HIGH PRESSURE MATERIAL STRENGTH TESTING EQUIPMENT

PROBLEM TO BE SOLVED: To provide high pressure material strength testing equipment capable of efficiently preventing the leak of a corrosive gas and in which the internal pressure of pressure vessels is hardly changed even after using for a long time. SOLUTION: The high pressure material strength testing equipment includes: a pressure vessel 120; a supporting member 130; a pull rod 140 for applying stress to a test object 160; a pressure vessel cover 150; a first external pressure vessel 020 having a first bellows 024; a load bearing means 030; a second external pressure vessel 040 having a second bellows 043; a body frame 050; a first gas supply means 060 for delivering the pressurized corrosive gas into the pressure vessel 120; a second gas supply means 070 for delivering a pressurized inert gas into the first external pressure vessel 020 and the second external pressure vessel 040; and an internal pressure control means 80 for synchronously increasing or decreasing the internal pressure of the first external pressure vessel 020 and the second external pressure vessel 040. COPYRIGHT: (C)2011,JPO&INPIT