Storage device suitable for nuclear power station radioactive control rod guide cylinder

The utility model discloses a storage device suitable for a nuclear power station radioactive control rod guide cylinder, the control rod guide cylinder comprises an upper guide cylinder and a lower guide cylinder, the storage device comprises a first storage mechanism and a second storage mechanism, the first storage mechanism is used for storing the upper guide cylinder, and the second storage mechanism is used for storing the lower guide cylinder. The second storage mechanism is used for storing the lower guide cylinder; the second storage mechanism comprises a first shell, a second shell and a third shell which are sequentially connected, the outer diameter of the third shell is larger than that of the second shell, and the outer diameter of the second shell is larger than that of the first shell. According to the storage device suitable for the nuclear power station radioactive control rod guide cylinders, the space utilization rate of the storage device is effectively improved, the filling time of a plu