Multifunctional differential pressure tester for compatibility of high pressure hydrogen with material

The invention relates to the field of development of equipment for testing mechanical properties of materials and aims to provide a multifunctional differential pressure tester for compatibility of high pressure hydrogen with a material. The tester comprises a test chamber, a pneumatic booster pump, a low-pressure reservoir, a high-pressure reservoir, a vacuum pump, a hydrogen cylinder unit, an argon cylinder unit and a control system module; the tester is capable of testing the mechanical properties of a disc sample in a high-pressure hydrogen environment. By means of applying load to the disc sample via the differential pressure of the upper and lower surfaces of the disc sample, a complex servo test mechanism is omitted, equipment size is greatly reduced, equipment investment is lowered, operating is facilitated, and testing efficiency is improved; during a test, the parameters, such as strain and displacement, of the disc sample are conveniently measured, and corresponding test components are insusceptible to high-pressure hydrogen.