A electric wire that what was used for short distance electric power transmission has a heat dissipation function

The utility model discloses an electric wire that what was used for short distance electric power transmission has a heat dissipation function, the novel water tree resistant power cable comprises a wire core, with the sinle silk cladding in it the first insulation layer and with the second insulating layer of first insulation layer cladding in it, ventilation cavity has between first insulation layer and the second insulating layer, the both ends of second insulating layer are provided with respectively and are used for feeding through ventilation cavity and air supply arrangement's air -supply line and the play tuber pipe that is used for feeding through the ventilation cavity and the electric wire external world, set up the first control valve on the air -supply line, set up the second control valve on the play tuber pipe, the outside of second insulating layer is provided with the temperature control device who is used for detecting the electric wire temperature, first control valve and second control valve all are connected with the temperature control device electricity. The utility model discloses it can in time be taken away by wind to make the cable work the heat that produces under high temperature environment, has guaranteed that the inside temperature of cable keeps a lower temperature for difficult the ageing of insulating layer of cable is split, has increased the life of cable.