Oil level monitoring device for vacuum oil injection of transformer

The invention belongs to the technical field of oil monitoring, and particularly relates to an oil level monitoring device for vacuum oil injection of a transformer. The device comprises a pressure measuring part, a connecting part and an oil storage chamber, the pressure measuring part, the oil storage chamber and the connecting part are connected in sequence, and the connecting part is connected with an oil pressure area to be measured; the pressure measuring part comprises a control module, a display module, a data acquisition module, a data expansion module, an alarm module and a calculation module; the control module is used for inputting a control instruction to set related parameters and realizing basic data calling operation; the display module is used for displaying a pressure measurement result; the data acquisition module is used for acquiring pressure data; the data expansion module is used for realizing external pressure data output of the pressure measuring part; the alarm module is used for dis