Anti-corrosion phase change heat storage device

The utility model discloses an anti-corrosion phase change heat storage device, and particularly relates to the technical field of phase change heat storage equipment, which comprises a shell, a heat preservation layer is fixedly sleeved in the shell, an inner container body is fixedly sleeved in the heat preservation layer, an anti-corrosion coating is coated on the inner wall of the inner container body, and the anti-corrosion coating is coated on the inner wall of the inner container body. A medium inlet pipe and a medium outlet pipe are fixedly arranged among the tops of the shell, the heat preservation layer and the inner container body in a sleeving mode, a heat exchange coil pipe is welded between the bottom end of the medium inlet pipe and the bottom end of the medium outlet pipe, and the outer wall of the top end of the heat exchange coil pipe is slidably sleeved with a sealing floating plate. The sealing floating plate can ascend and descend along with expansion or contraction of the phase change he