A maintenance device for a moderator reflector insert installed in an underground helium vessel

Abstract

The invention relates to a maintenance device for a moderator reflector plug-in, in particular to a maintenance device for a moderator reflector plug-in mounted in an underground helium container. According to the maintenance device for the moderator reflector plug-in mounted in the underground helium container, the moderator reflector plug-in which is mounted in the underground helium container, is not assisted in operation by any manipulator in the whole journey, and has extra large, overweight and superstrong radiation can be maintained in a segmented manner. The maintenance device comprises a lifting lead tank, a three-axis platform, a lifting appliance, a long-handle tool, a maintenance tool, a monitoring device, a display device and a storage lead tank. The maintenance device and a method are adopted to maintain the moderator reflector plug-in, and the problems of manufacturing of an extra large lifting shielding container, bearing difficulties of a crane, construction of large type aftertreatment maintenance areas like a volume shrinking maintenance area, development of radiation-resisting volume shrinking tools and the like are solved; meanwhile, irradiation of workers is reduced, and aftertreatment difficulties like volume reducing are solved; the cost is reduced, and the replacement efficiency is improved; and what is more important, through the method, an existing heat chamber can be utilized for achieving transferring of a radioactive body among different shielding devices.

Description

technical field [0001] The invention relates to a maintenance device for a moderator reflector plug-in, in particular to a device for segmented maintenance of a super-large, super-heavy, super-strong radiation moderator reflector plug-in installed in an underground helium container and operated without the assistance of a manipulator. A maintenance device for a moderator reflector insert installed in an underground helium vessel. Background technique [0002] Neutrons are one of the important probes for people to understand the microstructure and motion state of matter. The main goal of the China Spallation Neutron Source (hereinafter referred to as CSNS) target station is to efficiently generate and utilize neutrons to serve the scientific application of neutrons; As my country's first pulsed neutron source based on proton source acceleration, the CSNS project will surely lead to the breakthrough and development of a large number of important key technologies in the fields o...

AI Technical Summary

Problems solved by technology

The replacement work must be operated by remote control, but the current domestic R&D technology of anti-radiation powered manipulators and robots is immature, and it must be imported from abroad at a huge cost, and the maintenance and replacement of large radioactive parts in this environment is the first case in China; although the Chinese patent The announcement number is CN 103114821 A, and the patent name is a kind of remote control maintenance equipment for pipeline shearing in deep well radiation environment and its maintenance process. It provides a remote control maintenance equipment for cutting pipelines without manipulators and using long handle tools in deep well radiation environment and its maintenance process, but there is no specific disclosure of the equipment and method for segmented maintenance of the ultra-large, ultra-heavy, ultra-intensive radiation moderator reflector insert installed in the underground helium container and operated without the assistance of a manipulator.

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