GAS PIPE CONNECTING STRUCTURE

摘要

PURPOSE: A gas pipe connection structure is provided to improve an airtight effect by forming protrusions and grooves adhered to the gulleys and ridges of a gas pipe on the inner surface of a packing. CONSTITUTION: A gas pipe connection structure comprises a socket, a gas pipe(40), a tightening nut(50), and a packing(60). The gas pipe is coupled to one end of the socket. The tightening nut is coupled to the socket and couples the socket and the gas pipe. The packing is inserted between the socket and the gas pipe and maintains air-tightness. The packing is composed of a body unit(61), a stopping unit(62), and a support unit(63). The body unit is formed on the inner surface of the socket. The protrusions(61a) and grooves(61b) of the body unit are adhered to the gulleys(42) and ridges(41) of the gas pipe. The stopping unit is hung on one end of the socket. The support unit is supported to the inner stopping plane(32) of the socket.