Oil sample standard oil sample compounding device of transformer

The utility model provides an oil sample standard oil sample compounding device of a transformer, which comprises an oil tank containing blank oil sample, an oil pump, a first cylinder, a second cylinder and a third cylinder, wherein the oil pump is communicated with the bottom part of the oil tank, and all the end parts of the piston rods of the first cylinder, the second cylinder and the third cylinder are fixedly connected with a driving device; the utility model is characterized in that the driving device comprises three electric motors, which are fixedly connected with the piston rod ends of the first cylinder, the second cylinder and the third cylinder correspondingly, all the top ends and the bottom parts of the three cylinders are opened with openings, wherein the opening at the top end of the first cylinder is connected correspondingly with the oil pump, a compound oil sample sampling tap and the opening at the top end of the third cylinder through the first valve, the second valve and the first valv