L9 to the pressure regulating mechanism of a pressure regulating valve 16 is stopped, the pressure regulating valve 16 is fixed to the low pressure setting, and inspection actual water discharge is performed from the water spray head by the low pressure setting control of the automatic valve 10. COPYRIGHT: (C)2011,JPO&INPIT |
