▎ 摘　　要

NOVELTY - The hydraulic oil tank has drive blades that are arranged in the oil tank housing (1) and placed between the oil return port and a bottom plate of the oil tank housing. The external fan is arranged outside the oil tank housing. A shaft penetration hole is formed in the oil tank housing. The central axes of the drive blades and the external fan are coaxially connected and arranged in the shaft penetration hole. The central shafts of the driving blades and the external fan are sealed with the shaft penetration hole of the oil tank housing by the sealing rings. The heat transfer layer portions of graphene are attached to inner surfaces and outer surfaces of the driving blades and the external fan. USE - Hydraulic oil tank in hydraulic system for LED illumination, computer, satellite circuit, laser weapon, handheld terminal equipment and other high-power and high-integration-Ievel systems. ADVANTAGE - The graphene heat transfer layers are attached to the surfaces of the driving blades and the external fan, so that quick heat dissipation is realized due to the high thermal conductivity of graphene, and the surface area and the volume of the oil tank are reduced, and miniaturization and integration of the oil tank are ensured. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a hydraulic oil tank. 1Oil tank housing 5Oil tank accessories 6Oil return port 7Oil outlet