GAS-SUPPLY SYSTEM FOR FLAME MACHINING OF METALS Russian patent published in 2000 - IPC

FIELD: welding engineering. SUBSTANCE: system includes cylinder with acetylene or hydrogen, cylinder with oxygen or air, reducers positioned at outlets of every cylinder, and safety devices. The latter are installed ar reducer outlet of every cylinder. They have check valves outlet-interlocked with flame-extinguishing bushings and built-in temperature shut-off valves. Each of valves is made as a sleeve and spring-loaded pusher. Spring, pusher and sleeve are arranged in flame-extinguishing bushing coaxially. Sleeve is coupled to pusher by breaking coupling for overlapping the check valve outlet channel by pusher in case of temperature rise. Flame-extinguishing bushings communicate with hoses through the shut-off valves. Inlets of the second check valves are coupled to hoses, and outlets of the second flame-extinguishing bushings are connected to inlets of flame-machining device. Hoses accommodate pressure and flow-rate shut-off valves. EFFECT: higher operational reliability. 3 cl, 3 dwg