Direct-current cable for offshore oil and gas drilling platform

The invention discloses a direct-current cable for an offshore oil and gas drilling platform. The direct-current cable for the offshore oil and gas drilling platform comprises a cable core. The cable core comprises a V-shaped rubber frame. A sector-shaped main conductor is arranged above the V-shaped rubber frame. A fluoroplastic insulating layer is arranged outside the main conductor in an extruding mode, two power wire cores and three control wire cores are arranged below the V-shaped rubber frame, each power wire core comprises a power conductor coated with a polyolefin insulating layer, each control wire cable comprises a control conductor coated with a silicon rubber insulating layer, and the cable core is sequentially coated with a water-blocking tape taped covering layer, an aluminum plastic composite belt longitudinal covering layer, an inner high density polyethylene protective sleeve and an outer high density polyethylene protective sleeve. According to the direct-current cable, the V-shaped rubber frame and the sector-shaped main conductor are adopted, the firmness of the cable is guaranteed, and the main conductor can be differentiated from other conductors. The direct-current cable further has the functions of water blocking, fire resistance, high temperature resistance, signal interference resistance and the like.