Concrete steel plate structure module for dry storage of high-burn-up spent fuel

The invention relates to the technical field of nuclear power plant spent fuel dry storage, in particular to a concrete steel plate structure module for high-burn-up spent fuel dry storage, which comprises a top cover, a barrel and a base, a barrel shell is composed of an outer shell and an inner shell which are concentrically arranged, an annular cavity is formed in the inner shell, a step structure is formed at the top, and the bottom of the shell is connected with a bottom plate; the base can be in sliding fit with the annular cavity and is clamped on the bottom plate; the top cover is connected with the top of the barrel and is matched with the stepped structure; an air inlet channel is transversely formed in the bottom of the shell, an exhaust channel is transversely formed in the top of the shell, the air inlet channel and the exhaust channel are communicated with the annular cavity, set gaps are formed between the base and the inner shell and between the top cover and the stepped structure, and the air