DEVICE FOR AUTOMATICALLY OPENING AND CLOSING ULTRALOW-TEMPERATURE HIGH-PRESSURE GAS, CAPABLE OF OPENING/CLOSING A BALL VALVE REMOTELY BY ROTATING AN OPERATION LINK FOR THE BALL VALVE USING AIR INCOMING THROUGH AN INLET PORT

摘要

PURPOSE: A device for automatically opening and closing ultralow-temperature high-pressure gas is provided to ensure control stability by preventing a worker from becoming exposed to ultralow-temperature high-pressure gas even if the gas is leaked outside a gas supply pipe. ;CONSTITUTION: A device for automatically opening and closing ultralow-temperature high-pressure gas comprises a ball valve(10), a ball-valve operating link(11), a pneumatic actuator(12), a limit switch(13) and an indicator(14). A gas supply pipe is connected to both sides of the ball valve. The ball-valve operating link is connected to a ball in the ball valve and is protruded outside the ball valve. The pneumatic actuator comprises an air inlet port, rotates the ball-valve operating link using air incoming through the air inlet port and opens/closes the ball valve remotely.;COPYRIGHT KIPO 2011