Insulating oil volume compensation device system used for oil-immersed electrical equipment

The utility model relates to an insulating oil volume compensation device system used for oil-immersed electrical equipment. The insulating oil volume compensation device system is provided with an electrical equipment body internally filled with insulating oil, and the lower position on the side face of the electrical equipment is provided with an oil volume compensation device connected with the electrical equipment through an oil way system; the oil volume compensation device is a volume expansion type heat sink provided with an insulating oil inlet and an insulating oil outlet, wherein the insulating oil inlet and the insulating oil outlet are communicated with the oil way system, and the oil volume compensation device is composed of a plurality of elastic components and a shell arranged outside the elastic components. According to the insulating oil volume compensation device system used for the oil-immersed electrical equipment, the external structure of the electrical equipment is greatly simplified, and space is saved; real welding seal of an oil tank can be realized for the electrical equipment, the electrical equipment of the kind is free of maintenance for a user, reliability of the electrical equipment is improved, and manufacturing and maintaining cost is saved.