MELTABLE PLUG FOR PRESSURE VESSEL, MANUFACTURING METHOD FOR MELTABLE PLUG, AND PRESSURE VESSEL

摘要

PROBLEM TO BE SOLVED: To provide a meltable plug for pressure vessel having a high leak preventing ability, a manufacturing method for such meltable plugs, and a pressure vessel equipped with meltable plug.;SOLUTION: The meltable plug is for a pressure vessel for filling of a high- temperature, high pressure gas having a pressure relief hole filled with a meltable alloy, wherein the pressure relief hole is furnished with a rigid member having a higher melting point and higher rigidity than the meltable alloy so as to prevent the gas from leaking when the internal pressure of the pressure vessel is applied to the meltable alloy to result in its deformation, and also the invention includes the pressure vessel equipped with the meltable plug. The manufacture is executed so that the plug is placed in the condition that its pressure applying side faces up, molten alloy is poured from the pressure applying side to fill till the position where the rigid member is planned to be arranged, and the rigid member is placed on the surface of the filling molten alloy, or further that a requisite quantity of molten alloy is poured in.;COPYRIGHT: (C)2002,JPO