A temporary storage device for unloading

Abstract

The invention relates to the technical field of reactor engineering, in particular to a material unloading temporary storage device. The unloading temporary storage device includes a silo, an external component of the silo, an internal component of the silo, a shielding module and a charging module, the silo includes a barrel and a box, the external component of the silo includes a cooling water jacket, The internal components of the silo include a straight silo, an inclined silo and a discharge silo connected in sequence, the shielding module includes an outer shield and a neutron shield, the charging module includes a charging body, and the charging body There is a scoring channel in it. The unloading temporary storage device described in the present invention can perform the functions of spherical element receiving, temporary storage, atmosphere switching and unloading, and at the same time has the safety functions of ensuring the geometric integrity of the spherical element, radioactive protection and waste heat discharge, and has a compact and reliable structure. Advantages of high performance and easy maintenance.

Description

technical field [0001] The invention relates to the technical field of reactor engineering, in particular to a material unloading temporary storage device. Background technique [0002] Based on the existing international industrial valve manufacturing technology and level, in order to solve the reliability of the valves related to atmosphere switching during the unloading process of the spent fuel spherical element within the life of the nuclear power plant, it is necessary to increase the temporary storage capacity of the spent fuel spherical element in the unloading temporary storage device. It can be as large as 4000 or more, and can adopt structures such as a vertical shaft system and a porous turntable similar to the core unloading device to solve the reliability and maintainability of the unloading mechanism in the unloading temporary storage device. [0003] However, unlike the core unloading device, the temporary storage device for large-capacity spent fuel spherica...

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Problems solved by technology

The second is that the former has a tank capacity of about 1,500 spherical elements, while the latter has a capacity of at least 4,000. Therefore, while considering the special process of atmosphere switching and unloading temporary storage, more attention must be paid to the large number of unloading temporary storage devices. Safety issues such as waste heat removal of spent fuel spherical elements and radioactive protection of high-dose gamma rays

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