Constant temperature oil tank device with temperature control system

The invention belongs to the temperature control technical field and relates to a constant temperature oil tank device with a temperature control system. The constant temperature oil tank device comprises a shell; an oil tank and a heat insulating device are arranged in the shell; the temperature control system and a TEC semiconductor wafer are arranged in the shell; the TEC semiconductor wafer is attached to the outer wall of the oil tank; the heat insulating device is an heat insulating cotton layer wrapping the outer surfaces of the oil tank and the TEC semiconductor wafer; and the temperature control system is arranged outside the heat insulating cotton layer and is connected with the TEC semiconductor wafer. With the constant temperature oil tank device with the temperature control system adopted, data acquisition precision and temperature control precision are improved, and a complicated mechanical structure is not required. The constant temperature oil tank device can quickly switch to different temper