Energy-saving environment-friendly oil storage tank heat-preservation heating device

The utility model discloses an energy-saving and environment-friendly heat preservation and heating device for an oil storage tank. Including a housing, a cavity is formed in the side wall in the shell. Filling water is arranged in the cavity; a plurality of heating wires are evenly arranged in the cavity, a water injection pipe is fixedly arranged at the top end of one side of the exterior of theshell, a valve is fixedly arranged at the end, close to the shell, of the water injection pipe, a water suction pump is installed at the bottom end of one side of the exterior of the shell through aninstallation base, and a water outlet pipe is fixedly arranged on the side, away from the shell, of the water suction pump. According to the utility model, through the formed cavity and the filling water stored in the cavity, the loss of the temperature of the tank body can be ensured; and when the tank body needs to be heated, only the control box needs to enable the heating wire to work to heatthe filling water in the c