Installation apparatus and installation method for high-temperature gas cooled reactor safety shell sealing seat

The invention relates to an installation apparatus and installation method for a high-temperature gas cooled reactor safety shell sealing seat, which belongs to the technical field of construction ofnuclear power project. The installation apparatus for a safety shell sealing support disclosed in the invention utilizes an internal space of the structure to avoid the influence of various inner items such as reinforcing steel bars, shielded cooling water pipes, nuclear measurement pores and the like; by virtue of the installation, adjustment and fixation of a fine adjustment mechanism and boltsfor a fixing mechanism, the high precision installation requirement can be met, and the stability and firmness of the sealing support can be ensured not to be disturbed by the later concrete pouring;and a method for installing and adjusting the sealing seat by virtue of parts and blocks is provided, so that the problem that the structure is complicated and the dense reinforcing steel bars are difficult to install can be so