Cage type heat insulation device for high-temperature equipment

The utility model relates to a cage type heat insulation device for high-temperature equipment, which comprises a seal head. An upper tension ring is arranged on the upper portion of the seal head, a lower tension ring is arranged on the lower portion of the seal head, a plurality of longitudinal tension rods distributed longitudinally are arranged below the lower tension ring, a plurality of annular heat insulation supporting plates arranged in parallel are arranged on the longitudinal tension rods, and heat insulation materials are supported on the heat insulation supporting plates. The cage type heat insulation device of the high-temperature equipment is characterized in that each heat insulation supporting plate consists of a plurality of arc-shaped supporting plates, each two adjacent arc-shaped supporting plates are connected via supporting plate link pieces and bolts, two ends of each supporting plate link piece are respectively provided with slotted holes matched with the bolts, the heat insulation ma