Full-automatic detection oil sample preparation device with oil filtering function

The utility model belongs to the technical field of concentration preparation of dissolved gas in transformer oil, and particularly relates to a full-automatic preparation device of an oil sample for verification with an oil filtering function, which comprises an oil cylinder oil injection module, a vacuum oil filtering module and a standard gas adding module, the oil cylinder oil injection module comprises a piston type oil cylinder, an oil inlet electromagnetic valve and an oil pump, the blank oil barrel is connected with an oil inlet of the oil pump through the oil inlet electromagnetic valve on the oil way pipe, and an oil outlet of the oil pump is connected with the piston type oil cylinder; the vacuum oil filtering module comprises an oil filtering vacuum pump and a switching three-way electromagnetic valve; the top of the piston type oil cylinder is connected with the bottom end of a hollow piston rod of the piston type oil cylinder through the oil filtering vacuum pump and the switching three-way elec