| 摘要 |
PURPOSE: A safety device for blocking ignition factors is provided to safely install all kinds of devices by blocking the devices from the ignition factors. CONSTITUTION: A safety device for blocking ignition factors comprises a sealed container(10), a gas supply part(20), a first supply path(21), a purge valve(31), a second supply path(22), a normal pressure maintaining flow meter(41), a third supply path(23), a solenoid valve(32), a needle valve(33), a protective gas cooler(50), a first discharge path(61), a purge flow meter(42), a purge vent valve(71), a safety discharge valve(72), a differential pressure switch(80), an alarm(85), and a control part(90). The gas supply part supplies protective gas. The first supply path is connected from an outlet of the gas supply part to an internal space of the sealed container. The second supply path is branched from the outlet of the gas supply part to the internal space of the sealed container. The solenoid valve is operated according to the temperature of the internal space. The differential pressure switch is installed inside the internal space and is turned on and off according to the pressure of the internal space. The alarm is operated according to the operation of the differential pressure switch. [Reference numerals] (20) Gas supply part; (50a,50b) Cooler; (90) Control part |
