Petrochemical large-machine-set fault diagnosis simulation test machine unit device

The invention discloses a petrochemical large-machine-set fault diagnosis simulation test machine unit device. The petrochemical large-machine-set fault diagnosis simulation test machine unit device comprises four bases, T-shaped grooves and four test machine units; the lower surface of each base is provided with six ground wells, a surface of each base is provided with the multiple T-shaped grooves, a plurality of mutually independent supports are installed on each base through the corresponding T-shaped grooves, and the independent test machine sets are respectively installed on the bases through the corresponding supports; and the test machine sets comprises a first test machine set, a second test machine set, a third test machine set, and a fourth test machine set. The parts can be flexibly combined, the device can really simulate an industrial field and has the advantages of comprehensive functions and reliable data, and the device satisfies scientific research of single and composite faults in the petrochemical industrial machine set fault diagnosis field.