Anti-radiation plugging device for nuclear power machinery hole

The utility model discloses a nuclear power machinery hole anti-radiation plugging device, which is used for plugging a base body hole and a pipeline, and is characterized by comprising a sleeve fixed in the base body hole, the wrapping plates are fixed on the upper side and the lower side of the sleeve; the flexible silicone elastic body is fixed between the sleeve and the wrapping plate; the flexible sealing layer is arranged between the surface of the base body and the outer wall of the pipeline. The flexible sealing layer sequentially comprises a layer of silicon cloth, a fireproof silicone sealant, a layer of fireproof cloth, two layers of fiber blankets, a layer of fireproof cloth and a layer of silicon cloth from inside to outside. The biological shielding type large-displacement flexible sealing structure disclosed by the utility model can be suitable for blocking conditions that a mechanical pipeline needs radiation attenuation and has larger displacement, and can meet the functional requirements of